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 | \ | |
3c78bc61 RD |
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); | |
3c78bc61 | 61 | return sprintf(buf, "%u\n", pdev->broken_parity_status); |
bdee9d98 DT |
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 | |
3c78bc61 RD |
80 | static ssize_t pci_dev_show_local_cpu(struct device *dev, int type, |
81 | struct device_attribute *attr, char *buf) | |
c489f5fb | 82 | { |
3be83050 | 83 | const struct cpumask *mask; |
4327edf6 AC |
84 | int len; |
85 | ||
e0cd5160 | 86 | #ifdef CONFIG_NUMA |
6be954d1 DJ |
87 | mask = (dev_to_node(dev) == -1) ? cpu_online_mask : |
88 | cpumask_of_node(dev_to_node(dev)); | |
e0cd5160 | 89 | #else |
3be83050 | 90 | mask = cpumask_of_pcibus(to_pci_dev(dev)->bus); |
e0cd5160 | 91 | #endif |
c489f5fb YW |
92 | len = type ? |
93 | cpumask_scnprintf(buf, PAGE_SIZE-2, mask) : | |
94 | cpulist_scnprintf(buf, PAGE_SIZE-2, mask); | |
95 | ||
39106dcf MT |
96 | buf[len++] = '\n'; |
97 | buf[len] = '\0'; | |
98 | return len; | |
99 | } | |
100 | ||
c489f5fb | 101 | static ssize_t local_cpus_show(struct device *dev, |
3c78bc61 | 102 | struct device_attribute *attr, char *buf) |
c489f5fb YW |
103 | { |
104 | return pci_dev_show_local_cpu(dev, 1, attr, buf); | |
105 | } | |
5136b2da | 106 | static DEVICE_ATTR_RO(local_cpus); |
39106dcf MT |
107 | |
108 | static ssize_t local_cpulist_show(struct device *dev, | |
3c78bc61 | 109 | struct device_attribute *attr, char *buf) |
39106dcf | 110 | { |
c489f5fb | 111 | return pci_dev_show_local_cpu(dev, 0, attr, buf); |
1da177e4 | 112 | } |
5136b2da | 113 | static DEVICE_ATTR_RO(local_cpulist); |
1da177e4 | 114 | |
dc2c2c9d YL |
115 | /* |
116 | * PCI Bus Class Devices | |
117 | */ | |
3c78bc61 | 118 | static ssize_t pci_bus_show_cpuaffinity(struct device *dev, int type, |
dc2c2c9d YL |
119 | struct device_attribute *attr, |
120 | char *buf) | |
121 | { | |
122 | int ret; | |
123 | const struct cpumask *cpumask; | |
124 | ||
125 | cpumask = cpumask_of_pcibus(to_pci_bus(dev)); | |
126 | ret = type ? | |
127 | cpulist_scnprintf(buf, PAGE_SIZE-2, cpumask) : | |
128 | cpumask_scnprintf(buf, PAGE_SIZE-2, cpumask); | |
129 | buf[ret++] = '\n'; | |
130 | buf[ret] = '\0'; | |
131 | return ret; | |
132 | } | |
133 | ||
56039e65 GKH |
134 | static ssize_t cpuaffinity_show(struct device *dev, |
135 | struct device_attribute *attr, char *buf) | |
dc2c2c9d YL |
136 | { |
137 | return pci_bus_show_cpuaffinity(dev, 0, attr, buf); | |
138 | } | |
56039e65 | 139 | static DEVICE_ATTR_RO(cpuaffinity); |
dc2c2c9d | 140 | |
56039e65 GKH |
141 | static ssize_t cpulistaffinity_show(struct device *dev, |
142 | struct device_attribute *attr, char *buf) | |
dc2c2c9d YL |
143 | { |
144 | return pci_bus_show_cpuaffinity(dev, 1, attr, buf); | |
145 | } | |
56039e65 | 146 | static DEVICE_ATTR_RO(cpulistaffinity); |
dc2c2c9d | 147 | |
1da177e4 | 148 | /* show resources */ |
3c78bc61 RD |
149 | static ssize_t resource_show(struct device *dev, struct device_attribute *attr, |
150 | char *buf) | |
1da177e4 | 151 | { |
3c78bc61 RD |
152 | struct pci_dev *pci_dev = to_pci_dev(dev); |
153 | char *str = buf; | |
1da177e4 | 154 | int i; |
fde09c6d | 155 | int max; |
e31dd6e4 | 156 | resource_size_t start, end; |
1da177e4 LT |
157 | |
158 | if (pci_dev->subordinate) | |
159 | max = DEVICE_COUNT_RESOURCE; | |
fde09c6d YZ |
160 | else |
161 | max = PCI_BRIDGE_RESOURCES; | |
1da177e4 LT |
162 | |
163 | for (i = 0; i < max; i++) { | |
2311b1f2 ME |
164 | struct resource *res = &pci_dev->resource[i]; |
165 | pci_resource_to_user(pci_dev, i, res, &start, &end); | |
3c78bc61 | 166 | str += sprintf(str, "0x%016llx 0x%016llx 0x%016llx\n", |
2311b1f2 ME |
167 | (unsigned long long)start, |
168 | (unsigned long long)end, | |
169 | (unsigned long long)res->flags); | |
1da177e4 LT |
170 | } |
171 | return (str - buf); | |
172 | } | |
5136b2da | 173 | static DEVICE_ATTR_RO(resource); |
1da177e4 | 174 | |
3c78bc61 RD |
175 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, |
176 | char *buf) | |
9888549e GK |
177 | { |
178 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
179 | ||
180 | return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n", | |
181 | pci_dev->vendor, pci_dev->device, | |
182 | pci_dev->subsystem_vendor, pci_dev->subsystem_device, | |
183 | (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8), | |
184 | (u8)(pci_dev->class)); | |
185 | } | |
5136b2da | 186 | static DEVICE_ATTR_RO(modalias); |
bae94d02 | 187 | |
3c78bc61 RD |
188 | static ssize_t enabled_store(struct device *dev, struct device_attribute *attr, |
189 | const char *buf, size_t count) | |
9f125d30 AV |
190 | { |
191 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 192 | unsigned long val; |
9a994e8e | 193 | ssize_t result = kstrtoul(buf, 0, &val); |
92425a40 TP |
194 | |
195 | if (result < 0) | |
196 | return result; | |
9f125d30 AV |
197 | |
198 | /* this can crash the machine when done on the "wrong" device */ | |
199 | if (!capable(CAP_SYS_ADMIN)) | |
92425a40 | 200 | return -EPERM; |
9f125d30 | 201 | |
92425a40 | 202 | if (!val) { |
296ccb08 | 203 | if (pci_is_enabled(pdev)) |
bae94d02 IPG |
204 | pci_disable_device(pdev); |
205 | else | |
206 | result = -EIO; | |
92425a40 | 207 | } else |
bae94d02 | 208 | result = pci_enable_device(pdev); |
9f125d30 | 209 | |
bae94d02 IPG |
210 | return result < 0 ? result : count; |
211 | } | |
212 | ||
3c78bc61 RD |
213 | static ssize_t enabled_show(struct device *dev, struct device_attribute *attr, |
214 | char *buf) | |
bae94d02 IPG |
215 | { |
216 | struct pci_dev *pdev; | |
9f125d30 | 217 | |
3c78bc61 RD |
218 | pdev = to_pci_dev(dev); |
219 | return sprintf(buf, "%u\n", atomic_read(&pdev->enable_cnt)); | |
9f125d30 | 220 | } |
5136b2da | 221 | static DEVICE_ATTR_RW(enabled); |
9f125d30 | 222 | |
81bb0e19 | 223 | #ifdef CONFIG_NUMA |
3c78bc61 RD |
224 | static ssize_t numa_node_show(struct device *dev, struct device_attribute *attr, |
225 | char *buf) | |
81bb0e19 | 226 | { |
3c78bc61 | 227 | return sprintf(buf, "%d\n", dev->numa_node); |
81bb0e19 | 228 | } |
5136b2da | 229 | static DEVICE_ATTR_RO(numa_node); |
81bb0e19 BG |
230 | #endif |
231 | ||
3c78bc61 RD |
232 | static ssize_t dma_mask_bits_show(struct device *dev, |
233 | struct device_attribute *attr, char *buf) | |
bb965401 YL |
234 | { |
235 | struct pci_dev *pdev = to_pci_dev(dev); | |
236 | ||
3c78bc61 | 237 | return sprintf(buf, "%d\n", fls64(pdev->dma_mask)); |
bb965401 | 238 | } |
5136b2da | 239 | static DEVICE_ATTR_RO(dma_mask_bits); |
bb965401 | 240 | |
3c78bc61 RD |
241 | static ssize_t consistent_dma_mask_bits_show(struct device *dev, |
242 | struct device_attribute *attr, | |
243 | char *buf) | |
bb965401 | 244 | { |
3c78bc61 | 245 | return sprintf(buf, "%d\n", fls64(dev->coherent_dma_mask)); |
bb965401 | 246 | } |
5136b2da | 247 | static DEVICE_ATTR_RO(consistent_dma_mask_bits); |
bb965401 | 248 | |
3c78bc61 RD |
249 | static ssize_t msi_bus_show(struct device *dev, struct device_attribute *attr, |
250 | char *buf) | |
fe97064c BG |
251 | { |
252 | struct pci_dev *pdev = to_pci_dev(dev); | |
253 | ||
254 | if (!pdev->subordinate) | |
255 | return 0; | |
256 | ||
3c78bc61 RD |
257 | return sprintf(buf, "%u\n", |
258 | !(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI)); | |
fe97064c BG |
259 | } |
260 | ||
3c78bc61 RD |
261 | static ssize_t msi_bus_store(struct device *dev, struct device_attribute *attr, |
262 | const char *buf, size_t count) | |
fe97064c BG |
263 | { |
264 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 TP |
265 | unsigned long val; |
266 | ||
9a994e8e | 267 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 | 268 | return -EINVAL; |
fe97064c | 269 | |
f7625980 BH |
270 | /* |
271 | * Bad things may happen if the no_msi flag is changed | |
272 | * while drivers are loaded. | |
273 | */ | |
fe97064c | 274 | if (!capable(CAP_SYS_ADMIN)) |
92425a40 | 275 | return -EPERM; |
fe97064c | 276 | |
f7625980 BH |
277 | /* |
278 | * Maybe devices without subordinate buses shouldn't have this | |
279 | * attribute in the first place? | |
280 | */ | |
fe97064c BG |
281 | if (!pdev->subordinate) |
282 | return count; | |
283 | ||
92425a40 TP |
284 | /* Is the flag going to change, or keep the value it already had? */ |
285 | if (!(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI) ^ | |
286 | !!val) { | |
287 | pdev->subordinate->bus_flags ^= PCI_BUS_FLAGS_NO_MSI; | |
fe97064c | 288 | |
227f0647 RD |
289 | dev_warn(&pdev->dev, "forced subordinate bus to%s support MSI, bad things could happen\n", |
290 | val ? "" : " not"); | |
fe97064c BG |
291 | } |
292 | ||
293 | return count; | |
294 | } | |
5136b2da | 295 | static DEVICE_ATTR_RW(msi_bus); |
9888549e | 296 | |
705b1aaa AC |
297 | static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf, |
298 | size_t count) | |
299 | { | |
300 | unsigned long val; | |
301 | struct pci_bus *b = NULL; | |
302 | ||
9a994e8e | 303 | if (kstrtoul(buf, 0, &val) < 0) |
705b1aaa AC |
304 | return -EINVAL; |
305 | ||
306 | if (val) { | |
9d16947b | 307 | pci_lock_rescan_remove(); |
705b1aaa AC |
308 | while ((b = pci_find_next_bus(b)) != NULL) |
309 | pci_rescan_bus(b); | |
9d16947b | 310 | pci_unlock_rescan_remove(); |
705b1aaa AC |
311 | } |
312 | return count; | |
313 | } | |
0f49ba55 | 314 | static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store); |
705b1aaa | 315 | |
bf22c90f | 316 | static struct attribute *pci_bus_attrs[] = { |
0f49ba55 GKH |
317 | &bus_attr_rescan.attr, |
318 | NULL, | |
319 | }; | |
320 | ||
321 | static const struct attribute_group pci_bus_group = { | |
322 | .attrs = pci_bus_attrs, | |
323 | }; | |
324 | ||
325 | const struct attribute_group *pci_bus_groups[] = { | |
326 | &pci_bus_group, | |
327 | NULL, | |
705b1aaa | 328 | }; |
77c27c7b | 329 | |
3c78bc61 RD |
330 | static ssize_t dev_rescan_store(struct device *dev, |
331 | struct device_attribute *attr, const char *buf, | |
332 | size_t count) | |
738a6396 AC |
333 | { |
334 | unsigned long val; | |
335 | struct pci_dev *pdev = to_pci_dev(dev); | |
336 | ||
9a994e8e | 337 | if (kstrtoul(buf, 0, &val) < 0) |
738a6396 AC |
338 | return -EINVAL; |
339 | ||
340 | if (val) { | |
9d16947b | 341 | pci_lock_rescan_remove(); |
738a6396 | 342 | pci_rescan_bus(pdev->bus); |
9d16947b | 343 | pci_unlock_rescan_remove(); |
738a6396 AC |
344 | } |
345 | return count; | |
346 | } | |
bf22c90f SK |
347 | static struct device_attribute dev_rescan_attr = __ATTR(rescan, |
348 | (S_IWUSR|S_IWGRP), | |
349 | NULL, dev_rescan_store); | |
738a6396 | 350 | |
3c78bc61 RD |
351 | static ssize_t remove_store(struct device *dev, struct device_attribute *attr, |
352 | const char *buf, size_t count) | |
77c27c7b | 353 | { |
77c27c7b | 354 | unsigned long val; |
77c27c7b | 355 | |
9a994e8e | 356 | if (kstrtoul(buf, 0, &val) < 0) |
77c27c7b AC |
357 | return -EINVAL; |
358 | ||
bc6caf02 TH |
359 | if (val && device_remove_file_self(dev, attr)) |
360 | pci_stop_and_remove_bus_device_locked(to_pci_dev(dev)); | |
77c27c7b AC |
361 | return count; |
362 | } | |
bf22c90f SK |
363 | static struct device_attribute dev_remove_attr = __ATTR(remove, |
364 | (S_IWUSR|S_IWGRP), | |
365 | NULL, remove_store); | |
b9d320fc | 366 | |
3c78bc61 RD |
367 | static ssize_t dev_bus_rescan_store(struct device *dev, |
368 | struct device_attribute *attr, | |
369 | const char *buf, size_t count) | |
b9d320fc YL |
370 | { |
371 | unsigned long val; | |
372 | struct pci_bus *bus = to_pci_bus(dev); | |
373 | ||
9a994e8e | 374 | if (kstrtoul(buf, 0, &val) < 0) |
b9d320fc YL |
375 | return -EINVAL; |
376 | ||
377 | if (val) { | |
9d16947b | 378 | pci_lock_rescan_remove(); |
2f320521 YL |
379 | if (!pci_is_root_bus(bus) && list_empty(&bus->devices)) |
380 | pci_rescan_bus_bridge_resize(bus->self); | |
381 | else | |
382 | pci_rescan_bus(bus); | |
9d16947b | 383 | pci_unlock_rescan_remove(); |
b9d320fc YL |
384 | } |
385 | return count; | |
386 | } | |
56039e65 | 387 | static DEVICE_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store); |
b9d320fc | 388 | |
448bd857 HY |
389 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
390 | static ssize_t d3cold_allowed_store(struct device *dev, | |
391 | struct device_attribute *attr, | |
392 | const char *buf, size_t count) | |
393 | { | |
394 | struct pci_dev *pdev = to_pci_dev(dev); | |
395 | unsigned long val; | |
396 | ||
9a994e8e | 397 | if (kstrtoul(buf, 0, &val) < 0) |
448bd857 HY |
398 | return -EINVAL; |
399 | ||
400 | pdev->d3cold_allowed = !!val; | |
401 | pm_runtime_resume(dev); | |
402 | ||
403 | return count; | |
404 | } | |
405 | ||
406 | static ssize_t d3cold_allowed_show(struct device *dev, | |
407 | struct device_attribute *attr, char *buf) | |
408 | { | |
409 | struct pci_dev *pdev = to_pci_dev(dev); | |
3c78bc61 | 410 | return sprintf(buf, "%u\n", pdev->d3cold_allowed); |
448bd857 | 411 | } |
5136b2da | 412 | static DEVICE_ATTR_RW(d3cold_allowed); |
448bd857 HY |
413 | #endif |
414 | ||
dfc73e7a SO |
415 | #ifdef CONFIG_OF |
416 | static ssize_t devspec_show(struct device *dev, | |
417 | struct device_attribute *attr, char *buf) | |
418 | { | |
419 | struct pci_dev *pdev = to_pci_dev(dev); | |
420 | struct device_node *np = pci_device_to_OF_node(pdev); | |
421 | ||
422 | if (np == NULL || np->full_name == NULL) | |
423 | return 0; | |
424 | return sprintf(buf, "%s", np->full_name); | |
425 | } | |
426 | static DEVICE_ATTR_RO(devspec); | |
427 | #endif | |
428 | ||
1789382a DD |
429 | #ifdef CONFIG_PCI_IOV |
430 | static ssize_t sriov_totalvfs_show(struct device *dev, | |
431 | struct device_attribute *attr, | |
432 | char *buf) | |
433 | { | |
434 | struct pci_dev *pdev = to_pci_dev(dev); | |
435 | ||
bff73156 | 436 | return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); |
1789382a DD |
437 | } |
438 | ||
439 | ||
440 | static ssize_t sriov_numvfs_show(struct device *dev, | |
441 | struct device_attribute *attr, | |
442 | char *buf) | |
443 | { | |
444 | struct pci_dev *pdev = to_pci_dev(dev); | |
445 | ||
6b136724 | 446 | return sprintf(buf, "%u\n", pdev->sriov->num_VFs); |
1789382a DD |
447 | } |
448 | ||
449 | /* | |
faa48a50 BH |
450 | * num_vfs > 0; number of VFs to enable |
451 | * num_vfs = 0; disable all VFs | |
1789382a DD |
452 | * |
453 | * Note: SRIOV spec doesn't allow partial VF | |
faa48a50 | 454 | * disable, so it's all or none. |
1789382a DD |
455 | */ |
456 | static ssize_t sriov_numvfs_store(struct device *dev, | |
457 | struct device_attribute *attr, | |
458 | const char *buf, size_t count) | |
459 | { | |
460 | struct pci_dev *pdev = to_pci_dev(dev); | |
faa48a50 BH |
461 | int ret; |
462 | u16 num_vfs; | |
1789382a | 463 | |
faa48a50 BH |
464 | ret = kstrtou16(buf, 0, &num_vfs); |
465 | if (ret < 0) | |
466 | return ret; | |
467 | ||
468 | if (num_vfs > pci_sriov_get_totalvfs(pdev)) | |
469 | return -ERANGE; | |
470 | ||
471 | if (num_vfs == pdev->sriov->num_VFs) | |
472 | return count; /* no change */ | |
1789382a DD |
473 | |
474 | /* is PF driver loaded w/callback */ | |
475 | if (!pdev->driver || !pdev->driver->sriov_configure) { | |
faa48a50 | 476 | dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n"); |
1789382a DD |
477 | return -ENOSYS; |
478 | } | |
479 | ||
faa48a50 BH |
480 | if (num_vfs == 0) { |
481 | /* disable VFs */ | |
482 | ret = pdev->driver->sriov_configure(pdev, 0); | |
483 | if (ret < 0) | |
484 | return ret; | |
485 | return count; | |
1789382a DD |
486 | } |
487 | ||
faa48a50 BH |
488 | /* enable VFs */ |
489 | if (pdev->sriov->num_VFs) { | |
490 | dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n", | |
491 | pdev->sriov->num_VFs, num_vfs); | |
492 | return -EBUSY; | |
1789382a DD |
493 | } |
494 | ||
faa48a50 BH |
495 | ret = pdev->driver->sriov_configure(pdev, num_vfs); |
496 | if (ret < 0) | |
497 | return ret; | |
1789382a | 498 | |
faa48a50 BH |
499 | if (ret != num_vfs) |
500 | dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n", | |
501 | num_vfs, ret); | |
502 | ||
503 | return count; | |
1789382a DD |
504 | } |
505 | ||
506 | static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); | |
507 | static struct device_attribute sriov_numvfs_attr = | |
508 | __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), | |
509 | sriov_numvfs_show, sriov_numvfs_store); | |
510 | #endif /* CONFIG_PCI_IOV */ | |
511 | ||
782a985d AW |
512 | static ssize_t driver_override_store(struct device *dev, |
513 | struct device_attribute *attr, | |
514 | const char *buf, size_t count) | |
515 | { | |
516 | struct pci_dev *pdev = to_pci_dev(dev); | |
517 | char *driver_override, *old = pdev->driver_override, *cp; | |
518 | ||
519 | if (count > PATH_MAX) | |
520 | return -EINVAL; | |
521 | ||
522 | driver_override = kstrndup(buf, count, GFP_KERNEL); | |
523 | if (!driver_override) | |
524 | return -ENOMEM; | |
525 | ||
526 | cp = strchr(driver_override, '\n'); | |
527 | if (cp) | |
528 | *cp = '\0'; | |
529 | ||
530 | if (strlen(driver_override)) { | |
531 | pdev->driver_override = driver_override; | |
532 | } else { | |
533 | kfree(driver_override); | |
534 | pdev->driver_override = NULL; | |
535 | } | |
536 | ||
537 | kfree(old); | |
538 | ||
539 | return count; | |
540 | } | |
541 | ||
542 | static ssize_t driver_override_show(struct device *dev, | |
543 | struct device_attribute *attr, char *buf) | |
544 | { | |
545 | struct pci_dev *pdev = to_pci_dev(dev); | |
546 | ||
547 | return sprintf(buf, "%s\n", pdev->driver_override); | |
548 | } | |
549 | static DEVICE_ATTR_RW(driver_override); | |
550 | ||
bf22c90f | 551 | static struct attribute *pci_dev_attrs[] = { |
5136b2da GKH |
552 | &dev_attr_resource.attr, |
553 | &dev_attr_vendor.attr, | |
554 | &dev_attr_device.attr, | |
555 | &dev_attr_subsystem_vendor.attr, | |
556 | &dev_attr_subsystem_device.attr, | |
557 | &dev_attr_class.attr, | |
558 | &dev_attr_irq.attr, | |
559 | &dev_attr_local_cpus.attr, | |
560 | &dev_attr_local_cpulist.attr, | |
561 | &dev_attr_modalias.attr, | |
81bb0e19 | 562 | #ifdef CONFIG_NUMA |
5136b2da | 563 | &dev_attr_numa_node.attr, |
81bb0e19 | 564 | #endif |
5136b2da GKH |
565 | &dev_attr_dma_mask_bits.attr, |
566 | &dev_attr_consistent_dma_mask_bits.attr, | |
567 | &dev_attr_enabled.attr, | |
568 | &dev_attr_broken_parity_status.attr, | |
569 | &dev_attr_msi_bus.attr, | |
448bd857 | 570 | #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) |
5136b2da | 571 | &dev_attr_d3cold_allowed.attr, |
dfc73e7a SO |
572 | #endif |
573 | #ifdef CONFIG_OF | |
574 | &dev_attr_devspec.attr, | |
77c27c7b | 575 | #endif |
782a985d | 576 | &dev_attr_driver_override.attr, |
5136b2da GKH |
577 | NULL, |
578 | }; | |
579 | ||
580 | static const struct attribute_group pci_dev_group = { | |
581 | .attrs = pci_dev_attrs, | |
582 | }; | |
583 | ||
584 | const struct attribute_group *pci_dev_groups[] = { | |
585 | &pci_dev_group, | |
586 | NULL, | |
1da177e4 LT |
587 | }; |
588 | ||
56039e65 GKH |
589 | static struct attribute *pcibus_attrs[] = { |
590 | &dev_attr_rescan.attr, | |
591 | &dev_attr_cpuaffinity.attr, | |
592 | &dev_attr_cpulistaffinity.attr, | |
593 | NULL, | |
594 | }; | |
595 | ||
596 | static const struct attribute_group pcibus_group = { | |
597 | .attrs = pcibus_attrs, | |
598 | }; | |
599 | ||
600 | const struct attribute_group *pcibus_groups[] = { | |
601 | &pcibus_group, | |
602 | NULL, | |
b9d320fc YL |
603 | }; |
604 | ||
3c78bc61 RD |
605 | static ssize_t boot_vga_show(struct device *dev, struct device_attribute *attr, |
606 | char *buf) | |
217f45de DA |
607 | { |
608 | struct pci_dev *pdev = to_pci_dev(dev); | |
1a39b310 MG |
609 | struct pci_dev *vga_dev = vga_default_device(); |
610 | ||
611 | if (vga_dev) | |
612 | return sprintf(buf, "%u\n", (pdev == vga_dev)); | |
217f45de DA |
613 | |
614 | return sprintf(buf, "%u\n", | |
615 | !!(pdev->resource[PCI_ROM_RESOURCE].flags & | |
616 | IORESOURCE_ROM_SHADOW)); | |
617 | } | |
bf22c90f | 618 | static struct device_attribute vga_attr = __ATTR_RO(boot_vga); |
217f45de | 619 | |
3c78bc61 RD |
620 | static ssize_t pci_read_config(struct file *filp, struct kobject *kobj, |
621 | struct bin_attribute *bin_attr, char *buf, | |
622 | loff_t off, size_t count) | |
1da177e4 | 623 | { |
3c78bc61 RD |
624 | struct pci_dev *dev = to_pci_dev(container_of(kobj, struct device, |
625 | kobj)); | |
1da177e4 LT |
626 | unsigned int size = 64; |
627 | loff_t init_off = off; | |
3c78bc61 | 628 | u8 *data = (u8 *) buf; |
1da177e4 LT |
629 | |
630 | /* Several chips lock up trying to read undefined config space */ | |
3c78bc61 | 631 | if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0) |
1da177e4 | 632 | size = dev->cfg_size; |
3c78bc61 | 633 | else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) |
1da177e4 | 634 | size = 128; |
1da177e4 LT |
635 | |
636 | if (off > size) | |
637 | return 0; | |
638 | if (off + count > size) { | |
639 | size -= off; | |
640 | count = size; | |
641 | } else { | |
642 | size = count; | |
643 | } | |
644 | ||
3d8387ef HY |
645 | pci_config_pm_runtime_get(dev); |
646 | ||
4c0619ad | 647 | if ((off & 1) && size) { |
648 | u8 val; | |
e04b0ea2 | 649 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 650 | data[off - init_off] = val; |
1da177e4 | 651 | off++; |
4c0619ad | 652 | size--; |
653 | } | |
654 | ||
655 | if ((off & 3) && size > 2) { | |
656 | u16 val; | |
e04b0ea2 | 657 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 658 | data[off - init_off] = val & 0xff; |
659 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
660 | off += 2; | |
661 | size -= 2; | |
1da177e4 LT |
662 | } |
663 | ||
664 | while (size > 3) { | |
4c0619ad | 665 | u32 val; |
e04b0ea2 | 666 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad | 667 | data[off - init_off] = val & 0xff; |
668 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
669 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
670 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
671 | off += 4; |
672 | size -= 4; | |
673 | } | |
674 | ||
4c0619ad | 675 | if (size >= 2) { |
676 | u16 val; | |
e04b0ea2 | 677 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 678 | data[off - init_off] = val & 0xff; |
679 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
680 | off += 2; | |
681 | size -= 2; | |
682 | } | |
683 | ||
684 | if (size > 0) { | |
685 | u8 val; | |
e04b0ea2 | 686 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 687 | data[off - init_off] = val; |
1da177e4 LT |
688 | off++; |
689 | --size; | |
690 | } | |
691 | ||
3d8387ef HY |
692 | pci_config_pm_runtime_put(dev); |
693 | ||
1da177e4 LT |
694 | return count; |
695 | } | |
696 | ||
3c78bc61 RD |
697 | static ssize_t pci_write_config(struct file *filp, struct kobject *kobj, |
698 | struct bin_attribute *bin_attr, char *buf, | |
699 | loff_t off, size_t count) | |
1da177e4 | 700 | { |
3c78bc61 RD |
701 | struct pci_dev *dev = to_pci_dev(container_of(kobj, struct device, |
702 | kobj)); | |
1da177e4 LT |
703 | unsigned int size = count; |
704 | loff_t init_off = off; | |
3c78bc61 | 705 | u8 *data = (u8 *) buf; |
1da177e4 LT |
706 | |
707 | if (off > dev->cfg_size) | |
708 | return 0; | |
709 | if (off + count > dev->cfg_size) { | |
710 | size = dev->cfg_size - off; | |
711 | count = size; | |
712 | } | |
f7625980 | 713 | |
3d8387ef HY |
714 | pci_config_pm_runtime_get(dev); |
715 | ||
4c0619ad | 716 | if ((off & 1) && size) { |
e04b0ea2 | 717 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 718 | off++; |
4c0619ad | 719 | size--; |
1da177e4 | 720 | } |
f7625980 | 721 | |
4c0619ad | 722 | if ((off & 3) && size > 2) { |
723 | u16 val = data[off - init_off]; | |
724 | val |= (u16) data[off - init_off + 1] << 8; | |
3c78bc61 RD |
725 | pci_user_write_config_word(dev, off, val); |
726 | off += 2; | |
727 | size -= 2; | |
728 | } | |
1da177e4 LT |
729 | |
730 | while (size > 3) { | |
4c0619ad | 731 | u32 val = data[off - init_off]; |
732 | val |= (u32) data[off - init_off + 1] << 8; | |
733 | val |= (u32) data[off - init_off + 2] << 16; | |
734 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 735 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
736 | off += 4; |
737 | size -= 4; | |
738 | } | |
f7625980 | 739 | |
4c0619ad | 740 | if (size >= 2) { |
741 | u16 val = data[off - init_off]; | |
742 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 743 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 744 | off += 2; |
745 | size -= 2; | |
746 | } | |
1da177e4 | 747 | |
4c0619ad | 748 | if (size) { |
e04b0ea2 | 749 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
750 | off++; |
751 | --size; | |
752 | } | |
753 | ||
3d8387ef HY |
754 | pci_config_pm_runtime_put(dev); |
755 | ||
1da177e4 LT |
756 | return count; |
757 | } | |
758 | ||
3c78bc61 RD |
759 | static ssize_t read_vpd_attr(struct file *filp, struct kobject *kobj, |
760 | struct bin_attribute *bin_attr, char *buf, | |
761 | loff_t off, size_t count) | |
94e61088 BH |
762 | { |
763 | struct pci_dev *dev = | |
764 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
765 | |
766 | if (off > bin_attr->size) | |
767 | count = 0; | |
768 | else if (count > bin_attr->size - off) | |
769 | count = bin_attr->size - off; | |
94e61088 | 770 | |
287d19ce | 771 | return pci_read_vpd(dev, off, count, buf); |
94e61088 BH |
772 | } |
773 | ||
3c78bc61 RD |
774 | static ssize_t write_vpd_attr(struct file *filp, struct kobject *kobj, |
775 | struct bin_attribute *bin_attr, char *buf, | |
776 | loff_t off, size_t count) | |
94e61088 BH |
777 | { |
778 | struct pci_dev *dev = | |
779 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
780 | |
781 | if (off > bin_attr->size) | |
782 | count = 0; | |
783 | else if (count > bin_attr->size - off) | |
784 | count = bin_attr->size - off; | |
94e61088 | 785 | |
287d19ce | 786 | return pci_write_vpd(dev, off, count, buf); |
94e61088 BH |
787 | } |
788 | ||
1da177e4 LT |
789 | #ifdef HAVE_PCI_LEGACY |
790 | /** | |
791 | * pci_read_legacy_io - read byte(s) from legacy I/O port space | |
2c3c8bea | 792 | * @filp: open sysfs file |
1da177e4 | 793 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 794 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
795 | * @buf: buffer to store results |
796 | * @off: offset into legacy I/O port space | |
797 | * @count: number of bytes to read | |
798 | * | |
799 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
800 | * callback routine (pci_legacy_read). | |
801 | */ | |
3c78bc61 RD |
802 | static ssize_t pci_read_legacy_io(struct file *filp, struct kobject *kobj, |
803 | struct bin_attribute *bin_attr, char *buf, | |
804 | loff_t off, size_t count) | |
1da177e4 | 805 | { |
3c78bc61 | 806 | struct pci_bus *bus = to_pci_bus(container_of(kobj, struct device, |
1da177e4 LT |
807 | kobj)); |
808 | ||
3c78bc61 RD |
809 | /* Only support 1, 2 or 4 byte accesses */ |
810 | if (count != 1 && count != 2 && count != 4) | |
811 | return -EINVAL; | |
1da177e4 | 812 | |
3c78bc61 | 813 | return pci_legacy_read(bus, off, (u32 *)buf, count); |
1da177e4 LT |
814 | } |
815 | ||
816 | /** | |
817 | * pci_write_legacy_io - write byte(s) to legacy I/O port space | |
2c3c8bea | 818 | * @filp: open sysfs file |
1da177e4 | 819 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 820 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
821 | * @buf: buffer containing value to be written |
822 | * @off: offset into legacy I/O port space | |
823 | * @count: number of bytes to write | |
824 | * | |
825 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
826 | * callback routine (pci_legacy_write). | |
827 | */ | |
3c78bc61 RD |
828 | static ssize_t pci_write_legacy_io(struct file *filp, struct kobject *kobj, |
829 | struct bin_attribute *bin_attr, char *buf, | |
830 | loff_t off, size_t count) | |
1da177e4 | 831 | { |
3c78bc61 | 832 | struct pci_bus *bus = to_pci_bus(container_of(kobj, struct device, |
1da177e4 | 833 | kobj)); |
1da177e4 | 834 | |
3c78bc61 RD |
835 | /* Only support 1, 2 or 4 byte accesses */ |
836 | if (count != 1 && count != 2 && count != 4) | |
837 | return -EINVAL; | |
838 | ||
839 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
1da177e4 LT |
840 | } |
841 | ||
842 | /** | |
843 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
2c3c8bea | 844 | * @filp: open sysfs file |
1da177e4 LT |
845 | * @kobj: kobject corresponding to device to be mapped |
846 | * @attr: struct bin_attribute for this file | |
847 | * @vma: struct vm_area_struct passed to mmap | |
848 | * | |
f19aeb1f | 849 | * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap |
1da177e4 LT |
850 | * legacy memory space (first meg of bus space) into application virtual |
851 | * memory space. | |
852 | */ | |
3c78bc61 RD |
853 | static int pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, |
854 | struct bin_attribute *attr, | |
855 | struct vm_area_struct *vma) | |
1da177e4 | 856 | { |
3c78bc61 | 857 | struct pci_bus *bus = to_pci_bus(container_of(kobj, struct device, |
1da177e4 LT |
858 | kobj)); |
859 | ||
3c78bc61 | 860 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); |
f19aeb1f BH |
861 | } |
862 | ||
863 | /** | |
864 | * pci_mmap_legacy_io - map legacy PCI IO into user memory space | |
2c3c8bea | 865 | * @filp: open sysfs file |
f19aeb1f BH |
866 | * @kobj: kobject corresponding to device to be mapped |
867 | * @attr: struct bin_attribute for this file | |
868 | * @vma: struct vm_area_struct passed to mmap | |
869 | * | |
870 | * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap | |
871 | * legacy IO space (first meg of bus space) into application virtual | |
872 | * memory space. Returns -ENOSYS if the operation isn't supported | |
873 | */ | |
3c78bc61 RD |
874 | static int pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, |
875 | struct bin_attribute *attr, | |
876 | struct vm_area_struct *vma) | |
f19aeb1f | 877 | { |
3c78bc61 | 878 | struct pci_bus *bus = to_pci_bus(container_of(kobj, struct device, |
f19aeb1f BH |
879 | kobj)); |
880 | ||
3c78bc61 | 881 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); |
f19aeb1f BH |
882 | } |
883 | ||
10a0ef39 IK |
884 | /** |
885 | * pci_adjust_legacy_attr - adjustment of legacy file attributes | |
886 | * @b: bus to create files under | |
887 | * @mmap_type: I/O port or memory | |
888 | * | |
889 | * Stub implementation. Can be overridden by arch if necessary. | |
890 | */ | |
3c78bc61 RD |
891 | void __weak pci_adjust_legacy_attr(struct pci_bus *b, |
892 | enum pci_mmap_state mmap_type) | |
10a0ef39 | 893 | { |
10a0ef39 IK |
894 | } |
895 | ||
f19aeb1f BH |
896 | /** |
897 | * pci_create_legacy_files - create legacy I/O port and memory files | |
898 | * @b: bus to create files under | |
899 | * | |
900 | * Some platforms allow access to legacy I/O port and ISA memory space on | |
901 | * a per-bus basis. This routine creates the files and ties them into | |
902 | * their associated read, write and mmap files from pci-sysfs.c | |
903 | * | |
25985edc | 904 | * On error unwind, but don't propagate the error to the caller |
f19aeb1f BH |
905 | * as it is ok to set up the PCI bus without these files. |
906 | */ | |
907 | void pci_create_legacy_files(struct pci_bus *b) | |
908 | { | |
909 | int error; | |
910 | ||
911 | b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, | |
912 | GFP_ATOMIC); | |
913 | if (!b->legacy_io) | |
914 | goto kzalloc_err; | |
915 | ||
62e877b8 | 916 | sysfs_bin_attr_init(b->legacy_io); |
f19aeb1f BH |
917 | b->legacy_io->attr.name = "legacy_io"; |
918 | b->legacy_io->size = 0xffff; | |
919 | b->legacy_io->attr.mode = S_IRUSR | S_IWUSR; | |
920 | b->legacy_io->read = pci_read_legacy_io; | |
921 | b->legacy_io->write = pci_write_legacy_io; | |
922 | b->legacy_io->mmap = pci_mmap_legacy_io; | |
10a0ef39 | 923 | pci_adjust_legacy_attr(b, pci_mmap_io); |
f19aeb1f BH |
924 | error = device_create_bin_file(&b->dev, b->legacy_io); |
925 | if (error) | |
926 | goto legacy_io_err; | |
927 | ||
928 | /* Allocated above after the legacy_io struct */ | |
929 | b->legacy_mem = b->legacy_io + 1; | |
6757eca3 | 930 | sysfs_bin_attr_init(b->legacy_mem); |
f19aeb1f BH |
931 | b->legacy_mem->attr.name = "legacy_mem"; |
932 | b->legacy_mem->size = 1024*1024; | |
933 | b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR; | |
934 | b->legacy_mem->mmap = pci_mmap_legacy_mem; | |
10a0ef39 | 935 | pci_adjust_legacy_attr(b, pci_mmap_mem); |
f19aeb1f BH |
936 | error = device_create_bin_file(&b->dev, b->legacy_mem); |
937 | if (error) | |
938 | goto legacy_mem_err; | |
939 | ||
940 | return; | |
941 | ||
942 | legacy_mem_err: | |
943 | device_remove_bin_file(&b->dev, b->legacy_io); | |
944 | legacy_io_err: | |
945 | kfree(b->legacy_io); | |
946 | b->legacy_io = NULL; | |
947 | kzalloc_err: | |
227f0647 | 948 | printk(KERN_WARNING "pci: warning: could not create legacy I/O port and ISA memory resources to sysfs\n"); |
f19aeb1f BH |
949 | return; |
950 | } | |
951 | ||
952 | void pci_remove_legacy_files(struct pci_bus *b) | |
953 | { | |
954 | if (b->legacy_io) { | |
955 | device_remove_bin_file(&b->dev, b->legacy_io); | |
956 | device_remove_bin_file(&b->dev, b->legacy_mem); | |
957 | kfree(b->legacy_io); /* both are allocated here */ | |
958 | } | |
1da177e4 LT |
959 | } |
960 | #endif /* HAVE_PCI_LEGACY */ | |
961 | ||
962 | #ifdef HAVE_PCI_MMAP | |
b5ff7df3 | 963 | |
3b519e4e MW |
964 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, |
965 | enum pci_mmap_api mmap_api) | |
b5ff7df3 | 966 | { |
3b519e4e | 967 | unsigned long nr, start, size, pci_start; |
b5ff7df3 | 968 | |
3b519e4e MW |
969 | if (pci_resource_len(pdev, resno) == 0) |
970 | return 0; | |
64b00175 | 971 | nr = vma_pages(vma); |
b5ff7df3 | 972 | start = vma->vm_pgoff; |
88e7df0b | 973 | size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; |
8c05cd08 | 974 | pci_start = (mmap_api == PCI_MMAP_PROCFS) ? |
3b519e4e MW |
975 | pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; |
976 | if (start >= pci_start && start < pci_start + size && | |
977 | start + nr <= pci_start + size) | |
b5ff7df3 | 978 | return 1; |
b5ff7df3 LT |
979 | return 0; |
980 | } | |
981 | ||
1da177e4 LT |
982 | /** |
983 | * pci_mmap_resource - map a PCI resource into user memory space | |
984 | * @kobj: kobject for mapping | |
985 | * @attr: struct bin_attribute for the file being mapped | |
986 | * @vma: struct vm_area_struct passed into the mmap | |
45aec1ae | 987 | * @write_combine: 1 for write_combine mapping |
1da177e4 LT |
988 | * |
989 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
1da177e4 | 990 | */ |
3c78bc61 RD |
991 | static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, |
992 | struct vm_area_struct *vma, int write_combine) | |
1da177e4 LT |
993 | { |
994 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
995 | struct device, kobj)); | |
a3f5835a | 996 | struct resource *res = attr->private; |
1da177e4 | 997 | enum pci_mmap_state mmap_type; |
e31dd6e4 | 998 | resource_size_t start, end; |
2311b1f2 | 999 | int i; |
1da177e4 | 1000 | |
2311b1f2 ME |
1001 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
1002 | if (res == &pdev->resource[i]) | |
1003 | break; | |
1004 | if (i >= PCI_ROM_RESOURCE) | |
1005 | return -ENODEV; | |
1006 | ||
3b519e4e | 1007 | if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { |
227f0647 | 1008 | WARN(1, "process \"%s\" tried to map 0x%08lx bytes at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n", |
3b519e4e MW |
1009 | current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, |
1010 | pci_name(pdev), i, | |
e25cd062 RD |
1011 | (u64)pci_resource_start(pdev, i), |
1012 | (u64)pci_resource_len(pdev, i)); | |
b5ff7df3 | 1013 | return -EINVAL; |
3b519e4e | 1014 | } |
b5ff7df3 | 1015 | |
2311b1f2 ME |
1016 | /* pci_mmap_page_range() expects the same kind of entry as coming |
1017 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
1018 | * different from the resource itself, arch will do necessary fixup. | |
1019 | */ | |
1020 | pci_resource_to_user(pdev, i, res, &start, &end); | |
1021 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 LT |
1022 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
1023 | ||
e8de1481 AV |
1024 | if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start)) |
1025 | return -EINVAL; | |
1026 | ||
45aec1ae | 1027 | return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); |
1028 | } | |
1029 | ||
3c78bc61 RD |
1030 | static int pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, |
1031 | struct bin_attribute *attr, | |
1032 | struct vm_area_struct *vma) | |
45aec1ae | 1033 | { |
1034 | return pci_mmap_resource(kobj, attr, vma, 0); | |
1035 | } | |
1036 | ||
3c78bc61 RD |
1037 | static int pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, |
1038 | struct bin_attribute *attr, | |
1039 | struct vm_area_struct *vma) | |
45aec1ae | 1040 | { |
1041 | return pci_mmap_resource(kobj, attr, vma, 1); | |
1da177e4 LT |
1042 | } |
1043 | ||
3c78bc61 RD |
1044 | static ssize_t pci_resource_io(struct file *filp, struct kobject *kobj, |
1045 | struct bin_attribute *attr, char *buf, | |
1046 | loff_t off, size_t count, bool write) | |
8633328b AW |
1047 | { |
1048 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
1049 | struct device, kobj)); | |
1050 | struct resource *res = attr->private; | |
1051 | unsigned long port = off; | |
1052 | int i; | |
1053 | ||
1054 | for (i = 0; i < PCI_ROM_RESOURCE; i++) | |
1055 | if (res == &pdev->resource[i]) | |
1056 | break; | |
1057 | if (i >= PCI_ROM_RESOURCE) | |
1058 | return -ENODEV; | |
1059 | ||
1060 | port += pci_resource_start(pdev, i); | |
1061 | ||
1062 | if (port > pci_resource_end(pdev, i)) | |
1063 | return 0; | |
1064 | ||
1065 | if (port + count - 1 > pci_resource_end(pdev, i)) | |
1066 | return -EINVAL; | |
1067 | ||
1068 | switch (count) { | |
1069 | case 1: | |
1070 | if (write) | |
1071 | outb(*(u8 *)buf, port); | |
1072 | else | |
1073 | *(u8 *)buf = inb(port); | |
1074 | return 1; | |
1075 | case 2: | |
1076 | if (write) | |
1077 | outw(*(u16 *)buf, port); | |
1078 | else | |
1079 | *(u16 *)buf = inw(port); | |
1080 | return 2; | |
1081 | case 4: | |
1082 | if (write) | |
1083 | outl(*(u32 *)buf, port); | |
1084 | else | |
1085 | *(u32 *)buf = inl(port); | |
1086 | return 4; | |
1087 | } | |
1088 | return -EINVAL; | |
1089 | } | |
1090 | ||
3c78bc61 RD |
1091 | static ssize_t pci_read_resource_io(struct file *filp, struct kobject *kobj, |
1092 | struct bin_attribute *attr, char *buf, | |
1093 | loff_t off, size_t count) | |
8633328b AW |
1094 | { |
1095 | return pci_resource_io(filp, kobj, attr, buf, off, count, false); | |
1096 | } | |
1097 | ||
3c78bc61 RD |
1098 | static ssize_t pci_write_resource_io(struct file *filp, struct kobject *kobj, |
1099 | struct bin_attribute *attr, char *buf, | |
1100 | loff_t off, size_t count) | |
8633328b AW |
1101 | { |
1102 | return pci_resource_io(filp, kobj, attr, buf, off, count, true); | |
1103 | } | |
1104 | ||
b19441af GKH |
1105 | /** |
1106 | * pci_remove_resource_files - cleanup resource files | |
cffb2faf | 1107 | * @pdev: dev to cleanup |
b19441af | 1108 | * |
cffb2faf | 1109 | * If we created resource files for @pdev, remove them from sysfs and |
b19441af GKH |
1110 | * free their resources. |
1111 | */ | |
3c78bc61 | 1112 | static void pci_remove_resource_files(struct pci_dev *pdev) |
b19441af GKH |
1113 | { |
1114 | int i; | |
1115 | ||
1116 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1117 | struct bin_attribute *res_attr; | |
1118 | ||
1119 | res_attr = pdev->res_attr[i]; | |
1120 | if (res_attr) { | |
1121 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1122 | kfree(res_attr); | |
1123 | } | |
45aec1ae | 1124 | |
1125 | res_attr = pdev->res_attr_wc[i]; | |
1126 | if (res_attr) { | |
1127 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1128 | kfree(res_attr); | |
1129 | } | |
b19441af GKH |
1130 | } |
1131 | } | |
1132 | ||
45aec1ae | 1133 | static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) |
1134 | { | |
1135 | /* allocate attribute structure, piggyback attribute name */ | |
1136 | int name_len = write_combine ? 13 : 10; | |
1137 | struct bin_attribute *res_attr; | |
1138 | int retval; | |
1139 | ||
1140 | res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); | |
1141 | if (res_attr) { | |
1142 | char *res_attr_name = (char *)(res_attr + 1); | |
1143 | ||
a07e4156 | 1144 | sysfs_bin_attr_init(res_attr); |
45aec1ae | 1145 | if (write_combine) { |
1146 | pdev->res_attr_wc[num] = res_attr; | |
1147 | sprintf(res_attr_name, "resource%d_wc", num); | |
1148 | res_attr->mmap = pci_mmap_resource_wc; | |
1149 | } else { | |
1150 | pdev->res_attr[num] = res_attr; | |
1151 | sprintf(res_attr_name, "resource%d", num); | |
1152 | res_attr->mmap = pci_mmap_resource_uc; | |
1153 | } | |
8633328b AW |
1154 | if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { |
1155 | res_attr->read = pci_read_resource_io; | |
1156 | res_attr->write = pci_write_resource_io; | |
1157 | } | |
45aec1ae | 1158 | res_attr->attr.name = res_attr_name; |
1159 | res_attr->attr.mode = S_IRUSR | S_IWUSR; | |
1160 | res_attr->size = pci_resource_len(pdev, num); | |
1161 | res_attr->private = &pdev->resource[num]; | |
1162 | retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
1163 | } else | |
1164 | retval = -ENOMEM; | |
1165 | ||
1166 | return retval; | |
1167 | } | |
1168 | ||
1da177e4 LT |
1169 | /** |
1170 | * pci_create_resource_files - create resource files in sysfs for @dev | |
cffb2faf | 1171 | * @pdev: dev in question |
1da177e4 | 1172 | * |
cffb2faf | 1173 | * Walk the resources in @pdev creating files for each resource available. |
1da177e4 | 1174 | */ |
b19441af | 1175 | static int pci_create_resource_files(struct pci_dev *pdev) |
1da177e4 LT |
1176 | { |
1177 | int i; | |
b19441af | 1178 | int retval; |
1da177e4 LT |
1179 | |
1180 | /* Expose the PCI resources from this device as files */ | |
1181 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1da177e4 LT |
1182 | |
1183 | /* skip empty resources */ | |
1184 | if (!pci_resource_len(pdev, i)) | |
1185 | continue; | |
1186 | ||
45aec1ae | 1187 | retval = pci_create_attr(pdev, i, 0); |
1188 | /* for prefetchable resources, create a WC mappable file */ | |
1189 | if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) | |
1190 | retval = pci_create_attr(pdev, i, 1); | |
1191 | ||
1192 | if (retval) { | |
1193 | pci_remove_resource_files(pdev); | |
1194 | return retval; | |
1da177e4 LT |
1195 | } |
1196 | } | |
b19441af | 1197 | return 0; |
1da177e4 LT |
1198 | } |
1199 | #else /* !HAVE_PCI_MMAP */ | |
10a0ef39 IK |
1200 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } |
1201 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } | |
1da177e4 LT |
1202 | #endif /* HAVE_PCI_MMAP */ |
1203 | ||
1204 | /** | |
1205 | * pci_write_rom - used to enable access to the PCI ROM display | |
2c3c8bea | 1206 | * @filp: sysfs file |
1da177e4 | 1207 | * @kobj: kernel object handle |
cffb2faf | 1208 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1209 | * @buf: user input |
1210 | * @off: file offset | |
1211 | * @count: number of byte in input | |
1212 | * | |
1213 | * writing anything except 0 enables it | |
1214 | */ | |
3c78bc61 RD |
1215 | static ssize_t pci_write_rom(struct file *filp, struct kobject *kobj, |
1216 | struct bin_attribute *bin_attr, char *buf, | |
1217 | loff_t off, size_t count) | |
1da177e4 LT |
1218 | { |
1219 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1220 | ||
1221 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
1222 | pdev->rom_attr_enabled = 0; | |
1223 | else | |
1224 | pdev->rom_attr_enabled = 1; | |
1225 | ||
1226 | return count; | |
1227 | } | |
1228 | ||
1229 | /** | |
1230 | * pci_read_rom - read a PCI ROM | |
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: where to put the data we read from the ROM |
1235 | * @off: file offset | |
1236 | * @count: number of bytes to read | |
1237 | * | |
1238 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
1239 | * device corresponding to @kobj. | |
1240 | */ | |
3c78bc61 RD |
1241 | static ssize_t pci_read_rom(struct file *filp, struct kobject *kobj, |
1242 | struct bin_attribute *bin_attr, char *buf, | |
1243 | loff_t off, size_t count) | |
1da177e4 LT |
1244 | { |
1245 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1246 | void __iomem *rom; | |
1247 | size_t size; | |
1248 | ||
1249 | if (!pdev->rom_attr_enabled) | |
1250 | return -EINVAL; | |
f7625980 | 1251 | |
1da177e4 | 1252 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ |
97c44836 TN |
1253 | if (!rom || !size) |
1254 | return -EIO; | |
f7625980 | 1255 | |
1da177e4 LT |
1256 | if (off >= size) |
1257 | count = 0; | |
1258 | else { | |
1259 | if (off + count > size) | |
1260 | count = size - off; | |
f7625980 | 1261 | |
1da177e4 LT |
1262 | memcpy_fromio(buf, rom + off, count); |
1263 | } | |
1264 | pci_unmap_rom(pdev, rom); | |
f7625980 | 1265 | |
1da177e4 LT |
1266 | return count; |
1267 | } | |
1268 | ||
1269 | static struct bin_attribute pci_config_attr = { | |
1270 | .attr = { | |
1271 | .name = "config", | |
1272 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1273 | }, |
557848c3 | 1274 | .size = PCI_CFG_SPACE_SIZE, |
1da177e4 LT |
1275 | .read = pci_read_config, |
1276 | .write = pci_write_config, | |
1277 | }; | |
1278 | ||
1279 | static struct bin_attribute pcie_config_attr = { | |
1280 | .attr = { | |
1281 | .name = "config", | |
1282 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1283 | }, |
557848c3 | 1284 | .size = PCI_CFG_SPACE_EXP_SIZE, |
1da177e4 LT |
1285 | .read = pci_read_config, |
1286 | .write = pci_write_config, | |
1287 | }; | |
1288 | ||
3c78bc61 RD |
1289 | static ssize_t reset_store(struct device *dev, struct device_attribute *attr, |
1290 | const char *buf, size_t count) | |
711d5779 MT |
1291 | { |
1292 | struct pci_dev *pdev = to_pci_dev(dev); | |
1293 | unsigned long val; | |
9a994e8e | 1294 | ssize_t result = kstrtoul(buf, 0, &val); |
711d5779 MT |
1295 | |
1296 | if (result < 0) | |
1297 | return result; | |
1298 | ||
1299 | if (val != 1) | |
1300 | return -EINVAL; | |
447c5dd7 MS |
1301 | |
1302 | result = pci_reset_function(pdev); | |
1303 | if (result < 0) | |
1304 | return result; | |
1305 | ||
1306 | return count; | |
711d5779 MT |
1307 | } |
1308 | ||
1309 | static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store); | |
1310 | ||
280c73d3 ZY |
1311 | static int pci_create_capabilities_sysfs(struct pci_dev *dev) |
1312 | { | |
1313 | int retval; | |
1314 | struct bin_attribute *attr; | |
1315 | ||
1316 | /* If the device has VPD, try to expose it in sysfs. */ | |
1317 | if (dev->vpd) { | |
1318 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); | |
1319 | if (!attr) | |
1320 | return -ENOMEM; | |
1321 | ||
a07e4156 | 1322 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1323 | attr->size = dev->vpd->len; |
1324 | attr->attr.name = "vpd"; | |
1325 | attr->attr.mode = S_IRUSR | S_IWUSR; | |
287d19ce SH |
1326 | attr->read = read_vpd_attr; |
1327 | attr->write = write_vpd_attr; | |
280c73d3 ZY |
1328 | retval = sysfs_create_bin_file(&dev->dev.kobj, attr); |
1329 | if (retval) { | |
0f12a4e2 | 1330 | kfree(attr); |
280c73d3 ZY |
1331 | return retval; |
1332 | } | |
1333 | dev->vpd->attr = attr; | |
1334 | } | |
1335 | ||
1336 | /* Active State Power Management */ | |
1337 | pcie_aspm_create_sysfs_dev_files(dev); | |
1338 | ||
711d5779 MT |
1339 | if (!pci_probe_reset_function(dev)) { |
1340 | retval = device_create_file(&dev->dev, &reset_attr); | |
1341 | if (retval) | |
1342 | goto error; | |
1343 | dev->reset_fn = 1; | |
1344 | } | |
280c73d3 | 1345 | return 0; |
711d5779 MT |
1346 | |
1347 | error: | |
1348 | pcie_aspm_remove_sysfs_dev_files(dev); | |
1349 | if (dev->vpd && dev->vpd->attr) { | |
1350 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1351 | kfree(dev->vpd->attr); | |
1352 | } | |
1353 | ||
1354 | return retval; | |
280c73d3 ZY |
1355 | } |
1356 | ||
3c78bc61 | 1357 | int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev) |
1da177e4 | 1358 | { |
b19441af | 1359 | int retval; |
280c73d3 ZY |
1360 | int rom_size = 0; |
1361 | struct bin_attribute *attr; | |
b19441af | 1362 | |
1da177e4 LT |
1363 | if (!sysfs_initialized) |
1364 | return -EACCES; | |
1365 | ||
557848c3 | 1366 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af | 1367 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1da177e4 | 1368 | else |
b19441af GKH |
1369 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
1370 | if (retval) | |
1371 | goto err; | |
1da177e4 | 1372 | |
b19441af GKH |
1373 | retval = pci_create_resource_files(pdev); |
1374 | if (retval) | |
280c73d3 ZY |
1375 | goto err_config_file; |
1376 | ||
1377 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) | |
1378 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1379 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1380 | rom_size = 0x20000; | |
1da177e4 LT |
1381 | |
1382 | /* If the device has a ROM, try to expose it in sysfs. */ | |
280c73d3 | 1383 | if (rom_size) { |
94e61088 | 1384 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); |
280c73d3 | 1385 | if (!attr) { |
b19441af | 1386 | retval = -ENOMEM; |
9890b12a | 1387 | goto err_resource_files; |
1da177e4 | 1388 | } |
a07e4156 | 1389 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1390 | attr->size = rom_size; |
1391 | attr->attr.name = "rom"; | |
ff29530e | 1392 | attr->attr.mode = S_IRUSR | S_IWUSR; |
280c73d3 ZY |
1393 | attr->read = pci_read_rom; |
1394 | attr->write = pci_write_rom; | |
1395 | retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); | |
1396 | if (retval) { | |
1397 | kfree(attr); | |
1398 | goto err_resource_files; | |
1399 | } | |
1400 | pdev->rom_attr = attr; | |
1da177e4 | 1401 | } |
280c73d3 | 1402 | |
280c73d3 ZY |
1403 | /* add sysfs entries for various capabilities */ |
1404 | retval = pci_create_capabilities_sysfs(pdev); | |
1405 | if (retval) | |
625e1d59 | 1406 | goto err_rom_file; |
7d715a6c | 1407 | |
911e1c9b N |
1408 | pci_create_firmware_label_files(pdev); |
1409 | ||
1da177e4 | 1410 | return 0; |
b19441af | 1411 | |
a2cd52ca | 1412 | err_rom_file: |
280c73d3 | 1413 | if (rom_size) { |
94e61088 | 1414 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
280c73d3 ZY |
1415 | kfree(pdev->rom_attr); |
1416 | pdev->rom_attr = NULL; | |
1417 | } | |
9890b12a ME |
1418 | err_resource_files: |
1419 | pci_remove_resource_files(pdev); | |
94e61088 | 1420 | err_config_file: |
557848c3 | 1421 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af GKH |
1422 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1423 | else | |
1424 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1425 | err: | |
1426 | return retval; | |
1da177e4 LT |
1427 | } |
1428 | ||
280c73d3 ZY |
1429 | static void pci_remove_capabilities_sysfs(struct pci_dev *dev) |
1430 | { | |
1431 | if (dev->vpd && dev->vpd->attr) { | |
1432 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1433 | kfree(dev->vpd->attr); | |
1434 | } | |
1435 | ||
1436 | pcie_aspm_remove_sysfs_dev_files(dev); | |
711d5779 MT |
1437 | if (dev->reset_fn) { |
1438 | device_remove_file(&dev->dev, &reset_attr); | |
1439 | dev->reset_fn = 0; | |
1440 | } | |
280c73d3 ZY |
1441 | } |
1442 | ||
1da177e4 LT |
1443 | /** |
1444 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
1445 | * @pdev: device whose entries we should free | |
1446 | * | |
1447 | * Cleanup when @pdev is removed from sysfs. | |
1448 | */ | |
1449 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
1450 | { | |
280c73d3 ZY |
1451 | int rom_size = 0; |
1452 | ||
d67afe5e DM |
1453 | if (!sysfs_initialized) |
1454 | return; | |
1455 | ||
280c73d3 | 1456 | pci_remove_capabilities_sysfs(pdev); |
7d715a6c | 1457 | |
557848c3 | 1458 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
1da177e4 LT |
1459 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1460 | else | |
1461 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1462 | ||
1463 | pci_remove_resource_files(pdev); | |
1464 | ||
280c73d3 ZY |
1465 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) |
1466 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1467 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1468 | rom_size = 0x20000; | |
1469 | ||
1470 | if (rom_size && pdev->rom_attr) { | |
1471 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); | |
1472 | kfree(pdev->rom_attr); | |
1da177e4 | 1473 | } |
911e1c9b N |
1474 | |
1475 | pci_remove_firmware_label_files(pdev); | |
1476 | ||
1da177e4 LT |
1477 | } |
1478 | ||
1479 | static int __init pci_sysfs_init(void) | |
1480 | { | |
1481 | struct pci_dev *pdev = NULL; | |
b19441af GKH |
1482 | int retval; |
1483 | ||
1da177e4 | 1484 | sysfs_initialized = 1; |
b19441af GKH |
1485 | for_each_pci_dev(pdev) { |
1486 | retval = pci_create_sysfs_dev_files(pdev); | |
151fc5df JL |
1487 | if (retval) { |
1488 | pci_dev_put(pdev); | |
b19441af | 1489 | return retval; |
151fc5df | 1490 | } |
b19441af | 1491 | } |
1da177e4 LT |
1492 | |
1493 | return 0; | |
1494 | } | |
40ee9e9f | 1495 | late_initcall(pci_sysfs_init); |
4e15c46b YL |
1496 | |
1497 | static struct attribute *pci_dev_dev_attrs[] = { | |
625e1d59 | 1498 | &vga_attr.attr, |
4e15c46b YL |
1499 | NULL, |
1500 | }; | |
1501 | ||
1502 | static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1503 | struct attribute *a, int n) |
4e15c46b | 1504 | { |
625e1d59 YL |
1505 | struct device *dev = container_of(kobj, struct device, kobj); |
1506 | struct pci_dev *pdev = to_pci_dev(dev); | |
1507 | ||
1508 | if (a == &vga_attr.attr) | |
1509 | if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1510 | return 0; | |
1511 | ||
4e15c46b YL |
1512 | return a->mode; |
1513 | } | |
1514 | ||
dfab88be JL |
1515 | static struct attribute *pci_dev_hp_attrs[] = { |
1516 | &dev_remove_attr.attr, | |
1517 | &dev_rescan_attr.attr, | |
1518 | NULL, | |
1519 | }; | |
1520 | ||
1521 | static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1522 | struct attribute *a, int n) |
dfab88be JL |
1523 | { |
1524 | struct device *dev = container_of(kobj, struct device, kobj); | |
1525 | struct pci_dev *pdev = to_pci_dev(dev); | |
1526 | ||
1527 | if (pdev->is_virtfn) | |
1528 | return 0; | |
1529 | ||
1530 | return a->mode; | |
1531 | } | |
1532 | ||
1533 | static struct attribute_group pci_dev_hp_attr_group = { | |
1534 | .attrs = pci_dev_hp_attrs, | |
1535 | .is_visible = pci_dev_hp_attrs_are_visible, | |
1536 | }; | |
1537 | ||
1789382a DD |
1538 | #ifdef CONFIG_PCI_IOV |
1539 | static struct attribute *sriov_dev_attrs[] = { | |
1540 | &sriov_totalvfs_attr.attr, | |
1541 | &sriov_numvfs_attr.attr, | |
1542 | NULL, | |
1543 | }; | |
1544 | ||
1545 | static umode_t sriov_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1546 | struct attribute *a, int n) |
1789382a DD |
1547 | { |
1548 | struct device *dev = container_of(kobj, struct device, kobj); | |
1549 | ||
1550 | if (!dev_is_pf(dev)) | |
1551 | return 0; | |
1552 | ||
1553 | return a->mode; | |
1554 | } | |
1555 | ||
1556 | static struct attribute_group sriov_dev_attr_group = { | |
1557 | .attrs = sriov_dev_attrs, | |
1558 | .is_visible = sriov_attrs_are_visible, | |
1559 | }; | |
1560 | #endif /* CONFIG_PCI_IOV */ | |
1561 | ||
4e15c46b YL |
1562 | static struct attribute_group pci_dev_attr_group = { |
1563 | .attrs = pci_dev_dev_attrs, | |
1564 | .is_visible = pci_dev_attrs_are_visible, | |
1565 | }; | |
1566 | ||
1567 | static const struct attribute_group *pci_dev_attr_groups[] = { | |
1568 | &pci_dev_attr_group, | |
dfab88be | 1569 | &pci_dev_hp_attr_group, |
1789382a DD |
1570 | #ifdef CONFIG_PCI_IOV |
1571 | &sriov_dev_attr_group, | |
1572 | #endif | |
4e15c46b YL |
1573 | NULL, |
1574 | }; | |
1575 | ||
1576 | struct device_type pci_dev_type = { | |
1577 | .groups = pci_dev_attr_groups, | |
1578 | }; |