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18#include <linux/kernel.h>
19#include <linux/sched.h>
20#include <linux/pci.h>
21#include <linux/stat.h>
22#include <linux/export.h>
23#include <linux/topology.h>
24#include <linux/mm.h>
25#include <linux/fs.h>
26#include <linux/capability.h>
27#include <linux/security.h>
28#include <linux/pci-aspm.h>
29#include <linux/slab.h>
30#include <linux/vgaarb.h>
31#include <linux/pm_runtime.h>
32#include <linux/of.h>
33#include "pci.h"
34
35static int sysfs_initialized;
36
37
38#define pci_config_attr(field, format_string) \
39static ssize_t \
40field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
41{ \
42 struct pci_dev *pdev; \
43 \
44 pdev = to_pci_dev(dev); \
45 return sprintf(buf, format_string, pdev->field); \
46} \
47static DEVICE_ATTR_RO(field)
48
49pci_config_attr(vendor, "0x%04x\n");
50pci_config_attr(device, "0x%04x\n");
51pci_config_attr(subsystem_vendor, "0x%04x\n");
52pci_config_attr(subsystem_device, "0x%04x\n");
53pci_config_attr(revision, "0x%02x\n");
54pci_config_attr(class, "0x%06x\n");
55pci_config_attr(irq, "%u\n");
56
57static 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);
62 return sprintf(buf, "%u\n", pdev->broken_parity_status);
63}
64
65static 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);
70 unsigned long val;
71
72 if (kstrtoul(buf, 0, &val) < 0)
73 return -EINVAL;
74
75 pdev->broken_parity_status = !!val;
76
77 return count;
78}
79static DEVICE_ATTR_RW(broken_parity_status);
80
81static ssize_t pci_dev_show_local_cpu(struct device *dev, bool list,
82 struct device_attribute *attr, char *buf)
83{
84 const struct cpumask *mask;
85
86#ifdef CONFIG_NUMA
87 mask = (dev_to_node(dev) == -1) ? cpu_online_mask :
88 cpumask_of_node(dev_to_node(dev));
89#else
90 mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
91#endif
92 return cpumap_print_to_pagebuf(list, buf, mask);
93}
94
95static ssize_t local_cpus_show(struct device *dev,
96 struct device_attribute *attr, char *buf)
97{
98 return pci_dev_show_local_cpu(dev, false, attr, buf);
99}
100static DEVICE_ATTR_RO(local_cpus);
101
102static ssize_t local_cpulist_show(struct device *dev,
103 struct device_attribute *attr, char *buf)
104{
105 return pci_dev_show_local_cpu(dev, true, attr, buf);
106}
107static DEVICE_ATTR_RO(local_cpulist);
108
109
110
111
112static ssize_t cpuaffinity_show(struct device *dev,
113 struct device_attribute *attr, char *buf)
114{
115 const struct cpumask *cpumask = cpumask_of_pcibus(to_pci_bus(dev));
116
117 return cpumap_print_to_pagebuf(false, buf, cpumask);
118}
119static DEVICE_ATTR_RO(cpuaffinity);
120
121static ssize_t cpulistaffinity_show(struct device *dev,
122 struct device_attribute *attr, char *buf)
123{
124 const struct cpumask *cpumask = cpumask_of_pcibus(to_pci_bus(dev));
125
126 return cpumap_print_to_pagebuf(true, buf, cpumask);
127}
128static DEVICE_ATTR_RO(cpulistaffinity);
129
130
131static ssize_t resource_show(struct device *dev, struct device_attribute *attr,
132 char *buf)
133{
134 struct pci_dev *pci_dev = to_pci_dev(dev);
135 char *str = buf;
136 int i;
137 int max;
138 resource_size_t start, end;
139
140 if (pci_dev->subordinate)
141 max = DEVICE_COUNT_RESOURCE;
142 else
143 max = PCI_BRIDGE_RESOURCES;
144
145 for (i = 0; i < max; i++) {
146 struct resource *res = &pci_dev->resource[i];
147 pci_resource_to_user(pci_dev, i, res, &start, &end);
148 str += sprintf(str, "0x%016llx 0x%016llx 0x%016llx\n",
149 (unsigned long long)start,
150 (unsigned long long)end,
151 (unsigned long long)res->flags);
152 }
153 return (str - buf);
154}
155static DEVICE_ATTR_RO(resource);
156
157static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
158 char *buf)
159{
160 struct pci_dev *pci_dev = to_pci_dev(dev);
161
162 return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02X\n",
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}
168static DEVICE_ATTR_RO(modalias);
169
170static ssize_t enable_store(struct device *dev, struct device_attribute *attr,
171 const char *buf, size_t count)
172{
173 struct pci_dev *pdev = to_pci_dev(dev);
174 unsigned long val;
175 ssize_t result = kstrtoul(buf, 0, &val);
176
177 if (result < 0)
178 return result;
179
180
181 if (!capable(CAP_SYS_ADMIN))
182 return -EPERM;
183
184 if (!val) {
185 if (pci_is_enabled(pdev))
186 pci_disable_device(pdev);
187 else
188 result = -EIO;
189 } else
190 result = pci_enable_device(pdev);
191
192 return result < 0 ? result : count;
193}
194
195static ssize_t enable_show(struct device *dev, struct device_attribute *attr,
196 char *buf)
197{
198 struct pci_dev *pdev;
199
200 pdev = to_pci_dev(dev);
201 return sprintf(buf, "%u\n", atomic_read(&pdev->enable_cnt));
202}
203static DEVICE_ATTR_RW(enable);
204
205#ifdef CONFIG_NUMA
206static 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
220 if ((node < 0 && node != NUMA_NO_NODE) || node >= MAX_NUMNODES)
221 return -EINVAL;
222
223 if (node != NUMA_NO_NODE && !node_online(node))
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
234static ssize_t numa_node_show(struct device *dev, struct device_attribute *attr,
235 char *buf)
236{
237 return sprintf(buf, "%d\n", dev->numa_node);
238}
239static DEVICE_ATTR_RW(numa_node);
240#endif
241
242static ssize_t dma_mask_bits_show(struct device *dev,
243 struct device_attribute *attr, char *buf)
244{
245 struct pci_dev *pdev = to_pci_dev(dev);
246
247 return sprintf(buf, "%d\n", fls64(pdev->dma_mask));
248}
249static DEVICE_ATTR_RO(dma_mask_bits);
250
251static ssize_t consistent_dma_mask_bits_show(struct device *dev,
252 struct device_attribute *attr,
253 char *buf)
254{
255 return sprintf(buf, "%d\n", fls64(dev->coherent_dma_mask));
256}
257static DEVICE_ATTR_RO(consistent_dma_mask_bits);
258
259static ssize_t msi_bus_show(struct device *dev, struct device_attribute *attr,
260 char *buf)
261{
262 struct pci_dev *pdev = to_pci_dev(dev);
263 struct pci_bus *subordinate = pdev->subordinate;
264
265 return sprintf(buf, "%u\n", subordinate ?
266 !(subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI)
267 : !pdev->no_msi);
268}
269
270static ssize_t msi_bus_store(struct device *dev, struct device_attribute *attr,
271 const char *buf, size_t count)
272{
273 struct pci_dev *pdev = to_pci_dev(dev);
274 struct pci_bus *subordinate = pdev->subordinate;
275 unsigned long val;
276
277 if (kstrtoul(buf, 0, &val) < 0)
278 return -EINVAL;
279
280 if (!capable(CAP_SYS_ADMIN))
281 return -EPERM;
282
283
284
285
286
287
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");
292 return count;
293 }
294
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");
302 return count;
303}
304static DEVICE_ATTR_RW(msi_bus);
305
306static 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
312 if (kstrtoul(buf, 0, &val) < 0)
313 return -EINVAL;
314
315 if (val) {
316 pci_lock_rescan_remove();
317 while ((b = pci_find_next_bus(b)) != NULL)
318 pci_rescan_bus(b);
319 pci_unlock_rescan_remove();
320 }
321 return count;
322}
323static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store);
324
325static struct attribute *pci_bus_attrs[] = {
326 &bus_attr_rescan.attr,
327 NULL,
328};
329
330static const struct attribute_group pci_bus_group = {
331 .attrs = pci_bus_attrs,
332};
333
334const struct attribute_group *pci_bus_groups[] = {
335 &pci_bus_group,
336 NULL,
337};
338
339static ssize_t dev_rescan_store(struct device *dev,
340 struct device_attribute *attr, const char *buf,
341 size_t count)
342{
343 unsigned long val;
344 struct pci_dev *pdev = to_pci_dev(dev);
345
346 if (kstrtoul(buf, 0, &val) < 0)
347 return -EINVAL;
348
349 if (val) {
350 pci_lock_rescan_remove();
351 pci_rescan_bus(pdev->bus);
352 pci_unlock_rescan_remove();
353 }
354 return count;
355}
356static struct device_attribute dev_rescan_attr = __ATTR(rescan,
357 (S_IWUSR|S_IWGRP),
358 NULL, dev_rescan_store);
359
360static ssize_t remove_store(struct device *dev, struct device_attribute *attr,
361 const char *buf, size_t count)
362{
363 unsigned long val;
364
365 if (kstrtoul(buf, 0, &val) < 0)
366 return -EINVAL;
367
368 if (val && device_remove_file_self(dev, attr))
369 pci_stop_and_remove_bus_device_locked(to_pci_dev(dev));
370 return count;
371}
372static struct device_attribute dev_remove_attr = __ATTR(remove,
373 (S_IWUSR|S_IWGRP),
374 NULL, remove_store);
375
376static ssize_t dev_bus_rescan_store(struct device *dev,
377 struct device_attribute *attr,
378 const char *buf, size_t count)
379{
380 unsigned long val;
381 struct pci_bus *bus = to_pci_bus(dev);
382
383 if (kstrtoul(buf, 0, &val) < 0)
384 return -EINVAL;
385
386 if (val) {
387 pci_lock_rescan_remove();
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);
392 pci_unlock_rescan_remove();
393 }
394 return count;
395}
396static DEVICE_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store);
397
398#if defined(CONFIG_PM) && defined(CONFIG_ACPI)
399static 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
406 if (kstrtoul(buf, 0, &val) < 0)
407 return -EINVAL;
408
409 pdev->d3cold_allowed = !!val;
410 if (pdev->d3cold_allowed)
411 pci_d3cold_enable(pdev);
412 else
413 pci_d3cold_disable(pdev);
414
415 pm_runtime_resume(dev);
416
417 return count;
418}
419
420static 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);
424 return sprintf(buf, "%u\n", pdev->d3cold_allowed);
425}
426static DEVICE_ATTR_RW(d3cold_allowed);
427#endif
428
429#ifdef CONFIG_OF
430static 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}
440static DEVICE_ATTR_RO(devspec);
441#endif
442
443#ifdef CONFIG_PCI_IOV
444static 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
450 return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev));
451}
452
453
454static 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
460 return sprintf(buf, "%u\n", pdev->sriov->num_VFs);
461}
462
463
464
465
466
467
468
469
470static 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);
475 struct pci_sriov *iov = pdev->sriov;
476 int ret;
477 u16 num_vfs;
478
479 ret = kstrtou16(buf, 0, &num_vfs);
480 if (ret < 0)
481 return ret;
482
483 if (num_vfs > pci_sriov_get_totalvfs(pdev))
484 return -ERANGE;
485
486 mutex_lock(&iov->dev->sriov->lock);
487
488 if (num_vfs == pdev->sriov->num_VFs)
489 goto exit;
490
491
492 if (!pdev->driver || !pdev->driver->sriov_configure) {
493 dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n");
494 ret = -ENOENT;
495 goto exit;
496 }
497
498 if (num_vfs == 0) {
499
500 ret = pdev->driver->sriov_configure(pdev, 0);
501 goto exit;
502 }
503
504
505 if (pdev->sriov->num_VFs) {
506 dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n",
507 pdev->sriov->num_VFs, num_vfs);
508 ret = -EBUSY;
509 goto exit;
510 }
511
512 ret = pdev->driver->sriov_configure(pdev, num_vfs);
513 if (ret < 0)
514 goto exit;
515
516 if (ret != num_vfs)
517 dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n",
518 num_vfs, ret);
519
520exit:
521 mutex_unlock(&iov->dev->sriov->lock);
522
523 if (ret < 0)
524 return ret;
525
526 return count;
527}
528
529static ssize_t sriov_drivers_autoprobe_show(struct device *dev,
530 struct device_attribute *attr,
531 char *buf)
532{
533 struct pci_dev *pdev = to_pci_dev(dev);
534
535 return sprintf(buf, "%u\n", pdev->sriov->drivers_autoprobe);
536}
537
538static ssize_t sriov_drivers_autoprobe_store(struct device *dev,
539 struct device_attribute *attr,
540 const char *buf, size_t count)
541{
542 struct pci_dev *pdev = to_pci_dev(dev);
543 bool drivers_autoprobe;
544
545 if (kstrtobool(buf, &drivers_autoprobe) < 0)
546 return -EINVAL;
547
548 pdev->sriov->drivers_autoprobe = drivers_autoprobe;
549
550 return count;
551}
552
553static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs);
554static struct device_attribute sriov_numvfs_attr =
555 __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP),
556 sriov_numvfs_show, sriov_numvfs_store);
557static struct device_attribute sriov_drivers_autoprobe_attr =
558 __ATTR(sriov_drivers_autoprobe, (S_IRUGO|S_IWUSR|S_IWGRP),
559 sriov_drivers_autoprobe_show, sriov_drivers_autoprobe_store);
560#endif
561
562static ssize_t driver_override_store(struct device *dev,
563 struct device_attribute *attr,
564 const char *buf, size_t count)
565{
566 struct pci_dev *pdev = to_pci_dev(dev);
567 char *driver_override, *old = pdev->driver_override, *cp;
568
569
570 if (count >= (PAGE_SIZE - 1))
571 return -EINVAL;
572
573 driver_override = kstrndup(buf, count, GFP_KERNEL);
574 if (!driver_override)
575 return -ENOMEM;
576
577 cp = strchr(driver_override, '\n');
578 if (cp)
579 *cp = '\0';
580
581 if (strlen(driver_override)) {
582 pdev->driver_override = driver_override;
583 } else {
584 kfree(driver_override);
585 pdev->driver_override = NULL;
586 }
587
588 kfree(old);
589
590 return count;
591}
592
593static ssize_t driver_override_show(struct device *dev,
594 struct device_attribute *attr, char *buf)
595{
596 struct pci_dev *pdev = to_pci_dev(dev);
597
598 return snprintf(buf, PAGE_SIZE, "%s\n", pdev->driver_override);
599}
600static DEVICE_ATTR_RW(driver_override);
601
602static struct attribute *pci_dev_attrs[] = {
603 &dev_attr_resource.attr,
604 &dev_attr_vendor.attr,
605 &dev_attr_device.attr,
606 &dev_attr_subsystem_vendor.attr,
607 &dev_attr_subsystem_device.attr,
608 &dev_attr_revision.attr,
609 &dev_attr_class.attr,
610 &dev_attr_irq.attr,
611 &dev_attr_local_cpus.attr,
612 &dev_attr_local_cpulist.attr,
613 &dev_attr_modalias.attr,
614#ifdef CONFIG_NUMA
615 &dev_attr_numa_node.attr,
616#endif
617 &dev_attr_dma_mask_bits.attr,
618 &dev_attr_consistent_dma_mask_bits.attr,
619 &dev_attr_enable.attr,
620 &dev_attr_broken_parity_status.attr,
621 &dev_attr_msi_bus.attr,
622#if defined(CONFIG_PM) && defined(CONFIG_ACPI)
623 &dev_attr_d3cold_allowed.attr,
624#endif
625#ifdef CONFIG_OF
626 &dev_attr_devspec.attr,
627#endif
628 &dev_attr_driver_override.attr,
629 NULL,
630};
631
632static const struct attribute_group pci_dev_group = {
633 .attrs = pci_dev_attrs,
634};
635
636const struct attribute_group *pci_dev_groups[] = {
637 &pci_dev_group,
638 NULL,
639};
640
641static struct attribute *pcibus_attrs[] = {
642 &dev_attr_rescan.attr,
643 &dev_attr_cpuaffinity.attr,
644 &dev_attr_cpulistaffinity.attr,
645 NULL,
646};
647
648static const struct attribute_group pcibus_group = {
649 .attrs = pcibus_attrs,
650};
651
652const struct attribute_group *pcibus_groups[] = {
653 &pcibus_group,
654 NULL,
655};
656
657static ssize_t boot_vga_show(struct device *dev, struct device_attribute *attr,
658 char *buf)
659{
660 struct pci_dev *pdev = to_pci_dev(dev);
661 struct pci_dev *vga_dev = vga_default_device();
662
663 if (vga_dev)
664 return sprintf(buf, "%u\n", (pdev == vga_dev));
665
666 return sprintf(buf, "%u\n",
667 !!(pdev->resource[PCI_ROM_RESOURCE].flags &
668 IORESOURCE_ROM_SHADOW));
669}
670static struct device_attribute vga_attr = __ATTR_RO(boot_vga);
671
672static ssize_t pci_read_config(struct file *filp, struct kobject *kobj,
673 struct bin_attribute *bin_attr, char *buf,
674 loff_t off, size_t count)
675{
676 struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj));
677 unsigned int size = 64;
678 loff_t init_off = off;
679 u8 *data = (u8 *) buf;
680
681
682 if (file_ns_capable(filp, &init_user_ns, CAP_SYS_ADMIN))
683 size = dev->cfg_size;
684 else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
685 size = 128;
686
687 if (off > size)
688 return 0;
689 if (off + count > size) {
690 size -= off;
691 count = size;
692 } else {
693 size = count;
694 }
695
696 pci_config_pm_runtime_get(dev);
697
698 if ((off & 1) && size) {
699 u8 val;
700 pci_user_read_config_byte(dev, off, &val);
701 data[off - init_off] = val;
702 off++;
703 size--;
704 }
705
706 if ((off & 3) && size > 2) {
707 u16 val;
708 pci_user_read_config_word(dev, off, &val);
709 data[off - init_off] = val & 0xff;
710 data[off - init_off + 1] = (val >> 8) & 0xff;
711 off += 2;
712 size -= 2;
713 }
714
715 while (size > 3) {
716 u32 val;
717 pci_user_read_config_dword(dev, off, &val);
718 data[off - init_off] = val & 0xff;
719 data[off - init_off + 1] = (val >> 8) & 0xff;
720 data[off - init_off + 2] = (val >> 16) & 0xff;
721 data[off - init_off + 3] = (val >> 24) & 0xff;
722 off += 4;
723 size -= 4;
724 }
725
726 if (size >= 2) {
727 u16 val;
728 pci_user_read_config_word(dev, off, &val);
729 data[off - init_off] = val & 0xff;
730 data[off - init_off + 1] = (val >> 8) & 0xff;
731 off += 2;
732 size -= 2;
733 }
734
735 if (size > 0) {
736 u8 val;
737 pci_user_read_config_byte(dev, off, &val);
738 data[off - init_off] = val;
739 off++;
740 --size;
741 }
742
743 pci_config_pm_runtime_put(dev);
744
745 return count;
746}
747
748static ssize_t pci_write_config(struct file *filp, struct kobject *kobj,
749 struct bin_attribute *bin_attr, char *buf,
750 loff_t off, size_t count)
751{
752 struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj));
753 unsigned int size = count;
754 loff_t init_off = off;
755 u8 *data = (u8 *) buf;
756
757 if (off > dev->cfg_size)
758 return 0;
759 if (off + count > dev->cfg_size) {
760 size = dev->cfg_size - off;
761 count = size;
762 }
763
764 pci_config_pm_runtime_get(dev);
765
766 if ((off & 1) && size) {
767 pci_user_write_config_byte(dev, off, data[off - init_off]);
768 off++;
769 size--;
770 }
771
772 if ((off & 3) && size > 2) {
773 u16 val = data[off - init_off];
774 val |= (u16) data[off - init_off + 1] << 8;
775 pci_user_write_config_word(dev, off, val);
776 off += 2;
777 size -= 2;
778 }
779
780 while (size > 3) {
781 u32 val = data[off - init_off];
782 val |= (u32) data[off - init_off + 1] << 8;
783 val |= (u32) data[off - init_off + 2] << 16;
784 val |= (u32) data[off - init_off + 3] << 24;
785 pci_user_write_config_dword(dev, off, val);
786 off += 4;
787 size -= 4;
788 }
789
790 if (size >= 2) {
791 u16 val = data[off - init_off];
792 val |= (u16) data[off - init_off + 1] << 8;
793 pci_user_write_config_word(dev, off, val);
794 off += 2;
795 size -= 2;
796 }
797
798 if (size) {
799 pci_user_write_config_byte(dev, off, data[off - init_off]);
800 off++;
801 --size;
802 }
803
804 pci_config_pm_runtime_put(dev);
805
806 return count;
807}
808
809static ssize_t read_vpd_attr(struct file *filp, struct kobject *kobj,
810 struct bin_attribute *bin_attr, char *buf,
811 loff_t off, size_t count)
812{
813 struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj));
814
815 if (bin_attr->size > 0) {
816 if (off > bin_attr->size)
817 count = 0;
818 else if (count > bin_attr->size - off)
819 count = bin_attr->size - off;
820 }
821
822 return pci_read_vpd(dev, off, count, buf);
823}
824
825static ssize_t write_vpd_attr(struct file *filp, struct kobject *kobj,
826 struct bin_attribute *bin_attr, char *buf,
827 loff_t off, size_t count)
828{
829 struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj));
830
831 if (bin_attr->size > 0) {
832 if (off > bin_attr->size)
833 count = 0;
834 else if (count > bin_attr->size - off)
835 count = bin_attr->size - off;
836 }
837
838 return pci_write_vpd(dev, off, count, buf);
839}
840
841#ifdef HAVE_PCI_LEGACY
842
843
844
845
846
847
848
849
850
851
852
853
854static ssize_t pci_read_legacy_io(struct file *filp, struct kobject *kobj,
855 struct bin_attribute *bin_attr, char *buf,
856 loff_t off, size_t count)
857{
858 struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj));
859
860
861 if (count != 1 && count != 2 && count != 4)
862 return -EINVAL;
863
864 return pci_legacy_read(bus, off, (u32 *)buf, count);
865}
866
867
868
869
870
871
872
873
874
875
876
877
878
879static ssize_t pci_write_legacy_io(struct file *filp, struct kobject *kobj,
880 struct bin_attribute *bin_attr, char *buf,
881 loff_t off, size_t count)
882{
883 struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj));
884
885
886 if (count != 1 && count != 2 && count != 4)
887 return -EINVAL;
888
889 return pci_legacy_write(bus, off, *(u32 *)buf, count);
890}
891
892
893
894
895
896
897
898
899
900
901
902
903static int pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj,
904 struct bin_attribute *attr,
905 struct vm_area_struct *vma)
906{
907 struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj));
908
909 return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem);
910}
911
912
913
914
915
916
917
918
919
920
921
922
923static int pci_mmap_legacy_io(struct file *filp, struct kobject *kobj,
924 struct bin_attribute *attr,
925 struct vm_area_struct *vma)
926{
927 struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj));
928
929 return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io);
930}
931
932
933
934
935
936
937
938
939void __weak pci_adjust_legacy_attr(struct pci_bus *b,
940 enum pci_mmap_state mmap_type)
941{
942}
943
944
945
946
947
948
949
950
951
952
953
954
955void pci_create_legacy_files(struct pci_bus *b)
956{
957 int error;
958
959 b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2,
960 GFP_ATOMIC);
961 if (!b->legacy_io)
962 goto kzalloc_err;
963
964 sysfs_bin_attr_init(b->legacy_io);
965 b->legacy_io->attr.name = "legacy_io";
966 b->legacy_io->size = 0xffff;
967 b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
968 b->legacy_io->read = pci_read_legacy_io;
969 b->legacy_io->write = pci_write_legacy_io;
970 b->legacy_io->mmap = pci_mmap_legacy_io;
971 pci_adjust_legacy_attr(b, pci_mmap_io);
972 error = device_create_bin_file(&b->dev, b->legacy_io);
973 if (error)
974 goto legacy_io_err;
975
976
977 b->legacy_mem = b->legacy_io + 1;
978 sysfs_bin_attr_init(b->legacy_mem);
979 b->legacy_mem->attr.name = "legacy_mem";
980 b->legacy_mem->size = 1024*1024;
981 b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
982 b->legacy_mem->mmap = pci_mmap_legacy_mem;
983 pci_adjust_legacy_attr(b, pci_mmap_mem);
984 error = device_create_bin_file(&b->dev, b->legacy_mem);
985 if (error)
986 goto legacy_mem_err;
987
988 return;
989
990legacy_mem_err:
991 device_remove_bin_file(&b->dev, b->legacy_io);
992legacy_io_err:
993 kfree(b->legacy_io);
994 b->legacy_io = NULL;
995kzalloc_err:
996 printk(KERN_WARNING "pci: warning: could not create legacy I/O port and ISA memory resources to sysfs\n");
997 return;
998}
999
1000void pci_remove_legacy_files(struct pci_bus *b)
1001{
1002 if (b->legacy_io) {
1003 device_remove_bin_file(&b->dev, b->legacy_io);
1004 device_remove_bin_file(&b->dev, b->legacy_mem);
1005 kfree(b->legacy_io);
1006 }
1007}
1008#endif
1009
1010#if defined(HAVE_PCI_MMAP) || defined(ARCH_GENERIC_PCI_MMAP_RESOURCE)
1011
1012int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma,
1013 enum pci_mmap_api mmap_api)
1014{
1015 unsigned long nr, start, size;
1016 resource_size_t pci_start = 0, pci_end;
1017
1018 if (pci_resource_len(pdev, resno) == 0)
1019 return 0;
1020 nr = vma_pages(vma);
1021 start = vma->vm_pgoff;
1022 size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1;
1023 if (mmap_api == PCI_MMAP_PROCFS) {
1024 pci_resource_to_user(pdev, resno, &pdev->resource[resno],
1025 &pci_start, &pci_end);
1026 pci_start >>= PAGE_SHIFT;
1027 }
1028 if (start >= pci_start && start < pci_start + size &&
1029 start + nr <= pci_start + size)
1030 return 1;
1031 return 0;
1032}
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
1044 struct vm_area_struct *vma, int write_combine)
1045{
1046 struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
1047 int bar = (unsigned long)attr->private;
1048 enum pci_mmap_state mmap_type;
1049 struct resource *res = &pdev->resource[bar];
1050
1051 if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(res->start))
1052 return -EINVAL;
1053
1054 if (!pci_mmap_fits(pdev, bar, vma, PCI_MMAP_SYSFS)) {
1055 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",
1056 current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff,
1057 pci_name(pdev), bar,
1058 (u64)pci_resource_start(pdev, bar),
1059 (u64)pci_resource_len(pdev, bar));
1060 return -EINVAL;
1061 }
1062 mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
1063
1064 return pci_mmap_resource_range(pdev, bar, vma, mmap_type, write_combine);
1065}
1066
1067static int pci_mmap_resource_uc(struct file *filp, struct kobject *kobj,
1068 struct bin_attribute *attr,
1069 struct vm_area_struct *vma)
1070{
1071 return pci_mmap_resource(kobj, attr, vma, 0);
1072}
1073
1074static int pci_mmap_resource_wc(struct file *filp, struct kobject *kobj,
1075 struct bin_attribute *attr,
1076 struct vm_area_struct *vma)
1077{
1078 return pci_mmap_resource(kobj, attr, vma, 1);
1079}
1080
1081static ssize_t pci_resource_io(struct file *filp, struct kobject *kobj,
1082 struct bin_attribute *attr, char *buf,
1083 loff_t off, size_t count, bool write)
1084{
1085 struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
1086 int bar = (unsigned long)attr->private;
1087 struct resource *res;
1088 unsigned long port = off;
1089
1090 res = &pdev->resource[bar];
1091
1092 port += pci_resource_start(pdev, bar);
1093
1094 if (port > pci_resource_end(pdev, bar))
1095 return 0;
1096
1097 if (port + count - 1 > pci_resource_end(pdev, bar))
1098 return -EINVAL;
1099
1100 switch (count) {
1101 case 1:
1102 if (write)
1103 outb(*(u8 *)buf, port);
1104 else
1105 *(u8 *)buf = inb(port);
1106 return 1;
1107 case 2:
1108 if (write)
1109 outw(*(u16 *)buf, port);
1110 else
1111 *(u16 *)buf = inw(port);
1112 return 2;
1113 case 4:
1114 if (write)
1115 outl(*(u32 *)buf, port);
1116 else
1117 *(u32 *)buf = inl(port);
1118 return 4;
1119 }
1120 return -EINVAL;
1121}
1122
1123static ssize_t pci_read_resource_io(struct file *filp, struct kobject *kobj,
1124 struct bin_attribute *attr, char *buf,
1125 loff_t off, size_t count)
1126{
1127 return pci_resource_io(filp, kobj, attr, buf, off, count, false);
1128}
1129
1130static ssize_t pci_write_resource_io(struct file *filp, struct kobject *kobj,
1131 struct bin_attribute *attr, char *buf,
1132 loff_t off, size_t count)
1133{
1134 return pci_resource_io(filp, kobj, attr, buf, off, count, true);
1135}
1136
1137
1138
1139
1140
1141
1142
1143
1144static void pci_remove_resource_files(struct pci_dev *pdev)
1145{
1146 int i;
1147
1148 for (i = 0; i < PCI_ROM_RESOURCE; i++) {
1149 struct bin_attribute *res_attr;
1150
1151 res_attr = pdev->res_attr[i];
1152 if (res_attr) {
1153 sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
1154 kfree(res_attr);
1155 }
1156
1157 res_attr = pdev->res_attr_wc[i];
1158 if (res_attr) {
1159 sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
1160 kfree(res_attr);
1161 }
1162 }
1163}
1164
1165static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
1166{
1167
1168 int name_len = write_combine ? 13 : 10;
1169 struct bin_attribute *res_attr;
1170 char *res_attr_name;
1171 int retval;
1172
1173 res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC);
1174 if (!res_attr)
1175 return -ENOMEM;
1176
1177 res_attr_name = (char *)(res_attr + 1);
1178
1179 sysfs_bin_attr_init(res_attr);
1180 if (write_combine) {
1181 pdev->res_attr_wc[num] = res_attr;
1182 sprintf(res_attr_name, "resource%d_wc", num);
1183 res_attr->mmap = pci_mmap_resource_wc;
1184 } else {
1185 pdev->res_attr[num] = res_attr;
1186 sprintf(res_attr_name, "resource%d", num);
1187 if (pci_resource_flags(pdev, num) & IORESOURCE_IO) {
1188 res_attr->read = pci_read_resource_io;
1189 res_attr->write = pci_write_resource_io;
1190 if (arch_can_pci_mmap_io())
1191 res_attr->mmap = pci_mmap_resource_uc;
1192 } else {
1193 res_attr->mmap = pci_mmap_resource_uc;
1194 }
1195 }
1196 res_attr->attr.name = res_attr_name;
1197 res_attr->attr.mode = S_IRUSR | S_IWUSR;
1198 res_attr->size = pci_resource_len(pdev, num);
1199 res_attr->private = (void *)(unsigned long)num;
1200 retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
1201 if (retval)
1202 kfree(res_attr);
1203
1204 return retval;
1205}
1206
1207
1208
1209
1210
1211
1212
1213static int pci_create_resource_files(struct pci_dev *pdev)
1214{
1215 int i;
1216 int retval;
1217
1218
1219 for (i = 0; i < PCI_ROM_RESOURCE; i++) {
1220
1221
1222 if (!pci_resource_len(pdev, i))
1223 continue;
1224
1225 retval = pci_create_attr(pdev, i, 0);
1226
1227 if (!retval && arch_can_pci_mmap_wc() &&
1228 pdev->resource[i].flags & IORESOURCE_PREFETCH)
1229 retval = pci_create_attr(pdev, i, 1);
1230 if (retval) {
1231 pci_remove_resource_files(pdev);
1232 return retval;
1233 }
1234 }
1235 return 0;
1236}
1237#else
1238int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; }
1239void __weak pci_remove_resource_files(struct pci_dev *dev) { return; }
1240#endif
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253static ssize_t pci_write_rom(struct file *filp, struct kobject *kobj,
1254 struct bin_attribute *bin_attr, char *buf,
1255 loff_t off, size_t count)
1256{
1257 struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
1258
1259 if ((off == 0) && (*buf == '0') && (count == 2))
1260 pdev->rom_attr_enabled = 0;
1261 else
1262 pdev->rom_attr_enabled = 1;
1263
1264 return count;
1265}
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279static ssize_t pci_read_rom(struct file *filp, struct kobject *kobj,
1280 struct bin_attribute *bin_attr, char *buf,
1281 loff_t off, size_t count)
1282{
1283 struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
1284 void __iomem *rom;
1285 size_t size;
1286
1287 if (!pdev->rom_attr_enabled)
1288 return -EINVAL;
1289
1290 rom = pci_map_rom(pdev, &size);
1291 if (!rom || !size)
1292 return -EIO;
1293
1294 if (off >= size)
1295 count = 0;
1296 else {
1297 if (off + count > size)
1298 count = size - off;
1299
1300 memcpy_fromio(buf, rom + off, count);
1301 }
1302 pci_unmap_rom(pdev, rom);
1303
1304 return count;
1305}
1306
1307static struct bin_attribute pci_config_attr = {
1308 .attr = {
1309 .name = "config",
1310 .mode = S_IRUGO | S_IWUSR,
1311 },
1312 .size = PCI_CFG_SPACE_SIZE,
1313 .read = pci_read_config,
1314 .write = pci_write_config,
1315};
1316
1317static struct bin_attribute pcie_config_attr = {
1318 .attr = {
1319 .name = "config",
1320 .mode = S_IRUGO | S_IWUSR,
1321 },
1322 .size = PCI_CFG_SPACE_EXP_SIZE,
1323 .read = pci_read_config,
1324 .write = pci_write_config,
1325};
1326
1327static ssize_t reset_store(struct device *dev, struct device_attribute *attr,
1328 const char *buf, size_t count)
1329{
1330 struct pci_dev *pdev = to_pci_dev(dev);
1331 unsigned long val;
1332 ssize_t result = kstrtoul(buf, 0, &val);
1333
1334 if (result < 0)
1335 return result;
1336
1337 if (val != 1)
1338 return -EINVAL;
1339
1340 result = pci_reset_function(pdev);
1341 if (result < 0)
1342 return result;
1343
1344 return count;
1345}
1346
1347static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store);
1348
1349static int pci_create_capabilities_sysfs(struct pci_dev *dev)
1350{
1351 int retval;
1352 struct bin_attribute *attr;
1353
1354
1355 if (dev->vpd) {
1356 attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
1357 if (!attr)
1358 return -ENOMEM;
1359
1360 sysfs_bin_attr_init(attr);
1361 attr->size = 0;
1362 attr->attr.name = "vpd";
1363 attr->attr.mode = S_IRUSR | S_IWUSR;
1364 attr->read = read_vpd_attr;
1365 attr->write = write_vpd_attr;
1366 retval = sysfs_create_bin_file(&dev->dev.kobj, attr);
1367 if (retval) {
1368 kfree(attr);
1369 return retval;
1370 }
1371 dev->vpd->attr = attr;
1372 }
1373
1374
1375 pcie_aspm_create_sysfs_dev_files(dev);
1376
1377 if (!pci_probe_reset_function(dev)) {
1378 retval = device_create_file(&dev->dev, &reset_attr);
1379 if (retval)
1380 goto error;
1381 dev->reset_fn = 1;
1382 }
1383 return 0;
1384
1385error:
1386 pcie_aspm_remove_sysfs_dev_files(dev);
1387 if (dev->vpd && dev->vpd->attr) {
1388 sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr);
1389 kfree(dev->vpd->attr);
1390 }
1391
1392 return retval;
1393}
1394
1395int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev)
1396{
1397 int retval;
1398 int rom_size;
1399 struct bin_attribute *attr;
1400
1401 if (!sysfs_initialized)
1402 return -EACCES;
1403
1404 if (pdev->cfg_size > PCI_CFG_SPACE_SIZE)
1405 retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr);
1406 else
1407 retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr);
1408 if (retval)
1409 goto err;
1410
1411 retval = pci_create_resource_files(pdev);
1412 if (retval)
1413 goto err_config_file;
1414
1415
1416 rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
1417 if (rom_size) {
1418 attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
1419 if (!attr) {
1420 retval = -ENOMEM;
1421 goto err_resource_files;
1422 }
1423 sysfs_bin_attr_init(attr);
1424 attr->size = rom_size;
1425 attr->attr.name = "rom";
1426 attr->attr.mode = S_IRUSR | S_IWUSR;
1427 attr->read = pci_read_rom;
1428 attr->write = pci_write_rom;
1429 retval = sysfs_create_bin_file(&pdev->dev.kobj, attr);
1430 if (retval) {
1431 kfree(attr);
1432 goto err_resource_files;
1433 }
1434 pdev->rom_attr = attr;
1435 }
1436
1437
1438 retval = pci_create_capabilities_sysfs(pdev);
1439 if (retval)
1440 goto err_rom_file;
1441
1442 pci_create_firmware_label_files(pdev);
1443
1444 return 0;
1445
1446err_rom_file:
1447 if (pdev->rom_attr) {
1448 sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
1449 kfree(pdev->rom_attr);
1450 pdev->rom_attr = NULL;
1451 }
1452err_resource_files:
1453 pci_remove_resource_files(pdev);
1454err_config_file:
1455 if (pdev->cfg_size > PCI_CFG_SPACE_SIZE)
1456 sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
1457 else
1458 sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
1459err:
1460 return retval;
1461}
1462
1463static void pci_remove_capabilities_sysfs(struct pci_dev *dev)
1464{
1465 if (dev->vpd && dev->vpd->attr) {
1466 sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr);
1467 kfree(dev->vpd->attr);
1468 }
1469
1470 pcie_aspm_remove_sysfs_dev_files(dev);
1471 if (dev->reset_fn) {
1472 device_remove_file(&dev->dev, &reset_attr);
1473 dev->reset_fn = 0;
1474 }
1475}
1476
1477
1478
1479
1480
1481
1482
1483void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
1484{
1485 if (!sysfs_initialized)
1486 return;
1487
1488 pci_remove_capabilities_sysfs(pdev);
1489
1490 if (pdev->cfg_size > PCI_CFG_SPACE_SIZE)
1491 sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
1492 else
1493 sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
1494
1495 pci_remove_resource_files(pdev);
1496
1497 if (pdev->rom_attr) {
1498 sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
1499 kfree(pdev->rom_attr);
1500 pdev->rom_attr = NULL;
1501 }
1502
1503 pci_remove_firmware_label_files(pdev);
1504}
1505
1506static int __init pci_sysfs_init(void)
1507{
1508 struct pci_dev *pdev = NULL;
1509 int retval;
1510
1511 sysfs_initialized = 1;
1512 for_each_pci_dev(pdev) {
1513 retval = pci_create_sysfs_dev_files(pdev);
1514 if (retval) {
1515 pci_dev_put(pdev);
1516 return retval;
1517 }
1518 }
1519
1520 return 0;
1521}
1522late_initcall(pci_sysfs_init);
1523
1524static struct attribute *pci_dev_dev_attrs[] = {
1525 &vga_attr.attr,
1526 NULL,
1527};
1528
1529static umode_t pci_dev_attrs_are_visible(struct kobject *kobj,
1530 struct attribute *a, int n)
1531{
1532 struct device *dev = kobj_to_dev(kobj);
1533 struct pci_dev *pdev = to_pci_dev(dev);
1534
1535 if (a == &vga_attr.attr)
1536 if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
1537 return 0;
1538
1539 return a->mode;
1540}
1541
1542static struct attribute *pci_dev_hp_attrs[] = {
1543 &dev_remove_attr.attr,
1544 &dev_rescan_attr.attr,
1545 NULL,
1546};
1547
1548static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj,
1549 struct attribute *a, int n)
1550{
1551 struct device *dev = kobj_to_dev(kobj);
1552 struct pci_dev *pdev = to_pci_dev(dev);
1553
1554 if (pdev->is_virtfn)
1555 return 0;
1556
1557 return a->mode;
1558}
1559
1560static struct attribute_group pci_dev_hp_attr_group = {
1561 .attrs = pci_dev_hp_attrs,
1562 .is_visible = pci_dev_hp_attrs_are_visible,
1563};
1564
1565#ifdef CONFIG_PCI_IOV
1566static struct attribute *sriov_dev_attrs[] = {
1567 &sriov_totalvfs_attr.attr,
1568 &sriov_numvfs_attr.attr,
1569 &sriov_drivers_autoprobe_attr.attr,
1570 NULL,
1571};
1572
1573static umode_t sriov_attrs_are_visible(struct kobject *kobj,
1574 struct attribute *a, int n)
1575{
1576 struct device *dev = kobj_to_dev(kobj);
1577
1578 if (!dev_is_pf(dev))
1579 return 0;
1580
1581 return a->mode;
1582}
1583
1584static struct attribute_group sriov_dev_attr_group = {
1585 .attrs = sriov_dev_attrs,
1586 .is_visible = sriov_attrs_are_visible,
1587};
1588#endif
1589
1590static struct attribute_group pci_dev_attr_group = {
1591 .attrs = pci_dev_dev_attrs,
1592 .is_visible = pci_dev_attrs_are_visible,
1593};
1594
1595static const struct attribute_group *pci_dev_attr_groups[] = {
1596 &pci_dev_attr_group,
1597 &pci_dev_hp_attr_group,
1598#ifdef CONFIG_PCI_IOV
1599 &sriov_dev_attr_group,
1600#endif
1601 NULL,
1602};
1603
1604struct device_type pci_dev_type = {
1605 .groups = pci_dev_attr_groups,
1606};
1607