Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 1 | /* |
Sujith Manoharan | 5b68138 | 2011-05-17 13:36:18 +0530 | [diff] [blame] | 2 | * Copyright (c) 2008-2011 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 | |
Joe Perches | 516304b | 2012-03-18 17:30:52 -0700 | [diff] [blame] | 17 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 18 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 19 | #include <linux/nl80211.h> |
| 20 | #include <linux/pci.h> |
Stanislaw Gruszka | d493008 | 2011-07-29 15:59:08 +0200 | [diff] [blame] | 21 | #include <linux/pci-aspm.h> |
Felix Fietkau | a05b5d45 | 2010-11-17 04:25:33 +0100 | [diff] [blame] | 22 | #include <linux/ath9k_platform.h> |
Paul Gortmaker | 9d9779e | 2011-07-03 15:21:01 -0400 | [diff] [blame] | 23 | #include <linux/module.h> |
Sujith | 394cf0a | 2009-02-09 13:26:54 +0530 | [diff] [blame] | 24 | #include "ath9k.h" |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 25 | |
Alexey Dobriyan | a3aa188 | 2010-01-07 11:58:11 +0000 | [diff] [blame] | 26 | static DEFINE_PCI_DEVICE_TABLE(ath_pci_id_table) = { |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 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 */ |
| 32 | { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */ |
Luis R. Rodriguez | 5ffaf8a | 2010-02-02 11:58:33 -0500 | [diff] [blame] | 33 | { PCI_VDEVICE(ATHEROS, 0x002C) }, /* PCI-E 802.11n bonded out */ |
Vivek Natarajan | ac88b6e | 2009-07-23 10:59:57 +0530 | [diff] [blame] | 34 | { PCI_VDEVICE(ATHEROS, 0x002D) }, /* PCI */ |
| 35 | { PCI_VDEVICE(ATHEROS, 0x002E) }, /* PCI-E */ |
Luis R. Rodriguez | 0efabd5 | 2010-06-12 00:34:02 -0400 | [diff] [blame] | 36 | { PCI_VDEVICE(ATHEROS, 0x0030) }, /* PCI-E AR9300 */ |
Sujith Manoharan | 9b60b64 | 2013-06-13 22:51:26 +0530 | [diff] [blame] | 37 | |
| 38 | /* PCI-E CUS198 */ |
| 39 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 40 | 0x0032, |
| 41 | PCI_VENDOR_ID_AZWAVE, |
| 42 | 0x2086), |
| 43 | .driver_data = ATH9K_PCI_CUS198 }, |
| 44 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 45 | 0x0032, |
| 46 | PCI_VENDOR_ID_AZWAVE, |
| 47 | 0x1237), |
| 48 | .driver_data = ATH9K_PCI_CUS198 }, |
| 49 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 50 | 0x0032, |
| 51 | PCI_VENDOR_ID_AZWAVE, |
| 52 | 0x2126), |
| 53 | .driver_data = ATH9K_PCI_CUS198 }, |
Sujith Manoharan | e861ef5 | 2013-06-18 10:13:43 +0530 | [diff] [blame] | 54 | |
| 55 | /* PCI-E CUS230 */ |
Sujith Manoharan | 9b60b64 | 2013-06-13 22:51:26 +0530 | [diff] [blame] | 56 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 57 | 0x0032, |
| 58 | PCI_VENDOR_ID_AZWAVE, |
| 59 | 0x2152), |
Sujith Manoharan | e861ef5 | 2013-06-18 10:13:43 +0530 | [diff] [blame] | 60 | .driver_data = ATH9K_PCI_CUS230 }, |
Sujith Manoharan | 9b60b64 | 2013-06-13 22:51:26 +0530 | [diff] [blame] | 61 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 62 | 0x0032, |
| 63 | PCI_VENDOR_ID_FOXCONN, |
| 64 | 0xE075), |
Sujith Manoharan | e861ef5 | 2013-06-18 10:13:43 +0530 | [diff] [blame] | 65 | .driver_data = ATH9K_PCI_CUS230 }, |
Sujith Manoharan | 9b60b64 | 2013-06-13 22:51:26 +0530 | [diff] [blame] | 66 | |
Vasanthakumar Thiagarajan | 1435894 | 2010-12-06 04:28:00 -0800 | [diff] [blame] | 67 | { PCI_VDEVICE(ATHEROS, 0x0032) }, /* PCI-E AR9485 */ |
Luis R. Rodriguez | a508a6e | 2011-08-23 13:37:07 -0700 | [diff] [blame] | 68 | { PCI_VDEVICE(ATHEROS, 0x0033) }, /* PCI-E AR9580 */ |
Sujith Manoharan | 12eea64 | 2013-06-18 15:42:36 +0530 | [diff] [blame] | 69 | |
| 70 | /* PCI-E CUS217 */ |
| 71 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 72 | 0x0034, |
| 73 | PCI_VENDOR_ID_AZWAVE, |
| 74 | 0x2116), |
| 75 | .driver_data = ATH9K_PCI_CUS217 }, |
| 76 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 77 | 0x0034, |
| 78 | 0x11AD, /* LITEON */ |
| 79 | 0x6661), |
| 80 | .driver_data = ATH9K_PCI_CUS217 }, |
| 81 | |
Sujith Manoharan | fca3c21 | 2013-06-21 11:11:52 +0530 | [diff] [blame^] | 82 | /* AR9462 with WoW support */ |
| 83 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 84 | 0x0034, |
| 85 | PCI_VENDOR_ID_ATHEROS, |
| 86 | 0x3117), |
| 87 | .driver_data = ATH9K_PCI_WOW }, |
| 88 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 89 | 0x0034, |
| 90 | PCI_VENDOR_ID_LENOVO, |
| 91 | 0x3214), |
| 92 | .driver_data = ATH9K_PCI_WOW }, |
| 93 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 94 | 0x0034, |
| 95 | PCI_VENDOR_ID_ATTANSIC, |
| 96 | 0x0091), |
| 97 | .driver_data = ATH9K_PCI_WOW }, |
| 98 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 99 | 0x0034, |
| 100 | PCI_VENDOR_ID_AZWAVE, |
| 101 | 0x2110), |
| 102 | .driver_data = ATH9K_PCI_WOW }, |
| 103 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 104 | 0x0034, |
| 105 | PCI_VENDOR_ID_ASUSTEK, |
| 106 | 0x850E), |
| 107 | .driver_data = ATH9K_PCI_WOW }, |
| 108 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 109 | 0x0034, |
| 110 | 0x11AD, /* LITEON */ |
| 111 | 0x6631), |
| 112 | .driver_data = ATH9K_PCI_WOW }, |
| 113 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 114 | 0x0034, |
| 115 | 0x11AD, /* LITEON */ |
| 116 | 0x6641), |
| 117 | .driver_data = ATH9K_PCI_WOW }, |
| 118 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 119 | 0x0034, |
| 120 | PCI_VENDOR_ID_HP, |
| 121 | 0x1864), |
| 122 | .driver_data = ATH9K_PCI_WOW }, |
| 123 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 124 | 0x0034, |
| 125 | 0x14CD, /* USI */ |
| 126 | 0x0063), |
| 127 | .driver_data = ATH9K_PCI_WOW }, |
| 128 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 129 | 0x0034, |
| 130 | 0x14CD, /* USI */ |
| 131 | 0x0064), |
| 132 | .driver_data = ATH9K_PCI_WOW }, |
| 133 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS, |
| 134 | 0x0034, |
| 135 | 0x10CF, /* Fujitsu */ |
| 136 | 0x1783), |
| 137 | .driver_data = ATH9K_PCI_WOW }, |
| 138 | |
Rajkumar Manoharan | 423e38e | 2011-10-13 11:00:44 +0530 | [diff] [blame] | 139 | { PCI_VDEVICE(ATHEROS, 0x0034) }, /* PCI-E AR9462 */ |
Mohammed Shafi Shajakhan | d4e5979 | 2012-08-02 11:58:50 +0530 | [diff] [blame] | 140 | { PCI_VDEVICE(ATHEROS, 0x0037) }, /* PCI-E AR1111/AR9485 */ |
Sujith Manoharan | 0c8070f | 2012-09-10 09:20:39 +0530 | [diff] [blame] | 141 | { PCI_VDEVICE(ATHEROS, 0x0036) }, /* PCI-E AR9565 */ |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 142 | { 0 } |
| 143 | }; |
| 144 | |
Stanislaw Gruszka | 84c87dc | 2011-08-05 13:10:32 +0200 | [diff] [blame] | 145 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 146 | /* return bus cachesize in 4B word units */ |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 147 | static void ath_pci_read_cachesize(struct ath_common *common, int *csz) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 148 | { |
Luis R. Rodriguez | bc974f4 | 2009-09-28 02:54:40 -0400 | [diff] [blame] | 149 | struct ath_softc *sc = (struct ath_softc *) common->priv; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 150 | u8 u8tmp; |
| 151 | |
Vasanthakumar Thiagarajan | f020979 | 2009-09-07 17:46:50 +0530 | [diff] [blame] | 152 | 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] | 153 | *csz = (int)u8tmp; |
| 154 | |
| 155 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 156 | * This check was put in to avoid "unpleasant" consequences if |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 157 | * the bootrom has not fully initialized all PCI devices. |
| 158 | * Sometimes the cache line size register is not set |
| 159 | */ |
| 160 | |
| 161 | if (*csz == 0) |
| 162 | *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */ |
| 163 | } |
| 164 | |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 165 | 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] | 166 | { |
Felix Fietkau | a05b5d45 | 2010-11-17 04:25:33 +0100 | [diff] [blame] | 167 | struct ath_softc *sc = (struct ath_softc *) common->priv; |
| 168 | struct ath9k_platform_data *pdata = sc->dev->platform_data; |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 169 | |
Felix Fietkau | a05b5d45 | 2010-11-17 04:25:33 +0100 | [diff] [blame] | 170 | if (pdata) { |
| 171 | if (off >= (ARRAY_SIZE(pdata->eeprom_data))) { |
Joe Perches | 3800276 | 2010-12-02 19:12:36 -0800 | [diff] [blame] | 172 | ath_err(common, |
| 173 | "%s: eeprom read failed, offset %08x is out of range\n", |
| 174 | __func__, off); |
Felix Fietkau | a05b5d45 | 2010-11-17 04:25:33 +0100 | [diff] [blame] | 175 | } |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 176 | |
Felix Fietkau | a05b5d45 | 2010-11-17 04:25:33 +0100 | [diff] [blame] | 177 | *data = pdata->eeprom_data[off]; |
| 178 | } else { |
| 179 | struct ath_hw *ah = (struct ath_hw *) common->ah; |
| 180 | |
| 181 | common->ops->read(ah, AR5416_EEPROM_OFFSET + |
| 182 | (off << AR5416_EEPROM_S)); |
| 183 | |
| 184 | if (!ath9k_hw_wait(ah, |
| 185 | AR_EEPROM_STATUS_DATA, |
| 186 | AR_EEPROM_STATUS_DATA_BUSY | |
| 187 | AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, |
| 188 | AH_WAIT_TIMEOUT)) { |
| 189 | return false; |
| 190 | } |
| 191 | |
| 192 | *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA), |
| 193 | AR_EEPROM_STATUS_DATA_VAL); |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 194 | } |
| 195 | |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 196 | return true; |
| 197 | } |
| 198 | |
Stanislaw Gruszka | 69ce674 | 2011-08-05 13:10:34 +0200 | [diff] [blame] | 199 | /* Need to be called after we discover btcoex capabilities */ |
Stanislaw Gruszka | d493008 | 2011-07-29 15:59:08 +0200 | [diff] [blame] | 200 | static void ath_pci_aspm_init(struct ath_common *common) |
| 201 | { |
| 202 | struct ath_softc *sc = (struct ath_softc *) common->priv; |
| 203 | struct ath_hw *ah = sc->sc_ah; |
| 204 | struct pci_dev *pdev = to_pci_dev(sc->dev); |
| 205 | struct pci_dev *parent; |
Jiang Liu | 08bd108 | 2012-07-24 17:20:25 +0800 | [diff] [blame] | 206 | u16 aspm; |
Stanislaw Gruszka | d493008 | 2011-07-29 15:59:08 +0200 | [diff] [blame] | 207 | |
Sujith Manoharan | d09f5f4 | 2012-06-04 16:27:14 +0530 | [diff] [blame] | 208 | if (!ah->is_pciexpress) |
| 209 | return; |
| 210 | |
Stanislaw Gruszka | d493008 | 2011-07-29 15:59:08 +0200 | [diff] [blame] | 211 | parent = pdev->bus->self; |
John W. Linville | 22c55e6 | 2011-08-24 14:08:41 -0400 | [diff] [blame] | 212 | if (!parent) |
| 213 | return; |
Stanislaw Gruszka | 69ce674 | 2011-08-05 13:10:34 +0200 | [diff] [blame] | 214 | |
Sujith Manoharan | 046b680 | 2012-09-22 00:14:28 +0530 | [diff] [blame] | 215 | if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) && |
| 216 | (AR_SREV_9285(ah))) { |
Bjorn Helgaas | a875621 | 2012-12-05 13:51:19 -0700 | [diff] [blame] | 217 | /* Bluetooth coexistence requires disabling ASPM. */ |
Jiang Liu | 08bd108 | 2012-07-24 17:20:25 +0800 | [diff] [blame] | 218 | pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, |
Bjorn Helgaas | a875621 | 2012-12-05 13:51:19 -0700 | [diff] [blame] | 219 | PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1); |
Stanislaw Gruszka | 69ce674 | 2011-08-05 13:10:34 +0200 | [diff] [blame] | 220 | |
| 221 | /* |
| 222 | * Both upstream and downstream PCIe components should |
| 223 | * have the same ASPM settings. |
| 224 | */ |
Jiang Liu | 08bd108 | 2012-07-24 17:20:25 +0800 | [diff] [blame] | 225 | pcie_capability_clear_word(parent, PCI_EXP_LNKCTL, |
Bjorn Helgaas | a875621 | 2012-12-05 13:51:19 -0700 | [diff] [blame] | 226 | PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1); |
Stanislaw Gruszka | 69ce674 | 2011-08-05 13:10:34 +0200 | [diff] [blame] | 227 | |
Sujith Manoharan | d09f5f4 | 2012-06-04 16:27:14 +0530 | [diff] [blame] | 228 | ath_info(common, "Disabling ASPM since BTCOEX is enabled\n"); |
Stanislaw Gruszka | 69ce674 | 2011-08-05 13:10:34 +0200 | [diff] [blame] | 229 | return; |
| 230 | } |
| 231 | |
Jiang Liu | 08bd108 | 2012-07-24 17:20:25 +0800 | [diff] [blame] | 232 | pcie_capability_read_word(parent, PCI_EXP_LNKCTL, &aspm); |
Bjorn Helgaas | a875621 | 2012-12-05 13:51:19 -0700 | [diff] [blame] | 233 | if (aspm & (PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1)) { |
Stanislaw Gruszka | d493008 | 2011-07-29 15:59:08 +0200 | [diff] [blame] | 234 | ah->aspm_enabled = true; |
| 235 | /* Initialize PCIe PM and SERDES registers. */ |
Stanislaw Gruszka | 84c87dc | 2011-08-05 13:10:32 +0200 | [diff] [blame] | 236 | ath9k_hw_configpcipowersave(ah, false); |
Sujith Manoharan | d09f5f4 | 2012-06-04 16:27:14 +0530 | [diff] [blame] | 237 | ath_info(common, "ASPM enabled: 0x%x\n", aspm); |
Stanislaw Gruszka | d493008 | 2011-07-29 15:59:08 +0200 | [diff] [blame] | 238 | } |
| 239 | } |
| 240 | |
Tobias Klauser | 83bd11a | 2009-12-23 14:04:43 +0100 | [diff] [blame] | 241 | static const struct ath_bus_ops ath_pci_bus_ops = { |
Sujith | 497ad9a | 2010-04-01 10:28:20 +0530 | [diff] [blame] | 242 | .ath_bus_type = ATH_PCI, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 243 | .read_cachesize = ath_pci_read_cachesize, |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 244 | .eeprom_read = ath_pci_eeprom_read, |
Stanislaw Gruszka | d493008 | 2011-07-29 15:59:08 +0200 | [diff] [blame] | 245 | .aspm_init = ath_pci_aspm_init, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 246 | }; |
| 247 | |
| 248 | static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| 249 | { |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 250 | struct ath_softc *sc; |
| 251 | struct ieee80211_hw *hw; |
| 252 | u8 csz; |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 253 | u32 val; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 254 | int ret = 0; |
Luis R. Rodriguez | f934c4d | 2009-10-27 12:59:34 -0400 | [diff] [blame] | 255 | char hw_name[64]; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 256 | |
Felix Fietkau | b81950b1 | 2012-12-12 13:14:22 +0100 | [diff] [blame] | 257 | if (pcim_enable_device(pdev)) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 258 | return -EIO; |
| 259 | |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 260 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 261 | if (ret) { |
Joe Perches | 516304b | 2012-03-18 17:30:52 -0700 | [diff] [blame] | 262 | pr_err("32-bit DMA not available\n"); |
Felix Fietkau | b81950b1 | 2012-12-12 13:14:22 +0100 | [diff] [blame] | 263 | return ret; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 264 | } |
| 265 | |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 266 | ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 267 | if (ret) { |
Joe Perches | 516304b | 2012-03-18 17:30:52 -0700 | [diff] [blame] | 268 | pr_err("32-bit DMA consistent DMA enable failed\n"); |
Felix Fietkau | b81950b1 | 2012-12-12 13:14:22 +0100 | [diff] [blame] | 269 | return ret; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Cache line size is used to size and align various |
| 274 | * structures used to communicate with the hardware. |
| 275 | */ |
| 276 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz); |
| 277 | if (csz == 0) { |
| 278 | /* |
| 279 | * Linux 2.4.18 (at least) writes the cache line size |
| 280 | * register as a 16-bit wide register which is wrong. |
| 281 | * We must have this setup properly for rx buffer |
| 282 | * DMA to work so force a reasonable value here if it |
| 283 | * comes up zero. |
| 284 | */ |
| 285 | csz = L1_CACHE_BYTES / sizeof(u32); |
| 286 | pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz); |
| 287 | } |
| 288 | /* |
| 289 | * The default setting of latency timer yields poor results, |
| 290 | * set it to the value used by other systems. It may be worth |
| 291 | * tweaking this setting more. |
| 292 | */ |
| 293 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8); |
| 294 | |
| 295 | pci_set_master(pdev); |
| 296 | |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 297 | /* |
| 298 | * Disable the RETRY_TIMEOUT register (0x41) to keep |
| 299 | * PCI Tx retries from interfering with C3 CPU state. |
| 300 | */ |
| 301 | pci_read_config_dword(pdev, 0x40, &val); |
| 302 | if ((val & 0x0000ff00) != 0) |
| 303 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); |
| 304 | |
Felix Fietkau | b81950b1 | 2012-12-12 13:14:22 +0100 | [diff] [blame] | 305 | ret = pcim_iomap_regions(pdev, BIT(0), "ath9k"); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 306 | if (ret) { |
| 307 | dev_err(&pdev->dev, "PCI memory region reserve error\n"); |
Felix Fietkau | b81950b1 | 2012-12-12 13:14:22 +0100 | [diff] [blame] | 308 | return -ENODEV; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 309 | } |
| 310 | |
Felix Fietkau | 9ac5861 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 311 | hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops); |
Luis R. Rodriguez | db6be53 | 2009-09-02 16:34:57 -0700 | [diff] [blame] | 312 | if (!hw) { |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 313 | dev_err(&pdev->dev, "No memory for ieee80211_hw\n"); |
Felix Fietkau | b81950b1 | 2012-12-12 13:14:22 +0100 | [diff] [blame] | 314 | return -ENOMEM; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 315 | } |
| 316 | |
| 317 | SET_IEEE80211_DEV(hw, &pdev->dev); |
| 318 | pci_set_drvdata(pdev, hw); |
| 319 | |
Felix Fietkau | 9ac5861 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 320 | sc = hw->priv; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 321 | sc->hw = hw; |
| 322 | sc->dev = &pdev->dev; |
Felix Fietkau | b81950b1 | 2012-12-12 13:14:22 +0100 | [diff] [blame] | 323 | sc->mem = pcim_iomap_table(pdev)[0]; |
Sujith Manoharan | 9b60b64 | 2013-06-13 22:51:26 +0530 | [diff] [blame] | 324 | sc->driver_data = id->driver_data; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 325 | |
Sujith | 5e4ea1f | 2010-01-14 10:20:57 +0530 | [diff] [blame] | 326 | /* Will be cleared in ath9k_start() */ |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 327 | set_bit(SC_OP_INVALID, &sc->sc_flags); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 328 | |
Luis R. Rodriguez | fc548af | 2009-09-02 17:06:21 -0700 | [diff] [blame] | 329 | ret = request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc); |
Luis R. Rodriguez | 580171f | 2009-09-02 17:02:18 -0700 | [diff] [blame] | 330 | if (ret) { |
| 331 | dev_err(&pdev->dev, "request_irq failed\n"); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 332 | goto err_irq; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | sc->irq = pdev->irq; |
| 336 | |
Pavel Roskin | eb93e89 | 2011-07-23 03:55:39 -0400 | [diff] [blame] | 337 | ret = ath9k_init_device(id->device, sc, &ath_pci_bus_ops); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 338 | if (ret) { |
| 339 | dev_err(&pdev->dev, "Failed to initialize device\n"); |
| 340 | goto err_init; |
| 341 | } |
| 342 | |
| 343 | ath9k_hw_name(sc->sc_ah, hw_name, sizeof(hw_name)); |
Joe Perches | c96c31e | 2010-07-26 14:39:58 -0700 | [diff] [blame] | 344 | wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n", |
Felix Fietkau | b81950b1 | 2012-12-12 13:14:22 +0100 | [diff] [blame] | 345 | hw_name, (unsigned long)sc->mem, pdev->irq); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 346 | |
| 347 | return 0; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 348 | |
| 349 | err_init: |
| 350 | free_irq(sc->irq, sc); |
| 351 | err_irq: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 352 | ieee80211_free_hw(hw); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 353 | return ret; |
| 354 | } |
| 355 | |
| 356 | static void ath_pci_remove(struct pci_dev *pdev) |
| 357 | { |
| 358 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
Felix Fietkau | 9ac5861 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 359 | struct ath_softc *sc = hw->priv; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 360 | |
Rajkumar Manoharan | d584747 | 2010-12-20 14:39:51 +0530 | [diff] [blame] | 361 | if (!is_ath9k_unloaded) |
| 362 | sc->sc_ah->ah_flags |= AH_UNPLUGGED; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame] | 363 | ath9k_deinit_device(sc); |
| 364 | free_irq(sc->irq, sc); |
| 365 | ieee80211_free_hw(sc->hw); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 366 | } |
| 367 | |
Hauke Mehrtens | 8842758 | 2012-11-29 23:27:15 +0100 | [diff] [blame] | 368 | #ifdef CONFIG_PM_SLEEP |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 369 | |
Rafael J. Wysocki | f0e94b4 | 2010-10-16 00:36:17 +0200 | [diff] [blame] | 370 | static int ath_pci_suspend(struct device *device) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 371 | { |
Rafael J. Wysocki | f0e94b4 | 2010-10-16 00:36:17 +0200 | [diff] [blame] | 372 | struct pci_dev *pdev = to_pci_dev(device); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 373 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
Felix Fietkau | 9ac5861 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 374 | struct ath_softc *sc = hw->priv; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 375 | |
Mohammed Shafi Shajakhan | 4a17a50 | 2012-07-10 14:57:11 +0530 | [diff] [blame] | 376 | if (sc->wow_enabled) |
| 377 | return 0; |
| 378 | |
Rajkumar Manoharan | c31eb8e | 2011-06-28 18:21:19 +0530 | [diff] [blame] | 379 | /* The device has to be moved to FULLSLEEP forcibly. |
| 380 | * Otherwise the chip never moved to full sleep, |
| 381 | * when no interface is up. |
| 382 | */ |
Rajkumar Manoharan | e19f15a | 2012-08-09 12:37:26 +0530 | [diff] [blame] | 383 | ath9k_stop_btcoex(sc); |
Felix Fietkau | c0c1174 | 2011-11-16 13:08:41 +0100 | [diff] [blame] | 384 | ath9k_hw_disable(sc->sc_ah); |
Rajkumar Manoharan | c31eb8e | 2011-06-28 18:21:19 +0530 | [diff] [blame] | 385 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP); |
| 386 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 387 | return 0; |
| 388 | } |
| 389 | |
Rafael J. Wysocki | f0e94b4 | 2010-10-16 00:36:17 +0200 | [diff] [blame] | 390 | static int ath_pci_resume(struct device *device) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 391 | { |
Rafael J. Wysocki | f0e94b4 | 2010-10-16 00:36:17 +0200 | [diff] [blame] | 392 | struct pci_dev *pdev = to_pci_dev(device); |
Felix Fietkau | 9317051 | 2012-10-03 21:07:50 +0200 | [diff] [blame] | 393 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
| 394 | struct ath_softc *sc = hw->priv; |
Felix Fietkau | ceb26a6 | 2012-10-03 21:07:51 +0200 | [diff] [blame] | 395 | struct ath_hw *ah = sc->sc_ah; |
| 396 | struct ath_common *common = ath9k_hw_common(ah); |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 397 | u32 val; |
Sujith | 523c36f | 2009-08-13 09:34:35 +0530 | [diff] [blame] | 398 | |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 399 | /* |
| 400 | * Suspend/Resume resets the PCI configuration space, so we have to |
| 401 | * re-disable the RETRY_TIMEOUT register (0x41) to keep |
| 402 | * PCI Tx retries from interfering with C3 CPU state |
| 403 | */ |
| 404 | pci_read_config_dword(pdev, 0x40, &val); |
| 405 | if ((val & 0x0000ff00) != 0) |
| 406 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 407 | |
Felix Fietkau | 9317051 | 2012-10-03 21:07:50 +0200 | [diff] [blame] | 408 | ath_pci_aspm_init(common); |
Felix Fietkau | ceb26a6 | 2012-10-03 21:07:51 +0200 | [diff] [blame] | 409 | ah->reset_power_on = false; |
Felix Fietkau | 9317051 | 2012-10-03 21:07:50 +0200 | [diff] [blame] | 410 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 411 | return 0; |
| 412 | } |
| 413 | |
Hauke Mehrtens | 8842758 | 2012-11-29 23:27:15 +0100 | [diff] [blame] | 414 | static SIMPLE_DEV_PM_OPS(ath9k_pm_ops, ath_pci_suspend, ath_pci_resume); |
Rafael J. Wysocki | f0e94b4 | 2010-10-16 00:36:17 +0200 | [diff] [blame] | 415 | |
| 416 | #define ATH9K_PM_OPS (&ath9k_pm_ops) |
| 417 | |
Hauke Mehrtens | 8842758 | 2012-11-29 23:27:15 +0100 | [diff] [blame] | 418 | #else /* !CONFIG_PM_SLEEP */ |
Rafael J. Wysocki | f0e94b4 | 2010-10-16 00:36:17 +0200 | [diff] [blame] | 419 | |
| 420 | #define ATH9K_PM_OPS NULL |
| 421 | |
Hauke Mehrtens | 8842758 | 2012-11-29 23:27:15 +0100 | [diff] [blame] | 422 | #endif /* !CONFIG_PM_SLEEP */ |
Rafael J. Wysocki | f0e94b4 | 2010-10-16 00:36:17 +0200 | [diff] [blame] | 423 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 424 | |
| 425 | MODULE_DEVICE_TABLE(pci, ath_pci_id_table); |
| 426 | |
| 427 | static struct pci_driver ath_pci_driver = { |
| 428 | .name = "ath9k", |
| 429 | .id_table = ath_pci_id_table, |
| 430 | .probe = ath_pci_probe, |
| 431 | .remove = ath_pci_remove, |
Rafael J. Wysocki | f0e94b4 | 2010-10-16 00:36:17 +0200 | [diff] [blame] | 432 | .driver.pm = ATH9K_PM_OPS, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 433 | }; |
| 434 | |
Sujith | db0f41f | 2009-02-20 15:13:26 +0530 | [diff] [blame] | 435 | int ath_pci_init(void) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 436 | { |
| 437 | return pci_register_driver(&ath_pci_driver); |
| 438 | } |
| 439 | |
| 440 | void ath_pci_exit(void) |
| 441 | { |
| 442 | pci_unregister_driver(&ath_pci_driver); |
| 443 | } |