1 /* 2 * Copyright (c) 2008-2011 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 <linux/dma-mapping.h> 20 #include <linux/slab.h> 21 #include <linux/module.h> 22 #include <linux/of.h> 23 #include <linux/of_net.h> 24 #include <linux/nvmem-consumer.h> 25 #include <linux/relay.h> 26 #include <linux/dmi.h> 27 #include <net/ieee80211_radiotap.h> 28 29 #include "ath9k.h" 30 31 struct ath9k_eeprom_ctx { 32 struct completion complete; 33 struct ath_hw *ah; 34 }; 35 36 static char *dev_info = "ath9k"; 37 38 MODULE_AUTHOR("Atheros Communications"); 39 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); 40 MODULE_LICENSE("Dual BSD/GPL"); 41 42 static unsigned int ath9k_debug = ATH_DBG_DEFAULT; 43 module_param_named(debug, ath9k_debug, uint, 0); 44 MODULE_PARM_DESC(debug, "Debugging mask"); 45 46 int ath9k_modparam_nohwcrypt; 47 module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444); 48 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); 49 50 int ath9k_led_blink; 51 module_param_named(blink, ath9k_led_blink, int, 0444); 52 MODULE_PARM_DESC(blink, "Enable LED blink on activity"); 53 54 static int ath9k_led_active_high = -1; 55 module_param_named(led_active_high, ath9k_led_active_high, int, 0444); 56 MODULE_PARM_DESC(led_active_high, "Invert LED polarity"); 57 58 static int ath9k_btcoex_enable; 59 module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444); 60 MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence"); 61 62 static int ath9k_bt_ant_diversity; 63 module_param_named(bt_ant_diversity, ath9k_bt_ant_diversity, int, 0444); 64 MODULE_PARM_DESC(bt_ant_diversity, "Enable WLAN/BT RX antenna diversity"); 65 66 static int ath9k_ps_enable; 67 module_param_named(ps_enable, ath9k_ps_enable, int, 0444); 68 MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave"); 69 70 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 71 72 int ath9k_use_chanctx; 73 module_param_named(use_chanctx, ath9k_use_chanctx, int, 0444); 74 MODULE_PARM_DESC(use_chanctx, "Enable channel context for concurrency"); 75 76 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 77 78 int ath9k_use_msi; 79 module_param_named(use_msi, ath9k_use_msi, int, 0444); 80 MODULE_PARM_DESC(use_msi, "Use MSI instead of INTx if possible"); 81 82 bool is_ath9k_unloaded; 83 84 #ifdef CONFIG_MAC80211_LEDS 85 static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = { 86 { .throughput = 0 * 1024, .blink_time = 334 }, 87 { .throughput = 1 * 1024, .blink_time = 260 }, 88 { .throughput = 5 * 1024, .blink_time = 220 }, 89 { .throughput = 10 * 1024, .blink_time = 190 }, 90 { .throughput = 20 * 1024, .blink_time = 170 }, 91 { .throughput = 50 * 1024, .blink_time = 150 }, 92 { .throughput = 70 * 1024, .blink_time = 130 }, 93 { .throughput = 100 * 1024, .blink_time = 110 }, 94 { .throughput = 200 * 1024, .blink_time = 80 }, 95 { .throughput = 300 * 1024, .blink_time = 50 }, 96 }; 97 #endif 98 99 static int __init set_use_msi(const struct dmi_system_id *dmi) 100 { 101 ath9k_use_msi = 1; 102 return 1; 103 } 104 105 static const struct dmi_system_id ath9k_quirks[] __initconst = { 106 { 107 .callback = set_use_msi, 108 .ident = "Dell Inspiron 24-3460", 109 .matches = { 110 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 111 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 24-3460"), 112 }, 113 }, 114 { 115 .callback = set_use_msi, 116 .ident = "Dell Vostro 3262", 117 .matches = { 118 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 119 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3262"), 120 }, 121 }, 122 { 123 .callback = set_use_msi, 124 .ident = "Dell Inspiron 3472", 125 .matches = { 126 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 127 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3472"), 128 }, 129 }, 130 { 131 .callback = set_use_msi, 132 .ident = "Dell Vostro 15-3572", 133 .matches = { 134 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 135 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15-3572"), 136 }, 137 }, 138 { 139 .callback = set_use_msi, 140 .ident = "Dell Inspiron 14-3473", 141 .matches = { 142 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 143 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 14-3473"), 144 }, 145 }, 146 {} 147 }; 148 149 static void ath9k_deinit_softc(struct ath_softc *sc); 150 151 static void ath9k_op_ps_wakeup(struct ath_common *common) 152 { 153 ath9k_ps_wakeup(common->priv); 154 } 155 156 static void ath9k_op_ps_restore(struct ath_common *common) 157 { 158 ath9k_ps_restore(common->priv); 159 } 160 161 static const struct ath_ps_ops ath9k_ps_ops = { 162 .wakeup = ath9k_op_ps_wakeup, 163 .restore = ath9k_op_ps_restore, 164 }; 165 166 /* 167 * Read and write, they both share the same lock. We do this to serialize 168 * reads and writes on Atheros 802.11n PCI devices only. This is required 169 * as the FIFO on these devices can only accept sanely 2 requests. 170 */ 171 172 static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) 173 { 174 struct ath_hw *ah = hw_priv; 175 struct ath_common *common = ath9k_hw_common(ah); 176 struct ath_softc *sc = common->priv; 177 178 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { 179 unsigned long flags; 180 spin_lock_irqsave(&sc->sc_serial_rw, flags); 181 iowrite32(val, sc->mem + reg_offset); 182 spin_unlock_irqrestore(&sc->sc_serial_rw, flags); 183 } else 184 iowrite32(val, sc->mem + reg_offset); 185 } 186 187 static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset) 188 { 189 struct ath_hw *ah = hw_priv; 190 struct ath_common *common = ath9k_hw_common(ah); 191 struct ath_softc *sc = common->priv; 192 u32 val; 193 194 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { 195 unsigned long flags; 196 spin_lock_irqsave(&sc->sc_serial_rw, flags); 197 val = ioread32(sc->mem + reg_offset); 198 spin_unlock_irqrestore(&sc->sc_serial_rw, flags); 199 } else 200 val = ioread32(sc->mem + reg_offset); 201 return val; 202 } 203 204 static void ath9k_multi_ioread32(void *hw_priv, u32 *addr, 205 u32 *val, u16 count) 206 { 207 int i; 208 209 for (i = 0; i < count; i++) 210 val[i] = ath9k_ioread32(hw_priv, addr[i]); 211 } 212 213 214 static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset, 215 u32 set, u32 clr) 216 { 217 u32 val; 218 219 val = ioread32(sc->mem + reg_offset); 220 val &= ~clr; 221 val |= set; 222 iowrite32(val, sc->mem + reg_offset); 223 224 return val; 225 } 226 227 static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr) 228 { 229 struct ath_hw *ah = hw_priv; 230 struct ath_common *common = ath9k_hw_common(ah); 231 struct ath_softc *sc = common->priv; 232 unsigned long flags; 233 u32 val; 234 235 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { 236 spin_lock_irqsave(&sc->sc_serial_rw, flags); 237 val = __ath9k_reg_rmw(sc, reg_offset, set, clr); 238 spin_unlock_irqrestore(&sc->sc_serial_rw, flags); 239 } else 240 val = __ath9k_reg_rmw(sc, reg_offset, set, clr); 241 242 return val; 243 } 244 245 /**************************/ 246 /* Initialization */ 247 /**************************/ 248 249 static void ath9k_reg_notifier(struct wiphy *wiphy, 250 struct regulatory_request *request) 251 { 252 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 253 struct ath_softc *sc = hw->priv; 254 struct ath_hw *ah = sc->sc_ah; 255 struct ath_regulatory *reg = ath9k_hw_regulatory(ah); 256 257 ath_reg_notifier_apply(wiphy, request, reg); 258 259 /* synchronize DFS detector if regulatory domain changed */ 260 if (sc->dfs_detector != NULL) 261 sc->dfs_detector->set_dfs_domain(sc->dfs_detector, 262 request->dfs_region); 263 264 /* Set tx power */ 265 if (!ah->curchan) 266 return; 267 268 sc->cur_chan->txpower = 2 * ah->curchan->chan->max_power; 269 ath9k_ps_wakeup(sc); 270 ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false); 271 ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower, 272 sc->cur_chan->txpower, 273 &sc->cur_chan->cur_txpower); 274 ath9k_ps_restore(sc); 275 } 276 277 /* 278 * This function will allocate both the DMA descriptor structure, and the 279 * buffers it contains. These are used to contain the descriptors used 280 * by the system. 281 */ 282 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, 283 struct list_head *head, const char *name, 284 int nbuf, int ndesc, bool is_tx) 285 { 286 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 287 u8 *ds; 288 int i, bsize, desc_len; 289 290 ath_dbg(common, CONFIG, "%s DMA: %u buffers %u desc/buf\n", 291 name, nbuf, ndesc); 292 293 INIT_LIST_HEAD(head); 294 295 if (is_tx) 296 desc_len = sc->sc_ah->caps.tx_desc_len; 297 else 298 desc_len = sizeof(struct ath_desc); 299 300 /* ath_desc must be a multiple of DWORDs */ 301 if ((desc_len % 4) != 0) { 302 ath_err(common, "ath_desc not DWORD aligned\n"); 303 BUG_ON((desc_len % 4) != 0); 304 return -ENOMEM; 305 } 306 307 dd->dd_desc_len = desc_len * nbuf * ndesc; 308 309 /* 310 * Need additional DMA memory because we can't use 311 * descriptors that cross the 4K page boundary. Assume 312 * one skipped descriptor per 4K page. 313 */ 314 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { 315 u32 ndesc_skipped = 316 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); 317 u32 dma_len; 318 319 while (ndesc_skipped) { 320 dma_len = ndesc_skipped * desc_len; 321 dd->dd_desc_len += dma_len; 322 323 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); 324 } 325 } 326 327 /* allocate descriptors */ 328 dd->dd_desc = dmam_alloc_coherent(sc->dev, dd->dd_desc_len, 329 &dd->dd_desc_paddr, GFP_KERNEL); 330 if (!dd->dd_desc) 331 return -ENOMEM; 332 333 ds = dd->dd_desc; 334 ath_dbg(common, CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", 335 name, ds, (u32) dd->dd_desc_len, 336 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); 337 338 /* allocate buffers */ 339 if (is_tx) { 340 struct ath_buf *bf; 341 342 bsize = sizeof(struct ath_buf) * nbuf; 343 bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL); 344 if (!bf) 345 return -ENOMEM; 346 347 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { 348 bf->bf_desc = ds; 349 bf->bf_daddr = DS2PHYS(dd, ds); 350 351 if (!(sc->sc_ah->caps.hw_caps & 352 ATH9K_HW_CAP_4KB_SPLITTRANS)) { 353 /* 354 * Skip descriptor addresses which can cause 4KB 355 * boundary crossing (addr + length) with a 32 dword 356 * descriptor fetch. 357 */ 358 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { 359 BUG_ON((caddr_t) bf->bf_desc >= 360 ((caddr_t) dd->dd_desc + 361 dd->dd_desc_len)); 362 363 ds += (desc_len * ndesc); 364 bf->bf_desc = ds; 365 bf->bf_daddr = DS2PHYS(dd, ds); 366 } 367 } 368 list_add_tail(&bf->list, head); 369 } 370 } else { 371 struct ath_rxbuf *bf; 372 373 bsize = sizeof(struct ath_rxbuf) * nbuf; 374 bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL); 375 if (!bf) 376 return -ENOMEM; 377 378 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { 379 bf->bf_desc = ds; 380 bf->bf_daddr = DS2PHYS(dd, ds); 381 382 if (!(sc->sc_ah->caps.hw_caps & 383 ATH9K_HW_CAP_4KB_SPLITTRANS)) { 384 /* 385 * Skip descriptor addresses which can cause 4KB 386 * boundary crossing (addr + length) with a 32 dword 387 * descriptor fetch. 388 */ 389 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { 390 BUG_ON((caddr_t) bf->bf_desc >= 391 ((caddr_t) dd->dd_desc + 392 dd->dd_desc_len)); 393 394 ds += (desc_len * ndesc); 395 bf->bf_desc = ds; 396 bf->bf_daddr = DS2PHYS(dd, ds); 397 } 398 } 399 list_add_tail(&bf->list, head); 400 } 401 } 402 return 0; 403 } 404 405 static int ath9k_init_queues(struct ath_softc *sc) 406 { 407 int i = 0; 408 409 sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah); 410 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); 411 ath_cabq_update(sc); 412 413 sc->tx.uapsdq = ath_txq_setup(sc, ATH9K_TX_QUEUE_UAPSD, 0); 414 415 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 416 sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i); 417 sc->tx.txq_map[i]->mac80211_qnum = i; 418 } 419 return 0; 420 } 421 422 static void ath9k_init_misc(struct ath_softc *sc) 423 { 424 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 425 int i = 0; 426 427 timer_setup(&common->ani.timer, ath_ani_calibrate, 0); 428 429 common->last_rssi = ATH_RSSI_DUMMY_MARKER; 430 eth_broadcast_addr(common->bssidmask); 431 sc->beacon.slottime = 9; 432 433 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) 434 sc->beacon.bslot[i] = NULL; 435 436 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) 437 sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT; 438 439 sc->spec_priv.ah = sc->sc_ah; 440 sc->spec_priv.spec_config.enabled = 0; 441 sc->spec_priv.spec_config.short_repeat = true; 442 sc->spec_priv.spec_config.count = 8; 443 sc->spec_priv.spec_config.endless = false; 444 sc->spec_priv.spec_config.period = 0xFF; 445 sc->spec_priv.spec_config.fft_period = 0xF; 446 } 447 448 static void ath9k_init_pcoem_platform(struct ath_softc *sc) 449 { 450 struct ath_hw *ah = sc->sc_ah; 451 struct ath9k_hw_capabilities *pCap = &ah->caps; 452 struct ath_common *common = ath9k_hw_common(ah); 453 454 if (!IS_ENABLED(CONFIG_ATH9K_PCOEM)) 455 return; 456 457 if (common->bus_ops->ath_bus_type != ATH_PCI) 458 return; 459 460 if (sc->driver_data & (ATH9K_PCI_CUS198 | 461 ATH9K_PCI_CUS230)) { 462 ah->config.xlna_gpio = 9; 463 ah->config.xatten_margin_cfg = true; 464 ah->config.alt_mingainidx = true; 465 ah->config.ant_ctrl_comm2g_switch_enable = 0x000BBB88; 466 sc->ant_comb.low_rssi_thresh = 20; 467 sc->ant_comb.fast_div_bias = 3; 468 469 ath_info(common, "Set parameters for %s\n", 470 (sc->driver_data & ATH9K_PCI_CUS198) ? 471 "CUS198" : "CUS230"); 472 } 473 474 if (sc->driver_data & ATH9K_PCI_CUS217) 475 ath_info(common, "CUS217 card detected\n"); 476 477 if (sc->driver_data & ATH9K_PCI_CUS252) 478 ath_info(common, "CUS252 card detected\n"); 479 480 if (sc->driver_data & ATH9K_PCI_AR9565_1ANT) 481 ath_info(common, "WB335 1-ANT card detected\n"); 482 483 if (sc->driver_data & ATH9K_PCI_AR9565_2ANT) 484 ath_info(common, "WB335 2-ANT card detected\n"); 485 486 if (sc->driver_data & ATH9K_PCI_KILLER) 487 ath_info(common, "Killer Wireless card detected\n"); 488 489 /* 490 * Some WB335 cards do not support antenna diversity. Since 491 * we use a hardcoded value for AR9565 instead of using the 492 * EEPROM/OTP data, remove the combining feature from 493 * the HW capabilities bitmap. 494 */ 495 if (sc->driver_data & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) { 496 if (!(sc->driver_data & ATH9K_PCI_BT_ANT_DIV)) 497 pCap->hw_caps &= ~ATH9K_HW_CAP_ANT_DIV_COMB; 498 } 499 500 if (sc->driver_data & ATH9K_PCI_BT_ANT_DIV) { 501 pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV; 502 ath_info(common, "Set BT/WLAN RX diversity capability\n"); 503 } 504 505 if (sc->driver_data & ATH9K_PCI_D3_L1_WAR) { 506 ah->config.pcie_waen = 0x0040473b; 507 ath_info(common, "Enable WAR for ASPM D3/L1\n"); 508 } 509 510 /* 511 * The default value of pll_pwrsave is 1. 512 * For certain AR9485 cards, it is set to 0. 513 * For AR9462, AR9565 it's set to 7. 514 */ 515 ah->config.pll_pwrsave = 1; 516 517 if (sc->driver_data & ATH9K_PCI_NO_PLL_PWRSAVE) { 518 ah->config.pll_pwrsave = 0; 519 ath_info(common, "Disable PLL PowerSave\n"); 520 } 521 522 if (sc->driver_data & ATH9K_PCI_LED_ACT_HI) 523 ah->config.led_active_high = true; 524 } 525 526 static void ath9k_eeprom_request_cb(const struct firmware *eeprom_blob, 527 void *ctx) 528 { 529 struct ath9k_eeprom_ctx *ec = ctx; 530 531 if (eeprom_blob) 532 ec->ah->eeprom_blob = eeprom_blob; 533 534 complete(&ec->complete); 535 } 536 537 static int ath9k_eeprom_request(struct ath_softc *sc, const char *name) 538 { 539 struct ath9k_eeprom_ctx ec; 540 struct ath_hw *ah = sc->sc_ah; 541 int err; 542 543 /* try to load the EEPROM content asynchronously */ 544 init_completion(&ec.complete); 545 ec.ah = sc->sc_ah; 546 547 err = request_firmware_nowait(THIS_MODULE, 1, name, sc->dev, GFP_KERNEL, 548 &ec, ath9k_eeprom_request_cb); 549 if (err < 0) { 550 ath_err(ath9k_hw_common(ah), 551 "EEPROM request failed\n"); 552 return err; 553 } 554 555 wait_for_completion(&ec.complete); 556 557 if (!ah->eeprom_blob) { 558 ath_err(ath9k_hw_common(ah), 559 "Unable to load EEPROM file %s\n", name); 560 return -EINVAL; 561 } 562 563 return 0; 564 } 565 566 static void ath9k_eeprom_release(struct ath_softc *sc) 567 { 568 release_firmware(sc->sc_ah->eeprom_blob); 569 } 570 571 static int ath9k_nvmem_request_eeprom(struct ath_softc *sc) 572 { 573 struct ath_hw *ah = sc->sc_ah; 574 struct nvmem_cell *cell; 575 void *buf; 576 size_t len; 577 int err; 578 579 cell = devm_nvmem_cell_get(sc->dev, "calibration"); 580 if (IS_ERR(cell)) { 581 err = PTR_ERR(cell); 582 583 /* nvmem cell might not be defined, or the nvmem 584 * subsystem isn't included. In this case, follow 585 * the established "just return 0;" convention 586 * to say: 587 * "All good. Nothing to see here. Please go on." 588 */ 589 if (err == -ENOENT || err == -EOPNOTSUPP) 590 return 0; 591 592 return err; 593 } 594 595 buf = nvmem_cell_read(cell, &len); 596 if (IS_ERR(buf)) 597 return PTR_ERR(buf); 598 599 /* run basic sanity checks on the returned nvram cell length. 600 * That length has to be a multiple of a "u16" (i.e.: & 1). 601 * Furthermore, it has to be more than "let's say" 512 bytes 602 * but less than the maximum of AR9300_EEPROM_SIZE (16kb). 603 */ 604 if ((len & 1) == 1 || len < 512 || len >= AR9300_EEPROM_SIZE) { 605 kfree(buf); 606 return -EINVAL; 607 } 608 609 /* devres manages the calibration values release on shutdown */ 610 ah->nvmem_blob = devm_kmemdup(sc->dev, buf, len, GFP_KERNEL); 611 kfree(buf); 612 if (!ah->nvmem_blob) 613 return -ENOMEM; 614 615 ah->nvmem_blob_len = len; 616 ah->ah_flags &= ~AH_USE_EEPROM; 617 ah->ah_flags |= AH_NO_EEP_SWAP; 618 619 return 0; 620 } 621 622 static int ath9k_of_init(struct ath_softc *sc) 623 { 624 struct device_node *np = sc->dev->of_node; 625 struct ath_hw *ah = sc->sc_ah; 626 struct ath_common *common = ath9k_hw_common(ah); 627 enum ath_bus_type bus_type = common->bus_ops->ath_bus_type; 628 char eeprom_name[100]; 629 int ret; 630 631 if (!of_device_is_available(np)) 632 return 0; 633 634 ath_dbg(common, CONFIG, "parsing configuration from OF node\n"); 635 636 if (of_property_read_bool(np, "qca,no-eeprom")) { 637 /* ath9k-eeprom-<bus>-<id>.bin */ 638 scnprintf(eeprom_name, sizeof(eeprom_name), 639 "ath9k-eeprom-%s-%s.bin", 640 ath_bus_type_to_string(bus_type), dev_name(ah->dev)); 641 642 ret = ath9k_eeprom_request(sc, eeprom_name); 643 if (ret) 644 return ret; 645 646 ah->ah_flags &= ~AH_USE_EEPROM; 647 ah->ah_flags |= AH_NO_EEP_SWAP; 648 } 649 650 ret = of_get_mac_address(np, common->macaddr); 651 if (ret == -EPROBE_DEFER) 652 return ret; 653 654 return 0; 655 } 656 657 static int ath9k_init_softc(u16 devid, struct ath_softc *sc, 658 const struct ath_bus_ops *bus_ops) 659 { 660 struct ath_hw *ah = NULL; 661 struct ath9k_hw_capabilities *pCap; 662 struct ath_common *common; 663 int ret = 0, i; 664 int csz = 0; 665 666 ah = devm_kzalloc(sc->dev, sizeof(struct ath_hw), GFP_KERNEL); 667 if (!ah) 668 return -ENOMEM; 669 670 ah->dev = sc->dev; 671 ah->hw = sc->hw; 672 ah->hw_version.devid = devid; 673 ah->ah_flags |= AH_USE_EEPROM; 674 ah->led_pin = -1; 675 ah->reg_ops.read = ath9k_ioread32; 676 ah->reg_ops.multi_read = ath9k_multi_ioread32; 677 ah->reg_ops.write = ath9k_iowrite32; 678 ah->reg_ops.rmw = ath9k_reg_rmw; 679 pCap = &ah->caps; 680 681 common = ath9k_hw_common(ah); 682 683 /* Will be cleared in ath9k_start() */ 684 set_bit(ATH_OP_INVALID, &common->op_flags); 685 686 sc->sc_ah = ah; 687 sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET); 688 sc->tx99_power = MAX_RATE_POWER + 1; 689 init_waitqueue_head(&sc->tx_wait); 690 sc->cur_chan = &sc->chanctx[0]; 691 if (!ath9k_is_chanctx_enabled()) 692 sc->cur_chan->hw_queue_base = 0; 693 694 common->ops = &ah->reg_ops; 695 common->bus_ops = bus_ops; 696 common->ps_ops = &ath9k_ps_ops; 697 common->ah = ah; 698 common->hw = sc->hw; 699 common->priv = sc; 700 common->debug_mask = ath9k_debug; 701 common->btcoex_enabled = ath9k_btcoex_enable == 1; 702 common->disable_ani = false; 703 704 /* 705 * Platform quirks. 706 */ 707 ath9k_init_pcoem_platform(sc); 708 709 ret = ath9k_of_init(sc); 710 if (ret) 711 return ret; 712 713 ret = ath9k_nvmem_request_eeprom(sc); 714 if (ret) 715 return ret; 716 717 if (ath9k_led_active_high != -1) 718 ah->config.led_active_high = ath9k_led_active_high == 1; 719 720 /* 721 * Enable WLAN/BT RX Antenna diversity only when: 722 * 723 * - BTCOEX is disabled. 724 * - the user manually requests the feature. 725 * - the HW cap is set using the platform data. 726 */ 727 if (!common->btcoex_enabled && ath9k_bt_ant_diversity && 728 (pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV)) 729 common->bt_ant_diversity = 1; 730 731 spin_lock_init(&common->cc_lock); 732 spin_lock_init(&sc->intr_lock); 733 spin_lock_init(&sc->sc_serial_rw); 734 spin_lock_init(&sc->sc_pm_lock); 735 spin_lock_init(&sc->chan_lock); 736 mutex_init(&sc->mutex); 737 tasklet_setup(&sc->intr_tq, ath9k_tasklet); 738 tasklet_setup(&sc->bcon_tasklet, ath9k_beacon_tasklet); 739 740 timer_setup(&sc->sleep_timer, ath_ps_full_sleep, 0); 741 INIT_WORK(&sc->hw_reset_work, ath_reset_work); 742 INIT_WORK(&sc->paprd_work, ath_paprd_calibrate); 743 INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work); 744 INIT_DELAYED_WORK(&sc->hw_check_work, ath_hw_check_work); 745 746 ath9k_init_channel_context(sc); 747 748 /* 749 * Cache line size is used to size and align various 750 * structures used to communicate with the hardware. 751 */ 752 ath_read_cachesize(common, &csz); 753 common->cachelsz = csz << 2; /* convert to bytes */ 754 755 /* Initializes the hardware for all supported chipsets */ 756 ret = ath9k_hw_init(ah); 757 if (ret) 758 goto err_hw; 759 760 ret = ath9k_init_queues(sc); 761 if (ret) 762 goto err_queues; 763 764 ret = ath9k_init_btcoex(sc); 765 if (ret) 766 goto err_btcoex; 767 768 ret = ath9k_cmn_init_channels_rates(common); 769 if (ret) 770 goto err_btcoex; 771 772 ret = ath9k_init_p2p(sc); 773 if (ret) 774 goto err_btcoex; 775 776 ath9k_cmn_init_crypto(sc->sc_ah); 777 ath9k_init_misc(sc); 778 ath_chanctx_init(sc); 779 ath9k_offchannel_init(sc); 780 781 if (common->bus_ops->aspm_init) 782 common->bus_ops->aspm_init(common); 783 784 return 0; 785 786 err_btcoex: 787 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) 788 if (ATH_TXQ_SETUP(sc, i)) 789 ath_tx_cleanupq(sc, &sc->tx.txq[i]); 790 err_queues: 791 ath9k_hw_deinit(ah); 792 err_hw: 793 ath9k_eeprom_release(sc); 794 dev_kfree_skb_any(sc->tx99_skb); 795 return ret; 796 } 797 798 static void ath9k_init_band_txpower(struct ath_softc *sc, int band) 799 { 800 struct ieee80211_supported_band *sband; 801 struct ieee80211_channel *chan; 802 struct ath_hw *ah = sc->sc_ah; 803 struct ath_common *common = ath9k_hw_common(ah); 804 struct cfg80211_chan_def chandef; 805 int i; 806 807 sband = &common->sbands[band]; 808 for (i = 0; i < sband->n_channels; i++) { 809 chan = &sband->channels[i]; 810 ah->curchan = &ah->channels[chan->hw_value]; 811 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_HT20); 812 ath9k_cmn_get_channel(sc->hw, ah, &chandef); 813 ath9k_hw_set_txpowerlimit(ah, MAX_COMBINED_POWER, true); 814 } 815 } 816 817 static void ath9k_init_txpower_limits(struct ath_softc *sc) 818 { 819 struct ath_hw *ah = sc->sc_ah; 820 struct ath9k_channel *curchan = ah->curchan; 821 822 if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) 823 ath9k_init_band_txpower(sc, NL80211_BAND_2GHZ); 824 if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) 825 ath9k_init_band_txpower(sc, NL80211_BAND_5GHZ); 826 827 ah->curchan = curchan; 828 } 829 830 static const struct ieee80211_iface_limit if_limits[] = { 831 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) }, 832 { .max = 8, .types = 833 #ifdef CONFIG_MAC80211_MESH 834 BIT(NL80211_IFTYPE_MESH_POINT) | 835 #endif 836 BIT(NL80211_IFTYPE_AP) }, 837 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_CLIENT) | 838 BIT(NL80211_IFTYPE_P2P_GO) }, 839 }; 840 841 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 842 843 static const struct ieee80211_iface_limit if_limits_multi[] = { 844 { .max = 2, .types = BIT(NL80211_IFTYPE_STATION) | 845 BIT(NL80211_IFTYPE_AP) | 846 BIT(NL80211_IFTYPE_P2P_CLIENT) | 847 BIT(NL80211_IFTYPE_P2P_GO) }, 848 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) }, 849 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }, 850 }; 851 852 static const struct ieee80211_iface_combination if_comb_multi[] = { 853 { 854 .limits = if_limits_multi, 855 .n_limits = ARRAY_SIZE(if_limits_multi), 856 .max_interfaces = 3, 857 .num_different_channels = 2, 858 .beacon_int_infra_match = true, 859 }, 860 }; 861 862 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 863 864 static const struct ieee80211_iface_combination if_comb[] = { 865 { 866 .limits = if_limits, 867 .n_limits = ARRAY_SIZE(if_limits), 868 .max_interfaces = 2048, 869 .num_different_channels = 1, 870 .beacon_int_infra_match = true, 871 #ifdef CONFIG_ATH9K_DFS_CERTIFIED 872 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 873 BIT(NL80211_CHAN_WIDTH_20) | 874 BIT(NL80211_CHAN_WIDTH_40), 875 #endif 876 }, 877 }; 878 879 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 880 static void ath9k_set_mcc_capab(struct ath_softc *sc, struct ieee80211_hw *hw) 881 { 882 struct ath_hw *ah = sc->sc_ah; 883 struct ath_common *common = ath9k_hw_common(ah); 884 885 if (!ath9k_is_chanctx_enabled()) 886 return; 887 888 ieee80211_hw_set(hw, QUEUE_CONTROL); 889 hw->queues = ATH9K_NUM_TX_QUEUES; 890 hw->offchannel_tx_hw_queue = hw->queues - 1; 891 hw->wiphy->iface_combinations = if_comb_multi; 892 hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_multi); 893 hw->wiphy->max_scan_ssids = 255; 894 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; 895 hw->wiphy->max_remain_on_channel_duration = 10000; 896 hw->chanctx_data_size = sizeof(void *); 897 hw->extra_beacon_tailroom = 898 sizeof(struct ieee80211_p2p_noa_attr) + 9; 899 900 ath_dbg(common, CHAN_CTX, "Use channel contexts\n"); 901 } 902 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 903 904 static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) 905 { 906 struct ath_hw *ah = sc->sc_ah; 907 struct ath_common *common = ath9k_hw_common(ah); 908 909 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES); 910 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE); 911 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 912 ieee80211_hw_set(hw, SPECTRUM_MGMT); 913 ieee80211_hw_set(hw, PS_NULLFUNC_STACK); 914 ieee80211_hw_set(hw, SIGNAL_DBM); 915 ieee80211_hw_set(hw, RX_INCLUDES_FCS); 916 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING); 917 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 918 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 919 920 if (ath9k_ps_enable) 921 ieee80211_hw_set(hw, SUPPORTS_PS); 922 923 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { 924 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 925 926 if (AR_SREV_9280_20_OR_LATER(ah)) 927 hw->radiotap_mcs_details |= 928 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 929 } 930 931 if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt) 932 ieee80211_hw_set(hw, MFP_CAPABLE); 933 934 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR | 935 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 936 NL80211_FEATURE_P2P_GO_CTWIN; 937 938 if (!IS_ENABLED(CONFIG_ATH9K_TX99)) { 939 hw->wiphy->interface_modes = 940 BIT(NL80211_IFTYPE_P2P_GO) | 941 BIT(NL80211_IFTYPE_P2P_CLIENT) | 942 BIT(NL80211_IFTYPE_AP) | 943 BIT(NL80211_IFTYPE_STATION) | 944 BIT(NL80211_IFTYPE_ADHOC) | 945 BIT(NL80211_IFTYPE_MESH_POINT) | 946 BIT(NL80211_IFTYPE_OCB); 947 948 if (ath9k_is_chanctx_enabled()) 949 hw->wiphy->interface_modes |= 950 BIT(NL80211_IFTYPE_P2P_DEVICE); 951 952 hw->wiphy->iface_combinations = if_comb; 953 hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb); 954 } 955 956 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 957 958 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 959 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 960 hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 961 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_5_10_MHZ; 962 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 963 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 964 965 hw->queues = 4; 966 hw->max_rates = 4; 967 hw->max_listen_interval = 10; 968 hw->max_rate_tries = 10; 969 hw->sta_data_size = sizeof(struct ath_node); 970 hw->vif_data_size = sizeof(struct ath_vif); 971 hw->txq_data_size = sizeof(struct ath_atx_tid); 972 hw->extra_tx_headroom = 4; 973 974 hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1; 975 hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1; 976 977 /* single chain devices with rx diversity */ 978 if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) 979 hw->wiphy->available_antennas_rx = BIT(0) | BIT(1); 980 981 sc->ant_rx = hw->wiphy->available_antennas_rx; 982 sc->ant_tx = hw->wiphy->available_antennas_tx; 983 984 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) 985 hw->wiphy->bands[NL80211_BAND_2GHZ] = 986 &common->sbands[NL80211_BAND_2GHZ]; 987 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) 988 hw->wiphy->bands[NL80211_BAND_5GHZ] = 989 &common->sbands[NL80211_BAND_5GHZ]; 990 991 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 992 ath9k_set_mcc_capab(sc, hw); 993 #endif 994 ath9k_init_wow(hw); 995 ath9k_cmn_reload_chainmask(ah); 996 997 SET_IEEE80211_PERM_ADDR(hw, common->macaddr); 998 999 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1000 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_AIRTIME_FAIRNESS); 1001 wiphy_ext_feature_set(hw->wiphy, 1002 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS); 1003 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); 1004 } 1005 1006 int ath9k_init_device(u16 devid, struct ath_softc *sc, 1007 const struct ath_bus_ops *bus_ops) 1008 { 1009 struct ieee80211_hw *hw = sc->hw; 1010 struct ath_common *common; 1011 struct ath_hw *ah; 1012 int error = 0; 1013 struct ath_regulatory *reg; 1014 1015 /* Bring up device */ 1016 error = ath9k_init_softc(devid, sc, bus_ops); 1017 if (error) 1018 return error; 1019 1020 ah = sc->sc_ah; 1021 common = ath9k_hw_common(ah); 1022 ath9k_set_hw_capab(sc, hw); 1023 1024 /* Initialize regulatory */ 1025 error = ath_regd_init(&common->regulatory, sc->hw->wiphy, 1026 ath9k_reg_notifier); 1027 if (error) 1028 goto deinit; 1029 1030 reg = &common->regulatory; 1031 1032 /* Setup TX DMA */ 1033 error = ath_tx_init(sc, ATH_TXBUF); 1034 if (error != 0) 1035 goto deinit; 1036 1037 /* Setup RX DMA */ 1038 error = ath_rx_init(sc, ATH_RXBUF); 1039 if (error != 0) 1040 goto deinit; 1041 1042 ath9k_init_txpower_limits(sc); 1043 1044 #ifdef CONFIG_MAC80211_LEDS 1045 /* must be initialized before ieee80211_register_hw */ 1046 sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw, 1047 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink, 1048 ARRAY_SIZE(ath9k_tpt_blink)); 1049 #endif 1050 1051 wiphy_read_of_freq_limits(hw->wiphy); 1052 1053 /* Register with mac80211 */ 1054 error = ieee80211_register_hw(hw); 1055 if (error) 1056 goto rx_cleanup; 1057 1058 error = ath9k_init_debug(ah); 1059 if (error) { 1060 ath_err(common, "Unable to create debugfs files\n"); 1061 goto unregister; 1062 } 1063 1064 /* Handle world regulatory */ 1065 if (!ath_is_world_regd(reg)) { 1066 error = regulatory_hint(hw->wiphy, reg->alpha2); 1067 if (error) 1068 goto debug_cleanup; 1069 } 1070 1071 ath_init_leds(sc); 1072 ath_start_rfkill_poll(sc); 1073 1074 return 0; 1075 1076 debug_cleanup: 1077 ath9k_deinit_debug(sc); 1078 unregister: 1079 ieee80211_unregister_hw(hw); 1080 rx_cleanup: 1081 ath_rx_cleanup(sc); 1082 deinit: 1083 ath9k_deinit_softc(sc); 1084 return error; 1085 } 1086 1087 /*****************************/ 1088 /* De-Initialization */ 1089 /*****************************/ 1090 1091 static void ath9k_deinit_softc(struct ath_softc *sc) 1092 { 1093 int i = 0; 1094 1095 ath9k_deinit_p2p(sc); 1096 ath9k_deinit_btcoex(sc); 1097 1098 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) 1099 if (ATH_TXQ_SETUP(sc, i)) 1100 ath_tx_cleanupq(sc, &sc->tx.txq[i]); 1101 1102 timer_delete_sync(&sc->sleep_timer); 1103 ath9k_hw_deinit(sc->sc_ah); 1104 if (sc->dfs_detector != NULL) 1105 sc->dfs_detector->exit(sc->dfs_detector); 1106 1107 ath9k_eeprom_release(sc); 1108 } 1109 1110 void ath9k_deinit_device(struct ath_softc *sc) 1111 { 1112 struct ieee80211_hw *hw = sc->hw; 1113 1114 ath9k_ps_wakeup(sc); 1115 1116 wiphy_rfkill_stop_polling(sc->hw->wiphy); 1117 ath_deinit_leds(sc); 1118 1119 ath9k_ps_restore(sc); 1120 1121 ath9k_deinit_debug(sc); 1122 ath9k_deinit_wow(hw); 1123 ieee80211_unregister_hw(hw); 1124 ath_rx_cleanup(sc); 1125 ath9k_deinit_softc(sc); 1126 } 1127 1128 /************************/ 1129 /* Module Hooks */ 1130 /************************/ 1131 1132 static int __init ath9k_init(void) 1133 { 1134 int error; 1135 1136 error = ath_pci_init(); 1137 if (error < 0) { 1138 pr_err("No PCI devices found, driver not installed\n"); 1139 error = -ENODEV; 1140 goto err_out; 1141 } 1142 1143 error = ath_ahb_init(); 1144 if (error < 0) { 1145 error = -ENODEV; 1146 goto err_pci_exit; 1147 } 1148 1149 dmi_check_system(ath9k_quirks); 1150 1151 return 0; 1152 1153 err_pci_exit: 1154 ath_pci_exit(); 1155 err_out: 1156 return error; 1157 } 1158 module_init(ath9k_init); 1159 1160 static void __exit ath9k_exit(void) 1161 { 1162 is_ath9k_unloaded = true; 1163 ath_ahb_exit(); 1164 ath_pci_exit(); 1165 pr_info("%s: Driver unloaded\n", dev_info); 1166 } 1167 module_exit(ath9k_exit); 1168