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 | |
92425a40 TP |
69 | if (strict_strtoul(buf, 0, &val) < 0) |
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 TP |
190 | unsigned long val; |
191 | ssize_t result = strict_strtoul(buf, 0, &val); | |
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 | ||
262 | if (strict_strtoul(buf, 0, &val) < 0) | |
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 | #ifdef CONFIG_HOTPLUG |
288 | static DEFINE_MUTEX(pci_remove_rescan_mutex); | |
289 | static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf, | |
290 | size_t count) | |
291 | { | |
292 | unsigned long val; | |
293 | struct pci_bus *b = NULL; | |
294 | ||
295 | if (strict_strtoul(buf, 0, &val) < 0) | |
296 | return -EINVAL; | |
297 | ||
298 | if (val) { | |
299 | mutex_lock(&pci_remove_rescan_mutex); | |
300 | while ((b = pci_find_next_bus(b)) != NULL) | |
301 | pci_rescan_bus(b); | |
302 | mutex_unlock(&pci_remove_rescan_mutex); | |
303 | } | |
304 | return count; | |
305 | } | |
306 | ||
307 | struct bus_attribute pci_bus_attrs[] = { | |
308 | __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store), | |
309 | __ATTR_NULL | |
310 | }; | |
77c27c7b | 311 | |
738a6396 AC |
312 | static ssize_t |
313 | dev_rescan_store(struct device *dev, struct device_attribute *attr, | |
314 | const char *buf, size_t count) | |
315 | { | |
316 | unsigned long val; | |
317 | struct pci_dev *pdev = to_pci_dev(dev); | |
318 | ||
319 | if (strict_strtoul(buf, 0, &val) < 0) | |
320 | return -EINVAL; | |
321 | ||
322 | if (val) { | |
323 | mutex_lock(&pci_remove_rescan_mutex); | |
324 | pci_rescan_bus(pdev->bus); | |
325 | mutex_unlock(&pci_remove_rescan_mutex); | |
326 | } | |
327 | return count; | |
328 | } | |
329 | ||
77c27c7b AC |
330 | static void remove_callback(struct device *dev) |
331 | { | |
332 | struct pci_dev *pdev = to_pci_dev(dev); | |
333 | ||
334 | mutex_lock(&pci_remove_rescan_mutex); | |
210647af | 335 | pci_stop_and_remove_bus_device(pdev); |
77c27c7b AC |
336 | mutex_unlock(&pci_remove_rescan_mutex); |
337 | } | |
338 | ||
339 | static ssize_t | |
340 | remove_store(struct device *dev, struct device_attribute *dummy, | |
341 | const char *buf, size_t count) | |
342 | { | |
343 | int ret = 0; | |
344 | unsigned long val; | |
77c27c7b AC |
345 | |
346 | if (strict_strtoul(buf, 0, &val) < 0) | |
347 | return -EINVAL; | |
348 | ||
77c27c7b AC |
349 | /* An attribute cannot be unregistered by one of its own methods, |
350 | * so we have to use this roundabout approach. | |
351 | */ | |
352 | if (val) | |
353 | ret = device_schedule_callback(dev, remove_callback); | |
354 | if (ret) | |
355 | count = ret; | |
356 | return count; | |
357 | } | |
b9d320fc YL |
358 | |
359 | static ssize_t | |
360 | dev_bus_rescan_store(struct device *dev, struct device_attribute *attr, | |
361 | const char *buf, size_t count) | |
362 | { | |
363 | unsigned long val; | |
364 | struct pci_bus *bus = to_pci_bus(dev); | |
365 | ||
366 | if (strict_strtoul(buf, 0, &val) < 0) | |
367 | return -EINVAL; | |
368 | ||
369 | if (val) { | |
370 | mutex_lock(&pci_remove_rescan_mutex); | |
2f320521 YL |
371 | if (!pci_is_root_bus(bus) && list_empty(&bus->devices)) |
372 | pci_rescan_bus_bridge_resize(bus->self); | |
373 | else | |
374 | pci_rescan_bus(bus); | |
b9d320fc YL |
375 | mutex_unlock(&pci_remove_rescan_mutex); |
376 | } | |
377 | return count; | |
378 | } | |
379 | ||
705b1aaa AC |
380 | #endif |
381 | ||
448bd857 HY |
382 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
383 | static ssize_t d3cold_allowed_store(struct device *dev, | |
384 | struct device_attribute *attr, | |
385 | const char *buf, size_t count) | |
386 | { | |
387 | struct pci_dev *pdev = to_pci_dev(dev); | |
388 | unsigned long val; | |
389 | ||
390 | if (strict_strtoul(buf, 0, &val) < 0) | |
391 | return -EINVAL; | |
392 | ||
393 | pdev->d3cold_allowed = !!val; | |
394 | pm_runtime_resume(dev); | |
395 | ||
396 | return count; | |
397 | } | |
398 | ||
399 | static ssize_t d3cold_allowed_show(struct device *dev, | |
400 | struct device_attribute *attr, char *buf) | |
401 | { | |
402 | struct pci_dev *pdev = to_pci_dev(dev); | |
403 | return sprintf (buf, "%u\n", pdev->d3cold_allowed); | |
404 | } | |
405 | #endif | |
406 | ||
1789382a DD |
407 | #ifdef CONFIG_PCI_IOV |
408 | static ssize_t sriov_totalvfs_show(struct device *dev, | |
409 | struct device_attribute *attr, | |
410 | char *buf) | |
411 | { | |
412 | struct pci_dev *pdev = to_pci_dev(dev); | |
413 | ||
bff73156 | 414 | return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); |
1789382a DD |
415 | } |
416 | ||
417 | ||
418 | static ssize_t sriov_numvfs_show(struct device *dev, | |
419 | struct device_attribute *attr, | |
420 | char *buf) | |
421 | { | |
422 | struct pci_dev *pdev = to_pci_dev(dev); | |
423 | ||
424 | return sprintf(buf, "%u\n", pdev->sriov->nr_virtfn); | |
425 | } | |
426 | ||
427 | /* | |
428 | * num_vfs > 0; number of vfs to enable | |
429 | * num_vfs = 0; disable all vfs | |
430 | * | |
431 | * Note: SRIOV spec doesn't allow partial VF | |
432 | * disable, so its all or none. | |
433 | */ | |
434 | static ssize_t sriov_numvfs_store(struct device *dev, | |
435 | struct device_attribute *attr, | |
436 | const char *buf, size_t count) | |
437 | { | |
438 | struct pci_dev *pdev = to_pci_dev(dev); | |
439 | int num_vfs_enabled = 0; | |
440 | int num_vfs; | |
441 | int ret = 0; | |
442 | u16 total; | |
443 | ||
444 | if (kstrtoint(buf, 0, &num_vfs) < 0) | |
445 | return -EINVAL; | |
446 | ||
447 | /* is PF driver loaded w/callback */ | |
448 | if (!pdev->driver || !pdev->driver->sriov_configure) { | |
449 | dev_info(&pdev->dev, | |
450 | "Driver doesn't support SRIOV configuration via sysfs\n"); | |
451 | return -ENOSYS; | |
452 | } | |
453 | ||
454 | /* if enabling vf's ... */ | |
bff73156 | 455 | total = pci_sriov_get_totalvfs(pdev); |
1789382a DD |
456 | /* Requested VFs to enable < totalvfs and none enabled already */ |
457 | if ((num_vfs > 0) && (num_vfs <= total)) { | |
458 | if (pdev->sriov->nr_virtfn == 0) { | |
459 | num_vfs_enabled = | |
460 | pdev->driver->sriov_configure(pdev, num_vfs); | |
461 | if ((num_vfs_enabled >= 0) && | |
462 | (num_vfs_enabled != num_vfs)) { | |
463 | dev_warn(&pdev->dev, | |
464 | "Only %d VFs enabled\n", | |
465 | num_vfs_enabled); | |
466 | return count; | |
467 | } else if (num_vfs_enabled < 0) | |
468 | /* error code from driver callback */ | |
469 | return num_vfs_enabled; | |
470 | } else if (num_vfs == pdev->sriov->nr_virtfn) { | |
471 | dev_warn(&pdev->dev, | |
472 | "%d VFs already enabled; no enable action taken\n", | |
473 | num_vfs); | |
474 | return count; | |
475 | } else { | |
476 | dev_warn(&pdev->dev, | |
477 | "%d VFs already enabled. Disable before enabling %d VFs\n", | |
478 | pdev->sriov->nr_virtfn, num_vfs); | |
479 | return -EINVAL; | |
480 | } | |
481 | } | |
482 | ||
483 | /* disable vfs */ | |
484 | if (num_vfs == 0) { | |
485 | if (pdev->sriov->nr_virtfn != 0) { | |
486 | ret = pdev->driver->sriov_configure(pdev, 0); | |
487 | return ret ? ret : count; | |
488 | } else { | |
489 | dev_warn(&pdev->dev, | |
490 | "All VFs disabled; no disable action taken\n"); | |
491 | return count; | |
492 | } | |
493 | } | |
494 | ||
495 | dev_err(&pdev->dev, | |
496 | "Invalid value for number of VFs to enable: %d\n", num_vfs); | |
497 | ||
498 | return -EINVAL; | |
499 | } | |
500 | ||
501 | static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); | |
502 | static struct device_attribute sriov_numvfs_attr = | |
503 | __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), | |
504 | sriov_numvfs_show, sriov_numvfs_store); | |
505 | #endif /* CONFIG_PCI_IOV */ | |
506 | ||
1da177e4 LT |
507 | struct device_attribute pci_dev_attrs[] = { |
508 | __ATTR_RO(resource), | |
509 | __ATTR_RO(vendor), | |
510 | __ATTR_RO(device), | |
511 | __ATTR_RO(subsystem_vendor), | |
512 | __ATTR_RO(subsystem_device), | |
513 | __ATTR_RO(class), | |
514 | __ATTR_RO(irq), | |
515 | __ATTR_RO(local_cpus), | |
39106dcf | 516 | __ATTR_RO(local_cpulist), |
9888549e | 517 | __ATTR_RO(modalias), |
81bb0e19 BG |
518 | #ifdef CONFIG_NUMA |
519 | __ATTR_RO(numa_node), | |
520 | #endif | |
bb965401 YL |
521 | __ATTR_RO(dma_mask_bits), |
522 | __ATTR_RO(consistent_dma_mask_bits), | |
9f125d30 | 523 | __ATTR(enable, 0600, is_enabled_show, is_enabled_store), |
bdee9d98 DT |
524 | __ATTR(broken_parity_status,(S_IRUGO|S_IWUSR), |
525 | broken_parity_status_show,broken_parity_status_store), | |
fe97064c | 526 | __ATTR(msi_bus, 0644, msi_bus_show, msi_bus_store), |
77c27c7b AC |
527 | #ifdef CONFIG_HOTPLUG |
528 | __ATTR(remove, (S_IWUSR|S_IWGRP), NULL, remove_store), | |
738a6396 | 529 | __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_rescan_store), |
448bd857 HY |
530 | #endif |
531 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) | |
532 | __ATTR(d3cold_allowed, 0644, d3cold_allowed_show, d3cold_allowed_store), | |
77c27c7b | 533 | #endif |
1da177e4 LT |
534 | __ATTR_NULL, |
535 | }; | |
536 | ||
b9d320fc YL |
537 | struct device_attribute pcibus_dev_attrs[] = { |
538 | #ifdef CONFIG_HOTPLUG | |
539 | __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store), | |
540 | #endif | |
dc2c2c9d YL |
541 | __ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpumaskaffinity, NULL), |
542 | __ATTR(cpulistaffinity, S_IRUGO, pci_bus_show_cpulistaffinity, NULL), | |
b9d320fc YL |
543 | __ATTR_NULL, |
544 | }; | |
545 | ||
217f45de DA |
546 | static ssize_t |
547 | boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf) | |
548 | { | |
549 | struct pci_dev *pdev = to_pci_dev(dev); | |
1a39b310 MG |
550 | struct pci_dev *vga_dev = vga_default_device(); |
551 | ||
552 | if (vga_dev) | |
553 | return sprintf(buf, "%u\n", (pdev == vga_dev)); | |
217f45de DA |
554 | |
555 | return sprintf(buf, "%u\n", | |
556 | !!(pdev->resource[PCI_ROM_RESOURCE].flags & | |
557 | IORESOURCE_ROM_SHADOW)); | |
558 | } | |
559 | struct device_attribute vga_attr = __ATTR_RO(boot_vga); | |
560 | ||
3d8387ef HY |
561 | static void |
562 | pci_config_pm_runtime_get(struct pci_dev *pdev) | |
563 | { | |
564 | struct device *dev = &pdev->dev; | |
565 | struct device *parent = dev->parent; | |
566 | ||
567 | if (parent) | |
568 | pm_runtime_get_sync(parent); | |
569 | pm_runtime_get_noresume(dev); | |
570 | /* | |
571 | * pdev->current_state is set to PCI_D3cold during suspending, | |
572 | * so wait until suspending completes | |
573 | */ | |
574 | pm_runtime_barrier(dev); | |
575 | /* | |
576 | * Only need to resume devices in D3cold, because config | |
577 | * registers are still accessible for devices suspended but | |
578 | * not in D3cold. | |
579 | */ | |
580 | if (pdev->current_state == PCI_D3cold) | |
581 | pm_runtime_resume(dev); | |
582 | } | |
583 | ||
584 | static void | |
585 | pci_config_pm_runtime_put(struct pci_dev *pdev) | |
586 | { | |
587 | struct device *dev = &pdev->dev; | |
588 | struct device *parent = dev->parent; | |
589 | ||
590 | pm_runtime_put(dev); | |
591 | if (parent) | |
592 | pm_runtime_put_sync(parent); | |
593 | } | |
594 | ||
1da177e4 | 595 | static ssize_t |
2c3c8bea CW |
596 | pci_read_config(struct file *filp, struct kobject *kobj, |
597 | struct bin_attribute *bin_attr, | |
91a69029 | 598 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
599 | { |
600 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
601 | unsigned int size = 64; | |
602 | loff_t init_off = off; | |
4c0619ad | 603 | u8 *data = (u8*) buf; |
1da177e4 LT |
604 | |
605 | /* Several chips lock up trying to read undefined config space */ | |
b7e724d3 | 606 | if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0) { |
1da177e4 LT |
607 | size = dev->cfg_size; |
608 | } else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) { | |
609 | size = 128; | |
610 | } | |
611 | ||
612 | if (off > size) | |
613 | return 0; | |
614 | if (off + count > size) { | |
615 | size -= off; | |
616 | count = size; | |
617 | } else { | |
618 | size = count; | |
619 | } | |
620 | ||
3d8387ef HY |
621 | pci_config_pm_runtime_get(dev); |
622 | ||
4c0619ad | 623 | if ((off & 1) && size) { |
624 | u8 val; | |
e04b0ea2 | 625 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 626 | data[off - init_off] = val; |
1da177e4 | 627 | off++; |
4c0619ad | 628 | size--; |
629 | } | |
630 | ||
631 | if ((off & 3) && size > 2) { | |
632 | u16 val; | |
e04b0ea2 | 633 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 634 | data[off - init_off] = val & 0xff; |
635 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
636 | off += 2; | |
637 | size -= 2; | |
1da177e4 LT |
638 | } |
639 | ||
640 | while (size > 3) { | |
4c0619ad | 641 | u32 val; |
e04b0ea2 | 642 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad | 643 | data[off - init_off] = val & 0xff; |
644 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
645 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
646 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
647 | off += 4; |
648 | size -= 4; | |
649 | } | |
650 | ||
4c0619ad | 651 | if (size >= 2) { |
652 | u16 val; | |
e04b0ea2 | 653 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 654 | data[off - init_off] = val & 0xff; |
655 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
656 | off += 2; | |
657 | size -= 2; | |
658 | } | |
659 | ||
660 | if (size > 0) { | |
661 | u8 val; | |
e04b0ea2 | 662 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 663 | data[off - init_off] = val; |
1da177e4 LT |
664 | off++; |
665 | --size; | |
666 | } | |
667 | ||
3d8387ef HY |
668 | pci_config_pm_runtime_put(dev); |
669 | ||
1da177e4 LT |
670 | return count; |
671 | } | |
672 | ||
673 | static ssize_t | |
2c3c8bea CW |
674 | pci_write_config(struct file* filp, struct kobject *kobj, |
675 | struct bin_attribute *bin_attr, | |
91a69029 | 676 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
677 | { |
678 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
679 | unsigned int size = count; | |
680 | loff_t init_off = off; | |
4c0619ad | 681 | u8 *data = (u8*) buf; |
1da177e4 LT |
682 | |
683 | if (off > dev->cfg_size) | |
684 | return 0; | |
685 | if (off + count > dev->cfg_size) { | |
686 | size = dev->cfg_size - off; | |
687 | count = size; | |
688 | } | |
4c0619ad | 689 | |
3d8387ef HY |
690 | pci_config_pm_runtime_get(dev); |
691 | ||
4c0619ad | 692 | if ((off & 1) && size) { |
e04b0ea2 | 693 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 694 | off++; |
4c0619ad | 695 | size--; |
1da177e4 | 696 | } |
4c0619ad | 697 | |
698 | if ((off & 3) && size > 2) { | |
699 | u16 val = data[off - init_off]; | |
700 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 701 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 702 | off += 2; |
703 | size -= 2; | |
704 | } | |
1da177e4 LT |
705 | |
706 | while (size > 3) { | |
4c0619ad | 707 | u32 val = data[off - init_off]; |
708 | val |= (u32) data[off - init_off + 1] << 8; | |
709 | val |= (u32) data[off - init_off + 2] << 16; | |
710 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 711 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
712 | off += 4; |
713 | size -= 4; | |
714 | } | |
4c0619ad | 715 | |
716 | if (size >= 2) { | |
717 | u16 val = data[off - init_off]; | |
718 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 719 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 720 | off += 2; |
721 | size -= 2; | |
722 | } | |
1da177e4 | 723 | |
4c0619ad | 724 | if (size) { |
e04b0ea2 | 725 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
726 | off++; |
727 | --size; | |
728 | } | |
729 | ||
3d8387ef HY |
730 | pci_config_pm_runtime_put(dev); |
731 | ||
1da177e4 LT |
732 | return count; |
733 | } | |
734 | ||
94e61088 | 735 | static ssize_t |
2c3c8bea CW |
736 | read_vpd_attr(struct file *filp, struct kobject *kobj, |
737 | struct bin_attribute *bin_attr, | |
287d19ce | 738 | char *buf, loff_t off, size_t count) |
94e61088 BH |
739 | { |
740 | struct pci_dev *dev = | |
741 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
742 | |
743 | if (off > bin_attr->size) | |
744 | count = 0; | |
745 | else if (count > bin_attr->size - off) | |
746 | count = bin_attr->size - off; | |
94e61088 | 747 | |
287d19ce | 748 | return pci_read_vpd(dev, off, count, buf); |
94e61088 BH |
749 | } |
750 | ||
751 | static ssize_t | |
2c3c8bea CW |
752 | write_vpd_attr(struct file *filp, struct kobject *kobj, |
753 | struct bin_attribute *bin_attr, | |
287d19ce | 754 | char *buf, loff_t off, size_t count) |
94e61088 BH |
755 | { |
756 | struct pci_dev *dev = | |
757 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
758 | |
759 | if (off > bin_attr->size) | |
760 | count = 0; | |
761 | else if (count > bin_attr->size - off) | |
762 | count = bin_attr->size - off; | |
94e61088 | 763 | |
287d19ce | 764 | return pci_write_vpd(dev, off, count, buf); |
94e61088 BH |
765 | } |
766 | ||
1da177e4 LT |
767 | #ifdef HAVE_PCI_LEGACY |
768 | /** | |
769 | * pci_read_legacy_io - read byte(s) from legacy I/O port space | |
2c3c8bea | 770 | * @filp: open sysfs file |
1da177e4 | 771 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 772 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
773 | * @buf: buffer to store results |
774 | * @off: offset into legacy I/O port space | |
775 | * @count: number of bytes to read | |
776 | * | |
777 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
778 | * callback routine (pci_legacy_read). | |
779 | */ | |
f19aeb1f | 780 | static ssize_t |
2c3c8bea CW |
781 | pci_read_legacy_io(struct file *filp, struct kobject *kobj, |
782 | struct bin_attribute *bin_attr, | |
91a69029 | 783 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
784 | { |
785 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 786 | struct device, |
1da177e4 LT |
787 | kobj)); |
788 | ||
789 | /* Only support 1, 2 or 4 byte accesses */ | |
790 | if (count != 1 && count != 2 && count != 4) | |
791 | return -EINVAL; | |
792 | ||
793 | return pci_legacy_read(bus, off, (u32 *)buf, count); | |
794 | } | |
795 | ||
796 | /** | |
797 | * pci_write_legacy_io - write byte(s) to legacy I/O port space | |
2c3c8bea | 798 | * @filp: open sysfs file |
1da177e4 | 799 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 800 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
801 | * @buf: buffer containing value to be written |
802 | * @off: offset into legacy I/O port space | |
803 | * @count: number of bytes to write | |
804 | * | |
805 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
806 | * callback routine (pci_legacy_write). | |
807 | */ | |
f19aeb1f | 808 | static ssize_t |
2c3c8bea CW |
809 | pci_write_legacy_io(struct file *filp, struct kobject *kobj, |
810 | struct bin_attribute *bin_attr, | |
91a69029 | 811 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
812 | { |
813 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 814 | struct device, |
1da177e4 LT |
815 | kobj)); |
816 | /* Only support 1, 2 or 4 byte accesses */ | |
817 | if (count != 1 && count != 2 && count != 4) | |
818 | return -EINVAL; | |
819 | ||
820 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
821 | } | |
822 | ||
823 | /** | |
824 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
2c3c8bea | 825 | * @filp: open sysfs file |
1da177e4 LT |
826 | * @kobj: kobject corresponding to device to be mapped |
827 | * @attr: struct bin_attribute for this file | |
828 | * @vma: struct vm_area_struct passed to mmap | |
829 | * | |
f19aeb1f | 830 | * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap |
1da177e4 LT |
831 | * legacy memory space (first meg of bus space) into application virtual |
832 | * memory space. | |
833 | */ | |
f19aeb1f | 834 | static int |
2c3c8bea CW |
835 | pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, |
836 | struct bin_attribute *attr, | |
1da177e4 LT |
837 | struct vm_area_struct *vma) |
838 | { | |
839 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 840 | struct device, |
1da177e4 LT |
841 | kobj)); |
842 | ||
f19aeb1f BH |
843 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); |
844 | } | |
845 | ||
846 | /** | |
847 | * pci_mmap_legacy_io - map legacy PCI IO into user memory space | |
2c3c8bea | 848 | * @filp: open sysfs file |
f19aeb1f BH |
849 | * @kobj: kobject corresponding to device to be mapped |
850 | * @attr: struct bin_attribute for this file | |
851 | * @vma: struct vm_area_struct passed to mmap | |
852 | * | |
853 | * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap | |
854 | * legacy IO space (first meg of bus space) into application virtual | |
855 | * memory space. Returns -ENOSYS if the operation isn't supported | |
856 | */ | |
857 | static int | |
2c3c8bea CW |
858 | pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, |
859 | struct bin_attribute *attr, | |
f19aeb1f BH |
860 | struct vm_area_struct *vma) |
861 | { | |
862 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
863 | struct device, | |
864 | kobj)); | |
865 | ||
866 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); | |
867 | } | |
868 | ||
10a0ef39 IK |
869 | /** |
870 | * pci_adjust_legacy_attr - adjustment of legacy file attributes | |
871 | * @b: bus to create files under | |
872 | * @mmap_type: I/O port or memory | |
873 | * | |
874 | * Stub implementation. Can be overridden by arch if necessary. | |
875 | */ | |
876 | void __weak | |
877 | pci_adjust_legacy_attr(struct pci_bus *b, enum pci_mmap_state mmap_type) | |
878 | { | |
879 | return; | |
880 | } | |
881 | ||
f19aeb1f BH |
882 | /** |
883 | * pci_create_legacy_files - create legacy I/O port and memory files | |
884 | * @b: bus to create files under | |
885 | * | |
886 | * Some platforms allow access to legacy I/O port and ISA memory space on | |
887 | * a per-bus basis. This routine creates the files and ties them into | |
888 | * their associated read, write and mmap files from pci-sysfs.c | |
889 | * | |
25985edc | 890 | * On error unwind, but don't propagate the error to the caller |
f19aeb1f BH |
891 | * as it is ok to set up the PCI bus without these files. |
892 | */ | |
893 | void pci_create_legacy_files(struct pci_bus *b) | |
894 | { | |
895 | int error; | |
896 | ||
897 | b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, | |
898 | GFP_ATOMIC); | |
899 | if (!b->legacy_io) | |
900 | goto kzalloc_err; | |
901 | ||
62e877b8 | 902 | sysfs_bin_attr_init(b->legacy_io); |
f19aeb1f BH |
903 | b->legacy_io->attr.name = "legacy_io"; |
904 | b->legacy_io->size = 0xffff; | |
905 | b->legacy_io->attr.mode = S_IRUSR | S_IWUSR; | |
906 | b->legacy_io->read = pci_read_legacy_io; | |
907 | b->legacy_io->write = pci_write_legacy_io; | |
908 | b->legacy_io->mmap = pci_mmap_legacy_io; | |
10a0ef39 | 909 | pci_adjust_legacy_attr(b, pci_mmap_io); |
f19aeb1f BH |
910 | error = device_create_bin_file(&b->dev, b->legacy_io); |
911 | if (error) | |
912 | goto legacy_io_err; | |
913 | ||
914 | /* Allocated above after the legacy_io struct */ | |
915 | b->legacy_mem = b->legacy_io + 1; | |
6757eca3 | 916 | sysfs_bin_attr_init(b->legacy_mem); |
f19aeb1f BH |
917 | b->legacy_mem->attr.name = "legacy_mem"; |
918 | b->legacy_mem->size = 1024*1024; | |
919 | b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR; | |
920 | b->legacy_mem->mmap = pci_mmap_legacy_mem; | |
10a0ef39 | 921 | pci_adjust_legacy_attr(b, pci_mmap_mem); |
f19aeb1f BH |
922 | error = device_create_bin_file(&b->dev, b->legacy_mem); |
923 | if (error) | |
924 | goto legacy_mem_err; | |
925 | ||
926 | return; | |
927 | ||
928 | legacy_mem_err: | |
929 | device_remove_bin_file(&b->dev, b->legacy_io); | |
930 | legacy_io_err: | |
931 | kfree(b->legacy_io); | |
932 | b->legacy_io = NULL; | |
933 | kzalloc_err: | |
934 | printk(KERN_WARNING "pci: warning: could not create legacy I/O port " | |
935 | "and ISA memory resources to sysfs\n"); | |
936 | return; | |
937 | } | |
938 | ||
939 | void pci_remove_legacy_files(struct pci_bus *b) | |
940 | { | |
941 | if (b->legacy_io) { | |
942 | device_remove_bin_file(&b->dev, b->legacy_io); | |
943 | device_remove_bin_file(&b->dev, b->legacy_mem); | |
944 | kfree(b->legacy_io); /* both are allocated here */ | |
945 | } | |
1da177e4 LT |
946 | } |
947 | #endif /* HAVE_PCI_LEGACY */ | |
948 | ||
949 | #ifdef HAVE_PCI_MMAP | |
b5ff7df3 | 950 | |
3b519e4e MW |
951 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, |
952 | enum pci_mmap_api mmap_api) | |
b5ff7df3 | 953 | { |
3b519e4e | 954 | unsigned long nr, start, size, pci_start; |
b5ff7df3 | 955 | |
3b519e4e MW |
956 | if (pci_resource_len(pdev, resno) == 0) |
957 | return 0; | |
b5ff7df3 LT |
958 | nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; |
959 | start = vma->vm_pgoff; | |
88e7df0b | 960 | size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; |
8c05cd08 | 961 | pci_start = (mmap_api == PCI_MMAP_PROCFS) ? |
3b519e4e MW |
962 | pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; |
963 | if (start >= pci_start && start < pci_start + size && | |
964 | start + nr <= pci_start + size) | |
b5ff7df3 | 965 | return 1; |
b5ff7df3 LT |
966 | return 0; |
967 | } | |
968 | ||
1da177e4 LT |
969 | /** |
970 | * pci_mmap_resource - map a PCI resource into user memory space | |
971 | * @kobj: kobject for mapping | |
972 | * @attr: struct bin_attribute for the file being mapped | |
973 | * @vma: struct vm_area_struct passed into the mmap | |
45aec1ae | 974 | * @write_combine: 1 for write_combine mapping |
1da177e4 LT |
975 | * |
976 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
1da177e4 LT |
977 | */ |
978 | static int | |
979 | pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, | |
45aec1ae | 980 | struct vm_area_struct *vma, int write_combine) |
1da177e4 LT |
981 | { |
982 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
983 | struct device, kobj)); | |
a3f5835a | 984 | struct resource *res = attr->private; |
1da177e4 | 985 | enum pci_mmap_state mmap_type; |
e31dd6e4 | 986 | resource_size_t start, end; |
2311b1f2 | 987 | int i; |
1da177e4 | 988 | |
2311b1f2 ME |
989 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
990 | if (res == &pdev->resource[i]) | |
991 | break; | |
992 | if (i >= PCI_ROM_RESOURCE) | |
993 | return -ENODEV; | |
994 | ||
3b519e4e MW |
995 | if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { |
996 | WARN(1, "process \"%s\" tried to map 0x%08lx bytes " | |
997 | "at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n", | |
998 | current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, | |
999 | pci_name(pdev), i, | |
e25cd062 RD |
1000 | (u64)pci_resource_start(pdev, i), |
1001 | (u64)pci_resource_len(pdev, i)); | |
b5ff7df3 | 1002 | return -EINVAL; |
3b519e4e | 1003 | } |
b5ff7df3 | 1004 | |
2311b1f2 ME |
1005 | /* pci_mmap_page_range() expects the same kind of entry as coming |
1006 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
1007 | * different from the resource itself, arch will do necessary fixup. | |
1008 | */ | |
1009 | pci_resource_to_user(pdev, i, res, &start, &end); | |
1010 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 LT |
1011 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
1012 | ||
e8de1481 AV |
1013 | if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start)) |
1014 | return -EINVAL; | |
1015 | ||
45aec1ae | 1016 | return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); |
1017 | } | |
1018 | ||
1019 | static int | |
2c3c8bea CW |
1020 | pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, |
1021 | struct bin_attribute *attr, | |
45aec1ae | 1022 | struct vm_area_struct *vma) |
1023 | { | |
1024 | return pci_mmap_resource(kobj, attr, vma, 0); | |
1025 | } | |
1026 | ||
1027 | static int | |
2c3c8bea CW |
1028 | pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, |
1029 | struct bin_attribute *attr, | |
45aec1ae | 1030 | struct vm_area_struct *vma) |
1031 | { | |
1032 | return pci_mmap_resource(kobj, attr, vma, 1); | |
1da177e4 LT |
1033 | } |
1034 | ||
8633328b AW |
1035 | static ssize_t |
1036 | pci_resource_io(struct file *filp, struct kobject *kobj, | |
1037 | struct bin_attribute *attr, char *buf, | |
1038 | loff_t off, size_t count, bool write) | |
1039 | { | |
1040 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
1041 | struct device, kobj)); | |
1042 | struct resource *res = attr->private; | |
1043 | unsigned long port = off; | |
1044 | int i; | |
1045 | ||
1046 | for (i = 0; i < PCI_ROM_RESOURCE; i++) | |
1047 | if (res == &pdev->resource[i]) | |
1048 | break; | |
1049 | if (i >= PCI_ROM_RESOURCE) | |
1050 | return -ENODEV; | |
1051 | ||
1052 | port += pci_resource_start(pdev, i); | |
1053 | ||
1054 | if (port > pci_resource_end(pdev, i)) | |
1055 | return 0; | |
1056 | ||
1057 | if (port + count - 1 > pci_resource_end(pdev, i)) | |
1058 | return -EINVAL; | |
1059 | ||
1060 | switch (count) { | |
1061 | case 1: | |
1062 | if (write) | |
1063 | outb(*(u8 *)buf, port); | |
1064 | else | |
1065 | *(u8 *)buf = inb(port); | |
1066 | return 1; | |
1067 | case 2: | |
1068 | if (write) | |
1069 | outw(*(u16 *)buf, port); | |
1070 | else | |
1071 | *(u16 *)buf = inw(port); | |
1072 | return 2; | |
1073 | case 4: | |
1074 | if (write) | |
1075 | outl(*(u32 *)buf, port); | |
1076 | else | |
1077 | *(u32 *)buf = inl(port); | |
1078 | return 4; | |
1079 | } | |
1080 | return -EINVAL; | |
1081 | } | |
1082 | ||
1083 | static ssize_t | |
1084 | pci_read_resource_io(struct file *filp, struct kobject *kobj, | |
1085 | struct bin_attribute *attr, char *buf, | |
1086 | loff_t off, size_t count) | |
1087 | { | |
1088 | return pci_resource_io(filp, kobj, attr, buf, off, count, false); | |
1089 | } | |
1090 | ||
1091 | static ssize_t | |
1092 | pci_write_resource_io(struct file *filp, struct kobject *kobj, | |
1093 | struct bin_attribute *attr, char *buf, | |
1094 | loff_t off, size_t count) | |
1095 | { | |
1096 | return pci_resource_io(filp, kobj, attr, buf, off, count, true); | |
1097 | } | |
1098 | ||
b19441af GKH |
1099 | /** |
1100 | * pci_remove_resource_files - cleanup resource files | |
cffb2faf | 1101 | * @pdev: dev to cleanup |
b19441af | 1102 | * |
cffb2faf | 1103 | * If we created resource files for @pdev, remove them from sysfs and |
b19441af GKH |
1104 | * free their resources. |
1105 | */ | |
1106 | static void | |
1107 | pci_remove_resource_files(struct pci_dev *pdev) | |
1108 | { | |
1109 | int i; | |
1110 | ||
1111 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1112 | struct bin_attribute *res_attr; | |
1113 | ||
1114 | res_attr = pdev->res_attr[i]; | |
1115 | if (res_attr) { | |
1116 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1117 | kfree(res_attr); | |
1118 | } | |
45aec1ae | 1119 | |
1120 | res_attr = pdev->res_attr_wc[i]; | |
1121 | if (res_attr) { | |
1122 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1123 | kfree(res_attr); | |
1124 | } | |
b19441af GKH |
1125 | } |
1126 | } | |
1127 | ||
45aec1ae | 1128 | static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) |
1129 | { | |
1130 | /* allocate attribute structure, piggyback attribute name */ | |
1131 | int name_len = write_combine ? 13 : 10; | |
1132 | struct bin_attribute *res_attr; | |
1133 | int retval; | |
1134 | ||
1135 | res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); | |
1136 | if (res_attr) { | |
1137 | char *res_attr_name = (char *)(res_attr + 1); | |
1138 | ||
a07e4156 | 1139 | sysfs_bin_attr_init(res_attr); |
45aec1ae | 1140 | if (write_combine) { |
1141 | pdev->res_attr_wc[num] = res_attr; | |
1142 | sprintf(res_attr_name, "resource%d_wc", num); | |
1143 | res_attr->mmap = pci_mmap_resource_wc; | |
1144 | } else { | |
1145 | pdev->res_attr[num] = res_attr; | |
1146 | sprintf(res_attr_name, "resource%d", num); | |
1147 | res_attr->mmap = pci_mmap_resource_uc; | |
1148 | } | |
8633328b AW |
1149 | if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { |
1150 | res_attr->read = pci_read_resource_io; | |
1151 | res_attr->write = pci_write_resource_io; | |
1152 | } | |
45aec1ae | 1153 | res_attr->attr.name = res_attr_name; |
1154 | res_attr->attr.mode = S_IRUSR | S_IWUSR; | |
1155 | res_attr->size = pci_resource_len(pdev, num); | |
1156 | res_attr->private = &pdev->resource[num]; | |
1157 | retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
1158 | } else | |
1159 | retval = -ENOMEM; | |
1160 | ||
1161 | return retval; | |
1162 | } | |
1163 | ||
1da177e4 LT |
1164 | /** |
1165 | * pci_create_resource_files - create resource files in sysfs for @dev | |
cffb2faf | 1166 | * @pdev: dev in question |
1da177e4 | 1167 | * |
cffb2faf | 1168 | * Walk the resources in @pdev creating files for each resource available. |
1da177e4 | 1169 | */ |
b19441af | 1170 | static int pci_create_resource_files(struct pci_dev *pdev) |
1da177e4 LT |
1171 | { |
1172 | int i; | |
b19441af | 1173 | int retval; |
1da177e4 LT |
1174 | |
1175 | /* Expose the PCI resources from this device as files */ | |
1176 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1da177e4 LT |
1177 | |
1178 | /* skip empty resources */ | |
1179 | if (!pci_resource_len(pdev, i)) | |
1180 | continue; | |
1181 | ||
45aec1ae | 1182 | retval = pci_create_attr(pdev, i, 0); |
1183 | /* for prefetchable resources, create a WC mappable file */ | |
1184 | if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) | |
1185 | retval = pci_create_attr(pdev, i, 1); | |
1186 | ||
1187 | if (retval) { | |
1188 | pci_remove_resource_files(pdev); | |
1189 | return retval; | |
1da177e4 LT |
1190 | } |
1191 | } | |
b19441af | 1192 | return 0; |
1da177e4 LT |
1193 | } |
1194 | #else /* !HAVE_PCI_MMAP */ | |
10a0ef39 IK |
1195 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } |
1196 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } | |
1da177e4 LT |
1197 | #endif /* HAVE_PCI_MMAP */ |
1198 | ||
1199 | /** | |
1200 | * pci_write_rom - used to enable access to the PCI ROM display | |
2c3c8bea | 1201 | * @filp: sysfs file |
1da177e4 | 1202 | * @kobj: kernel object handle |
cffb2faf | 1203 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1204 | * @buf: user input |
1205 | * @off: file offset | |
1206 | * @count: number of byte in input | |
1207 | * | |
1208 | * writing anything except 0 enables it | |
1209 | */ | |
1210 | static ssize_t | |
2c3c8bea CW |
1211 | pci_write_rom(struct file *filp, struct kobject *kobj, |
1212 | struct bin_attribute *bin_attr, | |
91a69029 | 1213 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1214 | { |
1215 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1216 | ||
1217 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
1218 | pdev->rom_attr_enabled = 0; | |
1219 | else | |
1220 | pdev->rom_attr_enabled = 1; | |
1221 | ||
1222 | return count; | |
1223 | } | |
1224 | ||
1225 | /** | |
1226 | * pci_read_rom - read a PCI ROM | |
2c3c8bea | 1227 | * @filp: sysfs file |
1da177e4 | 1228 | * @kobj: kernel object handle |
cffb2faf | 1229 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1230 | * @buf: where to put the data we read from the ROM |
1231 | * @off: file offset | |
1232 | * @count: number of bytes to read | |
1233 | * | |
1234 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
1235 | * device corresponding to @kobj. | |
1236 | */ | |
1237 | static ssize_t | |
2c3c8bea CW |
1238 | pci_read_rom(struct file *filp, struct kobject *kobj, |
1239 | struct bin_attribute *bin_attr, | |
91a69029 | 1240 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1241 | { |
1242 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1243 | void __iomem *rom; | |
1244 | size_t size; | |
1245 | ||
1246 | if (!pdev->rom_attr_enabled) | |
1247 | return -EINVAL; | |
1248 | ||
1249 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ | |
97c44836 TN |
1250 | if (!rom || !size) |
1251 | return -EIO; | |
1da177e4 LT |
1252 | |
1253 | if (off >= size) | |
1254 | count = 0; | |
1255 | else { | |
1256 | if (off + count > size) | |
1257 | count = size - off; | |
1258 | ||
1259 | memcpy_fromio(buf, rom + off, count); | |
1260 | } | |
1261 | pci_unmap_rom(pdev, rom); | |
1262 | ||
1263 | return count; | |
1264 | } | |
1265 | ||
1266 | static struct bin_attribute pci_config_attr = { | |
1267 | .attr = { | |
1268 | .name = "config", | |
1269 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1270 | }, |
557848c3 | 1271 | .size = PCI_CFG_SPACE_SIZE, |
1da177e4 LT |
1272 | .read = pci_read_config, |
1273 | .write = pci_write_config, | |
1274 | }; | |
1275 | ||
1276 | static struct bin_attribute pcie_config_attr = { | |
1277 | .attr = { | |
1278 | .name = "config", | |
1279 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1280 | }, |
557848c3 | 1281 | .size = PCI_CFG_SPACE_EXP_SIZE, |
1da177e4 LT |
1282 | .read = pci_read_config, |
1283 | .write = pci_write_config, | |
1284 | }; | |
1285 | ||
d6d88c83 | 1286 | int __weak pcibios_add_platform_entries(struct pci_dev *dev) |
575e3348 | 1287 | { |
a2cd52ca | 1288 | return 0; |
575e3348 ME |
1289 | } |
1290 | ||
711d5779 MT |
1291 | static ssize_t reset_store(struct device *dev, |
1292 | struct device_attribute *attr, const char *buf, | |
1293 | size_t count) | |
1294 | { | |
1295 | struct pci_dev *pdev = to_pci_dev(dev); | |
1296 | unsigned long val; | |
1297 | ssize_t result = strict_strtoul(buf, 0, &val); | |
1298 | ||
1299 | if (result < 0) | |
1300 | return result; | |
1301 | ||
1302 | if (val != 1) | |
1303 | return -EINVAL; | |
447c5dd7 MS |
1304 | |
1305 | result = pci_reset_function(pdev); | |
1306 | if (result < 0) | |
1307 | return result; | |
1308 | ||
1309 | return count; | |
711d5779 MT |
1310 | } |
1311 | ||
1312 | static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store); | |
1313 | ||
280c73d3 ZY |
1314 | static int pci_create_capabilities_sysfs(struct pci_dev *dev) |
1315 | { | |
1316 | int retval; | |
1317 | struct bin_attribute *attr; | |
1318 | ||
1319 | /* If the device has VPD, try to expose it in sysfs. */ | |
1320 | if (dev->vpd) { | |
1321 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); | |
1322 | if (!attr) | |
1323 | return -ENOMEM; | |
1324 | ||
a07e4156 | 1325 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1326 | attr->size = dev->vpd->len; |
1327 | attr->attr.name = "vpd"; | |
1328 | attr->attr.mode = S_IRUSR | S_IWUSR; | |
287d19ce SH |
1329 | attr->read = read_vpd_attr; |
1330 | attr->write = write_vpd_attr; | |
280c73d3 ZY |
1331 | retval = sysfs_create_bin_file(&dev->dev.kobj, attr); |
1332 | if (retval) { | |
0f12a4e2 | 1333 | kfree(attr); |
280c73d3 ZY |
1334 | return retval; |
1335 | } | |
1336 | dev->vpd->attr = attr; | |
1337 | } | |
1338 | ||
1339 | /* Active State Power Management */ | |
1340 | pcie_aspm_create_sysfs_dev_files(dev); | |
1341 | ||
711d5779 MT |
1342 | if (!pci_probe_reset_function(dev)) { |
1343 | retval = device_create_file(&dev->dev, &reset_attr); | |
1344 | if (retval) | |
1345 | goto error; | |
1346 | dev->reset_fn = 1; | |
1347 | } | |
280c73d3 | 1348 | return 0; |
711d5779 MT |
1349 | |
1350 | error: | |
1351 | pcie_aspm_remove_sysfs_dev_files(dev); | |
1352 | if (dev->vpd && dev->vpd->attr) { | |
1353 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1354 | kfree(dev->vpd->attr); | |
1355 | } | |
1356 | ||
1357 | return retval; | |
280c73d3 ZY |
1358 | } |
1359 | ||
b19441af | 1360 | int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev) |
1da177e4 | 1361 | { |
b19441af | 1362 | int retval; |
280c73d3 ZY |
1363 | int rom_size = 0; |
1364 | struct bin_attribute *attr; | |
b19441af | 1365 | |
1da177e4 LT |
1366 | if (!sysfs_initialized) |
1367 | return -EACCES; | |
1368 | ||
557848c3 | 1369 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af | 1370 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1da177e4 | 1371 | else |
b19441af GKH |
1372 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
1373 | if (retval) | |
1374 | goto err; | |
1da177e4 | 1375 | |
b19441af GKH |
1376 | retval = pci_create_resource_files(pdev); |
1377 | if (retval) | |
280c73d3 ZY |
1378 | goto err_config_file; |
1379 | ||
1380 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) | |
1381 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1382 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1383 | rom_size = 0x20000; | |
1da177e4 LT |
1384 | |
1385 | /* If the device has a ROM, try to expose it in sysfs. */ | |
280c73d3 | 1386 | if (rom_size) { |
94e61088 | 1387 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); |
280c73d3 | 1388 | if (!attr) { |
b19441af | 1389 | retval = -ENOMEM; |
9890b12a | 1390 | goto err_resource_files; |
1da177e4 | 1391 | } |
a07e4156 | 1392 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1393 | attr->size = rom_size; |
1394 | attr->attr.name = "rom"; | |
ff29530e | 1395 | attr->attr.mode = S_IRUSR | S_IWUSR; |
280c73d3 ZY |
1396 | attr->read = pci_read_rom; |
1397 | attr->write = pci_write_rom; | |
1398 | retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); | |
1399 | if (retval) { | |
1400 | kfree(attr); | |
1401 | goto err_resource_files; | |
1402 | } | |
1403 | pdev->rom_attr = attr; | |
1da177e4 | 1404 | } |
280c73d3 | 1405 | |
1da177e4 | 1406 | /* add platform-specific attributes */ |
280c73d3 ZY |
1407 | retval = pcibios_add_platform_entries(pdev); |
1408 | if (retval) | |
625e1d59 | 1409 | goto err_rom_file; |
b19441af | 1410 | |
280c73d3 ZY |
1411 | /* add sysfs entries for various capabilities */ |
1412 | retval = pci_create_capabilities_sysfs(pdev); | |
1413 | if (retval) | |
625e1d59 | 1414 | goto err_rom_file; |
7d715a6c | 1415 | |
911e1c9b N |
1416 | pci_create_firmware_label_files(pdev); |
1417 | ||
1da177e4 | 1418 | return 0; |
b19441af | 1419 | |
a2cd52ca | 1420 | err_rom_file: |
280c73d3 | 1421 | if (rom_size) { |
94e61088 | 1422 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
280c73d3 ZY |
1423 | kfree(pdev->rom_attr); |
1424 | pdev->rom_attr = NULL; | |
1425 | } | |
9890b12a ME |
1426 | err_resource_files: |
1427 | pci_remove_resource_files(pdev); | |
94e61088 | 1428 | err_config_file: |
557848c3 | 1429 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af GKH |
1430 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1431 | else | |
1432 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1433 | err: | |
1434 | return retval; | |
1da177e4 LT |
1435 | } |
1436 | ||
280c73d3 ZY |
1437 | static void pci_remove_capabilities_sysfs(struct pci_dev *dev) |
1438 | { | |
1439 | if (dev->vpd && dev->vpd->attr) { | |
1440 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1441 | kfree(dev->vpd->attr); | |
1442 | } | |
1443 | ||
1444 | pcie_aspm_remove_sysfs_dev_files(dev); | |
711d5779 MT |
1445 | if (dev->reset_fn) { |
1446 | device_remove_file(&dev->dev, &reset_attr); | |
1447 | dev->reset_fn = 0; | |
1448 | } | |
280c73d3 ZY |
1449 | } |
1450 | ||
1da177e4 LT |
1451 | /** |
1452 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
1453 | * @pdev: device whose entries we should free | |
1454 | * | |
1455 | * Cleanup when @pdev is removed from sysfs. | |
1456 | */ | |
1457 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
1458 | { | |
280c73d3 ZY |
1459 | int rom_size = 0; |
1460 | ||
d67afe5e DM |
1461 | if (!sysfs_initialized) |
1462 | return; | |
1463 | ||
280c73d3 | 1464 | pci_remove_capabilities_sysfs(pdev); |
7d715a6c | 1465 | |
557848c3 | 1466 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
1da177e4 LT |
1467 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1468 | else | |
1469 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1470 | ||
1471 | pci_remove_resource_files(pdev); | |
1472 | ||
280c73d3 ZY |
1473 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) |
1474 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1475 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1476 | rom_size = 0x20000; | |
1477 | ||
1478 | if (rom_size && pdev->rom_attr) { | |
1479 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); | |
1480 | kfree(pdev->rom_attr); | |
1da177e4 | 1481 | } |
911e1c9b N |
1482 | |
1483 | pci_remove_firmware_label_files(pdev); | |
1484 | ||
1da177e4 LT |
1485 | } |
1486 | ||
1487 | static int __init pci_sysfs_init(void) | |
1488 | { | |
1489 | struct pci_dev *pdev = NULL; | |
b19441af GKH |
1490 | int retval; |
1491 | ||
1da177e4 | 1492 | sysfs_initialized = 1; |
b19441af GKH |
1493 | for_each_pci_dev(pdev) { |
1494 | retval = pci_create_sysfs_dev_files(pdev); | |
151fc5df JL |
1495 | if (retval) { |
1496 | pci_dev_put(pdev); | |
b19441af | 1497 | return retval; |
151fc5df | 1498 | } |
b19441af | 1499 | } |
1da177e4 LT |
1500 | |
1501 | return 0; | |
1502 | } | |
1503 | ||
40ee9e9f | 1504 | late_initcall(pci_sysfs_init); |
4e15c46b YL |
1505 | |
1506 | static struct attribute *pci_dev_dev_attrs[] = { | |
625e1d59 | 1507 | &vga_attr.attr, |
4e15c46b YL |
1508 | NULL, |
1509 | }; | |
1510 | ||
1511 | static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, | |
1512 | struct attribute *a, int n) | |
1513 | { | |
625e1d59 YL |
1514 | struct device *dev = container_of(kobj, struct device, kobj); |
1515 | struct pci_dev *pdev = to_pci_dev(dev); | |
1516 | ||
1517 | if (a == &vga_attr.attr) | |
1518 | if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1519 | return 0; | |
1520 | ||
4e15c46b YL |
1521 | return a->mode; |
1522 | } | |
1523 | ||
1789382a DD |
1524 | #ifdef CONFIG_PCI_IOV |
1525 | static struct attribute *sriov_dev_attrs[] = { | |
1526 | &sriov_totalvfs_attr.attr, | |
1527 | &sriov_numvfs_attr.attr, | |
1528 | NULL, | |
1529 | }; | |
1530 | ||
1531 | static umode_t sriov_attrs_are_visible(struct kobject *kobj, | |
1532 | struct attribute *a, int n) | |
1533 | { | |
1534 | struct device *dev = container_of(kobj, struct device, kobj); | |
1535 | ||
1536 | if (!dev_is_pf(dev)) | |
1537 | return 0; | |
1538 | ||
1539 | return a->mode; | |
1540 | } | |
1541 | ||
1542 | static struct attribute_group sriov_dev_attr_group = { | |
1543 | .attrs = sriov_dev_attrs, | |
1544 | .is_visible = sriov_attrs_are_visible, | |
1545 | }; | |
1546 | #endif /* CONFIG_PCI_IOV */ | |
1547 | ||
4e15c46b YL |
1548 | static struct attribute_group pci_dev_attr_group = { |
1549 | .attrs = pci_dev_dev_attrs, | |
1550 | .is_visible = pci_dev_attrs_are_visible, | |
1551 | }; | |
1552 | ||
1553 | static const struct attribute_group *pci_dev_attr_groups[] = { | |
1554 | &pci_dev_attr_group, | |
1789382a DD |
1555 | #ifdef CONFIG_PCI_IOV |
1556 | &sriov_dev_attr_group, | |
1557 | #endif | |
4e15c46b YL |
1558 | NULL, |
1559 | }; | |
1560 | ||
1561 | struct device_type pci_dev_type = { | |
1562 | .groups = pci_dev_attr_groups, | |
1563 | }; |