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 | |
5aaba363 | 80 | static ssize_t pci_dev_show_local_cpu(struct device *dev, bool list, |
3c78bc61 | 81 | struct device_attribute *attr, char *buf) |
c489f5fb | 82 | { |
3be83050 | 83 | const struct cpumask *mask; |
4327edf6 | 84 | |
e0cd5160 | 85 | #ifdef CONFIG_NUMA |
6be954d1 DJ |
86 | mask = (dev_to_node(dev) == -1) ? cpu_online_mask : |
87 | cpumask_of_node(dev_to_node(dev)); | |
e0cd5160 | 88 | #else |
3be83050 | 89 | mask = cpumask_of_pcibus(to_pci_dev(dev)->bus); |
e0cd5160 | 90 | #endif |
5aaba363 | 91 | return cpumap_print_to_pagebuf(list, buf, mask); |
39106dcf MT |
92 | } |
93 | ||
c489f5fb | 94 | static ssize_t local_cpus_show(struct device *dev, |
3c78bc61 | 95 | struct device_attribute *attr, char *buf) |
c489f5fb | 96 | { |
5aaba363 | 97 | return pci_dev_show_local_cpu(dev, false, attr, buf); |
c489f5fb | 98 | } |
5136b2da | 99 | static DEVICE_ATTR_RO(local_cpus); |
39106dcf MT |
100 | |
101 | static ssize_t local_cpulist_show(struct device *dev, | |
3c78bc61 | 102 | struct device_attribute *attr, char *buf) |
39106dcf | 103 | { |
5aaba363 | 104 | return pci_dev_show_local_cpu(dev, true, attr, buf); |
1da177e4 | 105 | } |
5136b2da | 106 | static DEVICE_ATTR_RO(local_cpulist); |
1da177e4 | 107 | |
dc2c2c9d YL |
108 | /* |
109 | * PCI Bus Class Devices | |
110 | */ | |
56039e65 GKH |
111 | static ssize_t cpuaffinity_show(struct device *dev, |
112 | struct device_attribute *attr, char *buf) | |
dc2c2c9d | 113 | { |
5aaba363 SH |
114 | const struct cpumask *cpumask = cpumask_of_pcibus(to_pci_bus(dev)); |
115 | ||
116 | return cpumap_print_to_pagebuf(false, buf, cpumask); | |
dc2c2c9d | 117 | } |
56039e65 | 118 | static DEVICE_ATTR_RO(cpuaffinity); |
dc2c2c9d | 119 | |
56039e65 GKH |
120 | static ssize_t cpulistaffinity_show(struct device *dev, |
121 | struct device_attribute *attr, char *buf) | |
dc2c2c9d | 122 | { |
5aaba363 SH |
123 | const struct cpumask *cpumask = cpumask_of_pcibus(to_pci_bus(dev)); |
124 | ||
125 | return cpumap_print_to_pagebuf(true, buf, cpumask); | |
dc2c2c9d | 126 | } |
56039e65 | 127 | static DEVICE_ATTR_RO(cpulistaffinity); |
dc2c2c9d | 128 | |
1da177e4 | 129 | /* show resources */ |
3c78bc61 RD |
130 | static ssize_t resource_show(struct device *dev, struct device_attribute *attr, |
131 | char *buf) | |
1da177e4 | 132 | { |
3c78bc61 RD |
133 | struct pci_dev *pci_dev = to_pci_dev(dev); |
134 | char *str = buf; | |
1da177e4 | 135 | int i; |
fde09c6d | 136 | int max; |
e31dd6e4 | 137 | resource_size_t start, end; |
1da177e4 LT |
138 | |
139 | if (pci_dev->subordinate) | |
140 | max = DEVICE_COUNT_RESOURCE; | |
fde09c6d YZ |
141 | else |
142 | max = PCI_BRIDGE_RESOURCES; | |
1da177e4 LT |
143 | |
144 | for (i = 0; i < max; i++) { | |
2311b1f2 ME |
145 | struct resource *res = &pci_dev->resource[i]; |
146 | pci_resource_to_user(pci_dev, i, res, &start, &end); | |
3c78bc61 | 147 | str += sprintf(str, "0x%016llx 0x%016llx 0x%016llx\n", |
2311b1f2 ME |
148 | (unsigned long long)start, |
149 | (unsigned long long)end, | |
150 | (unsigned long long)res->flags); | |
1da177e4 LT |
151 | } |
152 | return (str - buf); | |
153 | } | |
5136b2da | 154 | static DEVICE_ATTR_RO(resource); |
1da177e4 | 155 | |
3c78bc61 RD |
156 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, |
157 | char *buf) | |
9888549e GK |
158 | { |
159 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
160 | ||
89ec3dcf | 161 | return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02X\n", |
9888549e GK |
162 | pci_dev->vendor, pci_dev->device, |
163 | pci_dev->subsystem_vendor, pci_dev->subsystem_device, | |
164 | (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8), | |
165 | (u8)(pci_dev->class)); | |
166 | } | |
5136b2da | 167 | static DEVICE_ATTR_RO(modalias); |
bae94d02 | 168 | |
d8e7d53a | 169 | static ssize_t enable_store(struct device *dev, struct device_attribute *attr, |
3c78bc61 | 170 | const char *buf, size_t count) |
9f125d30 AV |
171 | { |
172 | struct pci_dev *pdev = to_pci_dev(dev); | |
92425a40 | 173 | unsigned long val; |
9a994e8e | 174 | ssize_t result = kstrtoul(buf, 0, &val); |
92425a40 TP |
175 | |
176 | if (result < 0) | |
177 | return result; | |
9f125d30 AV |
178 | |
179 | /* this can crash the machine when done on the "wrong" device */ | |
180 | if (!capable(CAP_SYS_ADMIN)) | |
92425a40 | 181 | return -EPERM; |
9f125d30 | 182 | |
92425a40 | 183 | if (!val) { |
296ccb08 | 184 | if (pci_is_enabled(pdev)) |
bae94d02 IPG |
185 | pci_disable_device(pdev); |
186 | else | |
187 | result = -EIO; | |
92425a40 | 188 | } else |
bae94d02 | 189 | result = pci_enable_device(pdev); |
9f125d30 | 190 | |
bae94d02 IPG |
191 | return result < 0 ? result : count; |
192 | } | |
193 | ||
d8e7d53a | 194 | static ssize_t enable_show(struct device *dev, struct device_attribute *attr, |
3c78bc61 | 195 | char *buf) |
bae94d02 IPG |
196 | { |
197 | struct pci_dev *pdev; | |
9f125d30 | 198 | |
3c78bc61 RD |
199 | pdev = to_pci_dev(dev); |
200 | return sprintf(buf, "%u\n", atomic_read(&pdev->enable_cnt)); | |
9f125d30 | 201 | } |
d8e7d53a | 202 | static DEVICE_ATTR_RW(enable); |
9f125d30 | 203 | |
81bb0e19 | 204 | #ifdef CONFIG_NUMA |
63692df1 PB |
205 | static ssize_t numa_node_store(struct device *dev, |
206 | struct device_attribute *attr, const char *buf, | |
207 | size_t count) | |
208 | { | |
209 | struct pci_dev *pdev = to_pci_dev(dev); | |
210 | int node, ret; | |
211 | ||
212 | if (!capable(CAP_SYS_ADMIN)) | |
213 | return -EPERM; | |
214 | ||
215 | ret = kstrtoint(buf, 0, &node); | |
216 | if (ret) | |
217 | return ret; | |
218 | ||
219 | if (!node_online(node)) | |
220 | return -EINVAL; | |
221 | ||
222 | add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK); | |
223 | dev_alert(&pdev->dev, FW_BUG "Overriding NUMA node to %d. Contact your vendor for updates.", | |
224 | node); | |
225 | ||
226 | dev->numa_node = node; | |
227 | return count; | |
228 | } | |
229 | ||
3c78bc61 RD |
230 | static ssize_t numa_node_show(struct device *dev, struct device_attribute *attr, |
231 | char *buf) | |
81bb0e19 | 232 | { |
3c78bc61 | 233 | return sprintf(buf, "%d\n", dev->numa_node); |
81bb0e19 | 234 | } |
63692df1 | 235 | static DEVICE_ATTR_RW(numa_node); |
81bb0e19 BG |
236 | #endif |
237 | ||
3c78bc61 RD |
238 | static ssize_t dma_mask_bits_show(struct device *dev, |
239 | struct device_attribute *attr, char *buf) | |
bb965401 YL |
240 | { |
241 | struct pci_dev *pdev = to_pci_dev(dev); | |
242 | ||
3c78bc61 | 243 | return sprintf(buf, "%d\n", fls64(pdev->dma_mask)); |
bb965401 | 244 | } |
5136b2da | 245 | static DEVICE_ATTR_RO(dma_mask_bits); |
bb965401 | 246 | |
3c78bc61 RD |
247 | static ssize_t consistent_dma_mask_bits_show(struct device *dev, |
248 | struct device_attribute *attr, | |
249 | char *buf) | |
bb965401 | 250 | { |
3c78bc61 | 251 | return sprintf(buf, "%d\n", fls64(dev->coherent_dma_mask)); |
bb965401 | 252 | } |
5136b2da | 253 | static DEVICE_ATTR_RO(consistent_dma_mask_bits); |
bb965401 | 254 | |
3c78bc61 RD |
255 | static ssize_t msi_bus_show(struct device *dev, struct device_attribute *attr, |
256 | char *buf) | |
fe97064c BG |
257 | { |
258 | struct pci_dev *pdev = to_pci_dev(dev); | |
468ff15a | 259 | struct pci_bus *subordinate = pdev->subordinate; |
fe97064c | 260 | |
468ff15a YW |
261 | return sprintf(buf, "%u\n", subordinate ? |
262 | !(subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI) | |
263 | : !pdev->no_msi); | |
fe97064c BG |
264 | } |
265 | ||
3c78bc61 RD |
266 | static ssize_t msi_bus_store(struct device *dev, struct device_attribute *attr, |
267 | const char *buf, size_t count) | |
fe97064c BG |
268 | { |
269 | struct pci_dev *pdev = to_pci_dev(dev); | |
468ff15a | 270 | struct pci_bus *subordinate = pdev->subordinate; |
92425a40 TP |
271 | unsigned long val; |
272 | ||
9a994e8e | 273 | if (kstrtoul(buf, 0, &val) < 0) |
92425a40 | 274 | return -EINVAL; |
fe97064c | 275 | |
fe97064c | 276 | if (!capable(CAP_SYS_ADMIN)) |
92425a40 | 277 | return -EPERM; |
fe97064c | 278 | |
f7625980 | 279 | /* |
468ff15a YW |
280 | * "no_msi" and "bus_flags" only affect what happens when a driver |
281 | * requests MSI or MSI-X. They don't affect any drivers that have | |
282 | * already requested MSI or MSI-X. | |
f7625980 | 283 | */ |
468ff15a YW |
284 | if (!subordinate) { |
285 | pdev->no_msi = !val; | |
286 | dev_info(&pdev->dev, "MSI/MSI-X %s for future drivers\n", | |
287 | val ? "allowed" : "disallowed"); | |
fe97064c | 288 | return count; |
fe97064c BG |
289 | } |
290 | ||
468ff15a YW |
291 | if (val) |
292 | subordinate->bus_flags &= ~PCI_BUS_FLAGS_NO_MSI; | |
293 | else | |
294 | subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; | |
295 | ||
296 | dev_info(&subordinate->dev, "MSI/MSI-X %s for future drivers of devices on this bus\n", | |
297 | val ? "allowed" : "disallowed"); | |
fe97064c BG |
298 | return count; |
299 | } | |
5136b2da | 300 | static DEVICE_ATTR_RW(msi_bus); |
9888549e | 301 | |
705b1aaa AC |
302 | static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf, |
303 | size_t count) | |
304 | { | |
305 | unsigned long val; | |
306 | struct pci_bus *b = NULL; | |
307 | ||
9a994e8e | 308 | if (kstrtoul(buf, 0, &val) < 0) |
705b1aaa AC |
309 | return -EINVAL; |
310 | ||
311 | if (val) { | |
9d16947b | 312 | pci_lock_rescan_remove(); |
705b1aaa AC |
313 | while ((b = pci_find_next_bus(b)) != NULL) |
314 | pci_rescan_bus(b); | |
9d16947b | 315 | pci_unlock_rescan_remove(); |
705b1aaa AC |
316 | } |
317 | return count; | |
318 | } | |
0f49ba55 | 319 | static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store); |
705b1aaa | 320 | |
bf22c90f | 321 | static struct attribute *pci_bus_attrs[] = { |
0f49ba55 GKH |
322 | &bus_attr_rescan.attr, |
323 | NULL, | |
324 | }; | |
325 | ||
326 | static const struct attribute_group pci_bus_group = { | |
327 | .attrs = pci_bus_attrs, | |
328 | }; | |
329 | ||
330 | const struct attribute_group *pci_bus_groups[] = { | |
331 | &pci_bus_group, | |
332 | NULL, | |
705b1aaa | 333 | }; |
77c27c7b | 334 | |
3c78bc61 RD |
335 | static ssize_t dev_rescan_store(struct device *dev, |
336 | struct device_attribute *attr, const char *buf, | |
337 | size_t count) | |
738a6396 AC |
338 | { |
339 | unsigned long val; | |
340 | struct pci_dev *pdev = to_pci_dev(dev); | |
341 | ||
9a994e8e | 342 | if (kstrtoul(buf, 0, &val) < 0) |
738a6396 AC |
343 | return -EINVAL; |
344 | ||
345 | if (val) { | |
9d16947b | 346 | pci_lock_rescan_remove(); |
738a6396 | 347 | pci_rescan_bus(pdev->bus); |
9d16947b | 348 | pci_unlock_rescan_remove(); |
738a6396 AC |
349 | } |
350 | return count; | |
351 | } | |
bf22c90f SK |
352 | static struct device_attribute dev_rescan_attr = __ATTR(rescan, |
353 | (S_IWUSR|S_IWGRP), | |
354 | NULL, dev_rescan_store); | |
738a6396 | 355 | |
3c78bc61 RD |
356 | static ssize_t remove_store(struct device *dev, struct device_attribute *attr, |
357 | const char *buf, size_t count) | |
77c27c7b | 358 | { |
77c27c7b | 359 | unsigned long val; |
77c27c7b | 360 | |
9a994e8e | 361 | if (kstrtoul(buf, 0, &val) < 0) |
77c27c7b AC |
362 | return -EINVAL; |
363 | ||
bc6caf02 TH |
364 | if (val && device_remove_file_self(dev, attr)) |
365 | pci_stop_and_remove_bus_device_locked(to_pci_dev(dev)); | |
77c27c7b AC |
366 | return count; |
367 | } | |
bf22c90f SK |
368 | static struct device_attribute dev_remove_attr = __ATTR(remove, |
369 | (S_IWUSR|S_IWGRP), | |
370 | NULL, remove_store); | |
b9d320fc | 371 | |
3c78bc61 RD |
372 | static ssize_t dev_bus_rescan_store(struct device *dev, |
373 | struct device_attribute *attr, | |
374 | const char *buf, size_t count) | |
b9d320fc YL |
375 | { |
376 | unsigned long val; | |
377 | struct pci_bus *bus = to_pci_bus(dev); | |
378 | ||
9a994e8e | 379 | if (kstrtoul(buf, 0, &val) < 0) |
b9d320fc YL |
380 | return -EINVAL; |
381 | ||
382 | if (val) { | |
9d16947b | 383 | pci_lock_rescan_remove(); |
2f320521 YL |
384 | if (!pci_is_root_bus(bus) && list_empty(&bus->devices)) |
385 | pci_rescan_bus_bridge_resize(bus->self); | |
386 | else | |
387 | pci_rescan_bus(bus); | |
9d16947b | 388 | pci_unlock_rescan_remove(); |
b9d320fc YL |
389 | } |
390 | return count; | |
391 | } | |
56039e65 | 392 | static DEVICE_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store); |
b9d320fc | 393 | |
fbb988be | 394 | #if defined(CONFIG_PM) && defined(CONFIG_ACPI) |
448bd857 HY |
395 | static ssize_t d3cold_allowed_store(struct device *dev, |
396 | struct device_attribute *attr, | |
397 | const char *buf, size_t count) | |
398 | { | |
399 | struct pci_dev *pdev = to_pci_dev(dev); | |
400 | unsigned long val; | |
401 | ||
9a994e8e | 402 | if (kstrtoul(buf, 0, &val) < 0) |
448bd857 HY |
403 | return -EINVAL; |
404 | ||
405 | pdev->d3cold_allowed = !!val; | |
406 | pm_runtime_resume(dev); | |
407 | ||
408 | return count; | |
409 | } | |
410 | ||
411 | static ssize_t d3cold_allowed_show(struct device *dev, | |
412 | struct device_attribute *attr, char *buf) | |
413 | { | |
414 | struct pci_dev *pdev = to_pci_dev(dev); | |
3c78bc61 | 415 | return sprintf(buf, "%u\n", pdev->d3cold_allowed); |
448bd857 | 416 | } |
5136b2da | 417 | static DEVICE_ATTR_RW(d3cold_allowed); |
448bd857 HY |
418 | #endif |
419 | ||
dfc73e7a SO |
420 | #ifdef CONFIG_OF |
421 | static ssize_t devspec_show(struct device *dev, | |
422 | struct device_attribute *attr, char *buf) | |
423 | { | |
424 | struct pci_dev *pdev = to_pci_dev(dev); | |
425 | struct device_node *np = pci_device_to_OF_node(pdev); | |
426 | ||
427 | if (np == NULL || np->full_name == NULL) | |
428 | return 0; | |
429 | return sprintf(buf, "%s", np->full_name); | |
430 | } | |
431 | static DEVICE_ATTR_RO(devspec); | |
432 | #endif | |
433 | ||
1789382a DD |
434 | #ifdef CONFIG_PCI_IOV |
435 | static ssize_t sriov_totalvfs_show(struct device *dev, | |
436 | struct device_attribute *attr, | |
437 | char *buf) | |
438 | { | |
439 | struct pci_dev *pdev = to_pci_dev(dev); | |
440 | ||
bff73156 | 441 | return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); |
1789382a DD |
442 | } |
443 | ||
444 | ||
445 | static ssize_t sriov_numvfs_show(struct device *dev, | |
446 | struct device_attribute *attr, | |
447 | char *buf) | |
448 | { | |
449 | struct pci_dev *pdev = to_pci_dev(dev); | |
450 | ||
6b136724 | 451 | return sprintf(buf, "%u\n", pdev->sriov->num_VFs); |
1789382a DD |
452 | } |
453 | ||
454 | /* | |
faa48a50 BH |
455 | * num_vfs > 0; number of VFs to enable |
456 | * num_vfs = 0; disable all VFs | |
1789382a DD |
457 | * |
458 | * Note: SRIOV spec doesn't allow partial VF | |
faa48a50 | 459 | * disable, so it's all or none. |
1789382a DD |
460 | */ |
461 | static ssize_t sriov_numvfs_store(struct device *dev, | |
462 | struct device_attribute *attr, | |
463 | const char *buf, size_t count) | |
464 | { | |
465 | struct pci_dev *pdev = to_pci_dev(dev); | |
faa48a50 BH |
466 | int ret; |
467 | u16 num_vfs; | |
1789382a | 468 | |
faa48a50 BH |
469 | ret = kstrtou16(buf, 0, &num_vfs); |
470 | if (ret < 0) | |
471 | return ret; | |
472 | ||
473 | if (num_vfs > pci_sriov_get_totalvfs(pdev)) | |
474 | return -ERANGE; | |
475 | ||
476 | if (num_vfs == pdev->sriov->num_VFs) | |
477 | return count; /* no change */ | |
1789382a DD |
478 | |
479 | /* is PF driver loaded w/callback */ | |
480 | if (!pdev->driver || !pdev->driver->sriov_configure) { | |
faa48a50 | 481 | dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n"); |
1789382a DD |
482 | return -ENOSYS; |
483 | } | |
484 | ||
faa48a50 BH |
485 | if (num_vfs == 0) { |
486 | /* disable VFs */ | |
487 | ret = pdev->driver->sriov_configure(pdev, 0); | |
488 | if (ret < 0) | |
489 | return ret; | |
490 | return count; | |
1789382a DD |
491 | } |
492 | ||
faa48a50 BH |
493 | /* enable VFs */ |
494 | if (pdev->sriov->num_VFs) { | |
495 | dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n", | |
496 | pdev->sriov->num_VFs, num_vfs); | |
497 | return -EBUSY; | |
1789382a DD |
498 | } |
499 | ||
faa48a50 BH |
500 | ret = pdev->driver->sriov_configure(pdev, num_vfs); |
501 | if (ret < 0) | |
502 | return ret; | |
1789382a | 503 | |
faa48a50 BH |
504 | if (ret != num_vfs) |
505 | dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n", | |
506 | num_vfs, ret); | |
507 | ||
508 | return count; | |
1789382a DD |
509 | } |
510 | ||
511 | static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); | |
512 | static struct device_attribute sriov_numvfs_attr = | |
513 | __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), | |
514 | sriov_numvfs_show, sriov_numvfs_store); | |
515 | #endif /* CONFIG_PCI_IOV */ | |
516 | ||
782a985d AW |
517 | static ssize_t driver_override_store(struct device *dev, |
518 | struct device_attribute *attr, | |
519 | const char *buf, size_t count) | |
520 | { | |
521 | struct pci_dev *pdev = to_pci_dev(dev); | |
522 | char *driver_override, *old = pdev->driver_override, *cp; | |
523 | ||
524 | if (count > PATH_MAX) | |
525 | return -EINVAL; | |
526 | ||
527 | driver_override = kstrndup(buf, count, GFP_KERNEL); | |
528 | if (!driver_override) | |
529 | return -ENOMEM; | |
530 | ||
531 | cp = strchr(driver_override, '\n'); | |
532 | if (cp) | |
533 | *cp = '\0'; | |
534 | ||
535 | if (strlen(driver_override)) { | |
536 | pdev->driver_override = driver_override; | |
537 | } else { | |
538 | kfree(driver_override); | |
539 | pdev->driver_override = NULL; | |
540 | } | |
541 | ||
542 | kfree(old); | |
543 | ||
544 | return count; | |
545 | } | |
546 | ||
547 | static ssize_t driver_override_show(struct device *dev, | |
548 | struct device_attribute *attr, char *buf) | |
549 | { | |
550 | struct pci_dev *pdev = to_pci_dev(dev); | |
551 | ||
552 | return sprintf(buf, "%s\n", pdev->driver_override); | |
553 | } | |
554 | static DEVICE_ATTR_RW(driver_override); | |
555 | ||
bf22c90f | 556 | static struct attribute *pci_dev_attrs[] = { |
5136b2da GKH |
557 | &dev_attr_resource.attr, |
558 | &dev_attr_vendor.attr, | |
559 | &dev_attr_device.attr, | |
560 | &dev_attr_subsystem_vendor.attr, | |
561 | &dev_attr_subsystem_device.attr, | |
562 | &dev_attr_class.attr, | |
563 | &dev_attr_irq.attr, | |
564 | &dev_attr_local_cpus.attr, | |
565 | &dev_attr_local_cpulist.attr, | |
566 | &dev_attr_modalias.attr, | |
81bb0e19 | 567 | #ifdef CONFIG_NUMA |
5136b2da | 568 | &dev_attr_numa_node.attr, |
81bb0e19 | 569 | #endif |
5136b2da GKH |
570 | &dev_attr_dma_mask_bits.attr, |
571 | &dev_attr_consistent_dma_mask_bits.attr, | |
d8e7d53a | 572 | &dev_attr_enable.attr, |
5136b2da GKH |
573 | &dev_attr_broken_parity_status.attr, |
574 | &dev_attr_msi_bus.attr, | |
fbb988be | 575 | #if defined(CONFIG_PM) && defined(CONFIG_ACPI) |
5136b2da | 576 | &dev_attr_d3cold_allowed.attr, |
dfc73e7a SO |
577 | #endif |
578 | #ifdef CONFIG_OF | |
579 | &dev_attr_devspec.attr, | |
77c27c7b | 580 | #endif |
782a985d | 581 | &dev_attr_driver_override.attr, |
5136b2da GKH |
582 | NULL, |
583 | }; | |
584 | ||
585 | static const struct attribute_group pci_dev_group = { | |
586 | .attrs = pci_dev_attrs, | |
587 | }; | |
588 | ||
589 | const struct attribute_group *pci_dev_groups[] = { | |
590 | &pci_dev_group, | |
591 | NULL, | |
1da177e4 LT |
592 | }; |
593 | ||
56039e65 GKH |
594 | static struct attribute *pcibus_attrs[] = { |
595 | &dev_attr_rescan.attr, | |
596 | &dev_attr_cpuaffinity.attr, | |
597 | &dev_attr_cpulistaffinity.attr, | |
598 | NULL, | |
599 | }; | |
600 | ||
601 | static const struct attribute_group pcibus_group = { | |
602 | .attrs = pcibus_attrs, | |
603 | }; | |
604 | ||
605 | const struct attribute_group *pcibus_groups[] = { | |
606 | &pcibus_group, | |
607 | NULL, | |
b9d320fc YL |
608 | }; |
609 | ||
3c78bc61 RD |
610 | static ssize_t boot_vga_show(struct device *dev, struct device_attribute *attr, |
611 | char *buf) | |
217f45de DA |
612 | { |
613 | struct pci_dev *pdev = to_pci_dev(dev); | |
1a39b310 MG |
614 | struct pci_dev *vga_dev = vga_default_device(); |
615 | ||
616 | if (vga_dev) | |
617 | return sprintf(buf, "%u\n", (pdev == vga_dev)); | |
217f45de DA |
618 | |
619 | return sprintf(buf, "%u\n", | |
620 | !!(pdev->resource[PCI_ROM_RESOURCE].flags & | |
621 | IORESOURCE_ROM_SHADOW)); | |
622 | } | |
bf22c90f | 623 | static struct device_attribute vga_attr = __ATTR_RO(boot_vga); |
217f45de | 624 | |
3c78bc61 RD |
625 | static ssize_t pci_read_config(struct file *filp, struct kobject *kobj, |
626 | struct bin_attribute *bin_attr, char *buf, | |
627 | loff_t off, size_t count) | |
1da177e4 | 628 | { |
3c78bc61 RD |
629 | struct pci_dev *dev = to_pci_dev(container_of(kobj, struct device, |
630 | kobj)); | |
1da177e4 LT |
631 | unsigned int size = 64; |
632 | loff_t init_off = off; | |
3c78bc61 | 633 | u8 *data = (u8 *) buf; |
1da177e4 LT |
634 | |
635 | /* Several chips lock up trying to read undefined config space */ | |
3c78bc61 | 636 | if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0) |
1da177e4 | 637 | size = dev->cfg_size; |
3c78bc61 | 638 | else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) |
1da177e4 | 639 | size = 128; |
1da177e4 LT |
640 | |
641 | if (off > size) | |
642 | return 0; | |
643 | if (off + count > size) { | |
644 | size -= off; | |
645 | count = size; | |
646 | } else { | |
647 | size = count; | |
648 | } | |
649 | ||
3d8387ef HY |
650 | pci_config_pm_runtime_get(dev); |
651 | ||
4c0619ad | 652 | if ((off & 1) && size) { |
653 | u8 val; | |
e04b0ea2 | 654 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 655 | data[off - init_off] = val; |
1da177e4 | 656 | off++; |
4c0619ad | 657 | size--; |
658 | } | |
659 | ||
660 | if ((off & 3) && size > 2) { | |
661 | u16 val; | |
e04b0ea2 | 662 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 663 | data[off - init_off] = val & 0xff; |
664 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
665 | off += 2; | |
666 | size -= 2; | |
1da177e4 LT |
667 | } |
668 | ||
669 | while (size > 3) { | |
4c0619ad | 670 | u32 val; |
e04b0ea2 | 671 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad | 672 | data[off - init_off] = val & 0xff; |
673 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
674 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
675 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
676 | off += 4; |
677 | size -= 4; | |
678 | } | |
679 | ||
4c0619ad | 680 | if (size >= 2) { |
681 | u16 val; | |
e04b0ea2 | 682 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 683 | data[off - init_off] = val & 0xff; |
684 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
685 | off += 2; | |
686 | size -= 2; | |
687 | } | |
688 | ||
689 | if (size > 0) { | |
690 | u8 val; | |
e04b0ea2 | 691 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 692 | data[off - init_off] = val; |
1da177e4 LT |
693 | off++; |
694 | --size; | |
695 | } | |
696 | ||
3d8387ef HY |
697 | pci_config_pm_runtime_put(dev); |
698 | ||
1da177e4 LT |
699 | return count; |
700 | } | |
701 | ||
3c78bc61 RD |
702 | static ssize_t pci_write_config(struct file *filp, struct kobject *kobj, |
703 | struct bin_attribute *bin_attr, char *buf, | |
704 | loff_t off, size_t count) | |
1da177e4 | 705 | { |
3c78bc61 RD |
706 | struct pci_dev *dev = to_pci_dev(container_of(kobj, struct device, |
707 | kobj)); | |
1da177e4 LT |
708 | unsigned int size = count; |
709 | loff_t init_off = off; | |
3c78bc61 | 710 | u8 *data = (u8 *) buf; |
1da177e4 LT |
711 | |
712 | if (off > dev->cfg_size) | |
713 | return 0; | |
714 | if (off + count > dev->cfg_size) { | |
715 | size = dev->cfg_size - off; | |
716 | count = size; | |
717 | } | |
f7625980 | 718 | |
3d8387ef HY |
719 | pci_config_pm_runtime_get(dev); |
720 | ||
4c0619ad | 721 | if ((off & 1) && size) { |
e04b0ea2 | 722 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 723 | off++; |
4c0619ad | 724 | size--; |
1da177e4 | 725 | } |
f7625980 | 726 | |
4c0619ad | 727 | if ((off & 3) && size > 2) { |
728 | u16 val = data[off - init_off]; | |
729 | val |= (u16) data[off - init_off + 1] << 8; | |
3c78bc61 RD |
730 | pci_user_write_config_word(dev, off, val); |
731 | off += 2; | |
732 | size -= 2; | |
733 | } | |
1da177e4 LT |
734 | |
735 | while (size > 3) { | |
4c0619ad | 736 | u32 val = data[off - init_off]; |
737 | val |= (u32) data[off - init_off + 1] << 8; | |
738 | val |= (u32) data[off - init_off + 2] << 16; | |
739 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 740 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
741 | off += 4; |
742 | size -= 4; | |
743 | } | |
f7625980 | 744 | |
4c0619ad | 745 | if (size >= 2) { |
746 | u16 val = data[off - init_off]; | |
747 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 748 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 749 | off += 2; |
750 | size -= 2; | |
751 | } | |
1da177e4 | 752 | |
4c0619ad | 753 | if (size) { |
e04b0ea2 | 754 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
755 | off++; |
756 | --size; | |
757 | } | |
758 | ||
3d8387ef HY |
759 | pci_config_pm_runtime_put(dev); |
760 | ||
1da177e4 LT |
761 | return count; |
762 | } | |
763 | ||
3c78bc61 RD |
764 | static ssize_t read_vpd_attr(struct file *filp, struct kobject *kobj, |
765 | struct bin_attribute *bin_attr, char *buf, | |
766 | loff_t off, size_t count) | |
94e61088 BH |
767 | { |
768 | struct pci_dev *dev = | |
769 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
770 | |
771 | if (off > bin_attr->size) | |
772 | count = 0; | |
773 | else if (count > bin_attr->size - off) | |
774 | count = bin_attr->size - off; | |
94e61088 | 775 | |
287d19ce | 776 | return pci_read_vpd(dev, off, count, buf); |
94e61088 BH |
777 | } |
778 | ||
3c78bc61 RD |
779 | static ssize_t write_vpd_attr(struct file *filp, struct kobject *kobj, |
780 | struct bin_attribute *bin_attr, char *buf, | |
781 | loff_t off, size_t count) | |
94e61088 BH |
782 | { |
783 | struct pci_dev *dev = | |
784 | to_pci_dev(container_of(kobj, struct device, kobj)); | |
94e61088 BH |
785 | |
786 | if (off > bin_attr->size) | |
787 | count = 0; | |
788 | else if (count > bin_attr->size - off) | |
789 | count = bin_attr->size - off; | |
94e61088 | 790 | |
287d19ce | 791 | return pci_write_vpd(dev, off, count, buf); |
94e61088 BH |
792 | } |
793 | ||
1da177e4 LT |
794 | #ifdef HAVE_PCI_LEGACY |
795 | /** | |
796 | * pci_read_legacy_io - read byte(s) from legacy I/O port space | |
2c3c8bea | 797 | * @filp: open sysfs file |
1da177e4 | 798 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 799 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
800 | * @buf: buffer to store results |
801 | * @off: offset into legacy I/O port space | |
802 | * @count: number of bytes to read | |
803 | * | |
804 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
805 | * callback routine (pci_legacy_read). | |
806 | */ | |
3c78bc61 RD |
807 | static ssize_t pci_read_legacy_io(struct file *filp, struct kobject *kobj, |
808 | struct bin_attribute *bin_attr, char *buf, | |
809 | loff_t off, size_t count) | |
1da177e4 | 810 | { |
3c78bc61 | 811 | struct pci_bus *bus = to_pci_bus(container_of(kobj, struct device, |
1da177e4 LT |
812 | kobj)); |
813 | ||
3c78bc61 RD |
814 | /* Only support 1, 2 or 4 byte accesses */ |
815 | if (count != 1 && count != 2 && count != 4) | |
816 | return -EINVAL; | |
1da177e4 | 817 | |
3c78bc61 | 818 | return pci_legacy_read(bus, off, (u32 *)buf, count); |
1da177e4 LT |
819 | } |
820 | ||
821 | /** | |
822 | * pci_write_legacy_io - write byte(s) to legacy I/O port space | |
2c3c8bea | 823 | * @filp: open sysfs file |
1da177e4 | 824 | * @kobj: kobject corresponding to file to read from |
cffb2faf | 825 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
826 | * @buf: buffer containing value to be written |
827 | * @off: offset into legacy I/O port space | |
828 | * @count: number of bytes to write | |
829 | * | |
830 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
831 | * callback routine (pci_legacy_write). | |
832 | */ | |
3c78bc61 RD |
833 | static ssize_t pci_write_legacy_io(struct file *filp, struct kobject *kobj, |
834 | struct bin_attribute *bin_attr, char *buf, | |
835 | loff_t off, size_t count) | |
1da177e4 | 836 | { |
3c78bc61 | 837 | struct pci_bus *bus = to_pci_bus(container_of(kobj, struct device, |
1da177e4 | 838 | kobj)); |
1da177e4 | 839 | |
3c78bc61 RD |
840 | /* Only support 1, 2 or 4 byte accesses */ |
841 | if (count != 1 && count != 2 && count != 4) | |
842 | return -EINVAL; | |
843 | ||
844 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
1da177e4 LT |
845 | } |
846 | ||
847 | /** | |
848 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
2c3c8bea | 849 | * @filp: open sysfs file |
1da177e4 LT |
850 | * @kobj: kobject corresponding to device to be mapped |
851 | * @attr: struct bin_attribute for this file | |
852 | * @vma: struct vm_area_struct passed to mmap | |
853 | * | |
f19aeb1f | 854 | * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap |
1da177e4 LT |
855 | * legacy memory space (first meg of bus space) into application virtual |
856 | * memory space. | |
857 | */ | |
3c78bc61 RD |
858 | static int pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, |
859 | struct bin_attribute *attr, | |
860 | struct vm_area_struct *vma) | |
1da177e4 | 861 | { |
3c78bc61 | 862 | struct pci_bus *bus = to_pci_bus(container_of(kobj, struct device, |
1da177e4 LT |
863 | kobj)); |
864 | ||
3c78bc61 | 865 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); |
f19aeb1f BH |
866 | } |
867 | ||
868 | /** | |
869 | * pci_mmap_legacy_io - map legacy PCI IO into user memory space | |
2c3c8bea | 870 | * @filp: open sysfs file |
f19aeb1f BH |
871 | * @kobj: kobject corresponding to device to be mapped |
872 | * @attr: struct bin_attribute for this file | |
873 | * @vma: struct vm_area_struct passed to mmap | |
874 | * | |
875 | * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap | |
876 | * legacy IO space (first meg of bus space) into application virtual | |
877 | * memory space. Returns -ENOSYS if the operation isn't supported | |
878 | */ | |
3c78bc61 RD |
879 | static int pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, |
880 | struct bin_attribute *attr, | |
881 | struct vm_area_struct *vma) | |
f19aeb1f | 882 | { |
3c78bc61 | 883 | struct pci_bus *bus = to_pci_bus(container_of(kobj, struct device, |
f19aeb1f BH |
884 | kobj)); |
885 | ||
3c78bc61 | 886 | return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); |
f19aeb1f BH |
887 | } |
888 | ||
10a0ef39 IK |
889 | /** |
890 | * pci_adjust_legacy_attr - adjustment of legacy file attributes | |
891 | * @b: bus to create files under | |
892 | * @mmap_type: I/O port or memory | |
893 | * | |
894 | * Stub implementation. Can be overridden by arch if necessary. | |
895 | */ | |
3c78bc61 RD |
896 | void __weak pci_adjust_legacy_attr(struct pci_bus *b, |
897 | enum pci_mmap_state mmap_type) | |
10a0ef39 | 898 | { |
10a0ef39 IK |
899 | } |
900 | ||
f19aeb1f BH |
901 | /** |
902 | * pci_create_legacy_files - create legacy I/O port and memory files | |
903 | * @b: bus to create files under | |
904 | * | |
905 | * Some platforms allow access to legacy I/O port and ISA memory space on | |
906 | * a per-bus basis. This routine creates the files and ties them into | |
907 | * their associated read, write and mmap files from pci-sysfs.c | |
908 | * | |
25985edc | 909 | * On error unwind, but don't propagate the error to the caller |
f19aeb1f BH |
910 | * as it is ok to set up the PCI bus without these files. |
911 | */ | |
912 | void pci_create_legacy_files(struct pci_bus *b) | |
913 | { | |
914 | int error; | |
915 | ||
916 | b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, | |
917 | GFP_ATOMIC); | |
918 | if (!b->legacy_io) | |
919 | goto kzalloc_err; | |
920 | ||
62e877b8 | 921 | sysfs_bin_attr_init(b->legacy_io); |
f19aeb1f BH |
922 | b->legacy_io->attr.name = "legacy_io"; |
923 | b->legacy_io->size = 0xffff; | |
924 | b->legacy_io->attr.mode = S_IRUSR | S_IWUSR; | |
925 | b->legacy_io->read = pci_read_legacy_io; | |
926 | b->legacy_io->write = pci_write_legacy_io; | |
927 | b->legacy_io->mmap = pci_mmap_legacy_io; | |
10a0ef39 | 928 | pci_adjust_legacy_attr(b, pci_mmap_io); |
f19aeb1f BH |
929 | error = device_create_bin_file(&b->dev, b->legacy_io); |
930 | if (error) | |
931 | goto legacy_io_err; | |
932 | ||
933 | /* Allocated above after the legacy_io struct */ | |
934 | b->legacy_mem = b->legacy_io + 1; | |
6757eca3 | 935 | sysfs_bin_attr_init(b->legacy_mem); |
f19aeb1f BH |
936 | b->legacy_mem->attr.name = "legacy_mem"; |
937 | b->legacy_mem->size = 1024*1024; | |
938 | b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR; | |
939 | b->legacy_mem->mmap = pci_mmap_legacy_mem; | |
10a0ef39 | 940 | pci_adjust_legacy_attr(b, pci_mmap_mem); |
f19aeb1f BH |
941 | error = device_create_bin_file(&b->dev, b->legacy_mem); |
942 | if (error) | |
943 | goto legacy_mem_err; | |
944 | ||
945 | return; | |
946 | ||
947 | legacy_mem_err: | |
948 | device_remove_bin_file(&b->dev, b->legacy_io); | |
949 | legacy_io_err: | |
950 | kfree(b->legacy_io); | |
951 | b->legacy_io = NULL; | |
952 | kzalloc_err: | |
227f0647 | 953 | printk(KERN_WARNING "pci: warning: could not create legacy I/O port and ISA memory resources to sysfs\n"); |
f19aeb1f BH |
954 | return; |
955 | } | |
956 | ||
957 | void pci_remove_legacy_files(struct pci_bus *b) | |
958 | { | |
959 | if (b->legacy_io) { | |
960 | device_remove_bin_file(&b->dev, b->legacy_io); | |
961 | device_remove_bin_file(&b->dev, b->legacy_mem); | |
962 | kfree(b->legacy_io); /* both are allocated here */ | |
963 | } | |
1da177e4 LT |
964 | } |
965 | #endif /* HAVE_PCI_LEGACY */ | |
966 | ||
967 | #ifdef HAVE_PCI_MMAP | |
b5ff7df3 | 968 | |
3b519e4e MW |
969 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, |
970 | enum pci_mmap_api mmap_api) | |
b5ff7df3 | 971 | { |
3b519e4e | 972 | unsigned long nr, start, size, pci_start; |
b5ff7df3 | 973 | |
3b519e4e MW |
974 | if (pci_resource_len(pdev, resno) == 0) |
975 | return 0; | |
64b00175 | 976 | nr = vma_pages(vma); |
b5ff7df3 | 977 | start = vma->vm_pgoff; |
88e7df0b | 978 | size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; |
8c05cd08 | 979 | pci_start = (mmap_api == PCI_MMAP_PROCFS) ? |
3b519e4e MW |
980 | pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; |
981 | if (start >= pci_start && start < pci_start + size && | |
982 | start + nr <= pci_start + size) | |
b5ff7df3 | 983 | return 1; |
b5ff7df3 LT |
984 | return 0; |
985 | } | |
986 | ||
1da177e4 LT |
987 | /** |
988 | * pci_mmap_resource - map a PCI resource into user memory space | |
989 | * @kobj: kobject for mapping | |
990 | * @attr: struct bin_attribute for the file being mapped | |
991 | * @vma: struct vm_area_struct passed into the mmap | |
45aec1ae | 992 | * @write_combine: 1 for write_combine mapping |
1da177e4 LT |
993 | * |
994 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
1da177e4 | 995 | */ |
3c78bc61 RD |
996 | static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, |
997 | struct vm_area_struct *vma, int write_combine) | |
1da177e4 LT |
998 | { |
999 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
1000 | struct device, kobj)); | |
a3f5835a | 1001 | struct resource *res = attr->private; |
1da177e4 | 1002 | enum pci_mmap_state mmap_type; |
e31dd6e4 | 1003 | resource_size_t start, end; |
2311b1f2 | 1004 | int i; |
1da177e4 | 1005 | |
2311b1f2 ME |
1006 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
1007 | if (res == &pdev->resource[i]) | |
1008 | break; | |
1009 | if (i >= PCI_ROM_RESOURCE) | |
1010 | return -ENODEV; | |
1011 | ||
3b519e4e | 1012 | if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { |
227f0647 | 1013 | 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 |
1014 | current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, |
1015 | pci_name(pdev), i, | |
e25cd062 RD |
1016 | (u64)pci_resource_start(pdev, i), |
1017 | (u64)pci_resource_len(pdev, i)); | |
b5ff7df3 | 1018 | return -EINVAL; |
3b519e4e | 1019 | } |
b5ff7df3 | 1020 | |
2311b1f2 ME |
1021 | /* pci_mmap_page_range() expects the same kind of entry as coming |
1022 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
1023 | * different from the resource itself, arch will do necessary fixup. | |
1024 | */ | |
1025 | pci_resource_to_user(pdev, i, res, &start, &end); | |
1026 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 LT |
1027 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
1028 | ||
e8de1481 AV |
1029 | if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start)) |
1030 | return -EINVAL; | |
1031 | ||
45aec1ae | 1032 | return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); |
1033 | } | |
1034 | ||
3c78bc61 RD |
1035 | static int pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, |
1036 | struct bin_attribute *attr, | |
1037 | struct vm_area_struct *vma) | |
45aec1ae | 1038 | { |
1039 | return pci_mmap_resource(kobj, attr, vma, 0); | |
1040 | } | |
1041 | ||
3c78bc61 RD |
1042 | static int pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, |
1043 | struct bin_attribute *attr, | |
1044 | struct vm_area_struct *vma) | |
45aec1ae | 1045 | { |
1046 | return pci_mmap_resource(kobj, attr, vma, 1); | |
1da177e4 LT |
1047 | } |
1048 | ||
3c78bc61 RD |
1049 | static ssize_t pci_resource_io(struct file *filp, struct kobject *kobj, |
1050 | struct bin_attribute *attr, char *buf, | |
1051 | loff_t off, size_t count, bool write) | |
8633328b AW |
1052 | { |
1053 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
1054 | struct device, kobj)); | |
1055 | struct resource *res = attr->private; | |
1056 | unsigned long port = off; | |
1057 | int i; | |
1058 | ||
1059 | for (i = 0; i < PCI_ROM_RESOURCE; i++) | |
1060 | if (res == &pdev->resource[i]) | |
1061 | break; | |
1062 | if (i >= PCI_ROM_RESOURCE) | |
1063 | return -ENODEV; | |
1064 | ||
1065 | port += pci_resource_start(pdev, i); | |
1066 | ||
1067 | if (port > pci_resource_end(pdev, i)) | |
1068 | return 0; | |
1069 | ||
1070 | if (port + count - 1 > pci_resource_end(pdev, i)) | |
1071 | return -EINVAL; | |
1072 | ||
1073 | switch (count) { | |
1074 | case 1: | |
1075 | if (write) | |
1076 | outb(*(u8 *)buf, port); | |
1077 | else | |
1078 | *(u8 *)buf = inb(port); | |
1079 | return 1; | |
1080 | case 2: | |
1081 | if (write) | |
1082 | outw(*(u16 *)buf, port); | |
1083 | else | |
1084 | *(u16 *)buf = inw(port); | |
1085 | return 2; | |
1086 | case 4: | |
1087 | if (write) | |
1088 | outl(*(u32 *)buf, port); | |
1089 | else | |
1090 | *(u32 *)buf = inl(port); | |
1091 | return 4; | |
1092 | } | |
1093 | return -EINVAL; | |
1094 | } | |
1095 | ||
3c78bc61 RD |
1096 | static ssize_t pci_read_resource_io(struct file *filp, struct kobject *kobj, |
1097 | struct bin_attribute *attr, char *buf, | |
1098 | loff_t off, size_t count) | |
8633328b AW |
1099 | { |
1100 | return pci_resource_io(filp, kobj, attr, buf, off, count, false); | |
1101 | } | |
1102 | ||
3c78bc61 RD |
1103 | static ssize_t pci_write_resource_io(struct file *filp, struct kobject *kobj, |
1104 | struct bin_attribute *attr, char *buf, | |
1105 | loff_t off, size_t count) | |
8633328b AW |
1106 | { |
1107 | return pci_resource_io(filp, kobj, attr, buf, off, count, true); | |
1108 | } | |
1109 | ||
b19441af GKH |
1110 | /** |
1111 | * pci_remove_resource_files - cleanup resource files | |
cffb2faf | 1112 | * @pdev: dev to cleanup |
b19441af | 1113 | * |
cffb2faf | 1114 | * If we created resource files for @pdev, remove them from sysfs and |
b19441af GKH |
1115 | * free their resources. |
1116 | */ | |
3c78bc61 | 1117 | static void pci_remove_resource_files(struct pci_dev *pdev) |
b19441af GKH |
1118 | { |
1119 | int i; | |
1120 | ||
1121 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1122 | struct bin_attribute *res_attr; | |
1123 | ||
1124 | res_attr = pdev->res_attr[i]; | |
1125 | if (res_attr) { | |
1126 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1127 | kfree(res_attr); | |
1128 | } | |
45aec1ae | 1129 | |
1130 | res_attr = pdev->res_attr_wc[i]; | |
1131 | if (res_attr) { | |
1132 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
1133 | kfree(res_attr); | |
1134 | } | |
b19441af GKH |
1135 | } |
1136 | } | |
1137 | ||
45aec1ae | 1138 | static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) |
1139 | { | |
1140 | /* allocate attribute structure, piggyback attribute name */ | |
1141 | int name_len = write_combine ? 13 : 10; | |
1142 | struct bin_attribute *res_attr; | |
1143 | int retval; | |
1144 | ||
1145 | res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); | |
1146 | if (res_attr) { | |
1147 | char *res_attr_name = (char *)(res_attr + 1); | |
1148 | ||
a07e4156 | 1149 | sysfs_bin_attr_init(res_attr); |
45aec1ae | 1150 | if (write_combine) { |
1151 | pdev->res_attr_wc[num] = res_attr; | |
1152 | sprintf(res_attr_name, "resource%d_wc", num); | |
1153 | res_attr->mmap = pci_mmap_resource_wc; | |
1154 | } else { | |
1155 | pdev->res_attr[num] = res_attr; | |
1156 | sprintf(res_attr_name, "resource%d", num); | |
1157 | res_attr->mmap = pci_mmap_resource_uc; | |
1158 | } | |
8633328b AW |
1159 | if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { |
1160 | res_attr->read = pci_read_resource_io; | |
1161 | res_attr->write = pci_write_resource_io; | |
1162 | } | |
45aec1ae | 1163 | res_attr->attr.name = res_attr_name; |
1164 | res_attr->attr.mode = S_IRUSR | S_IWUSR; | |
1165 | res_attr->size = pci_resource_len(pdev, num); | |
1166 | res_attr->private = &pdev->resource[num]; | |
1167 | retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
1168 | } else | |
1169 | retval = -ENOMEM; | |
1170 | ||
1171 | return retval; | |
1172 | } | |
1173 | ||
1da177e4 LT |
1174 | /** |
1175 | * pci_create_resource_files - create resource files in sysfs for @dev | |
cffb2faf | 1176 | * @pdev: dev in question |
1da177e4 | 1177 | * |
cffb2faf | 1178 | * Walk the resources in @pdev creating files for each resource available. |
1da177e4 | 1179 | */ |
b19441af | 1180 | static int pci_create_resource_files(struct pci_dev *pdev) |
1da177e4 LT |
1181 | { |
1182 | int i; | |
b19441af | 1183 | int retval; |
1da177e4 LT |
1184 | |
1185 | /* Expose the PCI resources from this device as files */ | |
1186 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
1da177e4 LT |
1187 | |
1188 | /* skip empty resources */ | |
1189 | if (!pci_resource_len(pdev, i)) | |
1190 | continue; | |
1191 | ||
45aec1ae | 1192 | retval = pci_create_attr(pdev, i, 0); |
1193 | /* for prefetchable resources, create a WC mappable file */ | |
1194 | if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) | |
1195 | retval = pci_create_attr(pdev, i, 1); | |
1196 | ||
1197 | if (retval) { | |
1198 | pci_remove_resource_files(pdev); | |
1199 | return retval; | |
1da177e4 LT |
1200 | } |
1201 | } | |
b19441af | 1202 | return 0; |
1da177e4 LT |
1203 | } |
1204 | #else /* !HAVE_PCI_MMAP */ | |
10a0ef39 IK |
1205 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } |
1206 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } | |
1da177e4 LT |
1207 | #endif /* HAVE_PCI_MMAP */ |
1208 | ||
1209 | /** | |
1210 | * pci_write_rom - used to enable access to the PCI ROM display | |
2c3c8bea | 1211 | * @filp: sysfs file |
1da177e4 | 1212 | * @kobj: kernel object handle |
cffb2faf | 1213 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1214 | * @buf: user input |
1215 | * @off: file offset | |
1216 | * @count: number of byte in input | |
1217 | * | |
1218 | * writing anything except 0 enables it | |
1219 | */ | |
3c78bc61 RD |
1220 | static ssize_t pci_write_rom(struct file *filp, struct kobject *kobj, |
1221 | struct bin_attribute *bin_attr, char *buf, | |
1222 | loff_t off, size_t count) | |
1da177e4 LT |
1223 | { |
1224 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1225 | ||
1226 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
1227 | pdev->rom_attr_enabled = 0; | |
1228 | else | |
1229 | pdev->rom_attr_enabled = 1; | |
1230 | ||
1231 | return count; | |
1232 | } | |
1233 | ||
1234 | /** | |
1235 | * pci_read_rom - read a PCI ROM | |
2c3c8bea | 1236 | * @filp: sysfs file |
1da177e4 | 1237 | * @kobj: kernel object handle |
cffb2faf | 1238 | * @bin_attr: struct bin_attribute for this file |
1da177e4 LT |
1239 | * @buf: where to put the data we read from the ROM |
1240 | * @off: file offset | |
1241 | * @count: number of bytes to read | |
1242 | * | |
1243 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
1244 | * device corresponding to @kobj. | |
1245 | */ | |
3c78bc61 RD |
1246 | static ssize_t pci_read_rom(struct file *filp, struct kobject *kobj, |
1247 | struct bin_attribute *bin_attr, char *buf, | |
1248 | loff_t off, size_t count) | |
1da177e4 LT |
1249 | { |
1250 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
1251 | void __iomem *rom; | |
1252 | size_t size; | |
1253 | ||
1254 | if (!pdev->rom_attr_enabled) | |
1255 | return -EINVAL; | |
f7625980 | 1256 | |
1da177e4 | 1257 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ |
97c44836 TN |
1258 | if (!rom || !size) |
1259 | return -EIO; | |
f7625980 | 1260 | |
1da177e4 LT |
1261 | if (off >= size) |
1262 | count = 0; | |
1263 | else { | |
1264 | if (off + count > size) | |
1265 | count = size - off; | |
f7625980 | 1266 | |
1da177e4 LT |
1267 | memcpy_fromio(buf, rom + off, count); |
1268 | } | |
1269 | pci_unmap_rom(pdev, rom); | |
f7625980 | 1270 | |
1da177e4 LT |
1271 | return count; |
1272 | } | |
1273 | ||
1274 | static struct bin_attribute pci_config_attr = { | |
1275 | .attr = { | |
1276 | .name = "config", | |
1277 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1278 | }, |
557848c3 | 1279 | .size = PCI_CFG_SPACE_SIZE, |
1da177e4 LT |
1280 | .read = pci_read_config, |
1281 | .write = pci_write_config, | |
1282 | }; | |
1283 | ||
1284 | static struct bin_attribute pcie_config_attr = { | |
1285 | .attr = { | |
1286 | .name = "config", | |
1287 | .mode = S_IRUGO | S_IWUSR, | |
1da177e4 | 1288 | }, |
557848c3 | 1289 | .size = PCI_CFG_SPACE_EXP_SIZE, |
1da177e4 LT |
1290 | .read = pci_read_config, |
1291 | .write = pci_write_config, | |
1292 | }; | |
1293 | ||
3c78bc61 RD |
1294 | static ssize_t reset_store(struct device *dev, struct device_attribute *attr, |
1295 | const char *buf, size_t count) | |
711d5779 MT |
1296 | { |
1297 | struct pci_dev *pdev = to_pci_dev(dev); | |
1298 | unsigned long val; | |
9a994e8e | 1299 | ssize_t result = kstrtoul(buf, 0, &val); |
711d5779 MT |
1300 | |
1301 | if (result < 0) | |
1302 | return result; | |
1303 | ||
1304 | if (val != 1) | |
1305 | return -EINVAL; | |
447c5dd7 MS |
1306 | |
1307 | result = pci_reset_function(pdev); | |
1308 | if (result < 0) | |
1309 | return result; | |
1310 | ||
1311 | return count; | |
711d5779 MT |
1312 | } |
1313 | ||
1314 | static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store); | |
1315 | ||
280c73d3 ZY |
1316 | static int pci_create_capabilities_sysfs(struct pci_dev *dev) |
1317 | { | |
1318 | int retval; | |
1319 | struct bin_attribute *attr; | |
1320 | ||
1321 | /* If the device has VPD, try to expose it in sysfs. */ | |
1322 | if (dev->vpd) { | |
1323 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); | |
1324 | if (!attr) | |
1325 | return -ENOMEM; | |
1326 | ||
a07e4156 | 1327 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1328 | attr->size = dev->vpd->len; |
1329 | attr->attr.name = "vpd"; | |
1330 | attr->attr.mode = S_IRUSR | S_IWUSR; | |
287d19ce SH |
1331 | attr->read = read_vpd_attr; |
1332 | attr->write = write_vpd_attr; | |
280c73d3 ZY |
1333 | retval = sysfs_create_bin_file(&dev->dev.kobj, attr); |
1334 | if (retval) { | |
0f12a4e2 | 1335 | kfree(attr); |
280c73d3 ZY |
1336 | return retval; |
1337 | } | |
1338 | dev->vpd->attr = attr; | |
1339 | } | |
1340 | ||
1341 | /* Active State Power Management */ | |
1342 | pcie_aspm_create_sysfs_dev_files(dev); | |
1343 | ||
711d5779 MT |
1344 | if (!pci_probe_reset_function(dev)) { |
1345 | retval = device_create_file(&dev->dev, &reset_attr); | |
1346 | if (retval) | |
1347 | goto error; | |
1348 | dev->reset_fn = 1; | |
1349 | } | |
280c73d3 | 1350 | return 0; |
711d5779 MT |
1351 | |
1352 | error: | |
1353 | pcie_aspm_remove_sysfs_dev_files(dev); | |
1354 | if (dev->vpd && dev->vpd->attr) { | |
1355 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1356 | kfree(dev->vpd->attr); | |
1357 | } | |
1358 | ||
1359 | return retval; | |
280c73d3 ZY |
1360 | } |
1361 | ||
3c78bc61 | 1362 | int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev) |
1da177e4 | 1363 | { |
b19441af | 1364 | int retval; |
280c73d3 ZY |
1365 | int rom_size = 0; |
1366 | struct bin_attribute *attr; | |
b19441af | 1367 | |
1da177e4 LT |
1368 | if (!sysfs_initialized) |
1369 | return -EACCES; | |
1370 | ||
557848c3 | 1371 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af | 1372 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1da177e4 | 1373 | else |
b19441af GKH |
1374 | retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); |
1375 | if (retval) | |
1376 | goto err; | |
1da177e4 | 1377 | |
b19441af GKH |
1378 | retval = pci_create_resource_files(pdev); |
1379 | if (retval) | |
280c73d3 ZY |
1380 | goto err_config_file; |
1381 | ||
1382 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) | |
1383 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1384 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1385 | rom_size = 0x20000; | |
1da177e4 LT |
1386 | |
1387 | /* If the device has a ROM, try to expose it in sysfs. */ | |
280c73d3 | 1388 | if (rom_size) { |
94e61088 | 1389 | attr = kzalloc(sizeof(*attr), GFP_ATOMIC); |
280c73d3 | 1390 | if (!attr) { |
b19441af | 1391 | retval = -ENOMEM; |
9890b12a | 1392 | goto err_resource_files; |
1da177e4 | 1393 | } |
a07e4156 | 1394 | sysfs_bin_attr_init(attr); |
280c73d3 ZY |
1395 | attr->size = rom_size; |
1396 | attr->attr.name = "rom"; | |
ff29530e | 1397 | attr->attr.mode = S_IRUSR | S_IWUSR; |
280c73d3 ZY |
1398 | attr->read = pci_read_rom; |
1399 | attr->write = pci_write_rom; | |
1400 | retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); | |
1401 | if (retval) { | |
1402 | kfree(attr); | |
1403 | goto err_resource_files; | |
1404 | } | |
1405 | pdev->rom_attr = attr; | |
1da177e4 | 1406 | } |
280c73d3 | 1407 | |
280c73d3 ZY |
1408 | /* add sysfs entries for various capabilities */ |
1409 | retval = pci_create_capabilities_sysfs(pdev); | |
1410 | if (retval) | |
625e1d59 | 1411 | goto err_rom_file; |
7d715a6c | 1412 | |
911e1c9b N |
1413 | pci_create_firmware_label_files(pdev); |
1414 | ||
1da177e4 | 1415 | return 0; |
b19441af | 1416 | |
a2cd52ca | 1417 | err_rom_file: |
280c73d3 | 1418 | if (rom_size) { |
94e61088 | 1419 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); |
280c73d3 ZY |
1420 | kfree(pdev->rom_attr); |
1421 | pdev->rom_attr = NULL; | |
1422 | } | |
9890b12a ME |
1423 | err_resource_files: |
1424 | pci_remove_resource_files(pdev); | |
94e61088 | 1425 | err_config_file: |
557848c3 | 1426 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
b19441af GKH |
1427 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1428 | else | |
1429 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1430 | err: | |
1431 | return retval; | |
1da177e4 LT |
1432 | } |
1433 | ||
280c73d3 ZY |
1434 | static void pci_remove_capabilities_sysfs(struct pci_dev *dev) |
1435 | { | |
1436 | if (dev->vpd && dev->vpd->attr) { | |
1437 | sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr); | |
1438 | kfree(dev->vpd->attr); | |
1439 | } | |
1440 | ||
1441 | pcie_aspm_remove_sysfs_dev_files(dev); | |
711d5779 MT |
1442 | if (dev->reset_fn) { |
1443 | device_remove_file(&dev->dev, &reset_attr); | |
1444 | dev->reset_fn = 0; | |
1445 | } | |
280c73d3 ZY |
1446 | } |
1447 | ||
1da177e4 LT |
1448 | /** |
1449 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
1450 | * @pdev: device whose entries we should free | |
1451 | * | |
1452 | * Cleanup when @pdev is removed from sysfs. | |
1453 | */ | |
1454 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
1455 | { | |
280c73d3 ZY |
1456 | int rom_size = 0; |
1457 | ||
d67afe5e DM |
1458 | if (!sysfs_initialized) |
1459 | return; | |
1460 | ||
280c73d3 | 1461 | pci_remove_capabilities_sysfs(pdev); |
7d715a6c | 1462 | |
557848c3 | 1463 | if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE) |
1da177e4 LT |
1464 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); |
1465 | else | |
1466 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
1467 | ||
1468 | pci_remove_resource_files(pdev); | |
1469 | ||
280c73d3 ZY |
1470 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) |
1471 | rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
1472 | else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW) | |
1473 | rom_size = 0x20000; | |
1474 | ||
1475 | if (rom_size && pdev->rom_attr) { | |
1476 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); | |
1477 | kfree(pdev->rom_attr); | |
1da177e4 | 1478 | } |
911e1c9b N |
1479 | |
1480 | pci_remove_firmware_label_files(pdev); | |
1481 | ||
1da177e4 LT |
1482 | } |
1483 | ||
1484 | static int __init pci_sysfs_init(void) | |
1485 | { | |
1486 | struct pci_dev *pdev = NULL; | |
b19441af GKH |
1487 | int retval; |
1488 | ||
1da177e4 | 1489 | sysfs_initialized = 1; |
b19441af GKH |
1490 | for_each_pci_dev(pdev) { |
1491 | retval = pci_create_sysfs_dev_files(pdev); | |
151fc5df JL |
1492 | if (retval) { |
1493 | pci_dev_put(pdev); | |
b19441af | 1494 | return retval; |
151fc5df | 1495 | } |
b19441af | 1496 | } |
1da177e4 LT |
1497 | |
1498 | return 0; | |
1499 | } | |
40ee9e9f | 1500 | late_initcall(pci_sysfs_init); |
4e15c46b YL |
1501 | |
1502 | static struct attribute *pci_dev_dev_attrs[] = { | |
625e1d59 | 1503 | &vga_attr.attr, |
4e15c46b YL |
1504 | NULL, |
1505 | }; | |
1506 | ||
1507 | static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1508 | struct attribute *a, int n) |
4e15c46b | 1509 | { |
625e1d59 YL |
1510 | struct device *dev = container_of(kobj, struct device, kobj); |
1511 | struct pci_dev *pdev = to_pci_dev(dev); | |
1512 | ||
1513 | if (a == &vga_attr.attr) | |
1514 | if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1515 | return 0; | |
1516 | ||
4e15c46b YL |
1517 | return a->mode; |
1518 | } | |
1519 | ||
dfab88be JL |
1520 | static struct attribute *pci_dev_hp_attrs[] = { |
1521 | &dev_remove_attr.attr, | |
1522 | &dev_rescan_attr.attr, | |
1523 | NULL, | |
1524 | }; | |
1525 | ||
1526 | static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1527 | struct attribute *a, int n) |
dfab88be JL |
1528 | { |
1529 | struct device *dev = container_of(kobj, struct device, kobj); | |
1530 | struct pci_dev *pdev = to_pci_dev(dev); | |
1531 | ||
1532 | if (pdev->is_virtfn) | |
1533 | return 0; | |
1534 | ||
1535 | return a->mode; | |
1536 | } | |
1537 | ||
1538 | static struct attribute_group pci_dev_hp_attr_group = { | |
1539 | .attrs = pci_dev_hp_attrs, | |
1540 | .is_visible = pci_dev_hp_attrs_are_visible, | |
1541 | }; | |
1542 | ||
1789382a DD |
1543 | #ifdef CONFIG_PCI_IOV |
1544 | static struct attribute *sriov_dev_attrs[] = { | |
1545 | &sriov_totalvfs_attr.attr, | |
1546 | &sriov_numvfs_attr.attr, | |
1547 | NULL, | |
1548 | }; | |
1549 | ||
1550 | static umode_t sriov_attrs_are_visible(struct kobject *kobj, | |
3c78bc61 | 1551 | struct attribute *a, int n) |
1789382a DD |
1552 | { |
1553 | struct device *dev = container_of(kobj, struct device, kobj); | |
1554 | ||
1555 | if (!dev_is_pf(dev)) | |
1556 | return 0; | |
1557 | ||
1558 | return a->mode; | |
1559 | } | |
1560 | ||
1561 | static struct attribute_group sriov_dev_attr_group = { | |
1562 | .attrs = sriov_dev_attrs, | |
1563 | .is_visible = sriov_attrs_are_visible, | |
1564 | }; | |
1565 | #endif /* CONFIG_PCI_IOV */ | |
1566 | ||
4e15c46b YL |
1567 | static struct attribute_group pci_dev_attr_group = { |
1568 | .attrs = pci_dev_dev_attrs, | |
1569 | .is_visible = pci_dev_attrs_are_visible, | |
1570 | }; | |
1571 | ||
1572 | static const struct attribute_group *pci_dev_attr_groups[] = { | |
1573 | &pci_dev_attr_group, | |
dfab88be | 1574 | &pci_dev_hp_attr_group, |
1789382a DD |
1575 | #ifdef CONFIG_PCI_IOV |
1576 | &sriov_dev_attr_group, | |
1577 | #endif | |
4e15c46b YL |
1578 | NULL, |
1579 | }; | |
1580 | ||
1581 | struct device_type pci_dev_type = { | |
1582 | .groups = pci_dev_attr_groups, | |
1583 | }; |