Shad Ansari | 2f7f9be | 2017-06-07 13:34:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | <:copyright-BRCM:2016:DUAL/GPL:standard |
| 3 | |
| 4 | Broadcom Proprietary and Confidential.(c) 2016 Broadcom |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Unless you and Broadcom execute a separate written software license |
| 8 | agreement governing use of this software, this software is licensed |
| 9 | to you under the terms of the GNU General Public License version 2 |
| 10 | (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php, |
| 11 | with the following added to such license: |
| 12 | |
| 13 | As a special exception, the copyright holders of this software give |
| 14 | you permission to link this software with independent modules, and |
| 15 | to copy and distribute the resulting executable under terms of your |
| 16 | choice, provided that you also meet, for each linked independent |
| 17 | module, the terms and conditions of the license of that module. |
| 18 | An independent module is a module which is not derived from this |
| 19 | software. The special exception does not apply to any modifications |
| 20 | of the software. |
| 21 | |
| 22 | Not withstanding the above, under no circumstances may you combine |
| 23 | this software in any way with any other Broadcom software provided |
| 24 | under a license other than the GPL, without Broadcom's express prior |
| 25 | written consent. |
| 26 | |
| 27 | :> |
| 28 | */ |
| 29 | |
| 30 | #include "bcmos_system.h" |
| 31 | |
| 32 | /* task control blocks */ |
| 33 | STAILQ_HEAD(task_list, bcmos_task) task_list = STAILQ_HEAD_INITIALIZER(task_list); |
| 34 | |
| 35 | /* module control blocks */ |
| 36 | bcmos_module *bcmos_modules[BCMOS_MODULE_ID__NUM_OF]; |
| 37 | |
| 38 | /* event control blocks */ |
| 39 | bcmos_event *bcmos_events[BCMOS_EVENT_ID__NUM_OF]; |
| 40 | |
| 41 | /* Global trace level */ |
| 42 | bcmos_trace_level bcmos_sys_trace_level = BCMOS_TRACE_LEVEL_ERROR; |
| 43 | |
| 44 | /* Global OS mutex */ |
| 45 | bcmos_mutex bcmos_res_lock; |
| 46 | |
| 47 | /* Total memory occupied by block pools */ |
| 48 | uint32_t bcmos_total_blk_pool_size; |
| 49 | |
| 50 | /* Total memory occupied by message pools */ |
| 51 | uint32_t bcmos_total_msg_pool_size; |
| 52 | |
| 53 | f_bcmolt_sw_error_handler sw_error_handler; |
| 54 | |
| 55 | /* Block pools */ |
| 56 | static STAILQ_HEAD(blk_pool_list, bcmos_blk_pool) blk_pool_list = STAILQ_HEAD_INITIALIZER(blk_pool_list); |
| 57 | |
| 58 | /* Message pools */ |
| 59 | static STAILQ_HEAD(msg_pool_list, bcmos_blk_pool) msg_pool_list = STAILQ_HEAD_INITIALIZER(msg_pool_list); |
| 60 | |
| 61 | /* Message queues */ |
| 62 | static STAILQ_HEAD(msg_queue_list, bcmos_msg_queue) msg_queue_list = STAILQ_HEAD_INITIALIZER(msg_queue_list); |
| 63 | |
| 64 | /* Message queue groups */ |
| 65 | static STAILQ_HEAD(msg_qgroup_list, bcmos_msg_qgroup) msg_qgroup_list = STAILQ_HEAD_INITIALIZER(msg_qgroup_list); |
| 66 | |
| 67 | /* Lock used to protect msg registration / deregistration */ |
| 68 | static bcmos_fastlock bcmos_msg_register_lock; |
| 69 | |
| 70 | /* Shutdown mode: when this is set, we expect message handler deregistration to happen while messages are still being |
| 71 | * sent/received. We should handle this gracefully. */ |
| 72 | static bcmos_bool bcmos_msg_shutdown_mode = BCMOS_FALSE; |
| 73 | |
| 74 | /* Timer management block */ |
| 75 | typedef struct bcmos_timer_pool |
| 76 | { |
| 77 | bcmos_fastlock lock; /* Pool protection lock */ |
| 78 | bcmos_sys_timer sys_timer; /* System timer handle */ |
| 79 | uint32_t num_active_timers; /* Number of active timers in the pool */ |
| 80 | #ifdef BCMOS_TIMER_RB_TREE |
| 81 | RB_HEAD(bcmos_timers, bcmos_timer) pool; /* Timer pool. RB tree */ |
| 82 | #else |
| 83 | TAILQ_HEAD(bcmos_timers, bcmos_timer) pool; /* Timer pool: TAILQ */ |
| 84 | #endif |
| 85 | } bcmos_timer_pool; |
| 86 | |
| 87 | static int32_t _bcmos_timer_compare(bcmos_timer *t1, bcmos_timer *t2); |
| 88 | |
| 89 | /* |
| 90 | * Macros for RB-TREE and TAILQ-based timer tool implementations |
| 91 | */ |
| 92 | |
| 93 | #ifdef BCMOS_TIMER_RB_TREE |
| 94 | |
| 95 | #ifdef __arm__ |
| 96 | /* ARM compiler doesn't like unused inline functions. Disable the warning */ |
| 97 | #pragma diag_suppress 177 |
| 98 | #endif |
| 99 | |
| 100 | /* Generate RB tree functions */ |
| 101 | RB_GENERATE_INLINE(bcmos_timers, bcmos_timer, entry, _bcmos_timer_compare) |
| 102 | |
| 103 | #define TMR_POOL_INIT(tmr_pool) RB_INIT(&(tmr_pool)->pool) |
| 104 | #define TMR_POOL_INSERT(tmr_pool, tmr) RB_INSERT(bcmos_timers, &(tmr_pool)->pool, tmr) |
| 105 | #define TMR_POOL_REMOVE(tmr_pool, tmr) RB_REMOVE(bcmos_timers, &(tmr_pool)->pool, tmr) |
| 106 | #define TMR_POOL_FIRST(tmr_pool) RB_MIN(bcmos_timers, &(tmr_pool)->pool) |
| 107 | |
| 108 | #else |
| 109 | |
| 110 | #define TMR_POOL_INIT(tmr_pool) TAILQ_INIT(&(tmr_pool)->pool) |
| 111 | |
| 112 | #define TMR_POOL_INSERT(tmr_pool, tmr) \ |
| 113 | do { \ |
| 114 | bcmos_timer *_last = TAILQ_LAST(&(tmr_pool)->pool, bcmos_timers); \ |
| 115 | if (_last) \ |
| 116 | { \ |
| 117 | if (_bcmos_timer_compare(tmr, _last) >= 0) \ |
| 118 | { \ |
| 119 | TAILQ_INSERT_TAIL(&(tmr_pool)->pool, tmr, entry); \ |
| 120 | } \ |
| 121 | else \ |
| 122 | { \ |
| 123 | bcmos_timer *_t; \ |
| 124 | uint32_t iter = 0; \ |
| 125 | TAILQ_FOREACH(_t, &(tmr_pool)->pool, entry) \ |
| 126 | { \ |
| 127 | BUG_ON(iter >= (tmr_pool)->num_active_timers);\ |
| 128 | ++iter; \ |
| 129 | if (_bcmos_timer_compare(tmr, _t) <= 0) \ |
| 130 | { \ |
| 131 | TAILQ_INSERT_BEFORE(_t, tmr, entry); \ |
| 132 | break; \ |
| 133 | } \ |
| 134 | } \ |
| 135 | } \ |
| 136 | } \ |
| 137 | else \ |
| 138 | { \ |
| 139 | TAILQ_INSERT_HEAD(&(tmr_pool)->pool, tmr, entry); \ |
| 140 | } \ |
| 141 | ++(tmr_pool)->num_active_timers; \ |
| 142 | } while (0) |
| 143 | |
| 144 | #define TMR_POOL_REMOVE(tmr_pool, tmr) \ |
| 145 | do { \ |
| 146 | BUG_ON(!(tmr_pool)->num_active_timers); \ |
| 147 | TAILQ_REMOVE(&(tmr_pool)->pool, tmr, entry); \ |
| 148 | TAILQ_NEXT(tmr, entry) = NULL; \ |
| 149 | --(tmr_pool)->num_active_timers; \ |
| 150 | } while (0) |
| 151 | |
| 152 | #define TMR_POOL_FIRST(tmr_pool) TAILQ_FIRST(&(tmr_pool)->pool) |
| 153 | |
| 154 | #endif |
| 155 | |
| 156 | #define BCMOS_TIMER_IS_RUNNING(tmr) ((tmr->flags & BCMOS_TIMER_FLAG_RUNNING) != 0) |
| 157 | #define BCMOS_TIMER_IS_EXPIRED(tmr) ((tmr->flags & BCMOS_TIMER_FLAG_EXPIRED) != 0) |
| 158 | #define BCMOS_TIMER_IS_VALID(tmr) ((tmr->flags & BCMOS_TIMER_FLAG_VALID) != 0) |
| 159 | #define BCMOS_TIMER_IS_ACTIVE(tmr) ((tmr->flags & BCMOS_TIMER_FLAG_ACTIVE) != 0) |
| 160 | |
| 161 | static bcmos_bool bcmos_initialized; |
| 162 | static bcmos_timer_pool tmr_pool; |
| 163 | static void _sys_timer_handler(void *data); |
| 164 | |
| 165 | /* |
| 166 | * Print variables |
| 167 | */ |
| 168 | |
| 169 | static bcmos_print_redirect_mode print_redirect_mode; |
| 170 | static bcmos_print_redirect_cb print_redirect_cb; |
| 171 | static void *print_redirect_cb_data; |
| 172 | static bcmos_mutex bcmos_print_lock; |
| 173 | #ifdef BCMOS_BUF_POOL_SIZE |
| 174 | static bcmos_blk_pool sys_buf_pool; |
| 175 | static bcmos_errno bcmos_buf_pool_create(void); |
| 176 | #endif |
| 177 | |
| 178 | /** Initialize system library |
| 179 | * \ingroup system |
| 180 | * Must be called before any other system function |
| 181 | * \returns 0=OK or error code <0 |
| 182 | */ |
| 183 | bcmos_errno bcmos_init(void) |
| 184 | { |
| 185 | bcmos_errno rc; |
| 186 | |
| 187 | if (bcmos_initialized) |
| 188 | return BCM_ERR_OK; |
| 189 | rc = bcmos_sys_init(); |
| 190 | bcmos_mutex_create(&bcmos_res_lock, 0, "res_lock"); |
| 191 | bcmos_mutex_create(&bcmos_print_lock, 0, "print_lock"); |
| 192 | TMR_POOL_INIT(&tmr_pool); |
| 193 | bcmos_fastlock_init(&tmr_pool.lock, 0); |
| 194 | bcmos_fastlock_init(&bcmos_msg_register_lock, 0); |
| 195 | rc = rc ? rc : bcmos_sys_timer_create(&tmr_pool.sys_timer, _sys_timer_handler, &tmr_pool); |
| 196 | |
| 197 | /* Create default buffer pool if so requested by compilation options */ |
| 198 | #ifdef BCMOS_BUF_POOL_SIZE |
| 199 | rc = rc ? rc : bcmos_buf_pool_create(); |
| 200 | #endif |
| 201 | |
| 202 | if (!rc) |
| 203 | { |
| 204 | bcmos_initialized = BCMOS_TRUE; |
| 205 | } |
| 206 | |
| 207 | return rc; |
| 208 | } |
| 209 | |
| 210 | /** Cleanup system library |
| 211 | * \ingroup system |
| 212 | */ |
| 213 | void bcmos_exit(void) |
| 214 | { |
| 215 | if (!bcmos_initialized) |
| 216 | return; |
| 217 | bcmos_sys_timer_destroy(&tmr_pool.sys_timer); |
| 218 | bcmos_mutex_destroy(&bcmos_print_lock); |
| 219 | bcmos_mutex_destroy(&bcmos_res_lock); |
| 220 | #ifdef BCMOS_BUF_POOL_SIZE |
| 221 | bcmos_blk_pool_reset(&sys_buf_pool); |
| 222 | bcmos_blk_pool_destroy(&sys_buf_pool); |
| 223 | #endif |
| 224 | bcmos_sys_exit(); |
| 225 | bcmos_initialized = BCMOS_FALSE; |
| 226 | } |
| 227 | |
| 228 | /* |
| 229 | * Common task services |
| 230 | */ |
| 231 | |
| 232 | /* Query task info */ |
| 233 | bcmos_errno bcmos_task_query(const bcmos_task *task, bcmos_task_parm *parm) |
| 234 | { |
| 235 | if (task == NULL || task->magic != BCMOS_TASK_MAGIC || parm == NULL) |
| 236 | { |
| 237 | return BCM_ERR_PARM; |
| 238 | } |
| 239 | *parm = task->parm; |
| 240 | return BCM_ERR_OK; |
| 241 | } |
| 242 | |
| 243 | /** Task iterator |
| 244 | * \param[in] prev Previous task. *prev==NULL - get first |
| 245 | * \return: BCM_ERR_OK, BCM_ERR_NOENT, BCM_ERR_NO_MORE |
| 246 | */ |
| 247 | bcmos_errno bcmos_task_get_next(bcmos_task **prev) |
| 248 | { |
| 249 | bcmos_task *task; |
| 250 | if (prev == NULL) |
| 251 | { |
| 252 | return BCM_ERR_PARM; |
| 253 | } |
| 254 | task = *prev; |
| 255 | if (task && task->magic != BCMOS_TASK_MAGIC) |
| 256 | { |
| 257 | return BCM_ERR_PARM; |
| 258 | } |
| 259 | if (task) |
| 260 | { |
| 261 | task = STAILQ_NEXT(task, list); |
| 262 | } |
| 263 | else |
| 264 | { |
| 265 | task = STAILQ_FIRST(&task_list); |
| 266 | } |
| 267 | *prev = task; |
| 268 | if (!task) |
| 269 | { |
| 270 | return BCM_ERR_NO_MORE; |
| 271 | } |
| 272 | return BCM_ERR_OK; |
| 273 | } |
| 274 | |
| 275 | /* |
| 276 | * Message queue |
| 277 | */ |
| 278 | |
| 279 | static void _bcmos_msgq_notify(bcmos_msg_queue *q, const char *txt) |
| 280 | { |
| 281 | BCMOS_TRACE_INFO("Msg queue %s: %s\n", q->q.parm.name, txt); |
| 282 | } |
| 283 | |
| 284 | /* Decrement in-queue statistics */ |
| 285 | static inline void _bcmos_msgq_stat_dec(bcmos_msg_queue_nw *q) |
| 286 | { |
| 287 | bcmos_msg_queue_stat *stat = &q->stat; |
| 288 | uint32_t old_in = stat->msg_in; |
| 289 | |
| 290 | if (stat->msg_in == 0) |
| 291 | { |
| 292 | BCMOS_TRACE_ERR("Attempt to decrement statistics for an empty queue ('%s')\n", q->parm.name); |
| 293 | } |
| 294 | else |
| 295 | { |
| 296 | --stat->msg_in; |
| 297 | ++stat->msg_received; |
| 298 | } |
| 299 | |
| 300 | if (old_in == q->parm.low_wm) |
| 301 | { |
| 302 | q->parm.notify((bcmos_msg_queue *)q, "becomes uncongested"); |
| 303 | stat->is_congested = BCMOS_FALSE; |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | /* Increment in-queue statistics */ |
| 308 | static inline void _bcmos_msgq_stat_inc(bcmos_msg_queue_nw *q) |
| 309 | { |
| 310 | bcmos_msg_queue_stat *stat = &q->stat; |
| 311 | uint32_t old_in = stat->msg_in; |
| 312 | |
| 313 | ++stat->msg_in; |
| 314 | ++stat->msg_sent; |
| 315 | if (old_in == q->parm.high_wm) |
| 316 | { |
| 317 | q->parm.notify((bcmos_msg_queue *)q, "becomes congested"); |
| 318 | stat->is_congested = BCMOS_TRUE; |
| 319 | } |
| 320 | if (stat->is_congested) |
| 321 | ++stat->msg_almost_full; |
| 322 | } |
| 323 | |
| 324 | static void _bcmos_qgroup_notify(bcmos_msg_qgroup *qgroup, const char *txt) |
| 325 | { |
| 326 | BCMOS_TRACE_INFO("Msg queue %s: %s\n", qgroup->parm.name, txt); |
| 327 | } |
| 328 | |
| 329 | /* Decrement in-queue statistics for queue group */ |
| 330 | static inline void _bcmos_qgroup_stat_dec(bcmos_msg_qgroup *qgroup) |
| 331 | { |
| 332 | bcmos_msg_queue_stat *stat = &qgroup->stat; |
| 333 | uint32_t old_in = stat->msg_in; |
| 334 | |
| 335 | if (stat->msg_in == 0) |
| 336 | { |
| 337 | BCMOS_TRACE_ERR("Attempt to decrement statistics for an empty queue ('%s')\n", qgroup->parm.name); |
| 338 | } |
| 339 | else |
| 340 | { |
| 341 | --stat->msg_in; |
| 342 | ++stat->msg_received; |
| 343 | } |
| 344 | |
| 345 | if (old_in == qgroup->parm.low_wm) |
| 346 | { |
| 347 | qgroup->parm.notify(qgroup, "becomes uncongested"); |
| 348 | stat->is_congested = BCMOS_FALSE; |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | /* Increment in-queue statistics */ |
| 353 | static inline void _bcmos_qgroup_stat_inc(bcmos_msg_qgroup *qgroup) |
| 354 | { |
| 355 | bcmos_msg_queue_stat *stat = &qgroup->stat; |
| 356 | uint32_t old_in = stat->msg_in; |
| 357 | |
| 358 | ++stat->msg_in; |
| 359 | ++stat->msg_sent; |
| 360 | if (old_in == qgroup->parm.high_wm) |
| 361 | { |
| 362 | qgroup->parm.notify(qgroup, "becomes congested"); |
| 363 | stat->is_congested = BCMOS_TRUE; |
| 364 | } |
| 365 | if (stat->is_congested) |
| 366 | ++stat->msg_almost_full; |
| 367 | } |
| 368 | |
| 369 | |
| 370 | /* Get message from queue. |
| 371 | * Urgent queue is checked 1st, then regular queue |
| 372 | * Must be called under lock! |
| 373 | * Returns msg or NULL if queue is empty |
| 374 | */ |
| 375 | static inline bcmos_msg *_bcmos_msg_get(bcmos_msg_queue_nw *q) |
| 376 | { |
| 377 | bcmos_msg *msg; |
| 378 | |
| 379 | msg = STAILQ_FIRST(&q->msgl_urg); |
| 380 | if (msg) |
| 381 | { |
| 382 | STAILQ_REMOVE_HEAD(&q->msgl_urg, next); |
| 383 | _bcmos_msgq_stat_dec(q); |
| 384 | return msg; |
| 385 | } |
| 386 | |
| 387 | msg = STAILQ_FIRST(&q->msgl); |
| 388 | if (msg) |
| 389 | { |
| 390 | STAILQ_REMOVE_HEAD(&q->msgl, next); |
| 391 | _bcmos_msgq_stat_dec(q); |
| 392 | } |
| 393 | |
| 394 | return msg; |
| 395 | } |
| 396 | |
| 397 | /* Put message on queue. |
| 398 | * Must be called under lock! |
| 399 | * Returns error in case of queue overflow |
| 400 | */ |
| 401 | static inline bcmos_errno _bcmos_msg_put(bcmos_msg_queue_nw *q, bcmos_msg *msg, bcmos_msg_send_flags flags) |
| 402 | { |
| 403 | /* Overflow check */ |
| 404 | if (q->stat.msg_in >= q->parm.size) |
| 405 | { |
| 406 | if (!(flags & BCMOS_MSG_SEND_NOLIMIT)) |
| 407 | { |
| 408 | ++q->stat.msg_discarded; |
| 409 | return BCM_ERR_OVERFLOW; |
| 410 | } |
| 411 | } |
| 412 | /* Put onto the relevant queue */ |
| 413 | if ((flags & BCMOS_MSG_SEND_URGENT)) |
| 414 | STAILQ_INSERT_TAIL(&q->msgl_urg, msg, next); |
| 415 | else |
| 416 | STAILQ_INSERT_TAIL(&q->msgl, msg, next); |
| 417 | _bcmos_msgq_stat_inc(q); |
| 418 | |
| 419 | return BCM_ERR_OK; |
| 420 | } |
| 421 | |
| 422 | /* Create message queue without wait support */ |
| 423 | static void bcmos_msg_queue_nw_init(bcmos_msg_queue_nw *q, const bcmos_msg_queue_parm *parm) |
| 424 | { |
| 425 | q->parm = *parm; |
| 426 | STAILQ_INIT(&q->msgl); |
| 427 | STAILQ_INIT(&q->msgl_urg); |
| 428 | bcmos_fastlock_init(&q->lock, parm->flags); |
| 429 | memset(&q->stat, 0, sizeof(q->stat)); |
| 430 | q->flags = 0; |
| 431 | if (!q->parm.size) |
| 432 | q->parm.size = BCMOS_MSG_QUEUE_SIZE_UNLIMITED; |
| 433 | if (!q->parm.high_wm) |
| 434 | q->parm.high_wm = BCMOS_MSG_QUEUE_SIZE_UNLIMITED; |
| 435 | if (!q->parm.low_wm) |
| 436 | q->parm.low_wm = q->parm.high_wm; |
| 437 | if (!q->parm.notify) |
| 438 | q->parm.notify = _bcmos_msgq_notify; |
| 439 | } |
| 440 | |
| 441 | /* Destroy message list */ |
| 442 | static void bcmos_msg_list_destroy(bcmos_msg_list *l) |
| 443 | { |
| 444 | bcmos_msg *msg, *tmp; |
| 445 | STAILQ_FOREACH_SAFE(msg, l, next, tmp) |
| 446 | { |
| 447 | STAILQ_REMOVE_HEAD(l, next); |
| 448 | bcmos_msg_free(msg); |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | #ifdef BCMOS_MSG_QUEUE_REMOTE_SUPPORT |
| 453 | |
| 454 | /* Remote queue support - common part of create/destroy */ |
| 455 | |
| 456 | static bcmos_errno _bcmos_msg_queue_destroy_remote_ep(bcmos_msg_queue *queue) |
| 457 | { |
| 458 | if (queue->q.parm.close) |
| 459 | queue->q.parm.close(queue); |
| 460 | bcmos_mutex_destroy(&queue->send_lock); |
| 461 | if (queue->send_buf) |
| 462 | bcmos_free(queue->send_buf); |
| 463 | if (queue->recv_buf) |
| 464 | bcmos_free(queue->recv_buf); |
| 465 | return BCM_ERR_OK; |
| 466 | } |
| 467 | |
| 468 | static bcmos_errno _bcmos_msg_queue_create_remote_ep(bcmos_msg_queue *queue) |
| 469 | { |
| 470 | bcmos_errno rc; |
| 471 | |
| 472 | /* Allocate tx and rx buffers */ |
| 473 | if (!queue->q.parm.max_mtu) |
| 474 | { |
| 475 | queue->q.parm.max_mtu = BCMOS_MSG_QUEUE_DEFAULT_MAX_MTU; |
| 476 | } |
| 477 | queue->send_buf = bcmos_calloc(queue->q.parm.max_mtu); |
| 478 | if (!queue->send_buf) |
| 479 | { |
| 480 | BCMOS_TRACE_RETURN(BCM_ERR_NOMEM, "Can't allocate send_buf\n"); |
| 481 | } |
| 482 | |
| 483 | queue->recv_buf = bcmos_calloc(queue->q.parm.max_mtu); |
| 484 | if (!queue->recv_buf) |
| 485 | { |
| 486 | bcmos_free(queue->send_buf); |
| 487 | BCMOS_TRACE_RETURN(BCM_ERR_NOMEM, "Can't allocate recv_buf\n"); |
| 488 | } |
| 489 | bcmos_mutex_create(&queue->send_lock, 0, queue->q.parm.name); |
| 490 | |
| 491 | switch (queue->q.parm.ep_type) |
| 492 | { |
| 493 | #ifdef BCMOS_MSG_QUEUE_DOMAIN_SOCKET |
| 494 | case BCMOS_MSG_QUEUE_EP_DOMAIN_SOCKET: |
| 495 | rc = bcmos_sys_msg_queue_domain_socket_open(queue); |
| 496 | break; |
| 497 | #endif |
| 498 | #ifdef BCMOS_MSG_QUEUE_UDP_SOCKET |
| 499 | case BCMOS_MSG_QUEUE_EP_UDP_SOCKET: |
| 500 | rc = bcmos_sys_msg_queue_udp_socket_open(queue); |
| 501 | break; |
| 502 | #endif |
| 503 | #ifdef BCMOS_MSG_QUEUE_USER_DEFINED |
| 504 | case BCMOS_MSG_QUEUE_EP_USER_DEFINED: |
| 505 | if (parm.open == NULL || parm.close == NULL || parm.send==NULL || parm.recv == NULL) |
| 506 | { |
| 507 | rc = BCM_ERR_PARM; |
| 508 | break; |
| 509 | } |
| 510 | rc = parm.open(queue); |
| 511 | break; |
| 512 | #endif |
| 513 | default: |
| 514 | rc = BCM_ERR_PARM; |
| 515 | break; |
| 516 | } |
| 517 | |
| 518 | if (rc) |
| 519 | { |
| 520 | _bcmos_msg_queue_destroy_remote_ep(queue); |
| 521 | } |
| 522 | |
| 523 | return rc; |
| 524 | } |
| 525 | |
| 526 | #endif /* #ifdef BCMOS_MSG_QUEUE_REMOTE_SUPPORT */ |
| 527 | |
| 528 | /* Create message queue. */ |
| 529 | bcmos_errno bcmos_msg_queue_create(bcmos_msg_queue *queue, const bcmos_msg_queue_parm *parm) |
| 530 | { |
| 531 | bcmos_errno rc; |
| 532 | |
| 533 | if (!queue || !parm) |
| 534 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "queue %p, parm %p\n", queue, parm); |
| 535 | memset(queue, 0, sizeof(*queue)); |
| 536 | queue->q.parm = *parm; |
| 537 | |
| 538 | if (parm->ep_type == BCMOS_MSG_QUEUE_EP_LOCAL) |
| 539 | { |
| 540 | rc = bcmos_sem_create(&queue->m, 0, parm->flags, queue->q.parm.name); |
| 541 | if (!rc) |
| 542 | bcmos_msg_queue_nw_init(&queue->q, parm); |
| 543 | } |
| 544 | else |
| 545 | #ifdef BCMOS_MSG_QUEUE_REMOTE_SUPPORT |
| 546 | { |
| 547 | rc = _bcmos_msg_queue_create_remote_ep(queue); |
| 548 | } |
| 549 | #else |
| 550 | { |
| 551 | rc = BCM_ERR_PARM; |
| 552 | } |
| 553 | #endif |
| 554 | |
| 555 | if (rc) |
| 556 | return rc; |
| 557 | |
| 558 | queue->magic = BCMOS_MSG_QUEUE_VALID; |
| 559 | /* Copy name to make sure that it is not released - in case it was on the stack */ |
| 560 | if (queue->q.parm.name) |
| 561 | { |
| 562 | strncpy(queue->name, queue->q.parm.name, sizeof(queue->name) - 1); |
| 563 | queue->q.parm.name = queue->name; |
| 564 | } |
| 565 | bcmos_mutex_lock(&bcmos_res_lock); |
| 566 | STAILQ_INSERT_TAIL(&msg_queue_list, queue, list); |
| 567 | bcmos_mutex_unlock(&bcmos_res_lock); |
| 568 | return BCM_ERR_OK; |
| 569 | } |
| 570 | |
| 571 | /* Destroy queue */ |
| 572 | bcmos_errno bcmos_msg_queue_destroy(bcmos_msg_queue *queue) |
| 573 | { |
| 574 | bcmos_errno rc = BCM_ERR_OK; |
| 575 | |
| 576 | if (!queue || queue->magic != BCMOS_MSG_QUEUE_VALID) |
| 577 | { |
| 578 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "queue handle is invalid\n"); |
| 579 | } |
| 580 | queue->magic = BCMOS_MSG_QUEUE_DELETED; |
| 581 | bcmos_mutex_lock(&bcmos_res_lock); |
| 582 | STAILQ_REMOVE(&msg_queue_list, queue, bcmos_msg_queue, list); |
| 583 | bcmos_mutex_unlock(&bcmos_res_lock); |
| 584 | |
| 585 | if (queue->q.parm.ep_type == BCMOS_MSG_QUEUE_EP_LOCAL) |
| 586 | { |
| 587 | bcmos_sem_destroy(&queue->m); |
| 588 | /* Release all pending messages */ |
| 589 | bcmos_msg_list_destroy(&queue->q.msgl_urg); |
| 590 | bcmos_msg_list_destroy(&queue->q.msgl); |
| 591 | } |
| 592 | #ifdef BCMOS_MSG_QUEUE_REMOTE_SUPPORT |
| 593 | else |
| 594 | { |
| 595 | rc = _bcmos_msg_queue_destroy_remote_ep(queue); |
| 596 | } |
| 597 | #endif |
| 598 | |
| 599 | return rc; |
| 600 | } |
| 601 | |
| 602 | /* Get queue info */ |
| 603 | bcmos_errno bcmos_msg_queue_query(const bcmos_msg_queue *queue, bcmos_msg_queue_info *info) |
| 604 | { |
| 605 | if (!queue || !info) |
| 606 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "queue %p, info %p\n", queue, info); |
| 607 | info->stat = queue->q.stat; |
| 608 | info->parm = queue->q.parm; |
| 609 | return BCM_ERR_OK; |
| 610 | } |
| 611 | |
| 612 | /* Message queue iterator */ |
| 613 | bcmos_errno bcmos_msg_queue_get_next(const bcmos_msg_queue **prev) |
| 614 | { |
| 615 | const bcmos_msg_queue *queue; |
| 616 | |
| 617 | if (prev == NULL) |
| 618 | { |
| 619 | return BCM_ERR_PARM; |
| 620 | } |
| 621 | queue = *prev; |
| 622 | if (queue && queue->magic != BCMOS_MSG_QUEUE_VALID) |
| 623 | { |
| 624 | return BCM_ERR_PARM; |
| 625 | } |
| 626 | if (queue) |
| 627 | { |
| 628 | queue = STAILQ_NEXT(queue, list); |
| 629 | } |
| 630 | else |
| 631 | { |
| 632 | queue = STAILQ_FIRST(&msg_queue_list); |
| 633 | } |
| 634 | *prev = queue; |
| 635 | if (!queue) |
| 636 | { |
| 637 | return BCM_ERR_NO_MORE; |
| 638 | } |
| 639 | return BCM_ERR_OK; |
| 640 | } |
| 641 | |
| 642 | #ifdef BCMOS_MSG_QUEUE_REMOTE_SUPPORT |
| 643 | |
| 644 | /* Pack / unpack message header. |
| 645 | * In the future we might adopt bcmolt_buf service into OS abstraction and use it |
| 646 | * for packing / unpacking. |
| 647 | */ |
| 648 | |
| 649 | void bcmos_msg_hdr_pack(const bcmos_msg *msg, uint8_t *buf, uint32_t data_size) |
| 650 | { |
| 651 | uint16_t val16; |
| 652 | uint32_t val32; |
| 653 | val16 = BCMOS_ENDIAN_CPU_TO_BIG_U16(msg->type); |
| 654 | memcpy(buf, &val16, sizeof(val16)); |
| 655 | buf[2] = (uint8_t)msg->instance; |
| 656 | buf[3] = (uint8_t)msg->sender; |
| 657 | val32 = BCMOS_ENDIAN_CPU_TO_BIG_U32(data_size); |
| 658 | memcpy(&buf[4], &val32, sizeof(val32)); |
| 659 | } |
| 660 | |
| 661 | void bcmos_msg_hdr_unpack(const uint8_t *buf, bcmos_msg *msg) |
| 662 | { |
| 663 | uint16_t val16; |
| 664 | uint32_t val32; |
| 665 | memcpy(&val16, buf, sizeof(val16)); |
| 666 | val16 = BCMOS_ENDIAN_BIG_TO_CPU_U16(val16); |
| 667 | msg->type = (bcmos_msg_id)val16; |
| 668 | msg->instance = (bcmos_msg_instance)buf[2]; |
| 669 | msg->sender = (bcmos_module_id)buf[3]; |
| 670 | memcpy(&val32, &buf[4], sizeof(val32)); |
| 671 | msg->size = BCMOS_ENDIAN_BIG_TO_CPU_U32(val32); /* can be overwritten by unpacker */ |
| 672 | msg->handler = NULL; |
| 673 | msg->send_flags = 0; |
| 674 | } |
| 675 | |
| 676 | /* Send message to remote EP wrapper */ |
| 677 | static bcmos_errno _bcmos_msg_send_to_remote_ep(bcmos_msg_queue *queue, bcmos_msg *msg, bcmos_msg_send_flags flags) |
| 678 | { |
| 679 | uint8_t *buf = NULL; |
| 680 | uint32_t buf_length = 0; |
| 681 | bcmos_errno rc; |
| 682 | |
| 683 | bcmos_mutex_lock(&queue->send_lock); |
| 684 | rc = queue->q.parm.pack(queue, msg, &buf, &buf_length); |
| 685 | rc = rc ? rc : queue->q.parm.send(queue, buf, buf_length); |
| 686 | bcmos_mutex_unlock(&queue->send_lock); |
| 687 | |
| 688 | /* Release if sent successfully or if auto-release flag is set */ |
| 689 | if (rc == BCM_ERR_OK || !(flags & BCMOS_MSG_SEND_NO_FREE_ON_ERROR)) |
| 690 | { |
| 691 | bcmos_msg_free(msg); |
| 692 | } |
| 693 | if (buf && queue->q.parm.free_packed) |
| 694 | { |
| 695 | queue->q.parm.free_packed(queue, buf); |
| 696 | } |
| 697 | if (rc) |
| 698 | { |
| 699 | ++queue->q.stat.msg_discarded; |
| 700 | } |
| 701 | else |
| 702 | { |
| 703 | ++queue->q.stat.msg_sent; |
| 704 | } |
| 705 | |
| 706 | return rc; |
| 707 | } |
| 708 | |
| 709 | /* Receive message from remote EP wrapper */ |
| 710 | static bcmos_errno _bcmos_msg_recv_from_remote_ep(bcmos_msg_queue *queue, uint32_t timeout, bcmos_msg **msg) |
| 711 | { |
| 712 | uint8_t *buf = NULL; |
| 713 | uint32_t buf_length = 0; |
| 714 | bcmos_errno rc; |
| 715 | |
| 716 | rc = queue->q.parm.recv(queue, timeout, &buf, &buf_length); |
| 717 | rc = rc ? rc : queue->q.parm.unpack(queue, buf, buf_length, msg); |
| 718 | if (buf && queue->q.parm.free_packed) |
| 719 | { |
| 720 | queue->q.parm.free_packed(queue, buf); |
| 721 | } |
| 722 | if (!rc) |
| 723 | { |
| 724 | ++queue->q.stat.msg_received; |
| 725 | } |
| 726 | |
| 727 | return rc; |
| 728 | } |
| 729 | |
| 730 | #endif /* BCMOS_MSG_QUEUE_REMOTE_SUPPORT */ |
| 731 | |
| 732 | /* Send message to queue */ |
| 733 | bcmos_errno bcmos_msg_send(bcmos_msg_queue *queue, bcmos_msg *msg, bcmos_msg_send_flags flags) |
| 734 | { |
| 735 | long lock_flags; |
| 736 | bcmos_errno rc; |
| 737 | |
| 738 | #ifdef BCMOS_MSG_QUEUE_REMOTE_SUPPORT |
| 739 | if (queue->q.parm.ep_type != BCMOS_MSG_QUEUE_EP_LOCAL) |
| 740 | { |
| 741 | return _bcmos_msg_send_to_remote_ep(queue, msg, flags); |
| 742 | } |
| 743 | #endif |
| 744 | |
| 745 | lock_flags = bcmos_fastlock_lock(&queue->q.lock); |
| 746 | rc = _bcmos_msg_put(&queue->q, msg, flags); |
| 747 | if (rc) |
| 748 | { |
| 749 | bcmos_fastlock_unlock(&queue->q.lock, lock_flags); |
| 750 | if (!(flags & BCMOS_MSG_SEND_NO_FREE_ON_ERROR)) |
| 751 | { |
| 752 | bcmos_msg_free(msg); |
| 753 | } |
| 754 | BCMOS_TRACE_ERR("Overflow: Queue %s\n", queue->q.parm.name); |
| 755 | return rc; |
| 756 | } |
| 757 | |
| 758 | /* Success */ |
| 759 | if (queue->is_waiting) |
| 760 | { |
| 761 | /* Kick waiting task */ |
| 762 | queue->is_waiting = BCMOS_FALSE; |
| 763 | bcmos_fastlock_unlock(&queue->q.lock, lock_flags); |
| 764 | bcmos_sem_post(&queue->m); |
| 765 | } |
| 766 | else |
| 767 | { |
| 768 | bcmos_fastlock_unlock(&queue->q.lock, lock_flags); |
| 769 | } |
| 770 | |
| 771 | return BCM_ERR_OK; |
| 772 | } |
| 773 | |
| 774 | /* Send message to module (internal) - doesn't post any semaphores so it's safe to call under a fastlock */ |
| 775 | static bcmos_errno _bcmos_msg_send_to_module( |
| 776 | bcmos_module_id module_id, |
| 777 | bcmos_msg *msg, |
| 778 | bcmos_msg_send_flags flags, |
| 779 | bcmos_sem **sem_to_post) |
| 780 | { |
| 781 | bcmos_module *module = _bcmos_module_get(module_id); |
| 782 | bcmos_task *task; |
| 783 | long lock_flags, q_lock_flags; |
| 784 | uint32_t active_modules; |
| 785 | bcmos_errno rc; |
| 786 | *sem_to_post = NULL; |
| 787 | |
| 788 | if (!module || !msg->handler) |
| 789 | { |
| 790 | if (!module) |
| 791 | { |
| 792 | BCMOS_TRACE_ERR("Module %d doesn't exist\n", module_id); |
| 793 | rc = BCM_ERR_NOENT; |
| 794 | } |
| 795 | else |
| 796 | { |
| 797 | BCMOS_TRACE_ERR("msg->handler is not set. msg->type=%d\n", msg->type); |
| 798 | rc = BCM_ERR_PARM; |
| 799 | } |
| 800 | if (!(flags & BCMOS_MSG_SEND_NO_FREE_ON_ERROR)) |
| 801 | { |
| 802 | bcmos_msg_free(msg); |
| 803 | } |
| 804 | return rc; |
| 805 | } |
| 806 | |
| 807 | task = module->my_task; |
| 808 | lock_flags = bcmos_fastlock_lock(&task->active_lock); |
| 809 | q_lock_flags = bcmos_fastlock_lock(&module->msgq.lock); |
| 810 | |
| 811 | rc = _bcmos_msg_put(&module->msgq, msg, flags); |
| 812 | if (rc) |
| 813 | { |
| 814 | bcmos_fastlock_unlock(&module->msgq.lock, q_lock_flags); |
| 815 | bcmos_fastlock_unlock(&task->active_lock, lock_flags); |
| 816 | |
| 817 | /* Queue overflow */ |
| 818 | if (!(flags & BCMOS_MSG_SEND_NO_FREE_ON_ERROR)) |
| 819 | bcmos_msg_free(msg); |
| 820 | |
| 821 | BCMOS_TRACE_ERR("Overflow: Queue %s\n", module->parm.qparm.name); |
| 822 | |
| 823 | return rc; |
| 824 | } |
| 825 | bcmos_fastlock_unlock(&module->msgq.lock, q_lock_flags); |
| 826 | |
| 827 | /* Success. Update active_modules task and kick the task */ |
| 828 | active_modules = task->active_modules; |
| 829 | task->active_modules |= (1 << module->idx); |
| 830 | bcmos_fastlock_unlock(&task->active_lock, lock_flags); |
| 831 | |
| 832 | /* Notify caller to kick task if there is a chance it was waiting */ |
| 833 | if (!active_modules) |
| 834 | *sem_to_post = &task->active_sem; |
| 835 | |
| 836 | return BCM_ERR_OK; |
| 837 | } |
| 838 | |
| 839 | /* Send message to module */ |
| 840 | bcmos_errno bcmos_msg_send_to_module(bcmos_module_id module_id, bcmos_msg *msg, bcmos_msg_send_flags flags) |
| 841 | { |
| 842 | bcmos_sem *sem_to_post; |
| 843 | bcmos_errno err = _bcmos_msg_send_to_module(module_id, msg, flags, &sem_to_post); |
| 844 | if (sem_to_post) |
| 845 | bcmos_sem_post(sem_to_post); |
| 846 | return err; |
| 847 | } |
| 848 | |
| 849 | /* Get message from the head of message queue */ |
| 850 | bcmos_errno bcmos_msg_recv(bcmos_msg_queue *queue, uint32_t timeout, bcmos_msg **msg) |
| 851 | { |
| 852 | long lock_flags; |
| 853 | |
| 854 | if (!queue || !msg) |
| 855 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "queue %p, msg %p\n", queue, msg); |
| 856 | |
| 857 | #ifdef BCMOS_MSG_QUEUE_REMOTE_SUPPORT |
| 858 | if (queue->q.parm.ep_type != BCMOS_MSG_QUEUE_EP_LOCAL) |
| 859 | { |
| 860 | return _bcmos_msg_recv_from_remote_ep(queue, timeout, msg); |
| 861 | } |
| 862 | #endif |
| 863 | |
| 864 | lock_flags = bcmos_fastlock_lock(&queue->q.lock); |
| 865 | *msg = _bcmos_msg_get(&queue->q); |
| 866 | if (*msg) |
| 867 | { |
| 868 | bcmos_fastlock_unlock(&queue->q.lock, lock_flags); |
| 869 | return BCM_ERR_OK; |
| 870 | } |
| 871 | if (!timeout) |
| 872 | { |
| 873 | bcmos_fastlock_unlock(&queue->q.lock, lock_flags); |
| 874 | return BCM_ERR_NOENT; |
| 875 | } |
| 876 | |
| 877 | /* Receive with wait */ |
| 878 | queue->is_waiting = BCMOS_TRUE; |
| 879 | bcmos_fastlock_unlock(&queue->q.lock, lock_flags); |
| 880 | |
| 881 | /* wait for it */ |
| 882 | bcmos_sem_wait(&queue->m, timeout); |
| 883 | lock_flags = bcmos_fastlock_lock(&queue->q.lock); |
| 884 | *msg = _bcmos_msg_get(&queue->q); |
| 885 | queue->is_waiting = BCMOS_FALSE; |
| 886 | bcmos_fastlock_unlock(&queue->q.lock, lock_flags); |
| 887 | if (!*msg) |
| 888 | return BCM_ERR_TIMEOUT; |
| 889 | |
| 890 | return BCM_ERR_OK; |
| 891 | } |
| 892 | |
| 893 | |
| 894 | /* |
| 895 | * Queue group support |
| 896 | */ |
| 897 | |
| 898 | /* Create message queue group. */ |
| 899 | bcmos_errno bcmos_msg_qgroup_create(bcmos_msg_qgroup *qgroup, const bcmos_msg_qgroup_parm *parm) |
| 900 | { |
| 901 | bcmos_errno rc; |
| 902 | bcmos_qgroup_prty prty; |
| 903 | |
| 904 | if (!qgroup || !parm || !parm->nqueues || parm->nqueues>32) |
| 905 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "queue %p, parm %p nqueues %u\n", qgroup, parm, parm ? parm->nqueues: 0); |
| 906 | memset(qgroup, 0, sizeof(*qgroup)); |
| 907 | rc = bcmos_sem_create(&qgroup->m, 0, parm->flags, NULL); |
| 908 | if (rc) |
| 909 | return rc; |
| 910 | qgroup->parm = *parm; |
| 911 | bcmos_fastlock_init(&qgroup->lock, parm->flags); |
| 912 | if (!qgroup->parm.size) |
| 913 | qgroup->parm.size = BCMOS_MSG_QUEUE_SIZE_UNLIMITED; |
| 914 | if (!qgroup->parm.high_wm) |
| 915 | qgroup->parm.high_wm = BCMOS_MSG_QUEUE_SIZE_UNLIMITED; |
| 916 | if (!qgroup->parm.low_wm) |
| 917 | qgroup->parm.low_wm = qgroup->parm.high_wm; |
| 918 | if (!qgroup->parm.notify) |
| 919 | qgroup->parm.notify = _bcmos_qgroup_notify; |
| 920 | qgroup->msgl = bcmos_calloc(sizeof(bcmos_msg_list) * (uint32_t)parm->nqueues); |
| 921 | if (!qgroup->msgl) |
| 922 | { |
| 923 | bcmos_msg_qgroup_destroy(qgroup); |
| 924 | return BCM_ERR_NOMEM; |
| 925 | } |
| 926 | for (prty = 0; prty < qgroup->parm.nqueues; prty++) |
| 927 | { |
| 928 | STAILQ_INIT(&qgroup->msgl[prty]); |
| 929 | } |
| 930 | /* Copy name to make sure that it is not released - in case it was on the stack */ |
| 931 | if (qgroup->parm.name) |
| 932 | { |
| 933 | strncpy(qgroup->name, qgroup->parm.name, sizeof(qgroup->parm.name) - 1); |
| 934 | qgroup->parm.name = qgroup->name; |
| 935 | } |
| 936 | qgroup->magic = BCMOS_MSG_QGROUP_VALID; |
| 937 | bcmos_mutex_lock(&bcmos_res_lock); |
| 938 | STAILQ_INSERT_TAIL(&msg_qgroup_list, qgroup, list); |
| 939 | bcmos_mutex_unlock(&bcmos_res_lock); |
| 940 | |
| 941 | return BCM_ERR_OK; |
| 942 | } |
| 943 | |
| 944 | /** Destroy queue group |
| 945 | * |
| 946 | * \param[in] qgroup Queue group handle |
| 947 | * \returns 0=OK or error code <0 |
| 948 | */ |
| 949 | bcmos_errno bcmos_msg_qgroup_destroy(bcmos_msg_qgroup *qgroup) |
| 950 | { |
| 951 | bcmos_qgroup_prty prty; |
| 952 | |
| 953 | if (!qgroup || qgroup->magic != BCMOS_MSG_QGROUP_VALID) |
| 954 | { |
| 955 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "queue group handle is invalid\n"); |
| 956 | } |
| 957 | |
| 958 | qgroup->magic = BCMOS_MSG_QGROUP_DELETED; |
| 959 | |
| 960 | bcmos_mutex_lock(&bcmos_res_lock); |
| 961 | STAILQ_REMOVE(&msg_qgroup_list, qgroup, bcmos_msg_qgroup, list); |
| 962 | bcmos_mutex_unlock(&bcmos_res_lock); |
| 963 | |
| 964 | bcmos_sem_destroy(&qgroup->m); |
| 965 | |
| 966 | /* Release all pending messages */ |
| 967 | if (qgroup->msgl) |
| 968 | { |
| 969 | for (prty = 0; prty < qgroup->parm.nqueues; prty++) |
| 970 | { |
| 971 | bcmos_msg_list_destroy(&qgroup->msgl[prty]); |
| 972 | } |
| 973 | bcmos_free(qgroup->msgl); |
| 974 | } |
| 975 | return BCM_ERR_OK; |
| 976 | |
| 977 | } |
| 978 | |
| 979 | /** Get queue group info */ |
| 980 | bcmos_errno bcmos_msg_qgroup_query(const bcmos_msg_qgroup *qgroup, bcmos_msg_qgroup_info *info) |
| 981 | { |
| 982 | if (!qgroup || !info) |
| 983 | return BCM_ERR_PARM; |
| 984 | |
| 985 | info->parm = qgroup->parm; |
| 986 | info->stat = qgroup->stat; |
| 987 | |
| 988 | return BCM_ERR_OK; |
| 989 | } |
| 990 | |
| 991 | /** Message queue group iterator |
| 992 | * \param[in] prev Previous queue group. *prev==NULL - get first |
| 993 | * \return: BCM_ERR_OK, BCM_ERR_NOENT, BCM_ERR_NO_MORE |
| 994 | */ |
| 995 | bcmos_errno bcmos_msg_qgroup_get_next(const bcmos_msg_qgroup **prev) |
| 996 | { |
| 997 | const bcmos_msg_qgroup *qgrp; |
| 998 | |
| 999 | if (prev == NULL) |
| 1000 | { |
| 1001 | return BCM_ERR_PARM; |
| 1002 | } |
| 1003 | qgrp = *prev; |
| 1004 | if (qgrp && qgrp->magic != BCMOS_MSG_QGROUP_VALID) |
| 1005 | { |
| 1006 | return BCM_ERR_PARM; |
| 1007 | } |
| 1008 | if (qgrp) |
| 1009 | { |
| 1010 | qgrp = STAILQ_NEXT(qgrp, list); |
| 1011 | } |
| 1012 | else |
| 1013 | { |
| 1014 | qgrp = STAILQ_FIRST(&msg_qgroup_list); |
| 1015 | } |
| 1016 | *prev = qgrp; |
| 1017 | if (!qgrp) |
| 1018 | { |
| 1019 | return BCM_ERR_NO_MORE; |
| 1020 | } |
| 1021 | return BCM_ERR_OK; |
| 1022 | } |
| 1023 | |
| 1024 | /* get message from non-empty queue group queue */ |
| 1025 | static inline bcmos_msg *_bcmos_qgroup_msg_get(bcmos_msg_qgroup *qgroup, bcmos_qgroup_prty prty) |
| 1026 | { |
| 1027 | bcmos_msg *msg; |
| 1028 | msg = STAILQ_FIRST(&qgroup->msgl[prty]); |
| 1029 | BUG_ON(!msg); |
| 1030 | STAILQ_REMOVE_HEAD(&qgroup->msgl[prty], next); |
| 1031 | if (STAILQ_EMPTY(&qgroup->msgl[prty])) |
| 1032 | { |
| 1033 | qgroup->active_mask &= ~(1 << prty); |
| 1034 | } |
| 1035 | return msg; |
| 1036 | } |
| 1037 | |
| 1038 | /* Send message to queue group */ |
| 1039 | bcmos_errno bcmos_msg_send_to_qgroup(bcmos_msg_qgroup *qgroup, bcmos_msg *msg, bcmos_qgroup_prty prty, |
| 1040 | bcmos_msg_send_flags flags) |
| 1041 | { |
| 1042 | long lock_flags; |
| 1043 | bcmos_errno rc = BCM_ERR_OK; |
| 1044 | |
| 1045 | if (prty >= qgroup->parm.nqueues) |
| 1046 | { |
| 1047 | if (!(flags & BCMOS_MSG_SEND_NO_FREE_ON_ERROR)) |
| 1048 | { |
| 1049 | bcmos_msg_free(msg); |
| 1050 | } |
| 1051 | return BCM_ERR_PARM; |
| 1052 | } |
| 1053 | msg->send_flags = flags; |
| 1054 | |
| 1055 | lock_flags = bcmos_fastlock_lock(&qgroup->lock); |
| 1056 | |
| 1057 | /* Put into the relevant queue */ |
| 1058 | STAILQ_INSERT_TAIL(&qgroup->msgl[prty], msg, next); |
| 1059 | qgroup->active_mask |= (1 << prty); |
| 1060 | _bcmos_qgroup_stat_inc(qgroup); |
| 1061 | |
| 1062 | /* Overflow check */ |
| 1063 | if ((qgroup->stat.msg_in > qgroup->parm.size)) |
| 1064 | { |
| 1065 | bcmos_msg *m; |
| 1066 | bcmos_qgroup_prty i; |
| 1067 | /* Find the lowest-priority queue with data and discard the head message. |
| 1068 | * The loop always finds something because we've just added a message |
| 1069 | */ |
| 1070 | for (i = qgroup->parm.nqueues - 1; (qgroup->active_mask & (1 << i)) == 0; i--) |
| 1071 | ; |
| 1072 | m = _bcmos_qgroup_msg_get(qgroup, i); |
| 1073 | --qgroup->stat.msg_in; |
| 1074 | ++qgroup->stat.msg_discarded; |
| 1075 | if (!(m->send_flags & BCMOS_MSG_SEND_NO_FREE_ON_ERROR)) |
| 1076 | { |
| 1077 | bcmos_msg_free(m); |
| 1078 | } |
| 1079 | rc = BCM_ERR_OVERFLOW; |
| 1080 | } |
| 1081 | |
| 1082 | /* Kick waiting task */ |
| 1083 | if (qgroup->is_waiting) |
| 1084 | { |
| 1085 | qgroup->is_waiting = BCMOS_FALSE; |
| 1086 | bcmos_fastlock_unlock(&qgroup->lock, lock_flags); |
| 1087 | bcmos_sem_post(&qgroup->m); |
| 1088 | } |
| 1089 | else |
| 1090 | { |
| 1091 | bcmos_fastlock_unlock(&qgroup->lock, lock_flags); |
| 1092 | } |
| 1093 | |
| 1094 | return rc; |
| 1095 | |
| 1096 | } |
| 1097 | |
| 1098 | /* Get highest priority message from queue group */ |
| 1099 | bcmos_errno bcmos_msg_recv_from_qgroup(bcmos_msg_qgroup *qgroup, uint32_t timeout, bcmos_msg **msg) |
| 1100 | { |
| 1101 | long lock_flags; |
| 1102 | bcmos_qgroup_prty prty; |
| 1103 | |
| 1104 | if (!qgroup || !msg) |
| 1105 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "qgroup %p, msg %p\n", qgroup, msg); |
| 1106 | |
| 1107 | lock_flags = bcmos_fastlock_lock(&qgroup->lock); |
| 1108 | if (!qgroup->active_mask) |
| 1109 | { |
| 1110 | if (!timeout) |
| 1111 | { |
| 1112 | bcmos_fastlock_unlock(&qgroup->lock, lock_flags); |
| 1113 | return BCM_ERR_NOENT; |
| 1114 | } |
| 1115 | |
| 1116 | /* Receive with wait */ |
| 1117 | qgroup->is_waiting = BCMOS_TRUE; |
| 1118 | bcmos_fastlock_unlock(&qgroup->lock, lock_flags); |
| 1119 | |
| 1120 | /* wait for it */ |
| 1121 | bcmos_sem_wait(&qgroup->m, timeout); |
| 1122 | |
| 1123 | /* Done waiting. Either got a message or a timeout */ |
| 1124 | lock_flags = bcmos_fastlock_lock(&qgroup->lock); |
| 1125 | qgroup->is_waiting = BCMOS_FALSE; |
| 1126 | if (!qgroup->active_mask) |
| 1127 | { |
| 1128 | bcmos_fastlock_unlock(&qgroup->lock, lock_flags); |
| 1129 | return BCM_ERR_TIMEOUT; |
| 1130 | } |
| 1131 | } |
| 1132 | |
| 1133 | prty = (bcmos_qgroup_prty)(ffs(qgroup->active_mask) - 1); |
| 1134 | BUG_ON(prty >= qgroup->parm.nqueues); |
| 1135 | *msg = _bcmos_qgroup_msg_get(qgroup, prty); |
| 1136 | _bcmos_qgroup_stat_dec(qgroup); |
| 1137 | bcmos_fastlock_unlock(&qgroup->lock, lock_flags); |
| 1138 | |
| 1139 | return BCM_ERR_OK; |
| 1140 | } |
| 1141 | |
| 1142 | |
| 1143 | /* |
| 1144 | * Message registration and dispatch |
| 1145 | */ |
| 1146 | |
| 1147 | /* Hash entry */ |
| 1148 | typedef struct msg_hash_entry msg_hash_entry; |
| 1149 | |
| 1150 | struct msg_hash_entry |
| 1151 | { |
| 1152 | /* Key */ |
| 1153 | uint32_t key; /* msg_type + instance */ |
| 1154 | |
| 1155 | /* Value */ |
| 1156 | bcmos_module_id module_id; |
| 1157 | F_bcmos_msg_handler handler; |
| 1158 | |
| 1159 | /* List of entries with the same key */ |
| 1160 | SLIST_ENTRY(msg_hash_entry) list; |
| 1161 | }; |
| 1162 | |
| 1163 | /* Hash table */ |
| 1164 | static SLIST_HEAD(msg_hash, msg_hash_entry) msg_hash_table[BCMOS_MSG_HASH_SIZE]; |
| 1165 | |
| 1166 | /* Make hash key from msg_type and instance */ |
| 1167 | static inline uint32_t _bcmos_msg_hash_key(bcmos_msg_id msg_type, bcmos_msg_instance instance) |
| 1168 | { |
| 1169 | return ((uint32_t)instance << 16) | (uint32_t)msg_type; |
| 1170 | } |
| 1171 | |
| 1172 | /* Hash function */ |
| 1173 | static inline uint32_t _bcmos_msg_hash_func(uint32_t key) |
| 1174 | { |
| 1175 | key ^= (key >> 9); |
| 1176 | key ^= (key << 3); |
| 1177 | key ^= (key >> 15); |
| 1178 | return key % BCMOS_MSG_HASH_SIZE; |
| 1179 | } |
| 1180 | |
| 1181 | /* Find entry in hash */ |
| 1182 | static inline msg_hash_entry *_bcmos_msg_hash_find(bcmos_msg_id msg_type, bcmos_msg_instance instance) |
| 1183 | { |
| 1184 | uint32_t key = _bcmos_msg_hash_key(msg_type, instance); |
| 1185 | uint32_t hash = _bcmos_msg_hash_func(key); |
| 1186 | msg_hash_entry *entry; |
| 1187 | SLIST_FOREACH(entry, &msg_hash_table[hash], list) |
| 1188 | { |
| 1189 | if (entry->key == key) |
| 1190 | break; |
| 1191 | } |
| 1192 | return entry; |
| 1193 | } |
| 1194 | |
| 1195 | /* Register message_type+instance --> module+handler */ |
| 1196 | bcmos_errno bcmos_msg_register(bcmos_msg_id msg_type, bcmos_msg_instance instance, |
| 1197 | bcmos_module_id module_id, F_bcmos_msg_handler handler) |
| 1198 | { |
| 1199 | uint32_t key = _bcmos_msg_hash_key(msg_type, instance); |
| 1200 | uint32_t hash = _bcmos_msg_hash_func(key); |
| 1201 | msg_hash_entry *entry; |
| 1202 | long lock_flags; |
| 1203 | |
| 1204 | if (!handler) |
| 1205 | return BCM_ERR_PARM; |
| 1206 | |
| 1207 | entry = bcmos_calloc(sizeof(*entry)); |
| 1208 | if (!entry) |
| 1209 | return BCM_ERR_NOMEM; |
| 1210 | |
| 1211 | entry->key = key; |
| 1212 | entry->module_id = module_id; |
| 1213 | entry->handler = handler; |
| 1214 | lock_flags = bcmos_fastlock_lock(&bcmos_msg_register_lock); |
| 1215 | if (_bcmos_msg_hash_find(msg_type, instance) != NULL) |
| 1216 | { |
| 1217 | bcmos_fastlock_unlock(&bcmos_msg_register_lock, lock_flags); |
| 1218 | bcmos_free(entry); |
| 1219 | return BCM_ERR_ALREADY; |
| 1220 | } |
| 1221 | SLIST_INSERT_HEAD(&msg_hash_table[hash], entry, list); |
| 1222 | bcmos_fastlock_unlock(&bcmos_msg_register_lock, lock_flags); |
| 1223 | |
| 1224 | return BCM_ERR_OK; |
| 1225 | } |
| 1226 | |
| 1227 | bcmos_errno bcmos_msg_unregister(bcmos_msg_id msg_type, bcmos_msg_instance instance, bcmos_module_id module_id) |
| 1228 | { |
| 1229 | uint32_t key = _bcmos_msg_hash_key(msg_type, instance); |
| 1230 | uint32_t hash = _bcmos_msg_hash_func(key); |
| 1231 | msg_hash_entry *entry; |
| 1232 | long lock_flags; |
| 1233 | |
| 1234 | lock_flags = bcmos_fastlock_lock(&bcmos_msg_register_lock); |
| 1235 | entry = _bcmos_msg_hash_find(msg_type, instance); |
| 1236 | if (!entry) |
| 1237 | { |
| 1238 | bcmos_fastlock_unlock(&bcmos_msg_register_lock, lock_flags); |
| 1239 | return BCM_ERR_NOENT; |
| 1240 | } |
| 1241 | |
| 1242 | if (entry->module_id != module_id) |
| 1243 | { |
| 1244 | bcmos_fastlock_unlock(&bcmos_msg_register_lock, lock_flags); |
| 1245 | return BCM_ERR_INVALID_OP; |
| 1246 | } |
| 1247 | |
| 1248 | SLIST_REMOVE(&msg_hash_table[hash], entry, msg_hash_entry, list); |
| 1249 | bcmos_fastlock_unlock(&bcmos_msg_register_lock, lock_flags); |
| 1250 | bcmos_free(entry); |
| 1251 | |
| 1252 | return BCM_ERR_OK; |
| 1253 | } |
| 1254 | |
| 1255 | void bcmos_msg_shutdown_mode_set(bcmos_bool shutdown_mode) |
| 1256 | { |
| 1257 | bcmos_msg_shutdown_mode = shutdown_mode; |
| 1258 | } |
| 1259 | |
| 1260 | bcmos_bool bcmos_msg_shutdown_mode_get(void) |
| 1261 | { |
| 1262 | return bcmos_msg_shutdown_mode; |
| 1263 | } |
| 1264 | |
| 1265 | /* Dispatch message to registered module */ |
| 1266 | bcmos_errno bcmos_msg_dispatch(bcmos_msg *msg, bcmos_msg_send_flags flags) |
| 1267 | { |
| 1268 | bcmos_errno err; |
| 1269 | |
| 1270 | if (unlikely(bcmos_msg_shutdown_mode)) |
| 1271 | { |
| 1272 | /* In shutdown mode, we need to acquire the same lock used to protect bcmos_msg_register() / |
| 1273 | * bcmos_msg_unregister(), since we must support calling these functions concurrently. */ |
| 1274 | msg_hash_entry *entry; |
| 1275 | bcmos_sem *sem_to_post = NULL; |
| 1276 | long lock_flags = bcmos_fastlock_lock(&bcmos_msg_register_lock); |
| 1277 | entry = _bcmos_msg_hash_find(msg->type, msg->instance); |
| 1278 | |
| 1279 | if (entry) |
| 1280 | { |
| 1281 | msg->handler = entry->handler; |
| 1282 | err = _bcmos_msg_send_to_module(entry->module_id, msg, flags, &sem_to_post); |
| 1283 | } |
| 1284 | else |
| 1285 | { |
| 1286 | /* Not found. Release automatically if requested. */ |
| 1287 | if (!(flags & BCMOS_MSG_SEND_NO_FREE_ON_ERROR)) |
| 1288 | bcmos_msg_free(msg); |
| 1289 | err = BCM_ERR_OK; |
| 1290 | } |
| 1291 | |
| 1292 | bcmos_fastlock_unlock(&bcmos_msg_register_lock, lock_flags); |
| 1293 | if (sem_to_post) |
| 1294 | bcmos_sem_post(sem_to_post); |
| 1295 | } |
| 1296 | else |
| 1297 | { |
| 1298 | msg_hash_entry *entry = _bcmos_msg_hash_find(msg->type, msg->instance); |
| 1299 | |
| 1300 | if (entry) |
| 1301 | { |
| 1302 | msg->handler = entry->handler; |
| 1303 | err = bcmos_msg_send_to_module(entry->module_id, msg, flags); |
| 1304 | } |
| 1305 | else |
| 1306 | { |
| 1307 | /* Not found. Release automatically if requested. */ |
| 1308 | BCMOS_TRACE_ERR("Can't dispatch unregistered msg %d:%d\n", msg->type, msg->instance); |
| 1309 | if (!(flags & BCMOS_MSG_SEND_NO_FREE_ON_ERROR)) |
| 1310 | bcmos_msg_free(msg); |
| 1311 | err = BCM_ERR_NOENT; |
| 1312 | } |
| 1313 | } |
| 1314 | |
| 1315 | return err; |
| 1316 | } |
| 1317 | |
| 1318 | /* |
| 1319 | * Task management |
| 1320 | */ |
| 1321 | |
| 1322 | /* |
| 1323 | * Default task handler |
| 1324 | */ |
| 1325 | /*lint -e{632,633,634} |
| 1326 | * There are a few warnings about |
| 1327 | * implicit bcmos_errno conversion to int. It is to bothersome now |
| 1328 | * to change task handler prototype everywhere and the warning is harmless |
| 1329 | */ |
| 1330 | int bcmos_dft_task_handler(long data) |
| 1331 | { |
| 1332 | bcmos_task *task = (bcmos_task *)data; |
| 1333 | long flags = 0, q_flags = 0; |
| 1334 | uint32_t active_modules; |
| 1335 | int last_module = 0; /* 1-based last handled module index */ |
| 1336 | bcmos_module *module; |
| 1337 | bcmos_msg *msg; |
| 1338 | int rc; |
| 1339 | |
| 1340 | |
| 1341 | /* Set / validate task timeout */ |
| 1342 | rc = bcmos_task_timeout_set(task, task->parm.msg_wait_timeout, task->parm.timeout_handler); |
| 1343 | if (rc) |
| 1344 | { |
| 1345 | return rc; |
| 1346 | } |
| 1347 | |
| 1348 | /* Call init callback if any */ |
| 1349 | if (task->parm.init_handler) |
| 1350 | { |
| 1351 | rc = task->parm.init_handler(task->parm.data); |
| 1352 | if (rc) |
| 1353 | { |
| 1354 | BCMOS_TRACE_ERR("Task %s: init_handler returned error %s (%d)\n", |
| 1355 | task->parm.name, bcmos_strerror((bcmos_errno)rc), rc); |
| 1356 | bcmos_task_destroy(task); |
| 1357 | return rc; |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | /* Wait for module activity */ |
| 1362 | while (!task->destroy_request) |
| 1363 | { |
| 1364 | task->current_module = BCMOS_MODULE_ID_NONE; |
| 1365 | |
| 1366 | /* Wait for module activity */ |
| 1367 | rc = bcmos_sem_wait(&task->active_sem, task->parm.msg_wait_timeout); |
| 1368 | if (rc == BCM_ERR_TIMEOUT) |
| 1369 | { |
| 1370 | F_bcmos_task_handler timeout_handler = task->parm.timeout_handler; |
| 1371 | |
| 1372 | /* Handle possible race condition */ |
| 1373 | if (!timeout_handler) |
| 1374 | continue; |
| 1375 | rc = timeout_handler(data); |
| 1376 | if (rc != BCM_ERR_OK) |
| 1377 | { |
| 1378 | BCMOS_TRACE_ERR("Task %s: terminated by timeout_handler. error %s (%d)\n", |
| 1379 | task->parm.name, bcmos_strerror(rc), rc); |
| 1380 | break; |
| 1381 | } |
| 1382 | /* Keep waiting */ |
| 1383 | continue; |
| 1384 | } |
| 1385 | |
| 1386 | /* RR active modules */ |
| 1387 | do |
| 1388 | { |
| 1389 | flags = bcmos_fastlock_lock(&task->active_lock); |
| 1390 | active_modules = (task->active_modules >> last_module); |
| 1391 | if (!active_modules) |
| 1392 | { |
| 1393 | last_module = 0; |
| 1394 | active_modules = task->active_modules; |
| 1395 | if (!active_modules) |
| 1396 | { |
| 1397 | /* No modules with work to do */ |
| 1398 | bcmos_fastlock_unlock(&task->active_lock, flags); |
| 1399 | continue; |
| 1400 | } |
| 1401 | } |
| 1402 | last_module += ffs(active_modules); |
| 1403 | BUG_ON(last_module > BCMOS_MAX_MODULES_PER_TASK); |
| 1404 | module = task->modules[last_module - 1]; |
| 1405 | BUG_ON(!module); |
| 1406 | |
| 1407 | q_flags = bcmos_fastlock_lock(&module->msgq.lock); |
| 1408 | /* Get message from the module's message queue */ |
| 1409 | msg = _bcmos_msg_get(&module->msgq); |
| 1410 | if (!msg) |
| 1411 | { |
| 1412 | bcmos_fastlock_unlock(&module->msgq.lock, q_flags); |
| 1413 | task->active_modules &= ~(1 << (last_module - 1)); |
| 1414 | bcmos_fastlock_unlock(&task->active_lock, flags); |
| 1415 | continue; |
| 1416 | } |
| 1417 | |
| 1418 | bcmos_fastlock_unlock(&module->msgq.lock, q_flags); |
| 1419 | bcmos_fastlock_unlock(&task->active_lock, flags); |
| 1420 | |
| 1421 | /* Handle the message */ |
| 1422 | if (msg->handler) |
| 1423 | { |
| 1424 | task->current_module = module->id; |
| 1425 | msg->handler(module->id, msg); |
| 1426 | } |
| 1427 | else |
| 1428 | { |
| 1429 | BCMOS_TRACE_ERR("msg->handler is not set. msg->type=%d\n", msg->type); |
| 1430 | bcmos_msg_free(msg); |
| 1431 | } |
| 1432 | |
| 1433 | } while (task->active_modules); |
| 1434 | } |
| 1435 | |
| 1436 | return 0; |
| 1437 | } |
| 1438 | |
| 1439 | /* Set task message timeout. |
| 1440 | * The function is only supported in integration mode |
| 1441 | */ |
| 1442 | bcmos_errno bcmos_task_timeout_set(bcmos_task *task, uint32_t timeout, F_bcmos_task_handler timeout_handler) |
| 1443 | { |
| 1444 | if (task->parm.handler) |
| 1445 | { |
| 1446 | BCMOS_TRACE_ERR("%s: The function is only supported in integration mode (task handler == NULL)\n", task->parm.name); |
| 1447 | return BCM_ERR_NOT_SUPPORTED; |
| 1448 | } |
| 1449 | if ((timeout && timeout != BCMOS_WAIT_FOREVER) && !timeout_handler) |
| 1450 | { |
| 1451 | BCMOS_TRACE_ERR("%s: timeout_handler is not set\n", task->parm.name); |
| 1452 | return BCM_ERR_PARM; |
| 1453 | } |
| 1454 | |
| 1455 | /* 0 means FOREVER here */ |
| 1456 | if (!timeout) |
| 1457 | timeout = BCMOS_WAIT_FOREVER; |
| 1458 | |
| 1459 | task->parm.timeout_handler = timeout_handler; |
| 1460 | task->parm.msg_wait_timeout = timeout; |
| 1461 | |
| 1462 | return BCM_ERR_OK; |
| 1463 | } |
| 1464 | |
| 1465 | /* |
| 1466 | * Module |
| 1467 | */ |
| 1468 | |
| 1469 | /* Register module */ |
| 1470 | bcmos_errno bcmos_module_create(bcmos_module_id module_id, bcmos_task *task, bcmos_module_parm *parm) |
| 1471 | { |
| 1472 | bcmos_module *module; |
| 1473 | bcmos_errno rc = BCM_ERR_OK; |
| 1474 | int i; |
| 1475 | |
| 1476 | if ((unsigned)module_id >= (unsigned)BCMOS_MODULE_ID__NUM_OF || !parm) |
| 1477 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "module %d, parm %p\n", module_id, parm); |
| 1478 | if (!task) |
| 1479 | BCMOS_TRACE_RETURN(BCM_ERR_NOT_SUPPORTED, "No task\n"); |
| 1480 | if (bcmos_modules[module_id]) |
| 1481 | BCMOS_TRACE_RETURN(BCM_ERR_ALREADY, "module_id %d\n", module_id); |
| 1482 | |
| 1483 | module = bcmos_calloc(sizeof(bcmos_module)); |
| 1484 | if (!module) |
| 1485 | BCMOS_TRACE_RETURN(BCM_ERR_NOMEM, "module_id %d\n", module_id); |
| 1486 | module->id = module_id; |
| 1487 | module->my_task = task; |
| 1488 | module->parm = *parm; |
| 1489 | module->context = (void *)parm->data; |
| 1490 | bcmos_msg_queue_nw_init(&module->msgq, &parm->qparm); |
| 1491 | /* Copy name to make sure that it is not released - in case it was on the stack */ |
| 1492 | if (module->parm.qparm.name) |
| 1493 | { |
| 1494 | strncpy(module->name, module->parm.qparm.name, sizeof(module->name) - 1); |
| 1495 | module->parm.qparm.name = module->name; |
| 1496 | } |
| 1497 | |
| 1498 | /* Assign module id */ |
| 1499 | for (i = 0; i < BCMOS_MAX_MODULES_PER_TASK; i++) |
| 1500 | { |
| 1501 | if (!task->modules[i]) |
| 1502 | { |
| 1503 | task->modules[i] = module; |
| 1504 | module->idx = i; |
| 1505 | break; |
| 1506 | } |
| 1507 | } |
| 1508 | if (i == BCMOS_MAX_MODULES_PER_TASK) |
| 1509 | { |
| 1510 | bcmos_free(module); |
| 1511 | BCMOS_TRACE_RETURN(BCM_ERR_TOO_MANY, "module_id %d\n", module_id); |
| 1512 | } |
| 1513 | |
| 1514 | bcmos_modules[module_id] = module; |
| 1515 | |
| 1516 | /* Init module */ |
| 1517 | if (parm->init) |
| 1518 | { |
| 1519 | rc = parm->init(parm->data); |
| 1520 | if (rc) |
| 1521 | bcmos_module_destroy(module_id); |
| 1522 | } |
| 1523 | |
| 1524 | return rc; |
| 1525 | } |
| 1526 | |
| 1527 | /* Un-register module */ |
| 1528 | bcmos_errno bcmos_module_destroy(bcmos_module_id module_id) |
| 1529 | { |
| 1530 | bcmos_module *module = _bcmos_module_get(module_id); |
| 1531 | bcmos_task *task; |
| 1532 | long lock_flags, q_lock_flags; |
| 1533 | bcmos_msg_list msgl_urg, msgl; |
| 1534 | |
| 1535 | if (!module) |
| 1536 | BCMOS_TRACE_RETURN(BCM_ERR_NOENT, "module_id %d\n", module_id); |
| 1537 | |
| 1538 | task = module->my_task; |
| 1539 | lock_flags = bcmos_fastlock_lock(&task->active_lock); |
| 1540 | task->modules[module->idx] = NULL; |
| 1541 | task->active_modules &= ~(1 << module->idx); |
| 1542 | |
| 1543 | /* Because we are not allowed to free memory (via bcmos_free()) when interrupts are locked, we only empty the linked list (via SLIST_INIT()) and the free comes outside the locked |
| 1544 | * section. */ |
| 1545 | q_lock_flags = bcmos_fastlock_lock(&module->msgq.lock); |
| 1546 | msgl_urg = module->msgq.msgl_urg; |
| 1547 | msgl = module->msgq.msgl; |
| 1548 | STAILQ_INIT(&module->msgq.msgl_urg); |
| 1549 | STAILQ_INIT(&module->msgq.msgl); |
| 1550 | bcmos_fastlock_unlock(&module->msgq.lock, q_lock_flags); |
| 1551 | bcmos_fastlock_unlock(&task->active_lock, lock_flags); |
| 1552 | |
| 1553 | bcmos_msg_list_destroy(&msgl_urg); |
| 1554 | bcmos_msg_list_destroy(&msgl); |
| 1555 | |
| 1556 | if (module->parm.exit) |
| 1557 | module->parm.exit(module->parm.data); |
| 1558 | bcmos_modules[module_id] = NULL; |
| 1559 | bcmos_free(module); |
| 1560 | |
| 1561 | return BCM_ERR_OK; |
| 1562 | } |
| 1563 | |
| 1564 | /* Get current module id in the current task */ |
| 1565 | bcmos_module_id bcmos_module_current(void) |
| 1566 | { |
| 1567 | bcmos_task *task = bcmos_task_current(); |
| 1568 | |
| 1569 | if (!task) |
| 1570 | return BCMOS_MODULE_ID_NONE; |
| 1571 | return task->current_module; |
| 1572 | } |
| 1573 | |
| 1574 | /* Get module context set by bcmos_module_context_set() */ |
| 1575 | void *bcmos_module_context(bcmos_module_id module_id) |
| 1576 | { |
| 1577 | bcmos_module *module = _bcmos_module_get(module_id); |
| 1578 | if (!module) |
| 1579 | return NULL; |
| 1580 | return module->context; |
| 1581 | } |
| 1582 | |
| 1583 | /* Set module context */ |
| 1584 | bcmos_errno bcmos_module_context_set(bcmos_module_id module_id, void *context) |
| 1585 | { |
| 1586 | bcmos_module *module = _bcmos_module_get(module_id); |
| 1587 | |
| 1588 | if (!module) |
| 1589 | BCMOS_TRACE_RETURN(BCM_ERR_NOENT, "module_id %d\n", module_id); |
| 1590 | module->context = context; |
| 1591 | return BCM_ERR_OK; |
| 1592 | } |
| 1593 | |
| 1594 | /* Query module info */ |
| 1595 | bcmos_errno bcmos_module_query(bcmos_module_id module_id, const bcmos_task **task, bcmos_msg_queue_info *info) |
| 1596 | { |
| 1597 | bcmos_module *module = _bcmos_module_get(module_id); |
| 1598 | |
| 1599 | if (!module) |
| 1600 | { |
| 1601 | return BCM_ERR_NOENT; |
| 1602 | } |
| 1603 | if (task) |
| 1604 | { |
| 1605 | *task = module->my_task; |
| 1606 | } |
| 1607 | if (info) |
| 1608 | { |
| 1609 | info->parm = module->parm.qparm; |
| 1610 | info->stat = module->msgq.stat; |
| 1611 | } |
| 1612 | return BCM_ERR_OK; |
| 1613 | } |
| 1614 | |
| 1615 | /* |
| 1616 | * Events |
| 1617 | */ |
| 1618 | |
| 1619 | /* This function handles event arrival in module context */ |
| 1620 | static void _bcmos_ev_in_module_handler(bcmos_module_id module_id, bcmos_msg *msg) |
| 1621 | { |
| 1622 | bcmos_event *ev = _bcmos_msg_to_event(msg); |
| 1623 | uint32_t active_bits; |
| 1624 | long lock_flags; |
| 1625 | |
| 1626 | active_bits = ev->active_bits & ev->parm.mask; |
| 1627 | ev->parm.handler(ev->id, active_bits); |
| 1628 | |
| 1629 | lock_flags = bcmos_fastlock_lock(&ev->lock); |
| 1630 | ev->active_bits &= ~active_bits; |
| 1631 | ev->is_waiting = BCMOS_TRUE; |
| 1632 | bcmos_fastlock_unlock(&ev->lock, lock_flags); |
| 1633 | } |
| 1634 | |
| 1635 | /* Release event message. Only called in exceptional situations, |
| 1636 | * such as module queue destroy. Do nothing. |
| 1637 | */ |
| 1638 | static void _bcmos_ev_msg_release(bcmos_msg *msg) |
| 1639 | { |
| 1640 | } |
| 1641 | |
| 1642 | /* Create event set */ |
| 1643 | bcmos_errno bcmos_event_create(bcmos_event_id event_id, bcmos_event_parm *parm) |
| 1644 | { |
| 1645 | bcmos_event *ev; |
| 1646 | bcmos_module *module = NULL; |
| 1647 | bcmos_errno rc; |
| 1648 | |
| 1649 | if ((unsigned)event_id >= (unsigned)BCMOS_EVENT_ID__NUM_OF) |
| 1650 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "event_id %d\n", event_id); |
| 1651 | |
| 1652 | if (_bcmos_event_get(event_id)) |
| 1653 | BCMOS_TRACE_RETURN(BCM_ERR_ALREADY, "event_id %d\n", event_id); |
| 1654 | |
| 1655 | if (parm && parm->module_id != BCMOS_MODULE_ID_NONE) |
| 1656 | { |
| 1657 | module = _bcmos_module_get(parm->module_id); |
| 1658 | if (!module) |
| 1659 | BCMOS_TRACE_RETURN(BCM_ERR_NOENT, "module_id %d\n", parm->module_id); |
| 1660 | if (!parm->handler || !parm->mask) |
| 1661 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "event_id %d, handler %p, mask %x\n", event_id, parm->handler, parm->mask); |
| 1662 | } |
| 1663 | |
| 1664 | ev = bcmos_calloc(sizeof(bcmos_event)); |
| 1665 | if (!ev) |
| 1666 | BCMOS_TRACE_RETURN(BCM_ERR_NOMEM, "event_id %d\n", event_id); |
| 1667 | |
| 1668 | ev->id = event_id; |
| 1669 | if (parm) |
| 1670 | ev->parm = *parm; |
| 1671 | bcmos_fastlock_init(&ev->lock, ev->parm.flags); |
| 1672 | { |
| 1673 | rc = bcmos_sem_create(&ev->m, 0, ev->parm.flags, ev->parm.name); |
| 1674 | if (rc) |
| 1675 | { |
| 1676 | bcmos_free(ev); |
| 1677 | return rc; |
| 1678 | } |
| 1679 | } |
| 1680 | |
| 1681 | /* Initialize event message in integration mode */ |
| 1682 | if (ev->parm.module_id != BCMOS_MODULE_ID_NONE) |
| 1683 | { |
| 1684 | ev->msg.handler = _bcmos_ev_in_module_handler; |
| 1685 | ev->msg.release = _bcmos_ev_msg_release; |
| 1686 | ev->msg.sender = BCMOS_MODULE_ID_NONE; |
| 1687 | ev->msg.type = BCMOS_MSG_ID_INTERNAL_EVENT; |
| 1688 | ev->is_waiting = BCMOS_TRUE; |
| 1689 | } |
| 1690 | |
| 1691 | /* Copy name to make sure that it is not released - in case it was on the stack */ |
| 1692 | if (ev->parm.name) |
| 1693 | { |
| 1694 | strncpy(ev->name, ev->parm.name, sizeof(ev->name) - 1); |
| 1695 | ev->parm.name = ev->name; |
| 1696 | } |
| 1697 | |
| 1698 | bcmos_events[event_id] = ev; |
| 1699 | |
| 1700 | return BCM_ERR_OK; |
| 1701 | } |
| 1702 | |
| 1703 | /* Destroy event set created by bcmos_event_create() */ |
| 1704 | bcmos_errno bcmos_event_destroy(bcmos_event_id event_id) |
| 1705 | { |
| 1706 | return BCM_ERR_NOT_SUPPORTED; |
| 1707 | } |
| 1708 | |
| 1709 | /* Raise event */ |
| 1710 | bcmos_errno bcmos_event_raise(bcmos_event_id event_id, uint32_t active_bits) |
| 1711 | { |
| 1712 | bcmos_event *ev = _bcmos_event_get(event_id); |
| 1713 | long lock_flags; |
| 1714 | |
| 1715 | if (!ev) |
| 1716 | BCMOS_TRACE_RETURN(BCM_ERR_NOENT, "event_id %d\n", event_id); |
| 1717 | |
| 1718 | lock_flags = bcmos_fastlock_lock(&ev->lock); |
| 1719 | ev->active_bits |= active_bits; |
| 1720 | if (ev->is_waiting && (ev->active_bits & ev->parm.mask)) |
| 1721 | { |
| 1722 | ev->is_waiting = BCMOS_FALSE; |
| 1723 | bcmos_fastlock_unlock(&ev->lock, lock_flags); |
| 1724 | if (ev->parm.module_id != BCMOS_MODULE_ID_NONE) |
| 1725 | bcmos_msg_send_to_module(ev->parm.module_id, &ev->msg, BCMOS_MSG_SEND_URGENT | BCMOS_MSG_SEND_NOLIMIT); |
| 1726 | else |
| 1727 | bcmos_sem_post(&ev->m); |
| 1728 | } |
| 1729 | else |
| 1730 | { |
| 1731 | bcmos_fastlock_unlock(&ev->lock, lock_flags); |
| 1732 | } |
| 1733 | |
| 1734 | return BCM_ERR_OK; |
| 1735 | } |
| 1736 | |
| 1737 | /* Wait for event */ |
| 1738 | bcmos_errno bcmos_event_recv(bcmos_event_id event_id, uint32_t mask, |
| 1739 | uint32_t timeout, uint32_t *active_bits) |
| 1740 | { |
| 1741 | bcmos_event *ev = _bcmos_event_get(event_id); |
| 1742 | long lock_flags; |
| 1743 | |
| 1744 | BUG_ON(!active_bits); |
| 1745 | if (!ev) |
| 1746 | BCMOS_TRACE_RETURN(BCM_ERR_NOENT, "event_id %d is not registered\n", event_id); |
| 1747 | |
| 1748 | lock_flags = bcmos_fastlock_lock(&ev->lock); |
| 1749 | *active_bits = ev->active_bits & mask; |
| 1750 | if (*active_bits) |
| 1751 | { |
| 1752 | ev->active_bits &= ~ *active_bits; |
| 1753 | bcmos_fastlock_unlock(&ev->lock, lock_flags); |
| 1754 | return BCM_ERR_OK; |
| 1755 | } |
| 1756 | if (!timeout) |
| 1757 | { |
| 1758 | bcmos_fastlock_unlock(&ev->lock, lock_flags); |
| 1759 | return BCM_ERR_NOENT; |
| 1760 | } |
| 1761 | |
| 1762 | /* recv with wait */ |
| 1763 | ev->is_waiting = BCMOS_TRUE; |
| 1764 | bcmos_fastlock_unlock(&ev->lock, lock_flags); |
| 1765 | |
| 1766 | /* wait for it */ |
| 1767 | bcmos_sem_wait(&ev->m, timeout); |
| 1768 | /* Either got event or timeout */ |
| 1769 | lock_flags = bcmos_fastlock_lock(&ev->lock); |
| 1770 | *active_bits = ev->active_bits & mask; |
| 1771 | ev->active_bits &= ~ *active_bits; |
| 1772 | ev->is_waiting = BCMOS_FALSE; |
| 1773 | bcmos_fastlock_unlock(&ev->lock, lock_flags); |
| 1774 | /* If we wait forever and we got an event that does not match the mask we wait on (this is the only possible reason getting here if waiting forever), then we |
| 1775 | * want to avoid returning BCM_ERR_TIMEOUT - it's not an error. */ |
| 1776 | if (timeout != BCMOS_WAIT_FOREVER && !*active_bits) |
| 1777 | return BCM_ERR_TIMEOUT; |
| 1778 | return BCM_ERR_OK; |
| 1779 | } |
| 1780 | |
| 1781 | /* |
| 1782 | * Timer |
| 1783 | */ |
| 1784 | |
| 1785 | /* compare timestamps minding wrap-around |
| 1786 | * returns delta >= 0 if ts1 >= ts2 |
| 1787 | */ |
| 1788 | static inline int32_t _bcmos_timer_ts_delta(uint32_t ts1, uint32_t ts2) |
| 1789 | { |
| 1790 | int32_t delta = (int)(ts1 - ts2); |
| 1791 | return delta; |
| 1792 | } |
| 1793 | |
| 1794 | static int32_t _bcmos_timer_compare(struct bcmos_timer *t1, struct bcmos_timer *t2) |
| 1795 | { |
| 1796 | int32_t delta = _bcmos_timer_ts_delta(t1->expire_at, t2->expire_at); |
| 1797 | #if defined(BCMOS_TIMER_RB_TREE) && !defined(BCMOS_TIMER_RB_TREE_LIST) |
| 1798 | /* FreeBSD RB tree implementation doesn't support 2 nodes with the same key */ |
| 1799 | if (!delta) |
| 1800 | delta = 1; |
| 1801 | #endif |
| 1802 | return delta; |
| 1803 | } |
| 1804 | |
| 1805 | static inline void _bcmos_start_system_timer(bcmos_timer *head) |
| 1806 | { |
| 1807 | if (head) |
| 1808 | { |
| 1809 | int32_t delay = _bcmos_timer_ts_delta(head->expire_at, bcmos_timestamp()); |
| 1810 | /* Handle rare race condition when next timer expired while we were fiddling |
| 1811 | * with the pool. Just give it 1 more "tick". System handler handles all timers |
| 1812 | * expired (<now .. now + PRECISION/2) |
| 1813 | */ |
| 1814 | if (delay <= 0) |
| 1815 | { |
| 1816 | delay = BCMOS_TIMER_PRECISION_US / 2; |
| 1817 | } |
| 1818 | bcmos_sys_timer_start(&tmr_pool.sys_timer, delay); |
| 1819 | } |
| 1820 | else |
| 1821 | { |
| 1822 | bcmos_sys_timer_stop(&tmr_pool.sys_timer); |
| 1823 | } |
| 1824 | } |
| 1825 | |
| 1826 | /* |
| 1827 | * Timer pool: RB tree or TAILQ-based implementation |
| 1828 | */ |
| 1829 | static void _bcmos_timer_pool_insert(bcmos_timer *timer, uint32_t delay, bcmos_bool start_sys_timer) |
| 1830 | { |
| 1831 | long flags; |
| 1832 | bcmos_timer *head; |
| 1833 | |
| 1834 | flags = bcmos_fastlock_lock(&tmr_pool.lock); |
| 1835 | if (BCMOS_TIMER_IS_RUNNING(timer)) |
| 1836 | { |
| 1837 | bcmos_fastlock_unlock(&tmr_pool.lock, flags); |
| 1838 | return; |
| 1839 | } |
| 1840 | timer->period = timer->parm.periodic ? delay : 0; |
| 1841 | timer->expire_at = BCMOS_ROUND_UP(bcmos_timestamp() + delay, BCMOS_TIMER_PRECISION_US / 2); |
| 1842 | TMR_POOL_INSERT(&tmr_pool, timer); |
| 1843 | timer->flags &= ~BCMOS_TIMER_FLAG_EXPIRED; |
| 1844 | timer->flags |= BCMOS_TIMER_FLAG_RUNNING; |
| 1845 | |
| 1846 | /* If new timer is at the top - kick system timer */ |
| 1847 | if (start_sys_timer) |
| 1848 | { |
| 1849 | head = TMR_POOL_FIRST(&tmr_pool); |
| 1850 | if (timer == head) |
| 1851 | { |
| 1852 | _bcmos_start_system_timer(head); |
| 1853 | } |
| 1854 | } |
| 1855 | bcmos_fastlock_unlock(&tmr_pool.lock, flags); |
| 1856 | } |
| 1857 | |
| 1858 | static void _bcmos_timer_stop(bcmos_timer *timer) |
| 1859 | { |
| 1860 | long flags; |
| 1861 | bcmos_bool was_top; |
| 1862 | bcmos_msg_queue_nw *queue; |
| 1863 | |
| 1864 | /* First take running timer out of the active pool */ |
| 1865 | flags = bcmos_fastlock_lock(&tmr_pool.lock); |
| 1866 | timer->period = 0; /* Prevent periodic timer restart */ |
| 1867 | if (BCMOS_TIMER_IS_RUNNING(timer)) |
| 1868 | { |
| 1869 | timer->flags &= ~BCMOS_TIMER_FLAG_RUNNING; |
| 1870 | was_top = (timer == TMR_POOL_FIRST(&tmr_pool)); |
| 1871 | TMR_POOL_REMOVE(&tmr_pool, timer); |
| 1872 | |
| 1873 | /* If timer was the top - stop/restart system timer */ |
| 1874 | if (was_top) |
| 1875 | { |
| 1876 | _bcmos_start_system_timer(TMR_POOL_FIRST(&tmr_pool)); |
| 1877 | } |
| 1878 | } |
| 1879 | bcmos_fastlock_unlock(&tmr_pool.lock, flags); |
| 1880 | |
| 1881 | /* Now timer is not in the active pool. Perhaps it is already in |
| 1882 | * destination module's queue. Take it out if yes. |
| 1883 | */ |
| 1884 | queue = timer->queue; |
| 1885 | if (queue) |
| 1886 | { |
| 1887 | flags = bcmos_fastlock_lock(&queue->lock); |
| 1888 | /* Check queue again because the previous check was unprotected */ |
| 1889 | if (timer->queue) |
| 1890 | { |
| 1891 | bcmos_msg_list *msg_list = ((timer->parm.flags & BCMOS_TIMER_PARM_FLAGS_NON_URGENT)) |
| 1892 | ? &queue->msgl : &queue->msgl_urg; |
| 1893 | if (STAILQ_REMOVE_SAFE(msg_list, &timer->msg, bcmos_msg, next) != NULL) |
| 1894 | { |
| 1895 | _bcmos_msgq_stat_dec(queue); |
| 1896 | } |
| 1897 | timer->queue = NULL; |
| 1898 | } |
| 1899 | timer->flags &= ~BCMOS_TIMER_FLAG_EXPIRED; |
| 1900 | bcmos_fastlock_unlock(&queue->lock, flags); |
| 1901 | } |
| 1902 | |
| 1903 | /* If timer has already expired and we weren't able to stop it - |
| 1904 | * wait for expiration callback to finish before leaving _bcmos_timer_stop() |
| 1905 | */ |
| 1906 | if (BCMOS_TIMER_IS_EXPIRED(timer)) |
| 1907 | { |
| 1908 | bcmos_task *t = bcmos_task_current(); |
| 1909 | |
| 1910 | /* Skip wait if timer is being stopped / restarted from inside the handler */ |
| 1911 | if (t != timer->task) |
| 1912 | { |
| 1913 | while (BCMOS_TIMER_IS_EXPIRED(timer) && BCMOS_TIMER_IS_VALID(timer)) |
| 1914 | { |
| 1915 | bcmos_usleep(1000); |
| 1916 | } |
| 1917 | timer->flags &= ~BCMOS_TIMER_FLAG_EXPIRED; |
| 1918 | } |
| 1919 | } |
| 1920 | } |
| 1921 | |
| 1922 | |
| 1923 | /* System timer expiration handler. |
| 1924 | * Execute all timers that expired and restart system timer |
| 1925 | */ |
| 1926 | static void _sys_timer_handler(void *data) |
| 1927 | { |
| 1928 | bcmos_timer_pool *pool = (bcmos_timer_pool *)data; |
| 1929 | bcmos_timer *timer; |
| 1930 | bcmos_timer_rc rc; |
| 1931 | long flags; |
| 1932 | |
| 1933 | BUG_ON(pool != &tmr_pool); |
| 1934 | flags = bcmos_fastlock_lock(&pool->lock); |
| 1935 | while ((timer=TMR_POOL_FIRST(pool)) != NULL) |
| 1936 | { |
| 1937 | /* Stop when reached timer that hasn't expired yet */ |
| 1938 | if (_bcmos_timer_ts_delta(timer->expire_at, bcmos_timestamp()) > BCMOS_TIMER_PRECISION_US / 2) |
| 1939 | break; |
| 1940 | timer->flags |= BCMOS_TIMER_FLAG_EXPIRED; |
| 1941 | timer->flags &= ~BCMOS_TIMER_FLAG_RUNNING; |
| 1942 | /* IT: Barrier here ? */ |
| 1943 | TMR_POOL_REMOVE(pool, timer); |
| 1944 | |
| 1945 | /* Execute handler. Unlock first and re-lock in the end |
| 1946 | * It is safe to unlock here because the top loop starts from MIN every time |
| 1947 | */ |
| 1948 | bcmos_fastlock_unlock(&pool->lock, flags); |
| 1949 | rc = timer->handler(timer, timer->parm.data); |
| 1950 | if (!timer->parm.owner) |
| 1951 | { |
| 1952 | if (rc == BCMOS_TIMER_OK && timer->period) |
| 1953 | { |
| 1954 | uint32_t interval = timer->period; |
| 1955 | timer->period = 0; |
| 1956 | _bcmos_timer_pool_insert(timer, interval, BCMOS_FALSE); |
| 1957 | } |
| 1958 | else |
| 1959 | { |
| 1960 | timer->flags &= ~BCMOS_TIMER_FLAG_EXPIRED; |
| 1961 | } |
| 1962 | } |
| 1963 | flags = bcmos_fastlock_lock(&pool->lock); |
| 1964 | } |
| 1965 | /* Finally kick system timer */ |
| 1966 | _bcmos_start_system_timer(timer); |
| 1967 | bcmos_fastlock_unlock(&pool->lock, flags); |
| 1968 | } |
| 1969 | |
| 1970 | /* Send timer expiration to the target module as urgent message. |
| 1971 | * _bcmos_timer_in_module_handler() will get called in the module context |
| 1972 | */ |
| 1973 | static bcmos_timer_rc _bcmos_timer_send_to_module_handler(bcmos_timer *timer, long data) |
| 1974 | { |
| 1975 | bcmos_errno rc; |
| 1976 | bcmos_module *module = _bcmos_module_get(timer->parm.owner); |
| 1977 | bcmos_msg_send_flags send_flags; |
| 1978 | if (!module) |
| 1979 | { |
| 1980 | /* Shouldn't happen, unless the module was destroyed */ |
| 1981 | BCMOS_TRACE_ERR("_bcmos_timer_send_to_module_handler() -- no module=%u (timer->parm.handler=0x%p)\n", timer->parm.owner, timer->parm.handler); |
| 1982 | timer->flags &= ~BCMOS_TIMER_FLAG_EXPIRED; |
| 1983 | return BCMOS_TIMER_STOP; /* will restart in module context if necessary */ |
| 1984 | } |
| 1985 | timer->queue = &module->msgq; |
| 1986 | send_flags = BCMOS_MSG_SEND_NOLIMIT; |
| 1987 | if (!((timer->parm.flags & BCMOS_TIMER_PARM_FLAGS_NON_URGENT))) |
| 1988 | send_flags |= BCMOS_MSG_SEND_URGENT; |
| 1989 | rc = bcmos_msg_send_to_module(timer->parm.owner, &timer->msg, send_flags); |
| 1990 | if (rc) |
| 1991 | { |
| 1992 | /* Shouldn't happen, unless the module was destroyed. Very short race condition here */ |
| 1993 | timer->queue = NULL; |
| 1994 | timer->flags &= ~BCMOS_TIMER_FLAG_EXPIRED; |
| 1995 | BCMOS_TRACE_ERR("_bcmos_timer_send_to_module_handler() --> %d\n", rc); |
| 1996 | } |
| 1997 | return BCMOS_TIMER_STOP; /* will restart in module context if necessary */ |
| 1998 | } |
| 1999 | |
| 2000 | /* This function handles timer expiration in module context */ |
| 2001 | static void _bcmos_timer_in_module_handler(bcmos_module_id module_id, bcmos_msg *msg) |
| 2002 | { |
| 2003 | bcmos_timer *timer = _bcmos_msg_to_timer(msg); |
| 2004 | bcmos_module *module = _bcmos_module_get(timer->parm.owner); |
| 2005 | bcmos_timer_rc rc; |
| 2006 | |
| 2007 | /* Call timer's callback function and restart the timer if necessary */ |
| 2008 | timer->queue = NULL; |
| 2009 | /* module can't be NULL here. it is checked anyway to keep static code analyzer happy */ |
| 2010 | timer->task = module ? module->my_task : (bcmos_task*)NULL; |
| 2011 | rc = timer->parm.handler(timer, timer->parm.data); |
| 2012 | timer->task = NULL; |
| 2013 | if (rc == BCMOS_TIMER_OK && timer->period) |
| 2014 | _bcmos_timer_pool_insert(timer, timer->period, BCMOS_TRUE); |
| 2015 | else |
| 2016 | timer->flags &= ~BCMOS_TIMER_FLAG_EXPIRED; |
| 2017 | } |
| 2018 | |
| 2019 | /* Release timer message. Only called in exceptional situations, |
| 2020 | * such as module queue destroy. Do nothing |
| 2021 | */ |
| 2022 | static void _bcmos_timer_msg_release(bcmos_msg *msg) |
| 2023 | { |
| 2024 | } |
| 2025 | |
| 2026 | /* Create timer */ |
| 2027 | bcmos_errno bcmos_timer_create(bcmos_timer *timer, bcmos_timer_parm *parm) |
| 2028 | { |
| 2029 | if (!timer || !parm || !parm->handler) |
| 2030 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "timer %p, parm %p handler %p\n", timer, parm, parm ? parm->handler : NULL); |
| 2031 | if (parm->owner != BCMOS_MODULE_ID_NONE && _bcmos_module_get(parm->owner) == NULL) |
| 2032 | BCMOS_TRACE_RETURN(BCM_ERR_NOENT, "module_id %d\n", parm->owner); |
| 2033 | memset(timer, 0, sizeof(bcmos_timer)); |
| 2034 | timer->parm = *parm; |
| 2035 | if (parm->owner == BCMOS_MODULE_ID_NONE) |
| 2036 | timer->handler = parm->handler; |
| 2037 | else |
| 2038 | { |
| 2039 | timer->handler = _bcmos_timer_send_to_module_handler; |
| 2040 | timer->msg.handler = _bcmos_timer_in_module_handler; |
| 2041 | timer->msg.release = _bcmos_timer_msg_release; |
| 2042 | timer->msg.sender = BCMOS_MODULE_ID_NONE; |
| 2043 | timer->msg.type = BCMOS_MSG_ID_INTERNAL_TIMER; |
| 2044 | } |
| 2045 | timer->flags |= BCMOS_TIMER_FLAG_VALID; |
| 2046 | return BCM_ERR_OK; |
| 2047 | } |
| 2048 | |
| 2049 | /* Destroy timer */ |
| 2050 | void bcmos_timer_destroy(bcmos_timer *timer) |
| 2051 | { |
| 2052 | BUG_ON(!timer); |
| 2053 | bcmos_timer_stop(timer); |
| 2054 | timer->flags &= ~BCMOS_TIMER_FLAG_VALID; |
| 2055 | } |
| 2056 | |
| 2057 | /* (Re)start timer */ |
| 2058 | void bcmos_timer_start(bcmos_timer *timer, uint32_t delay) |
| 2059 | { |
| 2060 | BUG_ON(!timer); |
| 2061 | BUG_ON(!BCMOS_TIMER_IS_VALID(timer)); |
| 2062 | if ((int32_t)delay < 0) |
| 2063 | { |
| 2064 | BCMOS_TRACE_ERR("Attempt to start timer (%s) for period longer than 2^31-1. Reduced to 2^31-1\n", |
| 2065 | timer->parm.name ? timer->parm.name : "*unnamed*"); |
| 2066 | delay = 0x7fffffff; |
| 2067 | } |
| 2068 | |
| 2069 | if (BCMOS_TIMER_IS_RUNNING(timer) || BCMOS_TIMER_IS_EXPIRED(timer)) |
| 2070 | { |
| 2071 | _bcmos_timer_stop(timer); |
| 2072 | } |
| 2073 | _bcmos_timer_pool_insert(timer, delay, BCMOS_TRUE); |
| 2074 | } |
| 2075 | |
| 2076 | /* Stop timer if running */ |
| 2077 | void bcmos_timer_stop(bcmos_timer *timer) |
| 2078 | { |
| 2079 | BUG_ON(!timer); |
| 2080 | _bcmos_timer_stop(timer); |
| 2081 | } |
| 2082 | |
| 2083 | /** Set timer handler */ |
| 2084 | bcmos_errno bcmos_timer_handler_set(bcmos_timer *timer, F_bcmos_timer_handler handler, long data) |
| 2085 | { |
| 2086 | BUG_ON(!timer); |
| 2087 | BUG_ON(!handler); |
| 2088 | timer->parm.handler = handler; |
| 2089 | timer->parm.data = data; |
| 2090 | if (timer->parm.owner == BCMOS_MODULE_ID_NONE) |
| 2091 | timer->handler = handler; |
| 2092 | return BCM_ERR_OK; |
| 2093 | } |
| 2094 | |
| 2095 | /* |
| 2096 | * Block memory pool |
| 2097 | */ |
| 2098 | |
| 2099 | /* Memory block structure: |
| 2100 | * - bcmos_memblk |
| 2101 | * - blk_size bytes of user data |
| 2102 | * - [magic - for block overflow-corruption check] |
| 2103 | * - [padding to align to pointer size] |
| 2104 | */ |
| 2105 | |
| 2106 | struct bcmos_memblk |
| 2107 | { |
| 2108 | STAILQ_ENTRY(bcmos_memblk) next; /**< Next block pointer */ |
| 2109 | bcmos_blk_pool *pool; /** pool that owns the block */ |
| 2110 | #ifdef BCMOS_MEM_DEBUG |
| 2111 | uint32_t magic; /** magic number */ |
| 2112 | #define BCMOS_MEM_MAGIC_ALLOC (('m'<<24) | ('b' << 16) | ('l' << 8) | 'k') |
| 2113 | #define BCMOS_MEM_MAGIC_FREE (('m'<<24) | ('b' << 16) | ('l' << 8) | '~') |
| 2114 | #define BCMOS_MEM_MAGIC_SUFFIX (('m'<<24) | ('b' << 16) | ('l' << 8) | 's') |
| 2115 | uint32_t lineno; /** line number where the block was allocated/released. FFU */ |
| 2116 | #endif |
| 2117 | }; |
| 2118 | |
| 2119 | /* Create byte memory pool */ |
| 2120 | bcmos_errno bcmos_blk_pool_create(bcmos_blk_pool *pool, const bcmos_blk_pool_parm *parm) |
| 2121 | { |
| 2122 | uint32_t blk_size; |
| 2123 | |
| 2124 | if (!pool || !parm || !parm->blk_size) |
| 2125 | { |
| 2126 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "pool %p, parm %p, blk_size=%u, num_blks=%u\n", |
| 2127 | pool, parm, parm ? parm->blk_size : 0, parm ? parm->num_blks : 0); |
| 2128 | } |
| 2129 | if (parm->num_blks & parm->pool_size) |
| 2130 | { |
| 2131 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "One and only one of num_blks (%u) and pool_size (%u) must be set\n", |
| 2132 | parm->num_blks, parm->pool_size); |
| 2133 | } |
| 2134 | if (parm->num_blks && parm->start != NULL) |
| 2135 | { |
| 2136 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "num_blks!=0 can't be used with start!=NULL. Use byte size instead\n"); |
| 2137 | } |
| 2138 | |
| 2139 | BCM_MEMZERO_STRUCT(pool); |
| 2140 | pool->parm = *parm; |
| 2141 | |
| 2142 | /* Copy name to make sure that it is not released - in case it was on the stack */ |
| 2143 | if (pool->parm.name) |
| 2144 | { |
| 2145 | strncpy(pool->name, pool->parm.name, sizeof(pool->name) - 1); |
| 2146 | pool->parm.name = pool->name; |
| 2147 | } |
| 2148 | |
| 2149 | /* |
| 2150 | * Calculate total block size in bytes, including overheads |
| 2151 | */ |
| 2152 | /* Round up block size to the nearest 32-bit word to make MAGIC check cheaper. |
| 2153 | * It doesn't affect the actual overhead size because of the final |
| 2154 | * rounding up to pointer size. |
| 2155 | */ |
| 2156 | pool->parm.blk_size = BCMOS_ROUND_UP(pool->parm.blk_size, sizeof(uint32_t)); |
| 2157 | blk_size = pool->parm.blk_size + sizeof(bcmos_memblk); |
| 2158 | #ifdef BCMOS_MEM_DEBUG |
| 2159 | blk_size += sizeof(uint32_t); /* room for magic after user data block */ |
| 2160 | #endif |
| 2161 | blk_size = BCMOS_ROUND_UP(blk_size, sizeof(void *)); |
| 2162 | |
| 2163 | /* Derive num_blks / pool_size from one another */ |
| 2164 | if (pool->parm.num_blks) |
| 2165 | { |
| 2166 | pool->parm.pool_size = parm->num_blks * blk_size; |
| 2167 | } |
| 2168 | else |
| 2169 | { |
| 2170 | pool->parm.num_blks = pool->parm.pool_size / blk_size; |
| 2171 | if (!pool->parm.num_blks) |
| 2172 | { |
| 2173 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "pool_size (%u) is too small\n", parm->pool_size); |
| 2174 | } |
| 2175 | } |
| 2176 | |
| 2177 | /* Allocate memory for the pool if "start" is not set */ |
| 2178 | pool->start = pool->parm.start; |
| 2179 | if (!pool->start) |
| 2180 | { |
| 2181 | pool->start = bcmos_alloc(pool->parm.pool_size); |
| 2182 | if (!pool->start) |
| 2183 | { |
| 2184 | BCMOS_TRACE_RETURN(BCM_ERR_NOMEM, "Can't allocate memory for block pool %s\n", parm->name); |
| 2185 | } |
| 2186 | } |
| 2187 | |
| 2188 | bcmos_fastlock_init(&pool->lock, parm->flags); |
| 2189 | |
| 2190 | /* Put all blocks on free list */ |
| 2191 | bcmos_blk_pool_reset(pool); |
| 2192 | |
| 2193 | pool->magic = BCMOS_BLK_POOL_VALID; |
| 2194 | if (!(pool->parm.flags & BCMOS_BLK_POOL_FLAG_MSG_POOL)) |
| 2195 | { |
| 2196 | bcmos_mutex_lock(&bcmos_res_lock); |
| 2197 | STAILQ_INSERT_TAIL(&blk_pool_list, pool, list); |
| 2198 | bcmos_total_blk_pool_size += pool->parm.pool_size; |
| 2199 | bcmos_mutex_unlock(&bcmos_res_lock); |
| 2200 | } |
| 2201 | |
| 2202 | return BCM_ERR_OK; |
| 2203 | } |
| 2204 | |
| 2205 | /* Destroy memory pool */ |
| 2206 | bcmos_errno bcmos_blk_pool_destroy(bcmos_blk_pool *pool) |
| 2207 | { |
| 2208 | if (!pool || pool->magic != BCMOS_BLK_POOL_VALID) |
| 2209 | { |
| 2210 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "pool handle is invalid\n"); |
| 2211 | } |
| 2212 | if (pool->stat.free < pool->parm.num_blks) |
| 2213 | { |
| 2214 | BCMOS_TRACE_RETURN(BCM_ERR_STATE, "%i blocks are still allocated from the pool %s\n", |
| 2215 | pool->parm.num_blks - pool->stat.free, pool->parm.name); |
| 2216 | } |
| 2217 | if (!(pool->parm.flags & BCMOS_BLK_POOL_FLAG_MSG_POOL)) |
| 2218 | { |
| 2219 | bcmos_mutex_lock(&bcmos_res_lock); |
| 2220 | STAILQ_REMOVE(&blk_pool_list, pool, bcmos_blk_pool, list); |
| 2221 | bcmos_total_blk_pool_size -= pool->parm.pool_size; |
| 2222 | bcmos_mutex_unlock(&bcmos_res_lock); |
| 2223 | } |
| 2224 | if (!pool->parm.start && pool->start) |
| 2225 | { |
| 2226 | bcmos_free(pool->start); |
| 2227 | } |
| 2228 | pool->magic = BCMOS_BLK_POOL_DELETED; |
| 2229 | return BCM_ERR_OK; |
| 2230 | } |
| 2231 | |
| 2232 | /** Release all blocks in memory pool . Block content is not affected */ |
| 2233 | void bcmos_blk_pool_reset(bcmos_blk_pool *pool) |
| 2234 | { |
| 2235 | uint32_t blk_size; |
| 2236 | bcmos_memblk *blk; |
| 2237 | uint32_t i; |
| 2238 | |
| 2239 | STAILQ_INIT(&pool->free_list); |
| 2240 | |
| 2241 | blk_size = pool->parm.blk_size + sizeof(bcmos_memblk); |
| 2242 | #ifdef BCMOS_MEM_DEBUG |
| 2243 | blk_size += sizeof(uint32_t); /* room for magic after user data block */ |
| 2244 | #endif |
| 2245 | blk_size = BCMOS_ROUND_UP(blk_size, sizeof(void *)); |
| 2246 | |
| 2247 | /* Put all blocks on free list */ |
| 2248 | blk = (bcmos_memblk *)pool->start; |
| 2249 | for (i = 0; i < pool->parm.num_blks; i++) |
| 2250 | { |
| 2251 | blk->pool = pool; |
| 2252 | STAILQ_INSERT_TAIL(&pool->free_list, blk, next); |
| 2253 | #ifdef BCMOS_MEM_DEBUG |
| 2254 | *(uint32_t*)((long)blk + sizeof(bcmos_memblk) + pool->parm.blk_size) = BCMOS_MEM_MAGIC_SUFFIX; |
| 2255 | blk->lineno = 0; |
| 2256 | blk->magic = BCMOS_MEM_MAGIC_FREE; |
| 2257 | #endif |
| 2258 | blk = (bcmos_memblk *)((long)blk + blk_size); |
| 2259 | } |
| 2260 | |
| 2261 | /* Init statistics */ |
| 2262 | memset(&pool->stat, 0, sizeof(pool->stat)); |
| 2263 | pool->stat.free = pool->parm.num_blks; |
| 2264 | } |
| 2265 | |
| 2266 | /* Allocate block from block memory pool */ |
| 2267 | void *bcmos_blk_pool_alloc(bcmos_blk_pool *pool) |
| 2268 | { |
| 2269 | bcmos_memblk *blk; |
| 2270 | long flags; |
| 2271 | |
| 2272 | #ifdef BCMOS_MEM_DEBUG |
| 2273 | BUG_ON(!pool); |
| 2274 | BUG_ON(pool->magic != BCMOS_BLK_POOL_VALID); |
| 2275 | #endif |
| 2276 | flags = bcmos_fastlock_lock(&pool->lock); |
| 2277 | blk = STAILQ_FIRST(&pool->free_list); |
| 2278 | if (blk) |
| 2279 | { |
| 2280 | STAILQ_REMOVE_HEAD(&pool->free_list, next); |
| 2281 | ++pool->stat.allocated; |
| 2282 | #ifdef BCMOS_MEM_DEBUG |
| 2283 | blk->magic = BCMOS_MEM_MAGIC_ALLOC; |
| 2284 | #endif |
| 2285 | bcmos_fastlock_unlock(&pool->lock, flags); |
| 2286 | return (void *)(blk + 1); |
| 2287 | } |
| 2288 | |
| 2289 | /* No memory */ |
| 2290 | ++pool->stat.alloc_failed; |
| 2291 | bcmos_fastlock_unlock(&pool->lock, flags); |
| 2292 | return NULL; |
| 2293 | } |
| 2294 | |
| 2295 | /* Allocate block from block memory pool and zero the block */ |
| 2296 | void *bcmos_blk_pool_calloc(bcmos_blk_pool *pool) |
| 2297 | { |
| 2298 | void *ptr = bcmos_blk_pool_alloc(pool); |
| 2299 | if (ptr) |
| 2300 | { |
| 2301 | memset(ptr, 0, pool->parm.blk_size); |
| 2302 | } |
| 2303 | return ptr; |
| 2304 | } |
| 2305 | |
| 2306 | /* Release memory allocated using bcmos_pool_byte_alloc() or bcmos_pool_blk_alloc() */ |
| 2307 | void bcmos_blk_pool_free(void *ptr) |
| 2308 | { |
| 2309 | bcmos_memblk *blk; |
| 2310 | bcmos_blk_pool *pool; |
| 2311 | long flags; |
| 2312 | |
| 2313 | blk = (bcmos_memblk *)((long)ptr - sizeof(bcmos_memblk)); |
| 2314 | pool = blk->pool; |
| 2315 | #ifdef BCMOS_MEM_DEBUG |
| 2316 | BUG_ON(blk->magic != BCMOS_MEM_MAGIC_ALLOC); |
| 2317 | BUG_ON(pool == NULL); |
| 2318 | BUG_ON(pool->magic != BCMOS_BLK_POOL_VALID); |
| 2319 | BUG_ON(*(uint32_t *)((long)ptr + pool->parm.blk_size) != BCMOS_MEM_MAGIC_SUFFIX); |
| 2320 | blk->magic = BCMOS_MEM_MAGIC_FREE; |
| 2321 | #endif |
| 2322 | flags = bcmos_fastlock_lock(&pool->lock); |
| 2323 | STAILQ_INSERT_HEAD(&pool->free_list, blk, next); |
| 2324 | ++pool->stat.released; |
| 2325 | bcmos_fastlock_unlock(&pool->lock, flags); |
| 2326 | } |
| 2327 | |
| 2328 | /* Get pool info */ |
| 2329 | bcmos_errno bcmos_blk_pool_query(const bcmos_blk_pool *pool, bcmos_blk_pool_info *info) |
| 2330 | { |
| 2331 | if (!pool || !info) |
| 2332 | { |
| 2333 | return BCM_ERR_PARM; |
| 2334 | } |
| 2335 | info->parm = pool->parm; |
| 2336 | info->stat = pool->stat; |
| 2337 | info->stat.free = pool->parm.num_blks - (info->stat.allocated - info->stat.released); |
| 2338 | return BCM_ERR_OK; |
| 2339 | } |
| 2340 | |
| 2341 | /* Block pool iterator */ |
| 2342 | bcmos_errno bcmos_blk_pool_get_next(const bcmos_blk_pool **prev) |
| 2343 | { |
| 2344 | const bcmos_blk_pool *pool; |
| 2345 | |
| 2346 | if (prev == NULL) |
| 2347 | { |
| 2348 | return BCM_ERR_PARM; |
| 2349 | } |
| 2350 | pool = *prev; |
| 2351 | if (pool && pool->magic != BCMOS_BLK_POOL_VALID) |
| 2352 | { |
| 2353 | return BCM_ERR_PARM; |
| 2354 | } |
| 2355 | if (pool) |
| 2356 | { |
| 2357 | pool = STAILQ_NEXT(pool, list); |
| 2358 | } |
| 2359 | else |
| 2360 | { |
| 2361 | pool = STAILQ_FIRST(&blk_pool_list); |
| 2362 | } |
| 2363 | *prev = pool; |
| 2364 | if (!pool) |
| 2365 | { |
| 2366 | return BCM_ERR_NO_MORE; |
| 2367 | } |
| 2368 | return BCM_ERR_OK; |
| 2369 | } |
| 2370 | |
| 2371 | /* |
| 2372 | * Message pool |
| 2373 | */ |
| 2374 | |
| 2375 | /* release message callback */ |
| 2376 | static void _bcmos_msg_pool_release(bcmos_msg *msg) |
| 2377 | { |
| 2378 | if (msg->data_release) |
| 2379 | msg->data_release(msg); |
| 2380 | bcmos_blk_pool_free(msg); |
| 2381 | } |
| 2382 | |
| 2383 | /* Create message pool */ |
| 2384 | bcmos_errno bcmos_msg_pool_create(bcmos_msg_pool *pool, const bcmos_msg_pool_parm *parm) |
| 2385 | { |
| 2386 | bcmos_blk_pool_parm pool_parm = {}; |
| 2387 | bcmos_memblk *blk; |
| 2388 | bcmos_errno err; |
| 2389 | |
| 2390 | if (!pool || !parm || !parm->size) |
| 2391 | { |
| 2392 | return BCM_ERR_PARM; |
| 2393 | } |
| 2394 | BCM_MEMZERO_STRUCT(pool); |
| 2395 | pool->parm = *parm; |
| 2396 | pool_parm.num_blks = parm->size; |
| 2397 | pool_parm.blk_size = parm->data_size + sizeof(bcmos_msg); |
| 2398 | pool_parm.flags = parm->flags | BCMOS_BLK_POOL_FLAG_MSG_POOL; |
| 2399 | pool_parm.name = parm->name; |
| 2400 | |
| 2401 | /* Create underlying block pool */ |
| 2402 | err = bcmos_blk_pool_create(&pool->blk_pool, &pool_parm); |
| 2403 | if (err) |
| 2404 | { |
| 2405 | return err; |
| 2406 | } |
| 2407 | pool->parm.name = pool->blk_pool.name; |
| 2408 | |
| 2409 | /* Pre-initialize all messages */ |
| 2410 | STAILQ_FOREACH(blk, &pool->blk_pool.free_list, next) |
| 2411 | { |
| 2412 | bcmos_msg *msg = (bcmos_msg *)(blk + 1); |
| 2413 | msg->data = (void *)(msg + 1); |
| 2414 | msg->size = pool->parm.data_size; |
| 2415 | msg->release = _bcmos_msg_pool_release; |
| 2416 | msg->data_release = parm->data_release; |
| 2417 | } |
| 2418 | bcmos_mutex_lock(&bcmos_res_lock); |
| 2419 | STAILQ_INSERT_TAIL(&msg_pool_list, &pool->blk_pool, list); |
| 2420 | bcmos_total_msg_pool_size += pool->blk_pool.parm.pool_size; |
| 2421 | bcmos_mutex_unlock(&bcmos_res_lock); |
| 2422 | |
| 2423 | return BCM_ERR_OK; |
| 2424 | } |
| 2425 | |
| 2426 | /** Destroy message pool */ |
| 2427 | bcmos_errno bcmos_msg_pool_destroy(bcmos_msg_pool *pool) |
| 2428 | { |
| 2429 | bcmos_errno rc; |
| 2430 | |
| 2431 | rc = bcmos_blk_pool_destroy(&pool->blk_pool); |
| 2432 | if (rc) |
| 2433 | return rc; |
| 2434 | |
| 2435 | bcmos_mutex_lock(&bcmos_res_lock); |
| 2436 | STAILQ_REMOVE(&msg_pool_list, &pool->blk_pool, bcmos_blk_pool, list); |
| 2437 | bcmos_total_msg_pool_size -= pool->blk_pool.parm.pool_size; |
| 2438 | bcmos_mutex_unlock(&bcmos_res_lock); |
| 2439 | |
| 2440 | pool->parm.size = pool->parm.data_size = 0; |
| 2441 | return BCM_ERR_OK; |
| 2442 | } |
| 2443 | |
| 2444 | /* Allocate message from pool */ |
| 2445 | bcmos_msg *bcmos_msg_pool_alloc(bcmos_msg_pool *pool) |
| 2446 | { |
| 2447 | return bcmos_blk_pool_alloc(&pool->blk_pool); |
| 2448 | } |
| 2449 | |
| 2450 | /* Get pool info */ |
| 2451 | bcmos_errno bcmos_msg_pool_query(const bcmos_msg_pool *pool, bcmos_msg_pool_info *info) |
| 2452 | { |
| 2453 | bcmos_blk_pool_info pool_info; |
| 2454 | bcmos_errno err; |
| 2455 | |
| 2456 | if (!pool || !info) |
| 2457 | { |
| 2458 | return BCM_ERR_PARM; |
| 2459 | } |
| 2460 | err = bcmos_blk_pool_query(&pool->blk_pool, &pool_info); |
| 2461 | if (err) |
| 2462 | { |
| 2463 | return err; |
| 2464 | } |
| 2465 | info->parm = pool->parm; |
| 2466 | info->stat = pool_info.stat; |
| 2467 | return BCM_ERR_OK; |
| 2468 | } |
| 2469 | |
| 2470 | /* Block pool iterator */ |
| 2471 | bcmos_errno bcmos_msg_pool_get_next(const bcmos_msg_pool **prev) |
| 2472 | { |
| 2473 | const bcmos_msg_pool *pool; |
| 2474 | |
| 2475 | if (prev == NULL) |
| 2476 | { |
| 2477 | return BCM_ERR_PARM; |
| 2478 | } |
| 2479 | pool = *prev; |
| 2480 | if (pool && pool->blk_pool.magic != BCMOS_BLK_POOL_VALID) |
| 2481 | { |
| 2482 | return BCM_ERR_PARM; |
| 2483 | } |
| 2484 | if (pool) |
| 2485 | { |
| 2486 | pool = container_of(STAILQ_NEXT(&pool->blk_pool, list), bcmos_msg_pool, blk_pool); |
| 2487 | } |
| 2488 | else |
| 2489 | { |
| 2490 | pool = container_of(STAILQ_FIRST(&msg_pool_list), bcmos_msg_pool, blk_pool); |
| 2491 | } |
| 2492 | *prev = pool; |
| 2493 | if (!pool) |
| 2494 | { |
| 2495 | return BCM_ERR_NO_MORE; |
| 2496 | } |
| 2497 | return BCM_ERR_OK; |
| 2498 | } |
| 2499 | |
| 2500 | /** Set up print redirection/cloning |
| 2501 | * \param[in] mode redirection/cloning mode |
| 2502 | * \param[in] cb redirection callback |
| 2503 | * \param[in] data opaque data to be passed to cb |
| 2504 | */ |
| 2505 | bcmos_errno bcmos_print_redirect(bcmos_print_redirect_mode mode, bcmos_print_redirect_cb cb, void *data) |
| 2506 | { |
| 2507 | if (mode != BCMOS_PRINT_REDIRECT_MODE_NONE && cb == NULL) |
| 2508 | { |
| 2509 | BCMOS_TRACE_RETURN(BCM_ERR_PARM, "Redirection callback must be set\n"); |
| 2510 | } |
| 2511 | print_redirect_mode = mode; |
| 2512 | if (mode == BCMOS_PRINT_REDIRECT_MODE_NONE) |
| 2513 | { |
| 2514 | print_redirect_cb = NULL; |
| 2515 | print_redirect_cb_data = NULL; |
| 2516 | } |
| 2517 | else |
| 2518 | { |
| 2519 | print_redirect_cb = cb; |
| 2520 | print_redirect_cb_data = data; |
| 2521 | } |
| 2522 | return BCM_ERR_OK; |
| 2523 | } |
| 2524 | |
| 2525 | /* Print on the console with optional cloning / redirection */ |
| 2526 | /*lint -e{454}*/ |
| 2527 | int bcmos_vprintf(const char *format, va_list ap) |
| 2528 | { |
| 2529 | int rc = 0; |
| 2530 | bcmos_bool protected_section = is_irq_mode() || is_irq_disabled(); |
| 2531 | |
| 2532 | /* Only protect if in task context */ |
| 2533 | if (!protected_section) |
| 2534 | { |
| 2535 | bcmos_mutex_lock(&bcmos_print_lock); |
| 2536 | } |
| 2537 | if (print_redirect_mode != BCMOS_PRINT_REDIRECT_MODE_REDIRECT) |
| 2538 | { |
| 2539 | rc = bcmos_sys_vprintf(format, ap); |
| 2540 | } |
| 2541 | if (print_redirect_mode != BCMOS_PRINT_REDIRECT_MODE_NONE) |
| 2542 | { |
| 2543 | rc = print_redirect_cb(print_redirect_cb_data, format, ap); |
| 2544 | } |
| 2545 | if (!protected_section) |
| 2546 | { |
| 2547 | bcmos_mutex_unlock(&bcmos_print_lock); |
| 2548 | } |
| 2549 | |
| 2550 | return rc; |
| 2551 | } |
| 2552 | /*lint -e{454}*/ |
| 2553 | |
| 2554 | /* Print on the console with optional cloning / redirection */ |
| 2555 | int bcmos_printf(const char *format, ...) |
| 2556 | { |
| 2557 | va_list args; |
| 2558 | int rc; |
| 2559 | |
| 2560 | va_start(args, format); |
| 2561 | rc = bcmos_vprintf(format, args); |
| 2562 | va_end(args); |
| 2563 | return rc; |
| 2564 | } |
| 2565 | |
| 2566 | #ifndef BCMOS_PUTCHAR_INLINE |
| 2567 | /*lint -e{454}*/ |
| 2568 | void bcmos_putchar(int c) |
| 2569 | { |
| 2570 | bcmos_bool protected_section = is_irq_mode() || is_irq_disabled(); |
| 2571 | |
| 2572 | /* Only protect if in task context */ |
| 2573 | if (!protected_section) |
| 2574 | { |
| 2575 | bcmos_mutex_lock(&bcmos_print_lock); |
| 2576 | } |
| 2577 | putchar(c); |
| 2578 | fflush(stdout); |
| 2579 | if (!protected_section) |
| 2580 | { |
| 2581 | bcmos_mutex_unlock(&bcmos_print_lock); |
| 2582 | } |
| 2583 | } |
| 2584 | /*lint +e{454}*/ |
| 2585 | #endif |
| 2586 | |
| 2587 | #ifndef BCMOS_BUF_OS_SPECIFIC |
| 2588 | |
| 2589 | /* |
| 2590 | * Buffer allocation/release |
| 2591 | */ |
| 2592 | |
| 2593 | #ifdef BCMOS_BUF_POOL_SIZE |
| 2594 | /** Create buffer pool |
| 2595 | * \param[in] num Number of buffers |
| 2596 | * \param[in] size Buffer size |
| 2597 | * \param[in] align Buffer alignment |
| 2598 | * \returns o=OK or error <0 |
| 2599 | */ |
| 2600 | static bcmos_errno bcmos_buf_pool_create(void) |
| 2601 | { |
| 2602 | bcmos_blk_pool_parm pool_parm = |
| 2603 | { |
| 2604 | .name = "sysbuf" |
| 2605 | }; |
| 2606 | bcmos_errno rc; |
| 2607 | |
| 2608 | #ifndef BCMOS_BUF_POOL_BUF_SIZE |
| 2609 | #error BCMOS_BUF_POOL_BUF_SIZE must be defined |
| 2610 | #endif |
| 2611 | |
| 2612 | /* If buffer memory should be allocated by bcmos_dma_alloc - allocate |
| 2613 | * memory for the whole pool here */ |
| 2614 | pool_parm.blk_size = BCMOS_BUF_POOL_BUF_SIZE + sizeof(bcmos_buf) + BCMTR_BUF_EXTRA_HEADROOM + |
| 2615 | 2*BCMOS_BUF_DATA_ALIGNMENT + BCMOS_BUF_DATA_GUARD; |
| 2616 | |
| 2617 | #ifdef BCMOS_BUF_IN_DMA_MEM |
| 2618 | pool_parm.pool_size = (pool_parm.blk_size + sizeof(bcmos_memblk)) * BCMOS_BUF_POOL_SIZE; |
| 2619 | pool_parm.start = bcmos_dma_alloc(0, pool_parm.pool_size); |
| 2620 | if (!pool_parm.start) |
| 2621 | return BCM_ERR_NOMEM; |
| 2622 | #else |
| 2623 | pool_parm.num_blks = BCMOS_BUF_POOL_SIZE; |
| 2624 | #endif |
| 2625 | |
| 2626 | rc = bcmos_blk_pool_create(&sys_buf_pool, &pool_parm); |
| 2627 | if (rc) |
| 2628 | { |
| 2629 | if (pool_parm.start) |
| 2630 | bcmos_dma_free(0, pool_parm.start); |
| 2631 | } |
| 2632 | |
| 2633 | return rc; |
| 2634 | } |
| 2635 | #endif |
| 2636 | |
| 2637 | /* Allocate buffer */ |
| 2638 | bcmos_buf *bcmos_buf_alloc(uint32_t size) |
| 2639 | { |
| 2640 | /* Allocate extra 2 * BCMOS_BUF_DATA_ALIGNMENT to make sure that neither data start nor end |
| 2641 | * end up in the middle of cache line |
| 2642 | */ |
| 2643 | bcmos_buf *buf; |
| 2644 | |
| 2645 | /* Allocate from the pool */ |
| 2646 | #ifdef BCMOS_BUF_POOL_SIZE |
| 2647 | |
| 2648 | if (size > BCMOS_BUF_POOL_BUF_SIZE) |
| 2649 | { |
| 2650 | BCMOS_TRACE_ERR("Attempt to allocate buffer bigger than buffer pool block size. %u > %u\n", |
| 2651 | size, BCMOS_BUF_POOL_BUF_SIZE); |
| 2652 | return NULL; |
| 2653 | } |
| 2654 | buf = bcmos_blk_pool_alloc(&sys_buf_pool); |
| 2655 | |
| 2656 | #else /* else of #if BCMOS_BUF_POOL_SIZE */ |
| 2657 | { |
| 2658 | uint32_t alloc_size = sizeof(bcmos_buf) + size + BCMTR_BUF_EXTRA_HEADROOM + |
| 2659 | 2*BCMOS_BUF_DATA_ALIGNMENT - 1 + BCMOS_BUF_DATA_GUARD; |
| 2660 | #ifdef BCMOS_BUF_DATA_UNIT_SIZE |
| 2661 | #if BCMOS_BUF_DATA_UNIT_SIZE & (BCMOS_BUF_DATA_UNIT_SIZE - 1) |
| 2662 | #error BCMOS_BUF_DATA_UNIT_SIZE must be a power of 2 |
| 2663 | #endif |
| 2664 | alloc_size = BCMOS_ROUND_UP(alloc_size, BCMOS_BUF_DATA_UNIT_SIZE); |
| 2665 | #endif |
| 2666 | #ifdef BCMOS_BUF_IN_DMA_MEM |
| 2667 | buf = bcmos_dma_alloc(0, alloc_size); |
| 2668 | #else |
| 2669 | buf = bcmos_alloc(alloc_size); |
| 2670 | #endif |
| 2671 | } |
| 2672 | #endif /* end of #if BCMOS_BUF_POOL_SIZE */ |
| 2673 | |
| 2674 | if (!buf) |
| 2675 | return NULL; |
| 2676 | buf->start = (uint8_t *)(buf + 1) + BCMOS_BUF_DATA_GUARD; |
| 2677 | buf->data = (uint8_t *)(BCMOS_ROUND_UP((long)buf->start + BCMTR_BUF_EXTRA_HEADROOM, BCMOS_BUF_DATA_ALIGNMENT)); |
| 2678 | buf->size = size + (buf->data - buf->start); |
| 2679 | buf->len = 0; |
| 2680 | #ifdef BCMOS_BUF_POOL_SIZE |
| 2681 | buf->pool = &sys_buf_pool; |
| 2682 | #else |
| 2683 | buf->pool = NULL; |
| 2684 | #endif |
| 2685 | return buf; |
| 2686 | } |
| 2687 | |
| 2688 | /* Release buffer */ |
| 2689 | void bcmos_buf_free(bcmos_buf *buf) |
| 2690 | { |
| 2691 | |
| 2692 | #ifdef BCMOS_BUF_POOL_SIZE |
| 2693 | /* Buffer might have been allocated from the system pool */ |
| 2694 | if (buf->pool) |
| 2695 | { |
| 2696 | bcmos_blk_pool_free(buf); |
| 2697 | return; |
| 2698 | } |
| 2699 | #endif |
| 2700 | |
| 2701 | #ifdef BCMOS_BUF_IN_DMA_MEM |
| 2702 | bcmos_dma_free(0, buf); |
| 2703 | #else |
| 2704 | bcmos_free(buf); |
| 2705 | #endif |
| 2706 | } |
| 2707 | |
| 2708 | #endif |
| 2709 | |
| 2710 | EXPORT_SYMBOL(bcmos_init); |
| 2711 | |
| 2712 | EXPORT_SYMBOL(bcmos_msg_queue_create); |
| 2713 | EXPORT_SYMBOL(bcmos_msg_queue_destroy); |
| 2714 | EXPORT_SYMBOL(bcmos_msg_queue_query); |
| 2715 | EXPORT_SYMBOL(bcmos_msg_queue_get_next); |
| 2716 | EXPORT_SYMBOL(bcmos_msg_send); |
| 2717 | EXPORT_SYMBOL(bcmos_msg_send_to_module); |
| 2718 | EXPORT_SYMBOL(bcmos_msg_recv); |
| 2719 | EXPORT_SYMBOL(bcmos_msg_register); |
| 2720 | EXPORT_SYMBOL(bcmos_msg_unregister); |
| 2721 | EXPORT_SYMBOL(bcmos_msg_dispatch); |
| 2722 | |
| 2723 | EXPORT_SYMBOL(bcmos_msg_qgroup_create); |
| 2724 | EXPORT_SYMBOL(bcmos_msg_qgroup_destroy); |
| 2725 | EXPORT_SYMBOL(bcmos_msg_qgroup_query); |
| 2726 | EXPORT_SYMBOL(bcmos_msg_recv_from_qgroup); |
| 2727 | EXPORT_SYMBOL(bcmos_msg_send_to_qgroup); |
| 2728 | |
| 2729 | EXPORT_SYMBOL(bcmos_task_timeout_set); |
| 2730 | EXPORT_SYMBOL(bcmos_task_get_next); |
| 2731 | |
| 2732 | EXPORT_SYMBOL(bcmos_module_create); |
| 2733 | EXPORT_SYMBOL(bcmos_module_destroy); |
| 2734 | EXPORT_SYMBOL(bcmos_module_current); |
| 2735 | EXPORT_SYMBOL(bcmos_module_context); |
| 2736 | EXPORT_SYMBOL(bcmos_module_context_set); |
| 2737 | EXPORT_SYMBOL(bcmos_module_query); |
| 2738 | |
| 2739 | EXPORT_SYMBOL(bcmos_event_create); |
| 2740 | EXPORT_SYMBOL(bcmos_event_destroy); |
| 2741 | EXPORT_SYMBOL(bcmos_event_raise); |
| 2742 | EXPORT_SYMBOL(bcmos_event_recv); |
| 2743 | |
| 2744 | EXPORT_SYMBOL(bcmos_timer_create); |
| 2745 | EXPORT_SYMBOL(bcmos_timer_destroy); |
| 2746 | EXPORT_SYMBOL(bcmos_timer_start); |
| 2747 | EXPORT_SYMBOL(bcmos_timer_stop); |
| 2748 | EXPORT_SYMBOL(bcmos_timer_handler_set); |
| 2749 | |
| 2750 | EXPORT_SYMBOL(bcmos_blk_pool_create); |
| 2751 | EXPORT_SYMBOL(bcmos_blk_pool_destroy); |
| 2752 | EXPORT_SYMBOL(bcmos_blk_pool_reset); |
| 2753 | EXPORT_SYMBOL(bcmos_blk_pool_alloc); |
| 2754 | EXPORT_SYMBOL(bcmos_blk_pool_calloc); |
| 2755 | EXPORT_SYMBOL(bcmos_blk_pool_free); |
| 2756 | EXPORT_SYMBOL(bcmos_blk_pool_query); |
| 2757 | EXPORT_SYMBOL(bcmos_blk_pool_get_next); |
| 2758 | |
| 2759 | EXPORT_SYMBOL(bcmos_msg_pool_create); |
| 2760 | EXPORT_SYMBOL(bcmos_msg_pool_alloc); |
| 2761 | EXPORT_SYMBOL(bcmos_msg_pool_query); |
| 2762 | EXPORT_SYMBOL(bcmos_msg_pool_destroy); |
| 2763 | EXPORT_SYMBOL(bcmos_msg_pool_get_next); |
| 2764 | |
| 2765 | EXPORT_SYMBOL(bcmos_print_redirect); |
| 2766 | EXPORT_SYMBOL(bcmos_printf); |
| 2767 | EXPORT_SYMBOL(bcmos_vprintf); |
| 2768 | |
| 2769 | #ifndef BCMOS_BUF_OS_SPECIFIC |
| 2770 | EXPORT_SYMBOL(bcmos_buf_alloc); |
| 2771 | EXPORT_SYMBOL(bcmos_buf_free); |
| 2772 | #endif |