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 .id = cpu_to_le16(cmdid), 176 .info1 = 0, 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(cmdid, 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 /* TODO convert LE to CPU */ 311 s32 signal = 0; /* TODO */ 312 __le16 fc = rx_mgmt_frame->frame_control; 313 u32 d_len = le32_to_cpu(data->info.len); 314 u16 d_status = le16_to_cpu(data->info.status); 315 316 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d\n", 317 data->info.channel, data->info.mcs, data->info.snr); 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, 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 ch = evt->channel + 1; 388 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n", 389 evt->bssid, ch, evt->cid); 390 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1, 391 evt->assoc_info, len - sizeof(*evt), true); 392 393 /* figure out IE's */ 394 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len + 395 assoc_req_ie_offset]; 396 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset; 397 if (evt->assoc_req_len <= assoc_req_ie_offset) { 398 assoc_req_ie = NULL; 399 assoc_req_ielen = 0; 400 } 401 402 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len + 403 evt->assoc_req_len + 404 assoc_resp_ie_offset]; 405 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset; 406 if (evt->assoc_resp_len <= assoc_resp_ie_offset) { 407 assoc_resp_ie = NULL; 408 assoc_resp_ielen = 0; 409 } 410 411 if ((wdev->iftype == NL80211_IFTYPE_STATION) || 412 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) { 413 if (!test_bit(wil_status_fwconnecting, &wil->status)) { 414 wil_err(wil, "Not in connecting state\n"); 415 return; 416 } 417 del_timer_sync(&wil->connect_timer); 418 cfg80211_connect_result(ndev, evt->bssid, 419 assoc_req_ie, assoc_req_ielen, 420 assoc_resp_ie, assoc_resp_ielen, 421 WLAN_STATUS_SUCCESS, GFP_KERNEL); 422 423 } else if ((wdev->iftype == NL80211_IFTYPE_AP) || 424 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { 425 memset(&sinfo, 0, sizeof(sinfo)); 426 427 sinfo.generation = wil->sinfo_gen++; 428 429 if (assoc_req_ie) { 430 sinfo.assoc_req_ies = assoc_req_ie; 431 sinfo.assoc_req_ies_len = assoc_req_ielen; 432 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 433 } 434 435 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL); 436 } 437 clear_bit(wil_status_fwconnecting, &wil->status); 438 set_bit(wil_status_fwconnected, &wil->status); 439 440 /* FIXME FW can transmit only ucast frames to peer */ 441 /* FIXME real ring_id instead of hard coded 0 */ 442 memcpy(wil->dst_addr[0], evt->bssid, ETH_ALEN); 443 444 wil->pending_connect_cid = evt->cid; 445 queue_work(wil->wmi_wq_conn, &wil->connect_worker); 446 } 447 448 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id, 449 void *d, int len) 450 { 451 struct wmi_disconnect_event *evt = d; 452 453 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n", 454 evt->bssid, 455 evt->protocol_reason_status, evt->disconnect_reason); 456 457 wil->sinfo_gen++; 458 459 wil6210_disconnect(wil, evt->bssid); 460 } 461 462 static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len) 463 { 464 struct wmi_notify_req_done_event *evt = d; 465 466 if (len < sizeof(*evt)) { 467 wil_err(wil, "Short NOTIFY event\n"); 468 return; 469 } 470 471 wil->stats.tsf = le64_to_cpu(evt->tsf); 472 wil->stats.snr = le32_to_cpu(evt->snr_val); 473 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs); 474 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector); 475 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector); 476 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector); 477 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector); 478 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n" 479 "BF status 0x%08x SNR 0x%08x\n" 480 "Tx Tpt %d goodput %d Rx goodput %d\n" 481 "Sectors(rx:tx) my %d:%d peer %d:%d\n", 482 wil->stats.bf_mcs, wil->stats.tsf, evt->status, 483 wil->stats.snr, le32_to_cpu(evt->tx_tpt), 484 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput), 485 wil->stats.my_rx_sector, wil->stats.my_tx_sector, 486 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector); 487 } 488 489 /* 490 * Firmware reports EAPOL frame using WME event. 491 * Reconstruct Ethernet frame and deliver it via normal Rx 492 */ 493 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id, 494 void *d, int len) 495 { 496 struct net_device *ndev = wil_to_ndev(wil); 497 struct wmi_eapol_rx_event *evt = d; 498 u16 eapol_len = le16_to_cpu(evt->eapol_len); 499 int sz = eapol_len + ETH_HLEN; 500 struct sk_buff *skb; 501 struct ethhdr *eth; 502 503 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len, 504 evt->src_mac); 505 506 if (eapol_len > 196) { /* TODO: revisit size limit */ 507 wil_err(wil, "EAPOL too large\n"); 508 return; 509 } 510 511 skb = alloc_skb(sz, GFP_KERNEL); 512 if (!skb) { 513 wil_err(wil, "Failed to allocate skb\n"); 514 return; 515 } 516 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN); 517 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN); 518 memcpy(eth->h_source, evt->src_mac, ETH_ALEN); 519 eth->h_proto = cpu_to_be16(ETH_P_PAE); 520 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len); 521 skb->protocol = eth_type_trans(skb, ndev); 522 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) { 523 ndev->stats.rx_packets++; 524 ndev->stats.rx_bytes += skb->len; 525 } else { 526 ndev->stats.rx_dropped++; 527 } 528 } 529 530 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len) 531 { 532 struct net_device *ndev = wil_to_ndev(wil); 533 struct wmi_data_port_open_event *evt = d; 534 535 wil_dbg_wmi(wil, "Link UP for CID %d\n", evt->cid); 536 537 netif_carrier_on(ndev); 538 } 539 540 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len) 541 { 542 struct net_device *ndev = wil_to_ndev(wil); 543 struct wmi_wbe_link_down_event *evt = d; 544 545 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n", 546 evt->cid, le32_to_cpu(evt->reason)); 547 548 netif_carrier_off(ndev); 549 } 550 551 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d, 552 int len) 553 { 554 struct wmi_vring_ba_status_event *evt = d; 555 556 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n", 557 evt->ringid, evt->status ? "N/A" : "OK", evt->agg_wsize, 558 __le16_to_cpu(evt->ba_timeout)); 559 } 560 561 static const struct { 562 int eventid; 563 void (*handler)(struct wil6210_priv *wil, int eventid, 564 void *data, int data_len); 565 } wmi_evt_handlers[] = { 566 {WMI_READY_EVENTID, wmi_evt_ready}, 567 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready}, 568 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt}, 569 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete}, 570 {WMI_CONNECT_EVENTID, wmi_evt_connect}, 571 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect}, 572 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify}, 573 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx}, 574 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup}, 575 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown}, 576 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status}, 577 }; 578 579 /* 580 * Run in IRQ context 581 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev 582 * that will be eventually handled by the @wmi_event_worker in the thread 583 * context of thread "wil6210_wmi" 584 */ 585 void wmi_recv_cmd(struct wil6210_priv *wil) 586 { 587 struct wil6210_mbox_ring_desc d_tail; 588 struct wil6210_mbox_hdr hdr; 589 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx; 590 struct pending_wmi_event *evt; 591 u8 *cmd; 592 void __iomem *src; 593 ulong flags; 594 595 if (!test_bit(wil_status_reset_done, &wil->status)) { 596 wil_err(wil, "Reset not completed\n"); 597 return; 598 } 599 600 for (;;) { 601 u16 len; 602 603 r->head = ioread32(wil->csr + HOST_MBOX + 604 offsetof(struct wil6210_mbox_ctl, rx.head)); 605 if (r->tail == r->head) 606 return; 607 608 /* read cmd from tail */ 609 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail), 610 sizeof(struct wil6210_mbox_ring_desc)); 611 if (d_tail.sync == 0) { 612 wil_err(wil, "Mbox evt not owned by FW?\n"); 613 return; 614 } 615 616 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) { 617 wil_err(wil, "Mbox evt at 0x%08x?\n", 618 le32_to_cpu(d_tail.addr)); 619 return; 620 } 621 622 len = le16_to_cpu(hdr.len); 623 src = wmi_buffer(wil, d_tail.addr) + 624 sizeof(struct wil6210_mbox_hdr); 625 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event, 626 event.wmi) + len, 4), 627 GFP_KERNEL); 628 if (!evt) 629 return; 630 631 evt->event.hdr = hdr; 632 cmd = (void *)&evt->event.wmi; 633 wil_memcpy_fromio_32(cmd, src, len); 634 /* mark entry as empty */ 635 iowrite32(0, wil->csr + HOSTADDR(r->tail) + 636 offsetof(struct wil6210_mbox_ring_desc, sync)); 637 /* indicate */ 638 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n", 639 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type), 640 hdr.flags); 641 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) && 642 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 643 u16 id = le16_to_cpu(evt->event.wmi.id); 644 wil_dbg_wmi(wil, "WMI event 0x%04x\n", id); 645 trace_wil6210_wmi_event(id, &evt->event.wmi, len); 646 } 647 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1, 648 &evt->event.hdr, sizeof(hdr) + len, true); 649 650 /* advance tail */ 651 r->tail = r->base + ((r->tail - r->base + 652 sizeof(struct wil6210_mbox_ring_desc)) % r->size); 653 iowrite32(r->tail, wil->csr + HOST_MBOX + 654 offsetof(struct wil6210_mbox_ctl, rx.tail)); 655 656 /* add to the pending list */ 657 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 658 list_add_tail(&evt->list, &wil->pending_wmi_ev); 659 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 660 { 661 int q = queue_work(wil->wmi_wq, 662 &wil->wmi_event_worker); 663 wil_dbg_wmi(wil, "queue_work -> %d\n", q); 664 } 665 } 666 } 667 668 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len, 669 u16 reply_id, void *reply, u8 reply_size, int to_msec) 670 { 671 int rc; 672 int remain; 673 674 mutex_lock(&wil->wmi_mutex); 675 676 rc = __wmi_send(wil, cmdid, buf, len); 677 if (rc) 678 goto out; 679 680 wil->reply_id = reply_id; 681 wil->reply_buf = reply; 682 wil->reply_size = reply_size; 683 remain = wait_for_completion_timeout(&wil->wmi_ready, 684 msecs_to_jiffies(to_msec)); 685 if (0 == remain) { 686 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n", 687 cmdid, reply_id, to_msec); 688 rc = -ETIME; 689 } else { 690 wil_dbg_wmi(wil, 691 "wmi_call(0x%04x->0x%04x) completed in %d msec\n", 692 cmdid, reply_id, 693 to_msec - jiffies_to_msecs(remain)); 694 } 695 wil->reply_id = 0; 696 wil->reply_buf = NULL; 697 wil->reply_size = 0; 698 out: 699 mutex_unlock(&wil->wmi_mutex); 700 701 return rc; 702 } 703 704 int wmi_echo(struct wil6210_priv *wil) 705 { 706 struct wmi_echo_cmd cmd = { 707 .value = cpu_to_le32(0x12345678), 708 }; 709 710 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd), 711 WMI_ECHO_RSP_EVENTID, NULL, 0, 20); 712 } 713 714 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr) 715 { 716 struct wmi_set_mac_address_cmd cmd; 717 718 memcpy(cmd.mac, addr, ETH_ALEN); 719 720 wil_dbg_wmi(wil, "Set MAC %pM\n", addr); 721 722 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd)); 723 } 724 725 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan) 726 { 727 int rc; 728 729 struct wmi_pcp_start_cmd cmd = { 730 .bcon_interval = cpu_to_le16(bi), 731 .network_type = wmi_nettype, 732 .disable_sec_offload = 1, 733 .channel = chan - 1, 734 }; 735 struct { 736 struct wil6210_mbox_hdr_wmi wmi; 737 struct wmi_pcp_started_event evt; 738 } __packed reply; 739 740 if (!wil->secure_pcp) 741 cmd.disable_sec = 1; 742 743 /* 744 * Processing time may be huge, in case of secure AP it takes about 745 * 3500ms for FW to start AP 746 */ 747 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd), 748 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000); 749 if (rc) 750 return rc; 751 752 if (reply.evt.status != WMI_FW_STATUS_SUCCESS) 753 rc = -EINVAL; 754 755 return rc; 756 } 757 758 int wmi_pcp_stop(struct wil6210_priv *wil) 759 { 760 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0, 761 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20); 762 } 763 764 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid) 765 { 766 struct wmi_set_ssid_cmd cmd = { 767 .ssid_len = cpu_to_le32(ssid_len), 768 }; 769 770 if (ssid_len > sizeof(cmd.ssid)) 771 return -EINVAL; 772 773 memcpy(cmd.ssid, ssid, ssid_len); 774 775 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd)); 776 } 777 778 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid) 779 { 780 int rc; 781 struct { 782 struct wil6210_mbox_hdr_wmi wmi; 783 struct wmi_set_ssid_cmd cmd; 784 } __packed reply; 785 int len; /* reply.cmd.ssid_len in CPU order */ 786 787 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID, 788 &reply, sizeof(reply), 20); 789 if (rc) 790 return rc; 791 792 len = le32_to_cpu(reply.cmd.ssid_len); 793 if (len > sizeof(reply.cmd.ssid)) 794 return -EINVAL; 795 796 *ssid_len = len; 797 memcpy(ssid, reply.cmd.ssid, len); 798 799 return 0; 800 } 801 802 int wmi_set_channel(struct wil6210_priv *wil, int channel) 803 { 804 struct wmi_set_pcp_channel_cmd cmd = { 805 .channel = channel - 1, 806 }; 807 808 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd)); 809 } 810 811 int wmi_get_channel(struct wil6210_priv *wil, int *channel) 812 { 813 int rc; 814 struct { 815 struct wil6210_mbox_hdr_wmi wmi; 816 struct wmi_set_pcp_channel_cmd cmd; 817 } __packed reply; 818 819 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0, 820 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20); 821 if (rc) 822 return rc; 823 824 if (reply.cmd.channel > 3) 825 return -EINVAL; 826 827 *channel = reply.cmd.channel + 1; 828 829 return 0; 830 } 831 832 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel) 833 { 834 struct wmi_p2p_cfg_cmd cmd = { 835 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD, 836 .channel = channel - 1, 837 }; 838 839 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd)); 840 } 841 842 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index, 843 const void *mac_addr) 844 { 845 struct wmi_delete_cipher_key_cmd cmd = { 846 .key_index = key_index, 847 }; 848 849 if (mac_addr) 850 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 851 852 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 853 } 854 855 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index, 856 const void *mac_addr, int key_len, const void *key) 857 { 858 struct wmi_add_cipher_key_cmd cmd = { 859 .key_index = key_index, 860 .key_usage = WMI_KEY_USE_PAIRWISE, 861 .key_len = key_len, 862 }; 863 864 if (!key || (key_len > sizeof(cmd.key))) 865 return -EINVAL; 866 867 memcpy(cmd.key, key, key_len); 868 if (mac_addr) 869 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 870 871 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 872 } 873 874 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie) 875 { 876 int rc; 877 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len; 878 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL); 879 if (!cmd) 880 return -ENOMEM; 881 882 cmd->mgmt_frm_type = type; 883 /* BUG: FW API define ieLen as u8. Will fix FW */ 884 cmd->ie_len = cpu_to_le16(ie_len); 885 memcpy(cmd->ie_info, ie, ie_len); 886 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len); 887 kfree(cmd); 888 889 return rc; 890 } 891 892 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring) 893 { 894 struct wireless_dev *wdev = wil->wdev; 895 struct net_device *ndev = wil_to_ndev(wil); 896 struct wmi_cfg_rx_chain_cmd cmd = { 897 .action = WMI_RX_CHAIN_ADD, 898 .rx_sw_ring = { 899 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN), 900 .ring_mem_base = cpu_to_le64(vring->pa), 901 .ring_size = cpu_to_le16(vring->size), 902 }, 903 .mid = 0, /* TODO - what is it? */ 904 .decap_trans_type = WMI_DECAP_TYPE_802_3, 905 }; 906 struct { 907 struct wil6210_mbox_hdr_wmi wmi; 908 struct wmi_cfg_rx_chain_done_event evt; 909 } __packed evt; 910 int rc; 911 912 if (wdev->iftype == NL80211_IFTYPE_MONITOR) { 913 struct ieee80211_channel *ch = wdev->preset_chandef.chan; 914 915 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON); 916 if (ch) 917 cmd.sniffer_cfg.channel = ch->hw_value - 1; 918 cmd.sniffer_cfg.phy_info_mode = 919 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP); 920 cmd.sniffer_cfg.phy_support = 921 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL) 922 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP); 923 } 924 /* typical time for secure PCP is 840ms */ 925 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd), 926 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000); 927 if (rc) 928 return rc; 929 930 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr); 931 932 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n", 933 le32_to_cpu(evt.evt.status), vring->hwtail); 934 935 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS) 936 rc = -EINVAL; 937 938 return rc; 939 } 940 941 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r) 942 { 943 int rc; 944 struct wmi_temp_sense_cmd cmd = { 945 .measure_marlon_m_en = cpu_to_le32(!!t_m), 946 .measure_marlon_r_en = cpu_to_le32(!!t_r), 947 }; 948 struct { 949 struct wil6210_mbox_hdr_wmi wmi; 950 struct wmi_temp_sense_done_event evt; 951 } __packed reply; 952 953 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd), 954 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100); 955 if (rc) 956 return rc; 957 958 if (t_m) 959 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000); 960 if (t_r) 961 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000); 962 963 return 0; 964 } 965 966 void wmi_event_flush(struct wil6210_priv *wil) 967 { 968 struct pending_wmi_event *evt, *t; 969 970 wil_dbg_wmi(wil, "%s()\n", __func__); 971 972 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) { 973 list_del(&evt->list); 974 kfree(evt); 975 } 976 } 977 978 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id, 979 void *d, int len) 980 { 981 uint i; 982 983 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) { 984 if (wmi_evt_handlers[i].eventid == id) { 985 wmi_evt_handlers[i].handler(wil, id, d, len); 986 return true; 987 } 988 } 989 990 return false; 991 } 992 993 static void wmi_event_handle(struct wil6210_priv *wil, 994 struct wil6210_mbox_hdr *hdr) 995 { 996 u16 len = le16_to_cpu(hdr->len); 997 998 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) && 999 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 1000 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]); 1001 void *evt_data = (void *)(&wmi[1]); 1002 u16 id = le16_to_cpu(wmi->id); 1003 /* check if someone waits for this event */ 1004 if (wil->reply_id && wil->reply_id == id) { 1005 if (wil->reply_buf) { 1006 memcpy(wil->reply_buf, wmi, 1007 min(len, wil->reply_size)); 1008 } else { 1009 wmi_evt_call_handler(wil, id, evt_data, 1010 len - sizeof(*wmi)); 1011 } 1012 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id); 1013 complete(&wil->wmi_ready); 1014 return; 1015 } 1016 /* unsolicited event */ 1017 /* search for handler */ 1018 if (!wmi_evt_call_handler(wil, id, evt_data, 1019 len - sizeof(*wmi))) { 1020 wil_err(wil, "Unhandled event 0x%04x\n", id); 1021 } 1022 } else { 1023 wil_err(wil, "Unknown event type\n"); 1024 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1, 1025 hdr, sizeof(*hdr) + len, true); 1026 } 1027 } 1028 1029 /* 1030 * Retrieve next WMI event from the pending list 1031 */ 1032 static struct list_head *next_wmi_ev(struct wil6210_priv *wil) 1033 { 1034 ulong flags; 1035 struct list_head *ret = NULL; 1036 1037 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 1038 1039 if (!list_empty(&wil->pending_wmi_ev)) { 1040 ret = wil->pending_wmi_ev.next; 1041 list_del(ret); 1042 } 1043 1044 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 1045 1046 return ret; 1047 } 1048 1049 /* 1050 * Handler for the WMI events 1051 */ 1052 void wmi_event_worker(struct work_struct *work) 1053 { 1054 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 1055 wmi_event_worker); 1056 struct pending_wmi_event *evt; 1057 struct list_head *lh; 1058 1059 while ((lh = next_wmi_ev(wil)) != NULL) { 1060 evt = list_entry(lh, struct pending_wmi_event, list); 1061 wmi_event_handle(wil, &evt->event.hdr); 1062 kfree(evt); 1063 } 1064 } 1065