588 lines
17 KiB
C
588 lines
17 KiB
C
|
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
|
||
|
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* Module Name: evrgnini- ACPI address_space (op_region) init
|
||
|
|
*
|
||
|
|
* Copyright (C) 2000 - 2018, Intel Corp.
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
#include <acpi/acpi.h>
|
||
|
|
#include "accommon.h"
|
||
|
|
#include "acevents.h"
|
||
|
|
#include "acnamesp.h"
|
||
|
|
#include "acinterp.h"
|
||
|
|
|
||
|
|
#define _COMPONENT ACPI_EVENTS
|
||
|
|
ACPI_MODULE_NAME("evrgnini")
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ev_system_memory_region_setup
|
||
|
|
*
|
||
|
|
* PARAMETERS: handle - Region we are interested in
|
||
|
|
* function - Start or stop
|
||
|
|
* handler_context - Address space handler context
|
||
|
|
* region_context - Region specific context
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Setup a system_memory operation region
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
acpi_status
|
||
|
|
acpi_ev_system_memory_region_setup(acpi_handle handle,
|
||
|
|
u32 function,
|
||
|
|
void *handler_context, void **region_context)
|
||
|
|
{
|
||
|
|
union acpi_operand_object *region_desc =
|
||
|
|
(union acpi_operand_object *)handle;
|
||
|
|
struct acpi_mem_space_context *local_region_context;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(ev_system_memory_region_setup);
|
||
|
|
|
||
|
|
if (function == ACPI_REGION_DEACTIVATE) {
|
||
|
|
if (*region_context) {
|
||
|
|
local_region_context =
|
||
|
|
(struct acpi_mem_space_context *)*region_context;
|
||
|
|
|
||
|
|
/* Delete a cached mapping if present */
|
||
|
|
|
||
|
|
if (local_region_context->mapped_length) {
|
||
|
|
acpi_os_unmap_memory(local_region_context->
|
||
|
|
mapped_logical_address,
|
||
|
|
local_region_context->
|
||
|
|
mapped_length);
|
||
|
|
}
|
||
|
|
ACPI_FREE(local_region_context);
|
||
|
|
*region_context = NULL;
|
||
|
|
}
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Create a new context */
|
||
|
|
|
||
|
|
local_region_context =
|
||
|
|
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_mem_space_context));
|
||
|
|
if (!(local_region_context)) {
|
||
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Save the region length and address for use in the handler */
|
||
|
|
|
||
|
|
local_region_context->length = region_desc->region.length;
|
||
|
|
local_region_context->address = region_desc->region.address;
|
||
|
|
|
||
|
|
*region_context = local_region_context;
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ev_io_space_region_setup
|
||
|
|
*
|
||
|
|
* PARAMETERS: handle - Region we are interested in
|
||
|
|
* function - Start or stop
|
||
|
|
* handler_context - Address space handler context
|
||
|
|
* region_context - Region specific context
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Setup a IO operation region
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_ev_io_space_region_setup(acpi_handle handle,
|
||
|
|
u32 function,
|
||
|
|
void *handler_context, void **region_context)
|
||
|
|
{
|
||
|
|
ACPI_FUNCTION_TRACE(ev_io_space_region_setup);
|
||
|
|
|
||
|
|
if (function == ACPI_REGION_DEACTIVATE) {
|
||
|
|
*region_context = NULL;
|
||
|
|
} else {
|
||
|
|
*region_context = handler_context;
|
||
|
|
}
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ev_pci_config_region_setup
|
||
|
|
*
|
||
|
|
* PARAMETERS: handle - Region we are interested in
|
||
|
|
* function - Start or stop
|
||
|
|
* handler_context - Address space handler context
|
||
|
|
* region_context - Region specific context
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Setup a PCI_Config operation region
|
||
|
|
*
|
||
|
|
* MUTEX: Assumes namespace is not locked
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_ev_pci_config_region_setup(acpi_handle handle,
|
||
|
|
u32 function,
|
||
|
|
void *handler_context, void **region_context)
|
||
|
|
{
|
||
|
|
acpi_status status = AE_OK;
|
||
|
|
u64 pci_value;
|
||
|
|
struct acpi_pci_id *pci_id = *region_context;
|
||
|
|
union acpi_operand_object *handler_obj;
|
||
|
|
struct acpi_namespace_node *parent_node;
|
||
|
|
struct acpi_namespace_node *pci_root_node;
|
||
|
|
struct acpi_namespace_node *pci_device_node;
|
||
|
|
union acpi_operand_object *region_obj =
|
||
|
|
(union acpi_operand_object *)handle;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(ev_pci_config_region_setup);
|
||
|
|
|
||
|
|
handler_obj = region_obj->region.handler;
|
||
|
|
if (!handler_obj) {
|
||
|
|
/*
|
||
|
|
* No installed handler. This shouldn't happen because the dispatch
|
||
|
|
* routine checks before we get here, but we check again just in case.
|
||
|
|
*/
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
|
||
|
|
"Attempting to init a region %p, with no handler\n",
|
||
|
|
region_obj));
|
||
|
|
return_ACPI_STATUS(AE_NOT_EXIST);
|
||
|
|
}
|
||
|
|
|
||
|
|
*region_context = NULL;
|
||
|
|
if (function == ACPI_REGION_DEACTIVATE) {
|
||
|
|
if (pci_id) {
|
||
|
|
ACPI_FREE(pci_id);
|
||
|
|
}
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
parent_node = region_obj->region.node->parent;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get the _SEG and _BBN values from the device upon which the handler
|
||
|
|
* is installed.
|
||
|
|
*
|
||
|
|
* We need to get the _SEG and _BBN objects relative to the PCI BUS device.
|
||
|
|
* This is the device the handler has been registered to handle.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If the address_space.Node is still pointing to the root, we need
|
||
|
|
* to scan upward for a PCI Root bridge and re-associate the op_region
|
||
|
|
* handlers with that device.
|
||
|
|
*/
|
||
|
|
if (handler_obj->address_space.node == acpi_gbl_root_node) {
|
||
|
|
|
||
|
|
/* Start search from the parent object */
|
||
|
|
|
||
|
|
pci_root_node = parent_node;
|
||
|
|
while (pci_root_node != acpi_gbl_root_node) {
|
||
|
|
|
||
|
|
/* Get the _HID/_CID in order to detect a root_bridge */
|
||
|
|
|
||
|
|
if (acpi_ev_is_pci_root_bridge(pci_root_node)) {
|
||
|
|
|
||
|
|
/* Install a handler for this PCI root bridge */
|
||
|
|
|
||
|
|
status = acpi_install_address_space_handler((acpi_handle)pci_root_node, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
if (status == AE_SAME_HANDLER) {
|
||
|
|
/*
|
||
|
|
* It is OK if the handler is already installed on the
|
||
|
|
* root bridge. Still need to return a context object
|
||
|
|
* for the new PCI_Config operation region, however.
|
||
|
|
*/
|
||
|
|
status = AE_OK;
|
||
|
|
} else {
|
||
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
||
|
|
"Could not install PciConfig handler "
|
||
|
|
"for Root Bridge %4.4s",
|
||
|
|
acpi_ut_get_node_name
|
||
|
|
(pci_root_node)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
pci_root_node = pci_root_node->parent;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* PCI root bridge not found, use namespace root node */
|
||
|
|
} else {
|
||
|
|
pci_root_node = handler_obj->address_space.node;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If this region is now initialized, we are done.
|
||
|
|
* (install_address_space_handler could have initialized it)
|
||
|
|
*/
|
||
|
|
if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Region is still not initialized. Create a new context */
|
||
|
|
|
||
|
|
pci_id = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pci_id));
|
||
|
|
if (!pci_id) {
|
||
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* For PCI_Config space access, we need the segment, bus, device and
|
||
|
|
* function numbers. Acquire them here.
|
||
|
|
*
|
||
|
|
* Find the parent device object. (This allows the operation region to be
|
||
|
|
* within a subscope under the device, such as a control method.)
|
||
|
|
*/
|
||
|
|
pci_device_node = region_obj->region.node;
|
||
|
|
while (pci_device_node && (pci_device_node->type != ACPI_TYPE_DEVICE)) {
|
||
|
|
pci_device_node = pci_device_node->parent;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!pci_device_node) {
|
||
|
|
ACPI_FREE(pci_id);
|
||
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get the PCI device and function numbers from the _ADR object
|
||
|
|
* contained in the parent's scope.
|
||
|
|
*/
|
||
|
|
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR,
|
||
|
|
pci_device_node, &pci_value);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The default is zero, and since the allocation above zeroed the data,
|
||
|
|
* just do nothing on failure.
|
||
|
|
*/
|
||
|
|
if (ACPI_SUCCESS(status)) {
|
||
|
|
pci_id->device = ACPI_HIWORD(ACPI_LODWORD(pci_value));
|
||
|
|
pci_id->function = ACPI_LOWORD(ACPI_LODWORD(pci_value));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* The PCI segment number comes from the _SEG method */
|
||
|
|
|
||
|
|
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__SEG,
|
||
|
|
pci_root_node, &pci_value);
|
||
|
|
if (ACPI_SUCCESS(status)) {
|
||
|
|
pci_id->segment = ACPI_LOWORD(pci_value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* The PCI bus number comes from the _BBN method */
|
||
|
|
|
||
|
|
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__BBN,
|
||
|
|
pci_root_node, &pci_value);
|
||
|
|
if (ACPI_SUCCESS(status)) {
|
||
|
|
pci_id->bus = ACPI_LOWORD(pci_value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Complete/update the PCI ID for this device */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_hw_derive_pci_id(pci_id, pci_root_node,
|
||
|
|
region_obj->region.node);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
ACPI_FREE(pci_id);
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
*region_context = pci_id;
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ev_is_pci_root_bridge
|
||
|
|
*
|
||
|
|
* PARAMETERS: node - Device node being examined
|
||
|
|
*
|
||
|
|
* RETURN: TRUE if device is a PCI/PCI-Express Root Bridge
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Determine if the input device represents a PCI Root Bridge by
|
||
|
|
* examining the _HID and _CID for the device.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
struct acpi_pnp_device_id *hid;
|
||
|
|
struct acpi_pnp_device_id_list *cid;
|
||
|
|
u32 i;
|
||
|
|
u8 match;
|
||
|
|
|
||
|
|
/* Get the _HID and check for a PCI Root Bridge */
|
||
|
|
|
||
|
|
status = acpi_ut_execute_HID(node, &hid);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
match = acpi_ut_is_pci_root_bridge(hid->string);
|
||
|
|
ACPI_FREE(hid);
|
||
|
|
|
||
|
|
if (match) {
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* The _HID did not match. Get the _CID and check for a PCI Root Bridge */
|
||
|
|
|
||
|
|
status = acpi_ut_execute_CID(node, &cid);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check all _CIDs in the returned list */
|
||
|
|
|
||
|
|
for (i = 0; i < cid->count; i++) {
|
||
|
|
if (acpi_ut_is_pci_root_bridge(cid->ids[i].string)) {
|
||
|
|
ACPI_FREE(cid);
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_FREE(cid);
|
||
|
|
return (FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ev_pci_bar_region_setup
|
||
|
|
*
|
||
|
|
* PARAMETERS: handle - Region we are interested in
|
||
|
|
* function - Start or stop
|
||
|
|
* handler_context - Address space handler context
|
||
|
|
* region_context - Region specific context
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Setup a pci_BAR operation region
|
||
|
|
*
|
||
|
|
* MUTEX: Assumes namespace is not locked
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_ev_pci_bar_region_setup(acpi_handle handle,
|
||
|
|
u32 function,
|
||
|
|
void *handler_context, void **region_context)
|
||
|
|
{
|
||
|
|
ACPI_FUNCTION_TRACE(ev_pci_bar_region_setup);
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ev_cmos_region_setup
|
||
|
|
*
|
||
|
|
* PARAMETERS: handle - Region we are interested in
|
||
|
|
* function - Start or stop
|
||
|
|
* handler_context - Address space handler context
|
||
|
|
* region_context - Region specific context
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Setup a CMOS operation region
|
||
|
|
*
|
||
|
|
* MUTEX: Assumes namespace is not locked
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_ev_cmos_region_setup(acpi_handle handle,
|
||
|
|
u32 function,
|
||
|
|
void *handler_context, void **region_context)
|
||
|
|
{
|
||
|
|
ACPI_FUNCTION_TRACE(ev_cmos_region_setup);
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ev_default_region_setup
|
||
|
|
*
|
||
|
|
* PARAMETERS: handle - Region we are interested in
|
||
|
|
* function - Start or stop
|
||
|
|
* handler_context - Address space handler context
|
||
|
|
* region_context - Region specific context
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Default region initialization
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_ev_default_region_setup(acpi_handle handle,
|
||
|
|
u32 function,
|
||
|
|
void *handler_context, void **region_context)
|
||
|
|
{
|
||
|
|
ACPI_FUNCTION_TRACE(ev_default_region_setup);
|
||
|
|
|
||
|
|
if (function == ACPI_REGION_DEACTIVATE) {
|
||
|
|
*region_context = NULL;
|
||
|
|
} else {
|
||
|
|
*region_context = handler_context;
|
||
|
|
}
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ev_initialize_region
|
||
|
|
*
|
||
|
|
* PARAMETERS: region_obj - Region we are initializing
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Initializes the region, finds any _REG methods and saves them
|
||
|
|
* for execution at a later time
|
||
|
|
*
|
||
|
|
* Get the appropriate address space handler for a newly
|
||
|
|
* created region.
|
||
|
|
*
|
||
|
|
* This also performs address space specific initialization. For
|
||
|
|
* example, PCI regions must have an _ADR object that contains
|
||
|
|
* a PCI address in the scope of the definition. This address is
|
||
|
|
* required to perform an access to PCI config space.
|
||
|
|
*
|
||
|
|
* MUTEX: Interpreter should be unlocked, because we may run the _REG
|
||
|
|
* method for this region.
|
||
|
|
*
|
||
|
|
* NOTE: Possible incompliance:
|
||
|
|
* There is a behavior conflict in automatic _REG execution:
|
||
|
|
* 1. When the interpreter is evaluating a method, we can only
|
||
|
|
* automatically run _REG for the following case:
|
||
|
|
* operation_region (OPR1, 0x80, 0x1000010, 0x4)
|
||
|
|
* 2. When the interpreter is loading a table, we can also
|
||
|
|
* automatically run _REG for the following case:
|
||
|
|
* operation_region (OPR1, 0x80, 0x1000010, 0x4)
|
||
|
|
* Though this may not be compliant to the de-facto standard, the
|
||
|
|
* logic is kept in order not to trigger regressions. And keeping
|
||
|
|
* this logic should be taken care by the caller of this function.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status acpi_ev_initialize_region(union acpi_operand_object *region_obj)
|
||
|
|
{
|
||
|
|
union acpi_operand_object *handler_obj;
|
||
|
|
union acpi_operand_object *obj_desc;
|
||
|
|
acpi_adr_space_type space_id;
|
||
|
|
struct acpi_namespace_node *node;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(ev_initialize_region);
|
||
|
|
|
||
|
|
if (!region_obj) {
|
||
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (region_obj->common.flags & AOPOBJ_OBJECT_INITIALIZED) {
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
region_obj->common.flags |= AOPOBJ_OBJECT_INITIALIZED;
|
||
|
|
|
||
|
|
node = region_obj->region.node->parent;
|
||
|
|
space_id = region_obj->region.space_id;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The following loop depends upon the root Node having no parent
|
||
|
|
* ie: acpi_gbl_root_node->Parent being set to NULL
|
||
|
|
*/
|
||
|
|
while (node) {
|
||
|
|
|
||
|
|
/* Check to see if a handler exists */
|
||
|
|
|
||
|
|
handler_obj = NULL;
|
||
|
|
obj_desc = acpi_ns_get_attached_object(node);
|
||
|
|
if (obj_desc) {
|
||
|
|
|
||
|
|
/* Can only be a handler if the object exists */
|
||
|
|
|
||
|
|
switch (node->type) {
|
||
|
|
case ACPI_TYPE_DEVICE:
|
||
|
|
case ACPI_TYPE_PROCESSOR:
|
||
|
|
case ACPI_TYPE_THERMAL:
|
||
|
|
|
||
|
|
handler_obj = obj_desc->common_notify.handler;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_TYPE_METHOD:
|
||
|
|
/*
|
||
|
|
* If we are executing module level code, the original
|
||
|
|
* Node's object was replaced by this Method object and we
|
||
|
|
* saved the handler in the method object.
|
||
|
|
*
|
||
|
|
* Note: Only used for the legacy MLC support. Will
|
||
|
|
* be removed in the future.
|
||
|
|
*
|
||
|
|
* See acpi_ns_exec_module_code
|
||
|
|
*/
|
||
|
|
if (!acpi_gbl_execute_tables_as_methods &&
|
||
|
|
obj_desc->method.
|
||
|
|
info_flags & ACPI_METHOD_MODULE_LEVEL) {
|
||
|
|
handler_obj =
|
||
|
|
obj_desc->method.dispatch.handler;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
|
||
|
|
/* Ignore other objects */
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
handler_obj =
|
||
|
|
acpi_ev_find_region_handler(space_id, handler_obj);
|
||
|
|
if (handler_obj) {
|
||
|
|
|
||
|
|
/* Found correct handler */
|
||
|
|
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
|
||
|
|
"Found handler %p for region %p in obj %p\n",
|
||
|
|
handler_obj, region_obj,
|
||
|
|
obj_desc));
|
||
|
|
|
||
|
|
(void)acpi_ev_attach_region(handler_obj,
|
||
|
|
region_obj, FALSE);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Tell all users that this region is usable by
|
||
|
|
* running the _REG method
|
||
|
|
*/
|
||
|
|
acpi_ex_exit_interpreter();
|
||
|
|
(void)acpi_ev_execute_reg_method(region_obj,
|
||
|
|
ACPI_REG_CONNECT);
|
||
|
|
acpi_ex_enter_interpreter();
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* This node does not have the handler we need; Pop up one level */
|
||
|
|
|
||
|
|
node = node->parent;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If we get here, there is no handler for this region. This is not
|
||
|
|
* fatal because many regions get created before a handler is installed
|
||
|
|
* for said region.
|
||
|
|
*/
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
|
||
|
|
"No handler for RegionType %s(%X) (RegionObj %p)\n",
|
||
|
|
acpi_ut_get_region_name(space_id), space_id,
|
||
|
|
region_obj));
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|