1 /* 2 * Marvell Wireless LAN device driver: commands and events 3 * 4 * Copyright (C) 2011-2014, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20 #include "decl.h" 21 #include "ioctl.h" 22 #include "util.h" 23 #include "fw.h" 24 #include "main.h" 25 #include "wmm.h" 26 #include "11n.h" 27 #include "11ac.h" 28 29 /* 30 * This function initializes a command node. 31 * 32 * The actual allocation of the node is not done by this function. It only 33 * initiates a node by filling it with default parameters. Similarly, 34 * allocation of the different buffers used (IOCTL buffer, data buffer) are 35 * not done by this function either. 36 */ 37 static void 38 mwifiex_init_cmd_node(struct mwifiex_private *priv, 39 struct cmd_ctrl_node *cmd_node, 40 u32 cmd_oid, void *data_buf, bool sync) 41 { 42 cmd_node->priv = priv; 43 cmd_node->cmd_oid = cmd_oid; 44 if (sync) { 45 cmd_node->wait_q_enabled = true; 46 cmd_node->cmd_wait_q_woken = false; 47 cmd_node->condition = &cmd_node->cmd_wait_q_woken; 48 } 49 cmd_node->data_buf = data_buf; 50 cmd_node->cmd_skb = cmd_node->skb; 51 } 52 53 /* 54 * This function returns a command node from the free queue depending upon 55 * availability. 56 */ 57 static struct cmd_ctrl_node * 58 mwifiex_get_cmd_node(struct mwifiex_adapter *adapter) 59 { 60 struct cmd_ctrl_node *cmd_node; 61 unsigned long flags; 62 63 spin_lock_irqsave(&adapter->cmd_free_q_lock, flags); 64 if (list_empty(&adapter->cmd_free_q)) { 65 mwifiex_dbg(adapter, ERROR, 66 "GET_CMD_NODE: cmd node not available\n"); 67 spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags); 68 return NULL; 69 } 70 cmd_node = list_first_entry(&adapter->cmd_free_q, 71 struct cmd_ctrl_node, list); 72 list_del(&cmd_node->list); 73 spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags); 74 75 return cmd_node; 76 } 77 78 /* 79 * This function cleans up a command node. 80 * 81 * The function resets the fields including the buffer pointers. 82 * This function does not try to free the buffers. They must be 83 * freed before calling this function. 84 * 85 * This function will however call the receive completion callback 86 * in case a response buffer is still available before resetting 87 * the pointer. 88 */ 89 static void 90 mwifiex_clean_cmd_node(struct mwifiex_adapter *adapter, 91 struct cmd_ctrl_node *cmd_node) 92 { 93 cmd_node->cmd_oid = 0; 94 cmd_node->cmd_flag = 0; 95 cmd_node->data_buf = NULL; 96 cmd_node->wait_q_enabled = false; 97 98 if (cmd_node->cmd_skb) 99 skb_trim(cmd_node->cmd_skb, 0); 100 101 if (cmd_node->resp_skb) { 102 adapter->if_ops.cmdrsp_complete(adapter, cmd_node->resp_skb); 103 cmd_node->resp_skb = NULL; 104 } 105 } 106 107 /* 108 * This function returns a command to the command free queue. 109 * 110 * The function also calls the completion callback if required, before 111 * cleaning the command node and re-inserting it into the free queue. 112 */ 113 static void 114 mwifiex_insert_cmd_to_free_q(struct mwifiex_adapter *adapter, 115 struct cmd_ctrl_node *cmd_node) 116 { 117 unsigned long flags; 118 119 if (!cmd_node) 120 return; 121 122 if (cmd_node->wait_q_enabled) 123 mwifiex_complete_cmd(adapter, cmd_node); 124 /* Clean the node */ 125 mwifiex_clean_cmd_node(adapter, cmd_node); 126 127 /* Insert node into cmd_free_q */ 128 spin_lock_irqsave(&adapter->cmd_free_q_lock, flags); 129 list_add_tail(&cmd_node->list, &adapter->cmd_free_q); 130 spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags); 131 } 132 133 /* This function reuses a command node. */ 134 void mwifiex_recycle_cmd_node(struct mwifiex_adapter *adapter, 135 struct cmd_ctrl_node *cmd_node) 136 { 137 struct host_cmd_ds_command *host_cmd = (void *)cmd_node->cmd_skb->data; 138 139 mwifiex_insert_cmd_to_free_q(adapter, cmd_node); 140 141 atomic_dec(&adapter->cmd_pending); 142 mwifiex_dbg(adapter, CMD, 143 "cmd: FREE_CMD: cmd=%#x, cmd_pending=%d\n", 144 le16_to_cpu(host_cmd->command), 145 atomic_read(&adapter->cmd_pending)); 146 } 147 148 /* 149 * This function sends a host command to the firmware. 150 * 151 * The function copies the host command into the driver command 152 * buffer, which will be transferred to the firmware later by the 153 * main thread. 154 */ 155 static int mwifiex_cmd_host_cmd(struct mwifiex_private *priv, 156 struct host_cmd_ds_command *cmd, 157 struct mwifiex_ds_misc_cmd *pcmd_ptr) 158 { 159 /* Copy the HOST command to command buffer */ 160 memcpy(cmd, pcmd_ptr->cmd, pcmd_ptr->len); 161 mwifiex_dbg(priv->adapter, CMD, 162 "cmd: host cmd size = %d\n", pcmd_ptr->len); 163 return 0; 164 } 165 166 /* 167 * This function downloads a command to the firmware. 168 * 169 * The function performs sanity tests, sets the command sequence 170 * number and size, converts the header fields to CPU format before 171 * sending. Afterwards, it logs the command ID and action for debugging 172 * and sets up the command timeout timer. 173 */ 174 static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv, 175 struct cmd_ctrl_node *cmd_node) 176 { 177 178 struct mwifiex_adapter *adapter = priv->adapter; 179 int ret; 180 struct host_cmd_ds_command *host_cmd; 181 uint16_t cmd_code; 182 uint16_t cmd_size; 183 unsigned long flags; 184 __le32 tmp; 185 186 if (!adapter || !cmd_node) 187 return -1; 188 189 host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data); 190 191 /* Sanity test */ 192 if (host_cmd == NULL || host_cmd->size == 0) { 193 mwifiex_dbg(adapter, ERROR, 194 "DNLD_CMD: host_cmd is null\t" 195 "or cmd size is 0, not sending\n"); 196 if (cmd_node->wait_q_enabled) 197 adapter->cmd_wait_q.status = -1; 198 mwifiex_recycle_cmd_node(adapter, cmd_node); 199 return -1; 200 } 201 202 cmd_code = le16_to_cpu(host_cmd->command); 203 cmd_size = le16_to_cpu(host_cmd->size); 204 205 if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET && 206 cmd_code != HostCmd_CMD_FUNC_SHUTDOWN && 207 cmd_code != HostCmd_CMD_FUNC_INIT) { 208 mwifiex_dbg(adapter, ERROR, 209 "DNLD_CMD: FW in reset state, ignore cmd %#x\n", 210 cmd_code); 211 mwifiex_recycle_cmd_node(adapter, cmd_node); 212 queue_work(adapter->workqueue, &adapter->main_work); 213 return -1; 214 } 215 216 /* Set command sequence number */ 217 adapter->seq_num++; 218 host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO 219 (adapter->seq_num, 220 cmd_node->priv->bss_num, 221 cmd_node->priv->bss_type)); 222 223 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); 224 adapter->curr_cmd = cmd_node; 225 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); 226 227 /* Adjust skb length */ 228 if (cmd_node->cmd_skb->len > cmd_size) 229 /* 230 * cmd_size is less than sizeof(struct host_cmd_ds_command). 231 * Trim off the unused portion. 232 */ 233 skb_trim(cmd_node->cmd_skb, cmd_size); 234 else if (cmd_node->cmd_skb->len < cmd_size) 235 /* 236 * cmd_size is larger than sizeof(struct host_cmd_ds_command) 237 * because we have appended custom IE TLV. Increase skb length 238 * accordingly. 239 */ 240 skb_put(cmd_node->cmd_skb, cmd_size - cmd_node->cmd_skb->len); 241 242 mwifiex_dbg(adapter, CMD, 243 "cmd: DNLD_CMD: %#x, act %#x, len %d, seqno %#x\n", 244 cmd_code, 245 get_unaligned_le16((u8 *)host_cmd + S_DS_GEN), 246 cmd_size, le16_to_cpu(host_cmd->seq_num)); 247 mwifiex_dbg_dump(adapter, CMD_D, "cmd buffer:", host_cmd, cmd_size); 248 249 if (adapter->iface_type == MWIFIEX_USB) { 250 tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD); 251 skb_push(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN); 252 memcpy(cmd_node->cmd_skb->data, &tmp, MWIFIEX_TYPE_LEN); 253 adapter->cmd_sent = true; 254 ret = adapter->if_ops.host_to_card(adapter, 255 MWIFIEX_USB_EP_CMD_EVENT, 256 cmd_node->cmd_skb, NULL); 257 skb_pull(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN); 258 if (ret == -EBUSY) 259 cmd_node->cmd_skb = NULL; 260 } else { 261 skb_push(cmd_node->cmd_skb, adapter->intf_hdr_len); 262 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD, 263 cmd_node->cmd_skb, NULL); 264 skb_pull(cmd_node->cmd_skb, adapter->intf_hdr_len); 265 } 266 267 if (ret == -1) { 268 mwifiex_dbg(adapter, ERROR, 269 "DNLD_CMD: host to card failed\n"); 270 if (adapter->iface_type == MWIFIEX_USB) 271 adapter->cmd_sent = false; 272 if (cmd_node->wait_q_enabled) 273 adapter->cmd_wait_q.status = -1; 274 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 275 276 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); 277 adapter->curr_cmd = NULL; 278 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); 279 280 adapter->dbg.num_cmd_host_to_card_failure++; 281 return -1; 282 } 283 284 /* Save the last command id and action to debug log */ 285 adapter->dbg.last_cmd_index = 286 (adapter->dbg.last_cmd_index + 1) % DBG_CMD_NUM; 287 adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index] = cmd_code; 288 adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index] = 289 get_unaligned_le16((u8 *)host_cmd + S_DS_GEN); 290 291 /* Clear BSS_NO_BITS from HostCmd */ 292 cmd_code &= HostCmd_CMD_ID_MASK; 293 294 /* Setup the timer after transmit command */ 295 mod_timer(&adapter->cmd_timer, 296 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S)); 297 298 return 0; 299 } 300 301 /* 302 * This function downloads a sleep confirm command to the firmware. 303 * 304 * The function performs sanity tests, sets the command sequence 305 * number and size, converts the header fields to CPU format before 306 * sending. 307 * 308 * No responses are needed for sleep confirm command. 309 */ 310 static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter) 311 { 312 int ret; 313 struct mwifiex_private *priv; 314 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = 315 (struct mwifiex_opt_sleep_confirm *) 316 adapter->sleep_cfm->data; 317 struct sk_buff *sleep_cfm_tmp; 318 __le32 tmp; 319 320 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 321 322 adapter->seq_num++; 323 sleep_cfm_buf->seq_num = 324 cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO 325 (adapter->seq_num, priv->bss_num, 326 priv->bss_type))); 327 328 mwifiex_dbg(adapter, CMD, 329 "cmd: DNLD_CMD: %#x, act %#x, len %d, seqno %#x\n", 330 le16_to_cpu(sleep_cfm_buf->command), 331 le16_to_cpu(sleep_cfm_buf->action), 332 le16_to_cpu(sleep_cfm_buf->size), 333 le16_to_cpu(sleep_cfm_buf->seq_num)); 334 mwifiex_dbg_dump(adapter, CMD_D, "SLEEP_CFM buffer: ", sleep_cfm_buf, 335 le16_to_cpu(sleep_cfm_buf->size)); 336 337 if (adapter->iface_type == MWIFIEX_USB) { 338 sleep_cfm_tmp = 339 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 340 + MWIFIEX_TYPE_LEN); 341 skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm) 342 + MWIFIEX_TYPE_LEN); 343 tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD); 344 memcpy(sleep_cfm_tmp->data, &tmp, MWIFIEX_TYPE_LEN); 345 memcpy(sleep_cfm_tmp->data + MWIFIEX_TYPE_LEN, 346 adapter->sleep_cfm->data, 347 sizeof(struct mwifiex_opt_sleep_confirm)); 348 ret = adapter->if_ops.host_to_card(adapter, 349 MWIFIEX_USB_EP_CMD_EVENT, 350 sleep_cfm_tmp, NULL); 351 if (ret != -EBUSY) 352 dev_kfree_skb_any(sleep_cfm_tmp); 353 } else { 354 skb_push(adapter->sleep_cfm, adapter->intf_hdr_len); 355 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD, 356 adapter->sleep_cfm, NULL); 357 skb_pull(adapter->sleep_cfm, adapter->intf_hdr_len); 358 } 359 360 if (ret == -1) { 361 mwifiex_dbg(adapter, ERROR, "SLEEP_CFM: failed\n"); 362 adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure++; 363 return -1; 364 } 365 366 if (!le16_to_cpu(sleep_cfm_buf->resp_ctrl)) 367 /* Response is not needed for sleep confirm command */ 368 adapter->ps_state = PS_STATE_SLEEP; 369 else 370 adapter->ps_state = PS_STATE_SLEEP_CFM; 371 372 if (!le16_to_cpu(sleep_cfm_buf->resp_ctrl) && 373 (adapter->is_hs_configured && 374 !adapter->sleep_period.period)) { 375 adapter->pm_wakeup_card_req = true; 376 mwifiex_hs_activated_event(mwifiex_get_priv 377 (adapter, MWIFIEX_BSS_ROLE_ANY), true); 378 } 379 380 return ret; 381 } 382 383 /* 384 * This function allocates the command buffers and links them to 385 * the command free queue. 386 * 387 * The driver uses a pre allocated number of command buffers, which 388 * are created at driver initializations and freed at driver cleanup. 389 * Every command needs to obtain a command buffer from this pool before 390 * it can be issued. The command free queue lists the command buffers 391 * currently free to use, while the command pending queue lists the 392 * command buffers already in use and awaiting handling. Command buffers 393 * are returned to the free queue after use. 394 */ 395 int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter) 396 { 397 struct cmd_ctrl_node *cmd_array; 398 u32 i; 399 400 /* Allocate and initialize struct cmd_ctrl_node */ 401 cmd_array = kcalloc(MWIFIEX_NUM_OF_CMD_BUFFER, 402 sizeof(struct cmd_ctrl_node), GFP_KERNEL); 403 if (!cmd_array) 404 return -ENOMEM; 405 406 adapter->cmd_pool = cmd_array; 407 408 /* Allocate and initialize command buffers */ 409 for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) { 410 cmd_array[i].skb = dev_alloc_skb(MWIFIEX_SIZE_OF_CMD_BUFFER); 411 if (!cmd_array[i].skb) { 412 mwifiex_dbg(adapter, ERROR, 413 "unable to allocate command buffer\n"); 414 return -ENOMEM; 415 } 416 } 417 418 for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) 419 mwifiex_insert_cmd_to_free_q(adapter, &cmd_array[i]); 420 421 return 0; 422 } 423 424 /* 425 * This function frees the command buffers. 426 * 427 * The function calls the completion callback for all the command 428 * buffers that still have response buffers associated with them. 429 */ 430 int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter) 431 { 432 struct cmd_ctrl_node *cmd_array; 433 u32 i; 434 435 /* Need to check if cmd pool is allocated or not */ 436 if (!adapter->cmd_pool) { 437 mwifiex_dbg(adapter, FATAL, 438 "info: FREE_CMD_BUF: cmd_pool is null\n"); 439 return 0; 440 } 441 442 cmd_array = adapter->cmd_pool; 443 444 /* Release shared memory buffers */ 445 for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) { 446 if (cmd_array[i].skb) { 447 mwifiex_dbg(adapter, CMD, 448 "cmd: free cmd buffer %d\n", i); 449 dev_kfree_skb_any(cmd_array[i].skb); 450 } 451 if (!cmd_array[i].resp_skb) 452 continue; 453 454 if (adapter->iface_type == MWIFIEX_USB) 455 adapter->if_ops.cmdrsp_complete(adapter, 456 cmd_array[i].resp_skb); 457 else 458 dev_kfree_skb_any(cmd_array[i].resp_skb); 459 } 460 /* Release struct cmd_ctrl_node */ 461 if (adapter->cmd_pool) { 462 mwifiex_dbg(adapter, CMD, 463 "cmd: free cmd pool\n"); 464 kfree(adapter->cmd_pool); 465 adapter->cmd_pool = NULL; 466 } 467 468 return 0; 469 } 470 471 /* 472 * This function handles events generated by firmware. 473 * 474 * Event body of events received from firmware are not used (though they are 475 * saved), only the event ID is used. Some events are re-invoked by 476 * the driver, with a new event body. 477 * 478 * After processing, the function calls the completion callback 479 * for cleanup. 480 */ 481 int mwifiex_process_event(struct mwifiex_adapter *adapter) 482 { 483 int ret, i; 484 struct mwifiex_private *priv = 485 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 486 struct sk_buff *skb = adapter->event_skb; 487 u32 eventcause; 488 struct mwifiex_rxinfo *rx_info; 489 490 if ((adapter->event_cause & EVENT_ID_MASK) == EVENT_RADAR_DETECTED) { 491 for (i = 0; i < adapter->priv_num; i++) { 492 priv = adapter->priv[i]; 493 if (priv && mwifiex_is_11h_active(priv)) { 494 adapter->event_cause |= 495 ((priv->bss_num & 0xff) << 16) | 496 ((priv->bss_type & 0xff) << 24); 497 break; 498 } 499 } 500 } 501 502 eventcause = adapter->event_cause; 503 504 /* Save the last event to debug log */ 505 adapter->dbg.last_event_index = 506 (adapter->dbg.last_event_index + 1) % DBG_CMD_NUM; 507 adapter->dbg.last_event[adapter->dbg.last_event_index] = 508 (u16) eventcause; 509 510 /* Get BSS number and corresponding priv */ 511 priv = mwifiex_get_priv_by_id(adapter, EVENT_GET_BSS_NUM(eventcause), 512 EVENT_GET_BSS_TYPE(eventcause)); 513 if (!priv) 514 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 515 516 /* Clear BSS_NO_BITS from event */ 517 eventcause &= EVENT_ID_MASK; 518 adapter->event_cause = eventcause; 519 520 if (skb) { 521 rx_info = MWIFIEX_SKB_RXCB(skb); 522 memset(rx_info, 0, sizeof(*rx_info)); 523 rx_info->bss_num = priv->bss_num; 524 rx_info->bss_type = priv->bss_type; 525 mwifiex_dbg_dump(adapter, EVT_D, "Event Buf:", 526 skb->data, skb->len); 527 } 528 529 mwifiex_dbg(adapter, EVENT, "EVENT: cause: %#x\n", eventcause); 530 531 if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) 532 ret = mwifiex_process_uap_event(priv); 533 else 534 ret = mwifiex_process_sta_event(priv); 535 536 adapter->event_cause = 0; 537 adapter->event_skb = NULL; 538 adapter->if_ops.event_complete(adapter, skb); 539 540 return ret; 541 } 542 543 /* 544 * This function prepares a command and send it to the firmware. 545 * 546 * Preparation includes - 547 * - Sanity tests to make sure the card is still present or the FW 548 * is not reset 549 * - Getting a new command node from the command free queue 550 * - Initializing the command node for default parameters 551 * - Fill up the non-default parameters and buffer pointers 552 * - Add the command to pending queue 553 */ 554 int mwifiex_send_cmd(struct mwifiex_private *priv, u16 cmd_no, 555 u16 cmd_action, u32 cmd_oid, void *data_buf, bool sync) 556 { 557 int ret; 558 struct mwifiex_adapter *adapter = priv->adapter; 559 struct cmd_ctrl_node *cmd_node; 560 struct host_cmd_ds_command *cmd_ptr; 561 562 if (!adapter) { 563 pr_err("PREP_CMD: adapter is NULL\n"); 564 return -1; 565 } 566 567 if (adapter->is_suspended) { 568 mwifiex_dbg(adapter, ERROR, 569 "PREP_CMD: device in suspended state\n"); 570 return -1; 571 } 572 573 if (adapter->hs_enabling && cmd_no != HostCmd_CMD_802_11_HS_CFG_ENH) { 574 mwifiex_dbg(adapter, ERROR, 575 "PREP_CMD: host entering sleep state\n"); 576 return -1; 577 } 578 579 if (adapter->surprise_removed) { 580 mwifiex_dbg(adapter, ERROR, 581 "PREP_CMD: card is removed\n"); 582 return -1; 583 } 584 585 if (adapter->is_cmd_timedout) { 586 mwifiex_dbg(adapter, ERROR, 587 "PREP_CMD: FW is in bad state\n"); 588 return -1; 589 } 590 591 if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET) { 592 if (cmd_no != HostCmd_CMD_FUNC_INIT) { 593 mwifiex_dbg(adapter, ERROR, 594 "PREP_CMD: FW in reset state\n"); 595 return -1; 596 } 597 } 598 /* We don't expect commands in manufacturing mode. They are cooked 599 * in application and ready to download buffer is passed to the driver 600 */ 601 if (adapter->mfg_mode && cmd_no) { 602 dev_dbg(adapter->dev, "Ignoring commands in manufacturing mode\n"); 603 return -1; 604 } 605 606 607 /* Get a new command node */ 608 cmd_node = mwifiex_get_cmd_node(adapter); 609 610 if (!cmd_node) { 611 mwifiex_dbg(adapter, ERROR, 612 "PREP_CMD: no free cmd node\n"); 613 return -1; 614 } 615 616 /* Initialize the command node */ 617 mwifiex_init_cmd_node(priv, cmd_node, cmd_oid, data_buf, sync); 618 619 if (!cmd_node->cmd_skb) { 620 mwifiex_dbg(adapter, ERROR, 621 "PREP_CMD: no free cmd buf\n"); 622 return -1; 623 } 624 625 skb_put_zero(cmd_node->cmd_skb, sizeof(struct host_cmd_ds_command)); 626 627 cmd_ptr = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data); 628 cmd_ptr->command = cpu_to_le16(cmd_no); 629 cmd_ptr->result = 0; 630 631 /* Prepare command */ 632 if (cmd_no) { 633 switch (cmd_no) { 634 case HostCmd_CMD_UAP_SYS_CONFIG: 635 case HostCmd_CMD_UAP_BSS_START: 636 case HostCmd_CMD_UAP_BSS_STOP: 637 case HostCmd_CMD_UAP_STA_DEAUTH: 638 case HOST_CMD_APCMD_SYS_RESET: 639 case HOST_CMD_APCMD_STA_LIST: 640 ret = mwifiex_uap_prepare_cmd(priv, cmd_no, cmd_action, 641 cmd_oid, data_buf, 642 cmd_ptr); 643 break; 644 default: 645 ret = mwifiex_sta_prepare_cmd(priv, cmd_no, cmd_action, 646 cmd_oid, data_buf, 647 cmd_ptr); 648 break; 649 } 650 } else { 651 ret = mwifiex_cmd_host_cmd(priv, cmd_ptr, data_buf); 652 cmd_node->cmd_flag |= CMD_F_HOSTCMD; 653 } 654 655 /* Return error, since the command preparation failed */ 656 if (ret) { 657 mwifiex_dbg(adapter, ERROR, 658 "PREP_CMD: cmd %#x preparation failed\n", 659 cmd_no); 660 mwifiex_insert_cmd_to_free_q(adapter, cmd_node); 661 return -1; 662 } 663 664 /* Send command */ 665 if (cmd_no == HostCmd_CMD_802_11_SCAN || 666 cmd_no == HostCmd_CMD_802_11_SCAN_EXT) { 667 mwifiex_queue_scan_cmd(priv, cmd_node); 668 } else { 669 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true); 670 queue_work(adapter->workqueue, &adapter->main_work); 671 if (cmd_node->wait_q_enabled) 672 ret = mwifiex_wait_queue_complete(adapter, cmd_node); 673 } 674 675 return ret; 676 } 677 678 /* 679 * This function queues a command to the command pending queue. 680 * 681 * This in effect adds the command to the command list to be executed. 682 * Exit PS command is handled specially, by placing it always to the 683 * front of the command queue. 684 */ 685 void 686 mwifiex_insert_cmd_to_pending_q(struct mwifiex_adapter *adapter, 687 struct cmd_ctrl_node *cmd_node, u32 add_tail) 688 { 689 struct host_cmd_ds_command *host_cmd = NULL; 690 u16 command; 691 unsigned long flags; 692 693 host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data); 694 if (!host_cmd) { 695 mwifiex_dbg(adapter, ERROR, "QUEUE_CMD: host_cmd is NULL\n"); 696 return; 697 } 698 699 command = le16_to_cpu(host_cmd->command); 700 701 /* Exit_PS command needs to be queued in the header always. */ 702 if (command == HostCmd_CMD_802_11_PS_MODE_ENH) { 703 struct host_cmd_ds_802_11_ps_mode_enh *pm = 704 &host_cmd->params.psmode_enh; 705 if ((le16_to_cpu(pm->action) == DIS_PS) || 706 (le16_to_cpu(pm->action) == DIS_AUTO_PS)) { 707 if (adapter->ps_state != PS_STATE_AWAKE) 708 add_tail = false; 709 } 710 } 711 712 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 713 if (add_tail) 714 list_add_tail(&cmd_node->list, &adapter->cmd_pending_q); 715 else 716 list_add(&cmd_node->list, &adapter->cmd_pending_q); 717 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 718 719 atomic_inc(&adapter->cmd_pending); 720 mwifiex_dbg(adapter, CMD, 721 "cmd: QUEUE_CMD: cmd=%#x, cmd_pending=%d\n", 722 command, atomic_read(&adapter->cmd_pending)); 723 } 724 725 /* 726 * This function executes the next command in command pending queue. 727 * 728 * This function will fail if a command is already in processing stage, 729 * otherwise it will dequeue the first command from the command pending 730 * queue and send to the firmware. 731 * 732 * If the device is currently in host sleep mode, any commands, except the 733 * host sleep configuration command will de-activate the host sleep. For PS 734 * mode, the function will put the firmware back to sleep if applicable. 735 */ 736 int mwifiex_exec_next_cmd(struct mwifiex_adapter *adapter) 737 { 738 struct mwifiex_private *priv; 739 struct cmd_ctrl_node *cmd_node; 740 int ret = 0; 741 struct host_cmd_ds_command *host_cmd; 742 unsigned long cmd_flags; 743 unsigned long cmd_pending_q_flags; 744 745 /* Check if already in processing */ 746 if (adapter->curr_cmd) { 747 mwifiex_dbg(adapter, FATAL, 748 "EXEC_NEXT_CMD: cmd in processing\n"); 749 return -1; 750 } 751 752 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags); 753 /* Check if any command is pending */ 754 spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags); 755 if (list_empty(&adapter->cmd_pending_q)) { 756 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, 757 cmd_pending_q_flags); 758 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags); 759 return 0; 760 } 761 cmd_node = list_first_entry(&adapter->cmd_pending_q, 762 struct cmd_ctrl_node, list); 763 764 host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data); 765 priv = cmd_node->priv; 766 767 if (adapter->ps_state != PS_STATE_AWAKE) { 768 mwifiex_dbg(adapter, ERROR, 769 "%s: cannot send cmd in sleep state,\t" 770 "this should not happen\n", __func__); 771 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, 772 cmd_pending_q_flags); 773 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags); 774 return ret; 775 } 776 777 list_del(&cmd_node->list); 778 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, 779 cmd_pending_q_flags); 780 781 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags); 782 ret = mwifiex_dnld_cmd_to_fw(priv, cmd_node); 783 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 784 /* Any command sent to the firmware when host is in sleep 785 * mode should de-configure host sleep. We should skip the 786 * host sleep configuration command itself though 787 */ 788 if (priv && (host_cmd->command != 789 cpu_to_le16(HostCmd_CMD_802_11_HS_CFG_ENH))) { 790 if (adapter->hs_activated) { 791 adapter->is_hs_configured = false; 792 mwifiex_hs_activated_event(priv, false); 793 } 794 } 795 796 return ret; 797 } 798 799 /* 800 * This function handles the command response. 801 * 802 * After processing, the function cleans the command node and puts 803 * it back to the command free queue. 804 */ 805 int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter) 806 { 807 struct host_cmd_ds_command *resp; 808 struct mwifiex_private *priv = 809 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 810 int ret = 0; 811 uint16_t orig_cmdresp_no; 812 uint16_t cmdresp_no; 813 uint16_t cmdresp_result; 814 unsigned long flags; 815 816 /* Now we got response from FW, cancel the command timer */ 817 del_timer_sync(&adapter->cmd_timer); 818 819 if (!adapter->curr_cmd || !adapter->curr_cmd->resp_skb) { 820 resp = (struct host_cmd_ds_command *) adapter->upld_buf; 821 mwifiex_dbg(adapter, ERROR, 822 "CMD_RESP: NULL curr_cmd, %#x\n", 823 le16_to_cpu(resp->command)); 824 return -1; 825 } 826 827 adapter->is_cmd_timedout = 0; 828 829 resp = (struct host_cmd_ds_command *) adapter->curr_cmd->resp_skb->data; 830 if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) { 831 /* Copy original response back to response buffer */ 832 struct mwifiex_ds_misc_cmd *hostcmd; 833 uint16_t size = le16_to_cpu(resp->size); 834 mwifiex_dbg(adapter, INFO, 835 "info: host cmd resp size = %d\n", size); 836 size = min_t(u16, size, MWIFIEX_SIZE_OF_CMD_BUFFER); 837 if (adapter->curr_cmd->data_buf) { 838 hostcmd = adapter->curr_cmd->data_buf; 839 hostcmd->len = size; 840 memcpy(hostcmd->cmd, resp, size); 841 } 842 } 843 orig_cmdresp_no = le16_to_cpu(resp->command); 844 845 /* Get BSS number and corresponding priv */ 846 priv = mwifiex_get_priv_by_id(adapter, 847 HostCmd_GET_BSS_NO(le16_to_cpu(resp->seq_num)), 848 HostCmd_GET_BSS_TYPE(le16_to_cpu(resp->seq_num))); 849 if (!priv) 850 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 851 /* Clear RET_BIT from HostCmd */ 852 resp->command = cpu_to_le16(orig_cmdresp_no & HostCmd_CMD_ID_MASK); 853 854 cmdresp_no = le16_to_cpu(resp->command); 855 cmdresp_result = le16_to_cpu(resp->result); 856 857 /* Save the last command response to debug log */ 858 adapter->dbg.last_cmd_resp_index = 859 (adapter->dbg.last_cmd_resp_index + 1) % DBG_CMD_NUM; 860 adapter->dbg.last_cmd_resp_id[adapter->dbg.last_cmd_resp_index] = 861 orig_cmdresp_no; 862 863 mwifiex_dbg(adapter, CMD, 864 "cmd: CMD_RESP: 0x%x, result %d, len %d, seqno 0x%x\n", 865 orig_cmdresp_no, cmdresp_result, 866 le16_to_cpu(resp->size), le16_to_cpu(resp->seq_num)); 867 mwifiex_dbg_dump(adapter, CMD_D, "CMD_RESP buffer:", resp, 868 le16_to_cpu(resp->size)); 869 870 if (!(orig_cmdresp_no & HostCmd_RET_BIT)) { 871 mwifiex_dbg(adapter, ERROR, "CMD_RESP: invalid cmd resp\n"); 872 if (adapter->curr_cmd->wait_q_enabled) 873 adapter->cmd_wait_q.status = -1; 874 875 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 876 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); 877 adapter->curr_cmd = NULL; 878 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); 879 return -1; 880 } 881 882 if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) { 883 adapter->curr_cmd->cmd_flag &= ~CMD_F_HOSTCMD; 884 if ((cmdresp_result == HostCmd_RESULT_OK) && 885 (cmdresp_no == HostCmd_CMD_802_11_HS_CFG_ENH)) 886 ret = mwifiex_ret_802_11_hs_cfg(priv, resp); 887 } else { 888 /* handle response */ 889 ret = mwifiex_process_sta_cmdresp(priv, cmdresp_no, resp); 890 } 891 892 /* Check init command response */ 893 if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) { 894 if (ret) { 895 mwifiex_dbg(adapter, ERROR, 896 "%s: cmd %#x failed during\t" 897 "initialization\n", __func__, cmdresp_no); 898 mwifiex_init_fw_complete(adapter); 899 return -1; 900 } else if (adapter->last_init_cmd == cmdresp_no) 901 adapter->hw_status = MWIFIEX_HW_STATUS_INIT_DONE; 902 } 903 904 if (adapter->curr_cmd) { 905 if (adapter->curr_cmd->wait_q_enabled) 906 adapter->cmd_wait_q.status = ret; 907 908 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 909 910 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); 911 adapter->curr_cmd = NULL; 912 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); 913 } 914 915 return ret; 916 } 917 918 /* 919 * This function handles the timeout of command sending. 920 * 921 * It will re-send the same command again. 922 */ 923 void 924 mwifiex_cmd_timeout_func(unsigned long function_context) 925 { 926 struct mwifiex_adapter *adapter = 927 (struct mwifiex_adapter *) function_context; 928 struct cmd_ctrl_node *cmd_node; 929 930 adapter->is_cmd_timedout = 1; 931 if (!adapter->curr_cmd) { 932 mwifiex_dbg(adapter, ERROR, 933 "cmd: empty curr_cmd\n"); 934 return; 935 } 936 cmd_node = adapter->curr_cmd; 937 if (cmd_node) { 938 adapter->dbg.timeout_cmd_id = 939 adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index]; 940 adapter->dbg.timeout_cmd_act = 941 adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index]; 942 mwifiex_dbg(adapter, MSG, 943 "%s: Timeout cmd id = %#x, act = %#x\n", __func__, 944 adapter->dbg.timeout_cmd_id, 945 adapter->dbg.timeout_cmd_act); 946 947 mwifiex_dbg(adapter, MSG, 948 "num_data_h2c_failure = %d\n", 949 adapter->dbg.num_tx_host_to_card_failure); 950 mwifiex_dbg(adapter, MSG, 951 "num_cmd_h2c_failure = %d\n", 952 adapter->dbg.num_cmd_host_to_card_failure); 953 954 mwifiex_dbg(adapter, MSG, 955 "is_cmd_timedout = %d\n", 956 adapter->is_cmd_timedout); 957 mwifiex_dbg(adapter, MSG, 958 "num_tx_timeout = %d\n", 959 adapter->dbg.num_tx_timeout); 960 961 mwifiex_dbg(adapter, MSG, 962 "last_cmd_index = %d\n", 963 adapter->dbg.last_cmd_index); 964 mwifiex_dbg(adapter, MSG, 965 "last_cmd_id: %*ph\n", 966 (int)sizeof(adapter->dbg.last_cmd_id), 967 adapter->dbg.last_cmd_id); 968 mwifiex_dbg(adapter, MSG, 969 "last_cmd_act: %*ph\n", 970 (int)sizeof(adapter->dbg.last_cmd_act), 971 adapter->dbg.last_cmd_act); 972 973 mwifiex_dbg(adapter, MSG, 974 "last_cmd_resp_index = %d\n", 975 adapter->dbg.last_cmd_resp_index); 976 mwifiex_dbg(adapter, MSG, 977 "last_cmd_resp_id: %*ph\n", 978 (int)sizeof(adapter->dbg.last_cmd_resp_id), 979 adapter->dbg.last_cmd_resp_id); 980 981 mwifiex_dbg(adapter, MSG, 982 "last_event_index = %d\n", 983 adapter->dbg.last_event_index); 984 mwifiex_dbg(adapter, MSG, 985 "last_event: %*ph\n", 986 (int)sizeof(adapter->dbg.last_event), 987 adapter->dbg.last_event); 988 989 mwifiex_dbg(adapter, MSG, 990 "data_sent=%d cmd_sent=%d\n", 991 adapter->data_sent, adapter->cmd_sent); 992 993 mwifiex_dbg(adapter, MSG, 994 "ps_mode=%d ps_state=%d\n", 995 adapter->ps_mode, adapter->ps_state); 996 997 if (cmd_node->wait_q_enabled) { 998 adapter->cmd_wait_q.status = -ETIMEDOUT; 999 mwifiex_cancel_pending_ioctl(adapter); 1000 } 1001 } 1002 if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) { 1003 mwifiex_init_fw_complete(adapter); 1004 return; 1005 } 1006 1007 if (adapter->if_ops.device_dump) 1008 adapter->if_ops.device_dump(adapter); 1009 1010 if (adapter->if_ops.card_reset) 1011 adapter->if_ops.card_reset(adapter); 1012 } 1013 1014 void 1015 mwifiex_cancel_pending_scan_cmd(struct mwifiex_adapter *adapter) 1016 { 1017 struct cmd_ctrl_node *cmd_node = NULL, *tmp_node; 1018 unsigned long flags; 1019 1020 /* Cancel all pending scan command */ 1021 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); 1022 list_for_each_entry_safe(cmd_node, tmp_node, 1023 &adapter->scan_pending_q, list) { 1024 list_del(&cmd_node->list); 1025 cmd_node->wait_q_enabled = false; 1026 mwifiex_insert_cmd_to_free_q(adapter, cmd_node); 1027 } 1028 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); 1029 } 1030 1031 /* 1032 * This function cancels all the pending commands. 1033 * 1034 * The current command, all commands in command pending queue and all scan 1035 * commands in scan pending queue are cancelled. All the completion callbacks 1036 * are called with failure status to ensure cleanup. 1037 */ 1038 void 1039 mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter) 1040 { 1041 struct cmd_ctrl_node *cmd_node = NULL, *tmp_node; 1042 unsigned long flags, cmd_flags; 1043 1044 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags); 1045 /* Cancel current cmd */ 1046 if ((adapter->curr_cmd) && (adapter->curr_cmd->wait_q_enabled)) { 1047 adapter->cmd_wait_q.status = -1; 1048 mwifiex_complete_cmd(adapter, adapter->curr_cmd); 1049 adapter->curr_cmd->wait_q_enabled = false; 1050 /* no recycle probably wait for response */ 1051 } 1052 /* Cancel all pending command */ 1053 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 1054 list_for_each_entry_safe(cmd_node, tmp_node, 1055 &adapter->cmd_pending_q, list) { 1056 list_del(&cmd_node->list); 1057 1058 if (cmd_node->wait_q_enabled) 1059 adapter->cmd_wait_q.status = -1; 1060 mwifiex_recycle_cmd_node(adapter, cmd_node); 1061 } 1062 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 1063 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags); 1064 1065 mwifiex_cancel_scan(adapter); 1066 } 1067 1068 /* 1069 * This function cancels all pending commands that matches with 1070 * the given IOCTL request. 1071 * 1072 * Both the current command buffer and the pending command queue are 1073 * searched for matching IOCTL request. The completion callback of 1074 * the matched command is called with failure status to ensure cleanup. 1075 * In case of scan commands, all pending commands in scan pending queue 1076 * are cancelled. 1077 */ 1078 void 1079 mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter) 1080 { 1081 struct cmd_ctrl_node *cmd_node = NULL; 1082 unsigned long cmd_flags; 1083 1084 if ((adapter->curr_cmd) && 1085 (adapter->curr_cmd->wait_q_enabled)) { 1086 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags); 1087 cmd_node = adapter->curr_cmd; 1088 /* setting curr_cmd to NULL is quite dangerous, because 1089 * mwifiex_process_cmdresp checks curr_cmd to be != NULL 1090 * at the beginning then relies on it and dereferences 1091 * it at will 1092 * this probably works since mwifiex_cmd_timeout_func 1093 * is the only caller of this function and responses 1094 * at that point 1095 */ 1096 adapter->curr_cmd = NULL; 1097 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags); 1098 1099 mwifiex_recycle_cmd_node(adapter, cmd_node); 1100 } 1101 1102 mwifiex_cancel_scan(adapter); 1103 } 1104 1105 /* 1106 * This function sends the sleep confirm command to firmware, if 1107 * possible. 1108 * 1109 * The sleep confirm command cannot be issued if command response, 1110 * data response or event response is awaiting handling, or if we 1111 * are in the middle of sending a command, or expecting a command 1112 * response. 1113 */ 1114 void 1115 mwifiex_check_ps_cond(struct mwifiex_adapter *adapter) 1116 { 1117 if (!adapter->cmd_sent && !atomic_read(&adapter->tx_hw_pending) && 1118 !adapter->curr_cmd && !IS_CARD_RX_RCVD(adapter)) 1119 mwifiex_dnld_sleep_confirm_cmd(adapter); 1120 else 1121 mwifiex_dbg(adapter, CMD, 1122 "cmd: Delay Sleep Confirm (%s%s%s%s)\n", 1123 (adapter->cmd_sent) ? "D" : "", 1124 atomic_read(&adapter->tx_hw_pending) ? "T" : "", 1125 (adapter->curr_cmd) ? "C" : "", 1126 (IS_CARD_RX_RCVD(adapter)) ? "R" : ""); 1127 } 1128 1129 /* 1130 * This function sends a Host Sleep activated event to applications. 1131 * 1132 * This event is generated by the driver, with a blank event body. 1133 */ 1134 void 1135 mwifiex_hs_activated_event(struct mwifiex_private *priv, u8 activated) 1136 { 1137 if (activated) { 1138 if (priv->adapter->is_hs_configured) { 1139 priv->adapter->hs_activated = true; 1140 mwifiex_update_rxreor_flags(priv->adapter, 1141 RXREOR_FORCE_NO_DROP); 1142 mwifiex_dbg(priv->adapter, EVENT, 1143 "event: hs_activated\n"); 1144 priv->adapter->hs_activate_wait_q_woken = true; 1145 wake_up_interruptible( 1146 &priv->adapter->hs_activate_wait_q); 1147 } else { 1148 mwifiex_dbg(priv->adapter, EVENT, 1149 "event: HS not configured\n"); 1150 } 1151 } else { 1152 mwifiex_dbg(priv->adapter, EVENT, 1153 "event: hs_deactivated\n"); 1154 priv->adapter->hs_activated = false; 1155 } 1156 } 1157 1158 /* 1159 * This function handles the command response of a Host Sleep configuration 1160 * command. 1161 * 1162 * Handling includes changing the header fields into CPU format 1163 * and setting the current host sleep activation status in driver. 1164 * 1165 * In case host sleep status change, the function generates an event to 1166 * notify the applications. 1167 */ 1168 int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv, 1169 struct host_cmd_ds_command *resp) 1170 { 1171 struct mwifiex_adapter *adapter = priv->adapter; 1172 struct host_cmd_ds_802_11_hs_cfg_enh *phs_cfg = 1173 &resp->params.opt_hs_cfg; 1174 uint32_t conditions = le32_to_cpu(phs_cfg->params.hs_config.conditions); 1175 1176 if (phs_cfg->action == cpu_to_le16(HS_ACTIVATE) && 1177 adapter->iface_type != MWIFIEX_USB) { 1178 mwifiex_hs_activated_event(priv, true); 1179 return 0; 1180 } else { 1181 mwifiex_dbg(adapter, CMD, 1182 "cmd: CMD_RESP: HS_CFG cmd reply\t" 1183 " result=%#x, conditions=0x%x gpio=0x%x gap=0x%x\n", 1184 resp->result, conditions, 1185 phs_cfg->params.hs_config.gpio, 1186 phs_cfg->params.hs_config.gap); 1187 } 1188 if (conditions != HS_CFG_CANCEL) { 1189 adapter->is_hs_configured = true; 1190 if (adapter->iface_type == MWIFIEX_USB) 1191 mwifiex_hs_activated_event(priv, true); 1192 } else { 1193 adapter->is_hs_configured = false; 1194 if (adapter->hs_activated) 1195 mwifiex_hs_activated_event(priv, false); 1196 } 1197 1198 return 0; 1199 } 1200 1201 /* 1202 * This function wakes up the adapter and generates a Host Sleep 1203 * cancel event on receiving the power up interrupt. 1204 */ 1205 void 1206 mwifiex_process_hs_config(struct mwifiex_adapter *adapter) 1207 { 1208 mwifiex_dbg(adapter, INFO, 1209 "info: %s: auto cancelling host sleep\t" 1210 "since there is interrupt from the firmware\n", 1211 __func__); 1212 1213 adapter->if_ops.wakeup(adapter); 1214 adapter->hs_activated = false; 1215 adapter->is_hs_configured = false; 1216 adapter->is_suspended = false; 1217 mwifiex_hs_activated_event(mwifiex_get_priv(adapter, 1218 MWIFIEX_BSS_ROLE_ANY), 1219 false); 1220 } 1221 EXPORT_SYMBOL_GPL(mwifiex_process_hs_config); 1222 1223 /* 1224 * This function handles the command response of a sleep confirm command. 1225 * 1226 * The function sets the card state to SLEEP if the response indicates success. 1227 */ 1228 void 1229 mwifiex_process_sleep_confirm_resp(struct mwifiex_adapter *adapter, 1230 u8 *pbuf, u32 upld_len) 1231 { 1232 struct host_cmd_ds_command *cmd = (struct host_cmd_ds_command *) pbuf; 1233 struct mwifiex_private *priv = 1234 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 1235 uint16_t result = le16_to_cpu(cmd->result); 1236 uint16_t command = le16_to_cpu(cmd->command); 1237 uint16_t seq_num = le16_to_cpu(cmd->seq_num); 1238 1239 if (!upld_len) { 1240 mwifiex_dbg(adapter, ERROR, 1241 "%s: cmd size is 0\n", __func__); 1242 return; 1243 } 1244 1245 mwifiex_dbg(adapter, CMD, 1246 "cmd: CMD_RESP: 0x%x, result %d, len %d, seqno 0x%x\n", 1247 command, result, le16_to_cpu(cmd->size), seq_num); 1248 1249 /* Get BSS number and corresponding priv */ 1250 priv = mwifiex_get_priv_by_id(adapter, HostCmd_GET_BSS_NO(seq_num), 1251 HostCmd_GET_BSS_TYPE(seq_num)); 1252 if (!priv) 1253 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 1254 1255 /* Update sequence number */ 1256 seq_num = HostCmd_GET_SEQ_NO(seq_num); 1257 /* Clear RET_BIT from HostCmd */ 1258 command &= HostCmd_CMD_ID_MASK; 1259 1260 if (command != HostCmd_CMD_802_11_PS_MODE_ENH) { 1261 mwifiex_dbg(adapter, ERROR, 1262 "%s: rcvd unexpected resp for cmd %#x, result = %x\n", 1263 __func__, command, result); 1264 return; 1265 } 1266 1267 if (result) { 1268 mwifiex_dbg(adapter, ERROR, 1269 "%s: sleep confirm cmd failed\n", 1270 __func__); 1271 adapter->pm_wakeup_card_req = false; 1272 adapter->ps_state = PS_STATE_AWAKE; 1273 return; 1274 } 1275 adapter->pm_wakeup_card_req = true; 1276 if (adapter->is_hs_configured) 1277 mwifiex_hs_activated_event(mwifiex_get_priv 1278 (adapter, MWIFIEX_BSS_ROLE_ANY), 1279 true); 1280 adapter->ps_state = PS_STATE_SLEEP; 1281 cmd->command = cpu_to_le16(command); 1282 cmd->seq_num = cpu_to_le16(seq_num); 1283 } 1284 EXPORT_SYMBOL_GPL(mwifiex_process_sleep_confirm_resp); 1285 1286 /* 1287 * This function prepares an enhanced power mode command. 1288 * 1289 * This function can be used to disable power save or to configure 1290 * power save with auto PS or STA PS or auto deep sleep. 1291 * 1292 * Preparation includes - 1293 * - Setting command ID, action and proper size 1294 * - Setting Power Save bitmap, PS parameters TLV, PS mode TLV, 1295 * auto deep sleep TLV (as required) 1296 * - Ensuring correct endian-ness 1297 */ 1298 int mwifiex_cmd_enh_power_mode(struct mwifiex_private *priv, 1299 struct host_cmd_ds_command *cmd, 1300 u16 cmd_action, uint16_t ps_bitmap, 1301 struct mwifiex_ds_auto_ds *auto_ds) 1302 { 1303 struct host_cmd_ds_802_11_ps_mode_enh *psmode_enh = 1304 &cmd->params.psmode_enh; 1305 u8 *tlv; 1306 u16 cmd_size = 0; 1307 1308 cmd->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 1309 if (cmd_action == DIS_AUTO_PS) { 1310 psmode_enh->action = cpu_to_le16(DIS_AUTO_PS); 1311 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap); 1312 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) + 1313 sizeof(psmode_enh->params.ps_bitmap)); 1314 } else if (cmd_action == GET_PS) { 1315 psmode_enh->action = cpu_to_le16(GET_PS); 1316 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap); 1317 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) + 1318 sizeof(psmode_enh->params.ps_bitmap)); 1319 } else if (cmd_action == EN_AUTO_PS) { 1320 psmode_enh->action = cpu_to_le16(EN_AUTO_PS); 1321 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap); 1322 cmd_size = S_DS_GEN + sizeof(psmode_enh->action) + 1323 sizeof(psmode_enh->params.ps_bitmap); 1324 tlv = (u8 *) cmd + cmd_size; 1325 if (ps_bitmap & BITMAP_STA_PS) { 1326 struct mwifiex_adapter *adapter = priv->adapter; 1327 struct mwifiex_ie_types_ps_param *ps_tlv = 1328 (struct mwifiex_ie_types_ps_param *) tlv; 1329 struct mwifiex_ps_param *ps_mode = &ps_tlv->param; 1330 ps_tlv->header.type = cpu_to_le16(TLV_TYPE_PS_PARAM); 1331 ps_tlv->header.len = cpu_to_le16(sizeof(*ps_tlv) - 1332 sizeof(struct mwifiex_ie_types_header)); 1333 cmd_size += sizeof(*ps_tlv); 1334 tlv += sizeof(*ps_tlv); 1335 mwifiex_dbg(priv->adapter, CMD, 1336 "cmd: PS Command: Enter PS\n"); 1337 ps_mode->null_pkt_interval = 1338 cpu_to_le16(adapter->null_pkt_interval); 1339 ps_mode->multiple_dtims = 1340 cpu_to_le16(adapter->multiple_dtim); 1341 ps_mode->bcn_miss_timeout = 1342 cpu_to_le16(adapter->bcn_miss_time_out); 1343 ps_mode->local_listen_interval = 1344 cpu_to_le16(adapter->local_listen_interval); 1345 ps_mode->adhoc_wake_period = 1346 cpu_to_le16(adapter->adhoc_awake_period); 1347 ps_mode->delay_to_ps = 1348 cpu_to_le16(adapter->delay_to_ps); 1349 ps_mode->mode = cpu_to_le16(adapter->enhanced_ps_mode); 1350 1351 } 1352 if (ps_bitmap & BITMAP_AUTO_DS) { 1353 struct mwifiex_ie_types_auto_ds_param *auto_ds_tlv = 1354 (struct mwifiex_ie_types_auto_ds_param *) tlv; 1355 u16 idletime = 0; 1356 1357 auto_ds_tlv->header.type = 1358 cpu_to_le16(TLV_TYPE_AUTO_DS_PARAM); 1359 auto_ds_tlv->header.len = 1360 cpu_to_le16(sizeof(*auto_ds_tlv) - 1361 sizeof(struct mwifiex_ie_types_header)); 1362 cmd_size += sizeof(*auto_ds_tlv); 1363 tlv += sizeof(*auto_ds_tlv); 1364 if (auto_ds) 1365 idletime = auto_ds->idle_time; 1366 mwifiex_dbg(priv->adapter, CMD, 1367 "cmd: PS Command: Enter Auto Deep Sleep\n"); 1368 auto_ds_tlv->deep_sleep_timeout = cpu_to_le16(idletime); 1369 } 1370 cmd->size = cpu_to_le16(cmd_size); 1371 } 1372 return 0; 1373 } 1374 1375 /* 1376 * This function handles the command response of an enhanced power mode 1377 * command. 1378 * 1379 * Handling includes changing the header fields into CPU format 1380 * and setting the current enhanced power mode in driver. 1381 */ 1382 int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv, 1383 struct host_cmd_ds_command *resp, 1384 struct mwifiex_ds_pm_cfg *pm_cfg) 1385 { 1386 struct mwifiex_adapter *adapter = priv->adapter; 1387 struct host_cmd_ds_802_11_ps_mode_enh *ps_mode = 1388 &resp->params.psmode_enh; 1389 uint16_t action = le16_to_cpu(ps_mode->action); 1390 uint16_t ps_bitmap = le16_to_cpu(ps_mode->params.ps_bitmap); 1391 uint16_t auto_ps_bitmap = 1392 le16_to_cpu(ps_mode->params.ps_bitmap); 1393 1394 mwifiex_dbg(adapter, INFO, 1395 "info: %s: PS_MODE cmd reply result=%#x action=%#X\n", 1396 __func__, resp->result, action); 1397 if (action == EN_AUTO_PS) { 1398 if (auto_ps_bitmap & BITMAP_AUTO_DS) { 1399 mwifiex_dbg(adapter, CMD, 1400 "cmd: Enabled auto deep sleep\n"); 1401 priv->adapter->is_deep_sleep = true; 1402 } 1403 if (auto_ps_bitmap & BITMAP_STA_PS) { 1404 mwifiex_dbg(adapter, CMD, 1405 "cmd: Enabled STA power save\n"); 1406 if (adapter->sleep_period.period) 1407 mwifiex_dbg(adapter, CMD, 1408 "cmd: set to uapsd/pps mode\n"); 1409 } 1410 } else if (action == DIS_AUTO_PS) { 1411 if (ps_bitmap & BITMAP_AUTO_DS) { 1412 priv->adapter->is_deep_sleep = false; 1413 mwifiex_dbg(adapter, CMD, 1414 "cmd: Disabled auto deep sleep\n"); 1415 } 1416 if (ps_bitmap & BITMAP_STA_PS) { 1417 mwifiex_dbg(adapter, CMD, 1418 "cmd: Disabled STA power save\n"); 1419 if (adapter->sleep_period.period) { 1420 adapter->delay_null_pkt = false; 1421 adapter->tx_lock_flag = false; 1422 adapter->pps_uapsd_mode = false; 1423 } 1424 } 1425 } else if (action == GET_PS) { 1426 if (ps_bitmap & BITMAP_STA_PS) 1427 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP; 1428 else 1429 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 1430 1431 mwifiex_dbg(adapter, CMD, 1432 "cmd: ps_bitmap=%#x\n", ps_bitmap); 1433 1434 if (pm_cfg) { 1435 /* This section is for get power save mode */ 1436 if (ps_bitmap & BITMAP_STA_PS) 1437 pm_cfg->param.ps_mode = 1; 1438 else 1439 pm_cfg->param.ps_mode = 0; 1440 } 1441 } 1442 return 0; 1443 } 1444 1445 /* 1446 * This function prepares command to get hardware specifications. 1447 * 1448 * Preparation includes - 1449 * - Setting command ID, action and proper size 1450 * - Setting permanent address parameter 1451 * - Ensuring correct endian-ness 1452 */ 1453 int mwifiex_cmd_get_hw_spec(struct mwifiex_private *priv, 1454 struct host_cmd_ds_command *cmd) 1455 { 1456 struct host_cmd_ds_get_hw_spec *hw_spec = &cmd->params.hw_spec; 1457 1458 cmd->command = cpu_to_le16(HostCmd_CMD_GET_HW_SPEC); 1459 cmd->size = 1460 cpu_to_le16(sizeof(struct host_cmd_ds_get_hw_spec) + S_DS_GEN); 1461 memcpy(hw_spec->permanent_addr, priv->curr_addr, ETH_ALEN); 1462 1463 return 0; 1464 } 1465 1466 /* 1467 * This function handles the command response of get hardware 1468 * specifications. 1469 * 1470 * Handling includes changing the header fields into CPU format 1471 * and saving/updating the following parameters in driver - 1472 * - Firmware capability information 1473 * - Firmware band settings 1474 * - Ad-hoc start band and channel 1475 * - Ad-hoc 11n activation status 1476 * - Firmware release number 1477 * - Number of antennas 1478 * - Hardware address 1479 * - Hardware interface version 1480 * - Firmware version 1481 * - Region code 1482 * - 11n capabilities 1483 * - MCS support fields 1484 * - MP end port 1485 */ 1486 int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv, 1487 struct host_cmd_ds_command *resp) 1488 { 1489 struct host_cmd_ds_get_hw_spec *hw_spec = &resp->params.hw_spec; 1490 struct mwifiex_adapter *adapter = priv->adapter; 1491 struct mwifiex_ie_types_header *tlv; 1492 struct hw_spec_api_rev *api_rev; 1493 u16 resp_size, api_id; 1494 int i, left_len, parsed_len = 0; 1495 1496 adapter->fw_cap_info = le32_to_cpu(hw_spec->fw_cap_info); 1497 1498 if (IS_SUPPORT_MULTI_BANDS(adapter)) 1499 adapter->fw_bands = (u8) GET_FW_DEFAULT_BANDS(adapter); 1500 else 1501 adapter->fw_bands = BAND_B; 1502 1503 adapter->config_bands = adapter->fw_bands; 1504 1505 if (adapter->fw_bands & BAND_A) { 1506 if (adapter->fw_bands & BAND_GN) { 1507 adapter->config_bands |= BAND_AN; 1508 adapter->fw_bands |= BAND_AN; 1509 } 1510 if (adapter->fw_bands & BAND_AN) { 1511 adapter->adhoc_start_band = BAND_A | BAND_AN; 1512 adapter->adhoc_11n_enabled = true; 1513 } else { 1514 adapter->adhoc_start_band = BAND_A; 1515 } 1516 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL_A; 1517 } else if (adapter->fw_bands & BAND_GN) { 1518 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN; 1519 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 1520 adapter->adhoc_11n_enabled = true; 1521 } else if (adapter->fw_bands & BAND_G) { 1522 adapter->adhoc_start_band = BAND_G | BAND_B; 1523 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 1524 } else if (adapter->fw_bands & BAND_B) { 1525 adapter->adhoc_start_band = BAND_B; 1526 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 1527 } 1528 1529 adapter->fw_release_number = le32_to_cpu(hw_spec->fw_release_number); 1530 adapter->fw_api_ver = (adapter->fw_release_number >> 16) & 0xff; 1531 adapter->number_of_antenna = le16_to_cpu(hw_spec->number_of_antenna); 1532 1533 if (le32_to_cpu(hw_spec->dot_11ac_dev_cap)) { 1534 adapter->is_hw_11ac_capable = true; 1535 1536 /* Copy 11AC cap */ 1537 adapter->hw_dot_11ac_dev_cap = 1538 le32_to_cpu(hw_spec->dot_11ac_dev_cap); 1539 adapter->usr_dot_11ac_dev_cap_bg = adapter->hw_dot_11ac_dev_cap 1540 & ~MWIFIEX_DEF_11AC_CAP_BF_RESET_MASK; 1541 adapter->usr_dot_11ac_dev_cap_a = adapter->hw_dot_11ac_dev_cap 1542 & ~MWIFIEX_DEF_11AC_CAP_BF_RESET_MASK; 1543 1544 /* Copy 11AC mcs */ 1545 adapter->hw_dot_11ac_mcs_support = 1546 le32_to_cpu(hw_spec->dot_11ac_mcs_support); 1547 adapter->usr_dot_11ac_mcs_support = 1548 adapter->hw_dot_11ac_mcs_support; 1549 } else { 1550 adapter->is_hw_11ac_capable = false; 1551 } 1552 1553 resp_size = le16_to_cpu(resp->size) - S_DS_GEN; 1554 if (resp_size > sizeof(struct host_cmd_ds_get_hw_spec)) { 1555 /* we have variable HW SPEC information */ 1556 left_len = resp_size - sizeof(struct host_cmd_ds_get_hw_spec); 1557 while (left_len > sizeof(struct mwifiex_ie_types_header)) { 1558 tlv = (void *)&hw_spec->tlvs + parsed_len; 1559 switch (le16_to_cpu(tlv->type)) { 1560 case TLV_TYPE_API_REV: 1561 api_rev = (struct hw_spec_api_rev *)tlv; 1562 api_id = le16_to_cpu(api_rev->api_id); 1563 switch (api_id) { 1564 case KEY_API_VER_ID: 1565 adapter->key_api_major_ver = 1566 api_rev->major_ver; 1567 adapter->key_api_minor_ver = 1568 api_rev->minor_ver; 1569 mwifiex_dbg(adapter, INFO, 1570 "key_api v%d.%d\n", 1571 adapter->key_api_major_ver, 1572 adapter->key_api_minor_ver); 1573 break; 1574 case FW_API_VER_ID: 1575 adapter->fw_api_ver = 1576 api_rev->major_ver; 1577 mwifiex_dbg(adapter, INFO, 1578 "Firmware api version %d\n", 1579 adapter->fw_api_ver); 1580 break; 1581 default: 1582 mwifiex_dbg(adapter, FATAL, 1583 "Unknown api_id: %d\n", 1584 api_id); 1585 break; 1586 } 1587 break; 1588 default: 1589 mwifiex_dbg(adapter, FATAL, 1590 "Unknown GET_HW_SPEC TLV type: %#x\n", 1591 le16_to_cpu(tlv->type)); 1592 break; 1593 } 1594 parsed_len += le16_to_cpu(tlv->len) + 1595 sizeof(struct mwifiex_ie_types_header); 1596 left_len -= le16_to_cpu(tlv->len) + 1597 sizeof(struct mwifiex_ie_types_header); 1598 } 1599 } 1600 1601 mwifiex_dbg(adapter, INFO, 1602 "info: GET_HW_SPEC: fw_release_number- %#x\n", 1603 adapter->fw_release_number); 1604 mwifiex_dbg(adapter, INFO, 1605 "info: GET_HW_SPEC: permanent addr: %pM\n", 1606 hw_spec->permanent_addr); 1607 mwifiex_dbg(adapter, INFO, 1608 "info: GET_HW_SPEC: hw_if_version=%#x version=%#x\n", 1609 le16_to_cpu(hw_spec->hw_if_version), 1610 le16_to_cpu(hw_spec->version)); 1611 1612 ether_addr_copy(priv->adapter->perm_addr, hw_spec->permanent_addr); 1613 adapter->region_code = le16_to_cpu(hw_spec->region_code); 1614 1615 for (i = 0; i < MWIFIEX_MAX_REGION_CODE; i++) 1616 /* Use the region code to search for the index */ 1617 if (adapter->region_code == region_code_index[i]) 1618 break; 1619 1620 /* If it's unidentified region code, use the default (world) */ 1621 if (i >= MWIFIEX_MAX_REGION_CODE) { 1622 adapter->region_code = 0x00; 1623 mwifiex_dbg(adapter, WARN, 1624 "cmd: unknown region code, use default (USA)\n"); 1625 } 1626 1627 adapter->hw_dot_11n_dev_cap = le32_to_cpu(hw_spec->dot_11n_dev_cap); 1628 adapter->hw_dev_mcs_support = hw_spec->dev_mcs_support; 1629 adapter->user_dev_mcs_support = adapter->hw_dev_mcs_support; 1630 1631 if (adapter->if_ops.update_mp_end_port) 1632 adapter->if_ops.update_mp_end_port(adapter, 1633 le16_to_cpu(hw_spec->mp_end_port)); 1634 1635 if (adapter->fw_api_ver == MWIFIEX_FW_V15) 1636 adapter->scan_chan_gap_enabled = true; 1637 1638 return 0; 1639 } 1640 1641 /* This function handles the command response of hs wakeup reason 1642 * command. 1643 */ 1644 int mwifiex_ret_wakeup_reason(struct mwifiex_private *priv, 1645 struct host_cmd_ds_command *resp, 1646 struct host_cmd_ds_wakeup_reason *wakeup_reason) 1647 { 1648 wakeup_reason->wakeup_reason = 1649 resp->params.hs_wakeup_reason.wakeup_reason; 1650 1651 return 0; 1652 } 1653