Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 1 | /* |
Sujith | cee075a | 2009-03-13 09:07:23 +0530 | [diff] [blame] | 2 | * Copyright (c) 2008-2009 Atheros Communications Inc. |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/nl80211.h> |
| 18 | #include <linux/pci.h> |
Sujith | 394cf0a | 2009-02-09 13:26:54 +0530 | [diff] [blame] | 19 | #include "ath9k.h" |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 20 | |
Alexey Dobriyan | a3aa188 | 2010-01-07 11:58:11 +0000 | [diff] [blame] | 21 | static DEFINE_PCI_DEVICE_TABLE(ath_pci_id_table) = { |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 22 | { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */ |
| 23 | { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */ |
| 24 | { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */ |
| 25 | { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */ |
| 26 | { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */ |
| 27 | { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */ |
Luis R. Rodriguez | 5ffaf8a | 2010-02-02 11:58:33 -0500 | [diff] [blame] | 28 | { PCI_VDEVICE(ATHEROS, 0x002C) }, /* PCI-E 802.11n bonded out */ |
Vivek Natarajan | ac88b6e | 2009-07-23 10:59:57 +0530 | [diff] [blame] | 29 | { PCI_VDEVICE(ATHEROS, 0x002D) }, /* PCI */ |
| 30 | { PCI_VDEVICE(ATHEROS, 0x002E) }, /* PCI-E */ |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 31 | { 0 } |
| 32 | }; |
| 33 | |
| 34 | /* return bus cachesize in 4B word units */ |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 35 | static void ath_pci_read_cachesize(struct ath_common *common, int *csz) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 36 | { |
Luis R. Rodriguez | bc974f4 | 2009-09-28 02:54:40 -0400 | [diff] [blame] | 37 | struct ath_softc *sc = (struct ath_softc *) common->priv; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 38 | u8 u8tmp; |
| 39 | |
Vasanthakumar Thiagarajan | f020979 | 2009-09-07 17:46:50 +0530 | [diff] [blame] | 40 | pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE, &u8tmp); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 41 | *csz = (int)u8tmp; |
| 42 | |
| 43 | /* |
| 44 | * This check was put in to avoid "unplesant" consequences if |
| 45 | * the bootrom has not fully initialized all PCI devices. |
| 46 | * Sometimes the cache line size register is not set |
| 47 | */ |
| 48 | |
| 49 | if (*csz == 0) |
| 50 | *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */ |
| 51 | } |
| 52 | |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 53 | static bool ath_pci_eeprom_read(struct ath_common *common, u32 off, u16 *data) |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 54 | { |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 55 | struct ath_hw *ah = (struct ath_hw *) common->ah; |
| 56 | |
Luis R. Rodriguez | 475a6e4 | 2009-09-23 23:06:59 -0400 | [diff] [blame] | 57 | common->ops->read(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S)); |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 58 | |
| 59 | if (!ath9k_hw_wait(ah, |
| 60 | AR_EEPROM_STATUS_DATA, |
| 61 | AR_EEPROM_STATUS_DATA_BUSY | |
Sujith | 0caa7b1 | 2009-02-16 13:23:20 +0530 | [diff] [blame] | 62 | AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, |
| 63 | AH_WAIT_TIMEOUT)) { |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 64 | return false; |
| 65 | } |
| 66 | |
Luis R. Rodriguez | 475a6e4 | 2009-09-23 23:06:59 -0400 | [diff] [blame] | 67 | *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA), |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 68 | AR_EEPROM_STATUS_DATA_VAL); |
| 69 | |
| 70 | return true; |
| 71 | } |
| 72 | |
Luis R. Rodriguez | 867633f | 2009-09-10 12:12:23 -0700 | [diff] [blame] | 73 | /* |
| 74 | * Bluetooth coexistance requires disabling ASPM. |
| 75 | */ |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 76 | static void ath_pci_bt_coex_prep(struct ath_common *common) |
Luis R. Rodriguez | 867633f | 2009-09-10 12:12:23 -0700 | [diff] [blame] | 77 | { |
Luis R. Rodriguez | bc974f4 | 2009-09-28 02:54:40 -0400 | [diff] [blame] | 78 | struct ath_softc *sc = (struct ath_softc *) common->priv; |
Luis R. Rodriguez | 867633f | 2009-09-10 12:12:23 -0700 | [diff] [blame] | 79 | struct pci_dev *pdev = to_pci_dev(sc->dev); |
| 80 | u8 aspm; |
| 81 | |
| 82 | if (!pdev->is_pcie) |
| 83 | return; |
| 84 | |
| 85 | pci_read_config_byte(pdev, ATH_PCIE_CAP_LINK_CTRL, &aspm); |
| 86 | aspm &= ~(ATH_PCIE_CAP_LINK_L0S | ATH_PCIE_CAP_LINK_L1); |
| 87 | pci_write_config_byte(pdev, ATH_PCIE_CAP_LINK_CTRL, aspm); |
| 88 | } |
| 89 | |
Tobias Klauser | 83bd11a | 2009-12-23 14:04:43 +0100 | [diff] [blame] | 90 | static const struct ath_bus_ops ath_pci_bus_ops = { |
Sujith | 497ad9a | 2010-04-01 10:28:20 +0530 | [diff] [blame] | 91 | .ath_bus_type = ATH_PCI, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 92 | .read_cachesize = ath_pci_read_cachesize, |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 93 | .eeprom_read = ath_pci_eeprom_read, |
Luis R. Rodriguez | 867633f | 2009-09-10 12:12:23 -0700 | [diff] [blame] | 94 | .bt_coex_prep = ath_pci_bt_coex_prep, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 95 | }; |
| 96 | |
| 97 | static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| 98 | { |
| 99 | void __iomem *mem; |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 100 | struct ath_wiphy *aphy; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 101 | struct ath_softc *sc; |
| 102 | struct ieee80211_hw *hw; |
| 103 | u8 csz; |
Vasanthakumar Thiagarajan | aeac355 | 2009-09-09 15:25:49 +0530 | [diff] [blame] | 104 | u16 subsysid; |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 105 | u32 val; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 106 | int ret = 0; |
Luis R. Rodriguez | f934c4d | 2009-10-27 12:59:34 -0400 | [diff] [blame] | 107 | char hw_name[64]; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 108 | |
| 109 | if (pci_enable_device(pdev)) |
| 110 | return -EIO; |
| 111 | |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 112 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 113 | if (ret) { |
| 114 | printk(KERN_ERR "ath9k: 32-bit DMA not available\n"); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 115 | goto err_dma; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 116 | } |
| 117 | |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 118 | ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 119 | if (ret) { |
| 120 | printk(KERN_ERR "ath9k: 32-bit DMA consistent " |
| 121 | "DMA enable failed\n"); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 122 | goto err_dma; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | /* |
| 126 | * Cache line size is used to size and align various |
| 127 | * structures used to communicate with the hardware. |
| 128 | */ |
| 129 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz); |
| 130 | if (csz == 0) { |
| 131 | /* |
| 132 | * Linux 2.4.18 (at least) writes the cache line size |
| 133 | * register as a 16-bit wide register which is wrong. |
| 134 | * We must have this setup properly for rx buffer |
| 135 | * DMA to work so force a reasonable value here if it |
| 136 | * comes up zero. |
| 137 | */ |
| 138 | csz = L1_CACHE_BYTES / sizeof(u32); |
| 139 | pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz); |
| 140 | } |
| 141 | /* |
| 142 | * The default setting of latency timer yields poor results, |
| 143 | * set it to the value used by other systems. It may be worth |
| 144 | * tweaking this setting more. |
| 145 | */ |
| 146 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8); |
| 147 | |
| 148 | pci_set_master(pdev); |
| 149 | |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 150 | /* |
| 151 | * Disable the RETRY_TIMEOUT register (0x41) to keep |
| 152 | * PCI Tx retries from interfering with C3 CPU state. |
| 153 | */ |
| 154 | pci_read_config_dword(pdev, 0x40, &val); |
| 155 | if ((val & 0x0000ff00) != 0) |
| 156 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); |
| 157 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 158 | ret = pci_request_region(pdev, 0, "ath9k"); |
| 159 | if (ret) { |
| 160 | dev_err(&pdev->dev, "PCI memory region reserve error\n"); |
| 161 | ret = -ENODEV; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 162 | goto err_region; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | mem = pci_iomap(pdev, 0, 0); |
| 166 | if (!mem) { |
| 167 | printk(KERN_ERR "PCI memory map error\n") ; |
| 168 | ret = -EIO; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 169 | goto err_iomap; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 170 | } |
| 171 | |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 172 | hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) + |
| 173 | sizeof(struct ath_softc), &ath9k_ops); |
Luis R. Rodriguez | db6be53 | 2009-09-02 16:34:57 -0700 | [diff] [blame] | 174 | if (!hw) { |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 175 | dev_err(&pdev->dev, "No memory for ieee80211_hw\n"); |
Luis R. Rodriguez | db6be53 | 2009-09-02 16:34:57 -0700 | [diff] [blame] | 176 | ret = -ENOMEM; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 177 | goto err_alloc_hw; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | SET_IEEE80211_DEV(hw, &pdev->dev); |
| 181 | pci_set_drvdata(pdev, hw); |
| 182 | |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 183 | aphy = hw->priv; |
| 184 | sc = (struct ath_softc *) (aphy + 1); |
| 185 | aphy->sc = sc; |
| 186 | aphy->hw = hw; |
| 187 | sc->pri_wiphy = aphy; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 188 | sc->hw = hw; |
| 189 | sc->dev = &pdev->dev; |
| 190 | sc->mem = mem; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 191 | |
Sujith | 5e4ea1f | 2010-01-14 10:20:57 +0530 | [diff] [blame] | 192 | /* Will be cleared in ath9k_start() */ |
| 193 | sc->sc_flags |= SC_OP_INVALID; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 194 | |
Luis R. Rodriguez | fc548af | 2009-09-02 17:06:21 -0700 | [diff] [blame] | 195 | ret = request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc); |
Luis R. Rodriguez | 580171f | 2009-09-02 17:02:18 -0700 | [diff] [blame] | 196 | if (ret) { |
| 197 | dev_err(&pdev->dev, "request_irq failed\n"); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 198 | goto err_irq; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | sc->irq = pdev->irq; |
| 202 | |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 203 | pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsysid); |
| 204 | ret = ath9k_init_device(id->device, sc, subsysid, &ath_pci_bus_ops); |
| 205 | if (ret) { |
| 206 | dev_err(&pdev->dev, "Failed to initialize device\n"); |
| 207 | goto err_init; |
| 208 | } |
| 209 | |
| 210 | ath9k_hw_name(sc->sc_ah, hw_name, sizeof(hw_name)); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 211 | printk(KERN_INFO |
Luis R. Rodriguez | f934c4d | 2009-10-27 12:59:34 -0400 | [diff] [blame] | 212 | "%s: %s mem=0x%lx, irq=%d\n", |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 213 | wiphy_name(hw->wiphy), |
Luis R. Rodriguez | f934c4d | 2009-10-27 12:59:34 -0400 | [diff] [blame] | 214 | hw_name, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 215 | (unsigned long)mem, pdev->irq); |
| 216 | |
| 217 | return 0; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 218 | |
| 219 | err_init: |
| 220 | free_irq(sc->irq, sc); |
| 221 | err_irq: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 222 | ieee80211_free_hw(hw); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 223 | err_alloc_hw: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 224 | pci_iounmap(pdev, mem); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 225 | err_iomap: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 226 | pci_release_region(pdev, 0); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 227 | err_region: |
| 228 | /* Nothing */ |
| 229 | err_dma: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 230 | pci_disable_device(pdev); |
| 231 | return ret; |
| 232 | } |
| 233 | |
| 234 | static void ath_pci_remove(struct pci_dev *pdev) |
| 235 | { |
| 236 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 237 | struct ath_wiphy *aphy = hw->priv; |
| 238 | struct ath_softc *sc = aphy->sc; |
Pavel Roskin | ab5132a | 2010-01-30 21:37:24 -0500 | [diff] [blame] | 239 | void __iomem *mem = sc->mem; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 240 | |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 241 | ath9k_deinit_device(sc); |
| 242 | free_irq(sc->irq, sc); |
| 243 | ieee80211_free_hw(sc->hw); |
Pavel Roskin | ab5132a | 2010-01-30 21:37:24 -0500 | [diff] [blame] | 244 | |
| 245 | pci_iounmap(pdev, mem); |
| 246 | pci_disable_device(pdev); |
| 247 | pci_release_region(pdev, 0); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | #ifdef CONFIG_PM |
| 251 | |
| 252 | static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
| 253 | { |
| 254 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 255 | struct ath_wiphy *aphy = hw->priv; |
| 256 | struct ath_softc *sc = aphy->sc; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 257 | |
Vivek Natarajan | 08fc5c1 | 2009-08-14 11:30:52 +0530 | [diff] [blame] | 258 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 259 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 260 | pci_save_state(pdev); |
| 261 | pci_disable_device(pdev); |
| 262 | pci_set_power_state(pdev, PCI_D3hot); |
| 263 | |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | static int ath_pci_resume(struct pci_dev *pdev) |
| 268 | { |
| 269 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 270 | struct ath_wiphy *aphy = hw->priv; |
| 271 | struct ath_softc *sc = aphy->sc; |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 272 | u32 val; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 273 | int err; |
| 274 | |
Sujith | 523c36f | 2009-08-13 09:34:35 +0530 | [diff] [blame] | 275 | pci_restore_state(pdev); |
| 276 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 277 | err = pci_enable_device(pdev); |
| 278 | if (err) |
| 279 | return err; |
Sujith | 523c36f | 2009-08-13 09:34:35 +0530 | [diff] [blame] | 280 | |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 281 | /* |
| 282 | * Suspend/Resume resets the PCI configuration space, so we have to |
| 283 | * re-disable the RETRY_TIMEOUT register (0x41) to keep |
| 284 | * PCI Tx retries from interfering with C3 CPU state |
| 285 | */ |
| 286 | pci_read_config_dword(pdev, 0x40, &val); |
| 287 | if ((val & 0x0000ff00) != 0) |
| 288 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 289 | |
| 290 | /* Enable LED */ |
Vivek Natarajan | 08fc5c1 | 2009-08-14 11:30:52 +0530 | [diff] [blame] | 291 | ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 292 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
Vivek Natarajan | 08fc5c1 | 2009-08-14 11:30:52 +0530 | [diff] [blame] | 293 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 294 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | #endif /* CONFIG_PM */ |
| 299 | |
| 300 | MODULE_DEVICE_TABLE(pci, ath_pci_id_table); |
| 301 | |
| 302 | static struct pci_driver ath_pci_driver = { |
| 303 | .name = "ath9k", |
| 304 | .id_table = ath_pci_id_table, |
| 305 | .probe = ath_pci_probe, |
| 306 | .remove = ath_pci_remove, |
| 307 | #ifdef CONFIG_PM |
| 308 | .suspend = ath_pci_suspend, |
| 309 | .resume = ath_pci_resume, |
| 310 | #endif /* CONFIG_PM */ |
| 311 | }; |
| 312 | |
Sujith | db0f41f | 2009-02-20 15:13:26 +0530 | [diff] [blame] | 313 | int ath_pci_init(void) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 314 | { |
| 315 | return pci_register_driver(&ath_pci_driver); |
| 316 | } |
| 317 | |
| 318 | void ath_pci_exit(void) |
| 319 | { |
| 320 | pci_unregister_driver(&ath_pci_driver); |
| 321 | } |