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/ath9k_platform.h> 22 #include <linux/module.h> 23 #include <linux/of.h> 24 #include <linux/of_net.h> 25 #include <linux/nvmem-consumer.h> 26 #include <linux/relay.h> 27 #include <linux/dmi.h> 28 #include <net/ieee80211_radiotap.h> 29 30 #include "ath9k.h" 31 32 struct ath9k_eeprom_ctx { 33 struct completion complete; 34 struct ath_hw *ah; 35 }; 36 37 static char *dev_info = "ath9k"; 38 39 MODULE_AUTHOR("Atheros Communications"); 40 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); 41 MODULE_LICENSE("Dual BSD/GPL"); 42 43 static unsigned int ath9k_debug = ATH_DBG_DEFAULT; 44 module_param_named(debug, ath9k_debug, uint, 0); 45 MODULE_PARM_DESC(debug, "Debugging mask"); 46 47 int ath9k_modparam_nohwcrypt; 48 module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444); 49 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); 50 51 int ath9k_led_blink; 52 module_param_named(blink, ath9k_led_blink, int, 0444); 53 MODULE_PARM_DESC(blink, "Enable LED blink on activity"); 54 55 static int ath9k_led_active_high = -1; 56 module_param_named(led_active_high, ath9k_led_active_high, int, 0444); 57 MODULE_PARM_DESC(led_active_high, "Invert LED polarity"); 58 59 static int ath9k_btcoex_enable; 60 module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444); 61 MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence"); 62 63 static int ath9k_bt_ant_diversity; 64 module_param_named(bt_ant_diversity, ath9k_bt_ant_diversity, int, 0444); 65 MODULE_PARM_DESC(bt_ant_diversity, "Enable WLAN/BT RX antenna diversity"); 66 67 static int ath9k_ps_enable; 68 module_param_named(ps_enable, ath9k_ps_enable, int, 0444); 69 MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave"); 70 71 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 72 73 int ath9k_use_chanctx; 74 module_param_named(use_chanctx, ath9k_use_chanctx, int, 0444); 75 MODULE_PARM_DESC(use_chanctx, "Enable channel context for concurrency"); 76 77 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 78 79 int ath9k_use_msi; 80 module_param_named(use_msi, ath9k_use_msi, int, 0444); 81 MODULE_PARM_DESC(use_msi, "Use MSI instead of INTx if possible"); 82 83 bool is_ath9k_unloaded; 84 85 #ifdef CONFIG_MAC80211_LEDS 86 static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = { 87 { .throughput = 0 * 1024, .blink_time = 334 }, 88 { .throughput = 1 * 1024, .blink_time = 260 }, 89 { .throughput = 5 * 1024, .blink_time = 220 }, 90 { .throughput = 10 * 1024, .blink_time = 190 }, 91 { .throughput = 20 * 1024, .blink_time = 170 }, 92 { .throughput = 50 * 1024, .blink_time = 150 }, 93 { .throughput = 70 * 1024, .blink_time = 130 }, 94 { .throughput = 100 * 1024, .blink_time = 110 }, 95 { .throughput = 200 * 1024, .blink_time = 80 }, 96 { .throughput = 300 * 1024, .blink_time = 50 }, 97 }; 98 #endif 99 100 static int __init set_use_msi(const struct dmi_system_id *dmi) 101 { 102 ath9k_use_msi = 1; 103 return 1; 104 } 105 106 static const struct dmi_system_id ath9k_quirks[] __initconst = { 107 { 108 .callback = set_use_msi, 109 .ident = "Dell Inspiron 24-3460", 110 .matches = { 111 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 112 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 24-3460"), 113 }, 114 }, 115 { 116 .callback = set_use_msi, 117 .ident = "Dell Vostro 3262", 118 .matches = { 119 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 120 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3262"), 121 }, 122 }, 123 { 124 .callback = set_use_msi, 125 .ident = "Dell Inspiron 3472", 126 .matches = { 127 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 128 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3472"), 129 }, 130 }, 131 { 132 .callback = set_use_msi, 133 .ident = "Dell Vostro 15-3572", 134 .matches = { 135 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 136 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15-3572"), 137 }, 138 }, 139 { 140 .callback = set_use_msi, 141 .ident = "Dell Inspiron 14-3473", 142 .matches = { 143 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 144 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 14-3473"), 145 }, 146 }, 147 {} 148 }; 149 150 static void ath9k_deinit_softc(struct ath_softc *sc); 151 152 static void ath9k_op_ps_wakeup(struct ath_common *common) 153 { 154 ath9k_ps_wakeup((struct ath_softc *) common->priv); 155 } 156 157 static void ath9k_op_ps_restore(struct ath_common *common) 158 { 159 ath9k_ps_restore((struct ath_softc *) common->priv); 160 } 161 162 static const struct ath_ps_ops ath9k_ps_ops = { 163 .wakeup = ath9k_op_ps_wakeup, 164 .restore = ath9k_op_ps_restore, 165 }; 166 167 /* 168 * Read and write, they both share the same lock. We do this to serialize 169 * reads and writes on Atheros 802.11n PCI devices only. This is required 170 * as the FIFO on these devices can only accept sanely 2 requests. 171 */ 172 173 static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) 174 { 175 struct ath_hw *ah = hw_priv; 176 struct ath_common *common = ath9k_hw_common(ah); 177 struct ath_softc *sc = (struct ath_softc *) common->priv; 178 179 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { 180 unsigned long flags; 181 spin_lock_irqsave(&sc->sc_serial_rw, flags); 182 iowrite32(val, sc->mem + reg_offset); 183 spin_unlock_irqrestore(&sc->sc_serial_rw, flags); 184 } else 185 iowrite32(val, sc->mem + reg_offset); 186 } 187 188 static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset) 189 { 190 struct ath_hw *ah = hw_priv; 191 struct ath_common *common = ath9k_hw_common(ah); 192 struct ath_softc *sc = (struct ath_softc *) common->priv; 193 u32 val; 194 195 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { 196 unsigned long flags; 197 spin_lock_irqsave(&sc->sc_serial_rw, flags); 198 val = ioread32(sc->mem + reg_offset); 199 spin_unlock_irqrestore(&sc->sc_serial_rw, flags); 200 } else 201 val = ioread32(sc->mem + reg_offset); 202 return val; 203 } 204 205 static void ath9k_multi_ioread32(void *hw_priv, u32 *addr, 206 u32 *val, u16 count) 207 { 208 int i; 209 210 for (i = 0; i < count; i++) 211 val[i] = ath9k_ioread32(hw_priv, addr[i]); 212 } 213 214 215 static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset, 216 u32 set, u32 clr) 217 { 218 u32 val; 219 220 val = ioread32(sc->mem + reg_offset); 221 val &= ~clr; 222 val |= set; 223 iowrite32(val, sc->mem + reg_offset); 224 225 return val; 226 } 227 228 static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr) 229 { 230 struct ath_hw *ah = hw_priv; 231 struct ath_common *common = ath9k_hw_common(ah); 232 struct ath_softc *sc = (struct ath_softc *) common->priv; 233 unsigned long flags; 234 u32 val; 235 236 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { 237 spin_lock_irqsave(&sc->sc_serial_rw, flags); 238 val = __ath9k_reg_rmw(sc, reg_offset, set, clr); 239 spin_unlock_irqrestore(&sc->sc_serial_rw, flags); 240 } else 241 val = __ath9k_reg_rmw(sc, reg_offset, set, clr); 242 243 return val; 244 } 245 246 /**************************/ 247 /* Initialization */ 248 /**************************/ 249 250 static void ath9k_reg_notifier(struct wiphy *wiphy, 251 struct regulatory_request *request) 252 { 253 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 254 struct ath_softc *sc = hw->priv; 255 struct ath_hw *ah = sc->sc_ah; 256 struct ath_regulatory *reg = ath9k_hw_regulatory(ah); 257 258 ath_reg_notifier_apply(wiphy, request, reg); 259 260 /* synchronize DFS detector if regulatory domain changed */ 261 if (sc->dfs_detector != NULL) 262 sc->dfs_detector->set_dfs_domain(sc->dfs_detector, 263 request->dfs_region); 264 265 /* Set tx power */ 266 if (!ah->curchan) 267 return; 268 269 sc->cur_chan->txpower = 2 * ah->curchan->chan->max_power; 270 ath9k_ps_wakeup(sc); 271 ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false); 272 ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower, 273 sc->cur_chan->txpower, 274 &sc->cur_chan->cur_txpower); 275 ath9k_ps_restore(sc); 276 } 277 278 /* 279 * This function will allocate both the DMA descriptor structure, and the 280 * buffers it contains. These are used to contain the descriptors used 281 * by the system. 282 */ 283 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, 284 struct list_head *head, const char *name, 285 int nbuf, int ndesc, bool is_tx) 286 { 287 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 288 u8 *ds; 289 int i, bsize, desc_len; 290 291 ath_dbg(common, CONFIG, "%s DMA: %u buffers %u desc/buf\n", 292 name, nbuf, ndesc); 293 294 INIT_LIST_HEAD(head); 295 296 if (is_tx) 297 desc_len = sc->sc_ah->caps.tx_desc_len; 298 else 299 desc_len = sizeof(struct ath_desc); 300 301 /* ath_desc must be a multiple of DWORDs */ 302 if ((desc_len % 4) != 0) { 303 ath_err(common, "ath_desc not DWORD aligned\n"); 304 BUG_ON((desc_len % 4) != 0); 305 return -ENOMEM; 306 } 307 308 dd->dd_desc_len = desc_len * nbuf * ndesc; 309 310 /* 311 * Need additional DMA memory because we can't use 312 * descriptors that cross the 4K page boundary. Assume 313 * one skipped descriptor per 4K page. 314 */ 315 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { 316 u32 ndesc_skipped = 317 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); 318 u32 dma_len; 319 320 while (ndesc_skipped) { 321 dma_len = ndesc_skipped * desc_len; 322 dd->dd_desc_len += dma_len; 323 324 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); 325 } 326 } 327 328 /* allocate descriptors */ 329 dd->dd_desc = dmam_alloc_coherent(sc->dev, dd->dd_desc_len, 330 &dd->dd_desc_paddr, GFP_KERNEL); 331 if (!dd->dd_desc) 332 return -ENOMEM; 333 334 ds = dd->dd_desc; 335 ath_dbg(common, CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", 336 name, ds, (u32) dd->dd_desc_len, 337 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); 338 339 /* allocate buffers */ 340 if (is_tx) { 341 struct ath_buf *bf; 342 343 bsize = sizeof(struct ath_buf) * nbuf; 344 bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL); 345 if (!bf) 346 return -ENOMEM; 347 348 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { 349 bf->bf_desc = ds; 350 bf->bf_daddr = DS2PHYS(dd, ds); 351 352 if (!(sc->sc_ah->caps.hw_caps & 353 ATH9K_HW_CAP_4KB_SPLITTRANS)) { 354 /* 355 * Skip descriptor addresses which can cause 4KB 356 * boundary crossing (addr + length) with a 32 dword 357 * descriptor fetch. 358 */ 359 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { 360 BUG_ON((caddr_t) bf->bf_desc >= 361 ((caddr_t) dd->dd_desc + 362 dd->dd_desc_len)); 363 364 ds += (desc_len * ndesc); 365 bf->bf_desc = ds; 366 bf->bf_daddr = DS2PHYS(dd, ds); 367 } 368 } 369 list_add_tail(&bf->list, head); 370 } 371 } else { 372 struct ath_rxbuf *bf; 373 374 bsize = sizeof(struct ath_rxbuf) * nbuf; 375 bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL); 376 if (!bf) 377 return -ENOMEM; 378 379 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { 380 bf->bf_desc = ds; 381 bf->bf_daddr = DS2PHYS(dd, ds); 382 383 if (!(sc->sc_ah->caps.hw_caps & 384 ATH9K_HW_CAP_4KB_SPLITTRANS)) { 385 /* 386 * Skip descriptor addresses which can cause 4KB 387 * boundary crossing (addr + length) with a 32 dword 388 * descriptor fetch. 389 */ 390 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { 391 BUG_ON((caddr_t) bf->bf_desc >= 392 ((caddr_t) dd->dd_desc + 393 dd->dd_desc_len)); 394 395 ds += (desc_len * ndesc); 396 bf->bf_desc = ds; 397 bf->bf_daddr = DS2PHYS(dd, ds); 398 } 399 } 400 list_add_tail(&bf->list, head); 401 } 402 } 403 return 0; 404 } 405 406 static int ath9k_init_queues(struct ath_softc *sc) 407 { 408 int i = 0; 409 410 sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah); 411 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); 412 ath_cabq_update(sc); 413 414 sc->tx.uapsdq = ath_txq_setup(sc, ATH9K_TX_QUEUE_UAPSD, 0); 415 416 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 417 sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i); 418 sc->tx.txq_map[i]->mac80211_qnum = i; 419 } 420 return 0; 421 } 422 423 static void ath9k_init_misc(struct ath_softc *sc) 424 { 425 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 426 int i = 0; 427 428 timer_setup(&common->ani.timer, ath_ani_calibrate, 0); 429 430 common->last_rssi = ATH_RSSI_DUMMY_MARKER; 431 eth_broadcast_addr(common->bssidmask); 432 sc->beacon.slottime = 9; 433 434 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) 435 sc->beacon.bslot[i] = NULL; 436 437 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) 438 sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT; 439 440 sc->spec_priv.ah = sc->sc_ah; 441 sc->spec_priv.spec_config.enabled = 0; 442 sc->spec_priv.spec_config.short_repeat = true; 443 sc->spec_priv.spec_config.count = 8; 444 sc->spec_priv.spec_config.endless = false; 445 sc->spec_priv.spec_config.period = 0xFF; 446 sc->spec_priv.spec_config.fft_period = 0xF; 447 } 448 449 static void ath9k_init_pcoem_platform(struct ath_softc *sc) 450 { 451 struct ath_hw *ah = sc->sc_ah; 452 struct ath9k_hw_capabilities *pCap = &ah->caps; 453 struct ath_common *common = ath9k_hw_common(ah); 454 455 if (!IS_ENABLED(CONFIG_ATH9K_PCOEM)) 456 return; 457 458 if (common->bus_ops->ath_bus_type != ATH_PCI) 459 return; 460 461 if (sc->driver_data & (ATH9K_PCI_CUS198 | 462 ATH9K_PCI_CUS230)) { 463 ah->config.xlna_gpio = 9; 464 ah->config.xatten_margin_cfg = true; 465 ah->config.alt_mingainidx = true; 466 ah->config.ant_ctrl_comm2g_switch_enable = 0x000BBB88; 467 sc->ant_comb.low_rssi_thresh = 20; 468 sc->ant_comb.fast_div_bias = 3; 469 470 ath_info(common, "Set parameters for %s\n", 471 (sc->driver_data & ATH9K_PCI_CUS198) ? 472 "CUS198" : "CUS230"); 473 } 474 475 if (sc->driver_data & ATH9K_PCI_CUS217) 476 ath_info(common, "CUS217 card detected\n"); 477 478 if (sc->driver_data & ATH9K_PCI_CUS252) 479 ath_info(common, "CUS252 card detected\n"); 480 481 if (sc->driver_data & ATH9K_PCI_AR9565_1ANT) 482 ath_info(common, "WB335 1-ANT card detected\n"); 483 484 if (sc->driver_data & ATH9K_PCI_AR9565_2ANT) 485 ath_info(common, "WB335 2-ANT card detected\n"); 486 487 if (sc->driver_data & ATH9K_PCI_KILLER) 488 ath_info(common, "Killer Wireless card detected\n"); 489 490 /* 491 * Some WB335 cards do not support antenna diversity. Since 492 * we use a hardcoded value for AR9565 instead of using the 493 * EEPROM/OTP data, remove the combining feature from 494 * the HW capabilities bitmap. 495 */ 496 if (sc->driver_data & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) { 497 if (!(sc->driver_data & ATH9K_PCI_BT_ANT_DIV)) 498 pCap->hw_caps &= ~ATH9K_HW_CAP_ANT_DIV_COMB; 499 } 500 501 if (sc->driver_data & ATH9K_PCI_BT_ANT_DIV) { 502 pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV; 503 ath_info(common, "Set BT/WLAN RX diversity capability\n"); 504 } 505 506 if (sc->driver_data & ATH9K_PCI_D3_L1_WAR) { 507 ah->config.pcie_waen = 0x0040473b; 508 ath_info(common, "Enable WAR for ASPM D3/L1\n"); 509 } 510 511 /* 512 * The default value of pll_pwrsave is 1. 513 * For certain AR9485 cards, it is set to 0. 514 * For AR9462, AR9565 it's set to 7. 515 */ 516 ah->config.pll_pwrsave = 1; 517 518 if (sc->driver_data & ATH9K_PCI_NO_PLL_PWRSAVE) { 519 ah->config.pll_pwrsave = 0; 520 ath_info(common, "Disable PLL PowerSave\n"); 521 } 522 523 if (sc->driver_data & ATH9K_PCI_LED_ACT_HI) 524 ah->config.led_active_high = true; 525 } 526 527 static void ath9k_eeprom_request_cb(const struct firmware *eeprom_blob, 528 void *ctx) 529 { 530 struct ath9k_eeprom_ctx *ec = ctx; 531 532 if (eeprom_blob) 533 ec->ah->eeprom_blob = eeprom_blob; 534 535 complete(&ec->complete); 536 } 537 538 static int ath9k_eeprom_request(struct ath_softc *sc, const char *name) 539 { 540 struct ath9k_eeprom_ctx ec; 541 struct ath_hw *ah = sc->sc_ah; 542 int err; 543 544 /* try to load the EEPROM content asynchronously */ 545 init_completion(&ec.complete); 546 ec.ah = sc->sc_ah; 547 548 err = request_firmware_nowait(THIS_MODULE, 1, name, sc->dev, GFP_KERNEL, 549 &ec, ath9k_eeprom_request_cb); 550 if (err < 0) { 551 ath_err(ath9k_hw_common(ah), 552 "EEPROM request failed\n"); 553 return err; 554 } 555 556 wait_for_completion(&ec.complete); 557 558 if (!ah->eeprom_blob) { 559 ath_err(ath9k_hw_common(ah), 560 "Unable to load EEPROM file %s\n", name); 561 return -EINVAL; 562 } 563 564 return 0; 565 } 566 567 static void ath9k_eeprom_release(struct ath_softc *sc) 568 { 569 release_firmware(sc->sc_ah->eeprom_blob); 570 } 571 572 static int ath9k_nvmem_request_eeprom(struct ath_softc *sc) 573 { 574 struct ath_hw *ah = sc->sc_ah; 575 struct nvmem_cell *cell; 576 void *buf; 577 size_t len; 578 int err; 579 580 cell = devm_nvmem_cell_get(sc->dev, "calibration"); 581 if (IS_ERR(cell)) { 582 err = PTR_ERR(cell); 583 584 /* nvmem cell might not be defined, or the nvmem 585 * subsystem isn't included. In this case, follow 586 * the established "just return 0;" convention of 587 * ath9k_init_platform to say: 588 * "All good. Nothing to see here. Please go on." 589 */ 590 if (err == -ENOENT || err == -EOPNOTSUPP) 591 return 0; 592 593 return err; 594 } 595 596 buf = nvmem_cell_read(cell, &len); 597 if (IS_ERR(buf)) 598 return PTR_ERR(buf); 599 600 /* run basic sanity checks on the returned nvram cell length. 601 * That length has to be a multiple of a "u16" (i.e.: & 1). 602 * Furthermore, it has to be more than "let's say" 512 bytes 603 * but less than the maximum of AR9300_EEPROM_SIZE (16kb). 604 */ 605 if ((len & 1) == 1 || len < 512 || len >= AR9300_EEPROM_SIZE) { 606 kfree(buf); 607 return -EINVAL; 608 } 609 610 /* devres manages the calibration values release on shutdown */ 611 ah->nvmem_blob = (u16 *)devm_kmemdup(sc->dev, buf, len, GFP_KERNEL); 612 kfree(buf); 613 if (!ah->nvmem_blob) 614 return -ENOMEM; 615 616 ah->nvmem_blob_len = len; 617 ah->ah_flags &= ~AH_USE_EEPROM; 618 ah->ah_flags |= AH_NO_EEP_SWAP; 619 620 return 0; 621 } 622 623 static int ath9k_init_platform(struct ath_softc *sc) 624 { 625 struct ath9k_platform_data *pdata = sc->dev->platform_data; 626 struct ath_hw *ah = sc->sc_ah; 627 struct ath_common *common = ath9k_hw_common(ah); 628 int ret; 629 630 if (!pdata) 631 return 0; 632 633 if (!pdata->use_eeprom) { 634 ah->ah_flags &= ~AH_USE_EEPROM; 635 ah->gpio_mask = pdata->gpio_mask; 636 ah->gpio_val = pdata->gpio_val; 637 ah->led_pin = pdata->led_pin; 638 ah->is_clk_25mhz = pdata->is_clk_25mhz; 639 ah->get_mac_revision = pdata->get_mac_revision; 640 ah->external_reset = pdata->external_reset; 641 ah->disable_2ghz = pdata->disable_2ghz; 642 ah->disable_5ghz = pdata->disable_5ghz; 643 644 if (!pdata->endian_check) 645 ah->ah_flags |= AH_NO_EEP_SWAP; 646 } 647 648 if (pdata->eeprom_name) { 649 ret = ath9k_eeprom_request(sc, pdata->eeprom_name); 650 if (ret) 651 return ret; 652 } 653 654 if (pdata->led_active_high) 655 ah->config.led_active_high = true; 656 657 if (pdata->tx_gain_buffalo) 658 ah->config.tx_gain_buffalo = true; 659 660 if (pdata->macaddr) 661 ether_addr_copy(common->macaddr, pdata->macaddr); 662 663 return 0; 664 } 665 666 static int ath9k_of_init(struct ath_softc *sc) 667 { 668 struct device_node *np = sc->dev->of_node; 669 struct ath_hw *ah = sc->sc_ah; 670 struct ath_common *common = ath9k_hw_common(ah); 671 enum ath_bus_type bus_type = common->bus_ops->ath_bus_type; 672 char eeprom_name[100]; 673 int ret; 674 675 if (!of_device_is_available(np)) 676 return 0; 677 678 ath_dbg(common, CONFIG, "parsing configuration from OF node\n"); 679 680 if (of_property_read_bool(np, "qca,no-eeprom")) { 681 /* ath9k-eeprom-<bus>-<id>.bin */ 682 scnprintf(eeprom_name, sizeof(eeprom_name), 683 "ath9k-eeprom-%s-%s.bin", 684 ath_bus_type_to_string(bus_type), dev_name(ah->dev)); 685 686 ret = ath9k_eeprom_request(sc, eeprom_name); 687 if (ret) 688 return ret; 689 690 ah->ah_flags &= ~AH_USE_EEPROM; 691 ah->ah_flags |= AH_NO_EEP_SWAP; 692 } 693 694 of_get_mac_address(np, common->macaddr); 695 696 return 0; 697 } 698 699 static int ath9k_init_softc(u16 devid, struct ath_softc *sc, 700 const struct ath_bus_ops *bus_ops) 701 { 702 struct ath_hw *ah = NULL; 703 struct ath9k_hw_capabilities *pCap; 704 struct ath_common *common; 705 int ret = 0, i; 706 int csz = 0; 707 708 ah = devm_kzalloc(sc->dev, sizeof(struct ath_hw), GFP_KERNEL); 709 if (!ah) 710 return -ENOMEM; 711 712 ah->dev = sc->dev; 713 ah->hw = sc->hw; 714 ah->hw_version.devid = devid; 715 ah->ah_flags |= AH_USE_EEPROM; 716 ah->led_pin = -1; 717 ah->reg_ops.read = ath9k_ioread32; 718 ah->reg_ops.multi_read = ath9k_multi_ioread32; 719 ah->reg_ops.write = ath9k_iowrite32; 720 ah->reg_ops.rmw = ath9k_reg_rmw; 721 pCap = &ah->caps; 722 723 common = ath9k_hw_common(ah); 724 725 /* Will be cleared in ath9k_start() */ 726 set_bit(ATH_OP_INVALID, &common->op_flags); 727 728 sc->sc_ah = ah; 729 sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET); 730 sc->tx99_power = MAX_RATE_POWER + 1; 731 init_waitqueue_head(&sc->tx_wait); 732 sc->cur_chan = &sc->chanctx[0]; 733 if (!ath9k_is_chanctx_enabled()) 734 sc->cur_chan->hw_queue_base = 0; 735 736 common->ops = &ah->reg_ops; 737 common->bus_ops = bus_ops; 738 common->ps_ops = &ath9k_ps_ops; 739 common->ah = ah; 740 common->hw = sc->hw; 741 common->priv = sc; 742 common->debug_mask = ath9k_debug; 743 common->btcoex_enabled = ath9k_btcoex_enable == 1; 744 common->disable_ani = false; 745 746 /* 747 * Platform quirks. 748 */ 749 ath9k_init_pcoem_platform(sc); 750 751 ret = ath9k_init_platform(sc); 752 if (ret) 753 return ret; 754 755 ret = ath9k_of_init(sc); 756 if (ret) 757 return ret; 758 759 ret = ath9k_nvmem_request_eeprom(sc); 760 if (ret) 761 return ret; 762 763 if (ath9k_led_active_high != -1) 764 ah->config.led_active_high = ath9k_led_active_high == 1; 765 766 /* 767 * Enable WLAN/BT RX Antenna diversity only when: 768 * 769 * - BTCOEX is disabled. 770 * - the user manually requests the feature. 771 * - the HW cap is set using the platform data. 772 */ 773 if (!common->btcoex_enabled && ath9k_bt_ant_diversity && 774 (pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV)) 775 common->bt_ant_diversity = 1; 776 777 spin_lock_init(&common->cc_lock); 778 spin_lock_init(&sc->intr_lock); 779 spin_lock_init(&sc->sc_serial_rw); 780 spin_lock_init(&sc->sc_pm_lock); 781 spin_lock_init(&sc->chan_lock); 782 mutex_init(&sc->mutex); 783 tasklet_setup(&sc->intr_tq, ath9k_tasklet); 784 tasklet_setup(&sc->bcon_tasklet, ath9k_beacon_tasklet); 785 786 timer_setup(&sc->sleep_timer, ath_ps_full_sleep, 0); 787 INIT_WORK(&sc->hw_reset_work, ath_reset_work); 788 INIT_WORK(&sc->paprd_work, ath_paprd_calibrate); 789 INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work); 790 INIT_DELAYED_WORK(&sc->hw_check_work, ath_hw_check_work); 791 792 ath9k_init_channel_context(sc); 793 794 /* 795 * Cache line size is used to size and align various 796 * structures used to communicate with the hardware. 797 */ 798 ath_read_cachesize(common, &csz); 799 common->cachelsz = csz << 2; /* convert to bytes */ 800 801 /* Initializes the hardware for all supported chipsets */ 802 ret = ath9k_hw_init(ah); 803 if (ret) 804 goto err_hw; 805 806 ret = ath9k_init_queues(sc); 807 if (ret) 808 goto err_queues; 809 810 ret = ath9k_init_btcoex(sc); 811 if (ret) 812 goto err_btcoex; 813 814 ret = ath9k_cmn_init_channels_rates(common); 815 if (ret) 816 goto err_btcoex; 817 818 ret = ath9k_init_p2p(sc); 819 if (ret) 820 goto err_btcoex; 821 822 ath9k_cmn_init_crypto(sc->sc_ah); 823 ath9k_init_misc(sc); 824 ath_chanctx_init(sc); 825 ath9k_offchannel_init(sc); 826 827 if (common->bus_ops->aspm_init) 828 common->bus_ops->aspm_init(common); 829 830 return 0; 831 832 err_btcoex: 833 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) 834 if (ATH_TXQ_SETUP(sc, i)) 835 ath_tx_cleanupq(sc, &sc->tx.txq[i]); 836 err_queues: 837 ath9k_hw_deinit(ah); 838 err_hw: 839 ath9k_eeprom_release(sc); 840 dev_kfree_skb_any(sc->tx99_skb); 841 return ret; 842 } 843 844 static void ath9k_init_band_txpower(struct ath_softc *sc, int band) 845 { 846 struct ieee80211_supported_band *sband; 847 struct ieee80211_channel *chan; 848 struct ath_hw *ah = sc->sc_ah; 849 struct ath_common *common = ath9k_hw_common(ah); 850 struct cfg80211_chan_def chandef; 851 int i; 852 853 sband = &common->sbands[band]; 854 for (i = 0; i < sband->n_channels; i++) { 855 chan = &sband->channels[i]; 856 ah->curchan = &ah->channels[chan->hw_value]; 857 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_HT20); 858 ath9k_cmn_get_channel(sc->hw, ah, &chandef); 859 ath9k_hw_set_txpowerlimit(ah, MAX_COMBINED_POWER, true); 860 } 861 } 862 863 static void ath9k_init_txpower_limits(struct ath_softc *sc) 864 { 865 struct ath_hw *ah = sc->sc_ah; 866 struct ath9k_channel *curchan = ah->curchan; 867 868 if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) 869 ath9k_init_band_txpower(sc, NL80211_BAND_2GHZ); 870 if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) 871 ath9k_init_band_txpower(sc, NL80211_BAND_5GHZ); 872 873 ah->curchan = curchan; 874 } 875 876 static const struct ieee80211_iface_limit if_limits[] = { 877 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) }, 878 { .max = 8, .types = 879 #ifdef CONFIG_MAC80211_MESH 880 BIT(NL80211_IFTYPE_MESH_POINT) | 881 #endif 882 BIT(NL80211_IFTYPE_AP) }, 883 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_CLIENT) | 884 BIT(NL80211_IFTYPE_P2P_GO) }, 885 }; 886 887 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 888 889 static const struct ieee80211_iface_limit if_limits_multi[] = { 890 { .max = 2, .types = BIT(NL80211_IFTYPE_STATION) | 891 BIT(NL80211_IFTYPE_AP) | 892 BIT(NL80211_IFTYPE_P2P_CLIENT) | 893 BIT(NL80211_IFTYPE_P2P_GO) }, 894 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) }, 895 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }, 896 }; 897 898 static const struct ieee80211_iface_combination if_comb_multi[] = { 899 { 900 .limits = if_limits_multi, 901 .n_limits = ARRAY_SIZE(if_limits_multi), 902 .max_interfaces = 3, 903 .num_different_channels = 2, 904 .beacon_int_infra_match = true, 905 }, 906 }; 907 908 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 909 910 static const struct ieee80211_iface_combination if_comb[] = { 911 { 912 .limits = if_limits, 913 .n_limits = ARRAY_SIZE(if_limits), 914 .max_interfaces = 2048, 915 .num_different_channels = 1, 916 .beacon_int_infra_match = true, 917 #ifdef CONFIG_ATH9K_DFS_CERTIFIED 918 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 919 BIT(NL80211_CHAN_WIDTH_20) | 920 BIT(NL80211_CHAN_WIDTH_40), 921 #endif 922 }, 923 }; 924 925 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 926 static void ath9k_set_mcc_capab(struct ath_softc *sc, struct ieee80211_hw *hw) 927 { 928 struct ath_hw *ah = sc->sc_ah; 929 struct ath_common *common = ath9k_hw_common(ah); 930 931 if (!ath9k_is_chanctx_enabled()) 932 return; 933 934 ieee80211_hw_set(hw, QUEUE_CONTROL); 935 hw->queues = ATH9K_NUM_TX_QUEUES; 936 hw->offchannel_tx_hw_queue = hw->queues - 1; 937 hw->wiphy->iface_combinations = if_comb_multi; 938 hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_multi); 939 hw->wiphy->max_scan_ssids = 255; 940 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; 941 hw->wiphy->max_remain_on_channel_duration = 10000; 942 hw->chanctx_data_size = sizeof(void *); 943 hw->extra_beacon_tailroom = 944 sizeof(struct ieee80211_p2p_noa_attr) + 9; 945 946 ath_dbg(common, CHAN_CTX, "Use channel contexts\n"); 947 } 948 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ 949 950 static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) 951 { 952 struct ath_hw *ah = sc->sc_ah; 953 struct ath_common *common = ath9k_hw_common(ah); 954 955 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES); 956 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE); 957 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 958 ieee80211_hw_set(hw, SPECTRUM_MGMT); 959 ieee80211_hw_set(hw, PS_NULLFUNC_STACK); 960 ieee80211_hw_set(hw, SIGNAL_DBM); 961 ieee80211_hw_set(hw, RX_INCLUDES_FCS); 962 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING); 963 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 964 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 965 966 if (ath9k_ps_enable) 967 ieee80211_hw_set(hw, SUPPORTS_PS); 968 969 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { 970 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 971 972 if (AR_SREV_9280_20_OR_LATER(ah)) 973 hw->radiotap_mcs_details |= 974 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 975 } 976 977 if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt) 978 ieee80211_hw_set(hw, MFP_CAPABLE); 979 980 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR | 981 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 982 NL80211_FEATURE_P2P_GO_CTWIN; 983 984 if (!IS_ENABLED(CONFIG_ATH9K_TX99)) { 985 hw->wiphy->interface_modes = 986 BIT(NL80211_IFTYPE_P2P_GO) | 987 BIT(NL80211_IFTYPE_P2P_CLIENT) | 988 BIT(NL80211_IFTYPE_AP) | 989 BIT(NL80211_IFTYPE_STATION) | 990 BIT(NL80211_IFTYPE_ADHOC) | 991 BIT(NL80211_IFTYPE_MESH_POINT) | 992 BIT(NL80211_IFTYPE_OCB); 993 994 if (ath9k_is_chanctx_enabled()) 995 hw->wiphy->interface_modes |= 996 BIT(NL80211_IFTYPE_P2P_DEVICE); 997 998 hw->wiphy->iface_combinations = if_comb; 999 hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb); 1000 } 1001 1002 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 1003 1004 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 1005 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 1006 hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 1007 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_5_10_MHZ; 1008 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 1009 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 1010 1011 hw->queues = 4; 1012 hw->max_rates = 4; 1013 hw->max_listen_interval = 10; 1014 hw->max_rate_tries = 10; 1015 hw->sta_data_size = sizeof(struct ath_node); 1016 hw->vif_data_size = sizeof(struct ath_vif); 1017 hw->txq_data_size = sizeof(struct ath_atx_tid); 1018 hw->extra_tx_headroom = 4; 1019 1020 hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1; 1021 hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1; 1022 1023 /* single chain devices with rx diversity */ 1024 if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) 1025 hw->wiphy->available_antennas_rx = BIT(0) | BIT(1); 1026 1027 sc->ant_rx = hw->wiphy->available_antennas_rx; 1028 sc->ant_tx = hw->wiphy->available_antennas_tx; 1029 1030 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) 1031 hw->wiphy->bands[NL80211_BAND_2GHZ] = 1032 &common->sbands[NL80211_BAND_2GHZ]; 1033 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) 1034 hw->wiphy->bands[NL80211_BAND_5GHZ] = 1035 &common->sbands[NL80211_BAND_5GHZ]; 1036 1037 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 1038 ath9k_set_mcc_capab(sc, hw); 1039 #endif 1040 ath9k_init_wow(hw); 1041 ath9k_cmn_reload_chainmask(ah); 1042 1043 SET_IEEE80211_PERM_ADDR(hw, common->macaddr); 1044 1045 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1046 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_AIRTIME_FAIRNESS); 1047 wiphy_ext_feature_set(hw->wiphy, 1048 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS); 1049 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); 1050 } 1051 1052 int ath9k_init_device(u16 devid, struct ath_softc *sc, 1053 const struct ath_bus_ops *bus_ops) 1054 { 1055 struct ieee80211_hw *hw = sc->hw; 1056 struct ath_common *common; 1057 struct ath_hw *ah; 1058 int error = 0; 1059 struct ath_regulatory *reg; 1060 1061 /* Bring up device */ 1062 error = ath9k_init_softc(devid, sc, bus_ops); 1063 if (error) 1064 return error; 1065 1066 ah = sc->sc_ah; 1067 common = ath9k_hw_common(ah); 1068 ath9k_set_hw_capab(sc, hw); 1069 1070 /* Initialize regulatory */ 1071 error = ath_regd_init(&common->regulatory, sc->hw->wiphy, 1072 ath9k_reg_notifier); 1073 if (error) 1074 goto deinit; 1075 1076 reg = &common->regulatory; 1077 1078 /* Setup TX DMA */ 1079 error = ath_tx_init(sc, ATH_TXBUF); 1080 if (error != 0) 1081 goto deinit; 1082 1083 /* Setup RX DMA */ 1084 error = ath_rx_init(sc, ATH_RXBUF); 1085 if (error != 0) 1086 goto deinit; 1087 1088 ath9k_init_txpower_limits(sc); 1089 1090 #ifdef CONFIG_MAC80211_LEDS 1091 /* must be initialized before ieee80211_register_hw */ 1092 sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw, 1093 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink, 1094 ARRAY_SIZE(ath9k_tpt_blink)); 1095 #endif 1096 1097 wiphy_read_of_freq_limits(hw->wiphy); 1098 1099 /* Register with mac80211 */ 1100 error = ieee80211_register_hw(hw); 1101 if (error) 1102 goto rx_cleanup; 1103 1104 error = ath9k_init_debug(ah); 1105 if (error) { 1106 ath_err(common, "Unable to create debugfs files\n"); 1107 goto unregister; 1108 } 1109 1110 /* Handle world regulatory */ 1111 if (!ath_is_world_regd(reg)) { 1112 error = regulatory_hint(hw->wiphy, reg->alpha2); 1113 if (error) 1114 goto debug_cleanup; 1115 } 1116 1117 ath_init_leds(sc); 1118 ath_start_rfkill_poll(sc); 1119 1120 return 0; 1121 1122 debug_cleanup: 1123 ath9k_deinit_debug(sc); 1124 unregister: 1125 ieee80211_unregister_hw(hw); 1126 rx_cleanup: 1127 ath_rx_cleanup(sc); 1128 deinit: 1129 ath9k_deinit_softc(sc); 1130 return error; 1131 } 1132 1133 /*****************************/ 1134 /* De-Initialization */ 1135 /*****************************/ 1136 1137 static void ath9k_deinit_softc(struct ath_softc *sc) 1138 { 1139 int i = 0; 1140 1141 ath9k_deinit_p2p(sc); 1142 ath9k_deinit_btcoex(sc); 1143 1144 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) 1145 if (ATH_TXQ_SETUP(sc, i)) 1146 ath_tx_cleanupq(sc, &sc->tx.txq[i]); 1147 1148 del_timer_sync(&sc->sleep_timer); 1149 ath9k_hw_deinit(sc->sc_ah); 1150 if (sc->dfs_detector != NULL) 1151 sc->dfs_detector->exit(sc->dfs_detector); 1152 1153 ath9k_eeprom_release(sc); 1154 } 1155 1156 void ath9k_deinit_device(struct ath_softc *sc) 1157 { 1158 struct ieee80211_hw *hw = sc->hw; 1159 1160 ath9k_ps_wakeup(sc); 1161 1162 wiphy_rfkill_stop_polling(sc->hw->wiphy); 1163 ath_deinit_leds(sc); 1164 1165 ath9k_ps_restore(sc); 1166 1167 ath9k_deinit_debug(sc); 1168 ath9k_deinit_wow(hw); 1169 ieee80211_unregister_hw(hw); 1170 ath_rx_cleanup(sc); 1171 ath9k_deinit_softc(sc); 1172 } 1173 1174 /************************/ 1175 /* Module Hooks */ 1176 /************************/ 1177 1178 static int __init ath9k_init(void) 1179 { 1180 int error; 1181 1182 error = ath_pci_init(); 1183 if (error < 0) { 1184 pr_err("No PCI devices found, driver not installed\n"); 1185 error = -ENODEV; 1186 goto err_out; 1187 } 1188 1189 error = ath_ahb_init(); 1190 if (error < 0) { 1191 error = -ENODEV; 1192 goto err_pci_exit; 1193 } 1194 1195 dmi_check_system(ath9k_quirks); 1196 1197 return 0; 1198 1199 err_pci_exit: 1200 ath_pci_exit(); 1201 err_out: 1202 return error; 1203 } 1204 module_init(ath9k_init); 1205 1206 static void __exit ath9k_exit(void) 1207 { 1208 is_ath9k_unloaded = true; 1209 ath_ahb_exit(); 1210 ath_pci_exit(); 1211 pr_info("%s: Driver unloaded\n", dev_info); 1212 } 1213 module_exit(ath9k_exit); 1214