drivers/net/wireless/iwlwifi/iwl-pci.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
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  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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  20  * along with this program; if not, write to the Free Software
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  26  *
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  28  *  Intel Linux Wireless <ilw@linux.intel.com>
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  30  *
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  41  *    notice, this list of conditions and the following disclaimer.
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  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
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  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/pci.h>
  64 #include <linux/pci-aspm.h>
  65
  66 #include "iwl-bus.h"
  67 #include "iwl-agn.h"
  68 #include "iwl-core.h"
  69 #include "iwl-io.h"
  70
  71 /* PCI registers */
  72 #define PCI_CFG_RETRY_TIMEOUT   0x041
  73 #define PCI_CFG_LINK_CTRL_VAL_L0S_EN    0x01
  74 #define PCI_CFG_LINK_CTRL_VAL_L1_EN     0x02
  75
  76 struct iwl_pci_bus {
  77         /* basic pci-network driver stuff */
  78         struct pci_dev *pci_dev;
  79
  80         /* pci hardware address support */
  81         void __iomem *hw_base;
  82 };
  83
  84 #define IWL_BUS_GET_PCI_BUS(_iwl_bus) \
  85                         ((struct iwl_pci_bus *) ((_iwl_bus)->bus_specific))
  86
  87 #define IWL_BUS_GET_PCI_DEV(_iwl_bus) \
  88                         ((IWL_BUS_GET_PCI_BUS(_iwl_bus))->pci_dev)
  89
  90 static u16 iwl_pciexp_link_ctrl(struct iwl_bus *bus)
  91 {
  92         int pos;
  93         u16 pci_lnk_ctl;
  94         struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);
  95
  96         pos = pci_pcie_cap(pci_dev);
  97         pci_read_config_word(pci_dev, pos + PCI_EXP_LNKCTL, &pci_lnk_ctl);
  98         return pci_lnk_ctl;
  99 }
 100
 101 static bool iwl_pci_is_pm_supported(struct iwl_bus *bus)
 102 {
 103         u16 lctl = iwl_pciexp_link_ctrl(bus);
 104
 105         return !(lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN);
 106 }
 107
 108 static void iwl_pci_apm_config(struct iwl_bus *bus)
 109 {
 110         /*
 111          * HW bug W/A for instability in PCIe bus L0S->L1 transition.
 112          * Check if BIOS (or OS) enabled L1-ASPM on this device.
 113          * If so (likely), disable L0S, so device moves directly L0->L1;
 114          *    costs negligible amount of power savings.
 115          * If not (unlikely), enable L0S, so there is at least some
 116          *    power savings, even without L1.
 117          */
 118         u16 lctl = iwl_pciexp_link_ctrl(bus);
 119
 120         if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
 121                                 PCI_CFG_LINK_CTRL_VAL_L1_EN) {
 122                 /* L1-ASPM enabled; disable(!) L0S */
 123                 iwl_set_bit(bus->drv_data, CSR_GIO_REG,
 124                                 CSR_GIO_REG_VAL_L0S_ENABLED);
 125                 dev_printk(KERN_INFO, bus->dev, "L1 Enabled; Disabling L0S\n");
 126         } else {
 127                 /* L1-ASPM disabled; enable(!) L0S */
 128                 iwl_clear_bit(bus->drv_data, CSR_GIO_REG,
 129                                 CSR_GIO_REG_VAL_L0S_ENABLED);
 130                 dev_printk(KERN_INFO, bus->dev, "L1 Disabled; Enabling L0S\n");
 131         }
 132 }
 133
 134 static void iwl_pci_set_drv_data(struct iwl_bus *bus, void *drv_data)
 135 {
 136         bus->drv_data = drv_data;
 137 }
 138
 139 static void iwl_pci_get_hw_id(struct iwl_bus *bus, char buf[],
 140                               int buf_len)
 141 {
 142         struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);
 143
 144         snprintf(buf, buf_len, "PCI ID: 0x%04X:0x%04X", pci_dev->device,
 145                  pci_dev->subsystem_device);
 146 }
 147
 148 static void iwl_pci_write8(struct iwl_bus *bus, u32 ofs, u8 val)
 149 {
 150         iowrite8(val, IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs);
 151 }
 152
 153 static void iwl_pci_write32(struct iwl_bus *bus, u32 ofs, u32 val)
 154 {
 155         iowrite32(val, IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs);
 156 }
 157
 158 static u32 iwl_pci_read32(struct iwl_bus *bus, u32 ofs)
 159 {
 160         u32 val = ioread32(IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs);
 161         return val;
 162 }
 163
 164 static struct iwl_bus_ops pci_ops = {
 165         .get_pm_support = iwl_pci_is_pm_supported,
 166         .apm_config = iwl_pci_apm_config,
 167         .set_drv_data = iwl_pci_set_drv_data,
 168         .get_hw_id = iwl_pci_get_hw_id,
 169         .write8 = iwl_pci_write8,
 170         .write32 = iwl_pci_write32,
 171         .read32 = iwl_pci_read32,
 172 };
 173
 174 #define IWL_PCI_DEVICE(dev, subdev, cfg) \
 175         .vendor = PCI_VENDOR_ID_INTEL,  .device = (dev), \
 176         .subvendor = PCI_ANY_ID, .subdevice = (subdev), \
 177         .driver_data = (kernel_ulong_t)&(cfg)
 178
 179 /* Hardware specific file defines the PCI IDs table for that hardware module */
 180 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
 181         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
 182         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
 183         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
 184         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
 185         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
 186         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
 187         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
 188         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
 189         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
 190         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
 191         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
 192         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
 193         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
 194         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
 195         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
 196         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
 197         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
 198         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
 199         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
 200         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
 201         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
 202         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
 203         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
 204         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
 205
 206 /* 5300 Series WiFi */
 207         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
 208         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
 209         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
 210         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
 211         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
 212         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
 213         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
 214         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
 215         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
 216         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
 217         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
 218         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
 219
 220 /* 5350 Series WiFi/WiMax */
 221         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
 222         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
 223         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
 224
 225 /* 5150 Series Wifi/WiMax */
 226         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
 227         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
 228         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
 229         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
 230         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
 231         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
 232
 233         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
 234         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
 235         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
 236         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
 237
 238 /* 6x00 Series */
 239         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
 240         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
 241         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
 242         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
 243         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
 244         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
 245         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
 246         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
 247         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
 248         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
 249
 250 /* 6x05 Series */
 251         {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6005_2agn_cfg)},
 252         {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6005_2abg_cfg)},
 253         {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6005_2bg_cfg)},
 254         {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6005_2agn_cfg)},
 255         {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6005_2abg_cfg)},
 256         {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6005_2agn_cfg)},
 257         {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6005_2abg_cfg)},
 258
 259 /* 6x30 Series */
 260         {IWL_PCI_DEVICE(0x008A, 0x5305, iwl1030_bgn_cfg)},
 261         {IWL_PCI_DEVICE(0x008A, 0x5307, iwl1030_bg_cfg)},
 262         {IWL_PCI_DEVICE(0x008A, 0x5325, iwl1030_bgn_cfg)},
 263         {IWL_PCI_DEVICE(0x008A, 0x5327, iwl1030_bg_cfg)},
 264         {IWL_PCI_DEVICE(0x008B, 0x5315, iwl1030_bgn_cfg)},
 265         {IWL_PCI_DEVICE(0x008B, 0x5317, iwl1030_bg_cfg)},
 266         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6030_2agn_cfg)},
 267         {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6030_2bgn_cfg)},
 268         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6030_2abg_cfg)},
 269         {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6030_2agn_cfg)},
 270         {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6030_2bgn_cfg)},
 271         {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6030_2abg_cfg)},
 272         {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6030_2bg_cfg)},
 273         {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6030_2agn_cfg)},
 274         {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6030_2bgn_cfg)},
 275         {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6030_2abg_cfg)},
 276
 277 /* 6x50 WiFi/WiMax Series */
 278         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
 279         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
 280         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
 281         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
 282         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
 283         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
 284
 285 /* 6150 WiFi/WiMax Series */
 286         {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6150_bgn_cfg)},
 287         {IWL_PCI_DEVICE(0x0885, 0x1307, iwl6150_bg_cfg)},
 288         {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6150_bgn_cfg)},
 289         {IWL_PCI_DEVICE(0x0885, 0x1327, iwl6150_bg_cfg)},
 290         {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6150_bgn_cfg)},
 291         {IWL_PCI_DEVICE(0x0886, 0x1317, iwl6150_bg_cfg)},
 292
 293 /* 1000 Series WiFi */
 294         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
 295         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
 296         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
 297         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
 298         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
 299         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
 300         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
 301         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
 302         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
 303         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
 304         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
 305         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
 306
 307 /* 100 Series WiFi */
 308         {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
 309         {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
 310         {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
 311         {IWL_PCI_DEVICE(0x08AF, 0x1017, iwl100_bg_cfg)},
 312         {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
 313         {IWL_PCI_DEVICE(0x08AE, 0x1027, iwl100_bg_cfg)},
 314
 315 /* 130 Series WiFi */
 316         {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
 317         {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
 318         {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
 319         {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
 320         {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
 321         {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
 322
 323 /* 2x00 Series */
 324         {IWL_PCI_DEVICE(0x0890, 0x4022, iwl2000_2bgn_cfg)},
 325         {IWL_PCI_DEVICE(0x0891, 0x4222, iwl2000_2bgn_cfg)},
 326         {IWL_PCI_DEVICE(0x0890, 0x4422, iwl2000_2bgn_cfg)},
 327         {IWL_PCI_DEVICE(0x0890, 0x4026, iwl2000_2bg_cfg)},
 328         {IWL_PCI_DEVICE(0x0891, 0x4226, iwl2000_2bg_cfg)},
 329         {IWL_PCI_DEVICE(0x0890, 0x4426, iwl2000_2bg_cfg)},
 330
 331 /* 2x30 Series */
 332         {IWL_PCI_DEVICE(0x0887, 0x4062, iwl2030_2bgn_cfg)},
 333         {IWL_PCI_DEVICE(0x0888, 0x4262, iwl2030_2bgn_cfg)},
 334         {IWL_PCI_DEVICE(0x0887, 0x4462, iwl2030_2bgn_cfg)},
 335         {IWL_PCI_DEVICE(0x0887, 0x4066, iwl2030_2bg_cfg)},
 336         {IWL_PCI_DEVICE(0x0888, 0x4266, iwl2030_2bg_cfg)},
 337         {IWL_PCI_DEVICE(0x0887, 0x4466, iwl2030_2bg_cfg)},
 338
 339 /* 6x35 Series */
 340         {IWL_PCI_DEVICE(0x088E, 0x4060, iwl6035_2agn_cfg)},
 341         {IWL_PCI_DEVICE(0x088F, 0x4260, iwl6035_2agn_cfg)},
 342         {IWL_PCI_DEVICE(0x088E, 0x4460, iwl6035_2agn_cfg)},
 343         {IWL_PCI_DEVICE(0x088E, 0x4064, iwl6035_2abg_cfg)},
 344         {IWL_PCI_DEVICE(0x088F, 0x4264, iwl6035_2abg_cfg)},
 345         {IWL_PCI_DEVICE(0x088E, 0x4464, iwl6035_2abg_cfg)},
 346         {IWL_PCI_DEVICE(0x088E, 0x4066, iwl6035_2bg_cfg)},
 347         {IWL_PCI_DEVICE(0x088F, 0x4266, iwl6035_2bg_cfg)},
 348         {IWL_PCI_DEVICE(0x088E, 0x4466, iwl6035_2bg_cfg)},
 349
 350 /* 105 Series */
 351         {IWL_PCI_DEVICE(0x0894, 0x0022, iwl105_bgn_cfg)},
 352         {IWL_PCI_DEVICE(0x0895, 0x0222, iwl105_bgn_cfg)},
 353         {IWL_PCI_DEVICE(0x0894, 0x0422, iwl105_bgn_cfg)},
 354         {IWL_PCI_DEVICE(0x0894, 0x0026, iwl105_bg_cfg)},
 355         {IWL_PCI_DEVICE(0x0895, 0x0226, iwl105_bg_cfg)},
 356         {IWL_PCI_DEVICE(0x0894, 0x0426, iwl105_bg_cfg)},
 357
 358 /* 135 Series */
 359         {IWL_PCI_DEVICE(0x0892, 0x0062, iwl135_bgn_cfg)},
 360         {IWL_PCI_DEVICE(0x0893, 0x0262, iwl135_bgn_cfg)},
 361         {IWL_PCI_DEVICE(0x0892, 0x0462, iwl135_bgn_cfg)},
 362         {IWL_PCI_DEVICE(0x0892, 0x0066, iwl135_bg_cfg)},
 363         {IWL_PCI_DEVICE(0x0893, 0x0266, iwl135_bg_cfg)},
 364         {IWL_PCI_DEVICE(0x0892, 0x0466, iwl135_bg_cfg)},
 365
 366         {0}
 367 };
 368 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
 369
 370 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 371 {
 372         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
 373         struct iwl_bus *bus;
 374         struct iwl_pci_bus *pci_bus;
 375         u16 pci_cmd;
 376         int err;
 377
 378         bus = kzalloc(sizeof(*bus) + sizeof(*pci_bus), GFP_KERNEL);
 379         if (!bus) {
 380                 dev_printk(KERN_ERR, &pdev->dev,
 381                            "Couldn't allocate iwl_pci_bus");
 382                 err = -ENOMEM;
 383                 goto out_no_pci;
 384         }
 385
 386         pci_bus = IWL_BUS_GET_PCI_BUS(bus);
 387         pci_bus->pci_dev = pdev;
 388
 389         /* W/A - seems to solve weird behavior. We need to remove this if we
 390          * don't want to stay in L1 all the time. This wastes a lot of power */
 391         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
 392                                 PCIE_LINK_STATE_CLKPM);
 393
 394         if (pci_enable_device(pdev)) {
 395                 err = -ENODEV;
 396                 goto out_no_pci;
 397         }
 398
 399         pci_set_master(pdev);
 400
 401         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
 402         if (!err)
 403                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
 404         if (err) {
 405                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 406                 if (!err)
 407                         err = pci_set_consistent_dma_mask(pdev,
 408                                                         DMA_BIT_MASK(32));
 409                 /* both attempts failed: */
 410                 if (err) {
 411                         dev_printk(KERN_ERR, bus->dev,
 412                                    "No suitable DMA available.\n");
 413                         goto out_pci_disable_device;
 414                 }
 415         }
 416
 417         err = pci_request_regions(pdev, DRV_NAME);
 418         if (err) {
 419                 dev_printk(KERN_ERR, bus->dev, "pci_request_regions failed");
 420                 goto out_pci_disable_device;
 421         }
 422
 423         pci_bus->hw_base = pci_iomap(pdev, 0, 0);
 424         if (!pci_bus->hw_base) {
 425                 dev_printk(KERN_ERR, bus->dev, "pci_iomap failed");
 426                 err = -ENODEV;
 427                 goto out_pci_release_regions;
 428         }
 429
 430         dev_printk(KERN_INFO, &pdev->dev,
 431                 "pci_resource_len = 0x%08llx\n",
 432                 (unsigned long long) pci_resource_len(pdev, 0));
 433         dev_printk(KERN_INFO, &pdev->dev,
 434                 "pci_resource_base = %p\n", pci_bus->hw_base);
 435
 436         dev_printk(KERN_INFO, &pdev->dev,
 437                 "HW Revision ID = 0x%X\n", pdev->revision);
 438
 439         /* We disable the RETRY_TIMEOUT register (0x41) to keep
 440          * PCI Tx retries from interfering with C3 CPU state */
 441         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
 442
 443         err = pci_enable_msi(pdev);
 444         if (err) {
 445                 dev_printk(KERN_ERR, &pdev->dev, "pci_enable_msi failed");
 446                 goto out_iounmap;
 447         }
 448
 449         /* TODO: Move this away, not needed if not MSI */
 450         /* enable rfkill interrupt: hw bug w/a */
 451         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
 452         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
 453                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
 454                 pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
 455         }
 456
 457         pci_set_drvdata(pdev, bus);
 458
 459         bus->dev = &pdev->dev;
 460         bus->irq = pdev->irq;
 461         bus->ops = &pci_ops;
 462
 463         err = iwl_probe(bus, cfg);
 464         if (err)
 465                 goto out_disable_msi;
 466         return 0;
 467
 468 out_disable_msi:
 469         pci_disable_msi(pdev);
 470 out_iounmap:
 471         pci_iounmap(pdev, pci_bus->hw_base);
 472 out_pci_release_regions:
 473         pci_set_drvdata(pdev, NULL);
 474         pci_release_regions(pdev);
 475 out_pci_disable_device:
 476         pci_disable_device(pdev);
 477 out_no_pci:
 478         kfree(bus);
 479         return err;
 480 }
 481
 482 static void iwl_pci_down(struct iwl_bus *bus)
 483 {
 484         struct iwl_pci_bus *pci_bus = (struct iwl_pci_bus *) bus->bus_specific;
 485
 486         pci_disable_msi(pci_bus->pci_dev);
 487         pci_iounmap(pci_bus->pci_dev, pci_bus->hw_base);
 488         pci_release_regions(pci_bus->pci_dev);
 489         pci_disable_device(pci_bus->pci_dev);
 490         pci_set_drvdata(pci_bus->pci_dev, NULL);
 491
 492         kfree(bus);
 493 }
 494
 495 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
 496 {
 497         struct iwl_bus *bus = pci_get_drvdata(pdev);
 498
 499         iwl_remove(bus->drv_data);
 500
 501         iwl_pci_down(bus);
 502 }
 503
 504 #ifdef CONFIG_PM
 505
 506 static int iwl_pci_suspend(struct device *device)
 507 {
 508         struct pci_dev *pdev = to_pci_dev(device);
 509         struct iwl_bus *bus = pci_get_drvdata(pdev);
 510
 511         /* Before you put code here, think about WoWLAN. You cannot check here
 512          * whether WoWLAN is enabled or not, and your code will run even if
 513          * WoWLAN is enabled - don't kill the NIC, someone may need it in Sx.
 514          */
 515
 516         return iwl_suspend(bus->drv_data);
 517 }
 518
 519 static int iwl_pci_resume(struct device *device)
 520 {
 521         struct pci_dev *pdev = to_pci_dev(device);
 522         struct iwl_bus *bus = pci_get_drvdata(pdev);
 523
 524         /* Before you put code here, think about WoWLAN. You cannot check here
 525          * whether WoWLAN is enabled or not, and your code will run even if
 526          * WoWLAN is enabled - the NIC may be alive.
 527          */
 528
 529         /*
 530          * We disable the RETRY_TIMEOUT register (0x41) to keep
 531          * PCI Tx retries from interfering with C3 CPU state.
 532          */
 533         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
 534
 535         return iwl_resume(bus->drv_data);
 536 }
 537
 538 static SIMPLE_DEV_PM_OPS(iwl_dev_pm_ops, iwl_pci_suspend, iwl_pci_resume);
 539
 540 #define IWL_PM_OPS      (&iwl_dev_pm_ops)
 541
 542 #else
 543
 544 #define IWL_PM_OPS      NULL
 545
 546 #endif
 547
 548 static struct pci_driver iwl_pci_driver = {
 549         .name = DRV_NAME,
 550         .id_table = iwl_hw_card_ids,
 551         .probe = iwl_pci_probe,
 552         .remove = __devexit_p(iwl_pci_remove),
 553         .driver.pm = IWL_PM_OPS,
 554 };
 555
 556 int __must_check iwl_pci_register_driver(void)
 557 {
 558         int ret;
 559         ret = pci_register_driver(&iwl_pci_driver);
 560         if (ret)
 561                 pr_err("Unable to initialize PCI module\n");
 562
 563         return ret;
 564 }
 565
 566 void iwl_pci_unregister_driver(void)
 567 {
 568         pci_unregister_driver(&iwl_pci_driver);
 569 }