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> |
dfc73e7a | 32 | #include <linux/of.h> |
1da177e4 LT |
33 | #include "pci.h" |
34 | ||
35 | static int sysfs_initialized; /* = 0 */ | |
36 | ||
37 | /* show configuration fields */ | |
38 | #define pci_config_attr(field, format_string) \ | |
39 | static ssize_t \ | |
e404e274 | 40 | field##_show(struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
41 | { \ |
42 | struct pci_dev *pdev; \ | |
43 | \ | |
44 | pdev = to_pci_dev (dev); \ | |
45 | return sprintf (buf, format_string, pdev->field); \ | |
5136b2da GKH |
46 | } \ |
47 | static DEVICE_ATTR_RO(field) | |
1da177e4 LT |
48 | |
49 | pci_config_attr(vendor, "0x%04x\n"); | |
50 | pci_config_attr(device, "0x%04x\n"); | |
51 | pci_config_attr(subsystem_vendor, "0x%04x\n"); | |
52 | pci_config_attr(subsystem_device, "0x%04x\n"); | |
53 | pci_config_attr(class, "0x%06x\n"); | |
54 | pci_config_attr(irq, "%u\n"); | |
55 | ||
bdee9d98 DT |
56 | static ssize_t broken_parity_status_show(struct device *dev, |
57 | struct device_attribute *attr, | |
58 | char *buf) | |
59 | { | |
60 | struct pci_dev *pdev = to_pci_dev(dev); | |
61 | return sprintf (buf, "%u\n", pdev->broken_parity_status); | |
62 | } | |
63 | ||
64 | static ssize_t broken_parity_status_store(struct device *dev, | |
65 | struct device_attribute *attr, | |
66 | const char *buf, size_t count) | |
67 | { | |
68 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 69 | unsigned long val; |
bdee9d98 | 70 | |
9a994e8e | 71 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 TP |
72 | return -EINVAL; |
73 | ||
74 | pdev->broken_parity_status = !!val; | |
75 | ||
76 | return count; | |
bdee9d98 | 77 | } |
5136b2da | 78 | static DEVICE_ATTR_RW(broken_parity_status); |
bdee9d98 | 79 | |
c489f5fb YW |
80 | static ssize_t pci_dev_show_local_cpu(struct device *dev, |
81 | int type, | |
82 | struct device_attribute *attr, | |
83 | char *buf) | |
84 | { | |
3be83050 | 85 | const struct cpumask *mask; |
4327edf6 AC |
86 | int len; |
87 | ||
e0cd5160 | 88 | #ifdef CONFIG_NUMA |
6be954d1 DJ |
89 | mask = (dev_to_node(dev) == -1) ? cpu_online_mask : |
90 | cpumask_of_node(dev_to_node(dev)); | |
e0cd5160 | 91 | #else |
3be83050 | 92 | mask = cpumask_of_pcibus(to_pci_dev(dev)->bus); |
e0cd5160 | 93 | #endif |
c489f5fb YW |
94 | len = type ? |
95 | cpumask_scnprintf(buf, PAGE_SIZE-2, mask) : | |
96 | cpulist_scnprintf(buf, PAGE_SIZE-2, mask); | |
97 | ||
39106dcf MT |
98 | buf[len++] = '\n'; |
99 | buf[len] = '\0'; | |
100 | return len; | |
101 | } | |
102 | ||
c489f5fb YW |
103 | static ssize_t local_cpus_show(struct device *dev, |
104 | struct device_attribute *attr, char *buf) | |
105 | { | |
106 | return pci_dev_show_local_cpu(dev, 1, attr, buf); | |
107 | } | |
5136b2da | 108 | static DEVICE_ATTR_RO(local_cpus); |
39106dcf MT |
109 | |
110 | static ssize_t local_cpulist_show(struct device *dev, | |
111 | struct device_attribute *attr, char *buf) | |
112 | { | |
c489f5fb | 113 | return pci_dev_show_local_cpu(dev, 0, attr, buf); |
1da177e4 | 114 | } |
5136b2da | 115 | static DEVICE_ATTR_RO(local_cpulist); |
1da177e4 | 116 | |
dc2c2c9d YL |
117 | /* |
118 | * PCI Bus Class Devices | |
119 | */ | |
120 | static ssize_t pci_bus_show_cpuaffinity(struct device *dev, | |
121 | int type, | |
122 | struct device_attribute *attr, | |
123 | char *buf) | |
124 | { | |
125 | int ret; | |
126 | const struct cpumask *cpumask; | |
127 | ||
128 | cpumask = cpumask_of_pcibus(to_pci_bus(dev)); | |
129 | ret = type ? | |
130 | cpulist_scnprintf(buf, PAGE_SIZE-2, cpumask) : | |
131 | cpumask_scnprintf(buf, PAGE_SIZE-2, cpumask); | |
132 | buf[ret++] = '\n'; | |
133 | buf[ret] = '\0'; | |
134 | return ret; | |
135 | } | |
136 | ||
56039e65 GKH |
137 | static ssize_t cpuaffinity_show(struct device *dev, |
138 | struct device_attribute *attr, char *buf) | |
dc2c2c9d YL |
139 | { |
140 | return pci_bus_show_cpuaffinity(dev, 0, attr, buf); | |
141 | } | |
56039e65 | 142 | static DEVICE_ATTR_RO(cpuaffinity); |
dc2c2c9d | 143 | |
56039e65 GKH |
144 | static ssize_t cpulistaffinity_show(struct device *dev, |
145 | struct device_attribute *attr, char *buf) | |
dc2c2c9d YL |
146 | { |
147 | return pci_bus_show_cpuaffinity(dev, 1, attr, buf); | |
148 | } | |
56039e65 | 149 | static DEVICE_ATTR_RO(cpulistaffinity); |
dc2c2c9d | 150 | |
1da177e4 LT |
151 | /* show resources */ |
152 | static ssize_t | |
e404e274 | 153 | resource_show(struct device * dev, struct device_attribute *attr, char * buf) |
1da177e4 LT |
154 | { |
155 | struct pci_dev * pci_dev = to_pci_dev(dev); | |
156 | char * str = buf; | |
157 | int i; | |
fde09c6d | 158 | int max; |
e31dd6e4 | 159 | resource_size_t start, end; |
1da177e4 LT |
160 | |
161 | if (pci_dev->subordinate) | |
162 | max = DEVICE_COUNT_RESOURCE; | |
fde09c6d YZ |
163 | else |
164 | max = PCI_BRIDGE_RESOURCES; | |
1da177e4 LT |
165 | |
166 | for (i = 0; i < max; i++) { | |
2311b1f2 ME |
167 | struct resource *res = &pci_dev->resource[i]; |
168 | pci_resource_to_user(pci_dev, i, res, &start, &end); | |
169 | str += sprintf(str,"0x%016llx 0x%016llx 0x%016llx\n", | |
170 | (unsigned long long)start, | |
171 | (unsigned long long)end, | |
172 | (unsigned long long)res->flags); | |
1da177e4 LT |
173 | } |
174 | return (str - buf); | |
175 | } | |
5136b2da | 176 | static DEVICE_ATTR_RO(resource); |
1da177e4 | 177 | |
87c8a443 | 178 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
9888549e GK |
179 | { |
180 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
181 | ||
182 | return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n", | |
183 | pci_dev->vendor, pci_dev->device, | |
184 | pci_dev->subsystem_vendor, pci_dev->subsystem_device, | |
185 | (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8), | |
186 | (u8)(pci_dev->class)); | |
187 | } | |
5136b2da | 188 | static DEVICE_ATTR_RO(modalias); |
bae94d02 | 189 | |
5136b2da GKH |
190 | static ssize_t enabled_store(struct device *dev, |
191 | struct device_attribute *attr, const char *buf, | |
192 | size_t count) | |
9f125d30 AV |
193 | { |
194 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 195 | unsigned long val; |
9a994e8e | 196 | ssize_t result = kstrtoul(buf, 0, &val); |
92425a40 TP |
197 | |
198 | if (result < 0) | |
199 | return result; | |
9f125d30 AV |
200 | |
201 | /* this can crash the machine when done on the "wrong" device */ | |
202 | if (!capable(CAP_SYS_ADMIN)) | |
92425a40 | 203 | return -EPERM; |
9f125d30 | 204 | |
92425a40 | 205 | if (!val) { |
296ccb08 | 206 | if (pci_is_enabled(pdev)) |
bae94d02 IPG |
207 | pci_disable_device(pdev); |
208 | else | |
209 | result = -EIO; | |
92425a40 | 210 | } else |
bae94d02 | 211 | result = pci_enable_device(pdev); |
9f125d30 | 212 | |
bae94d02 IPG |
213 | return result < 0 ? result : count; |
214 | } | |
215 | ||
5136b2da GKH |
216 | static ssize_t enabled_show(struct device *dev, |
217 | struct device_attribute *attr, char *buf) | |
bae94d02 IPG |
218 | { |
219 | struct pci_dev *pdev; | |
9f125d30 | 220 | |
bae94d02 IPG |
221 | pdev = to_pci_dev (dev); |
222 | return sprintf (buf, "%u\n", atomic_read(&pdev->enable_cnt)); | |
9f125d30 | 223 | } |
5136b2da | 224 | static DEVICE_ATTR_RW(enabled); |
9f125d30 | 225 | |
81bb0e19 BG |
226 | #ifdef CONFIG_NUMA |
227 | static ssize_t | |
228 | numa_node_show(struct device *dev, struct device_attribute *attr, char *buf) | |
229 | { | |
230 | return sprintf (buf, "%d\n", dev->numa_node); | |
231 | } | |
5136b2da | 232 | static DEVICE_ATTR_RO(numa_node); |
81bb0e19 BG |
233 | #endif |
234 | ||
bb965401 YL |
235 | static ssize_t |
236 | dma_mask_bits_show(struct device *dev, struct device_attribute *attr, char *buf) | |
237 | { | |
238 | struct pci_dev *pdev = to_pci_dev(dev); | |
239 | ||
240 | return sprintf (buf, "%d\n", fls64(pdev->dma_mask)); | |
241 | } | |
5136b2da | 242 | static DEVICE_ATTR_RO(dma_mask_bits); |
bb965401 YL |
243 | |
244 | static ssize_t | |
245 | consistent_dma_mask_bits_show(struct device *dev, struct device_attribute *attr, | |
246 | char *buf) | |
247 | { | |
248 | return sprintf (buf, "%d\n", fls64(dev->coherent_dma_mask)); | |
249 | } | |
5136b2da | 250 | static DEVICE_ATTR_RO(consistent_dma_mask_bits); |
bb965401 | 251 | |
fe97064c BG |
252 | static ssize_t |
253 | msi_bus_show(struct device *dev, struct device_attribute *attr, char *buf) | |
254 | { | |
255 | struct pci_dev *pdev = to_pci_dev(dev); | |
256 | ||
257 | if (!pdev->subordinate) | |
258 | return 0; | |
259 | ||
260 | return sprintf (buf, "%u\n", | |
261 | !(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI)); | |
262 | } | |
263 | ||
264 | static ssize_t | |
265 | msi_bus_store(struct device *dev, struct device_attribute *attr, | |
266 | const char *buf, size_t count) | |
267 | { | |
268 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 TP |
269 | unsigned long val; |
270 | ||
9a994e8e | 271 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 | 272 | return -EINVAL; |
fe97064c | 273 | |
f7625980 BH |
274 | /* |
275 | * Bad things may happen if the no_msi flag is changed | |
276 | * while drivers are loaded. | |
277 | */ | |
fe97064c | 278 | if (!capable(CAP_SYS_ADMIN)) |
92425a40 | 279 | return -EPERM; |
fe97064c | 280 | |
f7625980 BH |
281 | /* |
282 | * Maybe devices without subordinate buses shouldn't have this | |
283 | * attribute in the first place? | |
284 | */ | |
fe97064c BG |
285 | if (!pdev->subordinate) |
286 | return count; | |
287 | ||
92425a40 TP |
288 | /* Is the flag going to change, or keep the value it already had? */ |
289 | if (!(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI) ^ | |
290 | !!val) { | |
291 | pdev->subordinate->bus_flags ^= PCI_BUS_FLAGS_NO_MSI; | |
fe97064c | 292 | |
92425a40 TP |
293 | dev_warn(&pdev->dev, "forced subordinate bus to%s support MSI," |
294 | " bad things could happen\n", val ? "" : " not"); | |
fe97064c BG |
295 | } |
296 | ||
297 | return count; | |
298 | } | |
5136b2da | 299 | static DEVICE_ATTR_RW(msi_bus); |
9888549e | 300 | |
705b1aaa AC |
301 | static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf, |
302 | size_t count) | |
303 | { | |
304 | unsigned long val; | |
305 | struct pci_bus *b = NULL; | |
306 | ||
9a994e8e | 307 | if (kstrtoul(buf, 0, &val) < 0) |
705b1aaa AC |
308 | return -EINVAL; |
309 | ||
310 | if (val) { | |
9d16947b | 311 | pci_lock_rescan_remove(); |
705b1aaa AC |
312 | while ((b = pci_find_next_bus(b)) != NULL) |
313 | pci_rescan_bus(b); | |
9d16947b | 314 | pci_unlock_rescan_remove(); |
705b1aaa AC |
315 | } |
316 | return count; | |
317 | } | |
0f49ba55 | 318 | static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store); |
705b1aaa | 319 | |
bf22c90f | 320 | static struct attribute *pci_bus_attrs[] = { |
0f49ba55 GKH |
321 | &bus_attr_rescan.attr, |
322 | NULL, | |
323 | }; | |
324 | ||
325 | static const struct attribute_group pci_bus_group = { | |
326 | .attrs = pci_bus_attrs, | |
327 | }; | |
328 | ||
329 | const struct attribute_group *pci_bus_groups[] = { | |
330 | &pci_bus_group, | |
331 | NULL, | |
705b1aaa | 332 | }; |
77c27c7b | 333 | |
738a6396 AC |
334 | static ssize_t |
335 | dev_rescan_store(struct device *dev, struct device_attribute *attr, | |
336 | const char *buf, size_t count) | |
337 | { | |
338 | unsigned long val; | |
339 | struct pci_dev *pdev = to_pci_dev(dev); | |
340 | ||
9a994e8e | 341 | if (kstrtoul(buf, 0, &val) < 0) |
738a6396 AC |
342 | return -EINVAL; |
343 | ||
344 | if (val) { | |
9d16947b | 345 | pci_lock_rescan_remove(); |
738a6396 | 346 | pci_rescan_bus(pdev->bus); |
9d16947b | 347 | pci_unlock_rescan_remove(); |
738a6396 AC |
348 | } |
349 | return count; | |
350 | } | |
bf22c90f SK |
351 | static struct device_attribute dev_rescan_attr = __ATTR(rescan, |
352 | (S_IWUSR|S_IWGRP), | |
353 | NULL, dev_rescan_store); | |
738a6396 | 354 | |
77c27c7b | 355 | static ssize_t |
bc6caf02 | 356 | remove_store(struct device *dev, struct device_attribute *attr, |
77c27c7b AC |
357 | const char *buf, size_t count) |
358 | { | |
77c27c7b | 359 | unsigned long val; |
77c27c7b | 360 | |
9a994e8e | 361 | if (kstrtoul(buf, 0, &val) < 0) |
77c27c7b AC |
362 | return -EINVAL; |
363 | ||
bc6caf02 TH |
364 | if (val && device_remove_file_self(dev, attr)) |
365 | pci_stop_and_remove_bus_device_locked(to_pci_dev(dev)); | |
77c27c7b AC |
366 | return count; |
367 | } | |
bf22c90f SK |
368 | static struct device_attribute dev_remove_attr = __ATTR(remove, |
369 | (S_IWUSR|S_IWGRP), | |
370 | NULL, remove_store); | |
b9d320fc YL |
371 | |
372 | static ssize_t | |
373 | dev_bus_rescan_store(struct device *dev, struct device_attribute *attr, | |
374 | const char *buf, size_t count) | |
375 | { | |
376 | unsigned long val; | |
377 | struct pci_bus *bus = to_pci_bus(dev); | |
378 | ||
9a994e8e | 379 | if (kstrtoul(buf, 0, &val) < 0) |
b9d320fc YL |
380 | return -EINVAL; |
381 | ||
382 | if (val) { | |
9d16947b | 383 | pci_lock_rescan_remove(); |
2f320521 YL |
384 | if (!pci_is_root_bus(bus) && list_empty(&bus->devices)) |
385 | pci_rescan_bus_bridge_resize(bus->self); | |
386 | else | |
387 | pci_rescan_bus(bus); | |
9d16947b | 388 | pci_unlock_rescan_remove(); |
b9d320fc YL |
389 | } |
390 | return count; | |
391 | } | |
56039e65 | 392 | static DEVICE_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store); |
b9d320fc | 393 | |
448bd857 HY |
394 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
395 | static ssize_t d3cold_allowed_store(struct device *dev, | |
396 | struct device_attribute *attr, | |
397 | const char *buf, size_t count) | |
398 | { | |
399 | struct pci_dev *pdev = to_pci_dev(dev); | |
400 | unsigned long val; | |
401 | ||
9a994e8e | 402 | if (kstrtoul(buf, 0, &val) < 0) |
448bd857 HY |
403 | return -EINVAL; |
404 | ||
405 | pdev->d3cold_allowed = !!val; | |
406 | pm_runtime_resume(dev); | |
407 | ||
408 | return count; | |
409 | } | |
410 | ||
411 | static ssize_t d3cold_allowed_show(struct device *dev, | |
412 | struct device_attribute *attr, char *buf) | |
413 | { | |
414 | struct pci_dev *pdev = to_pci_dev(dev); | |
415 | return sprintf (buf, "%u\n", pdev->d3cold_allowed); | |
416 | } | |
5136b2da | 417 | static DEVICE_ATTR_RW(d3cold_allowed); |
448bd857 HY |
418 | #endif |
419 | ||
dfc73e7a SO |
420 | #ifdef CONFIG_OF |
421 | static ssize_t devspec_show(struct device *dev, | |
422 | struct device_attribute *attr, char *buf) | |
423 | { | |
424 | struct pci_dev *pdev = to_pci_dev(dev); | |
425 | struct device_node *np = pci_device_to_OF_node(pdev); | |
426 | ||
427 | if (np == NULL || np->full_name == NULL) | |
428 | return 0; | |
429 | return sprintf(buf, "%s", np->full_name); | |
430 | } | |
431 | static DEVICE_ATTR_RO(devspec); | |
432 | #endif | |
433 | ||
1789382a DD |
434 | #ifdef CONFIG_PCI_IOV |
435 | static ssize_t sriov_totalvfs_show(struct device *dev, | |
436 | struct device_attribute *attr, | |
437 | char *buf) | |
438 | { | |
439 | struct pci_dev *pdev = to_pci_dev(dev); | |
440 | ||
bff73156 | 441 | return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); |
1789382a DD |
442 | } |
443 | ||
444 | ||
445 | static ssize_t sriov_numvfs_show(struct device *dev, | |
446 | struct device_attribute *attr, | |
447 | char *buf) | |
448 | { | |
449 | struct pci_dev *pdev = to_pci_dev(dev); | |
450 | ||
6b136724 | 451 | return sprintf(buf, "%u\n", pdev->sriov->num_VFs); |
1789382a DD |
452 | } |
453 | ||
454 | /* | |
faa48a50 BH |
455 | * num_vfs > 0; number of VFs to enable |
456 | * num_vfs = 0; disable all VFs | |
1789382a DD |
457 | * |
458 | * Note: SRIOV spec doesn't allow partial VF | |
faa48a50 | 459 | * disable, so it's all or none. |
1789382a DD |
460 | */ |
461 | static ssize_t sriov_numvfs_store(struct device *dev, | |
462 | struct device_attribute *attr, | |
463 | const char *buf, size_t count) | |
464 | { | |
465 | struct pci_dev *pdev = to_pci_dev(dev); | |
faa48a50 BH |
466 | int ret; |
467 | u16 num_vfs; | |
1789382a | 468 | |
faa48a50 BH |
469 | ret = kstrtou16(buf, 0, &num_vfs); |
470 | if (ret < 0) | |
471 | return ret; | |
472 | ||
473 | if (num_vfs > pci_sriov_get_totalvfs(pdev)) | |
474 | return -ERANGE; | |
475 | ||
476 | if (num_vfs == pdev->sriov->num_VFs) | |
477 | return count; /* no change */ | |
1789382a DD |
478 | |
479 | /* is PF driver loaded w/callback */ | |
480 | if (!pdev->driver || !pdev->driver->sriov_configure) { | |
faa48a50 | 481 | dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n"); |
1789382a DD |
482 | return -ENOSYS; |
483 | } | |
484 | ||
faa48a50 BH |
485 | if (num_vfs == 0) { |
486 | /* disable VFs */ | |
487 | ret = pdev->driver->sriov_configure(pdev, 0); | |
488 | if (ret < 0) | |
489 | return ret; | |
490 | return count; | |
1789382a DD |
491 | } |
492 | ||
faa48a50 BH |
493 | /* enable VFs */ |
494 | if (pdev->sriov->num_VFs) { | |
495 | dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n", | |
496 | pdev->sriov->num_VFs, num_vfs); | |
497 | return -EBUSY; | |
1789382a DD |
498 | } |
499 | ||
faa48a50 BH |
500 | ret = pdev->driver->sriov_configure(pdev, num_vfs); |
501 | if (ret < 0) | |
502 | return ret; | |
1789382a | 503 | |
faa48a50 BH |
504 | if (ret != num_vfs) |
505 | dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n", | |
506 | num_vfs, ret); | |
507 | ||
508 | return count; | |
1789382a DD |
509 | } |
510 | ||
511 | static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); | |
512 | static struct device_attribute sriov_numvfs_attr = | |
513 | __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), | |
514 | sriov_numvfs_show, sriov_numvfs_store); | |
515 | #endif /* CONFIG_PCI_IOV */ | |
516 | ||
782a985d AW |
517 | static ssize_t driver_override_store(struct device *dev, |
518 | struct device_attribute *attr, | |
519 | const char *buf, size_t count) | |
520 | { | |
521 | struct pci_dev *pdev = to_pci_dev(dev); | |
522 | char *driver_override, *old = pdev->driver_override, *cp; | |
523 | ||
524 | if (count > PATH_MAX) | |
525 | return -EINVAL; | |
526 | ||
527 | driver_override = kstrndup(buf, count, GFP_KERNEL); | |
528 | if (!driver_override) | |
529 | return -ENOMEM; | |
530 | ||
531 | cp = strchr(driver_override, '\n'); | |
532 | if (cp) | |
533 | *cp = '\0'; | |
534 | ||
535 | if (strlen(driver_override)) { | |
536 | pdev->driver_override = driver_override; | |
537 | } else { | |
538 | kfree(driver_override); | |
539 | pdev->driver_override = NULL; | |
540 | } | |
541 | ||
542 | kfree(old); | |
543 | ||
544 | return count; | |
545 | } | |
546 | ||
547 | static ssize_t driver_override_show(struct device *dev, | |
548 | struct device_attribute *attr, char *buf) | |
549 | { | |
550 | struct pci_dev *pdev = to_pci_dev(dev); | |
551 | ||
552 | return sprintf(buf, "%s\n", pdev->driver_override); | |
553 | } | |
554 | static DEVICE_ATTR_RW(driver_override); | |
555 | ||
bf22c90f | 556 | static struct attribute *pci_dev_attrs[] = { |
5136b2da GKH |
557 | &dev_attr_resource.attr, |
558 | &dev_attr_vendor.attr, | |
559 | &dev_attr_device.attr, | |
560 | &dev_attr_subsystem_vendor.attr, | |
561 | &dev_attr_subsystem_device.attr, | |
562 | &dev_attr_class.attr, | |
563 | &dev_attr_irq.attr, | |
564 | &dev_attr_local_cpus.attr, | |
565 | &dev_attr_local_cpulist.attr, | |
566 | &dev_attr_modalias.attr, | |
81bb0e19 | 567 | #ifdef CONFIG_NUMA |
5136b2da | 568 | &dev_attr_numa_node.attr, |
81bb0e19 | 569 | #endif |
5136b2da GKH |
570 | &dev_attr_dma_mask_bits.attr, |
571 | &dev_attr_consistent_dma_mask_bits.attr, | |
572 | &dev_attr_enabled.attr, | |
573 | &dev_attr_broken_parity_status.attr, | |
574 | &dev_attr_msi_bus.attr, | |
448bd857 | 575 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
5136b2da | 576 | &dev_attr_d3cold_allowed.attr, |
dfc73e7a SO |
577 | #endif |
578 | #ifdef CONFIG_OF | |
579 | &dev_attr_devspec.attr, | |
77c27c7b | 580 | #endif |
782a985d | 581 | &dev_attr_driver_override.attr, |
5136b2da GKH |
582 | NULL, |
583 | }; | |
584 | ||
585 | static const struct attribute_group pci_dev_group = { | |
586 | .attrs = pci_dev_attrs, | |
587 | }; | |
588 | ||
589 | const struct attribute_group *pci_dev_groups[] = { | |
590 | &pci_dev_group, | |
591 | NULL, | |
1da177e4 LT |
592 | }; |
593 | ||
56039e65 GKH |
594 | static struct attribute *pcibus_attrs[] = { |
595 | &dev_attr_rescan.attr, | |
596 | &dev_attr_cpuaffinity.attr, | |
597 | &dev_attr_cpulistaffinity.attr, | |
598 | NULL, | |
599 | }; | |
600 | ||
601 | static const struct attribute_group pcibus_group = { | |
602 | .attrs = pcibus_attrs, | |
603 | }; | |
604 | ||
605 | const struct attribute_group *pcibus_groups[] = { | |
606 | &pcibus_group, | |
607 | NULL, | |
b9d320fc YL |
608 | }; |
609 | ||
217f45de DA |
610 | static ssize_t |
611 | boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf) | |
612 | { | |
613 | struct pci_dev *pdev = to_pci_dev(dev); | |
1a39b310 MG |
614 | struct pci_dev *vga_dev = vga_default_device(); |
615 | ||
616 | if (vga_dev) | |
617 | return sprintf(buf, "%u\n", (pdev == vga_dev)); | |
217f45de DA |
618 | |
619 | return sprintf(buf, "%u\n", | |
620 | !!(pdev->resource[PCI_ROM_RESOURCE].flags & | |
621 | IORESOURCE_ROM_SHADOW)); | |
622 | } | |
bf22c90f | 623 | static struct device_attribute vga_attr = __ATTR_RO(boot_vga); |
217f45de | 624 | |
1da177e4 | 625 | static ssize_t |
2c3c8bea CW |
626 | pci_read_config(struct file *filp, struct kobject *kobj, |
627 | struct bin_attribute *bin_attr, | |
91a69029 | 628 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
629 | { |
630 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
631 | unsigned int size = 64; | |
632 | loff_t init_off = off; | |
4c0619ad | 633 | u8 *data = (u8*) buf; |
1da177e4 LT |
634 | |
635 | /* Several chips lock up trying to read undefined config space */ | |
b7e724d3 | 636 | if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0) { |
1da177e4 LT |
637 | size = dev->cfg_size; |
638 | } else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) { | |
639 | size = 128; | |
640 | } | |
641 | ||
642 | if (off > size) | |
643 | return 0; | |
644 | if (off + count > size) { | |
645 | size -= off; | |
646 | count = size; | |
647 | } else { | |
648 | size = count; | |
649 | } | |
650 | ||
3d8387ef HY |
651 | pci_config_pm_runtime_get(dev); |
652 | ||
4c0619ad | 653 | if ((off & 1) && size) { |
654 | u8 val; | |
e04b0ea2 | 655 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 656 | data[off - init_off] = val; |
1da177e4 | 657 | off++; |
4c0619ad | 658 | size--; |
659 | } | |
660 | ||
661 | if ((off & 3) && size > 2) { | |
662 | u16 val; | |
e04b0ea2 | 663 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 664 | data[off - init_off] = val & 0xff; |
665 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
666 | off += 2; | |
667 | size -= 2; | |
1da177e4 LT |
668 | } |
669 | ||
670 | while (size > 3) { | |
4c0619ad | 671 | u32 val; |
e04b0ea2 | 672 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad | 673 | data[off - init_off] = val & 0xff; |
674 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
675 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
676 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
677 | off += 4; |
678 | size -= 4; | |
679 | } | |
680 | ||
4c0619ad | 681 | if (size >= 2) { |
682 | u16 val; | |
e04b0ea2 | 683 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 684 | data[off - init_off] = val & 0xff; |
685 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
686 | off += 2; | |
687 | size -= 2; | |
688 | } | |
689 | ||
690 | if (size > 0) { | |
691 | u8 val; | |
e04b0ea2 | 692 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 693 | data[off - init_off] = val; |
1da177e4 LT |
694 | off++; |
695 | --size; | |
696 | } | |
697 | ||
3d8387ef HY |
698 | pci_config_pm_runtime_put(dev); |
699 | ||
1da177e4 LT |
700 | return count; |
701 | } | |
702 | ||
703 | static ssize_t | |
2c3c8bea CW |
704 | pci_write_config(struct file* filp, struct kobject *kobj, |
705 | struct bin_attribute *bin_attr, | |
91a69029 | 706 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
707 | { |
708 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
709 | unsigned int size = count; | |
710 | loff_t init_off = off; | |
4c0619ad | 711 | u8 *data = (u8*) buf; |
1da177e4 LT |
712 | |
713 | if (off > dev->cfg_size) | |
714 | return 0; | |
715 | if (off + count > dev->cfg_size) { | |
716 | size = dev->cfg_size - off; | |
717 | count = size; | |
718 | } | |
f7625980 | 719 | |
3d8387ef HY |
720 | pci_config_pm_runtime_get(dev); |
721 | ||
4c0619ad | 722 | if ((off & 1) && size) { |
e04b0ea2 | 723 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 724 | off++; |
4c0619ad | 725 | size--; |
1da177e4 | 726 | } |
f7625980 | 727 | |
4c0619ad | 728 | if ((off & 3) && size > 2) { |
729 | u16 val = data[off - init_off]; | |
730 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 731 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 732 | off += 2; |
733 | size -= 2; | |
734 | } | |
1da177e4 LT |
735 | |
736 | while (size > 3) { | |
4c0619ad | 737 | u32 val = data[off - init_off]; |
738 | val |= (u32) data[off - init_off + 1] << 8; | |
739 | val |= (u32) data[off - init_off + 2] << 16; | |
740 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 741 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
742 | off += 4; |
743 | size -= 4; | |
744 | } | |
f7625980 | 745 | |
4c0619ad | 746 | if (size >= 2) { |
747 | u16 val = data[off - init_off]; | |
748 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 749 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 750 | off += 2; |
751 | size -= 2; | |
752 | } | |
1da177e4 | 753 | |
4c0619ad | 754 | if (size) { |
e04b0ea2 | 755 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
756 | off++; |
757 | --size; | |
758 | } | |
759 | ||
3d8387ef HY |
760 | pci_config_pm_runtime_put(dev); |
761 | ||
1da177e4 LT |
762 | return count; |
763 | } | |
764 | ||
94e61088 | 765 | static ssize_t |
2c3c8bea CW |
766 | read_vpd_attr(struct file *filp, struct kobject *kobj, |
767 | struct bin_attribute *bin_attr, | |
287d19ce | 768 | char *buf, loff_t off, size_t count) |
94e61088 BH |
769 | { |
770 | struct pci_dev *dev = | |
771 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
772 | |
773 | if (off > bin_attr->size) | |
774 | count = 0; | |
775 | else if (count > bin_attr->size - off) | |
776 | count = bin_attr->size - off; | |
94e61088 | 777 | |
287d19ce | 778 | return pci_read_vpd(dev, off, count, buf); |
94e61088 BH |
779 | } |
780 | ||
781 | static ssize_t | |
2c3c8bea CW |
782 | write_vpd_attr(struct file *filp, struct kobject *kobj, |
783 | struct bin_attribute *bin_attr, | |
287d19ce | 784 | char *buf, loff_t off, size_t count) |
94e61088 BH |
785 | { |
786 | struct pci_dev *dev = | |
787 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
788 | |
789 | if (off > bin_attr->size) | |
790 | count = 0; | |
791 | else if (count > bin_attr->size - off) | |
792 | count = bin_attr->size - off; | |
94e61088 | 793 | |
287d19ce | 794 | return pci_write_vpd(dev, off, count, buf); |
94e61088 BH |
795 | } |
796 | ||
1da177e4 LT |
797 | #ifdef HAVE_PCI_LEGACY |
798 | /** | |
799 | * pci_read_legacy_io - read byte(s) from legacy I/O port space | |
2c3c8bea | 800 | * @filp: open sysfs file |
1da177e4 | 801 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 802 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
803 | * @buf: buffer to store results |
804 | * @off: offset into legacy I/O port space | |
805 | * @count: number of bytes to read | |
806 | * | |
807 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
808 | * callback routine (pci_legacy_read). | |
809 | */ | |
f19aeb1f | 810 | static ssize_t |
2c3c8bea CW |
811 | pci_read_legacy_io(struct file *filp, struct kobject *kobj, |
812 | struct bin_attribute *bin_attr, | |
91a69029 | 813 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
814 | { |
815 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 816 | struct device, |
1da177e4 LT |
817 | kobj)); |
818 | ||
819 | /* Only support 1, 2 or 4 byte accesses */ | |
820 | if (count != 1 && count != 2 && count != 4) | |
821 | return -EINVAL; | |
822 | ||
823 | return pci_legacy_read(bus, off, (u32 *)buf, count); | |
824 | } | |
825 | ||
826 | /** | |
827 | * pci_write_legacy_io - write byte(s) to legacy I/O port space | |
2c3c8bea | 828 | * @filp: open sysfs file |
1da177e4 | 829 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 830 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
831 | * @buf: buffer containing value to be written |
832 | * @off: offset into legacy I/O port space | |
833 | * @count: number of bytes to write | |
834 | * | |
835 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
836 | * callback routine (pci_legacy_write). | |
837 | */ | |
f19aeb1f | 838 | static ssize_t |
2c3c8bea CW |
839 | pci_write_legacy_io(struct file *filp, struct kobject *kobj, |
840 | struct bin_attribute *bin_attr, | |
91a69029 | 841 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
842 | { |
843 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 844 | struct device, |
1da177e4 LT |
845 | kobj)); |
846 | /* Only support 1, 2 or 4 byte accesses */ | |
847 | if (count != 1 && count != 2 && count != 4) | |
848 | return -EINVAL; | |
849 | ||
850 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
851 | } | |
852 | ||
853 | /** | |
854 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
2c3c8bea | 855 | * @filp: open sysfs file |
1da177e4 LT |
856 | * @kobj: kobject corresponding to device to be mapped |
857 | * @attr: struct bin_attribute for this file | |
858 | * @vma: struct vm_area_struct passed to mmap | |
859 | * | |
f19aeb1f | 860 | * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap |
1da177e4 LT |
861 | * legacy memory space (first meg of bus space) into application virtual |
862 | * memory space. | |
863 | */ | |
f19aeb1f | 864 | static int |
2c3c8bea CW |
865 | pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, |
866 | struct bin_attribute *attr, | |
1da177e4 LT |
867 | struct vm_area_struct *vma) |
868 | { | |
869 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
fd7d1ced | 870 | struct device, |
1da177e4 LT |
871 | kobj)); |
872 | ||
f19aeb1f BH |
873 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); |
874 | } | |
875 | ||
876 | /** | |
877 | * pci_mmap_legacy_io - map legacy PCI IO into user memory space | |
2c3c8bea | 878 | * @filp: open sysfs file |
f19aeb1f BH |
879 | * @kobj: kobject corresponding to device to be mapped |
880 | * @attr: struct bin_attribute for this file | |
881 | * @vma: struct vm_area_struct passed to mmap | |
882 | * | |
883 | * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap | |
884 | * legacy IO space (first meg of bus space) into application virtual | |
885 | * memory space. Returns -ENOSYS if the operation isn't supported | |
886 | */ | |
887 | static int | |
2c3c8bea CW |
888 | pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, |
889 | struct bin_attribute *attr, | |
f19aeb1f BH |
890 | struct vm_area_struct *vma) |
891 | { | |
892 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
893 | struct device, | |
894 | kobj)); | |
895 | ||
896 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); | |
897 | } | |
898 | ||
10a0ef39 IK |
899 | /** |
900 | * pci_adjust_legacy_attr - adjustment of legacy file attributes | |
901 | * @b: bus to create files under | |
902 | * @mmap_type: I/O port or memory | |
903 | * | |
904 | * Stub implementation. Can be overridden by arch if necessary. | |
905 | */ | |
906 | void __weak | |
907 | pci_adjust_legacy_attr(struct pci_bus *b, enum pci_mmap_state mmap_type) | |
908 | { | |
909 | return; | |
910 | } | |
911 | ||
f19aeb1f BH |
912 | /** |
913 | * pci_create_legacy_files - create legacy I/O port and memory files | |
914 | * @b: bus to create files under | |
915 | * | |
916 | * Some platforms allow access to legacy I/O port and ISA memory space on | |
917 | * a per-bus basis. This routine creates the files and ties them into | |
918 | * their associated read, write and mmap files from pci-sysfs.c | |
919 | * | |
25985edc | 920 | * On error unwind, but don't propagate the error to the caller |
f19aeb1f BH |
921 | * as it is ok to set up the PCI bus without these files. |
922 | */ | |
923 | void pci_create_legacy_files(struct pci_bus *b) | |
924 | { | |
925 | int error; | |
926 | ||
927 | b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, | |
928 | GFP_ATOMIC); | |
929 | if (!b->legacy_io) | |
930 | goto kzalloc_err; | |
931 | ||
62e877b8 | 932 | sysfs_bin_attr_init(b->legacy_io); |
f19aeb1f BH |
933 | b->legacy_io->attr.name = "legacy_io"; |
934 | b->legacy_io->size = 0xffff; | |
935 | b->legacy_io->attr.mode = S_IRUSR | S_IWUSR; | |
936 | b->legacy_io->read = pci_read_legacy_io; | |
937 | b->legacy_io->write = pci_write_legacy_io; | |
938 | b->legacy_io->mmap = pci_mmap_legacy_io; | |
10a0ef39 | 939 | pci_adjust_legacy_attr(b, pci_mmap_io); |
f19aeb1f BH |
940 | error = device_create_bin_file(&b->dev, b->legacy_io); |
941 | if (error) | |
942 | goto legacy_io_err; | |
943 | ||
944 | /* Allocated above after the legacy_io struct */ | |
945 | b->legacy_mem = b->legacy_io + 1; | |
6757eca3 | 946 | sysfs_bin_attr_init(b->legacy_mem); |
f19aeb1f BH |
947 | b->legacy_mem->attr.name = "legacy_mem"; |
948 | b->legacy_mem->size = 1024*1024; | |
949 | b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR; | |
950 | b->legacy_mem->mmap = pci_mmap_legacy_mem; | |
10a0ef39 | 951 | pci_adjust_legacy_attr(b, pci_mmap_mem); |
f19aeb1f BH |
952 | error = device_create_bin_file(&b->dev, b->legacy_mem); |
953 | if (error) | |
954 | goto legacy_mem_err; | |
955 | ||
956 | return; | |
957 | ||
958 | legacy_mem_err: | |
959 | device_remove_bin_file(&b->dev, b->legacy_io); | |
960 | legacy_io_err: | |
961 | kfree(b->legacy_io); | |
962 | b->legacy_io = NULL; | |
963 | kzalloc_err: | |
964 | printk(KERN_WARNING "pci: warning: could not create legacy I/O port " | |
965 | "and ISA memory resources to sysfs\n"); | |
966 | return; | |
967 | } | |
968 | ||
969 | void pci_remove_legacy_files(struct pci_bus *b) | |
970 | { | |
971 | if (b->legacy_io) { | |
972 | device_remove_bin_file(&b->dev, b->legacy_io); | |
973 | device_remove_bin_file(&b->dev, b->legacy_mem); | |
974 | kfree(b->legacy_io); /* both are allocated here */ | |
975 | } | |
1da177e4 LT |
976 | } |
977 | #endif /* HAVE_PCI_LEGACY */ | |
978 | ||
979 | #ifdef HAVE_PCI_MMAP | |
b5ff7df3 | 980 | |
3b519e4e MW |
981 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, |
982 | enum pci_mmap_api mmap_api) | |
b5ff7df3 | 983 | { |
3b519e4e | 984 | unsigned long nr, start, size, pci_start; |
b5ff7df3 | 985 | |
3b519e4e MW |
986 | if (pci_resource_len(pdev, resno) == 0) |
987 | return 0; | |
64b00175 | 988 | nr = vma_pages(vma); |
b5ff7df3 | 989 | start = vma->vm_pgoff; |
88e7df0b | 990 | size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; |
8c05cd08 | 991 | pci_start = (mmap_api == PCI_MMAP_PROCFS) ? |
3b519e4e MW |
992 | pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; |
993 | if (start >= pci_start && start < pci_start + size && | |
994 | start + nr <= pci_start + size) | |
b5ff7df3 | 995 | return 1; |
b5ff7df3 LT |
996 | return 0; |
997 | } | |
998 | ||
1da177e4 LT |
999 | /** |
1000 | * pci_mmap_resource - map a PCI resource into user memory space | |
1001 | * @kobj: kobject for mapping | |
1002 | * @attr: struct bin_attribute for the file being mapped | |
1003 | * @vma: struct vm_area_struct passed into the mmap | |
45aec1ae | 1004 | * @write_combine: 1 for write_combine mapping |
1da177e4 LT |
1005 | * |
1006 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
1da177e4 LT |
1007 | */ |
1008 | static int | |
1009 | pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, | |
45aec1ae | 1010 | struct vm_area_struct *vma, int write_combine) |
1da177e4 LT |
1011 | { |
1012 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
1013 | struct device, kobj)); | |
a3f5835a | 1014 | struct resource *res = attr->private; |
1da177e4 | 1015 | enum pci_mmap_state mmap_type; |
e31dd6e4 | 1016 | resource_size_t start, end; |
2311b1f2 | 1017 | int i; |
1da177e4 | 1018 | |
2311b1f2 ME |
1019 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
1020 | if (res == &pdev->resource[i]) | |
1021 | break; | |
1022 | if (i >= PCI_ROM_RESOURCE) | |
1023 | return -ENODEV; | |
1024 | ||
3b519e4e MW |
1025 | if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { |
1026 | WARN(1, "process \"%s\" tried to map 0x%08lx bytes " | |
1027 | "at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n", | |
1028 | current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, | |
1029 | pci_name(pdev), i, | |
e25cd062 RD |
1030 | (u64)pci_resource_start(pdev, i), |
1031 | (u64)pci_resource_len(pdev, i)); | |
b5ff7df3 | 1032 | return -EINVAL; |
3b519e4e | 1033 | } |
b5ff7df3 | 1034 | |
2311b1f2 ME |
1035 | /* pci_mmap_page_range() expects the same kind of entry as coming |
1036 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
1037 | * different from the resource itself, arch will do necessary fixup. | |
1038 | */ | |
1039 | pci_resource_to_user(pdev, i, res, &start, &end); | |
1040 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 LT |
1041 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
1042 | ||
e8de1481 AV |
1043 | if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start)) |
1044 | return -EINVAL; | |
1045 | ||
45aec1ae | 1046 | return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); |
1047 | } | |
1048 | ||
1049 | static int | |
2c3c8bea CW |
1050 | pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, |
1051 | struct bin_attribute *attr, | |
45aec1ae | 1052 | struct vm_area_struct *vma) |
1053 | { | |
1054 | return pci_mmap_resource(kobj, attr, vma, 0); | |
1055 | } | |
1056 | ||
1057 | static int | |
2c3c8bea CW |
1058 | pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, |
1059 | struct bin_attribute *attr, | |
45aec1ae | 1060 | struct vm_area_struct *vma) |
1061 | { | |
1062 | return pci_mmap_resource(kobj, attr, vma, 1); | |
1da177e4 LT |
1063 | } |
1064 | ||
8633328b AW |
1065 | static ssize_t |
1066 | pci_resource_io(struct file *filp, struct kobject *kobj, | |
1067 | struct bin_attribute *attr, char *buf, | |
1068 | loff_t off, size_t count, bool write) | |
1069 | { | |
1070 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
1071 | struct device, kobj)); | |
1072 | struct resource *res = attr->private; | |
1073 | unsigned long port = off; | |
1074 | int i; | |
1075 | ||
1076 | for (i = 0; i < PCI_ROM_RESOURCE; i++) | |
1077 | if (res == &pdev->resource[i]) | |
1078 | break; | |
1079 | if (i >= PCI_ROM_RESOURCE) | |
1080 | return -ENODEV; | |
1081 | ||
1082 | port += pci_resource_start(pdev, i); | |
1083 | ||
1084 | if (port > pci_resource_end(pdev, i)) | |
1085 | return 0; | |
1086 | ||
1087 | if (port + count - 1 > pci_resource_end(pdev, i)) | |
1088 | return -EINVAL; | |
1089 | ||
1090 | switch (count) { | |
1091 | case 1: | |
1092 | if (write) | |
1093 | outb(*(u8 *)buf, port); | |
1094 | else | |
1095 | *(u8 *)buf = inb(port); | |
1096 | return 1; | |
1097 | case 2: | |
1098 | if (write) | |
1099 | outw(*(u16 *)buf, port); | |
1100 | else | |
1101 | *(u16 *)buf = inw(port); | |
1102 | return 2; | |
1103 | case 4: | |
1104 | if (write) | |
1105 | outl(*(u32 *)buf, port); | |
1106 | else | |
1107 | *(u32 *)buf = inl(port); | |
1108 | return 4; | |
1109 | } | |
1110 | return -EINVAL; | |
1111 | } | |
1112 | ||
1113 | static ssize_t | |
1114 | pci_read_resource_io(struct file *filp, struct kobject *kobj, | |
1115 | struct bin_attribute *attr, char *buf, | |
1116 | loff_t off, size_t count) | |
1117 | { | |
1118 | return pci_resource_io(filp, kobj, attr, buf, off, count, false); | |
1119 | } | |
1120 | ||
1121 | static ssize_t | |
1122 | pci_write_resource_io(struct file *filp, struct kobject *kobj, | |
1123 | struct bin_attribute *attr, char *buf, | |
1124 | loff_t off, size_t count) | |
1125 | { | |
1126 | return pci_resource_io(filp, kobj, attr, buf, off, count, true); | |
1127 | } | |
1128 | ||
b19441af GKH |
1129 | /** |
1130 | * pci_remove_resource_files - cleanup resource files | |
cffb2faf | 1131 | * @pdev: dev to cleanup |
b19441af | 1132 | * |
cffb2faf | 1133 | * If we created resource files for @pdev, remove them from sysfs and |
b19441af GKH |
1134 | * free their resources. |
1135 | */ | |
1136 | static void | |
1137 | pci_remove_resource_files(struct pci_dev *pdev) | |
1138 | { | |
1139 | int i; | |
1140 | ||
1141 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1142 | struct bin_attribute *res_attr; | |
1143 | ||
1144 | res_attr = pdev->res_attr[i]; | |
1145 | if (res_attr) { | |
1146 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1147 | kfree(res_attr); | |
1148 | } | |
45aec1ae | 1149 | |
1150 | res_attr = pdev->res_attr_wc[i]; | |
1151 | if (res_attr) { | |
1152 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1153 | kfree(res_attr); | |
1154 | } | |
b19441af GKH |
1155 | } |
1156 | } | |
1157 | ||
45aec1ae | 1158 | static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) |
1159 | { | |
1160 | /* allocate attribute structure, piggyback attribute name */ | |
1161 | int name_len = write_combine ? 13 : 10; | |
1162 | struct bin_attribute *res_attr; | |
1163 | int retval; | |
1164 | ||
1165 | res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); | |
1166 | if (res_attr) { | |
1167 | char *res_attr_name = (char *)(res_attr + 1); | |
1168 | ||
a07e4156 | 1169 | sysfs_bin_attr_init(res_attr); |
45aec1ae | 1170 | if (write_combine) { |
1171 | pdev->res_attr_wc[num] = res_attr; | |
1172 | sprintf(res_attr_name, "resource%d_wc", num); | |
1173 | res_attr->mmap = pci_mmap_resource_wc; | |
1174 | } else { | |
1175 | pdev->res_attr[num] = res_attr; | |
1176 | sprintf(res_attr_name, "resource%d", num); | |
1177 | res_attr->mmap = pci_mmap_resource_uc; | |
1178 | } | |
8633328b AW |
1179 | if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { |
1180 | res_attr->read = pci_read_resource_io; | |
1181 | res_attr->write = pci_write_resource_io; | |
1182 | } | |
45aec1ae | 1183 | res_attr->attr.name = res_attr_name; |
1184 | res_attr->attr.mode = S_IRUSR | S_IWUSR; | |
1185 | res_attr->size = pci_resource_len(pdev, num); | |
1186 | res_attr->private = &pdev->resource[num]; | |
1187 | retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
1188 | } else | |
1189 | retval = -ENOMEM; | |
1190 | ||
1191 | return retval; | |
1192 | } | |
1193 | ||
1da177e4 LT |
1194 | /** |
1195 | * pci_create_resource_files - create resource files in sysfs for @dev | |
cffb2faf | 1196 | * @pdev: dev in question |
1da177e4 | 1197 | * |
cffb2faf | 1198 | * Walk the resources in @pdev creating files for each resource available. |
1da177e4 | 1199 | */ |
b19441af | 1200 | static int pci_create_resource_files(struct pci_dev *pdev) |
1da177e4 LT |
1201 | { |
1202 | int i; | |
b19441af | 1203 | int retval; |
1da177e4 LT |
1204 | |
1205 | /* Expose the PCI resources from this device as files */ | |
1206 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1da177e4 LT |
1207 | |
1208 | /* skip empty resources */ | |
1209 | if (!pci_resource_len(pdev, i)) | |
1210 | continue; | |
1211 | ||
45aec1ae | 1212 | retval = pci_create_attr(pdev, i, 0); |
1213 | /* for prefetchable resources, create a WC mappable file */ | |
1214 | if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) | |
1215 | retval = pci_create_attr(pdev, i, 1); | |
1216 | ||
1217 | if (retval) { | |
1218 | pci_remove_resource_files(pdev); | |
1219 | return retval; | |
1da177e4 LT |
1220 | } |
1221 | } | |
b19441af | 1222 | return 0; |
1da177e4 LT |
1223 | } |
1224 | #else /* !HAVE_PCI_MMAP */ | |
10a0ef39 IK |
1225 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } |
1226 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } | |
1da177e4 LT |
1227 | #endif /* HAVE_PCI_MMAP */ |
1228 | ||
1229 | /** | |
1230 | * pci_write_rom - used to enable access to the PCI ROM display | |
2c3c8bea | 1231 | * @filp: sysfs file |
1da177e4 | 1232 | * @kobj: kernel object handle |
cffb2faf | 1233 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1234 | * @buf: user input |
1235 | * @off: file offset | |
1236 | * @count: number of byte in input | |
1237 | * | |
1238 | * writing anything except 0 enables it | |
1239 | */ | |
1240 | static ssize_t | |
2c3c8bea CW |
1241 | pci_write_rom(struct file *filp, struct kobject *kobj, |
1242 | struct bin_attribute *bin_attr, | |
91a69029 | 1243 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1244 | { |
1245 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1246 | ||
1247 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
1248 | pdev->rom_attr_enabled = 0; | |
1249 | else | |
1250 | pdev->rom_attr_enabled = 1; | |
1251 | ||
1252 | return count; | |
1253 | } | |
1254 | ||
1255 | /** | |
1256 | * pci_read_rom - read a PCI ROM | |
2c3c8bea | 1257 | * @filp: sysfs file |
1da177e4 | 1258 | * @kobj: kernel object handle |
cffb2faf | 1259 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1260 | * @buf: where to put the data we read from the ROM |
1261 | * @off: file offset | |
1262 | * @count: number of bytes to read | |
1263 | * | |
1264 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
1265 | * device corresponding to @kobj. | |
1266 | */ | |
1267 | static ssize_t | |
2c3c8bea CW |
1268 | pci_read_rom(struct file *filp, struct kobject *kobj, |
1269 | struct bin_attribute *bin_attr, | |
91a69029 | 1270 | char *buf, loff_t off, size_t count) |
1da177e4 LT |
1271 | { |
1272 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1273 | void __iomem *rom; | |
1274 | size_t size; | |
1275 | ||
1276 | if (!pdev->rom_attr_enabled) | |
1277 | return -EINVAL; | |
f7625980 | 1278 | |
1da177e4 | 1279 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ |
97c44836 TN |
1280 | if (!rom || !size) |
1281 | return -EIO; | |
f7625980 | 1282 | |
1da177e4 LT |
1283 | if (off >= size) |
1284 | count = 0; | |
1285 | else { | |
1286 | if (off + count > size) | |
1287 | count = size - off; | |
f7625980 | 1288 | |
1da177e4 LT |
1289 | memcpy_fromio(buf, rom + off, count); |
1290 | } | |
1291 | pci_unmap_rom(pdev, rom); | |
f7625980 | 1292 | |
1da177e4 LT |
1293 | return count; |
1294 | } | |
1295 | ||
1296 | static struct bin_attribute pci_config_attr = { | |
1297 | .attr = { | |
1298 | .name = "config", | |
1299 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1300 | }, |
557848c3 | 1301 | .size = PCI_CFG_SPACE_SIZE, |
1da177e4 LT |
1302 | .read = pci_read_config, |
1303 | .write = pci_write_config, | |
1304 | }; | |
1305 | ||
1306 | static struct bin_attribute pcie_config_attr = { | |
1307 | .attr = { | |
1308 | .name = "config", | |
1309 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1310 | }, |
557848c3 | 1311 | .size = PCI_CFG_SPACE_EXP_SIZE, |
1da177e4 LT |
1312 | .read = pci_read_config, |
1313 | .write = pci_write_config, | |
1314 | }; | |
1315 | ||
711d5779 MT |
1316 | static ssize_t reset_store(struct device *dev, |
1317 | struct device_attribute *attr, const char *buf, | |
1318 | size_t count) | |
1319 | { | |
1320 | struct pci_dev *pdev = to_pci_dev(dev); | |
1321 | unsigned long val; | |
9a994e8e | 1322 | ssize_t result = kstrtoul(buf, 0, &val); |
711d5779 MT |
1323 | |
1324 | if (result < 0) | |
1325 | return result; | |
1326 | ||
1327 | if (val != 1) | |
1328 | return -EINVAL; | |
447c5dd7 MS |
1329 | |
1330 | result = pci_reset_function(pdev); | |
1331 | if (result < 0) | |
1332 | return result; | |
1333 | ||
1334 | return count; | |
711d5779 MT |
1335 | } |
1336 | ||
1337 | static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store); | |
1338 | ||
280c73d3 ZY |
1339 | static int pci_create_capabilities_sysfs(struct pci_dev *dev) |
1340 | { | |
1341 | int retval; | |
1342 | struct bin_attribute *attr; | |
1343 | ||
1344 | /* If the device has VPD, try to expose it in sysfs. */ | |
1345 | if (dev->vpd) { | |
1346 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); | |
1347 | if (!attr) | |
1348 | return -ENOMEM; | |
1349 | ||
a07e4156 | 1350 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1351 | attr->size = dev->vpd->len; |
1352 | attr->attr.name = "vpd"; | |
1353 | attr->attr.mode = S_IRUSR | S_IWUSR; | |
287d19ce SH |
1354 | attr->read = read_vpd_attr; |
1355 | attr->write = write_vpd_attr; | |
280c73d3 ZY |
1356 | retval = sysfs_create_bin_file(&dev->dev.kobj, attr); |
1357 | if (retval) { | |
0f12a4e2 | 1358 | kfree(attr); |
280c73d3 ZY |
1359 | return retval; |
1360 | } | |
1361 | dev->vpd->attr = attr; | |
1362 | } | |
1363 | ||
1364 | /* Active State Power Management */ | |
1365 | pcie_aspm_create_sysfs_dev_files(dev); | |
1366 | ||
711d5779 MT |
1367 | if (!pci_probe_reset_function(dev)) { |
1368 | retval = device_create_file(&dev->dev, &reset_attr); | |
1369 | if (retval) | |
1370 | goto error; | |
1371 | dev->reset_fn = 1; | |
1372 | } | |
280c73d3 | 1373 | return 0; |
711d5779 MT |
1374 | |
1375 | error: | |
1376 | pcie_aspm_remove_sysfs_dev_files(dev); | |
1377 | if (dev->vpd && dev->vpd->attr) { | |
1378 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1379 | kfree(dev->vpd->attr); | |
1380 | } | |
1381 | ||
1382 | return retval; | |
280c73d3 ZY |
1383 | } |
1384 | ||
b19441af | 1385 | int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev) |
1da177e4 | 1386 | { |
b19441af | 1387 | int retval; |
280c73d3 ZY |
1388 | int rom_size = 0; |
1389 | struct bin_attribute *attr; | |
b19441af | 1390 | |
1da177e4 LT |
1391 | if (!sysfs_initialized) |
1392 | return -EACCES; | |
1393 | ||
557848c3 | 1394 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af | 1395 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1da177e4 | 1396 | else |
b19441af GKH |
1397 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
1398 | if (retval) | |
1399 | goto err; | |
1da177e4 | 1400 | |
b19441af GKH |
1401 | retval = pci_create_resource_files(pdev); |
1402 | if (retval) | |
280c73d3 ZY |
1403 | goto err_config_file; |
1404 | ||
1405 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) | |
1406 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1407 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1408 | rom_size = 0x20000; | |
1da177e4 LT |
1409 | |
1410 | /* If the device has a ROM, try to expose it in sysfs. */ | |
280c73d3 | 1411 | if (rom_size) { |
94e61088 | 1412 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); |
280c73d3 | 1413 | if (!attr) { |
b19441af | 1414 | retval = -ENOMEM; |
9890b12a | 1415 | goto err_resource_files; |
1da177e4 | 1416 | } |
a07e4156 | 1417 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1418 | attr->size = rom_size; |
1419 | attr->attr.name = "rom"; | |
ff29530e | 1420 | attr->attr.mode = S_IRUSR | S_IWUSR; |
280c73d3 ZY |
1421 | attr->read = pci_read_rom; |
1422 | attr->write = pci_write_rom; | |
1423 | retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); | |
1424 | if (retval) { | |
1425 | kfree(attr); | |
1426 | goto err_resource_files; | |
1427 | } | |
1428 | pdev->rom_attr = attr; | |
1da177e4 | 1429 | } |
280c73d3 | 1430 | |
280c73d3 ZY |
1431 | /* add sysfs entries for various capabilities */ |
1432 | retval = pci_create_capabilities_sysfs(pdev); | |
1433 | if (retval) | |
625e1d59 | 1434 | goto err_rom_file; |
7d715a6c | 1435 | |
911e1c9b N |
1436 | pci_create_firmware_label_files(pdev); |
1437 | ||
1da177e4 | 1438 | return 0; |
b19441af | 1439 | |
a2cd52ca | 1440 | err_rom_file: |
280c73d3 | 1441 | if (rom_size) { |
94e61088 | 1442 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
280c73d3 ZY |
1443 | kfree(pdev->rom_attr); |
1444 | pdev->rom_attr = NULL; | |
1445 | } | |
9890b12a ME |
1446 | err_resource_files: |
1447 | pci_remove_resource_files(pdev); | |
94e61088 | 1448 | err_config_file: |
557848c3 | 1449 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af GKH |
1450 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1451 | else | |
1452 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1453 | err: | |
1454 | return retval; | |
1da177e4 LT |
1455 | } |
1456 | ||
280c73d3 ZY |
1457 | static void pci_remove_capabilities_sysfs(struct pci_dev *dev) |
1458 | { | |
1459 | if (dev->vpd && dev->vpd->attr) { | |
1460 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1461 | kfree(dev->vpd->attr); | |
1462 | } | |
1463 | ||
1464 | pcie_aspm_remove_sysfs_dev_files(dev); | |
711d5779 MT |
1465 | if (dev->reset_fn) { |
1466 | device_remove_file(&dev->dev, &reset_attr); | |
1467 | dev->reset_fn = 0; | |
1468 | } | |
280c73d3 ZY |
1469 | } |
1470 | ||
1da177e4 LT |
1471 | /** |
1472 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
1473 | * @pdev: device whose entries we should free | |
1474 | * | |
1475 | * Cleanup when @pdev is removed from sysfs. | |
1476 | */ | |
1477 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
1478 | { | |
280c73d3 ZY |
1479 | int rom_size = 0; |
1480 | ||
d67afe5e DM |
1481 | if (!sysfs_initialized) |
1482 | return; | |
1483 | ||
280c73d3 | 1484 | pci_remove_capabilities_sysfs(pdev); |
7d715a6c | 1485 | |
557848c3 | 1486 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
1da177e4 LT |
1487 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1488 | else | |
1489 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1490 | ||
1491 | pci_remove_resource_files(pdev); | |
1492 | ||
280c73d3 ZY |
1493 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) |
1494 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1495 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1496 | rom_size = 0x20000; | |
1497 | ||
1498 | if (rom_size && pdev->rom_attr) { | |
1499 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); | |
1500 | kfree(pdev->rom_attr); | |
1da177e4 | 1501 | } |
911e1c9b N |
1502 | |
1503 | pci_remove_firmware_label_files(pdev); | |
1504 | ||
1da177e4 LT |
1505 | } |
1506 | ||
1507 | static int __init pci_sysfs_init(void) | |
1508 | { | |
1509 | struct pci_dev *pdev = NULL; | |
b19441af GKH |
1510 | int retval; |
1511 | ||
1da177e4 | 1512 | sysfs_initialized = 1; |
b19441af GKH |
1513 | for_each_pci_dev(pdev) { |
1514 | retval = pci_create_sysfs_dev_files(pdev); | |
151fc5df JL |
1515 | if (retval) { |
1516 | pci_dev_put(pdev); | |
b19441af | 1517 | return retval; |
151fc5df | 1518 | } |
b19441af | 1519 | } |
1da177e4 LT |
1520 | |
1521 | return 0; | |
1522 | } | |
1523 | ||
40ee9e9f | 1524 | late_initcall(pci_sysfs_init); |
4e15c46b YL |
1525 | |
1526 | static struct attribute *pci_dev_dev_attrs[] = { | |
625e1d59 | 1527 | &vga_attr.attr, |
4e15c46b YL |
1528 | NULL, |
1529 | }; | |
1530 | ||
1531 | static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, | |
1532 | struct attribute *a, int n) | |
1533 | { | |
625e1d59 YL |
1534 | struct device *dev = container_of(kobj, struct device, kobj); |
1535 | struct pci_dev *pdev = to_pci_dev(dev); | |
1536 | ||
1537 | if (a == &vga_attr.attr) | |
1538 | if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1539 | return 0; | |
1540 | ||
4e15c46b YL |
1541 | return a->mode; |
1542 | } | |
1543 | ||
dfab88be JL |
1544 | static struct attribute *pci_dev_hp_attrs[] = { |
1545 | &dev_remove_attr.attr, | |
1546 | &dev_rescan_attr.attr, | |
1547 | NULL, | |
1548 | }; | |
1549 | ||
1550 | static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, | |
1551 | struct attribute *a, int n) | |
1552 | { | |
1553 | struct device *dev = container_of(kobj, struct device, kobj); | |
1554 | struct pci_dev *pdev = to_pci_dev(dev); | |
1555 | ||
1556 | if (pdev->is_virtfn) | |
1557 | return 0; | |
1558 | ||
1559 | return a->mode; | |
1560 | } | |
1561 | ||
1562 | static struct attribute_group pci_dev_hp_attr_group = { | |
1563 | .attrs = pci_dev_hp_attrs, | |
1564 | .is_visible = pci_dev_hp_attrs_are_visible, | |
1565 | }; | |
1566 | ||
1789382a DD |
1567 | #ifdef CONFIG_PCI_IOV |
1568 | static struct attribute *sriov_dev_attrs[] = { | |
1569 | &sriov_totalvfs_attr.attr, | |
1570 | &sriov_numvfs_attr.attr, | |
1571 | NULL, | |
1572 | }; | |
1573 | ||
1574 | static umode_t sriov_attrs_are_visible(struct kobject *kobj, | |
1575 | struct attribute *a, int n) | |
1576 | { | |
1577 | struct device *dev = container_of(kobj, struct device, kobj); | |
1578 | ||
1579 | if (!dev_is_pf(dev)) | |
1580 | return 0; | |
1581 | ||
1582 | return a->mode; | |
1583 | } | |
1584 | ||
1585 | static struct attribute_group sriov_dev_attr_group = { | |
1586 | .attrs = sriov_dev_attrs, | |
1587 | .is_visible = sriov_attrs_are_visible, | |
1588 | }; | |
1589 | #endif /* CONFIG_PCI_IOV */ | |
1590 | ||
4e15c46b YL |
1591 | static struct attribute_group pci_dev_attr_group = { |
1592 | .attrs = pci_dev_dev_attrs, | |
1593 | .is_visible = pci_dev_attrs_are_visible, | |
1594 | }; | |
1595 | ||
1596 | static const struct attribute_group *pci_dev_attr_groups[] = { | |
1597 | &pci_dev_attr_group, | |
dfab88be | 1598 | &pci_dev_hp_attr_group, |
1789382a DD |
1599 | #ifdef CONFIG_PCI_IOV |
1600 | &sriov_dev_attr_group, | |
1601 | #endif | |
4e15c46b YL |
1602 | NULL, |
1603 | }; | |
1604 | ||
1605 | struct device_type pci_dev_type = { | |
1606 | .groups = pci_dev_attr_groups, | |
1607 | }; |