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)
74 const struct cpumask *mask;
77 mask = cpumask_of_pcibus(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)
88 const struct cpumask *mask;
91 mask = cpumask_of_pcibus(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 read_vpd_attr(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));
380 if (off > bin_attr->size)
382 else if (count > bin_attr->size - off)
383 count = bin_attr->size - off;
385 return pci_read_vpd(dev, off, count, buf);
389 write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
390 char *buf, loff_t off, size_t count)
392 struct pci_dev *dev =
393 to_pci_dev(container_of(kobj, struct device, kobj));
395 if (off > bin_attr->size)
397 else if (count > bin_attr->size - off)
398 count = bin_attr->size - off;
400 return pci_write_vpd(dev, off, count, buf);
403 #ifdef HAVE_PCI_LEGACY
405 * pci_read_legacy_io - read byte(s) from legacy I/O port space
406 * @kobj: kobject corresponding to file to read from
407 * @buf: buffer to store results
408 * @off: offset into legacy I/O port space
409 * @count: number of bytes to read
411 * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific
412 * callback routine (pci_legacy_read).
415 pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
416 char *buf, loff_t off, size_t count)
418 struct pci_bus *bus = to_pci_bus(container_of(kobj,
422 /* Only support 1, 2 or 4 byte accesses */
423 if (count != 1 && count != 2 && count != 4)
426 return pci_legacy_read(bus, off, (u32 *)buf, count);
430 * pci_write_legacy_io - write byte(s) to legacy I/O port space
431 * @kobj: kobject corresponding to file to read from
432 * @buf: buffer containing value to be written
433 * @off: offset into legacy I/O port space
434 * @count: number of bytes to write
436 * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific
437 * callback routine (pci_legacy_write).
440 pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
441 char *buf, loff_t off, size_t count)
443 struct pci_bus *bus = to_pci_bus(container_of(kobj,
446 /* Only support 1, 2 or 4 byte accesses */
447 if (count != 1 && count != 2 && count != 4)
450 return pci_legacy_write(bus, off, *(u32 *)buf, count);
454 * pci_mmap_legacy_mem - map legacy PCI memory into user memory space
455 * @kobj: kobject corresponding to device to be mapped
456 * @attr: struct bin_attribute for this file
457 * @vma: struct vm_area_struct passed to mmap
459 * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap
460 * legacy memory space (first meg of bus space) into application virtual
464 pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
465 struct vm_area_struct *vma)
467 struct pci_bus *bus = to_pci_bus(container_of(kobj,
471 return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem);
475 * pci_mmap_legacy_io - map legacy PCI IO into user memory space
476 * @kobj: kobject corresponding to device to be mapped
477 * @attr: struct bin_attribute for this file
478 * @vma: struct vm_area_struct passed to mmap
480 * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap
481 * legacy IO space (first meg of bus space) into application virtual
482 * memory space. Returns -ENOSYS if the operation isn't supported
485 pci_mmap_legacy_io(struct kobject *kobj, struct bin_attribute *attr,
486 struct vm_area_struct *vma)
488 struct pci_bus *bus = to_pci_bus(container_of(kobj,
492 return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io);
496 * pci_create_legacy_files - create legacy I/O port and memory files
497 * @b: bus to create files under
499 * Some platforms allow access to legacy I/O port and ISA memory space on
500 * a per-bus basis. This routine creates the files and ties them into
501 * their associated read, write and mmap files from pci-sysfs.c
503 * On error unwind, but don't propogate the error to the caller
504 * as it is ok to set up the PCI bus without these files.
506 void pci_create_legacy_files(struct pci_bus *b)
510 b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2,
515 b->legacy_io->attr.name = "legacy_io";
516 b->legacy_io->size = 0xffff;
517 b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
518 b->legacy_io->read = pci_read_legacy_io;
519 b->legacy_io->write = pci_write_legacy_io;
520 b->legacy_io->mmap = pci_mmap_legacy_io;
521 error = device_create_bin_file(&b->dev, b->legacy_io);
525 /* Allocated above after the legacy_io struct */
526 b->legacy_mem = b->legacy_io + 1;
527 b->legacy_mem->attr.name = "legacy_mem";
528 b->legacy_mem->size = 1024*1024;
529 b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
530 b->legacy_mem->mmap = pci_mmap_legacy_mem;
531 error = device_create_bin_file(&b->dev, b->legacy_mem);
538 device_remove_bin_file(&b->dev, b->legacy_io);
543 printk(KERN_WARNING "pci: warning: could not create legacy I/O port "
544 "and ISA memory resources to sysfs\n");
548 void pci_remove_legacy_files(struct pci_bus *b)
551 device_remove_bin_file(&b->dev, b->legacy_io);
552 device_remove_bin_file(&b->dev, b->legacy_mem);
553 kfree(b->legacy_io); /* both are allocated here */
556 #endif /* HAVE_PCI_LEGACY */
560 int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma)
562 unsigned long nr, start, size;
564 nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
565 start = vma->vm_pgoff;
566 size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1;
567 if (start < size && size - start >= nr)
569 WARN(1, "process \"%s\" tried to map 0x%08lx-0x%08lx on %s BAR %d (size 0x%08lx)\n",
570 current->comm, start, start+nr, pci_name(pdev), resno, size);
575 * pci_mmap_resource - map a PCI resource into user memory space
576 * @kobj: kobject for mapping
577 * @attr: struct bin_attribute for the file being mapped
578 * @vma: struct vm_area_struct passed into the mmap
579 * @write_combine: 1 for write_combine mapping
581 * Use the regular PCI mapping routines to map a PCI resource into userspace.
584 pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
585 struct vm_area_struct *vma, int write_combine)
587 struct pci_dev *pdev = to_pci_dev(container_of(kobj,
588 struct device, kobj));
589 struct resource *res = (struct resource *)attr->private;
590 enum pci_mmap_state mmap_type;
591 resource_size_t start, end;
594 for (i = 0; i < PCI_ROM_RESOURCE; i++)
595 if (res == &pdev->resource[i])
597 if (i >= PCI_ROM_RESOURCE)
600 if (!pci_mmap_fits(pdev, i, vma))
603 /* pci_mmap_page_range() expects the same kind of entry as coming
604 * from /proc/bus/pci/ which is a "user visible" value. If this is
605 * different from the resource itself, arch will do necessary fixup.
607 pci_resource_to_user(pdev, i, res, &start, &end);
608 vma->vm_pgoff += start >> PAGE_SHIFT;
609 mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
611 if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start))
614 return pci_mmap_page_range(pdev, vma, mmap_type, write_combine);
618 pci_mmap_resource_uc(struct kobject *kobj, struct bin_attribute *attr,
619 struct vm_area_struct *vma)
621 return pci_mmap_resource(kobj, attr, vma, 0);
625 pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr,
626 struct vm_area_struct *vma)
628 return pci_mmap_resource(kobj, attr, vma, 1);
632 * pci_remove_resource_files - cleanup resource files
633 * @dev: dev to cleanup
635 * If we created resource files for @dev, remove them from sysfs and
636 * free their resources.
639 pci_remove_resource_files(struct pci_dev *pdev)
643 for (i = 0; i < PCI_ROM_RESOURCE; i++) {
644 struct bin_attribute *res_attr;
646 res_attr = pdev->res_attr[i];
648 sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
652 res_attr = pdev->res_attr_wc[i];
654 sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
660 static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
662 /* allocate attribute structure, piggyback attribute name */
663 int name_len = write_combine ? 13 : 10;
664 struct bin_attribute *res_attr;
667 res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC);
669 char *res_attr_name = (char *)(res_attr + 1);
672 pdev->res_attr_wc[num] = res_attr;
673 sprintf(res_attr_name, "resource%d_wc", num);
674 res_attr->mmap = pci_mmap_resource_wc;
676 pdev->res_attr[num] = res_attr;
677 sprintf(res_attr_name, "resource%d", num);
678 res_attr->mmap = pci_mmap_resource_uc;
680 res_attr->attr.name = res_attr_name;
681 res_attr->attr.mode = S_IRUSR | S_IWUSR;
682 res_attr->size = pci_resource_len(pdev, num);
683 res_attr->private = &pdev->resource[num];
684 retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
692 * pci_create_resource_files - create resource files in sysfs for @dev
693 * @dev: dev in question
695 * Walk the resources in @dev creating files for each resource available.
697 static int pci_create_resource_files(struct pci_dev *pdev)
702 /* Expose the PCI resources from this device as files */
703 for (i = 0; i < PCI_ROM_RESOURCE; i++) {
705 /* skip empty resources */
706 if (!pci_resource_len(pdev, i))
709 retval = pci_create_attr(pdev, i, 0);
710 /* for prefetchable resources, create a WC mappable file */
711 if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH)
712 retval = pci_create_attr(pdev, i, 1);
715 pci_remove_resource_files(pdev);
721 #else /* !HAVE_PCI_MMAP */
722 static inline int pci_create_resource_files(struct pci_dev *dev) { return 0; }
723 static inline void pci_remove_resource_files(struct pci_dev *dev) { return; }
724 #endif /* HAVE_PCI_MMAP */
727 * pci_write_rom - used to enable access to the PCI ROM display
728 * @kobj: kernel object handle
731 * @count: number of byte in input
733 * writing anything except 0 enables it
736 pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
737 char *buf, loff_t off, size_t count)
739 struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj));
741 if ((off == 0) && (*buf == '0') && (count == 2))
742 pdev->rom_attr_enabled = 0;
744 pdev->rom_attr_enabled = 1;
750 * pci_read_rom - read a PCI ROM
751 * @kobj: kernel object handle
752 * @buf: where to put the data we read from the ROM
754 * @count: number of bytes to read
756 * Put @count bytes starting at @off into @buf from the ROM in the PCI
757 * device corresponding to @kobj.
760 pci_read_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
761 char *buf, loff_t off, size_t count)
763 struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj));
767 if (!pdev->rom_attr_enabled)
770 rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */
777 if (off + count > size)
780 memcpy_fromio(buf, rom + off, count);
782 pci_unmap_rom(pdev, rom);
787 static struct bin_attribute pci_config_attr = {
790 .mode = S_IRUGO | S_IWUSR,
792 .size = PCI_CFG_SPACE_SIZE,
793 .read = pci_read_config,
794 .write = pci_write_config,
797 static struct bin_attribute pcie_config_attr = {
800 .mode = S_IRUGO | S_IWUSR,
802 .size = PCI_CFG_SPACE_EXP_SIZE,
803 .read = pci_read_config,
804 .write = pci_write_config,
807 int __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
812 static int pci_create_capabilities_sysfs(struct pci_dev *dev)
815 struct bin_attribute *attr;
817 /* If the device has VPD, try to expose it in sysfs. */
819 attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
823 attr->size = dev->vpd->len;
824 attr->attr.name = "vpd";
825 attr->attr.mode = S_IRUSR | S_IWUSR;
826 attr->read = read_vpd_attr;
827 attr->write = write_vpd_attr;
828 retval = sysfs_create_bin_file(&dev->dev.kobj, attr);
830 kfree(dev->vpd->attr);
833 dev->vpd->attr = attr;
836 /* Active State Power Management */
837 pcie_aspm_create_sysfs_dev_files(dev);
842 int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
846 struct bin_attribute *attr;
848 if (!sysfs_initialized)
851 if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
852 retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr);
854 retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr);
858 retval = pci_create_resource_files(pdev);
860 goto err_config_file;
862 if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
863 rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
864 else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
867 /* If the device has a ROM, try to expose it in sysfs. */
869 attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
872 goto err_resource_files;
874 attr->size = rom_size;
875 attr->attr.name = "rom";
876 attr->attr.mode = S_IRUSR;
877 attr->read = pci_read_rom;
878 attr->write = pci_write_rom;
879 retval = sysfs_create_bin_file(&pdev->dev.kobj, attr);
882 goto err_resource_files;
884 pdev->rom_attr = attr;
887 /* add platform-specific attributes */
888 retval = pcibios_add_platform_entries(pdev);
892 /* add sysfs entries for various capabilities */
893 retval = pci_create_capabilities_sysfs(pdev);
901 sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
902 kfree(pdev->rom_attr);
903 pdev->rom_attr = NULL;
906 pci_remove_resource_files(pdev);
908 if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
909 sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
911 sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
916 static void pci_remove_capabilities_sysfs(struct pci_dev *dev)
918 if (dev->vpd && dev->vpd->attr) {
919 sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr);
920 kfree(dev->vpd->attr);
923 pcie_aspm_remove_sysfs_dev_files(dev);
927 * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files
928 * @pdev: device whose entries we should free
930 * Cleanup when @pdev is removed from sysfs.
932 void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
936 if (!sysfs_initialized)
939 pci_remove_capabilities_sysfs(pdev);
941 if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
942 sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
944 sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
946 pci_remove_resource_files(pdev);
948 if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
949 rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
950 else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
953 if (rom_size && pdev->rom_attr) {
954 sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
955 kfree(pdev->rom_attr);
959 static int __init pci_sysfs_init(void)
961 struct pci_dev *pdev = NULL;
964 sysfs_initialized = 1;
965 for_each_pci_dev(pdev) {
966 retval = pci_create_sysfs_dev_files(pdev);
976 late_initcall(pci_sysfs_init);