1 /* 2 * Copyright (c) 2010-2011 Atheros Communications 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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 18 19 #include "htc.h" 20 21 MODULE_AUTHOR("Atheros Communications"); 22 MODULE_LICENSE("Dual BSD/GPL"); 23 MODULE_DESCRIPTION("Atheros driver 802.11n HTC based wireless devices"); 24 25 static unsigned int ath9k_debug = ATH_DBG_DEFAULT; 26 module_param_named(debug, ath9k_debug, uint, 0); 27 MODULE_PARM_DESC(debug, "Debugging mask"); 28 29 int htc_modparam_nohwcrypt; 30 module_param_named(nohwcrypt, htc_modparam_nohwcrypt, int, 0444); 31 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); 32 33 static int ath9k_htc_btcoex_enable; 34 module_param_named(btcoex_enable, ath9k_htc_btcoex_enable, int, 0444); 35 MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence"); 36 37 #define CHAN2G(_freq, _idx) { \ 38 .center_freq = (_freq), \ 39 .hw_value = (_idx), \ 40 .max_power = 20, \ 41 } 42 43 #define CHAN5G(_freq, _idx) { \ 44 .band = IEEE80211_BAND_5GHZ, \ 45 .center_freq = (_freq), \ 46 .hw_value = (_idx), \ 47 .max_power = 20, \ 48 } 49 50 static struct ieee80211_channel ath9k_2ghz_channels[] = { 51 CHAN2G(2412, 0), /* Channel 1 */ 52 CHAN2G(2417, 1), /* Channel 2 */ 53 CHAN2G(2422, 2), /* Channel 3 */ 54 CHAN2G(2427, 3), /* Channel 4 */ 55 CHAN2G(2432, 4), /* Channel 5 */ 56 CHAN2G(2437, 5), /* Channel 6 */ 57 CHAN2G(2442, 6), /* Channel 7 */ 58 CHAN2G(2447, 7), /* Channel 8 */ 59 CHAN2G(2452, 8), /* Channel 9 */ 60 CHAN2G(2457, 9), /* Channel 10 */ 61 CHAN2G(2462, 10), /* Channel 11 */ 62 CHAN2G(2467, 11), /* Channel 12 */ 63 CHAN2G(2472, 12), /* Channel 13 */ 64 CHAN2G(2484, 13), /* Channel 14 */ 65 }; 66 67 static struct ieee80211_channel ath9k_5ghz_channels[] = { 68 /* _We_ call this UNII 1 */ 69 CHAN5G(5180, 14), /* Channel 36 */ 70 CHAN5G(5200, 15), /* Channel 40 */ 71 CHAN5G(5220, 16), /* Channel 44 */ 72 CHAN5G(5240, 17), /* Channel 48 */ 73 /* _We_ call this UNII 2 */ 74 CHAN5G(5260, 18), /* Channel 52 */ 75 CHAN5G(5280, 19), /* Channel 56 */ 76 CHAN5G(5300, 20), /* Channel 60 */ 77 CHAN5G(5320, 21), /* Channel 64 */ 78 /* _We_ call this "Middle band" */ 79 CHAN5G(5500, 22), /* Channel 100 */ 80 CHAN5G(5520, 23), /* Channel 104 */ 81 CHAN5G(5540, 24), /* Channel 108 */ 82 CHAN5G(5560, 25), /* Channel 112 */ 83 CHAN5G(5580, 26), /* Channel 116 */ 84 CHAN5G(5600, 27), /* Channel 120 */ 85 CHAN5G(5620, 28), /* Channel 124 */ 86 CHAN5G(5640, 29), /* Channel 128 */ 87 CHAN5G(5660, 30), /* Channel 132 */ 88 CHAN5G(5680, 31), /* Channel 136 */ 89 CHAN5G(5700, 32), /* Channel 140 */ 90 /* _We_ call this UNII 3 */ 91 CHAN5G(5745, 33), /* Channel 149 */ 92 CHAN5G(5765, 34), /* Channel 153 */ 93 CHAN5G(5785, 35), /* Channel 157 */ 94 CHAN5G(5805, 36), /* Channel 161 */ 95 CHAN5G(5825, 37), /* Channel 165 */ 96 }; 97 98 /* Atheros hardware rate code addition for short premble */ 99 #define SHPCHECK(__hw_rate, __flags) \ 100 ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04) : 0) 101 102 #define RATE(_bitrate, _hw_rate, _flags) { \ 103 .bitrate = (_bitrate), \ 104 .flags = (_flags), \ 105 .hw_value = (_hw_rate), \ 106 .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \ 107 } 108 109 static struct ieee80211_rate ath9k_legacy_rates[] = { 110 RATE(10, 0x1b, 0), 111 RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp : 0x1e */ 112 RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp: 0x1d */ 113 RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), /* short: 0x1c */ 114 RATE(60, 0x0b, 0), 115 RATE(90, 0x0f, 0), 116 RATE(120, 0x0a, 0), 117 RATE(180, 0x0e, 0), 118 RATE(240, 0x09, 0), 119 RATE(360, 0x0d, 0), 120 RATE(480, 0x08, 0), 121 RATE(540, 0x0c, 0), 122 }; 123 124 #ifdef CONFIG_MAC80211_LEDS 125 static const struct ieee80211_tpt_blink ath9k_htc_tpt_blink[] = { 126 { .throughput = 0 * 1024, .blink_time = 334 }, 127 { .throughput = 1 * 1024, .blink_time = 260 }, 128 { .throughput = 5 * 1024, .blink_time = 220 }, 129 { .throughput = 10 * 1024, .blink_time = 190 }, 130 { .throughput = 20 * 1024, .blink_time = 170 }, 131 { .throughput = 50 * 1024, .blink_time = 150 }, 132 { .throughput = 70 * 1024, .blink_time = 130 }, 133 { .throughput = 100 * 1024, .blink_time = 110 }, 134 { .throughput = 200 * 1024, .blink_time = 80 }, 135 { .throughput = 300 * 1024, .blink_time = 50 }, 136 }; 137 #endif 138 139 static int ath9k_htc_wait_for_target(struct ath9k_htc_priv *priv) 140 { 141 int time_left; 142 143 if (atomic_read(&priv->htc->tgt_ready) > 0) { 144 atomic_dec(&priv->htc->tgt_ready); 145 return 0; 146 } 147 148 /* Firmware can take up to 50ms to get ready, to be safe use 1 second */ 149 time_left = wait_for_completion_timeout(&priv->htc->target_wait, HZ); 150 if (!time_left) { 151 dev_err(priv->dev, "ath9k_htc: Target is unresponsive\n"); 152 return -ETIMEDOUT; 153 } 154 155 atomic_dec(&priv->htc->tgt_ready); 156 157 return 0; 158 } 159 160 static void ath9k_deinit_priv(struct ath9k_htc_priv *priv) 161 { 162 ath9k_hw_deinit(priv->ah); 163 kfree(priv->ah); 164 priv->ah = NULL; 165 } 166 167 static void ath9k_deinit_device(struct ath9k_htc_priv *priv) 168 { 169 struct ieee80211_hw *hw = priv->hw; 170 171 wiphy_rfkill_stop_polling(hw->wiphy); 172 ath9k_deinit_leds(priv); 173 ieee80211_unregister_hw(hw); 174 ath9k_rx_cleanup(priv); 175 ath9k_tx_cleanup(priv); 176 ath9k_deinit_priv(priv); 177 } 178 179 static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv, 180 u16 service_id, 181 void (*tx) (void *, 182 struct sk_buff *, 183 enum htc_endpoint_id, 184 bool txok), 185 enum htc_endpoint_id *ep_id) 186 { 187 struct htc_service_connreq req; 188 189 memset(&req, 0, sizeof(struct htc_service_connreq)); 190 191 req.service_id = service_id; 192 req.ep_callbacks.priv = priv; 193 req.ep_callbacks.rx = ath9k_htc_rxep; 194 req.ep_callbacks.tx = tx; 195 196 return htc_connect_service(priv->htc, &req, ep_id); 197 } 198 199 static int ath9k_init_htc_services(struct ath9k_htc_priv *priv, u16 devid, 200 u32 drv_info) 201 { 202 int ret; 203 204 /* WMI CMD*/ 205 ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep); 206 if (ret) 207 goto err; 208 209 /* Beacon */ 210 ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep, 211 &priv->beacon_ep); 212 if (ret) 213 goto err; 214 215 /* CAB */ 216 ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep, 217 &priv->cab_ep); 218 if (ret) 219 goto err; 220 221 222 /* UAPSD */ 223 ret = ath9k_htc_connect_svc(priv, WMI_UAPSD_SVC, ath9k_htc_txep, 224 &priv->uapsd_ep); 225 if (ret) 226 goto err; 227 228 /* MGMT */ 229 ret = ath9k_htc_connect_svc(priv, WMI_MGMT_SVC, ath9k_htc_txep, 230 &priv->mgmt_ep); 231 if (ret) 232 goto err; 233 234 /* DATA BE */ 235 ret = ath9k_htc_connect_svc(priv, WMI_DATA_BE_SVC, ath9k_htc_txep, 236 &priv->data_be_ep); 237 if (ret) 238 goto err; 239 240 /* DATA BK */ 241 ret = ath9k_htc_connect_svc(priv, WMI_DATA_BK_SVC, ath9k_htc_txep, 242 &priv->data_bk_ep); 243 if (ret) 244 goto err; 245 246 /* DATA VI */ 247 ret = ath9k_htc_connect_svc(priv, WMI_DATA_VI_SVC, ath9k_htc_txep, 248 &priv->data_vi_ep); 249 if (ret) 250 goto err; 251 252 /* DATA VO */ 253 ret = ath9k_htc_connect_svc(priv, WMI_DATA_VO_SVC, ath9k_htc_txep, 254 &priv->data_vo_ep); 255 if (ret) 256 goto err; 257 258 /* 259 * Setup required credits before initializing HTC. 260 * This is a bit hacky, but, since queuing is done in 261 * the HIF layer, shouldn't matter much. 262 */ 263 264 if (IS_AR7010_DEVICE(drv_info)) 265 priv->htc->credits = 45; 266 else 267 priv->htc->credits = 33; 268 269 ret = htc_init(priv->htc); 270 if (ret) 271 goto err; 272 273 dev_info(priv->dev, "ath9k_htc: HTC initialized with %d credits\n", 274 priv->htc->credits); 275 276 return 0; 277 278 err: 279 dev_err(priv->dev, "ath9k_htc: Unable to initialize HTC services\n"); 280 return ret; 281 } 282 283 static void ath9k_reg_notifier(struct wiphy *wiphy, 284 struct regulatory_request *request) 285 { 286 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 287 struct ath9k_htc_priv *priv = hw->priv; 288 289 ath_reg_notifier_apply(wiphy, request, 290 ath9k_hw_regulatory(priv->ah)); 291 } 292 293 static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset) 294 { 295 struct ath_hw *ah = (struct ath_hw *) hw_priv; 296 struct ath_common *common = ath9k_hw_common(ah); 297 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; 298 __be32 val, reg = cpu_to_be32(reg_offset); 299 int r; 300 301 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID, 302 (u8 *) ®, sizeof(reg), 303 (u8 *) &val, sizeof(val), 304 100); 305 if (unlikely(r)) { 306 ath_dbg(common, WMI, "REGISTER READ FAILED: (0x%04x, %d)\n", 307 reg_offset, r); 308 return -EIO; 309 } 310 311 return be32_to_cpu(val); 312 } 313 314 static void ath9k_multi_regread(void *hw_priv, u32 *addr, 315 u32 *val, u16 count) 316 { 317 struct ath_hw *ah = (struct ath_hw *) hw_priv; 318 struct ath_common *common = ath9k_hw_common(ah); 319 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; 320 __be32 tmpaddr[8]; 321 __be32 tmpval[8]; 322 int i, ret; 323 324 for (i = 0; i < count; i++) { 325 tmpaddr[i] = cpu_to_be32(addr[i]); 326 } 327 328 ret = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID, 329 (u8 *)tmpaddr , sizeof(u32) * count, 330 (u8 *)tmpval, sizeof(u32) * count, 331 100); 332 if (unlikely(ret)) { 333 ath_dbg(common, WMI, 334 "Multiple REGISTER READ FAILED (count: %d)\n", count); 335 } 336 337 for (i = 0; i < count; i++) { 338 val[i] = be32_to_cpu(tmpval[i]); 339 } 340 } 341 342 static void ath9k_regwrite_single(void *hw_priv, u32 val, u32 reg_offset) 343 { 344 struct ath_hw *ah = (struct ath_hw *) hw_priv; 345 struct ath_common *common = ath9k_hw_common(ah); 346 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; 347 const __be32 buf[2] = { 348 cpu_to_be32(reg_offset), 349 cpu_to_be32(val), 350 }; 351 int r; 352 353 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID, 354 (u8 *) &buf, sizeof(buf), 355 (u8 *) &val, sizeof(val), 356 100); 357 if (unlikely(r)) { 358 ath_dbg(common, WMI, "REGISTER WRITE FAILED:(0x%04x, %d)\n", 359 reg_offset, r); 360 } 361 } 362 363 static void ath9k_regwrite_buffer(void *hw_priv, u32 val, u32 reg_offset) 364 { 365 struct ath_hw *ah = (struct ath_hw *) hw_priv; 366 struct ath_common *common = ath9k_hw_common(ah); 367 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; 368 u32 rsp_status; 369 int r; 370 371 mutex_lock(&priv->wmi->multi_write_mutex); 372 373 /* Store the register/value */ 374 priv->wmi->multi_write[priv->wmi->multi_write_idx].reg = 375 cpu_to_be32(reg_offset); 376 priv->wmi->multi_write[priv->wmi->multi_write_idx].val = 377 cpu_to_be32(val); 378 379 priv->wmi->multi_write_idx++; 380 381 /* If the buffer is full, send it out. */ 382 if (priv->wmi->multi_write_idx == MAX_CMD_NUMBER) { 383 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID, 384 (u8 *) &priv->wmi->multi_write, 385 sizeof(struct register_write) * priv->wmi->multi_write_idx, 386 (u8 *) &rsp_status, sizeof(rsp_status), 387 100); 388 if (unlikely(r)) { 389 ath_dbg(common, WMI, 390 "REGISTER WRITE FAILED, multi len: %d\n", 391 priv->wmi->multi_write_idx); 392 } 393 priv->wmi->multi_write_idx = 0; 394 } 395 396 mutex_unlock(&priv->wmi->multi_write_mutex); 397 } 398 399 static void ath9k_regwrite(void *hw_priv, u32 val, u32 reg_offset) 400 { 401 struct ath_hw *ah = (struct ath_hw *) hw_priv; 402 struct ath_common *common = ath9k_hw_common(ah); 403 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; 404 405 if (atomic_read(&priv->wmi->mwrite_cnt)) 406 ath9k_regwrite_buffer(hw_priv, val, reg_offset); 407 else 408 ath9k_regwrite_single(hw_priv, val, reg_offset); 409 } 410 411 static void ath9k_enable_regwrite_buffer(void *hw_priv) 412 { 413 struct ath_hw *ah = (struct ath_hw *) hw_priv; 414 struct ath_common *common = ath9k_hw_common(ah); 415 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; 416 417 atomic_inc(&priv->wmi->mwrite_cnt); 418 } 419 420 static void ath9k_regwrite_flush(void *hw_priv) 421 { 422 struct ath_hw *ah = (struct ath_hw *) hw_priv; 423 struct ath_common *common = ath9k_hw_common(ah); 424 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; 425 u32 rsp_status; 426 int r; 427 428 atomic_dec(&priv->wmi->mwrite_cnt); 429 430 mutex_lock(&priv->wmi->multi_write_mutex); 431 432 if (priv->wmi->multi_write_idx) { 433 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID, 434 (u8 *) &priv->wmi->multi_write, 435 sizeof(struct register_write) * priv->wmi->multi_write_idx, 436 (u8 *) &rsp_status, sizeof(rsp_status), 437 100); 438 if (unlikely(r)) { 439 ath_dbg(common, WMI, 440 "REGISTER WRITE FAILED, multi len: %d\n", 441 priv->wmi->multi_write_idx); 442 } 443 priv->wmi->multi_write_idx = 0; 444 } 445 446 mutex_unlock(&priv->wmi->multi_write_mutex); 447 } 448 449 static u32 ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr) 450 { 451 u32 val; 452 453 val = ath9k_regread(hw_priv, reg_offset); 454 val &= ~clr; 455 val |= set; 456 ath9k_regwrite(hw_priv, val, reg_offset); 457 return val; 458 } 459 460 static void ath_usb_read_cachesize(struct ath_common *common, int *csz) 461 { 462 *csz = L1_CACHE_BYTES >> 2; 463 } 464 465 static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data) 466 { 467 struct ath_hw *ah = (struct ath_hw *) common->ah; 468 469 (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S)); 470 471 if (!ath9k_hw_wait(ah, 472 AR_EEPROM_STATUS_DATA, 473 AR_EEPROM_STATUS_DATA_BUSY | 474 AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, 475 AH_WAIT_TIMEOUT)) 476 return false; 477 478 *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA), 479 AR_EEPROM_STATUS_DATA_VAL); 480 481 return true; 482 } 483 484 static const struct ath_bus_ops ath9k_usb_bus_ops = { 485 .ath_bus_type = ATH_USB, 486 .read_cachesize = ath_usb_read_cachesize, 487 .eeprom_read = ath_usb_eeprom_read, 488 }; 489 490 static void setup_ht_cap(struct ath9k_htc_priv *priv, 491 struct ieee80211_sta_ht_cap *ht_info) 492 { 493 struct ath_common *common = ath9k_hw_common(priv->ah); 494 u8 tx_streams, rx_streams; 495 int i; 496 497 ht_info->ht_supported = true; 498 ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | 499 IEEE80211_HT_CAP_SM_PS | 500 IEEE80211_HT_CAP_SGI_40 | 501 IEEE80211_HT_CAP_DSSSCCK40; 502 503 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20) 504 ht_info->cap |= IEEE80211_HT_CAP_SGI_20; 505 506 ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); 507 508 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; 509 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; 510 511 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); 512 513 /* ath9k_htc supports only 1 or 2 stream devices */ 514 tx_streams = ath9k_cmn_count_streams(priv->ah->txchainmask, 2); 515 rx_streams = ath9k_cmn_count_streams(priv->ah->rxchainmask, 2); 516 517 ath_dbg(common, CONFIG, "TX streams %d, RX streams: %d\n", 518 tx_streams, rx_streams); 519 520 if (tx_streams >= 2) 521 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC; 522 523 if (tx_streams != rx_streams) { 524 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 525 ht_info->mcs.tx_params |= ((tx_streams - 1) << 526 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); 527 } 528 529 for (i = 0; i < rx_streams; i++) 530 ht_info->mcs.rx_mask[i] = 0xff; 531 532 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; 533 } 534 535 static int ath9k_init_queues(struct ath9k_htc_priv *priv) 536 { 537 struct ath_common *common = ath9k_hw_common(priv->ah); 538 int i; 539 540 for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++) 541 priv->hwq_map[i] = -1; 542 543 priv->beaconq = ath9k_hw_beaconq_setup(priv->ah); 544 if (priv->beaconq == -1) { 545 ath_err(common, "Unable to setup BEACON xmit queue\n"); 546 goto err; 547 } 548 549 priv->cabq = ath9k_htc_cabq_setup(priv); 550 if (priv->cabq == -1) { 551 ath_err(common, "Unable to setup CAB xmit queue\n"); 552 goto err; 553 } 554 555 if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_BE)) { 556 ath_err(common, "Unable to setup xmit queue for BE traffic\n"); 557 goto err; 558 } 559 560 if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_BK)) { 561 ath_err(common, "Unable to setup xmit queue for BK traffic\n"); 562 goto err; 563 } 564 if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_VI)) { 565 ath_err(common, "Unable to setup xmit queue for VI traffic\n"); 566 goto err; 567 } 568 if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_VO)) { 569 ath_err(common, "Unable to setup xmit queue for VO traffic\n"); 570 goto err; 571 } 572 573 return 0; 574 575 err: 576 return -EINVAL; 577 } 578 579 static void ath9k_init_channels_rates(struct ath9k_htc_priv *priv) 580 { 581 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) { 582 priv->sbands[IEEE80211_BAND_2GHZ].channels = 583 ath9k_2ghz_channels; 584 priv->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; 585 priv->sbands[IEEE80211_BAND_2GHZ].n_channels = 586 ARRAY_SIZE(ath9k_2ghz_channels); 587 priv->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates; 588 priv->sbands[IEEE80211_BAND_2GHZ].n_bitrates = 589 ARRAY_SIZE(ath9k_legacy_rates); 590 } 591 592 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) { 593 priv->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_channels; 594 priv->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; 595 priv->sbands[IEEE80211_BAND_5GHZ].n_channels = 596 ARRAY_SIZE(ath9k_5ghz_channels); 597 priv->sbands[IEEE80211_BAND_5GHZ].bitrates = 598 ath9k_legacy_rates + 4; 599 priv->sbands[IEEE80211_BAND_5GHZ].n_bitrates = 600 ARRAY_SIZE(ath9k_legacy_rates) - 4; 601 } 602 } 603 604 static void ath9k_init_misc(struct ath9k_htc_priv *priv) 605 { 606 struct ath_common *common = ath9k_hw_common(priv->ah); 607 608 memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN); 609 610 priv->ah->opmode = NL80211_IFTYPE_STATION; 611 } 612 613 static int ath9k_init_priv(struct ath9k_htc_priv *priv, 614 u16 devid, char *product, 615 u32 drv_info) 616 { 617 struct ath_hw *ah = NULL; 618 struct ath_common *common; 619 int i, ret = 0, csz = 0; 620 621 set_bit(OP_INVALID, &priv->op_flags); 622 623 ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL); 624 if (!ah) 625 return -ENOMEM; 626 627 ah->hw_version.devid = devid; 628 ah->hw_version.usbdev = drv_info; 629 ah->ah_flags |= AH_USE_EEPROM; 630 ah->reg_ops.read = ath9k_regread; 631 ah->reg_ops.multi_read = ath9k_multi_regread; 632 ah->reg_ops.write = ath9k_regwrite; 633 ah->reg_ops.enable_write_buffer = ath9k_enable_regwrite_buffer; 634 ah->reg_ops.write_flush = ath9k_regwrite_flush; 635 ah->reg_ops.rmw = ath9k_reg_rmw; 636 priv->ah = ah; 637 638 common = ath9k_hw_common(ah); 639 common->ops = &ah->reg_ops; 640 common->bus_ops = &ath9k_usb_bus_ops; 641 common->ah = ah; 642 common->hw = priv->hw; 643 common->priv = priv; 644 common->debug_mask = ath9k_debug; 645 common->btcoex_enabled = ath9k_htc_btcoex_enable == 1; 646 647 spin_lock_init(&priv->beacon_lock); 648 spin_lock_init(&priv->tx.tx_lock); 649 mutex_init(&priv->mutex); 650 mutex_init(&priv->htc_pm_lock); 651 tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet, 652 (unsigned long)priv); 653 tasklet_init(&priv->tx_failed_tasklet, ath9k_tx_failed_tasklet, 654 (unsigned long)priv); 655 INIT_DELAYED_WORK(&priv->ani_work, ath9k_htc_ani_work); 656 INIT_WORK(&priv->ps_work, ath9k_ps_work); 657 INIT_WORK(&priv->fatal_work, ath9k_fatal_work); 658 setup_timer(&priv->tx.cleanup_timer, ath9k_htc_tx_cleanup_timer, 659 (unsigned long)priv); 660 661 /* 662 * Cache line size is used to size and align various 663 * structures used to communicate with the hardware. 664 */ 665 ath_read_cachesize(common, &csz); 666 common->cachelsz = csz << 2; /* convert to bytes */ 667 668 ret = ath9k_hw_init(ah); 669 if (ret) { 670 ath_err(common, 671 "Unable to initialize hardware; initialization status: %d\n", 672 ret); 673 goto err_hw; 674 } 675 676 ret = ath9k_init_queues(priv); 677 if (ret) 678 goto err_queues; 679 680 for (i = 0; i < ATH9K_HTC_MAX_BCN_VIF; i++) 681 priv->cur_beacon_conf.bslot[i] = NULL; 682 683 ath9k_cmn_init_crypto(ah); 684 ath9k_init_channels_rates(priv); 685 ath9k_init_misc(priv); 686 ath9k_htc_init_btcoex(priv, product); 687 688 return 0; 689 690 err_queues: 691 ath9k_hw_deinit(ah); 692 err_hw: 693 694 kfree(ah); 695 priv->ah = NULL; 696 697 return ret; 698 } 699 700 static const struct ieee80211_iface_limit if_limits[] = { 701 { .max = 2, .types = BIT(NL80211_IFTYPE_STATION) | 702 BIT(NL80211_IFTYPE_P2P_CLIENT) }, 703 { .max = 2, .types = BIT(NL80211_IFTYPE_AP) | 704 #ifdef CONFIG_MAC80211_MESH 705 BIT(NL80211_IFTYPE_MESH_POINT) | 706 #endif 707 BIT(NL80211_IFTYPE_P2P_GO) }, 708 }; 709 710 static const struct ieee80211_iface_combination if_comb = { 711 .limits = if_limits, 712 .n_limits = ARRAY_SIZE(if_limits), 713 .max_interfaces = 2, 714 .num_different_channels = 1, 715 }; 716 717 static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv, 718 struct ieee80211_hw *hw) 719 { 720 struct ath_common *common = ath9k_hw_common(priv->ah); 721 struct base_eep_header *pBase; 722 723 hw->flags = IEEE80211_HW_SIGNAL_DBM | 724 IEEE80211_HW_AMPDU_AGGREGATION | 725 IEEE80211_HW_SPECTRUM_MGMT | 726 IEEE80211_HW_HAS_RATE_CONTROL | 727 IEEE80211_HW_RX_INCLUDES_FCS | 728 IEEE80211_HW_SUPPORTS_PS | 729 IEEE80211_HW_PS_NULLFUNC_STACK | 730 IEEE80211_HW_REPORTS_TX_ACK_STATUS | 731 IEEE80211_HW_MFP_CAPABLE | 732 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; 733 734 hw->wiphy->interface_modes = 735 BIT(NL80211_IFTYPE_STATION) | 736 BIT(NL80211_IFTYPE_ADHOC) | 737 BIT(NL80211_IFTYPE_AP) | 738 BIT(NL80211_IFTYPE_P2P_GO) | 739 BIT(NL80211_IFTYPE_P2P_CLIENT) | 740 BIT(NL80211_IFTYPE_MESH_POINT); 741 742 hw->wiphy->iface_combinations = &if_comb; 743 hw->wiphy->n_iface_combinations = 1; 744 745 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 746 747 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN | 748 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 749 750 hw->queues = 4; 751 hw->max_listen_interval = 1; 752 753 hw->vif_data_size = sizeof(struct ath9k_htc_vif); 754 hw->sta_data_size = sizeof(struct ath9k_htc_sta); 755 756 /* tx_frame_hdr is larger than tx_mgmt_hdr anyway */ 757 hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) + 758 sizeof(struct htc_frame_hdr) + 4; 759 760 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) 761 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = 762 &priv->sbands[IEEE80211_BAND_2GHZ]; 763 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) 764 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = 765 &priv->sbands[IEEE80211_BAND_5GHZ]; 766 767 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_HT) { 768 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) 769 setup_ht_cap(priv, 770 &priv->sbands[IEEE80211_BAND_2GHZ].ht_cap); 771 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) 772 setup_ht_cap(priv, 773 &priv->sbands[IEEE80211_BAND_5GHZ].ht_cap); 774 } 775 776 pBase = ath9k_htc_get_eeprom_base(priv); 777 if (pBase) { 778 hw->wiphy->available_antennas_rx = pBase->rxMask; 779 hw->wiphy->available_antennas_tx = pBase->txMask; 780 } 781 782 SET_IEEE80211_PERM_ADDR(hw, common->macaddr); 783 } 784 785 static int ath9k_init_firmware_version(struct ath9k_htc_priv *priv) 786 { 787 struct ieee80211_hw *hw = priv->hw; 788 struct wmi_fw_version cmd_rsp; 789 int ret; 790 791 memset(&cmd_rsp, 0, sizeof(cmd_rsp)); 792 793 WMI_CMD(WMI_GET_FW_VERSION); 794 if (ret) 795 return -EINVAL; 796 797 priv->fw_version_major = be16_to_cpu(cmd_rsp.major); 798 priv->fw_version_minor = be16_to_cpu(cmd_rsp.minor); 799 800 snprintf(hw->wiphy->fw_version, sizeof(hw->wiphy->fw_version), "%d.%d", 801 priv->fw_version_major, 802 priv->fw_version_minor); 803 804 dev_info(priv->dev, "ath9k_htc: FW Version: %d.%d\n", 805 priv->fw_version_major, 806 priv->fw_version_minor); 807 808 /* 809 * Check if the available FW matches the driver's 810 * required version. 811 */ 812 if (priv->fw_version_major != MAJOR_VERSION_REQ || 813 priv->fw_version_minor < MINOR_VERSION_REQ) { 814 dev_err(priv->dev, "ath9k_htc: Please upgrade to FW version %d.%d\n", 815 MAJOR_VERSION_REQ, MINOR_VERSION_REQ); 816 return -EINVAL; 817 } 818 819 return 0; 820 } 821 822 static int ath9k_init_device(struct ath9k_htc_priv *priv, 823 u16 devid, char *product, u32 drv_info) 824 { 825 struct ieee80211_hw *hw = priv->hw; 826 struct ath_common *common; 827 struct ath_hw *ah; 828 int error = 0; 829 struct ath_regulatory *reg; 830 char hw_name[64]; 831 832 /* Bring up device */ 833 error = ath9k_init_priv(priv, devid, product, drv_info); 834 if (error != 0) 835 goto err_init; 836 837 ah = priv->ah; 838 common = ath9k_hw_common(ah); 839 ath9k_set_hw_capab(priv, hw); 840 841 error = ath9k_init_firmware_version(priv); 842 if (error != 0) 843 goto err_fw; 844 845 /* Initialize regulatory */ 846 error = ath_regd_init(&common->regulatory, priv->hw->wiphy, 847 ath9k_reg_notifier); 848 if (error) 849 goto err_regd; 850 851 reg = &common->regulatory; 852 853 /* Setup TX */ 854 error = ath9k_tx_init(priv); 855 if (error != 0) 856 goto err_tx; 857 858 /* Setup RX */ 859 error = ath9k_rx_init(priv); 860 if (error != 0) 861 goto err_rx; 862 863 ath9k_hw_disable(priv->ah); 864 #ifdef CONFIG_MAC80211_LEDS 865 /* must be initialized before ieee80211_register_hw */ 866 priv->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(priv->hw, 867 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_htc_tpt_blink, 868 ARRAY_SIZE(ath9k_htc_tpt_blink)); 869 #endif 870 871 /* Register with mac80211 */ 872 error = ieee80211_register_hw(hw); 873 if (error) 874 goto err_register; 875 876 /* Handle world regulatory */ 877 if (!ath_is_world_regd(reg)) { 878 error = regulatory_hint(hw->wiphy, reg->alpha2); 879 if (error) 880 goto err_world; 881 } 882 883 error = ath9k_htc_init_debug(priv->ah); 884 if (error) { 885 ath_err(common, "Unable to create debugfs files\n"); 886 goto err_world; 887 } 888 889 ath_dbg(common, CONFIG, 890 "WMI:%d, BCN:%d, CAB:%d, UAPSD:%d, MGMT:%d, BE:%d, BK:%d, VI:%d, VO:%d\n", 891 priv->wmi_cmd_ep, 892 priv->beacon_ep, 893 priv->cab_ep, 894 priv->uapsd_ep, 895 priv->mgmt_ep, 896 priv->data_be_ep, 897 priv->data_bk_ep, 898 priv->data_vi_ep, 899 priv->data_vo_ep); 900 901 ath9k_hw_name(priv->ah, hw_name, sizeof(hw_name)); 902 wiphy_info(hw->wiphy, "%s\n", hw_name); 903 904 ath9k_init_leds(priv); 905 ath9k_start_rfkill_poll(priv); 906 907 return 0; 908 909 err_world: 910 ieee80211_unregister_hw(hw); 911 err_register: 912 ath9k_rx_cleanup(priv); 913 err_rx: 914 ath9k_tx_cleanup(priv); 915 err_tx: 916 /* Nothing */ 917 err_regd: 918 /* Nothing */ 919 err_fw: 920 ath9k_deinit_priv(priv); 921 err_init: 922 return error; 923 } 924 925 int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev, 926 u16 devid, char *product, u32 drv_info) 927 { 928 struct ieee80211_hw *hw; 929 struct ath9k_htc_priv *priv; 930 int ret; 931 932 hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops); 933 if (!hw) 934 return -ENOMEM; 935 936 priv = hw->priv; 937 priv->hw = hw; 938 priv->htc = htc_handle; 939 priv->dev = dev; 940 htc_handle->drv_priv = priv; 941 SET_IEEE80211_DEV(hw, priv->dev); 942 943 ret = ath9k_htc_wait_for_target(priv); 944 if (ret) 945 goto err_free; 946 947 priv->wmi = ath9k_init_wmi(priv); 948 if (!priv->wmi) { 949 ret = -EINVAL; 950 goto err_free; 951 } 952 953 ret = ath9k_init_htc_services(priv, devid, drv_info); 954 if (ret) 955 goto err_init; 956 957 ret = ath9k_init_device(priv, devid, product, drv_info); 958 if (ret) 959 goto err_init; 960 961 return 0; 962 963 err_init: 964 ath9k_deinit_wmi(priv); 965 err_free: 966 ieee80211_free_hw(hw); 967 return ret; 968 } 969 970 void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug) 971 { 972 if (htc_handle->drv_priv) { 973 974 /* Check if the device has been yanked out. */ 975 if (hotunplug) 976 htc_handle->drv_priv->ah->ah_flags |= AH_UNPLUGGED; 977 978 ath9k_deinit_device(htc_handle->drv_priv); 979 ath9k_deinit_wmi(htc_handle->drv_priv); 980 ieee80211_free_hw(htc_handle->drv_priv->hw); 981 } 982 } 983 984 #ifdef CONFIG_PM 985 986 void ath9k_htc_suspend(struct htc_target *htc_handle) 987 { 988 ath9k_htc_setpower(htc_handle->drv_priv, ATH9K_PM_FULL_SLEEP); 989 } 990 991 int ath9k_htc_resume(struct htc_target *htc_handle) 992 { 993 struct ath9k_htc_priv *priv = htc_handle->drv_priv; 994 int ret; 995 996 ret = ath9k_htc_wait_for_target(priv); 997 if (ret) 998 return ret; 999 1000 ret = ath9k_init_htc_services(priv, priv->ah->hw_version.devid, 1001 priv->ah->hw_version.usbdev); 1002 return ret; 1003 } 1004 #endif 1005 1006 static int __init ath9k_htc_init(void) 1007 { 1008 if (ath9k_hif_usb_init() < 0) { 1009 pr_err("No USB devices found, driver not installed\n"); 1010 return -ENODEV; 1011 } 1012 1013 return 0; 1014 } 1015 module_init(ath9k_htc_init); 1016 1017 static void __exit ath9k_htc_exit(void) 1018 { 1019 ath9k_hif_usb_exit(); 1020 pr_info("Driver unloaded\n"); 1021 } 1022 module_exit(ath9k_htc_exit); 1023