2 * Copyright (c) 2008-2011 Atheros Communications Inc.
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.
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.
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19 #include <linux/nl80211.h>
20 #include <linux/pci.h>
21 #include <linux/pci-aspm.h>
22 #include <linux/ath9k_platform.h>
23 #include <linux/module.h>
26 static DEFINE_PCI_DEVICE_TABLE(ath_pci_id_table) = {
27 { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */
28 { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
29 { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
30 { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
31 { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
33 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
37 .driver_data = ATH9K_PCI_D3_L1_WAR },
38 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
40 PCI_VENDOR_ID_FOXCONN,
42 .driver_data = ATH9K_PCI_D3_L1_WAR },
43 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
47 .driver_data = ATH9K_PCI_D3_L1_WAR },
48 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
52 .driver_data = ATH9K_PCI_D3_L1_WAR },
53 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
57 .driver_data = ATH9K_PCI_D3_L1_WAR },
58 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
62 .driver_data = ATH9K_PCI_D3_L1_WAR },
63 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
67 .driver_data = ATH9K_PCI_D3_L1_WAR },
68 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
72 .driver_data = ATH9K_PCI_D3_L1_WAR },
73 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
77 .driver_data = ATH9K_PCI_D3_L1_WAR },
79 /* AR9285 card for Asus */
80 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
84 .driver_data = ATH9K_PCI_BT_ANT_DIV },
86 { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
87 { PCI_VDEVICE(ATHEROS, 0x002C) }, /* PCI-E 802.11n bonded out */
88 { PCI_VDEVICE(ATHEROS, 0x002D) }, /* PCI */
89 { PCI_VDEVICE(ATHEROS, 0x002E) }, /* PCI-E */
90 { PCI_VDEVICE(ATHEROS, 0x0030) }, /* PCI-E AR9300 */
93 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
97 .driver_data = ATH9K_PCI_CUS198 | ATH9K_PCI_BT_ANT_DIV },
98 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
100 PCI_VENDOR_ID_AZWAVE,
102 .driver_data = ATH9K_PCI_CUS198 | ATH9K_PCI_BT_ANT_DIV },
103 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
105 PCI_VENDOR_ID_AZWAVE,
107 .driver_data = ATH9K_PCI_CUS198 | ATH9K_PCI_BT_ANT_DIV },
108 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
110 PCI_VENDOR_ID_AZWAVE,
112 .driver_data = ATH9K_PCI_CUS198 | ATH9K_PCI_BT_ANT_DIV },
115 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
117 PCI_VENDOR_ID_AZWAVE,
119 .driver_data = ATH9K_PCI_CUS230 | ATH9K_PCI_BT_ANT_DIV },
120 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
122 PCI_VENDOR_ID_FOXCONN,
124 .driver_data = ATH9K_PCI_CUS230 | ATH9K_PCI_BT_ANT_DIV },
127 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
129 PCI_VENDOR_ID_ATHEROS,
131 .driver_data = ATH9K_PCI_BT_ANT_DIV },
132 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
134 PCI_VENDOR_ID_ATHEROS,
136 .driver_data = ATH9K_PCI_BT_ANT_DIV },
137 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
141 .driver_data = ATH9K_PCI_BT_ANT_DIV },
142 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
146 .driver_data = ATH9K_PCI_BT_ANT_DIV },
147 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
149 PCI_VENDOR_ID_SAMSUNG,
151 .driver_data = ATH9K_PCI_BT_ANT_DIV },
152 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
154 PCI_VENDOR_ID_SAMSUNG,
156 .driver_data = ATH9K_PCI_BT_ANT_DIV },
157 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
159 PCI_VENDOR_ID_SAMSUNG,
161 .driver_data = ATH9K_PCI_BT_ANT_DIV },
162 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
164 PCI_VENDOR_ID_SAMSUNG,
166 .driver_data = ATH9K_PCI_BT_ANT_DIV },
167 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
169 PCI_VENDOR_ID_SAMSUNG,
171 .driver_data = ATH9K_PCI_BT_ANT_DIV },
172 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
174 PCI_VENDOR_ID_SAMSUNG,
176 .driver_data = ATH9K_PCI_BT_ANT_DIV },
177 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
179 PCI_VENDOR_ID_SAMSUNG,
181 .driver_data = ATH9K_PCI_BT_ANT_DIV },
182 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
184 PCI_VENDOR_ID_SAMSUNG,
186 .driver_data = ATH9K_PCI_BT_ANT_DIV },
187 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
189 PCI_VENDOR_ID_LENOVO,
191 .driver_data = ATH9K_PCI_BT_ANT_DIV },
192 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
194 PCI_VENDOR_ID_LENOVO,
196 .driver_data = ATH9K_PCI_BT_ANT_DIV },
198 { PCI_VDEVICE(ATHEROS, 0x0032) }, /* PCI-E AR9485 */
199 { PCI_VDEVICE(ATHEROS, 0x0033) }, /* PCI-E AR9580 */
202 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
204 PCI_VENDOR_ID_AZWAVE,
206 .driver_data = ATH9K_PCI_CUS217 },
207 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
211 .driver_data = ATH9K_PCI_CUS217 },
213 /* AR9462 with WoW support */
214 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
216 PCI_VENDOR_ID_ATHEROS,
218 .driver_data = ATH9K_PCI_WOW },
219 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
221 PCI_VENDOR_ID_LENOVO,
223 .driver_data = ATH9K_PCI_WOW },
224 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
226 PCI_VENDOR_ID_ATTANSIC,
228 .driver_data = ATH9K_PCI_WOW },
229 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
231 PCI_VENDOR_ID_AZWAVE,
233 .driver_data = ATH9K_PCI_WOW },
234 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
236 PCI_VENDOR_ID_ASUSTEK,
238 .driver_data = ATH9K_PCI_WOW },
239 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
243 .driver_data = ATH9K_PCI_WOW },
244 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
248 .driver_data = ATH9K_PCI_WOW },
249 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
253 .driver_data = ATH9K_PCI_WOW },
254 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
258 .driver_data = ATH9K_PCI_WOW },
259 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
263 .driver_data = ATH9K_PCI_WOW },
264 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
266 0x10CF, /* Fujitsu */
268 .driver_data = ATH9K_PCI_WOW },
270 { PCI_VDEVICE(ATHEROS, 0x0034) }, /* PCI-E AR9462 */
271 { PCI_VDEVICE(ATHEROS, 0x0037) }, /* PCI-E AR1111/AR9485 */
274 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
276 PCI_VENDOR_ID_ATHEROS,
278 .driver_data = ATH9K_PCI_CUS252 |
279 ATH9K_PCI_AR9565_2ANT |
280 ATH9K_PCI_BT_ANT_DIV },
281 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
283 PCI_VENDOR_ID_AZWAVE,
285 .driver_data = ATH9K_PCI_CUS252 |
286 ATH9K_PCI_AR9565_2ANT |
287 ATH9K_PCI_BT_ANT_DIV },
290 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
292 PCI_VENDOR_ID_FOXCONN,
294 .driver_data = ATH9K_PCI_AR9565_1ANT },
295 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
299 .driver_data = ATH9K_PCI_AR9565_1ANT },
300 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
304 .driver_data = ATH9K_PCI_AR9565_1ANT },
305 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
309 .driver_data = ATH9K_PCI_AR9565_1ANT },
310 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
314 .driver_data = ATH9K_PCI_AR9565_1ANT },
315 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
319 .driver_data = ATH9K_PCI_AR9565_1ANT },
321 /* WB335 1-ANT / Antenna Diversity */
322 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
324 PCI_VENDOR_ID_ATHEROS,
326 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
327 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
329 PCI_VENDOR_ID_ATHEROS,
331 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
332 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
334 PCI_VENDOR_ID_ATHEROS,
336 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
337 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
339 PCI_VENDOR_ID_FOXCONN,
341 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
342 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
346 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
347 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
351 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
352 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
356 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
357 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
361 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
362 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
364 PCI_VENDOR_ID_AZWAVE,
366 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
367 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
369 PCI_VENDOR_ID_LENOVO,
371 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
372 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
376 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
377 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
381 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
382 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
386 .driver_data = ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_BT_ANT_DIV },
389 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
391 PCI_VENDOR_ID_SAMSUNG,
393 .driver_data = ATH9K_PCI_AR9565_2ANT },
394 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
396 PCI_VENDOR_ID_SAMSUNG,
398 .driver_data = ATH9K_PCI_AR9565_2ANT },
399 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
401 PCI_VENDOR_ID_SAMSUNG,
403 .driver_data = ATH9K_PCI_AR9565_2ANT },
404 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
406 PCI_VENDOR_ID_SAMSUNG,
408 .driver_data = ATH9K_PCI_AR9565_2ANT },
409 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
411 PCI_VENDOR_ID_SAMSUNG,
413 .driver_data = ATH9K_PCI_AR9565_2ANT },
415 /* WB335 2-ANT / Antenna-Diversity */
416 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
418 PCI_VENDOR_ID_ATHEROS,
420 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
421 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
423 PCI_VENDOR_ID_ATHEROS,
425 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
426 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
430 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
431 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
435 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
436 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
440 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
441 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
443 PCI_VENDOR_ID_AZWAVE,
445 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
446 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
450 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
451 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
455 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
456 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
460 .driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
462 /* PCI-E AR9565 (WB335) */
463 { PCI_VDEVICE(ATHEROS, 0x0036),
464 .driver_data = ATH9K_PCI_BT_ANT_DIV },
470 /* return bus cachesize in 4B word units */
471 static void ath_pci_read_cachesize(struct ath_common *common, int *csz)
473 struct ath_softc *sc = (struct ath_softc *) common->priv;
476 pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE, &u8tmp);
480 * This check was put in to avoid "unpleasant" consequences if
481 * the bootrom has not fully initialized all PCI devices.
482 * Sometimes the cache line size register is not set
486 *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */
489 static bool ath_pci_eeprom_read(struct ath_common *common, u32 off, u16 *data)
491 struct ath_softc *sc = (struct ath_softc *) common->priv;
492 struct ath9k_platform_data *pdata = sc->dev->platform_data;
495 if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
497 "%s: eeprom read failed, offset %08x is out of range\n",
501 *data = pdata->eeprom_data[off];
503 struct ath_hw *ah = (struct ath_hw *) common->ah;
505 common->ops->read(ah, AR5416_EEPROM_OFFSET +
506 (off << AR5416_EEPROM_S));
508 if (!ath9k_hw_wait(ah,
509 AR_EEPROM_STATUS_DATA,
510 AR_EEPROM_STATUS_DATA_BUSY |
511 AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
516 *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA),
517 AR_EEPROM_STATUS_DATA_VAL);
523 /* Need to be called after we discover btcoex capabilities */
524 static void ath_pci_aspm_init(struct ath_common *common)
526 struct ath_softc *sc = (struct ath_softc *) common->priv;
527 struct ath_hw *ah = sc->sc_ah;
528 struct pci_dev *pdev = to_pci_dev(sc->dev);
529 struct pci_dev *parent;
532 if (!ah->is_pciexpress)
535 parent = pdev->bus->self;
539 if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
540 (AR_SREV_9285(ah))) {
541 /* Bluetooth coexistence requires disabling ASPM. */
542 pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL,
543 PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1);
546 * Both upstream and downstream PCIe components should
547 * have the same ASPM settings.
549 pcie_capability_clear_word(parent, PCI_EXP_LNKCTL,
550 PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1);
552 ath_info(common, "Disabling ASPM since BTCOEX is enabled\n");
557 * 0x70c - Ack Frequency Register.
559 * Bits 27:29 - DEFAULT_L1_ENTRANCE_LATENCY.
569 if (AR_SREV_9462(ah))
570 pci_read_config_dword(pdev, 0x70c, &ah->config.aspm_l1_fix);
572 pcie_capability_read_word(parent, PCI_EXP_LNKCTL, &aspm);
573 if (aspm & (PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1)) {
574 ah->aspm_enabled = true;
575 /* Initialize PCIe PM and SERDES registers. */
576 ath9k_hw_configpcipowersave(ah, false);
577 ath_info(common, "ASPM enabled: 0x%x\n", aspm);
581 static const struct ath_bus_ops ath_pci_bus_ops = {
582 .ath_bus_type = ATH_PCI,
583 .read_cachesize = ath_pci_read_cachesize,
584 .eeprom_read = ath_pci_eeprom_read,
585 .aspm_init = ath_pci_aspm_init,
588 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
590 struct ath_softc *sc;
591 struct ieee80211_hw *hw;
597 if (pcim_enable_device(pdev))
600 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
602 pr_err("32-bit DMA not available\n");
606 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
608 pr_err("32-bit DMA consistent DMA enable failed\n");
613 * Cache line size is used to size and align various
614 * structures used to communicate with the hardware.
616 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
619 * Linux 2.4.18 (at least) writes the cache line size
620 * register as a 16-bit wide register which is wrong.
621 * We must have this setup properly for rx buffer
622 * DMA to work so force a reasonable value here if it
625 csz = L1_CACHE_BYTES / sizeof(u32);
626 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
629 * The default setting of latency timer yields poor results,
630 * set it to the value used by other systems. It may be worth
631 * tweaking this setting more.
633 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
635 pci_set_master(pdev);
638 * Disable the RETRY_TIMEOUT register (0x41) to keep
639 * PCI Tx retries from interfering with C3 CPU state.
641 pci_read_config_dword(pdev, 0x40, &val);
642 if ((val & 0x0000ff00) != 0)
643 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
645 ret = pcim_iomap_regions(pdev, BIT(0), "ath9k");
647 dev_err(&pdev->dev, "PCI memory region reserve error\n");
651 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
653 dev_err(&pdev->dev, "No memory for ieee80211_hw\n");
657 SET_IEEE80211_DEV(hw, &pdev->dev);
658 pci_set_drvdata(pdev, hw);
662 sc->dev = &pdev->dev;
663 sc->mem = pcim_iomap_table(pdev)[0];
664 sc->driver_data = id->driver_data;
666 /* Will be cleared in ath9k_start() */
667 set_bit(SC_OP_INVALID, &sc->sc_flags);
669 ret = request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc);
671 dev_err(&pdev->dev, "request_irq failed\n");
677 ret = ath9k_init_device(id->device, sc, &ath_pci_bus_ops);
679 dev_err(&pdev->dev, "Failed to initialize device\n");
683 ath9k_hw_name(sc->sc_ah, hw_name, sizeof(hw_name));
684 wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
685 hw_name, (unsigned long)sc->mem, pdev->irq);
690 free_irq(sc->irq, sc);
692 ieee80211_free_hw(hw);
696 static void ath_pci_remove(struct pci_dev *pdev)
698 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
699 struct ath_softc *sc = hw->priv;
701 if (!is_ath9k_unloaded)
702 sc->sc_ah->ah_flags |= AH_UNPLUGGED;
703 ath9k_deinit_device(sc);
704 free_irq(sc->irq, sc);
705 ieee80211_free_hw(sc->hw);
708 #ifdef CONFIG_PM_SLEEP
710 static int ath_pci_suspend(struct device *device)
712 struct pci_dev *pdev = to_pci_dev(device);
713 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
714 struct ath_softc *sc = hw->priv;
719 /* The device has to be moved to FULLSLEEP forcibly.
720 * Otherwise the chip never moved to full sleep,
721 * when no interface is up.
723 ath9k_stop_btcoex(sc);
724 ath9k_hw_disable(sc->sc_ah);
725 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
730 static int ath_pci_resume(struct device *device)
732 struct pci_dev *pdev = to_pci_dev(device);
733 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
734 struct ath_softc *sc = hw->priv;
735 struct ath_hw *ah = sc->sc_ah;
736 struct ath_common *common = ath9k_hw_common(ah);
740 * Suspend/Resume resets the PCI configuration space, so we have to
741 * re-disable the RETRY_TIMEOUT register (0x41) to keep
742 * PCI Tx retries from interfering with C3 CPU state
744 pci_read_config_dword(pdev, 0x40, &val);
745 if ((val & 0x0000ff00) != 0)
746 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
748 ath_pci_aspm_init(common);
749 ah->reset_power_on = false;
754 static SIMPLE_DEV_PM_OPS(ath9k_pm_ops, ath_pci_suspend, ath_pci_resume);
756 #define ATH9K_PM_OPS (&ath9k_pm_ops)
758 #else /* !CONFIG_PM_SLEEP */
760 #define ATH9K_PM_OPS NULL
762 #endif /* !CONFIG_PM_SLEEP */
765 MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
767 static struct pci_driver ath_pci_driver = {
769 .id_table = ath_pci_id_table,
770 .probe = ath_pci_probe,
771 .remove = ath_pci_remove,
772 .driver.pm = ATH9K_PM_OPS,
775 int ath_pci_init(void)
777 return pci_register_driver(&ath_pci_driver);
780 void ath_pci_exit(void)
782 pci_unregister_driver(&ath_pci_driver);