Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015 The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
| 28 | /* OS abstraction libraries */ |
| 29 | #include <cdf_nbuf.h> /* cdf_nbuf_t, etc. */ |
| 30 | #include <cdf_atomic.h> /* cdf_atomic_read, etc. */ |
| 31 | #include <cdf_util.h> /* cdf_unlikely */ |
| 32 | |
| 33 | /* APIs for other modules */ |
| 34 | #include <htt.h> /* HTT_TX_EXT_TID_MGMT */ |
| 35 | #include <ol_htt_tx_api.h> /* htt_tx_desc_tid */ |
| 36 | #include <ol_txrx_api.h> /* ol_txrx_vdev_handle */ |
| 37 | #include <ol_txrx_ctrl_api.h> /* ol_txrx_sync */ |
| 38 | |
| 39 | /* internal header files relevant for all systems */ |
| 40 | #include <ol_txrx_internal.h> /* TXRX_ASSERT1 */ |
| 41 | #include <ol_txrx_types.h> /* pdev stats */ |
| 42 | #include <ol_tx_desc.h> /* ol_tx_desc */ |
| 43 | #include <ol_tx_send.h> /* ol_tx_send */ |
| 44 | #include <ol_txrx.h> |
| 45 | |
| 46 | /* internal header files relevant only for HL systems */ |
| 47 | #include <ol_tx_queue.h> /* ol_tx_enqueue */ |
| 48 | |
| 49 | /* internal header files relevant only for specific systems (Pronto) */ |
| 50 | #include <ol_txrx_encap.h> /* OL_TX_ENCAP, etc */ |
| 51 | #include <ol_tx.h> |
| 52 | #include <ol_cfg.h> |
| 53 | |
| 54 | #define TX_FLOW_START_TH 25 |
| 55 | #define TX_FLOW_STOP_TH 10 |
| 56 | #define INVALID_FLOW_ID 0xFF |
| 57 | #define MAX_INVALID_BIN 3 |
| 58 | |
| 59 | |
| 60 | #ifdef QCA_LL_TX_FLOW_GLOBAL_MGMT_POOL |
| 61 | #define TX_FLOW_MGMT_POOL_ID 0xEF |
| 62 | #define TX_FLOW_MGMT_POOL_SIZE 32 |
| 63 | |
| 64 | /** |
| 65 | * ol_tx_register_global_mgmt_pool() - register global pool for mgmt packets |
| 66 | * @pdev: pdev handler |
| 67 | * |
| 68 | * Return: none |
| 69 | */ |
| 70 | static void |
| 71 | ol_tx_register_global_mgmt_pool(struct ol_txrx_pdev_t *pdev) |
| 72 | { |
| 73 | pdev->mgmt_pool = ol_tx_create_flow_pool(TX_FLOW_MGMT_POOL_ID, |
| 74 | TX_FLOW_MGMT_POOL_SIZE); |
| 75 | if (!pdev->mgmt_pool) { |
| 76 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 77 | "Management pool creation failed\n"); |
| 78 | } |
| 79 | return; |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * ol_tx_deregister_global_mgmt_pool() - Deregister global pool for mgmt packets |
| 84 | * @pdev: pdev handler |
| 85 | * |
| 86 | * Return: none |
| 87 | */ |
| 88 | static void |
| 89 | ol_tx_deregister_global_mgmt_pool(struct ol_txrx_pdev_t *pdev) |
| 90 | { |
| 91 | ol_tx_delete_flow_pool(pdev->mgmt_pool); |
| 92 | return; |
| 93 | } |
| 94 | #else |
| 95 | static inline void |
| 96 | ol_tx_register_global_mgmt_pool(struct ol_txrx_pdev_t *pdev) |
| 97 | { |
| 98 | return; |
| 99 | } |
| 100 | static inline void |
| 101 | ol_tx_deregister_global_mgmt_pool(struct ol_txrx_pdev_t *pdev) |
| 102 | { |
| 103 | return; |
| 104 | } |
| 105 | #endif |
| 106 | |
| 107 | /** |
| 108 | * ol_tx_register_flow_control() - Register fw based tx flow control |
| 109 | * @pdev: pdev handle |
| 110 | * |
| 111 | * Return: none |
| 112 | */ |
| 113 | void ol_tx_register_flow_control(struct ol_txrx_pdev_t *pdev) |
| 114 | { |
| 115 | cdf_spinlock_init(&pdev->tx_desc.flow_pool_list_lock); |
| 116 | TAILQ_INIT(&pdev->tx_desc.flow_pool_list); |
| 117 | |
| 118 | ol_tx_register_global_mgmt_pool(pdev); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * ol_tx_deregister_flow_control() - Deregister fw based tx flow control |
| 123 | * @pdev: pdev handle |
| 124 | * |
| 125 | * Return: none |
| 126 | */ |
| 127 | void ol_tx_deregister_flow_control(struct ol_txrx_pdev_t *pdev) |
| 128 | { |
| 129 | ol_tx_deregister_global_mgmt_pool(pdev); |
| 130 | |
| 131 | cdf_spinlock_destroy(&pdev->tx_desc.flow_pool_list_lock); |
| 132 | if (!TAILQ_EMPTY(&pdev->tx_desc.flow_pool_list)) { |
| 133 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 134 | "flow pool list is not empty!!!\n"); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * ol_tx_dump_flow_pool_info() - dump global_pool and flow_pool info |
| 140 | * |
| 141 | * Return: none |
| 142 | */ |
| 143 | void ol_tx_dump_flow_pool_info(void) |
| 144 | { |
| 145 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 146 | struct ol_tx_flow_pool_t *pool = NULL; |
| 147 | struct ol_tx_flow_pool_t tmp_pool; |
| 148 | |
| 149 | |
| 150 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, "Global Pool\n"); |
| 151 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, "Total %d :: Available %d\n", |
| 152 | pdev->tx_desc.pool_size, pdev->tx_desc.num_free); |
| 153 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, "Invalid flow_pool %d\n", |
| 154 | pdev->tx_desc.num_invalid_bin); |
| 155 | |
| 156 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, "No of pool map received %d\n", |
| 157 | pdev->pool_stats.pool_map_count); |
| 158 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, "No of pool unmap received %d\n", |
| 159 | pdev->pool_stats.pool_unmap_count); |
| 160 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 161 | "Pkt dropped due to unavailablity of pool %d\n", |
| 162 | pdev->pool_stats.pkt_drop_no_pool); |
| 163 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 164 | "Pkt dropped due to unavailablity of descriptors %d\n", |
| 165 | pdev->pool_stats.pkt_drop_no_desc); |
| 166 | |
| 167 | /* |
| 168 | * Nested spin lock. |
| 169 | * Always take in below order. |
| 170 | * flow_pool_list_lock -> flow_pool_lock |
| 171 | */ |
| 172 | cdf_spin_lock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 173 | TAILQ_FOREACH(pool, &pdev->tx_desc.flow_pool_list, |
| 174 | flow_pool_list_elem) { |
| 175 | cdf_spin_lock_bh(&pool->flow_pool_lock); |
| 176 | cdf_mem_copy(&tmp_pool, pool, sizeof(tmp_pool)); |
| 177 | cdf_spin_unlock_bh(&pool->flow_pool_lock); |
| 178 | cdf_spin_unlock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 179 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 180 | "Flow_pool_id %d :: status %d\n", |
| 181 | tmp_pool.flow_pool_id, tmp_pool.status); |
| 182 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 183 | "Total %d :: Available %d :: Deficient %d\n", |
| 184 | tmp_pool.flow_pool_size, tmp_pool.avail_desc, |
| 185 | tmp_pool.deficient_desc); |
| 186 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 187 | "Start_TH %d :: Stop_TH %d\n", |
| 188 | tmp_pool.start_th, tmp_pool.stop_th); |
| 189 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 190 | "Member flow_id %d :: flow_type %d\n", |
| 191 | tmp_pool.member_flow_id, tmp_pool.flow_type); |
| 192 | cdf_spin_lock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 193 | } |
| 194 | cdf_spin_unlock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 195 | |
| 196 | return; |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * ol_tx_clear_flow_pool_stats() - clear flow pool statistics |
| 201 | * |
| 202 | * Return: none |
| 203 | */ |
| 204 | void ol_tx_clear_flow_pool_stats(void) |
| 205 | { |
| 206 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 207 | |
| 208 | if (!pdev) { |
| 209 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, "%s: pdev is null\n", |
| 210 | __func__); |
| 211 | return; |
| 212 | } |
| 213 | cdf_mem_zero(&pdev->pool_stats, sizeof(pdev->pool_stats)); |
| 214 | } |
| 215 | |
| 216 | /** |
| 217 | * ol_tx_move_desc_n() - Move n descriptors from src_pool to dst_pool. |
| 218 | * @src_pool: source pool |
| 219 | * @dst_pool: destination pool |
| 220 | * @desc_move_count: descriptor move count |
| 221 | * |
| 222 | * Return: actual descriptors moved |
| 223 | */ |
| 224 | static int ol_tx_move_desc_n(struct ol_tx_flow_pool_t *src_pool, |
| 225 | struct ol_tx_flow_pool_t *dst_pool, |
| 226 | int desc_move_count) |
| 227 | { |
| 228 | uint16_t count = 0, i; |
| 229 | struct ol_tx_desc_t *tx_desc; |
| 230 | union ol_tx_desc_list_elem_t *temp_list = NULL; |
| 231 | |
| 232 | /* Take descriptors from source pool and put it in temp_list */ |
| 233 | cdf_spin_lock_bh(&src_pool->flow_pool_lock); |
| 234 | for (i = 0; i < desc_move_count; i++) { |
| 235 | tx_desc = &src_pool->freelist->tx_desc; |
| 236 | src_pool->freelist = src_pool->freelist->next; |
| 237 | src_pool->avail_desc--; |
| 238 | ((union ol_tx_desc_list_elem_t *)tx_desc)->next = temp_list; |
| 239 | temp_list = (union ol_tx_desc_list_elem_t *)tx_desc; |
| 240 | |
| 241 | } |
| 242 | cdf_spin_unlock_bh(&src_pool->flow_pool_lock); |
| 243 | |
| 244 | /* Take descriptors from temp_list and put it in destination pool */ |
| 245 | cdf_spin_lock_bh(&dst_pool->flow_pool_lock); |
| 246 | for (i = 0; i < desc_move_count; i++) { |
| 247 | if (dst_pool->deficient_desc) |
| 248 | dst_pool->deficient_desc--; |
| 249 | else |
| 250 | break; |
| 251 | tx_desc = &temp_list->tx_desc; |
| 252 | temp_list = temp_list->next; |
| 253 | tx_desc->pool = dst_pool; |
| 254 | ((union ol_tx_desc_list_elem_t *)tx_desc)->next = |
| 255 | dst_pool->freelist; |
| 256 | dst_pool->freelist = (union ol_tx_desc_list_elem_t *)tx_desc; |
| 257 | dst_pool->avail_desc++; |
| 258 | count++; |
| 259 | } |
| 260 | cdf_spin_unlock_bh(&dst_pool->flow_pool_lock); |
| 261 | |
| 262 | /* If anything is there in temp_list put it back to source pool */ |
| 263 | cdf_spin_lock_bh(&src_pool->flow_pool_lock); |
| 264 | while (temp_list) { |
| 265 | tx_desc = &temp_list->tx_desc; |
| 266 | temp_list = temp_list->next; |
| 267 | tx_desc->pool = src_pool; |
| 268 | ((union ol_tx_desc_list_elem_t *)tx_desc)->next = |
| 269 | src_pool->freelist; |
| 270 | src_pool->freelist = (union ol_tx_desc_list_elem_t *)tx_desc; |
| 271 | src_pool->avail_desc++; |
| 272 | } |
| 273 | cdf_spin_unlock_bh(&src_pool->flow_pool_lock); |
| 274 | |
| 275 | return count; |
| 276 | } |
| 277 | |
| 278 | |
| 279 | /** |
| 280 | * ol_tx_distribute_descs_to_deficient_pools() - Distribute descriptors |
| 281 | * @src_pool: source pool |
| 282 | * |
| 283 | * Distribute all descriptors of source pool to all |
| 284 | * deficient pools as per flow_pool_list. |
| 285 | * |
| 286 | * Return: 0 for sucess |
| 287 | */ |
| 288 | int |
| 289 | ol_tx_distribute_descs_to_deficient_pools(struct ol_tx_flow_pool_t *src_pool) |
| 290 | { |
| 291 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 292 | struct ol_tx_flow_pool_t *dst_pool = NULL; |
| 293 | uint16_t desc_count = src_pool->avail_desc; |
| 294 | uint16_t desc_move_count = 0; |
| 295 | |
| 296 | if (!pdev) { |
| 297 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 298 | "%s: pdev is NULL\n", __func__); |
| 299 | return -EINVAL; |
| 300 | } |
| 301 | cdf_spin_lock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 302 | TAILQ_FOREACH(dst_pool, &pdev->tx_desc.flow_pool_list, |
| 303 | flow_pool_list_elem) { |
| 304 | cdf_spin_lock_bh(&dst_pool->flow_pool_lock); |
| 305 | if (dst_pool->deficient_desc) { |
| 306 | desc_move_count = |
| 307 | (dst_pool->deficient_desc > desc_count) ? |
| 308 | desc_count : dst_pool->deficient_desc; |
| 309 | cdf_spin_unlock_bh(&dst_pool->flow_pool_lock); |
| 310 | desc_move_count = ol_tx_move_desc_n(src_pool, |
| 311 | dst_pool, desc_move_count); |
| 312 | desc_count -= desc_move_count; |
| 313 | cdf_spin_lock_bh(&dst_pool->flow_pool_lock); |
| 314 | } |
| 315 | cdf_spin_unlock_bh(&dst_pool->flow_pool_lock); |
| 316 | if (desc_count == 0) |
| 317 | break; |
| 318 | } |
| 319 | cdf_spin_unlock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | |
| 325 | /** |
| 326 | * ol_tx_create_flow_pool() - create flow pool |
| 327 | * @flow_pool_id: flow pool id |
| 328 | * @flow_pool_size: flow pool size |
| 329 | * |
| 330 | * Return: flow_pool pointer / NULL for error |
| 331 | */ |
| 332 | struct ol_tx_flow_pool_t *ol_tx_create_flow_pool(uint8_t flow_pool_id, |
| 333 | uint16_t flow_pool_size) |
| 334 | { |
| 335 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 336 | struct ol_tx_flow_pool_t *pool; |
| 337 | uint16_t size = 0, i; |
| 338 | struct ol_tx_desc_t *tx_desc; |
| 339 | union ol_tx_desc_list_elem_t *temp_list = NULL; |
| 340 | uint32_t stop_threshold = |
| 341 | ol_cfg_get_tx_flow_stop_queue_th(pdev->ctrl_pdev); |
| 342 | uint32_t start_threshold = stop_threshold + |
| 343 | ol_cfg_get_tx_flow_start_queue_offset(pdev->ctrl_pdev); |
| 344 | |
| 345 | if (!pdev) { |
| 346 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 347 | "%s: pdev is NULL\n", __func__); |
| 348 | return NULL; |
| 349 | } |
| 350 | |
| 351 | pool = cdf_mem_malloc(sizeof(*pool)); |
| 352 | if (!pool) { |
| 353 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 354 | "%s: malloc failed\n", __func__); |
| 355 | return NULL; |
| 356 | } |
| 357 | |
| 358 | pool->flow_pool_id = flow_pool_id; |
| 359 | pool->flow_pool_size = flow_pool_size; |
| 360 | pool->status = FLOW_POOL_ACTIVE_UNPAUSED; |
| 361 | pool->start_th = (start_threshold * flow_pool_size)/100; |
| 362 | pool->stop_th = (stop_threshold * flow_pool_size)/100; |
| 363 | cdf_spinlock_init(&pool->flow_pool_lock); |
| 364 | |
| 365 | /* Take TX descriptor from global_pool and put it in temp_list*/ |
| 366 | cdf_spin_lock_bh(&pdev->tx_mutex); |
| 367 | if (pdev->tx_desc.num_free >= pool->flow_pool_size) |
| 368 | size = pool->flow_pool_size; |
| 369 | else |
| 370 | size = pdev->tx_desc.num_free; |
| 371 | |
| 372 | for (i = 0; i < size; i++) { |
| 373 | pdev->tx_desc.num_free--; |
| 374 | tx_desc = &pdev->tx_desc.freelist->tx_desc; |
| 375 | pdev->tx_desc.freelist = pdev->tx_desc.freelist->next; |
| 376 | tx_desc->pool = pool; |
| 377 | ((union ol_tx_desc_list_elem_t *)tx_desc)->next = temp_list; |
| 378 | temp_list = (union ol_tx_desc_list_elem_t *)tx_desc; |
| 379 | |
| 380 | } |
| 381 | cdf_spin_unlock_bh(&pdev->tx_mutex); |
| 382 | |
| 383 | /* put temp_list to flow_pool */ |
| 384 | pool->freelist = temp_list; |
| 385 | pool->avail_desc = size; |
| 386 | pool->deficient_desc = pool->flow_pool_size - pool->avail_desc; |
| 387 | |
| 388 | /* Add flow_pool to flow_pool_list */ |
| 389 | cdf_spin_lock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 390 | TAILQ_INSERT_TAIL(&pdev->tx_desc.flow_pool_list, pool, |
| 391 | flow_pool_list_elem); |
| 392 | cdf_spin_unlock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 393 | |
| 394 | return pool; |
| 395 | } |
| 396 | |
| 397 | /** |
| 398 | * ol_tx_delete_flow_pool() - delete flow pool |
| 399 | * @pool: flow pool pointer |
| 400 | * |
| 401 | * Delete flow_pool if all tx descriptors are available. |
| 402 | * Otherwise put it in FLOW_POOL_INVALID state. |
| 403 | * |
| 404 | * Return: 0 for success or error |
| 405 | */ |
| 406 | int ol_tx_delete_flow_pool(struct ol_tx_flow_pool_t *pool) |
| 407 | { |
| 408 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 409 | uint16_t i, size; |
| 410 | union ol_tx_desc_list_elem_t *temp_list = NULL; |
| 411 | struct ol_tx_desc_t *tx_desc = NULL; |
| 412 | |
| 413 | if (!pool) { |
| 414 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 415 | "%s: pool is NULL\n", __func__); |
| 416 | return -ENOMEM; |
| 417 | } |
| 418 | |
| 419 | cdf_spin_lock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 420 | TAILQ_REMOVE(&pdev->tx_desc.flow_pool_list, pool, flow_pool_list_elem); |
| 421 | cdf_spin_unlock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 422 | |
| 423 | cdf_spin_lock_bh(&pool->flow_pool_lock); |
| 424 | if (pool->avail_desc == pool->flow_pool_size) |
| 425 | pool->status = FLOW_POOL_INACTIVE; |
| 426 | else |
| 427 | pool->status = FLOW_POOL_INVALID; |
| 428 | |
| 429 | /* Take all free descriptors and put it in temp_list */ |
| 430 | temp_list = pool->freelist; |
| 431 | size = pool->avail_desc; |
| 432 | pool->freelist = NULL; |
| 433 | pool->avail_desc = 0; |
| 434 | |
| 435 | if (pool->status == FLOW_POOL_INACTIVE) { |
| 436 | cdf_spin_unlock_bh(&pool->flow_pool_lock); |
| 437 | /* Free flow_pool */ |
| 438 | cdf_spinlock_destroy(&pool->flow_pool_lock); |
| 439 | cdf_mem_free(pool); |
| 440 | } else { /* FLOW_POOL_INVALID case*/ |
| 441 | pool->flow_pool_size -= size; |
| 442 | pool->flow_pool_id = INVALID_FLOW_ID; |
| 443 | cdf_spin_unlock_bh(&pool->flow_pool_lock); |
| 444 | |
| 445 | pdev->tx_desc.num_invalid_bin++; |
| 446 | if (pdev->tx_desc.num_invalid_bin > MAX_INVALID_BIN) |
| 447 | ASSERT(0); |
| 448 | |
| 449 | cdf_spin_lock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 450 | TAILQ_INSERT_TAIL(&pdev->tx_desc.flow_pool_list, pool, |
| 451 | flow_pool_list_elem); |
| 452 | cdf_spin_unlock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 453 | } |
| 454 | |
| 455 | /* put free descriptors to global pool */ |
| 456 | cdf_spin_lock_bh(&pdev->tx_mutex); |
| 457 | for (i = 0; i < size; i++) { |
| 458 | tx_desc = &temp_list->tx_desc; |
| 459 | temp_list = temp_list->next; |
| 460 | |
| 461 | ((union ol_tx_desc_list_elem_t *)tx_desc)->next = |
| 462 | pdev->tx_desc.freelist; |
| 463 | pdev->tx_desc.freelist = |
| 464 | (union ol_tx_desc_list_elem_t *)tx_desc; |
| 465 | pdev->tx_desc.num_free++; |
| 466 | |
| 467 | } |
| 468 | cdf_spin_unlock_bh(&pdev->tx_mutex); |
| 469 | |
| 470 | return 0; |
| 471 | } |
| 472 | |
| 473 | |
| 474 | /** |
| 475 | * ol_tx_free_invalid_flow_pool() - free invalid pool |
| 476 | * @pool: pool |
| 477 | * |
| 478 | * Return: 0 for success or failure |
| 479 | */ |
| 480 | int ol_tx_free_invalid_flow_pool(struct ol_tx_flow_pool_t *pool) |
| 481 | { |
| 482 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 483 | |
| 484 | if ((!pdev) || (!pool) || (pool->status != FLOW_POOL_INVALID)) { |
| 485 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 486 | "%s: Invalid pool/pdev\n", __func__); |
| 487 | return -EINVAL; |
| 488 | } |
| 489 | |
| 490 | /* direclty distribute to other deficient pools */ |
| 491 | ol_tx_distribute_descs_to_deficient_pools(pool); |
| 492 | |
| 493 | cdf_spin_lock_bh(&pool->flow_pool_lock); |
| 494 | pool->flow_pool_size = pool->avail_desc; |
| 495 | cdf_spin_unlock_bh(&pool->flow_pool_lock); |
| 496 | |
| 497 | pdev->tx_desc.num_invalid_bin--; |
| 498 | |
| 499 | return ol_tx_delete_flow_pool(pool); |
| 500 | } |
| 501 | |
| 502 | /** |
| 503 | * ol_tx_get_flow_pool() - get flow_pool from flow_pool_id |
| 504 | * @flow_pool_id: flow pool id |
| 505 | * |
| 506 | * Return: flow_pool ptr / NULL if not found |
| 507 | */ |
| 508 | struct ol_tx_flow_pool_t *ol_tx_get_flow_pool(uint8_t flow_pool_id) |
| 509 | { |
| 510 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 511 | struct ol_tx_flow_pool_t *pool = NULL; |
| 512 | bool is_found = false; |
| 513 | |
| 514 | cdf_spin_lock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 515 | TAILQ_FOREACH(pool, &pdev->tx_desc.flow_pool_list, |
| 516 | flow_pool_list_elem) { |
| 517 | cdf_spin_lock_bh(&pool->flow_pool_lock); |
| 518 | if (pool->flow_pool_id == flow_pool_id) { |
| 519 | cdf_spin_unlock_bh(&pool->flow_pool_lock); |
| 520 | is_found = true; |
| 521 | break; |
| 522 | } |
| 523 | cdf_spin_unlock_bh(&pool->flow_pool_lock); |
| 524 | } |
| 525 | cdf_spin_unlock_bh(&pdev->tx_desc.flow_pool_list_lock); |
| 526 | |
| 527 | if (is_found == false) |
| 528 | pool = NULL; |
| 529 | |
| 530 | return pool; |
| 531 | |
| 532 | } |
| 533 | |
| 534 | |
| 535 | /** |
| 536 | * ol_tx_flow_pool_vdev_map() - Map flow_pool with vdev |
| 537 | * @pool: flow_pool |
| 538 | * @vdev_id: flow_id /vdev_id |
| 539 | * |
| 540 | * Return: none |
| 541 | */ |
| 542 | void ol_tx_flow_pool_vdev_map(struct ol_tx_flow_pool_t *pool, |
| 543 | uint8_t vdev_id) |
| 544 | { |
| 545 | ol_txrx_vdev_handle vdev; |
| 546 | |
| 547 | vdev = ol_txrx_get_vdev_from_vdev_id(vdev_id); |
| 548 | if (!vdev) { |
| 549 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 550 | "%s: invalid vdev_id %d\n", |
| 551 | __func__, vdev_id); |
| 552 | return; |
| 553 | } |
| 554 | |
| 555 | vdev->pool = pool; |
| 556 | cdf_spin_lock_bh(&pool->flow_pool_lock); |
| 557 | pool->member_flow_id = vdev_id; |
| 558 | cdf_spin_unlock_bh(&pool->flow_pool_lock); |
| 559 | |
| 560 | return; |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * ol_tx_flow_pool_vdev_unmap() - Unmap flow_pool from vdev |
| 565 | * @pool: flow_pool |
| 566 | * @vdev_id: flow_id /vdev_id |
| 567 | * |
| 568 | * Return: none |
| 569 | */ |
| 570 | void ol_tx_flow_pool_vdev_unmap(struct ol_tx_flow_pool_t *pool, |
| 571 | uint8_t vdev_id) |
| 572 | { |
| 573 | ol_txrx_vdev_handle vdev; |
| 574 | |
| 575 | vdev = ol_txrx_get_vdev_from_vdev_id(vdev_id); |
| 576 | if (!vdev) { |
| 577 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 578 | "%s: invalid vdev_id %d\n", |
| 579 | __func__, vdev_id); |
| 580 | return; |
| 581 | } |
| 582 | |
| 583 | vdev->pool = NULL; |
| 584 | cdf_spin_lock_bh(&pool->flow_pool_lock); |
| 585 | pool->member_flow_id = INVALID_FLOW_ID; |
| 586 | cdf_spin_unlock_bh(&pool->flow_pool_lock); |
| 587 | |
| 588 | return; |
| 589 | } |
| 590 | |
| 591 | /** |
| 592 | * ol_tx_flow_pool_map_handler() - Map flow_id with pool of descriptors |
| 593 | * @flow_id: flow id |
| 594 | * @flow_type: flow type |
| 595 | * @flow_pool_id: pool id |
| 596 | * @flow_pool_size: pool size |
| 597 | * |
| 598 | * Process below target to host message |
| 599 | * HTT_T2H_MSG_TYPE_FLOW_POOL_MAP |
| 600 | * |
| 601 | * Return: none |
| 602 | */ |
| 603 | void ol_tx_flow_pool_map_handler(uint8_t flow_id, uint8_t flow_type, |
| 604 | uint8_t flow_pool_id, uint16_t flow_pool_size) |
| 605 | { |
| 606 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 607 | struct ol_tx_flow_pool_t *pool; |
| 608 | uint8_t pool_create = 0; |
| 609 | enum htt_flow_type type = flow_type; |
| 610 | |
| 611 | |
| 612 | TXRX_PRINT(TXRX_PRINT_LEVEL_INFO1, |
| 613 | "%s: flow_id %d flow_type %d flow_pool_id %d flow_pool_size %d\n", |
| 614 | __func__, flow_id, flow_type, flow_pool_id, flow_pool_size); |
| 615 | |
| 616 | if (cdf_unlikely(!pdev)) { |
| 617 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 618 | "%s: pdev is NULL", __func__); |
| 619 | return; |
| 620 | } |
| 621 | pdev->pool_stats.pool_map_count++; |
| 622 | |
| 623 | pool = ol_tx_get_flow_pool(flow_pool_id); |
| 624 | if (!pool) { |
| 625 | pool = ol_tx_create_flow_pool(flow_pool_id, flow_pool_size); |
| 626 | if (pool == NULL) { |
| 627 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 628 | "%s: creation of flow_pool %d size %d failed\n", |
| 629 | __func__, flow_pool_id, flow_pool_size); |
| 630 | return; |
| 631 | } |
| 632 | pool_create = 1; |
| 633 | } |
| 634 | |
| 635 | switch (type) { |
| 636 | |
| 637 | case FLOW_TYPE_VDEV: |
| 638 | ol_tx_flow_pool_vdev_map(pool, flow_id); |
| 639 | break; |
| 640 | default: |
| 641 | if (pool_create) |
| 642 | ol_tx_delete_flow_pool(pool); |
| 643 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 644 | "%s: flow type %d not supported !!!\n", |
| 645 | __func__, type); |
| 646 | break; |
| 647 | } |
| 648 | |
| 649 | return; |
| 650 | } |
| 651 | |
| 652 | /** |
| 653 | * ol_tx_flow_pool_unmap_handler() - Unmap flow_id from pool of descriptors |
| 654 | * @flow_id: flow id |
| 655 | * @flow_type: flow type |
| 656 | * @flow_pool_id: pool id |
| 657 | * |
| 658 | * Process below target to host message |
| 659 | * HTT_T2H_MSG_TYPE_FLOW_POOL_UNMAP |
| 660 | * |
| 661 | * Return: none |
| 662 | */ |
| 663 | void ol_tx_flow_pool_unmap_handler(uint8_t flow_id, uint8_t flow_type, |
| 664 | uint8_t flow_pool_id) |
| 665 | { |
| 666 | struct ol_txrx_pdev_t *pdev = cds_get_context(CDF_MODULE_ID_TXRX); |
| 667 | struct ol_tx_flow_pool_t *pool; |
| 668 | enum htt_flow_type type = flow_type; |
| 669 | |
| 670 | TXRX_PRINT(TXRX_PRINT_LEVEL_INFO1, |
| 671 | "%s: flow_id %d flow_type %d flow_pool_id %d\n", |
| 672 | __func__, flow_id, flow_type, flow_pool_id); |
| 673 | |
| 674 | if (cdf_unlikely(!pdev)) { |
| 675 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 676 | "%s: pdev is NULL", __func__); |
| 677 | return; |
| 678 | } |
| 679 | pdev->pool_stats.pool_unmap_count++; |
| 680 | |
| 681 | pool = ol_tx_get_flow_pool(flow_pool_id); |
| 682 | if (!pool) { |
| 683 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 684 | "%s: flow_pool not available flow_pool_id %d\n", |
| 685 | __func__, type); |
| 686 | return; |
| 687 | } |
| 688 | |
| 689 | switch (type) { |
| 690 | |
| 691 | case FLOW_TYPE_VDEV: |
| 692 | ol_tx_flow_pool_vdev_unmap(pool, flow_id); |
| 693 | break; |
| 694 | default: |
| 695 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 696 | "%s: flow type %d not supported !!!\n", |
| 697 | __func__, type); |
| 698 | return; |
| 699 | } |
| 700 | |
| 701 | /* only delete if all descriptors are available */ |
| 702 | ol_tx_delete_flow_pool(pool); |
| 703 | |
| 704 | return; |
| 705 | } |
| 706 | |
| 707 | |