1 /* 2 * This file is part of wl1271 3 * 4 * Copyright (C) 2009-2010 Nokia Corporation 5 * 6 * Contact: Luciano Coelho <luciano.coelho@nokia.com> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * version 2 as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20 * 02110-1301 USA 21 * 22 */ 23 24 #include <linux/module.h> 25 #include <linux/platform_device.h> 26 #include <linux/spi/spi.h> 27 #include <linux/etherdevice.h> 28 #include <linux/ieee80211.h> 29 #include <linux/slab.h> 30 31 #include "wlcore.h" 32 #include "debug.h" 33 #include "io.h" 34 #include "acx.h" 35 #include "wl12xx_80211.h" 36 #include "cmd.h" 37 #include "event.h" 38 #include "tx.h" 39 #include "hw_ops.h" 40 41 #define WL1271_CMD_FAST_POLL_COUNT 50 42 #define WL1271_WAIT_EVENT_FAST_POLL_COUNT 20 43 44 /* 45 * send command to firmware 46 * 47 * @wl: wl struct 48 * @id: command id 49 * @buf: buffer containing the command, must work with dma 50 * @len: length of the buffer 51 * return the cmd status code on success. 52 */ 53 static int __wlcore_cmd_send(struct wl1271 *wl, u16 id, void *buf, 54 size_t len, size_t res_len) 55 { 56 struct wl1271_cmd_header *cmd; 57 unsigned long timeout; 58 u32 intr; 59 int ret; 60 u16 status; 61 u16 poll_count = 0; 62 63 if (unlikely(wl->state == WLCORE_STATE_RESTARTING && 64 id != CMD_STOP_FWLOGGER)) 65 return -EIO; 66 67 cmd = buf; 68 cmd->id = cpu_to_le16(id); 69 cmd->status = 0; 70 71 WARN_ON(len % 4 != 0); 72 WARN_ON(test_bit(WL1271_FLAG_IN_ELP, &wl->flags)); 73 74 ret = wlcore_write(wl, wl->cmd_box_addr, buf, len, false); 75 if (ret < 0) 76 return ret; 77 78 /* 79 * TODO: we just need this because one bit is in a different 80 * place. Is there any better way? 81 */ 82 ret = wl->ops->trigger_cmd(wl, wl->cmd_box_addr, buf, len); 83 if (ret < 0) 84 return ret; 85 86 timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT); 87 88 ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr); 89 if (ret < 0) 90 return ret; 91 92 while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) { 93 if (time_after(jiffies, timeout)) { 94 wl1271_error("command complete timeout"); 95 return -ETIMEDOUT; 96 } 97 98 poll_count++; 99 if (poll_count < WL1271_CMD_FAST_POLL_COUNT) 100 udelay(10); 101 else 102 msleep(1); 103 104 ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr); 105 if (ret < 0) 106 return ret; 107 } 108 109 /* read back the status code of the command */ 110 if (res_len == 0) 111 res_len = sizeof(struct wl1271_cmd_header); 112 113 ret = wlcore_read(wl, wl->cmd_box_addr, cmd, res_len, false); 114 if (ret < 0) 115 return ret; 116 117 status = le16_to_cpu(cmd->status); 118 119 ret = wlcore_write_reg(wl, REG_INTERRUPT_ACK, 120 WL1271_ACX_INTR_CMD_COMPLETE); 121 if (ret < 0) 122 return ret; 123 124 return status; 125 } 126 127 /* 128 * send command to fw and return cmd status on success 129 * valid_rets contains a bitmap of allowed error codes 130 */ 131 int wlcore_cmd_send_failsafe(struct wl1271 *wl, u16 id, void *buf, size_t len, 132 size_t res_len, unsigned long valid_rets) 133 { 134 int ret = __wlcore_cmd_send(wl, id, buf, len, res_len); 135 136 if (ret < 0) 137 goto fail; 138 139 /* success is always a valid status */ 140 valid_rets |= BIT(CMD_STATUS_SUCCESS); 141 142 if (ret >= MAX_COMMAND_STATUS || 143 !test_bit(ret, &valid_rets)) { 144 wl1271_error("command execute failure %d", ret); 145 ret = -EIO; 146 goto fail; 147 } 148 return ret; 149 fail: 150 wl12xx_queue_recovery_work(wl); 151 return ret; 152 } 153 EXPORT_SYMBOL_GPL(wl1271_cmd_send); 154 155 /* 156 * wrapper for wlcore_cmd_send that accept only CMD_STATUS_SUCCESS 157 * return 0 on success. 158 */ 159 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len, 160 size_t res_len) 161 { 162 int ret = wlcore_cmd_send_failsafe(wl, id, buf, len, res_len, 0); 163 164 if (ret < 0) 165 return ret; 166 return 0; 167 } 168 169 /* 170 * Poll the mailbox event field until any of the bits in the mask is set or a 171 * timeout occurs (WL1271_EVENT_TIMEOUT in msecs) 172 */ 173 int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl, 174 u32 mask, bool *timeout) 175 { 176 u32 *events_vector; 177 u32 event; 178 unsigned long timeout_time; 179 u16 poll_count = 0; 180 int ret = 0; 181 182 *timeout = false; 183 184 events_vector = kmalloc(sizeof(*events_vector), GFP_KERNEL | GFP_DMA); 185 if (!events_vector) 186 return -ENOMEM; 187 188 timeout_time = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT); 189 190 do { 191 if (time_after(jiffies, timeout_time)) { 192 wl1271_debug(DEBUG_CMD, "timeout waiting for event %d", 193 (int)mask); 194 *timeout = true; 195 goto out; 196 } 197 198 poll_count++; 199 if (poll_count < WL1271_WAIT_EVENT_FAST_POLL_COUNT) 200 usleep_range(50, 51); 201 else 202 usleep_range(1000, 5000); 203 204 /* read from both event fields */ 205 ret = wlcore_read(wl, wl->mbox_ptr[0], events_vector, 206 sizeof(*events_vector), false); 207 if (ret < 0) 208 goto out; 209 210 event = *events_vector & mask; 211 212 ret = wlcore_read(wl, wl->mbox_ptr[1], events_vector, 213 sizeof(*events_vector), false); 214 if (ret < 0) 215 goto out; 216 217 event |= *events_vector & mask; 218 } while (!event); 219 220 out: 221 kfree(events_vector); 222 return ret; 223 } 224 EXPORT_SYMBOL_GPL(wlcore_cmd_wait_for_event_or_timeout); 225 226 int wl12xx_cmd_role_enable(struct wl1271 *wl, u8 *addr, u8 role_type, 227 u8 *role_id) 228 { 229 struct wl12xx_cmd_role_enable *cmd; 230 int ret; 231 232 wl1271_debug(DEBUG_CMD, "cmd role enable"); 233 234 if (WARN_ON(*role_id != WL12XX_INVALID_ROLE_ID)) 235 return -EBUSY; 236 237 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 238 if (!cmd) { 239 ret = -ENOMEM; 240 goto out; 241 } 242 243 /* get role id */ 244 cmd->role_id = find_first_zero_bit(wl->roles_map, WL12XX_MAX_ROLES); 245 if (cmd->role_id >= WL12XX_MAX_ROLES) { 246 ret = -EBUSY; 247 goto out_free; 248 } 249 250 memcpy(cmd->mac_address, addr, ETH_ALEN); 251 cmd->role_type = role_type; 252 253 ret = wl1271_cmd_send(wl, CMD_ROLE_ENABLE, cmd, sizeof(*cmd), 0); 254 if (ret < 0) { 255 wl1271_error("failed to initiate cmd role enable"); 256 goto out_free; 257 } 258 259 __set_bit(cmd->role_id, wl->roles_map); 260 *role_id = cmd->role_id; 261 262 out_free: 263 kfree(cmd); 264 265 out: 266 return ret; 267 } 268 269 int wl12xx_cmd_role_disable(struct wl1271 *wl, u8 *role_id) 270 { 271 struct wl12xx_cmd_role_disable *cmd; 272 int ret; 273 274 wl1271_debug(DEBUG_CMD, "cmd role disable"); 275 276 if (WARN_ON(*role_id == WL12XX_INVALID_ROLE_ID)) 277 return -ENOENT; 278 279 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 280 if (!cmd) { 281 ret = -ENOMEM; 282 goto out; 283 } 284 cmd->role_id = *role_id; 285 286 ret = wl1271_cmd_send(wl, CMD_ROLE_DISABLE, cmd, sizeof(*cmd), 0); 287 if (ret < 0) { 288 wl1271_error("failed to initiate cmd role disable"); 289 goto out_free; 290 } 291 292 __clear_bit(*role_id, wl->roles_map); 293 *role_id = WL12XX_INVALID_ROLE_ID; 294 295 out_free: 296 kfree(cmd); 297 298 out: 299 return ret; 300 } 301 302 static int wlcore_get_new_session_id(struct wl1271 *wl, u8 hlid) 303 { 304 if (wl->session_ids[hlid] >= SESSION_COUNTER_MAX) 305 wl->session_ids[hlid] = 0; 306 307 wl->session_ids[hlid]++; 308 309 return wl->session_ids[hlid]; 310 } 311 312 int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid) 313 { 314 unsigned long flags; 315 u8 link = find_first_zero_bit(wl->links_map, wl->num_links); 316 if (link >= wl->num_links) 317 return -EBUSY; 318 319 wl->session_ids[link] = wlcore_get_new_session_id(wl, link); 320 321 /* these bits are used by op_tx */ 322 spin_lock_irqsave(&wl->wl_lock, flags); 323 __set_bit(link, wl->links_map); 324 __set_bit(link, wlvif->links_map); 325 spin_unlock_irqrestore(&wl->wl_lock, flags); 326 327 /* 328 * take the last "freed packets" value from the current FW status. 329 * on recovery, we might not have fw_status yet, and 330 * tx_lnk_free_pkts will be NULL. check for it. 331 */ 332 if (wl->fw_status->counters.tx_lnk_free_pkts) 333 wl->links[link].prev_freed_pkts = 334 wl->fw_status->counters.tx_lnk_free_pkts[link]; 335 wl->links[link].wlvif = wlvif; 336 337 /* 338 * Take saved value for total freed packets from wlvif, in case this is 339 * recovery/resume 340 */ 341 if (wlvif->bss_type != BSS_TYPE_AP_BSS) 342 wl->links[link].total_freed_pkts = wlvif->total_freed_pkts; 343 344 *hlid = link; 345 346 wl->active_link_count++; 347 return 0; 348 } 349 350 void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid) 351 { 352 unsigned long flags; 353 354 if (*hlid == WL12XX_INVALID_LINK_ID) 355 return; 356 357 /* these bits are used by op_tx */ 358 spin_lock_irqsave(&wl->wl_lock, flags); 359 __clear_bit(*hlid, wl->links_map); 360 __clear_bit(*hlid, wlvif->links_map); 361 spin_unlock_irqrestore(&wl->wl_lock, flags); 362 363 wl->links[*hlid].allocated_pkts = 0; 364 wl->links[*hlid].prev_freed_pkts = 0; 365 wl->links[*hlid].ba_bitmap = 0; 366 memset(wl->links[*hlid].addr, 0, ETH_ALEN); 367 368 /* 369 * At this point op_tx() will not add more packets to the queues. We 370 * can purge them. 371 */ 372 wl1271_tx_reset_link_queues(wl, *hlid); 373 wl->links[*hlid].wlvif = NULL; 374 375 if (wlvif->bss_type == BSS_TYPE_STA_BSS || 376 (wlvif->bss_type == BSS_TYPE_AP_BSS && 377 *hlid == wlvif->ap.bcast_hlid)) { 378 /* 379 * save the total freed packets in the wlvif, in case this is 380 * recovery or suspend 381 */ 382 wlvif->total_freed_pkts = wl->links[*hlid].total_freed_pkts; 383 384 /* 385 * increment the initial seq number on recovery to account for 386 * transmitted packets that we haven't yet got in the FW status 387 */ 388 if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) 389 wlvif->total_freed_pkts += 390 WL1271_TX_SQN_POST_RECOVERY_PADDING; 391 } 392 393 wl->links[*hlid].total_freed_pkts = 0; 394 395 *hlid = WL12XX_INVALID_LINK_ID; 396 wl->active_link_count--; 397 WARN_ON_ONCE(wl->active_link_count < 0); 398 } 399 400 static u8 wlcore_get_native_channel_type(u8 nl_channel_type) 401 { 402 switch (nl_channel_type) { 403 case NL80211_CHAN_NO_HT: 404 return WLCORE_CHAN_NO_HT; 405 case NL80211_CHAN_HT20: 406 return WLCORE_CHAN_HT20; 407 case NL80211_CHAN_HT40MINUS: 408 return WLCORE_CHAN_HT40MINUS; 409 case NL80211_CHAN_HT40PLUS: 410 return WLCORE_CHAN_HT40PLUS; 411 default: 412 WARN_ON(1); 413 return WLCORE_CHAN_NO_HT; 414 } 415 } 416 417 static int wl12xx_cmd_role_start_dev(struct wl1271 *wl, 418 struct wl12xx_vif *wlvif, 419 enum ieee80211_band band, 420 int channel) 421 { 422 struct wl12xx_cmd_role_start *cmd; 423 int ret; 424 425 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 426 if (!cmd) { 427 ret = -ENOMEM; 428 goto out; 429 } 430 431 wl1271_debug(DEBUG_CMD, "cmd role start dev %d", wlvif->dev_role_id); 432 433 cmd->role_id = wlvif->dev_role_id; 434 if (band == IEEE80211_BAND_5GHZ) 435 cmd->band = WLCORE_BAND_5GHZ; 436 cmd->channel = channel; 437 438 if (wlvif->dev_hlid == WL12XX_INVALID_LINK_ID) { 439 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->dev_hlid); 440 if (ret) 441 goto out_free; 442 } 443 cmd->device.hlid = wlvif->dev_hlid; 444 cmd->device.session = wl->session_ids[wlvif->dev_hlid]; 445 446 wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d", 447 cmd->role_id, cmd->device.hlid, cmd->device.session); 448 449 ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0); 450 if (ret < 0) { 451 wl1271_error("failed to initiate cmd role enable"); 452 goto err_hlid; 453 } 454 455 goto out_free; 456 457 err_hlid: 458 /* clear links on error */ 459 wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid); 460 461 out_free: 462 kfree(cmd); 463 464 out: 465 return ret; 466 } 467 468 static int wl12xx_cmd_role_stop_dev(struct wl1271 *wl, 469 struct wl12xx_vif *wlvif) 470 { 471 struct wl12xx_cmd_role_stop *cmd; 472 int ret; 473 474 if (WARN_ON(wlvif->dev_hlid == WL12XX_INVALID_LINK_ID)) 475 return -EINVAL; 476 477 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 478 if (!cmd) { 479 ret = -ENOMEM; 480 goto out; 481 } 482 483 wl1271_debug(DEBUG_CMD, "cmd role stop dev"); 484 485 cmd->role_id = wlvif->dev_role_id; 486 cmd->disc_type = DISCONNECT_IMMEDIATE; 487 cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED); 488 489 ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0); 490 if (ret < 0) { 491 wl1271_error("failed to initiate cmd role stop"); 492 goto out_free; 493 } 494 495 wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid); 496 497 out_free: 498 kfree(cmd); 499 500 out: 501 return ret; 502 } 503 504 int wl12xx_cmd_role_start_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif) 505 { 506 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 507 struct wl12xx_cmd_role_start *cmd; 508 u32 supported_rates; 509 int ret; 510 511 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 512 if (!cmd) { 513 ret = -ENOMEM; 514 goto out; 515 } 516 517 wl1271_debug(DEBUG_CMD, "cmd role start sta %d", wlvif->role_id); 518 519 cmd->role_id = wlvif->role_id; 520 if (wlvif->band == IEEE80211_BAND_5GHZ) 521 cmd->band = WLCORE_BAND_5GHZ; 522 cmd->channel = wlvif->channel; 523 cmd->sta.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set); 524 cmd->sta.beacon_interval = cpu_to_le16(wlvif->beacon_int); 525 cmd->sta.ssid_type = WL12XX_SSID_TYPE_ANY; 526 cmd->sta.ssid_len = wlvif->ssid_len; 527 memcpy(cmd->sta.ssid, wlvif->ssid, wlvif->ssid_len); 528 memcpy(cmd->sta.bssid, vif->bss_conf.bssid, ETH_ALEN); 529 530 supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES | 531 wlcore_hw_sta_get_ap_rate_mask(wl, wlvif); 532 if (wlvif->p2p) 533 supported_rates &= ~CONF_TX_CCK_RATES; 534 535 cmd->sta.local_rates = cpu_to_le32(supported_rates); 536 537 cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type); 538 539 if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) { 540 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid); 541 if (ret) 542 goto out_free; 543 } 544 cmd->sta.hlid = wlvif->sta.hlid; 545 cmd->sta.session = wl->session_ids[wlvif->sta.hlid]; 546 /* 547 * We don't have the correct remote rates in this stage. The 548 * rates will be reconfigured later, after association, if the 549 * firmware supports ACX_PEER_CAP. Otherwise, there's nothing 550 * we can do, so use all supported_rates here. 551 */ 552 cmd->sta.remote_rates = cpu_to_le32(supported_rates); 553 554 wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d " 555 "basic_rate_set: 0x%x, remote_rates: 0x%x", 556 wlvif->role_id, cmd->sta.hlid, cmd->sta.session, 557 wlvif->basic_rate_set, wlvif->rate_set); 558 559 ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0); 560 if (ret < 0) { 561 wl1271_error("failed to initiate cmd role start sta"); 562 goto err_hlid; 563 } 564 565 wlvif->sta.role_chan_type = wlvif->channel_type; 566 goto out_free; 567 568 err_hlid: 569 /* clear links on error. */ 570 wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid); 571 572 out_free: 573 kfree(cmd); 574 575 out: 576 return ret; 577 } 578 579 /* use this function to stop ibss as well */ 580 int wl12xx_cmd_role_stop_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif) 581 { 582 struct wl12xx_cmd_role_stop *cmd; 583 int ret; 584 585 if (WARN_ON(wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)) 586 return -EINVAL; 587 588 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 589 if (!cmd) { 590 ret = -ENOMEM; 591 goto out; 592 } 593 594 wl1271_debug(DEBUG_CMD, "cmd role stop sta %d", wlvif->role_id); 595 596 cmd->role_id = wlvif->role_id; 597 cmd->disc_type = DISCONNECT_IMMEDIATE; 598 cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED); 599 600 ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0); 601 if (ret < 0) { 602 wl1271_error("failed to initiate cmd role stop sta"); 603 goto out_free; 604 } 605 606 wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid); 607 608 out_free: 609 kfree(cmd); 610 611 out: 612 return ret; 613 } 614 615 int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif) 616 { 617 struct wl12xx_cmd_role_start *cmd; 618 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 619 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 620 u32 supported_rates; 621 int ret; 622 623 wl1271_debug(DEBUG_CMD, "cmd role start ap %d", wlvif->role_id); 624 625 /* trying to use hidden SSID with an old hostapd version */ 626 if (wlvif->ssid_len == 0 && !bss_conf->hidden_ssid) { 627 wl1271_error("got a null SSID from beacon/bss"); 628 ret = -EINVAL; 629 goto out; 630 } 631 632 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 633 if (!cmd) { 634 ret = -ENOMEM; 635 goto out; 636 } 637 638 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.global_hlid); 639 if (ret < 0) 640 goto out_free; 641 642 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.bcast_hlid); 643 if (ret < 0) 644 goto out_free_global; 645 646 /* use the previous security seq, if this is a recovery/resume */ 647 wl->links[wlvif->ap.bcast_hlid].total_freed_pkts = 648 wlvif->total_freed_pkts; 649 650 cmd->role_id = wlvif->role_id; 651 cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period); 652 cmd->ap.bss_index = WL1271_AP_BSS_INDEX; 653 cmd->ap.global_hlid = wlvif->ap.global_hlid; 654 cmd->ap.broadcast_hlid = wlvif->ap.bcast_hlid; 655 cmd->ap.global_session_id = wl->session_ids[wlvif->ap.global_hlid]; 656 cmd->ap.bcast_session_id = wl->session_ids[wlvif->ap.bcast_hlid]; 657 cmd->ap.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set); 658 cmd->ap.beacon_interval = cpu_to_le16(wlvif->beacon_int); 659 cmd->ap.dtim_interval = bss_conf->dtim_period; 660 cmd->ap.beacon_expiry = WL1271_AP_DEF_BEACON_EXP; 661 /* FIXME: Change when adding DFS */ 662 cmd->ap.reset_tsf = 1; /* By default reset AP TSF */ 663 cmd->ap.wmm = wlvif->wmm_enabled; 664 cmd->channel = wlvif->channel; 665 cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type); 666 667 if (!bss_conf->hidden_ssid) { 668 /* take the SSID from the beacon for backward compatibility */ 669 cmd->ap.ssid_type = WL12XX_SSID_TYPE_PUBLIC; 670 cmd->ap.ssid_len = wlvif->ssid_len; 671 memcpy(cmd->ap.ssid, wlvif->ssid, wlvif->ssid_len); 672 } else { 673 cmd->ap.ssid_type = WL12XX_SSID_TYPE_HIDDEN; 674 cmd->ap.ssid_len = bss_conf->ssid_len; 675 memcpy(cmd->ap.ssid, bss_conf->ssid, bss_conf->ssid_len); 676 } 677 678 supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES | 679 wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif); 680 if (wlvif->p2p) 681 supported_rates &= ~CONF_TX_CCK_RATES; 682 683 wl1271_debug(DEBUG_CMD, "cmd role start ap with supported_rates 0x%08x", 684 supported_rates); 685 686 cmd->ap.local_rates = cpu_to_le32(supported_rates); 687 688 switch (wlvif->band) { 689 case IEEE80211_BAND_2GHZ: 690 cmd->band = WLCORE_BAND_2_4GHZ; 691 break; 692 case IEEE80211_BAND_5GHZ: 693 cmd->band = WLCORE_BAND_5GHZ; 694 break; 695 default: 696 wl1271_warning("ap start - unknown band: %d", (int)wlvif->band); 697 cmd->band = WLCORE_BAND_2_4GHZ; 698 break; 699 } 700 701 ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0); 702 if (ret < 0) { 703 wl1271_error("failed to initiate cmd role start ap"); 704 goto out_free_bcast; 705 } 706 707 goto out_free; 708 709 out_free_bcast: 710 wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid); 711 712 out_free_global: 713 wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid); 714 715 out_free: 716 kfree(cmd); 717 718 out: 719 return ret; 720 } 721 722 int wl12xx_cmd_role_stop_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif) 723 { 724 struct wl12xx_cmd_role_stop *cmd; 725 int ret; 726 727 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 728 if (!cmd) { 729 ret = -ENOMEM; 730 goto out; 731 } 732 733 wl1271_debug(DEBUG_CMD, "cmd role stop ap %d", wlvif->role_id); 734 735 cmd->role_id = wlvif->role_id; 736 737 ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0); 738 if (ret < 0) { 739 wl1271_error("failed to initiate cmd role stop ap"); 740 goto out_free; 741 } 742 743 wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid); 744 wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid); 745 746 out_free: 747 kfree(cmd); 748 749 out: 750 return ret; 751 } 752 753 int wl12xx_cmd_role_start_ibss(struct wl1271 *wl, struct wl12xx_vif *wlvif) 754 { 755 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 756 struct wl12xx_cmd_role_start *cmd; 757 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 758 int ret; 759 760 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 761 if (!cmd) { 762 ret = -ENOMEM; 763 goto out; 764 } 765 766 wl1271_debug(DEBUG_CMD, "cmd role start ibss %d", wlvif->role_id); 767 768 cmd->role_id = wlvif->role_id; 769 if (wlvif->band == IEEE80211_BAND_5GHZ) 770 cmd->band = WLCORE_BAND_5GHZ; 771 cmd->channel = wlvif->channel; 772 cmd->ibss.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set); 773 cmd->ibss.beacon_interval = cpu_to_le16(wlvif->beacon_int); 774 cmd->ibss.dtim_interval = bss_conf->dtim_period; 775 cmd->ibss.ssid_type = WL12XX_SSID_TYPE_ANY; 776 cmd->ibss.ssid_len = wlvif->ssid_len; 777 memcpy(cmd->ibss.ssid, wlvif->ssid, wlvif->ssid_len); 778 memcpy(cmd->ibss.bssid, vif->bss_conf.bssid, ETH_ALEN); 779 cmd->sta.local_rates = cpu_to_le32(wlvif->rate_set); 780 781 if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) { 782 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid); 783 if (ret) 784 goto out_free; 785 } 786 cmd->ibss.hlid = wlvif->sta.hlid; 787 cmd->ibss.remote_rates = cpu_to_le32(wlvif->rate_set); 788 789 wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d " 790 "basic_rate_set: 0x%x, remote_rates: 0x%x", 791 wlvif->role_id, cmd->sta.hlid, cmd->sta.session, 792 wlvif->basic_rate_set, wlvif->rate_set); 793 794 wl1271_debug(DEBUG_CMD, "vif->bss_conf.bssid = %pM", 795 vif->bss_conf.bssid); 796 797 ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0); 798 if (ret < 0) { 799 wl1271_error("failed to initiate cmd role enable"); 800 goto err_hlid; 801 } 802 803 goto out_free; 804 805 err_hlid: 806 /* clear links on error. */ 807 wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid); 808 809 out_free: 810 kfree(cmd); 811 812 out: 813 return ret; 814 } 815 816 817 /** 818 * send test command to firmware 819 * 820 * @wl: wl struct 821 * @buf: buffer containing the command, with all headers, must work with dma 822 * @len: length of the buffer 823 * @answer: is answer needed 824 */ 825 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer) 826 { 827 int ret; 828 size_t res_len = 0; 829 830 wl1271_debug(DEBUG_CMD, "cmd test"); 831 832 if (answer) 833 res_len = buf_len; 834 835 ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len); 836 837 if (ret < 0) { 838 wl1271_warning("TEST command failed"); 839 return ret; 840 } 841 842 return ret; 843 } 844 EXPORT_SYMBOL_GPL(wl1271_cmd_test); 845 846 /** 847 * read acx from firmware 848 * 849 * @wl: wl struct 850 * @id: acx id 851 * @buf: buffer for the response, including all headers, must work with dma 852 * @len: length of buf 853 */ 854 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, 855 size_t cmd_len, size_t res_len) 856 { 857 struct acx_header *acx = buf; 858 int ret; 859 860 wl1271_debug(DEBUG_CMD, "cmd interrogate"); 861 862 acx->id = cpu_to_le16(id); 863 864 /* response payload length, does not include any headers */ 865 acx->len = cpu_to_le16(res_len - sizeof(*acx)); 866 867 ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, cmd_len, res_len); 868 if (ret < 0) 869 wl1271_error("INTERROGATE command failed"); 870 871 return ret; 872 } 873 874 /** 875 * write acx value to firmware 876 * 877 * @wl: wl struct 878 * @id: acx id 879 * @buf: buffer containing acx, including all headers, must work with dma 880 * @len: length of buf 881 * @valid_rets: bitmap of valid cmd status codes (i.e. return values). 882 * return the cmd status on success. 883 */ 884 int wlcore_cmd_configure_failsafe(struct wl1271 *wl, u16 id, void *buf, 885 size_t len, unsigned long valid_rets) 886 { 887 struct acx_header *acx = buf; 888 int ret; 889 890 wl1271_debug(DEBUG_CMD, "cmd configure (%d)", id); 891 892 acx->id = cpu_to_le16(id); 893 894 /* payload length, does not include any headers */ 895 acx->len = cpu_to_le16(len - sizeof(*acx)); 896 897 ret = wlcore_cmd_send_failsafe(wl, CMD_CONFIGURE, acx, len, 0, 898 valid_rets); 899 if (ret < 0) { 900 wl1271_warning("CONFIGURE command NOK"); 901 return ret; 902 } 903 904 return ret; 905 } 906 907 /* 908 * wrapper for wlcore_cmd_configure that accepts only success status. 909 * return 0 on success 910 */ 911 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len) 912 { 913 int ret = wlcore_cmd_configure_failsafe(wl, id, buf, len, 0); 914 915 if (ret < 0) 916 return ret; 917 return 0; 918 } 919 EXPORT_SYMBOL_GPL(wl1271_cmd_configure); 920 921 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable) 922 { 923 struct cmd_enabledisable_path *cmd; 924 int ret; 925 u16 cmd_rx, cmd_tx; 926 927 wl1271_debug(DEBUG_CMD, "cmd data path"); 928 929 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 930 if (!cmd) { 931 ret = -ENOMEM; 932 goto out; 933 } 934 935 /* the channel here is only used for calibration, so hardcoded to 1 */ 936 cmd->channel = 1; 937 938 if (enable) { 939 cmd_rx = CMD_ENABLE_RX; 940 cmd_tx = CMD_ENABLE_TX; 941 } else { 942 cmd_rx = CMD_DISABLE_RX; 943 cmd_tx = CMD_DISABLE_TX; 944 } 945 946 ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0); 947 if (ret < 0) { 948 wl1271_error("rx %s cmd for channel %d failed", 949 enable ? "start" : "stop", cmd->channel); 950 goto out; 951 } 952 953 wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d", 954 enable ? "start" : "stop", cmd->channel); 955 956 ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0); 957 if (ret < 0) { 958 wl1271_error("tx %s cmd for channel %d failed", 959 enable ? "start" : "stop", cmd->channel); 960 goto out; 961 } 962 963 wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d", 964 enable ? "start" : "stop", cmd->channel); 965 966 out: 967 kfree(cmd); 968 return ret; 969 } 970 EXPORT_SYMBOL_GPL(wl1271_cmd_data_path); 971 972 int wl1271_cmd_ps_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif, 973 u8 ps_mode, u16 auto_ps_timeout) 974 { 975 struct wl1271_cmd_ps_params *ps_params = NULL; 976 int ret = 0; 977 978 wl1271_debug(DEBUG_CMD, "cmd set ps mode"); 979 980 ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL); 981 if (!ps_params) { 982 ret = -ENOMEM; 983 goto out; 984 } 985 986 ps_params->role_id = wlvif->role_id; 987 ps_params->ps_mode = ps_mode; 988 ps_params->auto_ps_timeout = auto_ps_timeout; 989 990 ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params, 991 sizeof(*ps_params), 0); 992 if (ret < 0) { 993 wl1271_error("cmd set_ps_mode failed"); 994 goto out; 995 } 996 997 out: 998 kfree(ps_params); 999 return ret; 1000 } 1001 1002 int wl1271_cmd_template_set(struct wl1271 *wl, u8 role_id, 1003 u16 template_id, void *buf, size_t buf_len, 1004 int index, u32 rates) 1005 { 1006 struct wl1271_cmd_template_set *cmd; 1007 int ret = 0; 1008 1009 wl1271_debug(DEBUG_CMD, "cmd template_set %d (role %d)", 1010 template_id, role_id); 1011 1012 WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE); 1013 buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE); 1014 1015 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1016 if (!cmd) { 1017 ret = -ENOMEM; 1018 goto out; 1019 } 1020 1021 /* during initialization wlvif is NULL */ 1022 cmd->role_id = role_id; 1023 cmd->len = cpu_to_le16(buf_len); 1024 cmd->template_type = template_id; 1025 cmd->enabled_rates = cpu_to_le32(rates); 1026 cmd->short_retry_limit = wl->conf.tx.tmpl_short_retry_limit; 1027 cmd->long_retry_limit = wl->conf.tx.tmpl_long_retry_limit; 1028 cmd->index = index; 1029 1030 if (buf) 1031 memcpy(cmd->template_data, buf, buf_len); 1032 1033 ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0); 1034 if (ret < 0) { 1035 wl1271_warning("cmd set_template failed: %d", ret); 1036 goto out_free; 1037 } 1038 1039 out_free: 1040 kfree(cmd); 1041 1042 out: 1043 return ret; 1044 } 1045 1046 int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif) 1047 { 1048 struct sk_buff *skb = NULL; 1049 int size; 1050 void *ptr; 1051 int ret = -ENOMEM; 1052 1053 1054 if (wlvif->bss_type == BSS_TYPE_IBSS) { 1055 size = sizeof(struct wl12xx_null_data_template); 1056 ptr = NULL; 1057 } else { 1058 skb = ieee80211_nullfunc_get(wl->hw, 1059 wl12xx_wlvif_to_vif(wlvif)); 1060 if (!skb) 1061 goto out; 1062 size = skb->len; 1063 ptr = skb->data; 1064 } 1065 1066 ret = wl1271_cmd_template_set(wl, wlvif->role_id, 1067 CMD_TEMPL_NULL_DATA, ptr, size, 0, 1068 wlvif->basic_rate); 1069 1070 out: 1071 dev_kfree_skb(skb); 1072 if (ret) 1073 wl1271_warning("cmd buld null data failed %d", ret); 1074 1075 return ret; 1076 1077 } 1078 1079 int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl, 1080 struct wl12xx_vif *wlvif) 1081 { 1082 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 1083 struct sk_buff *skb = NULL; 1084 int ret = -ENOMEM; 1085 1086 skb = ieee80211_nullfunc_get(wl->hw, vif); 1087 if (!skb) 1088 goto out; 1089 1090 ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV, 1091 skb->data, skb->len, 1092 wlvif->sta.klv_template_id, 1093 wlvif->basic_rate); 1094 1095 out: 1096 dev_kfree_skb(skb); 1097 if (ret) 1098 wl1271_warning("cmd build klv null data failed %d", ret); 1099 1100 return ret; 1101 1102 } 1103 1104 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1105 u16 aid) 1106 { 1107 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 1108 struct sk_buff *skb; 1109 int ret = 0; 1110 1111 skb = ieee80211_pspoll_get(wl->hw, vif); 1112 if (!skb) 1113 goto out; 1114 1115 ret = wl1271_cmd_template_set(wl, wlvif->role_id, 1116 CMD_TEMPL_PS_POLL, skb->data, 1117 skb->len, 0, wlvif->basic_rate_set); 1118 1119 out: 1120 dev_kfree_skb(skb); 1121 return ret; 1122 } 1123 1124 int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1125 u8 role_id, u8 band, 1126 const u8 *ssid, size_t ssid_len, 1127 const u8 *ie, size_t ie_len, bool sched_scan) 1128 { 1129 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 1130 struct sk_buff *skb; 1131 int ret; 1132 u32 rate; 1133 u16 template_id_2_4 = wl->scan_templ_id_2_4; 1134 u16 template_id_5 = wl->scan_templ_id_5; 1135 1136 wl1271_debug(DEBUG_SCAN, "build probe request band %d", band); 1137 1138 skb = ieee80211_probereq_get(wl->hw, vif, ssid, ssid_len, 1139 ie_len); 1140 if (!skb) { 1141 ret = -ENOMEM; 1142 goto out; 1143 } 1144 if (ie_len) 1145 memcpy(skb_put(skb, ie_len), ie, ie_len); 1146 1147 if (sched_scan && 1148 (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) { 1149 template_id_2_4 = wl->sched_scan_templ_id_2_4; 1150 template_id_5 = wl->sched_scan_templ_id_5; 1151 } 1152 1153 rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]); 1154 if (band == IEEE80211_BAND_2GHZ) 1155 ret = wl1271_cmd_template_set(wl, role_id, 1156 template_id_2_4, 1157 skb->data, skb->len, 0, rate); 1158 else 1159 ret = wl1271_cmd_template_set(wl, role_id, 1160 template_id_5, 1161 skb->data, skb->len, 0, rate); 1162 1163 out: 1164 dev_kfree_skb(skb); 1165 return ret; 1166 } 1167 EXPORT_SYMBOL_GPL(wl12xx_cmd_build_probe_req); 1168 1169 struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl, 1170 struct wl12xx_vif *wlvif, 1171 struct sk_buff *skb) 1172 { 1173 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 1174 int ret; 1175 u32 rate; 1176 1177 if (!skb) 1178 skb = ieee80211_ap_probereq_get(wl->hw, vif); 1179 if (!skb) 1180 goto out; 1181 1182 wl1271_debug(DEBUG_SCAN, "set ap probe request template"); 1183 1184 rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]); 1185 if (wlvif->band == IEEE80211_BAND_2GHZ) 1186 ret = wl1271_cmd_template_set(wl, wlvif->role_id, 1187 CMD_TEMPL_CFG_PROBE_REQ_2_4, 1188 skb->data, skb->len, 0, rate); 1189 else 1190 ret = wl1271_cmd_template_set(wl, wlvif->role_id, 1191 CMD_TEMPL_CFG_PROBE_REQ_5, 1192 skb->data, skb->len, 0, rate); 1193 1194 if (ret < 0) 1195 wl1271_error("Unable to set ap probe request template."); 1196 1197 out: 1198 return skb; 1199 } 1200 1201 int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif) 1202 { 1203 int ret, extra = 0; 1204 u16 fc; 1205 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif); 1206 struct sk_buff *skb; 1207 struct wl12xx_arp_rsp_template *tmpl; 1208 struct ieee80211_hdr_3addr *hdr; 1209 struct arphdr *arp_hdr; 1210 1211 skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) + 1212 WL1271_EXTRA_SPACE_MAX); 1213 if (!skb) { 1214 wl1271_error("failed to allocate buffer for arp rsp template"); 1215 return -ENOMEM; 1216 } 1217 1218 skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX); 1219 1220 tmpl = (struct wl12xx_arp_rsp_template *)skb_put(skb, sizeof(*tmpl)); 1221 memset(tmpl, 0, sizeof(*tmpl)); 1222 1223 /* llc layer */ 1224 memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header)); 1225 tmpl->llc_type = cpu_to_be16(ETH_P_ARP); 1226 1227 /* arp header */ 1228 arp_hdr = &tmpl->arp_hdr; 1229 arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER); 1230 arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP); 1231 arp_hdr->ar_hln = ETH_ALEN; 1232 arp_hdr->ar_pln = 4; 1233 arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY); 1234 1235 /* arp payload */ 1236 memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN); 1237 tmpl->sender_ip = wlvif->ip_addr; 1238 1239 /* encryption space */ 1240 switch (wlvif->encryption_type) { 1241 case KEY_TKIP: 1242 if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) 1243 extra = WL1271_EXTRA_SPACE_TKIP; 1244 break; 1245 case KEY_AES: 1246 extra = WL1271_EXTRA_SPACE_AES; 1247 break; 1248 case KEY_NONE: 1249 case KEY_WEP: 1250 case KEY_GEM: 1251 extra = 0; 1252 break; 1253 default: 1254 wl1271_warning("Unknown encryption type: %d", 1255 wlvif->encryption_type); 1256 ret = -EINVAL; 1257 goto out; 1258 } 1259 1260 if (extra) { 1261 u8 *space = skb_push(skb, extra); 1262 memset(space, 0, extra); 1263 } 1264 1265 /* QoS header - BE */ 1266 if (wlvif->sta.qos) 1267 memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16)); 1268 1269 /* mac80211 header */ 1270 hdr = (struct ieee80211_hdr_3addr *)skb_push(skb, sizeof(*hdr)); 1271 memset(hdr, 0, sizeof(*hdr)); 1272 fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS; 1273 if (wlvif->sta.qos) 1274 fc |= IEEE80211_STYPE_QOS_DATA; 1275 else 1276 fc |= IEEE80211_STYPE_DATA; 1277 if (wlvif->encryption_type != KEY_NONE) 1278 fc |= IEEE80211_FCTL_PROTECTED; 1279 1280 hdr->frame_control = cpu_to_le16(fc); 1281 memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN); 1282 memcpy(hdr->addr2, vif->addr, ETH_ALEN); 1283 memset(hdr->addr3, 0xff, ETH_ALEN); 1284 1285 ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP, 1286 skb->data, skb->len, 0, 1287 wlvif->basic_rate); 1288 out: 1289 dev_kfree_skb(skb); 1290 return ret; 1291 } 1292 1293 int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif) 1294 { 1295 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif); 1296 struct ieee80211_qos_hdr template; 1297 1298 memset(&template, 0, sizeof(template)); 1299 1300 memcpy(template.addr1, vif->bss_conf.bssid, ETH_ALEN); 1301 memcpy(template.addr2, vif->addr, ETH_ALEN); 1302 memcpy(template.addr3, vif->bss_conf.bssid, ETH_ALEN); 1303 1304 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 1305 IEEE80211_STYPE_QOS_NULLFUNC | 1306 IEEE80211_FCTL_TODS); 1307 1308 /* FIXME: not sure what priority to use here */ 1309 template.qos_ctrl = cpu_to_le16(0); 1310 1311 return wl1271_cmd_template_set(wl, wlvif->role_id, 1312 CMD_TEMPL_QOS_NULL_DATA, &template, 1313 sizeof(template), 0, 1314 wlvif->basic_rate); 1315 } 1316 1317 int wl12xx_cmd_set_default_wep_key(struct wl1271 *wl, u8 id, u8 hlid) 1318 { 1319 struct wl1271_cmd_set_keys *cmd; 1320 int ret = 0; 1321 1322 wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id); 1323 1324 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1325 if (!cmd) { 1326 ret = -ENOMEM; 1327 goto out; 1328 } 1329 1330 cmd->hlid = hlid; 1331 cmd->key_id = id; 1332 cmd->lid_key_type = WEP_DEFAULT_LID_TYPE; 1333 cmd->key_action = cpu_to_le16(KEY_SET_ID); 1334 cmd->key_type = KEY_WEP; 1335 1336 ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0); 1337 if (ret < 0) { 1338 wl1271_warning("cmd set_default_wep_key failed: %d", ret); 1339 goto out; 1340 } 1341 1342 out: 1343 kfree(cmd); 1344 1345 return ret; 1346 } 1347 1348 int wl1271_cmd_set_sta_key(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1349 u16 action, u8 id, u8 key_type, 1350 u8 key_size, const u8 *key, const u8 *addr, 1351 u32 tx_seq_32, u16 tx_seq_16) 1352 { 1353 struct wl1271_cmd_set_keys *cmd; 1354 int ret = 0; 1355 1356 /* hlid might have already been deleted */ 1357 if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) 1358 return 0; 1359 1360 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1361 if (!cmd) { 1362 ret = -ENOMEM; 1363 goto out; 1364 } 1365 1366 cmd->hlid = wlvif->sta.hlid; 1367 1368 if (key_type == KEY_WEP) 1369 cmd->lid_key_type = WEP_DEFAULT_LID_TYPE; 1370 else if (is_broadcast_ether_addr(addr)) 1371 cmd->lid_key_type = BROADCAST_LID_TYPE; 1372 else 1373 cmd->lid_key_type = UNICAST_LID_TYPE; 1374 1375 cmd->key_action = cpu_to_le16(action); 1376 cmd->key_size = key_size; 1377 cmd->key_type = key_type; 1378 1379 cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16); 1380 cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32); 1381 1382 cmd->key_id = id; 1383 1384 if (key_type == KEY_TKIP) { 1385 /* 1386 * We get the key in the following form: 1387 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 1388 * but the target is expecting: 1389 * TKIP - RX MIC - TX MIC 1390 */ 1391 memcpy(cmd->key, key, 16); 1392 memcpy(cmd->key + 16, key + 24, 8); 1393 memcpy(cmd->key + 24, key + 16, 8); 1394 1395 } else { 1396 memcpy(cmd->key, key, key_size); 1397 } 1398 1399 wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd)); 1400 1401 ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0); 1402 if (ret < 0) { 1403 wl1271_warning("could not set keys"); 1404 goto out; 1405 } 1406 1407 out: 1408 kfree(cmd); 1409 1410 return ret; 1411 } 1412 1413 /* 1414 * TODO: merge with sta/ibss into 1 set_key function. 1415 * note there are slight diffs 1416 */ 1417 int wl1271_cmd_set_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1418 u16 action, u8 id, u8 key_type, 1419 u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32, 1420 u16 tx_seq_16) 1421 { 1422 struct wl1271_cmd_set_keys *cmd; 1423 int ret = 0; 1424 u8 lid_type; 1425 1426 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1427 if (!cmd) 1428 return -ENOMEM; 1429 1430 if (hlid == wlvif->ap.bcast_hlid) { 1431 if (key_type == KEY_WEP) 1432 lid_type = WEP_DEFAULT_LID_TYPE; 1433 else 1434 lid_type = BROADCAST_LID_TYPE; 1435 } else { 1436 lid_type = UNICAST_LID_TYPE; 1437 } 1438 1439 wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d" 1440 " hlid: %d", (int)action, (int)id, (int)lid_type, 1441 (int)key_type, (int)hlid); 1442 1443 cmd->lid_key_type = lid_type; 1444 cmd->hlid = hlid; 1445 cmd->key_action = cpu_to_le16(action); 1446 cmd->key_size = key_size; 1447 cmd->key_type = key_type; 1448 cmd->key_id = id; 1449 cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16); 1450 cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32); 1451 1452 if (key_type == KEY_TKIP) { 1453 /* 1454 * We get the key in the following form: 1455 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 1456 * but the target is expecting: 1457 * TKIP - RX MIC - TX MIC 1458 */ 1459 memcpy(cmd->key, key, 16); 1460 memcpy(cmd->key + 16, key + 24, 8); 1461 memcpy(cmd->key + 24, key + 16, 8); 1462 } else { 1463 memcpy(cmd->key, key, key_size); 1464 } 1465 1466 wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd)); 1467 1468 ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0); 1469 if (ret < 0) { 1470 wl1271_warning("could not set ap keys"); 1471 goto out; 1472 } 1473 1474 out: 1475 kfree(cmd); 1476 return ret; 1477 } 1478 1479 int wl12xx_cmd_set_peer_state(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1480 u8 hlid) 1481 { 1482 struct wl12xx_cmd_set_peer_state *cmd; 1483 int ret = 0; 1484 1485 wl1271_debug(DEBUG_CMD, "cmd set peer state (hlid=%d)", hlid); 1486 1487 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1488 if (!cmd) { 1489 ret = -ENOMEM; 1490 goto out; 1491 } 1492 1493 cmd->hlid = hlid; 1494 cmd->state = WL1271_CMD_STA_STATE_CONNECTED; 1495 1496 /* wmm param is valid only for station role */ 1497 if (wlvif->bss_type == BSS_TYPE_STA_BSS) 1498 cmd->wmm = wlvif->wmm_enabled; 1499 1500 ret = wl1271_cmd_send(wl, CMD_SET_PEER_STATE, cmd, sizeof(*cmd), 0); 1501 if (ret < 0) { 1502 wl1271_error("failed to send set peer state command"); 1503 goto out_free; 1504 } 1505 1506 out_free: 1507 kfree(cmd); 1508 1509 out: 1510 return ret; 1511 } 1512 1513 int wl12xx_cmd_add_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1514 struct ieee80211_sta *sta, u8 hlid) 1515 { 1516 struct wl12xx_cmd_add_peer *cmd; 1517 int i, ret; 1518 u32 sta_rates; 1519 1520 wl1271_debug(DEBUG_CMD, "cmd add peer %d", (int)hlid); 1521 1522 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1523 if (!cmd) { 1524 ret = -ENOMEM; 1525 goto out; 1526 } 1527 1528 memcpy(cmd->addr, sta->addr, ETH_ALEN); 1529 cmd->bss_index = WL1271_AP_BSS_INDEX; 1530 cmd->aid = sta->aid; 1531 cmd->hlid = hlid; 1532 cmd->sp_len = sta->max_sp; 1533 cmd->wmm = sta->wme ? 1 : 0; 1534 cmd->session_id = wl->session_ids[hlid]; 1535 cmd->role_id = wlvif->role_id; 1536 1537 for (i = 0; i < NUM_ACCESS_CATEGORIES_COPY; i++) 1538 if (sta->wme && (sta->uapsd_queues & BIT(i))) 1539 cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] = 1540 WL1271_PSD_UPSD_TRIGGER; 1541 else 1542 cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] = 1543 WL1271_PSD_LEGACY; 1544 1545 1546 sta_rates = sta->supp_rates[wlvif->band]; 1547 if (sta->ht_cap.ht_supported) 1548 sta_rates |= 1549 (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET) | 1550 (sta->ht_cap.mcs.rx_mask[1] << HW_MIMO_RATES_OFFSET); 1551 1552 cmd->supported_rates = 1553 cpu_to_le32(wl1271_tx_enabled_rates_get(wl, sta_rates, 1554 wlvif->band)); 1555 1556 wl1271_debug(DEBUG_CMD, "new peer rates=0x%x queues=0x%x", 1557 cmd->supported_rates, sta->uapsd_queues); 1558 1559 ret = wl1271_cmd_send(wl, CMD_ADD_PEER, cmd, sizeof(*cmd), 0); 1560 if (ret < 0) { 1561 wl1271_error("failed to initiate cmd add peer"); 1562 goto out_free; 1563 } 1564 1565 out_free: 1566 kfree(cmd); 1567 1568 out: 1569 return ret; 1570 } 1571 1572 int wl12xx_cmd_remove_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1573 u8 hlid) 1574 { 1575 struct wl12xx_cmd_remove_peer *cmd; 1576 int ret; 1577 bool timeout = false; 1578 1579 wl1271_debug(DEBUG_CMD, "cmd remove peer %d", (int)hlid); 1580 1581 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1582 if (!cmd) { 1583 ret = -ENOMEM; 1584 goto out; 1585 } 1586 1587 cmd->hlid = hlid; 1588 /* We never send a deauth, mac80211 is in charge of this */ 1589 cmd->reason_opcode = 0; 1590 cmd->send_deauth_flag = 0; 1591 cmd->role_id = wlvif->role_id; 1592 1593 ret = wl1271_cmd_send(wl, CMD_REMOVE_PEER, cmd, sizeof(*cmd), 0); 1594 if (ret < 0) { 1595 wl1271_error("failed to initiate cmd remove peer"); 1596 goto out_free; 1597 } 1598 1599 ret = wl->ops->wait_for_event(wl, 1600 WLCORE_EVENT_PEER_REMOVE_COMPLETE, 1601 &timeout); 1602 1603 /* 1604 * We are ok with a timeout here. The event is sometimes not sent 1605 * due to a firmware bug. In case of another error (like SDIO timeout) 1606 * queue a recovery. 1607 */ 1608 if (ret) 1609 wl12xx_queue_recovery_work(wl); 1610 1611 out_free: 1612 kfree(cmd); 1613 1614 out: 1615 return ret; 1616 } 1617 1618 static int wlcore_get_reg_conf_ch_idx(enum ieee80211_band band, u16 ch) 1619 { 1620 /* 1621 * map the given band/channel to the respective predefined 1622 * bit expected by the fw 1623 */ 1624 switch (band) { 1625 case IEEE80211_BAND_2GHZ: 1626 /* channels 1..14 are mapped to 0..13 */ 1627 if (ch >= 1 && ch <= 14) 1628 return ch - 1; 1629 break; 1630 case IEEE80211_BAND_5GHZ: 1631 switch (ch) { 1632 case 8 ... 16: 1633 /* channels 8,12,16 are mapped to 18,19,20 */ 1634 return 18 + (ch-8)/4; 1635 case 34 ... 48: 1636 /* channels 34,36..48 are mapped to 21..28 */ 1637 return 21 + (ch-34)/2; 1638 case 52 ... 64: 1639 /* channels 52,56..64 are mapped to 29..32 */ 1640 return 29 + (ch-52)/4; 1641 case 100 ... 140: 1642 /* channels 100,104..140 are mapped to 33..43 */ 1643 return 33 + (ch-100)/4; 1644 case 149 ... 165: 1645 /* channels 149,153..165 are mapped to 44..48 */ 1646 return 44 + (ch-149)/4; 1647 default: 1648 break; 1649 } 1650 break; 1651 default: 1652 break; 1653 } 1654 1655 wl1271_error("%s: unknown band/channel: %d/%d", __func__, band, ch); 1656 return -1; 1657 } 1658 1659 void wlcore_set_pending_regdomain_ch(struct wl1271 *wl, u16 channel, 1660 enum ieee80211_band band) 1661 { 1662 int ch_bit_idx = 0; 1663 1664 if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF)) 1665 return; 1666 1667 ch_bit_idx = wlcore_get_reg_conf_ch_idx(band, channel); 1668 1669 if (ch_bit_idx >= 0 && ch_bit_idx <= WL1271_MAX_CHANNELS) 1670 set_bit(ch_bit_idx, (long *)wl->reg_ch_conf_pending); 1671 } 1672 1673 int wlcore_cmd_regdomain_config_locked(struct wl1271 *wl) 1674 { 1675 struct wl12xx_cmd_regdomain_dfs_config *cmd = NULL; 1676 int ret = 0, i, b, ch_bit_idx; 1677 struct ieee80211_channel *channel; 1678 u32 tmp_ch_bitmap[2]; 1679 u16 ch; 1680 struct wiphy *wiphy = wl->hw->wiphy; 1681 struct ieee80211_supported_band *band; 1682 bool timeout = false; 1683 1684 if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF)) 1685 return 0; 1686 1687 wl1271_debug(DEBUG_CMD, "cmd reg domain config"); 1688 1689 memset(tmp_ch_bitmap, 0, sizeof(tmp_ch_bitmap)); 1690 1691 for (b = IEEE80211_BAND_2GHZ; b <= IEEE80211_BAND_5GHZ; b++) { 1692 band = wiphy->bands[b]; 1693 for (i = 0; i < band->n_channels; i++) { 1694 channel = &band->channels[i]; 1695 ch = channel->hw_value; 1696 1697 if (channel->flags & (IEEE80211_CHAN_DISABLED | 1698 IEEE80211_CHAN_RADAR | 1699 IEEE80211_CHAN_NO_IR)) 1700 continue; 1701 1702 ch_bit_idx = wlcore_get_reg_conf_ch_idx(b, ch); 1703 if (ch_bit_idx < 0) 1704 continue; 1705 1706 set_bit(ch_bit_idx, (long *)tmp_ch_bitmap); 1707 } 1708 } 1709 1710 tmp_ch_bitmap[0] |= wl->reg_ch_conf_pending[0]; 1711 tmp_ch_bitmap[1] |= wl->reg_ch_conf_pending[1]; 1712 1713 if (!memcmp(tmp_ch_bitmap, wl->reg_ch_conf_last, sizeof(tmp_ch_bitmap))) 1714 goto out; 1715 1716 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1717 if (!cmd) { 1718 ret = -ENOMEM; 1719 goto out; 1720 } 1721 1722 cmd->ch_bit_map1 = cpu_to_le32(tmp_ch_bitmap[0]); 1723 cmd->ch_bit_map2 = cpu_to_le32(tmp_ch_bitmap[1]); 1724 1725 wl1271_debug(DEBUG_CMD, 1726 "cmd reg domain bitmap1: 0x%08x, bitmap2: 0x%08x", 1727 cmd->ch_bit_map1, cmd->ch_bit_map2); 1728 1729 ret = wl1271_cmd_send(wl, CMD_DFS_CHANNEL_CONFIG, cmd, sizeof(*cmd), 0); 1730 if (ret < 0) { 1731 wl1271_error("failed to send reg domain dfs config"); 1732 goto out; 1733 } 1734 1735 ret = wl->ops->wait_for_event(wl, 1736 WLCORE_EVENT_DFS_CONFIG_COMPLETE, 1737 &timeout); 1738 if (ret < 0 || timeout) { 1739 wl1271_error("reg domain conf %serror", 1740 timeout ? "completion " : ""); 1741 ret = timeout ? -ETIMEDOUT : ret; 1742 goto out; 1743 } 1744 1745 memcpy(wl->reg_ch_conf_last, tmp_ch_bitmap, sizeof(tmp_ch_bitmap)); 1746 memset(wl->reg_ch_conf_pending, 0, sizeof(wl->reg_ch_conf_pending)); 1747 1748 out: 1749 kfree(cmd); 1750 return ret; 1751 } 1752 1753 int wl12xx_cmd_config_fwlog(struct wl1271 *wl) 1754 { 1755 struct wl12xx_cmd_config_fwlog *cmd; 1756 int ret = 0; 1757 1758 wl1271_debug(DEBUG_CMD, "cmd config firmware logger"); 1759 1760 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1761 if (!cmd) { 1762 ret = -ENOMEM; 1763 goto out; 1764 } 1765 1766 cmd->logger_mode = wl->conf.fwlog.mode; 1767 cmd->log_severity = wl->conf.fwlog.severity; 1768 cmd->timestamp = wl->conf.fwlog.timestamp; 1769 cmd->output = wl->conf.fwlog.output; 1770 cmd->threshold = wl->conf.fwlog.threshold; 1771 1772 ret = wl1271_cmd_send(wl, CMD_CONFIG_FWLOGGER, cmd, sizeof(*cmd), 0); 1773 if (ret < 0) { 1774 wl1271_error("failed to send config firmware logger command"); 1775 goto out_free; 1776 } 1777 1778 out_free: 1779 kfree(cmd); 1780 1781 out: 1782 return ret; 1783 } 1784 1785 int wl12xx_cmd_start_fwlog(struct wl1271 *wl) 1786 { 1787 struct wl12xx_cmd_start_fwlog *cmd; 1788 int ret = 0; 1789 1790 wl1271_debug(DEBUG_CMD, "cmd start firmware logger"); 1791 1792 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1793 if (!cmd) { 1794 ret = -ENOMEM; 1795 goto out; 1796 } 1797 1798 ret = wl1271_cmd_send(wl, CMD_START_FWLOGGER, cmd, sizeof(*cmd), 0); 1799 if (ret < 0) { 1800 wl1271_error("failed to send start firmware logger command"); 1801 goto out_free; 1802 } 1803 1804 out_free: 1805 kfree(cmd); 1806 1807 out: 1808 return ret; 1809 } 1810 1811 int wl12xx_cmd_stop_fwlog(struct wl1271 *wl) 1812 { 1813 struct wl12xx_cmd_stop_fwlog *cmd; 1814 int ret = 0; 1815 1816 wl1271_debug(DEBUG_CMD, "cmd stop firmware logger"); 1817 1818 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1819 if (!cmd) { 1820 ret = -ENOMEM; 1821 goto out; 1822 } 1823 1824 ret = wl1271_cmd_send(wl, CMD_STOP_FWLOGGER, cmd, sizeof(*cmd), 0); 1825 if (ret < 0) { 1826 wl1271_error("failed to send stop firmware logger command"); 1827 goto out_free; 1828 } 1829 1830 out_free: 1831 kfree(cmd); 1832 1833 out: 1834 return ret; 1835 } 1836 1837 static int wl12xx_cmd_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1838 u8 role_id, enum ieee80211_band band, u8 channel) 1839 { 1840 struct wl12xx_cmd_roc *cmd; 1841 int ret = 0; 1842 1843 wl1271_debug(DEBUG_CMD, "cmd roc %d (%d)", channel, role_id); 1844 1845 if (WARN_ON(role_id == WL12XX_INVALID_ROLE_ID)) 1846 return -EINVAL; 1847 1848 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1849 if (!cmd) { 1850 ret = -ENOMEM; 1851 goto out; 1852 } 1853 1854 cmd->role_id = role_id; 1855 cmd->channel = channel; 1856 switch (band) { 1857 case IEEE80211_BAND_2GHZ: 1858 cmd->band = WLCORE_BAND_2_4GHZ; 1859 break; 1860 case IEEE80211_BAND_5GHZ: 1861 cmd->band = WLCORE_BAND_5GHZ; 1862 break; 1863 default: 1864 wl1271_error("roc - unknown band: %d", (int)wlvif->band); 1865 ret = -EINVAL; 1866 goto out_free; 1867 } 1868 1869 1870 ret = wl1271_cmd_send(wl, CMD_REMAIN_ON_CHANNEL, cmd, sizeof(*cmd), 0); 1871 if (ret < 0) { 1872 wl1271_error("failed to send ROC command"); 1873 goto out_free; 1874 } 1875 1876 out_free: 1877 kfree(cmd); 1878 1879 out: 1880 return ret; 1881 } 1882 1883 static int wl12xx_cmd_croc(struct wl1271 *wl, u8 role_id) 1884 { 1885 struct wl12xx_cmd_croc *cmd; 1886 int ret = 0; 1887 1888 wl1271_debug(DEBUG_CMD, "cmd croc (%d)", role_id); 1889 1890 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1891 if (!cmd) { 1892 ret = -ENOMEM; 1893 goto out; 1894 } 1895 cmd->role_id = role_id; 1896 1897 ret = wl1271_cmd_send(wl, CMD_CANCEL_REMAIN_ON_CHANNEL, cmd, 1898 sizeof(*cmd), 0); 1899 if (ret < 0) { 1900 wl1271_error("failed to send ROC command"); 1901 goto out_free; 1902 } 1903 1904 out_free: 1905 kfree(cmd); 1906 1907 out: 1908 return ret; 1909 } 1910 1911 int wl12xx_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 role_id, 1912 enum ieee80211_band band, u8 channel) 1913 { 1914 int ret = 0; 1915 1916 if (WARN_ON(test_bit(role_id, wl->roc_map))) 1917 return 0; 1918 1919 ret = wl12xx_cmd_roc(wl, wlvif, role_id, band, channel); 1920 if (ret < 0) 1921 goto out; 1922 1923 __set_bit(role_id, wl->roc_map); 1924 out: 1925 return ret; 1926 } 1927 1928 int wl12xx_croc(struct wl1271 *wl, u8 role_id) 1929 { 1930 int ret = 0; 1931 1932 if (WARN_ON(!test_bit(role_id, wl->roc_map))) 1933 return 0; 1934 1935 ret = wl12xx_cmd_croc(wl, role_id); 1936 if (ret < 0) 1937 goto out; 1938 1939 __clear_bit(role_id, wl->roc_map); 1940 1941 /* 1942 * Rearm the tx watchdog when removing the last ROC. This prevents 1943 * recoveries due to just finished ROCs - when Tx hasn't yet had 1944 * a chance to get out. 1945 */ 1946 if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES) 1947 wl12xx_rearm_tx_watchdog_locked(wl); 1948 out: 1949 return ret; 1950 } 1951 1952 int wl12xx_cmd_stop_channel_switch(struct wl1271 *wl, struct wl12xx_vif *wlvif) 1953 { 1954 struct wl12xx_cmd_stop_channel_switch *cmd; 1955 int ret; 1956 1957 wl1271_debug(DEBUG_ACX, "cmd stop channel switch"); 1958 1959 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 1960 if (!cmd) { 1961 ret = -ENOMEM; 1962 goto out; 1963 } 1964 1965 cmd->role_id = wlvif->role_id; 1966 1967 ret = wl1271_cmd_send(wl, CMD_STOP_CHANNEL_SWICTH, cmd, sizeof(*cmd), 0); 1968 if (ret < 0) { 1969 wl1271_error("failed to stop channel switch command"); 1970 goto out_free; 1971 } 1972 1973 out_free: 1974 kfree(cmd); 1975 1976 out: 1977 return ret; 1978 } 1979 1980 /* start dev role and roc on its channel */ 1981 int wl12xx_start_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1982 enum ieee80211_band band, int channel) 1983 { 1984 int ret; 1985 1986 if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS || 1987 wlvif->bss_type == BSS_TYPE_IBSS))) 1988 return -EINVAL; 1989 1990 ret = wl12xx_cmd_role_enable(wl, 1991 wl12xx_wlvif_to_vif(wlvif)->addr, 1992 WL1271_ROLE_DEVICE, 1993 &wlvif->dev_role_id); 1994 if (ret < 0) 1995 goto out; 1996 1997 ret = wl12xx_cmd_role_start_dev(wl, wlvif, band, channel); 1998 if (ret < 0) 1999 goto out_disable; 2000 2001 ret = wl12xx_roc(wl, wlvif, wlvif->dev_role_id, band, channel); 2002 if (ret < 0) 2003 goto out_stop; 2004 2005 return 0; 2006 2007 out_stop: 2008 wl12xx_cmd_role_stop_dev(wl, wlvif); 2009 out_disable: 2010 wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id); 2011 out: 2012 return ret; 2013 } 2014 2015 /* croc dev hlid, and stop the role */ 2016 int wl12xx_stop_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif) 2017 { 2018 int ret; 2019 2020 if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS || 2021 wlvif->bss_type == BSS_TYPE_IBSS))) 2022 return -EINVAL; 2023 2024 /* flush all pending packets */ 2025 ret = wlcore_tx_work_locked(wl); 2026 if (ret < 0) 2027 goto out; 2028 2029 if (test_bit(wlvif->dev_role_id, wl->roc_map)) { 2030 ret = wl12xx_croc(wl, wlvif->dev_role_id); 2031 if (ret < 0) 2032 goto out; 2033 } 2034 2035 ret = wl12xx_cmd_role_stop_dev(wl, wlvif); 2036 if (ret < 0) 2037 goto out; 2038 2039 ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id); 2040 if (ret < 0) 2041 goto out; 2042 2043 out: 2044 return ret; 2045 } 2046