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[deliverable/linux.git] / 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 - 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 #include <linux/module.h>
64 #include <linux/pci.h>
65 #include <linux/pci-aspm.h>
66
67 #include "iwl-bus.h"
68 #include "iwl-io.h"
69 #include "iwl-shared.h"
70 #include "iwl-trans.h"
71 #include "iwl-csr.h"
72 #include "iwl-cfg.h"
73
74 /* PCI registers */
75 #define PCI_CFG_RETRY_TIMEOUT 0x041
76 #define PCI_CFG_LINK_CTRL_VAL_L0S_EN 0x01
77 #define PCI_CFG_LINK_CTRL_VAL_L1_EN 0x02
78
79 struct iwl_pci_bus {
80 /* basic pci-network driver stuff */
81 struct pci_dev *pci_dev;
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
95 struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);
96
97 pos = pci_pcie_cap(pci_dev);
98 pci_read_config_word(pci_dev, pos + PCI_EXP_LNKCTL, &pci_lnk_ctl);
99 return pci_lnk_ctl;
100 }
101
102 static bool iwl_pci_is_pm_supported(struct iwl_bus *bus)
103 {
104 u16 lctl = iwl_pciexp_link_ctrl(bus);
105
106 return !(lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN);
107 }
108
109 static void iwl_pci_apm_config(struct iwl_bus *bus)
110 {
111 /*
112 * HW bug W/A for instability in PCIe bus L0S->L1 transition.
113 * Check if BIOS (or OS) enabled L1-ASPM on this device.
114 * If so (likely), disable L0S, so device moves directly L0->L1;
115 * costs negligible amount of power savings.
116 * If not (unlikely), enable L0S, so there is at least some
117 * power savings, even without L1.
118 */
119 u16 lctl = iwl_pciexp_link_ctrl(bus);
120
121 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
122 PCI_CFG_LINK_CTRL_VAL_L1_EN) {
123 /* L1-ASPM enabled; disable(!) L0S */
124 iwl_set_bit(trans(bus), CSR_GIO_REG,
125 CSR_GIO_REG_VAL_L0S_ENABLED);
126 dev_printk(KERN_INFO, bus->dev, "L1 Enabled; Disabling L0S\n");
127 } else {
128 /* L1-ASPM disabled; enable(!) L0S */
129 iwl_clear_bit(trans(bus), CSR_GIO_REG,
130 CSR_GIO_REG_VAL_L0S_ENABLED);
131 dev_printk(KERN_INFO, bus->dev, "L1 Disabled; Enabling L0S\n");
132 }
133 }
134
135 static void iwl_pci_get_hw_id_string(struct iwl_bus *bus, char buf[],
136 int buf_len)
137 {
138 struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);
139
140 snprintf(buf, buf_len, "PCI ID: 0x%04X:0x%04X", pci_dev->device,
141 pci_dev->subsystem_device);
142 }
143
144 static u32 iwl_pci_get_hw_id(struct iwl_bus *bus)
145 {
146 struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);
147
148 return (pci_dev->device << 16) + pci_dev->subsystem_device;
149 }
150
151 static const struct iwl_bus_ops bus_ops_pci = {
152 .get_pm_support = iwl_pci_is_pm_supported,
153 .apm_config = iwl_pci_apm_config,
154 .get_hw_id_string = iwl_pci_get_hw_id_string,
155 .get_hw_id = iwl_pci_get_hw_id,
156 };
157
158 #define IWL_PCI_DEVICE(dev, subdev, cfg) \
159 .vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \
160 .subvendor = PCI_ANY_ID, .subdevice = (subdev), \
161 .driver_data = (kernel_ulong_t)&(cfg)
162
163 /* Hardware specific file defines the PCI IDs table for that hardware module */
164 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
165 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
166 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
167 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
168 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
169 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
170 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
171 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
172 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
173 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
174 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
175 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
176 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
177 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
178 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
179 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
180 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
181 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
182 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
183 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
184 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
185 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
186 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
187 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
188 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
189
190 /* 5300 Series WiFi */
191 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
192 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
193 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
194 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
195 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
196 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
197 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
198 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
199 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
200 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
201 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
202 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
203
204 /* 5350 Series WiFi/WiMax */
205 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
206 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
207 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
208
209 /* 5150 Series Wifi/WiMax */
210 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
211 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
212 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
213 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
214 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
215 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
216
217 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
218 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
219 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
220 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
221
222 /* 6x00 Series */
223 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
224 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
225 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
226 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
227 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
228 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
229 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
230 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
231 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
232 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
233
234 /* 6x05 Series */
235 {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6005_2agn_cfg)},
236 {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6005_2abg_cfg)},
237 {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6005_2bg_cfg)},
238 {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6005_2agn_cfg)},
239 {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6005_2abg_cfg)},
240 {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6005_2agn_cfg)},
241 {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6005_2abg_cfg)},
242 {IWL_PCI_DEVICE(0x0082, 0xC020, iwl6005_2agn_sff_cfg)},
243 {IWL_PCI_DEVICE(0x0085, 0xC220, iwl6005_2agn_sff_cfg)},
244 {IWL_PCI_DEVICE(0x0082, 0x1341, iwl6005_2agn_d_cfg)},
245 {IWL_PCI_DEVICE(0x0082, 0x1304, iwl6005_2agn_cfg)},/* low 5GHz active */
246 {IWL_PCI_DEVICE(0x0082, 0x1305, iwl6005_2agn_cfg)},/* high 5GHz active */
247
248 /* 6x30 Series */
249 {IWL_PCI_DEVICE(0x008A, 0x5305, iwl1030_bgn_cfg)},
250 {IWL_PCI_DEVICE(0x008A, 0x5307, iwl1030_bg_cfg)},
251 {IWL_PCI_DEVICE(0x008A, 0x5325, iwl1030_bgn_cfg)},
252 {IWL_PCI_DEVICE(0x008A, 0x5327, iwl1030_bg_cfg)},
253 {IWL_PCI_DEVICE(0x008B, 0x5315, iwl1030_bgn_cfg)},
254 {IWL_PCI_DEVICE(0x008B, 0x5317, iwl1030_bg_cfg)},
255 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6030_2agn_cfg)},
256 {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6030_2bgn_cfg)},
257 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6030_2abg_cfg)},
258 {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6030_2agn_cfg)},
259 {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6030_2bgn_cfg)},
260 {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6030_2abg_cfg)},
261 {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6030_2bg_cfg)},
262 {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6030_2agn_cfg)},
263 {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6030_2bgn_cfg)},
264 {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6030_2abg_cfg)},
265
266 /* 6x50 WiFi/WiMax Series */
267 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
268 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
269 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
270 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
271 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
272 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
273
274 /* 6150 WiFi/WiMax Series */
275 {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6150_bgn_cfg)},
276 {IWL_PCI_DEVICE(0x0885, 0x1307, iwl6150_bg_cfg)},
277 {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6150_bgn_cfg)},
278 {IWL_PCI_DEVICE(0x0885, 0x1327, iwl6150_bg_cfg)},
279 {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6150_bgn_cfg)},
280 {IWL_PCI_DEVICE(0x0886, 0x1317, iwl6150_bg_cfg)},
281
282 /* 1000 Series WiFi */
283 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
284 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
285 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
286 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
287 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
288 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
289 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
290 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
291 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
292 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
293 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
294 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
295
296 /* 100 Series WiFi */
297 {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
298 {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
299 {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
300 {IWL_PCI_DEVICE(0x08AF, 0x1017, iwl100_bg_cfg)},
301 {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
302 {IWL_PCI_DEVICE(0x08AE, 0x1027, iwl100_bg_cfg)},
303
304 /* 130 Series WiFi */
305 {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
306 {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
307 {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
308 {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
309 {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
310 {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
311
312 /* 2x00 Series */
313 {IWL_PCI_DEVICE(0x0890, 0x4022, iwl2000_2bgn_cfg)},
314 {IWL_PCI_DEVICE(0x0891, 0x4222, iwl2000_2bgn_cfg)},
315 {IWL_PCI_DEVICE(0x0890, 0x4422, iwl2000_2bgn_cfg)},
316 {IWL_PCI_DEVICE(0x0890, 0x4822, iwl2000_2bgn_d_cfg)},
317
318 /* 2x30 Series */
319 {IWL_PCI_DEVICE(0x0887, 0x4062, iwl2030_2bgn_cfg)},
320 {IWL_PCI_DEVICE(0x0888, 0x4262, iwl2030_2bgn_cfg)},
321 {IWL_PCI_DEVICE(0x0887, 0x4462, iwl2030_2bgn_cfg)},
322
323 /* 6x35 Series */
324 {IWL_PCI_DEVICE(0x088E, 0x4060, iwl6035_2agn_cfg)},
325 {IWL_PCI_DEVICE(0x088F, 0x4260, iwl6035_2agn_cfg)},
326 {IWL_PCI_DEVICE(0x088E, 0x4460, iwl6035_2agn_cfg)},
327
328 /* 105 Series */
329 {IWL_PCI_DEVICE(0x0894, 0x0022, iwl105_bgn_cfg)},
330 {IWL_PCI_DEVICE(0x0895, 0x0222, iwl105_bgn_cfg)},
331 {IWL_PCI_DEVICE(0x0894, 0x0422, iwl105_bgn_cfg)},
332 {IWL_PCI_DEVICE(0x0894, 0x0822, iwl105_bgn_d_cfg)},
333
334 /* 135 Series */
335 {IWL_PCI_DEVICE(0x0892, 0x0062, iwl135_bgn_cfg)},
336 {IWL_PCI_DEVICE(0x0893, 0x0262, iwl135_bgn_cfg)},
337 {IWL_PCI_DEVICE(0x0892, 0x0462, iwl135_bgn_cfg)},
338
339 {0}
340 };
341 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
342
343 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
344 {
345 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
346 struct iwl_bus *bus;
347 struct iwl_pci_bus *pci_bus;
348 int err;
349
350 bus = kzalloc(sizeof(*bus) + sizeof(*pci_bus), GFP_KERNEL);
351 if (!bus) {
352 dev_printk(KERN_ERR, &pdev->dev,
353 "Couldn't allocate iwl_pci_bus");
354 return -ENOMEM;
355 }
356
357 bus->shrd = kzalloc(sizeof(*bus->shrd), GFP_KERNEL);
358 if (!bus->shrd) {
359 dev_printk(KERN_ERR, &pdev->dev,
360 "Couldn't allocate iwl_shared");
361 err = -ENOMEM;
362 goto out_free_bus;
363 }
364
365 bus->shrd->bus = bus;
366 pci_bus = IWL_BUS_GET_PCI_BUS(bus);
367 pci_bus->pci_dev = pdev;
368
369 pci_set_drvdata(pdev, bus);
370
371 bus->dev = &pdev->dev;
372 bus->ops = &bus_ops_pci;
373
374 #ifdef CONFIG_IWLWIFI_IDI
375 trans(bus) = iwl_trans_idi_alloc(bus->shrd, pdev, ent);
376 if (trans(bus) == NULL) {
377 err = -ENOMEM;
378 goto out_free_bus;
379 }
380
381 err = iwl_probe(bus, &trans_ops_idi, cfg);
382 #else
383 trans(bus) = iwl_trans_pcie_alloc(bus->shrd, pdev, ent);
384 if (trans(bus) == NULL) {
385 err = -ENOMEM;
386 goto out_free_bus;
387 }
388
389 err = iwl_probe(bus, &trans_ops_pcie, cfg);
390 #endif
391 if (err)
392 goto out_free_trans;
393
394 return 0;
395
396 out_free_trans:
397 iwl_trans_free(trans(bus));
398 pci_set_drvdata(pdev, NULL);
399 out_free_bus:
400 kfree(bus->shrd);
401 kfree(bus);
402 return err;
403 }
404
405 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
406 {
407 struct iwl_bus *bus = pci_get_drvdata(pdev);
408 struct iwl_shared *shrd = bus->shrd;
409
410 iwl_remove(shrd->priv);
411 iwl_trans_free(shrd->trans);
412
413 pci_set_drvdata(pdev, NULL);
414
415 kfree(bus->shrd);
416 kfree(bus);
417 }
418
419 #ifdef CONFIG_PM_SLEEP
420
421 static int iwl_pci_suspend(struct device *device)
422 {
423 struct pci_dev *pdev = to_pci_dev(device);
424 struct iwl_bus *bus = pci_get_drvdata(pdev);
425 struct iwl_shared *shrd = bus->shrd;
426
427 /* Before you put code here, think about WoWLAN. You cannot check here
428 * whether WoWLAN is enabled or not, and your code will run even if
429 * WoWLAN is enabled - don't kill the NIC, someone may need it in Sx.
430 */
431
432 return iwl_trans_suspend(shrd->trans);
433 }
434
435 static int iwl_pci_resume(struct device *device)
436 {
437 struct pci_dev *pdev = to_pci_dev(device);
438 struct iwl_bus *bus = pci_get_drvdata(pdev);
439 struct iwl_shared *shrd = bus->shrd;
440
441 /* Before you put code here, think about WoWLAN. You cannot check here
442 * whether WoWLAN is enabled or not, and your code will run even if
443 * WoWLAN is enabled - the NIC may be alive.
444 */
445
446 /*
447 * We disable the RETRY_TIMEOUT register (0x41) to keep
448 * PCI Tx retries from interfering with C3 CPU state.
449 */
450 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
451
452 return iwl_trans_resume(shrd->trans);
453 }
454
455 static SIMPLE_DEV_PM_OPS(iwl_dev_pm_ops, iwl_pci_suspend, iwl_pci_resume);
456
457 #define IWL_PM_OPS (&iwl_dev_pm_ops)
458
459 #else
460
461 #define IWL_PM_OPS NULL
462
463 #endif
464
465 static struct pci_driver iwl_pci_driver = {
466 .name = DRV_NAME,
467 .id_table = iwl_hw_card_ids,
468 .probe = iwl_pci_probe,
469 .remove = __devexit_p(iwl_pci_remove),
470 .driver.pm = IWL_PM_OPS,
471 };
472
473 int __must_check iwl_pci_register_driver(void)
474 {
475 int ret;
476 ret = pci_register_driver(&iwl_pci_driver);
477 if (ret)
478 pr_err("Unable to initialize PCI module\n");
479
480 return ret;
481 }
482
483 void iwl_pci_unregister_driver(void)
484 {
485 pci_unregister_driver(&iwl_pci_driver);
486 }
Linux kernel - Deliverables
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