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, "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_dbg_wmi(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: FW ready\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 != 0); 352 353 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status); 354 cfg80211_scan_done(wil->scan_request, aborted); 355 wil->scan_request = NULL; 356 } else { 357 wil_err(wil, "SCAN_COMPLETE while not scanning\n"); 358 } 359 } 360 361 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len) 362 { 363 struct net_device *ndev = wil_to_ndev(wil); 364 struct wireless_dev *wdev = wil->wdev; 365 struct wmi_connect_event *evt = d; 366 int ch; /* channel number */ 367 struct station_info sinfo; 368 u8 *assoc_req_ie, *assoc_resp_ie; 369 size_t assoc_req_ielen, assoc_resp_ielen; 370 /* capinfo(u16) + listen_interval(u16) + IEs */ 371 const size_t assoc_req_ie_offset = sizeof(u16) * 2; 372 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */ 373 const size_t assoc_resp_ie_offset = sizeof(u16) * 3; 374 375 if (len < sizeof(*evt)) { 376 wil_err(wil, "Connect event too short : %d bytes\n", len); 377 return; 378 } 379 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len + 380 evt->assoc_resp_len) { 381 wil_err(wil, 382 "Connect event corrupted : %d != %d + %d + %d + %d\n", 383 len, (int)sizeof(*evt), evt->beacon_ie_len, 384 evt->assoc_req_len, evt->assoc_resp_len); 385 return; 386 } 387 if (evt->cid >= WIL6210_MAX_CID) { 388 wil_err(wil, "Connect CID invalid : %d\n", evt->cid); 389 return; 390 } 391 392 ch = evt->channel + 1; 393 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n", 394 evt->bssid, ch, evt->cid); 395 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1, 396 evt->assoc_info, len - sizeof(*evt), true); 397 398 /* figure out IE's */ 399 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len + 400 assoc_req_ie_offset]; 401 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset; 402 if (evt->assoc_req_len <= assoc_req_ie_offset) { 403 assoc_req_ie = NULL; 404 assoc_req_ielen = 0; 405 } 406 407 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len + 408 evt->assoc_req_len + 409 assoc_resp_ie_offset]; 410 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset; 411 if (evt->assoc_resp_len <= assoc_resp_ie_offset) { 412 assoc_resp_ie = NULL; 413 assoc_resp_ielen = 0; 414 } 415 416 if ((wdev->iftype == NL80211_IFTYPE_STATION) || 417 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) { 418 if (!test_bit(wil_status_fwconnecting, &wil->status)) { 419 wil_err(wil, "Not in connecting state\n"); 420 return; 421 } 422 del_timer_sync(&wil->connect_timer); 423 cfg80211_connect_result(ndev, evt->bssid, 424 assoc_req_ie, assoc_req_ielen, 425 assoc_resp_ie, assoc_resp_ielen, 426 WLAN_STATUS_SUCCESS, GFP_KERNEL); 427 428 } else if ((wdev->iftype == NL80211_IFTYPE_AP) || 429 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { 430 memset(&sinfo, 0, sizeof(sinfo)); 431 432 sinfo.generation = wil->sinfo_gen++; 433 434 if (assoc_req_ie) { 435 sinfo.assoc_req_ies = assoc_req_ie; 436 sinfo.assoc_req_ies_len = assoc_req_ielen; 437 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 438 } 439 440 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL); 441 } 442 clear_bit(wil_status_fwconnecting, &wil->status); 443 set_bit(wil_status_fwconnected, &wil->status); 444 445 /* FIXME FW can transmit only ucast frames to peer */ 446 /* FIXME real ring_id instead of hard coded 0 */ 447 memcpy(wil->sta[evt->cid].addr, evt->bssid, ETH_ALEN); 448 wil->sta[evt->cid].status = wil_sta_conn_pending; 449 450 wil->pending_connect_cid = evt->cid; 451 queue_work(wil->wmi_wq_conn, &wil->connect_worker); 452 } 453 454 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id, 455 void *d, int len) 456 { 457 struct wmi_disconnect_event *evt = d; 458 459 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n", 460 evt->bssid, 461 evt->protocol_reason_status, evt->disconnect_reason); 462 463 wil->sinfo_gen++; 464 465 mutex_lock(&wil->mutex); 466 wil6210_disconnect(wil, evt->bssid); 467 mutex_unlock(&wil->mutex); 468 } 469 470 static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len) 471 { 472 struct wmi_notify_req_done_event *evt = d; 473 474 if (len < sizeof(*evt)) { 475 wil_err(wil, "Short NOTIFY event\n"); 476 return; 477 } 478 479 wil->stats.tsf = le64_to_cpu(evt->tsf); 480 wil->stats.snr = le32_to_cpu(evt->snr_val); 481 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs); 482 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector); 483 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector); 484 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector); 485 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector); 486 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n" 487 "BF status 0x%08x SNR 0x%08x SQI %d%%\n" 488 "Tx Tpt %d goodput %d Rx goodput %d\n" 489 "Sectors(rx:tx) my %d:%d peer %d:%d\n", 490 wil->stats.bf_mcs, wil->stats.tsf, evt->status, 491 wil->stats.snr, evt->sqi, le32_to_cpu(evt->tx_tpt), 492 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput), 493 wil->stats.my_rx_sector, wil->stats.my_tx_sector, 494 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector); 495 } 496 497 /* 498 * Firmware reports EAPOL frame using WME event. 499 * Reconstruct Ethernet frame and deliver it via normal Rx 500 */ 501 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id, 502 void *d, int len) 503 { 504 struct net_device *ndev = wil_to_ndev(wil); 505 struct wmi_eapol_rx_event *evt = d; 506 u16 eapol_len = le16_to_cpu(evt->eapol_len); 507 int sz = eapol_len + ETH_HLEN; 508 struct sk_buff *skb; 509 struct ethhdr *eth; 510 int cid; 511 struct wil_net_stats *stats = NULL; 512 513 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len, 514 evt->src_mac); 515 516 cid = wil_find_cid(wil, evt->src_mac); 517 if (cid >= 0) 518 stats = &wil->sta[cid].stats; 519 520 if (eapol_len > 196) { /* TODO: revisit size limit */ 521 wil_err(wil, "EAPOL too large\n"); 522 return; 523 } 524 525 skb = alloc_skb(sz, GFP_KERNEL); 526 if (!skb) { 527 wil_err(wil, "Failed to allocate skb\n"); 528 return; 529 } 530 531 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN); 532 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN); 533 memcpy(eth->h_source, evt->src_mac, ETH_ALEN); 534 eth->h_proto = cpu_to_be16(ETH_P_PAE); 535 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len); 536 skb->protocol = eth_type_trans(skb, ndev); 537 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) { 538 ndev->stats.rx_packets++; 539 ndev->stats.rx_bytes += sz; 540 if (stats) { 541 stats->rx_packets++; 542 stats->rx_bytes += sz; 543 } 544 } else { 545 ndev->stats.rx_dropped++; 546 if (stats) 547 stats->rx_dropped++; 548 } 549 } 550 551 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len) 552 { 553 struct net_device *ndev = wil_to_ndev(wil); 554 struct wmi_data_port_open_event *evt = d; 555 u8 cid = evt->cid; 556 557 wil_dbg_wmi(wil, "Link UP for CID %d\n", cid); 558 559 if (cid >= ARRAY_SIZE(wil->sta)) { 560 wil_err(wil, "Link UP for invalid CID %d\n", cid); 561 return; 562 } 563 564 wil->sta[cid].data_port_open = true; 565 netif_carrier_on(ndev); 566 } 567 568 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len) 569 { 570 struct net_device *ndev = wil_to_ndev(wil); 571 struct wmi_wbe_link_down_event *evt = d; 572 u8 cid = evt->cid; 573 574 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n", 575 cid, le32_to_cpu(evt->reason)); 576 577 if (cid >= ARRAY_SIZE(wil->sta)) { 578 wil_err(wil, "Link DOWN for invalid CID %d\n", cid); 579 return; 580 } 581 582 wil->sta[cid].data_port_open = false; 583 netif_carrier_off(ndev); 584 } 585 586 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d, 587 int len) 588 { 589 struct wmi_vring_ba_status_event *evt = d; 590 struct wil_sta_info *sta; 591 uint i, cid; 592 593 /* TODO: use Rx BA status, not Tx one */ 594 595 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n", 596 evt->ringid, 597 evt->status == WMI_BA_AGREED ? "OK" : "N/A", 598 evt->agg_wsize, __le16_to_cpu(evt->ba_timeout)); 599 600 if (evt->ringid >= WIL6210_MAX_TX_RINGS) { 601 wil_err(wil, "invalid ring id %d\n", evt->ringid); 602 return; 603 } 604 605 cid = wil->vring2cid_tid[evt->ringid][0]; 606 if (cid >= WIL6210_MAX_CID) { 607 wil_err(wil, "invalid CID %d for vring %d\n", cid, evt->ringid); 608 return; 609 } 610 611 sta = &wil->sta[cid]; 612 if (sta->status == wil_sta_unused) { 613 wil_err(wil, "CID %d unused\n", cid); 614 return; 615 } 616 617 wil_dbg_wmi(wil, "BACK for CID %d %pM\n", cid, sta->addr); 618 for (i = 0; i < WIL_STA_TID_NUM; i++) { 619 struct wil_tid_ampdu_rx *r = sta->tid_rx[i]; 620 sta->tid_rx[i] = NULL; 621 wil_tid_ampdu_rx_free(wil, r); 622 if ((evt->status == WMI_BA_AGREED) && evt->agg_wsize) 623 sta->tid_rx[i] = wil_tid_ampdu_rx_alloc(wil, 624 evt->agg_wsize, 0); 625 } 626 } 627 628 static const struct { 629 int eventid; 630 void (*handler)(struct wil6210_priv *wil, int eventid, 631 void *data, int data_len); 632 } wmi_evt_handlers[] = { 633 {WMI_READY_EVENTID, wmi_evt_ready}, 634 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready}, 635 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt}, 636 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete}, 637 {WMI_CONNECT_EVENTID, wmi_evt_connect}, 638 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect}, 639 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify}, 640 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx}, 641 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup}, 642 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown}, 643 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status}, 644 }; 645 646 /* 647 * Run in IRQ context 648 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev 649 * that will be eventually handled by the @wmi_event_worker in the thread 650 * context of thread "wil6210_wmi" 651 */ 652 void wmi_recv_cmd(struct wil6210_priv *wil) 653 { 654 struct wil6210_mbox_ring_desc d_tail; 655 struct wil6210_mbox_hdr hdr; 656 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx; 657 struct pending_wmi_event *evt; 658 u8 *cmd; 659 void __iomem *src; 660 ulong flags; 661 662 if (!test_bit(wil_status_reset_done, &wil->status)) { 663 wil_err(wil, "Reset not completed\n"); 664 return; 665 } 666 667 for (;;) { 668 u16 len; 669 670 r->head = ioread32(wil->csr + HOST_MBOX + 671 offsetof(struct wil6210_mbox_ctl, rx.head)); 672 if (r->tail == r->head) 673 return; 674 675 /* read cmd from tail */ 676 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail), 677 sizeof(struct wil6210_mbox_ring_desc)); 678 if (d_tail.sync == 0) { 679 wil_err(wil, "Mbox evt not owned by FW?\n"); 680 return; 681 } 682 683 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) { 684 wil_err(wil, "Mbox evt at 0x%08x?\n", 685 le32_to_cpu(d_tail.addr)); 686 return; 687 } 688 689 len = le16_to_cpu(hdr.len); 690 src = wmi_buffer(wil, d_tail.addr) + 691 sizeof(struct wil6210_mbox_hdr); 692 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event, 693 event.wmi) + len, 4), 694 GFP_KERNEL); 695 if (!evt) 696 return; 697 698 evt->event.hdr = hdr; 699 cmd = (void *)&evt->event.wmi; 700 wil_memcpy_fromio_32(cmd, src, len); 701 /* mark entry as empty */ 702 iowrite32(0, wil->csr + HOSTADDR(r->tail) + 703 offsetof(struct wil6210_mbox_ring_desc, sync)); 704 /* indicate */ 705 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n", 706 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type), 707 hdr.flags); 708 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) && 709 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 710 struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi; 711 u16 id = le16_to_cpu(wmi->id); 712 u32 tstamp = le32_to_cpu(wmi->timestamp); 713 wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n", 714 id, wmi->mid, tstamp); 715 trace_wil6210_wmi_event(wmi, &wmi[1], 716 len - sizeof(*wmi)); 717 } 718 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1, 719 &evt->event.hdr, sizeof(hdr) + len, true); 720 721 /* advance tail */ 722 r->tail = r->base + ((r->tail - r->base + 723 sizeof(struct wil6210_mbox_ring_desc)) % r->size); 724 iowrite32(r->tail, wil->csr + HOST_MBOX + 725 offsetof(struct wil6210_mbox_ctl, rx.tail)); 726 727 /* add to the pending list */ 728 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 729 list_add_tail(&evt->list, &wil->pending_wmi_ev); 730 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 731 { 732 int q = queue_work(wil->wmi_wq, 733 &wil->wmi_event_worker); 734 wil_dbg_wmi(wil, "queue_work -> %d\n", q); 735 } 736 } 737 } 738 739 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len, 740 u16 reply_id, void *reply, u8 reply_size, int to_msec) 741 { 742 int rc; 743 int remain; 744 745 mutex_lock(&wil->wmi_mutex); 746 747 rc = __wmi_send(wil, cmdid, buf, len); 748 if (rc) 749 goto out; 750 751 wil->reply_id = reply_id; 752 wil->reply_buf = reply; 753 wil->reply_size = reply_size; 754 remain = wait_for_completion_timeout(&wil->wmi_ready, 755 msecs_to_jiffies(to_msec)); 756 if (0 == remain) { 757 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n", 758 cmdid, reply_id, to_msec); 759 rc = -ETIME; 760 } else { 761 wil_dbg_wmi(wil, 762 "wmi_call(0x%04x->0x%04x) completed in %d msec\n", 763 cmdid, reply_id, 764 to_msec - jiffies_to_msecs(remain)); 765 } 766 wil->reply_id = 0; 767 wil->reply_buf = NULL; 768 wil->reply_size = 0; 769 out: 770 mutex_unlock(&wil->wmi_mutex); 771 772 return rc; 773 } 774 775 int wmi_echo(struct wil6210_priv *wil) 776 { 777 struct wmi_echo_cmd cmd = { 778 .value = cpu_to_le32(0x12345678), 779 }; 780 781 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd), 782 WMI_ECHO_RSP_EVENTID, NULL, 0, 20); 783 } 784 785 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr) 786 { 787 struct wmi_set_mac_address_cmd cmd; 788 789 memcpy(cmd.mac, addr, ETH_ALEN); 790 791 wil_dbg_wmi(wil, "Set MAC %pM\n", addr); 792 793 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd)); 794 } 795 796 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan) 797 { 798 int rc; 799 800 struct wmi_pcp_start_cmd cmd = { 801 .bcon_interval = cpu_to_le16(bi), 802 .network_type = wmi_nettype, 803 .disable_sec_offload = 1, 804 .channel = chan - 1, 805 }; 806 struct { 807 struct wil6210_mbox_hdr_wmi wmi; 808 struct wmi_pcp_started_event evt; 809 } __packed reply; 810 811 if (!wil->secure_pcp) 812 cmd.disable_sec = 1; 813 814 /* 815 * Processing time may be huge, in case of secure AP it takes about 816 * 3500ms for FW to start AP 817 */ 818 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd), 819 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000); 820 if (rc) 821 return rc; 822 823 if (reply.evt.status != WMI_FW_STATUS_SUCCESS) 824 rc = -EINVAL; 825 826 return rc; 827 } 828 829 int wmi_pcp_stop(struct wil6210_priv *wil) 830 { 831 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0, 832 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20); 833 } 834 835 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid) 836 { 837 struct wmi_set_ssid_cmd cmd = { 838 .ssid_len = cpu_to_le32(ssid_len), 839 }; 840 841 if (ssid_len > sizeof(cmd.ssid)) 842 return -EINVAL; 843 844 memcpy(cmd.ssid, ssid, ssid_len); 845 846 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd)); 847 } 848 849 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid) 850 { 851 int rc; 852 struct { 853 struct wil6210_mbox_hdr_wmi wmi; 854 struct wmi_set_ssid_cmd cmd; 855 } __packed reply; 856 int len; /* reply.cmd.ssid_len in CPU order */ 857 858 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID, 859 &reply, sizeof(reply), 20); 860 if (rc) 861 return rc; 862 863 len = le32_to_cpu(reply.cmd.ssid_len); 864 if (len > sizeof(reply.cmd.ssid)) 865 return -EINVAL; 866 867 *ssid_len = len; 868 memcpy(ssid, reply.cmd.ssid, len); 869 870 return 0; 871 } 872 873 int wmi_set_channel(struct wil6210_priv *wil, int channel) 874 { 875 struct wmi_set_pcp_channel_cmd cmd = { 876 .channel = channel - 1, 877 }; 878 879 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd)); 880 } 881 882 int wmi_get_channel(struct wil6210_priv *wil, int *channel) 883 { 884 int rc; 885 struct { 886 struct wil6210_mbox_hdr_wmi wmi; 887 struct wmi_set_pcp_channel_cmd cmd; 888 } __packed reply; 889 890 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0, 891 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20); 892 if (rc) 893 return rc; 894 895 if (reply.cmd.channel > 3) 896 return -EINVAL; 897 898 *channel = reply.cmd.channel + 1; 899 900 return 0; 901 } 902 903 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel) 904 { 905 struct wmi_p2p_cfg_cmd cmd = { 906 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD, 907 .channel = channel - 1, 908 }; 909 910 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd)); 911 } 912 913 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index, 914 const void *mac_addr) 915 { 916 struct wmi_delete_cipher_key_cmd cmd = { 917 .key_index = key_index, 918 }; 919 920 if (mac_addr) 921 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 922 923 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 924 } 925 926 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index, 927 const void *mac_addr, int key_len, const void *key) 928 { 929 struct wmi_add_cipher_key_cmd cmd = { 930 .key_index = key_index, 931 .key_usage = WMI_KEY_USE_PAIRWISE, 932 .key_len = key_len, 933 }; 934 935 if (!key || (key_len > sizeof(cmd.key))) 936 return -EINVAL; 937 938 memcpy(cmd.key, key, key_len); 939 if (mac_addr) 940 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 941 942 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 943 } 944 945 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie) 946 { 947 int rc; 948 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len; 949 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL); 950 if (!cmd) 951 return -ENOMEM; 952 953 cmd->mgmt_frm_type = type; 954 /* BUG: FW API define ieLen as u8. Will fix FW */ 955 cmd->ie_len = cpu_to_le16(ie_len); 956 memcpy(cmd->ie_info, ie, ie_len); 957 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len); 958 kfree(cmd); 959 960 return rc; 961 } 962 963 /** 964 * wmi_rxon - turn radio on/off 965 * @on: turn on if true, off otherwise 966 * 967 * Only switch radio. Channel should be set separately. 968 * No timeout for rxon - radio turned on forever unless some other call 969 * turns it off 970 */ 971 int wmi_rxon(struct wil6210_priv *wil, bool on) 972 { 973 int rc; 974 struct { 975 struct wil6210_mbox_hdr_wmi wmi; 976 struct wmi_listen_started_event evt; 977 } __packed reply; 978 979 wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off"); 980 981 if (on) { 982 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0, 983 WMI_LISTEN_STARTED_EVENTID, 984 &reply, sizeof(reply), 100); 985 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS)) 986 rc = -EINVAL; 987 } else { 988 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0, 989 WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20); 990 } 991 992 return rc; 993 } 994 995 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring) 996 { 997 struct wireless_dev *wdev = wil->wdev; 998 struct net_device *ndev = wil_to_ndev(wil); 999 struct wmi_cfg_rx_chain_cmd cmd = { 1000 .action = WMI_RX_CHAIN_ADD, 1001 .rx_sw_ring = { 1002 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN), 1003 .ring_mem_base = cpu_to_le64(vring->pa), 1004 .ring_size = cpu_to_le16(vring->size), 1005 }, 1006 .mid = 0, /* TODO - what is it? */ 1007 .decap_trans_type = WMI_DECAP_TYPE_802_3, 1008 .reorder_type = WMI_RX_SW_REORDER, 1009 }; 1010 struct { 1011 struct wil6210_mbox_hdr_wmi wmi; 1012 struct wmi_cfg_rx_chain_done_event evt; 1013 } __packed evt; 1014 int rc; 1015 1016 if (wdev->iftype == NL80211_IFTYPE_MONITOR) { 1017 struct ieee80211_channel *ch = wdev->preset_chandef.chan; 1018 1019 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON); 1020 if (ch) 1021 cmd.sniffer_cfg.channel = ch->hw_value - 1; 1022 cmd.sniffer_cfg.phy_info_mode = 1023 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP); 1024 cmd.sniffer_cfg.phy_support = 1025 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL) 1026 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP); 1027 } else { 1028 /* Initialize offload (in non-sniffer mode). 1029 * Linux IP stack always calculates IP checksum 1030 * HW always calculate TCP/UDP checksum 1031 */ 1032 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS); 1033 } 1034 /* typical time for secure PCP is 840ms */ 1035 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd), 1036 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000); 1037 if (rc) 1038 return rc; 1039 1040 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr); 1041 1042 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n", 1043 le32_to_cpu(evt.evt.status), vring->hwtail); 1044 1045 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS) 1046 rc = -EINVAL; 1047 1048 return rc; 1049 } 1050 1051 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r) 1052 { 1053 int rc; 1054 struct wmi_temp_sense_cmd cmd = { 1055 .measure_marlon_m_en = cpu_to_le32(!!t_m), 1056 .measure_marlon_r_en = cpu_to_le32(!!t_r), 1057 }; 1058 struct { 1059 struct wil6210_mbox_hdr_wmi wmi; 1060 struct wmi_temp_sense_done_event evt; 1061 } __packed reply; 1062 1063 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd), 1064 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100); 1065 if (rc) 1066 return rc; 1067 1068 if (t_m) 1069 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000); 1070 if (t_r) 1071 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000); 1072 1073 return 0; 1074 } 1075 1076 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason) 1077 { 1078 struct wmi_disconnect_sta_cmd cmd = { 1079 .disconnect_reason = cpu_to_le16(reason), 1080 }; 1081 memcpy(cmd.dst_mac, mac, ETH_ALEN); 1082 1083 wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason); 1084 1085 return wmi_send(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd)); 1086 } 1087 1088 void wmi_event_flush(struct wil6210_priv *wil) 1089 { 1090 struct pending_wmi_event *evt, *t; 1091 1092 wil_dbg_wmi(wil, "%s()\n", __func__); 1093 1094 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) { 1095 list_del(&evt->list); 1096 kfree(evt); 1097 } 1098 } 1099 1100 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id, 1101 void *d, int len) 1102 { 1103 uint i; 1104 1105 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) { 1106 if (wmi_evt_handlers[i].eventid == id) { 1107 wmi_evt_handlers[i].handler(wil, id, d, len); 1108 return true; 1109 } 1110 } 1111 1112 return false; 1113 } 1114 1115 static void wmi_event_handle(struct wil6210_priv *wil, 1116 struct wil6210_mbox_hdr *hdr) 1117 { 1118 u16 len = le16_to_cpu(hdr->len); 1119 1120 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) && 1121 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 1122 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]); 1123 void *evt_data = (void *)(&wmi[1]); 1124 u16 id = le16_to_cpu(wmi->id); 1125 /* check if someone waits for this event */ 1126 if (wil->reply_id && wil->reply_id == id) { 1127 if (wil->reply_buf) { 1128 memcpy(wil->reply_buf, wmi, 1129 min(len, wil->reply_size)); 1130 } else { 1131 wmi_evt_call_handler(wil, id, evt_data, 1132 len - sizeof(*wmi)); 1133 } 1134 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id); 1135 complete(&wil->wmi_ready); 1136 return; 1137 } 1138 /* unsolicited event */ 1139 /* search for handler */ 1140 if (!wmi_evt_call_handler(wil, id, evt_data, 1141 len - sizeof(*wmi))) { 1142 wil_err(wil, "Unhandled event 0x%04x\n", id); 1143 } 1144 } else { 1145 wil_err(wil, "Unknown event type\n"); 1146 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1, 1147 hdr, sizeof(*hdr) + len, true); 1148 } 1149 } 1150 1151 /* 1152 * Retrieve next WMI event from the pending list 1153 */ 1154 static struct list_head *next_wmi_ev(struct wil6210_priv *wil) 1155 { 1156 ulong flags; 1157 struct list_head *ret = NULL; 1158 1159 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 1160 1161 if (!list_empty(&wil->pending_wmi_ev)) { 1162 ret = wil->pending_wmi_ev.next; 1163 list_del(ret); 1164 } 1165 1166 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 1167 1168 return ret; 1169 } 1170 1171 /* 1172 * Handler for the WMI events 1173 */ 1174 void wmi_event_worker(struct work_struct *work) 1175 { 1176 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 1177 wmi_event_worker); 1178 struct pending_wmi_event *evt; 1179 struct list_head *lh; 1180 1181 while ((lh = next_wmi_ev(wil)) != NULL) { 1182 evt = list_entry(lh, struct pending_wmi_event, list); 1183 wmi_event_handle(wil, &evt->event.hdr); 1184 kfree(evt); 1185 } 1186 } 1187