Export smbios strings associated with onboard devices to sysfs

Commit Message

Narendra K Feb. 25, 2010, 8:29 p.m. UTC

None

Patch

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index c0c5a43..ad0fcfb 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -419,6 +419,11 @@  static int device_add_attrs(struct bus_type *bus, struct device *dev)
 		return 0;
 
 	for (i = 0; attr_name(bus->dev_attrs[i]); i++) {
+		/* if the device does not have an associated smbios string in the smbios table, do not create this attribute */ 
+		if (!(strcmp(attr_name(bus->dev_attrs[i]), "smbiosname"))) {
+			if (!smbiosname_string_is_valid(dev, NULL)) 
+				continue;
+		}
 		error = device_create_file(dev, &bus->dev_attrs[i]);
 		if (error) {
 			while (--i >= 0)
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 31b983d..1d10663 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -278,6 +278,28 @@  static void __init dmi_save_ipmi_device(const struct dmi_header *dm)
 	list_add_tail(&dev->list, &dmi_devices);
 }
 
+static void __init dmi_save_devslot(int id, int seg, int bus, int devfn, const char *name)
+{
+	struct dmi_devslot *slot;
+
+	slot = dmi_alloc(sizeof(*slot) + strlen(name) + 1);
+	if (!slot) {
+		printk(KERN_ERR "dmi_save_devslot: out of memory.\n");
+		return;
+	}	
+	slot->id = id;
+	slot->seg = seg;
+	slot->bus = bus;
+	slot->devfn = devfn;
+
+	strcpy((char *)&slot[1], name);
+	slot->dev.type = DMI_DEV_TYPE_DEVSLOT;
+	slot->dev.name = &slot[1];
+	slot->dev.device_data = slot;
+
+	list_add(&slot->dev.list, &dmi_devices);
+}
+
 static void __init dmi_save_extended_devices(const struct dmi_header *dm)
 {
 	const u8 *d = (u8*) dm + 5;
@@ -286,6 +308,7 @@  static void __init dmi_save_extended_devices(const struct dmi_header *dm)
 	if ((*d & 0x80) == 0)
 		return;
 
+	dmi_save_devslot(-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)));
 }
 
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index c5df94e..a3b9bf9 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -140,6 +140,41 @@  static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
 		       (u8)(pci_dev->class));
 }
 
+#ifdef CONFIG_DMI
+#include <linux/dmi.h>
+ssize_t
+smbiosname_string_is_valid(struct device *dev, char *buf)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+  	struct dmi_device *dmi;
+  	struct dmi_devslot *dslot;
+  	int bus;
+  	int devfn;
+
+  	bus = pdev->bus->number;
+  	devfn = pdev->devfn;
+
+  	dmi = NULL;
+  	while ((dmi = dmi_find_device(DMI_DEV_TYPE_DEVSLOT, NULL, dmi)) != NULL) {
+    		dslot = dmi->device_data;
+    		if (dslot && dslot->bus == bus && dslot->devfn == devfn) {
+			if (buf)
+      				return scnprintf(buf, PAGE_SIZE, "%s\n", dmi->name);
+			return strlen(dmi->name);
+		}
+		
+	}
+}
+EXPORT_SYMBOL(smbiosname_string_is_valid);
+
+static ssize_t
+smbiosname_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	return smbiosname_string_is_valid(dev, buf);
+
+}
+#endif
+
 static ssize_t is_enabled_store(struct device *dev,
 				struct device_attribute *attr, const char *buf,
 				size_t count)
@@ -324,6 +359,9 @@  struct device_attribute pci_dev_attrs[] = {
 	__ATTR_RO(class),
 	__ATTR_RO(irq),
 	__ATTR_RO(local_cpus),
+#ifdef CONFIG_DMI
+	__ATTR_RO(smbiosname),
+#endif
 	__ATTR_RO(local_cpulist),
 	__ATTR_RO(modalias),
 #ifdef CONFIG_NUMA
diff --git a/include/linux/device.h b/include/linux/device.h
index a62799f..647246c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -427,6 +427,10 @@  struct device {
 	void	(*release)(struct device *dev);
 };
 
+#ifdef CONFIG_DMI
+extern ssize_t smbiosname_string_is_valid(struct device *, char *);
+#endif
+
 /* Get the wakeup routines, which depend on struct device */
 #include <linux/pm_wakeup.h>
 
diff --git a/include/linux/dmi.h b/include/linux/dmi.h
index a8a3e1a..cc57c3a 100644
--- a/include/linux/dmi.h
+++ b/include/linux/dmi.h
@@ -20,6 +20,7 @@  enum dmi_device_type {
 	DMI_DEV_TYPE_SAS,
 	DMI_DEV_TYPE_IPMI = -1,
 	DMI_DEV_TYPE_OEM_STRING = -2,
+	DMI_DEV_TYPE_DEVSLOT = -3,
 };
 
 struct dmi_header {
@@ -37,6 +38,14 @@  struct dmi_device {
 
 #ifdef CONFIG_DMI
 
+struct dmi_devslot {
+	struct dmi_device dev;
+	int id;
+	int seg;
+	int bus;
+	int devfn;
+};
+
 extern int dmi_check_system(const struct dmi_system_id *list);
 const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list);
 extern const char * dmi_get_system_info(int field);