Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * drivers/pci/pci-sysfs.c | |
3 | * | |
4 | * (C) Copyright 2002-2004 Greg Kroah-Hartman <greg@kroah.com> | |
5 | * (C) Copyright 2002-2004 IBM Corp. | |
6 | * (C) Copyright 2003 Matthew Wilcox | |
7 | * (C) Copyright 2003 Hewlett-Packard | |
8 | * (C) Copyright 2004 Jon Smirl <jonsmirl@yahoo.com> | |
9 | * (C) Copyright 2004 Silicon Graphics, Inc. Jesse Barnes <jbarnes@sgi.com> | |
10 | * | |
11 | * File attributes for PCI devices | |
12 | * | |
13 | * Modeled after usb's driverfs.c | |
14 | * | |
15 | */ | |
16 | ||
17 | ||
1da177e4 | 18 | #include <linux/kernel.h> |
b5ff7df3 | 19 | #include <linux/sched.h> |
1da177e4 LT |
20 | #include <linux/pci.h> |
21 | #include <linux/stat.h> | |
363c75db | 22 | #include <linux/export.h> |
1da177e4 LT |
23 | #include <linux/topology.h> |
24 | #include <linux/mm.h> | |
de139a33 | 25 | #include <linux/fs.h> |
aa0ac365 | 26 | #include <linux/capability.h> |
a628e7b8 | 27 | #include <linux/security.h> |
7d715a6c | 28 | #include <linux/pci-aspm.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
1a39b310 | 30 | #include <linux/vgaarb.h> |
448bd857 | 31 | #include <linux/pm_runtime.h> |
1da177e4 LT |
32 | #include "pci.h" |
33 | ||
34 | static int sysfs_initialized; /* = 0 */ | |
35 | ||
36 | /* show configuration fields */ | |
37 | #define pci_config_attr(field, format_string) \ | |
38 | static ssize_t \ | |
e404e274 | 39 | field##_show(struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
40 | { \ |
41 | struct pci_dev *pdev; \ | |
42 | \ | |
43 | pdev = to_pci_dev (dev); \ | |
44 | return sprintf (buf, format_string, pdev->field); \ | |
45 | } | |
46 | ||
47 | pci_config_attr(vendor, "0x%04x\n"); | |
48 | pci_config_attr(device, "0x%04x\n"); | |
49 | pci_config_attr(subsystem_vendor, "0x%04x\n"); | |
50 | pci_config_attr(subsystem_device, "0x%04x\n"); | |
51 | pci_config_attr(class, "0x%06x\n"); | |
52 | pci_config_attr(irq, "%u\n"); | |
53 | ||
bdee9d98 DT |
54 | static ssize_t broken_parity_status_show(struct device *dev, |
55 | struct device_attribute *attr, | |
56 | char *buf) | |
57 | { | |
58 | struct pci_dev *pdev = to_pci_dev(dev); | |
59 | return sprintf (buf, "%u\n", pdev->broken_parity_status); | |
60 | } | |
61 | ||
62 | static ssize_t broken_parity_status_store(struct device *dev, | |
63 | struct device_attribute *attr, | |
64 | const char *buf, size_t count) | |
65 | { | |
66 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 67 | unsigned long val; |
bdee9d98 | 68 | |
9a994e8e | 69 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 TP |
70 | return -EINVAL; |
71 | ||
72 | pdev->broken_parity_status = !!val; | |
73 | ||
74 | return count; | |
bdee9d98 DT |
75 | } |
76 | ||
4327edf6 AC |
77 | static ssize_t local_cpus_show(struct device *dev, |
78 | struct device_attribute *attr, char *buf) | |
1da177e4 | 79 | { |
3be83050 | 80 | const struct cpumask *mask; |
4327edf6 AC |
81 | int len; |
82 | ||
e0cd5160 | 83 | #ifdef CONFIG_NUMA |
6be954d1 DJ |
84 | mask = (dev_to_node(dev) == -1) ? cpu_online_mask : |
85 | cpumask_of_node(dev_to_node(dev)); | |
e0cd5160 | 86 | #else |
3be83050 | 87 | mask = cpumask_of_pcibus(to_pci_dev(dev)->bus); |
e0cd5160 | 88 | #endif |
3be83050 | 89 | len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask); |
39106dcf MT |
90 | buf[len++] = '\n'; |
91 | buf[len] = '\0'; | |
92 | return len; | |
93 | } | |
94 | ||
95 | ||
96 | static ssize_t local_cpulist_show(struct device *dev, | |
97 | struct device_attribute *attr, char *buf) | |
98 | { | |
3be83050 | 99 | const struct cpumask *mask; |
39106dcf MT |
100 | int len; |
101 | ||
e0cd5160 | 102 | #ifdef CONFIG_NUMA |
6be954d1 DJ |
103 | mask = (dev_to_node(dev) == -1) ? cpu_online_mask : |
104 | cpumask_of_node(dev_to_node(dev)); | |
e0cd5160 | 105 | #else |
3be83050 | 106 | mask = cpumask_of_pcibus(to_pci_dev(dev)->bus); |
e0cd5160 | 107 | #endif |
3be83050 | 108 | len = cpulist_scnprintf(buf, PAGE_SIZE-2, mask); |
39106dcf MT |
109 | buf[len++] = '\n'; |
110 | buf[len] = '\0'; | |
111 | return len; | |
1da177e4 LT |
112 | } |
113 | ||
dc2c2c9d YL |
114 | /* |
115 | * PCI Bus Class Devices | |
116 | */ | |
117 | static ssize_t pci_bus_show_cpuaffinity(struct device *dev, | |
118 | int type, | |
119 | struct device_attribute *attr, | |
120 | char *buf) | |
121 | { | |
122 | int ret; | |
123 | const struct cpumask *cpumask; | |
124 | ||
125 | cpumask = cpumask_of_pcibus(to_pci_bus(dev)); | |
126 | ret = type ? | |
127 | cpulist_scnprintf(buf, PAGE_SIZE-2, cpumask) : | |
128 | cpumask_scnprintf(buf, PAGE_SIZE-2, cpumask); | |
129 | buf[ret++] = '\n'; | |
130 | buf[ret] = '\0'; | |
131 | return ret; | |
132 | } | |
133 | ||
56039e65 GKH |
134 | static ssize_t cpuaffinity_show(struct device *dev, |
135 | struct device_attribute *attr, char *buf) | |
dc2c2c9d YL |
136 | { |
137 | return pci_bus_show_cpuaffinity(dev, 0, attr, buf); | |
138 | } | |
56039e65 | 139 | static DEVICE_ATTR_RO(cpuaffinity); |
dc2c2c9d | 140 | |
56039e65 GKH |
141 | static ssize_t cpulistaffinity_show(struct device *dev, |
142 | struct device_attribute *attr, char *buf) | |
dc2c2c9d YL |
143 | { |
144 | return pci_bus_show_cpuaffinity(dev, 1, attr, buf); | |
145 | } | |
56039e65 | 146 | static DEVICE_ATTR_RO(cpulistaffinity); |
dc2c2c9d | 147 | |
1da177e4 LT |
148 | /* show resources */ |
149 | static ssize_t | |
e404e274 | 150 | resource_show(struct device * dev, struct device_attribute *attr, char * buf) |
1da177e4 LT |
151 | { |
152 | struct pci_dev * pci_dev = to_pci_dev(dev); | |
153 | char * str = buf; | |
154 | int i; | |
fde09c6d | 155 | int max; |
e31dd6e4 | 156 | resource_size_t start, end; |
1da177e4 LT |
157 | |
158 | if (pci_dev->subordinate) | |
159 | max = DEVICE_COUNT_RESOURCE; | |
fde09c6d YZ |
160 | else |
161 | max = PCI_BRIDGE_RESOURCES; | |
1da177e4 LT |
162 | |
163 | for (i = 0; i < max; i++) { | |
2311b1f2 ME |
164 | struct resource *res = &pci_dev->resource[i]; |
165 | pci_resource_to_user(pci_dev, i, res, &start, &end); | |
166 | str += sprintf(str,"0x%016llx 0x%016llx 0x%016llx\n", | |
167 | (unsigned long long)start, | |
168 | (unsigned long long)end, | |
169 | (unsigned long long)res->flags); | |
1da177e4 LT |
170 | } |
171 | return (str - buf); | |
172 | } | |
173 | ||
87c8a443 | 174 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
9888549e GK |
175 | { |
176 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
177 | ||
178 | return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n", | |
179 | pci_dev->vendor, pci_dev->device, | |
180 | pci_dev->subsystem_vendor, pci_dev->subsystem_device, | |
181 | (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8), | |
182 | (u8)(pci_dev->class)); | |
183 | } | |
bae94d02 IPG |
184 | |
185 | static ssize_t is_enabled_store(struct device *dev, | |
186 | struct device_attribute *attr, const char *buf, | |
187 | size_t count) | |
9f125d30 AV |
188 | { |
189 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 190 | unsigned long val; |
9a994e8e | 191 | ssize_t result = kstrtoul(buf, 0, &val); |
92425a40 TP |
192 | |
193 | if (result < 0) | |
194 | return result; | |
9f125d30 AV |
195 | |
196 | /* this can crash the machine when done on the "wrong" device */ | |
197 | if (!capable(CAP_SYS_ADMIN)) | |
92425a40 | 198 | return -EPERM; |
9f125d30 | 199 | |
92425a40 | 200 | if (!val) { |
296ccb08 | 201 | if (pci_is_enabled(pdev)) |
bae94d02 IPG |
202 | pci_disable_device(pdev); |
203 | else | |
204 | result = -EIO; | |
92425a40 | 205 | } else |
bae94d02 | 206 | result = pci_enable_device(pdev); |
9f125d30 | 207 | |
bae94d02 IPG |
208 | return result < 0 ? result : count; |
209 | } | |
210 | ||
211 | static ssize_t is_enabled_show(struct device *dev, | |
212 | struct device_attribute *attr, char *buf) | |
213 | { | |
214 | struct pci_dev *pdev; | |
9f125d30 | 215 | |
bae94d02 IPG |
216 | pdev = to_pci_dev (dev); |
217 | return sprintf (buf, "%u\n", atomic_read(&pdev->enable_cnt)); | |
9f125d30 AV |
218 | } |
219 | ||
81bb0e19 BG |
220 | #ifdef CONFIG_NUMA |
221 | static ssize_t | |
222 | numa_node_show(struct device *dev, struct device_attribute *attr, char *buf) | |
223 | { | |
224 | return sprintf (buf, "%d\n", dev->numa_node); | |
225 | } | |
226 | #endif | |
227 | ||
bb965401 YL |
228 | static ssize_t |
229 | dma_mask_bits_show(struct device *dev, struct device_attribute *attr, char *buf) | |
230 | { | |
231 | struct pci_dev *pdev = to_pci_dev(dev); | |
232 | ||
233 | return sprintf (buf, "%d\n", fls64(pdev->dma_mask)); | |
234 | } | |
235 | ||
236 | static ssize_t | |
237 | consistent_dma_mask_bits_show(struct device *dev, struct device_attribute *attr, | |
238 | char *buf) | |
239 | { | |
240 | return sprintf (buf, "%d\n", fls64(dev->coherent_dma_mask)); | |
241 | } | |
242 | ||
fe97064c BG |
243 | static ssize_t |
244 | msi_bus_show(struct device *dev, struct device_attribute *attr, char *buf) | |
245 | { | |
246 | struct pci_dev *pdev = to_pci_dev(dev); | |
247 | ||
248 | if (!pdev->subordinate) | |
249 | return 0; | |
250 | ||
251 | return sprintf (buf, "%u\n", | |
252 | !(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI)); | |
253 | } | |
254 | ||
255 | static ssize_t | |
256 | msi_bus_store(struct device *dev, struct device_attribute *attr, | |
257 | const char *buf, size_t count) | |
258 | { | |
259 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 TP |
260 | unsigned long val; |
261 | ||
9a994e8e | 262 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 | 263 | return -EINVAL; |
fe97064c BG |
264 | |
265 | /* bad things may happen if the no_msi flag is changed | |
266 | * while some drivers are loaded */ | |
267 | if (!capable(CAP_SYS_ADMIN)) | |
92425a40 | 268 | return -EPERM; |
fe97064c | 269 | |
92425a40 TP |
270 | /* Maybe pci devices without subordinate busses shouldn't even have this |
271 | * attribute in the first place? */ | |
fe97064c BG |
272 | if (!pdev->subordinate) |
273 | return count; | |
274 | ||
92425a40 TP |
275 | /* Is the flag going to change, or keep the value it already had? */ |
276 | if (!(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI) ^ | |
277 | !!val) { | |
278 | pdev->subordinate->bus_flags ^= PCI_BUS_FLAGS_NO_MSI; | |
fe97064c | 279 | |
92425a40 TP |
280 | dev_warn(&pdev->dev, "forced subordinate bus to%s support MSI," |
281 | " bad things could happen\n", val ? "" : " not"); | |
fe97064c BG |
282 | } |
283 | ||
284 | return count; | |
285 | } | |
9888549e | 286 | |
705b1aaa AC |
287 | static DEFINE_MUTEX(pci_remove_rescan_mutex); |
288 | static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf, | |
289 | size_t count) | |
290 | { | |
291 | unsigned long val; | |
292 | struct pci_bus *b = NULL; | |
293 | ||
9a994e8e | 294 | if (kstrtoul(buf, 0, &val) < 0) |
705b1aaa AC |
295 | return -EINVAL; |
296 | ||
297 | if (val) { | |
298 | mutex_lock(&pci_remove_rescan_mutex); | |
299 | while ((b = pci_find_next_bus(b)) != NULL) | |
300 | pci_rescan_bus(b); | |
301 | mutex_unlock(&pci_remove_rescan_mutex); | |
302 | } | |
303 | return count; | |
304 | } | |
305 | ||
306 | struct bus_attribute pci_bus_attrs[] = { | |
307 | __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store), | |
308 | __ATTR_NULL | |
309 | }; | |
77c27c7b | 310 | |
738a6396 AC |
311 | static ssize_t |
312 | dev_rescan_store(struct device *dev, struct device_attribute *attr, | |
313 | const char *buf, size_t count) | |
314 | { | |
315 | unsigned long val; | |
316 | struct pci_dev *pdev = to_pci_dev(dev); | |
317 | ||
9a994e8e | 318 | if (kstrtoul(buf, 0, &val) < 0) |
738a6396 AC |
319 | return -EINVAL; |
320 | ||
321 | if (val) { | |
322 | mutex_lock(&pci_remove_rescan_mutex); | |
323 | pci_rescan_bus(pdev->bus); | |
324 | mutex_unlock(&pci_remove_rescan_mutex); | |
325 | } | |
326 | return count; | |
327 | } | |
dfab88be JL |
328 | struct device_attribute dev_rescan_attr = __ATTR(rescan, (S_IWUSR|S_IWGRP), |
329 | NULL, dev_rescan_store); | |
738a6396 | 330 | |
77c27c7b AC |
331 | static void remove_callback(struct device *dev) |
332 | { | |
333 | struct pci_dev *pdev = to_pci_dev(dev); | |
334 | ||
335 | mutex_lock(&pci_remove_rescan_mutex); | |
210647af | 336 | pci_stop_and_remove_bus_device(pdev); |
77c27c7b AC |
337 | mutex_unlock(&pci_remove_rescan_mutex); |
338 | } | |
339 | ||
340 | static ssize_t | |
341 | remove_store(struct device *dev, struct device_attribute *dummy, | |
342 | const char *buf, size_t count) | |
343 | { | |
344 | int ret = 0; | |
345 | unsigned long val; | |
77c27c7b | 346 | |
9a994e8e | 347 | if (kstrtoul(buf, 0, &val) < 0) |
77c27c7b AC |
348 | return -EINVAL; |
349 | ||
77c27c7b AC |
350 | /* An attribute cannot be unregistered by one of its own methods, |
351 | * so we have to use this roundabout approach. | |
352 | */ | |
353 | if (val) | |
354 | ret = device_schedule_callback(dev, remove_callback); | |
355 | if (ret) | |
356 | count = ret; | |
357 | return count; | |
358 | } | |
dfab88be JL |
359 | struct device_attribute dev_remove_attr = __ATTR(remove, (S_IWUSR|S_IWGRP), |
360 | NULL, remove_store); | |
b9d320fc YL |
361 | |
362 | static ssize_t | |
363 | dev_bus_rescan_store(struct device *dev, struct device_attribute *attr, | |
364 | const char *buf, size_t count) | |
365 | { | |
366 | unsigned long val; | |
367 | struct pci_bus *bus = to_pci_bus(dev); | |
368 | ||
9a994e8e | 369 | if (kstrtoul(buf, 0, &val) < 0) |
b9d320fc YL |
370 | return -EINVAL; |
371 | ||
372 | if (val) { | |
373 | mutex_lock(&pci_remove_rescan_mutex); | |
2f320521 YL |
374 | if (!pci_is_root_bus(bus) && list_empty(&bus->devices)) |
375 | pci_rescan_bus_bridge_resize(bus->self); | |
376 | else | |
377 | pci_rescan_bus(bus); | |
b9d320fc YL |
378 | mutex_unlock(&pci_remove_rescan_mutex); |
379 | } | |
380 | return count; | |
381 | } | |
56039e65 | 382 | static DEVICE_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store); |
b9d320fc | 383 | |
448bd857 HY |
384 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
385 | static ssize_t d3cold_allowed_store(struct device *dev, | |
386 | struct device_attribute *attr, | |
387 | const char *buf, size_t count) | |
388 | { | |
389 | struct pci_dev *pdev = to_pci_dev(dev); | |
390 | unsigned long val; | |
391 | ||
9a994e8e | 392 | if (kstrtoul(buf, 0, &val) < 0) |
448bd857 HY |
393 | return -EINVAL; |
394 | ||
395 | pdev->d3cold_allowed = !!val; | |
396 | pm_runtime_resume(dev); | |
397 | ||
398 | return count; | |
399 | } | |
400 | ||
401 | static ssize_t d3cold_allowed_show(struct device *dev, | |
402 | struct device_attribute *attr, char *buf) | |
403 | { | |
404 | struct pci_dev *pdev = to_pci_dev(dev); | |
405 | return sprintf (buf, "%u\n", pdev->d3cold_allowed); | |
406 | } | |
407 | #endif | |
408 | ||
1789382a DD |
409 | #ifdef CONFIG_PCI_IOV |
410 | static ssize_t sriov_totalvfs_show(struct device *dev, | |
411 | struct device_attribute *attr, | |
412 | char *buf) | |
413 | { | |
414 | struct pci_dev *pdev = to_pci_dev(dev); | |
415 | ||
bff73156 | 416 | return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); |
1789382a DD |
417 | } |
418 | ||
419 | ||
420 | static ssize_t sriov_numvfs_show(struct device *dev, | |
421 | struct device_attribute *attr, | |
422 | char *buf) | |
423 | { | |
424 | struct pci_dev *pdev = to_pci_dev(dev); | |
425 | ||
6b136724 | 426 | return sprintf(buf, "%u\n", pdev->sriov->num_VFs); |
1789382a DD |
427 | } |
428 | ||
429 | /* | |
faa48a50 BH |
430 | * num_vfs > 0; number of VFs to enable |
431 | * num_vfs = 0; disable all VFs | |
1789382a DD |
432 | * |
433 | * Note: SRIOV spec doesn't allow partial VF | |
faa48a50 | 434 | * disable, so it's all or none. |
1789382a DD |
435 | */ |
436 | static ssize_t sriov_numvfs_store(struct device *dev, | |
437 | struct device_attribute *attr, | |
438 | const char *buf, size_t count) | |
439 | { | |
440 | struct pci_dev *pdev = to_pci_dev(dev); | |
faa48a50 BH |
441 | int ret; |
442 | u16 num_vfs; | |
1789382a | 443 | |
faa48a50 BH |
444 | ret = kstrtou16(buf, 0, &num_vfs); |
445 | if (ret < 0) | |
446 | return ret; | |
447 | ||
448 | if (num_vfs > pci_sriov_get_totalvfs(pdev)) | |
449 | return -ERANGE; | |
450 | ||
451 | if (num_vfs == pdev->sriov->num_VFs) | |
452 | return count; /* no change */ | |
1789382a DD |
453 | |
454 | /* is PF driver loaded w/callback */ | |
455 | if (!pdev->driver || !pdev->driver->sriov_configure) { | |
faa48a50 | 456 | dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n"); |
1789382a DD |
457 | return -ENOSYS; |
458 | } | |
459 | ||
faa48a50 BH |
460 | if (num_vfs == 0) { |
461 | /* disable VFs */ | |
462 | ret = pdev->driver->sriov_configure(pdev, 0); | |
463 | if (ret < 0) | |
464 | return ret; | |
465 | return count; | |
1789382a DD |
466 | } |
467 | ||
faa48a50 BH |
468 | /* enable VFs */ |
469 | if (pdev->sriov->num_VFs) { | |
470 | dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n", | |
471 | pdev->sriov->num_VFs, num_vfs); | |
472 | return -EBUSY; | |
1789382a DD |
473 | } |
474 | ||
faa48a50 BH |
475 | ret = pdev->driver->sriov_configure(pdev, num_vfs); |
476 | if (ret < 0) | |
477 | return ret; | |
1789382a | 478 | |
faa48a50 BH |
479 | if (ret != num_vfs) |
480 | dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n", | |
481 | num_vfs, ret); | |
482 | ||
483 | return count; | |
1789382a DD |
484 | } |
485 | ||
486 | static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); | |
487 | static struct device_attribute sriov_numvfs_attr = | |
488 | __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), | |
489 | sriov_numvfs_show, sriov_numvfs_store); | |
490 | #endif /* CONFIG_PCI_IOV */ | |
491 | ||
1da177e4 LT |
492 | struct device_attribute pci_dev_attrs[] = { |
493 | __ATTR_RO(resource), | |
494 | __ATTR_RO(vendor), | |
495 | __ATTR_RO(device), | |
496 | __ATTR_RO(subsystem_vendor), | |
497 | __ATTR_RO(subsystem_device), | |
498 | __ATTR_RO(class), | |
499 | __ATTR_RO(irq), | |
500 | __ATTR_RO(local_cpus), | |
39106dcf | 501 | __ATTR_RO(local_cpulist), |
9888549e | 502 | __ATTR_RO(modalias), |
81bb0e19 BG |
503 | #ifdef CONFIG_NUMA |
504 | __ATTR_RO(numa_node), | |
505 | #endif | |
bb965401 YL |
506 | __ATTR_RO(dma_mask_bits), |
507 | __ATTR_RO(consistent_dma_mask_bits), | |
9f125d30 | 508 | __ATTR(enable, 0600, is_enabled_show, is_enabled_store), |
bdee9d98 DT |
509 | __ATTR(broken_parity_status,(S_IRUGO|S_IWUSR), |
510 | broken_parity_status_show,broken_parity_status_store), | |
fe97064c | 511 | __ATTR(msi_bus, 0644, msi_bus_show, msi_bus_store), |
448bd857 HY |
512 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
513 | __ATTR(d3cold_allowed, 0644, d3cold_allowed_show, d3cold_allowed_store), | |
77c27c7b | 514 | #endif |
1da177e4 LT |
515 | __ATTR_NULL, |
516 | }; | |
517 | ||
56039e65 GKH |
518 | static struct attribute *pcibus_attrs[] = { |
519 | &dev_attr_rescan.attr, | |
520 | &dev_attr_cpuaffinity.attr, | |
521 | &dev_attr_cpulistaffinity.attr, | |
522 | NULL, | |
523 | }; | |
524 | ||
525 | static const struct attribute_group pcibus_group = { | |
526 | .attrs = pcibus_attrs, | |
527 | }; | |
528 | ||
529 | const struct attribute_group *pcibus_groups[] = { | |
530 | &pcibus_group, | |
531 | NULL, | |
b9d320fc YL |
532 | }; |
533 | ||
217f45de DA |
534 | static ssize_t |
535 | boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf) | |
536 | { | |
537 | struct pci_dev *pdev = to_pci_dev(dev); | |
1a39b310 MG |
538 | struct pci_dev *vga_dev = vga_default_device(); |
539 | ||
540 | if (vga_dev) | |
541 | return sprintf(buf, "%u\n", (pdev == vga_dev)); | |
217f45de DA |
542 | |
543 | return sprintf(buf, "%u\n", | |
544 | !!(pdev->resource[PCI_ROM_RESOURCE].flags & | |
545 | IORESOURCE_ROM_SHADOW)); | |
546 | } | |
547 | struct device_attribute vga_attr = __ATTR_RO(boot_vga); | |
548 | ||
1da177e4 | 549 | static ssize_t |
2c3c8bea CW |
550 | pci_read_config(struct file *filp, struct kobject *kobj, |
551 | struct bin_attribute *bin_attr, | |
91a69029 | 552 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
553 | { |
554 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
555 | unsigned int size = 64; | |
556 | loff_t init_off = off; | |
4c0619ad | 557 | u8 *data = (u8*) buf; |
1da177e4 LT |
558 | |
559 | /* Several chips lock up trying to read undefined config space */ | |
b7e724d3 | 560 | if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0) { |
1da177e4 LT |
561 | size = dev->cfg_size; |
562 | } else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) { | |
563 | size = 128; | |
564 | } | |
565 | ||
566 | if (off > size) | |
567 | return 0; | |
568 | if (off + count > size) { | |
569 | size -= off; | |
570 | count = size; | |
571 | } else { | |
572 | size = count; | |
573 | } | |
574 | ||
3d8387ef HY |
575 | pci_config_pm_runtime_get(dev); |
576 | ||
4c0619ad | 577 | if ((off & 1) && size) { |
578 | u8 val; | |
e04b0ea2 | 579 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 580 | data[off - init_off] = val; |
1da177e4 | 581 | off++; |
4c0619ad | 582 | size--; |
583 | } | |
584 | ||
585 | if ((off & 3) && size > 2) { | |
586 | u16 val; | |
e04b0ea2 | 587 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 588 | data[off - init_off] = val & 0xff; |
589 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
590 | off += 2; | |
591 | size -= 2; | |
1da177e4 LT |
592 | } |
593 | ||
594 | while (size > 3) { | |
4c0619ad | 595 | u32 val; |
e04b0ea2 | 596 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad | 597 | data[off - init_off] = val & 0xff; |
598 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
599 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
600 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
601 | off += 4; |
602 | size -= 4; | |
603 | } | |
604 | ||
4c0619ad | 605 | if (size >= 2) { |
606 | u16 val; | |
e04b0ea2 | 607 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 608 | data[off - init_off] = val & 0xff; |
609 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
610 | off += 2; | |
611 | size -= 2; | |
612 | } | |
613 | ||
614 | if (size > 0) { | |
615 | u8 val; | |
e04b0ea2 | 616 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 617 | data[off - init_off] = val; |
1da177e4 LT |
618 | off++; |
619 | --size; | |
620 | } | |
621 | ||
3d8387ef HY |
622 | pci_config_pm_runtime_put(dev); |
623 | ||
1da177e4 LT |
624 | return count; |
625 | } | |
626 | ||
627 | static ssize_t | |
2c3c8bea CW |
628 | pci_write_config(struct file* filp, struct kobject *kobj, |
629 | struct bin_attribute *bin_attr, | |
91a69029 | 630 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
631 | { |
632 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
633 | unsigned int size = count; | |
634 | loff_t init_off = off; | |
4c0619ad | 635 | u8 *data = (u8*) buf; |
1da177e4 LT |
636 | |
637 | if (off > dev->cfg_size) | |
638 | return 0; | |
639 | if (off + count > dev->cfg_size) { | |
640 | size = dev->cfg_size - off; | |
641 | count = size; | |
642 | } | |
4c0619ad | 643 | |
3d8387ef HY |
644 | pci_config_pm_runtime_get(dev); |
645 | ||
4c0619ad | 646 | if ((off & 1) && size) { |
e04b0ea2 | 647 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 648 | off++; |
4c0619ad | 649 | size--; |
1da177e4 | 650 | } |
4c0619ad | 651 | |
652 | if ((off & 3) && size > 2) { | |
653 | u16 val = data[off - init_off]; | |
654 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 655 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 656 | off += 2; |
657 | size -= 2; | |
658 | } | |
1da177e4 LT |
659 | |
660 | while (size > 3) { | |
4c0619ad | 661 | u32 val = data[off - init_off]; |
662 | val |= (u32) data[off - init_off + 1] << 8; | |
663 | val |= (u32) data[off - init_off + 2] << 16; | |
664 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 665 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
666 | off += 4; |
667 | size -= 4; | |
668 | } | |
4c0619ad | 669 | |
670 | if (size >= 2) { | |
671 | u16 val = data[off - init_off]; | |
672 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 673 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 674 | off += 2; |
675 | size -= 2; | |
676 | } | |
1da177e4 | 677 | |
4c0619ad | 678 | if (size) { |
e04b0ea2 | 679 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
680 | off++; |
681 | --size; | |
682 | } | |
683 | ||
3d8387ef HY |
684 | pci_config_pm_runtime_put(dev); |
685 | ||
1da177e4 LT |
686 | return count; |
687 | } | |
688 | ||
94e61088 | 689 | static ssize_t |
2c3c8bea CW |
690 | read_vpd_attr(struct file *filp, struct kobject *kobj, |
691 | struct bin_attribute *bin_attr, | |
287d19ce | 692 | char *buf, loff_t off, size_t count) |
94e61088 BH |
693 | { |
694 | struct pci_dev *dev = | |
695 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
696 | |
697 | if (off > bin_attr->size) | |
698 | count = 0; | |
699 | else if (count > bin_attr->size - off) | |
700 | count = bin_attr->size - off; | |
94e61088 | 701 | |
287d19ce | 702 | return pci_read_vpd(dev, off, count, buf); |
94e61088 BH |
703 | } |
704 | ||
705 | static ssize_t | |
2c3c8bea CW |
706 | write_vpd_attr(struct file *filp, struct kobject *kobj, |
707 | struct bin_attribute *bin_attr, | |
287d19ce | 708 | char *buf, loff_t off, size_t count) |
94e61088 BH |
709 | { |
710 | struct pci_dev *dev = | |
711 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
712 | |
713 | if (off > bin_attr->size) | |
714 | count = 0; | |
715 | else if (count > bin_attr->size - off) | |
716 | count = bin_attr->size - off; | |
94e61088 | 717 | |
287d19ce | 718 | return pci_write_vpd(dev, off, count, buf); |
94e61088 BH |
719 | } |
720 | ||
1da177e4 LT |
721 | #ifdef HAVE_PCI_LEGACY |
722 | /** | |
723 | * pci_read_legacy_io - read byte(s) from legacy I/O port space | |
2c3c8bea | 724 | * @filp: open sysfs file |
1da177e4 | 725 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 726 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
727 | * @buf: buffer to store results |
728 | * @off: offset into legacy I/O port space | |
729 | * @count: number of bytes to read | |
730 | * | |
731 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
732 | * callback routine (pci_legacy_read). | |
733 | */ | |
f19aeb1f | 734 | static ssize_t |
2c3c8bea CW |
735 | pci_read_legacy_io(struct file *filp, struct kobject *kobj, |
736 | struct bin_attribute *bin_attr, | |
91a69029 | 737 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
738 | { |
739 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 740 | struct device, |
1da177e4 LT |
741 | kobj)); |
742 | ||
743 | /* Only support 1, 2 or 4 byte accesses */ | |
744 | if (count != 1 && count != 2 && count != 4) | |
745 | return -EINVAL; | |
746 | ||
747 | return pci_legacy_read(bus, off, (u32 *)buf, count); | |
748 | } | |
749 | ||
750 | /** | |
751 | * pci_write_legacy_io - write byte(s) to legacy I/O port space | |
2c3c8bea | 752 | * @filp: open sysfs file |
1da177e4 | 753 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 754 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
755 | * @buf: buffer containing value to be written |
756 | * @off: offset into legacy I/O port space | |
757 | * @count: number of bytes to write | |
758 | * | |
759 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
760 | * callback routine (pci_legacy_write). | |
761 | */ | |
f19aeb1f | 762 | static ssize_t |
2c3c8bea CW |
763 | pci_write_legacy_io(struct file *filp, struct kobject *kobj, |
764 | struct bin_attribute *bin_attr, | |
91a69029 | 765 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
766 | { |
767 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 768 | struct device, |
1da177e4 LT |
769 | kobj)); |
770 | /* Only support 1, 2 or 4 byte accesses */ | |
771 | if (count != 1 && count != 2 && count != 4) | |
772 | return -EINVAL; | |
773 | ||
774 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
775 | } | |
776 | ||
777 | /** | |
778 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
2c3c8bea | 779 | * @filp: open sysfs file |
1da177e4 LT |
780 | * @kobj: kobject corresponding to device to be mapped |
781 | * @attr: struct bin_attribute for this file | |
782 | * @vma: struct vm_area_struct passed to mmap | |
783 | * | |
f19aeb1f | 784 | * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap |
1da177e4 LT |
785 | * legacy memory space (first meg of bus space) into application virtual |
786 | * memory space. | |
787 | */ | |
f19aeb1f | 788 | static int |
2c3c8bea CW |
789 | pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, |
790 | struct bin_attribute *attr, | |
1da177e4 LT |
791 | struct vm_area_struct *vma) |
792 | { | |
793 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 794 | struct device, |
1da177e4 LT |
795 | kobj)); |
796 | ||
f19aeb1f BH |
797 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); |
798 | } | |
799 | ||
800 | /** | |
801 | * pci_mmap_legacy_io - map legacy PCI IO into user memory space | |
2c3c8bea | 802 | * @filp: open sysfs file |
f19aeb1f BH |
803 | * @kobj: kobject corresponding to device to be mapped |
804 | * @attr: struct bin_attribute for this file | |
805 | * @vma: struct vm_area_struct passed to mmap | |
806 | * | |
807 | * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap | |
808 | * legacy IO space (first meg of bus space) into application virtual | |
809 | * memory space. Returns -ENOSYS if the operation isn't supported | |
810 | */ | |
811 | static int | |
2c3c8bea CW |
812 | pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, |
813 | struct bin_attribute *attr, | |
f19aeb1f BH |
814 | struct vm_area_struct *vma) |
815 | { | |
816 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
817 | struct device, | |
818 | kobj)); | |
819 | ||
820 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); | |
821 | } | |
822 | ||
10a0ef39 IK |
823 | /** |
824 | * pci_adjust_legacy_attr - adjustment of legacy file attributes | |
825 | * @b: bus to create files under | |
826 | * @mmap_type: I/O port or memory | |
827 | * | |
828 | * Stub implementation. Can be overridden by arch if necessary. | |
829 | */ | |
830 | void __weak | |
831 | pci_adjust_legacy_attr(struct pci_bus *b, enum pci_mmap_state mmap_type) | |
832 | { | |
833 | return; | |
834 | } | |
835 | ||
f19aeb1f BH |
836 | /** |
837 | * pci_create_legacy_files - create legacy I/O port and memory files | |
838 | * @b: bus to create files under | |
839 | * | |
840 | * Some platforms allow access to legacy I/O port and ISA memory space on | |
841 | * a per-bus basis. This routine creates the files and ties them into | |
842 | * their associated read, write and mmap files from pci-sysfs.c | |
843 | * | |
25985edc | 844 | * On error unwind, but don't propagate the error to the caller |
f19aeb1f BH |
845 | * as it is ok to set up the PCI bus without these files. |
846 | */ | |
847 | void pci_create_legacy_files(struct pci_bus *b) | |
848 | { | |
849 | int error; | |
850 | ||
851 | b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, | |
852 | GFP_ATOMIC); | |
853 | if (!b->legacy_io) | |
854 | goto kzalloc_err; | |
855 | ||
62e877b8 | 856 | sysfs_bin_attr_init(b->legacy_io); |
f19aeb1f BH |
857 | b->legacy_io->attr.name = "legacy_io"; |
858 | b->legacy_io->size = 0xffff; | |
859 | b->legacy_io->attr.mode = S_IRUSR | S_IWUSR; | |
860 | b->legacy_io->read = pci_read_legacy_io; | |
861 | b->legacy_io->write = pci_write_legacy_io; | |
862 | b->legacy_io->mmap = pci_mmap_legacy_io; | |
10a0ef39 | 863 | pci_adjust_legacy_attr(b, pci_mmap_io); |
f19aeb1f BH |
864 | error = device_create_bin_file(&b->dev, b->legacy_io); |
865 | if (error) | |
866 | goto legacy_io_err; | |
867 | ||
868 | /* Allocated above after the legacy_io struct */ | |
869 | b->legacy_mem = b->legacy_io + 1; | |
6757eca3 | 870 | sysfs_bin_attr_init(b->legacy_mem); |
f19aeb1f BH |
871 | b->legacy_mem->attr.name = "legacy_mem"; |
872 | b->legacy_mem->size = 1024*1024; | |
873 | b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR; | |
874 | b->legacy_mem->mmap = pci_mmap_legacy_mem; | |
10a0ef39 | 875 | pci_adjust_legacy_attr(b, pci_mmap_mem); |
f19aeb1f BH |
876 | error = device_create_bin_file(&b->dev, b->legacy_mem); |
877 | if (error) | |
878 | goto legacy_mem_err; | |
879 | ||
880 | return; | |
881 | ||
882 | legacy_mem_err: | |
883 | device_remove_bin_file(&b->dev, b->legacy_io); | |
884 | legacy_io_err: | |
885 | kfree(b->legacy_io); | |
886 | b->legacy_io = NULL; | |
887 | kzalloc_err: | |
888 | printk(KERN_WARNING "pci: warning: could not create legacy I/O port " | |
889 | "and ISA memory resources to sysfs\n"); | |
890 | return; | |
891 | } | |
892 | ||
893 | void pci_remove_legacy_files(struct pci_bus *b) | |
894 | { | |
895 | if (b->legacy_io) { | |
896 | device_remove_bin_file(&b->dev, b->legacy_io); | |
897 | device_remove_bin_file(&b->dev, b->legacy_mem); | |
898 | kfree(b->legacy_io); /* both are allocated here */ | |
899 | } | |
1da177e4 LT |
900 | } |
901 | #endif /* HAVE_PCI_LEGACY */ | |
902 | ||
903 | #ifdef HAVE_PCI_MMAP | |
b5ff7df3 | 904 | |
3b519e4e MW |
905 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, |
906 | enum pci_mmap_api mmap_api) | |
b5ff7df3 | 907 | { |
3b519e4e | 908 | unsigned long nr, start, size, pci_start; |
b5ff7df3 | 909 | |
3b519e4e MW |
910 | if (pci_resource_len(pdev, resno) == 0) |
911 | return 0; | |
64b00175 | 912 | nr = vma_pages(vma); |
b5ff7df3 | 913 | start = vma->vm_pgoff; |
88e7df0b | 914 | size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; |
8c05cd08 | 915 | pci_start = (mmap_api == PCI_MMAP_PROCFS) ? |
3b519e4e MW |
916 | pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; |
917 | if (start >= pci_start && start < pci_start + size && | |
918 | start + nr <= pci_start + size) | |
b5ff7df3 | 919 | return 1; |
b5ff7df3 LT |
920 | return 0; |
921 | } | |
922 | ||
1da177e4 LT |
923 | /** |
924 | * pci_mmap_resource - map a PCI resource into user memory space | |
925 | * @kobj: kobject for mapping | |
926 | * @attr: struct bin_attribute for the file being mapped | |
927 | * @vma: struct vm_area_struct passed into the mmap | |
45aec1ae | 928 | * @write_combine: 1 for write_combine mapping |
1da177e4 LT |
929 | * |
930 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
1da177e4 LT |
931 | */ |
932 | static int | |
933 | pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, | |
45aec1ae | 934 | struct vm_area_struct *vma, int write_combine) |
1da177e4 LT |
935 | { |
936 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
937 | struct device, kobj)); | |
a3f5835a | 938 | struct resource *res = attr->private; |
1da177e4 | 939 | enum pci_mmap_state mmap_type; |
e31dd6e4 | 940 | resource_size_t start, end; |
2311b1f2 | 941 | int i; |
1da177e4 | 942 | |
2311b1f2 ME |
943 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
944 | if (res == &pdev->resource[i]) | |
945 | break; | |
946 | if (i >= PCI_ROM_RESOURCE) | |
947 | return -ENODEV; | |
948 | ||
3b519e4e MW |
949 | if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { |
950 | WARN(1, "process \"%s\" tried to map 0x%08lx bytes " | |
951 | "at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n", | |
952 | current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, | |
953 | pci_name(pdev), i, | |
e25cd062 RD |
954 | (u64)pci_resource_start(pdev, i), |
955 | (u64)pci_resource_len(pdev, i)); | |
b5ff7df3 | 956 | return -EINVAL; |
3b519e4e | 957 | } |
b5ff7df3 | 958 | |
2311b1f2 ME |
959 | /* pci_mmap_page_range() expects the same kind of entry as coming |
960 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
961 | * different from the resource itself, arch will do necessary fixup. | |
962 | */ | |
963 | pci_resource_to_user(pdev, i, res, &start, &end); | |
964 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 LT |
965 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
966 | ||
e8de1481 AV |
967 | if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start)) |
968 | return -EINVAL; | |
969 | ||
45aec1ae | 970 | return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); |
971 | } | |
972 | ||
973 | static int | |
2c3c8bea CW |
974 | pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, |
975 | struct bin_attribute *attr, | |
45aec1ae | 976 | struct vm_area_struct *vma) |
977 | { | |
978 | return pci_mmap_resource(kobj, attr, vma, 0); | |
979 | } | |
980 | ||
981 | static int | |
2c3c8bea CW |
982 | pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, |
983 | struct bin_attribute *attr, | |
45aec1ae | 984 | struct vm_area_struct *vma) |
985 | { | |
986 | return pci_mmap_resource(kobj, attr, vma, 1); | |
1da177e4 LT |
987 | } |
988 | ||
8633328b AW |
989 | static ssize_t |
990 | pci_resource_io(struct file *filp, struct kobject *kobj, | |
991 | struct bin_attribute *attr, char *buf, | |
992 | loff_t off, size_t count, bool write) | |
993 | { | |
994 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
995 | struct device, kobj)); | |
996 | struct resource *res = attr->private; | |
997 | unsigned long port = off; | |
998 | int i; | |
999 | ||
1000 | for (i = 0; i < PCI_ROM_RESOURCE; i++) | |
1001 | if (res == &pdev->resource[i]) | |
1002 | break; | |
1003 | if (i >= PCI_ROM_RESOURCE) | |
1004 | return -ENODEV; | |
1005 | ||
1006 | port += pci_resource_start(pdev, i); | |
1007 | ||
1008 | if (port > pci_resource_end(pdev, i)) | |
1009 | return 0; | |
1010 | ||
1011 | if (port + count - 1 > pci_resource_end(pdev, i)) | |
1012 | return -EINVAL; | |
1013 | ||
1014 | switch (count) { | |
1015 | case 1: | |
1016 | if (write) | |
1017 | outb(*(u8 *)buf, port); | |
1018 | else | |
1019 | *(u8 *)buf = inb(port); | |
1020 | return 1; | |
1021 | case 2: | |
1022 | if (write) | |
1023 | outw(*(u16 *)buf, port); | |
1024 | else | |
1025 | *(u16 *)buf = inw(port); | |
1026 | return 2; | |
1027 | case 4: | |
1028 | if (write) | |
1029 | outl(*(u32 *)buf, port); | |
1030 | else | |
1031 | *(u32 *)buf = inl(port); | |
1032 | return 4; | |
1033 | } | |
1034 | return -EINVAL; | |
1035 | } | |
1036 | ||
1037 | static ssize_t | |
1038 | pci_read_resource_io(struct file *filp, struct kobject *kobj, | |
1039 | struct bin_attribute *attr, char *buf, | |
1040 | loff_t off, size_t count) | |
1041 | { | |
1042 | return pci_resource_io(filp, kobj, attr, buf, off, count, false); | |
1043 | } | |
1044 | ||
1045 | static ssize_t | |
1046 | pci_write_resource_io(struct file *filp, struct kobject *kobj, | |
1047 | struct bin_attribute *attr, char *buf, | |
1048 | loff_t off, size_t count) | |
1049 | { | |
1050 | return pci_resource_io(filp, kobj, attr, buf, off, count, true); | |
1051 | } | |
1052 | ||
b19441af GKH |
1053 | /** |
1054 | * pci_remove_resource_files - cleanup resource files | |
cffb2faf | 1055 | * @pdev: dev to cleanup |
b19441af | 1056 | * |
cffb2faf | 1057 | * If we created resource files for @pdev, remove them from sysfs and |
b19441af GKH |
1058 | * free their resources. |
1059 | */ | |
1060 | static void | |
1061 | pci_remove_resource_files(struct pci_dev *pdev) | |
1062 | { | |
1063 | int i; | |
1064 | ||
1065 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1066 | struct bin_attribute *res_attr; | |
1067 | ||
1068 | res_attr = pdev->res_attr[i]; | |
1069 | if (res_attr) { | |
1070 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1071 | kfree(res_attr); | |
1072 | } | |
45aec1ae | 1073 | |
1074 | res_attr = pdev->res_attr_wc[i]; | |
1075 | if (res_attr) { | |
1076 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1077 | kfree(res_attr); | |
1078 | } | |
b19441af GKH |
1079 | } |
1080 | } | |
1081 | ||
45aec1ae | 1082 | static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) |
1083 | { | |
1084 | /* allocate attribute structure, piggyback attribute name */ | |
1085 | int name_len = write_combine ? 13 : 10; | |
1086 | struct bin_attribute *res_attr; | |
1087 | int retval; | |
1088 | ||
1089 | res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); | |
1090 | if (res_attr) { | |
1091 | char *res_attr_name = (char *)(res_attr + 1); | |
1092 | ||
a07e4156 | 1093 | sysfs_bin_attr_init(res_attr); |
45aec1ae | 1094 | if (write_combine) { |
1095 | pdev->res_attr_wc[num] = res_attr; | |
1096 | sprintf(res_attr_name, "resource%d_wc", num); | |
1097 | res_attr->mmap = pci_mmap_resource_wc; | |
1098 | } else { | |
1099 | pdev->res_attr[num] = res_attr; | |
1100 | sprintf(res_attr_name, "resource%d", num); | |
1101 | res_attr->mmap = pci_mmap_resource_uc; | |
1102 | } | |
8633328b AW |
1103 | if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { |
1104 | res_attr->read = pci_read_resource_io; | |
1105 | res_attr->write = pci_write_resource_io; | |
1106 | } | |
45aec1ae | 1107 | res_attr->attr.name = res_attr_name; |
1108 | res_attr->attr.mode = S_IRUSR | S_IWUSR; | |
1109 | res_attr->size = pci_resource_len(pdev, num); | |
1110 | res_attr->private = &pdev->resource[num]; | |
1111 | retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
1112 | } else | |
1113 | retval = -ENOMEM; | |
1114 | ||
1115 | return retval; | |
1116 | } | |
1117 | ||
1da177e4 LT |
1118 | /** |
1119 | * pci_create_resource_files - create resource files in sysfs for @dev | |
cffb2faf | 1120 | * @pdev: dev in question |
1da177e4 | 1121 | * |
cffb2faf | 1122 | * Walk the resources in @pdev creating files for each resource available. |
1da177e4 | 1123 | */ |
b19441af | 1124 | static int pci_create_resource_files(struct pci_dev *pdev) |
1da177e4 LT |
1125 | { |
1126 | int i; | |
b19441af | 1127 | int retval; |
1da177e4 LT |
1128 | |
1129 | /* Expose the PCI resources from this device as files */ | |
1130 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1da177e4 LT |
1131 | |
1132 | /* skip empty resources */ | |
1133 | if (!pci_resource_len(pdev, i)) | |
1134 | continue; | |
1135 | ||
45aec1ae | 1136 | retval = pci_create_attr(pdev, i, 0); |
1137 | /* for prefetchable resources, create a WC mappable file */ | |
1138 | if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) | |
1139 | retval = pci_create_attr(pdev, i, 1); | |
1140 | ||
1141 | if (retval) { | |
1142 | pci_remove_resource_files(pdev); | |
1143 | return retval; | |
1da177e4 LT |
1144 | } |
1145 | } | |
b19441af | 1146 | return 0; |
1da177e4 LT |
1147 | } |
1148 | #else /* !HAVE_PCI_MMAP */ | |
10a0ef39 IK |
1149 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } |
1150 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } | |
1da177e4 LT |
1151 | #endif /* HAVE_PCI_MMAP */ |
1152 | ||
1153 | /** | |
1154 | * pci_write_rom - used to enable access to the PCI ROM display | |
2c3c8bea | 1155 | * @filp: sysfs file |
1da177e4 | 1156 | * @kobj: kernel object handle |
cffb2faf | 1157 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1158 | * @buf: user input |
1159 | * @off: file offset | |
1160 | * @count: number of byte in input | |
1161 | * | |
1162 | * writing anything except 0 enables it | |
1163 | */ | |
1164 | static ssize_t | |
2c3c8bea CW |
1165 | pci_write_rom(struct file *filp, struct kobject *kobj, |
1166 | struct bin_attribute *bin_attr, | |
91a69029 | 1167 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1168 | { |
1169 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1170 | ||
1171 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
1172 | pdev->rom_attr_enabled = 0; | |
1173 | else | |
1174 | pdev->rom_attr_enabled = 1; | |
1175 | ||
1176 | return count; | |
1177 | } | |
1178 | ||
1179 | /** | |
1180 | * pci_read_rom - read a PCI ROM | |
2c3c8bea | 1181 | * @filp: sysfs file |
1da177e4 | 1182 | * @kobj: kernel object handle |
cffb2faf | 1183 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1184 | * @buf: where to put the data we read from the ROM |
1185 | * @off: file offset | |
1186 | * @count: number of bytes to read | |
1187 | * | |
1188 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
1189 | * device corresponding to @kobj. | |
1190 | */ | |
1191 | static ssize_t | |
2c3c8bea CW |
1192 | pci_read_rom(struct file *filp, struct kobject *kobj, |
1193 | struct bin_attribute *bin_attr, | |
91a69029 | 1194 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1195 | { |
1196 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1197 | void __iomem *rom; | |
1198 | size_t size; | |
1199 | ||
1200 | if (!pdev->rom_attr_enabled) | |
1201 | return -EINVAL; | |
1202 | ||
1203 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ | |
97c44836 TN |
1204 | if (!rom || !size) |
1205 | return -EIO; | |
1da177e4 LT |
1206 | |
1207 | if (off >= size) | |
1208 | count = 0; | |
1209 | else { | |
1210 | if (off + count > size) | |
1211 | count = size - off; | |
1212 | ||
1213 | memcpy_fromio(buf, rom + off, count); | |
1214 | } | |
1215 | pci_unmap_rom(pdev, rom); | |
1216 | ||
1217 | return count; | |
1218 | } | |
1219 | ||
1220 | static struct bin_attribute pci_config_attr = { | |
1221 | .attr = { | |
1222 | .name = "config", | |
1223 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1224 | }, |
557848c3 | 1225 | .size = PCI_CFG_SPACE_SIZE, |
1da177e4 LT |
1226 | .read = pci_read_config, |
1227 | .write = pci_write_config, | |
1228 | }; | |
1229 | ||
1230 | static struct bin_attribute pcie_config_attr = { | |
1231 | .attr = { | |
1232 | .name = "config", | |
1233 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1234 | }, |
557848c3 | 1235 | .size = PCI_CFG_SPACE_EXP_SIZE, |
1da177e4 LT |
1236 | .read = pci_read_config, |
1237 | .write = pci_write_config, | |
1238 | }; | |
1239 | ||
d6d88c83 | 1240 | int __weak pcibios_add_platform_entries(struct pci_dev *dev) |
575e3348 | 1241 | { |
a2cd52ca | 1242 | return 0; |
575e3348 ME |
1243 | } |
1244 | ||
711d5779 MT |
1245 | static ssize_t reset_store(struct device *dev, |
1246 | struct device_attribute *attr, const char *buf, | |
1247 | size_t count) | |
1248 | { | |
1249 | struct pci_dev *pdev = to_pci_dev(dev); | |
1250 | unsigned long val; | |
9a994e8e | 1251 | ssize_t result = kstrtoul(buf, 0, &val); |
711d5779 MT |
1252 | |
1253 | if (result < 0) | |
1254 | return result; | |
1255 | ||
1256 | if (val != 1) | |
1257 | return -EINVAL; | |
447c5dd7 MS |
1258 | |
1259 | result = pci_reset_function(pdev); | |
1260 | if (result < 0) | |
1261 | return result; | |
1262 | ||
1263 | return count; | |
711d5779 MT |
1264 | } |
1265 | ||
1266 | static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store); | |
1267 | ||
280c73d3 ZY |
1268 | static int pci_create_capabilities_sysfs(struct pci_dev *dev) |
1269 | { | |
1270 | int retval; | |
1271 | struct bin_attribute *attr; | |
1272 | ||
1273 | /* If the device has VPD, try to expose it in sysfs. */ | |
1274 | if (dev->vpd) { | |
1275 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); | |
1276 | if (!attr) | |
1277 | return -ENOMEM; | |
1278 | ||
a07e4156 | 1279 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1280 | attr->size = dev->vpd->len; |
1281 | attr->attr.name = "vpd"; | |
1282 | attr->attr.mode = S_IRUSR | S_IWUSR; | |
287d19ce SH |
1283 | attr->read = read_vpd_attr; |
1284 | attr->write = write_vpd_attr; | |
280c73d3 ZY |
1285 | retval = sysfs_create_bin_file(&dev->dev.kobj, attr); |
1286 | if (retval) { | |
0f12a4e2 | 1287 | kfree(attr); |
280c73d3 ZY |
1288 | return retval; |
1289 | } | |
1290 | dev->vpd->attr = attr; | |
1291 | } | |
1292 | ||
1293 | /* Active State Power Management */ | |
1294 | pcie_aspm_create_sysfs_dev_files(dev); | |
1295 | ||
711d5779 MT |
1296 | if (!pci_probe_reset_function(dev)) { |
1297 | retval = device_create_file(&dev->dev, &reset_attr); | |
1298 | if (retval) | |
1299 | goto error; | |
1300 | dev->reset_fn = 1; | |
1301 | } | |
280c73d3 | 1302 | return 0; |
711d5779 MT |
1303 | |
1304 | error: | |
1305 | pcie_aspm_remove_sysfs_dev_files(dev); | |
1306 | if (dev->vpd && dev->vpd->attr) { | |
1307 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1308 | kfree(dev->vpd->attr); | |
1309 | } | |
1310 | ||
1311 | return retval; | |
280c73d3 ZY |
1312 | } |
1313 | ||
b19441af | 1314 | int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev) |
1da177e4 | 1315 | { |
b19441af | 1316 | int retval; |
280c73d3 ZY |
1317 | int rom_size = 0; |
1318 | struct bin_attribute *attr; | |
b19441af | 1319 | |
1da177e4 LT |
1320 | if (!sysfs_initialized) |
1321 | return -EACCES; | |
1322 | ||
557848c3 | 1323 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af | 1324 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1da177e4 | 1325 | else |
b19441af GKH |
1326 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
1327 | if (retval) | |
1328 | goto err; | |
1da177e4 | 1329 | |
b19441af GKH |
1330 | retval = pci_create_resource_files(pdev); |
1331 | if (retval) | |
280c73d3 ZY |
1332 | goto err_config_file; |
1333 | ||
1334 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) | |
1335 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1336 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1337 | rom_size = 0x20000; | |
1da177e4 LT |
1338 | |
1339 | /* If the device has a ROM, try to expose it in sysfs. */ | |
280c73d3 | 1340 | if (rom_size) { |
94e61088 | 1341 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); |
280c73d3 | 1342 | if (!attr) { |
b19441af | 1343 | retval = -ENOMEM; |
9890b12a | 1344 | goto err_resource_files; |
1da177e4 | 1345 | } |
a07e4156 | 1346 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1347 | attr->size = rom_size; |
1348 | attr->attr.name = "rom"; | |
ff29530e | 1349 | attr->attr.mode = S_IRUSR | S_IWUSR; |
280c73d3 ZY |
1350 | attr->read = pci_read_rom; |
1351 | attr->write = pci_write_rom; | |
1352 | retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); | |
1353 | if (retval) { | |
1354 | kfree(attr); | |
1355 | goto err_resource_files; | |
1356 | } | |
1357 | pdev->rom_attr = attr; | |
1da177e4 | 1358 | } |
280c73d3 | 1359 | |
1da177e4 | 1360 | /* add platform-specific attributes */ |
280c73d3 ZY |
1361 | retval = pcibios_add_platform_entries(pdev); |
1362 | if (retval) | |
625e1d59 | 1363 | goto err_rom_file; |
b19441af | 1364 | |
280c73d3 ZY |
1365 | /* add sysfs entries for various capabilities */ |
1366 | retval = pci_create_capabilities_sysfs(pdev); | |
1367 | if (retval) | |
625e1d59 | 1368 | goto err_rom_file; |
7d715a6c | 1369 | |
911e1c9b N |
1370 | pci_create_firmware_label_files(pdev); |
1371 | ||
1da177e4 | 1372 | return 0; |
b19441af | 1373 | |
a2cd52ca | 1374 | err_rom_file: |
280c73d3 | 1375 | if (rom_size) { |
94e61088 | 1376 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
280c73d3 ZY |
1377 | kfree(pdev->rom_attr); |
1378 | pdev->rom_attr = NULL; | |
1379 | } | |
9890b12a ME |
1380 | err_resource_files: |
1381 | pci_remove_resource_files(pdev); | |
94e61088 | 1382 | err_config_file: |
557848c3 | 1383 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af GKH |
1384 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1385 | else | |
1386 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1387 | err: | |
1388 | return retval; | |
1da177e4 LT |
1389 | } |
1390 | ||
280c73d3 ZY |
1391 | static void pci_remove_capabilities_sysfs(struct pci_dev *dev) |
1392 | { | |
1393 | if (dev->vpd && dev->vpd->attr) { | |
1394 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1395 | kfree(dev->vpd->attr); | |
1396 | } | |
1397 | ||
1398 | pcie_aspm_remove_sysfs_dev_files(dev); | |
711d5779 MT |
1399 | if (dev->reset_fn) { |
1400 | device_remove_file(&dev->dev, &reset_attr); | |
1401 | dev->reset_fn = 0; | |
1402 | } | |
280c73d3 ZY |
1403 | } |
1404 | ||
1da177e4 LT |
1405 | /** |
1406 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
1407 | * @pdev: device whose entries we should free | |
1408 | * | |
1409 | * Cleanup when @pdev is removed from sysfs. | |
1410 | */ | |
1411 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
1412 | { | |
280c73d3 ZY |
1413 | int rom_size = 0; |
1414 | ||
d67afe5e DM |
1415 | if (!sysfs_initialized) |
1416 | return; | |
1417 | ||
280c73d3 | 1418 | pci_remove_capabilities_sysfs(pdev); |
7d715a6c | 1419 | |
557848c3 | 1420 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
1da177e4 LT |
1421 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1422 | else | |
1423 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1424 | ||
1425 | pci_remove_resource_files(pdev); | |
1426 | ||
280c73d3 ZY |
1427 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) |
1428 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1429 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1430 | rom_size = 0x20000; | |
1431 | ||
1432 | if (rom_size && pdev->rom_attr) { | |
1433 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); | |
1434 | kfree(pdev->rom_attr); | |
1da177e4 | 1435 | } |
911e1c9b N |
1436 | |
1437 | pci_remove_firmware_label_files(pdev); | |
1438 | ||
1da177e4 LT |
1439 | } |
1440 | ||
1441 | static int __init pci_sysfs_init(void) | |
1442 | { | |
1443 | struct pci_dev *pdev = NULL; | |
b19441af GKH |
1444 | int retval; |
1445 | ||
1da177e4 | 1446 | sysfs_initialized = 1; |
b19441af GKH |
1447 | for_each_pci_dev(pdev) { |
1448 | retval = pci_create_sysfs_dev_files(pdev); | |
151fc5df JL |
1449 | if (retval) { |
1450 | pci_dev_put(pdev); | |
b19441af | 1451 | return retval; |
151fc5df | 1452 | } |
b19441af | 1453 | } |
1da177e4 LT |
1454 | |
1455 | return 0; | |
1456 | } | |
1457 | ||
40ee9e9f | 1458 | late_initcall(pci_sysfs_init); |
4e15c46b YL |
1459 | |
1460 | static struct attribute *pci_dev_dev_attrs[] = { | |
625e1d59 | 1461 | &vga_attr.attr, |
4e15c46b YL |
1462 | NULL, |
1463 | }; | |
1464 | ||
1465 | static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, | |
1466 | struct attribute *a, int n) | |
1467 | { | |
625e1d59 YL |
1468 | struct device *dev = container_of(kobj, struct device, kobj); |
1469 | struct pci_dev *pdev = to_pci_dev(dev); | |
1470 | ||
1471 | if (a == &vga_attr.attr) | |
1472 | if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1473 | return 0; | |
1474 | ||
4e15c46b YL |
1475 | return a->mode; |
1476 | } | |
1477 | ||
dfab88be JL |
1478 | static struct attribute *pci_dev_hp_attrs[] = { |
1479 | &dev_remove_attr.attr, | |
1480 | &dev_rescan_attr.attr, | |
1481 | NULL, | |
1482 | }; | |
1483 | ||
1484 | static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, | |
1485 | struct attribute *a, int n) | |
1486 | { | |
1487 | struct device *dev = container_of(kobj, struct device, kobj); | |
1488 | struct pci_dev *pdev = to_pci_dev(dev); | |
1489 | ||
1490 | if (pdev->is_virtfn) | |
1491 | return 0; | |
1492 | ||
1493 | return a->mode; | |
1494 | } | |
1495 | ||
1496 | static struct attribute_group pci_dev_hp_attr_group = { | |
1497 | .attrs = pci_dev_hp_attrs, | |
1498 | .is_visible = pci_dev_hp_attrs_are_visible, | |
1499 | }; | |
1500 | ||
1789382a DD |
1501 | #ifdef CONFIG_PCI_IOV |
1502 | static struct attribute *sriov_dev_attrs[] = { | |
1503 | &sriov_totalvfs_attr.attr, | |
1504 | &sriov_numvfs_attr.attr, | |
1505 | NULL, | |
1506 | }; | |
1507 | ||
1508 | static umode_t sriov_attrs_are_visible(struct kobject *kobj, | |
1509 | struct attribute *a, int n) | |
1510 | { | |
1511 | struct device *dev = container_of(kobj, struct device, kobj); | |
1512 | ||
1513 | if (!dev_is_pf(dev)) | |
1514 | return 0; | |
1515 | ||
1516 | return a->mode; | |
1517 | } | |
1518 | ||
1519 | static struct attribute_group sriov_dev_attr_group = { | |
1520 | .attrs = sriov_dev_attrs, | |
1521 | .is_visible = sriov_attrs_are_visible, | |
1522 | }; | |
1523 | #endif /* CONFIG_PCI_IOV */ | |
1524 | ||
4e15c46b YL |
1525 | static struct attribute_group pci_dev_attr_group = { |
1526 | .attrs = pci_dev_dev_attrs, | |
1527 | .is_visible = pci_dev_attrs_are_visible, | |
1528 | }; | |
1529 | ||
1530 | static const struct attribute_group *pci_dev_attr_groups[] = { | |
1531 | &pci_dev_attr_group, | |
dfab88be | 1532 | &pci_dev_hp_attr_group, |
1789382a DD |
1533 | #ifdef CONFIG_PCI_IOV |
1534 | &sriov_dev_attr_group, | |
1535 | #endif | |
4e15c46b YL |
1536 | NULL, |
1537 | }; | |
1538 | ||
1539 | struct device_type pci_dev_type = { | |
1540 | .groups = pci_dev_attr_groups, | |
1541 | }; |