#define ACPI_MEMORY_DEVICE_COMPONENT 0x08000000UL
#define ACPI_MEMORY_DEVICE_CLASS "memory"
#define ACPI_MEMORY_DEVICE_HID "PNP0C80"
-#define ACPI_MEMORY_DEVICE_DRIVER_NAME "Hotplug Mem Driver"
#define ACPI_MEMORY_DEVICE_NAME "Hotplug Mem Device"
#define _COMPONENT ACPI_MEMORY_DEVICE_COMPONENT
-ACPI_MODULE_NAME("acpi_memory")
- MODULE_AUTHOR("Naveen B S <naveen.b.s@intel.com>");
-MODULE_DESCRIPTION(ACPI_MEMORY_DEVICE_DRIVER_NAME);
+ACPI_MODULE_NAME("acpi_memhotplug");
+MODULE_AUTHOR("Naveen B S <naveen.b.s@intel.com>");
+MODULE_DESCRIPTION("Hotplug Mem Driver");
MODULE_LICENSE("GPL");
/* ACPI _STA method values */
static int acpi_memory_device_start(struct acpi_device *device);
static struct acpi_driver acpi_memory_device_driver = {
- .name = ACPI_MEMORY_DEVICE_DRIVER_NAME,
+ .name = "acpi_memhotplug",
.class = ACPI_MEMORY_DEVICE_CLASS,
.ids = ACPI_MEMORY_DEVICE_HID,
.ops = {
struct list_head res_list;
};
+static int acpi_hotmem_initialized;
+
static acpi_status
acpi_memory_get_resource(struct acpi_resource *resource, void *context)
{
num_enabled++;
continue;
}
+
+ if (node < 0)
+ node = memory_add_physaddr_to_nid(info->start_addr);
+
result = add_memory(node, info->start_addr, info->length);
if (result)
continue;
if (!device)
return -EINVAL;
- mem_device = kmalloc(sizeof(struct acpi_memory_device), GFP_KERNEL);
+ mem_device = kzalloc(sizeof(struct acpi_memory_device), GFP_KERNEL);
if (!mem_device)
return -ENOMEM;
- memset(mem_device, 0, sizeof(struct acpi_memory_device));
INIT_LIST_HEAD(&mem_device->res_list);
mem_device->device = device;
/* Set the device state */
mem_device->state = MEMORY_POWER_ON_STATE;
- printk(KERN_INFO "%s \n", acpi_device_name(device));
+ printk(KERN_DEBUG "%s \n", acpi_device_name(device));
return result;
}
if (!device || !acpi_driver_data(device))
return -EINVAL;
- mem_device = (struct acpi_memory_device *)acpi_driver_data(device);
+ mem_device = acpi_driver_data(device);
kfree(mem_device);
return 0;
struct acpi_memory_device *mem_device;
int result = 0;
+ /*
+ * Early boot code has recognized memory area by EFI/E820.
+ * If DSDT shows these memory devices on boot, hotplug is not necessary
+ * for them. So, it just returns until completion of this driver's
+ * start up.
+ */
+ if (!acpi_hotmem_initialized)
+ return 0;
+
mem_device = acpi_driver_data(device);
if (!acpi_memory_check_device(mem_device)) {
return -ENODEV;
}
+ acpi_hotmem_initialized = 1;
return 0;
}