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reactos/drivers/bus/acpi/ospm/busmgr/bm.c
Art Yerkes c501d8112c Create a branch for network fixes. 
svn path=/branches/aicom-network-fixes/; revision=34994
2008-08-01 11:32:26 +00:00

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/******************************************************************************
*
* Module Name: bm.c
* $Revision: 1.1 $
*
*****************************************************************************/
/*
* Copyright (C) 2000, 2001 Andrew Grover
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <acpi.h>
#define _COMPONENT ACPI_BUS_MANAGER
MODULE_NAME ("bm")
/****************************************************************************
* Globals
****************************************************************************/
extern FADT_DESCRIPTOR_REV2 acpi_fadt;
/* TODO: Make dynamically sizeable. */
static BM_NODE_LIST node_list;
/****************************************************************************
* Internal Functions
****************************************************************************/
/****************************************************************************
*
* FUNCTION: bm_print
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
void
bm_print (
BM_NODE *node,
u32 flags)
{
ACPI_BUFFER buffer;
BM_DEVICE *device = NULL;
char *type_string = NULL;
if (!node) {
return;
}
device = &(node->device);
if (flags & BM_PRINT_PRESENT) {
if (!BM_DEVICE_PRESENT(device)) {
return;
}
}
buffer.length = 256;
buffer.pointer = acpi_os_callocate(buffer.length);
if (!buffer.pointer) {
return;
}
acpi_get_name(device->acpi_handle, ACPI_FULL_PATHNAME, &buffer);
switch(device->id.type) {
case BM_TYPE_SYSTEM:
type_string = "System";
break;
case BM_TYPE_SCOPE:
type_string = "Scope";
break;
case BM_TYPE_PROCESSOR:
type_string = "Processor";
break;
case BM_TYPE_THERMAL_ZONE:
type_string = "ThermalZone";
break;
case BM_TYPE_POWER_RESOURCE:
type_string = "PowerResource";
break;
case BM_TYPE_FIXED_BUTTON:
type_string = "Button";
break;
case BM_TYPE_DEVICE:
type_string = "Device";
break;
default:
type_string = "Unknown";
break;
}
if (!(flags & BM_PRINT_GROUP)) {
DEBUG_PRINT(ACPI_INFO, ("+------------------------------------------------------------\n"));
}
DEBUG_PRINT(ACPI_INFO, ("%s[0x%02x] hid[%s] %s\n", type_string, device->handle, device->id.hid, buffer.pointer));
DEBUG_PRINT(ACPI_INFO, (" acpi_handle[0x%08x] flags[0x%02x] status[0x%02x]\n", device->acpi_handle, device->flags, device->status));
if (flags & BM_PRINT_IDENTIFICATION) {
DEBUG_PRINT(ACPI_INFO, (" identification: uid[%s] adr[0x%08x]\n", device->id.uid, device->id.adr));
}
if (flags & BM_PRINT_LINKAGE) {
DEBUG_PRINT(ACPI_INFO, (" linkage: this[%p] parent[%p] next[%p]\n", node, node->parent, node->next));
DEBUG_PRINT(ACPI_INFO, (" scope.head[%p] scope.tail[%p]\n", node->scope.head, node->scope.tail));
}
if (flags & BM_PRINT_POWER) {
DEBUG_PRINT(ACPI_INFO, (" power: state[D%d] flags[0x%08X]\n", device->power.state, device->power.flags));
DEBUG_PRINT(ACPI_INFO, (" S0[0x%02x] S1[0x%02x] S2[0x%02x]\n", device->power.dx_supported[0], device->power.dx_supported[1], device->power.dx_supported[2]));
DEBUG_PRINT(ACPI_INFO, (" S3[0x%02x] S4[0x%02x] S5[0x%02x]\n", device->power.dx_supported[3], device->power.dx_supported[4], device->power.dx_supported[5]));
}
if (!(flags & BM_PRINT_GROUP)) {
DEBUG_PRINT(ACPI_INFO, ("+------------------------------------------------------------\n"));
}
acpi_os_free(buffer.pointer);
return;
}
/****************************************************************************
*
* FUNCTION: bm_print_hierarchy
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
void
bm_print_hierarchy (void)
{
u32 i = 0;
FUNCTION_TRACE("bm_print_hierarchy");
DEBUG_PRINT(ACPI_INFO, ("+------------------------------------------------------------\n"));
for (i = 0; i < node_list.count; i++) {
bm_print(node_list.nodes[i], BM_PRINT_GROUP | BM_PRINT_PRESENT);
}
DEBUG_PRINT(ACPI_INFO, ("+------------------------------------------------------------\n"));
return_VOID;
}
/****************************************************************************
*
* FUNCTION: bm_get_status
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_get_status (
BM_DEVICE *device)
{
ACPI_STATUS status = AE_OK;
if (!device) {
return AE_BAD_PARAMETER;
}
device->status = BM_STATUS_UNKNOWN;
/*
* Dynamic Status?
* ---------------
* If _STA isn't present we just return the default status.
*/
if (!(device->flags & BM_FLAGS_DYNAMIC_STATUS)) {
device->status = BM_STATUS_DEFAULT;
return AE_OK;
}
/*
* Evaluate _STA:
* --------------
*/
status = bm_evaluate_simple_integer(device->acpi_handle, "_STA",
&(device->status));
return status;
}
/****************************************************************************
*
* FUNCTION: bm_get_identification
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_get_identification (
BM_DEVICE *device)
{
ACPI_STATUS status = AE_OK;
ACPI_DEVICE_INFO info;
if (!device) {
return AE_BAD_PARAMETER;
}
if (!(device->flags & BM_FLAGS_IDENTIFIABLE)) {
return AE_OK;
}
MEMSET(&(device->id.uid), 0, sizeof(device->id.uid));
MEMSET(&(device->id.hid), 0, sizeof(device->id.hid));
device->id.adr = BM_ADDRESS_UNKNOWN;
/*
* Get Object Info:
* ----------------
* Evalute _UID, _HID, _ADR, and _STA...
*/
status = acpi_get_object_info(device->acpi_handle, &info);
if (ACPI_FAILURE(status)) {
return status;
}
if (info.valid & ACPI_VALID_UID) {
MEMCPY((void*)device->id.uid, (void*)info.unique_id,
sizeof(BM_DEVICE_UID));
}
if (info.valid & ACPI_VALID_HID) {
MEMCPY((void*)device->id.hid, (void*)info.hardware_id,
sizeof(BM_DEVICE_HID));
}
if (info.valid & ACPI_VALID_ADR) {
device->id.adr = info.address;
}
return status;
}
/****************************************************************************
*
* FUNCTION: bm_get_flags
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_get_flags (
BM_DEVICE *device)
{
ACPI_HANDLE acpi_handle = NULL;
if (!device) {
return AE_BAD_PARAMETER;
}
device->flags = BM_FLAGS_UNKNOWN;
switch (device->id.type) {
case BM_TYPE_DEVICE:
/*
* Presence of _DCK indicates a docking station.
*/
if (ACPI_SUCCESS(acpi_get_handle(device->acpi_handle,
"_DCK", &acpi_handle))) {
device->flags |= BM_FLAGS_DOCKING_STATION;
}
/*
* Presence of _EJD and/or _EJx indicates 'ejectable'.
* TODO: _EJx...
*/
if (ACPI_SUCCESS(acpi_get_handle(device->acpi_handle,
"_EJD", &acpi_handle))) {
device->flags |= BM_FLAGS_EJECTABLE;
}
/*
* Presence of _PR0 or _PS0 indicates 'power manageable'.
*/
if (ACPI_SUCCESS(acpi_get_handle(device->acpi_handle,
"_PR0", &acpi_handle)) ||
ACPI_SUCCESS(acpi_get_handle(device->acpi_handle,
"_PS0", &acpi_handle))) {
device->flags |= BM_FLAGS_POWER_CONTROL;
}
/*
* Presence of _CRS indicates 'configurable'.
*/
if (ACPI_SUCCESS(acpi_get_handle(device->acpi_handle,
"_CRS", &acpi_handle))) {
device->flags |= BM_FLAGS_CONFIGURABLE;
}
/* Fall through to next case statement. */
case BM_TYPE_PROCESSOR:
case BM_TYPE_THERMAL_ZONE:
case BM_TYPE_POWER_RESOURCE:
/*
* Presence of _HID or _ADR indicates 'identifiable'.
*/
if (ACPI_SUCCESS(acpi_get_handle(device->acpi_handle,
"_HID", &acpi_handle)) ||
ACPI_SUCCESS(acpi_get_handle(device->acpi_handle,
"_ADR", &acpi_handle))) {
device->flags |= BM_FLAGS_IDENTIFIABLE;
}
/*
* Presence of _STA indicates 'dynamic status'.
*/
if (ACPI_SUCCESS(acpi_get_handle(device->acpi_handle,
"_STA", &acpi_handle))) {
device->flags |= BM_FLAGS_DYNAMIC_STATUS;
}
break;
}
return AE_OK;
}
/****************************************************************************
*
* FUNCTION: bm_add_namespace_device
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_add_namespace_device (
ACPI_HANDLE acpi_handle,
ACPI_OBJECT_TYPE acpi_type,
BM_NODE *parent,
BM_NODE **child)
{
ACPI_STATUS status = AE_OK;
BM_NODE *node = NULL;
BM_DEVICE *device = NULL;
FUNCTION_TRACE("bm_add_namespace_device");
if (!parent || !child) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (node_list.count > BM_HANDLES_MAX) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
(*child) = NULL;
/*
* Create Node:
* ------------
*/
node = acpi_os_callocate(sizeof(BM_NODE));
if (!node) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
node->parent = parent;
node->next = NULL;
device = &(node->device);
device->handle = node_list.count;
device->acpi_handle = acpi_handle;
/*
* Device Type:
* ------------
*/
switch (acpi_type) {
case INTERNAL_TYPE_SCOPE:
device->id.type = BM_TYPE_SCOPE;
break;
case ACPI_TYPE_PROCESSOR:
device->id.type = BM_TYPE_PROCESSOR;
break;
case ACPI_TYPE_THERMAL:
device->id.type = BM_TYPE_THERMAL_ZONE;
break;
case ACPI_TYPE_POWER:
device->id.type = BM_TYPE_POWER_RESOURCE;
break;
case ACPI_TYPE_DEVICE:
device->id.type = BM_TYPE_DEVICE;
break;
}
/*
* Get Other Device Info:
* ----------------------
* But only if this device's parent is present (which implies
* this device MAY be present).
*/
if (BM_NODE_PRESENT(node->parent)) {
/*
* Device Flags
*/
status = bm_get_flags(device);
if (ACPI_FAILURE(status)) {
goto end;
}
/*
* Device Identification
*/
status = bm_get_identification(device);
if (ACPI_FAILURE(status)) {
goto end;
}
/*
* Device Status
*/
status = bm_get_status(device);
if (ACPI_FAILURE(status)) {
goto end;
}
/*
* Power Management:
* -----------------
* If this node doesn't provide direct power control
* then we inherit PM capabilities from its parent.
*
* TODO: Inherit!
*/
if (device->flags & BM_FLAGS_POWER_CONTROL) {
status = bm_get_pm_capabilities(node);
if (ACPI_FAILURE(status)) {
goto end;
}
}
}
end:
if (ACPI_FAILURE(status)) {
acpi_os_free(node);
}
else {
/*
* Add to the node_list.
*/
node_list.nodes[node_list.count++] = node;
/*
* Formulate Hierarchy:
* --------------------
* Arrange within the namespace by assigning the parent and
* adding to the parent device's list of children (scope).
*/
if (!parent->scope.head) {
parent->scope.head = node;
}
else {
if (!parent->scope.tail) {
(parent->scope.head)->next = node;
}
else {
(parent->scope.tail)->next = node;
}
}
parent->scope.tail = node;
(*child) = node;
}
return_ACPI_STATUS(status);
}
/****************************************************************************
*
* FUNCTION: bm_enumerate_namespace
*
* PARAMETERS: <none>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_enumerate_namespace (void)
{
ACPI_STATUS status = AE_OK;
ACPI_HANDLE parent_handle = ACPI_ROOT_OBJECT;
ACPI_HANDLE child_handle = NULL;
BM_NODE *parent = NULL;
BM_NODE *child = NULL;
ACPI_OBJECT_TYPE acpi_type = 0;
u32 level = 1;
FUNCTION_TRACE("bm_enumerate_namespace");
parent = node_list.nodes[0];
/*
* Enumerate ACPI Namespace:
* -------------------------
* Parse through the ACPI namespace, identify all 'devices',
* and create a new entry for each in our collection.
*/
while (level > 0) {
/*
* Get the next object at this level.
*/
status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle, child_handle, &child_handle);
if (ACPI_SUCCESS(status)) {
/*
* TODO: This is a hack to get around the problem
* identifying scope objects. Scopes
* somehow need to be uniquely identified.
*/
status = acpi_get_type(child_handle, &acpi_type);
if (ACPI_SUCCESS(status) && (acpi_type == ACPI_TYPE_ANY)) {
status = acpi_get_next_object(ACPI_TYPE_ANY, child_handle, 0, NULL);
if (ACPI_SUCCESS(status)) {
acpi_type = INTERNAL_TYPE_SCOPE;
}
}
/*
* Device?
* -------
* If this object is a 'device', insert into the
* ACPI Bus Manager's local hierarchy and search
* the object's scope for any child devices (a
* depth-first search).
*/
switch (acpi_type) {
case INTERNAL_TYPE_SCOPE:
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_POWER:
status = bm_add_namespace_device(child_handle, acpi_type, parent, &child);
if (ACPI_SUCCESS(status)) {
status = acpi_get_next_object(ACPI_TYPE_ANY, child_handle, 0, NULL);
if (ACPI_SUCCESS(status)) {
level++;
parent_handle = child_handle;
child_handle = 0;
parent = child;
}
}
break;
}
}
/*
* Scope Exhausted:
* ----------------
* No more children in this object's scope, Go back up
* in the namespace tree to the object's parent.
*/
else {
level--;
child_handle = parent_handle;
acpi_get_parent(parent_handle,
&parent_handle);
if (parent) {
parent = parent->parent;
}
else {
return_ACPI_STATUS(AE_NULL_ENTRY);
}
}
}
return_ACPI_STATUS(AE_OK);
}
/****************************************************************************
*
* FUNCTION: bm_add_fixed_feature_device
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_add_fixed_feature_device (
BM_NODE *parent,
BM_DEVICE_TYPE device_type,
char *device_hid)
{
ACPI_STATUS status = AE_OK;
BM_NODE *node = NULL;
FUNCTION_TRACE("bm_add_fixed_feature_device");
if (!parent) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (node_list.count > BM_HANDLES_MAX) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/*
* Allocate the new device and add to the device array.
*/
node = acpi_os_callocate(sizeof(BM_NODE));
if (!node) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/*
* Get device info.
*/
node->device.handle = node_list.count;
node->device.acpi_handle = ACPI_ROOT_OBJECT;
node->device.id.type = BM_TYPE_FIXED_BUTTON;
if (device_hid) {
MEMCPY((void*)node->device.id.hid, device_hid,
sizeof(node->device.id.hid));
}
node->device.flags = BM_FLAGS_FIXED_FEATURE;
node->device.status = BM_STATUS_DEFAULT;
/* TODO: Device PM capabilities */
/*
* Add to the node_list.
*/
node_list.nodes[node_list.count++] = node;
/*
* Formulate Hierarchy:
* --------------------
* Arrange within the namespace by assigning the parent and
* adding to the parent device's list of children (scope).
*/
node->parent = parent;
node->next = NULL;
if (parent) {
if (!parent->scope.head) {
parent->scope.head = node;
}
else {
if (!parent->scope.tail) {
(parent->scope.head)->next = node;
}
else {
(parent->scope.tail)->next = node;
}
}
parent->scope.tail = node;
}
return_ACPI_STATUS(status);
}
/****************************************************************************
*
* FUNCTION: bm_enumerate_fixed_features
*
* PARAMETERS: <none>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_enumerate_fixed_features (void)
{
FUNCTION_TRACE("bm_enumerate_fixed_features");
/*
* Root Object:
* ------------
* Fabricate the root object, which happens to always get a
* device_handle of zero.
*/
node_list.nodes[0] = acpi_os_callocate(sizeof(BM_NODE));
if (NULL == (node_list.nodes[0])) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
node_list.nodes[0]->device.handle = BM_HANDLE_ROOT;
node_list.nodes[0]->device.acpi_handle = ACPI_ROOT_OBJECT;
node_list.nodes[0]->device.flags = BM_FLAGS_UNKNOWN;
node_list.nodes[0]->device.status = BM_STATUS_DEFAULT;
node_list.nodes[0]->device.id.type = BM_TYPE_SYSTEM;
/* TODO: Get system PM capabilities (Sx states?) */
node_list.count++;
/*
* Fixed Features:
* ---------------
* Enumerate fixed-feature devices (e.g. power and sleep buttons).
*/
if (acpi_fadt.pwr_button == 0) {
bm_add_fixed_feature_device(node_list.nodes[0],
BM_TYPE_FIXED_BUTTON, BM_HID_POWER_BUTTON);
}
if (acpi_fadt.sleep_button == 0) {
bm_add_fixed_feature_device(node_list.nodes[0],
BM_TYPE_FIXED_BUTTON, BM_HID_SLEEP_BUTTON);
}
return_ACPI_STATUS(AE_OK);
}
/****************************************************************************
*
* FUNCTION: bm_get_handle
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_get_handle (
ACPI_HANDLE acpi_handle,
BM_HANDLE *device_handle)
{
ACPI_STATUS status = AE_OK;
u32 i = 0;
FUNCTION_TRACE("bm_get_handle");
if (!device_handle) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
*device_handle = BM_HANDLE_UNKNOWN;
/*
* Search all devices for a match on the ACPI handle.
*/
for (i=0; i<node_list.count; i++) {
if (!node_list.nodes[i]) {
DEBUG_PRINT(ACPI_ERROR, ("Invalid (NULL) node entry [0x%02x] detected.\n", device_handle));
status = AE_NULL_ENTRY;
break;
}
if (node_list.nodes[i]->device.acpi_handle == acpi_handle) {
*device_handle = node_list.nodes[i]->device.handle;
break;
}
}
return_ACPI_STATUS(status);
}
/****************************************************************************
*
* FUNCTION: bm_get_node
*
* PARAMETERS: <TBD>
*
* RETURN: <TBD>
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_get_node (
BM_HANDLE device_handle,
ACPI_HANDLE acpi_handle,
BM_NODE **node)
{
ACPI_STATUS status = AE_OK;
FUNCTION_TRACE("bm_get_node");
if (!node) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* If no device handle, resolve acpi handle to device handle.
*/
if (!device_handle && acpi_handle) {
status = bm_get_handle(acpi_handle, &device_handle);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(status);
}
/*
* Valid device handle?
*/
if (device_handle > BM_HANDLES_MAX) {
DEBUG_PRINT(ACPI_ERROR, ("Invalid node handle [0x%02x] detected.\n", device_handle));
return_ACPI_STATUS(AE_ERROR);
}
*node = node_list.nodes[device_handle];
/*
* Valid node?
*/
if (!(*node)) {
DEBUG_PRINT(ACPI_ERROR, ("Invalid (NULL) node entry [0x%02x] detected.\n", device_handle));
return_ACPI_STATUS(AE_NULL_ENTRY);
}
return_ACPI_STATUS(AE_OK);
}
/****************************************************************************
* External Functions
****************************************************************************/
/****************************************************************************
*
* FUNCTION: bm_initialize
*
* PARAMETERS: <none>
*
* RETURN: Exception code.
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_initialize (void)
{
ACPI_STATUS status = AE_OK;
u32 start = 0;
u32 stop = 0;
u32 elapsed = 0;
FUNCTION_TRACE("bm_initialize");
MEMSET(&node_list, 0, sizeof(BM_HANDLE_LIST));
acpi_get_timer(&start);
DEBUG_PRINT(ACPI_INFO, ("Building device hierarchy.\n"));
/*
* Enumerate ACPI fixed-feature devices.
*/
status = bm_enumerate_fixed_features();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Enumerate the ACPI namespace.
*/
status = bm_enumerate_namespace();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_get_timer(&stop);
acpi_get_timer_duration(start, stop, &elapsed);
DEBUG_PRINT(ACPI_INFO, ("Device heirarchy build took [%d] microseconds.\n", elapsed));
/*
* Display hierarchy.
*/
#ifdef ACPI_DEBUG
bm_print_hierarchy();
#endif /*ACPI_DEBUG*/
/*
* Register for all standard and device-specific notifications.
*/
DEBUG_PRINT(ACPI_INFO, ("Registering for all device notifications.\n"));
status = acpi_install_notify_handler(ACPI_ROOT_OBJECT,
ACPI_SYSTEM_NOTIFY, &bm_notify, NULL);
if (ACPI_FAILURE(status)) {
DEBUG_PRINT(ACPI_ERROR, ("Unable to register for standard notifications.\n"));
return_ACPI_STATUS(status);
}
status = acpi_install_notify_handler(ACPI_ROOT_OBJECT,
ACPI_DEVICE_NOTIFY, &bm_notify, NULL);
if (ACPI_FAILURE(status)) {
DEBUG_PRINT(ACPI_ERROR, ("Unable to register for device-specific notifications.\n"));
return_ACPI_STATUS(status);
}
/*
* Initialize /proc interface.
*/
//DEBUG_PRINT(ACPI_INFO, ("Initializing /proc interface.\n"));
//status = bm_proc_initialize();
DEBUG_PRINT(ACPI_INFO, ("ACPI Bus Manager enabled.\n"));
/*
* Initialize built-in power resource driver.
*/
bm_pr_initialize();
return_ACPI_STATUS(status);
}
/****************************************************************************
*
* FUNCTION: bm_terminate
*
* PARAMETERS: <none>
*
* RETURN: Exception code.
*
* DESCRIPTION: <TBD>
*
****************************************************************************/
ACPI_STATUS
bm_terminate (void)
{
ACPI_STATUS status = AE_OK;
u32 i = 0;
FUNCTION_TRACE("bm_terminate");
/*
* Terminate built-in power resource driver.
*/
bm_pr_terminate();
/*
* Remove the /proc interface.
*/
//DEBUG_PRINT(ACPI_INFO, ("Removing /proc interface.\n"));
//status = bm_proc_terminate();
/*
* Unregister for all notifications.
*/
DEBUG_PRINT(ACPI_INFO, ("Unregistering for device notifications.\n"));
status = acpi_remove_notify_handler(ACPI_ROOT_OBJECT,
ACPI_SYSTEM_NOTIFY, &bm_notify);
if (ACPI_FAILURE(status)) {
DEBUG_PRINT(ACPI_ERROR, ("Unable to un-register for standard notifications.\n"));
}
status = acpi_remove_notify_handler(ACPI_ROOT_OBJECT,
ACPI_DEVICE_NOTIFY, &bm_notify);
if (ACPI_FAILURE(status)) {
DEBUG_PRINT(ACPI_ERROR, ("Unable to un-register for device-specific notifications.\n"));
}
/*
* Parse through the device array, freeing all entries.
*/
DEBUG_PRINT(ACPI_INFO, ("Removing device hierarchy.\n"));
for (i = 0; i < node_list.count; i++) {
if (node_list.nodes[i]) {
acpi_os_free(node_list.nodes[i]);
}
}
DEBUG_PRINT(ACPI_INFO, ("ACPI Bus Manager disabled.\n"));
return_ACPI_STATUS(AE_OK);
}
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