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path: root/drivers/acpi/pci_root.c
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Diffstat (limited to 'drivers/acpi/pci_root.c')
-rw-r--r--drivers/acpi/pci_root.c130
1 files changed, 61 insertions, 69 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 5d2f77fcd50c..0fd9988c283d 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -35,35 +35,32 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-
#define _COMPONENT ACPI_PCI_COMPONENT
-ACPI_MODULE_NAME ("pci_root")
-
+ACPI_MODULE_NAME("pci_root")
#define ACPI_PCI_ROOT_CLASS "pci_bridge"
#define ACPI_PCI_ROOT_HID "PNP0A03"
#define ACPI_PCI_ROOT_DRIVER_NAME "ACPI PCI Root Bridge Driver"
#define ACPI_PCI_ROOT_DEVICE_NAME "PCI Root Bridge"
-
-static int acpi_pci_root_add (struct acpi_device *device);
-static int acpi_pci_root_remove (struct acpi_device *device, int type);
-static int acpi_pci_root_start (struct acpi_device *device);
+static int acpi_pci_root_add(struct acpi_device *device);
+static int acpi_pci_root_remove(struct acpi_device *device, int type);
+static int acpi_pci_root_start(struct acpi_device *device);
static struct acpi_driver acpi_pci_root_driver = {
- .name = ACPI_PCI_ROOT_DRIVER_NAME,
- .class = ACPI_PCI_ROOT_CLASS,
- .ids = ACPI_PCI_ROOT_HID,
- .ops = {
- .add = acpi_pci_root_add,
- .remove = acpi_pci_root_remove,
- .start = acpi_pci_root_start,
- },
+ .name = ACPI_PCI_ROOT_DRIVER_NAME,
+ .class = ACPI_PCI_ROOT_CLASS,
+ .ids = ACPI_PCI_ROOT_HID,
+ .ops = {
+ .add = acpi_pci_root_add,
+ .remove = acpi_pci_root_remove,
+ .start = acpi_pci_root_start,
+ },
};
struct acpi_pci_root {
- struct list_head node;
- acpi_handle handle;
- struct acpi_pci_id id;
- struct pci_bus *bus;
+ struct list_head node;
+ acpi_handle handle;
+ struct acpi_pci_id id;
+ struct pci_bus *bus;
};
static LIST_HEAD(acpi_pci_roots);
@@ -92,6 +89,7 @@ int acpi_pci_register_driver(struct acpi_pci_driver *driver)
return n;
}
+
EXPORT_SYMBOL(acpi_pci_register_driver);
void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
@@ -115,10 +113,11 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
driver->remove(root->handle);
}
}
+
EXPORT_SYMBOL(acpi_pci_unregister_driver);
static acpi_status
-get_root_bridge_busnr_callback (struct acpi_resource *resource, void *data)
+get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
{
int *busnr = (int *)data;
struct acpi_resource_address64 address;
@@ -129,20 +128,21 @@ get_root_bridge_busnr_callback (struct acpi_resource *resource, void *data)
return AE_OK;
acpi_resource_to_address64(resource, &address);
- if ((address.address_length > 0) &&
- (address.resource_type == ACPI_BUS_NUMBER_RANGE))
+ if ((address.address_length > 0) &&
+ (address.resource_type == ACPI_BUS_NUMBER_RANGE))
*busnr = address.min_address_range;
return AE_OK;
}
-static acpi_status
-try_get_root_bridge_busnr(acpi_handle handle, int *busnum)
+static acpi_status try_get_root_bridge_busnr(acpi_handle handle, int *busnum)
{
acpi_status status;
*busnum = -1;
- status = acpi_walk_resources(handle, METHOD_NAME__CRS, get_root_bridge_busnr_callback, busnum);
+ status =
+ acpi_walk_resources(handle, METHOD_NAME__CRS,
+ get_root_bridge_busnr_callback, busnum);
if (ACPI_FAILURE(status))
return status;
/* Check if we really get a bus number from _CRS */
@@ -151,16 +151,14 @@ try_get_root_bridge_busnr(acpi_handle handle, int *busnum)
return AE_OK;
}
-static int
-acpi_pci_root_add (
- struct acpi_device *device)
+static int acpi_pci_root_add(struct acpi_device *device)
{
- int result = 0;
- struct acpi_pci_root *root = NULL;
- struct acpi_pci_root *tmp;
- acpi_status status = AE_OK;
- unsigned long value = 0;
- acpi_handle handle = NULL;
+ int result = 0;
+ struct acpi_pci_root *root = NULL;
+ struct acpi_pci_root *tmp;
+ acpi_status status = AE_OK;
+ unsigned long value = 0;
+ acpi_handle handle = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_root_add");
@@ -188,15 +186,15 @@ acpi_pci_root_add (
* -------
* Obtained via _SEG, if exists, otherwise assumed to be zero (0).
*/
- status = acpi_evaluate_integer(root->handle, METHOD_NAME__SEG, NULL,
- &value);
+ status = acpi_evaluate_integer(root->handle, METHOD_NAME__SEG, NULL,
+ &value);
switch (status) {
case AE_OK:
root->id.segment = (u16) value;
break;
case AE_NOT_FOUND:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Assuming segment 0 (no _SEG)\n"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Assuming segment 0 (no _SEG)\n"));
root->id.segment = 0;
break;
default:
@@ -210,8 +208,8 @@ acpi_pci_root_add (
* ---
* Obtained via _BBN, if exists, otherwise assumed to be zero (0).
*/
- status = acpi_evaluate_integer(root->handle, METHOD_NAME__BBN, NULL,
- &value);
+ status = acpi_evaluate_integer(root->handle, METHOD_NAME__BBN, NULL,
+ &value);
switch (status) {
case AE_OK:
root->id.bus = (u16) value;
@@ -229,18 +227,19 @@ acpi_pci_root_add (
/* Some systems have wrong _BBN */
list_for_each_entry(tmp, &acpi_pci_roots, node) {
if ((tmp->id.segment == root->id.segment)
- && (tmp->id.bus == root->id.bus)) {
+ && (tmp->id.bus == root->id.bus)) {
int bus = 0;
acpi_status status;
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Wrong _BBN value, please reboot and using option 'pci=noacpi'\n"));
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Wrong _BBN value, please reboot and using option 'pci=noacpi'\n"));
status = try_get_root_bridge_busnr(root->handle, &bus);
if (ACPI_FAILURE(status))
break;
if (bus != root->id.bus) {
- printk(KERN_INFO PREFIX "PCI _CRS %d overrides _BBN 0\n", bus);
+ printk(KERN_INFO PREFIX
+ "PCI _CRS %d overrides _BBN 0\n", bus);
root->id.bus = bus;
}
break;
@@ -258,12 +257,12 @@ acpi_pci_root_add (
* TBD: Need PCI interface for enumeration/configuration of roots.
*/
- /* TBD: Locking */
- list_add_tail(&root->node, &acpi_pci_roots);
+ /* TBD: Locking */
+ list_add_tail(&root->node, &acpi_pci_roots);
- printk(KERN_INFO PREFIX "%s [%s] (%04x:%02x)\n",
- acpi_device_name(device), acpi_device_bid(device),
- root->id.segment, root->id.bus);
+ printk(KERN_INFO PREFIX "%s [%s] (%04x:%02x)\n",
+ acpi_device_name(device), acpi_device_bid(device),
+ root->id.segment, root->id.bus);
/*
* Scan the Root Bridge
@@ -274,9 +273,9 @@ acpi_pci_root_add (
*/
root->bus = pci_acpi_scan_root(device, root->id.segment, root->id.bus);
if (!root->bus) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Bus %04x:%02x not present in PCI namespace\n",
- root->id.segment, root->id.bus));
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Bus %04x:%02x not present in PCI namespace\n",
+ root->id.segment, root->id.bus));
result = -ENODEV;
goto end;
}
@@ -298,9 +297,9 @@ acpi_pci_root_add (
status = acpi_get_handle(root->handle, METHOD_NAME__PRT, &handle);
if (ACPI_SUCCESS(status))
result = acpi_pci_irq_add_prt(root->handle, root->id.segment,
- root->id.bus);
+ root->id.bus);
-end:
+ end:
if (result) {
if (!list_empty(&root->node))
list_del(&root->node);
@@ -310,11 +309,9 @@ end:
return_VALUE(result);
}
-static int
-acpi_pci_root_start (
- struct acpi_device *device)
+static int acpi_pci_root_start(struct acpi_device *device)
{
- struct acpi_pci_root *root;
+ struct acpi_pci_root *root;
ACPI_FUNCTION_TRACE("acpi_pci_root_start");
@@ -327,27 +324,23 @@ acpi_pci_root_start (
return_VALUE(-ENODEV);
}
-static int
-acpi_pci_root_remove (
- struct acpi_device *device,
- int type)
+static int acpi_pci_root_remove(struct acpi_device *device, int type)
{
- struct acpi_pci_root *root = NULL;
+ struct acpi_pci_root *root = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_root_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
- root = (struct acpi_pci_root *) acpi_driver_data(device);
+ root = (struct acpi_pci_root *)acpi_driver_data(device);
kfree(root);
return_VALUE(0);
}
-
-static int __init acpi_pci_root_init (void)
+static int __init acpi_pci_root_init(void)
{
ACPI_FUNCTION_TRACE("acpi_pci_root_init");
@@ -355,8 +348,8 @@ static int __init acpi_pci_root_init (void)
return_VALUE(0);
/* DEBUG:
- acpi_dbg_layer = ACPI_PCI_COMPONENT;
- acpi_dbg_level = 0xFFFFFFFF;
+ acpi_dbg_layer = ACPI_PCI_COMPONENT;
+ acpi_dbg_level = 0xFFFFFFFF;
*/
if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0)
@@ -366,4 +359,3 @@ static int __init acpi_pci_root_init (void)
}
subsys_initcall(acpi_pci_root_init);
-
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