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 24 /** 25 * WMI event receiving - theory of operations 26 * 27 * When firmware about to report WMI event, it fills memory area 28 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for 29 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler. 30 * 31 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the 32 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up 33 * and handles events within the @wmi_event_worker. Every event get detached 34 * from list, processed and deleted. 35 * 36 * Purpose for this mechanism is to release IRQ thread; otherwise, 37 * if WMI event handling involves another WMI command flow, this 2-nd flow 38 * won't be completed because of blocked IRQ thread. 39 */ 40 41 /** 42 * Addressing - theory of operations 43 * 44 * There are several buses present on the WIL6210 card. 45 * Same memory areas are visible at different address on 46 * the different busses. There are 3 main bus masters: 47 * - MAC CPU (ucode) 48 * - User CPU (firmware) 49 * - AHB (host) 50 * 51 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing 52 * AHB addresses starting from 0x880000 53 * 54 * Internally, firmware uses addresses that allows faster access but 55 * are invisible from the host. To read from these addresses, alternative 56 * AHB address must be used. 57 * 58 * Memory mapping 59 * Linker address PCI/Host address 60 * 0x880000 .. 0xa80000 2Mb BAR0 61 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM 62 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH 63 */ 64 65 /** 66 * @fw_mapping provides memory remapping table 67 */ 68 static const struct { 69 u32 from; /* linker address - from, inclusive */ 70 u32 to; /* linker address - to, exclusive */ 71 u32 host; /* PCI/Host address - BAR0 + 0x880000 */ 72 } fw_mapping[] = { 73 {0x000000, 0x040000, 0x8c0000}, /* FW code RAM 256k */ 74 {0x800000, 0x808000, 0x900000}, /* FW data RAM 32k */ 75 {0x840000, 0x860000, 0x908000}, /* peripheral data RAM 128k/96k used */ 76 {0x880000, 0x88a000, 0x880000}, /* various RGF */ 77 {0x8c0000, 0x932000, 0x8c0000}, /* trivial mapping for upper area */ 78 /* 79 * 920000..930000 ucode code RAM 80 * 930000..932000 ucode data RAM 81 */ 82 }; 83 84 /** 85 * return AHB address for given firmware/ucode internal (linker) address 86 * @x - internal address 87 * If address have no valid AHB mapping, return 0 88 */ 89 static u32 wmi_addr_remap(u32 x) 90 { 91 uint i; 92 93 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) { 94 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to)) 95 return x + fw_mapping[i].host - fw_mapping[i].from; 96 } 97 98 return 0; 99 } 100 101 /** 102 * Check address validity for WMI buffer; remap if needed 103 * @ptr - internal (linker) fw/ucode address 104 * 105 * Valid buffer should be DWORD aligned 106 * 107 * return address for accessing buffer from the host; 108 * if buffer is not valid, return NULL. 109 */ 110 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_) 111 { 112 u32 off; 113 u32 ptr = le32_to_cpu(ptr_); 114 115 if (ptr % 4) 116 return NULL; 117 118 ptr = wmi_addr_remap(ptr); 119 if (ptr < WIL6210_FW_HOST_OFF) 120 return NULL; 121 122 off = HOSTADDR(ptr); 123 if (off > WIL6210_MEM_SIZE - 4) 124 return NULL; 125 126 return wil->csr + off; 127 } 128 129 /** 130 * Check address validity 131 */ 132 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr) 133 { 134 u32 off; 135 136 if (ptr % 4) 137 return NULL; 138 139 if (ptr < WIL6210_FW_HOST_OFF) 140 return NULL; 141 142 off = HOSTADDR(ptr); 143 if (off > WIL6210_MEM_SIZE - 4) 144 return NULL; 145 146 return wil->csr + off; 147 } 148 149 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr, 150 struct wil6210_mbox_hdr *hdr) 151 { 152 void __iomem *src = wmi_buffer(wil, ptr); 153 if (!src) 154 return -EINVAL; 155 156 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr)); 157 158 return 0; 159 } 160 161 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len) 162 { 163 struct { 164 struct wil6210_mbox_hdr hdr; 165 struct wil6210_mbox_hdr_wmi wmi; 166 } __packed cmd = { 167 .hdr = { 168 .type = WIL_MBOX_HDR_TYPE_WMI, 169 .flags = 0, 170 .len = cpu_to_le16(sizeof(cmd.wmi) + len), 171 }, 172 .wmi = { 173 .id = cpu_to_le16(cmdid), 174 .info1 = 0, 175 }, 176 }; 177 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx; 178 struct wil6210_mbox_ring_desc d_head; 179 u32 next_head; 180 void __iomem *dst; 181 void __iomem *head = wmi_addr(wil, r->head); 182 uint retry; 183 184 if (sizeof(cmd) + len > r->entry_size) { 185 wil_err(wil, "WMI size too large: %d bytes, max is %d\n", 186 (int)(sizeof(cmd) + len), r->entry_size); 187 return -ERANGE; 188 } 189 190 might_sleep(); 191 192 if (!test_bit(wil_status_fwready, &wil->status)) { 193 wil_err(wil, "FW not ready\n"); 194 return -EAGAIN; 195 } 196 197 if (!head) { 198 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head); 199 return -EINVAL; 200 } 201 /* read Tx head till it is not busy */ 202 for (retry = 5; retry > 0; retry--) { 203 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head)); 204 if (d_head.sync == 0) 205 break; 206 msleep(20); 207 } 208 if (d_head.sync != 0) { 209 wil_err(wil, "WMI head busy\n"); 210 return -EBUSY; 211 } 212 /* next head */ 213 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size); 214 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head); 215 /* wait till FW finish with previous command */ 216 for (retry = 5; retry > 0; retry--) { 217 r->tail = ioread32(wil->csr + HOST_MBOX + 218 offsetof(struct wil6210_mbox_ctl, tx.tail)); 219 if (next_head != r->tail) 220 break; 221 msleep(20); 222 } 223 if (next_head == r->tail) { 224 wil_err(wil, "WMI ring full\n"); 225 return -EBUSY; 226 } 227 dst = wmi_buffer(wil, d_head.addr); 228 if (!dst) { 229 wil_err(wil, "invalid WMI buffer: 0x%08x\n", 230 le32_to_cpu(d_head.addr)); 231 return -EINVAL; 232 } 233 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq); 234 /* set command */ 235 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len); 236 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd, 237 sizeof(cmd), true); 238 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf, 239 len, true); 240 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd)); 241 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len); 242 /* mark entry as full */ 243 iowrite32(1, wil->csr + HOSTADDR(r->head) + 244 offsetof(struct wil6210_mbox_ring_desc, sync)); 245 /* advance next ptr */ 246 iowrite32(r->head = next_head, wil->csr + HOST_MBOX + 247 offsetof(struct wil6210_mbox_ctl, tx.head)); 248 249 /* interrupt to FW */ 250 iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT); 251 252 return 0; 253 } 254 255 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len) 256 { 257 int rc; 258 259 mutex_lock(&wil->wmi_mutex); 260 rc = __wmi_send(wil, cmdid, buf, len); 261 mutex_unlock(&wil->wmi_mutex); 262 263 return rc; 264 } 265 266 /*=== Event handlers ===*/ 267 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len) 268 { 269 struct net_device *ndev = wil_to_ndev(wil); 270 struct wireless_dev *wdev = wil->wdev; 271 struct wmi_ready_event *evt = d; 272 wil->fw_version = le32_to_cpu(evt->sw_version); 273 wil->n_mids = evt->numof_additional_mids; 274 275 wil_dbg_wmi(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version, 276 evt->mac, wil->n_mids); 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", wil->fw_version); 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; 326 327 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame, 328 d_len, signal, GFP_KERNEL); 329 if (bss) { 330 wil_dbg_wmi(wil, "Added BSS %pM\n", 331 rx_mgmt_frame->bssid); 332 cfg80211_put_bss(wiphy, bss); 333 } else { 334 wil_err(wil, "cfg80211_inform_bss() failed\n"); 335 } 336 } else { 337 cfg80211_rx_mgmt(wil->wdev, freq, signal, 338 (void *)rx_mgmt_frame, d_len, GFP_KERNEL); 339 } 340 } 341 342 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id, 343 void *d, int len) 344 { 345 if (wil->scan_request) { 346 struct wmi_scan_complete_event *data = d; 347 bool aborted = (data->status != 0); 348 349 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status); 350 cfg80211_scan_done(wil->scan_request, aborted); 351 wil->scan_request = NULL; 352 } else { 353 wil_err(wil, "SCAN_COMPLETE while not scanning\n"); 354 } 355 } 356 357 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len) 358 { 359 struct net_device *ndev = wil_to_ndev(wil); 360 struct wireless_dev *wdev = wil->wdev; 361 struct wmi_connect_event *evt = d; 362 int ch; /* channel number */ 363 struct station_info sinfo; 364 u8 *assoc_req_ie, *assoc_resp_ie; 365 size_t assoc_req_ielen, assoc_resp_ielen; 366 /* capinfo(u16) + listen_interval(u16) + IEs */ 367 const size_t assoc_req_ie_offset = sizeof(u16) * 2; 368 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */ 369 const size_t assoc_resp_ie_offset = sizeof(u16) * 3; 370 371 if (len < sizeof(*evt)) { 372 wil_err(wil, "Connect event too short : %d bytes\n", len); 373 return; 374 } 375 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len + 376 evt->assoc_resp_len) { 377 wil_err(wil, 378 "Connect event corrupted : %d != %d + %d + %d + %d\n", 379 len, (int)sizeof(*evt), evt->beacon_ie_len, 380 evt->assoc_req_len, evt->assoc_resp_len); 381 return; 382 } 383 ch = evt->channel + 1; 384 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n", 385 evt->bssid, ch, evt->cid); 386 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1, 387 evt->assoc_info, len - sizeof(*evt), true); 388 389 /* figure out IE's */ 390 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len + 391 assoc_req_ie_offset]; 392 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset; 393 if (evt->assoc_req_len <= assoc_req_ie_offset) { 394 assoc_req_ie = NULL; 395 assoc_req_ielen = 0; 396 } 397 398 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len + 399 evt->assoc_req_len + 400 assoc_resp_ie_offset]; 401 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset; 402 if (evt->assoc_resp_len <= assoc_resp_ie_offset) { 403 assoc_resp_ie = NULL; 404 assoc_resp_ielen = 0; 405 } 406 407 if ((wdev->iftype == NL80211_IFTYPE_STATION) || 408 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) { 409 if (wdev->sme_state != CFG80211_SME_CONNECTING) { 410 wil_err(wil, "Not in connecting state\n"); 411 return; 412 } 413 del_timer_sync(&wil->connect_timer); 414 cfg80211_connect_result(ndev, evt->bssid, 415 assoc_req_ie, assoc_req_ielen, 416 assoc_resp_ie, assoc_resp_ielen, 417 WLAN_STATUS_SUCCESS, GFP_KERNEL); 418 419 } else if ((wdev->iftype == NL80211_IFTYPE_AP) || 420 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { 421 memset(&sinfo, 0, sizeof(sinfo)); 422 423 sinfo.generation = wil->sinfo_gen++; 424 425 if (assoc_req_ie) { 426 sinfo.assoc_req_ies = assoc_req_ie; 427 sinfo.assoc_req_ies_len = assoc_req_ielen; 428 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 429 } 430 431 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL); 432 } 433 set_bit(wil_status_fwconnected, &wil->status); 434 435 /* FIXME FW can transmit only ucast frames to peer */ 436 /* FIXME real ring_id instead of hard coded 0 */ 437 memcpy(wil->dst_addr[0], evt->bssid, ETH_ALEN); 438 439 wil->pending_connect_cid = evt->cid; 440 queue_work(wil->wmi_wq_conn, &wil->connect_worker); 441 } 442 443 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id, 444 void *d, int len) 445 { 446 struct wmi_disconnect_event *evt = d; 447 448 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n", 449 evt->bssid, 450 evt->protocol_reason_status, evt->disconnect_reason); 451 452 wil->sinfo_gen++; 453 454 wil6210_disconnect(wil, evt->bssid); 455 } 456 457 static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len) 458 { 459 struct wmi_notify_req_done_event *evt = d; 460 461 if (len < sizeof(*evt)) { 462 wil_err(wil, "Short NOTIFY event\n"); 463 return; 464 } 465 466 wil->stats.tsf = le64_to_cpu(evt->tsf); 467 wil->stats.snr = le32_to_cpu(evt->snr_val); 468 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs); 469 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector); 470 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector); 471 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector); 472 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector); 473 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n" 474 "BF status 0x%08x SNR 0x%08x\n" 475 "Tx Tpt %d goodput %d Rx goodput %d\n" 476 "Sectors(rx:tx) my %d:%d peer %d:%d\n", 477 wil->stats.bf_mcs, wil->stats.tsf, evt->status, 478 wil->stats.snr, le32_to_cpu(evt->tx_tpt), 479 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput), 480 wil->stats.my_rx_sector, wil->stats.my_tx_sector, 481 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector); 482 } 483 484 /* 485 * Firmware reports EAPOL frame using WME event. 486 * Reconstruct Ethernet frame and deliver it via normal Rx 487 */ 488 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id, 489 void *d, int len) 490 { 491 struct net_device *ndev = wil_to_ndev(wil); 492 struct wmi_eapol_rx_event *evt = d; 493 u16 eapol_len = le16_to_cpu(evt->eapol_len); 494 int sz = eapol_len + ETH_HLEN; 495 struct sk_buff *skb; 496 struct ethhdr *eth; 497 498 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len, 499 evt->src_mac); 500 501 if (eapol_len > 196) { /* TODO: revisit size limit */ 502 wil_err(wil, "EAPOL too large\n"); 503 return; 504 } 505 506 skb = alloc_skb(sz, GFP_KERNEL); 507 if (!skb) { 508 wil_err(wil, "Failed to allocate skb\n"); 509 return; 510 } 511 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN); 512 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN); 513 memcpy(eth->h_source, evt->src_mac, ETH_ALEN); 514 eth->h_proto = cpu_to_be16(ETH_P_PAE); 515 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len); 516 skb->protocol = eth_type_trans(skb, ndev); 517 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) { 518 ndev->stats.rx_packets++; 519 ndev->stats.rx_bytes += skb->len; 520 } else { 521 ndev->stats.rx_dropped++; 522 } 523 } 524 525 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len) 526 { 527 struct net_device *ndev = wil_to_ndev(wil); 528 struct wmi_data_port_open_event *evt = d; 529 530 wil_dbg_wmi(wil, "Link UP for CID %d\n", evt->cid); 531 532 netif_carrier_on(ndev); 533 } 534 535 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len) 536 { 537 struct net_device *ndev = wil_to_ndev(wil); 538 struct wmi_wbe_link_down_event *evt = d; 539 540 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n", 541 evt->cid, le32_to_cpu(evt->reason)); 542 543 netif_carrier_off(ndev); 544 } 545 546 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d, 547 int len) 548 { 549 struct wmi_vring_ba_status_event *evt = d; 550 551 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n", 552 evt->ringid, evt->status ? "N/A" : "OK", evt->agg_wsize, 553 __le16_to_cpu(evt->ba_timeout)); 554 } 555 556 static const struct { 557 int eventid; 558 void (*handler)(struct wil6210_priv *wil, int eventid, 559 void *data, int data_len); 560 } wmi_evt_handlers[] = { 561 {WMI_READY_EVENTID, wmi_evt_ready}, 562 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready}, 563 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt}, 564 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete}, 565 {WMI_CONNECT_EVENTID, wmi_evt_connect}, 566 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect}, 567 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify}, 568 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx}, 569 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup}, 570 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown}, 571 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status}, 572 }; 573 574 /* 575 * Run in IRQ context 576 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev 577 * that will be eventually handled by the @wmi_event_worker in the thread 578 * context of thread "wil6210_wmi" 579 */ 580 void wmi_recv_cmd(struct wil6210_priv *wil) 581 { 582 struct wil6210_mbox_ring_desc d_tail; 583 struct wil6210_mbox_hdr hdr; 584 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx; 585 struct pending_wmi_event *evt; 586 u8 *cmd; 587 void __iomem *src; 588 ulong flags; 589 590 if (!test_bit(wil_status_reset_done, &wil->status)) { 591 wil_err(wil, "Reset not completed\n"); 592 return; 593 } 594 595 for (;;) { 596 u16 len; 597 598 r->head = ioread32(wil->csr + HOST_MBOX + 599 offsetof(struct wil6210_mbox_ctl, rx.head)); 600 if (r->tail == r->head) 601 return; 602 603 /* read cmd from tail */ 604 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail), 605 sizeof(struct wil6210_mbox_ring_desc)); 606 if (d_tail.sync == 0) { 607 wil_err(wil, "Mbox evt not owned by FW?\n"); 608 return; 609 } 610 611 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) { 612 wil_err(wil, "Mbox evt at 0x%08x?\n", 613 le32_to_cpu(d_tail.addr)); 614 return; 615 } 616 617 len = le16_to_cpu(hdr.len); 618 src = wmi_buffer(wil, d_tail.addr) + 619 sizeof(struct wil6210_mbox_hdr); 620 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event, 621 event.wmi) + len, 4), 622 GFP_KERNEL); 623 if (!evt) 624 return; 625 626 evt->event.hdr = hdr; 627 cmd = (void *)&evt->event.wmi; 628 wil_memcpy_fromio_32(cmd, src, len); 629 /* mark entry as empty */ 630 iowrite32(0, wil->csr + HOSTADDR(r->tail) + 631 offsetof(struct wil6210_mbox_ring_desc, sync)); 632 /* indicate */ 633 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n", 634 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type), 635 hdr.flags); 636 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) && 637 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 638 wil_dbg_wmi(wil, "WMI event 0x%04x\n", 639 evt->event.wmi.id); 640 } 641 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1, 642 &evt->event.hdr, sizeof(hdr) + len, true); 643 644 /* advance tail */ 645 r->tail = r->base + ((r->tail - r->base + 646 sizeof(struct wil6210_mbox_ring_desc)) % r->size); 647 iowrite32(r->tail, wil->csr + HOST_MBOX + 648 offsetof(struct wil6210_mbox_ctl, rx.tail)); 649 650 /* add to the pending list */ 651 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 652 list_add_tail(&evt->list, &wil->pending_wmi_ev); 653 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 654 { 655 int q = queue_work(wil->wmi_wq, 656 &wil->wmi_event_worker); 657 wil_dbg_wmi(wil, "queue_work -> %d\n", q); 658 } 659 } 660 } 661 662 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len, 663 u16 reply_id, void *reply, u8 reply_size, int to_msec) 664 { 665 int rc; 666 int remain; 667 668 mutex_lock(&wil->wmi_mutex); 669 670 rc = __wmi_send(wil, cmdid, buf, len); 671 if (rc) 672 goto out; 673 674 wil->reply_id = reply_id; 675 wil->reply_buf = reply; 676 wil->reply_size = reply_size; 677 remain = wait_for_completion_timeout(&wil->wmi_ready, 678 msecs_to_jiffies(to_msec)); 679 if (0 == remain) { 680 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n", 681 cmdid, reply_id, to_msec); 682 rc = -ETIME; 683 } else { 684 wil_dbg_wmi(wil, 685 "wmi_call(0x%04x->0x%04x) completed in %d msec\n", 686 cmdid, reply_id, 687 to_msec - jiffies_to_msecs(remain)); 688 } 689 wil->reply_id = 0; 690 wil->reply_buf = NULL; 691 wil->reply_size = 0; 692 out: 693 mutex_unlock(&wil->wmi_mutex); 694 695 return rc; 696 } 697 698 int wmi_echo(struct wil6210_priv *wil) 699 { 700 struct wmi_echo_cmd cmd = { 701 .value = cpu_to_le32(0x12345678), 702 }; 703 704 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd), 705 WMI_ECHO_RSP_EVENTID, NULL, 0, 20); 706 } 707 708 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr) 709 { 710 struct wmi_set_mac_address_cmd cmd; 711 712 memcpy(cmd.mac, addr, ETH_ALEN); 713 714 wil_dbg_wmi(wil, "Set MAC %pM\n", addr); 715 716 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd)); 717 } 718 719 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan) 720 { 721 int rc; 722 723 struct wmi_pcp_start_cmd cmd = { 724 .bcon_interval = cpu_to_le16(bi), 725 .network_type = wmi_nettype, 726 .disable_sec_offload = 1, 727 .channel = chan, 728 }; 729 struct { 730 struct wil6210_mbox_hdr_wmi wmi; 731 struct wmi_pcp_started_event evt; 732 } __packed reply; 733 734 if (!wil->secure_pcp) 735 cmd.disable_sec = 1; 736 737 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd), 738 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 100); 739 if (rc) 740 return rc; 741 742 if (reply.evt.status != WMI_FW_STATUS_SUCCESS) 743 rc = -EINVAL; 744 745 return rc; 746 } 747 748 int wmi_pcp_stop(struct wil6210_priv *wil) 749 { 750 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0, 751 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20); 752 } 753 754 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid) 755 { 756 struct wmi_set_ssid_cmd cmd = { 757 .ssid_len = cpu_to_le32(ssid_len), 758 }; 759 760 if (ssid_len > sizeof(cmd.ssid)) 761 return -EINVAL; 762 763 memcpy(cmd.ssid, ssid, ssid_len); 764 765 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd)); 766 } 767 768 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid) 769 { 770 int rc; 771 struct { 772 struct wil6210_mbox_hdr_wmi wmi; 773 struct wmi_set_ssid_cmd cmd; 774 } __packed reply; 775 int len; /* reply.cmd.ssid_len in CPU order */ 776 777 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID, 778 &reply, sizeof(reply), 20); 779 if (rc) 780 return rc; 781 782 len = le32_to_cpu(reply.cmd.ssid_len); 783 if (len > sizeof(reply.cmd.ssid)) 784 return -EINVAL; 785 786 *ssid_len = len; 787 memcpy(ssid, reply.cmd.ssid, len); 788 789 return 0; 790 } 791 792 int wmi_set_channel(struct wil6210_priv *wil, int channel) 793 { 794 struct wmi_set_pcp_channel_cmd cmd = { 795 .channel = channel - 1, 796 }; 797 798 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd)); 799 } 800 801 int wmi_get_channel(struct wil6210_priv *wil, int *channel) 802 { 803 int rc; 804 struct { 805 struct wil6210_mbox_hdr_wmi wmi; 806 struct wmi_set_pcp_channel_cmd cmd; 807 } __packed reply; 808 809 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0, 810 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20); 811 if (rc) 812 return rc; 813 814 if (reply.cmd.channel > 3) 815 return -EINVAL; 816 817 *channel = reply.cmd.channel + 1; 818 819 return 0; 820 } 821 822 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel) 823 { 824 struct wmi_p2p_cfg_cmd cmd = { 825 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD, 826 .channel = channel - 1, 827 }; 828 829 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd)); 830 } 831 832 int wmi_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb) 833 { 834 struct wmi_eapol_tx_cmd *cmd; 835 struct ethhdr *eth; 836 u16 eapol_len = skb->len - ETH_HLEN; 837 void *eapol = skb->data + ETH_HLEN; 838 uint i; 839 int rc; 840 841 skb_set_mac_header(skb, 0); 842 eth = eth_hdr(skb); 843 wil_dbg_wmi(wil, "EAPOL %d bytes to %pM\n", eapol_len, eth->h_dest); 844 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 845 if (memcmp(wil->dst_addr[i], eth->h_dest, ETH_ALEN) == 0) 846 goto found_dest; 847 } 848 849 return -EINVAL; 850 851 found_dest: 852 /* find out eapol data & len */ 853 cmd = kzalloc(sizeof(*cmd) + eapol_len, GFP_KERNEL); 854 if (!cmd) 855 return -EINVAL; 856 857 memcpy(cmd->dst_mac, eth->h_dest, ETH_ALEN); 858 cmd->eapol_len = cpu_to_le16(eapol_len); 859 memcpy(cmd->eapol, eapol, eapol_len); 860 rc = wmi_send(wil, WMI_EAPOL_TX_CMDID, cmd, sizeof(*cmd) + eapol_len); 861 kfree(cmd); 862 863 return rc; 864 } 865 866 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index, 867 const void *mac_addr) 868 { 869 struct wmi_delete_cipher_key_cmd cmd = { 870 .key_index = key_index, 871 }; 872 873 if (mac_addr) 874 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 875 876 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 877 } 878 879 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index, 880 const void *mac_addr, int key_len, const void *key) 881 { 882 struct wmi_add_cipher_key_cmd cmd = { 883 .key_index = key_index, 884 .key_usage = WMI_KEY_USE_PAIRWISE, 885 .key_len = key_len, 886 }; 887 888 if (!key || (key_len > sizeof(cmd.key))) 889 return -EINVAL; 890 891 memcpy(cmd.key, key, key_len); 892 if (mac_addr) 893 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); 894 895 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); 896 } 897 898 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie) 899 { 900 int rc; 901 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len; 902 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL); 903 if (!cmd) 904 return -ENOMEM; 905 906 cmd->mgmt_frm_type = type; 907 /* BUG: FW API define ieLen as u8. Will fix FW */ 908 cmd->ie_len = cpu_to_le16(ie_len); 909 memcpy(cmd->ie_info, ie, ie_len); 910 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len); 911 kfree(cmd); 912 913 return rc; 914 } 915 916 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring) 917 { 918 struct wireless_dev *wdev = wil->wdev; 919 struct net_device *ndev = wil_to_ndev(wil); 920 struct wmi_cfg_rx_chain_cmd cmd = { 921 .action = WMI_RX_CHAIN_ADD, 922 .rx_sw_ring = { 923 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN), 924 .ring_mem_base = cpu_to_le64(vring->pa), 925 .ring_size = cpu_to_le16(vring->size), 926 }, 927 .mid = 0, /* TODO - what is it? */ 928 .decap_trans_type = WMI_DECAP_TYPE_802_3, 929 }; 930 struct { 931 struct wil6210_mbox_hdr_wmi wmi; 932 struct wmi_cfg_rx_chain_done_event evt; 933 } __packed evt; 934 int rc; 935 936 if (wdev->iftype == NL80211_IFTYPE_MONITOR) { 937 struct ieee80211_channel *ch = wdev->preset_chandef.chan; 938 939 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON); 940 if (ch) 941 cmd.sniffer_cfg.channel = ch->hw_value - 1; 942 cmd.sniffer_cfg.phy_info_mode = 943 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP); 944 cmd.sniffer_cfg.phy_support = 945 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL) 946 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP); 947 } 948 /* typical time for secure PCP is 840ms */ 949 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd), 950 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000); 951 if (rc) 952 return rc; 953 954 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr); 955 956 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n", 957 le32_to_cpu(evt.evt.status), vring->hwtail); 958 959 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS) 960 rc = -EINVAL; 961 962 return rc; 963 } 964 965 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r) 966 { 967 int rc; 968 struct wmi_temp_sense_cmd cmd = { 969 .measure_marlon_m_en = cpu_to_le32(!!t_m), 970 .measure_marlon_r_en = cpu_to_le32(!!t_r), 971 }; 972 struct { 973 struct wil6210_mbox_hdr_wmi wmi; 974 struct wmi_temp_sense_done_event evt; 975 } __packed reply; 976 977 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd), 978 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100); 979 if (rc) 980 return rc; 981 982 if (t_m) 983 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000); 984 if (t_r) 985 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000); 986 987 return 0; 988 } 989 990 void wmi_event_flush(struct wil6210_priv *wil) 991 { 992 struct pending_wmi_event *evt, *t; 993 994 wil_dbg_wmi(wil, "%s()\n", __func__); 995 996 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) { 997 list_del(&evt->list); 998 kfree(evt); 999 } 1000 } 1001 1002 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id, 1003 void *d, int len) 1004 { 1005 uint i; 1006 1007 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) { 1008 if (wmi_evt_handlers[i].eventid == id) { 1009 wmi_evt_handlers[i].handler(wil, id, d, len); 1010 return true; 1011 } 1012 } 1013 1014 return false; 1015 } 1016 1017 static void wmi_event_handle(struct wil6210_priv *wil, 1018 struct wil6210_mbox_hdr *hdr) 1019 { 1020 u16 len = le16_to_cpu(hdr->len); 1021 1022 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) && 1023 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { 1024 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]); 1025 void *evt_data = (void *)(&wmi[1]); 1026 u16 id = le16_to_cpu(wmi->id); 1027 /* check if someone waits for this event */ 1028 if (wil->reply_id && wil->reply_id == id) { 1029 if (wil->reply_buf) { 1030 memcpy(wil->reply_buf, wmi, 1031 min(len, wil->reply_size)); 1032 } else { 1033 wmi_evt_call_handler(wil, id, evt_data, 1034 len - sizeof(*wmi)); 1035 } 1036 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id); 1037 complete(&wil->wmi_ready); 1038 return; 1039 } 1040 /* unsolicited event */ 1041 /* search for handler */ 1042 if (!wmi_evt_call_handler(wil, id, evt_data, 1043 len - sizeof(*wmi))) { 1044 wil_err(wil, "Unhandled event 0x%04x\n", id); 1045 } 1046 } else { 1047 wil_err(wil, "Unknown event type\n"); 1048 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1, 1049 hdr, sizeof(*hdr) + len, true); 1050 } 1051 } 1052 1053 /* 1054 * Retrieve next WMI event from the pending list 1055 */ 1056 static struct list_head *next_wmi_ev(struct wil6210_priv *wil) 1057 { 1058 ulong flags; 1059 struct list_head *ret = NULL; 1060 1061 spin_lock_irqsave(&wil->wmi_ev_lock, flags); 1062 1063 if (!list_empty(&wil->pending_wmi_ev)) { 1064 ret = wil->pending_wmi_ev.next; 1065 list_del(ret); 1066 } 1067 1068 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); 1069 1070 return ret; 1071 } 1072 1073 /* 1074 * Handler for the WMI events 1075 */ 1076 void wmi_event_worker(struct work_struct *work) 1077 { 1078 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 1079 wmi_event_worker); 1080 struct pending_wmi_event *evt; 1081 struct list_head *lh; 1082 1083 while ((lh = next_wmi_ev(wil)) != NULL) { 1084 evt = list_entry(lh, struct pending_wmi_event, list); 1085 wmi_event_handle(wil, &evt->event.hdr); 1086 kfree(evt); 1087 } 1088 } 1089