PCI: export SMBIOS provided firmware instance and label to sysfs

This patch exports SMBIOS provided firmware instance and label of
onboard PCI devices to sysfs.  New files are:
  /sys/bus/pci/devices/.../label which contains the firmware name for
the device in question, and
  /sys/bus/pci/devices/.../index which contains the firmware device type
instance for the given device.

Signed-off-by: Jordan Hargrave <jordan_hargrave@dell.com>
Signed-off-by: Narendra K <narendra_k@dell.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index d46467271349..b3d22d659990 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -277,6 +277,29 @@ static void __init dmi_save_ipmi_device(const struct dmi_header *dm)
         list_add_tail(&dev->list, &dmi_devices);
 }
 
+static void __init dmi_save_dev_onboard(int instance, int segment, int bus,
+                                        int devfn, const char *name)
+{
+        struct dmi_dev_onboard *onboard_dev;
+
+        onboard_dev = dmi_alloc(sizeof(*onboard_dev) + strlen(name) + 1);
+        if (!onboard_dev) {
+                printk(KERN_ERR "dmi_save_dev_onboard: out of memory.\n");
+                return;
+        }
+        onboard_dev->instance = instance;
+        onboard_dev->segment = segment;
+        onboard_dev->bus = bus;
+        onboard_dev->devfn = devfn;
+
+        strcpy((char *)&onboard_dev[1], name);
+        onboard_dev->dev.type = DMI_DEV_TYPE_DEV_ONBOARD;
+        onboard_dev->dev.name = (char *)&onboard_dev[1];
+        onboard_dev->dev.device_data = onboard_dev;
+
+        list_add(&onboard_dev->dev.list, &dmi_devices);
+}
+
 static void __init dmi_save_extended_devices(const struct dmi_header *dm)
 {
         const u8 *d = (u8*) dm + 5;
@@ -285,6 +308,8 @@ static void __init dmi_save_extended_devices(const struct dmi_header *dm)
         if ((*d & 0x80) == 0)
                 return;
 
+        dmi_save_dev_onboard(*(d+1), *(u16 *)(d+2), *(d+4), *(d+5),
+                             dmi_string_nosave(dm, *(d-1)));
         dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d - 1)));
 }