mirror of
https://github.com/edk2-porting/linux-next.git
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763e9db999
Fixes the build. Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
/*
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* Purpose: Export the firmware instance and label associated with
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* a pci device to sysfs
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* Copyright (C) 2010 Dell Inc.
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* by Narendra K <Narendra_K@dell.com>,
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* Jordan Hargrave <Jordan_Hargrave@dell.com>
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*
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* SMBIOS defines type 41 for onboard pci devices. This code retrieves
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* the instance number and string from the type 41 record and exports
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* it to sysfs.
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*
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* Please see http://linux.dell.com/wiki/index.php/Oss/libnetdevname for more
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* information.
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*/
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#include <linux/dmi.h>
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#include <linux/sysfs.h>
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#include <linux/pci.h>
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#include <linux/pci_ids.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include "pci.h"
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enum smbios_attr_enum {
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SMBIOS_ATTR_NONE = 0,
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SMBIOS_ATTR_LABEL_SHOW,
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SMBIOS_ATTR_INSTANCE_SHOW,
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};
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static mode_t
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find_smbios_instance_string(struct pci_dev *pdev, char *buf,
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enum smbios_attr_enum attribute)
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{
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const struct dmi_device *dmi;
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struct dmi_dev_onboard *donboard;
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int bus;
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int devfn;
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bus = pdev->bus->number;
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devfn = pdev->devfn;
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dmi = NULL;
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while ((dmi = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD,
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NULL, dmi)) != NULL) {
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donboard = dmi->device_data;
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if (donboard && donboard->bus == bus &&
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donboard->devfn == devfn) {
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if (buf) {
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if (attribute == SMBIOS_ATTR_INSTANCE_SHOW)
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return scnprintf(buf, PAGE_SIZE,
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"%d\n",
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donboard->instance);
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else if (attribute == SMBIOS_ATTR_LABEL_SHOW)
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return scnprintf(buf, PAGE_SIZE,
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"%s\n",
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dmi->name);
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}
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return strlen(dmi->name);
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}
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}
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return 0;
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}
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static mode_t
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smbios_instance_string_exist(struct kobject *kobj, struct attribute *attr,
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int n)
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{
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struct device *dev;
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struct pci_dev *pdev;
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dev = container_of(kobj, struct device, kobj);
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pdev = to_pci_dev(dev);
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return find_smbios_instance_string(pdev, NULL, SMBIOS_ATTR_NONE) ?
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S_IRUGO : 0;
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}
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static ssize_t
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smbioslabel_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pci_dev *pdev;
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pdev = to_pci_dev(dev);
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return find_smbios_instance_string(pdev, buf,
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SMBIOS_ATTR_LABEL_SHOW);
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}
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static ssize_t
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smbiosinstance_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct pci_dev *pdev;
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pdev = to_pci_dev(dev);
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return find_smbios_instance_string(pdev, buf,
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SMBIOS_ATTR_INSTANCE_SHOW);
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}
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static struct device_attribute smbios_attr_label = {
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.attr = {.name = "label", .mode = 0444},
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.show = smbioslabel_show,
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};
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static struct device_attribute smbios_attr_instance = {
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.attr = {.name = "index", .mode = 0444},
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.show = smbiosinstance_show,
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};
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static struct attribute *smbios_attributes[] = {
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&smbios_attr_label.attr,
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&smbios_attr_instance.attr,
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NULL,
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};
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static struct attribute_group smbios_attr_group = {
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.attrs = smbios_attributes,
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.is_visible = smbios_instance_string_exist,
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};
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static int
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pci_create_smbiosname_file(struct pci_dev *pdev)
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{
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if (!sysfs_create_group(&pdev->dev.kobj, &smbios_attr_group))
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return 0;
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return -ENODEV;
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}
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static void
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pci_remove_smbiosname_file(struct pci_dev *pdev)
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{
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sysfs_remove_group(&pdev->dev.kobj, &smbios_attr_group);
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}
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void pci_create_firmware_label_files(struct pci_dev *pdev)
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{
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if (!pci_create_smbiosname_file(pdev))
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;
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}
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void pci_remove_firmware_label_files(struct pci_dev *pdev)
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{
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pci_remove_smbiosname_file(pdev);
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}
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