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/pci.h> 18 #include <linux/io.h> 19 #include <linux/list.h> 20 #include <linux/etherdevice.h> 21 22 #include "wil6210.h" 23 #include "wmi.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, 0x932000, 0x8c0000}, /* trivial mapping for upper area */ 79 /* 80 * 920000..930000 ucode code RAM 81 * 930000..932000 ucode data RAM 82 */ 83 }; 84 85 /** 86 * return AHB address for given firmware/ucode internal (linker) address 87 * @x - internal address 88 * If address have no valid AHB mapping, return 0 89 */ 90 static u32 wmi_addr_remap(u32 x) 91 { 92 uint i; 93 94 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) { 95 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to)) 96 return x + fw_mapping[i].host - fw_mapping[i].from; 97 } 98 99 return 0; 100 } 101 102 /** 103 * Check address validity for WMI buffer; remap if needed 104 * @ptr - internal (linker) fw/ucode address 105 * 106 * Valid buffer should be DWORD aligned 107 * 108 * return address for accessing buffer from the host; 109 * if buffer is not valid, return NULL. 110 */ 111 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_) 112 { 113 u32 off; 114 u32 ptr = le32_to_cpu(ptr_); 115 116 if (ptr % 4) 117 return NULL; 118 119 ptr = wmi_addr_remap(ptr); 120 if (ptr < WIL6210_FW_HOST_OFF) 121 return NULL; 122 123 off = HOSTADDR(ptr); 124 if (off > WIL6210_MEM_SIZE - 4) 125 return NULL; 126 127 return wil->csr + off; 128 } 129 130 /** 131 * Check address validity 132 */ 133 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr) 134 { 135 u32 off; 136 137 if (ptr % 4) 138 return NULL; 139 140 if (ptr < WIL6210_FW_HOST_OFF) 141 return NULL; 142 143 off = HOSTADDR(ptr); 144 if (off > WIL6210_MEM_SIZE - 4) 145 return NULL; 146 147 return wil->csr + off; 148 } 149 150 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr, 151 struct wil6210_mbox_hdr *hdr) 152 { 153 void __iomem *src = wmi_buffer(wil, ptr); 154 if (!src) 155 return -EINVAL; 156 157 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr)); 158 159 return 0; 160 } 161 162 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len) 163 { 164 struct { 165 struct wil6210_mbox_hdr hdr; 166 struct wil6210_mbox_hdr_wmi wmi; 167 } __packed cmd = { 168 .hdr = { 169 .type = WIL_MBOX_HDR_TYPE_WMI, 170 .flags = 0, 171 .len = cpu_to_le16(sizeof(cmd.wmi) + len), 172 }, 173 .wmi = { 174 .id = cpu_to_le16(cmdid), 175 .info1 = 0, 176 }, 177 }; 178 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx; 179 struct wil6210_mbox_ring_desc d_head; 180 u32 next_head; 181 void __iomem *dst; 182 void __iomem *head = wmi_addr(wil, r->head); 183 uint retry; 184 185 if (sizeof(cmd) + len > r->entry_size) { 186 wil_err(wil, "WMI size too large: %d bytes, max is %d\n", 187 (int)(sizeof(cmd) + len), r->entry_size); 188 return -ERANGE; 189 190 } 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 /* interrupt to FW */ 252 iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT); 253 254 return 0; 255 } 256 257 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len) 258 { 259 int rc; 260 261 mutex_lock(&wil->wmi_mutex); 262 rc = __wmi_send(wil, cmdid, buf, len); 263 mutex_unlock(&wil->wmi_mutex); 264 265 return rc; 266 } 267 268 /*=== Event handlers ===*/ 269 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len) 270 { 271 struct net_device *ndev = wil_to_ndev(wil); 272 struct wireless_dev *wdev = wil->wdev; 273 struct wmi_ready_event *evt = d; 274 u32 ver = le32_to_cpu(evt->sw_version); 275 276 wil_dbg_WMI(wil, "FW ver. %d; MAC %pM\n", ver, evt->mac); 277 278 if (!is_valid_ether_addr(ndev->dev_addr)) { 279 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN); 280 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN); 281 } 282 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version), 283 "%d", ver); 284 } 285 286 static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d, 287 int len) 288 { 289 wil_dbg_WMI(wil, "WMI: FW ready\n"); 290 291 set_bit(wil_status_fwready, &wil->status); 292 /* reuse wmi_ready for the firmware ready indication */ 293 complete(&wil->wmi_ready); 294 } 295 296 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len) 297 { 298 struct wmi_rx_mgmt_packet_event *data = d; 299 struct wiphy *wiphy = wil_to_wiphy(wil); 300 struct ieee80211_mgmt *rx_mgmt_frame = 301 (struct ieee80211_mgmt *)data->payload; 302 int ch_no = data->info.channel+1; 303 u32 freq = ieee80211_channel_to_frequency(ch_no, 304 IEEE80211_BAND_60GHZ); 305 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq); 306 /* TODO convert LE to CPU */ 307 s32 signal = 0; /* TODO */ 308 __le16 fc = rx_mgmt_frame->frame_control; 309 u32 d_len = le32_to_cpu(data->info.len); 310 u16 d_status = le16_to_cpu(data->info.status); 311 312 wil_dbg_WMI(wil, "MGMT: channel %d MCS %d SNR %d\n", 313 data->info.channel, data->info.mcs, data->info.snr); 314 wil_dbg_WMI(wil, "status 0x%04x len %d stype %04x\n", d_status, d_len, 315 le16_to_cpu(data->info.stype)); 316 wil_dbg_WMI(wil, "qid %d mid %d cid %d\n", 317 data->info.qid, data->info.mid, data->info.cid); 318 319 if (!channel) { 320 wil_err(wil, "Frame on unsupported channel\n"); 321 return; 322 } 323 324 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) { 325 struct cfg80211_bss *bss; 326 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp); 327 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info); 328 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int); 329 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable; 330 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt, 331 u.beacon.variable); 332 wil_dbg_WMI(wil, "Capability info : 0x%04x\n", cap); 333 334 bss = cfg80211_inform_bss(wiphy, channel, rx_mgmt_frame->bssid, 335 tsf, cap, bi, ie_buf, ie_len, 336 signal, GFP_KERNEL); 337 if (bss) { 338 wil_dbg_WMI(wil, "Added BSS %pM\n", 339 rx_mgmt_frame->bssid); 340 cfg80211_put_bss(bss); 341 } else { 342 wil_err(wil, "cfg80211_inform_bss() failed\n"); 343 } 344 } 345 } 346 347 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id, 348 void *d, int len) 349 { 350 if (wil->scan_request) { 351 struct wmi_scan_complete_event *data = d; 352 bool aborted = (data->status != 0); 353 354 wil_dbg_WMI(wil, "SCAN_COMPLETE(0x%08x)\n", data->status); 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 ch = evt->channel + 1; 389 wil_dbg_WMI(wil, "Connect %pM channel [%d] cid %d\n", 390 evt->bssid, ch, evt->cid); 391 wil_hex_dump_WMI("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1, 392 evt->assoc_info, len - sizeof(*evt), true); 393 394 /* figure out IE's */ 395 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len + 396 assoc_req_ie_offset]; 397 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset; 398 if (evt->assoc_req_len <= assoc_req_ie_offset) { 399 assoc_req_ie = NULL; 400 assoc_req_ielen = 0; 401 } 402 403 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len + 404 evt->assoc_req_len + 405 assoc_resp_ie_offset]; 406 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset; 407 if (evt->assoc_resp_len <= assoc_resp_ie_offset) { 408 assoc_resp_ie = NULL; 409 assoc_resp_ielen = 0; 410 } 411 412 if ((wdev->iftype == NL80211_IFTYPE_STATION) || 413 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) { 414 if (wdev->sme_state != CFG80211_SME_CONNECTING) { 415 wil_err(wil, "Not in connecting state\n"); 416 return; 417 } 418 del_timer_sync(&wil->connect_timer); 419 cfg80211_connect_result(ndev, evt->bssid, 420 assoc_req_ie, assoc_req_ielen, 421 assoc_resp_ie, assoc_resp_ielen, 422 WLAN_STATUS_SUCCESS, GFP_KERNEL); 423 424 } else if ((wdev->iftype == NL80211_IFTYPE_AP) || 425 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { 426 memset(&sinfo, 0, sizeof(sinfo)); 427 428 sinfo.generation = wil->sinfo_gen++; 429 430 if (assoc_req_ie) { 431 sinfo.assoc_req_ies = assoc_req_ie; 432 sinfo.assoc_req_ies_len = assoc_req_ielen; 433 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 434 } 435 436 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL); 437 } 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->wmi_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 clear_bit(wil_status_dontscan, &wil->status); 461 } 462 463 static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len) 464 { 465 struct wmi_notify_req_done_event *evt = d; 466 467 if (len < sizeof(*evt)) { 468 wil_err(wil, "Short NOTIFY event\n"); 469 return; 470 } 471 472 wil->stats.tsf = le64_to_cpu(evt->tsf); 473 wil->stats.snr = le32_to_cpu(evt->snr_val); 474 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs); 475 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector); 476 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector); 477 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector); 478 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector); 479 wil_dbg_WMI(wil, "Link status, MCS %d TSF 0x%016llx\n" 480 "BF status 0x%08x SNR 0x%08x\n" 481 "Tx Tpt %d goodput %d Rx goodput %d\n" 482 "Sectors(rx:tx) my %d:%d peer %d:%d\n", 483 wil->stats.bf_mcs, wil->stats.tsf, evt->status, 484 wil->stats.snr, le32_to_cpu(evt->tx_tpt), 485 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput), 486 wil->stats.my_rx_sector, wil->stats.my_tx_sector, 487 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector); 488 } 489 490 /* 491 * Firmware reports EAPOL frame using WME event. 492 * Reconstruct Ethernet frame and deliver it via normal Rx 493 */ 494 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id, 495 void *d, int len) 496 { 497 struct net_device *ndev = wil_to_ndev(wil); 498 struct wmi_eapol_rx_event *evt = d; 499 u16 eapol_len = le16_to_cpu(evt->eapol_len); 500 int sz = eapol_len + ETH_HLEN; 501 struct sk_buff *skb; 502 struct ethhdr *eth; 503 504 wil_dbg_WMI(wil, "EAPOL len %d from %pM\n", eapol_len, 505 evt->src_mac); 506 507 if (eapol_len > 196) { /* TODO: revisit size limit */ 508 wil_err(wil, "EAPOL too large\n"); 509 return; 510 } 511 512 skb = alloc_skb(sz, GFP_KERNEL); 513 if (!skb) { 514 wil_err(wil, "Failed to allocate skb\n"); 515 return; 516 } 517 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN); 518 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN); 519 memcpy(eth->h_source, evt->src_mac, ETH_ALEN); 520 eth->h_proto = cpu_to_be16(ETH_P_PAE); 521 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len); 522 skb->protocol = eth_type_trans(skb, ndev); 523 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) { 524 ndev->stats.rx_packets++; 525 ndev->stats.rx_bytes += skb->len; 526 } else { 527 ndev->stats.rx_dropped++; 528 } 529 } 530 531 static const struct { 532 int eventid; 533 void (*handler)(struct wil6210_priv *wil, int eventid, 534 void *data, int data_len); 535 } wmi_evt_handlers[] = { 536 {WMI_READY_EVENTID, wmi_evt_ready}, 537 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready}, 538 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt}, 539 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete}, 540 {WMI_CONNECT_EVENTID, wmi_evt_connect}, 541 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect}, 542 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify}, 543 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx}, 544 }; 545 546 /* 547 * Run in IRQ context 548 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev 549 * that will be eventually handled by the @wmi_event_worker in the thread 550 * context of thread "wil6210_wmi" 551 */ 552 void wmi_recv_cmd(struct wil6210_priv *wil) 553 { 554 struct wil6210_mbox_ring_desc d_tail; 555 struct wil6210_mbox_hdr hdr; 556 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx; 557 struct pending_wmi_event *evt; 558 u8 *cmd; 559 void __iomem *src; 560 ulong flags; 561 562 for (;;) { 563 u16 len; 564 565 r->head = ioread32(wil->csr + HOST_MBOX + 566 offsetof(struct wil6210_mbox_ctl, rx.head)); 567 if (r->tail == r->head) 568 return; 569 570 /* read cmd from tail */ 571 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail), 572 sizeof(struct wil6210_mbox_ring_desc)); 573 if (d_tail.sync == 0) { 574 wil_err(wil, "Mbox evt not owned by FW?\n"); 575 return; 576 } 577 578 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) { 579 wil_err(wil, "Mbox evt at 0x%08x?\n", 580 le32_to_cpu(d_tail.addr)); 581 return; 582 } 583 584 len = le16_to_cpu(hdr.len); 585 src = wmi_buffer(wil, d_tail.addr) + 586 sizeof(struct wil6210_mbox_hdr); 587 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event, 588 event.wmi) + len, 4), 589 GFP_KERNEL); 590 if (!evt) { 591 wil_err(wil, "kmalloc for WMI event (%d) failed\n", 592 len); 593 return; 594 } 595 evt->event.hdr = hdr; 596 cmd = (void *)&evt->event.wmi; 597 wil_memcpy_fromio_32(cmd, src, len); 598 /* mark entry as empty */ 599 iowrite32(0, wil->csr + HOSTADDR(r->tail) + 600 offsetof(struct wil6210_mbox_ring_desc, sync)); 601 /* indicate */ 602 wil_dbg_WMI(wil, "Mbox evt %04x %04x %04x %02x\n", 603 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type), 604 hdr.flags); 605 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) && 606 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 607 wil_dbg_WMI(wil, "WMI event 0x%04x\n", 608 evt->event.wmi.id); 609 } 610 wil_hex_dump_WMI("evt ", DUMP_PREFIX_OFFSET, 16, 1, 611 &evt->event.hdr, sizeof(hdr) + len, true); 612 613 /* advance tail */ 614 r->tail = r->base + ((r->tail - r->base + 615 sizeof(struct wil6210_mbox_ring_desc)) % r->size); 616 iowrite32(r->tail, wil->csr + HOST_MBOX + 617 offsetof(struct wil6210_mbox_ctl, rx.tail)); 618 619 /* add to the pending list */ 620 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 621 list_add_tail(&evt->list, &wil->pending_wmi_ev); 622 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 623 { 624 int q = queue_work(wil->wmi_wq, 625 &wil->wmi_event_worker); 626 wil_dbg_WMI(wil, "queue_work -> %d\n", q); 627 } 628 } 629 } 630 631 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len, 632 u16 reply_id, void *reply, u8 reply_size, int to_msec) 633 { 634 int rc; 635 int remain; 636 637 mutex_lock(&wil->wmi_mutex); 638 639 rc = __wmi_send(wil, cmdid, buf, len); 640 if (rc) 641 goto out; 642 643 wil->reply_id = reply_id; 644 wil->reply_buf = reply; 645 wil->reply_size = reply_size; 646 remain = wait_for_completion_timeout(&wil->wmi_ready, 647 msecs_to_jiffies(to_msec)); 648 if (0 == remain) { 649 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n", 650 cmdid, reply_id, to_msec); 651 rc = -ETIME; 652 } else { 653 wil_dbg_WMI(wil, 654 "wmi_call(0x%04x->0x%04x) completed in %d msec\n", 655 cmdid, reply_id, 656 to_msec - jiffies_to_msecs(remain)); 657 } 658 wil->reply_id = 0; 659 wil->reply_buf = NULL; 660 wil->reply_size = 0; 661 out: 662 mutex_unlock(&wil->wmi_mutex); 663 664 return rc; 665 } 666 667 int wmi_echo(struct wil6210_priv *wil) 668 { 669 struct wmi_echo_cmd cmd = { 670 .value = cpu_to_le32(0x12345678), 671 }; 672 673 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd), 674 WMI_ECHO_RSP_EVENTID, NULL, 0, 20); 675 } 676 677 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr) 678 { 679 struct wmi_set_mac_address_cmd cmd; 680 681 memcpy(cmd.mac, addr, ETH_ALEN); 682 683 wil_dbg_WMI(wil, "Set MAC %pM\n", addr); 684 685 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd)); 686 } 687 688 int wmi_set_bcon(struct wil6210_priv *wil, int bi, u8 wmi_nettype) 689 { 690 struct wmi_bcon_ctrl_cmd cmd = { 691 .bcon_interval = cpu_to_le16(bi), 692 .network_type = wmi_nettype, 693 .disable_sec_offload = 1, 694 }; 695 696 if (!wil->secure_pcp) 697 cmd.disable_sec = 1; 698 699 return wmi_send(wil, WMI_BCON_CTRL_CMDID, &cmd, sizeof(cmd)); 700 } 701 702 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid) 703 { 704 struct wmi_set_ssid_cmd cmd = { 705 .ssid_len = cpu_to_le32(ssid_len), 706 }; 707 708 if (ssid_len > sizeof(cmd.ssid)) 709 return -EINVAL; 710 711 memcpy(cmd.ssid, ssid, ssid_len); 712 713 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd)); 714 } 715 716 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid) 717 { 718 int rc; 719 struct { 720 struct wil6210_mbox_hdr_wmi wmi; 721 struct wmi_set_ssid_cmd cmd; 722 } __packed reply; 723 int len; /* reply.cmd.ssid_len in CPU order */ 724 725 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID, 726 &reply, sizeof(reply), 20); 727 if (rc) 728 return rc; 729 730 len = le32_to_cpu(reply.cmd.ssid_len); 731 if (len > sizeof(reply.cmd.ssid)) 732 return -EINVAL; 733 734 *ssid_len = len; 735 memcpy(ssid, reply.cmd.ssid, len); 736 737 return 0; 738 } 739 740 int wmi_set_channel(struct wil6210_priv *wil, int channel) 741 { 742 struct wmi_set_pcp_channel_cmd cmd = { 743 .channel = channel - 1, 744 }; 745 746 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd)); 747 } 748 749 int wmi_get_channel(struct wil6210_priv *wil, int *channel) 750 { 751 int rc; 752 struct { 753 struct wil6210_mbox_hdr_wmi wmi; 754 struct wmi_set_pcp_channel_cmd cmd; 755 } __packed reply; 756 757 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0, 758 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20); 759 if (rc) 760 return rc; 761 762 if (reply.cmd.channel > 3) 763 return -EINVAL; 764 765 *channel = reply.cmd.channel + 1; 766 767 return 0; 768 } 769 770 int wmi_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb) 771 { 772 struct wmi_eapol_tx_cmd *cmd; 773 struct ethhdr *eth; 774 u16 eapol_len = skb->len - ETH_HLEN; 775 void *eapol = skb->data + ETH_HLEN; 776 uint i; 777 int rc; 778 779 skb_set_mac_header(skb, 0); 780 eth = eth_hdr(skb); 781 wil_dbg_WMI(wil, "EAPOL %d bytes to %pM\n", eapol_len, eth->h_dest); 782 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 783 if (memcmp(wil->dst_addr[i], eth->h_dest, ETH_ALEN) == 0) 784 goto found_dest; 785 } 786 787 return -EINVAL; 788 789 found_dest: 790 /* find out eapol data & len */ 791 cmd = kzalloc(sizeof(*cmd) + eapol_len, GFP_KERNEL); 792 if (!cmd) 793 return -EINVAL; 794 795 memcpy(cmd->dst_mac, eth->h_dest, ETH_ALEN); 796 cmd->eapol_len = cpu_to_le16(eapol_len); 797 memcpy(cmd->eapol, eapol, eapol_len); 798 rc = wmi_send(wil, WMI_EAPOL_TX_CMDID, cmd, sizeof(*cmd) + eapol_len); 799 kfree(cmd); 800 801 return rc; 802 } 803 804 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index, 805 const void *mac_addr) 806 { 807 struct wmi_delete_cipher_key_cmd cmd = { 808 .key_index = key_index, 809 }; 810 811 if (mac_addr) 812 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 813 814 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 815 } 816 817 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index, 818 const void *mac_addr, int key_len, const void *key) 819 { 820 struct wmi_add_cipher_key_cmd cmd = { 821 .key_index = key_index, 822 .key_usage = WMI_KEY_USE_PAIRWISE, 823 .key_len = key_len, 824 }; 825 826 if (!key || (key_len > sizeof(cmd.key))) 827 return -EINVAL; 828 829 memcpy(cmd.key, key, key_len); 830 if (mac_addr) 831 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 832 833 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 834 } 835 836 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie) 837 { 838 int rc; 839 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len; 840 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL); 841 if (!cmd) { 842 wil_err(wil, "kmalloc(%d) failed\n", len); 843 return -ENOMEM; 844 } 845 846 cmd->mgmt_frm_type = type; 847 /* BUG: FW API define ieLen as u8. Will fix FW */ 848 cmd->ie_len = cpu_to_le16(ie_len); 849 memcpy(cmd->ie_info, ie, ie_len); 850 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, &cmd, len); 851 kfree(cmd); 852 853 return rc; 854 } 855 856 void wmi_event_flush(struct wil6210_priv *wil) 857 { 858 struct pending_wmi_event *evt, *t; 859 860 wil_dbg_WMI(wil, "%s()\n", __func__); 861 862 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) { 863 list_del(&evt->list); 864 kfree(evt); 865 } 866 } 867 868 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id, 869 void *d, int len) 870 { 871 uint i; 872 873 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) { 874 if (wmi_evt_handlers[i].eventid == id) { 875 wmi_evt_handlers[i].handler(wil, id, d, len); 876 return true; 877 } 878 } 879 880 return false; 881 } 882 883 static void wmi_event_handle(struct wil6210_priv *wil, 884 struct wil6210_mbox_hdr *hdr) 885 { 886 u16 len = le16_to_cpu(hdr->len); 887 888 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) && 889 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 890 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]); 891 void *evt_data = (void *)(&wmi[1]); 892 u16 id = le16_to_cpu(wmi->id); 893 /* check if someone waits for this event */ 894 if (wil->reply_id && wil->reply_id == id) { 895 if (wil->reply_buf) { 896 memcpy(wil->reply_buf, wmi, 897 min(len, wil->reply_size)); 898 } else { 899 wmi_evt_call_handler(wil, id, evt_data, 900 len - sizeof(*wmi)); 901 } 902 wil_dbg_WMI(wil, "Complete WMI 0x%04x\n", id); 903 complete(&wil->wmi_ready); 904 return; 905 } 906 /* unsolicited event */ 907 /* search for handler */ 908 if (!wmi_evt_call_handler(wil, id, evt_data, 909 len - sizeof(*wmi))) { 910 wil_err(wil, "Unhandled event 0x%04x\n", id); 911 } 912 } else { 913 wil_err(wil, "Unknown event type\n"); 914 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1, 915 hdr, sizeof(*hdr) + len, true); 916 } 917 } 918 919 /* 920 * Retrieve next WMI event from the pending list 921 */ 922 static struct list_head *next_wmi_ev(struct wil6210_priv *wil) 923 { 924 ulong flags; 925 struct list_head *ret = NULL; 926 927 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 928 929 if (!list_empty(&wil->pending_wmi_ev)) { 930 ret = wil->pending_wmi_ev.next; 931 list_del(ret); 932 } 933 934 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 935 936 return ret; 937 } 938 939 /* 940 * Handler for the WMI events 941 */ 942 void wmi_event_worker(struct work_struct *work) 943 { 944 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 945 wmi_event_worker); 946 struct pending_wmi_event *evt; 947 struct list_head *lh; 948 949 while ((lh = next_wmi_ev(wil)) != NULL) { 950 evt = list_entry(lh, struct pending_wmi_event, list); 951 wmi_event_handle(wil, &evt->event.hdr); 952 kfree(evt); 953 } 954 } 955 956 void wmi_connect_worker(struct work_struct *work) 957 { 958 int rc; 959 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 960 wmi_connect_worker); 961 962 if (wil->pending_connect_cid < 0) { 963 wil_err(wil, "No connection pending\n"); 964 return; 965 } 966 967 wil_dbg_WMI(wil, "Configure for connection CID %d\n", 968 wil->pending_connect_cid); 969 970 rc = wil_vring_init_tx(wil, 0, WIL6210_TX_RING_SIZE, 971 wil->pending_connect_cid, 0); 972 wil->pending_connect_cid = -1; 973 if (rc == 0) 974 wil_link_on(wil); 975 } 976