From a91cdde20a870bd773d605c764ed211539bf3020 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 16 Nov 2011 14:46:57 +0800 Subject: ACPI 5.0: New interface, acpi_get_event_resources Executes _AEI and formats the result, similar to acpi_get_current_resources, etc. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/acresrc.h | 4 ++++ drivers/acpi/acpica/rsutils.c | 50 +++++++++++++++++++++++++++++++++++++++++++ drivers/acpi/acpica/rsxface.c | 40 ++++++++++++++++++++++++++++++++++ 3 files changed, 94 insertions(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h index 05721b023f8..61b2e049d8d 100644 --- a/drivers/acpi/acpica/acresrc.h +++ b/drivers/acpi/acpica/acresrc.h @@ -215,6 +215,10 @@ acpi_status acpi_rs_set_srs_method_data(struct acpi_namespace_node *node, struct acpi_buffer *ret_buffer); +acpi_status +acpi_rs_get_aei_method_data(struct acpi_namespace_node *node, + struct acpi_buffer *ret_buffer); + /* * rscalc */ diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c index 4409db8209d..54a9a974b62 100644 --- a/drivers/acpi/acpica/rsutils.c +++ b/drivers/acpi/acpica/rsutils.c @@ -592,6 +592,56 @@ acpi_rs_get_prs_method_data(struct acpi_namespace_node *node, } #endif /* ACPI_FUTURE_USAGE */ +/******************************************************************************* + * + * FUNCTION: acpi_rs_get_aei_method_data + * + * PARAMETERS: Node - Device node + * ret_buffer - Pointer to a buffer structure for the + * results + * + * RETURN: Status + * + * DESCRIPTION: This function is called to get the _AEI value of an object + * contained in an object specified by the handle passed in + * + * If the function fails an appropriate status will be returned + * and the contents of the callers buffer is undefined. + * + ******************************************************************************/ + +acpi_status +acpi_rs_get_aei_method_data(struct acpi_namespace_node *node, + struct acpi_buffer *ret_buffer) +{ + union acpi_operand_object *obj_desc; + acpi_status status; + + ACPI_FUNCTION_TRACE(rs_get_aei_method_data); + + /* Parameters guaranteed valid by caller */ + + /* Execute the method, no parameters */ + + status = acpi_ut_evaluate_object(node, METHOD_NAME__AEI, + ACPI_BTYPE_BUFFER, &obj_desc); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* + * Make the call to create a resource linked list from the + * byte stream buffer that comes back from the _CRS method + * execution. + */ + status = acpi_rs_create_resource_list(obj_desc, ret_buffer); + + /* On exit, we must delete the object returned by evaluate_object */ + + acpi_ut_remove_reference(obj_desc); + return_ACPI_STATUS(status); +} + /******************************************************************************* * * FUNCTION: acpi_rs_get_method_data diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c index fe86b37b16c..45a9e5e4e4d 100644 --- a/drivers/acpi/acpica/rsxface.c +++ b/drivers/acpi/acpica/rsxface.c @@ -307,6 +307,46 @@ acpi_set_current_resources(acpi_handle device_handle, ACPI_EXPORT_SYMBOL(acpi_set_current_resources) +/******************************************************************************* + * + * FUNCTION: acpi_get_event_resources + * + * PARAMETERS: device_handle - Handle to the device object for the + * device we are getting resources + * in_buffer - Pointer to a buffer containing the + * resources to be set for the device + * + * RETURN: Status + * + * DESCRIPTION: This function is called to get the event resources for a + * specific device. The caller must first acquire a handle for + * the desired device. The resource data is passed to the routine + * the buffer pointed to by the in_buffer variable. Uses the + * _AEI method. + * + ******************************************************************************/ +acpi_status +acpi_get_event_resources(acpi_handle device_handle, + struct acpi_buffer *ret_buffer) +{ + acpi_status status; + struct acpi_namespace_node *node; + + ACPI_FUNCTION_TRACE(acpi_get_event_resources); + + /* Validate parameters then dispatch to internal routine */ + + status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + status = acpi_rs_get_aei_method_data(node, ret_buffer); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_get_event_resources) + /****************************************************************************** * * FUNCTION: acpi_resource_to_address64 -- cgit v1.2.3-70-g09d2