2 * drivers/pci/pci-sysfs.c
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>
11 * File attributes for PCI devices
13 * Modeled after usb's driverfs.c
18 #include <linux/kernel.h>
19 #include <linux/sched.h>
20 #include <linux/pci.h>
21 #include <linux/stat.h>
22 #include <linux/topology.h>
24 #include <linux/capability.h>
25 #include <linux/pci-aspm.h>
28 static int sysfs_initialized; /* = 0 */
30 /* show configuration fields */
31 #define pci_config_attr(field, format_string) \
33 field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
35 struct pci_dev *pdev; \
37 pdev = to_pci_dev (dev); \
38 return sprintf (buf, format_string, pdev->field); \
41 pci_config_attr(vendor, "0x%04x\n");
42 pci_config_attr(device, "0x%04x\n");
43 pci_config_attr(subsystem_vendor, "0x%04x\n");
44 pci_config_attr(subsystem_device, "0x%04x\n");
45 pci_config_attr(class, "0x%06x\n");
46 pci_config_attr(irq, "%u\n");
48 static ssize_t broken_parity_status_show(struct device *dev,
49 struct device_attribute *attr,
52 struct pci_dev *pdev = to_pci_dev(dev);
53 return sprintf (buf, "%u\n", pdev->broken_parity_status);
56 static ssize_t broken_parity_status_store(struct device *dev,
57 struct device_attribute *attr,
58 const char *buf, size_t count)
60 struct pci_dev *pdev = to_pci_dev(dev);
63 if (strict_strtoul(buf, 0, &val) < 0)
66 pdev->broken_parity_status = !!val;
71 static ssize_t local_cpus_show(struct device *dev,
72 struct device_attribute *attr, char *buf)
77 mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
78 len = cpumask_scnprintf(buf, PAGE_SIZE-2, &mask);
85 static ssize_t local_cpulist_show(struct device *dev,
86 struct device_attribute *attr, char *buf)
91 mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
92 len = cpulist_scnprintf(buf, PAGE_SIZE-2, &mask);
100 resource_show(struct device * dev, struct device_attribute *attr, char * buf)
102 struct pci_dev * pci_dev = to_pci_dev(dev);
106 resource_size_t start, end;
108 if (pci_dev->subordinate)
109 max = DEVICE_COUNT_RESOURCE;
111 max = PCI_BRIDGE_RESOURCES;
113 for (i = 0; i < max; i++) {
114 struct resource *res = &pci_dev->resource[i];
115 pci_resource_to_user(pci_dev, i, res, &start, &end);
116 str += sprintf(str,"0x%016llx 0x%016llx 0x%016llx\n",
117 (unsigned long long)start,
118 (unsigned long long)end,
119 (unsigned long long)res->flags);
124 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
126 struct pci_dev *pci_dev = to_pci_dev(dev);
128 return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n",
129 pci_dev->vendor, pci_dev->device,
130 pci_dev->subsystem_vendor, pci_dev->subsystem_device,
131 (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8),
132 (u8)(pci_dev->class));
135 static ssize_t is_enabled_store(struct device *dev,
136 struct device_attribute *attr, const char *buf,
139 struct pci_dev *pdev = to_pci_dev(dev);
141 ssize_t result = strict_strtoul(buf, 0, &val);
146 /* this can crash the machine when done on the "wrong" device */
147 if (!capable(CAP_SYS_ADMIN))
151 if (atomic_read(&pdev->enable_cnt) != 0)
152 pci_disable_device(pdev);
156 result = pci_enable_device(pdev);
158 return result < 0 ? result : count;
161 static ssize_t is_enabled_show(struct device *dev,
162 struct device_attribute *attr, char *buf)
164 struct pci_dev *pdev;
166 pdev = to_pci_dev (dev);
167 return sprintf (buf, "%u\n", atomic_read(&pdev->enable_cnt));
172 numa_node_show(struct device *dev, struct device_attribute *attr, char *buf)
174 return sprintf (buf, "%d\n", dev->numa_node);
179 msi_bus_show(struct device *dev, struct device_attribute *attr, char *buf)
181 struct pci_dev *pdev = to_pci_dev(dev);
183 if (!pdev->subordinate)
186 return sprintf (buf, "%u\n",
187 !(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI));
191 msi_bus_store(struct device *dev, struct device_attribute *attr,
192 const char *buf, size_t count)
194 struct pci_dev *pdev = to_pci_dev(dev);
197 if (strict_strtoul(buf, 0, &val) < 0)
200 /* bad things may happen if the no_msi flag is changed
201 * while some drivers are loaded */
202 if (!capable(CAP_SYS_ADMIN))
205 /* Maybe pci devices without subordinate busses shouldn't even have this
206 * attribute in the first place? */
207 if (!pdev->subordinate)
210 /* Is the flag going to change, or keep the value it already had? */
211 if (!(pdev->subordinate->bus_flags & PCI_BUS_FLAGS_NO_MSI) ^
213 pdev->subordinate->bus_flags ^= PCI_BUS_FLAGS_NO_MSI;
215 dev_warn(&pdev->dev, "forced subordinate bus to%s support MSI,"
216 " bad things could happen\n", val ? "" : " not");
222 struct device_attribute pci_dev_attrs[] = {
226 __ATTR_RO(subsystem_vendor),
227 __ATTR_RO(subsystem_device),
230 __ATTR_RO(local_cpus),
231 __ATTR_RO(local_cpulist),
234 __ATTR_RO(numa_node),
236 __ATTR(enable, 0600, is_enabled_show, is_enabled_store),
237 __ATTR(broken_parity_status,(S_IRUGO|S_IWUSR),
238 broken_parity_status_show,broken_parity_status_store),
239 __ATTR(msi_bus, 0644, msi_bus_show, msi_bus_store),
244 pci_read_config(struct kobject *kobj, struct bin_attribute *bin_attr,
245 char *buf, loff_t off, size_t count)
247 struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj));
248 unsigned int size = 64;
249 loff_t init_off = off;
250 u8 *data = (u8*) buf;
252 /* Several chips lock up trying to read undefined config space */
253 if (capable(CAP_SYS_ADMIN)) {
254 size = dev->cfg_size;
255 } else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
261 if (off + count > size) {
268 if ((off & 1) && size) {
270 pci_user_read_config_byte(dev, off, &val);
271 data[off - init_off] = val;
276 if ((off & 3) && size > 2) {
278 pci_user_read_config_word(dev, off, &val);
279 data[off - init_off] = val & 0xff;
280 data[off - init_off + 1] = (val >> 8) & 0xff;
287 pci_user_read_config_dword(dev, off, &val);
288 data[off - init_off] = val & 0xff;
289 data[off - init_off + 1] = (val >> 8) & 0xff;
290 data[off - init_off + 2] = (val >> 16) & 0xff;
291 data[off - init_off + 3] = (val >> 24) & 0xff;
298 pci_user_read_config_word(dev, off, &val);
299 data[off - init_off] = val & 0xff;
300 data[off - init_off + 1] = (val >> 8) & 0xff;
307 pci_user_read_config_byte(dev, off, &val);
308 data[off - init_off] = val;
317 pci_write_config(struct kobject *kobj, struct bin_attribute *bin_attr,
318 char *buf, loff_t off, size_t count)
320 struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj));
321 unsigned int size = count;
322 loff_t init_off = off;
323 u8 *data = (u8*) buf;
325 if (off > dev->cfg_size)
327 if (off + count > dev->cfg_size) {
328 size = dev->cfg_size - off;
332 if ((off & 1) && size) {
333 pci_user_write_config_byte(dev, off, data[off - init_off]);
338 if ((off & 3) && size > 2) {
339 u16 val = data[off - init_off];
340 val |= (u16) data[off - init_off + 1] << 8;
341 pci_user_write_config_word(dev, off, val);
347 u32 val = data[off - init_off];
348 val |= (u32) data[off - init_off + 1] << 8;
349 val |= (u32) data[off - init_off + 2] << 16;
350 val |= (u32) data[off - init_off + 3] << 24;
351 pci_user_write_config_dword(dev, off, val);
357 u16 val = data[off - init_off];
358 val |= (u16) data[off - init_off + 1] << 8;
359 pci_user_write_config_word(dev, off, val);
365 pci_user_write_config_byte(dev, off, data[off - init_off]);
374 pci_read_vpd(struct kobject *kobj, struct bin_attribute *bin_attr,
375 char *buf, loff_t off, size_t count)
377 struct pci_dev *dev =
378 to_pci_dev(container_of(kobj, struct device, kobj));
382 if (off > bin_attr->size)
384 else if (count > bin_attr->size - off)
385 count = bin_attr->size - off;
389 ret = dev->vpd->ops->read(dev, off, end - off, buf);
400 pci_write_vpd(struct kobject *kobj, struct bin_attribute *bin_attr,
401 char *buf, loff_t off, size_t count)
403 struct pci_dev *dev =
404 to_pci_dev(container_of(kobj, struct device, kobj));
408 if (off > bin_attr->size)
410 else if (count > bin_attr->size - off)
411 count = bin_attr->size - off;
415 ret = dev->vpd->ops->write(dev, off, end - off, buf);
425 #ifdef HAVE_PCI_LEGACY
427 * pci_read_legacy_io - read byte(s) from legacy I/O port space
428 * @kobj: kobject corresponding to file to read from
429 * @buf: buffer to store results
430 * @off: offset into legacy I/O port space
431 * @count: number of bytes to read
433 * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific
434 * callback routine (pci_legacy_read).
437 pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
438 char *buf, loff_t off, size_t count)
440 struct pci_bus *bus = to_pci_bus(container_of(kobj,
444 /* Only support 1, 2 or 4 byte accesses */
445 if (count != 1 && count != 2 && count != 4)
448 return pci_legacy_read(bus, off, (u32 *)buf, count);
452 * pci_write_legacy_io - write byte(s) to legacy I/O port space
453 * @kobj: kobject corresponding to file to read from
454 * @buf: buffer containing value to be written
455 * @off: offset into legacy I/O port space
456 * @count: number of bytes to write
458 * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific
459 * callback routine (pci_legacy_write).
462 pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
463 char *buf, loff_t off, size_t count)
465 struct pci_bus *bus = to_pci_bus(container_of(kobj,
468 /* Only support 1, 2 or 4 byte accesses */
469 if (count != 1 && count != 2 && count != 4)
472 return pci_legacy_write(bus, off, *(u32 *)buf, count);
476 * pci_mmap_legacy_mem - map legacy PCI memory into user memory space
477 * @kobj: kobject corresponding to device to be mapped
478 * @attr: struct bin_attribute for this file
479 * @vma: struct vm_area_struct passed to mmap
481 * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap
482 * legacy memory space (first meg of bus space) into application virtual
486 pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
487 struct vm_area_struct *vma)
489 struct pci_bus *bus = to_pci_bus(container_of(kobj,
493 return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem);
497 * pci_mmap_legacy_io - map legacy PCI IO into user memory space
498 * @kobj: kobject corresponding to device to be mapped
499 * @attr: struct bin_attribute for this file
500 * @vma: struct vm_area_struct passed to mmap
502 * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap
503 * legacy IO space (first meg of bus space) into application virtual
504 * memory space. Returns -ENOSYS if the operation isn't supported
507 pci_mmap_legacy_io(struct kobject *kobj, struct bin_attribute *attr,
508 struct vm_area_struct *vma)
510 struct pci_bus *bus = to_pci_bus(container_of(kobj,
514 return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io);
518 * pci_create_legacy_files - create legacy I/O port and memory files
519 * @b: bus to create files under
521 * Some platforms allow access to legacy I/O port and ISA memory space on
522 * a per-bus basis. This routine creates the files and ties them into
523 * their associated read, write and mmap files from pci-sysfs.c
525 * On error unwind, but don't propogate the error to the caller
526 * as it is ok to set up the PCI bus without these files.
528 void pci_create_legacy_files(struct pci_bus *b)
532 b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2,
537 b->legacy_io->attr.name = "legacy_io";
538 b->legacy_io->size = 0xffff;
539 b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
540 b->legacy_io->read = pci_read_legacy_io;
541 b->legacy_io->write = pci_write_legacy_io;
542 b->legacy_io->mmap = pci_mmap_legacy_io;
543 error = device_create_bin_file(&b->dev, b->legacy_io);
547 /* Allocated above after the legacy_io struct */
548 b->legacy_mem = b->legacy_io + 1;
549 b->legacy_mem->attr.name = "legacy_mem";
550 b->legacy_mem->size = 1024*1024;
551 b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
552 b->legacy_mem->mmap = pci_mmap_legacy_mem;
553 error = device_create_bin_file(&b->dev, b->legacy_mem);
560 device_remove_bin_file(&b->dev, b->legacy_io);
565 printk(KERN_WARNING "pci: warning: could not create legacy I/O port "
566 "and ISA memory resources to sysfs\n");
570 void pci_remove_legacy_files(struct pci_bus *b)
573 device_remove_bin_file(&b->dev, b->legacy_io);
574 device_remove_bin_file(&b->dev, b->legacy_mem);
575 kfree(b->legacy_io); /* both are allocated here */
578 #endif /* HAVE_PCI_LEGACY */
582 int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma)
584 unsigned long nr, start, size;
586 nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
587 start = vma->vm_pgoff;
588 size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1;
589 if (start < size && size - start >= nr)
591 WARN(1, "process \"%s\" tried to map 0x%08lx-0x%08lx on %s BAR %d (size 0x%08lx)\n",
592 current->comm, start, start+nr, pci_name(pdev), resno, size);
597 * pci_mmap_resource - map a PCI resource into user memory space
598 * @kobj: kobject for mapping
599 * @attr: struct bin_attribute for the file being mapped
600 * @vma: struct vm_area_struct passed into the mmap
601 * @write_combine: 1 for write_combine mapping
603 * Use the regular PCI mapping routines to map a PCI resource into userspace.
606 pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
607 struct vm_area_struct *vma, int write_combine)
609 struct pci_dev *pdev = to_pci_dev(container_of(kobj,
610 struct device, kobj));
611 struct resource *res = (struct resource *)attr->private;
612 enum pci_mmap_state mmap_type;
613 resource_size_t start, end;
616 for (i = 0; i < PCI_ROM_RESOURCE; i++)
617 if (res == &pdev->resource[i])
619 if (i >= PCI_ROM_RESOURCE)
622 if (!pci_mmap_fits(pdev, i, vma))
625 /* pci_mmap_page_range() expects the same kind of entry as coming
626 * from /proc/bus/pci/ which is a "user visible" value. If this is
627 * different from the resource itself, arch will do necessary fixup.
629 pci_resource_to_user(pdev, i, res, &start, &end);
630 vma->vm_pgoff += start >> PAGE_SHIFT;
631 mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
633 if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start))
636 return pci_mmap_page_range(pdev, vma, mmap_type, write_combine);
640 pci_mmap_resource_uc(struct kobject *kobj, struct bin_attribute *attr,
641 struct vm_area_struct *vma)
643 return pci_mmap_resource(kobj, attr, vma, 0);
647 pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr,
648 struct vm_area_struct *vma)
650 return pci_mmap_resource(kobj, attr, vma, 1);
654 * pci_remove_resource_files - cleanup resource files
655 * @dev: dev to cleanup
657 * If we created resource files for @dev, remove them from sysfs and
658 * free their resources.
661 pci_remove_resource_files(struct pci_dev *pdev)
665 for (i = 0; i < PCI_ROM_RESOURCE; i++) {
666 struct bin_attribute *res_attr;
668 res_attr = pdev->res_attr[i];
670 sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
674 res_attr = pdev->res_attr_wc[i];
676 sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
682 static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
684 /* allocate attribute structure, piggyback attribute name */
685 int name_len = write_combine ? 13 : 10;
686 struct bin_attribute *res_attr;
689 res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC);
691 char *res_attr_name = (char *)(res_attr + 1);
694 pdev->res_attr_wc[num] = res_attr;
695 sprintf(res_attr_name, "resource%d_wc", num);
696 res_attr->mmap = pci_mmap_resource_wc;
698 pdev->res_attr[num] = res_attr;
699 sprintf(res_attr_name, "resource%d", num);
700 res_attr->mmap = pci_mmap_resource_uc;
702 res_attr->attr.name = res_attr_name;
703 res_attr->attr.mode = S_IRUSR | S_IWUSR;
704 res_attr->size = pci_resource_len(pdev, num);
705 res_attr->private = &pdev->resource[num];
706 retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
714 * pci_create_resource_files - create resource files in sysfs for @dev
715 * @dev: dev in question
717 * Walk the resources in @dev creating files for each resource available.
719 static int pci_create_resource_files(struct pci_dev *pdev)
724 /* Expose the PCI resources from this device as files */
725 for (i = 0; i < PCI_ROM_RESOURCE; i++) {
727 /* skip empty resources */
728 if (!pci_resource_len(pdev, i))
731 retval = pci_create_attr(pdev, i, 0);
732 /* for prefetchable resources, create a WC mappable file */
733 if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH)
734 retval = pci_create_attr(pdev, i, 1);
737 pci_remove_resource_files(pdev);
743 #else /* !HAVE_PCI_MMAP */
744 static inline int pci_create_resource_files(struct pci_dev *dev) { return 0; }
745 static inline void pci_remove_resource_files(struct pci_dev *dev) { return; }
746 #endif /* HAVE_PCI_MMAP */
749 * pci_write_rom - used to enable access to the PCI ROM display
750 * @kobj: kernel object handle
753 * @count: number of byte in input
755 * writing anything except 0 enables it
758 pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
759 char *buf, loff_t off, size_t count)
761 struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj));
763 if ((off == 0) && (*buf == '0') && (count == 2))
764 pdev->rom_attr_enabled = 0;
766 pdev->rom_attr_enabled = 1;
772 * pci_read_rom - read a PCI ROM
773 * @kobj: kernel object handle
774 * @buf: where to put the data we read from the ROM
776 * @count: number of bytes to read
778 * Put @count bytes starting at @off into @buf from the ROM in the PCI
779 * device corresponding to @kobj.
782 pci_read_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
783 char *buf, loff_t off, size_t count)
785 struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj));
789 if (!pdev->rom_attr_enabled)
792 rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */
799 if (off + count > size)
802 memcpy_fromio(buf, rom + off, count);
804 pci_unmap_rom(pdev, rom);
809 static struct bin_attribute pci_config_attr = {
812 .mode = S_IRUGO | S_IWUSR,
814 .size = PCI_CFG_SPACE_SIZE,
815 .read = pci_read_config,
816 .write = pci_write_config,
819 static struct bin_attribute pcie_config_attr = {
822 .mode = S_IRUGO | S_IWUSR,
824 .size = PCI_CFG_SPACE_EXP_SIZE,
825 .read = pci_read_config,
826 .write = pci_write_config,
829 int __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
834 static int pci_create_capabilities_sysfs(struct pci_dev *dev)
837 struct bin_attribute *attr;
839 /* If the device has VPD, try to expose it in sysfs. */
841 attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
845 attr->size = dev->vpd->len;
846 attr->attr.name = "vpd";
847 attr->attr.mode = S_IRUSR | S_IWUSR;
848 attr->read = pci_read_vpd;
849 attr->write = pci_write_vpd;
850 retval = sysfs_create_bin_file(&dev->dev.kobj, attr);
852 kfree(dev->vpd->attr);
855 dev->vpd->attr = attr;
858 /* Active State Power Management */
859 pcie_aspm_create_sysfs_dev_files(dev);
864 int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
868 struct bin_attribute *attr;
870 if (!sysfs_initialized)
873 if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
874 retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr);
876 retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr);
880 retval = pci_create_resource_files(pdev);
882 goto err_config_file;
884 if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
885 rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
886 else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
889 /* If the device has a ROM, try to expose it in sysfs. */
891 attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
894 goto err_resource_files;
896 attr->size = rom_size;
897 attr->attr.name = "rom";
898 attr->attr.mode = S_IRUSR;
899 attr->read = pci_read_rom;
900 attr->write = pci_write_rom;
901 retval = sysfs_create_bin_file(&pdev->dev.kobj, attr);
904 goto err_resource_files;
906 pdev->rom_attr = attr;
909 /* add platform-specific attributes */
910 retval = pcibios_add_platform_entries(pdev);
914 /* add sysfs entries for various capabilities */
915 retval = pci_create_capabilities_sysfs(pdev);
923 sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
924 kfree(pdev->rom_attr);
925 pdev->rom_attr = NULL;
928 pci_remove_resource_files(pdev);
930 if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
931 sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
933 sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
938 static void pci_remove_capabilities_sysfs(struct pci_dev *dev)
940 if (dev->vpd && dev->vpd->attr) {
941 sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr);
942 kfree(dev->vpd->attr);
945 pcie_aspm_remove_sysfs_dev_files(dev);
949 * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files
950 * @pdev: device whose entries we should free
952 * Cleanup when @pdev is removed from sysfs.
954 void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
958 if (!sysfs_initialized)
961 pci_remove_capabilities_sysfs(pdev);
963 if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
964 sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
966 sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
968 pci_remove_resource_files(pdev);
970 if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
971 rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
972 else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
975 if (rom_size && pdev->rom_attr) {
976 sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
977 kfree(pdev->rom_attr);
981 static int __init pci_sysfs_init(void)
983 struct pci_dev *pdev = NULL;
986 sysfs_initialized = 1;
987 for_each_pci_dev(pdev) {
988 retval = pci_create_sysfs_dev_files(pdev);
998 late_initcall(pci_sysfs_init);