1 /* 2 * Copyright (c) 2012 Qualcomm Atheros, Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/etherdevice.h> 18 #include <linux/if_arp.h> 19 20 #include "wil6210.h" 21 #include "txrx.h" 22 #include "wmi.h" 23 #include "trace.h" 24 25 /** 26 * WMI event receiving - theory of operations 27 * 28 * When firmware about to report WMI event, it fills memory area 29 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for 30 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler. 31 * 32 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the 33 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up 34 * and handles events within the @wmi_event_worker. Every event get detached 35 * from list, processed and deleted. 36 * 37 * Purpose for this mechanism is to release IRQ thread; otherwise, 38 * if WMI event handling involves another WMI command flow, this 2-nd flow 39 * won't be completed because of blocked IRQ thread. 40 */ 41 42 /** 43 * Addressing - theory of operations 44 * 45 * There are several buses present on the WIL6210 card. 46 * Same memory areas are visible at different address on 47 * the different busses. There are 3 main bus masters: 48 * - MAC CPU (ucode) 49 * - User CPU (firmware) 50 * - AHB (host) 51 * 52 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing 53 * AHB addresses starting from 0x880000 54 * 55 * Internally, firmware uses addresses that allows faster access but 56 * are invisible from the host. To read from these addresses, alternative 57 * AHB address must be used. 58 * 59 * Memory mapping 60 * Linker address PCI/Host address 61 * 0x880000 .. 0xa80000 2Mb BAR0 62 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM 63 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH 64 */ 65 66 /** 67 * @fw_mapping provides memory remapping table 68 */ 69 static const struct { 70 u32 from; /* linker address - from, inclusive */ 71 u32 to; /* linker address - to, exclusive */ 72 u32 host; /* PCI/Host address - BAR0 + 0x880000 */ 73 } fw_mapping[] = { 74 {0x000000, 0x040000, 0x8c0000}, /* FW code RAM 256k */ 75 {0x800000, 0x808000, 0x900000}, /* FW data RAM 32k */ 76 {0x840000, 0x860000, 0x908000}, /* peripheral data RAM 128k/96k used */ 77 {0x880000, 0x88a000, 0x880000}, /* various RGF */ 78 {0x8c0000, 0x949000, 0x8c0000}, /* trivial mapping for upper area */ 79 /* 80 * 920000..930000 ucode code RAM 81 * 930000..932000 ucode data RAM 82 * 932000..949000 back-door debug data 83 */ 84 }; 85 86 /** 87 * return AHB address for given firmware/ucode internal (linker) address 88 * @x - internal address 89 * If address have no valid AHB mapping, return 0 90 */ 91 static u32 wmi_addr_remap(u32 x) 92 { 93 uint i; 94 95 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) { 96 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to)) 97 return x + fw_mapping[i].host - fw_mapping[i].from; 98 } 99 100 return 0; 101 } 102 103 /** 104 * Check address validity for WMI buffer; remap if needed 105 * @ptr - internal (linker) fw/ucode address 106 * 107 * Valid buffer should be DWORD aligned 108 * 109 * return address for accessing buffer from the host; 110 * if buffer is not valid, return NULL. 111 */ 112 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_) 113 { 114 u32 off; 115 u32 ptr = le32_to_cpu(ptr_); 116 117 if (ptr % 4) 118 return NULL; 119 120 ptr = wmi_addr_remap(ptr); 121 if (ptr < WIL6210_FW_HOST_OFF) 122 return NULL; 123 124 off = HOSTADDR(ptr); 125 if (off > WIL6210_MEM_SIZE - 4) 126 return NULL; 127 128 return wil->csr + off; 129 } 130 131 /** 132 * Check address validity 133 */ 134 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr) 135 { 136 u32 off; 137 138 if (ptr % 4) 139 return NULL; 140 141 if (ptr < WIL6210_FW_HOST_OFF) 142 return NULL; 143 144 off = HOSTADDR(ptr); 145 if (off > WIL6210_MEM_SIZE - 4) 146 return NULL; 147 148 return wil->csr + off; 149 } 150 151 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr, 152 struct wil6210_mbox_hdr *hdr) 153 { 154 void __iomem *src = wmi_buffer(wil, ptr); 155 if (!src) 156 return -EINVAL; 157 158 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr)); 159 160 return 0; 161 } 162 163 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len) 164 { 165 struct { 166 struct wil6210_mbox_hdr hdr; 167 struct wil6210_mbox_hdr_wmi wmi; 168 } __packed cmd = { 169 .hdr = { 170 .type = WIL_MBOX_HDR_TYPE_WMI, 171 .flags = 0, 172 .len = cpu_to_le16(sizeof(cmd.wmi) + len), 173 }, 174 .wmi = { 175 .mid = 0, 176 .id = cpu_to_le16(cmdid), 177 }, 178 }; 179 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx; 180 struct wil6210_mbox_ring_desc d_head; 181 u32 next_head; 182 void __iomem *dst; 183 void __iomem *head = wmi_addr(wil, r->head); 184 uint retry; 185 186 if (sizeof(cmd) + len > r->entry_size) { 187 wil_err(wil, "WMI size too large: %d bytes, max is %d\n", 188 (int)(sizeof(cmd) + len), r->entry_size); 189 return -ERANGE; 190 } 191 192 might_sleep(); 193 194 if (!test_bit(wil_status_fwready, &wil->status)) { 195 wil_err(wil, "WMI: cannot send command while FW not ready\n"); 196 return -EAGAIN; 197 } 198 199 if (!head) { 200 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head); 201 return -EINVAL; 202 } 203 /* read Tx head till it is not busy */ 204 for (retry = 5; retry > 0; retry--) { 205 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head)); 206 if (d_head.sync == 0) 207 break; 208 msleep(20); 209 } 210 if (d_head.sync != 0) { 211 wil_err(wil, "WMI head busy\n"); 212 return -EBUSY; 213 } 214 /* next head */ 215 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size); 216 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head); 217 /* wait till FW finish with previous command */ 218 for (retry = 5; retry > 0; retry--) { 219 r->tail = ioread32(wil->csr + HOST_MBOX + 220 offsetof(struct wil6210_mbox_ctl, tx.tail)); 221 if (next_head != r->tail) 222 break; 223 msleep(20); 224 } 225 if (next_head == r->tail) { 226 wil_err(wil, "WMI ring full\n"); 227 return -EBUSY; 228 } 229 dst = wmi_buffer(wil, d_head.addr); 230 if (!dst) { 231 wil_err(wil, "invalid WMI buffer: 0x%08x\n", 232 le32_to_cpu(d_head.addr)); 233 return -EINVAL; 234 } 235 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq); 236 /* set command */ 237 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len); 238 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd, 239 sizeof(cmd), true); 240 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf, 241 len, true); 242 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd)); 243 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len); 244 /* mark entry as full */ 245 iowrite32(1, wil->csr + HOSTADDR(r->head) + 246 offsetof(struct wil6210_mbox_ring_desc, sync)); 247 /* advance next ptr */ 248 iowrite32(r->head = next_head, wil->csr + HOST_MBOX + 249 offsetof(struct wil6210_mbox_ctl, tx.head)); 250 251 trace_wil6210_wmi_cmd(&cmd.wmi, buf, len); 252 253 /* interrupt to FW */ 254 iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT); 255 256 return 0; 257 } 258 259 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len) 260 { 261 int rc; 262 263 mutex_lock(&wil->wmi_mutex); 264 rc = __wmi_send(wil, cmdid, buf, len); 265 mutex_unlock(&wil->wmi_mutex); 266 267 return rc; 268 } 269 270 /*=== Event handlers ===*/ 271 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len) 272 { 273 struct net_device *ndev = wil_to_ndev(wil); 274 struct wireless_dev *wdev = wil->wdev; 275 struct wmi_ready_event *evt = d; 276 wil->fw_version = le32_to_cpu(evt->sw_version); 277 wil->n_mids = evt->numof_additional_mids; 278 279 wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version, 280 evt->mac, wil->n_mids); 281 282 if (!is_valid_ether_addr(ndev->dev_addr)) { 283 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN); 284 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN); 285 } 286 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version), 287 "%d", wil->fw_version); 288 } 289 290 static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d, 291 int len) 292 { 293 wil_dbg_wmi(wil, "WMI: got FW ready event\n"); 294 295 set_bit(wil_status_fwready, &wil->status); 296 /* reuse wmi_ready for the firmware ready indication */ 297 complete(&wil->wmi_ready); 298 } 299 300 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len) 301 { 302 struct wmi_rx_mgmt_packet_event *data = d; 303 struct wiphy *wiphy = wil_to_wiphy(wil); 304 struct ieee80211_mgmt *rx_mgmt_frame = 305 (struct ieee80211_mgmt *)data->payload; 306 int ch_no = data->info.channel+1; 307 u32 freq = ieee80211_channel_to_frequency(ch_no, 308 IEEE80211_BAND_60GHZ); 309 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq); 310 s32 signal = data->info.sqi; 311 __le16 fc = rx_mgmt_frame->frame_control; 312 u32 d_len = le32_to_cpu(data->info.len); 313 u16 d_status = le16_to_cpu(data->info.status); 314 315 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d SQI %d%%\n", 316 data->info.channel, data->info.mcs, data->info.snr, 317 data->info.sqi); 318 wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len, 319 le16_to_cpu(fc)); 320 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n", 321 data->info.qid, data->info.mid, data->info.cid); 322 323 if (!channel) { 324 wil_err(wil, "Frame on unsupported channel\n"); 325 return; 326 } 327 328 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) { 329 struct cfg80211_bss *bss; 330 331 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame, 332 d_len, signal, GFP_KERNEL); 333 if (bss) { 334 wil_dbg_wmi(wil, "Added BSS %pM\n", 335 rx_mgmt_frame->bssid); 336 cfg80211_put_bss(wiphy, bss); 337 } else { 338 wil_err(wil, "cfg80211_inform_bss() failed\n"); 339 } 340 } else { 341 cfg80211_rx_mgmt(wil->wdev, freq, signal, 342 (void *)rx_mgmt_frame, d_len, 0, GFP_KERNEL); 343 } 344 } 345 346 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id, 347 void *d, int len) 348 { 349 if (wil->scan_request) { 350 struct wmi_scan_complete_event *data = d; 351 bool aborted = (data->status != WMI_SCAN_SUCCESS); 352 353 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status); 354 del_timer_sync(&wil->scan_timer); 355 cfg80211_scan_done(wil->scan_request, aborted); 356 wil->scan_request = NULL; 357 } else { 358 wil_err(wil, "SCAN_COMPLETE while not scanning\n"); 359 } 360 } 361 362 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len) 363 { 364 struct net_device *ndev = wil_to_ndev(wil); 365 struct wireless_dev *wdev = wil->wdev; 366 struct wmi_connect_event *evt = d; 367 int ch; /* channel number */ 368 struct station_info sinfo; 369 u8 *assoc_req_ie, *assoc_resp_ie; 370 size_t assoc_req_ielen, assoc_resp_ielen; 371 /* capinfo(u16) + listen_interval(u16) + IEs */ 372 const size_t assoc_req_ie_offset = sizeof(u16) * 2; 373 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */ 374 const size_t assoc_resp_ie_offset = sizeof(u16) * 3; 375 376 if (len < sizeof(*evt)) { 377 wil_err(wil, "Connect event too short : %d bytes\n", len); 378 return; 379 } 380 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len + 381 evt->assoc_resp_len) { 382 wil_err(wil, 383 "Connect event corrupted : %d != %d + %d + %d + %d\n", 384 len, (int)sizeof(*evt), evt->beacon_ie_len, 385 evt->assoc_req_len, evt->assoc_resp_len); 386 return; 387 } 388 if (evt->cid >= WIL6210_MAX_CID) { 389 wil_err(wil, "Connect CID invalid : %d\n", evt->cid); 390 return; 391 } 392 393 ch = evt->channel + 1; 394 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n", 395 evt->bssid, ch, evt->cid); 396 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1, 397 evt->assoc_info, len - sizeof(*evt), true); 398 399 /* figure out IE's */ 400 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len + 401 assoc_req_ie_offset]; 402 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset; 403 if (evt->assoc_req_len <= assoc_req_ie_offset) { 404 assoc_req_ie = NULL; 405 assoc_req_ielen = 0; 406 } 407 408 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len + 409 evt->assoc_req_len + 410 assoc_resp_ie_offset]; 411 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset; 412 if (evt->assoc_resp_len <= assoc_resp_ie_offset) { 413 assoc_resp_ie = NULL; 414 assoc_resp_ielen = 0; 415 } 416 417 if ((wdev->iftype == NL80211_IFTYPE_STATION) || 418 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) { 419 if (!test_bit(wil_status_fwconnecting, &wil->status)) { 420 wil_err(wil, "Not in connecting state\n"); 421 return; 422 } 423 del_timer_sync(&wil->connect_timer); 424 cfg80211_connect_result(ndev, evt->bssid, 425 assoc_req_ie, assoc_req_ielen, 426 assoc_resp_ie, assoc_resp_ielen, 427 WLAN_STATUS_SUCCESS, GFP_KERNEL); 428 429 } else if ((wdev->iftype == NL80211_IFTYPE_AP) || 430 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { 431 memset(&sinfo, 0, sizeof(sinfo)); 432 433 sinfo.generation = wil->sinfo_gen++; 434 435 if (assoc_req_ie) { 436 sinfo.assoc_req_ies = assoc_req_ie; 437 sinfo.assoc_req_ies_len = assoc_req_ielen; 438 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 439 } 440 441 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL); 442 } 443 clear_bit(wil_status_fwconnecting, &wil->status); 444 set_bit(wil_status_fwconnected, &wil->status); 445 446 /* FIXME FW can transmit only ucast frames to peer */ 447 /* FIXME real ring_id instead of hard coded 0 */ 448 memcpy(wil->sta[evt->cid].addr, evt->bssid, ETH_ALEN); 449 wil->sta[evt->cid].status = wil_sta_conn_pending; 450 451 wil->pending_connect_cid = evt->cid; 452 queue_work(wil->wmi_wq_conn, &wil->connect_worker); 453 } 454 455 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id, 456 void *d, int len) 457 { 458 struct wmi_disconnect_event *evt = d; 459 460 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n", 461 evt->bssid, 462 evt->protocol_reason_status, evt->disconnect_reason); 463 464 wil->sinfo_gen++; 465 466 mutex_lock(&wil->mutex); 467 wil6210_disconnect(wil, evt->bssid); 468 mutex_unlock(&wil->mutex); 469 } 470 471 static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len) 472 { 473 struct wmi_notify_req_done_event *evt = d; 474 475 if (len < sizeof(*evt)) { 476 wil_err(wil, "Short NOTIFY event\n"); 477 return; 478 } 479 480 wil->stats.tsf = le64_to_cpu(evt->tsf); 481 wil->stats.snr = le32_to_cpu(evt->snr_val); 482 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs); 483 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector); 484 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector); 485 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector); 486 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector); 487 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n" 488 "BF status 0x%08x SNR 0x%08x SQI %d%%\n" 489 "Tx Tpt %d goodput %d Rx goodput %d\n" 490 "Sectors(rx:tx) my %d:%d peer %d:%d\n", 491 wil->stats.bf_mcs, wil->stats.tsf, evt->status, 492 wil->stats.snr, evt->sqi, le32_to_cpu(evt->tx_tpt), 493 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput), 494 wil->stats.my_rx_sector, wil->stats.my_tx_sector, 495 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector); 496 } 497 498 /* 499 * Firmware reports EAPOL frame using WME event. 500 * Reconstruct Ethernet frame and deliver it via normal Rx 501 */ 502 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id, 503 void *d, int len) 504 { 505 struct net_device *ndev = wil_to_ndev(wil); 506 struct wmi_eapol_rx_event *evt = d; 507 u16 eapol_len = le16_to_cpu(evt->eapol_len); 508 int sz = eapol_len + ETH_HLEN; 509 struct sk_buff *skb; 510 struct ethhdr *eth; 511 int cid; 512 struct wil_net_stats *stats = NULL; 513 514 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len, 515 evt->src_mac); 516 517 cid = wil_find_cid(wil, evt->src_mac); 518 if (cid >= 0) 519 stats = &wil->sta[cid].stats; 520 521 if (eapol_len > 196) { /* TODO: revisit size limit */ 522 wil_err(wil, "EAPOL too large\n"); 523 return; 524 } 525 526 skb = alloc_skb(sz, GFP_KERNEL); 527 if (!skb) { 528 wil_err(wil, "Failed to allocate skb\n"); 529 return; 530 } 531 532 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN); 533 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN); 534 memcpy(eth->h_source, evt->src_mac, ETH_ALEN); 535 eth->h_proto = cpu_to_be16(ETH_P_PAE); 536 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len); 537 skb->protocol = eth_type_trans(skb, ndev); 538 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) { 539 ndev->stats.rx_packets++; 540 ndev->stats.rx_bytes += sz; 541 if (stats) { 542 stats->rx_packets++; 543 stats->rx_bytes += sz; 544 } 545 } else { 546 ndev->stats.rx_dropped++; 547 if (stats) 548 stats->rx_dropped++; 549 } 550 } 551 552 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len) 553 { 554 struct net_device *ndev = wil_to_ndev(wil); 555 struct wmi_data_port_open_event *evt = d; 556 u8 cid = evt->cid; 557 558 wil_dbg_wmi(wil, "Link UP for CID %d\n", cid); 559 560 if (cid >= ARRAY_SIZE(wil->sta)) { 561 wil_err(wil, "Link UP for invalid CID %d\n", cid); 562 return; 563 } 564 565 wil->sta[cid].data_port_open = true; 566 netif_carrier_on(ndev); 567 } 568 569 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len) 570 { 571 struct net_device *ndev = wil_to_ndev(wil); 572 struct wmi_wbe_link_down_event *evt = d; 573 u8 cid = evt->cid; 574 575 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n", 576 cid, le32_to_cpu(evt->reason)); 577 578 if (cid >= ARRAY_SIZE(wil->sta)) { 579 wil_err(wil, "Link DOWN for invalid CID %d\n", cid); 580 return; 581 } 582 583 wil->sta[cid].data_port_open = false; 584 netif_carrier_off(ndev); 585 } 586 587 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d, 588 int len) 589 { 590 struct wmi_vring_ba_status_event *evt = d; 591 struct wil_sta_info *sta; 592 uint i, cid; 593 594 /* TODO: use Rx BA status, not Tx one */ 595 596 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n", 597 evt->ringid, 598 evt->status == WMI_BA_AGREED ? "OK" : "N/A", 599 evt->agg_wsize, __le16_to_cpu(evt->ba_timeout)); 600 601 if (evt->ringid >= WIL6210_MAX_TX_RINGS) { 602 wil_err(wil, "invalid ring id %d\n", evt->ringid); 603 return; 604 } 605 606 cid = wil->vring2cid_tid[evt->ringid][0]; 607 if (cid >= WIL6210_MAX_CID) { 608 wil_err(wil, "invalid CID %d for vring %d\n", cid, evt->ringid); 609 return; 610 } 611 612 sta = &wil->sta[cid]; 613 if (sta->status == wil_sta_unused) { 614 wil_err(wil, "CID %d unused\n", cid); 615 return; 616 } 617 618 wil_dbg_wmi(wil, "BACK for CID %d %pM\n", cid, sta->addr); 619 for (i = 0; i < WIL_STA_TID_NUM; i++) { 620 struct wil_tid_ampdu_rx *r = sta->tid_rx[i]; 621 sta->tid_rx[i] = NULL; 622 wil_tid_ampdu_rx_free(wil, r); 623 if ((evt->status == WMI_BA_AGREED) && evt->agg_wsize) 624 sta->tid_rx[i] = wil_tid_ampdu_rx_alloc(wil, 625 evt->agg_wsize, 0); 626 } 627 } 628 629 static const struct { 630 int eventid; 631 void (*handler)(struct wil6210_priv *wil, int eventid, 632 void *data, int data_len); 633 } wmi_evt_handlers[] = { 634 {WMI_READY_EVENTID, wmi_evt_ready}, 635 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready}, 636 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt}, 637 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete}, 638 {WMI_CONNECT_EVENTID, wmi_evt_connect}, 639 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect}, 640 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify}, 641 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx}, 642 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup}, 643 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown}, 644 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status}, 645 }; 646 647 /* 648 * Run in IRQ context 649 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev 650 * that will be eventually handled by the @wmi_event_worker in the thread 651 * context of thread "wil6210_wmi" 652 */ 653 void wmi_recv_cmd(struct wil6210_priv *wil) 654 { 655 struct wil6210_mbox_ring_desc d_tail; 656 struct wil6210_mbox_hdr hdr; 657 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx; 658 struct pending_wmi_event *evt; 659 u8 *cmd; 660 void __iomem *src; 661 ulong flags; 662 unsigned n; 663 664 if (!test_bit(wil_status_reset_done, &wil->status)) { 665 wil_err(wil, "Reset not completed\n"); 666 return; 667 } 668 669 for (n = 0;; n++) { 670 u16 len; 671 672 r->head = ioread32(wil->csr + HOST_MBOX + 673 offsetof(struct wil6210_mbox_ctl, rx.head)); 674 if (r->tail == r->head) { 675 if (n == 0) 676 wil_dbg_wmi(wil, "No events?\n"); 677 return; 678 } 679 680 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n", 681 r->head, r->tail); 682 /* read cmd descriptor from tail */ 683 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail), 684 sizeof(struct wil6210_mbox_ring_desc)); 685 if (d_tail.sync == 0) { 686 wil_err(wil, "Mbox evt not owned by FW?\n"); 687 return; 688 } 689 690 /* read cmd header from descriptor */ 691 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) { 692 wil_err(wil, "Mbox evt at 0x%08x?\n", 693 le32_to_cpu(d_tail.addr)); 694 return; 695 } 696 len = le16_to_cpu(hdr.len); 697 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n", 698 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type), 699 hdr.flags); 700 701 /* read cmd buffer from descriptor */ 702 src = wmi_buffer(wil, d_tail.addr) + 703 sizeof(struct wil6210_mbox_hdr); 704 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event, 705 event.wmi) + len, 4), 706 GFP_KERNEL); 707 if (!evt) 708 return; 709 710 evt->event.hdr = hdr; 711 cmd = (void *)&evt->event.wmi; 712 wil_memcpy_fromio_32(cmd, src, len); 713 /* mark entry as empty */ 714 iowrite32(0, wil->csr + HOSTADDR(r->tail) + 715 offsetof(struct wil6210_mbox_ring_desc, sync)); 716 /* indicate */ 717 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) && 718 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 719 struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi; 720 u16 id = le16_to_cpu(wmi->id); 721 u32 tstamp = le32_to_cpu(wmi->timestamp); 722 wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n", 723 id, wmi->mid, tstamp); 724 trace_wil6210_wmi_event(wmi, &wmi[1], 725 len - sizeof(*wmi)); 726 } 727 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1, 728 &evt->event.hdr, sizeof(hdr) + len, true); 729 730 /* advance tail */ 731 r->tail = r->base + ((r->tail - r->base + 732 sizeof(struct wil6210_mbox_ring_desc)) % r->size); 733 iowrite32(r->tail, wil->csr + HOST_MBOX + 734 offsetof(struct wil6210_mbox_ctl, rx.tail)); 735 736 /* add to the pending list */ 737 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 738 list_add_tail(&evt->list, &wil->pending_wmi_ev); 739 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 740 { 741 int q = queue_work(wil->wmi_wq, 742 &wil->wmi_event_worker); 743 wil_dbg_wmi(wil, "queue_work -> %d\n", q); 744 } 745 } 746 if (n > 1) 747 wil_dbg_wmi(wil, "%s -> %d events processed\n", __func__, n); 748 } 749 750 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len, 751 u16 reply_id, void *reply, u8 reply_size, int to_msec) 752 { 753 int rc; 754 int remain; 755 756 mutex_lock(&wil->wmi_mutex); 757 758 rc = __wmi_send(wil, cmdid, buf, len); 759 if (rc) 760 goto out; 761 762 wil->reply_id = reply_id; 763 wil->reply_buf = reply; 764 wil->reply_size = reply_size; 765 remain = wait_for_completion_timeout(&wil->wmi_ready, 766 msecs_to_jiffies(to_msec)); 767 if (0 == remain) { 768 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n", 769 cmdid, reply_id, to_msec); 770 rc = -ETIME; 771 } else { 772 wil_dbg_wmi(wil, 773 "wmi_call(0x%04x->0x%04x) completed in %d msec\n", 774 cmdid, reply_id, 775 to_msec - jiffies_to_msecs(remain)); 776 } 777 wil->reply_id = 0; 778 wil->reply_buf = NULL; 779 wil->reply_size = 0; 780 out: 781 mutex_unlock(&wil->wmi_mutex); 782 783 return rc; 784 } 785 786 int wmi_echo(struct wil6210_priv *wil) 787 { 788 struct wmi_echo_cmd cmd = { 789 .value = cpu_to_le32(0x12345678), 790 }; 791 792 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd), 793 WMI_ECHO_RSP_EVENTID, NULL, 0, 20); 794 } 795 796 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr) 797 { 798 struct wmi_set_mac_address_cmd cmd; 799 800 memcpy(cmd.mac, addr, ETH_ALEN); 801 802 wil_dbg_wmi(wil, "Set MAC %pM\n", addr); 803 804 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd)); 805 } 806 807 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan) 808 { 809 int rc; 810 811 struct wmi_pcp_start_cmd cmd = { 812 .bcon_interval = cpu_to_le16(bi), 813 .network_type = wmi_nettype, 814 .disable_sec_offload = 1, 815 .channel = chan - 1, 816 .pcp_max_assoc_sta = WIL6210_MAX_CID, 817 }; 818 struct { 819 struct wil6210_mbox_hdr_wmi wmi; 820 struct wmi_pcp_started_event evt; 821 } __packed reply; 822 823 if (!wil->secure_pcp) 824 cmd.disable_sec = 1; 825 826 /* 827 * Processing time may be huge, in case of secure AP it takes about 828 * 3500ms for FW to start AP 829 */ 830 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd), 831 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000); 832 if (rc) 833 return rc; 834 835 if (reply.evt.status != WMI_FW_STATUS_SUCCESS) 836 rc = -EINVAL; 837 838 return rc; 839 } 840 841 int wmi_pcp_stop(struct wil6210_priv *wil) 842 { 843 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0, 844 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20); 845 } 846 847 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid) 848 { 849 struct wmi_set_ssid_cmd cmd = { 850 .ssid_len = cpu_to_le32(ssid_len), 851 }; 852 853 if (ssid_len > sizeof(cmd.ssid)) 854 return -EINVAL; 855 856 memcpy(cmd.ssid, ssid, ssid_len); 857 858 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd)); 859 } 860 861 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid) 862 { 863 int rc; 864 struct { 865 struct wil6210_mbox_hdr_wmi wmi; 866 struct wmi_set_ssid_cmd cmd; 867 } __packed reply; 868 int len; /* reply.cmd.ssid_len in CPU order */ 869 870 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID, 871 &reply, sizeof(reply), 20); 872 if (rc) 873 return rc; 874 875 len = le32_to_cpu(reply.cmd.ssid_len); 876 if (len > sizeof(reply.cmd.ssid)) 877 return -EINVAL; 878 879 *ssid_len = len; 880 memcpy(ssid, reply.cmd.ssid, len); 881 882 return 0; 883 } 884 885 int wmi_set_channel(struct wil6210_priv *wil, int channel) 886 { 887 struct wmi_set_pcp_channel_cmd cmd = { 888 .channel = channel - 1, 889 }; 890 891 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd)); 892 } 893 894 int wmi_get_channel(struct wil6210_priv *wil, int *channel) 895 { 896 int rc; 897 struct { 898 struct wil6210_mbox_hdr_wmi wmi; 899 struct wmi_set_pcp_channel_cmd cmd; 900 } __packed reply; 901 902 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0, 903 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20); 904 if (rc) 905 return rc; 906 907 if (reply.cmd.channel > 3) 908 return -EINVAL; 909 910 *channel = reply.cmd.channel + 1; 911 912 return 0; 913 } 914 915 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel) 916 { 917 struct wmi_p2p_cfg_cmd cmd = { 918 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD, 919 .channel = channel - 1, 920 }; 921 922 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd)); 923 } 924 925 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index, 926 const void *mac_addr) 927 { 928 struct wmi_delete_cipher_key_cmd cmd = { 929 .key_index = key_index, 930 }; 931 932 if (mac_addr) 933 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 934 935 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 936 } 937 938 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index, 939 const void *mac_addr, int key_len, const void *key) 940 { 941 struct wmi_add_cipher_key_cmd cmd = { 942 .key_index = key_index, 943 .key_usage = WMI_KEY_USE_PAIRWISE, 944 .key_len = key_len, 945 }; 946 947 if (!key || (key_len > sizeof(cmd.key))) 948 return -EINVAL; 949 950 memcpy(cmd.key, key, key_len); 951 if (mac_addr) 952 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 953 954 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 955 } 956 957 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie) 958 { 959 int rc; 960 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len; 961 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL); 962 if (!cmd) 963 return -ENOMEM; 964 965 cmd->mgmt_frm_type = type; 966 /* BUG: FW API define ieLen as u8. Will fix FW */ 967 cmd->ie_len = cpu_to_le16(ie_len); 968 memcpy(cmd->ie_info, ie, ie_len); 969 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len); 970 kfree(cmd); 971 972 return rc; 973 } 974 975 /** 976 * wmi_rxon - turn radio on/off 977 * @on: turn on if true, off otherwise 978 * 979 * Only switch radio. Channel should be set separately. 980 * No timeout for rxon - radio turned on forever unless some other call 981 * turns it off 982 */ 983 int wmi_rxon(struct wil6210_priv *wil, bool on) 984 { 985 int rc; 986 struct { 987 struct wil6210_mbox_hdr_wmi wmi; 988 struct wmi_listen_started_event evt; 989 } __packed reply; 990 991 wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off"); 992 993 if (on) { 994 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0, 995 WMI_LISTEN_STARTED_EVENTID, 996 &reply, sizeof(reply), 100); 997 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS)) 998 rc = -EINVAL; 999 } else { 1000 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0, 1001 WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20); 1002 } 1003 1004 return rc; 1005 } 1006 1007 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring) 1008 { 1009 struct wireless_dev *wdev = wil->wdev; 1010 struct net_device *ndev = wil_to_ndev(wil); 1011 struct wmi_cfg_rx_chain_cmd cmd = { 1012 .action = WMI_RX_CHAIN_ADD, 1013 .rx_sw_ring = { 1014 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN), 1015 .ring_mem_base = cpu_to_le64(vring->pa), 1016 .ring_size = cpu_to_le16(vring->size), 1017 }, 1018 .mid = 0, /* TODO - what is it? */ 1019 .decap_trans_type = WMI_DECAP_TYPE_802_3, 1020 .reorder_type = WMI_RX_SW_REORDER, 1021 }; 1022 struct { 1023 struct wil6210_mbox_hdr_wmi wmi; 1024 struct wmi_cfg_rx_chain_done_event evt; 1025 } __packed evt; 1026 int rc; 1027 1028 if (wdev->iftype == NL80211_IFTYPE_MONITOR) { 1029 struct ieee80211_channel *ch = wdev->preset_chandef.chan; 1030 1031 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON); 1032 if (ch) 1033 cmd.sniffer_cfg.channel = ch->hw_value - 1; 1034 cmd.sniffer_cfg.phy_info_mode = 1035 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP); 1036 cmd.sniffer_cfg.phy_support = 1037 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL) 1038 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP); 1039 } else { 1040 /* Initialize offload (in non-sniffer mode). 1041 * Linux IP stack always calculates IP checksum 1042 * HW always calculate TCP/UDP checksum 1043 */ 1044 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS); 1045 } 1046 /* typical time for secure PCP is 840ms */ 1047 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd), 1048 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000); 1049 if (rc) 1050 return rc; 1051 1052 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr); 1053 1054 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n", 1055 le32_to_cpu(evt.evt.status), vring->hwtail); 1056 1057 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS) 1058 rc = -EINVAL; 1059 1060 return rc; 1061 } 1062 1063 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r) 1064 { 1065 int rc; 1066 struct wmi_temp_sense_cmd cmd = { 1067 .measure_marlon_m_en = cpu_to_le32(!!t_m), 1068 .measure_marlon_r_en = cpu_to_le32(!!t_r), 1069 }; 1070 struct { 1071 struct wil6210_mbox_hdr_wmi wmi; 1072 struct wmi_temp_sense_done_event evt; 1073 } __packed reply; 1074 1075 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd), 1076 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100); 1077 if (rc) 1078 return rc; 1079 1080 if (t_m) 1081 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000); 1082 if (t_r) 1083 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000); 1084 1085 return 0; 1086 } 1087 1088 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason) 1089 { 1090 struct wmi_disconnect_sta_cmd cmd = { 1091 .disconnect_reason = cpu_to_le16(reason), 1092 }; 1093 memcpy(cmd.dst_mac, mac, ETH_ALEN); 1094 1095 wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason); 1096 1097 return wmi_send(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd)); 1098 } 1099 1100 void wmi_event_flush(struct wil6210_priv *wil) 1101 { 1102 struct pending_wmi_event *evt, *t; 1103 1104 wil_dbg_wmi(wil, "%s()\n", __func__); 1105 1106 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) { 1107 list_del(&evt->list); 1108 kfree(evt); 1109 } 1110 } 1111 1112 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id, 1113 void *d, int len) 1114 { 1115 uint i; 1116 1117 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) { 1118 if (wmi_evt_handlers[i].eventid == id) { 1119 wmi_evt_handlers[i].handler(wil, id, d, len); 1120 return true; 1121 } 1122 } 1123 1124 return false; 1125 } 1126 1127 static void wmi_event_handle(struct wil6210_priv *wil, 1128 struct wil6210_mbox_hdr *hdr) 1129 { 1130 u16 len = le16_to_cpu(hdr->len); 1131 1132 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) && 1133 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 1134 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]); 1135 void *evt_data = (void *)(&wmi[1]); 1136 u16 id = le16_to_cpu(wmi->id); 1137 /* check if someone waits for this event */ 1138 if (wil->reply_id && wil->reply_id == id) { 1139 if (wil->reply_buf) { 1140 memcpy(wil->reply_buf, wmi, 1141 min(len, wil->reply_size)); 1142 } else { 1143 wmi_evt_call_handler(wil, id, evt_data, 1144 len - sizeof(*wmi)); 1145 } 1146 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id); 1147 complete(&wil->wmi_ready); 1148 return; 1149 } 1150 /* unsolicited event */ 1151 /* search for handler */ 1152 if (!wmi_evt_call_handler(wil, id, evt_data, 1153 len - sizeof(*wmi))) { 1154 wil_err(wil, "Unhandled event 0x%04x\n", id); 1155 } 1156 } else { 1157 wil_err(wil, "Unknown event type\n"); 1158 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1, 1159 hdr, sizeof(*hdr) + len, true); 1160 } 1161 } 1162 1163 /* 1164 * Retrieve next WMI event from the pending list 1165 */ 1166 static struct list_head *next_wmi_ev(struct wil6210_priv *wil) 1167 { 1168 ulong flags; 1169 struct list_head *ret = NULL; 1170 1171 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 1172 1173 if (!list_empty(&wil->pending_wmi_ev)) { 1174 ret = wil->pending_wmi_ev.next; 1175 list_del(ret); 1176 } 1177 1178 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 1179 1180 return ret; 1181 } 1182 1183 /* 1184 * Handler for the WMI events 1185 */ 1186 void wmi_event_worker(struct work_struct *work) 1187 { 1188 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 1189 wmi_event_worker); 1190 struct pending_wmi_event *evt; 1191 struct list_head *lh; 1192 1193 while ((lh = next_wmi_ev(wil)) != NULL) { 1194 evt = list_entry(lh, struct pending_wmi_event, list); 1195 wmi_event_handle(wil, &evt->event.hdr); 1196 kfree(evt); 1197 } 1198 } 1199