PCI: export SMBIOS provided firmware instance and label to sysfs

[linux-2.6.git] / drivers / firmware / memmap.c

diff --git a/drivers/firmware/memmap.c b/drivers/firmware/memmap.c
index 56f9234781faadc4cbb38813ffefa8d77b781ebe..adc07102a20d0caef9fc98290f25be6c5b2b6a3d 100644 (file)
--- a/drivers/firmware/memmap.c
+++ b/drivers/firmware/memmap.c
@@ -20,6 +20,7 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/bootmem.h>
+#include <linux/slab.h>
 
 /*
  * Data types ------------------------------------------------------------------
@@ -74,7 +75,7 @@ static struct attribute *def_attrs[] = {
        NULL
 };
 
-static struct sysfs_ops memmap_attr_ops = {
+static const struct sysfs_ops memmap_attr_ops = {
        .show = memmap_attr_show,
 };
 
@@ -122,29 +123,53 @@ static int firmware_map_add_entry(u64 start, u64 end,
        return 0;
 }
 
+/*
+ * Add memmap entry on sysfs
+ */
+static int add_sysfs_fw_map_entry(struct firmware_map_entry *entry)
+{
+       static int map_entries_nr;
+       static struct kset *mmap_kset;
+
+       if (!mmap_kset) {
+               mmap_kset = kset_create_and_add("memmap", NULL, firmware_kobj);
+               if (!mmap_kset)
+                       return -ENOMEM;
+       }
+
+       entry->kobj.kset = mmap_kset;
+       if (kobject_add(&entry->kobj, NULL, "%d", map_entries_nr++))
+               kobject_put(&entry->kobj);
+
+       return 0;
+}
+
 /**
- * firmware_map_add() - Adds a firmware mapping entry.
+ * firmware_map_add_hotplug() - Adds a firmware mapping entry when we do
+ * memory hotplug.
  * @start: Start of the memory range.
  * @end:   End of the memory range (inclusive).
  * @type:  Type of the memory range.
  *
- * This function uses kmalloc() for memory
- * allocation. Use firmware_map_add_early() if you want to use the bootmem
- * allocator.
- *
- * That function must be called before late_initcall.
+ * Adds a firmware mapping entry. This function is for memory hotplug, it is
+ * similar to function firmware_map_add_early(). The only difference is that
+ * it will create the syfs entry dynamically.
  *
  * Returns 0 on success, or -ENOMEM if no memory could be allocated.
  **/
-int firmware_map_add(u64 start, u64 end, const char *type)
+int __meminit firmware_map_add_hotplug(u64 start, u64 end, const char *type)
 {
        struct firmware_map_entry *entry;
 
-       entry = kmalloc(sizeof(struct firmware_map_entry), GFP_ATOMIC);
+       entry = kzalloc(sizeof(struct firmware_map_entry), GFP_ATOMIC);
        if (!entry)
                return -ENOMEM;
 
-       return firmware_map_add_entry(start, end, type, entry);
+       firmware_map_add_entry(start, end, type, entry);
+       /* create the memmap entry */
+       add_sysfs_fw_map_entry(entry);
+
+       return 0;
 }
 
 /**
@@ -154,7 +179,7 @@ int firmware_map_add(u64 start, u64 end, const char *type)
  * @type:  Type of the memory range.
  *
  * Adds a firmware mapping entry. This function uses the bootmem allocator
- * for memory allocation. Use firmware_map_add() if you want to use kmalloc().
+ * for memory allocation.
  *
  * That function must be called before late_initcall.
  *
@@ -214,19 +239,10 @@ static ssize_t memmap_attr_show(struct kobject *kobj,
  */
 static int __init memmap_init(void)
 {
-       int i = 0;
        struct firmware_map_entry *entry;
-       struct kset *memmap_kset;
-
-       memmap_kset = kset_create_and_add("memmap", NULL, firmware_kobj);
-       if (WARN_ON(!memmap_kset))
-               return -ENOMEM;
 
-       list_for_each_entry(entry, &map_entries, list) {
-               entry->kobj.kset = memmap_kset;
-               if (kobject_add(&entry->kobj, NULL, "%d", i++))
-                       kobject_put(&entry->kobj);
-       }
+       list_for_each_entry(entry, &map_entries, list)
+               add_sysfs_fw_map_entry(entry);
 
        return 0;
 }