mirror of https://gitee.com/openkylin/linux.git
446 lines
12 KiB
C
446 lines
12 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: nsinit - namespace initialization
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2006, R. Byron Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include <acpi/acnamesp.h>
|
|
#include <acpi/acdispat.h>
|
|
#include <acpi/acinterp.h>
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME("nsinit")
|
|
|
|
/* Local prototypes */
|
|
static acpi_status
|
|
acpi_ns_init_one_object(acpi_handle obj_handle,
|
|
u32 level, void *context, void **return_value);
|
|
|
|
static acpi_status
|
|
acpi_ns_init_one_device(acpi_handle obj_handle,
|
|
u32 nesting_level, void *context, void **return_value);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_initialize_objects
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Walk the entire namespace and perform any necessary
|
|
* initialization on the objects found therein
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ns_initialize_objects(void)
|
|
{
|
|
acpi_status status;
|
|
struct acpi_init_walk_info info;
|
|
|
|
ACPI_FUNCTION_TRACE("ns_initialize_objects");
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"**** Starting initialization of namespace objects ****\n"));
|
|
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
|
|
"Completing Region/Field/Buffer/Package initialization:"));
|
|
|
|
/* Set all init info to zero */
|
|
|
|
ACPI_MEMSET(&info, 0, sizeof(struct acpi_init_walk_info));
|
|
|
|
/* Walk entire namespace from the supplied root */
|
|
|
|
status = acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
|
|
ACPI_UINT32_MAX, acpi_ns_init_one_object,
|
|
&info, NULL);
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_EXCEPTION((AE_INFO, status, "During walk_namespace"));
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
|
|
"\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n",
|
|
info.op_region_init, info.op_region_count,
|
|
info.field_init, info.field_count,
|
|
info.buffer_init, info.buffer_count,
|
|
info.package_init, info.package_count,
|
|
info.object_count));
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"%hd Control Methods found\n", info.method_count));
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"%hd Op Regions found\n", info.op_region_count));
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_initialize_devices
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: acpi_status
|
|
*
|
|
* DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
|
|
* This means running _INI on all present devices.
|
|
*
|
|
* Note: We install PCI config space handler on region access,
|
|
* not here.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ns_initialize_devices(void)
|
|
{
|
|
acpi_status status;
|
|
struct acpi_device_walk_info info;
|
|
|
|
ACPI_FUNCTION_TRACE("ns_initialize_devices");
|
|
|
|
/* Init counters */
|
|
|
|
info.device_count = 0;
|
|
info.num_STA = 0;
|
|
info.num_INI = 0;
|
|
|
|
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
|
|
"Executing all Device _STA and_INI methods:"));
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Walk namespace for all objects */
|
|
|
|
status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
|
|
ACPI_UINT32_MAX, TRUE,
|
|
acpi_ns_init_one_device, &info, NULL);
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_EXCEPTION((AE_INFO, status, "During walk_namespace"));
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
|
|
"\n%hd Devices found - executed %hd _STA, %hd _INI methods\n",
|
|
info.device_count, info.num_STA, info.num_INI));
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_init_one_object
|
|
*
|
|
* PARAMETERS: obj_handle - Node
|
|
* Level - Current nesting level
|
|
* Context - Points to a init info struct
|
|
* return_value - Not used
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
|
|
* within the namespace.
|
|
*
|
|
* Currently, the only objects that require initialization are:
|
|
* 1) Methods
|
|
* 2) Op Regions
|
|
*
|
|
******************************************************************************/
|
|
|
|
static acpi_status
|
|
acpi_ns_init_one_object(acpi_handle obj_handle,
|
|
u32 level, void *context, void **return_value)
|
|
{
|
|
acpi_object_type type;
|
|
acpi_status status;
|
|
struct acpi_init_walk_info *info =
|
|
(struct acpi_init_walk_info *)context;
|
|
struct acpi_namespace_node *node =
|
|
(struct acpi_namespace_node *)obj_handle;
|
|
union acpi_operand_object *obj_desc;
|
|
|
|
ACPI_FUNCTION_NAME("ns_init_one_object");
|
|
|
|
info->object_count++;
|
|
|
|
/* And even then, we are only interested in a few object types */
|
|
|
|
type = acpi_ns_get_type(obj_handle);
|
|
obj_desc = acpi_ns_get_attached_object(node);
|
|
if (!obj_desc) {
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Increment counters for object types we are looking for */
|
|
|
|
switch (type) {
|
|
case ACPI_TYPE_REGION:
|
|
info->op_region_count++;
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
info->field_count++;
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
info->buffer_count++;
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
info->package_count++;
|
|
break;
|
|
|
|
default:
|
|
|
|
/* No init required, just exit now */
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* If the object is already initialized, nothing else to do
|
|
*/
|
|
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Must lock the interpreter before executing AML code
|
|
*/
|
|
status = acpi_ex_enter_interpreter();
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Each of these types can contain executable AML code within the
|
|
* declaration.
|
|
*/
|
|
switch (type) {
|
|
case ACPI_TYPE_REGION:
|
|
|
|
info->op_region_init++;
|
|
status = acpi_ds_get_region_arguments(obj_desc);
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
info->field_init++;
|
|
status = acpi_ds_get_buffer_field_arguments(obj_desc);
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
info->buffer_init++;
|
|
status = acpi_ds_get_buffer_arguments(obj_desc);
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
|
|
info->package_init++;
|
|
status = acpi_ds_get_package_arguments(obj_desc);
|
|
break;
|
|
|
|
default:
|
|
/* No other types can get here */
|
|
break;
|
|
}
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
"Could not execute arguments for [%4.4s] (%s)",
|
|
acpi_ut_get_node_name(node),
|
|
acpi_ut_get_type_name(type)));
|
|
}
|
|
|
|
/*
|
|
* Print a dot for each object unless we are going to print the entire
|
|
* pathname
|
|
*/
|
|
if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
|
|
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
|
|
}
|
|
|
|
/*
|
|
* We ignore errors from above, and always return OK, since we don't want
|
|
* to abort the walk on any single error.
|
|
*/
|
|
acpi_ex_exit_interpreter();
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_init_one_device
|
|
*
|
|
* PARAMETERS: acpi_walk_callback
|
|
*
|
|
* RETURN: acpi_status
|
|
*
|
|
* DESCRIPTION: This is called once per device soon after ACPI is enabled
|
|
* to initialize each device. It determines if the device is
|
|
* present, and if so, calls _INI.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static acpi_status
|
|
acpi_ns_init_one_device(acpi_handle obj_handle,
|
|
u32 nesting_level, void *context, void **return_value)
|
|
{
|
|
struct acpi_device_walk_info *info =
|
|
(struct acpi_device_walk_info *)context;
|
|
struct acpi_parameter_info pinfo;
|
|
u32 flags;
|
|
acpi_status status;
|
|
struct acpi_namespace_node *ini_node;
|
|
struct acpi_namespace_node *device_node;
|
|
|
|
ACPI_FUNCTION_TRACE("ns_init_one_device");
|
|
|
|
device_node = acpi_ns_map_handle_to_node(obj_handle);
|
|
if (!device_node) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* We will run _STA/_INI on Devices, Processors and thermal_zones only
|
|
*/
|
|
if ((device_node->type != ACPI_TYPE_DEVICE) &&
|
|
(device_node->type != ACPI_TYPE_PROCESSOR) &&
|
|
(device_node->type != ACPI_TYPE_THERMAL)) {
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) &&
|
|
(!(acpi_dbg_level & ACPI_LV_INFO))) {
|
|
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
|
|
}
|
|
|
|
info->device_count++;
|
|
|
|
/*
|
|
* Check if the _INI method exists for this device -
|
|
* if _INI does not exist, there is no need to run _STA
|
|
* No _INI means device requires no initialization
|
|
*/
|
|
status = acpi_ns_search_node(*ACPI_CAST_PTR(u32, METHOD_NAME__INI),
|
|
device_node, ACPI_TYPE_METHOD, &ini_node);
|
|
if (ACPI_FAILURE(status)) {
|
|
/* No _INI method found - move on to next device */
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Run _STA to determine if we can run _INI on the device -
|
|
* the device must be present before _INI can be run.
|
|
* However, _STA is not required - assume device present if no _STA
|
|
*/
|
|
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD,
|
|
device_node,
|
|
METHOD_NAME__STA));
|
|
|
|
pinfo.node = device_node;
|
|
pinfo.parameters = NULL;
|
|
pinfo.parameter_type = ACPI_PARAM_ARGS;
|
|
|
|
status = acpi_ut_execute_STA(pinfo.node, &flags);
|
|
if (ACPI_FAILURE(status)) {
|
|
/* Ignore error and move on to next device */
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
if (flags != ACPI_UINT32_MAX) {
|
|
info->num_STA++;
|
|
}
|
|
|
|
if (!(flags & ACPI_STA_DEVICE_PRESENT)) {
|
|
/* Don't look at children of a not present device */
|
|
|
|
return_ACPI_STATUS(AE_CTRL_DEPTH);
|
|
}
|
|
|
|
/*
|
|
* The device is present and _INI exists. Run the _INI method.
|
|
* (We already have the _INI node from above)
|
|
*/
|
|
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD,
|
|
pinfo.node,
|
|
METHOD_NAME__INI));
|
|
|
|
pinfo.node = ini_node;
|
|
status = acpi_ns_evaluate_by_handle(&pinfo);
|
|
if (ACPI_FAILURE(status)) {
|
|
/* Ignore error and move on to next device */
|
|
|
|
#ifdef ACPI_DEBUG_OUTPUT
|
|
char *scope_name = acpi_ns_get_external_pathname(ini_node);
|
|
|
|
ACPI_WARNING((AE_INFO, "%s._INI failed: %s",
|
|
scope_name, acpi_format_exception(status)));
|
|
|
|
ACPI_MEM_FREE(scope_name);
|
|
#endif
|
|
} else {
|
|
/* Delete any return object (especially if implicit_return is enabled) */
|
|
|
|
if (pinfo.return_object) {
|
|
acpi_ut_remove_reference(pinfo.return_object);
|
|
}
|
|
|
|
/* Count of successful INIs */
|
|
|
|
info->num_INI++;
|
|
}
|
|
|
|
if (acpi_gbl_init_handler) {
|
|
/* External initialization handler is present, call it */
|
|
|
|
status =
|
|
acpi_gbl_init_handler(pinfo.node, ACPI_INIT_DEVICE_INI);
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|