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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"); | |
702ed3be | 53 | pci_config_attr(revision, "0x%02x\n"); |
1da177e4 LT |
54 | pci_config_attr(class, "0x%06x\n"); |
55 | pci_config_attr(irq, "%u\n"); | |
56 | ||
bdee9d98 DT |
57 | static ssize_t broken_parity_status_show(struct device *dev, |
58 | struct device_attribute *attr, | |
59 | char *buf) | |
60 | { | |
61 | struct pci_dev *pdev = to_pci_dev(dev); | |
3c78bc61 | 62 | return sprintf(buf, "%u\n", pdev->broken_parity_status); |
bdee9d98 DT |
63 | } |
64 | ||
65 | static ssize_t broken_parity_status_store(struct device *dev, | |
66 | struct device_attribute *attr, | |
67 | const char *buf, size_t count) | |
68 | { | |
69 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 70 | unsigned long val; |
bdee9d98 | 71 | |
9a994e8e | 72 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 TP |
73 | return -EINVAL; |
74 | ||
75 | pdev->broken_parity_status = !!val; | |
76 | ||
77 | return count; | |
bdee9d98 | 78 | } |
5136b2da | 79 | static DEVICE_ATTR_RW(broken_parity_status); |
bdee9d98 | 80 | |
5aaba363 | 81 | static ssize_t pci_dev_show_local_cpu(struct device *dev, bool list, |
3c78bc61 | 82 | struct device_attribute *attr, char *buf) |
c489f5fb | 83 | { |
3be83050 | 84 | const struct cpumask *mask; |
4327edf6 | 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 |
5aaba363 | 92 | return cpumap_print_to_pagebuf(list, buf, mask); |
39106dcf MT |
93 | } |
94 | ||
c489f5fb | 95 | static ssize_t local_cpus_show(struct device *dev, |
3c78bc61 | 96 | struct device_attribute *attr, char *buf) |
c489f5fb | 97 | { |
5aaba363 | 98 | return pci_dev_show_local_cpu(dev, false, attr, buf); |
c489f5fb | 99 | } |
5136b2da | 100 | static DEVICE_ATTR_RO(local_cpus); |
39106dcf MT |
101 | |
102 | static ssize_t local_cpulist_show(struct device *dev, | |
3c78bc61 | 103 | struct device_attribute *attr, char *buf) |
39106dcf | 104 | { |
5aaba363 | 105 | return pci_dev_show_local_cpu(dev, true, attr, buf); |
1da177e4 | 106 | } |
5136b2da | 107 | static DEVICE_ATTR_RO(local_cpulist); |
1da177e4 | 108 | |
dc2c2c9d YL |
109 | /* |
110 | * PCI Bus Class Devices | |
111 | */ | |
56039e65 GKH |
112 | static ssize_t cpuaffinity_show(struct device *dev, |
113 | struct device_attribute *attr, char *buf) | |
dc2c2c9d | 114 | { |
5aaba363 SH |
115 | const struct cpumask *cpumask = cpumask_of_pcibus(to_pci_bus(dev)); |
116 | ||
117 | return cpumap_print_to_pagebuf(false, buf, cpumask); | |
dc2c2c9d | 118 | } |
56039e65 | 119 | static DEVICE_ATTR_RO(cpuaffinity); |
dc2c2c9d | 120 | |
56039e65 GKH |
121 | static ssize_t cpulistaffinity_show(struct device *dev, |
122 | struct device_attribute *attr, char *buf) | |
dc2c2c9d | 123 | { |
5aaba363 SH |
124 | const struct cpumask *cpumask = cpumask_of_pcibus(to_pci_bus(dev)); |
125 | ||
126 | return cpumap_print_to_pagebuf(true, buf, cpumask); | |
dc2c2c9d | 127 | } |
56039e65 | 128 | static DEVICE_ATTR_RO(cpulistaffinity); |
dc2c2c9d | 129 | |
1da177e4 | 130 | /* show resources */ |
3c78bc61 RD |
131 | static ssize_t resource_show(struct device *dev, struct device_attribute *attr, |
132 | char *buf) | |
1da177e4 | 133 | { |
3c78bc61 RD |
134 | struct pci_dev *pci_dev = to_pci_dev(dev); |
135 | char *str = buf; | |
1da177e4 | 136 | int i; |
fde09c6d | 137 | int max; |
e31dd6e4 | 138 | resource_size_t start, end; |
1da177e4 LT |
139 | |
140 | if (pci_dev->subordinate) | |
141 | max = DEVICE_COUNT_RESOURCE; | |
fde09c6d YZ |
142 | else |
143 | max = PCI_BRIDGE_RESOURCES; | |
1da177e4 LT |
144 | |
145 | for (i = 0; i < max; i++) { | |
2311b1f2 ME |
146 | struct resource *res = &pci_dev->resource[i]; |
147 | pci_resource_to_user(pci_dev, i, res, &start, &end); | |
3c78bc61 | 148 | str += sprintf(str, "0x%016llx 0x%016llx 0x%016llx\n", |
2311b1f2 ME |
149 | (unsigned long long)start, |
150 | (unsigned long long)end, | |
151 | (unsigned long long)res->flags); | |
1da177e4 LT |
152 | } |
153 | return (str - buf); | |
154 | } | |
5136b2da | 155 | static DEVICE_ATTR_RO(resource); |
1da177e4 | 156 | |
3c78bc61 RD |
157 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, |
158 | char *buf) | |
9888549e GKH |
159 | { |
160 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
161 | ||
89ec3dcf | 162 | return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02X\n", |
9888549e GKH |
163 | pci_dev->vendor, pci_dev->device, |
164 | pci_dev->subsystem_vendor, pci_dev->subsystem_device, | |
165 | (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8), | |
166 | (u8)(pci_dev->class)); | |
167 | } | |
5136b2da | 168 | static DEVICE_ATTR_RO(modalias); |
bae94d02 | 169 | |
d8e7d53a | 170 | static ssize_t enable_store(struct device *dev, struct device_attribute *attr, |
3c78bc61 | 171 | const char *buf, size_t count) |
9f125d30 AV |
172 | { |
173 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 174 | unsigned long val; |
9a994e8e | 175 | ssize_t result = kstrtoul(buf, 0, &val); |
92425a40 TP |
176 | |
177 | if (result < 0) | |
178 | return result; | |
9f125d30 AV |
179 | |
180 | /* this can crash the machine when done on the "wrong" device */ | |
181 | if (!capable(CAP_SYS_ADMIN)) | |
92425a40 | 182 | return -EPERM; |
9f125d30 | 183 | |
92425a40 | 184 | if (!val) { |
296ccb08 | 185 | if (pci_is_enabled(pdev)) |
bae94d02 IPG |
186 | pci_disable_device(pdev); |
187 | else | |
188 | result = -EIO; | |
92425a40 | 189 | } else |
bae94d02 | 190 | result = pci_enable_device(pdev); |
9f125d30 | 191 | |
bae94d02 IPG |
192 | return result < 0 ? result : count; |
193 | } | |
194 | ||
d8e7d53a | 195 | static ssize_t enable_show(struct device *dev, struct device_attribute *attr, |
3c78bc61 | 196 | char *buf) |
bae94d02 IPG |
197 | { |
198 | struct pci_dev *pdev; | |
9f125d30 | 199 | |
3c78bc61 RD |
200 | pdev = to_pci_dev(dev); |
201 | return sprintf(buf, "%u\n", atomic_read(&pdev->enable_cnt)); | |
9f125d30 | 202 | } |
d8e7d53a | 203 | static DEVICE_ATTR_RW(enable); |
9f125d30 | 204 | |
81bb0e19 | 205 | #ifdef CONFIG_NUMA |
63692df1 PB |
206 | static ssize_t numa_node_store(struct device *dev, |
207 | struct device_attribute *attr, const char *buf, | |
208 | size_t count) | |
209 | { | |
210 | struct pci_dev *pdev = to_pci_dev(dev); | |
211 | int node, ret; | |
212 | ||
213 | if (!capable(CAP_SYS_ADMIN)) | |
214 | return -EPERM; | |
215 | ||
216 | ret = kstrtoint(buf, 0, &node); | |
217 | if (ret) | |
218 | return ret; | |
219 | ||
3dcc8d39 MK |
220 | if ((node < 0 && node != NUMA_NO_NODE) || node >= MAX_NUMNODES) |
221 | return -EINVAL; | |
222 | ||
223 | if (node != NUMA_NO_NODE && !node_online(node)) | |
63692df1 PB |
224 | return -EINVAL; |
225 | ||
226 | add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK); | |
227 | dev_alert(&pdev->dev, FW_BUG "Overriding NUMA node to %d. Contact your vendor for updates.", | |
228 | node); | |
229 | ||
230 | dev->numa_node = node; | |
231 | return count; | |
232 | } | |
233 | ||
3c78bc61 RD |
234 | static ssize_t numa_node_show(struct device *dev, struct device_attribute *attr, |
235 | char *buf) | |
81bb0e19 | 236 | { |
3c78bc61 | 237 | return sprintf(buf, "%d\n", dev->numa_node); |
81bb0e19 | 238 | } |
63692df1 | 239 | static DEVICE_ATTR_RW(numa_node); |
81bb0e19 BG |
240 | #endif |
241 | ||
3c78bc61 RD |
242 | static ssize_t dma_mask_bits_show(struct device *dev, |
243 | struct device_attribute *attr, char *buf) | |
bb965401 YL |
244 | { |
245 | struct pci_dev *pdev = to_pci_dev(dev); | |
246 | ||
3c78bc61 | 247 | return sprintf(buf, "%d\n", fls64(pdev->dma_mask)); |
bb965401 | 248 | } |
5136b2da | 249 | static DEVICE_ATTR_RO(dma_mask_bits); |
bb965401 | 250 | |
3c78bc61 RD |
251 | static ssize_t consistent_dma_mask_bits_show(struct device *dev, |
252 | struct device_attribute *attr, | |
253 | char *buf) | |
bb965401 | 254 | { |
3c78bc61 | 255 | return sprintf(buf, "%d\n", fls64(dev->coherent_dma_mask)); |
bb965401 | 256 | } |
5136b2da | 257 | static DEVICE_ATTR_RO(consistent_dma_mask_bits); |
bb965401 | 258 | |
3c78bc61 RD |
259 | static ssize_t msi_bus_show(struct device *dev, struct device_attribute *attr, |
260 | char *buf) | |
fe97064c BG |
261 | { |
262 | struct pci_dev *pdev = to_pci_dev(dev); | |
468ff15a | 263 | struct pci_bus *subordinate = pdev->subordinate; |
fe97064c | 264 | |
468ff15a YW |
265 | return sprintf(buf, "%u\n", subordinate ? |
266 | !(subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI) | |
267 | : !pdev->no_msi); | |
fe97064c BG |
268 | } |
269 | ||
3c78bc61 RD |
270 | static ssize_t msi_bus_store(struct device *dev, struct device_attribute *attr, |
271 | const char *buf, size_t count) | |
fe97064c BG |
272 | { |
273 | struct pci_dev *pdev = to_pci_dev(dev); | |
468ff15a | 274 | struct pci_bus *subordinate = pdev->subordinate; |
92425a40 TP |
275 | unsigned long val; |
276 | ||
9a994e8e | 277 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 | 278 | return -EINVAL; |
fe97064c | 279 | |
fe97064c | 280 | if (!capable(CAP_SYS_ADMIN)) |
92425a40 | 281 | return -EPERM; |
fe97064c | 282 | |
f7625980 | 283 | /* |
468ff15a YW |
284 | * "no_msi" and "bus_flags" only affect what happens when a driver |
285 | * requests MSI or MSI-X. They don't affect any drivers that have | |
286 | * already requested MSI or MSI-X. | |
f7625980 | 287 | */ |
468ff15a YW |
288 | if (!subordinate) { |
289 | pdev->no_msi = !val; | |
290 | dev_info(&pdev->dev, "MSI/MSI-X %s for future drivers\n", | |
291 | val ? "allowed" : "disallowed"); | |
fe97064c | 292 | return count; |
fe97064c BG |
293 | } |
294 | ||
468ff15a YW |
295 | if (val) |
296 | subordinate->bus_flags &= ~PCI_BUS_FLAGS_NO_MSI; | |
297 | else | |
298 | subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; | |
299 | ||
300 | dev_info(&subordinate->dev, "MSI/MSI-X %s for future drivers of devices on this bus\n", | |
301 | val ? "allowed" : "disallowed"); | |
fe97064c BG |
302 | return count; |
303 | } | |
5136b2da | 304 | static DEVICE_ATTR_RW(msi_bus); |
9888549e | 305 | |
705b1aaa AC |
306 | static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf, |
307 | size_t count) | |
308 | { | |
309 | unsigned long val; | |
310 | struct pci_bus *b = NULL; | |
311 | ||
9a994e8e | 312 | if (kstrtoul(buf, 0, &val) < 0) |
705b1aaa AC |
313 | return -EINVAL; |
314 | ||
315 | if (val) { | |
9d16947b | 316 | pci_lock_rescan_remove(); |
705b1aaa AC |
317 | while ((b = pci_find_next_bus(b)) != NULL) |
318 | pci_rescan_bus(b); | |
9d16947b | 319 | pci_unlock_rescan_remove(); |
705b1aaa AC |
320 | } |
321 | return count; | |
322 | } | |
0f49ba55 | 323 | static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store); |
705b1aaa | 324 | |
bf22c90f | 325 | static struct attribute *pci_bus_attrs[] = { |
0f49ba55 GKH |
326 | &bus_attr_rescan.attr, |
327 | NULL, | |
328 | }; | |
329 | ||
330 | static const struct attribute_group pci_bus_group = { | |
331 | .attrs = pci_bus_attrs, | |
332 | }; | |
333 | ||
334 | const struct attribute_group *pci_bus_groups[] = { | |
335 | &pci_bus_group, | |
336 | NULL, | |
705b1aaa | 337 | }; |
77c27c7b | 338 | |
3c78bc61 RD |
339 | static ssize_t dev_rescan_store(struct device *dev, |
340 | struct device_attribute *attr, const char *buf, | |
341 | size_t count) | |
738a6396 AC |
342 | { |
343 | unsigned long val; | |
344 | struct pci_dev *pdev = to_pci_dev(dev); | |
345 | ||
9a994e8e | 346 | if (kstrtoul(buf, 0, &val) < 0) |
738a6396 AC |
347 | return -EINVAL; |
348 | ||
349 | if (val) { | |
9d16947b | 350 | pci_lock_rescan_remove(); |
738a6396 | 351 | pci_rescan_bus(pdev->bus); |
9d16947b | 352 | pci_unlock_rescan_remove(); |
738a6396 AC |
353 | } |
354 | return count; | |
355 | } | |
bf22c90f SK |
356 | static struct device_attribute dev_rescan_attr = __ATTR(rescan, |
357 | (S_IWUSR|S_IWGRP), | |
358 | NULL, dev_rescan_store); | |
738a6396 | 359 | |
3c78bc61 RD |
360 | static ssize_t remove_store(struct device *dev, struct device_attribute *attr, |
361 | const char *buf, size_t count) | |
77c27c7b | 362 | { |
77c27c7b | 363 | unsigned long val; |
77c27c7b | 364 | |
9a994e8e | 365 | if (kstrtoul(buf, 0, &val) < 0) |
77c27c7b AC |
366 | return -EINVAL; |
367 | ||
bc6caf02 TH |
368 | if (val && device_remove_file_self(dev, attr)) |
369 | pci_stop_and_remove_bus_device_locked(to_pci_dev(dev)); | |
77c27c7b AC |
370 | return count; |
371 | } | |
bf22c90f SK |
372 | static struct device_attribute dev_remove_attr = __ATTR(remove, |
373 | (S_IWUSR|S_IWGRP), | |
374 | NULL, remove_store); | |
b9d320fc | 375 | |
3c78bc61 RD |
376 | static ssize_t dev_bus_rescan_store(struct device *dev, |
377 | struct device_attribute *attr, | |
378 | const char *buf, size_t count) | |
b9d320fc YL |
379 | { |
380 | unsigned long val; | |
381 | struct pci_bus *bus = to_pci_bus(dev); | |
382 | ||
9a994e8e | 383 | if (kstrtoul(buf, 0, &val) < 0) |
b9d320fc YL |
384 | return -EINVAL; |
385 | ||
386 | if (val) { | |
9d16947b | 387 | pci_lock_rescan_remove(); |
2f320521 YL |
388 | if (!pci_is_root_bus(bus) && list_empty(&bus->devices)) |
389 | pci_rescan_bus_bridge_resize(bus->self); | |
390 | else | |
391 | pci_rescan_bus(bus); | |
9d16947b | 392 | pci_unlock_rescan_remove(); |
b9d320fc YL |
393 | } |
394 | return count; | |
395 | } | |
56039e65 | 396 | static DEVICE_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store); |
b9d320fc | 397 | |
fbb988be | 398 | #if defined(CONFIG_PM) && defined(CONFIG_ACPI) |
448bd857 HY |
399 | static ssize_t d3cold_allowed_store(struct device *dev, |
400 | struct device_attribute *attr, | |
401 | const char *buf, size_t count) | |
402 | { | |
403 | struct pci_dev *pdev = to_pci_dev(dev); | |
404 | unsigned long val; | |
405 | ||
9a994e8e | 406 | if (kstrtoul(buf, 0, &val) < 0) |
448bd857 HY |
407 | return -EINVAL; |
408 | ||
409 | pdev->d3cold_allowed = !!val; | |
9d26d3a8 MW |
410 | if (pdev->d3cold_allowed) |
411 | pci_d3cold_enable(pdev); | |
412 | else | |
413 | pci_d3cold_disable(pdev); | |
414 | ||
448bd857 HY |
415 | pm_runtime_resume(dev); |
416 | ||
417 | return count; | |
418 | } | |
419 | ||
420 | static ssize_t d3cold_allowed_show(struct device *dev, | |
421 | struct device_attribute *attr, char *buf) | |
422 | { | |
423 | struct pci_dev *pdev = to_pci_dev(dev); | |
3c78bc61 | 424 | return sprintf(buf, "%u\n", pdev->d3cold_allowed); |
448bd857 | 425 | } |
5136b2da | 426 | static DEVICE_ATTR_RW(d3cold_allowed); |
448bd857 HY |
427 | #endif |
428 | ||
dfc73e7a SO |
429 | #ifdef CONFIG_OF |
430 | static ssize_t devspec_show(struct device *dev, | |
431 | struct device_attribute *attr, char *buf) | |
432 | { | |
433 | struct pci_dev *pdev = to_pci_dev(dev); | |
434 | struct device_node *np = pci_device_to_OF_node(pdev); | |
435 | ||
436 | if (np == NULL || np->full_name == NULL) | |
437 | return 0; | |
438 | return sprintf(buf, "%s", np->full_name); | |
439 | } | |
440 | static DEVICE_ATTR_RO(devspec); | |
441 | #endif | |
442 | ||
1789382a DD |
443 | #ifdef CONFIG_PCI_IOV |
444 | static ssize_t sriov_totalvfs_show(struct device *dev, | |
445 | struct device_attribute *attr, | |
446 | char *buf) | |
447 | { | |
448 | struct pci_dev *pdev = to_pci_dev(dev); | |
449 | ||
bff73156 | 450 | return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); |
1789382a DD |
451 | } |
452 | ||
453 | ||
454 | static ssize_t sriov_numvfs_show(struct device *dev, | |
455 | struct device_attribute *attr, | |
456 | char *buf) | |
457 | { | |
458 | struct pci_dev *pdev = to_pci_dev(dev); | |
459 | ||
6b136724 | 460 | return sprintf(buf, "%u\n", pdev->sriov->num_VFs); |
1789382a DD |
461 | } |
462 | ||
463 | /* | |
faa48a50 BH |
464 | * num_vfs > 0; number of VFs to enable |
465 | * num_vfs = 0; disable all VFs | |
1789382a DD |
466 | * |
467 | * Note: SRIOV spec doesn't allow partial VF | |
faa48a50 | 468 | * disable, so it's all or none. |
1789382a DD |
469 | */ |
470 | static ssize_t sriov_numvfs_store(struct device *dev, | |
471 | struct device_attribute *attr, | |
472 | const char *buf, size_t count) | |
473 | { | |
474 | struct pci_dev *pdev = to_pci_dev(dev); | |
faa48a50 BH |
475 | int ret; |
476 | u16 num_vfs; | |
1789382a | 477 | |
faa48a50 BH |
478 | ret = kstrtou16(buf, 0, &num_vfs); |
479 | if (ret < 0) | |
480 | return ret; | |
481 | ||
482 | if (num_vfs > pci_sriov_get_totalvfs(pdev)) | |
483 | return -ERANGE; | |
484 | ||
485 | if (num_vfs == pdev->sriov->num_VFs) | |
486 | return count; /* no change */ | |
1789382a DD |
487 | |
488 | /* is PF driver loaded w/callback */ | |
489 | if (!pdev->driver || !pdev->driver->sriov_configure) { | |
faa48a50 | 490 | dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n"); |
1789382a DD |
491 | return -ENOSYS; |
492 | } | |
493 | ||
faa48a50 BH |
494 | if (num_vfs == 0) { |
495 | /* disable VFs */ | |
496 | ret = pdev->driver->sriov_configure(pdev, 0); | |
497 | if (ret < 0) | |
498 | return ret; | |
499 | return count; | |
1789382a DD |
500 | } |
501 | ||
faa48a50 BH |
502 | /* enable VFs */ |
503 | if (pdev->sriov->num_VFs) { | |
504 | dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n", | |
505 | pdev->sriov->num_VFs, num_vfs); | |
506 | return -EBUSY; | |
1789382a DD |
507 | } |
508 | ||
faa48a50 BH |
509 | ret = pdev->driver->sriov_configure(pdev, num_vfs); |
510 | if (ret < 0) | |
511 | return ret; | |
1789382a | 512 | |
faa48a50 BH |
513 | if (ret != num_vfs) |
514 | dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n", | |
515 | num_vfs, ret); | |
516 | ||
517 | return count; | |
1789382a DD |
518 | } |
519 | ||
520 | static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); | |
521 | static struct device_attribute sriov_numvfs_attr = | |
522 | __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), | |
523 | sriov_numvfs_show, sriov_numvfs_store); | |
524 | #endif /* CONFIG_PCI_IOV */ | |
525 | ||
782a985d AW |
526 | static ssize_t driver_override_store(struct device *dev, |
527 | struct device_attribute *attr, | |
528 | const char *buf, size_t count) | |
529 | { | |
530 | struct pci_dev *pdev = to_pci_dev(dev); | |
531 | char *driver_override, *old = pdev->driver_override, *cp; | |
532 | ||
4efe874a SL |
533 | /* We need to keep extra room for a newline */ |
534 | if (count >= (PAGE_SIZE - 1)) | |
782a985d AW |
535 | return -EINVAL; |
536 | ||
537 | driver_override = kstrndup(buf, count, GFP_KERNEL); | |
538 | if (!driver_override) | |
539 | return -ENOMEM; | |
540 | ||
541 | cp = strchr(driver_override, '\n'); | |
542 | if (cp) | |
543 | *cp = '\0'; | |
544 | ||
545 | if (strlen(driver_override)) { | |
546 | pdev->driver_override = driver_override; | |
547 | } else { | |
548 | kfree(driver_override); | |
549 | pdev->driver_override = NULL; | |
550 | } | |
551 | ||
552 | kfree(old); | |
553 | ||
554 | return count; | |
555 | } | |
556 | ||
557 | static ssize_t driver_override_show(struct device *dev, | |
558 | struct device_attribute *attr, char *buf) | |
559 | { | |
560 | struct pci_dev *pdev = to_pci_dev(dev); | |
561 | ||
4efe874a | 562 | return snprintf(buf, PAGE_SIZE, "%s\n", pdev->driver_override); |
782a985d AW |
563 | } |
564 | static DEVICE_ATTR_RW(driver_override); | |
565 | ||
bf22c90f | 566 | static struct attribute *pci_dev_attrs[] = { |
5136b2da GKH |
567 | &dev_attr_resource.attr, |
568 | &dev_attr_vendor.attr, | |
569 | &dev_attr_device.attr, | |
570 | &dev_attr_subsystem_vendor.attr, | |
571 | &dev_attr_subsystem_device.attr, | |
702ed3be | 572 | &dev_attr_revision.attr, |
5136b2da GKH |
573 | &dev_attr_class.attr, |
574 | &dev_attr_irq.attr, | |
575 | &dev_attr_local_cpus.attr, | |
576 | &dev_attr_local_cpulist.attr, | |
577 | &dev_attr_modalias.attr, | |
81bb0e19 | 578 | #ifdef CONFIG_NUMA |
5136b2da | 579 | &dev_attr_numa_node.attr, |
81bb0e19 | 580 | #endif |
5136b2da GKH |
581 | &dev_attr_dma_mask_bits.attr, |
582 | &dev_attr_consistent_dma_mask_bits.attr, | |
d8e7d53a | 583 | &dev_attr_enable.attr, |
5136b2da GKH |
584 | &dev_attr_broken_parity_status.attr, |
585 | &dev_attr_msi_bus.attr, | |
fbb988be | 586 | #if defined(CONFIG_PM) && defined(CONFIG_ACPI) |
5136b2da | 587 | &dev_attr_d3cold_allowed.attr, |
dfc73e7a SO |
588 | #endif |
589 | #ifdef CONFIG_OF | |
590 | &dev_attr_devspec.attr, | |
77c27c7b | 591 | #endif |
782a985d | 592 | &dev_attr_driver_override.attr, |
5136b2da GKH |
593 | NULL, |
594 | }; | |
595 | ||
596 | static const struct attribute_group pci_dev_group = { | |
597 | .attrs = pci_dev_attrs, | |
598 | }; | |
599 | ||
600 | const struct attribute_group *pci_dev_groups[] = { | |
601 | &pci_dev_group, | |
602 | NULL, | |
1da177e4 LT |
603 | }; |
604 | ||
56039e65 GKH |
605 | static struct attribute *pcibus_attrs[] = { |
606 | &dev_attr_rescan.attr, | |
607 | &dev_attr_cpuaffinity.attr, | |
608 | &dev_attr_cpulistaffinity.attr, | |
609 | NULL, | |
610 | }; | |
611 | ||
612 | static const struct attribute_group pcibus_group = { | |
613 | .attrs = pcibus_attrs, | |
614 | }; | |
615 | ||
616 | const struct attribute_group *pcibus_groups[] = { | |
617 | &pcibus_group, | |
618 | NULL, | |
b9d320fc YL |
619 | }; |
620 | ||
3c78bc61 RD |
621 | static ssize_t boot_vga_show(struct device *dev, struct device_attribute *attr, |
622 | char *buf) | |
217f45de DA |
623 | { |
624 | struct pci_dev *pdev = to_pci_dev(dev); | |
1a39b310 MG |
625 | struct pci_dev *vga_dev = vga_default_device(); |
626 | ||
627 | if (vga_dev) | |
628 | return sprintf(buf, "%u\n", (pdev == vga_dev)); | |
217f45de DA |
629 | |
630 | return sprintf(buf, "%u\n", | |
631 | !!(pdev->resource[PCI_ROM_RESOURCE].flags & | |
632 | IORESOURCE_ROM_SHADOW)); | |
633 | } | |
bf22c90f | 634 | static struct device_attribute vga_attr = __ATTR_RO(boot_vga); |
217f45de | 635 | |
3c78bc61 RD |
636 | static ssize_t pci_read_config(struct file *filp, struct kobject *kobj, |
637 | struct bin_attribute *bin_attr, char *buf, | |
638 | loff_t off, size_t count) | |
1da177e4 | 639 | { |
554a6037 | 640 | struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj)); |
1da177e4 LT |
641 | unsigned int size = 64; |
642 | loff_t init_off = off; | |
3c78bc61 | 643 | u8 *data = (u8 *) buf; |
1da177e4 LT |
644 | |
645 | /* Several chips lock up trying to read undefined config space */ | |
ab0fa82b | 646 | if (file_ns_capable(filp, &init_user_ns, CAP_SYS_ADMIN)) |
1da177e4 | 647 | size = dev->cfg_size; |
3c78bc61 | 648 | else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) |
1da177e4 | 649 | size = 128; |
1da177e4 LT |
650 | |
651 | if (off > size) | |
652 | return 0; | |
653 | if (off + count > size) { | |
654 | size -= off; | |
655 | count = size; | |
656 | } else { | |
657 | size = count; | |
658 | } | |
659 | ||
3d8387ef HY |
660 | pci_config_pm_runtime_get(dev); |
661 | ||
4c0619ad SS |
662 | if ((off & 1) && size) { |
663 | u8 val; | |
e04b0ea2 | 664 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 665 | data[off - init_off] = val; |
1da177e4 | 666 | off++; |
4c0619ad SS |
667 | size--; |
668 | } | |
669 | ||
670 | if ((off & 3) && size > 2) { | |
671 | u16 val; | |
e04b0ea2 | 672 | pci_user_read_config_word(dev, off, &val); |
4c0619ad SS |
673 | data[off - init_off] = val & 0xff; |
674 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
675 | off += 2; | |
676 | size -= 2; | |
1da177e4 LT |
677 | } |
678 | ||
679 | while (size > 3) { | |
4c0619ad | 680 | u32 val; |
e04b0ea2 | 681 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad SS |
682 | data[off - init_off] = val & 0xff; |
683 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
684 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
685 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
686 | off += 4; |
687 | size -= 4; | |
688 | } | |
689 | ||
4c0619ad SS |
690 | if (size >= 2) { |
691 | u16 val; | |
e04b0ea2 | 692 | pci_user_read_config_word(dev, off, &val); |
4c0619ad SS |
693 | data[off - init_off] = val & 0xff; |
694 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
695 | off += 2; | |
696 | size -= 2; | |
697 | } | |
698 | ||
699 | if (size > 0) { | |
700 | u8 val; | |
e04b0ea2 | 701 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 702 | data[off - init_off] = val; |
1da177e4 LT |
703 | off++; |
704 | --size; | |
705 | } | |
706 | ||
3d8387ef HY |
707 | pci_config_pm_runtime_put(dev); |
708 | ||
1da177e4 LT |
709 | return count; |
710 | } | |
711 | ||
3c78bc61 RD |
712 | static ssize_t pci_write_config(struct file *filp, struct kobject *kobj, |
713 | struct bin_attribute *bin_attr, char *buf, | |
714 | loff_t off, size_t count) | |
1da177e4 | 715 | { |
554a6037 | 716 | struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj)); |
1da177e4 LT |
717 | unsigned int size = count; |
718 | loff_t init_off = off; | |
3c78bc61 | 719 | u8 *data = (u8 *) buf; |
1da177e4 LT |
720 | |
721 | if (off > dev->cfg_size) | |
722 | return 0; | |
723 | if (off + count > dev->cfg_size) { | |
724 | size = dev->cfg_size - off; | |
725 | count = size; | |
726 | } | |
f7625980 | 727 | |
3d8387ef HY |
728 | pci_config_pm_runtime_get(dev); |
729 | ||
4c0619ad | 730 | if ((off & 1) && size) { |
e04b0ea2 | 731 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 732 | off++; |
4c0619ad | 733 | size--; |
1da177e4 | 734 | } |
f7625980 | 735 | |
4c0619ad SS |
736 | if ((off & 3) && size > 2) { |
737 | u16 val = data[off - init_off]; | |
738 | val |= (u16) data[off - init_off + 1] << 8; | |
3c78bc61 RD |
739 | pci_user_write_config_word(dev, off, val); |
740 | off += 2; | |
741 | size -= 2; | |
742 | } | |
1da177e4 LT |
743 | |
744 | while (size > 3) { | |
4c0619ad SS |
745 | u32 val = data[off - init_off]; |
746 | val |= (u32) data[off - init_off + 1] << 8; | |
747 | val |= (u32) data[off - init_off + 2] << 16; | |
748 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 749 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
750 | off += 4; |
751 | size -= 4; | |
752 | } | |
f7625980 | 753 | |
4c0619ad SS |
754 | if (size >= 2) { |
755 | u16 val = data[off - init_off]; | |
756 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 757 | pci_user_write_config_word(dev, off, val); |
4c0619ad SS |
758 | off += 2; |
759 | size -= 2; | |
760 | } | |
1da177e4 | 761 | |
4c0619ad | 762 | if (size) { |
e04b0ea2 | 763 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
764 | off++; |
765 | --size; | |
766 | } | |
767 | ||
3d8387ef HY |
768 | pci_config_pm_runtime_put(dev); |
769 | ||
1da177e4 LT |
770 | return count; |
771 | } | |
772 | ||
3c78bc61 RD |
773 | static ssize_t read_vpd_attr(struct file *filp, struct kobject *kobj, |
774 | struct bin_attribute *bin_attr, char *buf, | |
775 | loff_t off, size_t count) | |
94e61088 | 776 | { |
554a6037 | 777 | struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj)); |
94e61088 | 778 | |
f52e5629 HR |
779 | if (bin_attr->size > 0) { |
780 | if (off > bin_attr->size) | |
781 | count = 0; | |
782 | else if (count > bin_attr->size - off) | |
783 | count = bin_attr->size - off; | |
784 | } | |
94e61088 | 785 | |
287d19ce | 786 | return pci_read_vpd(dev, off, count, buf); |
94e61088 BH |
787 | } |
788 | ||
3c78bc61 RD |
789 | static ssize_t write_vpd_attr(struct file *filp, struct kobject *kobj, |
790 | struct bin_attribute *bin_attr, char *buf, | |
791 | loff_t off, size_t count) | |
94e61088 | 792 | { |
554a6037 | 793 | struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj)); |
94e61088 | 794 | |
f52e5629 HR |
795 | if (bin_attr->size > 0) { |
796 | if (off > bin_attr->size) | |
797 | count = 0; | |
798 | else if (count > bin_attr->size - off) | |
799 | count = bin_attr->size - off; | |
800 | } | |
94e61088 | 801 | |
287d19ce | 802 | return pci_write_vpd(dev, off, count, buf); |
94e61088 BH |
803 | } |
804 | ||
1da177e4 LT |
805 | #ifdef HAVE_PCI_LEGACY |
806 | /** | |
807 | * pci_read_legacy_io - read byte(s) from legacy I/O port space | |
2c3c8bea | 808 | * @filp: open sysfs file |
1da177e4 | 809 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 810 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
811 | * @buf: buffer to store results |
812 | * @off: offset into legacy I/O port space | |
813 | * @count: number of bytes to read | |
814 | * | |
815 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
816 | * callback routine (pci_legacy_read). | |
817 | */ | |
3c78bc61 RD |
818 | static ssize_t pci_read_legacy_io(struct file *filp, struct kobject *kobj, |
819 | struct bin_attribute *bin_attr, char *buf, | |
820 | loff_t off, size_t count) | |
1da177e4 | 821 | { |
554a6037 | 822 | struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); |
1da177e4 | 823 | |
3c78bc61 RD |
824 | /* Only support 1, 2 or 4 byte accesses */ |
825 | if (count != 1 && count != 2 && count != 4) | |
826 | return -EINVAL; | |
1da177e4 | 827 | |
3c78bc61 | 828 | return pci_legacy_read(bus, off, (u32 *)buf, count); |
1da177e4 LT |
829 | } |
830 | ||
831 | /** | |
832 | * pci_write_legacy_io - write byte(s) to legacy I/O port space | |
2c3c8bea | 833 | * @filp: open sysfs file |
1da177e4 | 834 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 835 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
836 | * @buf: buffer containing value to be written |
837 | * @off: offset into legacy I/O port space | |
838 | * @count: number of bytes to write | |
839 | * | |
840 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
841 | * callback routine (pci_legacy_write). | |
842 | */ | |
3c78bc61 RD |
843 | static ssize_t pci_write_legacy_io(struct file *filp, struct kobject *kobj, |
844 | struct bin_attribute *bin_attr, char *buf, | |
845 | loff_t off, size_t count) | |
1da177e4 | 846 | { |
554a6037 | 847 | struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); |
1da177e4 | 848 | |
3c78bc61 RD |
849 | /* Only support 1, 2 or 4 byte accesses */ |
850 | if (count != 1 && count != 2 && count != 4) | |
851 | return -EINVAL; | |
852 | ||
853 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
1da177e4 LT |
854 | } |
855 | ||
856 | /** | |
857 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
2c3c8bea | 858 | * @filp: open sysfs file |
1da177e4 LT |
859 | * @kobj: kobject corresponding to device to be mapped |
860 | * @attr: struct bin_attribute for this file | |
861 | * @vma: struct vm_area_struct passed to mmap | |
862 | * | |
f19aeb1f | 863 | * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap |
1da177e4 LT |
864 | * legacy memory space (first meg of bus space) into application virtual |
865 | * memory space. | |
866 | */ | |
3c78bc61 RD |
867 | static int pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, |
868 | struct bin_attribute *attr, | |
869 | struct vm_area_struct *vma) | |
1da177e4 | 870 | { |
554a6037 | 871 | struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); |
1da177e4 | 872 | |
3c78bc61 | 873 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); |
f19aeb1f BH |
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 | */ | |
3c78bc61 RD |
887 | static int pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, |
888 | struct bin_attribute *attr, | |
889 | struct vm_area_struct *vma) | |
f19aeb1f | 890 | { |
554a6037 | 891 | struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); |
f19aeb1f | 892 | |
3c78bc61 | 893 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); |
f19aeb1f BH |
894 | } |
895 | ||
10a0ef39 IK |
896 | /** |
897 | * pci_adjust_legacy_attr - adjustment of legacy file attributes | |
898 | * @b: bus to create files under | |
899 | * @mmap_type: I/O port or memory | |
900 | * | |
901 | * Stub implementation. Can be overridden by arch if necessary. | |
902 | */ | |
3c78bc61 RD |
903 | void __weak pci_adjust_legacy_attr(struct pci_bus *b, |
904 | enum pci_mmap_state mmap_type) | |
10a0ef39 | 905 | { |
10a0ef39 IK |
906 | } |
907 | ||
f19aeb1f BH |
908 | /** |
909 | * pci_create_legacy_files - create legacy I/O port and memory files | |
910 | * @b: bus to create files under | |
911 | * | |
912 | * Some platforms allow access to legacy I/O port and ISA memory space on | |
913 | * a per-bus basis. This routine creates the files and ties them into | |
914 | * their associated read, write and mmap files from pci-sysfs.c | |
915 | * | |
25985edc | 916 | * On error unwind, but don't propagate the error to the caller |
f19aeb1f BH |
917 | * as it is ok to set up the PCI bus without these files. |
918 | */ | |
919 | void pci_create_legacy_files(struct pci_bus *b) | |
920 | { | |
921 | int error; | |
922 | ||
923 | b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, | |
924 | GFP_ATOMIC); | |
925 | if (!b->legacy_io) | |
926 | goto kzalloc_err; | |
927 | ||
62e877b8 | 928 | sysfs_bin_attr_init(b->legacy_io); |
f19aeb1f BH |
929 | b->legacy_io->attr.name = "legacy_io"; |
930 | b->legacy_io->size = 0xffff; | |
931 | b->legacy_io->attr.mode = S_IRUSR | S_IWUSR; | |
932 | b->legacy_io->read = pci_read_legacy_io; | |
933 | b->legacy_io->write = pci_write_legacy_io; | |
934 | b->legacy_io->mmap = pci_mmap_legacy_io; | |
10a0ef39 | 935 | pci_adjust_legacy_attr(b, pci_mmap_io); |
f19aeb1f BH |
936 | error = device_create_bin_file(&b->dev, b->legacy_io); |
937 | if (error) | |
938 | goto legacy_io_err; | |
939 | ||
940 | /* Allocated above after the legacy_io struct */ | |
941 | b->legacy_mem = b->legacy_io + 1; | |
6757eca3 | 942 | sysfs_bin_attr_init(b->legacy_mem); |
f19aeb1f BH |
943 | b->legacy_mem->attr.name = "legacy_mem"; |
944 | b->legacy_mem->size = 1024*1024; | |
945 | b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR; | |
946 | b->legacy_mem->mmap = pci_mmap_legacy_mem; | |
10a0ef39 | 947 | pci_adjust_legacy_attr(b, pci_mmap_mem); |
f19aeb1f BH |
948 | error = device_create_bin_file(&b->dev, b->legacy_mem); |
949 | if (error) | |
950 | goto legacy_mem_err; | |
951 | ||
952 | return; | |
953 | ||
954 | legacy_mem_err: | |
955 | device_remove_bin_file(&b->dev, b->legacy_io); | |
956 | legacy_io_err: | |
957 | kfree(b->legacy_io); | |
958 | b->legacy_io = NULL; | |
959 | kzalloc_err: | |
227f0647 | 960 | printk(KERN_WARNING "pci: warning: could not create legacy I/O port and ISA memory resources to sysfs\n"); |
f19aeb1f BH |
961 | return; |
962 | } | |
963 | ||
964 | void pci_remove_legacy_files(struct pci_bus *b) | |
965 | { | |
966 | if (b->legacy_io) { | |
967 | device_remove_bin_file(&b->dev, b->legacy_io); | |
968 | device_remove_bin_file(&b->dev, b->legacy_mem); | |
969 | kfree(b->legacy_io); /* both are allocated here */ | |
970 | } | |
1da177e4 LT |
971 | } |
972 | #endif /* HAVE_PCI_LEGACY */ | |
973 | ||
974 | #ifdef HAVE_PCI_MMAP | |
b5ff7df3 | 975 | |
3b519e4e MW |
976 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, |
977 | enum pci_mmap_api mmap_api) | |
b5ff7df3 | 978 | { |
3b519e4e | 979 | unsigned long nr, start, size, pci_start; |
b5ff7df3 | 980 | |
3b519e4e MW |
981 | if (pci_resource_len(pdev, resno) == 0) |
982 | return 0; | |
64b00175 | 983 | nr = vma_pages(vma); |
b5ff7df3 | 984 | start = vma->vm_pgoff; |
88e7df0b | 985 | size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; |
8c05cd08 | 986 | pci_start = (mmap_api == PCI_MMAP_PROCFS) ? |
3b519e4e MW |
987 | pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; |
988 | if (start >= pci_start && start < pci_start + size && | |
989 | start + nr <= pci_start + size) | |
b5ff7df3 | 990 | return 1; |
b5ff7df3 LT |
991 | return 0; |
992 | } | |
993 | ||
1da177e4 LT |
994 | /** |
995 | * pci_mmap_resource - map a PCI resource into user memory space | |
996 | * @kobj: kobject for mapping | |
997 | * @attr: struct bin_attribute for the file being mapped | |
998 | * @vma: struct vm_area_struct passed into the mmap | |
45aec1ae | 999 | * @write_combine: 1 for write_combine mapping |
1da177e4 LT |
1000 | * |
1001 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
1da177e4 | 1002 | */ |
3c78bc61 RD |
1003 | static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, |
1004 | struct vm_area_struct *vma, int write_combine) | |
1da177e4 | 1005 | { |
554a6037 | 1006 | struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); |
a3f5835a | 1007 | struct resource *res = attr->private; |
1da177e4 | 1008 | enum pci_mmap_state mmap_type; |
e31dd6e4 | 1009 | resource_size_t start, end; |
2311b1f2 | 1010 | int i; |
1da177e4 | 1011 | |
2311b1f2 ME |
1012 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
1013 | if (res == &pdev->resource[i]) | |
1014 | break; | |
1015 | if (i >= PCI_ROM_RESOURCE) | |
1016 | return -ENODEV; | |
1017 | ||
ca620723 BH |
1018 | if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(res->start)) |
1019 | return -EINVAL; | |
1020 | ||
3b519e4e | 1021 | if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { |
227f0647 | 1022 | 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 |
1023 | current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, |
1024 | pci_name(pdev), i, | |
e25cd062 RD |
1025 | (u64)pci_resource_start(pdev, i), |
1026 | (u64)pci_resource_len(pdev, i)); | |
b5ff7df3 | 1027 | return -EINVAL; |
3b519e4e | 1028 | } |
b5ff7df3 | 1029 | |
2311b1f2 ME |
1030 | /* pci_mmap_page_range() expects the same kind of entry as coming |
1031 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
1032 | * different from the resource itself, arch will do necessary fixup. | |
1033 | */ | |
1034 | pci_resource_to_user(pdev, i, res, &start, &end); | |
1035 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 | 1036 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
45aec1ae | 1037 | return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); |
1038 | } | |
1039 | ||
3c78bc61 RD |
1040 | static int pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, |
1041 | struct bin_attribute *attr, | |
1042 | struct vm_area_struct *vma) | |
45aec1ae | 1043 | { |
1044 | return pci_mmap_resource(kobj, attr, vma, 0); | |
1045 | } | |
1046 | ||
3c78bc61 RD |
1047 | static int pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, |
1048 | struct bin_attribute *attr, | |
1049 | struct vm_area_struct *vma) | |
45aec1ae | 1050 | { |
1051 | return pci_mmap_resource(kobj, attr, vma, 1); | |
1da177e4 LT |
1052 | } |
1053 | ||
3c78bc61 RD |
1054 | static ssize_t pci_resource_io(struct file *filp, struct kobject *kobj, |
1055 | struct bin_attribute *attr, char *buf, | |
1056 | loff_t off, size_t count, bool write) | |
8633328b | 1057 | { |
554a6037 | 1058 | struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); |
8633328b AW |
1059 | struct resource *res = attr->private; |
1060 | unsigned long port = off; | |
1061 | int i; | |
1062 | ||
1063 | for (i = 0; i < PCI_ROM_RESOURCE; i++) | |
1064 | if (res == &pdev->resource[i]) | |
1065 | break; | |
1066 | if (i >= PCI_ROM_RESOURCE) | |
1067 | return -ENODEV; | |
1068 | ||
1069 | port += pci_resource_start(pdev, i); | |
1070 | ||
1071 | if (port > pci_resource_end(pdev, i)) | |
1072 | return 0; | |
1073 | ||
1074 | if (port + count - 1 > pci_resource_end(pdev, i)) | |
1075 | return -EINVAL; | |
1076 | ||
1077 | switch (count) { | |
1078 | case 1: | |
1079 | if (write) | |
1080 | outb(*(u8 *)buf, port); | |
1081 | else | |
1082 | *(u8 *)buf = inb(port); | |
1083 | return 1; | |
1084 | case 2: | |
1085 | if (write) | |
1086 | outw(*(u16 *)buf, port); | |
1087 | else | |
1088 | *(u16 *)buf = inw(port); | |
1089 | return 2; | |
1090 | case 4: | |
1091 | if (write) | |
1092 | outl(*(u32 *)buf, port); | |
1093 | else | |
1094 | *(u32 *)buf = inl(port); | |
1095 | return 4; | |
1096 | } | |
1097 | return -EINVAL; | |
1098 | } | |
1099 | ||
3c78bc61 RD |
1100 | static ssize_t pci_read_resource_io(struct file *filp, struct kobject *kobj, |
1101 | struct bin_attribute *attr, char *buf, | |
1102 | loff_t off, size_t count) | |
8633328b AW |
1103 | { |
1104 | return pci_resource_io(filp, kobj, attr, buf, off, count, false); | |
1105 | } | |
1106 | ||
3c78bc61 RD |
1107 | static ssize_t pci_write_resource_io(struct file *filp, struct kobject *kobj, |
1108 | struct bin_attribute *attr, char *buf, | |
1109 | loff_t off, size_t count) | |
8633328b AW |
1110 | { |
1111 | return pci_resource_io(filp, kobj, attr, buf, off, count, true); | |
1112 | } | |
1113 | ||
b19441af GKH |
1114 | /** |
1115 | * pci_remove_resource_files - cleanup resource files | |
cffb2faf | 1116 | * @pdev: dev to cleanup |
b19441af | 1117 | * |
cffb2faf | 1118 | * If we created resource files for @pdev, remove them from sysfs and |
b19441af GKH |
1119 | * free their resources. |
1120 | */ | |
3c78bc61 | 1121 | static void pci_remove_resource_files(struct pci_dev *pdev) |
b19441af GKH |
1122 | { |
1123 | int i; | |
1124 | ||
1125 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1126 | struct bin_attribute *res_attr; | |
1127 | ||
1128 | res_attr = pdev->res_attr[i]; | |
1129 | if (res_attr) { | |
1130 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1131 | kfree(res_attr); | |
1132 | } | |
45aec1ae | 1133 | |
1134 | res_attr = pdev->res_attr_wc[i]; | |
1135 | if (res_attr) { | |
1136 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1137 | kfree(res_attr); | |
1138 | } | |
b19441af GKH |
1139 | } |
1140 | } | |
1141 | ||
45aec1ae | 1142 | static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) |
1143 | { | |
1144 | /* allocate attribute structure, piggyback attribute name */ | |
1145 | int name_len = write_combine ? 13 : 10; | |
1146 | struct bin_attribute *res_attr; | |
bd5174df | 1147 | char *res_attr_name; |
45aec1ae | 1148 | int retval; |
1149 | ||
1150 | res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); | |
bd5174df BH |
1151 | if (!res_attr) |
1152 | return -ENOMEM; | |
1153 | ||
1154 | res_attr_name = (char *)(res_attr + 1); | |
1155 | ||
1156 | sysfs_bin_attr_init(res_attr); | |
1157 | if (write_combine) { | |
1158 | pdev->res_attr_wc[num] = res_attr; | |
1159 | sprintf(res_attr_name, "resource%d_wc", num); | |
1160 | res_attr->mmap = pci_mmap_resource_wc; | |
1161 | } else { | |
1162 | pdev->res_attr[num] = res_attr; | |
1163 | sprintf(res_attr_name, "resource%d", num); | |
1164 | res_attr->mmap = pci_mmap_resource_uc; | |
1165 | } | |
1166 | if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { | |
1167 | res_attr->read = pci_read_resource_io; | |
1168 | res_attr->write = pci_write_resource_io; | |
1169 | } | |
1170 | res_attr->attr.name = res_attr_name; | |
1171 | res_attr->attr.mode = S_IRUSR | S_IWUSR; | |
1172 | res_attr->size = pci_resource_len(pdev, num); | |
1173 | res_attr->private = &pdev->resource[num]; | |
1174 | retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
1175 | if (retval) | |
1176 | kfree(res_attr); | |
45aec1ae | 1177 | |
1178 | return retval; | |
1179 | } | |
1180 | ||
1da177e4 LT |
1181 | /** |
1182 | * pci_create_resource_files - create resource files in sysfs for @dev | |
cffb2faf | 1183 | * @pdev: dev in question |
1da177e4 | 1184 | * |
cffb2faf | 1185 | * Walk the resources in @pdev creating files for each resource available. |
1da177e4 | 1186 | */ |
b19441af | 1187 | static int pci_create_resource_files(struct pci_dev *pdev) |
1da177e4 LT |
1188 | { |
1189 | int i; | |
b19441af | 1190 | int retval; |
1da177e4 LT |
1191 | |
1192 | /* Expose the PCI resources from this device as files */ | |
1193 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1da177e4 LT |
1194 | |
1195 | /* skip empty resources */ | |
1196 | if (!pci_resource_len(pdev, i)) | |
1197 | continue; | |
1198 | ||
45aec1ae | 1199 | retval = pci_create_attr(pdev, i, 0); |
1200 | /* for prefetchable resources, create a WC mappable file */ | |
1201 | if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) | |
1202 | retval = pci_create_attr(pdev, i, 1); | |
1203 | ||
1204 | if (retval) { | |
1205 | pci_remove_resource_files(pdev); | |
1206 | return retval; | |
1da177e4 LT |
1207 | } |
1208 | } | |
b19441af | 1209 | return 0; |
1da177e4 LT |
1210 | } |
1211 | #else /* !HAVE_PCI_MMAP */ | |
10a0ef39 IK |
1212 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } |
1213 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } | |
1da177e4 LT |
1214 | #endif /* HAVE_PCI_MMAP */ |
1215 | ||
1216 | /** | |
1217 | * pci_write_rom - used to enable access to the PCI ROM display | |
2c3c8bea | 1218 | * @filp: sysfs file |
1da177e4 | 1219 | * @kobj: kernel object handle |
cffb2faf | 1220 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1221 | * @buf: user input |
1222 | * @off: file offset | |
1223 | * @count: number of byte in input | |
1224 | * | |
1225 | * writing anything except 0 enables it | |
1226 | */ | |
3c78bc61 RD |
1227 | static ssize_t pci_write_rom(struct file *filp, struct kobject *kobj, |
1228 | struct bin_attribute *bin_attr, char *buf, | |
1229 | loff_t off, size_t count) | |
1da177e4 | 1230 | { |
554a6037 | 1231 | struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); |
1da177e4 LT |
1232 | |
1233 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
1234 | pdev->rom_attr_enabled = 0; | |
1235 | else | |
1236 | pdev->rom_attr_enabled = 1; | |
1237 | ||
1238 | return count; | |
1239 | } | |
1240 | ||
1241 | /** | |
1242 | * pci_read_rom - read a PCI ROM | |
2c3c8bea | 1243 | * @filp: sysfs file |
1da177e4 | 1244 | * @kobj: kernel object handle |
cffb2faf | 1245 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1246 | * @buf: where to put the data we read from the ROM |
1247 | * @off: file offset | |
1248 | * @count: number of bytes to read | |
1249 | * | |
1250 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
1251 | * device corresponding to @kobj. | |
1252 | */ | |
3c78bc61 RD |
1253 | static ssize_t pci_read_rom(struct file *filp, struct kobject *kobj, |
1254 | struct bin_attribute *bin_attr, char *buf, | |
1255 | loff_t off, size_t count) | |
1da177e4 | 1256 | { |
554a6037 | 1257 | struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); |
1da177e4 LT |
1258 | void __iomem *rom; |
1259 | size_t size; | |
1260 | ||
1261 | if (!pdev->rom_attr_enabled) | |
1262 | return -EINVAL; | |
f7625980 | 1263 | |
1da177e4 | 1264 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ |
97c44836 TN |
1265 | if (!rom || !size) |
1266 | return -EIO; | |
f7625980 | 1267 | |
1da177e4 LT |
1268 | if (off >= size) |
1269 | count = 0; | |
1270 | else { | |
1271 | if (off + count > size) | |
1272 | count = size - off; | |
f7625980 | 1273 | |
1da177e4 LT |
1274 | memcpy_fromio(buf, rom + off, count); |
1275 | } | |
1276 | pci_unmap_rom(pdev, rom); | |
f7625980 | 1277 | |
1da177e4 LT |
1278 | return count; |
1279 | } | |
1280 | ||
1281 | static struct bin_attribute pci_config_attr = { | |
1282 | .attr = { | |
1283 | .name = "config", | |
1284 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1285 | }, |
557848c3 | 1286 | .size = PCI_CFG_SPACE_SIZE, |
1da177e4 LT |
1287 | .read = pci_read_config, |
1288 | .write = pci_write_config, | |
1289 | }; | |
1290 | ||
1291 | static struct bin_attribute pcie_config_attr = { | |
1292 | .attr = { | |
1293 | .name = "config", | |
1294 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1295 | }, |
557848c3 | 1296 | .size = PCI_CFG_SPACE_EXP_SIZE, |
1da177e4 LT |
1297 | .read = pci_read_config, |
1298 | .write = pci_write_config, | |
1299 | }; | |
1300 | ||
3c78bc61 RD |
1301 | static ssize_t reset_store(struct device *dev, struct device_attribute *attr, |
1302 | const char *buf, size_t count) | |
711d5779 MT |
1303 | { |
1304 | struct pci_dev *pdev = to_pci_dev(dev); | |
1305 | unsigned long val; | |
9a994e8e | 1306 | ssize_t result = kstrtoul(buf, 0, &val); |
711d5779 MT |
1307 | |
1308 | if (result < 0) | |
1309 | return result; | |
1310 | ||
1311 | if (val != 1) | |
1312 | return -EINVAL; | |
447c5dd7 MS |
1313 | |
1314 | result = pci_reset_function(pdev); | |
1315 | if (result < 0) | |
1316 | return result; | |
1317 | ||
1318 | return count; | |
711d5779 MT |
1319 | } |
1320 | ||
1321 | static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store); | |
1322 | ||
280c73d3 ZY |
1323 | static int pci_create_capabilities_sysfs(struct pci_dev *dev) |
1324 | { | |
1325 | int retval; | |
1326 | struct bin_attribute *attr; | |
1327 | ||
1328 | /* If the device has VPD, try to expose it in sysfs. */ | |
1329 | if (dev->vpd) { | |
1330 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); | |
1331 | if (!attr) | |
1332 | return -ENOMEM; | |
1333 | ||
a07e4156 | 1334 | sysfs_bin_attr_init(attr); |
104daa71 | 1335 | attr->size = 0; |
280c73d3 ZY |
1336 | attr->attr.name = "vpd"; |
1337 | attr->attr.mode = S_IRUSR | S_IWUSR; | |
287d19ce SH |
1338 | attr->read = read_vpd_attr; |
1339 | attr->write = write_vpd_attr; | |
280c73d3 ZY |
1340 | retval = sysfs_create_bin_file(&dev->dev.kobj, attr); |
1341 | if (retval) { | |
0f12a4e2 | 1342 | kfree(attr); |
280c73d3 ZY |
1343 | return retval; |
1344 | } | |
1345 | dev->vpd->attr = attr; | |
1346 | } | |
1347 | ||
1348 | /* Active State Power Management */ | |
1349 | pcie_aspm_create_sysfs_dev_files(dev); | |
1350 | ||
711d5779 MT |
1351 | if (!pci_probe_reset_function(dev)) { |
1352 | retval = device_create_file(&dev->dev, &reset_attr); | |
1353 | if (retval) | |
1354 | goto error; | |
1355 | dev->reset_fn = 1; | |
1356 | } | |
280c73d3 | 1357 | return 0; |
711d5779 MT |
1358 | |
1359 | error: | |
1360 | pcie_aspm_remove_sysfs_dev_files(dev); | |
1361 | if (dev->vpd && dev->vpd->attr) { | |
1362 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1363 | kfree(dev->vpd->attr); | |
1364 | } | |
1365 | ||
1366 | return retval; | |
280c73d3 ZY |
1367 | } |
1368 | ||
3c78bc61 | 1369 | int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev) |
1da177e4 | 1370 | { |
b19441af | 1371 | int retval; |
ac0c302a | 1372 | int rom_size; |
280c73d3 | 1373 | struct bin_attribute *attr; |
b19441af | 1374 | |
1da177e4 LT |
1375 | if (!sysfs_initialized) |
1376 | return -EACCES; | |
1377 | ||
c20aecf6 | 1378 | if (pdev->cfg_size > PCI_CFG_SPACE_SIZE) |
b19441af | 1379 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
c20aecf6 JM |
1380 | else |
1381 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); | |
b19441af GKH |
1382 | if (retval) |
1383 | goto err; | |
1da177e4 | 1384 | |
b19441af GKH |
1385 | retval = pci_create_resource_files(pdev); |
1386 | if (retval) | |
280c73d3 ZY |
1387 | goto err_config_file; |
1388 | ||
1da177e4 | 1389 | /* If the device has a ROM, try to expose it in sysfs. */ |
ac0c302a | 1390 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); |
280c73d3 | 1391 | if (rom_size) { |
94e61088 | 1392 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); |
280c73d3 | 1393 | if (!attr) { |
b19441af | 1394 | retval = -ENOMEM; |
9890b12a | 1395 | goto err_resource_files; |
1da177e4 | 1396 | } |
a07e4156 | 1397 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1398 | attr->size = rom_size; |
1399 | attr->attr.name = "rom"; | |
ff29530e | 1400 | attr->attr.mode = S_IRUSR | S_IWUSR; |
280c73d3 ZY |
1401 | attr->read = pci_read_rom; |
1402 | attr->write = pci_write_rom; | |
1403 | retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); | |
1404 | if (retval) { | |
1405 | kfree(attr); | |
1406 | goto err_resource_files; | |
1407 | } | |
1408 | pdev->rom_attr = attr; | |
1da177e4 | 1409 | } |
280c73d3 | 1410 | |
280c73d3 ZY |
1411 | /* add sysfs entries for various capabilities */ |
1412 | retval = pci_create_capabilities_sysfs(pdev); | |
1413 | if (retval) | |
625e1d59 | 1414 | goto err_rom_file; |
7d715a6c | 1415 | |
911e1c9b N |
1416 | pci_create_firmware_label_files(pdev); |
1417 | ||
1da177e4 | 1418 | return 0; |
b19441af | 1419 | |
a2cd52ca | 1420 | err_rom_file: |
9d88b93b | 1421 | if (pdev->rom_attr) { |
94e61088 | 1422 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
280c73d3 ZY |
1423 | kfree(pdev->rom_attr); |
1424 | pdev->rom_attr = NULL; | |
1425 | } | |
9890b12a ME |
1426 | err_resource_files: |
1427 | pci_remove_resource_files(pdev); | |
94e61088 | 1428 | err_config_file: |
c20aecf6 | 1429 | if (pdev->cfg_size > PCI_CFG_SPACE_SIZE) |
b19441af | 1430 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
c20aecf6 JM |
1431 | else |
1432 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); | |
b19441af GKH |
1433 | err: |
1434 | return retval; | |
1da177e4 LT |
1435 | } |
1436 | ||
280c73d3 ZY |
1437 | static void pci_remove_capabilities_sysfs(struct pci_dev *dev) |
1438 | { | |
1439 | if (dev->vpd && dev->vpd->attr) { | |
1440 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1441 | kfree(dev->vpd->attr); | |
1442 | } | |
1443 | ||
1444 | pcie_aspm_remove_sysfs_dev_files(dev); | |
711d5779 MT |
1445 | if (dev->reset_fn) { |
1446 | device_remove_file(&dev->dev, &reset_attr); | |
1447 | dev->reset_fn = 0; | |
1448 | } | |
280c73d3 ZY |
1449 | } |
1450 | ||
1da177e4 LT |
1451 | /** |
1452 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
1453 | * @pdev: device whose entries we should free | |
1454 | * | |
1455 | * Cleanup when @pdev is removed from sysfs. | |
1456 | */ | |
1457 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
1458 | { | |
d67afe5e DM |
1459 | if (!sysfs_initialized) |
1460 | return; | |
1461 | ||
280c73d3 | 1462 | pci_remove_capabilities_sysfs(pdev); |
7d715a6c | 1463 | |
c20aecf6 | 1464 | if (pdev->cfg_size > PCI_CFG_SPACE_SIZE) |
1da177e4 | 1465 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
c20aecf6 JM |
1466 | else |
1467 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); | |
1da177e4 LT |
1468 | |
1469 | pci_remove_resource_files(pdev); | |
1470 | ||
9d88b93b | 1471 | if (pdev->rom_attr) { |
280c73d3 ZY |
1472 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
1473 | kfree(pdev->rom_attr); | |
9d88b93b | 1474 | pdev->rom_attr = NULL; |
1da177e4 | 1475 | } |
911e1c9b N |
1476 | |
1477 | pci_remove_firmware_label_files(pdev); | |
1da177e4 LT |
1478 | } |
1479 | ||
1480 | static int __init pci_sysfs_init(void) | |
1481 | { | |
1482 | struct pci_dev *pdev = NULL; | |
b19441af GKH |
1483 | int retval; |
1484 | ||
1da177e4 | 1485 | sysfs_initialized = 1; |
b19441af GKH |
1486 | for_each_pci_dev(pdev) { |
1487 | retval = pci_create_sysfs_dev_files(pdev); | |
151fc5df JL |
1488 | if (retval) { |
1489 | pci_dev_put(pdev); | |
b19441af | 1490 | return retval; |
151fc5df | 1491 | } |
b19441af | 1492 | } |
1da177e4 LT |
1493 | |
1494 | return 0; | |
1495 | } | |
40ee9e9f | 1496 | late_initcall(pci_sysfs_init); |
4e15c46b YL |
1497 | |
1498 | static struct attribute *pci_dev_dev_attrs[] = { | |
625e1d59 | 1499 | &vga_attr.attr, |
4e15c46b YL |
1500 | NULL, |
1501 | }; | |
1502 | ||
1503 | static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1504 | struct attribute *a, int n) |
4e15c46b | 1505 | { |
554a6037 | 1506 | struct device *dev = kobj_to_dev(kobj); |
625e1d59 YL |
1507 | struct pci_dev *pdev = to_pci_dev(dev); |
1508 | ||
1509 | if (a == &vga_attr.attr) | |
1510 | if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1511 | return 0; | |
1512 | ||
4e15c46b YL |
1513 | return a->mode; |
1514 | } | |
1515 | ||
dfab88be JL |
1516 | static struct attribute *pci_dev_hp_attrs[] = { |
1517 | &dev_remove_attr.attr, | |
1518 | &dev_rescan_attr.attr, | |
1519 | NULL, | |
1520 | }; | |
1521 | ||
1522 | static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1523 | struct attribute *a, int n) |
dfab88be | 1524 | { |
554a6037 | 1525 | struct device *dev = kobj_to_dev(kobj); |
dfab88be JL |
1526 | struct pci_dev *pdev = to_pci_dev(dev); |
1527 | ||
1528 | if (pdev->is_virtfn) | |
1529 | return 0; | |
1530 | ||
1531 | return a->mode; | |
1532 | } | |
1533 | ||
1534 | static struct attribute_group pci_dev_hp_attr_group = { | |
1535 | .attrs = pci_dev_hp_attrs, | |
1536 | .is_visible = pci_dev_hp_attrs_are_visible, | |
1537 | }; | |
1538 | ||
1789382a DD |
1539 | #ifdef CONFIG_PCI_IOV |
1540 | static struct attribute *sriov_dev_attrs[] = { | |
1541 | &sriov_totalvfs_attr.attr, | |
1542 | &sriov_numvfs_attr.attr, | |
1543 | NULL, | |
1544 | }; | |
1545 | ||
1546 | static umode_t sriov_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1547 | struct attribute *a, int n) |
1789382a | 1548 | { |
554a6037 | 1549 | struct device *dev = kobj_to_dev(kobj); |
1789382a DD |
1550 | |
1551 | if (!dev_is_pf(dev)) | |
1552 | return 0; | |
1553 | ||
1554 | return a->mode; | |
1555 | } | |
1556 | ||
1557 | static struct attribute_group sriov_dev_attr_group = { | |
1558 | .attrs = sriov_dev_attrs, | |
1559 | .is_visible = sriov_attrs_are_visible, | |
1560 | }; | |
1561 | #endif /* CONFIG_PCI_IOV */ | |
1562 | ||
4e15c46b YL |
1563 | static struct attribute_group pci_dev_attr_group = { |
1564 | .attrs = pci_dev_dev_attrs, | |
1565 | .is_visible = pci_dev_attrs_are_visible, | |
1566 | }; | |
1567 | ||
1568 | static const struct attribute_group *pci_dev_attr_groups[] = { | |
1569 | &pci_dev_attr_group, | |
dfab88be | 1570 | &pci_dev_hp_attr_group, |
1789382a DD |
1571 | #ifdef CONFIG_PCI_IOV |
1572 | &sriov_dev_attr_group, | |
1573 | #endif | |
4e15c46b YL |
1574 | NULL, |
1575 | }; | |
1576 | ||
1577 | struct device_type pci_dev_type = { | |
1578 | .groups = pci_dev_attr_groups, | |
1579 | }; |