* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (30 commits)
PCI: update for owner removal from struct device_attribute
PCI: Fix warnings when CONFIG_DMI unset
PCI: Do not run NVidia quirks related to MSI with MSI disabled
x86/PCI: use for_each_pci_dev()
PCI: use for_each_pci_dev()
PCI: MSI: Restore read_msi_msg_desc(); add get_cached_msi_msg_desc()
PCI: export SMBIOS provided firmware instance and label to sysfs
PCI: Allow read/write access to sysfs I/O port resources
x86/PCI: use host bridge _CRS info on ASRock ALiveSATA2-GLAN
PCI: remove unused HAVE_ARCH_PCI_SET_DMA_MAX_SEGMENT_{SIZE|BOUNDARY}
PCI: disable mmio during bar sizing
PCI: MSI: Remove unsafe and unnecessary hardware access
PCI: Default PCIe ASPM control to on and require !EMBEDDED to disable
PCI: kernel oops on access to pci proc file while hot-removal
PCI: pci-sysfs: remove casts from void*
ACPI: Disable ASPM if the platform won't provide _OSC control for PCIe
PCI hotplug: make sure child bridges are enabled at hotplug time
PCI hotplug: shpchp: Removed check for hotplug of display devices
PCI hotplug: pciehp: Fixed return value sign for pciehp_unconfigure_device
PCI: Don't enable aspm before drivers have had a chance to veto it
...
tirimbino
Linus Torvalds
15 years ago
commit
1cfd2bda8c
@ -0,0 +1,143 @@ |
||||
/*
|
||||
* Purpose: Export the firmware instance and label associated with |
||||
* a pci device to sysfs |
||||
* Copyright (C) 2010 Dell Inc. |
||||
* by Narendra K <Narendra_K@dell.com>, |
||||
* Jordan Hargrave <Jordan_Hargrave@dell.com> |
||||
* |
||||
* SMBIOS defines type 41 for onboard pci devices. This code retrieves |
||||
* the instance number and string from the type 41 record and exports |
||||
* it to sysfs. |
||||
* |
||||
* Please see http://linux.dell.com/wiki/index.php/Oss/libnetdevname for more
|
||||
* information. |
||||
*/ |
||||
|
||||
#include <linux/dmi.h> |
||||
#include <linux/sysfs.h> |
||||
#include <linux/pci.h> |
||||
#include <linux/pci_ids.h> |
||||
#include <linux/module.h> |
||||
#include <linux/device.h> |
||||
#include "pci.h" |
||||
|
||||
enum smbios_attr_enum { |
||||
SMBIOS_ATTR_NONE = 0, |
||||
SMBIOS_ATTR_LABEL_SHOW, |
||||
SMBIOS_ATTR_INSTANCE_SHOW, |
||||
}; |
||||
|
||||
static mode_t |
||||
find_smbios_instance_string(struct pci_dev *pdev, char *buf, |
||||
enum smbios_attr_enum attribute) |
||||
{ |
||||
const struct dmi_device *dmi; |
||||
struct dmi_dev_onboard *donboard; |
||||
int bus; |
||||
int devfn; |
||||
|
||||
bus = pdev->bus->number; |
||||
devfn = pdev->devfn; |
||||
|
||||
dmi = NULL; |
||||
while ((dmi = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, |
||||
NULL, dmi)) != NULL) { |
||||
donboard = dmi->device_data; |
||||
if (donboard && donboard->bus == bus && |
||||
donboard->devfn == devfn) { |
||||
if (buf) { |
||||
if (attribute == SMBIOS_ATTR_INSTANCE_SHOW) |
||||
return scnprintf(buf, PAGE_SIZE, |
||||
"%d\n", |
||||
donboard->instance); |
||||
else if (attribute == SMBIOS_ATTR_LABEL_SHOW) |
||||
return scnprintf(buf, PAGE_SIZE, |
||||
"%s\n", |
||||
dmi->name); |
||||
} |
||||
return strlen(dmi->name); |
||||
} |
||||
} |
||||
return 0; |
||||
} |
||||
|
||||
static mode_t |
||||
smbios_instance_string_exist(struct kobject *kobj, struct attribute *attr, |
||||
int n) |
||||
{ |
||||
struct device *dev; |
||||
struct pci_dev *pdev; |
||||
|
||||
dev = container_of(kobj, struct device, kobj); |
||||
pdev = to_pci_dev(dev); |
||||
|
||||
return find_smbios_instance_string(pdev, NULL, SMBIOS_ATTR_NONE) ? |
||||
S_IRUGO : 0; |
||||
} |
||||
|
||||
static ssize_t |
||||
smbioslabel_show(struct device *dev, struct device_attribute *attr, char *buf) |
||||
{ |
||||
struct pci_dev *pdev; |
||||
pdev = to_pci_dev(dev); |
||||
|
||||
return find_smbios_instance_string(pdev, buf, |
||||
SMBIOS_ATTR_LABEL_SHOW); |
||||
} |
||||
|
||||
static ssize_t |
||||
smbiosinstance_show(struct device *dev, |
||||
struct device_attribute *attr, char *buf) |
||||
{ |
||||
struct pci_dev *pdev; |
||||
pdev = to_pci_dev(dev); |
||||
|
||||
return find_smbios_instance_string(pdev, buf, |
||||
SMBIOS_ATTR_INSTANCE_SHOW); |
||||
} |
||||
|
||||
static struct device_attribute smbios_attr_label = { |
||||
.attr = {.name = "label", .mode = 0444}, |
||||
.show = smbioslabel_show, |
||||
}; |
||||
|
||||
static struct device_attribute smbios_attr_instance = { |
||||
.attr = {.name = "index", .mode = 0444}, |
||||
.show = smbiosinstance_show, |
||||
}; |
||||
|
||||
static struct attribute *smbios_attributes[] = { |
||||
&smbios_attr_label.attr, |
||||
&smbios_attr_instance.attr, |
||||
NULL, |
||||
}; |
||||
|
||||
static struct attribute_group smbios_attr_group = { |
||||
.attrs = smbios_attributes, |
||||
.is_visible = smbios_instance_string_exist, |
||||
}; |
||||
|
||||
static int |
||||
pci_create_smbiosname_file(struct pci_dev *pdev) |
||||
{ |
||||
if (!sysfs_create_group(&pdev->dev.kobj, &smbios_attr_group)) |
||||
return 0; |
||||
return -ENODEV; |
||||
} |
||||
|
||||
static void |
||||
pci_remove_smbiosname_file(struct pci_dev *pdev) |
||||
{ |
||||
sysfs_remove_group(&pdev->dev.kobj, &smbios_attr_group); |
||||
} |
||||
|
||||
void pci_create_firmware_label_files(struct pci_dev *pdev) |
||||
{ |
||||
if (!pci_create_smbiosname_file(pdev)) |
||||
; |
||||
} |
||||
|
||||
void pci_remove_firmware_label_files(struct pci_dev *pdev) |
||||
{ |
||||
pci_remove_smbiosname_file(pdev); |
||||
} |
||||
Loading…
Reference in new issue