CTM_BEGIN 2.0 src-cur 11818 20150206040923Z . CTMFS .ctm_status 1004 1004 644 3456c949882220aaac020e1288636db9 b73fa55974ecc044e80a4b3c5de6bbc9 14 src-cur 11818 CTMFS .svn_revision 1004 1004 644 0ccc581c9b06b2dbbc126d3f8a7d62d0 48b458f6467da6e38851c1f6c7cd4146 7 278306 CTMFN etc/rc.d/Makefile 1004 1004 644 efbfe0097c3225ebf97ca83150711fa0 e56c4225a7ac97cd2240ec8781351a95 109 d1 1 a1 1 # $FreeBSD: head/etc/rc.d/Makefile 278282 2015-02-05 20:45:50Z ngie $ d197 1 a197 1 FILES+= inetd CTMFN etc/rc.d/routing 1004 1004 755 e0e5812aaf11f8bc1cef69624405767f 11056f0c7e8a5a3807c1ad0f0e4c0dd5 250 d5 1 a5 1 # $FreeBSD: head/etc/rc.d/routing 278302 2015-02-06 00:02:00Z rpaulo $ d168 1 a168 1 local _action _if _skip fibmod fibs allfibs d174 1 a174 2 allfibs=`${SYSCTL_N} net.add_addr_allfibs` if [ "$fibs" -gt 0 ] && [ "$allfibs" -ne 0 ]; then CTMFN lib/csu/powerpc64/Makefile 1004 1004 644 52195ac646b63f25a8c6e702d37a6462 9784ab8bfe457cfc5213f96fc78f1858 406 d1 1 a1 1 # $FreeBSD: head/lib/csu/powerpc64/Makefile 278305 2015-02-06 02:35:29Z jhibbits $ a11 4 # XXX: See the log for r232932 as to why the above -mlongcall is needed. Since # clang doesn't support -mlongcall, and testing shows a clang linked with a # clang-built csu segfaults, this must currently be compiled with gcc. Once # clang supports -mlongcall, or we get a fixed ld, this can be revisited. CTMFN lib/libc/gen/disklabel.c 1004 1004 644 1d313842dfb70f23be16a60440bc5bda 18caa6cf2994996c31b93690bcd1f2c6 565 d34 1 a34 1 __FBSDID("$FreeBSD: head/lib/libc/gen/disklabel.c 278300 2015-02-05 22:54:31Z pfg $"); d88 4 a91 7 if (cgetstr(buf, "ty", &cq) > 0) { if (strcmp(cq, "removable") == 0) dp->d_flags |= D_REMOVABLE; else if (cq && strcmp(cq, "simulated") == 0) dp->d_flags |= D_RAMDISK; free(cq); } d103 1 a103 1 if (cgetstr(buf, "dt", &cq) > 0) { d105 1 a105 2 free(cq); } else d143 2 a144 5 if (pp->p_fstype == 0) if (cgetstr(buf, ptype, &cq) >= 0) { pp->p_fstype = gettype(cq, fstypenames); free(cq); } a157 1 (void)cgetclose(); CTMFN lib/libc/stdlib/tdelete.c 1004 1004 644 d1cdb86638768d3d55d5fadbe16570aa 5a3e7bfdf992c68e96d810510a817cc9 168 d20 1 a20 1 __FBSDID("$FreeBSD: head/lib/libc/stdlib/tdelete.c 278301 2015-02-05 23:02:43Z pfg $"); d68 1 a68 2 if (p != *rootp) free(*rootp); /* D4: Free node */ CTMFN lib/libdevinfo/devinfo.h 1004 1004 644 18fc58b4d559b773bce34f2bc4ccaf99 7a2d4d7a915e499b7c66f51d5d9a1045 159 d27 1 a27 1 * $FreeBSD: head/lib/libdevinfo/devinfo.h 278299 2015-02-05 22:42:44Z jhb $ d53 1 a53 1 devinfo_state_t dd_state; /* attachment state of dev */ CTMFN release/doc/en_US.ISO8859-1/errata/article.xml 1004 1004 644 b139f14b61c5237d3d86347fe07f0f0d 2f1ad50171c6f4a7b69257f27c759f48 395 a6 2 d17 1 a17 1 $FreeBSD: head/release/doc/en_US.ISO8859-1/errata/article.xml 278266 2015-02-05 16:00:34Z gjb $ d20 1 a20 1 2015 d79 1 a79 7 &security; Errata Notices &errata; CTMFN release/doc/en_US.ISO8859-1/relnotes/article.xml 1004 1004 644 a2aeef8acb4eb00638ed4727b69edba3 bedbaa495ed1c67850e9a2f2c84c0d84 308 a9 2 d21 1 a21 1 $FreeBSD: head/release/doc/en_US.ISO8859-1/relnotes/article.xml 278265 2015-02-05 15:46:01Z gjb $ d141 2 a142 1 &security; d148 2 a149 1 &errata; CTMFM release/doc/share/xml/errata.xml 1004 1004 644 ef544512a5185205b2ce3b551dda2c80 646 Errata Date Topic No errata notices.     CTMFN release/doc/share/xml/release.ent 1004 1004 644 67d1f612716c9ede6aa041ad80a63c3e 6dce8872b1ae3b6716df475e7144b11b 432 d3 1 a3 1 $FreeBSD: head/release/doc/share/xml/release.ent 278262 2015-02-05 14:08:57Z gjb $ d19 1 a19 1 d28 1 a28 4 d54 1 a54 1 CTMFM release/doc/share/xml/security.xml 1004 1004 644 466713c99822aaec84a941611efbdb35 646 Advisory Date Topic No advisories.     CTMFN sbin/ipfw/ipfw2.c 1004 1004 644 ab3e62afaadc44454add182bce8f8e62 0c3e0f66786ccc425eb10db980cbf652 297 d20 1 a20 1 * $FreeBSD: head/sbin/ipfw/ipfw2.c 278261 2015-02-05 14:08:33Z melifaro $ a63 1 int show_time; /* show timestamp */ d2405 1 a2405 1 if ((fo->show_counters | fo->show_time) != 0) { a2506 1 sfo.show_time = co.do_time; d2510 1 a2510 1 if ((sfo.show_counters | sfo.show_time) != 0) CTMFN sys/arm/broadcom/bcm2835/files.bcm2835 1004 1004 644 274bb32c92c1e3eb337b8ca6543b4442 6dd1e237b6e9fa8b35c3c212e58b1ebc 1492 d1 1 a1 1 # $FreeBSD: head/sys/arm/broadcom/bcm2835/files.bcm2835 278277 2015-02-05 19:54:03Z gonzo $ a29 20 # VideoCore driver contrib/vchiq/interface/compat/vchi_bsd.c standard \ compile-with "${NORMAL_C} -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" contrib/vchiq/interface/vchiq_arm/vchiq_2835_arm.c standard \ compile-with "${NORMAL_C} -Wno-unused -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" contrib/vchiq/interface/vchiq_arm/vchiq_arm.c standard \ compile-with "${NORMAL_C} -Wno-unused -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" contrib/vchiq/interface/vchiq_arm/vchiq_connected.c standard \ compile-with "${NORMAL_C} -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" contrib/vchiq/interface/vchiq_arm/vchiq_core.c standard \ compile-with "${NORMAL_C} -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" contrib/vchiq/interface/vchiq_arm/vchiq_kern_lib.c standard \ compile-with "${NORMAL_C} -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" contrib/vchiq/interface/vchiq_arm/vchiq_kmod.c standard \ compile-with "${NORMAL_C} -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" contrib/vchiq/interface/vchiq_arm/vchiq_shim.c standard \ compile-with "${NORMAL_C} -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" contrib/vchiq/interface/vchiq_arm/vchiq_util.c standard \ compile-with "${NORMAL_C} -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -I$S/contrib/vchiq" CTMFN sys/boot/amd64/boot1.efi/fat.tmpl.bz2.uu 1004 1004 644 bf69114a5545b7279a8bc2743a132f79 2cd75c4b51f27ebc59543f6ba6b7b5fd 972 d3 1 a3 1 $FreeBSD: head/sys/boot/amd64/boot1.efi/fat.tmpl.bz2.uu 278304 2015-02-06 01:42:17Z rpaulo $ d5 15 a19 14 M0EIH.3%!629362AK*D(`&I+____[ZZKJZ_^N_ZO^Z_Z_OJ[L`4`!7I0$#&$" M0$!$3&(I-DTU,)ZAZ0VA-!M0T'J`>H#"9 M'I#0-H&HQI&0&3&FH>H>*`JHHU3V]1%/4/2``T#0`!H``#0`````#1H,@``6 M'1&G'&@?$6[T#A)?X8$A160"20BO#")0J4TB1*4GXF$B4I,&>43+=_?K=#3* M6]R"ZNKJZI,9*68E8*E2Q M4J5*E3'(1830A"$(12A-"<(0A#]VD)H0A"$,>I0FA"$(0I\>P^=F5:M6K5JU M:DI3:64UN;[7%5B]Y-^\]@_K@B:N\/,5F%&H<\G#IXQXAEFC&D?![6%0'6MR MX1@@%FC"FD`M7,/SXFNG:2`'-0<-C$8^+$N.7M1B,^6)9,DV9,0A\OL<:C"L ML1V&,<\9YRB>XV#BG")'6NKRK^("UF2XO?_L!#29">MGDF$R3).!PX&%E,4C M''=(FL1.`_3?CN@-IB2PI3!FF\<8X.X@D,>CA90I)#M$XRPNDFJELL<3=1?8 M2B7\5Z64,!7Z;EEBW-MXN-4IJ@W$462]-*\YCR,-B,5[W?=3&L/U>SX,WV#\ M\B`:I"'0Z)5"$1B.E)(K[5I4RS`%R$>Y\D0NR*,;<9CZ:^V3P(I?D> Makefile.fat d50 1 a50 1 echo '$FreeBSD: head/sys/boot/amd64/boot1.efi/generate-fat.sh 278304 2015-02-06 01:42:17Z rpaulo $' >> $OUTPUT_FILE.bz2.uu CTMFN sys/conf/kern.pre.mk 1004 1004 644 711191f2262ffc3c1e1d5f46457e52d5 3617caed717633c4acfcf2193e0cd8e7 229 d1 1 a1 1 # $FreeBSD: head/sys/conf/kern.pre.mk 278306 2015-02-06 03:49:31Z davide $ a81 3 # ... and the same for vchiq INCLUDES+= -I$S/contrib/vchiq d174 1 a174 1 --warn-common --export-dynamic --dynamic-linker /red/herring \ CTMDM sys/contrib/vchiq 1004 1004 755 CTMDM sys/contrib/vchiq/interface 1004 1004 755 CTMDM sys/contrib/vchiq/interface/compat 1004 1004 755 CTMFM sys/contrib/vchiq/interface/compat/list.h 1004 1004 644 b07dfd46c67be9110639ebc847eda3eb 6939 /* $NetBSD: list.h,v 1.5 2014/08/20 15:26:52 riastradh Exp $ */ /*- * Copyright (c) 2013 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Taylor R. Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Notes on porting: * * - LIST_HEAD(x) means a declaration `struct list_head x = * LIST_HEAD_INIT(x)' in Linux, but something else in NetBSD. * Replace by the expansion. * * - The `_rcu' routines here are not actually pserialize(9)-safe. * They need dependent read memory barriers added. Please fix this * if you need to use them with pserialize(9). */ #ifndef _LINUX_LIST_H_ #define _LINUX_LIST_H_ #include #define container_of(ptr, type, member) \ ({ \ __typeof(((type *)0)->member) *_p = (ptr); \ (type *)((char *)_p - offsetof(type, member)); \ }) /* * Doubly-linked lists. */ struct list_head { struct list_head *prev; struct list_head *next; }; #define LIST_HEAD_INIT(name) { .prev = &(name), .next = &(name) } static inline void INIT_LIST_HEAD(struct list_head *head) { head->prev = head; head->next = head; } static inline struct list_head * list_first(const struct list_head *head) { return head->next; } static inline struct list_head * list_last(const struct list_head *head) { return head->prev; } static inline struct list_head * list_next(const struct list_head *node) { return node->next; } static inline struct list_head * list_prev(const struct list_head *node) { return node->prev; } static inline int list_empty(const struct list_head *head) { return (head->next == head); } static inline int list_is_singular(const struct list_head *head) { if (list_empty(head)) return false; if (head->next != head->prev) return false; return true; } static inline void __list_add_between(struct list_head *prev, struct list_head *node, struct list_head *next) { prev->next = node; node->prev = prev; node->next = next; next->prev = node; } static inline void list_add(struct list_head *node, struct list_head *head) { __list_add_between(head, node, head->next); } static inline void list_add_tail(struct list_head *node, struct list_head *head) { __list_add_between(head->prev, node, head); } static inline void list_del(struct list_head *entry) { entry->prev->next = entry->next; entry->next->prev = entry->prev; } static inline void __list_splice_between(struct list_head *prev, const struct list_head *list, struct list_head *next) { struct list_head *first = list->next; struct list_head *last = list->prev; first->prev = prev; prev->next = first; last->next = next; next->prev = last; } static inline void list_splice(const struct list_head *list, struct list_head *head) { if (!list_empty(list)) __list_splice_between(head, list, head->next); } static inline void list_splice_tail(const struct list_head *list, struct list_head *head) { if (!list_empty(list)) __list_splice_between(head->prev, list, head); } static inline void list_move(struct list_head *node, struct list_head *head) { list_del(node); list_add(node, head); } static inline void list_move_tail(struct list_head *node, struct list_head *head) { list_del(node); list_add_tail(node, head); } static inline void list_replace(struct list_head *old, struct list_head *new) { new->prev = old->prev; old->prev->next = new; new->next = old->next; old->next->prev = new; } static inline void list_del_init(struct list_head *node) { list_del(node); INIT_LIST_HEAD(node); } #define list_entry(PTR, TYPE, FIELD) container_of(PTR, TYPE, FIELD) #define list_first_entry(PTR, TYPE, FIELD) \ list_entry(list_first((PTR)), TYPE, FIELD) #define list_last_entry(PTR, TYPE, FIELD) \ list_entry(list_last((PTR)), TYPE, FIELD) #define list_next_entry(ENTRY, FIELD) \ list_entry(list_next(&(ENTRY)->FIELD), typeof(*(ENTRY)), FIELD) #define list_prev_entry(ENTRY, FIELD) \ list_entry(list_prev(&(ENTRY)->FIELD), typeof(*(ENTRY)), FIELD) #define list_for_each(VAR, HEAD) \ for ((VAR) = list_first((HEAD)); \ (VAR) != (HEAD); \ (VAR) = list_next((VAR))) #define list_for_each_safe(VAR, NEXT, HEAD) \ for ((VAR) = list_first((HEAD)); \ ((VAR) != (HEAD)) && ((NEXT) = list_next((VAR)), 1); \ (VAR) = (NEXT)) #define list_for_each_entry(VAR, HEAD, FIELD) \ for ((VAR) = list_entry(list_first((HEAD)), typeof(*(VAR)), FIELD); \ &(VAR)->FIELD != (HEAD); \ (VAR) = list_entry(list_next(&(VAR)->FIELD), typeof(*(VAR)), \ FIELD)) #define list_for_each_entry_reverse(VAR, HEAD, FIELD) \ for ((VAR) = list_entry(list_last((HEAD)), typeof(*(VAR)), FIELD); \ &(VAR)->FIELD != (HEAD); \ (VAR) = list_entry(list_prev(&(VAR)->FIELD), typeof(*(VAR)), \ FIELD)) #define list_for_each_entry_safe(VAR, NEXT, HEAD, FIELD) \ for ((VAR) = list_entry(list_first((HEAD)), typeof(*(VAR)), FIELD); \ (&(VAR)->FIELD != (HEAD)) && \ ((NEXT) = list_entry(list_next(&(VAR)->FIELD), \ typeof(*(VAR)), FIELD), 1); \ (VAR) = (NEXT)) #define list_for_each_entry_continue(VAR, HEAD, FIELD) \ for ((VAR) = list_next_entry((VAR), FIELD); \ &(VAR)->FIELD != (HEAD); \ (VAR) = list_next_entry((VAR), FIELD)) #define list_for_each_entry_continue_reverse(VAR, HEAD, FIELD) \ for ((VAR) = list_prev_entry((VAR), FIELD); \ &(VAR)->FIELD != (HEAD); \ (VAR) = list_prev_entry((VAR), FIELD)) #define list_for_each_entry_safe_from(VAR, NEXT, HEAD, FIELD) \ for (; \ (&(VAR)->FIELD != (HEAD)) && \ ((NEXT) = list_next_entry((VAR), FIELD)); \ (VAR) = (NEXT)) #endif /* _LINUX_LIST_H_ */ CTMFM sys/contrib/vchiq/interface/compat/vchi_bsd.c 1004 1004 644 597dcda51d535bfdc5a2f42d0677b8f3 9545 /*- * Copyright (c) 2010 Max Khon * All rights reserved. * * This software was developed by Max Khon under sponsorship from * the FreeBSD Foundation and Ethon Technologies GmbH. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: bsd-compat.c 9253 2010-09-02 10:12:09Z fjoe $ */ #include #include #include #include #include #include #include #include #include #include #include #include "mbox_if.h" #include MALLOC_DEFINE(M_VCHI, "VCHI", "VCHI"); /* * Timer API */ static void run_timer(void *arg) { struct timer_list *t = (struct timer_list *) arg; void (*function)(unsigned long); mtx_lock_spin(&t->mtx); if (callout_pending(&t->callout)) { /* callout was reset */ mtx_unlock_spin(&t->mtx); return; } if (!callout_active(&t->callout)) { /* callout was stopped */ mtx_unlock_spin(&t->mtx); return; } callout_deactivate(&t->callout); function = t->function; mtx_unlock_spin(&t->mtx); function(t->data); } void init_timer(struct timer_list *t) { mtx_init(&t->mtx, "dahdi timer lock", NULL, MTX_SPIN); callout_init(&t->callout, CALLOUT_MPSAFE); t->expires = 0; /* * function and data are not initialized intentionally: * they are not initialized by Linux implementation too */ } void setup_timer(struct timer_list *t, void (*function)(unsigned long), unsigned long data) { t->function = function; t->data = data; init_timer(t); } void mod_timer(struct timer_list *t, unsigned long expires) { mtx_lock_spin(&t->mtx); callout_reset(&t->callout, expires - jiffies, run_timer, t); mtx_unlock_spin(&t->mtx); } void add_timer(struct timer_list *t) { mod_timer(t, t->expires); } int del_timer_sync(struct timer_list *t) { mtx_lock_spin(&t->mtx); callout_stop(&t->callout); mtx_unlock_spin(&t->mtx); mtx_destroy(&t->mtx); return 0; } int del_timer(struct timer_list *t) { del_timer_sync(t); return 0; } /* * Completion API */ void init_completion(struct completion *c) { cv_init(&c->cv, "VCHI completion cv"); mtx_init(&c->lock, "VCHI completion lock", "condvar", MTX_DEF); c->done = 0; } void destroy_completion(struct completion *c) { cv_destroy(&c->cv); mtx_destroy(&c->lock); } void complete(struct completion *c) { mtx_lock(&c->lock); if (c->done >= 0) { KASSERT(c->done < INT_MAX, ("c->done overflow")); /* XXX check */ c->done++; cv_signal(&c->cv); } else { KASSERT(c->done == -1, ("Invalid value of c->done: %d", c->done)); } mtx_unlock(&c->lock); } void complete_all(struct completion *c) { mtx_lock(&c->lock); if (c->done >= 0) { KASSERT(c->done < INT_MAX, ("c->done overflow")); /* XXX check */ c->done = -1; cv_broadcast(&c->cv); } else { KASSERT(c->done == -1, ("Invalid value of c->done: %d", c->done)); } mtx_unlock(&c->lock); } void INIT_COMPLETION_locked(struct completion *c) { mtx_lock(&c->lock); c->done = 0; mtx_unlock(&c->lock); } static void _completion_claim(struct completion *c) { KASSERT(mtx_owned(&c->lock), ("_completion_claim should be called with acquired lock")); KASSERT(c->done != 0, ("_completion_claim on non-waited completion")); if (c->done > 0) c->done--; else KASSERT(c->done == -1, ("Invalid value of c->done: %d", c->done)); } void wait_for_completion(struct completion *c) { mtx_lock(&c->lock); if (!c->done) cv_wait(&c->cv, &c->lock); c->done--; mtx_unlock(&c->lock); } int try_wait_for_completion(struct completion *c) { int res = 0; mtx_lock(&c->lock); if (!c->done) res = 1; else c->done--; mtx_unlock(&c->lock); return res == 0; } int wait_for_completion_interruptible_timeout(struct completion *c, unsigned long timeout) { int res = 0; unsigned long start, now; start = jiffies; mtx_lock(&c->lock); while (c->done == 0) { res = cv_timedwait_sig(&c->cv, &c->lock, timeout); if (res) goto out; now = jiffies; if (timeout < (now - start)) { res = EWOULDBLOCK; goto out; } timeout -= (now - start); start = now; } _completion_claim(c); res = 0; out: mtx_unlock(&c->lock); if (res == EWOULDBLOCK) { return 0; } else if ((res == EINTR) || (res == ERESTART)) { return -ERESTART; } else { KASSERT((res == 0), ("res = %d", res)); return timeout; } } int wait_for_completion_interruptible(struct completion *c) { int res = 0; mtx_lock(&c->lock); while (c->done == 0) { res = cv_wait_sig(&c->cv, &c->lock); if (res) goto out; } _completion_claim(c); out: mtx_unlock(&c->lock); if ((res == EINTR) || (res == ERESTART)) res = -ERESTART; return res; } int wait_for_completion_killable(struct completion *c) { return wait_for_completion_interruptible(c); } /* * Semaphore API */ void sema_sysinit(void *arg) { struct semaphore *s = arg; printf("sema_sysinit\n"); _sema_init(s, 1); } void _sema_init(struct semaphore *s, int value) { bzero(s, sizeof(*s)); mtx_init(&s->mtx, "sema lock", "VCHIQ sepmaphore backing lock", MTX_DEF | MTX_NOWITNESS | MTX_QUIET); cv_init(&s->cv, "sema cv"); s->value = value; } void _sema_destroy(struct semaphore *s) { mtx_destroy(&s->mtx); cv_destroy(&s->cv); } void down(struct semaphore *s) { mtx_lock(&s->mtx); while (s->value == 0) { s->waiters++; cv_wait(&s->cv, &s->mtx); s->waiters--; } s->value--; mtx_unlock(&s->mtx); } int down_interruptible(struct semaphore *s) { int ret ; ret = 0; mtx_lock(&s->mtx); while (s->value == 0) { s->waiters++; ret = cv_wait_sig(&s->cv, &s->mtx); s->waiters--; if (ret == EINTR) { mtx_unlock(&s->mtx); return (-EINTR); } if (ret == ERESTART) continue; } s->value--; mtx_unlock(&s->mtx); return (0); } int down_trylock(struct semaphore *s) { int ret; ret = 0; mtx_lock(&s->mtx); if (s->value > 0) { /* Success. */ s->value--; ret = 0; } else { ret = -EAGAIN; } mtx_unlock(&s->mtx); return (ret); } void up(struct semaphore *s) { mtx_lock(&s->mtx); s->value++; if (s->waiters && s->value > 0) cv_signal(&s->cv); mtx_unlock(&s->mtx); } /* * Logging API */ void rlprintf(int pps, const char *fmt, ...) { va_list ap; static struct timeval last_printf; static int count; if (ppsratecheck(&last_printf, &count, pps)) { va_start(ap, fmt); vprintf(fmt, ap); va_end(ap); } } void device_rlprintf(int pps, device_t dev, const char *fmt, ...) { va_list ap; static struct timeval last_printf; static int count; if (ppsratecheck(&last_printf, &count, pps)) { va_start(ap, fmt); device_print_prettyname(dev); vprintf(fmt, ap); va_end(ap); } } /* * Signals API */ void flush_signals(VCHIQ_THREAD_T thr) { printf("Implement ME: %s\n", __func__); } int fatal_signal_pending(VCHIQ_THREAD_T thr) { printf("Implement ME: %s\n", __func__); return (0); } /* * kthread API */ /* * This is a hack to avoid memory leak */ #define MAX_THREAD_DATA_SLOTS 32 static int thread_data_slot = 0; struct thread_data { void *data; int (*threadfn)(void *); }; static struct thread_data thread_slots[MAX_THREAD_DATA_SLOTS]; static void kthread_wrapper(void *data) { struct thread_data *slot; slot = data; slot->threadfn(slot->data); } VCHIQ_THREAD_T vchiq_thread_create(int (*threadfn)(void *data), void *data, const char namefmt[], ...) { VCHIQ_THREAD_T newp; va_list ap; char name[MAXCOMLEN+1]; struct thread_data *slot; if (thread_data_slot >= MAX_THREAD_DATA_SLOTS) { printf("kthread_create: out of thread data slots\n"); return (NULL); } slot = &thread_slots[thread_data_slot]; slot->data = data; slot->threadfn = threadfn; va_start(ap, namefmt); vsnprintf(name, sizeof(name), namefmt, ap); va_end(ap); newp = NULL; if (kproc_create(kthread_wrapper, (void*)slot, &newp, 0, 0, "%s", name) != 0) { /* Just to be sure */ newp = NULL; } else thread_data_slot++; return newp; } void set_user_nice(VCHIQ_THREAD_T thr, int nice) { /* NOOP */ } void wake_up_process(VCHIQ_THREAD_T thr) { /* NOOP */ } void bcm_mbox_write(int channel, uint32_t data) { device_t mbox; mbox = devclass_get_device(devclass_find("mbox"), 0); if (mbox) MBOX_WRITE(mbox, channel, data); } CTMFM sys/contrib/vchiq/interface/compat/vchi_bsd.h 1004 1004 644 7352e84e361852859ef1de65c037ac39 10825 /*- * Copyright (c) 2010 Max Khon * Copyright (c) 2012 Oleksandr Tymoshenko * Copyright (c) 2013 Jared D. McNeill * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef __VCHI_BSD_H__ #define __VCHI_BSD_H__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Copy from/to user API */ #define copy_from_user(to, from, n) copyin((from), (to), (n)) #define copy_to_user(to, from, n) copyout((from), (to), (n)) /* * Bit API */ static __inline int test_and_set_bit(int nr, volatile void *addr) { int val; do { val = *(volatile int *) addr; } while (atomic_cmpset_int(addr, val, val | (1 << nr)) == 0); return (val & (1 << nr)); } static __inline__ int test_and_clear_bit(int nr, volatile void *addr) { int val; do { val = *(volatile int *) addr; } while (atomic_cmpset_int(addr, val, val & ~(1 << nr)) == 0); return (val & (1 << nr)); } /* * Atomic API */ typedef volatile unsigned atomic_t; #define atomic_set(p, v) (*(p) = (v)) #define atomic_read(p) (*(p)) #define atomic_inc(p) atomic_add_int(p, 1) #define atomic_dec(p) atomic_subtract_int(p, 1) #define atomic_dec_and_test(p) (atomic_fetchadd_int(p, -1) == 1) #define atomic_inc_return(v) atomic_add_return(1, (v)) #define atomic_dec_return(v) atomic_sub_return(1, (v)) #define atomic_add(v, p) atomic_add_int(p, v) #define atomic_sub(v, p) atomic_subtract_int(p, v) #define ATOMIC_INIT(v) (v) static inline int atomic_add_return(int i, atomic_t *v) { return i + atomic_fetchadd_int(v, i); } static inline int atomic_sub_return(int i, atomic_t *v) { return atomic_fetchadd_int(v, -i) - i; } static inline int atomic_cmpxchg(atomic_t *v, int oldv, int newv) { if (atomic_cmpset_rel_int(v, oldv, newv)) return newv; else return *v; } static inline int atomic_xchg(atomic_t *v, int newv) { int oldv; if (newv == 0) return atomic_readandclear_int(v); else { do { oldv = atomic_load_acq_int(v); } while (!atomic_cmpset_rel_int(v, oldv, newv)); } return (oldv); } /* * Spinlock API */ typedef struct mtx spinlock_t; #define DEFINE_SPINLOCK(name) \ struct mtx name #define spin_lock_init(lock) mtx_init(lock, "VCHI spinlock " # lock, NULL, MTX_DEF) #define spin_lock_destroy(lock) mtx_destroy(lock) #define spin_lock(lock) mtx_lock(lock) #define spin_unlock(lock) mtx_unlock(lock) #define spin_lock_bh(lock) spin_lock(lock) #define spin_unlock_bh(lock) spin_unlock(lock) /* * Mutex API */ struct mutex { struct mtx mtx; }; #define lmutex_init(lock) mtx_init(&(lock)->mtx, #lock, NULL, MTX_DEF) #define lmutex_lock(lock) mtx_lock(&(lock)->mtx) #define lmutex_lock_interruptible(lock) (mtx_lock(&(lock)->mtx),0) #define lmutex_unlock(lock) mtx_unlock(&(lock)->mtx) #define lmutex_destroy(lock) mtx_destroy(&(lock)->mtx) /* * Rwlock API */ typedef struct sx rwlock_t; #if defined(SX_ADAPTIVESPIN) && !defined(SX_NOADAPTIVE) #define SX_NOADAPTIVE SX_ADAPTIVESPIN #endif #define DEFINE_RWLOCK(name) \ struct sx name; \ SX_SYSINIT(name, &name, #name) #define rwlock_init(rwlock) sx_init_flags(rwlock, "VCHI rwlock", SX_NOADAPTIVE) #define read_lock(rwlock) sx_slock(rwlock) #define read_unlock(rwlock) sx_sunlock(rwlock) #define write_lock(rwlock) sx_xlock(rwlock) #define write_unlock(rwlock) sx_xunlock(rwlock) #define write_lock_irqsave(rwlock, flags) \ do { \ sx_xlock(rwlock); \ (void) &(flags); \ } while (0) #define write_unlock_irqrestore(rwlock, flags) \ sx_xunlock(rwlock) #define read_lock_bh(rwlock) sx_slock(rwlock) #define read_unlock_bh(rwlock) sx_sunlock(rwlock) #define write_lock_bh(rwlock) sx_xlock(rwlock) #define write_unlock_bh(rwlock) sx_xunlock(rwlock) /* * Timer API */ struct timer_list { struct mtx mtx; struct callout callout; unsigned long expires; void (*function)(unsigned long); unsigned long data; }; void init_timer(struct timer_list *t); void setup_timer(struct timer_list *t, void (*function)(unsigned long), unsigned long data); void mod_timer(struct timer_list *t, unsigned long expires); void add_timer(struct timer_list *t); int del_timer(struct timer_list *t); int del_timer_sync(struct timer_list *t); /* * Completion API */ struct completion { struct cv cv; struct mtx lock; int done; }; void init_completion(struct completion *c); void destroy_completion(struct completion *c); int try_wait_for_completion(struct completion *); int wait_for_completion_interruptible(struct completion *); int wait_for_completion_interruptible_timeout(struct completion *, unsigned long ticks); int wait_for_completion_killable(struct completion *); void wait_for_completion(struct completion *c); void complete(struct completion *c); void complete_all(struct completion *c); void INIT_COMPLETION_locked(struct completion *c); #define INIT_COMPLETION(x) INIT_COMPLETION_locked(&(x)) /* * Semaphore API */ struct semaphore { struct mtx mtx; struct cv cv; int value; int waiters; }; #define DEFINE_SEMAPHORE(name) \ struct semaphore name; \ SYSINIT(name##_sema_sysinit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ sema_sysinit, &name); \ SYSUNINIT(name##_sema_sysuninit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ _sema_destroy, __DEVOLATILE(void *, &(name))) void sema_sysinit(void *arg); void _sema_init(struct semaphore *s, int value); void _sema_destroy(struct semaphore *s); void down(struct semaphore *s); int down_interruptible(struct semaphore *s); int down_trylock(struct semaphore *s); void up(struct semaphore *s); /* * Logging and assertions API */ void rlprintf(int pps, const char *fmt, ...) __printflike(2, 3); void device_rlprintf(int pps, device_t dev, const char *fmt, ...) __printflike(3, 4); #define might_sleep() #define WARN(condition, msg) \ ({ \ int __ret_warn_on = !!(condition); \ if (unlikely(__ret_warn_on)) \ printf((msg)); \ unlikely(__ret_warn_on); \ }) #define WARN_ON(condition) \ ({ \ int __ret_warn_on = !!(condition); \ if (unlikely(__ret_warn_on)) \ printf("WARN_ON: " #condition "\n"); \ unlikely(__ret_warn_on); \ }) #define WARN_ON_ONCE(condition) ({ \ static int __warned; \ int __ret_warn_once = !!(condition); \ \ if (unlikely(__ret_warn_once)) \ if (WARN_ON(!__warned)) \ __warned = 1; \ unlikely(__ret_warn_once); \ }) #define BUG_ON(cond) \ do { \ if (cond) \ panic("BUG_ON: " #cond); \ } while (0) #define BUG() \ do { \ panic("BUG: %s:%d", __FILE__, __LINE__); \ } while (0) #define vchiq_static_assert(cond) CTASSERT(cond) #define KERN_EMERG "<0>" /* system is unusable */ #define KERN_ALERT "<1>" /* action must be taken immediately */ #define KERN_CRIT "<2>" /* critical conditions */ #define KERN_ERR "<3>" /* error conditions */ #define KERN_WARNING "<4>" /* warning conditions */ #define KERN_NOTICE "<5>" /* normal but significant condition */ #define KERN_INFO "<6>" /* informational */ #define KERN_DEBUG "<7>" /* debug-level messages */ #define KERN_CONT "" #define printk(fmt, args...) printf(fmt, ##args) #define vprintk(fmt, args) vprintf(fmt, args) /* * Malloc API */ #define GFP_KERNEL 0 #define GFP_ATOMIC 0 MALLOC_DECLARE(M_VCHI); #define kmalloc(size, flags) malloc((size), M_VCHI, M_NOWAIT | M_ZERO) #define kcalloc(n, size, flags) malloc((n) * (size), M_VCHI, M_NOWAIT | M_ZERO) #define kzalloc(a, b) kcalloc(1, (a), (b)) #define kfree(p) free(p, M_VCHI) /* * Kernel module API */ #define __init #define __exit #define __devinit #define __devexit #define __devinitdata /* * Time API */ #if 1 /* emulate jiffies */ static inline unsigned long _jiffies(void) { struct timeval tv; microuptime(&tv); return tvtohz(&tv); } static inline unsigned long msecs_to_jiffies(unsigned long msecs) { struct timeval tv; tv.tv_sec = msecs / 1000000UL; tv.tv_usec = msecs % 1000000UL; return tvtohz(&tv); } #define jiffies _jiffies() #else #define jiffies ticks #endif #define HZ hz #define udelay(usec) DELAY(usec) #define mdelay(msec) DELAY((msec) * 1000) #define schedule_timeout(jiff) pause("dhdslp", jiff) #if defined(msleep) #undef msleep #endif #define msleep(msec) mdelay(msec) #define time_after(a, b) ((a) > (b)) #define time_after_eq(a, b) ((a) >= (b)) #define time_before(a, b) time_after((b), (a)) /* * kthread API (we use proc) */ typedef struct proc * VCHIQ_THREAD_T; VCHIQ_THREAD_T vchiq_thread_create(int (*threadfn)(void *data), void *data, const char namefmt[], ...); void set_user_nice(VCHIQ_THREAD_T p, int nice); void wake_up_process(VCHIQ_THREAD_T p); /* * Proc APIs */ void flush_signals(VCHIQ_THREAD_T); int fatal_signal_pending(VCHIQ_THREAD_T); /* * mbox API */ void bcm_mbox_write(int channel, uint32_t data); /* * Misc API */ #define ENODATA EINVAL #define __user #define likely(x) __builtin_expect(!!(x), 1) #define unlikely(x) __builtin_expect(!!(x), 0) #define current curproc #define EXPORT_SYMBOL(x) #define PAGE_ALIGN(addr) round_page(addr) typedef void irqreturn_t; typedef off_t loff_t; #define BCM2835_MBOX_CHAN_VCHIQ 3 #define smp_mb wmb #define smp_rmb rmb #define smp_wmb wmb #define device_print_prettyname(dev) device_printf((dev), "") #endif /* __VCHI_BSD_H__ */ CTMDM sys/contrib/vchiq/interface/vchi 1004 1004 755 CTMDM sys/contrib/vchiq/interface/vchi/connections 1004 1004 755 CTMFM sys/contrib/vchiq/interface/vchi/connections/connection.h 1004 1004 644 c3d5f9727c5895bf5757ccf85850c2c7 16310 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef CONNECTION_H_ #define CONNECTION_H_ #include "interface/vchi/vchi_cfg_internal.h" #include "interface/vchi/vchi_common.h" #include "interface/vchi/message_drivers/message.h" /****************************************************************************** Global defs *****************************************************************************/ // Opaque handle for a connection / service pair typedef struct opaque_vchi_connection_connected_service_handle_t *VCHI_CONNECTION_SERVICE_HANDLE_T; // opaque handle to the connection state information typedef struct opaque_vchi_connection_info_t VCHI_CONNECTION_STATE_T; typedef struct vchi_connection_t VCHI_CONNECTION_T; /****************************************************************************** API *****************************************************************************/ // Routine to init a connection with a particular low level driver typedef VCHI_CONNECTION_STATE_T * (*VCHI_CONNECTION_INIT_T)( struct vchi_connection_t * connection, const VCHI_MESSAGE_DRIVER_T * driver ); // Routine to control CRC enabling at a connection level typedef int32_t (*VCHI_CONNECTION_CRC_CONTROL_T)( VCHI_CONNECTION_STATE_T *state_handle, VCHI_CRC_CONTROL_T control ); // Routine to create a service typedef int32_t (*VCHI_CONNECTION_SERVICE_CONNECT_T)( VCHI_CONNECTION_STATE_T *state_handle, int32_t service_id, uint32_t rx_fifo_size, uint32_t tx_fifo_size, int server, VCHI_CALLBACK_T callback, void *callback_param, int32_t want_crc, int32_t want_unaligned_bulk_rx, int32_t want_unaligned_bulk_tx, VCHI_CONNECTION_SERVICE_HANDLE_T *service_handle ); // Routine to close a service typedef int32_t (*VCHI_CONNECTION_SERVICE_DISCONNECT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle ); // Routine to queue a message typedef int32_t (*VCHI_CONNECTION_SERVICE_QUEUE_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, const void *data, uint32_t data_size, VCHI_FLAGS_T flags, void *msg_handle ); // scatter-gather (vector) message queueing typedef int32_t (*VCHI_CONNECTION_SERVICE_QUEUE_MESSAGEV_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, VCHI_MSG_VECTOR_T *vector, uint32_t count, VCHI_FLAGS_T flags, void *msg_handle ); // Routine to dequeue a message typedef int32_t (*VCHI_CONNECTION_SERVICE_DEQUEUE_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void *data, uint32_t max_data_size_to_read, uint32_t *actual_msg_size, VCHI_FLAGS_T flags ); // Routine to peek at a message typedef int32_t (*VCHI_CONNECTION_SERVICE_PEEK_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void **data, uint32_t *msg_size, VCHI_FLAGS_T flags ); // Routine to hold a message typedef int32_t (*VCHI_CONNECTION_SERVICE_HOLD_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void **data, uint32_t *msg_size, VCHI_FLAGS_T flags, void **message_handle ); // Routine to initialise a received message iterator typedef int32_t (*VCHI_CONNECTION_SERVICE_LOOKAHEAD_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, VCHI_MSG_ITER_T *iter, VCHI_FLAGS_T flags ); // Routine to release a held message typedef int32_t (*VCHI_CONNECTION_HELD_MSG_RELEASE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void *message_handle ); // Routine to get info on a held message typedef int32_t (*VCHI_CONNECTION_HELD_MSG_INFO_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void *message_handle, void **data, int32_t *msg_size, uint32_t *tx_timestamp, uint32_t *rx_timestamp ); // Routine to check whether the iterator has a next message typedef int32_t (*VCHI_CONNECTION_MSG_ITER_HAS_NEXT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service, const VCHI_MSG_ITER_T *iter ); // Routine to advance the iterator typedef int32_t (*VCHI_CONNECTION_MSG_ITER_NEXT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service, VCHI_MSG_ITER_T *iter, void **data, uint32_t *msg_size ); // Routine to remove the last message returned by the iterator typedef int32_t (*VCHI_CONNECTION_MSG_ITER_REMOVE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service, VCHI_MSG_ITER_T *iter ); // Routine to hold the last message returned by the iterator typedef int32_t (*VCHI_CONNECTION_MSG_ITER_HOLD_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service, VCHI_MSG_ITER_T *iter, void **msg_handle ); // Routine to transmit bulk data typedef int32_t (*VCHI_CONNECTION_BULK_QUEUE_TRANSMIT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, const void *data_src, uint32_t data_size, VCHI_FLAGS_T flags, void *bulk_handle ); // Routine to receive data typedef int32_t (*VCHI_CONNECTION_BULK_QUEUE_RECEIVE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void *data_dst, uint32_t data_size, VCHI_FLAGS_T flags, void *bulk_handle ); // Routine to report if a server is available typedef int32_t (*VCHI_CONNECTION_SERVER_PRESENT)( VCHI_CONNECTION_STATE_T *state, int32_t service_id, int32_t peer_flags ); // Routine to report the number of RX slots available typedef int (*VCHI_CONNECTION_RX_SLOTS_AVAILABLE)( const VCHI_CONNECTION_STATE_T *state ); // Routine to report the RX slot size typedef uint32_t (*VCHI_CONNECTION_RX_SLOT_SIZE)( const VCHI_CONNECTION_STATE_T *state ); // Callback to indicate that the other side has added a buffer to the rx bulk DMA FIFO typedef void (*VCHI_CONNECTION_RX_BULK_BUFFER_ADDED)(VCHI_CONNECTION_STATE_T *state, int32_t service, uint32_t length, MESSAGE_TX_CHANNEL_T channel, uint32_t channel_params, uint32_t data_length, uint32_t data_offset); // Callback to inform a service that a Xon or Xoff message has been received typedef void (*VCHI_CONNECTION_FLOW_CONTROL)(VCHI_CONNECTION_STATE_T *state, int32_t service_id, int32_t xoff); // Callback to inform a service that a server available reply message has been received typedef void (*VCHI_CONNECTION_SERVER_AVAILABLE_REPLY)(VCHI_CONNECTION_STATE_T *state, int32_t service_id, uint32_t flags); // Callback to indicate that bulk auxiliary messages have arrived typedef void (*VCHI_CONNECTION_BULK_AUX_RECEIVED)(VCHI_CONNECTION_STATE_T *state); // Callback to indicate that bulk auxiliary messages have arrived typedef void (*VCHI_CONNECTION_BULK_AUX_TRANSMITTED)(VCHI_CONNECTION_STATE_T *state, void *handle); // Callback with all the connection info you require typedef void (*VCHI_CONNECTION_INFO)(VCHI_CONNECTION_STATE_T *state, uint32_t protocol_version, uint32_t slot_size, uint32_t num_slots, uint32_t min_bulk_size); // Callback to inform of a disconnect typedef void (*VCHI_CONNECTION_DISCONNECT)(VCHI_CONNECTION_STATE_T *state, uint32_t flags); // Callback to inform of a power control request typedef void (*VCHI_CONNECTION_POWER_CONTROL)(VCHI_CONNECTION_STATE_T *state, MESSAGE_TX_CHANNEL_T channel, int32_t enable); // allocate memory suitably aligned for this connection typedef void * (*VCHI_BUFFER_ALLOCATE)(VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, uint32_t * length); // free memory allocated by buffer_allocate typedef void (*VCHI_BUFFER_FREE)(VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void * address); /****************************************************************************** System driver struct *****************************************************************************/ struct opaque_vchi_connection_api_t { // Routine to init the connection VCHI_CONNECTION_INIT_T init; // Connection-level CRC control VCHI_CONNECTION_CRC_CONTROL_T crc_control; // Routine to connect to or create service VCHI_CONNECTION_SERVICE_CONNECT_T service_connect; // Routine to disconnect from a service VCHI_CONNECTION_SERVICE_DISCONNECT_T service_disconnect; // Routine to queue a message VCHI_CONNECTION_SERVICE_QUEUE_MESSAGE_T service_queue_msg; // scatter-gather (vector) message queue VCHI_CONNECTION_SERVICE_QUEUE_MESSAGEV_T service_queue_msgv; // Routine to dequeue a message VCHI_CONNECTION_SERVICE_DEQUEUE_MESSAGE_T service_dequeue_msg; // Routine to peek at a message VCHI_CONNECTION_SERVICE_PEEK_MESSAGE_T service_peek_msg; // Routine to hold a message VCHI_CONNECTION_SERVICE_HOLD_MESSAGE_T service_hold_msg; // Routine to initialise a received message iterator VCHI_CONNECTION_SERVICE_LOOKAHEAD_MESSAGE_T service_look_ahead_msg; // Routine to release a message VCHI_CONNECTION_HELD_MSG_RELEASE_T held_msg_release; // Routine to get information on a held message VCHI_CONNECTION_HELD_MSG_INFO_T held_msg_info; // Routine to check for next message on iterator VCHI_CONNECTION_MSG_ITER_HAS_NEXT_T msg_iter_has_next; // Routine to get next message on iterator VCHI_CONNECTION_MSG_ITER_NEXT_T msg_iter_next; // Routine to remove the last message returned by iterator VCHI_CONNECTION_MSG_ITER_REMOVE_T msg_iter_remove; // Routine to hold the last message returned by iterator VCHI_CONNECTION_MSG_ITER_HOLD_T msg_iter_hold; // Routine to transmit bulk data VCHI_CONNECTION_BULK_QUEUE_TRANSMIT_T bulk_queue_transmit; // Routine to receive data VCHI_CONNECTION_BULK_QUEUE_RECEIVE_T bulk_queue_receive; // Routine to report the available servers VCHI_CONNECTION_SERVER_PRESENT server_present; // Routine to report the number of RX slots available VCHI_CONNECTION_RX_SLOTS_AVAILABLE connection_rx_slots_available; // Routine to report the RX slot size VCHI_CONNECTION_RX_SLOT_SIZE connection_rx_slot_size; // Callback to indicate that the other side has added a buffer to the rx bulk DMA FIFO VCHI_CONNECTION_RX_BULK_BUFFER_ADDED rx_bulk_buffer_added; // Callback to inform a service that a Xon or Xoff message has been received VCHI_CONNECTION_FLOW_CONTROL flow_control; // Callback to inform a service that a server available reply message has been received VCHI_CONNECTION_SERVER_AVAILABLE_REPLY server_available_reply; // Callback to indicate that bulk auxiliary messages have arrived VCHI_CONNECTION_BULK_AUX_RECEIVED bulk_aux_received; // Callback to indicate that a bulk auxiliary message has been transmitted VCHI_CONNECTION_BULK_AUX_TRANSMITTED bulk_aux_transmitted; // Callback to provide information about the connection VCHI_CONNECTION_INFO connection_info; // Callback to notify that peer has requested disconnect VCHI_CONNECTION_DISCONNECT disconnect; // Callback to notify that peer has requested power change VCHI_CONNECTION_POWER_CONTROL power_control; // allocate memory suitably aligned for this connection VCHI_BUFFER_ALLOCATE buffer_allocate; // free memory allocated by buffer_allocate VCHI_BUFFER_FREE buffer_free; }; struct vchi_connection_t { const VCHI_CONNECTION_API_T *api; VCHI_CONNECTION_STATE_T *state; #ifdef VCHI_COARSE_LOCKING struct semaphore sem; #endif }; #endif /* CONNECTION_H_ */ /****************************** End of file **********************************/ CTMDM sys/contrib/vchiq/interface/vchi/message_drivers 1004 1004 755 CTMFM sys/contrib/vchiq/interface/vchi/message_drivers/message.h 1004 1004 644 dd86208f4daeb5a8d70121ea50cf1114 8864 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _VCHI_MESSAGE_H_ #define _VCHI_MESSAGE_H_ #include "interface/vchi/vchi_cfg_internal.h" #include "interface/vchi/vchi_common.h" typedef enum message_event_type { MESSAGE_EVENT_NONE, MESSAGE_EVENT_NOP, MESSAGE_EVENT_MESSAGE, MESSAGE_EVENT_SLOT_COMPLETE, MESSAGE_EVENT_RX_BULK_PAUSED, MESSAGE_EVENT_RX_BULK_COMPLETE, MESSAGE_EVENT_TX_COMPLETE, MESSAGE_EVENT_MSG_DISCARDED } MESSAGE_EVENT_TYPE_T; typedef enum vchi_msg_flags { VCHI_MSG_FLAGS_NONE = 0x0, VCHI_MSG_FLAGS_TERMINATE_DMA = 0x1 } VCHI_MSG_FLAGS_T; typedef enum message_tx_channel { MESSAGE_TX_CHANNEL_MESSAGE = 0, MESSAGE_TX_CHANNEL_BULK = 1 // drivers may provide multiple bulk channels, from 1 upwards } MESSAGE_TX_CHANNEL_T; // Macros used for cycling through bulk channels #define MESSAGE_TX_CHANNEL_BULK_PREV(c) (MESSAGE_TX_CHANNEL_BULK+((c)-MESSAGE_TX_CHANNEL_BULK+VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION-1)%VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION) #define MESSAGE_TX_CHANNEL_BULK_NEXT(c) (MESSAGE_TX_CHANNEL_BULK+((c)-MESSAGE_TX_CHANNEL_BULK+1)%VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION) typedef enum message_rx_channel { MESSAGE_RX_CHANNEL_MESSAGE = 0, MESSAGE_RX_CHANNEL_BULK = 1 // drivers may provide multiple bulk channels, from 1 upwards } MESSAGE_RX_CHANNEL_T; // Message receive slot information typedef struct rx_msg_slot_info { struct rx_msg_slot_info *next; //struct slot_info *prev; #if !defined VCHI_COARSE_LOCKING struct semaphore sem; #endif uint8_t *addr; // base address of slot uint32_t len; // length of slot in bytes uint32_t write_ptr; // hardware causes this to advance uint32_t read_ptr; // this module does the reading int active; // is this slot in the hardware dma fifo? uint32_t msgs_parsed; // count how many messages are in this slot uint32_t msgs_released; // how many messages have been released void *state; // connection state information uint8_t ref_count[VCHI_MAX_SERVICES_PER_CONNECTION]; // reference count for slots held by services } RX_MSG_SLOTINFO_T; // The message driver no longer needs to know about the fields of RX_BULK_SLOTINFO_T - sort this out. // In particular, it mustn't use addr and len - they're the client buffer, but the message // driver will be tasked with sending the aligned core section. typedef struct rx_bulk_slotinfo_t { struct rx_bulk_slotinfo_t *next; struct semaphore *blocking; // needed by DMA void *addr; uint32_t len; // needed for the callback void *service; void *handle; VCHI_FLAGS_T flags; } RX_BULK_SLOTINFO_T; /* ---------------------------------------------------------------------- * each connection driver will have a pool of the following struct. * * the pool will be managed by vchi_qman_* * this means there will be multiple queues (single linked lists) * a given struct message_info will be on exactly one of these queues * at any one time * -------------------------------------------------------------------- */ typedef struct rx_message_info { struct message_info *next; //struct message_info *prev; uint8_t *addr; uint32_t len; RX_MSG_SLOTINFO_T *slot; // points to whichever slot contains this message uint32_t tx_timestamp; uint32_t rx_timestamp; } RX_MESSAGE_INFO_T; typedef struct { MESSAGE_EVENT_TYPE_T type; struct { // for messages void *addr; // address of message uint16_t slot_delta; // whether this message indicated slot delta uint32_t len; // length of message RX_MSG_SLOTINFO_T *slot; // slot this message is in int32_t service; // service id this message is destined for uint32_t tx_timestamp; // timestamp from the header uint32_t rx_timestamp; // timestamp when we parsed it } message; // FIXME: cleanup slot reporting... RX_MSG_SLOTINFO_T *rx_msg; RX_BULK_SLOTINFO_T *rx_bulk; void *tx_handle; MESSAGE_TX_CHANNEL_T tx_channel; } MESSAGE_EVENT_T; // callbacks typedef void VCHI_MESSAGE_DRIVER_EVENT_CALLBACK_T( void *state ); typedef struct { VCHI_MESSAGE_DRIVER_EVENT_CALLBACK_T *event_callback; } VCHI_MESSAGE_DRIVER_OPEN_T; // handle to this instance of message driver (as returned by ->open) typedef struct opaque_mhandle_t *VCHI_MDRIVER_HANDLE_T; struct opaque_vchi_message_driver_t { VCHI_MDRIVER_HANDLE_T *(*open)( VCHI_MESSAGE_DRIVER_OPEN_T *params, void *state ); int32_t (*suspending)( VCHI_MDRIVER_HANDLE_T *handle ); int32_t (*resumed)( VCHI_MDRIVER_HANDLE_T *handle ); int32_t (*power_control)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T, int32_t enable ); int32_t (*add_msg_rx_slot)( VCHI_MDRIVER_HANDLE_T *handle, RX_MSG_SLOTINFO_T *slot ); // rx message int32_t (*add_bulk_rx)( VCHI_MDRIVER_HANDLE_T *handle, void *data, uint32_t len, RX_BULK_SLOTINFO_T *slot ); // rx data (bulk) int32_t (*send)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel, const void *data, uint32_t len, VCHI_MSG_FLAGS_T flags, void *send_handle ); // tx (message & bulk) void (*next_event)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_EVENT_T *event ); // get the next event from message_driver int32_t (*enable)( VCHI_MDRIVER_HANDLE_T *handle ); int32_t (*form_message)( VCHI_MDRIVER_HANDLE_T *handle, int32_t service_id, VCHI_MSG_VECTOR_T *vector, uint32_t count, void *address, uint32_t length_avail, uint32_t max_total_length, int32_t pad_to_fill, int32_t allow_partial ); int32_t (*update_message)( VCHI_MDRIVER_HANDLE_T *handle, void *dest, int16_t *slot_count ); int32_t (*buffer_aligned)( VCHI_MDRIVER_HANDLE_T *handle, int tx, int uncached, const void *address, const uint32_t length ); void * (*allocate_buffer)( VCHI_MDRIVER_HANDLE_T *handle, uint32_t *length ); void (*free_buffer)( VCHI_MDRIVER_HANDLE_T *handle, void *address ); int (*rx_slot_size)( VCHI_MDRIVER_HANDLE_T *handle, int msg_size ); int (*tx_slot_size)( VCHI_MDRIVER_HANDLE_T *handle, int msg_size ); int32_t (*tx_supports_terminate)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel ); uint32_t (*tx_bulk_chunk_size)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel ); int (*tx_alignment)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel ); int (*rx_alignment)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_RX_CHANNEL_T channel ); void (*form_bulk_aux)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel, const void *data, uint32_t len, uint32_t chunk_size, const void **aux_data, int32_t *aux_len ); void (*debug)( VCHI_MDRIVER_HANDLE_T *handle ); }; #endif // _VCHI_MESSAGE_H_ /****************************** End of file ***********************************/ CTMFM sys/contrib/vchiq/interface/vchi/vchi.h 1004 1004 644 55a58c5a7c49c1650b7a0d1a60cd3aa4 15687 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHI_H_ #define VCHI_H_ #include "interface/vchi/vchi_cfg.h" #include "interface/vchi/vchi_common.h" #include "interface/vchi/connections/connection.h" #include "vchi_mh.h" /****************************************************************************** Global defs *****************************************************************************/ #define VCHI_BULK_ROUND_UP(x) ((((unsigned long)(x))+VCHI_BULK_ALIGN-1) & ~(VCHI_BULK_ALIGN-1)) #define VCHI_BULK_ROUND_DOWN(x) (((unsigned long)(x)) & ~(VCHI_BULK_ALIGN-1)) #define VCHI_BULK_ALIGN_NBYTES(x) (VCHI_BULK_ALIGNED(x) ? 0 : (VCHI_BULK_ALIGN - ((unsigned long)(x) & (VCHI_BULK_ALIGN-1)))) #ifdef USE_VCHIQ_ARM #define VCHI_BULK_ALIGNED(x) 1 #else #define VCHI_BULK_ALIGNED(x) (((unsigned long)(x) & (VCHI_BULK_ALIGN-1)) == 0) #endif struct vchi_version { uint32_t version; uint32_t version_min; }; #define VCHI_VERSION(v_) { v_, v_ } #define VCHI_VERSION_EX(v_, m_) { v_, m_ } typedef enum { VCHI_VEC_POINTER, VCHI_VEC_HANDLE, VCHI_VEC_LIST } VCHI_MSG_VECTOR_TYPE_T; typedef struct vchi_msg_vector_ex { VCHI_MSG_VECTOR_TYPE_T type; union { // a memory handle struct { VCHI_MEM_HANDLE_T handle; uint32_t offset; int32_t vec_len; } handle; // an ordinary data pointer struct { const void *vec_base; int32_t vec_len; } ptr; // a nested vector list struct { struct vchi_msg_vector_ex *vec; uint32_t vec_len; } list; } u; } VCHI_MSG_VECTOR_EX_T; // Construct an entry in a msg vector for a pointer (p) of length (l) #define VCHI_VEC_POINTER(p,l) VCHI_VEC_POINTER, { { (VCHI_MEM_HANDLE_T)(p), (l) } } // Construct an entry in a msg vector for a message handle (h), starting at offset (o) of length (l) #define VCHI_VEC_HANDLE(h,o,l) VCHI_VEC_HANDLE, { { (h), (o), (l) } } // Macros to manipulate 'FOURCC' values #define MAKE_FOURCC(x) ((int32_t)( (x[0] << 24) | (x[1] << 16) | (x[2] << 8) | x[3] )) #define FOURCC_TO_CHAR(x) (x >> 24) & 0xFF,(x >> 16) & 0xFF,(x >> 8) & 0xFF, x & 0xFF // Opaque service information struct opaque_vchi_service_t; // Descriptor for a held message. Allocated by client, initialised by vchi_msg_hold, // vchi_msg_iter_hold or vchi_msg_iter_hold_next. Fields are for internal VCHI use only. typedef struct { struct opaque_vchi_service_t *service; void *message; } VCHI_HELD_MSG_T; // structure used to provide the information needed to open a server or a client typedef struct { struct vchi_version version; int32_t service_id; VCHI_CONNECTION_T *connection; uint32_t rx_fifo_size; uint32_t tx_fifo_size; VCHI_CALLBACK_T callback; void *callback_param; /* client intends to receive bulk transfers of odd lengths or into unaligned buffers */ int32_t want_unaligned_bulk_rx; /* client intends to transmit bulk transfers of odd lengths or out of unaligned buffers */ int32_t want_unaligned_bulk_tx; /* client wants to check CRCs on (bulk) xfers. Only needs to be set at 1 end - will do both directions. */ int32_t want_crc; } SERVICE_CREATION_T; // Opaque handle for a VCHI instance typedef struct opaque_vchi_instance_handle_t *VCHI_INSTANCE_T; // Opaque handle for a server or client typedef struct opaque_vchi_service_handle_t *VCHI_SERVICE_HANDLE_T; // Service registration & startup typedef void (*VCHI_SERVICE_INIT)(VCHI_INSTANCE_T initialise_instance, VCHI_CONNECTION_T **connections, uint32_t num_connections); typedef struct service_info_tag { const char * const vll_filename; /* VLL to load to start this service. This is an empty string if VLL is "static" */ VCHI_SERVICE_INIT init; /* Service initialisation function */ void *vll_handle; /* VLL handle; NULL when unloaded or a "static VLL" in build */ } SERVICE_INFO_T; /****************************************************************************** Global funcs - implementation is specific to which side you are on (local / remote) *****************************************************************************/ #ifdef __cplusplus extern "C" { #endif extern /*@observer@*/ VCHI_CONNECTION_T * vchi_create_connection( const VCHI_CONNECTION_API_T * function_table, const VCHI_MESSAGE_DRIVER_T * low_level); // Routine used to initialise the vchi on both local + remote connections extern int32_t vchi_initialise( VCHI_INSTANCE_T *instance_handle ); extern int32_t vchi_exit( void ); extern int32_t vchi_connect( VCHI_CONNECTION_T **connections, const uint32_t num_connections, VCHI_INSTANCE_T instance_handle ); //When this is called, ensure that all services have no data pending. //Bulk transfers can remain 'queued' extern int32_t vchi_disconnect( VCHI_INSTANCE_T instance_handle ); // Global control over bulk CRC checking extern int32_t vchi_crc_control( VCHI_CONNECTION_T *connection, VCHI_CRC_CONTROL_T control ); // helper functions extern void * vchi_allocate_buffer(VCHI_SERVICE_HANDLE_T handle, uint32_t *length); extern void vchi_free_buffer(VCHI_SERVICE_HANDLE_T handle, void *address); extern uint32_t vchi_current_time(VCHI_INSTANCE_T instance_handle); /****************************************************************************** Global service API *****************************************************************************/ // Routine to create a named service extern int32_t vchi_service_create( VCHI_INSTANCE_T instance_handle, SERVICE_CREATION_T *setup, VCHI_SERVICE_HANDLE_T *handle ); // Routine to destory a service extern int32_t vchi_service_destroy( const VCHI_SERVICE_HANDLE_T handle ); // Routine to open a named service extern int32_t vchi_service_open( VCHI_INSTANCE_T instance_handle, SERVICE_CREATION_T *setup, VCHI_SERVICE_HANDLE_T *handle); extern int32_t vchi_get_peer_version( const VCHI_SERVICE_HANDLE_T handle, short *peer_version ); // Routine to close a named service extern int32_t vchi_service_close( const VCHI_SERVICE_HANDLE_T handle ); // Routine to increment ref count on a named service extern int32_t vchi_service_use( const VCHI_SERVICE_HANDLE_T handle ); // Routine to decrement ref count on a named service extern int32_t vchi_service_release( const VCHI_SERVICE_HANDLE_T handle ); // Routine to send a message accross a service extern int32_t vchi_msg_queue( VCHI_SERVICE_HANDLE_T handle, const void *data, uint32_t data_size, VCHI_FLAGS_T flags, void *msg_handle ); // scatter-gather (vector) and send message int32_t vchi_msg_queuev_ex( VCHI_SERVICE_HANDLE_T handle, VCHI_MSG_VECTOR_EX_T *vector, uint32_t count, VCHI_FLAGS_T flags, void *msg_handle ); // legacy scatter-gather (vector) and send message, only handles pointers int32_t vchi_msg_queuev( VCHI_SERVICE_HANDLE_T handle, VCHI_MSG_VECTOR_T *vector, uint32_t count, VCHI_FLAGS_T flags, void *msg_handle ); // Routine to receive a msg from a service // Dequeue is equivalent to hold, copy into client buffer, release extern int32_t vchi_msg_dequeue( VCHI_SERVICE_HANDLE_T handle, void *data, uint32_t max_data_size_to_read, uint32_t *actual_msg_size, VCHI_FLAGS_T flags ); // Routine to look at a message in place. // The message is not dequeued, so a subsequent call to peek or dequeue // will return the same message. extern int32_t vchi_msg_peek( VCHI_SERVICE_HANDLE_T handle, void **data, uint32_t *msg_size, VCHI_FLAGS_T flags ); // Routine to remove a message after it has been read in place with peek // The first message on the queue is dequeued. extern int32_t vchi_msg_remove( VCHI_SERVICE_HANDLE_T handle ); // Routine to look at a message in place. // The message is dequeued, so the caller is left holding it; the descriptor is // filled in and must be released when the user has finished with the message. extern int32_t vchi_msg_hold( VCHI_SERVICE_HANDLE_T handle, void **data, // } may be NULL, as info can be uint32_t *msg_size, // } obtained from HELD_MSG_T VCHI_FLAGS_T flags, VCHI_HELD_MSG_T *message_descriptor ); // Initialise an iterator to look through messages in place extern int32_t vchi_msg_look_ahead( VCHI_SERVICE_HANDLE_T handle, VCHI_MSG_ITER_T *iter, VCHI_FLAGS_T flags ); /****************************************************************************** Global service support API - operations on held messages and message iterators *****************************************************************************/ // Routine to get the address of a held message extern void *vchi_held_msg_ptr( const VCHI_HELD_MSG_T *message ); // Routine to get the size of a held message extern int32_t vchi_held_msg_size( const VCHI_HELD_MSG_T *message ); // Routine to get the transmit timestamp as written into the header by the peer extern uint32_t vchi_held_msg_tx_timestamp( const VCHI_HELD_MSG_T *message ); // Routine to get the reception timestamp, written as we parsed the header extern uint32_t vchi_held_msg_rx_timestamp( const VCHI_HELD_MSG_T *message ); // Routine to release a held message after it has been processed extern int32_t vchi_held_msg_release( VCHI_HELD_MSG_T *message ); // Indicates whether the iterator has a next message. extern int32_t vchi_msg_iter_has_next( const VCHI_MSG_ITER_T *iter ); // Return the pointer and length for the next message and advance the iterator. extern int32_t vchi_msg_iter_next( VCHI_MSG_ITER_T *iter, void **data, uint32_t *msg_size ); // Remove the last message returned by vchi_msg_iter_next. // Can only be called once after each call to vchi_msg_iter_next. extern int32_t vchi_msg_iter_remove( VCHI_MSG_ITER_T *iter ); // Hold the last message returned by vchi_msg_iter_next. // Can only be called once after each call to vchi_msg_iter_next. extern int32_t vchi_msg_iter_hold( VCHI_MSG_ITER_T *iter, VCHI_HELD_MSG_T *message ); // Return information for the next message, and hold it, advancing the iterator. extern int32_t vchi_msg_iter_hold_next( VCHI_MSG_ITER_T *iter, void **data, // } may be NULL uint32_t *msg_size, // } VCHI_HELD_MSG_T *message ); /****************************************************************************** Global bulk API *****************************************************************************/ // Routine to prepare interface for a transfer from the other side extern int32_t vchi_bulk_queue_receive( VCHI_SERVICE_HANDLE_T handle, void *data_dst, uint32_t data_size, VCHI_FLAGS_T flags, void *transfer_handle ); // Prepare interface for a transfer from the other side into relocatable memory. int32_t vchi_bulk_queue_receive_reloc( const VCHI_SERVICE_HANDLE_T handle, VCHI_MEM_HANDLE_T h_dst, uint32_t offset, uint32_t data_size, const VCHI_FLAGS_T flags, void * const bulk_handle ); // Routine to queue up data ready for transfer to the other (once they have signalled they are ready) extern int32_t vchi_bulk_queue_transmit( VCHI_SERVICE_HANDLE_T handle, void *data_src, uint32_t data_size, VCHI_FLAGS_T flags, void *transfer_handle ); /****************************************************************************** Configuration plumbing *****************************************************************************/ // function prototypes for the different mid layers (the state info gives the different physical connections) extern const VCHI_CONNECTION_API_T *single_get_func_table( void ); //extern const VCHI_CONNECTION_API_T *local_server_get_func_table( void ); //extern const VCHI_CONNECTION_API_T *local_client_get_func_table( void ); // declare all message drivers here const VCHI_MESSAGE_DRIVER_T *vchi_mphi_message_driver_func_table( void ); #ifdef __cplusplus } #endif extern int32_t vchi_bulk_queue_transmit_reloc( VCHI_SERVICE_HANDLE_T handle, VCHI_MEM_HANDLE_T h_src, uint32_t offset, uint32_t data_size, VCHI_FLAGS_T flags, void *transfer_handle ); #endif /* VCHI_H_ */ /****************************** End of file **********************************/ CTMFM sys/contrib/vchiq/interface/vchi/vchi_cfg.h 1004 1004 644 7a72ca2eb0fbc62a52f95d300e0188d6 9375 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHI_CFG_H_ #define VCHI_CFG_H_ /**************************************************************************************** * Defines in this first section are part of the VCHI API and may be examined by VCHI * services. ***************************************************************************************/ /* Required alignment of base addresses for bulk transfer, if unaligned transfers are not enabled */ /* Really determined by the message driver, and should be available from a run-time call. */ #ifndef VCHI_BULK_ALIGN # if __VCCOREVER__ >= 0x04000000 # define VCHI_BULK_ALIGN 32 // Allows for the need to do cache cleans # else # define VCHI_BULK_ALIGN 16 # endif #endif /* Required length multiple for bulk transfers, if unaligned transfers are not enabled */ /* May be less than or greater than VCHI_BULK_ALIGN */ /* Really determined by the message driver, and should be available from a run-time call. */ #ifndef VCHI_BULK_GRANULARITY # if __VCCOREVER__ >= 0x04000000 # define VCHI_BULK_GRANULARITY 32 // Allows for the need to do cache cleans # else # define VCHI_BULK_GRANULARITY 16 # endif #endif /* The largest possible message to be queued with vchi_msg_queue. */ #ifndef VCHI_MAX_MSG_SIZE # if defined VCHI_LOCAL_HOST_PORT # define VCHI_MAX_MSG_SIZE 16384 // makes file transfers fast, but should they be using bulk? # else # define VCHI_MAX_MSG_SIZE 4096 // NOTE: THIS MUST BE LARGER THAN OR EQUAL TO THE SIZE OF THE KHRONOS MERGE BUFFER!! # endif #endif /****************************************************************************************** * Defines below are system configuration options, and should not be used by VCHI services. *****************************************************************************************/ /* How many connections can we support? A localhost implementation uses 2 connections, * 1 for host-app, 1 for VMCS, and these are hooked together by a loopback MPHI VCFW * driver. */ #ifndef VCHI_MAX_NUM_CONNECTIONS # define VCHI_MAX_NUM_CONNECTIONS 3 #endif /* How many services can we open per connection? Extending this doesn't cost processing time, just a small * amount of static memory. */ #ifndef VCHI_MAX_SERVICES_PER_CONNECTION # define VCHI_MAX_SERVICES_PER_CONNECTION 36 #endif /* Adjust if using a message driver that supports more logical TX channels */ #ifndef VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION # define VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION 9 // 1 MPHI + 8 CCP2 logical channels #endif /* Adjust if using a message driver that supports more logical RX channels */ #ifndef VCHI_MAX_BULK_RX_CHANNELS_PER_CONNECTION # define VCHI_MAX_BULK_RX_CHANNELS_PER_CONNECTION 1 // 1 MPHI #endif /* How many receive slots do we use. This times VCHI_MAX_MSG_SIZE gives the effective * receive queue space, less message headers. */ #ifndef VCHI_NUM_READ_SLOTS # if defined(VCHI_LOCAL_HOST_PORT) # define VCHI_NUM_READ_SLOTS 4 # else # define VCHI_NUM_READ_SLOTS 48 # endif #endif /* Do we utilise overrun facility for receive message slots? Can aid peer transmit * performance. Only define on VideoCore end, talking to host. */ //#define VCHI_MSG_RX_OVERRUN /* How many transmit slots do we use. Generally don't need many, as the hardware driver * underneath VCHI will usually have its own buffering. */ #ifndef VCHI_NUM_WRITE_SLOTS # define VCHI_NUM_WRITE_SLOTS 4 #endif /* If a service has held or queued received messages in VCHI_XOFF_THRESHOLD or more slots, * then it's taking up too much buffer space, and the peer service will be told to stop * transmitting with an XOFF message. For this to be effective, the VCHI_NUM_READ_SLOTS * needs to be considerably bigger than VCHI_NUM_WRITE_SLOTS, or the transmit latency * is too high. */ #ifndef VCHI_XOFF_THRESHOLD # define VCHI_XOFF_THRESHOLD (VCHI_NUM_READ_SLOTS / 2) #endif /* After we've sent an XOFF, the peer will be told to resume transmission once the local * service has dequeued/released enough messages that it's now occupying * VCHI_XON_THRESHOLD slots or fewer. */ #ifndef VCHI_XON_THRESHOLD # define VCHI_XON_THRESHOLD (VCHI_NUM_READ_SLOTS / 4) #endif /* A size below which a bulk transfer omits the handshake completely and always goes * via the message channel, if bulk auxiliary is being sent on that service. (The user * can guarantee this by enabling unaligned transmits). * Not API. */ #ifndef VCHI_MIN_BULK_SIZE # define VCHI_MIN_BULK_SIZE ( VCHI_MAX_MSG_SIZE / 2 < 4096 ? VCHI_MAX_MSG_SIZE / 2 : 4096 ) #endif /* Maximum size of bulk transmission chunks, for each interface type. A trade-off between * speed and latency; the smaller the chunk size the better change of messages and other * bulk transmissions getting in when big bulk transfers are happening. Set to 0 to not * break transmissions into chunks. */ #ifndef VCHI_MAX_BULK_CHUNK_SIZE_MPHI # define VCHI_MAX_BULK_CHUNK_SIZE_MPHI (16 * 1024) #endif /* NB Chunked CCP2 transmissions violate the letter of the CCP2 spec by using "JPEG8" mode * with multiple-line frames. Only use if the receiver can cope. */ #ifndef VCHI_MAX_BULK_CHUNK_SIZE_CCP2 # define VCHI_MAX_BULK_CHUNK_SIZE_CCP2 0 #endif /* How many TX messages can we have pending in our transmit slots. Once exhausted, * vchi_msg_queue will be blocked. */ #ifndef VCHI_TX_MSG_QUEUE_SIZE # define VCHI_TX_MSG_QUEUE_SIZE 256 #endif /* How many RX messages can we have parsed in the receive slots. Once exhausted, parsing * will be suspended until older messages are dequeued/released. */ #ifndef VCHI_RX_MSG_QUEUE_SIZE # define VCHI_RX_MSG_QUEUE_SIZE 256 #endif /* Really should be able to cope if we run out of received message descriptors, by * suspending parsing as the comment above says, but we don't. This sweeps the issue * under the carpet. */ #if VCHI_RX_MSG_QUEUE_SIZE < (VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS # undef VCHI_RX_MSG_QUEUE_SIZE # define VCHI_RX_MSG_QUEUE_SIZE (VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS #endif /* How many bulk transmits can we have pending. Once exhausted, vchi_bulk_queue_transmit * will be blocked. */ #ifndef VCHI_TX_BULK_QUEUE_SIZE # define VCHI_TX_BULK_QUEUE_SIZE 64 #endif /* How many bulk receives can we have pending. Once exhausted, vchi_bulk_queue_receive * will be blocked. */ #ifndef VCHI_RX_BULK_QUEUE_SIZE # define VCHI_RX_BULK_QUEUE_SIZE 64 #endif /* A limit on how many outstanding bulk requests we expect the peer to give us. If * the peer asks for more than this, VCHI will fail and assert. The number is determined * by the peer's hardware - it's the number of outstanding requests that can be queued * on all bulk channels. VC3's MPHI peripheral allows 16. */ #ifndef VCHI_MAX_PEER_BULK_REQUESTS # define VCHI_MAX_PEER_BULK_REQUESTS 32 #endif /* Define VCHI_CCP2TX_MANUAL_POWER if the host tells us when to turn the CCP2 * transmitter on and off. */ /*#define VCHI_CCP2TX_MANUAL_POWER*/ #ifndef VCHI_CCP2TX_MANUAL_POWER /* Timeout (in milliseconds) for putting the CCP2TX interface into IDLE state. Set * negative for no IDLE. */ # ifndef VCHI_CCP2TX_IDLE_TIMEOUT # define VCHI_CCP2TX_IDLE_TIMEOUT 5 # endif /* Timeout (in milliseconds) for putting the CCP2TX interface into OFF state. Set * negative for no OFF. */ # ifndef VCHI_CCP2TX_OFF_TIMEOUT # define VCHI_CCP2TX_OFF_TIMEOUT 1000 # endif #endif /* VCHI_CCP2TX_MANUAL_POWER */ #endif /* VCHI_CFG_H_ */ /****************************** End of file **********************************/ CTMFM sys/contrib/vchiq/interface/vchi/vchi_cfg_internal.h 1004 1004 644 1db27fdd028819a2bab13a710720b36c 3188 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHI_CFG_INTERNAL_H_ #define VCHI_CFG_INTERNAL_H_ /**************************************************************************************** * Control optimisation attempts. ***************************************************************************************/ // Don't use lots of short-term locks - use great long ones, reducing the overall locks-per-second #define VCHI_COARSE_LOCKING // Avoid lock then unlock on exit from blocking queue operations (msg tx, bulk rx/tx) // (only relevant if VCHI_COARSE_LOCKING) #define VCHI_ELIDE_BLOCK_EXIT_LOCK // Avoid lock on non-blocking peek // (only relevant if VCHI_COARSE_LOCKING) #define VCHI_AVOID_PEEK_LOCK // Use one slot-handler thread per connection, rather than 1 thread dealing with all connections in rotation. #define VCHI_MULTIPLE_HANDLER_THREADS // Put free descriptors onto the head of the free queue, rather than the tail, so that we don't thrash // our way through the pool of descriptors. #define VCHI_PUSH_FREE_DESCRIPTORS_ONTO_HEAD // Don't issue a MSG_AVAILABLE callback for every single message. Possibly only safe if VCHI_COARSE_LOCKING. #define VCHI_FEWER_MSG_AVAILABLE_CALLBACKS // Don't use message descriptors for TX messages that don't need them #define VCHI_MINIMISE_TX_MSG_DESCRIPTORS // Nano-locks for multiqueue //#define VCHI_MQUEUE_NANOLOCKS // Lock-free(er) dequeuing //#define VCHI_RX_NANOLOCKS #endif /*VCHI_CFG_INTERNAL_H_*/ CTMFM sys/contrib/vchiq/interface/vchi/vchi_common.h 1004 1004 644 ff548f1b19aeba0d0d1c22c492d229d2 6532 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHI_COMMON_H_ #define VCHI_COMMON_H_ //flags used when sending messages (must be bitmapped) typedef enum { VCHI_FLAGS_NONE = 0x0, VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE = 0x1, // waits for message to be received, or sent (NB. not the same as being seen on other side) VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE = 0x2, // run a callback when message sent VCHI_FLAGS_BLOCK_UNTIL_QUEUED = 0x4, // return once the transfer is in a queue ready to go VCHI_FLAGS_ALLOW_PARTIAL = 0x8, VCHI_FLAGS_BLOCK_UNTIL_DATA_READ = 0x10, VCHI_FLAGS_CALLBACK_WHEN_DATA_READ = 0x20, VCHI_FLAGS_ALIGN_SLOT = 0x000080, // internal use only VCHI_FLAGS_BULK_AUX_QUEUED = 0x010000, // internal use only VCHI_FLAGS_BULK_AUX_COMPLETE = 0x020000, // internal use only VCHI_FLAGS_BULK_DATA_QUEUED = 0x040000, // internal use only VCHI_FLAGS_BULK_DATA_COMPLETE = 0x080000, // internal use only VCHI_FLAGS_INTERNAL = 0xFF0000 } VCHI_FLAGS_T; // constants for vchi_crc_control() typedef enum { VCHI_CRC_NOTHING = -1, VCHI_CRC_PER_SERVICE = 0, VCHI_CRC_EVERYTHING = 1, } VCHI_CRC_CONTROL_T; //callback reasons when an event occurs on a service typedef enum { VCHI_CALLBACK_REASON_MIN, //This indicates that there is data available //handle is the msg id that was transmitted with the data // When a message is received and there was no FULL message available previously, send callback // Tasks get kicked by the callback, reset their event and try and read from the fifo until it fails VCHI_CALLBACK_MSG_AVAILABLE, VCHI_CALLBACK_MSG_SENT, VCHI_CALLBACK_MSG_SPACE_AVAILABLE, // XXX not yet implemented // This indicates that a transfer from the other side has completed VCHI_CALLBACK_BULK_RECEIVED, //This indicates that data queued up to be sent has now gone //handle is the msg id that was used when sending the data VCHI_CALLBACK_BULK_SENT, VCHI_CALLBACK_BULK_RX_SPACE_AVAILABLE, // XXX not yet implemented VCHI_CALLBACK_BULK_TX_SPACE_AVAILABLE, // XXX not yet implemented VCHI_CALLBACK_SERVICE_CLOSED, // this side has sent XOFF to peer due to lack of data consumption by service // (suggests the service may need to take some recovery action if it has // been deliberately holding off consuming data) VCHI_CALLBACK_SENT_XOFF, VCHI_CALLBACK_SENT_XON, // indicates that a bulk transfer has finished reading the source buffer VCHI_CALLBACK_BULK_DATA_READ, // power notification events (currently host side only) VCHI_CALLBACK_PEER_OFF, VCHI_CALLBACK_PEER_SUSPENDED, VCHI_CALLBACK_PEER_ON, VCHI_CALLBACK_PEER_RESUMED, VCHI_CALLBACK_FORCED_POWER_OFF, #ifdef USE_VCHIQ_ARM // some extra notifications provided by vchiq_arm VCHI_CALLBACK_SERVICE_OPENED, VCHI_CALLBACK_BULK_RECEIVE_ABORTED, VCHI_CALLBACK_BULK_TRANSMIT_ABORTED, #endif VCHI_CALLBACK_REASON_MAX } VCHI_CALLBACK_REASON_T; //Calback used by all services / bulk transfers typedef void (*VCHI_CALLBACK_T)( void *callback_param, //my service local param VCHI_CALLBACK_REASON_T reason, void *handle ); //for transmitting msg's only /* * Define vector struct for scatter-gather (vector) operations * Vectors can be nested - if a vector element has negative length, then * the data pointer is treated as pointing to another vector array, with * '-vec_len' elements. Thus to append a header onto an existing vector, * you can do this: * * void foo(const VCHI_MSG_VECTOR_T *v, int n) * { * VCHI_MSG_VECTOR_T nv[2]; * nv[0].vec_base = my_header; * nv[0].vec_len = sizeof my_header; * nv[1].vec_base = v; * nv[1].vec_len = -n; * ... * */ typedef struct vchi_msg_vector { const void *vec_base; int32_t vec_len; } VCHI_MSG_VECTOR_T; // Opaque type for a connection API typedef struct opaque_vchi_connection_api_t VCHI_CONNECTION_API_T; // Opaque type for a message driver typedef struct opaque_vchi_message_driver_t VCHI_MESSAGE_DRIVER_T; // Iterator structure for reading ahead through received message queue. Allocated by client, // initialised by vchi_msg_look_ahead. Fields are for internal VCHI use only. // Iterates over messages in queue at the instant of the call to vchi_msg_lookahead - // will not proceed to messages received since. Behaviour is undefined if an iterator // is used again after messages for that service are removed/dequeued by any // means other than vchi_msg_iter_... calls on the iterator itself. typedef struct { struct opaque_vchi_service_t *service; void *last; void *next; void *remove; } VCHI_MSG_ITER_T; #endif // VCHI_COMMON_H_ CTMFM sys/contrib/vchiq/interface/vchi/vchi_mh.h 1004 1004 644 d05480c6f186a8bf423aeb54ef54243b 1898 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHI_MH_H_ #define VCHI_MH_H_ #include typedef int32_t VCHI_MEM_HANDLE_T; #define VCHI_MEM_HANDLE_INVALID 0 #endif CTMDM sys/contrib/vchiq/interface/vchiq_arm 1004 1004 755 CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq.h 1004 1004 644 93e75775d5bbe437404d637c3661b529 1858 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_VCHIQ_H #define VCHIQ_VCHIQ_H #include "vchiq_if.h" #include "vchiq_util.h" #endif CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_2835.h 1004 1004 644 132b984efbfe378d3ca229f76d838c8a 1949 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_2835_H #define VCHIQ_2835_H #include "vchiq_pagelist.h" #define VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX 0 #define VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX 1 #endif /* VCHIQ_2835_H */ CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_2835_arm.c 1004 1004 644 400271ece29c1cb3494e32f97786abc6 15639 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include MALLOC_DEFINE(M_VCPAGELIST, "vcpagelist", "VideoCore pagelist memory"); #define TOTAL_SLOTS (VCHIQ_SLOT_ZERO_SLOTS + 2 * 32) #define VCHIQ_DOORBELL_IRQ IRQ_ARM_DOORBELL_0 #define VCHIQ_ARM_ADDRESS(x) ((void *)PHYS_TO_VCBUS(pmap_kextract((vm_offset_t)(x)))) #include "vchiq_arm.h" #include "vchiq_2835.h" #include "vchiq_connected.h" #define MAX_FRAGMENTS (VCHIQ_NUM_CURRENT_BULKS * 2) typedef struct vchiq_2835_state_struct { int inited; VCHIQ_ARM_STATE_T arm_state; } VCHIQ_2835_ARM_STATE_T; static char *g_slot_mem; static int g_slot_mem_size; vm_paddr_t g_slot_phys; /* BSD DMA */ bus_dma_tag_t bcm_slots_dma_tag; bus_dmamap_t bcm_slots_dma_map; static FRAGMENTS_T *g_fragments_base; static FRAGMENTS_T *g_free_fragments; struct semaphore g_free_fragments_sema; static DEFINE_SEMAPHORE(g_free_fragments_mutex); typedef struct bulkinfo_struct { PAGELIST_T *pagelist; bus_dma_tag_t pagelist_dma_tag; bus_dmamap_t pagelist_dma_map; void *buf; size_t size; } BULKINFO_T; static int create_pagelist(char __user *buf, size_t count, unsigned short type, struct proc *p, BULKINFO_T *bi); static void free_pagelist(BULKINFO_T *bi, int actual); static void vchiq_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err) { bus_addr_t *addr; if (err) return; addr = (bus_addr_t*)arg; *addr = PHYS_TO_VCBUS(segs[0].ds_addr); } int __init vchiq_platform_init(VCHIQ_STATE_T *state) { VCHIQ_SLOT_ZERO_T *vchiq_slot_zero; int frag_mem_size; int err; int i; /* Allocate space for the channels in coherent memory */ g_slot_mem_size = PAGE_ALIGN(TOTAL_SLOTS * VCHIQ_SLOT_SIZE); frag_mem_size = PAGE_ALIGN(sizeof(FRAGMENTS_T) * MAX_FRAGMENTS); err = bus_dma_tag_create( NULL, PAGE_SIZE, 0, /* alignment, boundary */ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ g_slot_mem_size + frag_mem_size, 1, /* maxsize, nsegments */ g_slot_mem_size + frag_mem_size, 0, /* maxsegsize, flags */ NULL, NULL, /* lockfunc, lockarg */ &bcm_slots_dma_tag); err = bus_dmamem_alloc(bcm_slots_dma_tag, (void **)&g_slot_mem, BUS_DMA_COHERENT | BUS_DMA_WAITOK, &bcm_slots_dma_map); if (err) { vchiq_log_error(vchiq_core_log_level, "Unable to allocate channel memory"); err = -ENOMEM; goto failed_alloc; } err = bus_dmamap_load(bcm_slots_dma_tag, bcm_slots_dma_map, g_slot_mem, g_slot_mem_size + frag_mem_size, vchiq_dmamap_cb, &g_slot_phys, 0); if (err) { vchiq_log_error(vchiq_core_log_level, "cannot load DMA map"); err = -ENOMEM; goto failed_load; } WARN_ON(((int)g_slot_mem & (PAGE_SIZE - 1)) != 0); vchiq_slot_zero = vchiq_init_slots(g_slot_mem, g_slot_mem_size); if (!vchiq_slot_zero) { err = -EINVAL; goto failed_init_slots; } vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX] = (int)g_slot_phys + g_slot_mem_size; vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX] = MAX_FRAGMENTS; g_fragments_base = (FRAGMENTS_T *)(g_slot_mem + g_slot_mem_size); g_slot_mem_size += frag_mem_size; g_free_fragments = g_fragments_base; for (i = 0; i < (MAX_FRAGMENTS - 1); i++) { *(FRAGMENTS_T **)&g_fragments_base[i] = &g_fragments_base[i + 1]; } *(FRAGMENTS_T **)&g_fragments_base[i] = NULL; _sema_init(&g_free_fragments_sema, MAX_FRAGMENTS); if (vchiq_init_state(state, vchiq_slot_zero, 0/*slave*/) != VCHIQ_SUCCESS) { err = -EINVAL; goto failed_vchiq_init; } bcm_mbox_write(BCM2835_MBOX_CHAN_VCHIQ, (unsigned int)g_slot_phys); vchiq_log_info(vchiq_arm_log_level, "vchiq_init - done (slots %x, phys %x)", (unsigned int)vchiq_slot_zero, g_slot_phys); vchiq_call_connected_callbacks(); return 0; failed_vchiq_init: failed_init_slots: failed_load: bus_dmamap_unload(bcm_slots_dma_tag, bcm_slots_dma_map); failed_alloc: bus_dmamap_destroy(bcm_slots_dma_tag, bcm_slots_dma_map); bus_dma_tag_destroy(bcm_slots_dma_tag); return err; } void __exit vchiq_platform_exit(VCHIQ_STATE_T *state) { bus_dmamap_unload(bcm_slots_dma_tag, bcm_slots_dma_map); bus_dmamap_destroy(bcm_slots_dma_tag, bcm_slots_dma_map); bus_dma_tag_destroy(bcm_slots_dma_tag); } VCHIQ_STATUS_T vchiq_platform_init_state(VCHIQ_STATE_T *state) { VCHIQ_STATUS_T status = VCHIQ_SUCCESS; state->platform_state = kzalloc(sizeof(VCHIQ_2835_ARM_STATE_T), GFP_KERNEL); ((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited = 1; status = vchiq_arm_init_state(state, &((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->arm_state); if(status != VCHIQ_SUCCESS) { ((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited = 0; } return status; } VCHIQ_ARM_STATE_T* vchiq_platform_get_arm_state(VCHIQ_STATE_T *state) { if(!((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited) { BUG(); } return &((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->arm_state; } int vchiq_copy_from_user(void *dst, const void *src, int size) { if (((vm_offset_t)(src)) < VM_MIN_KERNEL_ADDRESS) { int error = copyin(src, dst, size); return error ? VCHIQ_ERROR : VCHIQ_SUCCESS; } else bcopy(src, dst, size); return 0; } VCHIQ_STATUS_T vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, VCHI_MEM_HANDLE_T memhandle, void *offset, int size, int dir) { PAGELIST_T *pagelist; BULKINFO_T *bi; int ret; WARN_ON(memhandle != VCHI_MEM_HANDLE_INVALID); bi = malloc(sizeof(*bi), M_VCPAGELIST, M_WAITOK | M_ZERO); if (bi == NULL) return VCHIQ_ERROR; ret = create_pagelist((char __user *)offset, size, (dir == VCHIQ_BULK_RECEIVE) ? PAGELIST_READ : PAGELIST_WRITE, current, bi); if (ret != 0) return VCHIQ_ERROR; bulk->handle = memhandle; bulk->data = VCHIQ_ARM_ADDRESS(bi->pagelist); /* Store the pagelist address in remote_data, which isn't used by the slave. */ bulk->remote_data = bi; return VCHIQ_SUCCESS; } void vchiq_complete_bulk(VCHIQ_BULK_T *bulk) { if (bulk && bulk->remote_data && bulk->actual) free_pagelist((BULKINFO_T *)bulk->remote_data, bulk->actual); } void vchiq_transfer_bulk(VCHIQ_BULK_T *bulk) { /* * This should only be called on the master (VideoCore) side, but * provide an implementation to avoid the need for ifdefery. */ BUG(); } void vchiq_dump_platform_state(void *dump_context) { char buf[80]; int len; len = snprintf(buf, sizeof(buf), " Platform: 2835 (VC master)"); vchiq_dump(dump_context, buf, len + 1); } VCHIQ_STATUS_T vchiq_platform_suspend(VCHIQ_STATE_T *state) { return VCHIQ_ERROR; } VCHIQ_STATUS_T vchiq_platform_resume(VCHIQ_STATE_T *state) { return VCHIQ_SUCCESS; } void vchiq_platform_paused(VCHIQ_STATE_T *state) { } void vchiq_platform_resumed(VCHIQ_STATE_T *state) { } int vchiq_platform_videocore_wanted(VCHIQ_STATE_T* state) { return 1; // autosuspend not supported - videocore always wanted } int vchiq_platform_use_suspend_timer(void) { return 0; } void vchiq_dump_platform_use_state(VCHIQ_STATE_T *state) { vchiq_log_info(vchiq_arm_log_level, "Suspend timer not in use"); } void vchiq_platform_handle_timeout(VCHIQ_STATE_T *state) { (void)state; } /* * Local functions */ /* There is a potential problem with partial cache lines (pages?) ** at the ends of the block when reading. If the CPU accessed anything in ** the same line (page?) then it may have pulled old data into the cache, ** obscuring the new data underneath. We can solve this by transferring the ** partial cache lines separately, and allowing the ARM to copy into the ** cached area. ** N.B. This implementation plays slightly fast and loose with the Linux ** driver programming rules, e.g. its use of __virt_to_bus instead of ** dma_map_single, but it isn't a multi-platform driver and it benefits ** from increased speed as a result. */ static int create_pagelist(char __user *buf, size_t count, unsigned short type, struct proc *p, BULKINFO_T *bi) { PAGELIST_T *pagelist; vm_page_t* pages; unsigned long *addrs; unsigned int num_pages, i; vm_offset_t offset; int pagelist_size; char *addr, *base_addr, *next_addr; int run, addridx, actual_pages; int err; vm_paddr_t pagelist_phys; offset = (vm_offset_t)buf & (PAGE_SIZE - 1); num_pages = (count + offset + PAGE_SIZE - 1) / PAGE_SIZE; bi->pagelist = NULL; bi->buf = buf; bi->size = count; /* Allocate enough storage to hold the page pointers and the page ** list */ pagelist_size = sizeof(PAGELIST_T) + (num_pages * sizeof(unsigned long)) + (num_pages * sizeof(pages[0])); err = bus_dma_tag_create( NULL, PAGE_SIZE, 0, /* alignment, boundary */ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ pagelist_size, 1, /* maxsize, nsegments */ pagelist_size, 0, /* maxsegsize, flags */ NULL, NULL, /* lockfunc, lockarg */ &bi->pagelist_dma_tag); err = bus_dmamem_alloc(bi->pagelist_dma_tag, (void **)&pagelist, BUS_DMA_COHERENT | BUS_DMA_WAITOK, &bi->pagelist_dma_map); if (err) { vchiq_log_error(vchiq_core_log_level, "Unable to allocate pagelist memory"); err = -ENOMEM; goto failed_alloc; } err = bus_dmamap_load(bi->pagelist_dma_tag, bi->pagelist_dma_map, pagelist, pagelist_size, vchiq_dmamap_cb, &pagelist_phys, 0); if (err) { vchiq_log_error(vchiq_core_log_level, "cannot load DMA map for pagelist memory"); err = -ENOMEM; goto failed_load; } vchiq_log_trace(vchiq_arm_log_level, "create_pagelist - %x", (unsigned int)pagelist); if (!pagelist) return -ENOMEM; addrs = pagelist->addrs; pages = (vm_page_t*)(addrs + num_pages); actual_pages = vm_fault_quick_hold_pages(&p->p_vmspace->vm_map, (vm_offset_t)buf, count, (type == PAGELIST_READ ? VM_PROT_WRITE : 0 ) | VM_PROT_READ, pages, num_pages); if (actual_pages != num_pages) { vm_page_unhold_pages(pages, actual_pages); free(pagelist, M_VCPAGELIST); return (-ENOMEM); } pagelist->length = count; pagelist->type = type; pagelist->offset = offset; /* Group the pages into runs of contiguous pages */ base_addr = (void *)PHYS_TO_VCBUS(VM_PAGE_TO_PHYS(pages[0])); next_addr = base_addr + PAGE_SIZE; addridx = 0; run = 0; for (i = 1; i < num_pages; i++) { addr = (void *)PHYS_TO_VCBUS(VM_PAGE_TO_PHYS(pages[i])); if ((addr == next_addr) && (run < (PAGE_SIZE - 1))) { next_addr += PAGE_SIZE; run++; } else { addrs[addridx] = (unsigned long)base_addr + run; addridx++; base_addr = addr; next_addr = addr + PAGE_SIZE; run = 0; } } addrs[addridx] = (unsigned long)base_addr + run; addridx++; /* Partial cache lines (fragments) require special measures */ if ((type == PAGELIST_READ) && ((pagelist->offset & (CACHE_LINE_SIZE - 1)) || ((pagelist->offset + pagelist->length) & (CACHE_LINE_SIZE - 1)))) { FRAGMENTS_T *fragments; if (down_interruptible(&g_free_fragments_sema) != 0) { free(pagelist, M_VCPAGELIST); return -EINTR; } WARN_ON(g_free_fragments == NULL); down(&g_free_fragments_mutex); fragments = (FRAGMENTS_T *) g_free_fragments; WARN_ON(fragments == NULL); g_free_fragments = *(FRAGMENTS_T **) g_free_fragments; up(&g_free_fragments_mutex); pagelist->type = PAGELIST_READ_WITH_FRAGMENTS + (fragments - g_fragments_base); } /* XXX: optimize? INV operation for read WBINV for write? */ cpu_dcache_wbinv_range((vm_offset_t)buf, count); bi->pagelist = pagelist; return 0; failed_load: bus_dmamap_unload(bi->pagelist_dma_tag, bi->pagelist_dma_map); failed_alloc: bus_dmamap_destroy(bi->pagelist_dma_tag, bi->pagelist_dma_map); bus_dma_tag_destroy(bi->pagelist_dma_tag); return err; } static void free_pagelist(BULKINFO_T *bi, int actual) { vm_page_t*pages; unsigned int num_pages, i; void *page_address; PAGELIST_T *pagelist; pagelist = bi->pagelist; vchiq_log_trace(vchiq_arm_log_level, "free_pagelist - %x, %d", (unsigned int)pagelist, actual); num_pages = (pagelist->length + pagelist->offset + PAGE_SIZE - 1) / PAGE_SIZE; pages = (vm_page_t*)(pagelist->addrs + num_pages); /* Deal with any partial cache lines (fragments) */ if (pagelist->type >= PAGELIST_READ_WITH_FRAGMENTS) { FRAGMENTS_T *fragments = g_fragments_base + (pagelist->type - PAGELIST_READ_WITH_FRAGMENTS); int head_bytes, tail_bytes; head_bytes = (CACHE_LINE_SIZE - pagelist->offset) & (CACHE_LINE_SIZE - 1); tail_bytes = (pagelist->offset + actual) & (CACHE_LINE_SIZE - 1); if ((actual >= 0) && (head_bytes != 0)) { if (head_bytes > actual) head_bytes = actual; memcpy((char *)bi->buf, fragments->headbuf, head_bytes); } if ((actual >= 0) && (head_bytes < actual) && (tail_bytes != 0)) { memcpy((char *)bi->buf + actual - tail_bytes, fragments->tailbuf, tail_bytes); } down(&g_free_fragments_mutex); *(FRAGMENTS_T **) fragments = g_free_fragments; g_free_fragments = fragments; up(&g_free_fragments_mutex); up(&g_free_fragments_sema); } for (i = 0; i < num_pages; i++) { if (pagelist->type != PAGELIST_WRITE) vm_page_dirty(pages[i]); } vm_page_unhold_pages(pages, num_pages); bus_dmamap_unload(bi->pagelist_dma_tag, bi->pagelist_dma_map); bus_dmamem_free(bi->pagelist_dma_tag, bi->pagelist, bi->pagelist_dma_map); bus_dmamap_destroy(bi->pagelist_dma_tag, bi->pagelist_dma_map); bus_dma_tag_destroy(bi->pagelist_dma_tag); free(bi, M_VCPAGELIST); } CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_arm.c 1004 1004 644 8066844e7c85c4446eaec49f3e0ade65 76605 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "vchiq_core.h" #include "vchiq_ioctl.h" #include "vchiq_arm.h" #define DEVICE_NAME "vchiq" /* Override the default prefix, which would be vchiq_arm (from the filename) */ #undef MODULE_PARAM_PREFIX #define MODULE_PARAM_PREFIX DEVICE_NAME "." #define VCHIQ_MINOR 0 /* Some per-instance constants */ #define MAX_COMPLETIONS 16 #define MAX_SERVICES 64 #define MAX_ELEMENTS 8 #define MSG_QUEUE_SIZE 64 #define KEEPALIVE_VER 1 #define KEEPALIVE_VER_MIN KEEPALIVE_VER MALLOC_DEFINE(M_VCHIQ, "vchiq_cdev", "VideoCore cdev memroy"); /* Run time control of log level, based on KERN_XXX level. */ int vchiq_arm_log_level = VCHIQ_LOG_DEFAULT; int vchiq_susp_log_level = VCHIQ_LOG_ERROR; #define SUSPEND_TIMER_TIMEOUT_MS 100 #define SUSPEND_RETRY_TIMER_TIMEOUT_MS 1000 #define VC_SUSPEND_NUM_OFFSET 3 /* number of values before idle which are -ve */ static const char *const suspend_state_names[] = { "VC_SUSPEND_FORCE_CANCELED", "VC_SUSPEND_REJECTED", "VC_SUSPEND_FAILED", "VC_SUSPEND_IDLE", "VC_SUSPEND_REQUESTED", "VC_SUSPEND_IN_PROGRESS", "VC_SUSPEND_SUSPENDED" }; #define VC_RESUME_NUM_OFFSET 1 /* number of values before idle which are -ve */ static const char *const resume_state_names[] = { "VC_RESUME_FAILED", "VC_RESUME_IDLE", "VC_RESUME_REQUESTED", "VC_RESUME_IN_PROGRESS", "VC_RESUME_RESUMED" }; /* The number of times we allow force suspend to timeout before actually ** _forcing_ suspend. This is to cater for SW which fails to release vchiq ** correctly - we don't want to prevent ARM suspend indefinitely in this case. */ #define FORCE_SUSPEND_FAIL_MAX 8 /* The time in ms allowed for videocore to go idle when force suspend has been * requested */ #define FORCE_SUSPEND_TIMEOUT_MS 200 static void suspend_timer_callback(unsigned long context); #ifdef notyet static int vchiq_proc_add_instance(VCHIQ_INSTANCE_T instance); static void vchiq_proc_remove_instance(VCHIQ_INSTANCE_T instance); #endif typedef struct user_service_struct { VCHIQ_SERVICE_T *service; void *userdata; VCHIQ_INSTANCE_T instance; int is_vchi; int dequeue_pending; int message_available_pos; int msg_insert; int msg_remove; struct semaphore insert_event; struct semaphore remove_event; VCHIQ_HEADER_T * msg_queue[MSG_QUEUE_SIZE]; } USER_SERVICE_T; struct bulk_waiter_node { struct bulk_waiter bulk_waiter; int pid; struct list_head list; }; struct vchiq_instance_struct { VCHIQ_STATE_T *state; VCHIQ_COMPLETION_DATA_T completions[MAX_COMPLETIONS]; int completion_insert; int completion_remove; struct semaphore insert_event; struct semaphore remove_event; struct mutex completion_mutex; int connected; int closing; int pid; int mark; struct list_head bulk_waiter_list; struct mutex bulk_waiter_list_mutex; struct proc_dir_entry *proc_entry; }; typedef struct dump_context_struct { char __user *buf; size_t actual; size_t space; loff_t offset; } DUMP_CONTEXT_T; static struct cdev * vchiq_cdev; VCHIQ_STATE_T g_state; static DEFINE_SPINLOCK(msg_queue_spinlock); static const char *const ioctl_names[] = { "CONNECT", "SHUTDOWN", "CREATE_SERVICE", "REMOVE_SERVICE", "QUEUE_MESSAGE", "QUEUE_BULK_TRANSMIT", "QUEUE_BULK_RECEIVE", "AWAIT_COMPLETION", "DEQUEUE_MESSAGE", "GET_CLIENT_ID", "GET_CONFIG", "CLOSE_SERVICE", "USE_SERVICE", "RELEASE_SERVICE", "SET_SERVICE_OPTION", "DUMP_PHYS_MEM" }; vchiq_static_assert((sizeof(ioctl_names)/sizeof(ioctl_names[0])) == (VCHIQ_IOC_MAX + 1)); static eventhandler_tag vchiq_ehtag = NULL; static d_open_t vchiq_open; static d_close_t vchiq_close; static d_ioctl_t vchiq_ioctl; static struct cdevsw vchiq_cdevsw = { .d_version = D_VERSION, .d_ioctl = vchiq_ioctl, .d_open = vchiq_open, .d_close = vchiq_close, .d_name = DEVICE_NAME, }; #if 0 static void dump_phys_mem(void *virt_addr, uint32_t num_bytes); #endif /**************************************************************************** * * add_completion * ***************************************************************************/ static VCHIQ_STATUS_T add_completion(VCHIQ_INSTANCE_T instance, VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header, USER_SERVICE_T *user_service, void *bulk_userdata) { VCHIQ_COMPLETION_DATA_T *completion; DEBUG_INITIALISE(g_state.local) while (instance->completion_insert == (instance->completion_remove + MAX_COMPLETIONS)) { /* Out of space - wait for the client */ DEBUG_TRACE(SERVICE_CALLBACK_LINE); vchiq_log_trace(vchiq_arm_log_level, "add_completion - completion queue full"); DEBUG_COUNT(COMPLETION_QUEUE_FULL_COUNT); if (down_interruptible(&instance->remove_event) != 0) { vchiq_log_info(vchiq_arm_log_level, "service_callback interrupted"); return VCHIQ_RETRY; } else if (instance->closing) { vchiq_log_info(vchiq_arm_log_level, "service_callback closing"); return VCHIQ_ERROR; } DEBUG_TRACE(SERVICE_CALLBACK_LINE); } completion = &instance->completions[instance->completion_insert & (MAX_COMPLETIONS - 1)]; completion->header = header; completion->reason = reason; /* N.B. service_userdata is updated while processing AWAIT_COMPLETION */ completion->service_userdata = user_service->service; completion->bulk_userdata = bulk_userdata; if (reason == VCHIQ_SERVICE_CLOSED) /* Take an extra reference, to be held until this CLOSED notification is delivered. */ lock_service(user_service->service); /* A write barrier is needed here to ensure that the entire completion record is written out before the insert point. */ wmb(); if (reason == VCHIQ_MESSAGE_AVAILABLE) user_service->message_available_pos = instance->completion_insert; instance->completion_insert++; up(&instance->insert_event); return VCHIQ_SUCCESS; } /**************************************************************************** * * service_callback * ***************************************************************************/ static VCHIQ_STATUS_T service_callback(VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header, VCHIQ_SERVICE_HANDLE_T handle, void *bulk_userdata) { /* How do we ensure the callback goes to the right client? ** The service_user data points to a USER_SERVICE_T record containing ** the original callback and the user state structure, which contains a ** circular buffer for completion records. */ USER_SERVICE_T *user_service; VCHIQ_SERVICE_T *service; VCHIQ_INSTANCE_T instance; DEBUG_INITIALISE(g_state.local) DEBUG_TRACE(SERVICE_CALLBACK_LINE); service = handle_to_service(handle); BUG_ON(!service); user_service = (USER_SERVICE_T *)service->base.userdata; instance = user_service->instance; if (!instance || instance->closing) return VCHIQ_SUCCESS; vchiq_log_trace(vchiq_arm_log_level, "service_callback - service %lx(%d), handle %x, reason %d, header %lx, " "instance %lx, bulk_userdata %lx", (unsigned long)user_service, service->localport, service->handle, reason, (unsigned long)header, (unsigned long)instance, (unsigned long)bulk_userdata); if (header && user_service->is_vchi) { spin_lock(&msg_queue_spinlock); while (user_service->msg_insert == (user_service->msg_remove + MSG_QUEUE_SIZE)) { spin_unlock(&msg_queue_spinlock); DEBUG_TRACE(SERVICE_CALLBACK_LINE); DEBUG_COUNT(MSG_QUEUE_FULL_COUNT); vchiq_log_trace(vchiq_arm_log_level, "service_callback - msg queue full"); /* If there is no MESSAGE_AVAILABLE in the completion ** queue, add one */ if ((user_service->message_available_pos - instance->completion_remove) < 0) { VCHIQ_STATUS_T status; vchiq_log_info(vchiq_arm_log_level, "Inserting extra MESSAGE_AVAILABLE"); DEBUG_TRACE(SERVICE_CALLBACK_LINE); status = add_completion(instance, reason, NULL, user_service, bulk_userdata); if (status != VCHIQ_SUCCESS) { DEBUG_TRACE(SERVICE_CALLBACK_LINE); return status; } } DEBUG_TRACE(SERVICE_CALLBACK_LINE); if (down_interruptible(&user_service->remove_event) != 0) { vchiq_log_info(vchiq_arm_log_level, "service_callback interrupted"); DEBUG_TRACE(SERVICE_CALLBACK_LINE); return VCHIQ_RETRY; } else if (instance->closing) { vchiq_log_info(vchiq_arm_log_level, "service_callback closing"); DEBUG_TRACE(SERVICE_CALLBACK_LINE); return VCHIQ_ERROR; } DEBUG_TRACE(SERVICE_CALLBACK_LINE); spin_lock(&msg_queue_spinlock); } user_service->msg_queue[user_service->msg_insert & (MSG_QUEUE_SIZE - 1)] = header; user_service->msg_insert++; spin_unlock(&msg_queue_spinlock); up(&user_service->insert_event); /* If there is a thread waiting in DEQUEUE_MESSAGE, or if ** there is a MESSAGE_AVAILABLE in the completion queue then ** bypass the completion queue. */ if (((user_service->message_available_pos - instance->completion_remove) >= 0) || user_service->dequeue_pending) { DEBUG_TRACE(SERVICE_CALLBACK_LINE); user_service->dequeue_pending = 0; return VCHIQ_SUCCESS; } header = NULL; } DEBUG_TRACE(SERVICE_CALLBACK_LINE); return add_completion(instance, reason, header, user_service, bulk_userdata); } /**************************************************************************** * * user_service_free * ***************************************************************************/ static void user_service_free(void *userdata) { USER_SERVICE_T *user_service = userdata; _sema_destroy(&user_service->insert_event); _sema_destroy(&user_service->remove_event); kfree(user_service); } /**************************************************************************** * * vchiq_ioctl * ***************************************************************************/ static int vchiq_ioctl(struct cdev *cdev, u_long cmd, caddr_t arg, int fflag, struct thread *td) { VCHIQ_INSTANCE_T instance; VCHIQ_STATUS_T status = VCHIQ_SUCCESS; VCHIQ_SERVICE_T *service = NULL; int ret = 0; int i, rc; DEBUG_INITIALISE(g_state.local) if ((ret = devfs_get_cdevpriv((void**)&instance))) { printf("vchiq_ioctl: devfs_get_cdevpriv failed: error %d\n", ret); return (ret); } /* XXXBSD: HACK! */ #define _IOC_NR(x) ((x) & 0xff) #define _IOC_TYPE(x) IOCGROUP(x) vchiq_log_trace(vchiq_arm_log_level, "vchiq_ioctl - instance %x, cmd %s, arg %p", (unsigned int)instance, ((_IOC_TYPE(cmd) == VCHIQ_IOC_MAGIC) && (_IOC_NR(cmd) <= VCHIQ_IOC_MAX)) ? ioctl_names[_IOC_NR(cmd)] : "", arg); switch (cmd) { case VCHIQ_IOC_SHUTDOWN: if (!instance->connected) break; /* Remove all services */ i = 0; while ((service = next_service_by_instance(instance->state, instance, &i)) != NULL) { status = vchiq_remove_service(service->handle); unlock_service(service); if (status != VCHIQ_SUCCESS) break; } service = NULL; if (status == VCHIQ_SUCCESS) { /* Wake the completion thread and ask it to exit */ instance->closing = 1; up(&instance->insert_event); } break; case VCHIQ_IOC_CONNECT: if (instance->connected) { ret = -EINVAL; break; } rc = lmutex_lock_interruptible(&instance->state->mutex); if (rc != 0) { vchiq_log_error(vchiq_arm_log_level, "vchiq: connect: could not lock mutex for " "state %d: %d", instance->state->id, rc); ret = -EINTR; break; } status = vchiq_connect_internal(instance->state, instance); lmutex_unlock(&instance->state->mutex); if (status == VCHIQ_SUCCESS) instance->connected = 1; else vchiq_log_error(vchiq_arm_log_level, "vchiq: could not connect: %d", status); break; case VCHIQ_IOC_CREATE_SERVICE: { VCHIQ_CREATE_SERVICE_T args; USER_SERVICE_T *user_service = NULL; void *userdata; int srvstate; memcpy(&args, (const void*)arg, sizeof(args)); user_service = kmalloc(sizeof(USER_SERVICE_T), GFP_KERNEL); if (!user_service) { ret = -ENOMEM; break; } if (args.is_open) { if (!instance->connected) { ret = -ENOTCONN; kfree(user_service); break; } srvstate = VCHIQ_SRVSTATE_OPENING; } else { srvstate = instance->connected ? VCHIQ_SRVSTATE_LISTENING : VCHIQ_SRVSTATE_HIDDEN; } userdata = args.params.userdata; args.params.callback = service_callback; args.params.userdata = user_service; service = vchiq_add_service_internal( instance->state, &args.params, srvstate, instance, user_service_free); if (service != NULL) { user_service->service = service; user_service->userdata = userdata; user_service->instance = instance; user_service->is_vchi = args.is_vchi; user_service->dequeue_pending = 0; user_service->message_available_pos = instance->completion_remove - 1; user_service->msg_insert = 0; user_service->msg_remove = 0; _sema_init(&user_service->insert_event, 0); _sema_init(&user_service->remove_event, 0); if (args.is_open) { status = vchiq_open_service_internal (service, instance->pid); if (status != VCHIQ_SUCCESS) { vchiq_remove_service(service->handle); service = NULL; ret = (status == VCHIQ_RETRY) ? -EINTR : -EIO; break; } } #ifdef VCHIQ_IOCTL_DEBUG printf("%s: [CREATE SERVICE] handle = %08x\n", __func__, service->handle); #endif memcpy((void *) &(((VCHIQ_CREATE_SERVICE_T*) arg)->handle), (const void *)&service->handle, sizeof(service->handle)); service = NULL; } else { ret = -EEXIST; kfree(user_service); } } break; case VCHIQ_IOC_CLOSE_SERVICE: { VCHIQ_SERVICE_HANDLE_T handle; memcpy(&handle, (const void*)arg, sizeof(handle)); #ifdef VCHIQ_IOCTL_DEBUG printf("%s: [CLOSE SERVICE] handle = %08x\n", __func__, handle); #endif service = find_service_for_instance(instance, handle); if (service != NULL) status = vchiq_close_service(service->handle); else ret = -EINVAL; } break; case VCHIQ_IOC_REMOVE_SERVICE: { VCHIQ_SERVICE_HANDLE_T handle; memcpy(&handle, (const void*)arg, sizeof(handle)); #ifdef VCHIQ_IOCTL_DEBUG printf("%s: [REMOVE SERVICE] handle = %08x\n", __func__, handle); #endif service = find_service_for_instance(instance, handle); if (service != NULL) status = vchiq_remove_service(service->handle); else ret = -EINVAL; } break; case VCHIQ_IOC_USE_SERVICE: case VCHIQ_IOC_RELEASE_SERVICE: { VCHIQ_SERVICE_HANDLE_T handle; memcpy(&handle, (const void*)arg, sizeof(handle)); #ifdef VCHIQ_IOCTL_DEBUG printf("%s: [%s SERVICE] handle = %08x\n", __func__, cmd == VCHIQ_IOC_USE_SERVICE ? "USE" : "RELEASE", handle); #endif service = find_service_for_instance(instance, handle); if (service != NULL) { status = (cmd == VCHIQ_IOC_USE_SERVICE) ? vchiq_use_service_internal(service) : vchiq_release_service_internal(service); if (status != VCHIQ_SUCCESS) { vchiq_log_error(vchiq_susp_log_level, "%s: cmd %s returned error %d for " "service %c%c%c%c:%8x", __func__, (cmd == VCHIQ_IOC_USE_SERVICE) ? "VCHIQ_IOC_USE_SERVICE" : "VCHIQ_IOC_RELEASE_SERVICE", status, VCHIQ_FOURCC_AS_4CHARS( service->base.fourcc), service->client_id); ret = -EINVAL; } } else ret = -EINVAL; } break; case VCHIQ_IOC_QUEUE_MESSAGE: { VCHIQ_QUEUE_MESSAGE_T args; memcpy(&args, (const void*)arg, sizeof(args)); #ifdef VCHIQ_IOCTL_DEBUG printf("%s: [QUEUE MESSAGE] handle = %08x\n", __func__, args.handle); #endif service = find_service_for_instance(instance, args.handle); if ((service != NULL) && (args.count <= MAX_ELEMENTS)) { /* Copy elements into kernel space */ VCHIQ_ELEMENT_T elements[MAX_ELEMENTS]; if (copy_from_user(elements, args.elements, args.count * sizeof(VCHIQ_ELEMENT_T)) == 0) status = vchiq_queue_message (args.handle, elements, args.count); else ret = -EFAULT; } else { ret = -EINVAL; } } break; case VCHIQ_IOC_QUEUE_BULK_TRANSMIT: case VCHIQ_IOC_QUEUE_BULK_RECEIVE: { VCHIQ_QUEUE_BULK_TRANSFER_T args; struct bulk_waiter_node *waiter = NULL; VCHIQ_BULK_DIR_T dir = (cmd == VCHIQ_IOC_QUEUE_BULK_TRANSMIT) ? VCHIQ_BULK_TRANSMIT : VCHIQ_BULK_RECEIVE; memcpy(&args, (const void*)arg, sizeof(args)); service = find_service_for_instance(instance, args.handle); if (!service) { ret = -EINVAL; break; } if (args.mode == VCHIQ_BULK_MODE_BLOCKING) { waiter = kzalloc(sizeof(struct bulk_waiter_node), GFP_KERNEL); if (!waiter) { ret = -ENOMEM; break; } args.userdata = &waiter->bulk_waiter; } else if (args.mode == VCHIQ_BULK_MODE_WAITING) { struct list_head *pos; lmutex_lock(&instance->bulk_waiter_list_mutex); list_for_each(pos, &instance->bulk_waiter_list) { if (list_entry(pos, struct bulk_waiter_node, list)->pid == current->p_pid) { waiter = list_entry(pos, struct bulk_waiter_node, list); list_del(pos); break; } } lmutex_unlock(&instance->bulk_waiter_list_mutex); if (!waiter) { vchiq_log_error(vchiq_arm_log_level, "no bulk_waiter found for pid %d", current->p_pid); ret = -ESRCH; break; } vchiq_log_info(vchiq_arm_log_level, "found bulk_waiter %x for pid %d", (unsigned int)waiter, current->p_pid); args.userdata = &waiter->bulk_waiter; } status = vchiq_bulk_transfer (args.handle, VCHI_MEM_HANDLE_INVALID, args.data, args.size, args.userdata, args.mode, dir); if (!waiter) break; if ((status != VCHIQ_RETRY) || fatal_signal_pending(current) || !waiter->bulk_waiter.bulk) { if (waiter->bulk_waiter.bulk) { /* Cancel the signal when the transfer ** completes. */ spin_lock(&bulk_waiter_spinlock); waiter->bulk_waiter.bulk->userdata = NULL; spin_unlock(&bulk_waiter_spinlock); } _sema_destroy(&waiter->bulk_waiter.event); kfree(waiter); } else { const VCHIQ_BULK_MODE_T mode_waiting = VCHIQ_BULK_MODE_WAITING; waiter->pid = current->p_pid; lmutex_lock(&instance->bulk_waiter_list_mutex); list_add(&waiter->list, &instance->bulk_waiter_list); lmutex_unlock(&instance->bulk_waiter_list_mutex); vchiq_log_info(vchiq_arm_log_level, "saved bulk_waiter %x for pid %d", (unsigned int)waiter, current->p_pid); memcpy((void *) &(((VCHIQ_QUEUE_BULK_TRANSFER_T *) arg)->mode), (const void *)&mode_waiting, sizeof(mode_waiting)); } } break; case VCHIQ_IOC_AWAIT_COMPLETION: { VCHIQ_AWAIT_COMPLETION_T args; int count = 0; DEBUG_TRACE(AWAIT_COMPLETION_LINE); if (!instance->connected) { ret = -ENOTCONN; break; } memcpy(&args, (const void*)arg, sizeof(args)); lmutex_lock(&instance->completion_mutex); DEBUG_TRACE(AWAIT_COMPLETION_LINE); while ((instance->completion_remove == instance->completion_insert) && !instance->closing) { DEBUG_TRACE(AWAIT_COMPLETION_LINE); lmutex_unlock(&instance->completion_mutex); rc = down_interruptible(&instance->insert_event); lmutex_lock(&instance->completion_mutex); if (rc != 0) { DEBUG_TRACE(AWAIT_COMPLETION_LINE); vchiq_log_info(vchiq_arm_log_level, "AWAIT_COMPLETION interrupted"); ret = -EINTR; break; } } DEBUG_TRACE(AWAIT_COMPLETION_LINE); /* A read memory barrier is needed to stop prefetch of a stale ** completion record */ rmb(); if (ret == 0) { int msgbufcount = args.msgbufcount; for (count = 0; count < args.count; count++) { VCHIQ_COMPLETION_DATA_T *completion; VCHIQ_SERVICE_T *service1; USER_SERVICE_T *user_service; VCHIQ_HEADER_T *header; if (instance->completion_remove == instance->completion_insert) break; completion = &instance->completions[ instance->completion_remove & (MAX_COMPLETIONS - 1)]; service1 = completion->service_userdata; user_service = service1->base.userdata; completion->service_userdata = user_service->userdata; header = completion->header; if (header) { void __user *msgbuf; int msglen; msglen = header->size + sizeof(VCHIQ_HEADER_T); /* This must be a VCHIQ-style service */ if (args.msgbufsize < msglen) { vchiq_log_error( vchiq_arm_log_level, "header %x: msgbufsize" " %x < msglen %x", (unsigned int)header, args.msgbufsize, msglen); WARN(1, "invalid message " "size\n"); if (count == 0) ret = -EMSGSIZE; break; } if (msgbufcount <= 0) /* Stall here for lack of a ** buffer for the message. */ break; /* Get the pointer from user space */ msgbufcount--; if (copy_from_user(&msgbuf, (const void __user *) &args.msgbufs[msgbufcount], sizeof(msgbuf)) != 0) { if (count == 0) ret = -EFAULT; break; } /* Copy the message to user space */ if (copy_to_user(msgbuf, header, msglen) != 0) { if (count == 0) ret = -EFAULT; break; } /* Now it has been copied, the message ** can be released. */ vchiq_release_message(service1->handle, header); /* The completion must point to the ** msgbuf. */ completion->header = msgbuf; } if (completion->reason == VCHIQ_SERVICE_CLOSED) unlock_service(service1); if (copy_to_user((void __user *)( (size_t)args.buf + count * sizeof(VCHIQ_COMPLETION_DATA_T)), completion, sizeof(VCHIQ_COMPLETION_DATA_T)) != 0) { if (ret == 0) ret = -EFAULT; break; } instance->completion_remove++; } if (msgbufcount != args.msgbufcount) { memcpy((void __user *) &((VCHIQ_AWAIT_COMPLETION_T *)arg)-> msgbufcount, &msgbufcount, sizeof(msgbufcount)); } if (count != args.count) { memcpy((void __user *) &((VCHIQ_AWAIT_COMPLETION_T *)arg)->count, &count, sizeof(count)); } } if (count != 0) up(&instance->remove_event); if ((ret == 0) && instance->closing) ret = -ENOTCONN; /* * XXXBSD: ioctl return codes are not negative as in linux, so * we can not indicate success with positive number of passed * messages */ if (ret > 0) ret = 0; lmutex_unlock(&instance->completion_mutex); DEBUG_TRACE(AWAIT_COMPLETION_LINE); } break; case VCHIQ_IOC_DEQUEUE_MESSAGE: { VCHIQ_DEQUEUE_MESSAGE_T args; USER_SERVICE_T *user_service; VCHIQ_HEADER_T *header; DEBUG_TRACE(DEQUEUE_MESSAGE_LINE); memcpy(&args, (const void*)arg, sizeof(args)); service = find_service_for_instance(instance, args.handle); if (!service) { ret = -EINVAL; break; } user_service = (USER_SERVICE_T *)service->base.userdata; if (user_service->is_vchi == 0) { ret = -EINVAL; break; } spin_lock(&msg_queue_spinlock); if (user_service->msg_remove == user_service->msg_insert) { if (!args.blocking) { spin_unlock(&msg_queue_spinlock); DEBUG_TRACE(DEQUEUE_MESSAGE_LINE); ret = -EWOULDBLOCK; break; } user_service->dequeue_pending = 1; do { spin_unlock(&msg_queue_spinlock); DEBUG_TRACE(DEQUEUE_MESSAGE_LINE); if (down_interruptible( &user_service->insert_event) != 0) { vchiq_log_info(vchiq_arm_log_level, "DEQUEUE_MESSAGE interrupted"); ret = -EINTR; break; } spin_lock(&msg_queue_spinlock); } while (user_service->msg_remove == user_service->msg_insert); if (ret) break; } BUG_ON((int)(user_service->msg_insert - user_service->msg_remove) < 0); header = user_service->msg_queue[user_service->msg_remove & (MSG_QUEUE_SIZE - 1)]; user_service->msg_remove++; spin_unlock(&msg_queue_spinlock); up(&user_service->remove_event); if (header == NULL) ret = -ENOTCONN; else if (header->size <= args.bufsize) { /* Copy to user space if msgbuf is not NULL */ if ((args.buf == NULL) || (copy_to_user((void __user *)args.buf, header->data, header->size) == 0)) { args.bufsize = header->size; memcpy((void *)arg, &args, sizeof(args)); vchiq_release_message( service->handle, header); } else ret = -EFAULT; } else { vchiq_log_error(vchiq_arm_log_level, "header %x: bufsize %x < size %x", (unsigned int)header, args.bufsize, header->size); WARN(1, "invalid size\n"); ret = -EMSGSIZE; } DEBUG_TRACE(DEQUEUE_MESSAGE_LINE); } break; case VCHIQ_IOC_GET_CLIENT_ID: { VCHIQ_SERVICE_HANDLE_T handle; memcpy(&handle, (const void*)arg, sizeof(handle)); ret = vchiq_get_client_id(handle); } break; case VCHIQ_IOC_GET_CONFIG: { VCHIQ_GET_CONFIG_T args; VCHIQ_CONFIG_T config; memcpy(&args, (const void*)arg, sizeof(args)); if (args.config_size > sizeof(config)) { ret = -EINVAL; break; } status = vchiq_get_config(instance, args.config_size, &config); if (status == VCHIQ_SUCCESS) { if (copy_to_user((void __user *)args.pconfig, &config, args.config_size) != 0) { ret = -EFAULT; break; } } } break; case VCHIQ_IOC_SET_SERVICE_OPTION: { VCHIQ_SET_SERVICE_OPTION_T args; memcpy(&args, (const void*)arg, sizeof(args)); service = find_service_for_instance(instance, args.handle); if (!service) { ret = -EINVAL; break; } status = vchiq_set_service_option( args.handle, args.option, args.value); } break; case VCHIQ_IOC_DUMP_PHYS_MEM: { VCHIQ_DUMP_MEM_T args; memcpy(&args, (const void*)arg, sizeof(args)); printf("IMPLEMENT ME: %s:%d\n", __FILE__, __LINE__); #if 0 dump_phys_mem(args.virt_addr, args.num_bytes); #endif } break; default: ret = -ENOTTY; break; } if (service) unlock_service(service); if (ret == 0) { if (status == VCHIQ_ERROR) ret = -EIO; else if (status == VCHIQ_RETRY) ret = -EINTR; } if ((status == VCHIQ_SUCCESS) && (ret < 0) && (ret != -EINTR) && (ret != -EWOULDBLOCK)) vchiq_log_info(vchiq_arm_log_level, " ioctl instance %lx, cmd %s -> status %d, %d", (unsigned long)instance, (_IOC_NR(cmd) <= VCHIQ_IOC_MAX) ? ioctl_names[_IOC_NR(cmd)] : "", status, ret); else vchiq_log_trace(vchiq_arm_log_level, " ioctl instance %lx, cmd %s -> status %d, %d", (unsigned long)instance, (_IOC_NR(cmd) <= VCHIQ_IOC_MAX) ? ioctl_names[_IOC_NR(cmd)] : "", status, ret); /* XXXBSD: report BSD-style error to userland */ if (ret < 0) ret = -ret; return ret; } static void instance_dtr(void *data) { free(data, M_VCHIQ); } /**************************************************************************** * * vchiq_open * ***************************************************************************/ static int vchiq_open(struct cdev *dev, int flags, int fmt __unused, struct thread *td) { vchiq_log_info(vchiq_arm_log_level, "vchiq_open"); /* XXXBSD: do we really need this check? */ if (1) { VCHIQ_STATE_T *state = vchiq_get_state(); VCHIQ_INSTANCE_T instance; if (!state) { vchiq_log_error(vchiq_arm_log_level, "vchiq has no connection to VideoCore"); return -ENOTCONN; } instance = kmalloc(sizeof(*instance), GFP_KERNEL); if (!instance) return -ENOMEM; instance->state = state; /* XXXBSD: PID or thread ID? */ instance->pid = td->td_proc->p_pid; #ifdef notyet ret = vchiq_proc_add_instance(instance); if (ret != 0) { kfree(instance); return ret; } #endif _sema_init(&instance->insert_event, 0); _sema_init(&instance->remove_event, 0); lmutex_init(&instance->completion_mutex); lmutex_init(&instance->bulk_waiter_list_mutex); INIT_LIST_HEAD(&instance->bulk_waiter_list); devfs_set_cdevpriv(instance, instance_dtr); } else { vchiq_log_error(vchiq_arm_log_level, "Unknown minor device"); return -ENXIO; } return 0; } /**************************************************************************** * * vchiq_release * ***************************************************************************/ static int vchiq_close(struct cdev *dev, int flags __unused, int fmt __unused, struct thread *td) { int ret = 0; if (1) { VCHIQ_INSTANCE_T instance; VCHIQ_STATE_T *state = vchiq_get_state(); VCHIQ_SERVICE_T *service; int i; if ((ret = devfs_get_cdevpriv((void**)&instance))) { printf("devfs_get_cdevpriv failed: error %d\n", ret); return (ret); } vchiq_log_info(vchiq_arm_log_level, "vchiq_release: instance=%lx", (unsigned long)instance); if (!state) { ret = -EPERM; goto out; } /* Ensure videocore is awake to allow termination. */ vchiq_use_internal(instance->state, NULL, USE_TYPE_VCHIQ); lmutex_lock(&instance->completion_mutex); /* Wake the completion thread and ask it to exit */ instance->closing = 1; up(&instance->insert_event); lmutex_unlock(&instance->completion_mutex); /* Wake the slot handler if the completion queue is full. */ up(&instance->remove_event); /* Mark all services for termination... */ i = 0; while ((service = next_service_by_instance(state, instance, &i)) != NULL) { USER_SERVICE_T *user_service = service->base.userdata; /* Wake the slot handler if the msg queue is full. */ up(&user_service->remove_event); vchiq_terminate_service_internal(service); unlock_service(service); } /* ...and wait for them to die */ i = 0; while ((service = next_service_by_instance(state, instance, &i)) != NULL) { USER_SERVICE_T *user_service = service->base.userdata; down(&service->remove_event); BUG_ON(service->srvstate != VCHIQ_SRVSTATE_FREE); spin_lock(&msg_queue_spinlock); while (user_service->msg_remove != user_service->msg_insert) { VCHIQ_HEADER_T *header = user_service-> msg_queue[user_service->msg_remove & (MSG_QUEUE_SIZE - 1)]; user_service->msg_remove++; spin_unlock(&msg_queue_spinlock); if (header) vchiq_release_message( service->handle, header); spin_lock(&msg_queue_spinlock); } spin_unlock(&msg_queue_spinlock); unlock_service(service); } /* Release any closed services */ while (instance->completion_remove != instance->completion_insert) { VCHIQ_COMPLETION_DATA_T *completion; VCHIQ_SERVICE_T *service1; completion = &instance->completions[ instance->completion_remove & (MAX_COMPLETIONS - 1)]; service1 = completion->service_userdata; if (completion->reason == VCHIQ_SERVICE_CLOSED) unlock_service(service1); instance->completion_remove++; } /* Release the PEER service count. */ vchiq_release_internal(instance->state, NULL); { struct list_head *pos, *next; list_for_each_safe(pos, next, &instance->bulk_waiter_list) { struct bulk_waiter_node *waiter; waiter = list_entry(pos, struct bulk_waiter_node, list); list_del(pos); vchiq_log_info(vchiq_arm_log_level, "bulk_waiter - cleaned up %x " "for pid %d", (unsigned int)waiter, waiter->pid); _sema_destroy(&waiter->bulk_waiter.event); kfree(waiter); } } } else { vchiq_log_error(vchiq_arm_log_level, "Unknown minor device"); ret = -ENXIO; } out: return ret; } /**************************************************************************** * * vchiq_dump * ***************************************************************************/ void vchiq_dump(void *dump_context, const char *str, int len) { DUMP_CONTEXT_T *context = (DUMP_CONTEXT_T *)dump_context; if (context->actual < context->space) { int copy_bytes; if (context->offset > 0) { int skip_bytes = min(len, (int)context->offset); str += skip_bytes; len -= skip_bytes; context->offset -= skip_bytes; if (context->offset > 0) return; } copy_bytes = min(len, (int)(context->space - context->actual)); if (copy_bytes == 0) return; memcpy(context->buf + context->actual, str, copy_bytes); context->actual += copy_bytes; len -= copy_bytes; /* If tne terminating NUL is included in the length, then it ** marks the end of a line and should be replaced with a ** carriage return. */ if ((len == 0) && (str[copy_bytes - 1] == '\0')) { char cr = '\n'; memcpy(context->buf + context->actual - 1, &cr, 1); } } } /**************************************************************************** * * vchiq_dump_platform_instance_state * ***************************************************************************/ void vchiq_dump_platform_instances(void *dump_context) { VCHIQ_STATE_T *state = vchiq_get_state(); char buf[80]; int len; int i; /* There is no list of instances, so instead scan all services, marking those that have been dumped. */ for (i = 0; i < state->unused_service; i++) { VCHIQ_SERVICE_T *service = state->services[i]; VCHIQ_INSTANCE_T instance; if (service && (service->base.callback == service_callback)) { instance = service->instance; if (instance) instance->mark = 0; } } for (i = 0; i < state->unused_service; i++) { VCHIQ_SERVICE_T *service = state->services[i]; VCHIQ_INSTANCE_T instance; if (service && (service->base.callback == service_callback)) { instance = service->instance; if (instance && !instance->mark) { len = snprintf(buf, sizeof(buf), "Instance %x: pid %d,%s completions " "%d/%d", (unsigned int)instance, instance->pid, instance->connected ? " connected, " : "", instance->completion_insert - instance->completion_remove, MAX_COMPLETIONS); vchiq_dump(dump_context, buf, len + 1); instance->mark = 1; } } } } /**************************************************************************** * * vchiq_dump_platform_service_state * ***************************************************************************/ void vchiq_dump_platform_service_state(void *dump_context, VCHIQ_SERVICE_T *service) { USER_SERVICE_T *user_service = (USER_SERVICE_T *)service->base.userdata; char buf[80]; int len; len = snprintf(buf, sizeof(buf), " instance %x", (unsigned int)service->instance); if ((service->base.callback == service_callback) && user_service->is_vchi) { len += snprintf(buf + len, sizeof(buf) - len, ", %d/%d messages", user_service->msg_insert - user_service->msg_remove, MSG_QUEUE_SIZE); if (user_service->dequeue_pending) len += snprintf(buf + len, sizeof(buf) - len, " (dequeue pending)"); } vchiq_dump(dump_context, buf, len + 1); } #ifdef notyet /**************************************************************************** * * dump_user_mem * ***************************************************************************/ static void dump_phys_mem(void *virt_addr, uint32_t num_bytes) { int rc; uint8_t *end_virt_addr = virt_addr + num_bytes; int num_pages; int offset; int end_offset; int page_idx; int prev_idx; struct page *page; struct page **pages; uint8_t *kmapped_virt_ptr; /* Align virtAddr and endVirtAddr to 16 byte boundaries. */ virt_addr = (void *)((unsigned long)virt_addr & ~0x0fuL); end_virt_addr = (void *)(((unsigned long)end_virt_addr + 15uL) & ~0x0fuL); offset = (int)(long)virt_addr & (PAGE_SIZE - 1); end_offset = (int)(long)end_virt_addr & (PAGE_SIZE - 1); num_pages = (offset + num_bytes + PAGE_SIZE - 1) / PAGE_SIZE; pages = kmalloc(sizeof(struct page *) * num_pages, GFP_KERNEL); if (pages == NULL) { vchiq_log_error(vchiq_arm_log_level, "Unable to allocation memory for %d pages\n", num_pages); return; } down_read(¤t->mm->mmap_sem); rc = get_user_pages(current, /* task */ current->mm, /* mm */ (unsigned long)virt_addr, /* start */ num_pages, /* len */ 0, /* write */ 0, /* force */ pages, /* pages (array of page pointers) */ NULL); /* vmas */ up_read(¤t->mm->mmap_sem); prev_idx = -1; page = NULL; while (offset < end_offset) { int page_offset = offset % PAGE_SIZE; page_idx = offset / PAGE_SIZE; if (page_idx != prev_idx) { if (page != NULL) kunmap(page); page = pages[page_idx]; kmapped_virt_ptr = kmap(page); prev_idx = page_idx; } if (vchiq_arm_log_level >= VCHIQ_LOG_TRACE) vchiq_log_dump_mem("ph", (uint32_t)(unsigned long)&kmapped_virt_ptr[ page_offset], &kmapped_virt_ptr[page_offset], 16); offset += 16; } if (page != NULL) kunmap(page); for (page_idx = 0; page_idx < num_pages; page_idx++) page_cache_release(pages[page_idx]); kfree(pages); } /**************************************************************************** * * vchiq_read * ***************************************************************************/ static ssize_t vchiq_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { DUMP_CONTEXT_T context; context.buf = buf; context.actual = 0; context.space = count; context.offset = *ppos; vchiq_dump_state(&context, &g_state); *ppos += context.actual; return context.actual; } #endif VCHIQ_STATE_T * vchiq_get_state(void) { if (g_state.remote == NULL) printk(KERN_ERR "%s: g_state.remote == NULL\n", __func__); else if (g_state.remote->initialised != 1) printk(KERN_NOTICE "%s: g_state.remote->initialised != 1 (%d)\n", __func__, g_state.remote->initialised); return ((g_state.remote != NULL) && (g_state.remote->initialised == 1)) ? &g_state : NULL; } /* * Autosuspend related functionality */ int vchiq_videocore_wanted(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); if (!arm_state) /* autosuspend not supported - always return wanted */ return 1; else if (arm_state->blocked_count) return 1; else if (!arm_state->videocore_use_count) /* usage count zero - check for override unless we're forcing */ if (arm_state->resume_blocked) return 0; else return vchiq_platform_videocore_wanted(state); else /* non-zero usage count - videocore still required */ return 1; } static VCHIQ_STATUS_T vchiq_keepalive_vchiq_callback(VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header, VCHIQ_SERVICE_HANDLE_T service_user, void *bulk_user) { vchiq_log_error(vchiq_susp_log_level, "%s callback reason %d", __func__, reason); return 0; } static int vchiq_keepalive_thread_func(void *v) { VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v; VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); VCHIQ_STATUS_T status; VCHIQ_INSTANCE_T instance; VCHIQ_SERVICE_HANDLE_T ka_handle; VCHIQ_SERVICE_PARAMS_T params = { .fourcc = VCHIQ_MAKE_FOURCC('K', 'E', 'E', 'P'), .callback = vchiq_keepalive_vchiq_callback, .version = KEEPALIVE_VER, .version_min = KEEPALIVE_VER_MIN }; status = vchiq_initialise(&instance); if (status != VCHIQ_SUCCESS) { vchiq_log_error(vchiq_susp_log_level, "%s vchiq_initialise failed %d", __func__, status); goto exit; } status = vchiq_connect(instance); if (status != VCHIQ_SUCCESS) { vchiq_log_error(vchiq_susp_log_level, "%s vchiq_connect failed %d", __func__, status); goto shutdown; } status = vchiq_add_service(instance, ¶ms, &ka_handle); if (status != VCHIQ_SUCCESS) { vchiq_log_error(vchiq_susp_log_level, "%s vchiq_open_service failed %d", __func__, status); goto shutdown; } while (1) { long rc = 0, uc = 0; if (wait_for_completion_interruptible(&arm_state->ka_evt) != 0) { vchiq_log_error(vchiq_susp_log_level, "%s interrupted", __func__); flush_signals(current); continue; } /* read and clear counters. Do release_count then use_count to * prevent getting more releases than uses */ rc = atomic_xchg(&arm_state->ka_release_count, 0); uc = atomic_xchg(&arm_state->ka_use_count, 0); /* Call use/release service the requisite number of times. * Process use before release so use counts don't go negative */ while (uc--) { atomic_inc(&arm_state->ka_use_ack_count); status = vchiq_use_service(ka_handle); if (status != VCHIQ_SUCCESS) { vchiq_log_error(vchiq_susp_log_level, "%s vchiq_use_service error %d", __func__, status); } } while (rc--) { status = vchiq_release_service(ka_handle); if (status != VCHIQ_SUCCESS) { vchiq_log_error(vchiq_susp_log_level, "%s vchiq_release_service error %d", __func__, status); } } } shutdown: vchiq_shutdown(instance); exit: return 0; } VCHIQ_STATUS_T vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state) { VCHIQ_STATUS_T status = VCHIQ_SUCCESS; if (arm_state) { rwlock_init(&arm_state->susp_res_lock); init_completion(&arm_state->ka_evt); atomic_set(&arm_state->ka_use_count, 0); atomic_set(&arm_state->ka_use_ack_count, 0); atomic_set(&arm_state->ka_release_count, 0); init_completion(&arm_state->vc_suspend_complete); init_completion(&arm_state->vc_resume_complete); /* Initialise to 'done' state. We only want to block on resume * completion while videocore is suspended. */ set_resume_state(arm_state, VC_RESUME_RESUMED); init_completion(&arm_state->resume_blocker); /* Initialise to 'done' state. We only want to block on this * completion while resume is blocked */ complete_all(&arm_state->resume_blocker); init_completion(&arm_state->blocked_blocker); /* Initialise to 'done' state. We only want to block on this * completion while things are waiting on the resume blocker */ complete_all(&arm_state->blocked_blocker); arm_state->suspend_timer_timeout = SUSPEND_TIMER_TIMEOUT_MS; arm_state->suspend_timer_running = 0; init_timer(&arm_state->suspend_timer); arm_state->suspend_timer.data = (unsigned long)(state); arm_state->suspend_timer.function = suspend_timer_callback; arm_state->first_connect = 0; } return status; } /* ** Functions to modify the state variables; ** set_suspend_state ** set_resume_state ** ** There are more state variables than we might like, so ensure they remain in ** step. Suspend and resume state are maintained separately, since most of ** these state machines can operate independently. However, there are a few ** states where state transitions in one state machine cause a reset to the ** other state machine. In addition, there are some completion events which ** need to occur on state machine reset and end-state(s), so these are also ** dealt with in these functions. ** ** In all states we set the state variable according to the input, but in some ** cases we perform additional steps outlined below; ** ** VC_SUSPEND_IDLE - Initialise the suspend completion at the same time. ** The suspend completion is completed after any suspend ** attempt. When we reset the state machine we also reset ** the completion. This reset occurs when videocore is ** resumed, and also if we initiate suspend after a suspend ** failure. ** ** VC_SUSPEND_IN_PROGRESS - This state is considered the point of no return for ** suspend - ie from this point on we must try to suspend ** before resuming can occur. We therefore also reset the ** resume state machine to VC_RESUME_IDLE in this state. ** ** VC_SUSPEND_SUSPENDED - Suspend has completed successfully. Also call ** complete_all on the suspend completion to notify ** anything waiting for suspend to happen. ** ** VC_SUSPEND_REJECTED - Videocore rejected suspend. Videocore will also ** initiate resume, so no need to alter resume state. ** We call complete_all on the suspend completion to notify ** of suspend rejection. ** ** VC_SUSPEND_FAILED - We failed to initiate videocore suspend. We notify the ** suspend completion and reset the resume state machine. ** ** VC_RESUME_IDLE - Initialise the resume completion at the same time. The ** resume completion is in it's 'done' state whenever ** videcore is running. Therfore, the VC_RESUME_IDLE state ** implies that videocore is suspended. ** Hence, any thread which needs to wait until videocore is ** running can wait on this completion - it will only block ** if videocore is suspended. ** ** VC_RESUME_RESUMED - Resume has completed successfully. Videocore is running. ** Call complete_all on the resume completion to unblock ** any threads waiting for resume. Also reset the suspend ** state machine to it's idle state. ** ** VC_RESUME_FAILED - Currently unused - no mechanism to fail resume exists. */ inline void set_suspend_state(VCHIQ_ARM_STATE_T *arm_state, enum vc_suspend_status new_state) { /* set the state in all cases */ arm_state->vc_suspend_state = new_state; /* state specific additional actions */ switch (new_state) { case VC_SUSPEND_FORCE_CANCELED: complete_all(&arm_state->vc_suspend_complete); break; case VC_SUSPEND_REJECTED: complete_all(&arm_state->vc_suspend_complete); break; case VC_SUSPEND_FAILED: complete_all(&arm_state->vc_suspend_complete); arm_state->vc_resume_state = VC_RESUME_RESUMED; complete_all(&arm_state->vc_resume_complete); break; case VC_SUSPEND_IDLE: INIT_COMPLETION(arm_state->vc_suspend_complete); break; case VC_SUSPEND_REQUESTED: break; case VC_SUSPEND_IN_PROGRESS: set_resume_state(arm_state, VC_RESUME_IDLE); break; case VC_SUSPEND_SUSPENDED: complete_all(&arm_state->vc_suspend_complete); break; default: BUG(); break; } } inline void set_resume_state(VCHIQ_ARM_STATE_T *arm_state, enum vc_resume_status new_state) { /* set the state in all cases */ arm_state->vc_resume_state = new_state; /* state specific additional actions */ switch (new_state) { case VC_RESUME_FAILED: break; case VC_RESUME_IDLE: INIT_COMPLETION(arm_state->vc_resume_complete); break; case VC_RESUME_REQUESTED: break; case VC_RESUME_IN_PROGRESS: break; case VC_RESUME_RESUMED: complete_all(&arm_state->vc_resume_complete); set_suspend_state(arm_state, VC_SUSPEND_IDLE); break; default: BUG(); break; } } /* should be called with the write lock held */ inline void start_suspend_timer(VCHIQ_ARM_STATE_T *arm_state) { del_timer(&arm_state->suspend_timer); arm_state->suspend_timer.expires = jiffies + msecs_to_jiffies(arm_state-> suspend_timer_timeout); add_timer(&arm_state->suspend_timer); arm_state->suspend_timer_running = 1; } /* should be called with the write lock held */ static inline void stop_suspend_timer(VCHIQ_ARM_STATE_T *arm_state) { if (arm_state->suspend_timer_running) { del_timer(&arm_state->suspend_timer); arm_state->suspend_timer_running = 0; } } static inline int need_resume(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); return (arm_state->vc_suspend_state > VC_SUSPEND_IDLE) && (arm_state->vc_resume_state < VC_RESUME_REQUESTED) && vchiq_videocore_wanted(state); } static int block_resume(VCHIQ_ARM_STATE_T *arm_state) { int status = VCHIQ_SUCCESS; const unsigned long timeout_val = msecs_to_jiffies(FORCE_SUSPEND_TIMEOUT_MS); int resume_count = 0; /* Allow any threads which were blocked by the last force suspend to * complete if they haven't already. Only give this one shot; if * blocked_count is incremented after blocked_blocker is completed * (which only happens when blocked_count hits 0) then those threads * will have to wait until next time around */ if (arm_state->blocked_count) { INIT_COMPLETION(arm_state->blocked_blocker); write_unlock_bh(&arm_state->susp_res_lock); vchiq_log_info(vchiq_susp_log_level, "%s wait for previously " "blocked clients", __func__); if (wait_for_completion_interruptible_timeout( &arm_state->blocked_blocker, timeout_val) <= 0) { vchiq_log_error(vchiq_susp_log_level, "%s wait for " "previously blocked clients failed" , __func__); status = VCHIQ_ERROR; write_lock_bh(&arm_state->susp_res_lock); goto out; } vchiq_log_info(vchiq_susp_log_level, "%s previously blocked " "clients resumed", __func__); write_lock_bh(&arm_state->susp_res_lock); } /* We need to wait for resume to complete if it's in process */ while (arm_state->vc_resume_state != VC_RESUME_RESUMED && arm_state->vc_resume_state > VC_RESUME_IDLE) { if (resume_count > 1) { status = VCHIQ_ERROR; vchiq_log_error(vchiq_susp_log_level, "%s waited too " "many times for resume" , __func__); goto out; } write_unlock_bh(&arm_state->susp_res_lock); vchiq_log_info(vchiq_susp_log_level, "%s wait for resume", __func__); if (wait_for_completion_interruptible_timeout( &arm_state->vc_resume_complete, timeout_val) <= 0) { vchiq_log_error(vchiq_susp_log_level, "%s wait for " "resume failed (%s)", __func__, resume_state_names[arm_state->vc_resume_state + VC_RESUME_NUM_OFFSET]); status = VCHIQ_ERROR; write_lock_bh(&arm_state->susp_res_lock); goto out; } vchiq_log_info(vchiq_susp_log_level, "%s resumed", __func__); write_lock_bh(&arm_state->susp_res_lock); resume_count++; } INIT_COMPLETION(arm_state->resume_blocker); arm_state->resume_blocked = 1; out: return status; } static inline void unblock_resume(VCHIQ_ARM_STATE_T *arm_state) { complete_all(&arm_state->resume_blocker); arm_state->resume_blocked = 0; } /* Initiate suspend via slot handler. Should be called with the write lock * held */ VCHIQ_STATUS_T vchiq_arm_vcsuspend(VCHIQ_STATE_T *state) { VCHIQ_STATUS_T status = VCHIQ_ERROR; VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); status = VCHIQ_SUCCESS; switch (arm_state->vc_suspend_state) { case VC_SUSPEND_REQUESTED: vchiq_log_info(vchiq_susp_log_level, "%s: suspend already " "requested", __func__); break; case VC_SUSPEND_IN_PROGRESS: vchiq_log_info(vchiq_susp_log_level, "%s: suspend already in " "progress", __func__); break; default: /* We don't expect to be in other states, so log but continue * anyway */ vchiq_log_error(vchiq_susp_log_level, "%s unexpected suspend state %s", __func__, suspend_state_names[arm_state->vc_suspend_state + VC_SUSPEND_NUM_OFFSET]); /* fall through */ case VC_SUSPEND_REJECTED: case VC_SUSPEND_FAILED: /* Ensure any idle state actions have been run */ set_suspend_state(arm_state, VC_SUSPEND_IDLE); /* fall through */ case VC_SUSPEND_IDLE: vchiq_log_info(vchiq_susp_log_level, "%s: suspending", __func__); set_suspend_state(arm_state, VC_SUSPEND_REQUESTED); /* kick the slot handler thread to initiate suspend */ request_poll(state, NULL, 0); break; } out: vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, status); return status; } void vchiq_platform_check_suspend(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); int susp = 0; if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); write_lock_bh(&arm_state->susp_res_lock); if (arm_state->vc_suspend_state == VC_SUSPEND_REQUESTED && arm_state->vc_resume_state == VC_RESUME_RESUMED) { set_suspend_state(arm_state, VC_SUSPEND_IN_PROGRESS); susp = 1; } write_unlock_bh(&arm_state->susp_res_lock); if (susp) vchiq_platform_suspend(state); out: vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__); return; } static void output_timeout_error(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); char service_err[50] = ""; int vc_use_count = arm_state->videocore_use_count; int active_services = state->unused_service; int i; if (!arm_state->videocore_use_count) { snprintf(service_err, 50, " Videocore usecount is 0"); goto output_msg; } for (i = 0; i < active_services; i++) { VCHIQ_SERVICE_T *service_ptr = state->services[i]; if (service_ptr && service_ptr->service_use_count && (service_ptr->srvstate != VCHIQ_SRVSTATE_FREE)) { snprintf(service_err, 50, " %c%c%c%c(%8x) service has " "use count %d%s", VCHIQ_FOURCC_AS_4CHARS( service_ptr->base.fourcc), service_ptr->client_id, service_ptr->service_use_count, service_ptr->service_use_count == vc_use_count ? "" : " (+ more)"); break; } } output_msg: vchiq_log_error(vchiq_susp_log_level, "timed out waiting for vc suspend (%d).%s", arm_state->autosuspend_override, service_err); } /* Try to get videocore into suspended state, regardless of autosuspend state. ** We don't actually force suspend, since videocore may get into a bad state ** if we force suspend at a bad time. Instead, we wait for autosuspend to ** determine a good point to suspend. If this doesn't happen within 100ms we ** report failure. ** ** Returns VCHIQ_SUCCESS if videocore suspended successfully, VCHIQ_RETRY if ** videocore failed to suspend in time or VCHIQ_ERROR if interrupted. */ VCHIQ_STATUS_T vchiq_arm_force_suspend(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); VCHIQ_STATUS_T status = VCHIQ_ERROR; long rc = 0; int repeat = -1; if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); write_lock_bh(&arm_state->susp_res_lock); status = block_resume(arm_state); if (status != VCHIQ_SUCCESS) goto unlock; if (arm_state->vc_suspend_state == VC_SUSPEND_SUSPENDED) { /* Already suspended - just block resume and exit */ vchiq_log_info(vchiq_susp_log_level, "%s already suspended", __func__); status = VCHIQ_SUCCESS; goto unlock; } else if (arm_state->vc_suspend_state <= VC_SUSPEND_IDLE) { /* initiate suspend immediately in the case that we're waiting * for the timeout */ stop_suspend_timer(arm_state); if (!vchiq_videocore_wanted(state)) { vchiq_log_info(vchiq_susp_log_level, "%s videocore " "idle, initiating suspend", __func__); status = vchiq_arm_vcsuspend(state); } else if (arm_state->autosuspend_override < FORCE_SUSPEND_FAIL_MAX) { vchiq_log_info(vchiq_susp_log_level, "%s letting " "videocore go idle", __func__); status = VCHIQ_SUCCESS; } else { vchiq_log_warning(vchiq_susp_log_level, "%s failed too " "many times - attempting suspend", __func__); status = vchiq_arm_vcsuspend(state); } } else { vchiq_log_info(vchiq_susp_log_level, "%s videocore suspend " "in progress - wait for completion", __func__); status = VCHIQ_SUCCESS; } /* Wait for suspend to happen due to system idle (not forced..) */ if (status != VCHIQ_SUCCESS) goto unblock_resume; do { write_unlock_bh(&arm_state->susp_res_lock); rc = wait_for_completion_interruptible_timeout( &arm_state->vc_suspend_complete, msecs_to_jiffies(FORCE_SUSPEND_TIMEOUT_MS)); write_lock_bh(&arm_state->susp_res_lock); if (rc < 0) { vchiq_log_warning(vchiq_susp_log_level, "%s " "interrupted waiting for suspend", __func__); status = VCHIQ_ERROR; goto unblock_resume; } else if (rc == 0) { if (arm_state->vc_suspend_state > VC_SUSPEND_IDLE) { /* Repeat timeout once if in progress */ if (repeat < 0) { repeat = 1; continue; } } arm_state->autosuspend_override++; output_timeout_error(state); status = VCHIQ_RETRY; goto unblock_resume; } } while (0 < (repeat--)); /* Check and report state in case we need to abort ARM suspend */ if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED) { status = VCHIQ_RETRY; vchiq_log_error(vchiq_susp_log_level, "%s videocore suspend failed (state %s)", __func__, suspend_state_names[arm_state->vc_suspend_state + VC_SUSPEND_NUM_OFFSET]); /* Reset the state only if it's still in an error state. * Something could have already initiated another suspend. */ if (arm_state->vc_suspend_state < VC_SUSPEND_IDLE) set_suspend_state(arm_state, VC_SUSPEND_IDLE); goto unblock_resume; } /* successfully suspended - unlock and exit */ goto unlock; unblock_resume: /* all error states need to unblock resume before exit */ unblock_resume(arm_state); unlock: write_unlock_bh(&arm_state->susp_res_lock); out: vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, status); return status; } void vchiq_check_suspend(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); write_lock_bh(&arm_state->susp_res_lock); if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED && arm_state->first_connect && !vchiq_videocore_wanted(state)) { vchiq_arm_vcsuspend(state); } write_unlock_bh(&arm_state->susp_res_lock); out: vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__); return; } int vchiq_arm_allow_resume(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); int resume = 0; int ret = -1; if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); write_lock_bh(&arm_state->susp_res_lock); unblock_resume(arm_state); resume = vchiq_check_resume(state); write_unlock_bh(&arm_state->susp_res_lock); if (resume) { if (wait_for_completion_interruptible( &arm_state->vc_resume_complete) < 0) { vchiq_log_error(vchiq_susp_log_level, "%s interrupted", __func__); /* failed, cannot accurately derive suspend * state, so exit early. */ goto out; } } read_lock_bh(&arm_state->susp_res_lock); if (arm_state->vc_suspend_state == VC_SUSPEND_SUSPENDED) { vchiq_log_info(vchiq_susp_log_level, "%s: Videocore remains suspended", __func__); } else { vchiq_log_info(vchiq_susp_log_level, "%s: Videocore resumed", __func__); ret = 0; } read_unlock_bh(&arm_state->susp_res_lock); out: vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret); return ret; } /* This function should be called with the write lock held */ int vchiq_check_resume(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); int resume = 0; if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); if (need_resume(state)) { set_resume_state(arm_state, VC_RESUME_REQUESTED); request_poll(state, NULL, 0); resume = 1; } out: vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__); return resume; } #ifdef notyet void vchiq_platform_check_resume(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); int res = 0; if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); write_lock_bh(&arm_state->susp_res_lock); if (arm_state->wake_address == 0) { vchiq_log_info(vchiq_susp_log_level, "%s: already awake", __func__); goto unlock; } if (arm_state->vc_resume_state == VC_RESUME_IN_PROGRESS) { vchiq_log_info(vchiq_susp_log_level, "%s: already resuming", __func__); goto unlock; } if (arm_state->vc_resume_state == VC_RESUME_REQUESTED) { set_resume_state(arm_state, VC_RESUME_IN_PROGRESS); res = 1; } else vchiq_log_trace(vchiq_susp_log_level, "%s: not resuming (resume state %s)", __func__, resume_state_names[arm_state->vc_resume_state + VC_RESUME_NUM_OFFSET]); unlock: write_unlock_bh(&arm_state->susp_res_lock); if (res) vchiq_platform_resume(state); out: vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__); return; } #endif VCHIQ_STATUS_T vchiq_use_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, enum USE_TYPE_E use_type) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); VCHIQ_STATUS_T ret = VCHIQ_SUCCESS; char entity[16]; int *entity_uc; int local_uc, local_entity_uc; if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); if (use_type == USE_TYPE_VCHIQ) { snprintf(entity, sizeof(entity), "VCHIQ: "); entity_uc = &arm_state->peer_use_count; } else if (service) { snprintf(entity, sizeof(entity), "%c%c%c%c:%8x", VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc), service->client_id); entity_uc = &service->service_use_count; } else { vchiq_log_error(vchiq_susp_log_level, "%s null service " "ptr", __func__); ret = VCHIQ_ERROR; goto out; } write_lock_bh(&arm_state->susp_res_lock); while (arm_state->resume_blocked) { /* If we call 'use' while force suspend is waiting for suspend, * then we're about to block the thread which the force is * waiting to complete, so we're bound to just time out. In this * case, set the suspend state such that the wait will be * canceled, so we can complete as quickly as possible. */ if (arm_state->resume_blocked && arm_state->vc_suspend_state == VC_SUSPEND_IDLE) { set_suspend_state(arm_state, VC_SUSPEND_FORCE_CANCELED); break; } /* If suspend is already in progress then we need to block */ if (!try_wait_for_completion(&arm_state->resume_blocker)) { /* Indicate that there are threads waiting on the resume * blocker. These need to be allowed to complete before * a _second_ call to force suspend can complete, * otherwise low priority threads might never actually * continue */ arm_state->blocked_count++; write_unlock_bh(&arm_state->susp_res_lock); vchiq_log_info(vchiq_susp_log_level, "%s %s resume " "blocked - waiting...", __func__, entity); if (wait_for_completion_killable( &arm_state->resume_blocker) != 0) { vchiq_log_error(vchiq_susp_log_level, "%s %s " "wait for resume blocker interrupted", __func__, entity); ret = VCHIQ_ERROR; write_lock_bh(&arm_state->susp_res_lock); arm_state->blocked_count--; write_unlock_bh(&arm_state->susp_res_lock); goto out; } vchiq_log_info(vchiq_susp_log_level, "%s %s resume " "unblocked", __func__, entity); write_lock_bh(&arm_state->susp_res_lock); if (--arm_state->blocked_count == 0) complete_all(&arm_state->blocked_blocker); } } stop_suspend_timer(arm_state); local_uc = ++arm_state->videocore_use_count; local_entity_uc = ++(*entity_uc); /* If there's a pending request which hasn't yet been serviced then * just clear it. If we're past VC_SUSPEND_REQUESTED state then * vc_resume_complete will block until we either resume or fail to * suspend */ if (arm_state->vc_suspend_state <= VC_SUSPEND_REQUESTED) set_suspend_state(arm_state, VC_SUSPEND_IDLE); if ((use_type != USE_TYPE_SERVICE_NO_RESUME) && need_resume(state)) { set_resume_state(arm_state, VC_RESUME_REQUESTED); vchiq_log_info(vchiq_susp_log_level, "%s %s count %d, state count %d", __func__, entity, local_entity_uc, local_uc); request_poll(state, NULL, 0); } else vchiq_log_trace(vchiq_susp_log_level, "%s %s count %d, state count %d", __func__, entity, *entity_uc, local_uc); write_unlock_bh(&arm_state->susp_res_lock); /* Completion is in a done state when we're not suspended, so this won't * block for the non-suspended case. */ if (!try_wait_for_completion(&arm_state->vc_resume_complete)) { vchiq_log_info(vchiq_susp_log_level, "%s %s wait for resume", __func__, entity); if (wait_for_completion_killable( &arm_state->vc_resume_complete) != 0) { vchiq_log_error(vchiq_susp_log_level, "%s %s wait for " "resume interrupted", __func__, entity); ret = VCHIQ_ERROR; goto out; } vchiq_log_info(vchiq_susp_log_level, "%s %s resumed", __func__, entity); } if (ret == VCHIQ_SUCCESS) { VCHIQ_STATUS_T status = VCHIQ_SUCCESS; long ack_cnt = atomic_xchg(&arm_state->ka_use_ack_count, 0); while (ack_cnt && (status == VCHIQ_SUCCESS)) { /* Send the use notify to videocore */ status = vchiq_send_remote_use_active(state); if (status == VCHIQ_SUCCESS) ack_cnt--; else atomic_add(ack_cnt, &arm_state->ka_use_ack_count); } } out: vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret); return ret; } VCHIQ_STATUS_T vchiq_release_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); VCHIQ_STATUS_T ret = VCHIQ_SUCCESS; char entity[16]; int *entity_uc; int local_uc, local_entity_uc; if (!arm_state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); if (service) { snprintf(entity, sizeof(entity), "%c%c%c%c:%8x", VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc), service->client_id); entity_uc = &service->service_use_count; } else { snprintf(entity, sizeof(entity), "PEER: "); entity_uc = &arm_state->peer_use_count; } write_lock_bh(&arm_state->susp_res_lock); if (!arm_state->videocore_use_count || !(*entity_uc)) { /* Don't use BUG_ON - don't allow user thread to crash kernel */ WARN_ON(!arm_state->videocore_use_count); WARN_ON(!(*entity_uc)); ret = VCHIQ_ERROR; goto unlock; } --arm_state->videocore_use_count; --(*entity_uc); if (!vchiq_videocore_wanted(state)) { if (vchiq_platform_use_suspend_timer() && !arm_state->resume_blocked) { /* Only use the timer if we're not trying to force * suspend (=> resume_blocked) */ start_suspend_timer(arm_state); } else { vchiq_log_info(vchiq_susp_log_level, "%s %s count %d, state count %d - suspending", __func__, entity, *entity_uc, arm_state->videocore_use_count); vchiq_arm_vcsuspend(state); } } else vchiq_log_trace(vchiq_susp_log_level, "%s %s count %d, state count %d", __func__, entity, *entity_uc, arm_state->videocore_use_count); unlock: write_unlock_bh(&arm_state->susp_res_lock); out: vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret); return ret; } void vchiq_on_remote_use(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); atomic_inc(&arm_state->ka_use_count); complete(&arm_state->ka_evt); } void vchiq_on_remote_release(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); atomic_inc(&arm_state->ka_release_count); complete(&arm_state->ka_evt); } VCHIQ_STATUS_T vchiq_use_service_internal(VCHIQ_SERVICE_T *service) { return vchiq_use_internal(service->state, service, USE_TYPE_SERVICE); } VCHIQ_STATUS_T vchiq_release_service_internal(VCHIQ_SERVICE_T *service) { return vchiq_release_internal(service->state, service); } static void suspend_timer_callback(unsigned long context) { VCHIQ_STATE_T *state = (VCHIQ_STATE_T *)context; VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); if (!arm_state) goto out; vchiq_log_info(vchiq_susp_log_level, "%s - suspend timer expired - check suspend", __func__); vchiq_check_suspend(state); out: return; } VCHIQ_STATUS_T vchiq_use_service_no_resume(VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_STATUS_T ret = VCHIQ_ERROR; VCHIQ_SERVICE_T *service = find_service_by_handle(handle); if (service) { ret = vchiq_use_internal(service->state, service, USE_TYPE_SERVICE_NO_RESUME); unlock_service(service); } return ret; } VCHIQ_STATUS_T vchiq_use_service(VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_STATUS_T ret = VCHIQ_ERROR; VCHIQ_SERVICE_T *service = find_service_by_handle(handle); if (service) { ret = vchiq_use_internal(service->state, service, USE_TYPE_SERVICE); unlock_service(service); } return ret; } VCHIQ_STATUS_T vchiq_release_service(VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_STATUS_T ret = VCHIQ_ERROR; VCHIQ_SERVICE_T *service = find_service_by_handle(handle); if (service) { ret = vchiq_release_internal(service->state, service); unlock_service(service); } return ret; } void vchiq_dump_service_use_state(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); int i, j = 0; /* Only dump 64 services */ static const int local_max_services = 64; /* If there's more than 64 services, only dump ones with * non-zero counts */ int only_nonzero = 0; static const char *nz = "<-- preventing suspend"; enum vc_suspend_status vc_suspend_state; enum vc_resume_status vc_resume_state; int peer_count; int vc_use_count; int active_services; struct service_data_struct { int fourcc; int clientid; int use_count; } service_data[local_max_services]; if (!arm_state) return; read_lock_bh(&arm_state->susp_res_lock); vc_suspend_state = arm_state->vc_suspend_state; vc_resume_state = arm_state->vc_resume_state; peer_count = arm_state->peer_use_count; vc_use_count = arm_state->videocore_use_count; active_services = state->unused_service; if (active_services > local_max_services) only_nonzero = 1; for (i = 0; (i < active_services) && (j < local_max_services); i++) { VCHIQ_SERVICE_T *service_ptr = state->services[i]; if (!service_ptr) continue; if (only_nonzero && !service_ptr->service_use_count) continue; if (service_ptr->srvstate != VCHIQ_SRVSTATE_FREE) { service_data[j].fourcc = service_ptr->base.fourcc; service_data[j].clientid = service_ptr->client_id; service_data[j++].use_count = service_ptr-> service_use_count; } } read_unlock_bh(&arm_state->susp_res_lock); vchiq_log_warning(vchiq_susp_log_level, "-- Videcore suspend state: %s --", suspend_state_names[vc_suspend_state + VC_SUSPEND_NUM_OFFSET]); vchiq_log_warning(vchiq_susp_log_level, "-- Videcore resume state: %s --", resume_state_names[vc_resume_state + VC_RESUME_NUM_OFFSET]); if (only_nonzero) vchiq_log_warning(vchiq_susp_log_level, "Too many active " "services (%d). Only dumping up to first %d services " "with non-zero use-count", active_services, local_max_services); for (i = 0; i < j; i++) { vchiq_log_warning(vchiq_susp_log_level, "----- %c%c%c%c:%d service count %d %s", VCHIQ_FOURCC_AS_4CHARS(service_data[i].fourcc), service_data[i].clientid, service_data[i].use_count, service_data[i].use_count ? nz : ""); } vchiq_log_warning(vchiq_susp_log_level, "----- VCHIQ use count count %d", peer_count); vchiq_log_warning(vchiq_susp_log_level, "--- Overall vchiq instance use count %d", vc_use_count); vchiq_dump_platform_use_state(state); } VCHIQ_STATUS_T vchiq_check_service(VCHIQ_SERVICE_T *service) { VCHIQ_ARM_STATE_T *arm_state; VCHIQ_STATUS_T ret = VCHIQ_ERROR; if (!service || !service->state) goto out; vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); arm_state = vchiq_platform_get_arm_state(service->state); read_lock_bh(&arm_state->susp_res_lock); if (service->service_use_count) ret = VCHIQ_SUCCESS; read_unlock_bh(&arm_state->susp_res_lock); if (ret == VCHIQ_ERROR) { vchiq_log_error(vchiq_susp_log_level, "%s ERROR - %c%c%c%c:%8x service count %d, " "state count %d, videocore suspend state %s", __func__, VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc), service->client_id, service->service_use_count, arm_state->videocore_use_count, suspend_state_names[arm_state->vc_suspend_state + VC_SUSPEND_NUM_OFFSET]); vchiq_dump_service_use_state(service->state); } out: return ret; } /* stub functions */ void vchiq_on_remote_use_active(VCHIQ_STATE_T *state) { (void)state; } void vchiq_platform_conn_state_changed(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T oldstate, VCHIQ_CONNSTATE_T newstate) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); vchiq_log_info(vchiq_susp_log_level, "%d: %s->%s", state->id, get_conn_state_name(oldstate), get_conn_state_name(newstate)); if (state->conn_state == VCHIQ_CONNSTATE_CONNECTED) { write_lock_bh(&arm_state->susp_res_lock); if (!arm_state->first_connect) { char threadname[10]; arm_state->first_connect = 1; write_unlock_bh(&arm_state->susp_res_lock); snprintf(threadname, sizeof(threadname), "VCHIQka-%d", state->id); arm_state->ka_thread = vchiq_thread_create( &vchiq_keepalive_thread_func, (void *)state, threadname); if (arm_state->ka_thread == NULL) { vchiq_log_error(vchiq_susp_log_level, "vchiq: FATAL: couldn't create thread %s", threadname); } else { wake_up_process(arm_state->ka_thread); } } else write_unlock_bh(&arm_state->susp_res_lock); } } /**************************************************************************** * * vchiq_init - called when the module is loaded. * ***************************************************************************/ int __init vchiq_init(void); int __init vchiq_init(void) { int err; #ifdef notyet /* create proc entries */ err = vchiq_proc_init(); if (err != 0) goto failed_proc_init; #endif vchiq_cdev = make_dev(&vchiq_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "vchiq"); if (!vchiq_cdev) { printf("Failed to create /dev/vchiq"); return (-ENXIO); } spin_lock_init(&msg_queue_spinlock); err = vchiq_platform_init(&g_state); if (err != 0) goto failed_platform_init; vchiq_log_info(vchiq_arm_log_level, "vchiq: initialised - version %d (min %d)", VCHIQ_VERSION, VCHIQ_VERSION_MIN); return 0; failed_platform_init: if (vchiq_cdev) { destroy_dev(vchiq_cdev); vchiq_cdev = NULL; } vchiq_log_warning(vchiq_arm_log_level, "could not load vchiq"); return err; } #ifdef notyet static int vchiq_instance_get_use_count(VCHIQ_INSTANCE_T instance) { VCHIQ_SERVICE_T *service; int use_count = 0, i; i = 0; while ((service = next_service_by_instance(instance->state, instance, &i)) != NULL) { use_count += service->service_use_count; unlock_service(service); } return use_count; } /* read the per-process use-count */ static int proc_read_use_count(char *page, char **start, off_t off, int count, int *eof, void *data) { VCHIQ_INSTANCE_T instance = data; int len, use_count; use_count = vchiq_instance_get_use_count(instance); len = snprintf(page+off, count, "%d\n", use_count); return len; } /* add an instance (process) to the proc entries */ static int vchiq_proc_add_instance(VCHIQ_INSTANCE_T instance) { char pidstr[32]; struct proc_dir_entry *top, *use_count; struct proc_dir_entry *clients = vchiq_clients_top(); int pid = instance->pid; snprintf(pidstr, sizeof(pidstr), "%d", pid); top = proc_mkdir(pidstr, clients); if (!top) goto fail_top; use_count = create_proc_read_entry("use_count", 0444, top, proc_read_use_count, instance); if (!use_count) goto fail_use_count; instance->proc_entry = top; return 0; fail_use_count: remove_proc_entry(top->name, clients); fail_top: return -ENOMEM; } static void vchiq_proc_remove_instance(VCHIQ_INSTANCE_T instance) { struct proc_dir_entry *clients = vchiq_clients_top(); remove_proc_entry("use_count", instance->proc_entry); remove_proc_entry(instance->proc_entry->name, clients); } #endif /**************************************************************************** * * vchiq_exit - called when the module is unloaded. * ***************************************************************************/ void vchiq_exit(void); void vchiq_exit(void) { if (vchiq_ehtag == NULL) EVENTHANDLER_DEREGISTER(dev_clone, vchiq_ehtag); vchiq_ehtag = NULL; vchiq_platform_exit(&g_state); if (vchiq_cdev) { destroy_dev(vchiq_cdev); vchiq_cdev = NULL; } } CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_arm.h 1004 1004 644 1662b3bfcb83839f2e9e79715cc11cc2 6083 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_ARM_H #define VCHIQ_ARM_H #include "vchiq_core.h" enum vc_suspend_status { VC_SUSPEND_FORCE_CANCELED = -3, /* Force suspend canceled, too busy */ VC_SUSPEND_REJECTED = -2, /* Videocore rejected suspend request */ VC_SUSPEND_FAILED = -1, /* Videocore suspend failed */ VC_SUSPEND_IDLE = 0, /* VC active, no suspend actions */ VC_SUSPEND_REQUESTED, /* User has requested suspend */ VC_SUSPEND_IN_PROGRESS, /* Slot handler has recvd suspend request */ VC_SUSPEND_SUSPENDED /* Videocore suspend succeeded */ }; enum vc_resume_status { VC_RESUME_FAILED = -1, /* Videocore resume failed */ VC_RESUME_IDLE = 0, /* VC suspended, no resume actions */ VC_RESUME_REQUESTED, /* User has requested resume */ VC_RESUME_IN_PROGRESS, /* Slot handler has received resume request */ VC_RESUME_RESUMED /* Videocore resumed successfully (active) */ }; enum USE_TYPE_E { USE_TYPE_SERVICE, USE_TYPE_SERVICE_NO_RESUME, USE_TYPE_VCHIQ }; typedef struct vchiq_arm_state_struct { /* Keepalive-related data */ VCHIQ_THREAD_T ka_thread; struct completion ka_evt; atomic_t ka_use_count; atomic_t ka_use_ack_count; atomic_t ka_release_count; struct completion vc_suspend_complete; struct completion vc_resume_complete; rwlock_t susp_res_lock; enum vc_suspend_status vc_suspend_state; enum vc_resume_status vc_resume_state; unsigned int wake_address; struct timer_list suspend_timer; int suspend_timer_timeout; int suspend_timer_running; /* Global use count for videocore. ** This is equal to the sum of the use counts for all services. When ** this hits zero the videocore suspend procedure will be initiated. */ int videocore_use_count; /* Use count to track requests from videocore peer. ** This use count is not associated with a service, so needs to be ** tracked separately with the state. */ int peer_use_count; /* Flag to indicate whether resume is blocked. This happens when the ** ARM is suspending */ struct completion resume_blocker; int resume_blocked; struct completion blocked_blocker; int blocked_count; int autosuspend_override; /* Flag to indicate that the first vchiq connect has made it through. ** This means that both sides should be fully ready, and we should ** be able to suspend after this point. */ int first_connect; unsigned long long suspend_start_time; unsigned long long sleep_start_time; unsigned long long resume_start_time; unsigned long long last_wake_time; } VCHIQ_ARM_STATE_T; extern int vchiq_arm_log_level; extern int vchiq_susp_log_level; extern int __init vchiq_platform_init(VCHIQ_STATE_T *state); extern void __exit vchiq_platform_exit(VCHIQ_STATE_T *state); extern VCHIQ_STATE_T * vchiq_get_state(void); extern VCHIQ_STATUS_T vchiq_arm_vcsuspend(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_arm_force_suspend(VCHIQ_STATE_T *state); extern int vchiq_arm_allow_resume(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_arm_vcresume(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state); extern int vchiq_check_resume(VCHIQ_STATE_T *state); extern void vchiq_check_suspend(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_platform_suspend(VCHIQ_STATE_T *state); extern int vchiq_platform_videocore_wanted(VCHIQ_STATE_T *state); extern int vchiq_platform_use_suspend_timer(void); extern void vchiq_dump_platform_use_state(VCHIQ_STATE_T *state); extern void vchiq_dump_service_use_state(VCHIQ_STATE_T *state); extern VCHIQ_ARM_STATE_T* vchiq_platform_get_arm_state(VCHIQ_STATE_T *state); extern int vchiq_videocore_wanted(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_use_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, enum USE_TYPE_E use_type); extern VCHIQ_STATUS_T vchiq_release_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service); void set_suspend_state(VCHIQ_ARM_STATE_T *arm_state, enum vc_suspend_status new_state); void set_resume_state(VCHIQ_ARM_STATE_T *arm_state, enum vc_resume_status new_state); void start_suspend_timer(VCHIQ_ARM_STATE_T *arm_state); extern int vchiq_proc_init(void); extern void vchiq_proc_deinit(void); extern struct proc_dir_entry *vchiq_proc_top(void); extern struct proc_dir_entry *vchiq_clients_top(void); #endif /* VCHIQ_ARM_H */ CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_build_info.h 1004 1004 644 1dc373f19b44400e7b55451c4dd47723 1925 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ const char *vchiq_get_build_hostname(void); const char *vchiq_get_build_version(void); const char *vchiq_get_build_time(void); const char *vchiq_get_build_date(void); CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_cfg.h 1004 1004 644 015bd02dbae9d78203694e1204337c50 2514 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_CFG_H #define VCHIQ_CFG_H #define VCHIQ_MAGIC VCHIQ_MAKE_FOURCC('V', 'C', 'H', 'I') /* The version of VCHIQ - change with any non-trivial change */ #define VCHIQ_VERSION 6 /* The minimum compatible version - update to match VCHIQ_VERSION with any ** incompatible change */ #define VCHIQ_VERSION_MIN 3 #define VCHIQ_MAX_STATES 1 #define VCHIQ_MAX_SERVICES 4096 #define VCHIQ_MAX_SLOTS 128 #define VCHIQ_MAX_SLOTS_PER_SIDE 64 #define VCHIQ_NUM_CURRENT_BULKS 32 #define VCHIQ_NUM_SERVICE_BULKS 4 #ifndef VCHIQ_ENABLE_DEBUG #define VCHIQ_ENABLE_DEBUG 1 #endif #ifndef VCHIQ_ENABLE_STATS #define VCHIQ_ENABLE_STATS 1 #endif #endif /* VCHIQ_CFG_H */ CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_connected.c 1004 1004 644 4e1ad114159dbd1c5e0881514e57ea5a 4118 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "vchiq_connected.h" #include "vchiq_core.h" #define MAX_CALLBACKS 10 static int g_connected; static int g_num_deferred_callbacks; static VCHIQ_CONNECTED_CALLBACK_T g_deferred_callback[MAX_CALLBACKS]; static int g_once_init; static struct mutex g_connected_mutex; /**************************************************************************** * * Function to initialize our lock. * ***************************************************************************/ static void connected_init(void) { if (!g_once_init) { lmutex_init(&g_connected_mutex); g_once_init = 1; } } /**************************************************************************** * * This function is used to defer initialization until the vchiq stack is * initialized. If the stack is already initialized, then the callback will * be made immediately, otherwise it will be deferred until * vchiq_call_connected_callbacks is called. * ***************************************************************************/ void vchiq_add_connected_callback(VCHIQ_CONNECTED_CALLBACK_T callback) { connected_init(); if (lmutex_lock_interruptible(&g_connected_mutex) != 0) return; if (g_connected) /* We're already connected. Call the callback immediately. */ callback(); else { if (g_num_deferred_callbacks >= MAX_CALLBACKS) vchiq_log_error(vchiq_core_log_level, "There are already %d callbacks registered - " "please increase MAX_CALLBACKS", g_num_deferred_callbacks); else { g_deferred_callback[g_num_deferred_callbacks] = callback; g_num_deferred_callbacks++; } } lmutex_unlock(&g_connected_mutex); } /**************************************************************************** * * This function is called by the vchiq stack once it has been connected to * the videocore and clients can start to use the stack. * ***************************************************************************/ void vchiq_call_connected_callbacks(void) { int i; connected_init(); if (lmutex_lock_interruptible(&g_connected_mutex) != 0) return; for (i = 0; i < g_num_deferred_callbacks; i++) g_deferred_callback[i](); g_num_deferred_callbacks = 0; g_connected = 1; lmutex_unlock(&g_connected_mutex); } EXPORT_SYMBOL(vchiq_add_connected_callback); CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_connected.h 1004 1004 644 9dbcdae36641245b5c9855921c34112d 2327 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_CONNECTED_H #define VCHIQ_CONNECTED_H /* ---- Include Files ----------------------------------------------------- */ /* ---- Constants and Types ---------------------------------------------- */ typedef void (*VCHIQ_CONNECTED_CALLBACK_T)(void); /* ---- Variable Externs ------------------------------------------------- */ /* ---- Function Prototypes ---------------------------------------------- */ void vchiq_add_connected_callback(VCHIQ_CONNECTED_CALLBACK_T callback); void vchiq_call_connected_callbacks(void); #endif /* VCHIQ_CONNECTED_H */ CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_core.c 1004 1004 644 eafc23be78f781ef8f39e591bb6b224a 104001 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "vchiq_core.h" #define VCHIQ_SLOT_HANDLER_STACK 8192 #define HANDLE_STATE_SHIFT 12 #define SLOT_INFO_FROM_INDEX(state, index) (state->slot_info + (index)) #define SLOT_DATA_FROM_INDEX(state, index) (state->slot_data + (index)) #define SLOT_INDEX_FROM_DATA(state, data) \ (((unsigned int)((char *)data - (char *)state->slot_data)) / \ VCHIQ_SLOT_SIZE) #define SLOT_INDEX_FROM_INFO(state, info) \ ((unsigned int)(info - state->slot_info)) #define SLOT_QUEUE_INDEX_FROM_POS(pos) \ ((int)((unsigned int)(pos) / VCHIQ_SLOT_SIZE)) #define BULK_INDEX(x) (x & (VCHIQ_NUM_SERVICE_BULKS - 1)) struct vchiq_open_payload { int fourcc; int client_id; short version; short version_min; }; struct vchiq_openack_payload { short version; }; /* we require this for consistency between endpoints */ vchiq_static_assert(sizeof(VCHIQ_HEADER_T) == 8); vchiq_static_assert(IS_POW2(sizeof(VCHIQ_HEADER_T))); vchiq_static_assert(IS_POW2(VCHIQ_NUM_CURRENT_BULKS)); vchiq_static_assert(IS_POW2(VCHIQ_NUM_SERVICE_BULKS)); vchiq_static_assert(IS_POW2(VCHIQ_MAX_SERVICES)); vchiq_static_assert(VCHIQ_VERSION >= VCHIQ_VERSION_MIN); /* Run time control of log level, based on KERN_XXX level. */ int vchiq_core_log_level = VCHIQ_LOG_DEFAULT; int vchiq_core_msg_log_level = VCHIQ_LOG_DEFAULT; int vchiq_sync_log_level = VCHIQ_LOG_DEFAULT; static atomic_t pause_bulks_count = ATOMIC_INIT(0); static DEFINE_SPINLOCK(service_spinlock); DEFINE_SPINLOCK(bulk_waiter_spinlock); DEFINE_SPINLOCK(quota_spinlock); void vchiq_core_initialize(void) { spin_lock_init(&service_spinlock); spin_lock_init(&bulk_waiter_spinlock); spin_lock_init("a_spinlock); } VCHIQ_STATE_T *vchiq_states[VCHIQ_MAX_STATES]; static unsigned int handle_seq; static const char *const srvstate_names[] = { "FREE", "HIDDEN", "LISTENING", "OPENING", "OPEN", "OPENSYNC", "CLOSESENT", "CLOSERECVD", "CLOSEWAIT", "CLOSED" }; static const char *const reason_names[] = { "SERVICE_OPENED", "SERVICE_CLOSED", "MESSAGE_AVAILABLE", "BULK_TRANSMIT_DONE", "BULK_RECEIVE_DONE", "BULK_TRANSMIT_ABORTED", "BULK_RECEIVE_ABORTED" }; static const char *const conn_state_names[] = { "DISCONNECTED", "CONNECTING", "CONNECTED", "PAUSING", "PAUSE_SENT", "PAUSED", "RESUMING", "PAUSE_TIMEOUT", "RESUME_TIMEOUT" }; static void release_message_sync(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header); static const char *msg_type_str(unsigned int msg_type) { switch (msg_type) { case VCHIQ_MSG_PADDING: return "PADDING"; case VCHIQ_MSG_CONNECT: return "CONNECT"; case VCHIQ_MSG_OPEN: return "OPEN"; case VCHIQ_MSG_OPENACK: return "OPENACK"; case VCHIQ_MSG_CLOSE: return "CLOSE"; case VCHIQ_MSG_DATA: return "DATA"; case VCHIQ_MSG_BULK_RX: return "BULK_RX"; case VCHIQ_MSG_BULK_TX: return "BULK_TX"; case VCHIQ_MSG_BULK_RX_DONE: return "BULK_RX_DONE"; case VCHIQ_MSG_BULK_TX_DONE: return "BULK_TX_DONE"; case VCHIQ_MSG_PAUSE: return "PAUSE"; case VCHIQ_MSG_RESUME: return "RESUME"; case VCHIQ_MSG_REMOTE_USE: return "REMOTE_USE"; case VCHIQ_MSG_REMOTE_RELEASE: return "REMOTE_RELEASE"; case VCHIQ_MSG_REMOTE_USE_ACTIVE: return "REMOTE_USE_ACTIVE"; } return "???"; } static inline void vchiq_set_service_state(VCHIQ_SERVICE_T *service, int newstate) { vchiq_log_info(vchiq_core_log_level, "%d: srv:%d %s->%s", service->state->id, service->localport, srvstate_names[service->srvstate], srvstate_names[newstate]); service->srvstate = newstate; } VCHIQ_SERVICE_T * find_service_by_handle(VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_SERVICE_T *service; spin_lock(&service_spinlock); service = handle_to_service(handle); if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE) && (service->handle == handle)) { BUG_ON(service->ref_count == 0); service->ref_count++; } else service = NULL; spin_unlock(&service_spinlock); if (!service) vchiq_log_info(vchiq_core_log_level, "Invalid service handle 0x%x", handle); return service; } VCHIQ_SERVICE_T * find_service_by_port(VCHIQ_STATE_T *state, int localport) { VCHIQ_SERVICE_T *service = NULL; if ((unsigned int)localport <= VCHIQ_PORT_MAX) { spin_lock(&service_spinlock); service = state->services[localport]; if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE)) { BUG_ON(service->ref_count == 0); service->ref_count++; } else service = NULL; spin_unlock(&service_spinlock); } if (!service) vchiq_log_info(vchiq_core_log_level, "Invalid port %d", localport); return service; } VCHIQ_SERVICE_T * find_service_for_instance(VCHIQ_INSTANCE_T instance, VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_SERVICE_T *service; spin_lock(&service_spinlock); service = handle_to_service(handle); if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE) && (service->handle == handle) && (service->instance == instance)) { BUG_ON(service->ref_count == 0); service->ref_count++; } else service = NULL; spin_unlock(&service_spinlock); if (!service) vchiq_log_info(vchiq_core_log_level, "Invalid service handle 0x%x", handle); return service; } VCHIQ_SERVICE_T * next_service_by_instance(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance, int *pidx) { VCHIQ_SERVICE_T *service = NULL; int idx = *pidx; spin_lock(&service_spinlock); while (idx < state->unused_service) { VCHIQ_SERVICE_T *srv = state->services[idx++]; if (srv && (srv->srvstate != VCHIQ_SRVSTATE_FREE) && (srv->instance == instance)) { service = srv; BUG_ON(service->ref_count == 0); service->ref_count++; break; } } spin_unlock(&service_spinlock); *pidx = idx; return service; } void lock_service(VCHIQ_SERVICE_T *service) { spin_lock(&service_spinlock); BUG_ON(!service || (service->ref_count == 0)); if (service) service->ref_count++; spin_unlock(&service_spinlock); } void unlock_service(VCHIQ_SERVICE_T *service) { VCHIQ_STATE_T *state = service->state; spin_lock(&service_spinlock); BUG_ON(!service || (service->ref_count == 0)); if (service && service->ref_count) { service->ref_count--; if (!service->ref_count) { BUG_ON(service->srvstate != VCHIQ_SRVSTATE_FREE); state->services[service->localport] = NULL; _sema_destroy(&service->remove_event); _sema_destroy(&service->bulk_remove_event); lmutex_destroy(&service->bulk_mutex); } else service = NULL; } spin_unlock(&service_spinlock); if (service && service->userdata_term) service->userdata_term(service->base.userdata); kfree(service); } int vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_SERVICE_T *service = find_service_by_handle(handle); int id; id = service ? service->client_id : 0; if (service) unlock_service(service); return id; } void * vchiq_get_service_userdata(VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_SERVICE_T *service = handle_to_service(handle); return service ? service->base.userdata : NULL; } int vchiq_get_service_fourcc(VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_SERVICE_T *service = handle_to_service(handle); return service ? service->base.fourcc : 0; } static void mark_service_closing_internal(VCHIQ_SERVICE_T *service, int sh_thread) { VCHIQ_STATE_T *state = service->state; VCHIQ_SERVICE_QUOTA_T *service_quota; service->closing = 1; /* Synchronise with other threads. */ lmutex_lock(&state->recycle_mutex); lmutex_unlock(&state->recycle_mutex); if (!sh_thread || (state->conn_state != VCHIQ_CONNSTATE_PAUSE_SENT)) { /* If we're pausing then the slot_mutex is held until resume * by the slot handler. Therefore don't try to acquire this * mutex if we're the slot handler and in the pause sent state. * We don't need to in this case anyway. */ lmutex_lock(&state->slot_mutex); lmutex_unlock(&state->slot_mutex); } /* Unblock any sending thread. */ service_quota = &state->service_quotas[service->localport]; up(&service_quota->quota_event); } static void mark_service_closing(VCHIQ_SERVICE_T *service) { mark_service_closing_internal(service, 0); } static inline VCHIQ_STATUS_T make_service_callback(VCHIQ_SERVICE_T *service, VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header, void *bulk_userdata) { VCHIQ_STATUS_T status; vchiq_log_trace(vchiq_core_log_level, "%d: callback:%d (%s, %x, %x)", service->state->id, service->localport, reason_names[reason], (unsigned int)header, (unsigned int)bulk_userdata); status = service->base.callback(reason, header, service->handle, bulk_userdata); if (status == VCHIQ_ERROR) { vchiq_log_warning(vchiq_core_log_level, "%d: ignoring ERROR from callback to service %x", service->state->id, service->handle); status = VCHIQ_SUCCESS; } return status; } inline void vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate) { VCHIQ_CONNSTATE_T oldstate = state->conn_state; vchiq_log_info(vchiq_core_log_level, "%d: %s->%s", state->id, conn_state_names[oldstate], conn_state_names[newstate]); state->conn_state = newstate; vchiq_platform_conn_state_changed(state, oldstate, newstate); } static inline void remote_event_create(REMOTE_EVENT_T *event) { event->armed = 0; /* Don't clear the 'fired' flag because it may already have been set ** by the other side. */ _sema_init(event->event, 0); } __unused static inline void remote_event_destroy(REMOTE_EVENT_T *event) { (void)event; } static inline int remote_event_wait(REMOTE_EVENT_T *event) { if (!event->fired) { event->armed = 1; dsb(); if (!event->fired) { if (down_interruptible(event->event) != 0) { event->armed = 0; return 0; } } event->armed = 0; wmb(); } event->fired = 0; return 1; } static inline void remote_event_signal_local(REMOTE_EVENT_T *event) { event->armed = 0; up(event->event); } static inline void remote_event_poll(REMOTE_EVENT_T *event) { if (event->fired && event->armed) remote_event_signal_local(event); } void remote_event_pollall(VCHIQ_STATE_T *state) { remote_event_poll(&state->local->sync_trigger); remote_event_poll(&state->local->sync_release); remote_event_poll(&state->local->trigger); remote_event_poll(&state->local->recycle); } /* Round up message sizes so that any space at the end of a slot is always big ** enough for a header. This relies on header size being a power of two, which ** has been verified earlier by a static assertion. */ static inline unsigned int calc_stride(unsigned int size) { /* Allow room for the header */ size += sizeof(VCHIQ_HEADER_T); /* Round up */ return (size + sizeof(VCHIQ_HEADER_T) - 1) & ~(sizeof(VCHIQ_HEADER_T) - 1); } /* Called by the slot handler thread */ static VCHIQ_SERVICE_T * get_listening_service(VCHIQ_STATE_T *state, int fourcc) { int i; WARN_ON(fourcc == VCHIQ_FOURCC_INVALID); for (i = 0; i < state->unused_service; i++) { VCHIQ_SERVICE_T *service = state->services[i]; if (service && (service->public_fourcc == fourcc) && ((service->srvstate == VCHIQ_SRVSTATE_LISTENING) || ((service->srvstate == VCHIQ_SRVSTATE_OPEN) && (service->remoteport == VCHIQ_PORT_FREE)))) { lock_service(service); return service; } } return NULL; } /* Called by the slot handler thread */ static VCHIQ_SERVICE_T * get_connected_service(VCHIQ_STATE_T *state, unsigned int port) { int i; for (i = 0; i < state->unused_service; i++) { VCHIQ_SERVICE_T *service = state->services[i]; if (service && (service->srvstate == VCHIQ_SRVSTATE_OPEN) && (service->remoteport == port)) { lock_service(service); return service; } } return NULL; } inline void request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type) { uint32_t value; if (service) { do { value = atomic_read(&service->poll_flags); } while (atomic_cmpxchg(&service->poll_flags, value, value | (1 << poll_type)) != value); do { value = atomic_read(&state->poll_services[ service->localport>>5]); } while (atomic_cmpxchg( &state->poll_services[service->localport>>5], value, value | (1 << (service->localport & 0x1f))) != value); } state->poll_needed = 1; wmb(); /* ... and ensure the slot handler runs. */ remote_event_signal_local(&state->local->trigger); } /* Called from queue_message, by the slot handler and application threads, ** with slot_mutex held */ static VCHIQ_HEADER_T * reserve_space(VCHIQ_STATE_T *state, int space, int is_blocking) { VCHIQ_SHARED_STATE_T *local = state->local; int tx_pos = state->local_tx_pos; int slot_space = VCHIQ_SLOT_SIZE - (tx_pos & VCHIQ_SLOT_MASK); if (space > slot_space) { VCHIQ_HEADER_T *header; /* Fill the remaining space with padding */ WARN_ON(state->tx_data == NULL); header = (VCHIQ_HEADER_T *) (state->tx_data + (tx_pos & VCHIQ_SLOT_MASK)); header->msgid = VCHIQ_MSGID_PADDING; header->size = slot_space - sizeof(VCHIQ_HEADER_T); tx_pos += slot_space; } /* If necessary, get the next slot. */ if ((tx_pos & VCHIQ_SLOT_MASK) == 0) { int slot_index; /* If there is no free slot... */ if (down_trylock(&state->slot_available_event) != 0) { /* ...wait for one. */ VCHIQ_STATS_INC(state, slot_stalls); /* But first, flush through the last slot. */ state->local_tx_pos = tx_pos; local->tx_pos = tx_pos; remote_event_signal(&state->remote->trigger); if (!is_blocking || (down_interruptible( &state->slot_available_event) != 0)) return NULL; /* No space available */ } BUG_ON(tx_pos == (state->slot_queue_available * VCHIQ_SLOT_SIZE)); slot_index = local->slot_queue[ SLOT_QUEUE_INDEX_FROM_POS(tx_pos) & VCHIQ_SLOT_QUEUE_MASK]; state->tx_data = (char *)SLOT_DATA_FROM_INDEX(state, slot_index); } state->local_tx_pos = tx_pos + space; return (VCHIQ_HEADER_T *)(state->tx_data + (tx_pos & VCHIQ_SLOT_MASK)); } /* Called by the recycle thread. */ static void process_free_queue(VCHIQ_STATE_T *state) { VCHIQ_SHARED_STATE_T *local = state->local; BITSET_T service_found[BITSET_SIZE(VCHIQ_MAX_SERVICES)]; int slot_queue_available; /* Use a read memory barrier to ensure that any state that may have ** been modified by another thread is not masked by stale prefetched ** values. */ rmb(); /* Find slots which have been freed by the other side, and return them ** to the available queue. */ slot_queue_available = state->slot_queue_available; while (slot_queue_available != local->slot_queue_recycle) { unsigned int pos; int slot_index = local->slot_queue[slot_queue_available++ & VCHIQ_SLOT_QUEUE_MASK]; char *data = (char *)SLOT_DATA_FROM_INDEX(state, slot_index); int data_found = 0; vchiq_log_trace(vchiq_core_log_level, "%d: pfq %d=%x %x %x", state->id, slot_index, (unsigned int)data, local->slot_queue_recycle, slot_queue_available); /* Initialise the bitmask for services which have used this ** slot */ BITSET_ZERO(service_found); pos = 0; while (pos < VCHIQ_SLOT_SIZE) { VCHIQ_HEADER_T *header = (VCHIQ_HEADER_T *)(data + pos); int msgid = header->msgid; if (VCHIQ_MSG_TYPE(msgid) == VCHIQ_MSG_DATA) { int port = VCHIQ_MSG_SRCPORT(msgid); VCHIQ_SERVICE_QUOTA_T *service_quota = &state->service_quotas[port]; int count; spin_lock("a_spinlock); count = service_quota->message_use_count; if (count > 0) service_quota->message_use_count = count - 1; spin_unlock("a_spinlock); if (count == service_quota->message_quota) /* Signal the service that it ** has dropped below its quota */ up(&service_quota->quota_event); else if (count == 0) { vchiq_log_error(vchiq_core_log_level, "service %d " "message_use_count=%d " "(header %x, msgid %x, " "header->msgid %x, " "header->size %x)", port, service_quota-> message_use_count, (unsigned int)header, msgid, header->msgid, header->size); WARN(1, "invalid message use count\n"); } if (!BITSET_IS_SET(service_found, port)) { /* Set the found bit for this service */ BITSET_SET(service_found, port); spin_lock("a_spinlock); count = service_quota->slot_use_count; if (count > 0) service_quota->slot_use_count = count - 1; spin_unlock("a_spinlock); if (count > 0) { /* Signal the service in case ** it has dropped below its ** quota */ up(&service_quota->quota_event); vchiq_log_trace( vchiq_core_log_level, "%d: pfq:%d %x@%x - " "slot_use->%d", state->id, port, header->size, (unsigned int)header, count - 1); } else { vchiq_log_error( vchiq_core_log_level, "service %d " "slot_use_count" "=%d (header %x" ", msgid %x, " "header->msgid" " %x, header->" "size %x)", port, count, (unsigned int)header, msgid, header->msgid, header->size); WARN(1, "bad slot use count\n"); } } data_found = 1; } pos += calc_stride(header->size); if (pos > VCHIQ_SLOT_SIZE) { vchiq_log_error(vchiq_core_log_level, "pfq - pos %x: header %x, msgid %x, " "header->msgid %x, header->size %x", pos, (unsigned int)header, msgid, header->msgid, header->size); WARN(1, "invalid slot position\n"); } } if (data_found) { int count; spin_lock("a_spinlock); count = state->data_use_count; if (count > 0) state->data_use_count = count - 1; spin_unlock("a_spinlock); if (count == state->data_quota) up(&state->data_quota_event); } state->slot_queue_available = slot_queue_available; up(&state->slot_available_event); } } /* Called by the slot handler and application threads */ static VCHIQ_STATUS_T queue_message(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int msgid, const VCHIQ_ELEMENT_T *elements, int count, int size, int is_blocking) { VCHIQ_SHARED_STATE_T *local; VCHIQ_SERVICE_QUOTA_T *service_quota = NULL; VCHIQ_HEADER_T *header; int type = VCHIQ_MSG_TYPE(msgid); unsigned int stride; local = state->local; stride = calc_stride(size); WARN_ON(!(stride <= VCHIQ_SLOT_SIZE)); if ((type != VCHIQ_MSG_RESUME) && (lmutex_lock_interruptible(&state->slot_mutex) != 0)) return VCHIQ_RETRY; if (type == VCHIQ_MSG_DATA) { int tx_end_index; BUG_ON(!service); if (service->closing) { /* The service has been closed */ lmutex_unlock(&state->slot_mutex); return VCHIQ_ERROR; } service_quota = &state->service_quotas[service->localport]; spin_lock("a_spinlock); /* Ensure this service doesn't use more than its quota of ** messages or slots */ tx_end_index = SLOT_QUEUE_INDEX_FROM_POS( state->local_tx_pos + stride - 1); /* Ensure data messages don't use more than their quota of ** slots */ while ((tx_end_index != state->previous_data_index) && (state->data_use_count == state->data_quota)) { VCHIQ_STATS_INC(state, data_stalls); spin_unlock("a_spinlock); lmutex_unlock(&state->slot_mutex); if (down_interruptible(&state->data_quota_event) != 0) return VCHIQ_RETRY; lmutex_lock(&state->slot_mutex); spin_lock("a_spinlock); tx_end_index = SLOT_QUEUE_INDEX_FROM_POS( state->local_tx_pos + stride - 1); if ((tx_end_index == state->previous_data_index) || (state->data_use_count < state->data_quota)) { /* Pass the signal on to other waiters */ up(&state->data_quota_event); break; } } while ((service_quota->message_use_count == service_quota->message_quota) || ((tx_end_index != service_quota->previous_tx_index) && (service_quota->slot_use_count == service_quota->slot_quota))) { spin_unlock("a_spinlock); vchiq_log_trace(vchiq_core_log_level, "%d: qm:%d %s,%x - quota stall " "(msg %d, slot %d)", state->id, service->localport, msg_type_str(type), size, service_quota->message_use_count, service_quota->slot_use_count); VCHIQ_SERVICE_STATS_INC(service, quota_stalls); lmutex_unlock(&state->slot_mutex); if (down_interruptible(&service_quota->quota_event) != 0) return VCHIQ_RETRY; if (service->closing) return VCHIQ_ERROR; if (lmutex_lock_interruptible(&state->slot_mutex) != 0) return VCHIQ_RETRY; if (service->srvstate != VCHIQ_SRVSTATE_OPEN) { /* The service has been closed */ lmutex_unlock(&state->slot_mutex); return VCHIQ_ERROR; } spin_lock("a_spinlock); tx_end_index = SLOT_QUEUE_INDEX_FROM_POS( state->local_tx_pos + stride - 1); } spin_unlock("a_spinlock); } header = reserve_space(state, stride, is_blocking); if (!header) { if (service) VCHIQ_SERVICE_STATS_INC(service, slot_stalls); lmutex_unlock(&state->slot_mutex); return VCHIQ_RETRY; } if (type == VCHIQ_MSG_DATA) { int i, pos; int tx_end_index; int slot_use_count; vchiq_log_info(vchiq_core_log_level, "%d: qm %s@%x,%x (%d->%d)", state->id, msg_type_str(VCHIQ_MSG_TYPE(msgid)), (unsigned int)header, size, VCHIQ_MSG_SRCPORT(msgid), VCHIQ_MSG_DSTPORT(msgid)); BUG_ON(!service); for (i = 0, pos = 0; i < (unsigned int)count; pos += elements[i++].size) if (elements[i].size) { if (vchiq_copy_from_user (header->data + pos, elements[i].data, (size_t) elements[i].size) != VCHIQ_SUCCESS) { lmutex_unlock(&state->slot_mutex); VCHIQ_SERVICE_STATS_INC(service, error_count); return VCHIQ_ERROR; } if (i == 0) { if (vchiq_core_msg_log_level >= VCHIQ_LOG_INFO) vchiq_log_dump_mem("Sent", 0, header->data + pos, min(64, elements[0].size)); } } spin_lock("a_spinlock); service_quota->message_use_count++; tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos - 1); /* If this transmission can't fit in the last slot used by any ** service, the data_use_count must be increased. */ if (tx_end_index != state->previous_data_index) { state->previous_data_index = tx_end_index; state->data_use_count++; } /* If this isn't the same slot last used by this service, ** the service's slot_use_count must be increased. */ if (tx_end_index != service_quota->previous_tx_index) { service_quota->previous_tx_index = tx_end_index; slot_use_count = ++service_quota->slot_use_count; } else { slot_use_count = 0; } spin_unlock("a_spinlock); if (slot_use_count) vchiq_log_trace(vchiq_core_log_level, "%d: qm:%d %s,%x - slot_use->%d (hdr %p)", state->id, service->localport, msg_type_str(VCHIQ_MSG_TYPE(msgid)), size, slot_use_count, header); VCHIQ_SERVICE_STATS_INC(service, ctrl_tx_count); VCHIQ_SERVICE_STATS_ADD(service, ctrl_tx_bytes, size); } else { vchiq_log_info(vchiq_core_log_level, "%d: qm %s@%x,%x (%d->%d)", state->id, msg_type_str(VCHIQ_MSG_TYPE(msgid)), (unsigned int)header, size, VCHIQ_MSG_SRCPORT(msgid), VCHIQ_MSG_DSTPORT(msgid)); if (size != 0) { WARN_ON(!((count == 1) && (size == elements[0].size))); memcpy(header->data, elements[0].data, elements[0].size); } VCHIQ_STATS_INC(state, ctrl_tx_count); } header->msgid = msgid; header->size = size; { int svc_fourcc; svc_fourcc = service ? service->base.fourcc : VCHIQ_MAKE_FOURCC('?', '?', '?', '?'); vchiq_log_info(vchiq_core_msg_log_level, "Sent Msg %s(%u) to %c%c%c%c s:%u d:%d len:%d", msg_type_str(VCHIQ_MSG_TYPE(msgid)), VCHIQ_MSG_TYPE(msgid), VCHIQ_FOURCC_AS_4CHARS(svc_fourcc), VCHIQ_MSG_SRCPORT(msgid), VCHIQ_MSG_DSTPORT(msgid), size); } /* Make sure the new header is visible to the peer. */ wmb(); /* Make the new tx_pos visible to the peer. */ local->tx_pos = state->local_tx_pos; wmb(); if (service && (type == VCHIQ_MSG_CLOSE)) vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSESENT); if (VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_PAUSE) lmutex_unlock(&state->slot_mutex); remote_event_signal(&state->remote->trigger); return VCHIQ_SUCCESS; } /* Called by the slot handler and application threads */ static VCHIQ_STATUS_T queue_message_sync(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int msgid, const VCHIQ_ELEMENT_T *elements, int count, int size, int is_blocking) { VCHIQ_SHARED_STATE_T *local; VCHIQ_HEADER_T *header; local = state->local; if ((VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_RESUME) && (lmutex_lock_interruptible(&state->sync_mutex) != 0)) return VCHIQ_RETRY; remote_event_wait(&local->sync_release); rmb(); header = (VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state, local->slot_sync); { int oldmsgid = header->msgid; if (oldmsgid != VCHIQ_MSGID_PADDING) vchiq_log_error(vchiq_core_log_level, "%d: qms - msgid %x, not PADDING", state->id, oldmsgid); } if (service) { int i, pos; vchiq_log_info(vchiq_sync_log_level, "%d: qms %s@%x,%x (%d->%d)", state->id, msg_type_str(VCHIQ_MSG_TYPE(msgid)), (unsigned int)header, size, VCHIQ_MSG_SRCPORT(msgid), VCHIQ_MSG_DSTPORT(msgid)); for (i = 0, pos = 0; i < (unsigned int)count; pos += elements[i++].size) if (elements[i].size) { if (vchiq_copy_from_user (header->data + pos, elements[i].data, (size_t) elements[i].size) != VCHIQ_SUCCESS) { lmutex_unlock(&state->sync_mutex); VCHIQ_SERVICE_STATS_INC(service, error_count); return VCHIQ_ERROR; } if (i == 0) { if (vchiq_sync_log_level >= VCHIQ_LOG_TRACE) vchiq_log_dump_mem("Sent Sync", 0, header->data + pos, min(64, elements[0].size)); } } VCHIQ_SERVICE_STATS_INC(service, ctrl_tx_count); VCHIQ_SERVICE_STATS_ADD(service, ctrl_tx_bytes, size); } else { vchiq_log_info(vchiq_sync_log_level, "%d: qms %s@%x,%x (%d->%d)", state->id, msg_type_str(VCHIQ_MSG_TYPE(msgid)), (unsigned int)header, size, VCHIQ_MSG_SRCPORT(msgid), VCHIQ_MSG_DSTPORT(msgid)); if (size != 0) { WARN_ON(!((count == 1) && (size == elements[0].size))); memcpy(header->data, elements[0].data, elements[0].size); } VCHIQ_STATS_INC(state, ctrl_tx_count); } header->size = size; header->msgid = msgid; if (vchiq_sync_log_level >= VCHIQ_LOG_TRACE) { int svc_fourcc; svc_fourcc = service ? service->base.fourcc : VCHIQ_MAKE_FOURCC('?', '?', '?', '?'); vchiq_log_trace(vchiq_sync_log_level, "Sent Sync Msg %s(%u) to %c%c%c%c s:%u d:%d len:%d", msg_type_str(VCHIQ_MSG_TYPE(msgid)), VCHIQ_MSG_TYPE(msgid), VCHIQ_FOURCC_AS_4CHARS(svc_fourcc), VCHIQ_MSG_SRCPORT(msgid), VCHIQ_MSG_DSTPORT(msgid), size); } /* Make sure the new header is visible to the peer. */ wmb(); remote_event_signal(&state->remote->sync_trigger); if (VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_PAUSE) lmutex_unlock(&state->sync_mutex); return VCHIQ_SUCCESS; } static inline void claim_slot(VCHIQ_SLOT_INFO_T *slot) { slot->use_count++; } static void release_slot(VCHIQ_STATE_T *state, VCHIQ_SLOT_INFO_T *slot_info, VCHIQ_HEADER_T *header, VCHIQ_SERVICE_T *service) { int release_count; lmutex_lock(&state->recycle_mutex); if (header) { int msgid = header->msgid; if (((msgid & VCHIQ_MSGID_CLAIMED) == 0) || (service && service->closing)) { lmutex_unlock(&state->recycle_mutex); return; } /* Rewrite the message header to prevent a double ** release */ header->msgid = msgid & ~VCHIQ_MSGID_CLAIMED; } release_count = slot_info->release_count; slot_info->release_count = ++release_count; if (release_count == slot_info->use_count) { int slot_queue_recycle; /* Add to the freed queue */ /* A read barrier is necessary here to prevent speculative ** fetches of remote->slot_queue_recycle from overtaking the ** mutex. */ rmb(); slot_queue_recycle = state->remote->slot_queue_recycle; state->remote->slot_queue[slot_queue_recycle & VCHIQ_SLOT_QUEUE_MASK] = SLOT_INDEX_FROM_INFO(state, slot_info); state->remote->slot_queue_recycle = slot_queue_recycle + 1; vchiq_log_info(vchiq_core_log_level, "%d: release_slot %d - recycle->%x", state->id, SLOT_INDEX_FROM_INFO(state, slot_info), state->remote->slot_queue_recycle); /* A write barrier is necessary, but remote_event_signal ** contains one. */ remote_event_signal(&state->remote->recycle); } lmutex_unlock(&state->recycle_mutex); } /* Called by the slot handler - don't hold the bulk mutex */ static VCHIQ_STATUS_T notify_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue, int retry_poll) { VCHIQ_STATUS_T status = VCHIQ_SUCCESS; vchiq_log_trace(vchiq_core_log_level, "%d: nb:%d %cx - p=%x rn=%x r=%x", service->state->id, service->localport, (queue == &service->bulk_tx) ? 't' : 'r', queue->process, queue->remote_notify, queue->remove); if (service->state->is_master) { while (queue->remote_notify != queue->process) { VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->remote_notify)]; int msgtype = (bulk->dir == VCHIQ_BULK_TRANSMIT) ? VCHIQ_MSG_BULK_RX_DONE : VCHIQ_MSG_BULK_TX_DONE; int msgid = VCHIQ_MAKE_MSG(msgtype, service->localport, service->remoteport); VCHIQ_ELEMENT_T element = { &bulk->actual, 4 }; /* Only reply to non-dummy bulk requests */ if (bulk->remote_data) { status = queue_message(service->state, NULL, msgid, &element, 1, 4, 0); if (status != VCHIQ_SUCCESS) break; } queue->remote_notify++; } } else { queue->remote_notify = queue->process; } if (status == VCHIQ_SUCCESS) { while (queue->remove != queue->remote_notify) { VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->remove)]; /* Only generate callbacks for non-dummy bulk ** requests, and non-terminated services */ if (bulk->data && service->instance) { if (bulk->actual != VCHIQ_BULK_ACTUAL_ABORTED) { if (bulk->dir == VCHIQ_BULK_TRANSMIT) { VCHIQ_SERVICE_STATS_INC(service, bulk_tx_count); VCHIQ_SERVICE_STATS_ADD(service, bulk_tx_bytes, bulk->actual); } else { VCHIQ_SERVICE_STATS_INC(service, bulk_rx_count); VCHIQ_SERVICE_STATS_ADD(service, bulk_rx_bytes, bulk->actual); } } else { VCHIQ_SERVICE_STATS_INC(service, bulk_aborted_count); } if (bulk->mode == VCHIQ_BULK_MODE_BLOCKING) { struct bulk_waiter *waiter; spin_lock(&bulk_waiter_spinlock); waiter = bulk->userdata; if (waiter) { waiter->actual = bulk->actual; up(&waiter->event); } spin_unlock(&bulk_waiter_spinlock); } else if (bulk->mode == VCHIQ_BULK_MODE_CALLBACK) { VCHIQ_REASON_T reason = (bulk->dir == VCHIQ_BULK_TRANSMIT) ? ((bulk->actual == VCHIQ_BULK_ACTUAL_ABORTED) ? VCHIQ_BULK_TRANSMIT_ABORTED : VCHIQ_BULK_TRANSMIT_DONE) : ((bulk->actual == VCHIQ_BULK_ACTUAL_ABORTED) ? VCHIQ_BULK_RECEIVE_ABORTED : VCHIQ_BULK_RECEIVE_DONE); status = make_service_callback(service, reason, NULL, bulk->userdata); if (status == VCHIQ_RETRY) break; } } queue->remove++; up(&service->bulk_remove_event); } if (!retry_poll) status = VCHIQ_SUCCESS; } if (status == VCHIQ_RETRY) request_poll(service->state, service, (queue == &service->bulk_tx) ? VCHIQ_POLL_TXNOTIFY : VCHIQ_POLL_RXNOTIFY); return status; } /* Called by the slot handler thread */ static void poll_services(VCHIQ_STATE_T *state) { int group, i; for (group = 0; group < BITSET_SIZE(state->unused_service); group++) { uint32_t flags; flags = atomic_xchg(&state->poll_services[group], 0); for (i = 0; flags; i++) { if (flags & (1 << i)) { VCHIQ_SERVICE_T *service = find_service_by_port(state, (group<<5) + i); uint32_t service_flags; flags &= ~(1 << i); if (!service) continue; service_flags = atomic_xchg(&service->poll_flags, 0); if (service_flags & (1 << VCHIQ_POLL_REMOVE)) { vchiq_log_info(vchiq_core_log_level, "%d: ps - remove %d<->%d", state->id, service->localport, service->remoteport); /* Make it look like a client, because it must be removed and not left in the LISTENING state. */ service->public_fourcc = VCHIQ_FOURCC_INVALID; if (vchiq_close_service_internal( service, 0/*!close_recvd*/) != VCHIQ_SUCCESS) request_poll(state, service, VCHIQ_POLL_REMOVE); } else if (service_flags & (1 << VCHIQ_POLL_TERMINATE)) { vchiq_log_info(vchiq_core_log_level, "%d: ps - terminate %d<->%d", state->id, service->localport, service->remoteport); if (vchiq_close_service_internal( service, 0/*!close_recvd*/) != VCHIQ_SUCCESS) request_poll(state, service, VCHIQ_POLL_TERMINATE); } if (service_flags & (1 << VCHIQ_POLL_TXNOTIFY)) notify_bulks(service, &service->bulk_tx, 1/*retry_poll*/); if (service_flags & (1 << VCHIQ_POLL_RXNOTIFY)) notify_bulks(service, &service->bulk_rx, 1/*retry_poll*/); unlock_service(service); } } } } /* Called by the slot handler or application threads, holding the bulk mutex. */ static int resolve_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue) { VCHIQ_STATE_T *state = service->state; int resolved = 0; int rc; while ((queue->process != queue->local_insert) && (queue->process != queue->remote_insert)) { VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->process)]; vchiq_log_trace(vchiq_core_log_level, "%d: rb:%d %cx - li=%x ri=%x p=%x", state->id, service->localport, (queue == &service->bulk_tx) ? 't' : 'r', queue->local_insert, queue->remote_insert, queue->process); WARN_ON(!((int)(queue->local_insert - queue->process) > 0)); WARN_ON(!((int)(queue->remote_insert - queue->process) > 0)); rc = lmutex_lock_interruptible(&state->bulk_transfer_mutex); if (rc != 0) break; vchiq_transfer_bulk(bulk); lmutex_unlock(&state->bulk_transfer_mutex); if (vchiq_core_msg_log_level >= VCHIQ_LOG_INFO) { const char *header = (queue == &service->bulk_tx) ? "Send Bulk to" : "Recv Bulk from"; if (bulk->actual != VCHIQ_BULK_ACTUAL_ABORTED) vchiq_log_info(vchiq_core_msg_log_level, "%s %c%c%c%c d:%d len:%d %x<->%x", header, VCHIQ_FOURCC_AS_4CHARS( service->base.fourcc), service->remoteport, bulk->size, (unsigned int)bulk->data, (unsigned int)bulk->remote_data); else vchiq_log_info(vchiq_core_msg_log_level, "%s %c%c%c%c d:%d ABORTED - tx len:%d," " rx len:%d %x<->%x", header, VCHIQ_FOURCC_AS_4CHARS( service->base.fourcc), service->remoteport, bulk->size, bulk->remote_size, (unsigned int)bulk->data, (unsigned int)bulk->remote_data); } vchiq_complete_bulk(bulk); queue->process++; resolved++; } return resolved; } /* Called with the bulk_mutex held */ static void abort_outstanding_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue) { int is_tx = (queue == &service->bulk_tx); vchiq_log_trace(vchiq_core_log_level, "%d: aob:%d %cx - li=%x ri=%x p=%x", service->state->id, service->localport, is_tx ? 't' : 'r', queue->local_insert, queue->remote_insert, queue->process); WARN_ON(!((int)(queue->local_insert - queue->process) >= 0)); WARN_ON(!((int)(queue->remote_insert - queue->process) >= 0)); while ((queue->process != queue->local_insert) || (queue->process != queue->remote_insert)) { VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->process)]; if (queue->process == queue->remote_insert) { /* fabricate a matching dummy bulk */ bulk->remote_data = NULL; bulk->remote_size = 0; queue->remote_insert++; } if (queue->process != queue->local_insert) { vchiq_complete_bulk(bulk); vchiq_log_info(vchiq_core_msg_log_level, "%s %c%c%c%c d:%d ABORTED - tx len:%d, " "rx len:%d", is_tx ? "Send Bulk to" : "Recv Bulk from", VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc), service->remoteport, bulk->size, bulk->remote_size); } else { /* fabricate a matching dummy bulk */ bulk->data = NULL; bulk->size = 0; bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED; bulk->dir = is_tx ? VCHIQ_BULK_TRANSMIT : VCHIQ_BULK_RECEIVE; queue->local_insert++; } queue->process++; } } /* Called from the slot handler thread */ static void pause_bulks(VCHIQ_STATE_T *state) { if (unlikely(atomic_inc_return(&pause_bulks_count) != 1)) { WARN_ON_ONCE(1); atomic_set(&pause_bulks_count, 1); return; } /* Block bulk transfers from all services */ lmutex_lock(&state->bulk_transfer_mutex); } /* Called from the slot handler thread */ static void resume_bulks(VCHIQ_STATE_T *state) { int i; if (unlikely(atomic_dec_return(&pause_bulks_count) != 0)) { WARN_ON_ONCE(1); atomic_set(&pause_bulks_count, 0); return; } /* Allow bulk transfers from all services */ lmutex_unlock(&state->bulk_transfer_mutex); if (state->deferred_bulks == 0) return; /* Deal with any bulks which had to be deferred due to being in * paused state. Don't try to match up to number of deferred bulks * in case we've had something come and close the service in the * interim - just process all bulk queues for all services */ vchiq_log_info(vchiq_core_log_level, "%s: processing %d deferred bulks", __func__, state->deferred_bulks); for (i = 0; i < state->unused_service; i++) { VCHIQ_SERVICE_T *service = state->services[i]; int resolved_rx = 0; int resolved_tx = 0; if (!service || (service->srvstate != VCHIQ_SRVSTATE_OPEN)) continue; lmutex_lock(&service->bulk_mutex); resolved_rx = resolve_bulks(service, &service->bulk_rx); resolved_tx = resolve_bulks(service, &service->bulk_tx); lmutex_unlock(&service->bulk_mutex); if (resolved_rx) notify_bulks(service, &service->bulk_rx, 1); if (resolved_tx) notify_bulks(service, &service->bulk_tx, 1); } state->deferred_bulks = 0; } static int parse_open(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header) { VCHIQ_SERVICE_T *service = NULL; int msgid, size; unsigned int localport, remoteport; msgid = header->msgid; size = header->size; //int type = VCHIQ_MSG_TYPE(msgid); localport = VCHIQ_MSG_DSTPORT(msgid); remoteport = VCHIQ_MSG_SRCPORT(msgid); if (size >= sizeof(struct vchiq_open_payload)) { const struct vchiq_open_payload *payload = (struct vchiq_open_payload *)header->data; unsigned int fourcc; fourcc = payload->fourcc; vchiq_log_info(vchiq_core_log_level, "%d: prs OPEN@%x (%d->'%c%c%c%c')", state->id, (unsigned int)header, localport, VCHIQ_FOURCC_AS_4CHARS(fourcc)); service = get_listening_service(state, fourcc); if (service) { /* A matching service exists */ short v = payload->version; short version_min = payload->version_min; if ((service->version < version_min) || (v < service->version_min)) { /* Version mismatch */ vchiq_loud_error_header(); vchiq_loud_error("%d: service %d (%c%c%c%c) " "version mismatch - local (%d, min %d)" " vs. remote (%d, min %d)", state->id, service->localport, VCHIQ_FOURCC_AS_4CHARS(fourcc), service->version, service->version_min, v, version_min); vchiq_loud_error_footer(); unlock_service(service); goto fail_open; } service->peer_version = v; if (service->srvstate == VCHIQ_SRVSTATE_LISTENING) { struct vchiq_openack_payload ack_payload = { service->version }; VCHIQ_ELEMENT_T body = { &ack_payload, sizeof(ack_payload) }; /* Acknowledge the OPEN */ if (service->sync) { if (queue_message_sync(state, NULL, VCHIQ_MAKE_MSG( VCHIQ_MSG_OPENACK, service->localport, remoteport), &body, 1, sizeof(ack_payload), 0) == VCHIQ_RETRY) goto bail_not_ready; } else { if (queue_message(state, NULL, VCHIQ_MAKE_MSG( VCHIQ_MSG_OPENACK, service->localport, remoteport), &body, 1, sizeof(ack_payload), 0) == VCHIQ_RETRY) goto bail_not_ready; } /* The service is now open */ vchiq_set_service_state(service, service->sync ? VCHIQ_SRVSTATE_OPENSYNC : VCHIQ_SRVSTATE_OPEN); } service->remoteport = remoteport; service->client_id = ((int *)header->data)[1]; if (make_service_callback(service, VCHIQ_SERVICE_OPENED, NULL, NULL) == VCHIQ_RETRY) { /* Bail out if not ready */ service->remoteport = VCHIQ_PORT_FREE; goto bail_not_ready; } /* Success - the message has been dealt with */ unlock_service(service); return 1; } } fail_open: /* No available service, or an invalid request - send a CLOSE */ if (queue_message(state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_CLOSE, 0, VCHIQ_MSG_SRCPORT(msgid)), NULL, 0, 0, 0) == VCHIQ_RETRY) goto bail_not_ready; return 1; bail_not_ready: if (service) unlock_service(service); return 0; } /* Called by the slot handler thread */ static void parse_rx_slots(VCHIQ_STATE_T *state) { VCHIQ_SHARED_STATE_T *remote = state->remote; VCHIQ_SERVICE_T *service = NULL; int tx_pos; DEBUG_INITIALISE(state->local) tx_pos = remote->tx_pos; while (state->rx_pos != tx_pos) { VCHIQ_HEADER_T *header; int msgid, size; int type; unsigned int localport, remoteport; DEBUG_TRACE(PARSE_LINE); if (!state->rx_data) { int rx_index; WARN_ON(!((state->rx_pos & VCHIQ_SLOT_MASK) == 0)); rx_index = remote->slot_queue[ SLOT_QUEUE_INDEX_FROM_POS(state->rx_pos) & VCHIQ_SLOT_QUEUE_MASK]; state->rx_data = (char *)SLOT_DATA_FROM_INDEX(state, rx_index); state->rx_info = SLOT_INFO_FROM_INDEX(state, rx_index); /* Initialise use_count to one, and increment ** release_count at the end of the slot to avoid ** releasing the slot prematurely. */ state->rx_info->use_count = 1; state->rx_info->release_count = 0; } header = (VCHIQ_HEADER_T *)(state->rx_data + (state->rx_pos & VCHIQ_SLOT_MASK)); DEBUG_VALUE(PARSE_HEADER, (int)header); msgid = header->msgid; DEBUG_VALUE(PARSE_MSGID, msgid); size = header->size; type = VCHIQ_MSG_TYPE(msgid); localport = VCHIQ_MSG_DSTPORT(msgid); remoteport = VCHIQ_MSG_SRCPORT(msgid); if (type != VCHIQ_MSG_DATA) VCHIQ_STATS_INC(state, ctrl_rx_count); switch (type) { case VCHIQ_MSG_OPENACK: case VCHIQ_MSG_CLOSE: case VCHIQ_MSG_DATA: case VCHIQ_MSG_BULK_RX: case VCHIQ_MSG_BULK_TX: case VCHIQ_MSG_BULK_RX_DONE: case VCHIQ_MSG_BULK_TX_DONE: service = find_service_by_port(state, localport); if ((!service || service->remoteport != remoteport) && (localport == 0) && (type == VCHIQ_MSG_CLOSE)) { /* This could be a CLOSE from a client which hadn't yet received the OPENACK - look for the connected service */ if (service) unlock_service(service); service = get_connected_service(state, remoteport); if (service) vchiq_log_warning(vchiq_core_log_level, "%d: prs %s@%x (%d->%d) - " "found connected service %d", state->id, msg_type_str(type), (unsigned int)header, remoteport, localport, service->localport); } if (!service) { vchiq_log_error(vchiq_core_log_level, "%d: prs %s@%x (%d->%d) - " "invalid/closed service %d", state->id, msg_type_str(type), (unsigned int)header, remoteport, localport, localport); goto skip_message; } break; default: break; } if (vchiq_core_msg_log_level >= VCHIQ_LOG_INFO) { int svc_fourcc; svc_fourcc = service ? service->base.fourcc : VCHIQ_MAKE_FOURCC('?', '?', '?', '?'); vchiq_log_info(vchiq_core_msg_log_level, "Rcvd Msg %s(%u) from %c%c%c%c s:%d d:%d " "len:%d", msg_type_str(type), type, VCHIQ_FOURCC_AS_4CHARS(svc_fourcc), remoteport, localport, size); if (size > 0) vchiq_log_dump_mem("Rcvd", 0, header->data, min(64, size)); } if (((unsigned int)header & VCHIQ_SLOT_MASK) + calc_stride(size) > VCHIQ_SLOT_SIZE) { vchiq_log_error(vchiq_core_log_level, "header %x (msgid %x) - size %x too big for " "slot", (unsigned int)header, (unsigned int)msgid, (unsigned int)size); WARN(1, "oversized for slot\n"); } switch (type) { case VCHIQ_MSG_OPEN: WARN_ON(!(VCHIQ_MSG_DSTPORT(msgid) == 0)); if (!parse_open(state, header)) goto bail_not_ready; break; case VCHIQ_MSG_OPENACK: if (size >= sizeof(struct vchiq_openack_payload)) { const struct vchiq_openack_payload *payload = (struct vchiq_openack_payload *) header->data; service->peer_version = payload->version; } vchiq_log_info(vchiq_core_log_level, "%d: prs OPENACK@%x,%x (%d->%d) v:%d", state->id, (unsigned int)header, size, remoteport, localport, service->peer_version); if (service->srvstate == VCHIQ_SRVSTATE_OPENING) { service->remoteport = remoteport; vchiq_set_service_state(service, VCHIQ_SRVSTATE_OPEN); up(&service->remove_event); } else vchiq_log_error(vchiq_core_log_level, "OPENACK received in state %s", srvstate_names[service->srvstate]); break; case VCHIQ_MSG_CLOSE: WARN_ON(size != 0); /* There should be no data */ vchiq_log_info(vchiq_core_log_level, "%d: prs CLOSE@%x (%d->%d)", state->id, (unsigned int)header, remoteport, localport); mark_service_closing_internal(service, 1); if (vchiq_close_service_internal(service, 1/*close_recvd*/) == VCHIQ_RETRY) goto bail_not_ready; vchiq_log_info(vchiq_core_log_level, "Close Service %c%c%c%c s:%u d:%d", VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc), service->localport, service->remoteport); break; case VCHIQ_MSG_DATA: vchiq_log_trace(vchiq_core_log_level, "%d: prs DATA@%x,%x (%d->%d)", state->id, (unsigned int)header, size, remoteport, localport); if ((service->remoteport == remoteport) && (service->srvstate == VCHIQ_SRVSTATE_OPEN)) { header->msgid = msgid | VCHIQ_MSGID_CLAIMED; claim_slot(state->rx_info); DEBUG_TRACE(PARSE_LINE); if (make_service_callback(service, VCHIQ_MESSAGE_AVAILABLE, header, NULL) == VCHIQ_RETRY) { DEBUG_TRACE(PARSE_LINE); goto bail_not_ready; } VCHIQ_SERVICE_STATS_INC(service, ctrl_rx_count); VCHIQ_SERVICE_STATS_ADD(service, ctrl_rx_bytes, size); } else { VCHIQ_STATS_INC(state, error_count); } break; case VCHIQ_MSG_CONNECT: vchiq_log_info(vchiq_core_log_level, "%d: prs CONNECT@%x", state->id, (unsigned int)header); up(&state->connect); break; case VCHIQ_MSG_BULK_RX: case VCHIQ_MSG_BULK_TX: { VCHIQ_BULK_QUEUE_T *queue; WARN_ON(!state->is_master); queue = (type == VCHIQ_MSG_BULK_RX) ? &service->bulk_tx : &service->bulk_rx; if ((service->remoteport == remoteport) && (service->srvstate == VCHIQ_SRVSTATE_OPEN)) { VCHIQ_BULK_T *bulk; int resolved = 0; DEBUG_TRACE(PARSE_LINE); if (lmutex_lock_interruptible( &service->bulk_mutex) != 0) { DEBUG_TRACE(PARSE_LINE); goto bail_not_ready; } WARN_ON(!(queue->remote_insert < queue->remove + VCHIQ_NUM_SERVICE_BULKS)); bulk = &queue->bulks[ BULK_INDEX(queue->remote_insert)]; bulk->remote_data = (void *)((int *)header->data)[0]; bulk->remote_size = ((int *)header->data)[1]; wmb(); vchiq_log_info(vchiq_core_log_level, "%d: prs %s@%x (%d->%d) %x@%x", state->id, msg_type_str(type), (unsigned int)header, remoteport, localport, bulk->remote_size, (unsigned int)bulk->remote_data); queue->remote_insert++; if (atomic_read(&pause_bulks_count)) { state->deferred_bulks++; vchiq_log_info(vchiq_core_log_level, "%s: deferring bulk (%d)", __func__, state->deferred_bulks); if (state->conn_state != VCHIQ_CONNSTATE_PAUSE_SENT) vchiq_log_error( vchiq_core_log_level, "%s: bulks paused in " "unexpected state %s", __func__, conn_state_names[ state->conn_state]); } else if (state->conn_state == VCHIQ_CONNSTATE_CONNECTED) { DEBUG_TRACE(PARSE_LINE); resolved = resolve_bulks(service, queue); } lmutex_unlock(&service->bulk_mutex); if (resolved) notify_bulks(service, queue, 1/*retry_poll*/); } } break; case VCHIQ_MSG_BULK_RX_DONE: case VCHIQ_MSG_BULK_TX_DONE: WARN_ON(state->is_master); if ((service->remoteport == remoteport) && (service->srvstate != VCHIQ_SRVSTATE_FREE)) { VCHIQ_BULK_QUEUE_T *queue; VCHIQ_BULK_T *bulk; queue = (type == VCHIQ_MSG_BULK_RX_DONE) ? &service->bulk_rx : &service->bulk_tx; DEBUG_TRACE(PARSE_LINE); if (lmutex_lock_interruptible( &service->bulk_mutex) != 0) { DEBUG_TRACE(PARSE_LINE); goto bail_not_ready; } if ((int)(queue->remote_insert - queue->local_insert) >= 0) { vchiq_log_error(vchiq_core_log_level, "%d: prs %s@%x (%d->%d) " "unexpected (ri=%d,li=%d)", state->id, msg_type_str(type), (unsigned int)header, remoteport, localport, queue->remote_insert, queue->local_insert); lmutex_unlock(&service->bulk_mutex); break; } BUG_ON(queue->process == queue->local_insert); BUG_ON(queue->process != queue->remote_insert); bulk = &queue->bulks[ BULK_INDEX(queue->remote_insert)]; bulk->actual = *(int *)header->data; queue->remote_insert++; vchiq_log_info(vchiq_core_log_level, "%d: prs %s@%x (%d->%d) %x@%x", state->id, msg_type_str(type), (unsigned int)header, remoteport, localport, bulk->actual, (unsigned int)bulk->data); vchiq_log_trace(vchiq_core_log_level, "%d: prs:%d %cx li=%x ri=%x p=%x", state->id, localport, (type == VCHIQ_MSG_BULK_RX_DONE) ? 'r' : 't', queue->local_insert, queue->remote_insert, queue->process); DEBUG_TRACE(PARSE_LINE); WARN_ON(queue->process == queue->local_insert); vchiq_complete_bulk(bulk); queue->process++; lmutex_unlock(&service->bulk_mutex); DEBUG_TRACE(PARSE_LINE); notify_bulks(service, queue, 1/*retry_poll*/); DEBUG_TRACE(PARSE_LINE); } break; case VCHIQ_MSG_PADDING: vchiq_log_trace(vchiq_core_log_level, "%d: prs PADDING@%x,%x", state->id, (unsigned int)header, size); break; case VCHIQ_MSG_PAUSE: /* If initiated, signal the application thread */ vchiq_log_trace(vchiq_core_log_level, "%d: prs PAUSE@%x,%x", state->id, (unsigned int)header, size); if (state->conn_state == VCHIQ_CONNSTATE_PAUSED) { vchiq_log_error(vchiq_core_log_level, "%d: PAUSE received in state PAUSED", state->id); break; } if (state->conn_state != VCHIQ_CONNSTATE_PAUSE_SENT) { /* Send a PAUSE in response */ if (queue_message(state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_PAUSE, 0, 0), NULL, 0, 0, 0) == VCHIQ_RETRY) goto bail_not_ready; if (state->is_master) pause_bulks(state); } /* At this point slot_mutex is held */ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSED); vchiq_platform_paused(state); break; case VCHIQ_MSG_RESUME: vchiq_log_trace(vchiq_core_log_level, "%d: prs RESUME@%x,%x", state->id, (unsigned int)header, size); /* Release the slot mutex */ lmutex_unlock(&state->slot_mutex); if (state->is_master) resume_bulks(state); vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED); vchiq_platform_resumed(state); break; case VCHIQ_MSG_REMOTE_USE: vchiq_on_remote_use(state); break; case VCHIQ_MSG_REMOTE_RELEASE: vchiq_on_remote_release(state); break; case VCHIQ_MSG_REMOTE_USE_ACTIVE: vchiq_on_remote_use_active(state); break; default: vchiq_log_error(vchiq_core_log_level, "%d: prs invalid msgid %x@%x,%x", state->id, msgid, (unsigned int)header, size); WARN(1, "invalid message\n"); break; } skip_message: if (service) { unlock_service(service); service = NULL; } state->rx_pos += calc_stride(size); DEBUG_TRACE(PARSE_LINE); /* Perform some housekeeping when the end of the slot is ** reached. */ if ((state->rx_pos & VCHIQ_SLOT_MASK) == 0) { /* Remove the extra reference count. */ release_slot(state, state->rx_info, NULL, NULL); state->rx_data = NULL; } } bail_not_ready: if (service) unlock_service(service); } /* Called by the slot handler thread */ int slot_handler_func(void *v); int slot_handler_func(void *v) { VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v; VCHIQ_SHARED_STATE_T *local = state->local; DEBUG_INITIALISE(local) while (1) { DEBUG_COUNT(SLOT_HANDLER_COUNT); DEBUG_TRACE(SLOT_HANDLER_LINE); remote_event_wait(&local->trigger); rmb(); DEBUG_TRACE(SLOT_HANDLER_LINE); if (state->poll_needed) { /* Check if we need to suspend - may change our * conn_state */ vchiq_platform_check_suspend(state); state->poll_needed = 0; /* Handle service polling and other rare conditions here ** out of the mainline code */ switch (state->conn_state) { case VCHIQ_CONNSTATE_CONNECTED: /* Poll the services as requested */ poll_services(state); break; case VCHIQ_CONNSTATE_PAUSING: if (state->is_master) pause_bulks(state); if (queue_message(state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_PAUSE, 0, 0), NULL, 0, 0, 0) != VCHIQ_RETRY) { vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSE_SENT); } else { if (state->is_master) resume_bulks(state); /* Retry later */ state->poll_needed = 1; } break; case VCHIQ_CONNSTATE_PAUSED: vchiq_platform_resume(state); break; case VCHIQ_CONNSTATE_RESUMING: if (queue_message(state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_RESUME, 0, 0), NULL, 0, 0, 0) != VCHIQ_RETRY) { if (state->is_master) resume_bulks(state); vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED); vchiq_platform_resumed(state); } else { /* This should really be impossible, ** since the PAUSE should have flushed ** through outstanding messages. */ vchiq_log_error(vchiq_core_log_level, "Failed to send RESUME " "message"); BUG(); } break; case VCHIQ_CONNSTATE_PAUSE_TIMEOUT: case VCHIQ_CONNSTATE_RESUME_TIMEOUT: vchiq_platform_handle_timeout(state); break; default: break; } } DEBUG_TRACE(SLOT_HANDLER_LINE); parse_rx_slots(state); } return 0; } /* Called by the recycle thread */ int recycle_func(void *v); int recycle_func(void *v) { VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v; VCHIQ_SHARED_STATE_T *local = state->local; while (1) { remote_event_wait(&local->recycle); process_free_queue(state); } return 0; } /* Called by the sync thread */ int sync_func(void *v); int sync_func(void *v) { VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v; VCHIQ_SHARED_STATE_T *local = state->local; VCHIQ_HEADER_T *header = (VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state, state->remote->slot_sync); while (1) { VCHIQ_SERVICE_T *service; int msgid, size; int type; unsigned int localport, remoteport; remote_event_wait(&local->sync_trigger); rmb(); msgid = header->msgid; size = header->size; type = VCHIQ_MSG_TYPE(msgid); localport = VCHIQ_MSG_DSTPORT(msgid); remoteport = VCHIQ_MSG_SRCPORT(msgid); service = find_service_by_port(state, localport); if (!service) { vchiq_log_error(vchiq_sync_log_level, "%d: sf %s@%x (%d->%d) - " "invalid/closed service %d", state->id, msg_type_str(type), (unsigned int)header, remoteport, localport, localport); release_message_sync(state, header); continue; } if (vchiq_sync_log_level >= VCHIQ_LOG_TRACE) { int svc_fourcc; svc_fourcc = service ? service->base.fourcc : VCHIQ_MAKE_FOURCC('?', '?', '?', '?'); vchiq_log_trace(vchiq_sync_log_level, "Rcvd Msg %s from %c%c%c%c s:%d d:%d len:%d", msg_type_str(type), VCHIQ_FOURCC_AS_4CHARS(svc_fourcc), remoteport, localport, size); if (size > 0) vchiq_log_dump_mem("Rcvd", 0, header->data, min(64, size)); } switch (type) { case VCHIQ_MSG_OPENACK: if (size >= sizeof(struct vchiq_openack_payload)) { const struct vchiq_openack_payload *payload = (struct vchiq_openack_payload *) header->data; service->peer_version = payload->version; } vchiq_log_info(vchiq_sync_log_level, "%d: sf OPENACK@%x,%x (%d->%d) v:%d", state->id, (unsigned int)header, size, remoteport, localport, service->peer_version); if (service->srvstate == VCHIQ_SRVSTATE_OPENING) { service->remoteport = remoteport; vchiq_set_service_state(service, VCHIQ_SRVSTATE_OPENSYNC); up(&service->remove_event); } release_message_sync(state, header); break; case VCHIQ_MSG_DATA: vchiq_log_trace(vchiq_sync_log_level, "%d: sf DATA@%x,%x (%d->%d)", state->id, (unsigned int)header, size, remoteport, localport); if ((service->remoteport == remoteport) && (service->srvstate == VCHIQ_SRVSTATE_OPENSYNC)) { if (make_service_callback(service, VCHIQ_MESSAGE_AVAILABLE, header, NULL) == VCHIQ_RETRY) vchiq_log_error(vchiq_sync_log_level, "synchronous callback to " "service %d returns " "VCHIQ_RETRY", localport); } break; default: vchiq_log_error(vchiq_sync_log_level, "%d: sf unexpected msgid %x@%x,%x", state->id, msgid, (unsigned int)header, size); release_message_sync(state, header); break; } unlock_service(service); } return 0; } static void init_bulk_queue(VCHIQ_BULK_QUEUE_T *queue) { queue->local_insert = 0; queue->remote_insert = 0; queue->process = 0; queue->remote_notify = 0; queue->remove = 0; } inline const char * get_conn_state_name(VCHIQ_CONNSTATE_T conn_state) { return conn_state_names[conn_state]; } VCHIQ_SLOT_ZERO_T * vchiq_init_slots(void *mem_base, int mem_size) { int mem_align = (VCHIQ_SLOT_SIZE - (int)mem_base) & VCHIQ_SLOT_MASK; VCHIQ_SLOT_ZERO_T *slot_zero = (VCHIQ_SLOT_ZERO_T *)((char *)mem_base + mem_align); int num_slots = (mem_size - mem_align)/VCHIQ_SLOT_SIZE; int first_data_slot = VCHIQ_SLOT_ZERO_SLOTS; /* Ensure there is enough memory to run an absolutely minimum system */ num_slots -= first_data_slot; if (num_slots < 4) { vchiq_log_error(vchiq_core_log_level, "vchiq_init_slots - insufficient memory %x bytes", mem_size); return NULL; } memset(slot_zero, 0, sizeof(VCHIQ_SLOT_ZERO_T)); slot_zero->magic = VCHIQ_MAGIC; slot_zero->version = VCHIQ_VERSION; slot_zero->version_min = VCHIQ_VERSION_MIN; slot_zero->slot_zero_size = sizeof(VCHIQ_SLOT_ZERO_T); slot_zero->slot_size = VCHIQ_SLOT_SIZE; slot_zero->max_slots = VCHIQ_MAX_SLOTS; slot_zero->max_slots_per_side = VCHIQ_MAX_SLOTS_PER_SIDE; slot_zero->master.slot_sync = first_data_slot; slot_zero->master.slot_first = first_data_slot + 1; slot_zero->master.slot_last = first_data_slot + (num_slots/2) - 1; slot_zero->slave.slot_sync = first_data_slot + (num_slots/2); slot_zero->slave.slot_first = first_data_slot + (num_slots/2) + 1; slot_zero->slave.slot_last = first_data_slot + num_slots - 1; return slot_zero; } VCHIQ_STATUS_T vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero, int is_master) { VCHIQ_SHARED_STATE_T *local; VCHIQ_SHARED_STATE_T *remote; VCHIQ_STATUS_T status; char threadname[10]; static int id; int i; /* Check the input configuration */ if (slot_zero->magic != VCHIQ_MAGIC) { vchiq_loud_error_header(); vchiq_loud_error("Invalid VCHIQ magic value found."); vchiq_loud_error("slot_zero=%x: magic=%x (expected %x)", (unsigned int)slot_zero, slot_zero->magic, VCHIQ_MAGIC); vchiq_loud_error_footer(); return VCHIQ_ERROR; } vchiq_log_warning(vchiq_core_log_level, "local ver %d (min %d), remote ver %d.", VCHIQ_VERSION, VCHIQ_VERSION_MIN, slot_zero->version); if (slot_zero->version < VCHIQ_VERSION_MIN) { vchiq_loud_error_header(); vchiq_loud_error("Incompatible VCHIQ versions found."); vchiq_loud_error("slot_zero=%x: VideoCore version=%d " "(minimum %d)", (unsigned int)slot_zero, slot_zero->version, VCHIQ_VERSION_MIN); vchiq_loud_error("Restart with a newer VideoCore image."); vchiq_loud_error_footer(); return VCHIQ_ERROR; } if (VCHIQ_VERSION < slot_zero->version_min) { vchiq_loud_error_header(); vchiq_loud_error("Incompatible VCHIQ versions found."); vchiq_loud_error("slot_zero=%x: version=%d (VideoCore " "minimum %d)", (unsigned int)slot_zero, VCHIQ_VERSION, slot_zero->version_min); vchiq_loud_error("Restart with a newer kernel."); vchiq_loud_error_footer(); return VCHIQ_ERROR; } if ((slot_zero->slot_zero_size != sizeof(VCHIQ_SLOT_ZERO_T)) || (slot_zero->slot_size != VCHIQ_SLOT_SIZE) || (slot_zero->max_slots != VCHIQ_MAX_SLOTS) || (slot_zero->max_slots_per_side != VCHIQ_MAX_SLOTS_PER_SIDE)) { vchiq_loud_error_header(); if (slot_zero->slot_zero_size != sizeof(VCHIQ_SLOT_ZERO_T)) vchiq_loud_error("slot_zero=%x: slot_zero_size=%x " "(expected %zx)", (unsigned int)slot_zero, slot_zero->slot_zero_size, sizeof(VCHIQ_SLOT_ZERO_T)); if (slot_zero->slot_size != VCHIQ_SLOT_SIZE) vchiq_loud_error("slot_zero=%x: slot_size=%d " "(expected %d", (unsigned int)slot_zero, slot_zero->slot_size, VCHIQ_SLOT_SIZE); if (slot_zero->max_slots != VCHIQ_MAX_SLOTS) vchiq_loud_error("slot_zero=%x: max_slots=%d " "(expected %d)", (unsigned int)slot_zero, slot_zero->max_slots, VCHIQ_MAX_SLOTS); if (slot_zero->max_slots_per_side != VCHIQ_MAX_SLOTS_PER_SIDE) vchiq_loud_error("slot_zero=%x: max_slots_per_side=%d " "(expected %d)", (unsigned int)slot_zero, slot_zero->max_slots_per_side, VCHIQ_MAX_SLOTS_PER_SIDE); vchiq_loud_error_footer(); return VCHIQ_ERROR; } if (is_master) { local = &slot_zero->master; remote = &slot_zero->slave; } else { local = &slot_zero->slave; remote = &slot_zero->master; } if (local->initialised) { vchiq_loud_error_header(); if (remote->initialised) vchiq_loud_error("local state has already been " "initialised"); else vchiq_loud_error("master/slave mismatch - two %ss", is_master ? "master" : "slave"); vchiq_loud_error_footer(); return VCHIQ_ERROR; } memset(state, 0, sizeof(VCHIQ_STATE_T)); state->id = id++; state->is_master = is_master; /* initialize shared state pointers */ state->local = local; state->remote = remote; state->slot_data = (VCHIQ_SLOT_T *)slot_zero; /* initialize events and mutexes */ _sema_init(&state->connect, 0); lmutex_init(&state->mutex); _sema_init(&state->trigger_event, 0); _sema_init(&state->recycle_event, 0); _sema_init(&state->sync_trigger_event, 0); _sema_init(&state->sync_release_event, 0); lmutex_init(&state->slot_mutex); lmutex_init(&state->recycle_mutex); lmutex_init(&state->sync_mutex); lmutex_init(&state->bulk_transfer_mutex); _sema_init(&state->slot_available_event, 0); _sema_init(&state->slot_remove_event, 0); _sema_init(&state->data_quota_event, 0); state->slot_queue_available = 0; for (i = 0; i < VCHIQ_MAX_SERVICES; i++) { VCHIQ_SERVICE_QUOTA_T *service_quota = &state->service_quotas[i]; _sema_init(&service_quota->quota_event, 0); } for (i = local->slot_first; i <= local->slot_last; i++) { local->slot_queue[state->slot_queue_available++] = i; up(&state->slot_available_event); } state->default_slot_quota = state->slot_queue_available/2; state->default_message_quota = min((unsigned short)(state->default_slot_quota * 256), (unsigned short)~0); state->previous_data_index = -1; state->data_use_count = 0; state->data_quota = state->slot_queue_available - 1; local->trigger.event = &state->trigger_event; remote_event_create(&local->trigger); local->tx_pos = 0; local->recycle.event = &state->recycle_event; remote_event_create(&local->recycle); local->slot_queue_recycle = state->slot_queue_available; local->sync_trigger.event = &state->sync_trigger_event; remote_event_create(&local->sync_trigger); local->sync_release.event = &state->sync_release_event; remote_event_create(&local->sync_release); /* At start-of-day, the slot is empty and available */ ((VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state, local->slot_sync))->msgid = VCHIQ_MSGID_PADDING; remote_event_signal_local(&local->sync_release); local->debug[DEBUG_ENTRIES] = DEBUG_MAX; status = vchiq_platform_init_state(state); /* bring up slot handler thread */ snprintf(threadname, sizeof(threadname), "VCHIQ-%d", state->id); state->slot_handler_thread = vchiq_thread_create(&slot_handler_func, (void *)state, threadname); if (state->slot_handler_thread == NULL) { vchiq_loud_error_header(); vchiq_loud_error("couldn't create thread %s", threadname); vchiq_loud_error_footer(); return VCHIQ_ERROR; } set_user_nice(state->slot_handler_thread, -19); wake_up_process(state->slot_handler_thread); snprintf(threadname, sizeof(threadname), "VCHIQr-%d", state->id); state->recycle_thread = vchiq_thread_create(&recycle_func, (void *)state, threadname); if (state->recycle_thread == NULL) { vchiq_loud_error_header(); vchiq_loud_error("couldn't create thread %s", threadname); vchiq_loud_error_footer(); return VCHIQ_ERROR; } set_user_nice(state->recycle_thread, -19); wake_up_process(state->recycle_thread); snprintf(threadname, sizeof(threadname), "VCHIQs-%d", state->id); state->sync_thread = vchiq_thread_create(&sync_func, (void *)state, threadname); if (state->sync_thread == NULL) { vchiq_loud_error_header(); vchiq_loud_error("couldn't create thread %s", threadname); vchiq_loud_error_footer(); return VCHIQ_ERROR; } set_user_nice(state->sync_thread, -20); wake_up_process(state->sync_thread); BUG_ON(state->id >= VCHIQ_MAX_STATES); vchiq_states[state->id] = state; /* Indicate readiness to the other side */ local->initialised = 1; return status; } /* Called from application thread when a client or server service is created. */ VCHIQ_SERVICE_T * vchiq_add_service_internal(VCHIQ_STATE_T *state, const VCHIQ_SERVICE_PARAMS_T *params, int srvstate, VCHIQ_INSTANCE_T instance, VCHIQ_USERDATA_TERM_T userdata_term) { VCHIQ_SERVICE_T *service; service = kmalloc(sizeof(VCHIQ_SERVICE_T), GFP_KERNEL); if (service) { service->base.fourcc = params->fourcc; service->base.callback = params->callback; service->base.userdata = params->userdata; service->handle = VCHIQ_SERVICE_HANDLE_INVALID; service->ref_count = 1; service->srvstate = VCHIQ_SRVSTATE_FREE; service->userdata_term = userdata_term; service->localport = VCHIQ_PORT_FREE; service->remoteport = VCHIQ_PORT_FREE; service->public_fourcc = (srvstate == VCHIQ_SRVSTATE_OPENING) ? VCHIQ_FOURCC_INVALID : params->fourcc; service->client_id = 0; service->auto_close = 1; service->sync = 0; service->closing = 0; atomic_set(&service->poll_flags, 0); service->version = params->version; service->version_min = params->version_min; service->state = state; service->instance = instance; service->service_use_count = 0; init_bulk_queue(&service->bulk_tx); init_bulk_queue(&service->bulk_rx); _sema_init(&service->remove_event, 0); _sema_init(&service->bulk_remove_event, 0); lmutex_init(&service->bulk_mutex); memset(&service->stats, 0, sizeof(service->stats)); } else { vchiq_log_error(vchiq_core_log_level, "Out of memory"); } if (service) { VCHIQ_SERVICE_T **pservice = NULL; int i; /* Although it is perfectly possible to use service_spinlock ** to protect the creation of services, it is overkill as it ** disables interrupts while the array is searched. ** The only danger is of another thread trying to create a ** service - service deletion is safe. ** Therefore it is preferable to use state->mutex which, ** although slower to claim, doesn't block interrupts while ** it is held. */ lmutex_lock(&state->mutex); /* Prepare to use a previously unused service */ if (state->unused_service < VCHIQ_MAX_SERVICES) pservice = &state->services[state->unused_service]; if (srvstate == VCHIQ_SRVSTATE_OPENING) { for (i = 0; i < state->unused_service; i++) { VCHIQ_SERVICE_T *srv = state->services[i]; if (!srv) { pservice = &state->services[i]; break; } } } else { for (i = (state->unused_service - 1); i >= 0; i--) { VCHIQ_SERVICE_T *srv = state->services[i]; if (!srv) pservice = &state->services[i]; else if ((srv->public_fourcc == params->fourcc) && ((srv->instance != instance) || (srv->base.callback != params->callback))) { /* There is another server using this ** fourcc which doesn't match. */ pservice = NULL; break; } } } if (pservice) { service->localport = (pservice - state->services); if (!handle_seq) handle_seq = VCHIQ_MAX_STATES * VCHIQ_MAX_SERVICES; service->handle = handle_seq | (state->id * VCHIQ_MAX_SERVICES) | service->localport; handle_seq += VCHIQ_MAX_STATES * VCHIQ_MAX_SERVICES; *pservice = service; if (pservice == &state->services[state->unused_service]) state->unused_service++; } lmutex_unlock(&state->mutex); if (!pservice) { _sema_destroy(&service->remove_event); _sema_destroy(&service->bulk_remove_event); lmutex_destroy(&service->bulk_mutex); kfree(service); service = NULL; } } if (service) { VCHIQ_SERVICE_QUOTA_T *service_quota = &state->service_quotas[service->localport]; service_quota->slot_quota = state->default_slot_quota; service_quota->message_quota = state->default_message_quota; if (service_quota->slot_use_count == 0) service_quota->previous_tx_index = SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos) - 1; /* Bring this service online */ vchiq_set_service_state(service, srvstate); vchiq_log_info(vchiq_core_msg_log_level, "%s Service %c%c%c%c SrcPort:%d", (srvstate == VCHIQ_SRVSTATE_OPENING) ? "Open" : "Add", VCHIQ_FOURCC_AS_4CHARS(params->fourcc), service->localport); } /* Don't unlock the service - leave it with a ref_count of 1. */ return service; } VCHIQ_STATUS_T vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id) { struct vchiq_open_payload payload = { service->base.fourcc, client_id, service->version, service->version_min }; VCHIQ_ELEMENT_T body = { &payload, sizeof(payload) }; VCHIQ_STATUS_T status = VCHIQ_SUCCESS; service->client_id = client_id; vchiq_use_service_internal(service); status = queue_message(service->state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_OPEN, service->localport, 0), &body, 1, sizeof(payload), 1); if (status == VCHIQ_SUCCESS) { if (down_interruptible(&service->remove_event) != 0) { status = VCHIQ_RETRY; vchiq_release_service_internal(service); } else if ((service->srvstate != VCHIQ_SRVSTATE_OPEN) && (service->srvstate != VCHIQ_SRVSTATE_OPENSYNC)) { if (service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT) vchiq_log_error(vchiq_core_log_level, "%d: osi - srvstate = %s (ref %d)", service->state->id, srvstate_names[service->srvstate], service->ref_count); status = VCHIQ_ERROR; VCHIQ_SERVICE_STATS_INC(service, error_count); vchiq_release_service_internal(service); } } return status; } static void release_service_messages(VCHIQ_SERVICE_T *service) { VCHIQ_STATE_T *state = service->state; int slot_last = state->remote->slot_last; int i; /* Release any claimed messages */ for (i = state->remote->slot_first; i <= slot_last; i++) { VCHIQ_SLOT_INFO_T *slot_info = SLOT_INFO_FROM_INDEX(state, i); if (slot_info->release_count != slot_info->use_count) { char *data = (char *)SLOT_DATA_FROM_INDEX(state, i); unsigned int pos, end; end = VCHIQ_SLOT_SIZE; if (data == state->rx_data) /* This buffer is still being read from - stop ** at the current read position */ end = state->rx_pos & VCHIQ_SLOT_MASK; pos = 0; while (pos < end) { VCHIQ_HEADER_T *header = (VCHIQ_HEADER_T *)(data + pos); int msgid = header->msgid; int port = VCHIQ_MSG_DSTPORT(msgid); if ((port == service->localport) && (msgid & VCHIQ_MSGID_CLAIMED)) { vchiq_log_info(vchiq_core_log_level, " fsi - hdr %x", (unsigned int)header); release_slot(state, slot_info, header, NULL); } pos += calc_stride(header->size); if (pos > VCHIQ_SLOT_SIZE) { vchiq_log_error(vchiq_core_log_level, "fsi - pos %x: header %x, " "msgid %x, header->msgid %x, " "header->size %x", pos, (unsigned int)header, msgid, header->msgid, header->size); WARN(1, "invalid slot position\n"); } } } } } static int do_abort_bulks(VCHIQ_SERVICE_T *service) { VCHIQ_STATUS_T status; /* Abort any outstanding bulk transfers */ if (lmutex_lock_interruptible(&service->bulk_mutex) != 0) return 0; abort_outstanding_bulks(service, &service->bulk_tx); abort_outstanding_bulks(service, &service->bulk_rx); lmutex_unlock(&service->bulk_mutex); status = notify_bulks(service, &service->bulk_tx, 0/*!retry_poll*/); if (status == VCHIQ_SUCCESS) status = notify_bulks(service, &service->bulk_rx, 0/*!retry_poll*/); return (status == VCHIQ_SUCCESS); } static VCHIQ_STATUS_T close_service_complete(VCHIQ_SERVICE_T *service, int failstate) { VCHIQ_STATUS_T status; int is_server = (service->public_fourcc != VCHIQ_FOURCC_INVALID); int newstate; switch (service->srvstate) { case VCHIQ_SRVSTATE_OPEN: case VCHIQ_SRVSTATE_CLOSESENT: case VCHIQ_SRVSTATE_CLOSERECVD: if (is_server) { if (service->auto_close) { service->client_id = 0; service->remoteport = VCHIQ_PORT_FREE; newstate = VCHIQ_SRVSTATE_LISTENING; } else newstate = VCHIQ_SRVSTATE_CLOSEWAIT; } else newstate = VCHIQ_SRVSTATE_CLOSED; vchiq_set_service_state(service, newstate); break; case VCHIQ_SRVSTATE_LISTENING: break; default: vchiq_log_error(vchiq_core_log_level, "close_service_complete(%x) called in state %s", service->handle, srvstate_names[service->srvstate]); WARN(1, "close_service_complete in unexpected state\n"); return VCHIQ_ERROR; } status = make_service_callback(service, VCHIQ_SERVICE_CLOSED, NULL, NULL); if (status != VCHIQ_RETRY) { int uc = service->service_use_count; int i; /* Complete the close process */ for (i = 0; i < uc; i++) /* cater for cases where close is forced and the ** client may not close all it's handles */ vchiq_release_service_internal(service); service->client_id = 0; service->remoteport = VCHIQ_PORT_FREE; if (service->srvstate == VCHIQ_SRVSTATE_CLOSED) vchiq_free_service_internal(service); else if (service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT) { if (is_server) service->closing = 0; up(&service->remove_event); } } else vchiq_set_service_state(service, failstate); return status; } /* Called by the slot handler */ VCHIQ_STATUS_T vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd) { VCHIQ_STATE_T *state = service->state; VCHIQ_STATUS_T status = VCHIQ_SUCCESS; int is_server = (service->public_fourcc != VCHIQ_FOURCC_INVALID); vchiq_log_info(vchiq_core_log_level, "%d: csi:%d,%d (%s)", service->state->id, service->localport, close_recvd, srvstate_names[service->srvstate]); switch (service->srvstate) { case VCHIQ_SRVSTATE_CLOSED: case VCHIQ_SRVSTATE_HIDDEN: case VCHIQ_SRVSTATE_LISTENING: case VCHIQ_SRVSTATE_CLOSEWAIT: if (close_recvd) vchiq_log_error(vchiq_core_log_level, "vchiq_close_service_internal(1) called " "in state %s", srvstate_names[service->srvstate]); else if (is_server) { if (service->srvstate == VCHIQ_SRVSTATE_LISTENING) { status = VCHIQ_ERROR; } else { service->client_id = 0; service->remoteport = VCHIQ_PORT_FREE; if (service->srvstate == VCHIQ_SRVSTATE_CLOSEWAIT) vchiq_set_service_state(service, VCHIQ_SRVSTATE_LISTENING); } up(&service->remove_event); } else vchiq_free_service_internal(service); break; case VCHIQ_SRVSTATE_OPENING: if (close_recvd) { /* The open was rejected - tell the user */ vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSEWAIT); up(&service->remove_event); } else { /* Shutdown mid-open - let the other side know */ status = queue_message(state, service, VCHIQ_MAKE_MSG (VCHIQ_MSG_CLOSE, service->localport, VCHIQ_MSG_DSTPORT(service->remoteport)), NULL, 0, 0, 0); } break; case VCHIQ_SRVSTATE_OPENSYNC: lmutex_lock(&state->sync_mutex); /* Drop through */ case VCHIQ_SRVSTATE_OPEN: if (state->is_master || close_recvd) { if (!do_abort_bulks(service)) status = VCHIQ_RETRY; } release_service_messages(service); if (status == VCHIQ_SUCCESS) status = queue_message(state, service, VCHIQ_MAKE_MSG (VCHIQ_MSG_CLOSE, service->localport, VCHIQ_MSG_DSTPORT(service->remoteport)), NULL, 0, 0, 0); if (status == VCHIQ_SUCCESS) { if (!close_recvd) break; } else if (service->srvstate == VCHIQ_SRVSTATE_OPENSYNC) { lmutex_unlock(&state->sync_mutex); break; } else break; status = close_service_complete(service, VCHIQ_SRVSTATE_CLOSERECVD); break; case VCHIQ_SRVSTATE_CLOSESENT: if (!close_recvd) /* This happens when a process is killed mid-close */ break; if (!state->is_master) { if (!do_abort_bulks(service)) { status = VCHIQ_RETRY; break; } } if (status == VCHIQ_SUCCESS) status = close_service_complete(service, VCHIQ_SRVSTATE_CLOSERECVD); break; case VCHIQ_SRVSTATE_CLOSERECVD: if (!close_recvd && is_server) /* Force into LISTENING mode */ vchiq_set_service_state(service, VCHIQ_SRVSTATE_LISTENING); status = close_service_complete(service, VCHIQ_SRVSTATE_CLOSERECVD); break; default: vchiq_log_error(vchiq_core_log_level, "vchiq_close_service_internal(%d) called in state %s", close_recvd, srvstate_names[service->srvstate]); break; } return status; } /* Called from the application process upon process death */ void vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service) { VCHIQ_STATE_T *state = service->state; vchiq_log_info(vchiq_core_log_level, "%d: tsi - (%d<->%d)", state->id, service->localport, service->remoteport); mark_service_closing(service); /* Mark the service for removal by the slot handler */ request_poll(state, service, VCHIQ_POLL_REMOVE); } /* Called from the slot handler */ void vchiq_free_service_internal(VCHIQ_SERVICE_T *service) { VCHIQ_STATE_T *state = service->state; vchiq_log_info(vchiq_core_log_level, "%d: fsi - (%d)", state->id, service->localport); switch (service->srvstate) { case VCHIQ_SRVSTATE_OPENING: case VCHIQ_SRVSTATE_CLOSED: case VCHIQ_SRVSTATE_HIDDEN: case VCHIQ_SRVSTATE_LISTENING: case VCHIQ_SRVSTATE_CLOSEWAIT: break; default: vchiq_log_error(vchiq_core_log_level, "%d: fsi - (%d) in state %s", state->id, service->localport, srvstate_names[service->srvstate]); return; } vchiq_set_service_state(service, VCHIQ_SRVSTATE_FREE); up(&service->remove_event); /* Release the initial lock */ unlock_service(service); } VCHIQ_STATUS_T vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance) { VCHIQ_SERVICE_T *service; int i; /* Find all services registered to this client and enable them. */ i = 0; while ((service = next_service_by_instance(state, instance, &i)) != NULL) { if (service->srvstate == VCHIQ_SRVSTATE_HIDDEN) vchiq_set_service_state(service, VCHIQ_SRVSTATE_LISTENING); unlock_service(service); } if (state->conn_state == VCHIQ_CONNSTATE_DISCONNECTED) { if (queue_message(state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_CONNECT, 0, 0), NULL, 0, 0, 1) == VCHIQ_RETRY) return VCHIQ_RETRY; vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTING); } if (state->conn_state == VCHIQ_CONNSTATE_CONNECTING) { if (down_interruptible(&state->connect) != 0) return VCHIQ_RETRY; vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED); up(&state->connect); } return VCHIQ_SUCCESS; } VCHIQ_STATUS_T vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance) { VCHIQ_SERVICE_T *service; int i; /* Find all services registered to this client and enable them. */ i = 0; while ((service = next_service_by_instance(state, instance, &i)) != NULL) { (void)vchiq_remove_service(service->handle); unlock_service(service); } return VCHIQ_SUCCESS; } VCHIQ_STATUS_T vchiq_pause_internal(VCHIQ_STATE_T *state) { VCHIQ_STATUS_T status = VCHIQ_SUCCESS; switch (state->conn_state) { case VCHIQ_CONNSTATE_CONNECTED: /* Request a pause */ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSING); request_poll(state, NULL, 0); break; default: vchiq_log_error(vchiq_core_log_level, "vchiq_pause_internal in state %s\n", conn_state_names[state->conn_state]); status = VCHIQ_ERROR; VCHIQ_STATS_INC(state, error_count); break; } return status; } VCHIQ_STATUS_T vchiq_resume_internal(VCHIQ_STATE_T *state) { VCHIQ_STATUS_T status = VCHIQ_SUCCESS; if (state->conn_state == VCHIQ_CONNSTATE_PAUSED) { vchiq_set_conn_state(state, VCHIQ_CONNSTATE_RESUMING); request_poll(state, NULL, 0); } else { status = VCHIQ_ERROR; VCHIQ_STATS_INC(state, error_count); } return status; } VCHIQ_STATUS_T vchiq_close_service(VCHIQ_SERVICE_HANDLE_T handle) { /* Unregister the service */ VCHIQ_SERVICE_T *service = find_service_by_handle(handle); VCHIQ_STATUS_T status = VCHIQ_SUCCESS; if (!service) return VCHIQ_ERROR; vchiq_log_info(vchiq_core_log_level, "%d: close_service:%d", service->state->id, service->localport); if ((service->srvstate == VCHIQ_SRVSTATE_FREE) || (service->srvstate == VCHIQ_SRVSTATE_LISTENING) || (service->srvstate == VCHIQ_SRVSTATE_HIDDEN)) { unlock_service(service); return VCHIQ_ERROR; } mark_service_closing(service); if (current == service->state->slot_handler_thread) { status = vchiq_close_service_internal(service, 0/*!close_recvd*/); BUG_ON(status == VCHIQ_RETRY); } else { /* Mark the service for termination by the slot handler */ request_poll(service->state, service, VCHIQ_POLL_TERMINATE); } while (1) { if (down_interruptible(&service->remove_event) != 0) { status = VCHIQ_RETRY; break; } if ((service->srvstate == VCHIQ_SRVSTATE_FREE) || (service->srvstate == VCHIQ_SRVSTATE_LISTENING) || (service->srvstate == VCHIQ_SRVSTATE_OPEN)) break; vchiq_log_warning(vchiq_core_log_level, "%d: close_service:%d - waiting in state %s", service->state->id, service->localport, srvstate_names[service->srvstate]); } if ((status == VCHIQ_SUCCESS) && (service->srvstate != VCHIQ_SRVSTATE_FREE) && (service->srvstate != VCHIQ_SRVSTATE_LISTENING)) status = VCHIQ_ERROR; unlock_service(service); return status; } VCHIQ_STATUS_T vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T handle) { /* Unregister the service */ VCHIQ_SERVICE_T *service = find_service_by_handle(handle); VCHIQ_STATUS_T status = VCHIQ_SUCCESS; if (!service) return VCHIQ_ERROR; vchiq_log_info(vchiq_core_log_level, "%d: remove_service:%d", service->state->id, service->localport); if (service->srvstate == VCHIQ_SRVSTATE_FREE) { unlock_service(service); return VCHIQ_ERROR; } mark_service_closing(service); if ((service->srvstate == VCHIQ_SRVSTATE_HIDDEN) || (current == service->state->slot_handler_thread)) { /* Make it look like a client, because it must be removed and not left in the LISTENING state. */ service->public_fourcc = VCHIQ_FOURCC_INVALID; status = vchiq_close_service_internal(service, 0/*!close_recvd*/); BUG_ON(status == VCHIQ_RETRY); } else { /* Mark the service for removal by the slot handler */ request_poll(service->state, service, VCHIQ_POLL_REMOVE); } while (1) { if (down_interruptible(&service->remove_event) != 0) { status = VCHIQ_RETRY; break; } if ((service->srvstate == VCHIQ_SRVSTATE_FREE) || (service->srvstate == VCHIQ_SRVSTATE_OPEN)) break; vchiq_log_warning(vchiq_core_log_level, "%d: remove_service:%d - waiting in state %s", service->state->id, service->localport, srvstate_names[service->srvstate]); } if ((status == VCHIQ_SUCCESS) && (service->srvstate != VCHIQ_SRVSTATE_FREE)) status = VCHIQ_ERROR; unlock_service(service); return status; } /* This function may be called by kernel threads or user threads. * User threads may receive VCHIQ_RETRY to indicate that a signal has been * received and the call should be retried after being returned to user * context. * When called in blocking mode, the userdata field points to a bulk_waiter * structure. */ VCHIQ_STATUS_T vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata, VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir) { VCHIQ_SERVICE_T *service = find_service_by_handle(handle); VCHIQ_BULK_QUEUE_T *queue; VCHIQ_BULK_T *bulk; VCHIQ_STATE_T *state; struct bulk_waiter *bulk_waiter = NULL; const char dir_char = (dir == VCHIQ_BULK_TRANSMIT) ? 't' : 'r'; const int dir_msgtype = (dir == VCHIQ_BULK_TRANSMIT) ? VCHIQ_MSG_BULK_TX : VCHIQ_MSG_BULK_RX; VCHIQ_STATUS_T status = VCHIQ_ERROR; if (!service || (service->srvstate != VCHIQ_SRVSTATE_OPEN) || ((memhandle == VCHI_MEM_HANDLE_INVALID) && (offset == NULL)) || (vchiq_check_service(service) != VCHIQ_SUCCESS)) goto error_exit; switch (mode) { case VCHIQ_BULK_MODE_NOCALLBACK: case VCHIQ_BULK_MODE_CALLBACK: break; case VCHIQ_BULK_MODE_BLOCKING: bulk_waiter = (struct bulk_waiter *)userdata; _sema_init(&bulk_waiter->event, 0); bulk_waiter->actual = 0; bulk_waiter->bulk = NULL; break; case VCHIQ_BULK_MODE_WAITING: bulk_waiter = (struct bulk_waiter *)userdata; bulk = bulk_waiter->bulk; goto waiting; default: goto error_exit; } state = service->state; queue = (dir == VCHIQ_BULK_TRANSMIT) ? &service->bulk_tx : &service->bulk_rx; if (lmutex_lock_interruptible(&service->bulk_mutex) != 0) { status = VCHIQ_RETRY; goto error_exit; } if (queue->local_insert == queue->remove + VCHIQ_NUM_SERVICE_BULKS) { VCHIQ_SERVICE_STATS_INC(service, bulk_stalls); do { lmutex_unlock(&service->bulk_mutex); if (down_interruptible(&service->bulk_remove_event) != 0) { status = VCHIQ_RETRY; goto error_exit; } if (lmutex_lock_interruptible(&service->bulk_mutex) != 0) { status = VCHIQ_RETRY; goto error_exit; } } while (queue->local_insert == queue->remove + VCHIQ_NUM_SERVICE_BULKS); } bulk = &queue->bulks[BULK_INDEX(queue->local_insert)]; bulk->mode = mode; bulk->dir = dir; bulk->userdata = userdata; bulk->size = size; bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED; if (vchiq_prepare_bulk_data(bulk, memhandle, offset, size, dir) != VCHIQ_SUCCESS) goto unlock_error_exit; wmb(); vchiq_log_info(vchiq_core_log_level, "%d: bt (%d->%d) %cx %x@%x %x", state->id, service->localport, service->remoteport, dir_char, size, (unsigned int)bulk->data, (unsigned int)userdata); if (state->is_master) { queue->local_insert++; if (resolve_bulks(service, queue)) request_poll(state, service, (dir == VCHIQ_BULK_TRANSMIT) ? VCHIQ_POLL_TXNOTIFY : VCHIQ_POLL_RXNOTIFY); } else { int payload[2] = { (int)bulk->data, bulk->size }; VCHIQ_ELEMENT_T element = { payload, sizeof(payload) }; status = queue_message(state, NULL, VCHIQ_MAKE_MSG(dir_msgtype, service->localport, service->remoteport), &element, 1, sizeof(payload), 1); if (status != VCHIQ_SUCCESS) { vchiq_complete_bulk(bulk); goto unlock_error_exit; } queue->local_insert++; } lmutex_unlock(&service->bulk_mutex); vchiq_log_trace(vchiq_core_log_level, "%d: bt:%d %cx li=%x ri=%x p=%x", state->id, service->localport, dir_char, queue->local_insert, queue->remote_insert, queue->process); waiting: unlock_service(service); status = VCHIQ_SUCCESS; if (bulk_waiter) { bulk_waiter->bulk = bulk; if (down_interruptible(&bulk_waiter->event) != 0) status = VCHIQ_RETRY; else if (bulk_waiter->actual == VCHIQ_BULK_ACTUAL_ABORTED) status = VCHIQ_ERROR; } return status; unlock_error_exit: lmutex_unlock(&service->bulk_mutex); error_exit: if (service) unlock_service(service); return status; } VCHIQ_STATUS_T vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T handle, const VCHIQ_ELEMENT_T *elements, unsigned int count) { VCHIQ_SERVICE_T *service = find_service_by_handle(handle); VCHIQ_STATUS_T status = VCHIQ_ERROR; unsigned int size = 0; unsigned int i; if (!service || (vchiq_check_service(service) != VCHIQ_SUCCESS)) goto error_exit; for (i = 0; i < (unsigned int)count; i++) { if (elements[i].size) { if (elements[i].data == NULL) { VCHIQ_SERVICE_STATS_INC(service, error_count); goto error_exit; } size += elements[i].size; } } if (size > VCHIQ_MAX_MSG_SIZE) { VCHIQ_SERVICE_STATS_INC(service, error_count); goto error_exit; } switch (service->srvstate) { case VCHIQ_SRVSTATE_OPEN: status = queue_message(service->state, service, VCHIQ_MAKE_MSG(VCHIQ_MSG_DATA, service->localport, service->remoteport), elements, count, size, 1); break; case VCHIQ_SRVSTATE_OPENSYNC: status = queue_message_sync(service->state, service, VCHIQ_MAKE_MSG(VCHIQ_MSG_DATA, service->localport, service->remoteport), elements, count, size, 1); break; default: status = VCHIQ_ERROR; break; } error_exit: if (service) unlock_service(service); return status; } void vchiq_release_message(VCHIQ_SERVICE_HANDLE_T handle, VCHIQ_HEADER_T *header) { VCHIQ_SERVICE_T *service = find_service_by_handle(handle); VCHIQ_SHARED_STATE_T *remote; VCHIQ_STATE_T *state; int slot_index; if (!service) return; state = service->state; remote = state->remote; slot_index = SLOT_INDEX_FROM_DATA(state, (void *)header); if ((slot_index >= remote->slot_first) && (slot_index <= remote->slot_last)) { int msgid = header->msgid; if (msgid & VCHIQ_MSGID_CLAIMED) { VCHIQ_SLOT_INFO_T *slot_info = SLOT_INFO_FROM_INDEX(state, slot_index); release_slot(state, slot_info, header, service); } } else if (slot_index == remote->slot_sync) release_message_sync(state, header); unlock_service(service); } static void release_message_sync(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header) { header->msgid = VCHIQ_MSGID_PADDING; wmb(); remote_event_signal(&state->remote->sync_release); } VCHIQ_STATUS_T vchiq_get_peer_version(VCHIQ_SERVICE_HANDLE_T handle, short *peer_version) { VCHIQ_STATUS_T status = VCHIQ_ERROR; VCHIQ_SERVICE_T *service = find_service_by_handle(handle); if (!service || (vchiq_check_service(service) != VCHIQ_SUCCESS) || !peer_version) goto exit; *peer_version = service->peer_version; status = VCHIQ_SUCCESS; exit: if (service) unlock_service(service); return status; } VCHIQ_STATUS_T vchiq_get_config(VCHIQ_INSTANCE_T instance, int config_size, VCHIQ_CONFIG_T *pconfig) { VCHIQ_CONFIG_T config; (void)instance; config.max_msg_size = VCHIQ_MAX_MSG_SIZE; config.bulk_threshold = VCHIQ_MAX_MSG_SIZE; config.max_outstanding_bulks = VCHIQ_NUM_SERVICE_BULKS; config.max_services = VCHIQ_MAX_SERVICES; config.version = VCHIQ_VERSION; config.version_min = VCHIQ_VERSION_MIN; if (config_size > sizeof(VCHIQ_CONFIG_T)) return VCHIQ_ERROR; memcpy(pconfig, &config, min(config_size, (int)(sizeof(VCHIQ_CONFIG_T)))); return VCHIQ_SUCCESS; } VCHIQ_STATUS_T vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T handle, VCHIQ_SERVICE_OPTION_T option, int value) { VCHIQ_SERVICE_T *service = find_service_by_handle(handle); VCHIQ_STATUS_T status = VCHIQ_ERROR; if (service) { switch (option) { case VCHIQ_SERVICE_OPTION_AUTOCLOSE: service->auto_close = value; status = VCHIQ_SUCCESS; break; case VCHIQ_SERVICE_OPTION_SLOT_QUOTA: { VCHIQ_SERVICE_QUOTA_T *service_quota = &service->state->service_quotas[ service->localport]; if (value == 0) value = service->state->default_slot_quota; if ((value >= service_quota->slot_use_count) && (value < (unsigned short)~0)) { service_quota->slot_quota = value; if ((value >= service_quota->slot_use_count) && (service_quota->message_quota >= service_quota->message_use_count)) { /* Signal the service that it may have ** dropped below its quota */ up(&service_quota->quota_event); } status = VCHIQ_SUCCESS; } } break; case VCHIQ_SERVICE_OPTION_MESSAGE_QUOTA: { VCHIQ_SERVICE_QUOTA_T *service_quota = &service->state->service_quotas[ service->localport]; if (value == 0) value = service->state->default_message_quota; if ((value >= service_quota->message_use_count) && (value < (unsigned short)~0)) { service_quota->message_quota = value; if ((value >= service_quota->message_use_count) && (service_quota->slot_quota >= service_quota->slot_use_count)) /* Signal the service that it may have ** dropped below its quota */ up(&service_quota->quota_event); status = VCHIQ_SUCCESS; } } break; case VCHIQ_SERVICE_OPTION_SYNCHRONOUS: if ((service->srvstate == VCHIQ_SRVSTATE_HIDDEN) || (service->srvstate == VCHIQ_SRVSTATE_LISTENING)) { service->sync = value; status = VCHIQ_SUCCESS; } break; default: break; } unlock_service(service); } return status; } static void vchiq_dump_shared_state(void *dump_context, VCHIQ_STATE_T *state, VCHIQ_SHARED_STATE_T *shared, const char *label) { static const char *const debug_names[] = { "", "SLOT_HANDLER_COUNT", "SLOT_HANDLER_LINE", "PARSE_LINE", "PARSE_HEADER", "PARSE_MSGID", "AWAIT_COMPLETION_LINE", "DEQUEUE_MESSAGE_LINE", "SERVICE_CALLBACK_LINE", "MSG_QUEUE_FULL_COUNT", "COMPLETION_QUEUE_FULL_COUNT" }; int i; char buf[80]; int len; len = snprintf(buf, sizeof(buf), " %s: slots %d-%d tx_pos=%x recycle=%x", label, shared->slot_first, shared->slot_last, shared->tx_pos, shared->slot_queue_recycle); vchiq_dump(dump_context, buf, len + 1); len = snprintf(buf, sizeof(buf), " Slots claimed:"); vchiq_dump(dump_context, buf, len + 1); for (i = shared->slot_first; i <= shared->slot_last; i++) { VCHIQ_SLOT_INFO_T slot_info = *SLOT_INFO_FROM_INDEX(state, i); if (slot_info.use_count != slot_info.release_count) { len = snprintf(buf, sizeof(buf), " %d: %d/%d", i, slot_info.use_count, slot_info.release_count); vchiq_dump(dump_context, buf, len + 1); } } for (i = 1; i < shared->debug[DEBUG_ENTRIES]; i++) { len = snprintf(buf, sizeof(buf), " DEBUG: %s = %d(%x)", debug_names[i], shared->debug[i], shared->debug[i]); vchiq_dump(dump_context, buf, len + 1); } } void vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state) { char buf[80]; int len; int i; len = snprintf(buf, sizeof(buf), "State %d: %s", state->id, conn_state_names[state->conn_state]); vchiq_dump(dump_context, buf, len + 1); len = snprintf(buf, sizeof(buf), " tx_pos=%x(@%x), rx_pos=%x(@%x)", state->local->tx_pos, (uint32_t)state->tx_data + (state->local_tx_pos & VCHIQ_SLOT_MASK), state->rx_pos, (uint32_t)state->rx_data + (state->rx_pos & VCHIQ_SLOT_MASK)); vchiq_dump(dump_context, buf, len + 1); len = snprintf(buf, sizeof(buf), " Version: %d (min %d)", VCHIQ_VERSION, VCHIQ_VERSION_MIN); vchiq_dump(dump_context, buf, len + 1); if (VCHIQ_ENABLE_STATS) { len = snprintf(buf, sizeof(buf), " Stats: ctrl_tx_count=%d, ctrl_rx_count=%d, " "error_count=%d", state->stats.ctrl_tx_count, state->stats.ctrl_rx_count, state->stats.error_count); vchiq_dump(dump_context, buf, len + 1); } len = snprintf(buf, sizeof(buf), " Slots: %d available (%d data), %d recyclable, %d stalls " "(%d data)", ((state->slot_queue_available * VCHIQ_SLOT_SIZE) - state->local_tx_pos) / VCHIQ_SLOT_SIZE, state->data_quota - state->data_use_count, state->local->slot_queue_recycle - state->slot_queue_available, state->stats.slot_stalls, state->stats.data_stalls); vchiq_dump(dump_context, buf, len + 1); vchiq_dump_platform_state(dump_context); vchiq_dump_shared_state(dump_context, state, state->local, "Local"); vchiq_dump_shared_state(dump_context, state, state->remote, "Remote"); vchiq_dump_platform_instances(dump_context); for (i = 0; i < state->unused_service; i++) { VCHIQ_SERVICE_T *service = find_service_by_port(state, i); if (service) { vchiq_dump_service_state(dump_context, service); unlock_service(service); } } } void vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service) { char buf[120]; int len; len = snprintf(buf, sizeof(buf), "Service %d: %s (ref %u)", service->localport, srvstate_names[service->srvstate], service->ref_count - 1); /*Don't include the lock just taken*/ if (service->srvstate != VCHIQ_SRVSTATE_FREE) { char remoteport[30]; VCHIQ_SERVICE_QUOTA_T *service_quota = &service->state->service_quotas[service->localport]; int fourcc = service->base.fourcc; int tx_pending, rx_pending; if (service->remoteport != VCHIQ_PORT_FREE) { int len2 = snprintf(remoteport, sizeof(remoteport), "%d", service->remoteport); if (service->public_fourcc != VCHIQ_FOURCC_INVALID) snprintf(remoteport + len2, sizeof(remoteport) - len2, " (client %8x)", service->client_id); } else strcpy(remoteport, "n/a"); len += snprintf(buf + len, sizeof(buf) - len, " '%c%c%c%c' remote %s (msg use %d/%d, slot use %d/%d)", VCHIQ_FOURCC_AS_4CHARS(fourcc), remoteport, service_quota->message_use_count, service_quota->message_quota, service_quota->slot_use_count, service_quota->slot_quota); vchiq_dump(dump_context, buf, len + 1); tx_pending = service->bulk_tx.local_insert - service->bulk_tx.remote_insert; rx_pending = service->bulk_rx.local_insert - service->bulk_rx.remote_insert; len = snprintf(buf, sizeof(buf), " Bulk: tx_pending=%d (size %d)," " rx_pending=%d (size %d)", tx_pending, tx_pending ? service->bulk_tx.bulks[ BULK_INDEX(service->bulk_tx.remove)].size : 0, rx_pending, rx_pending ? service->bulk_rx.bulks[ BULK_INDEX(service->bulk_rx.remove)].size : 0); if (VCHIQ_ENABLE_STATS) { vchiq_dump(dump_context, buf, len + 1); len = snprintf(buf, sizeof(buf), " Ctrl: tx_count=%d, tx_bytes=%llu, " "rx_count=%d, rx_bytes=%llu", service->stats.ctrl_tx_count, service->stats.ctrl_tx_bytes, service->stats.ctrl_rx_count, service->stats.ctrl_rx_bytes); vchiq_dump(dump_context, buf, len + 1); len = snprintf(buf, sizeof(buf), " Bulk: tx_count=%d, tx_bytes=%llu, " "rx_count=%d, rx_bytes=%llu", service->stats.bulk_tx_count, service->stats.bulk_tx_bytes, service->stats.bulk_rx_count, service->stats.bulk_rx_bytes); vchiq_dump(dump_context, buf, len + 1); len = snprintf(buf, sizeof(buf), " %d quota stalls, %d slot stalls, " "%d bulk stalls, %d aborted, %d errors", service->stats.quota_stalls, service->stats.slot_stalls, service->stats.bulk_stalls, service->stats.bulk_aborted_count, service->stats.error_count); } } vchiq_dump(dump_context, buf, len + 1); if (service->srvstate != VCHIQ_SRVSTATE_FREE) vchiq_dump_platform_service_state(dump_context, service); } void vchiq_loud_error_header(void) { vchiq_log_error(vchiq_core_log_level, "============================================================" "================"); vchiq_log_error(vchiq_core_log_level, "============================================================" "================"); vchiq_log_error(vchiq_core_log_level, "====="); } void vchiq_loud_error_footer(void) { vchiq_log_error(vchiq_core_log_level, "====="); vchiq_log_error(vchiq_core_log_level, "============================================================" "================"); vchiq_log_error(vchiq_core_log_level, "============================================================" "================"); } VCHIQ_STATUS_T vchiq_send_remote_use(VCHIQ_STATE_T *state) { VCHIQ_STATUS_T status = VCHIQ_RETRY; if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED) status = queue_message(state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_USE, 0, 0), NULL, 0, 0, 0); return status; } VCHIQ_STATUS_T vchiq_send_remote_release(VCHIQ_STATE_T *state) { VCHIQ_STATUS_T status = VCHIQ_RETRY; if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED) status = queue_message(state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_RELEASE, 0, 0), NULL, 0, 0, 0); return status; } VCHIQ_STATUS_T vchiq_send_remote_use_active(VCHIQ_STATE_T *state) { VCHIQ_STATUS_T status = VCHIQ_RETRY; if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED) status = queue_message(state, NULL, VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_USE_ACTIVE, 0, 0), NULL, 0, 0, 0); return status; } void vchiq_log_dump_mem(const char *label, uint32_t addr, const void *voidMem, size_t numBytes) { const uint8_t *mem = (const uint8_t *)voidMem; size_t offset; char lineBuf[100]; char *s; while (numBytes > 0) { s = lineBuf; for (offset = 0; offset < 16; offset++) { if (offset < numBytes) s += snprintf(s, 4, "%02x ", mem[offset]); else s += snprintf(s, 4, " "); } for (offset = 0; offset < 16; offset++) { if (offset < numBytes) { uint8_t ch = mem[offset]; if ((ch < ' ') || (ch > '~')) ch = '.'; *s++ = (char)ch; } } *s++ = '\0'; if ((label != NULL) && (*label != '\0')) vchiq_log_trace(VCHIQ_LOG_TRACE, "%s: %08x: %s", label, addr, lineBuf); else vchiq_log_trace(VCHIQ_LOG_TRACE, "%08x: %s", addr, lineBuf); addr += 16; mem += 16; if (numBytes > 16) numBytes -= 16; else numBytes = 0; } } CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_core.h 1004 1004 644 b4a7d1eface22e980513142d79ced82e 20537 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_CORE_H #define VCHIQ_CORE_H #include #include #include "vchiq_cfg.h" #include "vchiq.h" /* Run time control of log level, based on KERN_XXX level. */ #ifndef VCHIQ_LOG_DEFAULT #define VCHIQ_LOG_DEFAULT 4 #endif #define VCHIQ_LOG_ERROR 3 #define VCHIQ_LOG_WARNING 4 #define VCHIQ_LOG_INFO 6 #define VCHIQ_LOG_TRACE 7 #define VCHIQ_LOG_PREFIX "vchiq: " #ifndef vchiq_log_error #define vchiq_log_error(cat, fmt, ...) \ do { if (cat >= VCHIQ_LOG_ERROR) \ printf(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0) #endif #ifndef vchiq_log_warning #define vchiq_log_warning(cat, fmt, ...) \ do { if (cat >= VCHIQ_LOG_WARNING) \ printf(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0) #endif #ifndef vchiq_log_info #define vchiq_log_info(cat, fmt, ...) \ do { if (cat >= VCHIQ_LOG_INFO) \ printf(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0) #endif #ifndef vchiq_log_trace #define vchiq_log_trace(cat, fmt, ...) \ do { if (cat >= VCHIQ_LOG_TRACE) \ printf(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0) #endif #define vchiq_loud_error(...) \ vchiq_log_error(vchiq_core_log_level, "===== " __VA_ARGS__) #ifndef vchiq_static_assert #define vchiq_static_assert(cond) __attribute__((unused)) \ extern int vchiq_static_assert[(cond) ? 1 : -1] #endif #define IS_POW2(x) (x && ((x & (x - 1)) == 0)) /* Ensure that the slot size and maximum number of slots are powers of 2 */ vchiq_static_assert(IS_POW2(VCHIQ_SLOT_SIZE)); vchiq_static_assert(IS_POW2(VCHIQ_MAX_SLOTS)); vchiq_static_assert(IS_POW2(VCHIQ_MAX_SLOTS_PER_SIDE)); #define VCHIQ_SLOT_MASK (VCHIQ_SLOT_SIZE - 1) #define VCHIQ_SLOT_QUEUE_MASK (VCHIQ_MAX_SLOTS_PER_SIDE - 1) #define VCHIQ_SLOT_ZERO_SLOTS ((sizeof(VCHIQ_SLOT_ZERO_T) + \ VCHIQ_SLOT_SIZE - 1) / VCHIQ_SLOT_SIZE) #define VCHIQ_MSG_PADDING 0 /* - */ #define VCHIQ_MSG_CONNECT 1 /* - */ #define VCHIQ_MSG_OPEN 2 /* + (srcport, -), fourcc, client_id */ #define VCHIQ_MSG_OPENACK 3 /* + (srcport, dstport) */ #define VCHIQ_MSG_CLOSE 4 /* + (srcport, dstport) */ #define VCHIQ_MSG_DATA 5 /* + (srcport, dstport) */ #define VCHIQ_MSG_BULK_RX 6 /* + (srcport, dstport), data, size */ #define VCHIQ_MSG_BULK_TX 7 /* + (srcport, dstport), data, size */ #define VCHIQ_MSG_BULK_RX_DONE 8 /* + (srcport, dstport), actual */ #define VCHIQ_MSG_BULK_TX_DONE 9 /* + (srcport, dstport), actual */ #define VCHIQ_MSG_PAUSE 10 /* - */ #define VCHIQ_MSG_RESUME 11 /* - */ #define VCHIQ_MSG_REMOTE_USE 12 /* - */ #define VCHIQ_MSG_REMOTE_RELEASE 13 /* - */ #define VCHIQ_MSG_REMOTE_USE_ACTIVE 14 /* - */ #define VCHIQ_PORT_MAX (VCHIQ_MAX_SERVICES - 1) #define VCHIQ_PORT_FREE 0x1000 #define VCHIQ_PORT_IS_VALID(port) (port < VCHIQ_PORT_FREE) #define VCHIQ_MAKE_MSG(type, srcport, dstport) \ ((type<<24) | (srcport<<12) | (dstport<<0)) #define VCHIQ_MSG_TYPE(msgid) ((unsigned int)msgid >> 24) #define VCHIQ_MSG_SRCPORT(msgid) \ (unsigned short)(((unsigned int)msgid >> 12) & 0xfff) #define VCHIQ_MSG_DSTPORT(msgid) \ ((unsigned short)msgid & 0xfff) #define VCHIQ_FOURCC_AS_4CHARS(fourcc) \ ((fourcc) >> 24) & 0xff, \ ((fourcc) >> 16) & 0xff, \ ((fourcc) >> 8) & 0xff, \ (fourcc) & 0xff /* Ensure the fields are wide enough */ vchiq_static_assert(VCHIQ_MSG_SRCPORT(VCHIQ_MAKE_MSG(0, 0, VCHIQ_PORT_MAX)) == 0); vchiq_static_assert(VCHIQ_MSG_TYPE(VCHIQ_MAKE_MSG(0, VCHIQ_PORT_MAX, 0)) == 0); vchiq_static_assert((unsigned int)VCHIQ_PORT_MAX < (unsigned int)VCHIQ_PORT_FREE); #define VCHIQ_MSGID_PADDING VCHIQ_MAKE_MSG(VCHIQ_MSG_PADDING, 0, 0) #define VCHIQ_MSGID_CLAIMED 0x40000000 #define VCHIQ_FOURCC_INVALID 0x00000000 #define VCHIQ_FOURCC_IS_LEGAL(fourcc) (fourcc != VCHIQ_FOURCC_INVALID) #define VCHIQ_BULK_ACTUAL_ABORTED -1 typedef uint32_t BITSET_T; vchiq_static_assert((sizeof(BITSET_T) * 8) == 32); #define BITSET_SIZE(b) ((b + 31) >> 5) #define BITSET_WORD(b) (b >> 5) #define BITSET_BIT(b) (1 << (b & 31)) #define BITSET_ZERO(bs) memset(bs, 0, sizeof(bs)) #define BITSET_IS_SET(bs, b) (bs[BITSET_WORD(b)] & BITSET_BIT(b)) #define BITSET_SET(bs, b) (bs[BITSET_WORD(b)] |= BITSET_BIT(b)) #define BITSET_CLR(bs, b) (bs[BITSET_WORD(b)] &= ~BITSET_BIT(b)) #if VCHIQ_ENABLE_STATS #define VCHIQ_STATS_INC(state, stat) (state->stats. stat++) #define VCHIQ_SERVICE_STATS_INC(service, stat) (service->stats. stat++) #define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) \ (service->stats. stat += addend) #else #define VCHIQ_STATS_INC(state, stat) ((void)0) #define VCHIQ_SERVICE_STATS_INC(service, stat) ((void)0) #define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) ((void)0) #endif enum { DEBUG_ENTRIES, #if VCHIQ_ENABLE_DEBUG DEBUG_SLOT_HANDLER_COUNT, DEBUG_SLOT_HANDLER_LINE, DEBUG_PARSE_LINE, DEBUG_PARSE_HEADER, DEBUG_PARSE_MSGID, DEBUG_AWAIT_COMPLETION_LINE, DEBUG_DEQUEUE_MESSAGE_LINE, DEBUG_SERVICE_CALLBACK_LINE, DEBUG_MSG_QUEUE_FULL_COUNT, DEBUG_COMPLETION_QUEUE_FULL_COUNT, #endif DEBUG_MAX }; #if VCHIQ_ENABLE_DEBUG #define DEBUG_INITIALISE(local) int *debug_ptr = (local)->debug; #define DEBUG_TRACE(d) \ do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(); } while (0) #define DEBUG_VALUE(d, v) \ do { debug_ptr[DEBUG_ ## d] = (v); dsb(); } while (0) #define DEBUG_COUNT(d) \ do { debug_ptr[DEBUG_ ## d]++; dsb(); } while (0) #else /* VCHIQ_ENABLE_DEBUG */ #define DEBUG_INITIALISE(local) #define DEBUG_TRACE(d) #define DEBUG_VALUE(d, v) #define DEBUG_COUNT(d) #endif /* VCHIQ_ENABLE_DEBUG */ typedef enum { VCHIQ_CONNSTATE_DISCONNECTED, VCHIQ_CONNSTATE_CONNECTING, VCHIQ_CONNSTATE_CONNECTED, VCHIQ_CONNSTATE_PAUSING, VCHIQ_CONNSTATE_PAUSE_SENT, VCHIQ_CONNSTATE_PAUSED, VCHIQ_CONNSTATE_RESUMING, VCHIQ_CONNSTATE_PAUSE_TIMEOUT, VCHIQ_CONNSTATE_RESUME_TIMEOUT } VCHIQ_CONNSTATE_T; enum { VCHIQ_SRVSTATE_FREE, VCHIQ_SRVSTATE_HIDDEN, VCHIQ_SRVSTATE_LISTENING, VCHIQ_SRVSTATE_OPENING, VCHIQ_SRVSTATE_OPEN, VCHIQ_SRVSTATE_OPENSYNC, VCHIQ_SRVSTATE_CLOSESENT, VCHIQ_SRVSTATE_CLOSERECVD, VCHIQ_SRVSTATE_CLOSEWAIT, VCHIQ_SRVSTATE_CLOSED }; enum { VCHIQ_POLL_TERMINATE, VCHIQ_POLL_REMOVE, VCHIQ_POLL_TXNOTIFY, VCHIQ_POLL_RXNOTIFY, VCHIQ_POLL_COUNT }; typedef enum { VCHIQ_BULK_TRANSMIT, VCHIQ_BULK_RECEIVE } VCHIQ_BULK_DIR_T; typedef void (*VCHIQ_USERDATA_TERM_T)(void *userdata); typedef struct vchiq_bulk_struct { short mode; short dir; void *userdata; VCHI_MEM_HANDLE_T handle; void *data; int size; void *remote_data; int remote_size; int actual; } VCHIQ_BULK_T; typedef struct vchiq_bulk_queue_struct { int local_insert; /* Where to insert the next local bulk */ int remote_insert; /* Where to insert the next remote bulk (master) */ int process; /* Bulk to transfer next */ int remote_notify; /* Bulk to notify the remote client of next (mstr) */ int remove; /* Bulk to notify the local client of, and remove, ** next */ VCHIQ_BULK_T bulks[VCHIQ_NUM_SERVICE_BULKS]; } VCHIQ_BULK_QUEUE_T; typedef struct remote_event_struct { int armed; int fired; struct semaphore *event; } REMOTE_EVENT_T; typedef struct opaque_platform_state_t *VCHIQ_PLATFORM_STATE_T; typedef struct vchiq_state_struct VCHIQ_STATE_T; typedef struct vchiq_slot_struct { char data[VCHIQ_SLOT_SIZE]; } VCHIQ_SLOT_T; typedef struct vchiq_slot_info_struct { /* Use two counters rather than one to avoid the need for a mutex. */ short use_count; short release_count; } __packed VCHIQ_SLOT_INFO_T; /* XXXGONZO: check it */ typedef struct vchiq_service_struct { VCHIQ_SERVICE_BASE_T base; VCHIQ_SERVICE_HANDLE_T handle; unsigned int ref_count; int srvstate; VCHIQ_USERDATA_TERM_T userdata_term; unsigned int localport; unsigned int remoteport; int public_fourcc; int client_id; char auto_close; char sync; char closing; atomic_t poll_flags; short version; short version_min; short peer_version; VCHIQ_STATE_T *state; VCHIQ_INSTANCE_T instance; int service_use_count; VCHIQ_BULK_QUEUE_T bulk_tx; VCHIQ_BULK_QUEUE_T bulk_rx; struct semaphore remove_event; struct semaphore bulk_remove_event; struct mutex bulk_mutex; struct service_stats_struct { int quota_stalls; int slot_stalls; int bulk_stalls; int error_count; int ctrl_tx_count; int ctrl_rx_count; int bulk_tx_count; int bulk_rx_count; int bulk_aborted_count; uint64_t ctrl_tx_bytes; uint64_t ctrl_rx_bytes; uint64_t bulk_tx_bytes; uint64_t bulk_rx_bytes; } stats; } VCHIQ_SERVICE_T; /* The quota information is outside VCHIQ_SERVICE_T so that it can be statically allocated, since for accounting reasons a service's slot usage is carried over between users of the same port number. */ typedef struct vchiq_service_quota_struct { unsigned short slot_quota; unsigned short slot_use_count; unsigned short message_quota; unsigned short message_use_count; struct semaphore quota_event; int previous_tx_index; } VCHIQ_SERVICE_QUOTA_T; typedef struct vchiq_shared_state_struct { /* A non-zero value here indicates that the content is valid. */ int initialised; /* The first and last (inclusive) slots allocated to the owner. */ int slot_first; int slot_last; /* The slot allocated to synchronous messages from the owner. */ int slot_sync; /* Signalling this event indicates that owner's slot handler thread ** should run. */ REMOTE_EVENT_T trigger; /* Indicates the byte position within the stream where the next message ** will be written. The least significant bits are an index into the ** slot. The next bits are the index of the slot in slot_queue. */ int tx_pos; /* This event should be signalled when a slot is recycled. */ REMOTE_EVENT_T recycle; /* The slot_queue index where the next recycled slot will be written. */ int slot_queue_recycle; /* This event should be signalled when a synchronous message is sent. */ REMOTE_EVENT_T sync_trigger; /* This event should be signalled when a synchronous message has been ** released. */ REMOTE_EVENT_T sync_release; /* A circular buffer of slot indexes. */ int slot_queue[VCHIQ_MAX_SLOTS_PER_SIDE]; /* Debugging state */ int debug[DEBUG_MAX]; } __packed VCHIQ_SHARED_STATE_T; typedef struct vchiq_slot_zero_struct { int magic; short version; short version_min; int slot_zero_size; int slot_size; int max_slots; int max_slots_per_side; int platform_data[2]; VCHIQ_SHARED_STATE_T master; VCHIQ_SHARED_STATE_T slave; VCHIQ_SLOT_INFO_T slots[VCHIQ_MAX_SLOTS]; } __packed VCHIQ_SLOT_ZERO_T; struct vchiq_state_struct { int id; int initialised; VCHIQ_CONNSTATE_T conn_state; int is_master; VCHIQ_SHARED_STATE_T *local; VCHIQ_SHARED_STATE_T *remote; VCHIQ_SLOT_T *slot_data; unsigned short default_slot_quota; unsigned short default_message_quota; /* Event indicating connect message received */ struct semaphore connect; /* Mutex protecting services */ struct mutex mutex; VCHIQ_INSTANCE_T *instance; /* Processes incoming messages */ VCHIQ_THREAD_T slot_handler_thread; /* Processes recycled slots */ VCHIQ_THREAD_T recycle_thread; /* Processes synchronous messages */ VCHIQ_THREAD_T sync_thread; /* Local implementation of the trigger remote event */ struct semaphore trigger_event; /* Local implementation of the recycle remote event */ struct semaphore recycle_event; /* Local implementation of the sync trigger remote event */ struct semaphore sync_trigger_event; /* Local implementation of the sync release remote event */ struct semaphore sync_release_event; char *tx_data; char *rx_data; VCHIQ_SLOT_INFO_T *rx_info; struct mutex slot_mutex; struct mutex recycle_mutex; struct mutex sync_mutex; struct mutex bulk_transfer_mutex; /* Indicates the byte position within the stream from where the next ** message will be read. The least significant bits are an index into ** the slot.The next bits are the index of the slot in ** remote->slot_queue. */ int rx_pos; /* A cached copy of local->tx_pos. Only write to local->tx_pos, and read from remote->tx_pos. */ int local_tx_pos; /* The slot_queue index of the slot to become available next. */ int slot_queue_available; /* A flag to indicate if any poll has been requested */ int poll_needed; /* Ths index of the previous slot used for data messages. */ int previous_data_index; /* The number of slots occupied by data messages. */ unsigned short data_use_count; /* The maximum number of slots to be occupied by data messages. */ unsigned short data_quota; /* An array of bit sets indicating which services must be polled. */ atomic_t poll_services[BITSET_SIZE(VCHIQ_MAX_SERVICES)]; /* The number of the first unused service */ int unused_service; /* Signalled when a free slot becomes available. */ struct semaphore slot_available_event; struct semaphore slot_remove_event; /* Signalled when a free data slot becomes available. */ struct semaphore data_quota_event; /* Incremented when there are bulk transfers which cannot be processed * whilst paused and must be processed on resume */ int deferred_bulks; struct state_stats_struct { int slot_stalls; int data_stalls; int ctrl_tx_count; int ctrl_rx_count; int error_count; } stats; VCHIQ_SERVICE_T * services[VCHIQ_MAX_SERVICES]; VCHIQ_SERVICE_QUOTA_T service_quotas[VCHIQ_MAX_SERVICES]; VCHIQ_SLOT_INFO_T slot_info[VCHIQ_MAX_SLOTS]; VCHIQ_PLATFORM_STATE_T platform_state; }; struct bulk_waiter { VCHIQ_BULK_T *bulk; struct semaphore event; int actual; }; extern spinlock_t bulk_waiter_spinlock; extern int vchiq_core_log_level; extern int vchiq_core_msg_log_level; extern int vchiq_sync_log_level; extern VCHIQ_STATE_T *vchiq_states[VCHIQ_MAX_STATES]; extern const char * get_conn_state_name(VCHIQ_CONNSTATE_T conn_state); extern VCHIQ_SLOT_ZERO_T * vchiq_init_slots(void *mem_base, int mem_size); extern VCHIQ_STATUS_T vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero, int is_master); extern VCHIQ_STATUS_T vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance); extern VCHIQ_SERVICE_T * vchiq_add_service_internal(VCHIQ_STATE_T *state, const VCHIQ_SERVICE_PARAMS_T *params, int srvstate, VCHIQ_INSTANCE_T instance, VCHIQ_USERDATA_TERM_T userdata_term); extern VCHIQ_STATUS_T vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id); extern VCHIQ_STATUS_T vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd); extern void vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service); extern void vchiq_free_service_internal(VCHIQ_SERVICE_T *service); extern VCHIQ_STATUS_T vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance); extern VCHIQ_STATUS_T vchiq_pause_internal(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_resume_internal(VCHIQ_STATE_T *state); extern void remote_event_pollall(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata, VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir); extern void vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state); extern void vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service); extern void vchiq_loud_error_header(void); extern void vchiq_loud_error_footer(void); extern void request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type); static inline VCHIQ_SERVICE_T * handle_to_service(VCHIQ_SERVICE_HANDLE_T handle) { VCHIQ_STATE_T *state = vchiq_states[(handle / VCHIQ_MAX_SERVICES) & (VCHIQ_MAX_STATES - 1)]; if (!state) return NULL; return state->services[handle & (VCHIQ_MAX_SERVICES - 1)]; } extern VCHIQ_SERVICE_T * find_service_by_handle(VCHIQ_SERVICE_HANDLE_T handle); extern VCHIQ_SERVICE_T * find_service_by_port(VCHIQ_STATE_T *state, int localport); extern VCHIQ_SERVICE_T * find_service_for_instance(VCHIQ_INSTANCE_T instance, VCHIQ_SERVICE_HANDLE_T handle); extern VCHIQ_SERVICE_T * next_service_by_instance(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance, int *pidx); extern void lock_service(VCHIQ_SERVICE_T *service); extern void unlock_service(VCHIQ_SERVICE_T *service); /* The following functions are called from vchiq_core, and external ** implementations must be provided. */ extern VCHIQ_STATUS_T vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, VCHI_MEM_HANDLE_T memhandle, void *offset, int size, int dir); extern void vchiq_transfer_bulk(VCHIQ_BULK_T *bulk); extern void vchiq_complete_bulk(VCHIQ_BULK_T *bulk); extern VCHIQ_STATUS_T vchiq_copy_from_user(void *dst, const void *src, int size); extern void remote_event_signal(REMOTE_EVENT_T *event); void vchiq_platform_check_suspend(VCHIQ_STATE_T *state); extern void vchiq_platform_paused(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_platform_resume(VCHIQ_STATE_T *state); extern void vchiq_platform_resumed(VCHIQ_STATE_T *state); extern void vchiq_dump(void *dump_context, const char *str, int len); extern void vchiq_dump_platform_state(void *dump_context); extern void vchiq_dump_platform_instances(void *dump_context); extern void vchiq_dump_platform_service_state(void *dump_context, VCHIQ_SERVICE_T *service); extern VCHIQ_STATUS_T vchiq_use_service_internal(VCHIQ_SERVICE_T *service); extern VCHIQ_STATUS_T vchiq_release_service_internal(VCHIQ_SERVICE_T *service); extern void vchiq_on_remote_use(VCHIQ_STATE_T *state); extern void vchiq_on_remote_release(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_platform_init_state(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_check_service(VCHIQ_SERVICE_T *service); extern void vchiq_on_remote_use_active(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_send_remote_use(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_send_remote_release(VCHIQ_STATE_T *state); extern VCHIQ_STATUS_T vchiq_send_remote_use_active(VCHIQ_STATE_T *state); extern void vchiq_platform_conn_state_changed(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T oldstate, VCHIQ_CONNSTATE_T newstate); extern void vchiq_platform_handle_timeout(VCHIQ_STATE_T *state); extern void vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate); extern void vchiq_log_dump_mem(const char *label, uint32_t addr, const void *voidMem, size_t numBytes); extern void vchiq_core_initialize(void); #endif CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_if.h 1004 1004 644 7df4f688228f2758eebd8284c78ba119 7811 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_IF_H #define VCHIQ_IF_H #include "interface/vchi/vchi_mh.h" #define VCHIQ_SERVICE_HANDLE_INVALID 0 #define VCHIQ_SLOT_SIZE 4096 #define VCHIQ_MAX_MSG_SIZE (VCHIQ_SLOT_SIZE - sizeof(VCHIQ_HEADER_T)) #define VCHIQ_CHANNEL_SIZE VCHIQ_MAX_MSG_SIZE /* For backwards compatibility */ #define VCHIQ_MAKE_FOURCC(x0, x1, x2, x3) \ (((x0) << 24) | ((x1) << 16) | ((x2) << 8) | (x3)) #define VCHIQ_GET_SERVICE_USERDATA(service) vchiq_get_service_userdata(service) #define VCHIQ_GET_SERVICE_FOURCC(service) vchiq_get_service_fourcc(service) typedef enum { VCHIQ_SERVICE_OPENED, /* service, -, - */ VCHIQ_SERVICE_CLOSED, /* service, -, - */ VCHIQ_MESSAGE_AVAILABLE, /* service, header, - */ VCHIQ_BULK_TRANSMIT_DONE, /* service, -, bulk_userdata */ VCHIQ_BULK_RECEIVE_DONE, /* service, -, bulk_userdata */ VCHIQ_BULK_TRANSMIT_ABORTED, /* service, -, bulk_userdata */ VCHIQ_BULK_RECEIVE_ABORTED /* service, -, bulk_userdata */ } VCHIQ_REASON_T; typedef enum { VCHIQ_ERROR = -1, VCHIQ_SUCCESS = 0, VCHIQ_RETRY = 1 } VCHIQ_STATUS_T; typedef enum { VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_MODE_BLOCKING, VCHIQ_BULK_MODE_NOCALLBACK, VCHIQ_BULK_MODE_WAITING /* Reserved for internal use */ } VCHIQ_BULK_MODE_T; typedef enum { VCHIQ_SERVICE_OPTION_AUTOCLOSE, VCHIQ_SERVICE_OPTION_SLOT_QUOTA, VCHIQ_SERVICE_OPTION_MESSAGE_QUOTA, VCHIQ_SERVICE_OPTION_SYNCHRONOUS } VCHIQ_SERVICE_OPTION_T; typedef struct vchiq_header_struct { /* The message identifier - opaque to applications. */ int msgid; /* Size of message data. */ unsigned int size; char data[0]; /* message */ } VCHIQ_HEADER_T; typedef struct { const void *data; unsigned int size; } VCHIQ_ELEMENT_T; typedef unsigned int VCHIQ_SERVICE_HANDLE_T; typedef VCHIQ_STATUS_T (*VCHIQ_CALLBACK_T)(VCHIQ_REASON_T, VCHIQ_HEADER_T *, VCHIQ_SERVICE_HANDLE_T, void *); typedef struct vchiq_service_base_struct { int fourcc; VCHIQ_CALLBACK_T callback; void *userdata; } VCHIQ_SERVICE_BASE_T; typedef struct vchiq_service_params_struct { int fourcc; VCHIQ_CALLBACK_T callback; void *userdata; short version; /* Increment for non-trivial changes */ short version_min; /* Update for incompatible changes */ } VCHIQ_SERVICE_PARAMS_T; typedef struct vchiq_config_struct { unsigned int max_msg_size; unsigned int bulk_threshold; /* The message size above which it is better to use a bulk transfer (<= max_msg_size) */ unsigned int max_outstanding_bulks; unsigned int max_services; short version; /* The version of VCHIQ */ short version_min; /* The minimum compatible version of VCHIQ */ } VCHIQ_CONFIG_T; typedef struct vchiq_instance_struct *VCHIQ_INSTANCE_T; typedef void (*VCHIQ_REMOTE_USE_CALLBACK_T)(void *cb_arg); extern VCHIQ_STATUS_T vchiq_initialise(VCHIQ_INSTANCE_T *pinstance); extern VCHIQ_STATUS_T vchiq_shutdown(VCHIQ_INSTANCE_T instance); extern VCHIQ_STATUS_T vchiq_connect(VCHIQ_INSTANCE_T instance); extern VCHIQ_STATUS_T vchiq_add_service(VCHIQ_INSTANCE_T instance, const VCHIQ_SERVICE_PARAMS_T *params, VCHIQ_SERVICE_HANDLE_T *pservice); extern VCHIQ_STATUS_T vchiq_open_service(VCHIQ_INSTANCE_T instance, const VCHIQ_SERVICE_PARAMS_T *params, VCHIQ_SERVICE_HANDLE_T *pservice); extern VCHIQ_STATUS_T vchiq_close_service(VCHIQ_SERVICE_HANDLE_T service); extern VCHIQ_STATUS_T vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T service); extern VCHIQ_STATUS_T vchiq_use_service(VCHIQ_SERVICE_HANDLE_T service); extern VCHIQ_STATUS_T vchiq_use_service_no_resume( VCHIQ_SERVICE_HANDLE_T service); extern VCHIQ_STATUS_T vchiq_release_service(VCHIQ_SERVICE_HANDLE_T service); extern VCHIQ_STATUS_T vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T service, const VCHIQ_ELEMENT_T *elements, unsigned int count); extern void vchiq_release_message(VCHIQ_SERVICE_HANDLE_T service, VCHIQ_HEADER_T *header); extern VCHIQ_STATUS_T vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T service, void *data, unsigned int size, void *userdata); extern VCHIQ_STATUS_T vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T service, void *data, unsigned int size, void *userdata); extern VCHIQ_STATUS_T vchiq_queue_bulk_transmit_handle( VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle, const void *offset, unsigned int size, void *userdata); extern VCHIQ_STATUS_T vchiq_queue_bulk_receive_handle( VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle, void *offset, unsigned int size, void *userdata); extern VCHIQ_STATUS_T vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T service, void *data, unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode); extern VCHIQ_STATUS_T vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T service, void *data, unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode); extern VCHIQ_STATUS_T vchiq_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle, const void *offset, unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode); extern VCHIQ_STATUS_T vchiq_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle, void *offset, unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode); extern int vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T service); extern void *vchiq_get_service_userdata(VCHIQ_SERVICE_HANDLE_T service); extern int vchiq_get_service_fourcc(VCHIQ_SERVICE_HANDLE_T service); extern VCHIQ_STATUS_T vchiq_get_config(VCHIQ_INSTANCE_T instance, int config_size, VCHIQ_CONFIG_T *pconfig); extern VCHIQ_STATUS_T vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T service, VCHIQ_SERVICE_OPTION_T option, int value); extern VCHIQ_STATUS_T vchiq_remote_use(VCHIQ_INSTANCE_T instance, VCHIQ_REMOTE_USE_CALLBACK_T callback, void *cb_arg); extern VCHIQ_STATUS_T vchiq_remote_release(VCHIQ_INSTANCE_T instance); extern VCHIQ_STATUS_T vchiq_dump_phys_mem(VCHIQ_SERVICE_HANDLE_T service, void *ptr, size_t num_bytes); extern VCHIQ_STATUS_T vchiq_get_peer_version(VCHIQ_SERVICE_HANDLE_T handle, short *peer_version); #endif /* VCHIQ_IF_H */ CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_ioctl.h 1004 1004 644 214e7761b0f8cb9d6ed2317ddf62db9e 4329 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_IOCTLS_H #define VCHIQ_IOCTLS_H #include "vchiq_if.h" #define VCHIQ_IOC_MAGIC 0xc4 #define VCHIQ_INVALID_HANDLE (~0) typedef struct { VCHIQ_SERVICE_PARAMS_T params; int is_open; int is_vchi; unsigned int handle; /* OUT */ } VCHIQ_CREATE_SERVICE_T; typedef struct { unsigned int handle; unsigned int count; const VCHIQ_ELEMENT_T *elements; } VCHIQ_QUEUE_MESSAGE_T; typedef struct { unsigned int handle; void *data; unsigned int size; void *userdata; VCHIQ_BULK_MODE_T mode; } VCHIQ_QUEUE_BULK_TRANSFER_T; typedef struct { VCHIQ_REASON_T reason; VCHIQ_HEADER_T *header; void *service_userdata; void *bulk_userdata; } VCHIQ_COMPLETION_DATA_T; typedef struct { unsigned int count; VCHIQ_COMPLETION_DATA_T *buf; unsigned int msgbufsize; unsigned int msgbufcount; /* IN/OUT */ void **msgbufs; } VCHIQ_AWAIT_COMPLETION_T; typedef struct { unsigned int handle; int blocking; unsigned int bufsize; void *buf; } VCHIQ_DEQUEUE_MESSAGE_T; typedef struct { unsigned int config_size; VCHIQ_CONFIG_T *pconfig; } VCHIQ_GET_CONFIG_T; typedef struct { unsigned int handle; VCHIQ_SERVICE_OPTION_T option; int value; } VCHIQ_SET_SERVICE_OPTION_T; typedef struct { void *virt_addr; size_t num_bytes; } VCHIQ_DUMP_MEM_T; #define VCHIQ_IOC_CONNECT _IO(VCHIQ_IOC_MAGIC, 0) #define VCHIQ_IOC_SHUTDOWN _IO(VCHIQ_IOC_MAGIC, 1) #define VCHIQ_IOC_CREATE_SERVICE \ _IOWR(VCHIQ_IOC_MAGIC, 2, VCHIQ_CREATE_SERVICE_T) #define VCHIQ_IOC_REMOVE_SERVICE _IO(VCHIQ_IOC_MAGIC, 3) #define VCHIQ_IOC_QUEUE_MESSAGE \ _IOW(VCHIQ_IOC_MAGIC, 4, VCHIQ_QUEUE_MESSAGE_T) #define VCHIQ_IOC_QUEUE_BULK_TRANSMIT \ _IOWR(VCHIQ_IOC_MAGIC, 5, VCHIQ_QUEUE_BULK_TRANSFER_T) #define VCHIQ_IOC_QUEUE_BULK_RECEIVE \ _IOWR(VCHIQ_IOC_MAGIC, 6, VCHIQ_QUEUE_BULK_TRANSFER_T) #define VCHIQ_IOC_AWAIT_COMPLETION \ _IOWR(VCHIQ_IOC_MAGIC, 7, VCHIQ_AWAIT_COMPLETION_T) #define VCHIQ_IOC_DEQUEUE_MESSAGE \ _IOWR(VCHIQ_IOC_MAGIC, 8, VCHIQ_DEQUEUE_MESSAGE_T) #define VCHIQ_IOC_GET_CLIENT_ID _IO(VCHIQ_IOC_MAGIC, 9) #define VCHIQ_IOC_GET_CONFIG \ _IOWR(VCHIQ_IOC_MAGIC, 10, VCHIQ_GET_CONFIG_T) #define VCHIQ_IOC_CLOSE_SERVICE _IO(VCHIQ_IOC_MAGIC, 11) #define VCHIQ_IOC_USE_SERVICE _IO(VCHIQ_IOC_MAGIC, 12) #define VCHIQ_IOC_RELEASE_SERVICE _IO(VCHIQ_IOC_MAGIC, 13) #define VCHIQ_IOC_SET_SERVICE_OPTION \ _IOW(VCHIQ_IOC_MAGIC, 14, VCHIQ_SET_SERVICE_OPTION_T) #define VCHIQ_IOC_DUMP_PHYS_MEM \ _IOW(VCHIQ_IOC_MAGIC, 15, VCHIQ_DUMP_MEM_T) #define VCHIQ_IOC_MAX 15 #endif CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_kern_lib.c 1004 1004 644 a9156eebc540fd3044b9f5f1f40279a0 12548 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* ---- Include Files ---------------------------------------------------- */ #include "vchiq_core.h" #include "vchiq_arm.h" /* ---- Public Variables ------------------------------------------------- */ /* ---- Private Constants and Types -------------------------------------- */ struct bulk_waiter_node { struct bulk_waiter bulk_waiter; int pid; struct list_head list; }; struct vchiq_instance_struct { VCHIQ_STATE_T *state; int connected; struct list_head bulk_waiter_list; struct mutex bulk_waiter_list_mutex; }; static VCHIQ_STATUS_T vchiq_blocking_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, void *data, unsigned int size, VCHIQ_BULK_DIR_T dir); /**************************************************************************** * * vchiq_initialise * ***************************************************************************/ #define VCHIQ_INIT_RETRIES 10 VCHIQ_STATUS_T vchiq_initialise(VCHIQ_INSTANCE_T *instanceOut) { VCHIQ_STATUS_T status = VCHIQ_ERROR; VCHIQ_STATE_T *state; VCHIQ_INSTANCE_T instance = NULL; int i; vchiq_log_trace(vchiq_core_log_level, "%s called", __func__); /* VideoCore may not be ready due to boot up timing. It may never be ready if kernel and firmware are mismatched, so don't block forever. */ for (i=0; i0) { vchiq_log_warning(vchiq_core_log_level, "%s: videocore initialized after %d retries\n", __func__, i); } instance = kzalloc(sizeof(*instance), GFP_KERNEL); if (!instance) { vchiq_log_error(vchiq_core_log_level, "%s: error allocating vchiq instance\n", __func__); goto failed; } instance->connected = 0; instance->state = state; lmutex_init(&instance->bulk_waiter_list_mutex); INIT_LIST_HEAD(&instance->bulk_waiter_list); *instanceOut = instance; status = VCHIQ_SUCCESS; failed: vchiq_log_trace(vchiq_core_log_level, "%s(%p): returning %d", __func__, instance, status); return status; } EXPORT_SYMBOL(vchiq_initialise); /**************************************************************************** * * vchiq_shutdown * ***************************************************************************/ VCHIQ_STATUS_T vchiq_shutdown(VCHIQ_INSTANCE_T instance) { VCHIQ_STATUS_T status; VCHIQ_STATE_T *state = instance->state; vchiq_log_trace(vchiq_core_log_level, "%s(%p) called", __func__, instance); if (lmutex_lock_interruptible(&state->mutex) != 0) return VCHIQ_RETRY; /* Remove all services */ status = vchiq_shutdown_internal(state, instance); lmutex_unlock(&state->mutex); vchiq_log_trace(vchiq_core_log_level, "%s(%p): returning %d", __func__, instance, status); if (status == VCHIQ_SUCCESS) { struct list_head *pos, *next; list_for_each_safe(pos, next, &instance->bulk_waiter_list) { struct bulk_waiter_node *waiter; waiter = list_entry(pos, struct bulk_waiter_node, list); list_del(pos); vchiq_log_info(vchiq_arm_log_level, "bulk_waiter - cleaned up %x " "for pid %d", (unsigned int)waiter, waiter->pid); _sema_destroy(&waiter->bulk_waiter.event); kfree(waiter); } lmutex_destroy(&instance->bulk_waiter_list_mutex); kfree(instance); } return status; } EXPORT_SYMBOL(vchiq_shutdown); /**************************************************************************** * * vchiq_is_connected * ***************************************************************************/ static int vchiq_is_connected(VCHIQ_INSTANCE_T instance) { return instance->connected; } /**************************************************************************** * * vchiq_connect * ***************************************************************************/ VCHIQ_STATUS_T vchiq_connect(VCHIQ_INSTANCE_T instance) { VCHIQ_STATUS_T status; VCHIQ_STATE_T *state = instance->state; vchiq_log_trace(vchiq_core_log_level, "%s(%p) called", __func__, instance); if (lmutex_lock_interruptible(&state->mutex) != 0) { vchiq_log_trace(vchiq_core_log_level, "%s: call to lmutex_lock failed", __func__); status = VCHIQ_RETRY; goto failed; } status = vchiq_connect_internal(state, instance); if (status == VCHIQ_SUCCESS) instance->connected = 1; lmutex_unlock(&state->mutex); failed: vchiq_log_trace(vchiq_core_log_level, "%s(%p): returning %d", __func__, instance, status); return status; } EXPORT_SYMBOL(vchiq_connect); /**************************************************************************** * * vchiq_add_service * ***************************************************************************/ VCHIQ_STATUS_T vchiq_add_service( VCHIQ_INSTANCE_T instance, const VCHIQ_SERVICE_PARAMS_T *params, VCHIQ_SERVICE_HANDLE_T *phandle) { VCHIQ_STATUS_T status; VCHIQ_STATE_T *state = instance->state; VCHIQ_SERVICE_T *service = NULL; int srvstate; vchiq_log_trace(vchiq_core_log_level, "%s(%p) called", __func__, instance); *phandle = VCHIQ_SERVICE_HANDLE_INVALID; srvstate = vchiq_is_connected(instance) ? VCHIQ_SRVSTATE_LISTENING : VCHIQ_SRVSTATE_HIDDEN; service = vchiq_add_service_internal( state, params, srvstate, instance, NULL); if (service) { *phandle = service->handle; status = VCHIQ_SUCCESS; } else status = VCHIQ_ERROR; vchiq_log_trace(vchiq_core_log_level, "%s(%p): returning %d", __func__, instance, status); return status; } EXPORT_SYMBOL(vchiq_add_service); /**************************************************************************** * * vchiq_open_service * ***************************************************************************/ VCHIQ_STATUS_T vchiq_open_service( VCHIQ_INSTANCE_T instance, const VCHIQ_SERVICE_PARAMS_T *params, VCHIQ_SERVICE_HANDLE_T *phandle) { VCHIQ_STATUS_T status = VCHIQ_ERROR; VCHIQ_STATE_T *state = instance->state; VCHIQ_SERVICE_T *service = NULL; vchiq_log_trace(vchiq_core_log_level, "%s(%p) called", __func__, instance); *phandle = VCHIQ_SERVICE_HANDLE_INVALID; if (!vchiq_is_connected(instance)) goto failed; service = vchiq_add_service_internal(state, params, VCHIQ_SRVSTATE_OPENING, instance, NULL); if (service) { *phandle = service->handle; status = vchiq_open_service_internal(service, (uintptr_t)current); if (status != VCHIQ_SUCCESS) { vchiq_remove_service(service->handle); *phandle = VCHIQ_SERVICE_HANDLE_INVALID; } } failed: vchiq_log_trace(vchiq_core_log_level, "%s(%p): returning %d", __func__, instance, status); return status; } EXPORT_SYMBOL(vchiq_open_service); VCHIQ_STATUS_T vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle, void *data, unsigned int size, void *userdata) { return vchiq_bulk_transfer(handle, VCHI_MEM_HANDLE_INVALID, data, size, userdata, VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_TRANSMIT); } EXPORT_SYMBOL(vchiq_queue_bulk_transmit); VCHIQ_STATUS_T vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data, unsigned int size, void *userdata) { return vchiq_bulk_transfer(handle, VCHI_MEM_HANDLE_INVALID, data, size, userdata, VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_RECEIVE); } EXPORT_SYMBOL(vchiq_queue_bulk_receive); VCHIQ_STATUS_T vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle, void *data, unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode) { VCHIQ_STATUS_T status; switch (mode) { case VCHIQ_BULK_MODE_NOCALLBACK: case VCHIQ_BULK_MODE_CALLBACK: status = vchiq_bulk_transfer(handle, VCHI_MEM_HANDLE_INVALID, data, size, userdata, mode, VCHIQ_BULK_TRANSMIT); break; case VCHIQ_BULK_MODE_BLOCKING: status = vchiq_blocking_bulk_transfer(handle, data, size, VCHIQ_BULK_TRANSMIT); break; default: return VCHIQ_ERROR; } return status; } EXPORT_SYMBOL(vchiq_bulk_transmit); VCHIQ_STATUS_T vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data, unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode) { VCHIQ_STATUS_T status; switch (mode) { case VCHIQ_BULK_MODE_NOCALLBACK: case VCHIQ_BULK_MODE_CALLBACK: status = vchiq_bulk_transfer(handle, VCHI_MEM_HANDLE_INVALID, data, size, userdata, mode, VCHIQ_BULK_RECEIVE); break; case VCHIQ_BULK_MODE_BLOCKING: status = vchiq_blocking_bulk_transfer(handle, data, size, VCHIQ_BULK_RECEIVE); break; default: return VCHIQ_ERROR; } return status; } EXPORT_SYMBOL(vchiq_bulk_receive); static VCHIQ_STATUS_T vchiq_blocking_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, void *data, unsigned int size, VCHIQ_BULK_DIR_T dir) { VCHIQ_INSTANCE_T instance; VCHIQ_SERVICE_T *service; VCHIQ_STATUS_T status; struct bulk_waiter_node *waiter = NULL; struct list_head *pos; service = find_service_by_handle(handle); if (!service) return VCHIQ_ERROR; instance = service->instance; unlock_service(service); lmutex_lock(&instance->bulk_waiter_list_mutex); list_for_each(pos, &instance->bulk_waiter_list) { if (list_entry(pos, struct bulk_waiter_node, list)->pid == current->p_pid) { waiter = list_entry(pos, struct bulk_waiter_node, list); list_del(pos); break; } } lmutex_unlock(&instance->bulk_waiter_list_mutex); if (waiter) { VCHIQ_BULK_T *bulk = waiter->bulk_waiter.bulk; if (bulk) { /* This thread has an outstanding bulk transfer. */ if ((bulk->data != data) || (bulk->size != size)) { /* This is not a retry of the previous one. ** Cancel the signal when the transfer ** completes. */ spin_lock(&bulk_waiter_spinlock); bulk->userdata = NULL; spin_unlock(&bulk_waiter_spinlock); } } } if (!waiter) { waiter = kzalloc(sizeof(struct bulk_waiter_node), GFP_KERNEL); if (!waiter) { vchiq_log_error(vchiq_core_log_level, "%s - out of memory", __func__); return VCHIQ_ERROR; } } status = vchiq_bulk_transfer(handle, VCHI_MEM_HANDLE_INVALID, data, size, &waiter->bulk_waiter, VCHIQ_BULK_MODE_BLOCKING, dir); if ((status != VCHIQ_RETRY) || fatal_signal_pending(current) || !waiter->bulk_waiter.bulk) { VCHIQ_BULK_T *bulk = waiter->bulk_waiter.bulk; if (bulk) { /* Cancel the signal when the transfer ** completes. */ spin_lock(&bulk_waiter_spinlock); bulk->userdata = NULL; spin_unlock(&bulk_waiter_spinlock); } _sema_destroy(&waiter->bulk_waiter.event); kfree(waiter); } else { waiter->pid = current->p_pid; lmutex_lock(&instance->bulk_waiter_list_mutex); list_add(&waiter->list, &instance->bulk_waiter_list); lmutex_unlock(&instance->bulk_waiter_list_mutex); vchiq_log_info(vchiq_arm_log_level, "saved bulk_waiter %x for pid %d", (unsigned int)waiter, current->p_pid); } return status; } CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_kmod.c 1004 1004 644 599799cf30dea46ecf6a436cc517c3ed 5570 /*- * Copyright (c) 2012-2015 Oleksandr Tymoshenko * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD: head/sys/contrib/vchiq/interface/vchiq_arm/vchiq_kmod.c 278277 2015-02-05 19:54:03Z gonzo $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "vchiq_arm.h" #include "vchiq_2835.h" #define VCHIQ_LOCK do { \ mtx_lock(&bcm_vchiq_sc->lock); \ } while(0) #define VCHIQ_UNLOCK do { \ mtx_unlock(&bcm_vchiq_sc->lock); \ } while(0) #ifdef DEBUG #define dprintf(fmt, args...) printf(fmt, ##args) #else #define dprintf(fmt, args...) #endif struct bcm_vchiq_softc { struct mtx lock; struct resource * mem_res; struct resource * irq_res; void* intr_hl; bus_space_tag_t bst; bus_space_handle_t bsh; }; static struct bcm_vchiq_softc *bcm_vchiq_sc = NULL; #define vchiq_read_4(reg) \ bus_space_read_4(bcm_vchiq_sc->bst, bcm_vchiq_sc->bsh, reg) #define vchiq_write_4(reg, val) \ bus_space_write_4(bcm_vchiq_sc->bst, bcm_vchiq_sc->bsh, reg, val) /* * Extern functions */ void vchiq_exit(void); int vchiq_init(void); extern VCHIQ_STATE_T g_state; static void bcm_vchiq_intr(void *arg) { VCHIQ_STATE_T *state = &g_state; unsigned int status; /* Read (and clear) the doorbell */ status = vchiq_read_4(0x40); if (status & 0x4) { /* Was the doorbell rung? */ remote_event_pollall(state); } } void remote_event_signal(REMOTE_EVENT_T *event) { event->fired = 1; /* The test on the next line also ensures the write on the previous line has completed */ if (event->armed) { /* trigger vc interrupt */ __asm __volatile ("mcr p15, 0, %0, c7, c10, 4" : : "r" (0) : "memory"); vchiq_write_4(0x48, 0); } } static int bcm_vchiq_probe(device_t dev) { if (ofw_bus_is_compatible(dev, "broadcom,bcm2835-vchiq")) { device_set_desc(dev, "BCM2835 VCHIQ"); return(BUS_PROBE_DEFAULT); } return (ENXIO); } static int bcm_vchiq_attach(device_t dev) { struct bcm_vchiq_softc *sc = device_get_softc(dev); int rid = 0; if (bcm_vchiq_sc != NULL) return (EINVAL); sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->mem_res == NULL) { device_printf(dev, "could not allocate memory resource\n"); return (ENXIO); } sc->bst = rman_get_bustag(sc->mem_res); sc->bsh = rman_get_bushandle(sc->mem_res); rid = 0; sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); if (sc->irq_res == NULL) { device_printf(dev, "could not allocate interrupt resource\n"); return (ENXIO); } vchiq_core_initialize(); /* Setup and enable the timer */ if (bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC, NULL, bcm_vchiq_intr, sc, &sc->intr_hl) != 0) { bus_release_resource(dev, SYS_RES_IRQ, rid, sc->irq_res); device_printf(dev, "Unable to setup the clock irq handler.\n"); return (ENXIO); } mtx_init(&sc->lock, "vchiq", MTX_DEF, 0); bcm_vchiq_sc = sc; vchiq_init(); return (0); } static int bcm_vchiq_detach(device_t dev) { struct bcm_vchiq_softc *sc = device_get_softc(dev); vchiq_exit(); if (sc->intr_hl) bus_teardown_intr(dev, sc->irq_res, sc->intr_hl); bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res); mtx_destroy(&sc->lock); return (0); } static device_method_t bcm_vchiq_methods[] = { DEVMETHOD(device_probe, bcm_vchiq_probe), DEVMETHOD(device_attach, bcm_vchiq_attach), DEVMETHOD(device_detach, bcm_vchiq_detach), /* Bus interface */ DEVMETHOD(bus_add_child, bus_generic_add_child), { 0, 0 } }; static driver_t bcm_vchiq_driver = { "vchiq", bcm_vchiq_methods, sizeof(struct bcm_vchiq_softc), }; static devclass_t bcm_vchiq_devclass; DRIVER_MODULE(vchiq, simplebus, bcm_vchiq_driver, bcm_vchiq_devclass, 0, 0); MODULE_VERSION(vchiq, 1); CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_memdrv.h 1004 1004 644 15d5e37d0bd5a8ccd4a5e7e2eea88349 2861 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_MEMDRV_H #define VCHIQ_MEMDRV_H /* ---- Include Files ----------------------------------------------------- */ #include #include "vchiq_if.h" /* ---- Constants and Types ---------------------------------------------- */ typedef struct { void *armSharedMemVirt; dma_addr_t armSharedMemPhys; size_t armSharedMemSize; void *vcSharedMemVirt; dma_addr_t vcSharedMemPhys; size_t vcSharedMemSize; } VCHIQ_SHARED_MEM_INFO_T; /* ---- Variable Externs ------------------------------------------------- */ /* ---- Function Prototypes ---------------------------------------------- */ void vchiq_get_shared_mem_info(VCHIQ_SHARED_MEM_INFO_T *info); VCHIQ_STATUS_T vchiq_memdrv_initialise(void); VCHIQ_STATUS_T vchiq_userdrv_create_instance( const VCHIQ_PLATFORM_DATA_T * platform_data); VCHIQ_STATUS_T vchiq_userdrv_suspend( const VCHIQ_PLATFORM_DATA_T * platform_data); VCHIQ_STATUS_T vchiq_userdrv_resume( const VCHIQ_PLATFORM_DATA_T * platform_data); #endif CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_pagelist.h 1004 1004 644 4c4bb2907db2345769030f50aaf8ba94 2369 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_PAGELIST_H #define VCHIQ_PAGELIST_H #ifndef PAGE_SIZE #define PAGE_SIZE 4096 #endif #undef CACHE_LINE_SIZE #define CACHE_LINE_SIZE 32 #define PAGELIST_WRITE 0 #define PAGELIST_READ 1 #define PAGELIST_READ_WITH_FRAGMENTS 2 typedef struct pagelist_struct { unsigned long length; unsigned short type; unsigned short offset; unsigned long addrs[1]; /* N.B. 12 LSBs hold the number of following pages at consecutive addresses. */ } PAGELIST_T; typedef struct fragments_struct { char headbuf[CACHE_LINE_SIZE]; char tailbuf[CACHE_LINE_SIZE]; } FRAGMENTS_T; #endif /* VCHIQ_PAGELIST_H */ CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_proc.c 1004 1004 644 7aa24ddd981fb6d28b9fbe34f52dcd21 6292 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include "vchiq_core.h" #include "vchiq_arm.h" struct vchiq_proc_info { /* Global 'vc' proc entry used by all instances */ struct proc_dir_entry *vc_cfg_dir; /* one entry per client process */ struct proc_dir_entry *clients; /* log categories */ struct proc_dir_entry *log_categories; }; static struct vchiq_proc_info proc_info; struct proc_dir_entry *vchiq_proc_top(void) { BUG_ON(proc_info.vc_cfg_dir == NULL); return proc_info.vc_cfg_dir; } /**************************************************************************** * * log category entries * ***************************************************************************/ #define PROC_WRITE_BUF_SIZE 256 #define VCHIQ_LOG_ERROR_STR "error" #define VCHIQ_LOG_WARNING_STR "warning" #define VCHIQ_LOG_INFO_STR "info" #define VCHIQ_LOG_TRACE_STR "trace" static int log_cfg_read(char *buffer, char **start, off_t off, int count, int *eof, void *data) { int len = 0; char *log_value = NULL; switch (*((int *)data)) { case VCHIQ_LOG_ERROR: log_value = VCHIQ_LOG_ERROR_STR; break; case VCHIQ_LOG_WARNING: log_value = VCHIQ_LOG_WARNING_STR; break; case VCHIQ_LOG_INFO: log_value = VCHIQ_LOG_INFO_STR; break; case VCHIQ_LOG_TRACE: log_value = VCHIQ_LOG_TRACE_STR; break; default: break; } len += snprintf(buffer + len, count - len, "%s\n", log_value ? log_value : "(null)"); return len; } static int log_cfg_write(struct file *file, const char __user *buffer, unsigned long count, void *data) { int *log_module = data; char kbuf[PROC_WRITE_BUF_SIZE + 1]; (void)file; memset(kbuf, 0, PROC_WRITE_BUF_SIZE + 1); if (count >= PROC_WRITE_BUF_SIZE) count = PROC_WRITE_BUF_SIZE; if (copy_from_user(kbuf, buffer, count) != 0) return -EFAULT; kbuf[count - 1] = 0; if (strncmp("error", kbuf, strlen("error")) == 0) *log_module = VCHIQ_LOG_ERROR; else if (strncmp("warning", kbuf, strlen("warning")) == 0) *log_module = VCHIQ_LOG_WARNING; else if (strncmp("info", kbuf, strlen("info")) == 0) *log_module = VCHIQ_LOG_INFO; else if (strncmp("trace", kbuf, strlen("trace")) == 0) *log_module = VCHIQ_LOG_TRACE; else *log_module = VCHIQ_LOG_DEFAULT; return count; } /* Log category proc entries */ struct vchiq_proc_log_entry { const char *name; int *plevel; struct proc_dir_entry *dir; }; static struct vchiq_proc_log_entry vchiq_proc_log_entries[] = { { "core", &vchiq_core_log_level }, { "msg", &vchiq_core_msg_log_level }, { "sync", &vchiq_sync_log_level }, { "susp", &vchiq_susp_log_level }, { "arm", &vchiq_arm_log_level }, }; static int n_log_entries = sizeof(vchiq_proc_log_entries)/sizeof(vchiq_proc_log_entries[0]); /* create an entry under /proc/vc/log for each log category */ static int vchiq_proc_create_log_entries(struct proc_dir_entry *top) { struct proc_dir_entry *dir; size_t i; int ret = 0; dir = proc_mkdir("log", proc_info.vc_cfg_dir); if (!dir) return -ENOMEM; proc_info.log_categories = dir; for (i = 0; i < n_log_entries; i++) { dir = create_proc_entry(vchiq_proc_log_entries[i].name, 0644, proc_info.log_categories); if (!dir) { ret = -ENOMEM; break; } dir->read_proc = &log_cfg_read; dir->write_proc = &log_cfg_write; dir->data = (void *)vchiq_proc_log_entries[i].plevel; vchiq_proc_log_entries[i].dir = dir; } return ret; } int vchiq_proc_init(void) { BUG_ON(proc_info.vc_cfg_dir != NULL); proc_info.vc_cfg_dir = proc_mkdir("vc", NULL); if (proc_info.vc_cfg_dir == NULL) goto fail; proc_info.clients = proc_mkdir("clients", proc_info.vc_cfg_dir); if (!proc_info.clients) goto fail; if (vchiq_proc_create_log_entries(proc_info.vc_cfg_dir) != 0) goto fail; return 0; fail: vchiq_proc_deinit(); vchiq_log_error(vchiq_arm_log_level, "%s: failed to create proc directory", __func__); return -ENOMEM; } /* remove all the proc entries */ void vchiq_proc_deinit(void) { /* log category entries */ if (proc_info.log_categories) { size_t i; for (i = 0; i < n_log_entries; i++) if (vchiq_proc_log_entries[i].dir) remove_proc_entry( vchiq_proc_log_entries[i].name, proc_info.log_categories); remove_proc_entry(proc_info.log_categories->name, proc_info.vc_cfg_dir); } if (proc_info.clients) remove_proc_entry(proc_info.clients->name, proc_info.vc_cfg_dir); if (proc_info.vc_cfg_dir) remove_proc_entry(proc_info.vc_cfg_dir->name, NULL); } struct proc_dir_entry *vchiq_clients_top(void) { return proc_info.clients; } CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_shim.c 1004 1004 644 e795150e2346be11a9709dd09085a208 23216 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include "interface/vchi/vchi.h" #include "vchiq.h" #include "vchiq_core.h" #include "vchiq_util.h" #define vchiq_status_to_vchi(status) ((int32_t)status) typedef struct { VCHIQ_SERVICE_HANDLE_T handle; VCHIU_QUEUE_T queue; VCHI_CALLBACK_T callback; void *callback_param; } SHIM_SERVICE_T; /* ---------------------------------------------------------------------- * return pointer to the mphi message driver function table * -------------------------------------------------------------------- */ const VCHI_MESSAGE_DRIVER_T * vchi_mphi_message_driver_func_table(void) { return NULL; } /* ---------------------------------------------------------------------- * return a pointer to the 'single' connection driver fops * -------------------------------------------------------------------- */ const VCHI_CONNECTION_API_T * single_get_func_table(void) { return NULL; } VCHI_CONNECTION_T *vchi_create_connection( const VCHI_CONNECTION_API_T *function_table, const VCHI_MESSAGE_DRIVER_T *low_level) { (void)function_table; (void)low_level; return NULL; } /*********************************************************** * Name: vchi_msg_peek * * Arguments: const VCHI_SERVICE_HANDLE_T handle, * void **data, * uint32_t *msg_size, * VCHI_FLAGS_T flags * * Description: Routine to return a pointer to the current message (to allow in * place processing). The message can be removed using * vchi_msg_remove when you're finished * * Returns: int32_t - success == 0 * ***********************************************************/ int32_t vchi_msg_peek(VCHI_SERVICE_HANDLE_T handle, void **data, uint32_t *msg_size, VCHI_FLAGS_T flags) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; VCHIQ_HEADER_T *header; WARN_ON((flags != VCHI_FLAGS_NONE) && (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE)); if (flags == VCHI_FLAGS_NONE) if (vchiu_queue_is_empty(&service->queue)) return -1; header = vchiu_queue_peek(&service->queue); *data = header->data; *msg_size = header->size; return 0; } EXPORT_SYMBOL(vchi_msg_peek); /*********************************************************** * Name: vchi_msg_remove * * Arguments: const VCHI_SERVICE_HANDLE_T handle, * * Description: Routine to remove a message (after it has been read with * vchi_msg_peek) * * Returns: int32_t - success == 0 * ***********************************************************/ int32_t vchi_msg_remove(VCHI_SERVICE_HANDLE_T handle) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; VCHIQ_HEADER_T *header; header = vchiu_queue_pop(&service->queue); vchiq_release_message(service->handle, header); return 0; } EXPORT_SYMBOL(vchi_msg_remove); /*********************************************************** * Name: vchi_msg_queue * * Arguments: VCHI_SERVICE_HANDLE_T handle, * const void *data, * uint32_t data_size, * VCHI_FLAGS_T flags, * void *msg_handle, * * Description: Thin wrapper to queue a message onto a connection * * Returns: int32_t - success == 0 * ***********************************************************/ int32_t vchi_msg_queue(VCHI_SERVICE_HANDLE_T handle, const void *data, uint32_t data_size, VCHI_FLAGS_T flags, void *msg_handle) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; VCHIQ_ELEMENT_T element = {data, data_size}; VCHIQ_STATUS_T status; (void)msg_handle; WARN_ON(flags != VCHI_FLAGS_BLOCK_UNTIL_QUEUED); status = vchiq_queue_message(service->handle, &element, 1); /* vchiq_queue_message() may return VCHIQ_RETRY, so we need to ** implement a retry mechanism since this function is supposed ** to block until queued */ while (status == VCHIQ_RETRY) { msleep(1); status = vchiq_queue_message(service->handle, &element, 1); } return vchiq_status_to_vchi(status); } EXPORT_SYMBOL(vchi_msg_queue); /*********************************************************** * Name: vchi_bulk_queue_receive * * Arguments: VCHI_BULK_HANDLE_T handle, * void *data_dst, * const uint32_t data_size, * VCHI_FLAGS_T flags * void *bulk_handle * * Description: Routine to setup a rcv buffer * * Returns: int32_t - success == 0 * ***********************************************************/ int32_t vchi_bulk_queue_receive(VCHI_SERVICE_HANDLE_T handle, void *data_dst, uint32_t data_size, VCHI_FLAGS_T flags, void *bulk_handle) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; VCHIQ_BULK_MODE_T mode; VCHIQ_STATUS_T status; switch ((int)flags) { case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | VCHI_FLAGS_BLOCK_UNTIL_QUEUED: WARN_ON(!service->callback); mode = VCHIQ_BULK_MODE_CALLBACK; break; case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE: mode = VCHIQ_BULK_MODE_BLOCKING; break; case VCHI_FLAGS_BLOCK_UNTIL_QUEUED: case VCHI_FLAGS_NONE: mode = VCHIQ_BULK_MODE_NOCALLBACK; break; default: WARN(1, "unsupported message\n"); return vchiq_status_to_vchi(VCHIQ_ERROR); } status = vchiq_bulk_receive(service->handle, data_dst, data_size, bulk_handle, mode); /* vchiq_bulk_receive() may return VCHIQ_RETRY, so we need to ** implement a retry mechanism since this function is supposed ** to block until queued */ while (status == VCHIQ_RETRY) { msleep(1); status = vchiq_bulk_receive(service->handle, data_dst, data_size, bulk_handle, mode); } return vchiq_status_to_vchi(status); } EXPORT_SYMBOL(vchi_bulk_queue_receive); /*********************************************************** * Name: vchi_bulk_queue_transmit * * Arguments: VCHI_BULK_HANDLE_T handle, * void *data_src, * uint32_t data_size, * VCHI_FLAGS_T flags, * void *bulk_handle * * Description: Routine to transmit some data * * Returns: int32_t - success == 0 * ***********************************************************/ int32_t vchi_bulk_queue_transmit(VCHI_SERVICE_HANDLE_T handle, void *data_src, uint32_t data_size, VCHI_FLAGS_T flags, void *bulk_handle) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; VCHIQ_BULK_MODE_T mode; VCHIQ_STATUS_T status; switch ((int)flags) { case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | VCHI_FLAGS_BLOCK_UNTIL_QUEUED: WARN_ON(!service->callback); mode = VCHIQ_BULK_MODE_CALLBACK; break; case VCHI_FLAGS_BLOCK_UNTIL_DATA_READ: case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE: mode = VCHIQ_BULK_MODE_BLOCKING; break; case VCHI_FLAGS_BLOCK_UNTIL_QUEUED: case VCHI_FLAGS_NONE: mode = VCHIQ_BULK_MODE_NOCALLBACK; break; default: WARN(1, "unsupported message\n"); return vchiq_status_to_vchi(VCHIQ_ERROR); } status = vchiq_bulk_transmit(service->handle, data_src, data_size, bulk_handle, mode); /* vchiq_bulk_transmit() may return VCHIQ_RETRY, so we need to ** implement a retry mechanism since this function is supposed ** to block until queued */ while (status == VCHIQ_RETRY) { msleep(1); status = vchiq_bulk_transmit(service->handle, data_src, data_size, bulk_handle, mode); } return vchiq_status_to_vchi(status); } EXPORT_SYMBOL(vchi_bulk_queue_transmit); /*********************************************************** * Name: vchi_msg_dequeue * * Arguments: VCHI_SERVICE_HANDLE_T handle, * void *data, * uint32_t max_data_size_to_read, * uint32_t *actual_msg_size * VCHI_FLAGS_T flags * * Description: Routine to dequeue a message into the supplied buffer * * Returns: int32_t - success == 0 * ***********************************************************/ int32_t vchi_msg_dequeue(VCHI_SERVICE_HANDLE_T handle, void *data, uint32_t max_data_size_to_read, uint32_t *actual_msg_size, VCHI_FLAGS_T flags) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; VCHIQ_HEADER_T *header; WARN_ON((flags != VCHI_FLAGS_NONE) && (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE)); if (flags == VCHI_FLAGS_NONE) if (vchiu_queue_is_empty(&service->queue)) return -1; header = vchiu_queue_pop(&service->queue); memcpy(data, header->data, header->size < max_data_size_to_read ? header->size : max_data_size_to_read); *actual_msg_size = header->size; vchiq_release_message(service->handle, header); return 0; } EXPORT_SYMBOL(vchi_msg_dequeue); /*********************************************************** * Name: vchi_msg_queuev * * Arguments: VCHI_SERVICE_HANDLE_T handle, * VCHI_MSG_VECTOR_T *vector, * uint32_t count, * VCHI_FLAGS_T flags, * void *msg_handle * * Description: Thin wrapper to queue a message onto a connection * * Returns: int32_t - success == 0 * ***********************************************************/ vchiq_static_assert(sizeof(VCHI_MSG_VECTOR_T) == sizeof(VCHIQ_ELEMENT_T)); vchiq_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_base) == offsetof(VCHIQ_ELEMENT_T, data)); vchiq_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_len) == offsetof(VCHIQ_ELEMENT_T, size)); int32_t vchi_msg_queuev(VCHI_SERVICE_HANDLE_T handle, VCHI_MSG_VECTOR_T *vector, uint32_t count, VCHI_FLAGS_T flags, void *msg_handle) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; (void)msg_handle; WARN_ON(flags != VCHI_FLAGS_BLOCK_UNTIL_QUEUED); return vchiq_status_to_vchi(vchiq_queue_message(service->handle, (const VCHIQ_ELEMENT_T *)vector, count)); } EXPORT_SYMBOL(vchi_msg_queuev); /*********************************************************** * Name: vchi_held_msg_release * * Arguments: VCHI_HELD_MSG_T *message * * Description: Routine to release a held message (after it has been read with * vchi_msg_hold) * * Returns: int32_t - success == 0 * ***********************************************************/ int32_t vchi_held_msg_release(VCHI_HELD_MSG_T *message) { vchiq_release_message((VCHIQ_SERVICE_HANDLE_T)message->service, (VCHIQ_HEADER_T *)message->message); return 0; } /*********************************************************** * Name: vchi_msg_hold * * Arguments: VCHI_SERVICE_HANDLE_T handle, * void **data, * uint32_t *msg_size, * VCHI_FLAGS_T flags, * VCHI_HELD_MSG_T *message_handle * * Description: Routine to return a pointer to the current message (to allow * in place processing). The message is dequeued - don't forget * to release the message using vchi_held_msg_release when you're * finished. * * Returns: int32_t - success == 0 * ***********************************************************/ int32_t vchi_msg_hold(VCHI_SERVICE_HANDLE_T handle, void **data, uint32_t *msg_size, VCHI_FLAGS_T flags, VCHI_HELD_MSG_T *message_handle) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; VCHIQ_HEADER_T *header; WARN_ON((flags != VCHI_FLAGS_NONE) && (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE)); if (flags == VCHI_FLAGS_NONE) if (vchiu_queue_is_empty(&service->queue)) return -1; header = vchiu_queue_pop(&service->queue); *data = header->data; *msg_size = header->size; message_handle->service = (struct opaque_vchi_service_t *)service->handle; message_handle->message = header; return 0; } /*********************************************************** * Name: vchi_initialise * * Arguments: VCHI_INSTANCE_T *instance_handle * VCHI_CONNECTION_T **connections * const uint32_t num_connections * * Description: Initialises the hardware but does not transmit anything * When run as a Host App this will be called twice hence the need * to malloc the state information * * Returns: 0 if successful, failure otherwise * ***********************************************************/ int32_t vchi_initialise(VCHI_INSTANCE_T *instance_handle) { VCHIQ_INSTANCE_T instance; VCHIQ_STATUS_T status; status = vchiq_initialise(&instance); *instance_handle = (VCHI_INSTANCE_T)instance; return vchiq_status_to_vchi(status); } EXPORT_SYMBOL(vchi_initialise); /*********************************************************** * Name: vchi_connect * * Arguments: VCHI_CONNECTION_T **connections * const uint32_t num_connections * VCHI_INSTANCE_T instance_handle) * * Description: Starts the command service on each connection, * causing INIT messages to be pinged back and forth * * Returns: 0 if successful, failure otherwise * ***********************************************************/ int32_t vchi_connect(VCHI_CONNECTION_T **connections, const uint32_t num_connections, VCHI_INSTANCE_T instance_handle) { VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle; (void)connections; (void)num_connections; return vchiq_connect(instance); } EXPORT_SYMBOL(vchi_connect); /*********************************************************** * Name: vchi_disconnect * * Arguments: VCHI_INSTANCE_T instance_handle * * Description: Stops the command service on each connection, * causing DE-INIT messages to be pinged back and forth * * Returns: 0 if successful, failure otherwise * ***********************************************************/ int32_t vchi_disconnect(VCHI_INSTANCE_T instance_handle) { VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle; return vchiq_status_to_vchi(vchiq_shutdown(instance)); } EXPORT_SYMBOL(vchi_disconnect); /*********************************************************** * Name: vchi_service_open * Name: vchi_service_create * * Arguments: VCHI_INSTANCE_T *instance_handle * SERVICE_CREATION_T *setup, * VCHI_SERVICE_HANDLE_T *handle * * Description: Routine to open a service * * Returns: int32_t - success == 0 * ***********************************************************/ static VCHIQ_STATUS_T shim_callback(VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header, VCHIQ_SERVICE_HANDLE_T handle, void *bulk_user) { SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)VCHIQ_GET_SERVICE_USERDATA(handle); if (!service->callback) goto release; switch (reason) { case VCHIQ_MESSAGE_AVAILABLE: vchiu_queue_push(&service->queue, header); service->callback(service->callback_param, VCHI_CALLBACK_MSG_AVAILABLE, NULL); goto done; break; case VCHIQ_BULK_TRANSMIT_DONE: service->callback(service->callback_param, VCHI_CALLBACK_BULK_SENT, bulk_user); break; case VCHIQ_BULK_RECEIVE_DONE: service->callback(service->callback_param, VCHI_CALLBACK_BULK_RECEIVED, bulk_user); break; case VCHIQ_SERVICE_CLOSED: service->callback(service->callback_param, VCHI_CALLBACK_SERVICE_CLOSED, NULL); break; case VCHIQ_SERVICE_OPENED: /* No equivalent VCHI reason */ break; case VCHIQ_BULK_TRANSMIT_ABORTED: service->callback(service->callback_param, VCHI_CALLBACK_BULK_TRANSMIT_ABORTED, bulk_user); break; case VCHIQ_BULK_RECEIVE_ABORTED: service->callback(service->callback_param, VCHI_CALLBACK_BULK_RECEIVE_ABORTED, bulk_user); break; default: WARN(1, "not supported\n"); break; } release: vchiq_release_message(service->handle, header); done: return VCHIQ_SUCCESS; } static SHIM_SERVICE_T *service_alloc(VCHIQ_INSTANCE_T instance, SERVICE_CREATION_T *setup) { SHIM_SERVICE_T *service = kzalloc(sizeof(SHIM_SERVICE_T), GFP_KERNEL); (void)instance; if (service) { if (vchiu_queue_init(&service->queue, 64)) { service->callback = setup->callback; service->callback_param = setup->callback_param; } else { kfree(service); service = NULL; } } return service; } static void service_free(SHIM_SERVICE_T *service) { if (service) { vchiu_queue_delete(&service->queue); kfree(service); } } int32_t vchi_service_open(VCHI_INSTANCE_T instance_handle, SERVICE_CREATION_T *setup, VCHI_SERVICE_HANDLE_T *handle) { VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle; SHIM_SERVICE_T *service = service_alloc(instance, setup); *handle = (VCHI_SERVICE_HANDLE_T)service; if (service) { VCHIQ_SERVICE_PARAMS_T params; VCHIQ_STATUS_T status; memset(¶ms, 0, sizeof(params)); params.fourcc = setup->service_id; params.callback = shim_callback; params.userdata = service; params.version = setup->version.version; params.version_min = setup->version.version_min; status = vchiq_open_service(instance, ¶ms, &service->handle); if (status != VCHIQ_SUCCESS) { service_free(service); service = NULL; *handle = NULL; } } return (service != NULL) ? 0 : -1; } EXPORT_SYMBOL(vchi_service_open); int32_t vchi_service_create(VCHI_INSTANCE_T instance_handle, SERVICE_CREATION_T *setup, VCHI_SERVICE_HANDLE_T *handle) { VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle; SHIM_SERVICE_T *service = service_alloc(instance, setup); *handle = (VCHI_SERVICE_HANDLE_T)service; if (service) { VCHIQ_SERVICE_PARAMS_T params; VCHIQ_STATUS_T status; memset(¶ms, 0, sizeof(params)); params.fourcc = setup->service_id; params.callback = shim_callback; params.userdata = service; params.version = setup->version.version; params.version_min = setup->version.version_min; status = vchiq_add_service(instance, ¶ms, &service->handle); if (status != VCHIQ_SUCCESS) { service_free(service); service = NULL; *handle = NULL; } } return (service != NULL) ? 0 : -1; } EXPORT_SYMBOL(vchi_service_create); int32_t vchi_service_close(const VCHI_SERVICE_HANDLE_T handle) { int32_t ret = -1; SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; if (service) { VCHIQ_STATUS_T status = vchiq_close_service(service->handle); if (status == VCHIQ_SUCCESS) { service_free(service); service = NULL; } ret = vchiq_status_to_vchi(status); } return ret; } EXPORT_SYMBOL(vchi_service_close); int32_t vchi_service_destroy(const VCHI_SERVICE_HANDLE_T handle) { int32_t ret = -1; SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; if (service) { VCHIQ_STATUS_T status = vchiq_remove_service(service->handle); if (status == VCHIQ_SUCCESS) { service_free(service); service = NULL; } ret = vchiq_status_to_vchi(status); } return ret; } EXPORT_SYMBOL(vchi_service_destroy); int32_t vchi_get_peer_version( const VCHI_SERVICE_HANDLE_T handle, short *peer_version ) { int32_t ret = -1; SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; if(service) { VCHIQ_STATUS_T status = vchiq_get_peer_version(service->handle, peer_version); ret = vchiq_status_to_vchi( status ); } return ret; } EXPORT_SYMBOL(vchi_get_peer_version); #ifdef notyet /* ---------------------------------------------------------------------- * read a uint32_t from buffer. * network format is defined to be little endian * -------------------------------------------------------------------- */ uint32_t vchi_readbuf_uint32(const void *_ptr) { const unsigned char *ptr = _ptr; return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24); } /* ---------------------------------------------------------------------- * write a uint32_t to buffer. * network format is defined to be little endian * -------------------------------------------------------------------- */ void vchi_writebuf_uint32(void *_ptr, uint32_t value) { unsigned char *ptr = _ptr; ptr[0] = (unsigned char)((value >> 0) & 0xFF); ptr[1] = (unsigned char)((value >> 8) & 0xFF); ptr[2] = (unsigned char)((value >> 16) & 0xFF); ptr[3] = (unsigned char)((value >> 24) & 0xFF); } /* ---------------------------------------------------------------------- * read a uint16_t from buffer. * network format is defined to be little endian * -------------------------------------------------------------------- */ uint16_t vchi_readbuf_uint16(const void *_ptr) { const unsigned char *ptr = _ptr; return ptr[0] | (ptr[1] << 8); } /* ---------------------------------------------------------------------- * write a uint16_t into the buffer. * network format is defined to be little endian * -------------------------------------------------------------------- */ void vchi_writebuf_uint16(void *_ptr, uint16_t value) { unsigned char *ptr = _ptr; ptr[0] = (value >> 0) & 0xFF; ptr[1] = (value >> 8) & 0xFF; } #endif /*********************************************************** * Name: vchi_service_use * * Arguments: const VCHI_SERVICE_HANDLE_T handle * * Description: Routine to increment refcount on a service * * Returns: void * ***********************************************************/ int32_t vchi_service_use(const VCHI_SERVICE_HANDLE_T handle) { int32_t ret = -1; SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; if (service) ret = vchiq_status_to_vchi(vchiq_use_service(service->handle)); return ret; } EXPORT_SYMBOL(vchi_service_use); /*********************************************************** * Name: vchi_service_release * * Arguments: const VCHI_SERVICE_HANDLE_T handle * * Description: Routine to decrement refcount on a service * * Returns: void * ***********************************************************/ int32_t vchi_service_release(const VCHI_SERVICE_HANDLE_T handle) { int32_t ret = -1; SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; if (service) ret = vchiq_status_to_vchi( vchiq_release_service(service->handle)); return ret; } EXPORT_SYMBOL(vchi_service_release); CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_util.c 1004 1004 644 a7b1f9d9a03bb6795579b07adb481bfc 3929 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "vchiq_util.h" static inline int is_pow2(int i) { return i && !(i & (i - 1)); } int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size) { WARN_ON(!is_pow2(size)); queue->size = size; queue->read = 0; queue->write = 0; _sema_init(&queue->pop, 0); _sema_init(&queue->push, 0); queue->storage = kzalloc(size * sizeof(VCHIQ_HEADER_T *), GFP_KERNEL); if (queue->storage == NULL) { vchiu_queue_delete(queue); return 0; } return 1; } void vchiu_queue_delete(VCHIU_QUEUE_T *queue) { if (queue->storage != NULL) kfree(queue->storage); } int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue) { return queue->read == queue->write; } int vchiu_queue_is_full(VCHIU_QUEUE_T *queue) { return queue->write == queue->read + queue->size; } void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header) { while (queue->write == queue->read + queue->size) { if (down_interruptible(&queue->pop) != 0) { flush_signals(current); } } /* * Write to queue->storage must be visible after read from * queue->read */ smp_mb(); queue->storage[queue->write & (queue->size - 1)] = header; /* * Write to queue->storage must be visible before write to * queue->write */ smp_wmb(); queue->write++; up(&queue->push); } VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue) { while (queue->write == queue->read) { if (down_interruptible(&queue->push) != 0) { flush_signals(current); } } up(&queue->push); // We haven't removed anything from the queue. /* * Read from queue->storage must be visible after read from * queue->write */ smp_rmb(); return queue->storage[queue->read & (queue->size - 1)]; } VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue) { VCHIQ_HEADER_T *header; while (queue->write == queue->read) { if (down_interruptible(&queue->push) != 0) { flush_signals(current); } } /* * Read from queue->storage must be visible after read from * queue->write */ smp_rmb(); header = queue->storage[queue->read & (queue->size - 1)]; /* * Read from queue->storage must be visible before write to * queue->read */ smp_mb(); queue->read++; up(&queue->pop); return header; } CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_util.h 1004 1004 644 5645d0cc73d28a02fbb14c9b84294c8f 2473 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef VCHIQ_UTIL_H #define VCHIQ_UTIL_H #ifdef __FreeBSD__ #include #endif #include "vchiq_if.h" typedef struct { int size; int read; int write; struct semaphore pop; struct semaphore push; VCHIQ_HEADER_T **storage; } VCHIU_QUEUE_T; extern int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size); extern void vchiu_queue_delete(VCHIU_QUEUE_T *queue); extern int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue); extern int vchiu_queue_is_full(VCHIU_QUEUE_T *queue); extern void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header); extern VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue); extern VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue); #endif CTMFM sys/contrib/vchiq/interface/vchiq_arm/vchiq_version.c 1004 1004 644 5184c16dc25e286be7ad1b7765e89c27 2436 /** * Copyright (c) 2010-2012 Broadcom. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "vchiq_build_info.h" #include VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_hostname, "dc4-arm-01" ); VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_version, "9245b4c35b99b3870e1f7dc598c5692b3c66a6f0 (tainted)" ); VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_time, __TIME__ ); VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_date, __DATE__ ); const char *vchiq_get_build_hostname( void ) { return vchiq_build_hostname; } const char *vchiq_get_build_version( void ) { return vchiq_build_version; } const char *vchiq_get_build_date( void ) { return vchiq_build_date; } const char *vchiq_get_build_time( void ) { return vchiq_build_time; } CTMFM sys/dev/cxgbe/if_cxl.c 1004 1004 644 ea46732bb27916bd5d4b25c60cd958bb 1854 /*- * Copyright (c) 2015 Chelsio Communications, Inc. * All rights reserved. * Written by: Navdeep Parhar * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD: head/sys/dev/cxgbe/if_cxl.c 278303 2015-02-06 01:10:04Z np $"); #include #include #include static int mod_event(module_t mod, int cmd, void *arg) { return (0); } static moduledata_t if_cxl_mod = {"if_cxl", mod_event}; DECLARE_MODULE(if_cxl, if_cxl_mod, SI_SUB_EXEC, SI_ORDER_ANY); MODULE_VERSION(if_cxl, 1); MODULE_DEPEND(if_cxl, cxl, 1, 1, 1); CTMFN sys/dev/sfxge/common/efsys.h 1004 1004 644 9ec12f3bddf2afb96c37485f27ef2622 3f210700688714c626b31653c374782d 5968 d29 1 a29 1 * $FreeBSD: head/sys/dev/sfxge/common/efsys.h 278254 2015-02-05 12:08:25Z arybchik $ a53 3 #if defined(__x86_64__) #define EFSYS_USE_UINT64 1 #else a54 1 #endif a400 20 #if defined(__x86_64__) #define EFSYS_MEM_READQ(_esmp, _offset, _eqp) \ do { \ uint64_t *addr; \ \ _NOTE(CONSTANTCONDITION) \ KASSERT(IS_P2ALIGNED(_offset, sizeof (efx_qword_t)), \ ("not power of 2 aligned")); \ \ addr = (void *)((_esmp)->esm_base + (_offset)); \ \ (_eqp)->eq_u64[0] = *addr; \ \ EFSYS_PROBE3(mem_readq, unsigned int, (_offset), \ uint32_t, (_eqp)->eq_u32[1], \ uint32_t, (_eqp)->eq_u32[0]); \ \ _NOTE(CONSTANTCONDITION) \ } while (B_FALSE) #else a419 1 #endif a420 23 #if defined(__x86_64__) #define EFSYS_MEM_READO(_esmp, _offset, _eop) \ do { \ uint64_t *addr; \ \ _NOTE(CONSTANTCONDITION) \ KASSERT(IS_P2ALIGNED(_offset, sizeof (efx_oword_t)), \ ("not power of 2 aligned")); \ \ addr = (void *)((_esmp)->esm_base + (_offset)); \ \ (_eop)->eo_u64[0] = *addr++; \ (_eop)->eo_u64[1] = *addr; \ \ EFSYS_PROBE5(mem_reado, unsigned int, (_offset), \ uint32_t, (_eop)->eo_u32[3], \ uint32_t, (_eop)->eo_u32[2], \ uint32_t, (_eop)->eo_u32[1], \ uint32_t, (_eop)->eo_u32[0]); \ \ _NOTE(CONSTANTCONDITION) \ } while (B_FALSE) #else a443 1 #endif a462 21 #if defined(__x86_64__) #define EFSYS_MEM_WRITEQ(_esmp, _offset, _eqp) \ do { \ uint64_t *addr; \ \ _NOTE(CONSTANTCONDITION) \ KASSERT(IS_P2ALIGNED(_offset, sizeof (efx_qword_t)), \ ("not power of 2 aligned")); \ \ EFSYS_PROBE3(mem_writeq, unsigned int, (_offset), \ uint32_t, (_eqp)->eq_u32[1], \ uint32_t, (_eqp)->eq_u32[0]); \ \ addr = (void *)((_esmp)->esm_base + (_offset)); \ \ *addr = (_eqp)->eq_u64[0]; \ \ _NOTE(CONSTANTCONDITION) \ } while (B_FALSE) #else a481 1 #endif a482 23 #if defined(__x86_64__) #define EFSYS_MEM_WRITEO(_esmp, _offset, _eop) \ do { \ uint64_t *addr; \ \ _NOTE(CONSTANTCONDITION) \ KASSERT(IS_P2ALIGNED(_offset, sizeof (efx_oword_t)), \ ("not power of 2 aligned")); \ \ EFSYS_PROBE5(mem_writeo, unsigned int, (_offset), \ uint32_t, (_eop)->eo_u32[3], \ uint32_t, (_eop)->eo_u32[2], \ uint32_t, (_eop)->eo_u32[1], \ uint32_t, (_eop)->eo_u32[0]); \ \ addr = (void *)((_esmp)->esm_base + (_offset)); \ \ *addr++ = (_eop)->eo_u64[0]; \ *addr = (_eop)->eo_u64[1]; \ \ _NOTE(CONSTANTCONDITION) \ } while (B_FALSE) #else a505 1 #endif a560 1 #if defined(__x86_64__) a568 47 (_eqp)->eq_u64[0] = bus_space_read_8((_esbp)->esb_tag, \ (_esbp)->esb_handle, (_offset)); \ \ EFSYS_PROBE3(bar_readq, unsigned int, (_offset), \ uint32_t, (_eqp)->eq_u32[1], \ uint32_t, (_eqp)->eq_u32[0]); \ \ mtx_unlock(&((_esbp)->esb_lock)); \ _NOTE(CONSTANTCONDITION) \ } while (B_FALSE) #define EFSYS_BAR_READO(_esbp, _offset, _eop, _lock) \ do { \ _NOTE(CONSTANTCONDITION) \ KASSERT(IS_P2ALIGNED(_offset, sizeof (efx_oword_t)), \ ("not power of 2 aligned")); \ \ _NOTE(CONSTANTCONDITION) \ if (_lock) \ mtx_lock(&((_esbp)->esb_lock)); \ \ (_eop)->eo_u64[0] = bus_space_read_8((_esbp)->esb_tag, \ (_esbp)->esb_handle, (_offset)); \ (_eop)->eo_u64[1] = bus_space_read_8((_esbp)->esb_tag, \ (_esbp)->esb_handle, (_offset+8)); \ \ EFSYS_PROBE5(bar_reado, unsigned int, (_offset), \ uint32_t, (_eop)->eo_u32[3], \ uint32_t, (_eop)->eo_u32[2], \ uint32_t, (_eop)->eo_u32[1], \ uint32_t, (_eop)->eo_u32[0]); \ \ _NOTE(CONSTANTCONDITION) \ if (_lock) \ mtx_unlock(&((_esbp)->esb_lock)); \ _NOTE(CONSTANTCONDITION) \ } while (B_FALSE) #else #define EFSYS_BAR_READQ(_esbp, _offset, _eqp) \ do { \ _NOTE(CONSTANTCONDITION) \ KASSERT(IS_P2ALIGNED(_offset, sizeof (efx_qword_t)), \ ("not power of 2 aligned")); \ \ mtx_lock(&((_esbp)->esb_lock)); \ \ a611 1 #endif a634 1 #if defined(__x86_64__) a646 19 bus_space_write_8((_esbp)->esb_tag, (_esbp)->esb_handle,\ (_offset), (_eqp)->eq_u64[0]); \ \ mtx_unlock(&((_esbp)->esb_lock)); \ _NOTE(CONSTANTCONDITION) \ } while (B_FALSE) #else #define EFSYS_BAR_WRITEQ(_esbp, _offset, _eqp) \ do { \ _NOTE(CONSTANTCONDITION) \ KASSERT(IS_P2ALIGNED(_offset, sizeof (efx_qword_t)), \ ("not power of 2 aligned")); \ \ mtx_lock(&((_esbp)->esb_lock)); \ \ EFSYS_PROBE3(bar_writeq, unsigned int, (_offset), \ uint32_t, (_eqp)->eq_u32[1], \ uint32_t, (_eqp)->eq_u32[0]); \ \ a654 1 #endif a655 1 #if defined(__x86_64__) a671 28 bus_space_write_8((_esbp)->esb_tag, (_esbp)->esb_handle,\ (_offset), (_eop)->eo_u64[0]); \ bus_space_write_8((_esbp)->esb_tag, (_esbp)->esb_handle,\ (_offset+8), (_eop)->eo_u64[1]); \ \ _NOTE(CONSTANTCONDITION) \ if (_lock) \ mtx_unlock(&((_esbp)->esb_lock)); \ _NOTE(CONSTANTCONDITION) \ } while (B_FALSE) #else #define EFSYS_BAR_WRITEO(_esbp, _offset, _eop, _lock) \ do { \ _NOTE(CONSTANTCONDITION) \ KASSERT(IS_P2ALIGNED(_offset, sizeof (efx_oword_t)), \ ("not power of 2 aligned")); \ \ _NOTE(CONSTANTCONDITION) \ if (_lock) \ mtx_lock(&((_esbp)->esb_lock)); \ \ EFSYS_PROBE5(bar_writeo, unsigned int, (_offset), \ uint32_t, (_eop)->eo_u32[3], \ uint32_t, (_eop)->eo_u32[2], \ uint32_t, (_eop)->eo_u32[1], \ uint32_t, (_eop)->eo_u32[0]); \ \ a685 1 #endif CTMFN sys/dev/sfxge/sfxge_tx.c 1004 1004 644 da6119fee3605380a37fb4ecc7a28abf 67395d1531d8825552014c7ec6ae4ef3 425 d46 1 a46 1 __FBSDID("$FreeBSD: head/sys/dev/sfxge/sfxge_tx.c 278255 2015-02-05 12:10:23Z arybchik $"); d1097 1 a1097 2 SFXGE_TSO_MAX_DESC - (1 + SFXGE_TX_MAPPING_MAX_SEG)) { txq->tso_pdrop_too_many++; a1098 1 } d1101 1 a1101 2 next_id))) { txq->tso_pdrop_no_rsrc++; a1102 1 } a1518 2 SFXGE_TX_STAT(tso_pdrop_too_many, tso_pdrop_too_many), SFXGE_TX_STAT(tso_pdrop_no_rsrc, tso_pdrop_no_rsrc), CTMFN sys/dev/sfxge/sfxge_tx.h 1004 1004 644 134f81b5c31dc2d7be5ee371295fbbfe 1704886b3762f1d0a569f786b7a885fe 174 d29 1 a29 1 * $FreeBSD: head/sys/dev/sfxge/sfxge_tx.h 278255 2015-02-05 12:10:23Z arybchik $ a203 2 unsigned long tso_pdrop_too_many; unsigned long tso_pdrop_no_rsrc; CTMFN sys/dev/uart/uart_bus_pci.c 1004 1004 644 62d289d2bc771e7c58f235e508df360b 883cc5532f33ff8747c67f1d576e225c 187 d28 1 a28 1 __FBSDID("$FreeBSD: head/sys/dev/uart/uart_bus_pci.c 278292 2015-02-05 21:50:51Z jhb $"); a123 1 { 0x8086, 0x2a47, 0xffff, 0, "Mobile 4 Series Chipset KT Controller", 0x10 }, CTMFN sys/dev/vt/hw/vga/vt_vga.c 1004 1004 644 19fc1265c5a1d58374a16923c84fb45d 86e1bff39b1743c71bfcc27b5f5f0b54 161 d34 1 a34 1 __FBSDID("$FreeBSD: head/sys/dev/vt/hw/vga/vt_vga.c 278276 2015-02-05 19:36:29Z rpaulo $"); d1266 1 a1266 2 device_set_desc(dev, "VT VGA driver"); CTMFN sys/kern/subr_bus.c 1004 1004 644 15ca25a91e4a6b7006071e6ee01d4081 459f2e72339333403927bf827eb797cc 197 d28 1 a28 1 __FBSDID("$FreeBSD: head/sys/kern/subr_bus.c 278299 2015-02-05 22:42:44Z jhb $"); d131 9 d3656 1 a3656 1 child->flags |= DF_SUSPENDED; d3671 1 a3671 1 child->flags &= ~DF_SUSPENDED; CTMFN sys/modules/cxgbe/Makefile 1004 1004 644 1cb3053e0c37c1dcaa4227d6cab8ce6b c13730149929f5b12248aee38eef9351 108 d2 1 a2 1 # $FreeBSD: head/sys/modules/cxgbe/Makefile 278303 2015-02-06 01:10:04Z np $ a8 1 SUBDIR+= if_cxl CTMDM sys/modules/cxgbe/if_cxl 1004 1004 755 CTMFM sys/modules/cxgbe/if_cxl/Makefile 1004 1004 644 3d48af691ff7481b3373445e43ccac41 195 # # $FreeBSD: head/sys/modules/cxgbe/if_cxl/Makefile 278303 2015-02-06 01:10:04Z np $ # CXGBE= ${.CURDIR}/../../../dev/cxgbe .PATH: ${CXGBE} KMOD= if_cxl SRCS= if_cxl.c .include CTMFN sys/netinet6/in6.c 1004 1004 644 802ce06ec832387835b1ef203a80a8b3 2eb7062f8d0d0da580846c8144908ddb 212 d64 1 a64 1 __FBSDID("$FreeBSD: head/sys/netinet6/in6.c 278268 2015-02-05 16:29:26Z ae $"); a1335 1 char ip6buf[INET6_ADDRSTRLEN]; d1359 1 a1359 1 "%s has no prefix\n", ip6_sprintf(ip6buf, IA6_IN6(ia)))); CTMFN sys/netpfil/ipfw/ip_fw_iface.c 1004 1004 644 549d6edac2dce1f5ab538dab1210af38 5bfa50f8030a5dbbeaf2d6e239ac0e75 214 d27 1 a27 1 __FBSDID("$FreeBSD: head/sys/netpfil/ipfw/ip_fw_iface.c 278259 2015-02-05 13:49:04Z melifaro $"); d400 1 a400 1 * Must be called while holding UH lock. a406 2 IPFW_UH_WLOCK_ASSERT(ch); d410 1 d413 1 CTMFN sys/netpfil/ipfw/ip_fw_nat.c 1004 1004 644 cbbc00ac588c0abc5fcbbdf1f7815cef 6af8466c55d4307bf5a729d90d75c2d9 223 d28 1 a28 1 __FBSDID("$FreeBSD: head/sys/netpfil/ipfw/ip_fw_nat.c 278264 2015-02-05 14:54:53Z melifaro $"); d694 1 a694 1 sz = sizeof(ipfw_obj_header) + sizeof(struct nat44_cfg_nat); d702 1 a702 1 if (sd->valsize < sz) { CTMFN sys/netpfil/ipfw/ip_fw_private.h 1004 1004 644 5209df88e3cacae80e593896877975fd 1ea9e2c9524a4f9ca476177301fb68be 190 d25 1 a25 1 * $FreeBSD: head/sys/netpfil/ipfw/ip_fw_private.h 278259 2015-02-05 13:49:04Z melifaro $ a431 1 #define IPFW_UH_UNLOCK_ASSERT(_chain) rw_assert(&(_chain)->uh_lock, RA_UNLOCKED) CTMFN sys/netpfil/ipfw/ip_fw_table.c 1004 1004 644 7a087c3058e501f0fe3af301b5faa421 3ad2a9e8c7bc88f4e7b13f66a8d84d5c 520 d29 1 a29 1 __FBSDID("$FreeBSD: head/sys/netpfil/ipfw/ip_fw_table.c 278259 2015-02-05 13:49:04Z melifaro $"); d1201 1 a1201 1 int error, need_gc; a1214 3 need_gc = 0; astate_new = NULL; memset(&ti_new, 0, sizeof(ti_new)); a1239 8 * Stage 1.5: if this is not the first attempt, destroy previous state */ if (need_gc != 0) { ta->destroy(astate_new, &ti_new); need_gc = 0; } /* d1265 1 a1265 2 /* Delay destroying data since we're holding UH lock */ need_gc = 1; a3044 1 /* UH lock MUST NOT be held */ CTMFN sys/netpfil/ipfw/ip_fw_table_algo.c 1004 1004 644 80ca2e24fbb84cfdece5d2979329ba47 5864f5634aa4bdadf0386ef0c80c19ce 406 d28 1 a28 1 __FBSDID("$FreeBSD: head/sys/netpfil/ipfw/ip_fw_table_algo.c 278259 2015-02-05 13:49:04Z melifaro $"); d100 1 a100 1 * MANDATORY, unlocked. (M_WAITOK). a2136 1 ipfw_iface_unref(ch, &ife->ic); a2155 1 IPFW_UH_WLOCK(ch); a2156 1 IPFW_UH_WUNLOCK(ch); d2336 1 a2336 1 /* Unlink notifier and deref */ a2337 1 ipfw_iface_unref(icfg->ch, &ife->ic); d2360 3 a2362 1 if (tb->ife != NULL) d2364 1 CTMFN sys/sys/bus.h 1004 1004 644 9f1702b19621ba99400bd0d30f5b5c78 f7b759623f869e646b589590ac276574 747 d26 1 a26 1 * $FreeBSD: head/sys/sys/bus.h 278299 2015-02-05 22:42:44Z jhb $ d73 1 a73 1 uint16_t dv_flags; /**< @brief flags for dev state */ a77 11 /* Flags exported via dv_flags. */ #define DF_ENABLED 0x01 /* device should be probed/attached */ #define DF_FIXEDCLASS 0x02 /* devclass specified at create time */ #define DF_WILDCARD 0x04 /* unit was originally wildcard */ #define DF_DESCMALLOCED 0x08 /* description was malloced */ #define DF_QUIET 0x10 /* don't print verbose attach message */ #define DF_DONENOMATCH 0x20 /* don't execute DEVICE_NOMATCH again */ #define DF_EXTERNALSOFTC 0x40 /* softc not allocated by us */ #define DF_REBID 0x80 /* Can rebid after attach */ #define DF_SUSPENDED 0x100 /* Device is suspended. */ CTMFN sys/sys/systm.h 1004 1004 644 80d98db27d9508e3599a46da66893c59 e926ddcdd3bbb6d414d57510bd568daa 88 d35 1 a35 1 * $FreeBSD: head/sys/sys/systm.h 278274 2015-02-05 19:17:37Z jkim $ d360 1 CTMFN sys/ufs/ffs/ffs_softdep.c 1004 1004 644 eb9b081fb7974488dff23f0a5925044b 17f70e6d8c36b83309409f9d194f4254 457 d43 1 a43 1 __FBSDID("$FreeBSD: head/sys/ufs/ffs/ffs_softdep.c 278257 2015-02-05 13:00:27Z kib $"); d1396 1 a1396 1 if ((ump->softdep_flags & (FLUSH_CLEANUP | FLUSH_EXIT)) == 0) d1426 1 a1426 1 if ((ump->softdep_flags & (FLUSH_CLEANUP | FLUSH_EXIT)) == 0) d1428 2 a1429 1 wakeup(&ump->softdep_flushtd); d1474 1 a1474 1 (FLUSH_CLEANUP | FLUSH_EXIT)) == 0) d1476 3 a1478 2 altump->um_softdep->sd_cleanups++; wakeup(&altump->softdep_flushtd); CTMDM tools/tools/qrndtest 1004 1004 755 CTMFM tools/tools/qrndtest/Makefile 1004 1004 644 8e0b6e0f0b100607d027c8505156ad50 144 # # $FreeBSD: head/tools/tools/qrndtest/Makefile 278294 2015-02-05 21:56:23Z jmg $ # PROG = qrndtest SRCS = r.c MAN= .include CTMFM tools/tools/qrndtest/README 1004 1004 644 0177d339ba5c4088b87149659603a377 207 This is a really quick random testing that I wrote for adrian. If you want a real randomness tester, look at dieharder that has a much larger battery of tests and will tell you if your PRNG is good or not. CTMFM tools/tools/qrndtest/r.c 1004 1004 644 8ae5a5fe7bb0c81663f50e05e76e2f3b 2326 /*- * Copyright 2015 John-Mark Gurney. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: head/tools/tools/qrndtest/r.c 278280 2015-02-05 20:23:36Z jmg $ * */ #include #include #include #include typedef uint32_t (*rndfun_t)(); uint32_t randomwrap() { return random(); } struct { const char *name; rndfun_t rndfun; } rndfuns[] = { { "random", randomwrap }, { "arc4random", arc4random }, { NULL, NULL }, }; int main(int argc, char *argv[]) { uint64_t vals[4] = {}; uint64_t avg; unsigned int i; rndfun_t f; if (argc == 1) f = rndfuns[0].rndfun; else { for (i = 0; rndfuns[i].name != NULL; i++) { if (strcasecmp(rndfuns[i].name, argv[1]) == 0) break; } if (rndfuns[i].name == NULL) return 1; f = rndfuns[i].rndfun; } for (;;) { vals[f() % 4]++; if (((i++) % (4*1024*1024)) == 0) { avg = vals[0] + vals[1] + vals[2] + vals[3]; avg /= 4; printf("%d: %ld %ld %ld %ld\n", i, vals[0] - avg, vals[1] - avg, vals[2] - avg, vals[3] - avg); } } return 0; } CTMFN usr.sbin/devinfo/devinfo.c 1004 1004 644 6db35d22a1ea83c568bc4c2138013a0f e23f3268cdab25e901cf3f3ff0b37d8d 239 d33 1 a33 1 __FBSDID("$FreeBSD: head/usr.sbin/devinfo/devinfo.c 278299 2015-02-05 22:42:44Z jhb $"); a148 4 if (!(dev->dd_flags & DF_ENABLED)) printf(" (disabled)"); else if (dev->dd_flags & DF_SUSPENDED) printf(" (suspended)"); CTMFN usr.sbin/syslogd/syslogd.c 1004 1004 644 b9248f190a05201b4c169d32618b5658 c24ed5a285c7fec1549ac4466180d88a 188 d43 1 a43 1 __FBSDID("$FreeBSD: head/usr.sbin/syslogd/syslogd.c 278297 2015-02-05 22:28:00Z dim $"); d1023 1 a1023 1 !strcmp(msg, f->f_prevline) && d1178 1 a1178 1 } else { d1181 2 CTM_END db4624ca44d3f12d66af01b0a71f6d35