1 // SPDX-License-Identifier: GPL-2.0
3 * (C) Copyright 2002-2004 Greg Kroah-Hartman <greg@kroah.com>
4 * (C) Copyright 2002-2004 IBM Corp.
5 * (C) Copyright 2003 Matthew Wilcox
6 * (C) Copyright 2003 Hewlett-Packard
7 * (C) Copyright 2004 Jon Smirl <jonsmirl@yahoo.com>
8 * (C) Copyright 2004 Silicon Graphics, Inc. Jesse Barnes <jbarnes@sgi.com>
10 * File attributes for PCI devices
12 * Modeled after usb's driverfs.c
15 #include <linux/bitfield.h>
16 #include <linux/kernel.h>
17 #include <linux/sched.h>
18 #include <linux/pci.h>
19 #include <linux/stat.h>
20 #include <linux/export.h>
21 #include <linux/topology.h>
24 #include <linux/capability.h>
25 #include <linux/security.h>
26 #include <linux/slab.h>
27 #include <linux/vgaarb.h>
28 #include <linux/pm_runtime.h>
29 #include <linux/msi.h>
31 #include <linux/aperture.h>
34 static int sysfs_initialized
; /* = 0 */
36 /* show configuration fields */
37 #define pci_config_attr(field, format_string) \
39 field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
41 struct pci_dev *pdev; \
43 pdev = to_pci_dev(dev); \
44 return sysfs_emit(buf, format_string, pdev->field); \
46 static DEVICE_ATTR_RO(field)
48 pci_config_attr(vendor
, "0x%04x\n");
49 pci_config_attr(device
, "0x%04x\n");
50 pci_config_attr(subsystem_vendor
, "0x%04x\n");
51 pci_config_attr(subsystem_device
, "0x%04x\n");
52 pci_config_attr(revision
, "0x%02x\n");
53 pci_config_attr(class, "0x%06x\n");
55 static ssize_t
irq_show(struct device
*dev
,
56 struct device_attribute
*attr
,
59 struct pci_dev
*pdev
= to_pci_dev(dev
);
63 * For MSI, show the first MSI IRQ; for all other cases including
64 * MSI-X, show the legacy INTx IRQ.
66 if (pdev
->msi_enabled
)
67 return sysfs_emit(buf
, "%u\n", pci_irq_vector(pdev
, 0));
70 return sysfs_emit(buf
, "%u\n", pdev
->irq
);
72 static DEVICE_ATTR_RO(irq
);
74 static ssize_t
broken_parity_status_show(struct device
*dev
,
75 struct device_attribute
*attr
,
78 struct pci_dev
*pdev
= to_pci_dev(dev
);
79 return sysfs_emit(buf
, "%u\n", pdev
->broken_parity_status
);
82 static ssize_t
broken_parity_status_store(struct device
*dev
,
83 struct device_attribute
*attr
,
84 const char *buf
, size_t count
)
86 struct pci_dev
*pdev
= to_pci_dev(dev
);
89 if (kstrtoul(buf
, 0, &val
) < 0)
92 pdev
->broken_parity_status
= !!val
;
96 static DEVICE_ATTR_RW(broken_parity_status
);
98 static ssize_t
pci_dev_show_local_cpu(struct device
*dev
, bool list
,
99 struct device_attribute
*attr
, char *buf
)
101 const struct cpumask
*mask
;
104 if (dev_to_node(dev
) == NUMA_NO_NODE
)
105 mask
= cpu_online_mask
;
107 mask
= cpumask_of_node(dev_to_node(dev
));
109 mask
= cpumask_of_pcibus(to_pci_dev(dev
)->bus
);
111 return cpumap_print_to_pagebuf(list
, buf
, mask
);
114 static ssize_t
local_cpus_show(struct device
*dev
,
115 struct device_attribute
*attr
, char *buf
)
117 return pci_dev_show_local_cpu(dev
, false, attr
, buf
);
119 static DEVICE_ATTR_RO(local_cpus
);
121 static ssize_t
local_cpulist_show(struct device
*dev
,
122 struct device_attribute
*attr
, char *buf
)
124 return pci_dev_show_local_cpu(dev
, true, attr
, buf
);
126 static DEVICE_ATTR_RO(local_cpulist
);
129 * PCI Bus Class Devices
131 static ssize_t
cpuaffinity_show(struct device
*dev
,
132 struct device_attribute
*attr
, char *buf
)
134 const struct cpumask
*cpumask
= cpumask_of_pcibus(to_pci_bus(dev
));
136 return cpumap_print_to_pagebuf(false, buf
, cpumask
);
138 static DEVICE_ATTR_RO(cpuaffinity
);
140 static ssize_t
cpulistaffinity_show(struct device
*dev
,
141 struct device_attribute
*attr
, char *buf
)
143 const struct cpumask
*cpumask
= cpumask_of_pcibus(to_pci_bus(dev
));
145 return cpumap_print_to_pagebuf(true, buf
, cpumask
);
147 static DEVICE_ATTR_RO(cpulistaffinity
);
149 static ssize_t
power_state_show(struct device
*dev
,
150 struct device_attribute
*attr
, char *buf
)
152 struct pci_dev
*pdev
= to_pci_dev(dev
);
154 return sysfs_emit(buf
, "%s\n", pci_power_name(pdev
->current_state
));
156 static DEVICE_ATTR_RO(power_state
);
159 static ssize_t
resource_show(struct device
*dev
, struct device_attribute
*attr
,
162 struct pci_dev
*pci_dev
= to_pci_dev(dev
);
165 resource_size_t start
, end
;
168 if (pci_dev
->subordinate
)
169 max
= DEVICE_COUNT_RESOURCE
;
171 max
= PCI_BRIDGE_RESOURCES
;
173 for (i
= 0; i
< max
; i
++) {
174 struct resource
*res
= &pci_dev
->resource
[i
];
175 pci_resource_to_user(pci_dev
, i
, res
, &start
, &end
);
176 len
+= sysfs_emit_at(buf
, len
, "0x%016llx 0x%016llx 0x%016llx\n",
177 (unsigned long long)start
,
178 (unsigned long long)end
,
179 (unsigned long long)res
->flags
);
183 static DEVICE_ATTR_RO(resource
);
185 static ssize_t
max_link_speed_show(struct device
*dev
,
186 struct device_attribute
*attr
, char *buf
)
188 struct pci_dev
*pdev
= to_pci_dev(dev
);
190 return sysfs_emit(buf
, "%s\n",
191 pci_speed_string(pcie_get_speed_cap(pdev
)));
193 static DEVICE_ATTR_RO(max_link_speed
);
195 static ssize_t
max_link_width_show(struct device
*dev
,
196 struct device_attribute
*attr
, char *buf
)
198 struct pci_dev
*pdev
= to_pci_dev(dev
);
200 return sysfs_emit(buf
, "%u\n", pcie_get_width_cap(pdev
));
202 static DEVICE_ATTR_RO(max_link_width
);
204 static ssize_t
current_link_speed_show(struct device
*dev
,
205 struct device_attribute
*attr
, char *buf
)
207 struct pci_dev
*pci_dev
= to_pci_dev(dev
);
210 enum pci_bus_speed speed
;
212 err
= pcie_capability_read_word(pci_dev
, PCI_EXP_LNKSTA
, &linkstat
);
216 speed
= pcie_link_speed
[linkstat
& PCI_EXP_LNKSTA_CLS
];
218 return sysfs_emit(buf
, "%s\n", pci_speed_string(speed
));
220 static DEVICE_ATTR_RO(current_link_speed
);
222 static ssize_t
current_link_width_show(struct device
*dev
,
223 struct device_attribute
*attr
, char *buf
)
225 struct pci_dev
*pci_dev
= to_pci_dev(dev
);
229 err
= pcie_capability_read_word(pci_dev
, PCI_EXP_LNKSTA
, &linkstat
);
233 return sysfs_emit(buf
, "%u\n", FIELD_GET(PCI_EXP_LNKSTA_NLW
, linkstat
));
235 static DEVICE_ATTR_RO(current_link_width
);
237 static ssize_t
secondary_bus_number_show(struct device
*dev
,
238 struct device_attribute
*attr
,
241 struct pci_dev
*pci_dev
= to_pci_dev(dev
);
245 err
= pci_read_config_byte(pci_dev
, PCI_SECONDARY_BUS
, &sec_bus
);
249 return sysfs_emit(buf
, "%u\n", sec_bus
);
251 static DEVICE_ATTR_RO(secondary_bus_number
);
253 static ssize_t
subordinate_bus_number_show(struct device
*dev
,
254 struct device_attribute
*attr
,
257 struct pci_dev
*pci_dev
= to_pci_dev(dev
);
261 err
= pci_read_config_byte(pci_dev
, PCI_SUBORDINATE_BUS
, &sub_bus
);
265 return sysfs_emit(buf
, "%u\n", sub_bus
);
267 static DEVICE_ATTR_RO(subordinate_bus_number
);
269 static ssize_t
ari_enabled_show(struct device
*dev
,
270 struct device_attribute
*attr
,
273 struct pci_dev
*pci_dev
= to_pci_dev(dev
);
275 return sysfs_emit(buf
, "%u\n", pci_ari_enabled(pci_dev
->bus
));
277 static DEVICE_ATTR_RO(ari_enabled
);
279 static ssize_t
modalias_show(struct device
*dev
, struct device_attribute
*attr
,
282 struct pci_dev
*pci_dev
= to_pci_dev(dev
);
284 return sysfs_emit(buf
, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02X\n",
285 pci_dev
->vendor
, pci_dev
->device
,
286 pci_dev
->subsystem_vendor
, pci_dev
->subsystem_device
,
287 (u8
)(pci_dev
->class >> 16), (u8
)(pci_dev
->class >> 8),
288 (u8
)(pci_dev
->class));
290 static DEVICE_ATTR_RO(modalias
);
292 static ssize_t
enable_store(struct device
*dev
, struct device_attribute
*attr
,
293 const char *buf
, size_t count
)
295 struct pci_dev
*pdev
= to_pci_dev(dev
);
299 /* this can crash the machine when done on the "wrong" device */
300 if (!capable(CAP_SYS_ADMIN
))
303 if (kstrtoul(buf
, 0, &val
) < 0)
310 result
= pci_enable_device(pdev
);
311 else if (pci_is_enabled(pdev
))
312 pci_disable_device(pdev
);
317 return result
< 0 ? result
: count
;
320 static ssize_t
enable_show(struct device
*dev
, struct device_attribute
*attr
,
323 struct pci_dev
*pdev
;
325 pdev
= to_pci_dev(dev
);
326 return sysfs_emit(buf
, "%u\n", atomic_read(&pdev
->enable_cnt
));
328 static DEVICE_ATTR_RW(enable
);
331 static ssize_t
numa_node_store(struct device
*dev
,
332 struct device_attribute
*attr
, const char *buf
,
335 struct pci_dev
*pdev
= to_pci_dev(dev
);
338 if (!capable(CAP_SYS_ADMIN
))
341 if (kstrtoint(buf
, 0, &node
) < 0)
344 if ((node
< 0 && node
!= NUMA_NO_NODE
) || node
>= MAX_NUMNODES
)
347 if (node
!= NUMA_NO_NODE
&& !node_online(node
))
350 add_taint(TAINT_FIRMWARE_WORKAROUND
, LOCKDEP_STILL_OK
);
351 pci_alert(pdev
, FW_BUG
"Overriding NUMA node to %d. Contact your vendor for updates.",
354 dev
->numa_node
= node
;
358 static ssize_t
numa_node_show(struct device
*dev
, struct device_attribute
*attr
,
361 return sysfs_emit(buf
, "%d\n", dev
->numa_node
);
363 static DEVICE_ATTR_RW(numa_node
);
366 static ssize_t
dma_mask_bits_show(struct device
*dev
,
367 struct device_attribute
*attr
, char *buf
)
369 struct pci_dev
*pdev
= to_pci_dev(dev
);
371 return sysfs_emit(buf
, "%d\n", fls64(pdev
->dma_mask
));
373 static DEVICE_ATTR_RO(dma_mask_bits
);
375 static ssize_t
consistent_dma_mask_bits_show(struct device
*dev
,
376 struct device_attribute
*attr
,
379 return sysfs_emit(buf
, "%d\n", fls64(dev
->coherent_dma_mask
));
381 static DEVICE_ATTR_RO(consistent_dma_mask_bits
);
383 static ssize_t
msi_bus_show(struct device
*dev
, struct device_attribute
*attr
,
386 struct pci_dev
*pdev
= to_pci_dev(dev
);
387 struct pci_bus
*subordinate
= pdev
->subordinate
;
389 return sysfs_emit(buf
, "%u\n", subordinate
?
390 !(subordinate
->bus_flags
& PCI_BUS_FLAGS_NO_MSI
)
394 static ssize_t
msi_bus_store(struct device
*dev
, struct device_attribute
*attr
,
395 const char *buf
, size_t count
)
397 struct pci_dev
*pdev
= to_pci_dev(dev
);
398 struct pci_bus
*subordinate
= pdev
->subordinate
;
401 if (!capable(CAP_SYS_ADMIN
))
404 if (kstrtoul(buf
, 0, &val
) < 0)
408 * "no_msi" and "bus_flags" only affect what happens when a driver
409 * requests MSI or MSI-X. They don't affect any drivers that have
410 * already requested MSI or MSI-X.
414 pci_info(pdev
, "MSI/MSI-X %s for future drivers\n",
415 val
? "allowed" : "disallowed");
420 subordinate
->bus_flags
&= ~PCI_BUS_FLAGS_NO_MSI
;
422 subordinate
->bus_flags
|= PCI_BUS_FLAGS_NO_MSI
;
424 dev_info(&subordinate
->dev
, "MSI/MSI-X %s for future drivers of devices on this bus\n",
425 val
? "allowed" : "disallowed");
428 static DEVICE_ATTR_RW(msi_bus
);
430 static ssize_t
rescan_store(const struct bus_type
*bus
, const char *buf
, size_t count
)
433 struct pci_bus
*b
= NULL
;
435 if (kstrtoul(buf
, 0, &val
) < 0)
439 pci_lock_rescan_remove();
440 while ((b
= pci_find_next_bus(b
)) != NULL
)
442 pci_unlock_rescan_remove();
446 static BUS_ATTR_WO(rescan
);
448 static struct attribute
*pci_bus_attrs
[] = {
449 &bus_attr_rescan
.attr
,
453 static const struct attribute_group pci_bus_group
= {
454 .attrs
= pci_bus_attrs
,
457 const struct attribute_group
*pci_bus_groups
[] = {
462 static ssize_t
dev_rescan_store(struct device
*dev
,
463 struct device_attribute
*attr
, const char *buf
,
467 struct pci_dev
*pdev
= to_pci_dev(dev
);
469 if (kstrtoul(buf
, 0, &val
) < 0)
473 pci_lock_rescan_remove();
474 pci_rescan_bus(pdev
->bus
);
475 pci_unlock_rescan_remove();
479 static struct device_attribute dev_attr_dev_rescan
= __ATTR(rescan
, 0200, NULL
,
482 static ssize_t
remove_store(struct device
*dev
, struct device_attribute
*attr
,
483 const char *buf
, size_t count
)
487 if (kstrtoul(buf
, 0, &val
) < 0)
490 if (val
&& device_remove_file_self(dev
, attr
))
491 pci_stop_and_remove_bus_device_locked(to_pci_dev(dev
));
494 static DEVICE_ATTR_IGNORE_LOCKDEP(remove
, 0220, NULL
,
497 static ssize_t
bus_rescan_store(struct device
*dev
,
498 struct device_attribute
*attr
,
499 const char *buf
, size_t count
)
502 struct pci_bus
*bus
= to_pci_bus(dev
);
504 if (kstrtoul(buf
, 0, &val
) < 0)
508 pci_lock_rescan_remove();
509 if (!pci_is_root_bus(bus
) && list_empty(&bus
->devices
))
510 pci_rescan_bus_bridge_resize(bus
->self
);
513 pci_unlock_rescan_remove();
517 static struct device_attribute dev_attr_bus_rescan
= __ATTR(rescan
, 0200, NULL
,
520 #if defined(CONFIG_PM) && defined(CONFIG_ACPI)
521 static ssize_t
d3cold_allowed_store(struct device
*dev
,
522 struct device_attribute
*attr
,
523 const char *buf
, size_t count
)
525 struct pci_dev
*pdev
= to_pci_dev(dev
);
528 if (kstrtoul(buf
, 0, &val
) < 0)
531 pdev
->d3cold_allowed
= !!val
;
532 pci_bridge_d3_update(pdev
);
534 pm_runtime_resume(dev
);
539 static ssize_t
d3cold_allowed_show(struct device
*dev
,
540 struct device_attribute
*attr
, char *buf
)
542 struct pci_dev
*pdev
= to_pci_dev(dev
);
543 return sysfs_emit(buf
, "%u\n", pdev
->d3cold_allowed
);
545 static DEVICE_ATTR_RW(d3cold_allowed
);
549 static ssize_t
devspec_show(struct device
*dev
,
550 struct device_attribute
*attr
, char *buf
)
552 struct pci_dev
*pdev
= to_pci_dev(dev
);
553 struct device_node
*np
= pci_device_to_OF_node(pdev
);
557 return sysfs_emit(buf
, "%pOF\n", np
);
559 static DEVICE_ATTR_RO(devspec
);
562 static ssize_t
driver_override_store(struct device
*dev
,
563 struct device_attribute
*attr
,
564 const char *buf
, size_t count
)
566 struct pci_dev
*pdev
= to_pci_dev(dev
);
569 ret
= driver_set_override(dev
, &pdev
->driver_override
, buf
, count
);
576 static ssize_t
driver_override_show(struct device
*dev
,
577 struct device_attribute
*attr
, char *buf
)
579 struct pci_dev
*pdev
= to_pci_dev(dev
);
583 len
= sysfs_emit(buf
, "%s\n", pdev
->driver_override
);
587 static DEVICE_ATTR_RW(driver_override
);
589 static struct attribute
*pci_dev_attrs
[] = {
590 &dev_attr_power_state
.attr
,
591 &dev_attr_resource
.attr
,
592 &dev_attr_vendor
.attr
,
593 &dev_attr_device
.attr
,
594 &dev_attr_subsystem_vendor
.attr
,
595 &dev_attr_subsystem_device
.attr
,
596 &dev_attr_revision
.attr
,
597 &dev_attr_class
.attr
,
599 &dev_attr_local_cpus
.attr
,
600 &dev_attr_local_cpulist
.attr
,
601 &dev_attr_modalias
.attr
,
603 &dev_attr_numa_node
.attr
,
605 &dev_attr_dma_mask_bits
.attr
,
606 &dev_attr_consistent_dma_mask_bits
.attr
,
607 &dev_attr_enable
.attr
,
608 &dev_attr_broken_parity_status
.attr
,
609 &dev_attr_msi_bus
.attr
,
610 #if defined(CONFIG_PM) && defined(CONFIG_ACPI)
611 &dev_attr_d3cold_allowed
.attr
,
614 &dev_attr_devspec
.attr
,
616 &dev_attr_driver_override
.attr
,
617 &dev_attr_ari_enabled
.attr
,
621 static struct attribute
*pci_bridge_attrs
[] = {
622 &dev_attr_subordinate_bus_number
.attr
,
623 &dev_attr_secondary_bus_number
.attr
,
627 static struct attribute
*pcie_dev_attrs
[] = {
628 &dev_attr_current_link_speed
.attr
,
629 &dev_attr_current_link_width
.attr
,
630 &dev_attr_max_link_width
.attr
,
631 &dev_attr_max_link_speed
.attr
,
635 static struct attribute
*pcibus_attrs
[] = {
636 &dev_attr_bus_rescan
.attr
,
637 &dev_attr_cpuaffinity
.attr
,
638 &dev_attr_cpulistaffinity
.attr
,
642 static const struct attribute_group pcibus_group
= {
643 .attrs
= pcibus_attrs
,
646 const struct attribute_group
*pcibus_groups
[] = {
651 static ssize_t
boot_vga_show(struct device
*dev
, struct device_attribute
*attr
,
654 struct pci_dev
*pdev
= to_pci_dev(dev
);
655 struct pci_dev
*vga_dev
= vga_default_device();
658 return sysfs_emit(buf
, "%u\n", (pdev
== vga_dev
));
660 return sysfs_emit(buf
, "%u\n",
661 !!(pdev
->resource
[PCI_ROM_RESOURCE
].flags
&
662 IORESOURCE_ROM_SHADOW
));
664 static DEVICE_ATTR_RO(boot_vga
);
666 static ssize_t
pci_read_config(struct file
*filp
, struct kobject
*kobj
,
667 struct bin_attribute
*bin_attr
, char *buf
,
668 loff_t off
, size_t count
)
670 struct pci_dev
*dev
= to_pci_dev(kobj_to_dev(kobj
));
671 unsigned int size
= 64;
672 loff_t init_off
= off
;
673 u8
*data
= (u8
*) buf
;
675 /* Several chips lock up trying to read undefined config space */
676 if (file_ns_capable(filp
, &init_user_ns
, CAP_SYS_ADMIN
))
677 size
= dev
->cfg_size
;
678 else if (dev
->hdr_type
== PCI_HEADER_TYPE_CARDBUS
)
683 if (off
+ count
> size
) {
690 pci_config_pm_runtime_get(dev
);
692 if ((off
& 1) && size
) {
694 pci_user_read_config_byte(dev
, off
, &val
);
695 data
[off
- init_off
] = val
;
700 if ((off
& 3) && size
> 2) {
702 pci_user_read_config_word(dev
, off
, &val
);
703 data
[off
- init_off
] = val
& 0xff;
704 data
[off
- init_off
+ 1] = (val
>> 8) & 0xff;
711 pci_user_read_config_dword(dev
, off
, &val
);
712 data
[off
- init_off
] = val
& 0xff;
713 data
[off
- init_off
+ 1] = (val
>> 8) & 0xff;
714 data
[off
- init_off
+ 2] = (val
>> 16) & 0xff;
715 data
[off
- init_off
+ 3] = (val
>> 24) & 0xff;
723 pci_user_read_config_word(dev
, off
, &val
);
724 data
[off
- init_off
] = val
& 0xff;
725 data
[off
- init_off
+ 1] = (val
>> 8) & 0xff;
732 pci_user_read_config_byte(dev
, off
, &val
);
733 data
[off
- init_off
] = val
;
736 pci_config_pm_runtime_put(dev
);
741 static ssize_t
pci_write_config(struct file
*filp
, struct kobject
*kobj
,
742 struct bin_attribute
*bin_attr
, char *buf
,
743 loff_t off
, size_t count
)
745 struct pci_dev
*dev
= to_pci_dev(kobj_to_dev(kobj
));
746 unsigned int size
= count
;
747 loff_t init_off
= off
;
748 u8
*data
= (u8
*) buf
;
751 ret
= security_locked_down(LOCKDOWN_PCI_ACCESS
);
755 if (resource_is_exclusive(&dev
->driver_exclusive_resource
, off
,
757 pci_warn_once(dev
, "%s: Unexpected write to kernel-exclusive config offset %llx",
759 add_taint(TAINT_USER
, LOCKDEP_STILL_OK
);
762 if (off
> dev
->cfg_size
)
764 if (off
+ count
> dev
->cfg_size
) {
765 size
= dev
->cfg_size
- off
;
769 pci_config_pm_runtime_get(dev
);
771 if ((off
& 1) && size
) {
772 pci_user_write_config_byte(dev
, off
, data
[off
- init_off
]);
777 if ((off
& 3) && size
> 2) {
778 u16 val
= data
[off
- init_off
];
779 val
|= (u16
) data
[off
- init_off
+ 1] << 8;
780 pci_user_write_config_word(dev
, off
, val
);
786 u32 val
= data
[off
- init_off
];
787 val
|= (u32
) data
[off
- init_off
+ 1] << 8;
788 val
|= (u32
) data
[off
- init_off
+ 2] << 16;
789 val
|= (u32
) data
[off
- init_off
+ 3] << 24;
790 pci_user_write_config_dword(dev
, off
, val
);
796 u16 val
= data
[off
- init_off
];
797 val
|= (u16
) data
[off
- init_off
+ 1] << 8;
798 pci_user_write_config_word(dev
, off
, val
);
804 pci_user_write_config_byte(dev
, off
, data
[off
- init_off
]);
806 pci_config_pm_runtime_put(dev
);
810 static BIN_ATTR(config
, 0644, pci_read_config
, pci_write_config
, 0);
812 static struct bin_attribute
*pci_dev_config_attrs
[] = {
817 static umode_t
pci_dev_config_attr_is_visible(struct kobject
*kobj
,
818 struct bin_attribute
*a
, int n
)
820 struct pci_dev
*pdev
= to_pci_dev(kobj_to_dev(kobj
));
822 a
->size
= PCI_CFG_SPACE_SIZE
;
823 if (pdev
->cfg_size
> PCI_CFG_SPACE_SIZE
)
824 a
->size
= PCI_CFG_SPACE_EXP_SIZE
;
829 static const struct attribute_group pci_dev_config_attr_group
= {
830 .bin_attrs
= pci_dev_config_attrs
,
831 .is_bin_visible
= pci_dev_config_attr_is_visible
,
835 * llseek operation for mmappable PCI resources.
836 * May be left unused if the arch doesn't provide them.
838 static __maybe_unused loff_t
839 pci_llseek_resource(struct file
*filep
,
840 struct kobject
*kobj __always_unused
,
841 struct bin_attribute
*attr
,
842 loff_t offset
, int whence
)
844 return fixed_size_llseek(filep
, offset
, whence
, attr
->size
);
847 #ifdef HAVE_PCI_LEGACY
849 * pci_read_legacy_io - read byte(s) from legacy I/O port space
850 * @filp: open sysfs file
851 * @kobj: kobject corresponding to file to read from
852 * @bin_attr: struct bin_attribute for this file
853 * @buf: buffer to store results
854 * @off: offset into legacy I/O port space
855 * @count: number of bytes to read
857 * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific
858 * callback routine (pci_legacy_read).
860 static ssize_t
pci_read_legacy_io(struct file
*filp
, struct kobject
*kobj
,
861 struct bin_attribute
*bin_attr
, char *buf
,
862 loff_t off
, size_t count
)
864 struct pci_bus
*bus
= to_pci_bus(kobj_to_dev(kobj
));
866 /* Only support 1, 2 or 4 byte accesses */
867 if (count
!= 1 && count
!= 2 && count
!= 4)
870 return pci_legacy_read(bus
, off
, (u32
*)buf
, count
);
874 * pci_write_legacy_io - write byte(s) to legacy I/O port space
875 * @filp: open sysfs file
876 * @kobj: kobject corresponding to file to read from
877 * @bin_attr: struct bin_attribute for this file
878 * @buf: buffer containing value to be written
879 * @off: offset into legacy I/O port space
880 * @count: number of bytes to write
882 * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific
883 * callback routine (pci_legacy_write).
885 static ssize_t
pci_write_legacy_io(struct file
*filp
, struct kobject
*kobj
,
886 struct bin_attribute
*bin_attr
, char *buf
,
887 loff_t off
, size_t count
)
889 struct pci_bus
*bus
= to_pci_bus(kobj_to_dev(kobj
));
891 /* Only support 1, 2 or 4 byte accesses */
892 if (count
!= 1 && count
!= 2 && count
!= 4)
895 return pci_legacy_write(bus
, off
, *(u32
*)buf
, count
);
899 * pci_mmap_legacy_mem - map legacy PCI memory into user memory space
900 * @filp: open sysfs file
901 * @kobj: kobject corresponding to device to be mapped
902 * @attr: struct bin_attribute for this file
903 * @vma: struct vm_area_struct passed to mmap
905 * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap
906 * legacy memory space (first meg of bus space) into application virtual
909 static int pci_mmap_legacy_mem(struct file
*filp
, struct kobject
*kobj
,
910 struct bin_attribute
*attr
,
911 struct vm_area_struct
*vma
)
913 struct pci_bus
*bus
= to_pci_bus(kobj_to_dev(kobj
));
915 return pci_mmap_legacy_page_range(bus
, vma
, pci_mmap_mem
);
919 * pci_mmap_legacy_io - map legacy PCI IO into user memory space
920 * @filp: open sysfs file
921 * @kobj: kobject corresponding to device to be mapped
922 * @attr: struct bin_attribute for this file
923 * @vma: struct vm_area_struct passed to mmap
925 * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap
926 * legacy IO space (first meg of bus space) into application virtual
927 * memory space. Returns -ENOSYS if the operation isn't supported
929 static int pci_mmap_legacy_io(struct file
*filp
, struct kobject
*kobj
,
930 struct bin_attribute
*attr
,
931 struct vm_area_struct
*vma
)
933 struct pci_bus
*bus
= to_pci_bus(kobj_to_dev(kobj
));
935 return pci_mmap_legacy_page_range(bus
, vma
, pci_mmap_io
);
939 * pci_adjust_legacy_attr - adjustment of legacy file attributes
940 * @b: bus to create files under
941 * @mmap_type: I/O port or memory
943 * Stub implementation. Can be overridden by arch if necessary.
945 void __weak
pci_adjust_legacy_attr(struct pci_bus
*b
,
946 enum pci_mmap_state mmap_type
)
951 * pci_create_legacy_files - create legacy I/O port and memory files
952 * @b: bus to create files under
954 * Some platforms allow access to legacy I/O port and ISA memory space on
955 * a per-bus basis. This routine creates the files and ties them into
956 * their associated read, write and mmap files from pci-sysfs.c
958 * On error unwind, but don't propagate the error to the caller
959 * as it is ok to set up the PCI bus without these files.
961 void pci_create_legacy_files(struct pci_bus
*b
)
965 if (!sysfs_initialized
)
968 b
->legacy_io
= kcalloc(2, sizeof(struct bin_attribute
),
973 sysfs_bin_attr_init(b
->legacy_io
);
974 b
->legacy_io
->attr
.name
= "legacy_io";
975 b
->legacy_io
->size
= 0xffff;
976 b
->legacy_io
->attr
.mode
= 0600;
977 b
->legacy_io
->read
= pci_read_legacy_io
;
978 b
->legacy_io
->write
= pci_write_legacy_io
;
979 /* See pci_create_attr() for motivation */
980 b
->legacy_io
->llseek
= pci_llseek_resource
;
981 b
->legacy_io
->mmap
= pci_mmap_legacy_io
;
982 b
->legacy_io
->f_mapping
= iomem_get_mapping
;
983 pci_adjust_legacy_attr(b
, pci_mmap_io
);
984 error
= device_create_bin_file(&b
->dev
, b
->legacy_io
);
988 /* Allocated above after the legacy_io struct */
989 b
->legacy_mem
= b
->legacy_io
+ 1;
990 sysfs_bin_attr_init(b
->legacy_mem
);
991 b
->legacy_mem
->attr
.name
= "legacy_mem";
992 b
->legacy_mem
->size
= 1024*1024;
993 b
->legacy_mem
->attr
.mode
= 0600;
994 b
->legacy_mem
->mmap
= pci_mmap_legacy_mem
;
995 /* See pci_create_attr() for motivation */
996 b
->legacy_mem
->llseek
= pci_llseek_resource
;
997 b
->legacy_mem
->f_mapping
= iomem_get_mapping
;
998 pci_adjust_legacy_attr(b
, pci_mmap_mem
);
999 error
= device_create_bin_file(&b
->dev
, b
->legacy_mem
);
1001 goto legacy_mem_err
;
1006 device_remove_bin_file(&b
->dev
, b
->legacy_io
);
1008 kfree(b
->legacy_io
);
1009 b
->legacy_io
= NULL
;
1011 dev_warn(&b
->dev
, "could not create legacy I/O port and ISA memory resources in sysfs\n");
1014 void pci_remove_legacy_files(struct pci_bus
*b
)
1017 device_remove_bin_file(&b
->dev
, b
->legacy_io
);
1018 device_remove_bin_file(&b
->dev
, b
->legacy_mem
);
1019 kfree(b
->legacy_io
); /* both are allocated here */
1022 #endif /* HAVE_PCI_LEGACY */
1024 #if defined(HAVE_PCI_MMAP) || defined(ARCH_GENERIC_PCI_MMAP_RESOURCE)
1026 * pci_mmap_resource - map a PCI resource into user memory space
1027 * @kobj: kobject for mapping
1028 * @attr: struct bin_attribute for the file being mapped
1029 * @vma: struct vm_area_struct passed into the mmap
1030 * @write_combine: 1 for write_combine mapping
1032 * Use the regular PCI mapping routines to map a PCI resource into userspace.
1034 static int pci_mmap_resource(struct kobject
*kobj
, struct bin_attribute
*attr
,
1035 struct vm_area_struct
*vma
, int write_combine
)
1037 struct pci_dev
*pdev
= to_pci_dev(kobj_to_dev(kobj
));
1038 int bar
= (unsigned long)attr
->private;
1039 enum pci_mmap_state mmap_type
;
1040 struct resource
*res
= &pdev
->resource
[bar
];
1043 ret
= security_locked_down(LOCKDOWN_PCI_ACCESS
);
1047 if (res
->flags
& IORESOURCE_MEM
&& iomem_is_exclusive(res
->start
))
1050 if (!pci_mmap_fits(pdev
, bar
, vma
, PCI_MMAP_SYSFS
))
1053 mmap_type
= res
->flags
& IORESOURCE_MEM
? pci_mmap_mem
: pci_mmap_io
;
1055 return pci_mmap_resource_range(pdev
, bar
, vma
, mmap_type
, write_combine
);
1058 static int pci_mmap_resource_uc(struct file
*filp
, struct kobject
*kobj
,
1059 struct bin_attribute
*attr
,
1060 struct vm_area_struct
*vma
)
1062 return pci_mmap_resource(kobj
, attr
, vma
, 0);
1065 static int pci_mmap_resource_wc(struct file
*filp
, struct kobject
*kobj
,
1066 struct bin_attribute
*attr
,
1067 struct vm_area_struct
*vma
)
1069 return pci_mmap_resource(kobj
, attr
, vma
, 1);
1072 static ssize_t
pci_resource_io(struct file
*filp
, struct kobject
*kobj
,
1073 struct bin_attribute
*attr
, char *buf
,
1074 loff_t off
, size_t count
, bool write
)
1076 #ifdef CONFIG_HAS_IOPORT
1077 struct pci_dev
*pdev
= to_pci_dev(kobj_to_dev(kobj
));
1078 int bar
= (unsigned long)attr
->private;
1079 unsigned long port
= off
;
1081 port
+= pci_resource_start(pdev
, bar
);
1083 if (port
> pci_resource_end(pdev
, bar
))
1086 if (port
+ count
- 1 > pci_resource_end(pdev
, bar
))
1092 outb(*(u8
*)buf
, port
);
1094 *(u8
*)buf
= inb(port
);
1098 outw(*(u16
*)buf
, port
);
1100 *(u16
*)buf
= inw(port
);
1104 outl(*(u32
*)buf
, port
);
1106 *(u32
*)buf
= inl(port
);
1115 static ssize_t
pci_read_resource_io(struct file
*filp
, struct kobject
*kobj
,
1116 struct bin_attribute
*attr
, char *buf
,
1117 loff_t off
, size_t count
)
1119 return pci_resource_io(filp
, kobj
, attr
, buf
, off
, count
, false);
1122 static ssize_t
pci_write_resource_io(struct file
*filp
, struct kobject
*kobj
,
1123 struct bin_attribute
*attr
, char *buf
,
1124 loff_t off
, size_t count
)
1128 ret
= security_locked_down(LOCKDOWN_PCI_ACCESS
);
1132 return pci_resource_io(filp
, kobj
, attr
, buf
, off
, count
, true);
1136 * pci_remove_resource_files - cleanup resource files
1137 * @pdev: dev to cleanup
1139 * If we created resource files for @pdev, remove them from sysfs and
1140 * free their resources.
1142 static void pci_remove_resource_files(struct pci_dev
*pdev
)
1146 for (i
= 0; i
< PCI_STD_NUM_BARS
; i
++) {
1147 struct bin_attribute
*res_attr
;
1149 res_attr
= pdev
->res_attr
[i
];
1151 sysfs_remove_bin_file(&pdev
->dev
.kobj
, res_attr
);
1155 res_attr
= pdev
->res_attr_wc
[i
];
1157 sysfs_remove_bin_file(&pdev
->dev
.kobj
, res_attr
);
1163 static int pci_create_attr(struct pci_dev
*pdev
, int num
, int write_combine
)
1165 /* allocate attribute structure, piggyback attribute name */
1166 int name_len
= write_combine
? 13 : 10;
1167 struct bin_attribute
*res_attr
;
1168 char *res_attr_name
;
1171 res_attr
= kzalloc(sizeof(*res_attr
) + name_len
, GFP_ATOMIC
);
1175 res_attr_name
= (char *)(res_attr
+ 1);
1177 sysfs_bin_attr_init(res_attr
);
1178 if (write_combine
) {
1179 sprintf(res_attr_name
, "resource%d_wc", num
);
1180 res_attr
->mmap
= pci_mmap_resource_wc
;
1182 sprintf(res_attr_name
, "resource%d", num
);
1183 if (pci_resource_flags(pdev
, num
) & IORESOURCE_IO
) {
1184 res_attr
->read
= pci_read_resource_io
;
1185 res_attr
->write
= pci_write_resource_io
;
1186 if (arch_can_pci_mmap_io())
1187 res_attr
->mmap
= pci_mmap_resource_uc
;
1189 res_attr
->mmap
= pci_mmap_resource_uc
;
1192 if (res_attr
->mmap
) {
1193 res_attr
->f_mapping
= iomem_get_mapping
;
1195 * generic_file_llseek() consults f_mapping->host to determine
1196 * the file size. As iomem_inode knows nothing about the
1197 * attribute, it's not going to work, so override it as well.
1199 res_attr
->llseek
= pci_llseek_resource
;
1201 res_attr
->attr
.name
= res_attr_name
;
1202 res_attr
->attr
.mode
= 0600;
1203 res_attr
->size
= pci_resource_len(pdev
, num
);
1204 res_attr
->private = (void *)(unsigned long)num
;
1205 retval
= sysfs_create_bin_file(&pdev
->dev
.kobj
, res_attr
);
1212 pdev
->res_attr_wc
[num
] = res_attr
;
1214 pdev
->res_attr
[num
] = res_attr
;
1220 * pci_create_resource_files - create resource files in sysfs for @dev
1221 * @pdev: dev in question
1223 * Walk the resources in @pdev creating files for each resource available.
1225 static int pci_create_resource_files(struct pci_dev
*pdev
)
1230 /* Expose the PCI resources from this device as files */
1231 for (i
= 0; i
< PCI_STD_NUM_BARS
; i
++) {
1233 /* skip empty resources */
1234 if (!pci_resource_len(pdev
, i
))
1237 retval
= pci_create_attr(pdev
, i
, 0);
1238 /* for prefetchable resources, create a WC mappable file */
1239 if (!retval
&& arch_can_pci_mmap_wc() &&
1240 pdev
->resource
[i
].flags
& IORESOURCE_PREFETCH
)
1241 retval
= pci_create_attr(pdev
, i
, 1);
1243 pci_remove_resource_files(pdev
);
1249 #else /* !(defined(HAVE_PCI_MMAP) || defined(ARCH_GENERIC_PCI_MMAP_RESOURCE)) */
1250 int __weak
pci_create_resource_files(struct pci_dev
*dev
) { return 0; }
1251 void __weak
pci_remove_resource_files(struct pci_dev
*dev
) { return; }
1255 * pci_write_rom - used to enable access to the PCI ROM display
1257 * @kobj: kernel object handle
1258 * @bin_attr: struct bin_attribute for this file
1261 * @count: number of byte in input
1263 * writing anything except 0 enables it
1265 static ssize_t
pci_write_rom(struct file
*filp
, struct kobject
*kobj
,
1266 struct bin_attribute
*bin_attr
, char *buf
,
1267 loff_t off
, size_t count
)
1269 struct pci_dev
*pdev
= to_pci_dev(kobj_to_dev(kobj
));
1271 if ((off
== 0) && (*buf
== '0') && (count
== 2))
1272 pdev
->rom_attr_enabled
= 0;
1274 pdev
->rom_attr_enabled
= 1;
1280 * pci_read_rom - read a PCI ROM
1282 * @kobj: kernel object handle
1283 * @bin_attr: struct bin_attribute for this file
1284 * @buf: where to put the data we read from the ROM
1286 * @count: number of bytes to read
1288 * Put @count bytes starting at @off into @buf from the ROM in the PCI
1289 * device corresponding to @kobj.
1291 static ssize_t
pci_read_rom(struct file
*filp
, struct kobject
*kobj
,
1292 struct bin_attribute
*bin_attr
, char *buf
,
1293 loff_t off
, size_t count
)
1295 struct pci_dev
*pdev
= to_pci_dev(kobj_to_dev(kobj
));
1299 if (!pdev
->rom_attr_enabled
)
1302 rom
= pci_map_rom(pdev
, &size
); /* size starts out as PCI window size */
1309 if (off
+ count
> size
)
1312 memcpy_fromio(buf
, rom
+ off
, count
);
1314 pci_unmap_rom(pdev
, rom
);
1318 static BIN_ATTR(rom
, 0600, pci_read_rom
, pci_write_rom
, 0);
1320 static struct bin_attribute
*pci_dev_rom_attrs
[] = {
1325 static umode_t
pci_dev_rom_attr_is_visible(struct kobject
*kobj
,
1326 struct bin_attribute
*a
, int n
)
1328 struct pci_dev
*pdev
= to_pci_dev(kobj_to_dev(kobj
));
1331 /* If the device has a ROM, try to expose it in sysfs. */
1332 rom_size
= pci_resource_len(pdev
, PCI_ROM_RESOURCE
);
1338 return a
->attr
.mode
;
1341 static const struct attribute_group pci_dev_rom_attr_group
= {
1342 .bin_attrs
= pci_dev_rom_attrs
,
1343 .is_bin_visible
= pci_dev_rom_attr_is_visible
,
1346 static ssize_t
reset_store(struct device
*dev
, struct device_attribute
*attr
,
1347 const char *buf
, size_t count
)
1349 struct pci_dev
*pdev
= to_pci_dev(dev
);
1353 if (kstrtoul(buf
, 0, &val
) < 0)
1359 pm_runtime_get_sync(dev
);
1360 result
= pci_reset_function(pdev
);
1361 pm_runtime_put(dev
);
1367 static DEVICE_ATTR_WO(reset
);
1369 static struct attribute
*pci_dev_reset_attrs
[] = {
1370 &dev_attr_reset
.attr
,
1374 static umode_t
pci_dev_reset_attr_is_visible(struct kobject
*kobj
,
1375 struct attribute
*a
, int n
)
1377 struct pci_dev
*pdev
= to_pci_dev(kobj_to_dev(kobj
));
1379 if (!pci_reset_supported(pdev
))
1385 static const struct attribute_group pci_dev_reset_attr_group
= {
1386 .attrs
= pci_dev_reset_attrs
,
1387 .is_visible
= pci_dev_reset_attr_is_visible
,
1390 static ssize_t
__resource_resize_show(struct device
*dev
, int n
, char *buf
)
1392 struct pci_dev
*pdev
= to_pci_dev(dev
);
1395 pci_config_pm_runtime_get(pdev
);
1397 ret
= sysfs_emit(buf
, "%016llx\n",
1398 (u64
)pci_rebar_get_possible_sizes(pdev
, n
));
1400 pci_config_pm_runtime_put(pdev
);
1405 static ssize_t
__resource_resize_store(struct device
*dev
, int n
,
1406 const char *buf
, size_t count
)
1408 struct pci_dev
*pdev
= to_pci_dev(dev
);
1409 unsigned long size
, flags
;
1413 if (kstrtoul(buf
, 0, &size
) < 0)
1422 pci_config_pm_runtime_get(pdev
);
1424 if ((pdev
->class >> 8) == PCI_CLASS_DISPLAY_VGA
) {
1425 ret
= aperture_remove_conflicting_pci_devices(pdev
,
1426 "resourceN_resize");
1431 pci_read_config_word(pdev
, PCI_COMMAND
, &cmd
);
1432 pci_write_config_word(pdev
, PCI_COMMAND
,
1433 cmd
& ~PCI_COMMAND_MEMORY
);
1435 flags
= pci_resource_flags(pdev
, n
);
1437 pci_remove_resource_files(pdev
);
1439 for (i
= 0; i
< PCI_STD_NUM_BARS
; i
++) {
1440 if (pci_resource_len(pdev
, i
) &&
1441 pci_resource_flags(pdev
, i
) == flags
)
1442 pci_release_resource(pdev
, i
);
1445 ret
= pci_resize_resource(pdev
, n
, size
);
1447 pci_assign_unassigned_bus_resources(pdev
->bus
);
1449 if (pci_create_resource_files(pdev
))
1450 pci_warn(pdev
, "Failed to recreate resource files after BAR resizing\n");
1452 pci_write_config_word(pdev
, PCI_COMMAND
, cmd
);
1454 pci_config_pm_runtime_put(pdev
);
1458 return ret
? ret
: count
;
1461 #define pci_dev_resource_resize_attr(n) \
1462 static ssize_t resource##n##_resize_show(struct device *dev, \
1463 struct device_attribute *attr, \
1466 return __resource_resize_show(dev, n, buf); \
1468 static ssize_t resource##n##_resize_store(struct device *dev, \
1469 struct device_attribute *attr,\
1470 const char *buf, size_t count)\
1472 return __resource_resize_store(dev, n, buf, count); \
1474 static DEVICE_ATTR_RW(resource##n##_resize)
1476 pci_dev_resource_resize_attr(0);
1477 pci_dev_resource_resize_attr(1);
1478 pci_dev_resource_resize_attr(2);
1479 pci_dev_resource_resize_attr(3);
1480 pci_dev_resource_resize_attr(4);
1481 pci_dev_resource_resize_attr(5);
1483 static struct attribute
*resource_resize_attrs
[] = {
1484 &dev_attr_resource0_resize
.attr
,
1485 &dev_attr_resource1_resize
.attr
,
1486 &dev_attr_resource2_resize
.attr
,
1487 &dev_attr_resource3_resize
.attr
,
1488 &dev_attr_resource4_resize
.attr
,
1489 &dev_attr_resource5_resize
.attr
,
1493 static umode_t
resource_resize_is_visible(struct kobject
*kobj
,
1494 struct attribute
*a
, int n
)
1496 struct pci_dev
*pdev
= to_pci_dev(kobj_to_dev(kobj
));
1498 return pci_rebar_get_current_size(pdev
, n
) < 0 ? 0 : a
->mode
;
1501 static const struct attribute_group pci_dev_resource_resize_group
= {
1502 .attrs
= resource_resize_attrs
,
1503 .is_visible
= resource_resize_is_visible
,
1506 int __must_check
pci_create_sysfs_dev_files(struct pci_dev
*pdev
)
1508 if (!sysfs_initialized
)
1511 return pci_create_resource_files(pdev
);
1515 * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files
1516 * @pdev: device whose entries we should free
1518 * Cleanup when @pdev is removed from sysfs.
1520 void pci_remove_sysfs_dev_files(struct pci_dev
*pdev
)
1522 if (!sysfs_initialized
)
1525 pci_remove_resource_files(pdev
);
1528 static int __init
pci_sysfs_init(void)
1530 struct pci_dev
*pdev
= NULL
;
1531 struct pci_bus
*pbus
= NULL
;
1534 sysfs_initialized
= 1;
1535 for_each_pci_dev(pdev
) {
1536 retval
= pci_create_sysfs_dev_files(pdev
);
1543 while ((pbus
= pci_find_next_bus(pbus
)))
1544 pci_create_legacy_files(pbus
);
1548 late_initcall(pci_sysfs_init
);
1550 static struct attribute
*pci_dev_dev_attrs
[] = {
1551 &dev_attr_boot_vga
.attr
,
1555 static umode_t
pci_dev_attrs_are_visible(struct kobject
*kobj
,
1556 struct attribute
*a
, int n
)
1558 struct device
*dev
= kobj_to_dev(kobj
);
1559 struct pci_dev
*pdev
= to_pci_dev(dev
);
1561 if (a
== &dev_attr_boot_vga
.attr
&& pci_is_vga(pdev
))
1567 static struct attribute
*pci_dev_hp_attrs
[] = {
1568 &dev_attr_remove
.attr
,
1569 &dev_attr_dev_rescan
.attr
,
1573 static umode_t
pci_dev_hp_attrs_are_visible(struct kobject
*kobj
,
1574 struct attribute
*a
, int n
)
1576 struct device
*dev
= kobj_to_dev(kobj
);
1577 struct pci_dev
*pdev
= to_pci_dev(dev
);
1579 if (pdev
->is_virtfn
)
1585 static umode_t
pci_bridge_attrs_are_visible(struct kobject
*kobj
,
1586 struct attribute
*a
, int n
)
1588 struct device
*dev
= kobj_to_dev(kobj
);
1589 struct pci_dev
*pdev
= to_pci_dev(dev
);
1591 if (pci_is_bridge(pdev
))
1597 static umode_t
pcie_dev_attrs_are_visible(struct kobject
*kobj
,
1598 struct attribute
*a
, int n
)
1600 struct device
*dev
= kobj_to_dev(kobj
);
1601 struct pci_dev
*pdev
= to_pci_dev(dev
);
1603 if (pci_is_pcie(pdev
))
1609 static const struct attribute_group pci_dev_group
= {
1610 .attrs
= pci_dev_attrs
,
1613 const struct attribute_group
*pci_dev_groups
[] = {
1615 &pci_dev_config_attr_group
,
1616 &pci_dev_rom_attr_group
,
1617 &pci_dev_reset_attr_group
,
1618 &pci_dev_reset_method_attr_group
,
1619 &pci_dev_vpd_attr_group
,
1621 &pci_dev_smbios_attr_group
,
1624 &pci_dev_acpi_attr_group
,
1626 &pci_dev_resource_resize_group
,
1630 static const struct attribute_group pci_dev_hp_attr_group
= {
1631 .attrs
= pci_dev_hp_attrs
,
1632 .is_visible
= pci_dev_hp_attrs_are_visible
,
1635 static const struct attribute_group pci_dev_attr_group
= {
1636 .attrs
= pci_dev_dev_attrs
,
1637 .is_visible
= pci_dev_attrs_are_visible
,
1640 static const struct attribute_group pci_bridge_attr_group
= {
1641 .attrs
= pci_bridge_attrs
,
1642 .is_visible
= pci_bridge_attrs_are_visible
,
1645 static const struct attribute_group pcie_dev_attr_group
= {
1646 .attrs
= pcie_dev_attrs
,
1647 .is_visible
= pcie_dev_attrs_are_visible
,
1650 const struct attribute_group
*pci_dev_attr_groups
[] = {
1651 &pci_dev_attr_group
,
1652 &pci_dev_hp_attr_group
,
1653 #ifdef CONFIG_PCI_IOV
1654 &sriov_pf_dev_attr_group
,
1655 &sriov_vf_dev_attr_group
,
1657 &pci_bridge_attr_group
,
1658 &pcie_dev_attr_group
,
1659 #ifdef CONFIG_PCIEAER
1660 &aer_stats_attr_group
,
1662 #ifdef CONFIG_PCIEASPM
1663 &aspm_ctrl_attr_group
,