2 * Copyright (c) 2010-2012 Broadcom. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions, and the following disclaimer,
9 * without modification.
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11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The names of the above-listed copyright holders may not be used
14 * to endorse or promote products derived from this software without
15 * specific prior written permission.
17 * ALTERNATIVELY, this software may be distributed under the terms of the
18 * GNU General Public License ("GPL") version 2, as published by the Free
19 * Software Foundation.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
22 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 #include <linux/mutex.h>
38 #include <linux/semaphore.h>
39 #include <linux/kthread.h>
41 #include "vchiq_cfg.h"
45 /* Run time control of log level, based on KERN_XXX level. */
46 #define VCHIQ_LOG_DEFAULT 4
47 #define VCHIQ_LOG_ERROR 3
48 #define VCHIQ_LOG_WARNING 4
49 #define VCHIQ_LOG_INFO 6
50 #define VCHIQ_LOG_TRACE 7
52 #define VCHIQ_LOG_PREFIX KERN_INFO "vchiq: "
54 #ifndef vchiq_log_error
55 #define vchiq_log_error(cat, fmt, ...) \
56 do { if (cat >= VCHIQ_LOG_ERROR) \
57 printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
59 #ifndef vchiq_log_warning
60 #define vchiq_log_warning(cat, fmt, ...) \
61 do { if (cat >= VCHIQ_LOG_WARNING) \
62 printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
64 #ifndef vchiq_log_info
65 #define vchiq_log_info(cat, fmt, ...) \
66 do { if (cat >= VCHIQ_LOG_INFO) \
67 printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
69 #ifndef vchiq_log_trace
70 #define vchiq_log_trace(cat, fmt, ...) \
71 do { if (cat >= VCHIQ_LOG_TRACE) \
72 printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
75 #define vchiq_loud_error(...) \
76 vchiq_log_error(vchiq_core_log_level, "===== " __VA_ARGS__)
78 #ifndef vchiq_static_assert
79 #define vchiq_static_assert(cond) __attribute__((unused)) \
80 extern int vchiq_static_assert[(cond) ? 1 : -1]
83 #define IS_POW2(x) (x && ((x & (x - 1)) == 0))
85 /* Ensure that the slot size and maximum number of slots are powers of 2 */
86 vchiq_static_assert(IS_POW2(VCHIQ_SLOT_SIZE));
87 vchiq_static_assert(IS_POW2(VCHIQ_MAX_SLOTS));
88 vchiq_static_assert(IS_POW2(VCHIQ_MAX_SLOTS_PER_SIDE));
90 #define VCHIQ_SLOT_MASK (VCHIQ_SLOT_SIZE - 1)
91 #define VCHIQ_SLOT_QUEUE_MASK (VCHIQ_MAX_SLOTS_PER_SIDE - 1)
92 #define VCHIQ_SLOT_ZERO_SLOTS ((sizeof(VCHIQ_SLOT_ZERO_T) + \
93 VCHIQ_SLOT_SIZE - 1) / VCHIQ_SLOT_SIZE)
95 #define VCHIQ_MSG_PADDING 0 /* - */
96 #define VCHIQ_MSG_CONNECT 1 /* - */
97 #define VCHIQ_MSG_OPEN 2 /* + (srcport, -), fourcc, client_id */
98 #define VCHIQ_MSG_OPENACK 3 /* + (srcport, dstport) */
99 #define VCHIQ_MSG_CLOSE 4 /* + (srcport, dstport) */
100 #define VCHIQ_MSG_DATA 5 /* + (srcport, dstport) */
101 #define VCHIQ_MSG_BULK_RX 6 /* + (srcport, dstport), data, size */
102 #define VCHIQ_MSG_BULK_TX 7 /* + (srcport, dstport), data, size */
103 #define VCHIQ_MSG_BULK_RX_DONE 8 /* + (srcport, dstport), actual */
104 #define VCHIQ_MSG_BULK_TX_DONE 9 /* + (srcport, dstport), actual */
105 #define VCHIQ_MSG_PAUSE 10 /* - */
106 #define VCHIQ_MSG_RESUME 11 /* - */
107 #define VCHIQ_MSG_REMOTE_USE 12 /* - */
108 #define VCHIQ_MSG_REMOTE_RELEASE 13 /* - */
109 #define VCHIQ_MSG_REMOTE_USE_ACTIVE 14 /* - */
111 #define VCHIQ_PORT_MAX (VCHIQ_MAX_SERVICES - 1)
112 #define VCHIQ_PORT_FREE 0x1000
113 #define VCHIQ_PORT_IS_VALID(port) (port < VCHIQ_PORT_FREE)
114 #define VCHIQ_MAKE_MSG(type, srcport, dstport) \
115 ((type<<24) | (srcport<<12) | (dstport<<0))
116 #define VCHIQ_MSG_TYPE(msgid) ((unsigned int)msgid >> 24)
117 #define VCHIQ_MSG_SRCPORT(msgid) \
118 (unsigned short)(((unsigned int)msgid >> 12) & 0xfff)
119 #define VCHIQ_MSG_DSTPORT(msgid) \
120 ((unsigned short)msgid & 0xfff)
122 #define VCHIQ_FOURCC_AS_4CHARS(fourcc) \
123 ((fourcc) >> 24) & 0xff, \
124 ((fourcc) >> 16) & 0xff, \
125 ((fourcc) >> 8) & 0xff, \
128 /* Ensure the fields are wide enough */
129 vchiq_static_assert(VCHIQ_MSG_SRCPORT(VCHIQ_MAKE_MSG(0, 0, VCHIQ_PORT_MAX))
131 vchiq_static_assert(VCHIQ_MSG_TYPE(VCHIQ_MAKE_MSG(0, VCHIQ_PORT_MAX, 0)) == 0);
132 vchiq_static_assert((unsigned int)VCHIQ_PORT_MAX <
133 (unsigned int)VCHIQ_PORT_FREE);
135 #define VCHIQ_MSGID_PADDING VCHIQ_MAKE_MSG(VCHIQ_MSG_PADDING, 0, 0)
136 #define VCHIQ_MSGID_CLAIMED 0x40000000
138 #define VCHIQ_FOURCC_INVALID 0x00000000
139 #define VCHIQ_FOURCC_IS_LEGAL(fourcc) (fourcc != VCHIQ_FOURCC_INVALID)
141 #define VCHIQ_BULK_ACTUAL_ABORTED -1
143 typedef uint32_t BITSET_T;
145 vchiq_static_assert((sizeof(BITSET_T) * 8) == 32);
147 #define BITSET_SIZE(b) ((b + 31) >> 5)
148 #define BITSET_WORD(b) (b >> 5)
149 #define BITSET_BIT(b) (1 << (b & 31))
150 #define BITSET_ZERO(bs) memset(bs, 0, sizeof(bs))
151 #define BITSET_IS_SET(bs, b) (bs[BITSET_WORD(b)] & BITSET_BIT(b))
152 #define BITSET_SET(bs, b) (bs[BITSET_WORD(b)] |= BITSET_BIT(b))
153 #define BITSET_CLR(bs, b) (bs[BITSET_WORD(b)] &= ~BITSET_BIT(b))
155 #if VCHIQ_ENABLE_STATS
156 #define VCHIQ_STATS_INC(state, stat) (state->stats. stat++)
157 #define VCHIQ_SERVICE_STATS_INC(service, stat) (service->stats. stat++)
158 #define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) \
159 (service->stats. stat += addend)
161 #define VCHIQ_STATS_INC(state, stat) ((void)0)
162 #define VCHIQ_SERVICE_STATS_INC(service, stat) ((void)0)
163 #define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) ((void)0)
168 #if VCHIQ_ENABLE_DEBUG
169 DEBUG_SLOT_HANDLER_COUNT,
170 DEBUG_SLOT_HANDLER_LINE,
174 DEBUG_AWAIT_COMPLETION_LINE,
175 DEBUG_DEQUEUE_MESSAGE_LINE,
176 DEBUG_SERVICE_CALLBACK_LINE,
177 DEBUG_MSG_QUEUE_FULL_COUNT,
178 DEBUG_COMPLETION_QUEUE_FULL_COUNT,
183 #if VCHIQ_ENABLE_DEBUG
185 #define DEBUG_INITIALISE(local) int *debug_ptr = (local)->debug;
186 #define DEBUG_TRACE(d) \
187 do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(); } while (0)
188 #define DEBUG_VALUE(d, v) \
189 do { debug_ptr[DEBUG_ ## d] = (v); dsb(); } while (0)
190 #define DEBUG_COUNT(d) \
191 do { debug_ptr[DEBUG_ ## d]++; dsb(); } while (0)
193 #else /* VCHIQ_ENABLE_DEBUG */
195 #define DEBUG_INITIALISE(local)
196 #define DEBUG_TRACE(d)
197 #define DEBUG_VALUE(d, v)
198 #define DEBUG_COUNT(d)
200 #endif /* VCHIQ_ENABLE_DEBUG */
203 VCHIQ_CONNSTATE_DISCONNECTED,
204 VCHIQ_CONNSTATE_CONNECTING,
205 VCHIQ_CONNSTATE_CONNECTED,
206 VCHIQ_CONNSTATE_PAUSING,
207 VCHIQ_CONNSTATE_PAUSE_SENT,
208 VCHIQ_CONNSTATE_PAUSED,
209 VCHIQ_CONNSTATE_RESUMING,
210 VCHIQ_CONNSTATE_PAUSE_TIMEOUT,
211 VCHIQ_CONNSTATE_RESUME_TIMEOUT
216 VCHIQ_SRVSTATE_HIDDEN,
217 VCHIQ_SRVSTATE_LISTENING,
218 VCHIQ_SRVSTATE_OPENING,
220 VCHIQ_SRVSTATE_OPENSYNC,
221 VCHIQ_SRVSTATE_CLOSESENT,
222 VCHIQ_SRVSTATE_CLOSERECVD,
223 VCHIQ_SRVSTATE_CLOSEWAIT,
224 VCHIQ_SRVSTATE_CLOSED
228 VCHIQ_POLL_TERMINATE,
240 typedef void (*VCHIQ_USERDATA_TERM_T)(void *userdata);
242 typedef struct vchiq_bulk_struct {
246 VCHI_MEM_HANDLE_T handle;
254 typedef struct vchiq_bulk_queue_struct {
255 int local_insert; /* Where to insert the next local bulk */
256 int remote_insert; /* Where to insert the next remote bulk (master) */
257 int process; /* Bulk to transfer next */
258 int remote_notify; /* Bulk to notify the remote client of next (mstr) */
259 int remove; /* Bulk to notify the local client of, and remove,
261 VCHIQ_BULK_T bulks[VCHIQ_NUM_SERVICE_BULKS];
262 } VCHIQ_BULK_QUEUE_T;
264 typedef struct remote_event_struct {
267 struct semaphore *event;
270 typedef struct opaque_platform_state_t *VCHIQ_PLATFORM_STATE_T;
272 typedef struct vchiq_state_struct VCHIQ_STATE_T;
274 typedef struct vchiq_slot_struct {
275 char data[VCHIQ_SLOT_SIZE];
278 typedef struct vchiq_slot_info_struct {
279 /* Use two counters rather than one to avoid the need for a mutex. */
284 typedef struct vchiq_service_struct {
285 VCHIQ_SERVICE_BASE_T base;
286 VCHIQ_SERVICE_HANDLE_T handle;
287 unsigned int ref_count;
289 VCHIQ_USERDATA_TERM_T userdata_term;
290 unsigned int localport;
291 unsigned int remoteport;
303 VCHIQ_STATE_T *state;
304 VCHIQ_INSTANCE_T instance;
306 int service_use_count;
308 VCHIQ_BULK_QUEUE_T bulk_tx;
309 VCHIQ_BULK_QUEUE_T bulk_rx;
311 struct semaphore remove_event;
312 struct semaphore bulk_remove_event;
313 struct mutex bulk_mutex;
315 struct service_stats_struct {
324 int bulk_aborted_count;
325 uint64_t ctrl_tx_bytes;
326 uint64_t ctrl_rx_bytes;
327 uint64_t bulk_tx_bytes;
328 uint64_t bulk_rx_bytes;
332 /* The quota information is outside VCHIQ_SERVICE_T so that it can be
333 statically allocated, since for accounting reasons a service's slot
334 usage is carried over between users of the same port number.
336 typedef struct vchiq_service_quota_struct {
337 unsigned short slot_quota;
338 unsigned short slot_use_count;
339 unsigned short message_quota;
340 unsigned short message_use_count;
341 struct semaphore quota_event;
342 int previous_tx_index;
343 } VCHIQ_SERVICE_QUOTA_T;
345 typedef struct vchiq_shared_state_struct {
347 /* A non-zero value here indicates that the content is valid. */
350 /* The first and last (inclusive) slots allocated to the owner. */
354 /* The slot allocated to synchronous messages from the owner. */
357 /* Signalling this event indicates that owner's slot handler thread
359 REMOTE_EVENT_T trigger;
361 /* Indicates the byte position within the stream where the next message
362 ** will be written. The least significant bits are an index into the
363 ** slot. The next bits are the index of the slot in slot_queue. */
366 /* This event should be signalled when a slot is recycled. */
367 REMOTE_EVENT_T recycle;
369 /* The slot_queue index where the next recycled slot will be written. */
370 int slot_queue_recycle;
372 /* This event should be signalled when a synchronous message is sent. */
373 REMOTE_EVENT_T sync_trigger;
375 /* This event should be signalled when a synchronous message has been
377 REMOTE_EVENT_T sync_release;
379 /* A circular buffer of slot indexes. */
380 int slot_queue[VCHIQ_MAX_SLOTS_PER_SIDE];
382 /* Debugging state */
383 int debug[DEBUG_MAX];
384 } VCHIQ_SHARED_STATE_T;
386 typedef struct vchiq_slot_zero_struct {
393 int max_slots_per_side;
394 int platform_data[2];
395 VCHIQ_SHARED_STATE_T master;
396 VCHIQ_SHARED_STATE_T slave;
397 VCHIQ_SLOT_INFO_T slots[VCHIQ_MAX_SLOTS];
400 struct vchiq_state_struct {
403 VCHIQ_CONNSTATE_T conn_state;
405 short version_common;
407 VCHIQ_SHARED_STATE_T *local;
408 VCHIQ_SHARED_STATE_T *remote;
409 VCHIQ_SLOT_T *slot_data;
411 unsigned short default_slot_quota;
412 unsigned short default_message_quota;
414 /* Event indicating connect message received */
415 struct semaphore connect;
417 /* Mutex protecting services */
419 VCHIQ_INSTANCE_T *instance;
421 /* Processes incoming messages */
422 struct task_struct *slot_handler_thread;
424 /* Processes recycled slots */
425 struct task_struct *recycle_thread;
427 /* Processes synchronous messages */
428 struct task_struct *sync_thread;
430 /* Local implementation of the trigger remote event */
431 struct semaphore trigger_event;
433 /* Local implementation of the recycle remote event */
434 struct semaphore recycle_event;
436 /* Local implementation of the sync trigger remote event */
437 struct semaphore sync_trigger_event;
439 /* Local implementation of the sync release remote event */
440 struct semaphore sync_release_event;
444 VCHIQ_SLOT_INFO_T *rx_info;
446 struct mutex slot_mutex;
448 struct mutex recycle_mutex;
450 struct mutex sync_mutex;
452 struct mutex bulk_transfer_mutex;
454 /* Indicates the byte position within the stream from where the next
455 ** message will be read. The least significant bits are an index into
456 ** the slot.The next bits are the index of the slot in
457 ** remote->slot_queue. */
460 /* A cached copy of local->tx_pos. Only write to local->tx_pos, and read
461 from remote->tx_pos. */
464 /* The slot_queue index of the slot to become available next. */
465 int slot_queue_available;
467 /* A flag to indicate if any poll has been requested */
470 /* Ths index of the previous slot used for data messages. */
471 int previous_data_index;
473 /* The number of slots occupied by data messages. */
474 unsigned short data_use_count;
476 /* The maximum number of slots to be occupied by data messages. */
477 unsigned short data_quota;
479 /* An array of bit sets indicating which services must be polled. */
480 atomic_t poll_services[BITSET_SIZE(VCHIQ_MAX_SERVICES)];
482 /* The number of the first unused service */
485 /* Signalled when a free slot becomes available. */
486 struct semaphore slot_available_event;
488 struct semaphore slot_remove_event;
490 /* Signalled when a free data slot becomes available. */
491 struct semaphore data_quota_event;
493 /* Incremented when there are bulk transfers which cannot be processed
494 * whilst paused and must be processed on resume */
497 struct state_stats_struct {
505 VCHIQ_SERVICE_T * services[VCHIQ_MAX_SERVICES];
506 VCHIQ_SERVICE_QUOTA_T service_quotas[VCHIQ_MAX_SERVICES];
507 VCHIQ_SLOT_INFO_T slot_info[VCHIQ_MAX_SLOTS];
509 VCHIQ_PLATFORM_STATE_T platform_state;
514 struct semaphore event;
518 extern spinlock_t bulk_waiter_spinlock;
520 extern int vchiq_core_log_level;
521 extern int vchiq_core_msg_log_level;
522 extern int vchiq_sync_log_level;
524 extern VCHIQ_STATE_T *vchiq_states[VCHIQ_MAX_STATES];
527 get_conn_state_name(VCHIQ_CONNSTATE_T conn_state);
529 extern VCHIQ_SLOT_ZERO_T *
530 vchiq_init_slots(void *mem_base, int mem_size);
532 extern VCHIQ_STATUS_T
533 vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero,
536 extern VCHIQ_STATUS_T
537 vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance);
539 extern VCHIQ_SERVICE_T *
540 vchiq_add_service_internal(VCHIQ_STATE_T *state,
541 const VCHIQ_SERVICE_PARAMS_T *params, int srvstate,
542 VCHIQ_INSTANCE_T instance, VCHIQ_USERDATA_TERM_T userdata_term);
544 extern VCHIQ_STATUS_T
545 vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id);
547 extern VCHIQ_STATUS_T
548 vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd);
551 vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service);
554 vchiq_free_service_internal(VCHIQ_SERVICE_T *service);
556 extern VCHIQ_STATUS_T
557 vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance);
559 extern VCHIQ_STATUS_T
560 vchiq_pause_internal(VCHIQ_STATE_T *state);
562 extern VCHIQ_STATUS_T
563 vchiq_resume_internal(VCHIQ_STATE_T *state);
566 remote_event_pollall(VCHIQ_STATE_T *state);
568 extern VCHIQ_STATUS_T
569 vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
570 VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
571 VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir);
574 vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state);
577 vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service);
580 vchiq_loud_error_header(void);
583 vchiq_loud_error_footer(void);
586 request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type);
588 static inline VCHIQ_SERVICE_T *
589 handle_to_service(VCHIQ_SERVICE_HANDLE_T handle)
591 VCHIQ_STATE_T *state = vchiq_states[(handle / VCHIQ_MAX_SERVICES) &
592 (VCHIQ_MAX_STATES - 1)];
596 return state->services[handle & (VCHIQ_MAX_SERVICES - 1)];
599 extern VCHIQ_SERVICE_T *
600 find_service_by_handle(VCHIQ_SERVICE_HANDLE_T handle);
602 extern VCHIQ_SERVICE_T *
603 find_service_by_port(VCHIQ_STATE_T *state, int localport);
605 extern VCHIQ_SERVICE_T *
606 find_service_for_instance(VCHIQ_INSTANCE_T instance,
607 VCHIQ_SERVICE_HANDLE_T handle);
609 extern VCHIQ_SERVICE_T *
610 find_closed_service_for_instance(VCHIQ_INSTANCE_T instance,
611 VCHIQ_SERVICE_HANDLE_T handle);
613 extern VCHIQ_SERVICE_T *
614 next_service_by_instance(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance,
618 lock_service(VCHIQ_SERVICE_T *service);
621 unlock_service(VCHIQ_SERVICE_T *service);
623 /* The following functions are called from vchiq_core, and external
624 ** implementations must be provided. */
626 extern VCHIQ_STATUS_T
627 vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk,
628 VCHI_MEM_HANDLE_T memhandle, void *offset, int size, int dir);
631 vchiq_transfer_bulk(VCHIQ_BULK_T *bulk);
634 vchiq_complete_bulk(VCHIQ_BULK_T *bulk);
636 extern VCHIQ_STATUS_T
637 vchiq_copy_from_user(void *dst, const void *src, int size);
640 remote_event_signal(REMOTE_EVENT_T *event);
643 vchiq_platform_check_suspend(VCHIQ_STATE_T *state);
646 vchiq_platform_paused(VCHIQ_STATE_T *state);
648 extern VCHIQ_STATUS_T
649 vchiq_platform_resume(VCHIQ_STATE_T *state);
652 vchiq_platform_resumed(VCHIQ_STATE_T *state);
655 vchiq_dump(void *dump_context, const char *str, int len);
658 vchiq_dump_platform_state(void *dump_context);
661 vchiq_dump_platform_instances(void *dump_context);
664 vchiq_dump_platform_service_state(void *dump_context,
665 VCHIQ_SERVICE_T *service);
667 extern VCHIQ_STATUS_T
668 vchiq_use_service_internal(VCHIQ_SERVICE_T *service);
670 extern VCHIQ_STATUS_T
671 vchiq_release_service_internal(VCHIQ_SERVICE_T *service);
674 vchiq_on_remote_use(VCHIQ_STATE_T *state);
677 vchiq_on_remote_release(VCHIQ_STATE_T *state);
679 extern VCHIQ_STATUS_T
680 vchiq_platform_init_state(VCHIQ_STATE_T *state);
682 extern VCHIQ_STATUS_T
683 vchiq_check_service(VCHIQ_SERVICE_T *service);
686 vchiq_on_remote_use_active(VCHIQ_STATE_T *state);
688 extern VCHIQ_STATUS_T
689 vchiq_send_remote_use(VCHIQ_STATE_T *state);
691 extern VCHIQ_STATUS_T
692 vchiq_send_remote_release(VCHIQ_STATE_T *state);
694 extern VCHIQ_STATUS_T
695 vchiq_send_remote_use_active(VCHIQ_STATE_T *state);
698 vchiq_platform_conn_state_changed(VCHIQ_STATE_T *state,
699 VCHIQ_CONNSTATE_T oldstate, VCHIQ_CONNSTATE_T newstate);
702 vchiq_platform_handle_timeout(VCHIQ_STATE_T *state);
705 vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate);
709 vchiq_log_dump_mem(const char *label, uint32_t addr, const void *voidMem,