drivers/net/wireless/iwlwifi/pcie/drv.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 - 2012 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
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called LICENSE.GPL.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  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,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  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
  64 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  65
  66 #include <linux/module.h>
  67 #include <linux/pci.h>
  68 #include <linux/pci-aspm.h>
  69
  70 #include "iwl-trans.h"
  71 #include "iwl-drv.h"
  72 #include "iwl-trans.h"
  73
  74 #include "cfg.h"
  75 #include "internal.h"
  76
  77 #define IWL_PCI_DEVICE(dev, subdev, cfg) \
  78         .vendor = PCI_VENDOR_ID_INTEL,  .device = (dev), \
  79         .subvendor = PCI_ANY_ID, .subdevice = (subdev), \
  80         .driver_data = (kernel_ulong_t)&(cfg)
  81
  82 /* Hardware specific file defines the PCI IDs table for that hardware module */
  83 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
  84         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
  85         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
  86         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
  87         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
  88         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
  89         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
  90         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
  91         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
  92         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
  93         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
  94         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
  95         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
  96         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
  97         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
  98         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
  99         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
 100         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
 101         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
 102         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
 103         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
 104         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
 105         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
 106         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
 107         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
 108
 109 /* 5300 Series WiFi */
 110         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
 111         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
 112         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
 113         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
 114         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
 115         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
 116         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
 117         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
 118         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
 119         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
 120         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
 121         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
 122
 123 /* 5350 Series WiFi/WiMax */
 124         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
 125         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
 126         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
 127
 128 /* 5150 Series Wifi/WiMax */
 129         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
 130         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
 131         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
 132         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
 133         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
 134         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
 135
 136         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
 137         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
 138         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
 139         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
 140
 141 /* 6x00 Series */
 142         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
 143         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
 144         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
 145         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
 146         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
 147         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
 148         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
 149         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
 150         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
 151         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
 152
 153 /* 6x05 Series */
 154         {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6005_2agn_cfg)},
 155         {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6005_2abg_cfg)},
 156         {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6005_2bg_cfg)},
 157         {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6005_2agn_cfg)},
 158         {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6005_2abg_cfg)},
 159         {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6005_2agn_cfg)},
 160         {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6005_2abg_cfg)},
 161         {IWL_PCI_DEVICE(0x0082, 0xC020, iwl6005_2agn_sff_cfg)},
 162         {IWL_PCI_DEVICE(0x0085, 0xC220, iwl6005_2agn_sff_cfg)},
 163         {IWL_PCI_DEVICE(0x0082, 0x4820, iwl6005_2agn_d_cfg)},
 164         {IWL_PCI_DEVICE(0x0082, 0x1304, iwl6005_2agn_mow1_cfg)},/* low 5GHz active */
 165         {IWL_PCI_DEVICE(0x0082, 0x1305, iwl6005_2agn_mow2_cfg)},/* high 5GHz active */
 166
 167 /* 6x30 Series */
 168         {IWL_PCI_DEVICE(0x008A, 0x5305, iwl1030_bgn_cfg)},
 169         {IWL_PCI_DEVICE(0x008A, 0x5307, iwl1030_bg_cfg)},
 170         {IWL_PCI_DEVICE(0x008A, 0x5325, iwl1030_bgn_cfg)},
 171         {IWL_PCI_DEVICE(0x008A, 0x5327, iwl1030_bg_cfg)},
 172         {IWL_PCI_DEVICE(0x008B, 0x5315, iwl1030_bgn_cfg)},
 173         {IWL_PCI_DEVICE(0x008B, 0x5317, iwl1030_bg_cfg)},
 174         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6030_2agn_cfg)},
 175         {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6030_2bgn_cfg)},
 176         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6030_2abg_cfg)},
 177         {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6030_2agn_cfg)},
 178         {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6030_2bgn_cfg)},
 179         {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6030_2abg_cfg)},
 180         {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6030_2bg_cfg)},
 181         {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6030_2agn_cfg)},
 182         {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6030_2bgn_cfg)},
 183         {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6030_2abg_cfg)},
 184
 185 /* 6x50 WiFi/WiMax Series */
 186         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
 187         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
 188         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
 189         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
 190         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
 191         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
 192
 193 /* 6150 WiFi/WiMax Series */
 194         {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6150_bgn_cfg)},
 195         {IWL_PCI_DEVICE(0x0885, 0x1307, iwl6150_bg_cfg)},
 196         {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6150_bgn_cfg)},
 197         {IWL_PCI_DEVICE(0x0885, 0x1327, iwl6150_bg_cfg)},
 198         {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6150_bgn_cfg)},
 199         {IWL_PCI_DEVICE(0x0886, 0x1317, iwl6150_bg_cfg)},
 200
 201 /* 1000 Series WiFi */
 202         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
 203         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
 204         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
 205         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
 206         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
 207         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
 208         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
 209         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
 210         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
 211         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
 212         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
 213         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
 214
 215 /* 100 Series WiFi */
 216         {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
 217         {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
 218         {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
 219         {IWL_PCI_DEVICE(0x08AF, 0x1017, iwl100_bg_cfg)},
 220         {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
 221         {IWL_PCI_DEVICE(0x08AE, 0x1027, iwl100_bg_cfg)},
 222
 223 /* 130 Series WiFi */
 224         {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
 225         {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
 226         {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
 227         {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
 228         {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
 229         {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
 230
 231 /* 2x00 Series */
 232         {IWL_PCI_DEVICE(0x0890, 0x4022, iwl2000_2bgn_cfg)},
 233         {IWL_PCI_DEVICE(0x0891, 0x4222, iwl2000_2bgn_cfg)},
 234         {IWL_PCI_DEVICE(0x0890, 0x4422, iwl2000_2bgn_cfg)},
 235         {IWL_PCI_DEVICE(0x0890, 0x4822, iwl2000_2bgn_d_cfg)},
 236
 237 /* 2x30 Series */
 238         {IWL_PCI_DEVICE(0x0887, 0x4062, iwl2030_2bgn_cfg)},
 239         {IWL_PCI_DEVICE(0x0888, 0x4262, iwl2030_2bgn_cfg)},
 240         {IWL_PCI_DEVICE(0x0887, 0x4462, iwl2030_2bgn_cfg)},
 241
 242 /* 6x35 Series */
 243         {IWL_PCI_DEVICE(0x088E, 0x4060, iwl6035_2agn_cfg)},
 244         {IWL_PCI_DEVICE(0x088F, 0x4260, iwl6035_2agn_cfg)},
 245         {IWL_PCI_DEVICE(0x088E, 0x4460, iwl6035_2agn_cfg)},
 246         {IWL_PCI_DEVICE(0x088E, 0x4860, iwl6035_2agn_cfg)},
 247
 248 /* 105 Series */
 249         {IWL_PCI_DEVICE(0x0894, 0x0022, iwl105_bgn_cfg)},
 250         {IWL_PCI_DEVICE(0x0895, 0x0222, iwl105_bgn_cfg)},
 251         {IWL_PCI_DEVICE(0x0894, 0x0422, iwl105_bgn_cfg)},
 252         {IWL_PCI_DEVICE(0x0894, 0x0822, iwl105_bgn_d_cfg)},
 253
 254 /* 135 Series */
 255         {IWL_PCI_DEVICE(0x0892, 0x0062, iwl135_bgn_cfg)},
 256         {IWL_PCI_DEVICE(0x0893, 0x0262, iwl135_bgn_cfg)},
 257         {IWL_PCI_DEVICE(0x0892, 0x0462, iwl135_bgn_cfg)},
 258
 259         {0}
 260 };
 261 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
 262
 263 /* PCI registers */
 264 #define PCI_CFG_RETRY_TIMEOUT   0x041
 265
 266 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 267 {
 268         const struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
 269         struct iwl_trans *iwl_trans;
 270         struct iwl_trans_pcie *trans_pcie;
 271
 272         iwl_trans = iwl_trans_pcie_alloc(pdev, ent, cfg);
 273         if (iwl_trans == NULL)
 274                 return -ENOMEM;
 275
 276         pci_set_drvdata(pdev, iwl_trans);
 277
 278         trans_pcie = IWL_TRANS_GET_PCIE_TRANS(iwl_trans);
 279         trans_pcie->drv = iwl_drv_start(iwl_trans, cfg);
 280         if (!trans_pcie->drv)
 281                 goto out_free_trans;
 282
 283         /* register transport layer debugfs here */
 284         if (iwl_trans_dbgfs_register(iwl_trans, iwl_trans->dbgfs_dir))
 285                 goto out_free_drv;
 286
 287         return 0;
 288
 289 out_free_drv:
 290         iwl_drv_stop(trans_pcie->drv);
 291 out_free_trans:
 292         iwl_trans_pcie_free(iwl_trans);
 293         pci_set_drvdata(pdev, NULL);
 294         return -EFAULT;
 295 }
 296
 297 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
 298 {
 299         struct iwl_trans *trans = pci_get_drvdata(pdev);
 300         struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 301
 302         iwl_drv_stop(trans_pcie->drv);
 303         iwl_trans_pcie_free(trans);
 304
 305         pci_set_drvdata(pdev, NULL);
 306 }
 307
 308 #ifdef CONFIG_PM_SLEEP
 309
 310 static int iwl_pci_suspend(struct device *device)
 311 {
 312         struct pci_dev *pdev = to_pci_dev(device);
 313         struct iwl_trans *iwl_trans = pci_get_drvdata(pdev);
 314
 315         /* Before you put code here, think about WoWLAN. You cannot check here
 316          * whether WoWLAN is enabled or not, and your code will run even if
 317          * WoWLAN is enabled - don't kill the NIC, someone may need it in Sx.
 318          */
 319
 320         return iwl_trans_suspend(iwl_trans);
 321 }
 322
 323 static int iwl_pci_resume(struct device *device)
 324 {
 325         struct pci_dev *pdev = to_pci_dev(device);
 326         struct iwl_trans *iwl_trans = pci_get_drvdata(pdev);
 327
 328         /* Before you put code here, think about WoWLAN. You cannot check here
 329          * whether WoWLAN is enabled or not, and your code will run even if
 330          * WoWLAN is enabled - the NIC may be alive.
 331          */
 332
 333         /*
 334          * We disable the RETRY_TIMEOUT register (0x41) to keep
 335          * PCI Tx retries from interfering with C3 CPU state.
 336          */
 337         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
 338
 339         return iwl_trans_resume(iwl_trans);
 340 }
 341
 342 static SIMPLE_DEV_PM_OPS(iwl_dev_pm_ops, iwl_pci_suspend, iwl_pci_resume);
 343
 344 #define IWL_PM_OPS      (&iwl_dev_pm_ops)
 345
 346 #else
 347
 348 #define IWL_PM_OPS      NULL
 349
 350 #endif
 351
 352 static struct pci_driver iwl_pci_driver = {
 353         .name = DRV_NAME,
 354         .id_table = iwl_hw_card_ids,
 355         .probe = iwl_pci_probe,
 356         .remove = __devexit_p(iwl_pci_remove),
 357         .driver.pm = IWL_PM_OPS,
 358 };
 359
 360 int __must_check iwl_pci_register_driver(void)
 361 {
 362         int ret;
 363         ret = pci_register_driver(&iwl_pci_driver);
 364         if (ret)
 365                 pr_err("Unable to initialize PCI module\n");
 366
 367         return ret;
 368 }
 369
 370 void iwl_pci_unregister_driver(void)
 371 {
 372         pci_unregister_driver(&iwl_pci_driver);
 373 }