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 | ||
134 | static inline ssize_t pci_bus_show_cpumaskaffinity(struct device *dev, | |
135 | struct device_attribute *attr, | |
136 | char *buf) | |
137 | { | |
138 | return pci_bus_show_cpuaffinity(dev, 0, attr, buf); | |
139 | } | |
140 | ||
141 | static inline ssize_t pci_bus_show_cpulistaffinity(struct device *dev, | |
142 | struct device_attribute *attr, | |
143 | char *buf) | |
144 | { | |
145 | return pci_bus_show_cpuaffinity(dev, 1, attr, buf); | |
146 | } | |
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 | } | |
382 | ||
448bd857 HY |
383 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
384 | static ssize_t d3cold_allowed_store(struct device *dev, | |
385 | struct device_attribute *attr, | |
386 | const char *buf, size_t count) | |
387 | { | |
388 | struct pci_dev *pdev = to_pci_dev(dev); | |
389 | unsigned long val; | |
390 | ||
9a994e8e | 391 | if (kstrtoul(buf, 0, &val) < 0) |
448bd857 HY |
392 | return -EINVAL; |
393 | ||
394 | pdev->d3cold_allowed = !!val; | |
395 | pm_runtime_resume(dev); | |
396 | ||
397 | return count; | |
398 | } | |
399 | ||
400 | static ssize_t d3cold_allowed_show(struct device *dev, | |
401 | struct device_attribute *attr, char *buf) | |
402 | { | |
403 | struct pci_dev *pdev = to_pci_dev(dev); | |
404 | return sprintf (buf, "%u\n", pdev->d3cold_allowed); | |
405 | } | |
406 | #endif | |
407 | ||
1789382a DD |
408 | #ifdef CONFIG_PCI_IOV |
409 | static ssize_t sriov_totalvfs_show(struct device *dev, | |
410 | struct device_attribute *attr, | |
411 | char *buf) | |
412 | { | |
413 | struct pci_dev *pdev = to_pci_dev(dev); | |
414 | ||
bff73156 | 415 | return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); |
1789382a DD |
416 | } |
417 | ||
418 | ||
419 | static ssize_t sriov_numvfs_show(struct device *dev, | |
420 | struct device_attribute *attr, | |
421 | char *buf) | |
422 | { | |
423 | struct pci_dev *pdev = to_pci_dev(dev); | |
424 | ||
6b136724 | 425 | return sprintf(buf, "%u\n", pdev->sriov->num_VFs); |
1789382a DD |
426 | } |
427 | ||
428 | /* | |
faa48a50 BH |
429 | * num_vfs > 0; number of VFs to enable |
430 | * num_vfs = 0; disable all VFs | |
1789382a DD |
431 | * |
432 | * Note: SRIOV spec doesn't allow partial VF | |
faa48a50 | 433 | * disable, so it's all or none. |
1789382a DD |
434 | */ |
435 | static ssize_t sriov_numvfs_store(struct device *dev, | |
436 | struct device_attribute *attr, | |
437 | const char *buf, size_t count) | |
438 | { | |
439 | struct pci_dev *pdev = to_pci_dev(dev); | |
faa48a50 BH |
440 | int ret; |
441 | u16 num_vfs; | |
1789382a | 442 | |
faa48a50 BH |
443 | ret = kstrtou16(buf, 0, &num_vfs); |
444 | if (ret < 0) | |
445 | return ret; | |
446 | ||
447 | if (num_vfs > pci_sriov_get_totalvfs(pdev)) | |
448 | return -ERANGE; | |
449 | ||
450 | if (num_vfs == pdev->sriov->num_VFs) | |
451 | return count; /* no change */ | |
1789382a DD |
452 | |
453 | /* is PF driver loaded w/callback */ | |
454 | if (!pdev->driver || !pdev->driver->sriov_configure) { | |
faa48a50 | 455 | dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n"); |
1789382a DD |
456 | return -ENOSYS; |
457 | } | |
458 | ||
faa48a50 BH |
459 | if (num_vfs == 0) { |
460 | /* disable VFs */ | |
461 | ret = pdev->driver->sriov_configure(pdev, 0); | |
462 | if (ret < 0) | |
463 | return ret; | |
464 | return count; | |
1789382a DD |
465 | } |
466 | ||
faa48a50 BH |
467 | /* enable VFs */ |
468 | if (pdev->sriov->num_VFs) { | |
469 | dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n", | |
470 | pdev->sriov->num_VFs, num_vfs); | |
471 | return -EBUSY; | |
1789382a DD |
472 | } |
473 | ||
faa48a50 BH |
474 | ret = pdev->driver->sriov_configure(pdev, num_vfs); |
475 | if (ret < 0) | |
476 | return ret; | |
1789382a | 477 | |
faa48a50 BH |
478 | if (ret != num_vfs) |
479 | dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n", | |
480 | num_vfs, ret); | |
481 | ||
482 | return count; | |
1789382a DD |
483 | } |
484 | ||
485 | static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); | |
486 | static struct device_attribute sriov_numvfs_attr = | |
487 | __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), | |
488 | sriov_numvfs_show, sriov_numvfs_store); | |
489 | #endif /* CONFIG_PCI_IOV */ | |
490 | ||
1da177e4 LT |
491 | struct device_attribute pci_dev_attrs[] = { |
492 | __ATTR_RO(resource), | |
493 | __ATTR_RO(vendor), | |
494 | __ATTR_RO(device), | |
495 | __ATTR_RO(subsystem_vendor), | |
496 | __ATTR_RO(subsystem_device), | |
497 | __ATTR_RO(class), | |
498 | __ATTR_RO(irq), | |
499 | __ATTR_RO(local_cpus), | |
39106dcf | 500 | __ATTR_RO(local_cpulist), |
9888549e | 501 | __ATTR_RO(modalias), |
81bb0e19 BG |
502 | #ifdef CONFIG_NUMA |
503 | __ATTR_RO(numa_node), | |
504 | #endif | |
bb965401 YL |
505 | __ATTR_RO(dma_mask_bits), |
506 | __ATTR_RO(consistent_dma_mask_bits), | |
9f125d30 | 507 | __ATTR(enable, 0600, is_enabled_show, is_enabled_store), |
bdee9d98 DT |
508 | __ATTR(broken_parity_status,(S_IRUGO|S_IWUSR), |
509 | broken_parity_status_show,broken_parity_status_store), | |
fe97064c | 510 | __ATTR(msi_bus, 0644, msi_bus_show, msi_bus_store), |
448bd857 HY |
511 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
512 | __ATTR(d3cold_allowed, 0644, d3cold_allowed_show, d3cold_allowed_store), | |
77c27c7b | 513 | #endif |
1da177e4 LT |
514 | __ATTR_NULL, |
515 | }; | |
516 | ||
b9d320fc | 517 | struct device_attribute pcibus_dev_attrs[] = { |
b9d320fc | 518 | __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store), |
dc2c2c9d YL |
519 | __ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpumaskaffinity, NULL), |
520 | __ATTR(cpulistaffinity, S_IRUGO, pci_bus_show_cpulistaffinity, NULL), | |
b9d320fc YL |
521 | __ATTR_NULL, |
522 | }; | |
523 | ||
217f45de DA |
524 | static ssize_t |
525 | boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf) | |
526 | { | |
527 | struct pci_dev *pdev = to_pci_dev(dev); | |
1a39b310 MG |
528 | struct pci_dev *vga_dev = vga_default_device(); |
529 | ||
530 | if (vga_dev) | |
531 | return sprintf(buf, "%u\n", (pdev == vga_dev)); | |
217f45de DA |
532 | |
533 | return sprintf(buf, "%u\n", | |
534 | !!(pdev->resource[PCI_ROM_RESOURCE].flags & | |
535 | IORESOURCE_ROM_SHADOW)); | |
536 | } | |
537 | struct device_attribute vga_attr = __ATTR_RO(boot_vga); | |
538 | ||
1da177e4 | 539 | static ssize_t |
2c3c8bea CW |
540 | pci_read_config(struct file *filp, struct kobject *kobj, |
541 | struct bin_attribute *bin_attr, | |
91a69029 | 542 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
543 | { |
544 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
545 | unsigned int size = 64; | |
546 | loff_t init_off = off; | |
4c0619ad | 547 | u8 *data = (u8*) buf; |
1da177e4 LT |
548 | |
549 | /* Several chips lock up trying to read undefined config space */ | |
b7e724d3 | 550 | if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0) { |
1da177e4 LT |
551 | size = dev->cfg_size; |
552 | } else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) { | |
553 | size = 128; | |
554 | } | |
555 | ||
556 | if (off > size) | |
557 | return 0; | |
558 | if (off + count > size) { | |
559 | size -= off; | |
560 | count = size; | |
561 | } else { | |
562 | size = count; | |
563 | } | |
564 | ||
3d8387ef HY |
565 | pci_config_pm_runtime_get(dev); |
566 | ||
4c0619ad | 567 | if ((off & 1) && size) { |
568 | u8 val; | |
e04b0ea2 | 569 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 570 | data[off - init_off] = val; |
1da177e4 | 571 | off++; |
4c0619ad | 572 | size--; |
573 | } | |
574 | ||
575 | if ((off & 3) && size > 2) { | |
576 | u16 val; | |
e04b0ea2 | 577 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 578 | data[off - init_off] = val & 0xff; |
579 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
580 | off += 2; | |
581 | size -= 2; | |
1da177e4 LT |
582 | } |
583 | ||
584 | while (size > 3) { | |
4c0619ad | 585 | u32 val; |
e04b0ea2 | 586 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad | 587 | data[off - init_off] = val & 0xff; |
588 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
589 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
590 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
591 | off += 4; |
592 | size -= 4; | |
593 | } | |
594 | ||
4c0619ad | 595 | if (size >= 2) { |
596 | u16 val; | |
e04b0ea2 | 597 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 598 | data[off - init_off] = val & 0xff; |
599 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
600 | off += 2; | |
601 | size -= 2; | |
602 | } | |
603 | ||
604 | if (size > 0) { | |
605 | u8 val; | |
e04b0ea2 | 606 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 607 | data[off - init_off] = val; |
1da177e4 LT |
608 | off++; |
609 | --size; | |
610 | } | |
611 | ||
3d8387ef HY |
612 | pci_config_pm_runtime_put(dev); |
613 | ||
1da177e4 LT |
614 | return count; |
615 | } | |
616 | ||
617 | static ssize_t | |
2c3c8bea CW |
618 | pci_write_config(struct file* filp, struct kobject *kobj, |
619 | struct bin_attribute *bin_attr, | |
91a69029 | 620 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
621 | { |
622 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
623 | unsigned int size = count; | |
624 | loff_t init_off = off; | |
4c0619ad | 625 | u8 *data = (u8*) buf; |
1da177e4 LT |
626 | |
627 | if (off > dev->cfg_size) | |
628 | return 0; | |
629 | if (off + count > dev->cfg_size) { | |
630 | size = dev->cfg_size - off; | |
631 | count = size; | |
632 | } | |
4c0619ad | 633 | |
3d8387ef HY |
634 | pci_config_pm_runtime_get(dev); |
635 | ||
4c0619ad | 636 | if ((off & 1) && size) { |
e04b0ea2 | 637 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 638 | off++; |
4c0619ad | 639 | size--; |
1da177e4 | 640 | } |
4c0619ad | 641 | |
642 | if ((off & 3) && size > 2) { | |
643 | u16 val = data[off - init_off]; | |
644 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 645 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 646 | off += 2; |
647 | size -= 2; | |
648 | } | |
1da177e4 LT |
649 | |
650 | while (size > 3) { | |
4c0619ad | 651 | u32 val = data[off - init_off]; |
652 | val |= (u32) data[off - init_off + 1] << 8; | |
653 | val |= (u32) data[off - init_off + 2] << 16; | |
654 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 655 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
656 | off += 4; |
657 | size -= 4; | |
658 | } | |
4c0619ad | 659 | |
660 | if (size >= 2) { | |
661 | u16 val = data[off - init_off]; | |
662 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 663 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 664 | off += 2; |
665 | size -= 2; | |
666 | } | |
1da177e4 | 667 | |
4c0619ad | 668 | if (size) { |
e04b0ea2 | 669 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
670 | off++; |
671 | --size; | |
672 | } | |
673 | ||
3d8387ef HY |
674 | pci_config_pm_runtime_put(dev); |
675 | ||
1da177e4 LT |
676 | return count; |
677 | } | |
678 | ||
94e61088 | 679 | static ssize_t |
2c3c8bea CW |
680 | read_vpd_attr(struct file *filp, struct kobject *kobj, |
681 | struct bin_attribute *bin_attr, | |
287d19ce | 682 | char *buf, loff_t off, size_t count) |
94e61088 BH |
683 | { |
684 | struct pci_dev *dev = | |
685 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
686 | |
687 | if (off > bin_attr->size) | |
688 | count = 0; | |
689 | else if (count > bin_attr->size - off) | |
690 | count = bin_attr->size - off; | |
94e61088 | 691 | |
287d19ce | 692 | return pci_read_vpd(dev, off, count, buf); |
94e61088 BH |
693 | } |
694 | ||
695 | static ssize_t | |
2c3c8bea CW |
696 | write_vpd_attr(struct file *filp, struct kobject *kobj, |
697 | struct bin_attribute *bin_attr, | |
287d19ce | 698 | char *buf, loff_t off, size_t count) |
94e61088 BH |
699 | { |
700 | struct pci_dev *dev = | |
701 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
702 | |
703 | if (off > bin_attr->size) | |
704 | count = 0; | |
705 | else if (count > bin_attr->size - off) | |
706 | count = bin_attr->size - off; | |
94e61088 | 707 | |
287d19ce | 708 | return pci_write_vpd(dev, off, count, buf); |
94e61088 BH |
709 | } |
710 | ||
1da177e4 LT |
711 | #ifdef HAVE_PCI_LEGACY |
712 | /** | |
713 | * pci_read_legacy_io - read byte(s) from legacy I/O port space | |
2c3c8bea | 714 | * @filp: open sysfs file |
1da177e4 | 715 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 716 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
717 | * @buf: buffer to store results |
718 | * @off: offset into legacy I/O port space | |
719 | * @count: number of bytes to read | |
720 | * | |
721 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
722 | * callback routine (pci_legacy_read). | |
723 | */ | |
f19aeb1f | 724 | static ssize_t |
2c3c8bea CW |
725 | pci_read_legacy_io(struct file *filp, struct kobject *kobj, |
726 | struct bin_attribute *bin_attr, | |
91a69029 | 727 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
728 | { |
729 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 730 | struct device, |
1da177e4 LT |
731 | kobj)); |
732 | ||
733 | /* Only support 1, 2 or 4 byte accesses */ | |
734 | if (count != 1 && count != 2 && count != 4) | |
735 | return -EINVAL; | |
736 | ||
737 | return pci_legacy_read(bus, off, (u32 *)buf, count); | |
738 | } | |
739 | ||
740 | /** | |
741 | * pci_write_legacy_io - write byte(s) to legacy I/O port space | |
2c3c8bea | 742 | * @filp: open sysfs file |
1da177e4 | 743 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 744 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
745 | * @buf: buffer containing value to be written |
746 | * @off: offset into legacy I/O port space | |
747 | * @count: number of bytes to write | |
748 | * | |
749 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
750 | * callback routine (pci_legacy_write). | |
751 | */ | |
f19aeb1f | 752 | static ssize_t |
2c3c8bea CW |
753 | pci_write_legacy_io(struct file *filp, struct kobject *kobj, |
754 | struct bin_attribute *bin_attr, | |
91a69029 | 755 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
756 | { |
757 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 758 | struct device, |
1da177e4 LT |
759 | kobj)); |
760 | /* Only support 1, 2 or 4 byte accesses */ | |
761 | if (count != 1 && count != 2 && count != 4) | |
762 | return -EINVAL; | |
763 | ||
764 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
765 | } | |
766 | ||
767 | /** | |
768 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
2c3c8bea | 769 | * @filp: open sysfs file |
1da177e4 LT |
770 | * @kobj: kobject corresponding to device to be mapped |
771 | * @attr: struct bin_attribute for this file | |
772 | * @vma: struct vm_area_struct passed to mmap | |
773 | * | |
f19aeb1f | 774 | * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap |
1da177e4 LT |
775 | * legacy memory space (first meg of bus space) into application virtual |
776 | * memory space. | |
777 | */ | |
f19aeb1f | 778 | static int |
2c3c8bea CW |
779 | pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, |
780 | struct bin_attribute *attr, | |
1da177e4 LT |
781 | struct vm_area_struct *vma) |
782 | { | |
783 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 784 | struct device, |
1da177e4 LT |
785 | kobj)); |
786 | ||
f19aeb1f BH |
787 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); |
788 | } | |
789 | ||
790 | /** | |
791 | * pci_mmap_legacy_io - map legacy PCI IO into user memory space | |
2c3c8bea | 792 | * @filp: open sysfs file |
f19aeb1f BH |
793 | * @kobj: kobject corresponding to device to be mapped |
794 | * @attr: struct bin_attribute for this file | |
795 | * @vma: struct vm_area_struct passed to mmap | |
796 | * | |
797 | * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap | |
798 | * legacy IO space (first meg of bus space) into application virtual | |
799 | * memory space. Returns -ENOSYS if the operation isn't supported | |
800 | */ | |
801 | static int | |
2c3c8bea CW |
802 | pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, |
803 | struct bin_attribute *attr, | |
f19aeb1f BH |
804 | struct vm_area_struct *vma) |
805 | { | |
806 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
807 | struct device, | |
808 | kobj)); | |
809 | ||
810 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); | |
811 | } | |
812 | ||
10a0ef39 IK |
813 | /** |
814 | * pci_adjust_legacy_attr - adjustment of legacy file attributes | |
815 | * @b: bus to create files under | |
816 | * @mmap_type: I/O port or memory | |
817 | * | |
818 | * Stub implementation. Can be overridden by arch if necessary. | |
819 | */ | |
820 | void __weak | |
821 | pci_adjust_legacy_attr(struct pci_bus *b, enum pci_mmap_state mmap_type) | |
822 | { | |
823 | return; | |
824 | } | |
825 | ||
f19aeb1f BH |
826 | /** |
827 | * pci_create_legacy_files - create legacy I/O port and memory files | |
828 | * @b: bus to create files under | |
829 | * | |
830 | * Some platforms allow access to legacy I/O port and ISA memory space on | |
831 | * a per-bus basis. This routine creates the files and ties them into | |
832 | * their associated read, write and mmap files from pci-sysfs.c | |
833 | * | |
25985edc | 834 | * On error unwind, but don't propagate the error to the caller |
f19aeb1f BH |
835 | * as it is ok to set up the PCI bus without these files. |
836 | */ | |
837 | void pci_create_legacy_files(struct pci_bus *b) | |
838 | { | |
839 | int error; | |
840 | ||
841 | b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, | |
842 | GFP_ATOMIC); | |
843 | if (!b->legacy_io) | |
844 | goto kzalloc_err; | |
845 | ||
62e877b8 | 846 | sysfs_bin_attr_init(b->legacy_io); |
f19aeb1f BH |
847 | b->legacy_io->attr.name = "legacy_io"; |
848 | b->legacy_io->size = 0xffff; | |
849 | b->legacy_io->attr.mode = S_IRUSR | S_IWUSR; | |
850 | b->legacy_io->read = pci_read_legacy_io; | |
851 | b->legacy_io->write = pci_write_legacy_io; | |
852 | b->legacy_io->mmap = pci_mmap_legacy_io; | |
10a0ef39 | 853 | pci_adjust_legacy_attr(b, pci_mmap_io); |
f19aeb1f BH |
854 | error = device_create_bin_file(&b->dev, b->legacy_io); |
855 | if (error) | |
856 | goto legacy_io_err; | |
857 | ||
858 | /* Allocated above after the legacy_io struct */ | |
859 | b->legacy_mem = b->legacy_io + 1; | |
6757eca3 | 860 | sysfs_bin_attr_init(b->legacy_mem); |
f19aeb1f BH |
861 | b->legacy_mem->attr.name = "legacy_mem"; |
862 | b->legacy_mem->size = 1024*1024; | |
863 | b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR; | |
864 | b->legacy_mem->mmap = pci_mmap_legacy_mem; | |
10a0ef39 | 865 | pci_adjust_legacy_attr(b, pci_mmap_mem); |
f19aeb1f BH |
866 | error = device_create_bin_file(&b->dev, b->legacy_mem); |
867 | if (error) | |
868 | goto legacy_mem_err; | |
869 | ||
870 | return; | |
871 | ||
872 | legacy_mem_err: | |
873 | device_remove_bin_file(&b->dev, b->legacy_io); | |
874 | legacy_io_err: | |
875 | kfree(b->legacy_io); | |
876 | b->legacy_io = NULL; | |
877 | kzalloc_err: | |
878 | printk(KERN_WARNING "pci: warning: could not create legacy I/O port " | |
879 | "and ISA memory resources to sysfs\n"); | |
880 | return; | |
881 | } | |
882 | ||
883 | void pci_remove_legacy_files(struct pci_bus *b) | |
884 | { | |
885 | if (b->legacy_io) { | |
886 | device_remove_bin_file(&b->dev, b->legacy_io); | |
887 | device_remove_bin_file(&b->dev, b->legacy_mem); | |
888 | kfree(b->legacy_io); /* both are allocated here */ | |
889 | } | |
1da177e4 LT |
890 | } |
891 | #endif /* HAVE_PCI_LEGACY */ | |
892 | ||
893 | #ifdef HAVE_PCI_MMAP | |
b5ff7df3 | 894 | |
3b519e4e MW |
895 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, |
896 | enum pci_mmap_api mmap_api) | |
b5ff7df3 | 897 | { |
3b519e4e | 898 | unsigned long nr, start, size, pci_start; |
b5ff7df3 | 899 | |
3b519e4e MW |
900 | if (pci_resource_len(pdev, resno) == 0) |
901 | return 0; | |
64b00175 | 902 | nr = vma_pages(vma); |
b5ff7df3 | 903 | start = vma->vm_pgoff; |
88e7df0b | 904 | size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; |
8c05cd08 | 905 | pci_start = (mmap_api == PCI_MMAP_PROCFS) ? |
3b519e4e MW |
906 | pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; |
907 | if (start >= pci_start && start < pci_start + size && | |
908 | start + nr <= pci_start + size) | |
b5ff7df3 | 909 | return 1; |
b5ff7df3 LT |
910 | return 0; |
911 | } | |
912 | ||
1da177e4 LT |
913 | /** |
914 | * pci_mmap_resource - map a PCI resource into user memory space | |
915 | * @kobj: kobject for mapping | |
916 | * @attr: struct bin_attribute for the file being mapped | |
917 | * @vma: struct vm_area_struct passed into the mmap | |
45aec1ae | 918 | * @write_combine: 1 for write_combine mapping |
1da177e4 LT |
919 | * |
920 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
1da177e4 LT |
921 | */ |
922 | static int | |
923 | pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, | |
45aec1ae | 924 | struct vm_area_struct *vma, int write_combine) |
1da177e4 LT |
925 | { |
926 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
927 | struct device, kobj)); | |
a3f5835a | 928 | struct resource *res = attr->private; |
1da177e4 | 929 | enum pci_mmap_state mmap_type; |
e31dd6e4 | 930 | resource_size_t start, end; |
2311b1f2 | 931 | int i; |
1da177e4 | 932 | |
2311b1f2 ME |
933 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
934 | if (res == &pdev->resource[i]) | |
935 | break; | |
936 | if (i >= PCI_ROM_RESOURCE) | |
937 | return -ENODEV; | |
938 | ||
3b519e4e MW |
939 | if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { |
940 | WARN(1, "process \"%s\" tried to map 0x%08lx bytes " | |
941 | "at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n", | |
942 | current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, | |
943 | pci_name(pdev), i, | |
e25cd062 RD |
944 | (u64)pci_resource_start(pdev, i), |
945 | (u64)pci_resource_len(pdev, i)); | |
b5ff7df3 | 946 | return -EINVAL; |
3b519e4e | 947 | } |
b5ff7df3 | 948 | |
2311b1f2 ME |
949 | /* pci_mmap_page_range() expects the same kind of entry as coming |
950 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
951 | * different from the resource itself, arch will do necessary fixup. | |
952 | */ | |
953 | pci_resource_to_user(pdev, i, res, &start, &end); | |
954 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 LT |
955 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
956 | ||
e8de1481 AV |
957 | if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start)) |
958 | return -EINVAL; | |
959 | ||
45aec1ae | 960 | return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); |
961 | } | |
962 | ||
963 | static int | |
2c3c8bea CW |
964 | pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, |
965 | struct bin_attribute *attr, | |
45aec1ae | 966 | struct vm_area_struct *vma) |
967 | { | |
968 | return pci_mmap_resource(kobj, attr, vma, 0); | |
969 | } | |
970 | ||
971 | static int | |
2c3c8bea CW |
972 | pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, |
973 | struct bin_attribute *attr, | |
45aec1ae | 974 | struct vm_area_struct *vma) |
975 | { | |
976 | return pci_mmap_resource(kobj, attr, vma, 1); | |
1da177e4 LT |
977 | } |
978 | ||
8633328b AW |
979 | static ssize_t |
980 | pci_resource_io(struct file *filp, struct kobject *kobj, | |
981 | struct bin_attribute *attr, char *buf, | |
982 | loff_t off, size_t count, bool write) | |
983 | { | |
984 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
985 | struct device, kobj)); | |
986 | struct resource *res = attr->private; | |
987 | unsigned long port = off; | |
988 | int i; | |
989 | ||
990 | for (i = 0; i < PCI_ROM_RESOURCE; i++) | |
991 | if (res == &pdev->resource[i]) | |
992 | break; | |
993 | if (i >= PCI_ROM_RESOURCE) | |
994 | return -ENODEV; | |
995 | ||
996 | port += pci_resource_start(pdev, i); | |
997 | ||
998 | if (port > pci_resource_end(pdev, i)) | |
999 | return 0; | |
1000 | ||
1001 | if (port + count - 1 > pci_resource_end(pdev, i)) | |
1002 | return -EINVAL; | |
1003 | ||
1004 | switch (count) { | |
1005 | case 1: | |
1006 | if (write) | |
1007 | outb(*(u8 *)buf, port); | |
1008 | else | |
1009 | *(u8 *)buf = inb(port); | |
1010 | return 1; | |
1011 | case 2: | |
1012 | if (write) | |
1013 | outw(*(u16 *)buf, port); | |
1014 | else | |
1015 | *(u16 *)buf = inw(port); | |
1016 | return 2; | |
1017 | case 4: | |
1018 | if (write) | |
1019 | outl(*(u32 *)buf, port); | |
1020 | else | |
1021 | *(u32 *)buf = inl(port); | |
1022 | return 4; | |
1023 | } | |
1024 | return -EINVAL; | |
1025 | } | |
1026 | ||
1027 | static ssize_t | |
1028 | pci_read_resource_io(struct file *filp, struct kobject *kobj, | |
1029 | struct bin_attribute *attr, char *buf, | |
1030 | loff_t off, size_t count) | |
1031 | { | |
1032 | return pci_resource_io(filp, kobj, attr, buf, off, count, false); | |
1033 | } | |
1034 | ||
1035 | static ssize_t | |
1036 | pci_write_resource_io(struct file *filp, struct kobject *kobj, | |
1037 | struct bin_attribute *attr, char *buf, | |
1038 | loff_t off, size_t count) | |
1039 | { | |
1040 | return pci_resource_io(filp, kobj, attr, buf, off, count, true); | |
1041 | } | |
1042 | ||
b19441af GKH |
1043 | /** |
1044 | * pci_remove_resource_files - cleanup resource files | |
cffb2faf | 1045 | * @pdev: dev to cleanup |
b19441af | 1046 | * |
cffb2faf | 1047 | * If we created resource files for @pdev, remove them from sysfs and |
b19441af GKH |
1048 | * free their resources. |
1049 | */ | |
1050 | static void | |
1051 | pci_remove_resource_files(struct pci_dev *pdev) | |
1052 | { | |
1053 | int i; | |
1054 | ||
1055 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1056 | struct bin_attribute *res_attr; | |
1057 | ||
1058 | res_attr = pdev->res_attr[i]; | |
1059 | if (res_attr) { | |
1060 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1061 | kfree(res_attr); | |
1062 | } | |
45aec1ae | 1063 | |
1064 | res_attr = pdev->res_attr_wc[i]; | |
1065 | if (res_attr) { | |
1066 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1067 | kfree(res_attr); | |
1068 | } | |
b19441af GKH |
1069 | } |
1070 | } | |
1071 | ||
45aec1ae | 1072 | static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) |
1073 | { | |
1074 | /* allocate attribute structure, piggyback attribute name */ | |
1075 | int name_len = write_combine ? 13 : 10; | |
1076 | struct bin_attribute *res_attr; | |
1077 | int retval; | |
1078 | ||
1079 | res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); | |
1080 | if (res_attr) { | |
1081 | char *res_attr_name = (char *)(res_attr + 1); | |
1082 | ||
a07e4156 | 1083 | sysfs_bin_attr_init(res_attr); |
45aec1ae | 1084 | if (write_combine) { |
1085 | pdev->res_attr_wc[num] = res_attr; | |
1086 | sprintf(res_attr_name, "resource%d_wc", num); | |
1087 | res_attr->mmap = pci_mmap_resource_wc; | |
1088 | } else { | |
1089 | pdev->res_attr[num] = res_attr; | |
1090 | sprintf(res_attr_name, "resource%d", num); | |
1091 | res_attr->mmap = pci_mmap_resource_uc; | |
1092 | } | |
8633328b AW |
1093 | if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { |
1094 | res_attr->read = pci_read_resource_io; | |
1095 | res_attr->write = pci_write_resource_io; | |
1096 | } | |
45aec1ae | 1097 | res_attr->attr.name = res_attr_name; |
1098 | res_attr->attr.mode = S_IRUSR | S_IWUSR; | |
1099 | res_attr->size = pci_resource_len(pdev, num); | |
1100 | res_attr->private = &pdev->resource[num]; | |
1101 | retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
1102 | } else | |
1103 | retval = -ENOMEM; | |
1104 | ||
1105 | return retval; | |
1106 | } | |
1107 | ||
1da177e4 LT |
1108 | /** |
1109 | * pci_create_resource_files - create resource files in sysfs for @dev | |
cffb2faf | 1110 | * @pdev: dev in question |
1da177e4 | 1111 | * |
cffb2faf | 1112 | * Walk the resources in @pdev creating files for each resource available. |
1da177e4 | 1113 | */ |
b19441af | 1114 | static int pci_create_resource_files(struct pci_dev *pdev) |
1da177e4 LT |
1115 | { |
1116 | int i; | |
b19441af | 1117 | int retval; |
1da177e4 LT |
1118 | |
1119 | /* Expose the PCI resources from this device as files */ | |
1120 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1da177e4 LT |
1121 | |
1122 | /* skip empty resources */ | |
1123 | if (!pci_resource_len(pdev, i)) | |
1124 | continue; | |
1125 | ||
45aec1ae | 1126 | retval = pci_create_attr(pdev, i, 0); |
1127 | /* for prefetchable resources, create a WC mappable file */ | |
1128 | if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) | |
1129 | retval = pci_create_attr(pdev, i, 1); | |
1130 | ||
1131 | if (retval) { | |
1132 | pci_remove_resource_files(pdev); | |
1133 | return retval; | |
1da177e4 LT |
1134 | } |
1135 | } | |
b19441af | 1136 | return 0; |
1da177e4 LT |
1137 | } |
1138 | #else /* !HAVE_PCI_MMAP */ | |
10a0ef39 IK |
1139 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } |
1140 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } | |
1da177e4 LT |
1141 | #endif /* HAVE_PCI_MMAP */ |
1142 | ||
1143 | /** | |
1144 | * pci_write_rom - used to enable access to the PCI ROM display | |
2c3c8bea | 1145 | * @filp: sysfs file |
1da177e4 | 1146 | * @kobj: kernel object handle |
cffb2faf | 1147 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1148 | * @buf: user input |
1149 | * @off: file offset | |
1150 | * @count: number of byte in input | |
1151 | * | |
1152 | * writing anything except 0 enables it | |
1153 | */ | |
1154 | static ssize_t | |
2c3c8bea CW |
1155 | pci_write_rom(struct file *filp, struct kobject *kobj, |
1156 | struct bin_attribute *bin_attr, | |
91a69029 | 1157 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1158 | { |
1159 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1160 | ||
1161 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
1162 | pdev->rom_attr_enabled = 0; | |
1163 | else | |
1164 | pdev->rom_attr_enabled = 1; | |
1165 | ||
1166 | return count; | |
1167 | } | |
1168 | ||
1169 | /** | |
1170 | * pci_read_rom - read a PCI ROM | |
2c3c8bea | 1171 | * @filp: sysfs file |
1da177e4 | 1172 | * @kobj: kernel object handle |
cffb2faf | 1173 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1174 | * @buf: where to put the data we read from the ROM |
1175 | * @off: file offset | |
1176 | * @count: number of bytes to read | |
1177 | * | |
1178 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
1179 | * device corresponding to @kobj. | |
1180 | */ | |
1181 | static ssize_t | |
2c3c8bea CW |
1182 | pci_read_rom(struct file *filp, struct kobject *kobj, |
1183 | struct bin_attribute *bin_attr, | |
91a69029 | 1184 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1185 | { |
1186 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1187 | void __iomem *rom; | |
1188 | size_t size; | |
1189 | ||
1190 | if (!pdev->rom_attr_enabled) | |
1191 | return -EINVAL; | |
1192 | ||
1193 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ | |
97c44836 TN |
1194 | if (!rom || !size) |
1195 | return -EIO; | |
1da177e4 LT |
1196 | |
1197 | if (off >= size) | |
1198 | count = 0; | |
1199 | else { | |
1200 | if (off + count > size) | |
1201 | count = size - off; | |
1202 | ||
1203 | memcpy_fromio(buf, rom + off, count); | |
1204 | } | |
1205 | pci_unmap_rom(pdev, rom); | |
1206 | ||
1207 | return count; | |
1208 | } | |
1209 | ||
1210 | static struct bin_attribute pci_config_attr = { | |
1211 | .attr = { | |
1212 | .name = "config", | |
1213 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1214 | }, |
557848c3 | 1215 | .size = PCI_CFG_SPACE_SIZE, |
1da177e4 LT |
1216 | .read = pci_read_config, |
1217 | .write = pci_write_config, | |
1218 | }; | |
1219 | ||
1220 | static struct bin_attribute pcie_config_attr = { | |
1221 | .attr = { | |
1222 | .name = "config", | |
1223 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1224 | }, |
557848c3 | 1225 | .size = PCI_CFG_SPACE_EXP_SIZE, |
1da177e4 LT |
1226 | .read = pci_read_config, |
1227 | .write = pci_write_config, | |
1228 | }; | |
1229 | ||
d6d88c83 | 1230 | int __weak pcibios_add_platform_entries(struct pci_dev *dev) |
575e3348 | 1231 | { |
a2cd52ca | 1232 | return 0; |
575e3348 ME |
1233 | } |
1234 | ||
711d5779 MT |
1235 | static ssize_t reset_store(struct device *dev, |
1236 | struct device_attribute *attr, const char *buf, | |
1237 | size_t count) | |
1238 | { | |
1239 | struct pci_dev *pdev = to_pci_dev(dev); | |
1240 | unsigned long val; | |
9a994e8e | 1241 | ssize_t result = kstrtoul(buf, 0, &val); |
711d5779 MT |
1242 | |
1243 | if (result < 0) | |
1244 | return result; | |
1245 | ||
1246 | if (val != 1) | |
1247 | return -EINVAL; | |
447c5dd7 MS |
1248 | |
1249 | result = pci_reset_function(pdev); | |
1250 | if (result < 0) | |
1251 | return result; | |
1252 | ||
1253 | return count; | |
711d5779 MT |
1254 | } |
1255 | ||
1256 | static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store); | |
1257 | ||
280c73d3 ZY |
1258 | static int pci_create_capabilities_sysfs(struct pci_dev *dev) |
1259 | { | |
1260 | int retval; | |
1261 | struct bin_attribute *attr; | |
1262 | ||
1263 | /* If the device has VPD, try to expose it in sysfs. */ | |
1264 | if (dev->vpd) { | |
1265 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); | |
1266 | if (!attr) | |
1267 | return -ENOMEM; | |
1268 | ||
a07e4156 | 1269 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1270 | attr->size = dev->vpd->len; |
1271 | attr->attr.name = "vpd"; | |
1272 | attr->attr.mode = S_IRUSR | S_IWUSR; | |
287d19ce SH |
1273 | attr->read = read_vpd_attr; |
1274 | attr->write = write_vpd_attr; | |
280c73d3 ZY |
1275 | retval = sysfs_create_bin_file(&dev->dev.kobj, attr); |
1276 | if (retval) { | |
0f12a4e2 | 1277 | kfree(attr); |
280c73d3 ZY |
1278 | return retval; |
1279 | } | |
1280 | dev->vpd->attr = attr; | |
1281 | } | |
1282 | ||
1283 | /* Active State Power Management */ | |
1284 | pcie_aspm_create_sysfs_dev_files(dev); | |
1285 | ||
711d5779 MT |
1286 | if (!pci_probe_reset_function(dev)) { |
1287 | retval = device_create_file(&dev->dev, &reset_attr); | |
1288 | if (retval) | |
1289 | goto error; | |
1290 | dev->reset_fn = 1; | |
1291 | } | |
280c73d3 | 1292 | return 0; |
711d5779 MT |
1293 | |
1294 | error: | |
1295 | pcie_aspm_remove_sysfs_dev_files(dev); | |
1296 | if (dev->vpd && dev->vpd->attr) { | |
1297 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1298 | kfree(dev->vpd->attr); | |
1299 | } | |
1300 | ||
1301 | return retval; | |
280c73d3 ZY |
1302 | } |
1303 | ||
b19441af | 1304 | int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev) |
1da177e4 | 1305 | { |
b19441af | 1306 | int retval; |
280c73d3 ZY |
1307 | int rom_size = 0; |
1308 | struct bin_attribute *attr; | |
b19441af | 1309 | |
1da177e4 LT |
1310 | if (!sysfs_initialized) |
1311 | return -EACCES; | |
1312 | ||
557848c3 | 1313 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af | 1314 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1da177e4 | 1315 | else |
b19441af GKH |
1316 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
1317 | if (retval) | |
1318 | goto err; | |
1da177e4 | 1319 | |
b19441af GKH |
1320 | retval = pci_create_resource_files(pdev); |
1321 | if (retval) | |
280c73d3 ZY |
1322 | goto err_config_file; |
1323 | ||
1324 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) | |
1325 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1326 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1327 | rom_size = 0x20000; | |
1da177e4 LT |
1328 | |
1329 | /* If the device has a ROM, try to expose it in sysfs. */ | |
280c73d3 | 1330 | if (rom_size) { |
94e61088 | 1331 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); |
280c73d3 | 1332 | if (!attr) { |
b19441af | 1333 | retval = -ENOMEM; |
9890b12a | 1334 | goto err_resource_files; |
1da177e4 | 1335 | } |
a07e4156 | 1336 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1337 | attr->size = rom_size; |
1338 | attr->attr.name = "rom"; | |
ff29530e | 1339 | attr->attr.mode = S_IRUSR | S_IWUSR; |
280c73d3 ZY |
1340 | attr->read = pci_read_rom; |
1341 | attr->write = pci_write_rom; | |
1342 | retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); | |
1343 | if (retval) { | |
1344 | kfree(attr); | |
1345 | goto err_resource_files; | |
1346 | } | |
1347 | pdev->rom_attr = attr; | |
1da177e4 | 1348 | } |
280c73d3 | 1349 | |
1da177e4 | 1350 | /* add platform-specific attributes */ |
280c73d3 ZY |
1351 | retval = pcibios_add_platform_entries(pdev); |
1352 | if (retval) | |
625e1d59 | 1353 | goto err_rom_file; |
b19441af | 1354 | |
280c73d3 ZY |
1355 | /* add sysfs entries for various capabilities */ |
1356 | retval = pci_create_capabilities_sysfs(pdev); | |
1357 | if (retval) | |
625e1d59 | 1358 | goto err_rom_file; |
7d715a6c | 1359 | |
911e1c9b N |
1360 | pci_create_firmware_label_files(pdev); |
1361 | ||
1da177e4 | 1362 | return 0; |
b19441af | 1363 | |
a2cd52ca | 1364 | err_rom_file: |
280c73d3 | 1365 | if (rom_size) { |
94e61088 | 1366 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
280c73d3 ZY |
1367 | kfree(pdev->rom_attr); |
1368 | pdev->rom_attr = NULL; | |
1369 | } | |
9890b12a ME |
1370 | err_resource_files: |
1371 | pci_remove_resource_files(pdev); | |
94e61088 | 1372 | err_config_file: |
557848c3 | 1373 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af GKH |
1374 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1375 | else | |
1376 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1377 | err: | |
1378 | return retval; | |
1da177e4 LT |
1379 | } |
1380 | ||
280c73d3 ZY |
1381 | static void pci_remove_capabilities_sysfs(struct pci_dev *dev) |
1382 | { | |
1383 | if (dev->vpd && dev->vpd->attr) { | |
1384 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1385 | kfree(dev->vpd->attr); | |
1386 | } | |
1387 | ||
1388 | pcie_aspm_remove_sysfs_dev_files(dev); | |
711d5779 MT |
1389 | if (dev->reset_fn) { |
1390 | device_remove_file(&dev->dev, &reset_attr); | |
1391 | dev->reset_fn = 0; | |
1392 | } | |
280c73d3 ZY |
1393 | } |
1394 | ||
1da177e4 LT |
1395 | /** |
1396 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
1397 | * @pdev: device whose entries we should free | |
1398 | * | |
1399 | * Cleanup when @pdev is removed from sysfs. | |
1400 | */ | |
1401 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
1402 | { | |
280c73d3 ZY |
1403 | int rom_size = 0; |
1404 | ||
d67afe5e DM |
1405 | if (!sysfs_initialized) |
1406 | return; | |
1407 | ||
280c73d3 | 1408 | pci_remove_capabilities_sysfs(pdev); |
7d715a6c | 1409 | |
557848c3 | 1410 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
1da177e4 LT |
1411 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1412 | else | |
1413 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1414 | ||
1415 | pci_remove_resource_files(pdev); | |
1416 | ||
280c73d3 ZY |
1417 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) |
1418 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1419 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1420 | rom_size = 0x20000; | |
1421 | ||
1422 | if (rom_size && pdev->rom_attr) { | |
1423 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); | |
1424 | kfree(pdev->rom_attr); | |
1da177e4 | 1425 | } |
911e1c9b N |
1426 | |
1427 | pci_remove_firmware_label_files(pdev); | |
1428 | ||
1da177e4 LT |
1429 | } |
1430 | ||
1431 | static int __init pci_sysfs_init(void) | |
1432 | { | |
1433 | struct pci_dev *pdev = NULL; | |
b19441af GKH |
1434 | int retval; |
1435 | ||
1da177e4 | 1436 | sysfs_initialized = 1; |
b19441af GKH |
1437 | for_each_pci_dev(pdev) { |
1438 | retval = pci_create_sysfs_dev_files(pdev); | |
151fc5df JL |
1439 | if (retval) { |
1440 | pci_dev_put(pdev); | |
b19441af | 1441 | return retval; |
151fc5df | 1442 | } |
b19441af | 1443 | } |
1da177e4 LT |
1444 | |
1445 | return 0; | |
1446 | } | |
1447 | ||
40ee9e9f | 1448 | late_initcall(pci_sysfs_init); |
4e15c46b YL |
1449 | |
1450 | static struct attribute *pci_dev_dev_attrs[] = { | |
625e1d59 | 1451 | &vga_attr.attr, |
4e15c46b YL |
1452 | NULL, |
1453 | }; | |
1454 | ||
1455 | static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, | |
1456 | struct attribute *a, int n) | |
1457 | { | |
625e1d59 YL |
1458 | struct device *dev = container_of(kobj, struct device, kobj); |
1459 | struct pci_dev *pdev = to_pci_dev(dev); | |
1460 | ||
1461 | if (a == &vga_attr.attr) | |
1462 | if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1463 | return 0; | |
1464 | ||
4e15c46b YL |
1465 | return a->mode; |
1466 | } | |
1467 | ||
dfab88be JL |
1468 | static struct attribute *pci_dev_hp_attrs[] = { |
1469 | &dev_remove_attr.attr, | |
1470 | &dev_rescan_attr.attr, | |
1471 | NULL, | |
1472 | }; | |
1473 | ||
1474 | static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, | |
1475 | struct attribute *a, int n) | |
1476 | { | |
1477 | struct device *dev = container_of(kobj, struct device, kobj); | |
1478 | struct pci_dev *pdev = to_pci_dev(dev); | |
1479 | ||
1480 | if (pdev->is_virtfn) | |
1481 | return 0; | |
1482 | ||
1483 | return a->mode; | |
1484 | } | |
1485 | ||
1486 | static struct attribute_group pci_dev_hp_attr_group = { | |
1487 | .attrs = pci_dev_hp_attrs, | |
1488 | .is_visible = pci_dev_hp_attrs_are_visible, | |
1489 | }; | |
1490 | ||
1789382a DD |
1491 | #ifdef CONFIG_PCI_IOV |
1492 | static struct attribute *sriov_dev_attrs[] = { | |
1493 | &sriov_totalvfs_attr.attr, | |
1494 | &sriov_numvfs_attr.attr, | |
1495 | NULL, | |
1496 | }; | |
1497 | ||
1498 | static umode_t sriov_attrs_are_visible(struct kobject *kobj, | |
1499 | struct attribute *a, int n) | |
1500 | { | |
1501 | struct device *dev = container_of(kobj, struct device, kobj); | |
1502 | ||
1503 | if (!dev_is_pf(dev)) | |
1504 | return 0; | |
1505 | ||
1506 | return a->mode; | |
1507 | } | |
1508 | ||
1509 | static struct attribute_group sriov_dev_attr_group = { | |
1510 | .attrs = sriov_dev_attrs, | |
1511 | .is_visible = sriov_attrs_are_visible, | |
1512 | }; | |
1513 | #endif /* CONFIG_PCI_IOV */ | |
1514 | ||
4e15c46b YL |
1515 | static struct attribute_group pci_dev_attr_group = { |
1516 | .attrs = pci_dev_dev_attrs, | |
1517 | .is_visible = pci_dev_attrs_are_visible, | |
1518 | }; | |
1519 | ||
1520 | static const struct attribute_group *pci_dev_attr_groups[] = { | |
1521 | &pci_dev_attr_group, | |
dfab88be | 1522 | &pci_dev_hp_attr_group, |
1789382a DD |
1523 | #ifdef CONFIG_PCI_IOV |
1524 | &sriov_dev_attr_group, | |
1525 | #endif | |
4e15c46b YL |
1526 | NULL, |
1527 | }; | |
1528 | ||
1529 | struct device_type pci_dev_type = { | |
1530 | .groups = pci_dev_attr_groups, | |
1531 | }; |