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 | * | |
f7625980 | 13 | * Modeled after usb's driverfs.c |
1da177e4 LT |
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); \ | |
5136b2da GKH |
45 | } \ |
46 | static DEVICE_ATTR_RO(field) | |
1da177e4 LT |
47 | |
48 | pci_config_attr(vendor, "0x%04x\n"); | |
49 | pci_config_attr(device, "0x%04x\n"); | |
50 | pci_config_attr(subsystem_vendor, "0x%04x\n"); | |
51 | pci_config_attr(subsystem_device, "0x%04x\n"); | |
52 | pci_config_attr(class, "0x%06x\n"); | |
53 | pci_config_attr(irq, "%u\n"); | |
54 | ||
bdee9d98 DT |
55 | static ssize_t broken_parity_status_show(struct device *dev, |
56 | struct device_attribute *attr, | |
57 | char *buf) | |
58 | { | |
59 | struct pci_dev *pdev = to_pci_dev(dev); | |
60 | return sprintf (buf, "%u\n", pdev->broken_parity_status); | |
61 | } | |
62 | ||
63 | static ssize_t broken_parity_status_store(struct device *dev, | |
64 | struct device_attribute *attr, | |
65 | const char *buf, size_t count) | |
66 | { | |
67 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 68 | unsigned long val; |
bdee9d98 | 69 | |
9a994e8e | 70 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 TP |
71 | return -EINVAL; |
72 | ||
73 | pdev->broken_parity_status = !!val; | |
74 | ||
75 | return count; | |
bdee9d98 | 76 | } |
5136b2da | 77 | static DEVICE_ATTR_RW(broken_parity_status); |
bdee9d98 | 78 | |
c489f5fb YW |
79 | static ssize_t pci_dev_show_local_cpu(struct device *dev, |
80 | int type, | |
81 | struct device_attribute *attr, | |
82 | char *buf) | |
83 | { | |
3be83050 | 84 | const struct cpumask *mask; |
4327edf6 AC |
85 | int len; |
86 | ||
e0cd5160 | 87 | #ifdef CONFIG_NUMA |
6be954d1 DJ |
88 | mask = (dev_to_node(dev) == -1) ? cpu_online_mask : |
89 | cpumask_of_node(dev_to_node(dev)); | |
e0cd5160 | 90 | #else |
3be83050 | 91 | mask = cpumask_of_pcibus(to_pci_dev(dev)->bus); |
e0cd5160 | 92 | #endif |
c489f5fb YW |
93 | len = type ? |
94 | cpumask_scnprintf(buf, PAGE_SIZE-2, mask) : | |
95 | cpulist_scnprintf(buf, PAGE_SIZE-2, mask); | |
96 | ||
39106dcf MT |
97 | buf[len++] = '\n'; |
98 | buf[len] = '\0'; | |
99 | return len; | |
100 | } | |
101 | ||
c489f5fb YW |
102 | static ssize_t local_cpus_show(struct device *dev, |
103 | struct device_attribute *attr, char *buf) | |
104 | { | |
105 | return pci_dev_show_local_cpu(dev, 1, attr, buf); | |
106 | } | |
5136b2da | 107 | static DEVICE_ATTR_RO(local_cpus); |
39106dcf MT |
108 | |
109 | static ssize_t local_cpulist_show(struct device *dev, | |
110 | struct device_attribute *attr, char *buf) | |
111 | { | |
c489f5fb | 112 | return pci_dev_show_local_cpu(dev, 0, attr, buf); |
1da177e4 | 113 | } |
5136b2da | 114 | static DEVICE_ATTR_RO(local_cpulist); |
1da177e4 | 115 | |
dc2c2c9d YL |
116 | /* |
117 | * PCI Bus Class Devices | |
118 | */ | |
119 | static ssize_t pci_bus_show_cpuaffinity(struct device *dev, | |
120 | int type, | |
121 | struct device_attribute *attr, | |
122 | char *buf) | |
123 | { | |
124 | int ret; | |
125 | const struct cpumask *cpumask; | |
126 | ||
127 | cpumask = cpumask_of_pcibus(to_pci_bus(dev)); | |
128 | ret = type ? | |
129 | cpulist_scnprintf(buf, PAGE_SIZE-2, cpumask) : | |
130 | cpumask_scnprintf(buf, PAGE_SIZE-2, cpumask); | |
131 | buf[ret++] = '\n'; | |
132 | buf[ret] = '\0'; | |
133 | return ret; | |
134 | } | |
135 | ||
56039e65 GKH |
136 | static ssize_t cpuaffinity_show(struct device *dev, |
137 | struct device_attribute *attr, char *buf) | |
dc2c2c9d YL |
138 | { |
139 | return pci_bus_show_cpuaffinity(dev, 0, attr, buf); | |
140 | } | |
56039e65 | 141 | static DEVICE_ATTR_RO(cpuaffinity); |
dc2c2c9d | 142 | |
56039e65 GKH |
143 | static ssize_t cpulistaffinity_show(struct device *dev, |
144 | struct device_attribute *attr, char *buf) | |
dc2c2c9d YL |
145 | { |
146 | return pci_bus_show_cpuaffinity(dev, 1, attr, buf); | |
147 | } | |
56039e65 | 148 | static DEVICE_ATTR_RO(cpulistaffinity); |
dc2c2c9d | 149 | |
1da177e4 LT |
150 | /* show resources */ |
151 | static ssize_t | |
e404e274 | 152 | resource_show(struct device * dev, struct device_attribute *attr, char * buf) |
1da177e4 LT |
153 | { |
154 | struct pci_dev * pci_dev = to_pci_dev(dev); | |
155 | char * str = buf; | |
156 | int i; | |
fde09c6d | 157 | int max; |
e31dd6e4 | 158 | resource_size_t start, end; |
1da177e4 LT |
159 | |
160 | if (pci_dev->subordinate) | |
161 | max = DEVICE_COUNT_RESOURCE; | |
fde09c6d YZ |
162 | else |
163 | max = PCI_BRIDGE_RESOURCES; | |
1da177e4 LT |
164 | |
165 | for (i = 0; i < max; i++) { | |
2311b1f2 ME |
166 | struct resource *res = &pci_dev->resource[i]; |
167 | pci_resource_to_user(pci_dev, i, res, &start, &end); | |
168 | str += sprintf(str,"0x%016llx 0x%016llx 0x%016llx\n", | |
169 | (unsigned long long)start, | |
170 | (unsigned long long)end, | |
171 | (unsigned long long)res->flags); | |
1da177e4 LT |
172 | } |
173 | return (str - buf); | |
174 | } | |
5136b2da | 175 | static DEVICE_ATTR_RO(resource); |
1da177e4 | 176 | |
87c8a443 | 177 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
9888549e GK |
178 | { |
179 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
180 | ||
181 | return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n", | |
182 | pci_dev->vendor, pci_dev->device, | |
183 | pci_dev->subsystem_vendor, pci_dev->subsystem_device, | |
184 | (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8), | |
185 | (u8)(pci_dev->class)); | |
186 | } | |
5136b2da | 187 | static DEVICE_ATTR_RO(modalias); |
bae94d02 | 188 | |
5136b2da GKH |
189 | static ssize_t enabled_store(struct device *dev, |
190 | struct device_attribute *attr, const char *buf, | |
191 | size_t count) | |
9f125d30 AV |
192 | { |
193 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 194 | unsigned long val; |
9a994e8e | 195 | ssize_t result = kstrtoul(buf, 0, &val); |
92425a40 TP |
196 | |
197 | if (result < 0) | |
198 | return result; | |
9f125d30 AV |
199 | |
200 | /* this can crash the machine when done on the "wrong" device */ | |
201 | if (!capable(CAP_SYS_ADMIN)) | |
92425a40 | 202 | return -EPERM; |
9f125d30 | 203 | |
92425a40 | 204 | if (!val) { |
296ccb08 | 205 | if (pci_is_enabled(pdev)) |
bae94d02 IPG |
206 | pci_disable_device(pdev); |
207 | else | |
208 | result = -EIO; | |
92425a40 | 209 | } else |
bae94d02 | 210 | result = pci_enable_device(pdev); |
9f125d30 | 211 | |
bae94d02 IPG |
212 | return result < 0 ? result : count; |
213 | } | |
214 | ||
5136b2da GKH |
215 | static ssize_t enabled_show(struct device *dev, |
216 | struct device_attribute *attr, char *buf) | |
bae94d02 IPG |
217 | { |
218 | struct pci_dev *pdev; | |
9f125d30 | 219 | |
bae94d02 IPG |
220 | pdev = to_pci_dev (dev); |
221 | return sprintf (buf, "%u\n", atomic_read(&pdev->enable_cnt)); | |
9f125d30 | 222 | } |
5136b2da | 223 | static DEVICE_ATTR_RW(enabled); |
9f125d30 | 224 | |
81bb0e19 BG |
225 | #ifdef CONFIG_NUMA |
226 | static ssize_t | |
227 | numa_node_show(struct device *dev, struct device_attribute *attr, char *buf) | |
228 | { | |
229 | return sprintf (buf, "%d\n", dev->numa_node); | |
230 | } | |
5136b2da | 231 | static DEVICE_ATTR_RO(numa_node); |
81bb0e19 BG |
232 | #endif |
233 | ||
bb965401 YL |
234 | static ssize_t |
235 | dma_mask_bits_show(struct device *dev, struct device_attribute *attr, char *buf) | |
236 | { | |
237 | struct pci_dev *pdev = to_pci_dev(dev); | |
238 | ||
239 | return sprintf (buf, "%d\n", fls64(pdev->dma_mask)); | |
240 | } | |
5136b2da | 241 | static DEVICE_ATTR_RO(dma_mask_bits); |
bb965401 YL |
242 | |
243 | static ssize_t | |
244 | consistent_dma_mask_bits_show(struct device *dev, struct device_attribute *attr, | |
245 | char *buf) | |
246 | { | |
247 | return sprintf (buf, "%d\n", fls64(dev->coherent_dma_mask)); | |
248 | } | |
5136b2da | 249 | static DEVICE_ATTR_RO(consistent_dma_mask_bits); |
bb965401 | 250 | |
fe97064c BG |
251 | static ssize_t |
252 | msi_bus_show(struct device *dev, struct device_attribute *attr, char *buf) | |
253 | { | |
254 | struct pci_dev *pdev = to_pci_dev(dev); | |
255 | ||
256 | if (!pdev->subordinate) | |
257 | return 0; | |
258 | ||
259 | return sprintf (buf, "%u\n", | |
260 | !(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI)); | |
261 | } | |
262 | ||
263 | static ssize_t | |
264 | msi_bus_store(struct device *dev, struct device_attribute *attr, | |
265 | const char *buf, size_t count) | |
266 | { | |
267 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 TP |
268 | unsigned long val; |
269 | ||
9a994e8e | 270 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 | 271 | return -EINVAL; |
fe97064c | 272 | |
f7625980 BH |
273 | /* |
274 | * Bad things may happen if the no_msi flag is changed | |
275 | * while drivers are loaded. | |
276 | */ | |
fe97064c | 277 | if (!capable(CAP_SYS_ADMIN)) |
92425a40 | 278 | return -EPERM; |
fe97064c | 279 | |
f7625980 BH |
280 | /* |
281 | * Maybe devices without subordinate buses shouldn't have this | |
282 | * attribute in the first place? | |
283 | */ | |
fe97064c BG |
284 | if (!pdev->subordinate) |
285 | return count; | |
286 | ||
92425a40 TP |
287 | /* Is the flag going to change, or keep the value it already had? */ |
288 | if (!(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI) ^ | |
289 | !!val) { | |
290 | pdev->subordinate->bus_flags ^= PCI_BUS_FLAGS_NO_MSI; | |
fe97064c | 291 | |
92425a40 TP |
292 | dev_warn(&pdev->dev, "forced subordinate bus to%s support MSI," |
293 | " bad things could happen\n", val ? "" : " not"); | |
fe97064c BG |
294 | } |
295 | ||
296 | return count; | |
297 | } | |
5136b2da | 298 | static DEVICE_ATTR_RW(msi_bus); |
9888549e | 299 | |
705b1aaa AC |
300 | static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf, |
301 | size_t count) | |
302 | { | |
303 | unsigned long val; | |
304 | struct pci_bus *b = NULL; | |
305 | ||
9a994e8e | 306 | if (kstrtoul(buf, 0, &val) < 0) |
705b1aaa AC |
307 | return -EINVAL; |
308 | ||
309 | if (val) { | |
9d16947b | 310 | pci_lock_rescan_remove(); |
705b1aaa AC |
311 | while ((b = pci_find_next_bus(b)) != NULL) |
312 | pci_rescan_bus(b); | |
9d16947b | 313 | pci_unlock_rescan_remove(); |
705b1aaa AC |
314 | } |
315 | return count; | |
316 | } | |
0f49ba55 | 317 | static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store); |
705b1aaa | 318 | |
bf22c90f | 319 | static struct attribute *pci_bus_attrs[] = { |
0f49ba55 GKH |
320 | &bus_attr_rescan.attr, |
321 | NULL, | |
322 | }; | |
323 | ||
324 | static const struct attribute_group pci_bus_group = { | |
325 | .attrs = pci_bus_attrs, | |
326 | }; | |
327 | ||
328 | const struct attribute_group *pci_bus_groups[] = { | |
329 | &pci_bus_group, | |
330 | NULL, | |
705b1aaa | 331 | }; |
77c27c7b | 332 | |
738a6396 AC |
333 | static ssize_t |
334 | dev_rescan_store(struct device *dev, struct device_attribute *attr, | |
335 | const char *buf, size_t count) | |
336 | { | |
337 | unsigned long val; | |
338 | struct pci_dev *pdev = to_pci_dev(dev); | |
339 | ||
9a994e8e | 340 | if (kstrtoul(buf, 0, &val) < 0) |
738a6396 AC |
341 | return -EINVAL; |
342 | ||
343 | if (val) { | |
9d16947b | 344 | pci_lock_rescan_remove(); |
738a6396 | 345 | pci_rescan_bus(pdev->bus); |
9d16947b | 346 | pci_unlock_rescan_remove(); |
738a6396 AC |
347 | } |
348 | return count; | |
349 | } | |
bf22c90f SK |
350 | static struct device_attribute dev_rescan_attr = __ATTR(rescan, |
351 | (S_IWUSR|S_IWGRP), | |
352 | NULL, dev_rescan_store); | |
738a6396 | 353 | |
77c27c7b | 354 | static ssize_t |
bc6caf02 | 355 | remove_store(struct device *dev, struct device_attribute *attr, |
77c27c7b AC |
356 | const char *buf, size_t count) |
357 | { | |
77c27c7b | 358 | unsigned long val; |
77c27c7b | 359 | |
9a994e8e | 360 | if (kstrtoul(buf, 0, &val) < 0) |
77c27c7b AC |
361 | return -EINVAL; |
362 | ||
bc6caf02 TH |
363 | if (val && device_remove_file_self(dev, attr)) |
364 | pci_stop_and_remove_bus_device_locked(to_pci_dev(dev)); | |
77c27c7b AC |
365 | return count; |
366 | } | |
bf22c90f SK |
367 | static struct device_attribute dev_remove_attr = __ATTR(remove, |
368 | (S_IWUSR|S_IWGRP), | |
369 | NULL, remove_store); | |
b9d320fc YL |
370 | |
371 | static ssize_t | |
372 | dev_bus_rescan_store(struct device *dev, struct device_attribute *attr, | |
373 | const char *buf, size_t count) | |
374 | { | |
375 | unsigned long val; | |
376 | struct pci_bus *bus = to_pci_bus(dev); | |
377 | ||
9a994e8e | 378 | if (kstrtoul(buf, 0, &val) < 0) |
b9d320fc YL |
379 | return -EINVAL; |
380 | ||
381 | if (val) { | |
9d16947b | 382 | pci_lock_rescan_remove(); |
2f320521 YL |
383 | if (!pci_is_root_bus(bus) && list_empty(&bus->devices)) |
384 | pci_rescan_bus_bridge_resize(bus->self); | |
385 | else | |
386 | pci_rescan_bus(bus); | |
9d16947b | 387 | pci_unlock_rescan_remove(); |
b9d320fc YL |
388 | } |
389 | return count; | |
390 | } | |
56039e65 | 391 | static DEVICE_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store); |
b9d320fc | 392 | |
448bd857 HY |
393 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
394 | static ssize_t d3cold_allowed_store(struct device *dev, | |
395 | struct device_attribute *attr, | |
396 | const char *buf, size_t count) | |
397 | { | |
398 | struct pci_dev *pdev = to_pci_dev(dev); | |
399 | unsigned long val; | |
400 | ||
9a994e8e | 401 | if (kstrtoul(buf, 0, &val) < 0) |
448bd857 HY |
402 | return -EINVAL; |
403 | ||
404 | pdev->d3cold_allowed = !!val; | |
405 | pm_runtime_resume(dev); | |
406 | ||
407 | return count; | |
408 | } | |
409 | ||
410 | static ssize_t d3cold_allowed_show(struct device *dev, | |
411 | struct device_attribute *attr, char *buf) | |
412 | { | |
413 | struct pci_dev *pdev = to_pci_dev(dev); | |
414 | return sprintf (buf, "%u\n", pdev->d3cold_allowed); | |
415 | } | |
5136b2da | 416 | static DEVICE_ATTR_RW(d3cold_allowed); |
448bd857 HY |
417 | #endif |
418 | ||
1789382a DD |
419 | #ifdef CONFIG_PCI_IOV |
420 | static ssize_t sriov_totalvfs_show(struct device *dev, | |
421 | struct device_attribute *attr, | |
422 | char *buf) | |
423 | { | |
424 | struct pci_dev *pdev = to_pci_dev(dev); | |
425 | ||
bff73156 | 426 | return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); |
1789382a DD |
427 | } |
428 | ||
429 | ||
430 | static ssize_t sriov_numvfs_show(struct device *dev, | |
431 | struct device_attribute *attr, | |
432 | char *buf) | |
433 | { | |
434 | struct pci_dev *pdev = to_pci_dev(dev); | |
435 | ||
6b136724 | 436 | return sprintf(buf, "%u\n", pdev->sriov->num_VFs); |
1789382a DD |
437 | } |
438 | ||
439 | /* | |
faa48a50 BH |
440 | * num_vfs > 0; number of VFs to enable |
441 | * num_vfs = 0; disable all VFs | |
1789382a DD |
442 | * |
443 | * Note: SRIOV spec doesn't allow partial VF | |
faa48a50 | 444 | * disable, so it's all or none. |
1789382a DD |
445 | */ |
446 | static ssize_t sriov_numvfs_store(struct device *dev, | |
447 | struct device_attribute *attr, | |
448 | const char *buf, size_t count) | |
449 | { | |
450 | struct pci_dev *pdev = to_pci_dev(dev); | |
faa48a50 BH |
451 | int ret; |
452 | u16 num_vfs; | |
1789382a | 453 | |
faa48a50 BH |
454 | ret = kstrtou16(buf, 0, &num_vfs); |
455 | if (ret < 0) | |
456 | return ret; | |
457 | ||
458 | if (num_vfs > pci_sriov_get_totalvfs(pdev)) | |
459 | return -ERANGE; | |
460 | ||
461 | if (num_vfs == pdev->sriov->num_VFs) | |
462 | return count; /* no change */ | |
1789382a DD |
463 | |
464 | /* is PF driver loaded w/callback */ | |
465 | if (!pdev->driver || !pdev->driver->sriov_configure) { | |
faa48a50 | 466 | dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n"); |
1789382a DD |
467 | return -ENOSYS; |
468 | } | |
469 | ||
faa48a50 BH |
470 | if (num_vfs == 0) { |
471 | /* disable VFs */ | |
472 | ret = pdev->driver->sriov_configure(pdev, 0); | |
473 | if (ret < 0) | |
474 | return ret; | |
475 | return count; | |
1789382a DD |
476 | } |
477 | ||
faa48a50 BH |
478 | /* enable VFs */ |
479 | if (pdev->sriov->num_VFs) { | |
480 | dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n", | |
481 | pdev->sriov->num_VFs, num_vfs); | |
482 | return -EBUSY; | |
1789382a DD |
483 | } |
484 | ||
faa48a50 BH |
485 | ret = pdev->driver->sriov_configure(pdev, num_vfs); |
486 | if (ret < 0) | |
487 | return ret; | |
1789382a | 488 | |
faa48a50 BH |
489 | if (ret != num_vfs) |
490 | dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n", | |
491 | num_vfs, ret); | |
492 | ||
493 | return count; | |
1789382a DD |
494 | } |
495 | ||
496 | static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); | |
497 | static struct device_attribute sriov_numvfs_attr = | |
498 | __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), | |
499 | sriov_numvfs_show, sriov_numvfs_store); | |
500 | #endif /* CONFIG_PCI_IOV */ | |
501 | ||
bf22c90f | 502 | static struct attribute *pci_dev_attrs[] = { |
5136b2da GKH |
503 | &dev_attr_resource.attr, |
504 | &dev_attr_vendor.attr, | |
505 | &dev_attr_device.attr, | |
506 | &dev_attr_subsystem_vendor.attr, | |
507 | &dev_attr_subsystem_device.attr, | |
508 | &dev_attr_class.attr, | |
509 | &dev_attr_irq.attr, | |
510 | &dev_attr_local_cpus.attr, | |
511 | &dev_attr_local_cpulist.attr, | |
512 | &dev_attr_modalias.attr, | |
81bb0e19 | 513 | #ifdef CONFIG_NUMA |
5136b2da | 514 | &dev_attr_numa_node.attr, |
81bb0e19 | 515 | #endif |
5136b2da GKH |
516 | &dev_attr_dma_mask_bits.attr, |
517 | &dev_attr_consistent_dma_mask_bits.attr, | |
518 | &dev_attr_enabled.attr, | |
519 | &dev_attr_broken_parity_status.attr, | |
520 | &dev_attr_msi_bus.attr, | |
448bd857 | 521 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
5136b2da | 522 | &dev_attr_d3cold_allowed.attr, |
77c27c7b | 523 | #endif |
5136b2da GKH |
524 | NULL, |
525 | }; | |
526 | ||
527 | static const struct attribute_group pci_dev_group = { | |
528 | .attrs = pci_dev_attrs, | |
529 | }; | |
530 | ||
531 | const struct attribute_group *pci_dev_groups[] = { | |
532 | &pci_dev_group, | |
533 | NULL, | |
1da177e4 LT |
534 | }; |
535 | ||
56039e65 GKH |
536 | static struct attribute *pcibus_attrs[] = { |
537 | &dev_attr_rescan.attr, | |
538 | &dev_attr_cpuaffinity.attr, | |
539 | &dev_attr_cpulistaffinity.attr, | |
540 | NULL, | |
541 | }; | |
542 | ||
543 | static const struct attribute_group pcibus_group = { | |
544 | .attrs = pcibus_attrs, | |
545 | }; | |
546 | ||
547 | const struct attribute_group *pcibus_groups[] = { | |
548 | &pcibus_group, | |
549 | NULL, | |
b9d320fc YL |
550 | }; |
551 | ||
217f45de DA |
552 | static ssize_t |
553 | boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf) | |
554 | { | |
555 | struct pci_dev *pdev = to_pci_dev(dev); | |
1a39b310 MG |
556 | struct pci_dev *vga_dev = vga_default_device(); |
557 | ||
558 | if (vga_dev) | |
559 | return sprintf(buf, "%u\n", (pdev == vga_dev)); | |
217f45de DA |
560 | |
561 | return sprintf(buf, "%u\n", | |
562 | !!(pdev->resource[PCI_ROM_RESOURCE].flags & | |
563 | IORESOURCE_ROM_SHADOW)); | |
564 | } | |
bf22c90f | 565 | static struct device_attribute vga_attr = __ATTR_RO(boot_vga); |
217f45de | 566 | |
1da177e4 | 567 | static ssize_t |
2c3c8bea CW |
568 | pci_read_config(struct file *filp, struct kobject *kobj, |
569 | struct bin_attribute *bin_attr, | |
91a69029 | 570 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
571 | { |
572 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
573 | unsigned int size = 64; | |
574 | loff_t init_off = off; | |
4c0619ad | 575 | u8 *data = (u8*) buf; |
1da177e4 LT |
576 | |
577 | /* Several chips lock up trying to read undefined config space */ | |
b7e724d3 | 578 | if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0) { |
1da177e4 LT |
579 | size = dev->cfg_size; |
580 | } else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) { | |
581 | size = 128; | |
582 | } | |
583 | ||
584 | if (off > size) | |
585 | return 0; | |
586 | if (off + count > size) { | |
587 | size -= off; | |
588 | count = size; | |
589 | } else { | |
590 | size = count; | |
591 | } | |
592 | ||
3d8387ef HY |
593 | pci_config_pm_runtime_get(dev); |
594 | ||
4c0619ad | 595 | if ((off & 1) && size) { |
596 | u8 val; | |
e04b0ea2 | 597 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 598 | data[off - init_off] = val; |
1da177e4 | 599 | off++; |
4c0619ad | 600 | size--; |
601 | } | |
602 | ||
603 | if ((off & 3) && size > 2) { | |
604 | u16 val; | |
e04b0ea2 | 605 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 606 | data[off - init_off] = val & 0xff; |
607 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
608 | off += 2; | |
609 | size -= 2; | |
1da177e4 LT |
610 | } |
611 | ||
612 | while (size > 3) { | |
4c0619ad | 613 | u32 val; |
e04b0ea2 | 614 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad | 615 | data[off - init_off] = val & 0xff; |
616 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
617 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
618 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
619 | off += 4; |
620 | size -= 4; | |
621 | } | |
622 | ||
4c0619ad | 623 | if (size >= 2) { |
624 | u16 val; | |
e04b0ea2 | 625 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 626 | data[off - init_off] = val & 0xff; |
627 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
628 | off += 2; | |
629 | size -= 2; | |
630 | } | |
631 | ||
632 | if (size > 0) { | |
633 | u8 val; | |
e04b0ea2 | 634 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 635 | data[off - init_off] = val; |
1da177e4 LT |
636 | off++; |
637 | --size; | |
638 | } | |
639 | ||
3d8387ef HY |
640 | pci_config_pm_runtime_put(dev); |
641 | ||
1da177e4 LT |
642 | return count; |
643 | } | |
644 | ||
645 | static ssize_t | |
2c3c8bea CW |
646 | pci_write_config(struct file* filp, struct kobject *kobj, |
647 | struct bin_attribute *bin_attr, | |
91a69029 | 648 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
649 | { |
650 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
651 | unsigned int size = count; | |
652 | loff_t init_off = off; | |
4c0619ad | 653 | u8 *data = (u8*) buf; |
1da177e4 LT |
654 | |
655 | if (off > dev->cfg_size) | |
656 | return 0; | |
657 | if (off + count > dev->cfg_size) { | |
658 | size = dev->cfg_size - off; | |
659 | count = size; | |
660 | } | |
f7625980 | 661 | |
3d8387ef HY |
662 | pci_config_pm_runtime_get(dev); |
663 | ||
4c0619ad | 664 | if ((off & 1) && size) { |
e04b0ea2 | 665 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 666 | off++; |
4c0619ad | 667 | size--; |
1da177e4 | 668 | } |
f7625980 | 669 | |
4c0619ad | 670 | if ((off & 3) && size > 2) { |
671 | u16 val = data[off - init_off]; | |
672 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 673 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 674 | off += 2; |
675 | size -= 2; | |
676 | } | |
1da177e4 LT |
677 | |
678 | while (size > 3) { | |
4c0619ad | 679 | u32 val = data[off - init_off]; |
680 | val |= (u32) data[off - init_off + 1] << 8; | |
681 | val |= (u32) data[off - init_off + 2] << 16; | |
682 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 683 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
684 | off += 4; |
685 | size -= 4; | |
686 | } | |
f7625980 | 687 | |
4c0619ad | 688 | if (size >= 2) { |
689 | u16 val = data[off - init_off]; | |
690 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 691 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 692 | off += 2; |
693 | size -= 2; | |
694 | } | |
1da177e4 | 695 | |
4c0619ad | 696 | if (size) { |
e04b0ea2 | 697 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
698 | off++; |
699 | --size; | |
700 | } | |
701 | ||
3d8387ef HY |
702 | pci_config_pm_runtime_put(dev); |
703 | ||
1da177e4 LT |
704 | return count; |
705 | } | |
706 | ||
94e61088 | 707 | static ssize_t |
2c3c8bea CW |
708 | read_vpd_attr(struct file *filp, struct kobject *kobj, |
709 | struct bin_attribute *bin_attr, | |
287d19ce | 710 | char *buf, loff_t off, size_t count) |
94e61088 BH |
711 | { |
712 | struct pci_dev *dev = | |
713 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
714 | |
715 | if (off > bin_attr->size) | |
716 | count = 0; | |
717 | else if (count > bin_attr->size - off) | |
718 | count = bin_attr->size - off; | |
94e61088 | 719 | |
287d19ce | 720 | return pci_read_vpd(dev, off, count, buf); |
94e61088 BH |
721 | } |
722 | ||
723 | static ssize_t | |
2c3c8bea CW |
724 | write_vpd_attr(struct file *filp, struct kobject *kobj, |
725 | struct bin_attribute *bin_attr, | |
287d19ce | 726 | char *buf, loff_t off, size_t count) |
94e61088 BH |
727 | { |
728 | struct pci_dev *dev = | |
729 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
730 | |
731 | if (off > bin_attr->size) | |
732 | count = 0; | |
733 | else if (count > bin_attr->size - off) | |
734 | count = bin_attr->size - off; | |
94e61088 | 735 | |
287d19ce | 736 | return pci_write_vpd(dev, off, count, buf); |
94e61088 BH |
737 | } |
738 | ||
1da177e4 LT |
739 | #ifdef HAVE_PCI_LEGACY |
740 | /** | |
741 | * pci_read_legacy_io - read byte(s) from 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 to store results |
746 | * @off: offset into legacy I/O port space | |
747 | * @count: number of bytes to read | |
748 | * | |
749 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
750 | * callback routine (pci_legacy_read). | |
751 | */ | |
f19aeb1f | 752 | static ssize_t |
2c3c8bea CW |
753 | pci_read_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 | ||
761 | /* Only support 1, 2 or 4 byte accesses */ | |
762 | if (count != 1 && count != 2 && count != 4) | |
763 | return -EINVAL; | |
764 | ||
765 | return pci_legacy_read(bus, off, (u32 *)buf, count); | |
766 | } | |
767 | ||
768 | /** | |
769 | * pci_write_legacy_io - write byte(s) to 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 containing value to be written |
774 | * @off: offset into legacy I/O port space | |
775 | * @count: number of bytes to write | |
776 | * | |
777 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
778 | * callback routine (pci_legacy_write). | |
779 | */ | |
f19aeb1f | 780 | static ssize_t |
2c3c8bea CW |
781 | pci_write_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 | /* Only support 1, 2 or 4 byte accesses */ | |
789 | if (count != 1 && count != 2 && count != 4) | |
790 | return -EINVAL; | |
791 | ||
792 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
793 | } | |
794 | ||
795 | /** | |
796 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
2c3c8bea | 797 | * @filp: open sysfs file |
1da177e4 LT |
798 | * @kobj: kobject corresponding to device to be mapped |
799 | * @attr: struct bin_attribute for this file | |
800 | * @vma: struct vm_area_struct passed to mmap | |
801 | * | |
f19aeb1f | 802 | * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap |
1da177e4 LT |
803 | * legacy memory space (first meg of bus space) into application virtual |
804 | * memory space. | |
805 | */ | |
f19aeb1f | 806 | static int |
2c3c8bea CW |
807 | pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, |
808 | struct bin_attribute *attr, | |
1da177e4 LT |
809 | struct vm_area_struct *vma) |
810 | { | |
811 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 812 | struct device, |
1da177e4 LT |
813 | kobj)); |
814 | ||
f19aeb1f BH |
815 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); |
816 | } | |
817 | ||
818 | /** | |
819 | * pci_mmap_legacy_io - map legacy PCI IO into user memory space | |
2c3c8bea | 820 | * @filp: open sysfs file |
f19aeb1f BH |
821 | * @kobj: kobject corresponding to device to be mapped |
822 | * @attr: struct bin_attribute for this file | |
823 | * @vma: struct vm_area_struct passed to mmap | |
824 | * | |
825 | * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap | |
826 | * legacy IO space (first meg of bus space) into application virtual | |
827 | * memory space. Returns -ENOSYS if the operation isn't supported | |
828 | */ | |
829 | static int | |
2c3c8bea CW |
830 | pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, |
831 | struct bin_attribute *attr, | |
f19aeb1f BH |
832 | struct vm_area_struct *vma) |
833 | { | |
834 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
835 | struct device, | |
836 | kobj)); | |
837 | ||
838 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); | |
839 | } | |
840 | ||
10a0ef39 IK |
841 | /** |
842 | * pci_adjust_legacy_attr - adjustment of legacy file attributes | |
843 | * @b: bus to create files under | |
844 | * @mmap_type: I/O port or memory | |
845 | * | |
846 | * Stub implementation. Can be overridden by arch if necessary. | |
847 | */ | |
848 | void __weak | |
849 | pci_adjust_legacy_attr(struct pci_bus *b, enum pci_mmap_state mmap_type) | |
850 | { | |
851 | return; | |
852 | } | |
853 | ||
f19aeb1f BH |
854 | /** |
855 | * pci_create_legacy_files - create legacy I/O port and memory files | |
856 | * @b: bus to create files under | |
857 | * | |
858 | * Some platforms allow access to legacy I/O port and ISA memory space on | |
859 | * a per-bus basis. This routine creates the files and ties them into | |
860 | * their associated read, write and mmap files from pci-sysfs.c | |
861 | * | |
25985edc | 862 | * On error unwind, but don't propagate the error to the caller |
f19aeb1f BH |
863 | * as it is ok to set up the PCI bus without these files. |
864 | */ | |
865 | void pci_create_legacy_files(struct pci_bus *b) | |
866 | { | |
867 | int error; | |
868 | ||
869 | b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, | |
870 | GFP_ATOMIC); | |
871 | if (!b->legacy_io) | |
872 | goto kzalloc_err; | |
873 | ||
62e877b8 | 874 | sysfs_bin_attr_init(b->legacy_io); |
f19aeb1f BH |
875 | b->legacy_io->attr.name = "legacy_io"; |
876 | b->legacy_io->size = 0xffff; | |
877 | b->legacy_io->attr.mode = S_IRUSR | S_IWUSR; | |
878 | b->legacy_io->read = pci_read_legacy_io; | |
879 | b->legacy_io->write = pci_write_legacy_io; | |
880 | b->legacy_io->mmap = pci_mmap_legacy_io; | |
10a0ef39 | 881 | pci_adjust_legacy_attr(b, pci_mmap_io); |
f19aeb1f BH |
882 | error = device_create_bin_file(&b->dev, b->legacy_io); |
883 | if (error) | |
884 | goto legacy_io_err; | |
885 | ||
886 | /* Allocated above after the legacy_io struct */ | |
887 | b->legacy_mem = b->legacy_io + 1; | |
6757eca3 | 888 | sysfs_bin_attr_init(b->legacy_mem); |
f19aeb1f BH |
889 | b->legacy_mem->attr.name = "legacy_mem"; |
890 | b->legacy_mem->size = 1024*1024; | |
891 | b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR; | |
892 | b->legacy_mem->mmap = pci_mmap_legacy_mem; | |
10a0ef39 | 893 | pci_adjust_legacy_attr(b, pci_mmap_mem); |
f19aeb1f BH |
894 | error = device_create_bin_file(&b->dev, b->legacy_mem); |
895 | if (error) | |
896 | goto legacy_mem_err; | |
897 | ||
898 | return; | |
899 | ||
900 | legacy_mem_err: | |
901 | device_remove_bin_file(&b->dev, b->legacy_io); | |
902 | legacy_io_err: | |
903 | kfree(b->legacy_io); | |
904 | b->legacy_io = NULL; | |
905 | kzalloc_err: | |
906 | printk(KERN_WARNING "pci: warning: could not create legacy I/O port " | |
907 | "and ISA memory resources to sysfs\n"); | |
908 | return; | |
909 | } | |
910 | ||
911 | void pci_remove_legacy_files(struct pci_bus *b) | |
912 | { | |
913 | if (b->legacy_io) { | |
914 | device_remove_bin_file(&b->dev, b->legacy_io); | |
915 | device_remove_bin_file(&b->dev, b->legacy_mem); | |
916 | kfree(b->legacy_io); /* both are allocated here */ | |
917 | } | |
1da177e4 LT |
918 | } |
919 | #endif /* HAVE_PCI_LEGACY */ | |
920 | ||
921 | #ifdef HAVE_PCI_MMAP | |
b5ff7df3 | 922 | |
3b519e4e MW |
923 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, |
924 | enum pci_mmap_api mmap_api) | |
b5ff7df3 | 925 | { |
3b519e4e | 926 | unsigned long nr, start, size, pci_start; |
b5ff7df3 | 927 | |
3b519e4e MW |
928 | if (pci_resource_len(pdev, resno) == 0) |
929 | return 0; | |
64b00175 | 930 | nr = vma_pages(vma); |
b5ff7df3 | 931 | start = vma->vm_pgoff; |
88e7df0b | 932 | size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; |
8c05cd08 | 933 | pci_start = (mmap_api == PCI_MMAP_PROCFS) ? |
3b519e4e MW |
934 | pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; |
935 | if (start >= pci_start && start < pci_start + size && | |
936 | start + nr <= pci_start + size) | |
b5ff7df3 | 937 | return 1; |
b5ff7df3 LT |
938 | return 0; |
939 | } | |
940 | ||
1da177e4 LT |
941 | /** |
942 | * pci_mmap_resource - map a PCI resource into user memory space | |
943 | * @kobj: kobject for mapping | |
944 | * @attr: struct bin_attribute for the file being mapped | |
945 | * @vma: struct vm_area_struct passed into the mmap | |
45aec1ae | 946 | * @write_combine: 1 for write_combine mapping |
1da177e4 LT |
947 | * |
948 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
1da177e4 LT |
949 | */ |
950 | static int | |
951 | pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, | |
45aec1ae | 952 | struct vm_area_struct *vma, int write_combine) |
1da177e4 LT |
953 | { |
954 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
955 | struct device, kobj)); | |
a3f5835a | 956 | struct resource *res = attr->private; |
1da177e4 | 957 | enum pci_mmap_state mmap_type; |
e31dd6e4 | 958 | resource_size_t start, end; |
2311b1f2 | 959 | int i; |
1da177e4 | 960 | |
2311b1f2 ME |
961 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
962 | if (res == &pdev->resource[i]) | |
963 | break; | |
964 | if (i >= PCI_ROM_RESOURCE) | |
965 | return -ENODEV; | |
966 | ||
3b519e4e MW |
967 | if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { |
968 | WARN(1, "process \"%s\" tried to map 0x%08lx bytes " | |
969 | "at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n", | |
970 | current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, | |
971 | pci_name(pdev), i, | |
e25cd062 RD |
972 | (u64)pci_resource_start(pdev, i), |
973 | (u64)pci_resource_len(pdev, i)); | |
b5ff7df3 | 974 | return -EINVAL; |
3b519e4e | 975 | } |
b5ff7df3 | 976 | |
2311b1f2 ME |
977 | /* pci_mmap_page_range() expects the same kind of entry as coming |
978 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
979 | * different from the resource itself, arch will do necessary fixup. | |
980 | */ | |
981 | pci_resource_to_user(pdev, i, res, &start, &end); | |
982 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 LT |
983 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
984 | ||
e8de1481 AV |
985 | if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start)) |
986 | return -EINVAL; | |
987 | ||
45aec1ae | 988 | return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); |
989 | } | |
990 | ||
991 | static int | |
2c3c8bea CW |
992 | pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, |
993 | struct bin_attribute *attr, | |
45aec1ae | 994 | struct vm_area_struct *vma) |
995 | { | |
996 | return pci_mmap_resource(kobj, attr, vma, 0); | |
997 | } | |
998 | ||
999 | static int | |
2c3c8bea CW |
1000 | pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, |
1001 | struct bin_attribute *attr, | |
45aec1ae | 1002 | struct vm_area_struct *vma) |
1003 | { | |
1004 | return pci_mmap_resource(kobj, attr, vma, 1); | |
1da177e4 LT |
1005 | } |
1006 | ||
8633328b AW |
1007 | static ssize_t |
1008 | pci_resource_io(struct file *filp, struct kobject *kobj, | |
1009 | struct bin_attribute *attr, char *buf, | |
1010 | loff_t off, size_t count, bool write) | |
1011 | { | |
1012 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
1013 | struct device, kobj)); | |
1014 | struct resource *res = attr->private; | |
1015 | unsigned long port = off; | |
1016 | int i; | |
1017 | ||
1018 | for (i = 0; i < PCI_ROM_RESOURCE; i++) | |
1019 | if (res == &pdev->resource[i]) | |
1020 | break; | |
1021 | if (i >= PCI_ROM_RESOURCE) | |
1022 | return -ENODEV; | |
1023 | ||
1024 | port += pci_resource_start(pdev, i); | |
1025 | ||
1026 | if (port > pci_resource_end(pdev, i)) | |
1027 | return 0; | |
1028 | ||
1029 | if (port + count - 1 > pci_resource_end(pdev, i)) | |
1030 | return -EINVAL; | |
1031 | ||
1032 | switch (count) { | |
1033 | case 1: | |
1034 | if (write) | |
1035 | outb(*(u8 *)buf, port); | |
1036 | else | |
1037 | *(u8 *)buf = inb(port); | |
1038 | return 1; | |
1039 | case 2: | |
1040 | if (write) | |
1041 | outw(*(u16 *)buf, port); | |
1042 | else | |
1043 | *(u16 *)buf = inw(port); | |
1044 | return 2; | |
1045 | case 4: | |
1046 | if (write) | |
1047 | outl(*(u32 *)buf, port); | |
1048 | else | |
1049 | *(u32 *)buf = inl(port); | |
1050 | return 4; | |
1051 | } | |
1052 | return -EINVAL; | |
1053 | } | |
1054 | ||
1055 | static ssize_t | |
1056 | pci_read_resource_io(struct file *filp, struct kobject *kobj, | |
1057 | struct bin_attribute *attr, char *buf, | |
1058 | loff_t off, size_t count) | |
1059 | { | |
1060 | return pci_resource_io(filp, kobj, attr, buf, off, count, false); | |
1061 | } | |
1062 | ||
1063 | static ssize_t | |
1064 | pci_write_resource_io(struct file *filp, struct kobject *kobj, | |
1065 | struct bin_attribute *attr, char *buf, | |
1066 | loff_t off, size_t count) | |
1067 | { | |
1068 | return pci_resource_io(filp, kobj, attr, buf, off, count, true); | |
1069 | } | |
1070 | ||
b19441af GKH |
1071 | /** |
1072 | * pci_remove_resource_files - cleanup resource files | |
cffb2faf | 1073 | * @pdev: dev to cleanup |
b19441af | 1074 | * |
cffb2faf | 1075 | * If we created resource files for @pdev, remove them from sysfs and |
b19441af GKH |
1076 | * free their resources. |
1077 | */ | |
1078 | static void | |
1079 | pci_remove_resource_files(struct pci_dev *pdev) | |
1080 | { | |
1081 | int i; | |
1082 | ||
1083 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1084 | struct bin_attribute *res_attr; | |
1085 | ||
1086 | res_attr = pdev->res_attr[i]; | |
1087 | if (res_attr) { | |
1088 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1089 | kfree(res_attr); | |
1090 | } | |
45aec1ae | 1091 | |
1092 | res_attr = pdev->res_attr_wc[i]; | |
1093 | if (res_attr) { | |
1094 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1095 | kfree(res_attr); | |
1096 | } | |
b19441af GKH |
1097 | } |
1098 | } | |
1099 | ||
45aec1ae | 1100 | static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) |
1101 | { | |
1102 | /* allocate attribute structure, piggyback attribute name */ | |
1103 | int name_len = write_combine ? 13 : 10; | |
1104 | struct bin_attribute *res_attr; | |
1105 | int retval; | |
1106 | ||
1107 | res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); | |
1108 | if (res_attr) { | |
1109 | char *res_attr_name = (char *)(res_attr + 1); | |
1110 | ||
a07e4156 | 1111 | sysfs_bin_attr_init(res_attr); |
45aec1ae | 1112 | if (write_combine) { |
1113 | pdev->res_attr_wc[num] = res_attr; | |
1114 | sprintf(res_attr_name, "resource%d_wc", num); | |
1115 | res_attr->mmap = pci_mmap_resource_wc; | |
1116 | } else { | |
1117 | pdev->res_attr[num] = res_attr; | |
1118 | sprintf(res_attr_name, "resource%d", num); | |
1119 | res_attr->mmap = pci_mmap_resource_uc; | |
1120 | } | |
8633328b AW |
1121 | if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { |
1122 | res_attr->read = pci_read_resource_io; | |
1123 | res_attr->write = pci_write_resource_io; | |
1124 | } | |
45aec1ae | 1125 | res_attr->attr.name = res_attr_name; |
1126 | res_attr->attr.mode = S_IRUSR | S_IWUSR; | |
1127 | res_attr->size = pci_resource_len(pdev, num); | |
1128 | res_attr->private = &pdev->resource[num]; | |
1129 | retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
1130 | } else | |
1131 | retval = -ENOMEM; | |
1132 | ||
1133 | return retval; | |
1134 | } | |
1135 | ||
1da177e4 LT |
1136 | /** |
1137 | * pci_create_resource_files - create resource files in sysfs for @dev | |
cffb2faf | 1138 | * @pdev: dev in question |
1da177e4 | 1139 | * |
cffb2faf | 1140 | * Walk the resources in @pdev creating files for each resource available. |
1da177e4 | 1141 | */ |
b19441af | 1142 | static int pci_create_resource_files(struct pci_dev *pdev) |
1da177e4 LT |
1143 | { |
1144 | int i; | |
b19441af | 1145 | int retval; |
1da177e4 LT |
1146 | |
1147 | /* Expose the PCI resources from this device as files */ | |
1148 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1da177e4 LT |
1149 | |
1150 | /* skip empty resources */ | |
1151 | if (!pci_resource_len(pdev, i)) | |
1152 | continue; | |
1153 | ||
45aec1ae | 1154 | retval = pci_create_attr(pdev, i, 0); |
1155 | /* for prefetchable resources, create a WC mappable file */ | |
1156 | if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) | |
1157 | retval = pci_create_attr(pdev, i, 1); | |
1158 | ||
1159 | if (retval) { | |
1160 | pci_remove_resource_files(pdev); | |
1161 | return retval; | |
1da177e4 LT |
1162 | } |
1163 | } | |
b19441af | 1164 | return 0; |
1da177e4 LT |
1165 | } |
1166 | #else /* !HAVE_PCI_MMAP */ | |
10a0ef39 IK |
1167 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } |
1168 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } | |
1da177e4 LT |
1169 | #endif /* HAVE_PCI_MMAP */ |
1170 | ||
1171 | /** | |
1172 | * pci_write_rom - used to enable access to the PCI ROM display | |
2c3c8bea | 1173 | * @filp: sysfs file |
1da177e4 | 1174 | * @kobj: kernel object handle |
cffb2faf | 1175 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1176 | * @buf: user input |
1177 | * @off: file offset | |
1178 | * @count: number of byte in input | |
1179 | * | |
1180 | * writing anything except 0 enables it | |
1181 | */ | |
1182 | static ssize_t | |
2c3c8bea CW |
1183 | pci_write_rom(struct file *filp, struct kobject *kobj, |
1184 | struct bin_attribute *bin_attr, | |
91a69029 | 1185 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1186 | { |
1187 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1188 | ||
1189 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
1190 | pdev->rom_attr_enabled = 0; | |
1191 | else | |
1192 | pdev->rom_attr_enabled = 1; | |
1193 | ||
1194 | return count; | |
1195 | } | |
1196 | ||
1197 | /** | |
1198 | * pci_read_rom - read a PCI ROM | |
2c3c8bea | 1199 | * @filp: sysfs file |
1da177e4 | 1200 | * @kobj: kernel object handle |
cffb2faf | 1201 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1202 | * @buf: where to put the data we read from the ROM |
1203 | * @off: file offset | |
1204 | * @count: number of bytes to read | |
1205 | * | |
1206 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
1207 | * device corresponding to @kobj. | |
1208 | */ | |
1209 | static ssize_t | |
2c3c8bea CW |
1210 | pci_read_rom(struct file *filp, struct kobject *kobj, |
1211 | struct bin_attribute *bin_attr, | |
91a69029 | 1212 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1213 | { |
1214 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1215 | void __iomem *rom; | |
1216 | size_t size; | |
1217 | ||
1218 | if (!pdev->rom_attr_enabled) | |
1219 | return -EINVAL; | |
f7625980 | 1220 | |
1da177e4 | 1221 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ |
97c44836 TN |
1222 | if (!rom || !size) |
1223 | return -EIO; | |
f7625980 | 1224 | |
1da177e4 LT |
1225 | if (off >= size) |
1226 | count = 0; | |
1227 | else { | |
1228 | if (off + count > size) | |
1229 | count = size - off; | |
f7625980 | 1230 | |
1da177e4 LT |
1231 | memcpy_fromio(buf, rom + off, count); |
1232 | } | |
1233 | pci_unmap_rom(pdev, rom); | |
f7625980 | 1234 | |
1da177e4 LT |
1235 | return count; |
1236 | } | |
1237 | ||
1238 | static struct bin_attribute pci_config_attr = { | |
1239 | .attr = { | |
1240 | .name = "config", | |
1241 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1242 | }, |
557848c3 | 1243 | .size = PCI_CFG_SPACE_SIZE, |
1da177e4 LT |
1244 | .read = pci_read_config, |
1245 | .write = pci_write_config, | |
1246 | }; | |
1247 | ||
1248 | static struct bin_attribute pcie_config_attr = { | |
1249 | .attr = { | |
1250 | .name = "config", | |
1251 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1252 | }, |
557848c3 | 1253 | .size = PCI_CFG_SPACE_EXP_SIZE, |
1da177e4 LT |
1254 | .read = pci_read_config, |
1255 | .write = pci_write_config, | |
1256 | }; | |
1257 | ||
d6d88c83 | 1258 | int __weak pcibios_add_platform_entries(struct pci_dev *dev) |
575e3348 | 1259 | { |
a2cd52ca | 1260 | return 0; |
575e3348 ME |
1261 | } |
1262 | ||
711d5779 MT |
1263 | static ssize_t reset_store(struct device *dev, |
1264 | struct device_attribute *attr, const char *buf, | |
1265 | size_t count) | |
1266 | { | |
1267 | struct pci_dev *pdev = to_pci_dev(dev); | |
1268 | unsigned long val; | |
9a994e8e | 1269 | ssize_t result = kstrtoul(buf, 0, &val); |
711d5779 MT |
1270 | |
1271 | if (result < 0) | |
1272 | return result; | |
1273 | ||
1274 | if (val != 1) | |
1275 | return -EINVAL; | |
447c5dd7 MS |
1276 | |
1277 | result = pci_reset_function(pdev); | |
1278 | if (result < 0) | |
1279 | return result; | |
1280 | ||
1281 | return count; | |
711d5779 MT |
1282 | } |
1283 | ||
1284 | static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store); | |
1285 | ||
280c73d3 ZY |
1286 | static int pci_create_capabilities_sysfs(struct pci_dev *dev) |
1287 | { | |
1288 | int retval; | |
1289 | struct bin_attribute *attr; | |
1290 | ||
1291 | /* If the device has VPD, try to expose it in sysfs. */ | |
1292 | if (dev->vpd) { | |
1293 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); | |
1294 | if (!attr) | |
1295 | return -ENOMEM; | |
1296 | ||
a07e4156 | 1297 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1298 | attr->size = dev->vpd->len; |
1299 | attr->attr.name = "vpd"; | |
1300 | attr->attr.mode = S_IRUSR | S_IWUSR; | |
287d19ce SH |
1301 | attr->read = read_vpd_attr; |
1302 | attr->write = write_vpd_attr; | |
280c73d3 ZY |
1303 | retval = sysfs_create_bin_file(&dev->dev.kobj, attr); |
1304 | if (retval) { | |
0f12a4e2 | 1305 | kfree(attr); |
280c73d3 ZY |
1306 | return retval; |
1307 | } | |
1308 | dev->vpd->attr = attr; | |
1309 | } | |
1310 | ||
1311 | /* Active State Power Management */ | |
1312 | pcie_aspm_create_sysfs_dev_files(dev); | |
1313 | ||
711d5779 MT |
1314 | if (!pci_probe_reset_function(dev)) { |
1315 | retval = device_create_file(&dev->dev, &reset_attr); | |
1316 | if (retval) | |
1317 | goto error; | |
1318 | dev->reset_fn = 1; | |
1319 | } | |
280c73d3 | 1320 | return 0; |
711d5779 MT |
1321 | |
1322 | error: | |
1323 | pcie_aspm_remove_sysfs_dev_files(dev); | |
1324 | if (dev->vpd && dev->vpd->attr) { | |
1325 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1326 | kfree(dev->vpd->attr); | |
1327 | } | |
1328 | ||
1329 | return retval; | |
280c73d3 ZY |
1330 | } |
1331 | ||
b19441af | 1332 | int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev) |
1da177e4 | 1333 | { |
b19441af | 1334 | int retval; |
280c73d3 ZY |
1335 | int rom_size = 0; |
1336 | struct bin_attribute *attr; | |
b19441af | 1337 | |
1da177e4 LT |
1338 | if (!sysfs_initialized) |
1339 | return -EACCES; | |
1340 | ||
557848c3 | 1341 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af | 1342 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1da177e4 | 1343 | else |
b19441af GKH |
1344 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
1345 | if (retval) | |
1346 | goto err; | |
1da177e4 | 1347 | |
b19441af GKH |
1348 | retval = pci_create_resource_files(pdev); |
1349 | if (retval) | |
280c73d3 ZY |
1350 | goto err_config_file; |
1351 | ||
1352 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) | |
1353 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1354 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1355 | rom_size = 0x20000; | |
1da177e4 LT |
1356 | |
1357 | /* If the device has a ROM, try to expose it in sysfs. */ | |
280c73d3 | 1358 | if (rom_size) { |
94e61088 | 1359 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); |
280c73d3 | 1360 | if (!attr) { |
b19441af | 1361 | retval = -ENOMEM; |
9890b12a | 1362 | goto err_resource_files; |
1da177e4 | 1363 | } |
a07e4156 | 1364 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1365 | attr->size = rom_size; |
1366 | attr->attr.name = "rom"; | |
ff29530e | 1367 | attr->attr.mode = S_IRUSR | S_IWUSR; |
280c73d3 ZY |
1368 | attr->read = pci_read_rom; |
1369 | attr->write = pci_write_rom; | |
1370 | retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); | |
1371 | if (retval) { | |
1372 | kfree(attr); | |
1373 | goto err_resource_files; | |
1374 | } | |
1375 | pdev->rom_attr = attr; | |
1da177e4 | 1376 | } |
280c73d3 | 1377 | |
1da177e4 | 1378 | /* add platform-specific attributes */ |
280c73d3 ZY |
1379 | retval = pcibios_add_platform_entries(pdev); |
1380 | if (retval) | |
625e1d59 | 1381 | goto err_rom_file; |
b19441af | 1382 | |
280c73d3 ZY |
1383 | /* add sysfs entries for various capabilities */ |
1384 | retval = pci_create_capabilities_sysfs(pdev); | |
1385 | if (retval) | |
625e1d59 | 1386 | goto err_rom_file; |
7d715a6c | 1387 | |
911e1c9b N |
1388 | pci_create_firmware_label_files(pdev); |
1389 | ||
1da177e4 | 1390 | return 0; |
b19441af | 1391 | |
a2cd52ca | 1392 | err_rom_file: |
280c73d3 | 1393 | if (rom_size) { |
94e61088 | 1394 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
280c73d3 ZY |
1395 | kfree(pdev->rom_attr); |
1396 | pdev->rom_attr = NULL; | |
1397 | } | |
9890b12a ME |
1398 | err_resource_files: |
1399 | pci_remove_resource_files(pdev); | |
94e61088 | 1400 | err_config_file: |
557848c3 | 1401 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af GKH |
1402 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1403 | else | |
1404 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1405 | err: | |
1406 | return retval; | |
1da177e4 LT |
1407 | } |
1408 | ||
280c73d3 ZY |
1409 | static void pci_remove_capabilities_sysfs(struct pci_dev *dev) |
1410 | { | |
1411 | if (dev->vpd && dev->vpd->attr) { | |
1412 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1413 | kfree(dev->vpd->attr); | |
1414 | } | |
1415 | ||
1416 | pcie_aspm_remove_sysfs_dev_files(dev); | |
711d5779 MT |
1417 | if (dev->reset_fn) { |
1418 | device_remove_file(&dev->dev, &reset_attr); | |
1419 | dev->reset_fn = 0; | |
1420 | } | |
280c73d3 ZY |
1421 | } |
1422 | ||
1da177e4 LT |
1423 | /** |
1424 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
1425 | * @pdev: device whose entries we should free | |
1426 | * | |
1427 | * Cleanup when @pdev is removed from sysfs. | |
1428 | */ | |
1429 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
1430 | { | |
280c73d3 ZY |
1431 | int rom_size = 0; |
1432 | ||
d67afe5e DM |
1433 | if (!sysfs_initialized) |
1434 | return; | |
1435 | ||
280c73d3 | 1436 | pci_remove_capabilities_sysfs(pdev); |
7d715a6c | 1437 | |
557848c3 | 1438 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
1da177e4 LT |
1439 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1440 | else | |
1441 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1442 | ||
1443 | pci_remove_resource_files(pdev); | |
1444 | ||
280c73d3 ZY |
1445 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) |
1446 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1447 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1448 | rom_size = 0x20000; | |
1449 | ||
1450 | if (rom_size && pdev->rom_attr) { | |
1451 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); | |
1452 | kfree(pdev->rom_attr); | |
1da177e4 | 1453 | } |
911e1c9b N |
1454 | |
1455 | pci_remove_firmware_label_files(pdev); | |
1456 | ||
1da177e4 LT |
1457 | } |
1458 | ||
1459 | static int __init pci_sysfs_init(void) | |
1460 | { | |
1461 | struct pci_dev *pdev = NULL; | |
b19441af GKH |
1462 | int retval; |
1463 | ||
1da177e4 | 1464 | sysfs_initialized = 1; |
b19441af GKH |
1465 | for_each_pci_dev(pdev) { |
1466 | retval = pci_create_sysfs_dev_files(pdev); | |
151fc5df JL |
1467 | if (retval) { |
1468 | pci_dev_put(pdev); | |
b19441af | 1469 | return retval; |
151fc5df | 1470 | } |
b19441af | 1471 | } |
1da177e4 LT |
1472 | |
1473 | return 0; | |
1474 | } | |
1475 | ||
40ee9e9f | 1476 | late_initcall(pci_sysfs_init); |
4e15c46b YL |
1477 | |
1478 | static struct attribute *pci_dev_dev_attrs[] = { | |
625e1d59 | 1479 | &vga_attr.attr, |
4e15c46b YL |
1480 | NULL, |
1481 | }; | |
1482 | ||
1483 | static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, | |
1484 | struct attribute *a, int n) | |
1485 | { | |
625e1d59 YL |
1486 | struct device *dev = container_of(kobj, struct device, kobj); |
1487 | struct pci_dev *pdev = to_pci_dev(dev); | |
1488 | ||
1489 | if (a == &vga_attr.attr) | |
1490 | if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1491 | return 0; | |
1492 | ||
4e15c46b YL |
1493 | return a->mode; |
1494 | } | |
1495 | ||
dfab88be JL |
1496 | static struct attribute *pci_dev_hp_attrs[] = { |
1497 | &dev_remove_attr.attr, | |
1498 | &dev_rescan_attr.attr, | |
1499 | NULL, | |
1500 | }; | |
1501 | ||
1502 | static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, | |
1503 | struct attribute *a, int n) | |
1504 | { | |
1505 | struct device *dev = container_of(kobj, struct device, kobj); | |
1506 | struct pci_dev *pdev = to_pci_dev(dev); | |
1507 | ||
1508 | if (pdev->is_virtfn) | |
1509 | return 0; | |
1510 | ||
1511 | return a->mode; | |
1512 | } | |
1513 | ||
1514 | static struct attribute_group pci_dev_hp_attr_group = { | |
1515 | .attrs = pci_dev_hp_attrs, | |
1516 | .is_visible = pci_dev_hp_attrs_are_visible, | |
1517 | }; | |
1518 | ||
1789382a DD |
1519 | #ifdef CONFIG_PCI_IOV |
1520 | static struct attribute *sriov_dev_attrs[] = { | |
1521 | &sriov_totalvfs_attr.attr, | |
1522 | &sriov_numvfs_attr.attr, | |
1523 | NULL, | |
1524 | }; | |
1525 | ||
1526 | static umode_t sriov_attrs_are_visible(struct kobject *kobj, | |
1527 | struct attribute *a, int n) | |
1528 | { | |
1529 | struct device *dev = container_of(kobj, struct device, kobj); | |
1530 | ||
1531 | if (!dev_is_pf(dev)) | |
1532 | return 0; | |
1533 | ||
1534 | return a->mode; | |
1535 | } | |
1536 | ||
1537 | static struct attribute_group sriov_dev_attr_group = { | |
1538 | .attrs = sriov_dev_attrs, | |
1539 | .is_visible = sriov_attrs_are_visible, | |
1540 | }; | |
1541 | #endif /* CONFIG_PCI_IOV */ | |
1542 | ||
4e15c46b YL |
1543 | static struct attribute_group pci_dev_attr_group = { |
1544 | .attrs = pci_dev_dev_attrs, | |
1545 | .is_visible = pci_dev_attrs_are_visible, | |
1546 | }; | |
1547 | ||
1548 | static const struct attribute_group *pci_dev_attr_groups[] = { | |
1549 | &pci_dev_attr_group, | |
dfab88be | 1550 | &pci_dev_hp_attr_group, |
1789382a DD |
1551 | #ifdef CONFIG_PCI_IOV |
1552 | &sriov_dev_attr_group, | |
1553 | #endif | |
4e15c46b YL |
1554 | NULL, |
1555 | }; | |
1556 | ||
1557 | struct device_type pci_dev_type = { | |
1558 | .groups = pci_dev_attr_groups, | |
1559 | }; |