ACPICA: Split large file, evgpeblk
Create two new files, evgpeinit.c and evgpeutil.c. Updated unix and linux makefiles. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
parent
186c307f00
commit
3fe50208b2
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@ -14,7 +14,7 @@ acpi-y := dsfield.o dsmthdat.o dsopcode.o dswexec.o dswscope.o \
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acpi-y += evevent.o evregion.o evsci.o evxfevnt.o \
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evmisc.o evrgnini.o evxface.o evxfregn.o \
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evgpe.o evgpeblk.o
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evgpe.o evgpeblk.o evgpeinit.o evgpeutil.o
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acpi-y += exconfig.o exfield.o exnames.o exoparg6.o exresolv.o exstorob.o\
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exconvrt.o exfldio.o exoparg1.o exprep.o exresop.o exsystem.o\
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@ -73,8 +73,10 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node *node,
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u32 notify_value);
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/*
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* evgpe - GPE handling and dispatch
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* evgpe - Low-level GPE support
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*/
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u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list);
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acpi_status
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acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info);
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@ -90,18 +92,8 @@ struct acpi_gpe_event_info *acpi_ev_low_get_gpe_info(u32 gpe_number,
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*gpe_block);
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/*
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* evgpeblk
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* evgpeblk - Upper-level GPE block support
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*/
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u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info);
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acpi_status
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acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context);
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acpi_status
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acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
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struct acpi_gpe_block_info *gpe_block,
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void *context);
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acpi_status
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acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
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struct acpi_generic_address *gpe_block_address,
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@ -110,8 +102,6 @@ acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
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u32 interrupt_number,
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struct acpi_gpe_block_info **return_gpe_block);
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void acpi_ev_update_gpes(acpi_owner_id table_owner_id);
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acpi_status
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acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
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struct acpi_gpe_block_info *gpe_block);
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@ -122,10 +112,38 @@ u32
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acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info,
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u32 gpe_number);
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u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list);
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/*
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* evgpeinit - GPE initialization and update
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*/
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acpi_status acpi_ev_gpe_initialize(void);
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void acpi_ev_update_gpes(acpi_owner_id table_owner_id);
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acpi_status
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acpi_ev_match_gpe_method(acpi_handle obj_handle,
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u32 level, void *context, void **return_value);
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acpi_status
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acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
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u32 level, void *context, void **return_value);
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/*
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* evgpeutil - GPE utilities
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*/
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acpi_status
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acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context);
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u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info);
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struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number);
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acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt);
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acpi_status
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acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
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struct acpi_gpe_block_info *gpe_block,
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void *context);
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/*
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* evregion - Address Space handling
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*/
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@ -45,26 +45,11 @@
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#include "accommon.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#include "acinterp.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME("evgpeblk")
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/* Local prototypes */
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static acpi_status
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acpi_ev_match_gpe_method(acpi_handle obj_handle,
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u32 level, void *obj_desc, void **return_value);
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static acpi_status
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acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
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u32 level, void *info, void **return_value);
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static struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32
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interrupt_number);
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static acpi_status
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acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt);
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static acpi_status
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acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
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u32 interrupt_number);
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@ -72,632 +57,6 @@ acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
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static acpi_status
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acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ev_valid_gpe_event
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*
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* PARAMETERS: gpe_event_info - Info for this GPE
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*
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* RETURN: TRUE if the gpe_event is valid
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*
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* DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL.
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* Should be called only when the GPE lists are semaphore locked
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* and not subject to change.
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*
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******************************************************************************/
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u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
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{
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struct acpi_gpe_xrupt_info *gpe_xrupt_block;
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struct acpi_gpe_block_info *gpe_block;
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ACPI_FUNCTION_ENTRY();
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/* No need for spin lock since we are not changing any list elements */
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/* Walk the GPE interrupt levels */
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gpe_xrupt_block = acpi_gbl_gpe_xrupt_list_head;
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while (gpe_xrupt_block) {
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gpe_block = gpe_xrupt_block->gpe_block_list_head;
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/* Walk the GPE blocks on this interrupt level */
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while (gpe_block) {
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if ((&gpe_block->event_info[0] <= gpe_event_info) &&
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(&gpe_block->event_info[gpe_block->gpe_count] >
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gpe_event_info)) {
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return (TRUE);
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}
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gpe_block = gpe_block->next;
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}
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gpe_xrupt_block = gpe_xrupt_block->next;
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}
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return (FALSE);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ev_walk_gpe_list
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*
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* PARAMETERS: gpe_walk_callback - Routine called for each GPE block
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* Context - Value passed to callback
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*
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* RETURN: Status
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*
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* DESCRIPTION: Walk the GPE lists.
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*
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******************************************************************************/
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acpi_status
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acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context)
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{
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struct acpi_gpe_block_info *gpe_block;
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struct acpi_gpe_xrupt_info *gpe_xrupt_info;
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acpi_status status = AE_OK;
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acpi_cpu_flags flags;
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ACPI_FUNCTION_TRACE(ev_walk_gpe_list);
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flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
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/* Walk the interrupt level descriptor list */
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gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
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while (gpe_xrupt_info) {
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/* Walk all Gpe Blocks attached to this interrupt level */
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gpe_block = gpe_xrupt_info->gpe_block_list_head;
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while (gpe_block) {
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/* One callback per GPE block */
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status =
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gpe_walk_callback(gpe_xrupt_info, gpe_block,
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context);
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if (ACPI_FAILURE(status)) {
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if (status == AE_CTRL_END) { /* Callback abort */
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status = AE_OK;
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}
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goto unlock_and_exit;
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}
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gpe_block = gpe_block->next;
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}
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gpe_xrupt_info = gpe_xrupt_info->next;
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}
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unlock_and_exit:
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acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ev_delete_gpe_handlers
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*
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* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
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* gpe_block - Gpe Block info
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*
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* RETURN: Status
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*
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* DESCRIPTION: Delete all Handler objects found in the GPE data structs.
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* Used only prior to termination.
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*
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******************************************************************************/
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acpi_status
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acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
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struct acpi_gpe_block_info *gpe_block,
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void *context)
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{
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struct acpi_gpe_event_info *gpe_event_info;
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u32 i;
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u32 j;
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ACPI_FUNCTION_TRACE(ev_delete_gpe_handlers);
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/* Examine each GPE Register within the block */
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for (i = 0; i < gpe_block->register_count; i++) {
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/* Now look at the individual GPEs in this byte register */
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for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
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gpe_event_info = &gpe_block->event_info[((acpi_size) i *
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ACPI_GPE_REGISTER_WIDTH)
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+ j];
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if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
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ACPI_GPE_DISPATCH_HANDLER) {
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ACPI_FREE(gpe_event_info->dispatch.handler);
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gpe_event_info->dispatch.handler = NULL;
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gpe_event_info->flags &=
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~ACPI_GPE_DISPATCH_MASK;
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}
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}
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}
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return_ACPI_STATUS(AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ev_match_gpe_method
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*
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* PARAMETERS: Callback from walk_namespace
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*
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* RETURN: Status
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*
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* DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a
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* control method under the _GPE portion of the namespace.
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* Extract the name and GPE type from the object, saving this
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* information for quick lookup during GPE dispatch. Allows a
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* per-owner_id evaluation if execute_by_owner_id is TRUE in the
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* walk_info parameter block.
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*
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* The name of each GPE control method is of the form:
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* "_Lxx" or "_Exx", where:
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* L - means that the GPE is level triggered
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* E - means that the GPE is edge triggered
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* xx - is the GPE number [in HEX]
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*
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* If walk_info->execute_by_owner_id is TRUE, we only execute examine GPE methods
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* with that owner.
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* If walk_info->enable_this_gpe is TRUE, the GPE that is referred to by a GPE
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* method is immediately enabled (Used for Load/load_table operators)
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*
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******************************************************************************/
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static acpi_status
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acpi_ev_match_gpe_method(acpi_handle obj_handle,
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u32 level, void *context, void **return_value)
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{
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struct acpi_namespace_node *method_node =
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ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
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struct acpi_gpe_walk_info *walk_info =
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ACPI_CAST_PTR(struct acpi_gpe_walk_info, context);
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struct acpi_gpe_event_info *gpe_event_info;
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struct acpi_namespace_node *gpe_device;
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acpi_status status;
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u32 gpe_number;
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char name[ACPI_NAME_SIZE + 1];
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u8 type;
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ACPI_FUNCTION_TRACE(ev_match_gpe_method);
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/* Check if requested owner_id matches this owner_id */
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if ((walk_info->execute_by_owner_id) &&
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(method_node->owner_id != walk_info->owner_id)) {
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return_ACPI_STATUS(AE_OK);
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}
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/*
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* Match and decode the _Lxx and _Exx GPE method names
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*
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* 1) Extract the method name and null terminate it
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*/
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ACPI_MOVE_32_TO_32(name, &method_node->name.integer);
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name[ACPI_NAME_SIZE] = 0;
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/* 2) Name must begin with an underscore */
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if (name[0] != '_') {
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return_ACPI_STATUS(AE_OK); /* Ignore this method */
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}
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/*
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* 3) Edge/Level determination is based on the 2nd character
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* of the method name
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*
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* NOTE: Default GPE type is RUNTIME only. Later, if a _PRW object is
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* found that points to this GPE, the ACPI_GPE_CAN_WAKE flag is set.
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*/
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switch (name[1]) {
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case 'L':
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type = ACPI_GPE_LEVEL_TRIGGERED;
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break;
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case 'E':
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type = ACPI_GPE_EDGE_TRIGGERED;
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break;
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default:
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/* Unknown method type, just ignore it */
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ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
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"Ignoring unknown GPE method type: %s "
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"(name not of form _Lxx or _Exx)", name));
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return_ACPI_STATUS(AE_OK);
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}
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/* 4) The last two characters of the name are the hex GPE Number */
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gpe_number = ACPI_STRTOUL(&name[2], NULL, 16);
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if (gpe_number == ACPI_UINT32_MAX) {
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/* Conversion failed; invalid method, just ignore it */
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ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
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"Could not extract GPE number from name: %s "
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"(name is not of form _Lxx or _Exx)", name));
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return_ACPI_STATUS(AE_OK);
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}
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/* Ensure that we have a valid GPE number for this GPE block */
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gpe_event_info =
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acpi_ev_low_get_gpe_info(gpe_number, walk_info->gpe_block);
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if (!gpe_event_info) {
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/*
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* This gpe_number is not valid for this GPE block, just ignore it.
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* However, it may be valid for a different GPE block, since GPE0
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* and GPE1 methods both appear under \_GPE.
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*/
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return_ACPI_STATUS(AE_OK);
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}
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if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
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ACPI_GPE_DISPATCH_HANDLER) {
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/* If there is already a handler, ignore this GPE method */
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return_ACPI_STATUS(AE_OK);
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}
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if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
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ACPI_GPE_DISPATCH_METHOD) {
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/*
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* If there is already a method, ignore this method. But check
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* for a type mismatch (if both the _Lxx AND _Exx exist)
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*/
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if (type != (gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK)) {
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ACPI_ERROR((AE_INFO,
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"For GPE 0x%.2X, found both _L%2.2X and _E%2.2X methods",
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gpe_number, gpe_number, gpe_number));
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}
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return_ACPI_STATUS(AE_OK);
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}
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/*
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* Add the GPE information from above to the gpe_event_info block for
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* use during dispatch of this GPE.
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*/
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gpe_event_info->flags |= (u8)(type | ACPI_GPE_DISPATCH_METHOD);
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gpe_event_info->dispatch.method_node = method_node;
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/*
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* Enable this GPE if requested. This only happens when during the
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* execution of a Load or load_table operator. We have found a new
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* GPE method and want to immediately enable the GPE if it is a
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* runtime GPE.
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*/
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if (walk_info->enable_this_gpe) {
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/* Ignore GPEs that can wake the system */
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if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE) ||
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!acpi_gbl_leave_wake_gpes_disabled) {
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walk_info->count++;
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gpe_device = walk_info->gpe_device;
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if (gpe_device == acpi_gbl_fadt_gpe_device) {
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gpe_device = NULL;
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}
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status = acpi_enable_gpe(gpe_device, gpe_number,
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ACPI_GPE_TYPE_RUNTIME);
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, status,
|
||||
"Could not enable GPE 0x%02X",
|
||||
gpe_number));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
|
||||
"Registered GPE method %s as GPE number 0x%.2X\n",
|
||||
name, gpe_number));
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_match_prw_and_gpe
|
||||
*
|
||||
* PARAMETERS: Callback from walk_namespace
|
||||
*
|
||||
* RETURN: Status. NOTE: We ignore errors so that the _PRW walk is
|
||||
* not aborted on a single _PRW failure.
|
||||
*
|
||||
* DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a
|
||||
* Device. Run the _PRW method. If present, extract the GPE
|
||||
* number and mark the GPE as a CAN_WAKE GPE. Allows a
|
||||
* per-owner_id execution if execute_by_owner_id is TRUE in the
|
||||
* walk_info parameter block.
|
||||
*
|
||||
* If walk_info->execute_by_owner_id is TRUE, we only execute _PRWs with that
|
||||
* owner.
|
||||
* If walk_info->gpe_device is NULL, we execute every _PRW found. Otherwise,
|
||||
* we only execute _PRWs that refer to the input gpe_device.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
static acpi_status
|
||||
acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
|
||||
u32 level, void *context, void **return_value)
|
||||
{
|
||||
struct acpi_gpe_walk_info *walk_info =
|
||||
ACPI_CAST_PTR(struct acpi_gpe_walk_info, context);
|
||||
struct acpi_namespace_node *gpe_device;
|
||||
struct acpi_gpe_block_info *gpe_block;
|
||||
struct acpi_namespace_node *target_gpe_device;
|
||||
struct acpi_namespace_node *prw_node;
|
||||
struct acpi_gpe_event_info *gpe_event_info;
|
||||
union acpi_operand_object *pkg_desc;
|
||||
union acpi_operand_object *obj_desc;
|
||||
u32 gpe_number;
|
||||
acpi_status status;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_match_prw_and_gpe);
|
||||
|
||||
/* Check for a _PRW method under this device */
|
||||
|
||||
status = acpi_ns_get_node(obj_handle, METHOD_NAME__PRW,
|
||||
ACPI_NS_NO_UPSEARCH, &prw_node);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* Check if requested owner_id matches this owner_id */
|
||||
|
||||
if ((walk_info->execute_by_owner_id) &&
|
||||
(prw_node->owner_id != walk_info->owner_id)) {
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* Execute the _PRW */
|
||||
|
||||
status = acpi_ut_evaluate_object(prw_node, NULL,
|
||||
ACPI_BTYPE_PACKAGE, &pkg_desc);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* The returned _PRW package must have at least two elements */
|
||||
|
||||
if (pkg_desc->package.count < 2) {
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Extract pointers from the input context */
|
||||
|
||||
gpe_device = walk_info->gpe_device;
|
||||
gpe_block = walk_info->gpe_block;
|
||||
|
||||
/*
|
||||
* The _PRW object must return a package, we are only interested
|
||||
* in the first element
|
||||
*/
|
||||
obj_desc = pkg_desc->package.elements[0];
|
||||
|
||||
if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
|
||||
|
||||
/* Use FADT-defined GPE device (from definition of _PRW) */
|
||||
|
||||
target_gpe_device = NULL;
|
||||
if (gpe_device) {
|
||||
target_gpe_device = acpi_gbl_fadt_gpe_device;
|
||||
}
|
||||
|
||||
/* Integer is the GPE number in the FADT described GPE blocks */
|
||||
|
||||
gpe_number = (u32) obj_desc->integer.value;
|
||||
} else if (obj_desc->common.type == ACPI_TYPE_PACKAGE) {
|
||||
|
||||
/* Package contains a GPE reference and GPE number within a GPE block */
|
||||
|
||||
if ((obj_desc->package.count < 2) ||
|
||||
((obj_desc->package.elements[0])->common.type !=
|
||||
ACPI_TYPE_LOCAL_REFERENCE) ||
|
||||
((obj_desc->package.elements[1])->common.type !=
|
||||
ACPI_TYPE_INTEGER)) {
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Get GPE block reference and decode */
|
||||
|
||||
target_gpe_device =
|
||||
obj_desc->package.elements[0]->reference.node;
|
||||
gpe_number = (u32) obj_desc->package.elements[1]->integer.value;
|
||||
} else {
|
||||
/* Unknown type, just ignore it */
|
||||
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Get the gpe_event_info for this GPE */
|
||||
|
||||
if (gpe_device) {
|
||||
/*
|
||||
* Is this GPE within this block?
|
||||
*
|
||||
* TRUE if and only if these conditions are true:
|
||||
* 1) The GPE devices match.
|
||||
* 2) The GPE index(number) is within the range of the Gpe Block
|
||||
* associated with the GPE device.
|
||||
*/
|
||||
if (gpe_device != target_gpe_device) {
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
gpe_event_info =
|
||||
acpi_ev_low_get_gpe_info(gpe_number, gpe_block);
|
||||
} else {
|
||||
/* gpe_device is NULL, just match the target_device and gpe_number */
|
||||
|
||||
gpe_event_info =
|
||||
acpi_ev_get_gpe_event_info(target_gpe_device, gpe_number);
|
||||
}
|
||||
|
||||
if (gpe_event_info) {
|
||||
if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
|
||||
|
||||
/* This GPE can wake the system */
|
||||
|
||||
gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
|
||||
walk_info->count++;
|
||||
}
|
||||
}
|
||||
|
||||
cleanup:
|
||||
acpi_ut_remove_reference(pkg_desc);
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_get_gpe_xrupt_block
|
||||
*
|
||||
* PARAMETERS: interrupt_number - Interrupt for a GPE block
|
||||
*
|
||||
* RETURN: A GPE interrupt block
|
||||
*
|
||||
* DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
|
||||
* block per unique interrupt level used for GPEs. Should be
|
||||
* called only when the GPE lists are semaphore locked and not
|
||||
* subject to change.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
static struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32
|
||||
interrupt_number)
|
||||
{
|
||||
struct acpi_gpe_xrupt_info *next_gpe_xrupt;
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt;
|
||||
acpi_status status;
|
||||
acpi_cpu_flags flags;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_get_gpe_xrupt_block);
|
||||
|
||||
/* No need for lock since we are not changing any list elements here */
|
||||
|
||||
next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
|
||||
while (next_gpe_xrupt) {
|
||||
if (next_gpe_xrupt->interrupt_number == interrupt_number) {
|
||||
return_PTR(next_gpe_xrupt);
|
||||
}
|
||||
|
||||
next_gpe_xrupt = next_gpe_xrupt->next;
|
||||
}
|
||||
|
||||
/* Not found, must allocate a new xrupt descriptor */
|
||||
|
||||
gpe_xrupt = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_xrupt_info));
|
||||
if (!gpe_xrupt) {
|
||||
return_PTR(NULL);
|
||||
}
|
||||
|
||||
gpe_xrupt->interrupt_number = interrupt_number;
|
||||
|
||||
/* Install new interrupt descriptor with spin lock */
|
||||
|
||||
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
|
||||
if (acpi_gbl_gpe_xrupt_list_head) {
|
||||
next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
|
||||
while (next_gpe_xrupt->next) {
|
||||
next_gpe_xrupt = next_gpe_xrupt->next;
|
||||
}
|
||||
|
||||
next_gpe_xrupt->next = gpe_xrupt;
|
||||
gpe_xrupt->previous = next_gpe_xrupt;
|
||||
} else {
|
||||
acpi_gbl_gpe_xrupt_list_head = gpe_xrupt;
|
||||
}
|
||||
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
|
||||
|
||||
/* Install new interrupt handler if not SCI_INT */
|
||||
|
||||
if (interrupt_number != acpi_gbl_FADT.sci_interrupt) {
|
||||
status = acpi_os_install_interrupt_handler(interrupt_number,
|
||||
acpi_ev_gpe_xrupt_handler,
|
||||
gpe_xrupt);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Could not install GPE interrupt handler at level 0x%X",
|
||||
interrupt_number));
|
||||
return_PTR(NULL);
|
||||
}
|
||||
}
|
||||
|
||||
return_PTR(gpe_xrupt);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_delete_gpe_xrupt
|
||||
*
|
||||
* PARAMETERS: gpe_xrupt - A GPE interrupt info block
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Remove and free a gpe_xrupt block. Remove an associated
|
||||
* interrupt handler if not the SCI interrupt.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
static acpi_status
|
||||
acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt)
|
||||
{
|
||||
acpi_status status;
|
||||
acpi_cpu_flags flags;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_delete_gpe_xrupt);
|
||||
|
||||
/* We never want to remove the SCI interrupt handler */
|
||||
|
||||
if (gpe_xrupt->interrupt_number == acpi_gbl_FADT.sci_interrupt) {
|
||||
gpe_xrupt->gpe_block_list_head = NULL;
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* Disable this interrupt */
|
||||
|
||||
status =
|
||||
acpi_os_remove_interrupt_handler(gpe_xrupt->interrupt_number,
|
||||
acpi_ev_gpe_xrupt_handler);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
/* Unlink the interrupt block with lock */
|
||||
|
||||
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
|
||||
if (gpe_xrupt->previous) {
|
||||
gpe_xrupt->previous->next = gpe_xrupt->next;
|
||||
} else {
|
||||
/* No previous, update list head */
|
||||
|
||||
acpi_gbl_gpe_xrupt_list_head = gpe_xrupt->next;
|
||||
}
|
||||
|
||||
if (gpe_xrupt->next) {
|
||||
gpe_xrupt->next->previous = gpe_xrupt->previous;
|
||||
}
|
||||
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
|
||||
|
||||
/* Free the block */
|
||||
|
||||
ACPI_FREE(gpe_xrupt);
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_install_gpe_block
|
||||
|
@ -1058,123 +417,6 @@ acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
|
|||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_update_gpes
|
||||
*
|
||||
* PARAMETERS: table_owner_id - ID of the newly-loaded ACPI table
|
||||
*
|
||||
* RETURN: None
|
||||
*
|
||||
* DESCRIPTION: Check for new GPE methods (_Lxx/_Exx) made available as a
|
||||
* result of a Load() or load_table() operation. If new GPE
|
||||
* methods have been installed, register the new methods and
|
||||
* enable and runtime GPEs that are associated with them. Also,
|
||||
* run any newly loaded _PRW methods in order to discover any
|
||||
* new CAN_WAKE GPEs.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
void acpi_ev_update_gpes(acpi_owner_id table_owner_id)
|
||||
{
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt_info;
|
||||
struct acpi_gpe_block_info *gpe_block;
|
||||
struct acpi_gpe_walk_info walk_info;
|
||||
acpi_status status = AE_OK;
|
||||
u32 new_wake_gpe_count = 0;
|
||||
|
||||
/* We will examine only _PRW/_Lxx/_Exx methods owned by this table */
|
||||
|
||||
walk_info.owner_id = table_owner_id;
|
||||
walk_info.execute_by_owner_id = TRUE;
|
||||
walk_info.count = 0;
|
||||
|
||||
if (acpi_gbl_leave_wake_gpes_disabled) {
|
||||
/*
|
||||
* 1) Run any newly-loaded _PRW methods to find any GPEs that
|
||||
* can now be marked as CAN_WAKE GPEs. Note: We must run the
|
||||
* _PRW methods before we process the _Lxx/_Exx methods because
|
||||
* we will enable all runtime GPEs associated with the new
|
||||
* _Lxx/_Exx methods at the time we process those methods.
|
||||
*
|
||||
* Unlock interpreter so that we can run the _PRW methods.
|
||||
*/
|
||||
walk_info.gpe_block = NULL;
|
||||
walk_info.gpe_device = NULL;
|
||||
|
||||
acpi_ex_exit_interpreter();
|
||||
|
||||
status =
|
||||
acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
|
||||
ACPI_UINT32_MAX,
|
||||
ACPI_NS_WALK_NO_UNLOCK,
|
||||
acpi_ev_match_prw_and_gpe, NULL,
|
||||
&walk_info, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"While executing _PRW methods"));
|
||||
}
|
||||
|
||||
acpi_ex_enter_interpreter();
|
||||
new_wake_gpe_count = walk_info.count;
|
||||
}
|
||||
|
||||
/*
|
||||
* 2) Find any _Lxx/_Exx GPE methods that have just been loaded.
|
||||
*
|
||||
* Any GPEs that correspond to new _Lxx/_Exx methods and are not
|
||||
* marked as CAN_WAKE are immediately enabled.
|
||||
*
|
||||
* Examine the namespace underneath each gpe_device within the
|
||||
* gpe_block lists.
|
||||
*/
|
||||
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return;
|
||||
}
|
||||
|
||||
walk_info.count = 0;
|
||||
walk_info.enable_this_gpe = TRUE;
|
||||
|
||||
/* Walk the interrupt level descriptor list */
|
||||
|
||||
gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
|
||||
while (gpe_xrupt_info) {
|
||||
|
||||
/* Walk all Gpe Blocks attached to this interrupt level */
|
||||
|
||||
gpe_block = gpe_xrupt_info->gpe_block_list_head;
|
||||
while (gpe_block) {
|
||||
walk_info.gpe_block = gpe_block;
|
||||
walk_info.gpe_device = gpe_block->node;
|
||||
|
||||
status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD,
|
||||
walk_info.gpe_device,
|
||||
ACPI_UINT32_MAX,
|
||||
ACPI_NS_WALK_NO_UNLOCK,
|
||||
acpi_ev_match_gpe_method,
|
||||
NULL, &walk_info, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"While decoding _Lxx/_Exx methods"));
|
||||
}
|
||||
|
||||
gpe_block = gpe_block->next;
|
||||
}
|
||||
|
||||
gpe_xrupt_info = gpe_xrupt_info->next;
|
||||
}
|
||||
|
||||
if (walk_info.count || new_wake_gpe_count) {
|
||||
ACPI_INFO((AE_INFO,
|
||||
"Enabled %u new runtime GPEs, added %u new wakeup GPEs",
|
||||
walk_info.count, new_wake_gpe_count));
|
||||
}
|
||||
|
||||
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
|
||||
return;
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_initialize_gpe_block
|
||||
|
@ -1296,154 +538,3 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
|
|||
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_gpe_initialize
|
||||
*
|
||||
* PARAMETERS: None
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Initialize the GPE data structures
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status acpi_ev_gpe_initialize(void)
|
||||
{
|
||||
u32 register_count0 = 0;
|
||||
u32 register_count1 = 0;
|
||||
u32 gpe_number_max = 0;
|
||||
acpi_status status;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_gpe_initialize);
|
||||
|
||||
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the GPE Block(s) defined in the FADT
|
||||
*
|
||||
* Why the GPE register block lengths are divided by 2: From the ACPI
|
||||
* Spec, section "General-Purpose Event Registers", we have:
|
||||
*
|
||||
* "Each register block contains two registers of equal length
|
||||
* GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
|
||||
* GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
|
||||
* The length of the GPE1_STS and GPE1_EN registers is equal to
|
||||
* half the GPE1_LEN. If a generic register block is not supported
|
||||
* then its respective block pointer and block length values in the
|
||||
* FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
|
||||
* to be the same size."
|
||||
*/
|
||||
|
||||
/*
|
||||
* Determine the maximum GPE number for this machine.
|
||||
*
|
||||
* Note: both GPE0 and GPE1 are optional, and either can exist without
|
||||
* the other.
|
||||
*
|
||||
* If EITHER the register length OR the block address are zero, then that
|
||||
* particular block is not supported.
|
||||
*/
|
||||
if (acpi_gbl_FADT.gpe0_block_length &&
|
||||
acpi_gbl_FADT.xgpe0_block.address) {
|
||||
|
||||
/* GPE block 0 exists (has both length and address > 0) */
|
||||
|
||||
register_count0 = (u16) (acpi_gbl_FADT.gpe0_block_length / 2);
|
||||
|
||||
gpe_number_max =
|
||||
(register_count0 * ACPI_GPE_REGISTER_WIDTH) - 1;
|
||||
|
||||
/* Install GPE Block 0 */
|
||||
|
||||
status = acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
|
||||
&acpi_gbl_FADT.xgpe0_block,
|
||||
register_count0, 0,
|
||||
acpi_gbl_FADT.sci_interrupt,
|
||||
&acpi_gbl_gpe_fadt_blocks[0]);
|
||||
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"Could not create GPE Block 0"));
|
||||
}
|
||||
}
|
||||
|
||||
if (acpi_gbl_FADT.gpe1_block_length &&
|
||||
acpi_gbl_FADT.xgpe1_block.address) {
|
||||
|
||||
/* GPE block 1 exists (has both length and address > 0) */
|
||||
|
||||
register_count1 = (u16) (acpi_gbl_FADT.gpe1_block_length / 2);
|
||||
|
||||
/* Check for GPE0/GPE1 overlap (if both banks exist) */
|
||||
|
||||
if ((register_count0) &&
|
||||
(gpe_number_max >= acpi_gbl_FADT.gpe1_base)) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"GPE0 block (GPE 0 to %u) overlaps the GPE1 block "
|
||||
"(GPE %u to %u) - Ignoring GPE1",
|
||||
gpe_number_max, acpi_gbl_FADT.gpe1_base,
|
||||
acpi_gbl_FADT.gpe1_base +
|
||||
((register_count1 *
|
||||
ACPI_GPE_REGISTER_WIDTH) - 1)));
|
||||
|
||||
/* Ignore GPE1 block by setting the register count to zero */
|
||||
|
||||
register_count1 = 0;
|
||||
} else {
|
||||
/* Install GPE Block 1 */
|
||||
|
||||
status =
|
||||
acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
|
||||
&acpi_gbl_FADT.xgpe1_block,
|
||||
register_count1,
|
||||
acpi_gbl_FADT.gpe1_base,
|
||||
acpi_gbl_FADT.
|
||||
sci_interrupt,
|
||||
&acpi_gbl_gpe_fadt_blocks
|
||||
[1]);
|
||||
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"Could not create GPE Block 1"));
|
||||
}
|
||||
|
||||
/*
|
||||
* GPE0 and GPE1 do not have to be contiguous in the GPE number
|
||||
* space. However, GPE0 always starts at GPE number zero.
|
||||
*/
|
||||
gpe_number_max = acpi_gbl_FADT.gpe1_base +
|
||||
((register_count1 * ACPI_GPE_REGISTER_WIDTH) - 1);
|
||||
}
|
||||
}
|
||||
|
||||
/* Exit if there are no GPE registers */
|
||||
|
||||
if ((register_count0 + register_count1) == 0) {
|
||||
|
||||
/* GPEs are not required by ACPI, this is OK */
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
|
||||
"There are no GPE blocks defined in the FADT\n"));
|
||||
status = AE_OK;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Check for Max GPE number out-of-range */
|
||||
|
||||
if (gpe_number_max > ACPI_GPE_MAX) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Maximum GPE number from FADT is too large: 0x%X",
|
||||
gpe_number_max));
|
||||
status = AE_BAD_VALUE;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
cleanup:
|
||||
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
|
653
drivers/acpi/acpica/evgpeinit.c
Normal file
653
drivers/acpi/acpica/evgpeinit.c
Normal file
|
@ -0,0 +1,653 @@
|
|||
/******************************************************************************
|
||||
*
|
||||
* Module Name: evgpeinit - System GPE initialization and update
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2010, Intel Corp.
|
||||
* 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 "accommon.h"
|
||||
#include "acevents.h"
|
||||
#include "acnamesp.h"
|
||||
#include "acinterp.h"
|
||||
|
||||
#define _COMPONENT ACPI_EVENTS
|
||||
ACPI_MODULE_NAME("evgpeinit")
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_gpe_initialize
|
||||
*
|
||||
* PARAMETERS: None
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Initialize the GPE data structures and the FADT GPE 0/1 blocks
|
||||
*
|
||||
******************************************************************************/
|
||||
acpi_status acpi_ev_gpe_initialize(void)
|
||||
{
|
||||
u32 register_count0 = 0;
|
||||
u32 register_count1 = 0;
|
||||
u32 gpe_number_max = 0;
|
||||
acpi_status status;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_gpe_initialize);
|
||||
|
||||
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the GPE Block(s) defined in the FADT
|
||||
*
|
||||
* Why the GPE register block lengths are divided by 2: From the ACPI
|
||||
* Spec, section "General-Purpose Event Registers", we have:
|
||||
*
|
||||
* "Each register block contains two registers of equal length
|
||||
* GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
|
||||
* GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
|
||||
* The length of the GPE1_STS and GPE1_EN registers is equal to
|
||||
* half the GPE1_LEN. If a generic register block is not supported
|
||||
* then its respective block pointer and block length values in the
|
||||
* FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
|
||||
* to be the same size."
|
||||
*/
|
||||
|
||||
/*
|
||||
* Determine the maximum GPE number for this machine.
|
||||
*
|
||||
* Note: both GPE0 and GPE1 are optional, and either can exist without
|
||||
* the other.
|
||||
*
|
||||
* If EITHER the register length OR the block address are zero, then that
|
||||
* particular block is not supported.
|
||||
*/
|
||||
if (acpi_gbl_FADT.gpe0_block_length &&
|
||||
acpi_gbl_FADT.xgpe0_block.address) {
|
||||
|
||||
/* GPE block 0 exists (has both length and address > 0) */
|
||||
|
||||
register_count0 = (u16)(acpi_gbl_FADT.gpe0_block_length / 2);
|
||||
|
||||
gpe_number_max =
|
||||
(register_count0 * ACPI_GPE_REGISTER_WIDTH) - 1;
|
||||
|
||||
/* Install GPE Block 0 */
|
||||
|
||||
status = acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
|
||||
&acpi_gbl_FADT.xgpe0_block,
|
||||
register_count0, 0,
|
||||
acpi_gbl_FADT.sci_interrupt,
|
||||
&acpi_gbl_gpe_fadt_blocks[0]);
|
||||
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"Could not create GPE Block 0"));
|
||||
}
|
||||
}
|
||||
|
||||
if (acpi_gbl_FADT.gpe1_block_length &&
|
||||
acpi_gbl_FADT.xgpe1_block.address) {
|
||||
|
||||
/* GPE block 1 exists (has both length and address > 0) */
|
||||
|
||||
register_count1 = (u16)(acpi_gbl_FADT.gpe1_block_length / 2);
|
||||
|
||||
/* Check for GPE0/GPE1 overlap (if both banks exist) */
|
||||
|
||||
if ((register_count0) &&
|
||||
(gpe_number_max >= acpi_gbl_FADT.gpe1_base)) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"GPE0 block (GPE 0 to %u) overlaps the GPE1 block "
|
||||
"(GPE %u to %u) - Ignoring GPE1",
|
||||
gpe_number_max, acpi_gbl_FADT.gpe1_base,
|
||||
acpi_gbl_FADT.gpe1_base +
|
||||
((register_count1 *
|
||||
ACPI_GPE_REGISTER_WIDTH) - 1)));
|
||||
|
||||
/* Ignore GPE1 block by setting the register count to zero */
|
||||
|
||||
register_count1 = 0;
|
||||
} else {
|
||||
/* Install GPE Block 1 */
|
||||
|
||||
status =
|
||||
acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
|
||||
&acpi_gbl_FADT.xgpe1_block,
|
||||
register_count1,
|
||||
acpi_gbl_FADT.gpe1_base,
|
||||
acpi_gbl_FADT.
|
||||
sci_interrupt,
|
||||
&acpi_gbl_gpe_fadt_blocks
|
||||
[1]);
|
||||
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"Could not create GPE Block 1"));
|
||||
}
|
||||
|
||||
/*
|
||||
* GPE0 and GPE1 do not have to be contiguous in the GPE number
|
||||
* space. However, GPE0 always starts at GPE number zero.
|
||||
*/
|
||||
gpe_number_max = acpi_gbl_FADT.gpe1_base +
|
||||
((register_count1 * ACPI_GPE_REGISTER_WIDTH) - 1);
|
||||
}
|
||||
}
|
||||
|
||||
/* Exit if there are no GPE registers */
|
||||
|
||||
if ((register_count0 + register_count1) == 0) {
|
||||
|
||||
/* GPEs are not required by ACPI, this is OK */
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
|
||||
"There are no GPE blocks defined in the FADT\n"));
|
||||
status = AE_OK;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Check for Max GPE number out-of-range */
|
||||
|
||||
if (gpe_number_max > ACPI_GPE_MAX) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Maximum GPE number from FADT is too large: 0x%X",
|
||||
gpe_number_max));
|
||||
status = AE_BAD_VALUE;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
cleanup:
|
||||
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_update_gpes
|
||||
*
|
||||
* PARAMETERS: table_owner_id - ID of the newly-loaded ACPI table
|
||||
*
|
||||
* RETURN: None
|
||||
*
|
||||
* DESCRIPTION: Check for new GPE methods (_Lxx/_Exx) made available as a
|
||||
* result of a Load() or load_table() operation. If new GPE
|
||||
* methods have been installed, register the new methods and
|
||||
* enable and runtime GPEs that are associated with them. Also,
|
||||
* run any newly loaded _PRW methods in order to discover any
|
||||
* new CAN_WAKE GPEs.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
void acpi_ev_update_gpes(acpi_owner_id table_owner_id)
|
||||
{
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt_info;
|
||||
struct acpi_gpe_block_info *gpe_block;
|
||||
struct acpi_gpe_walk_info walk_info;
|
||||
acpi_status status = AE_OK;
|
||||
u32 new_wake_gpe_count = 0;
|
||||
|
||||
/* We will examine only _PRW/_Lxx/_Exx methods owned by this table */
|
||||
|
||||
walk_info.owner_id = table_owner_id;
|
||||
walk_info.execute_by_owner_id = TRUE;
|
||||
walk_info.count = 0;
|
||||
|
||||
if (acpi_gbl_leave_wake_gpes_disabled) {
|
||||
/*
|
||||
* 1) Run any newly-loaded _PRW methods to find any GPEs that
|
||||
* can now be marked as CAN_WAKE GPEs. Note: We must run the
|
||||
* _PRW methods before we process the _Lxx/_Exx methods because
|
||||
* we will enable all runtime GPEs associated with the new
|
||||
* _Lxx/_Exx methods at the time we process those methods.
|
||||
*
|
||||
* Unlock interpreter so that we can run the _PRW methods.
|
||||
*/
|
||||
walk_info.gpe_block = NULL;
|
||||
walk_info.gpe_device = NULL;
|
||||
|
||||
acpi_ex_exit_interpreter();
|
||||
|
||||
status =
|
||||
acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
|
||||
ACPI_UINT32_MAX,
|
||||
ACPI_NS_WALK_NO_UNLOCK,
|
||||
acpi_ev_match_prw_and_gpe, NULL,
|
||||
&walk_info, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"While executing _PRW methods"));
|
||||
}
|
||||
|
||||
acpi_ex_enter_interpreter();
|
||||
new_wake_gpe_count = walk_info.count;
|
||||
}
|
||||
|
||||
/*
|
||||
* 2) Find any _Lxx/_Exx GPE methods that have just been loaded.
|
||||
*
|
||||
* Any GPEs that correspond to new _Lxx/_Exx methods and are not
|
||||
* marked as CAN_WAKE are immediately enabled.
|
||||
*
|
||||
* Examine the namespace underneath each gpe_device within the
|
||||
* gpe_block lists.
|
||||
*/
|
||||
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return;
|
||||
}
|
||||
|
||||
walk_info.count = 0;
|
||||
walk_info.enable_this_gpe = TRUE;
|
||||
|
||||
/* Walk the interrupt level descriptor list */
|
||||
|
||||
gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
|
||||
while (gpe_xrupt_info) {
|
||||
|
||||
/* Walk all Gpe Blocks attached to this interrupt level */
|
||||
|
||||
gpe_block = gpe_xrupt_info->gpe_block_list_head;
|
||||
while (gpe_block) {
|
||||
walk_info.gpe_block = gpe_block;
|
||||
walk_info.gpe_device = gpe_block->node;
|
||||
|
||||
status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD,
|
||||
walk_info.gpe_device,
|
||||
ACPI_UINT32_MAX,
|
||||
ACPI_NS_WALK_NO_UNLOCK,
|
||||
acpi_ev_match_gpe_method,
|
||||
NULL, &walk_info, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"While decoding _Lxx/_Exx methods"));
|
||||
}
|
||||
|
||||
gpe_block = gpe_block->next;
|
||||
}
|
||||
|
||||
gpe_xrupt_info = gpe_xrupt_info->next;
|
||||
}
|
||||
|
||||
if (walk_info.count || new_wake_gpe_count) {
|
||||
ACPI_INFO((AE_INFO,
|
||||
"Enabled %u new runtime GPEs, added %u new wakeup GPEs",
|
||||
walk_info.count, new_wake_gpe_count));
|
||||
}
|
||||
|
||||
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
|
||||
return;
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_match_gpe_method
|
||||
*
|
||||
* PARAMETERS: Callback from walk_namespace
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a
|
||||
* control method under the _GPE portion of the namespace.
|
||||
* Extract the name and GPE type from the object, saving this
|
||||
* information for quick lookup during GPE dispatch. Allows a
|
||||
* per-owner_id evaluation if execute_by_owner_id is TRUE in the
|
||||
* walk_info parameter block.
|
||||
*
|
||||
* The name of each GPE control method is of the form:
|
||||
* "_Lxx" or "_Exx", where:
|
||||
* L - means that the GPE is level triggered
|
||||
* E - means that the GPE is edge triggered
|
||||
* xx - is the GPE number [in HEX]
|
||||
*
|
||||
* If walk_info->execute_by_owner_id is TRUE, we only execute examine GPE methods
|
||||
* with that owner.
|
||||
* If walk_info->enable_this_gpe is TRUE, the GPE that is referred to by a GPE
|
||||
* method is immediately enabled (Used for Load/load_table operators)
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_ev_match_gpe_method(acpi_handle obj_handle,
|
||||
u32 level, void *context, void **return_value)
|
||||
{
|
||||
struct acpi_namespace_node *method_node =
|
||||
ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
|
||||
struct acpi_gpe_walk_info *walk_info =
|
||||
ACPI_CAST_PTR(struct acpi_gpe_walk_info, context);
|
||||
struct acpi_gpe_event_info *gpe_event_info;
|
||||
struct acpi_namespace_node *gpe_device;
|
||||
acpi_status status;
|
||||
u32 gpe_number;
|
||||
char name[ACPI_NAME_SIZE + 1];
|
||||
u8 type;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_match_gpe_method);
|
||||
|
||||
/* Check if requested owner_id matches this owner_id */
|
||||
|
||||
if ((walk_info->execute_by_owner_id) &&
|
||||
(method_node->owner_id != walk_info->owner_id)) {
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*
|
||||
* Match and decode the _Lxx and _Exx GPE method names
|
||||
*
|
||||
* 1) Extract the method name and null terminate it
|
||||
*/
|
||||
ACPI_MOVE_32_TO_32(name, &method_node->name.integer);
|
||||
name[ACPI_NAME_SIZE] = 0;
|
||||
|
||||
/* 2) Name must begin with an underscore */
|
||||
|
||||
if (name[0] != '_') {
|
||||
return_ACPI_STATUS(AE_OK); /* Ignore this method */
|
||||
}
|
||||
|
||||
/*
|
||||
* 3) Edge/Level determination is based on the 2nd character
|
||||
* of the method name
|
||||
*
|
||||
* NOTE: Default GPE type is RUNTIME only. Later, if a _PRW object is
|
||||
* found that points to this GPE, the ACPI_GPE_CAN_WAKE flag is set.
|
||||
*/
|
||||
switch (name[1]) {
|
||||
case 'L':
|
||||
type = ACPI_GPE_LEVEL_TRIGGERED;
|
||||
break;
|
||||
|
||||
case 'E':
|
||||
type = ACPI_GPE_EDGE_TRIGGERED;
|
||||
break;
|
||||
|
||||
default:
|
||||
/* Unknown method type, just ignore it */
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
|
||||
"Ignoring unknown GPE method type: %s "
|
||||
"(name not of form _Lxx or _Exx)", name));
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* 4) The last two characters of the name are the hex GPE Number */
|
||||
|
||||
gpe_number = ACPI_STRTOUL(&name[2], NULL, 16);
|
||||
if (gpe_number == ACPI_UINT32_MAX) {
|
||||
|
||||
/* Conversion failed; invalid method, just ignore it */
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
|
||||
"Could not extract GPE number from name: %s "
|
||||
"(name is not of form _Lxx or _Exx)", name));
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* Ensure that we have a valid GPE number for this GPE block */
|
||||
|
||||
gpe_event_info =
|
||||
acpi_ev_low_get_gpe_info(gpe_number, walk_info->gpe_block);
|
||||
if (!gpe_event_info) {
|
||||
/*
|
||||
* This gpe_number is not valid for this GPE block, just ignore it.
|
||||
* However, it may be valid for a different GPE block, since GPE0
|
||||
* and GPE1 methods both appear under \_GPE.
|
||||
*/
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
|
||||
ACPI_GPE_DISPATCH_HANDLER) {
|
||||
|
||||
/* If there is already a handler, ignore this GPE method */
|
||||
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
|
||||
ACPI_GPE_DISPATCH_METHOD) {
|
||||
/*
|
||||
* If there is already a method, ignore this method. But check
|
||||
* for a type mismatch (if both the _Lxx AND _Exx exist)
|
||||
*/
|
||||
if (type != (gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK)) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"For GPE 0x%.2X, found both _L%2.2X and _E%2.2X methods",
|
||||
gpe_number, gpe_number, gpe_number));
|
||||
}
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*
|
||||
* Add the GPE information from above to the gpe_event_info block for
|
||||
* use during dispatch of this GPE.
|
||||
*/
|
||||
gpe_event_info->flags |= (u8)(type | ACPI_GPE_DISPATCH_METHOD);
|
||||
gpe_event_info->dispatch.method_node = method_node;
|
||||
|
||||
/*
|
||||
* Enable this GPE if requested. This only happens when during the
|
||||
* execution of a Load or load_table operator. We have found a new
|
||||
* GPE method and want to immediately enable the GPE if it is a
|
||||
* runtime GPE.
|
||||
*/
|
||||
if (walk_info->enable_this_gpe) {
|
||||
|
||||
/* Ignore GPEs that can wake the system */
|
||||
|
||||
if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE) ||
|
||||
!acpi_gbl_leave_wake_gpes_disabled) {
|
||||
walk_info->count++;
|
||||
gpe_device = walk_info->gpe_device;
|
||||
|
||||
if (gpe_device == acpi_gbl_fadt_gpe_device) {
|
||||
gpe_device = NULL;
|
||||
}
|
||||
|
||||
status = acpi_enable_gpe(gpe_device, gpe_number,
|
||||
ACPI_GPE_TYPE_RUNTIME);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"Could not enable GPE 0x%02X",
|
||||
gpe_number));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
|
||||
"Registered GPE method %s as GPE number 0x%.2X\n",
|
||||
name, gpe_number));
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_match_prw_and_gpe
|
||||
*
|
||||
* PARAMETERS: Callback from walk_namespace
|
||||
*
|
||||
* RETURN: Status. NOTE: We ignore errors so that the _PRW walk is
|
||||
* not aborted on a single _PRW failure.
|
||||
*
|
||||
* DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a
|
||||
* Device. Run the _PRW method. If present, extract the GPE
|
||||
* number and mark the GPE as a CAN_WAKE GPE. Allows a
|
||||
* per-owner_id execution if execute_by_owner_id is TRUE in the
|
||||
* walk_info parameter block.
|
||||
*
|
||||
* If walk_info->execute_by_owner_id is TRUE, we only execute _PRWs with that
|
||||
* owner.
|
||||
* If walk_info->gpe_device is NULL, we execute every _PRW found. Otherwise,
|
||||
* we only execute _PRWs that refer to the input gpe_device.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
|
||||
u32 level, void *context, void **return_value)
|
||||
{
|
||||
struct acpi_gpe_walk_info *walk_info =
|
||||
ACPI_CAST_PTR(struct acpi_gpe_walk_info, context);
|
||||
struct acpi_namespace_node *gpe_device;
|
||||
struct acpi_gpe_block_info *gpe_block;
|
||||
struct acpi_namespace_node *target_gpe_device;
|
||||
struct acpi_namespace_node *prw_node;
|
||||
struct acpi_gpe_event_info *gpe_event_info;
|
||||
union acpi_operand_object *pkg_desc;
|
||||
union acpi_operand_object *obj_desc;
|
||||
u32 gpe_number;
|
||||
acpi_status status;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_match_prw_and_gpe);
|
||||
|
||||
/* Check for a _PRW method under this device */
|
||||
|
||||
status = acpi_ns_get_node(obj_handle, METHOD_NAME__PRW,
|
||||
ACPI_NS_NO_UPSEARCH, &prw_node);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* Check if requested owner_id matches this owner_id */
|
||||
|
||||
if ((walk_info->execute_by_owner_id) &&
|
||||
(prw_node->owner_id != walk_info->owner_id)) {
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* Execute the _PRW */
|
||||
|
||||
status = acpi_ut_evaluate_object(prw_node, NULL,
|
||||
ACPI_BTYPE_PACKAGE, &pkg_desc);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* The returned _PRW package must have at least two elements */
|
||||
|
||||
if (pkg_desc->package.count < 2) {
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Extract pointers from the input context */
|
||||
|
||||
gpe_device = walk_info->gpe_device;
|
||||
gpe_block = walk_info->gpe_block;
|
||||
|
||||
/*
|
||||
* The _PRW object must return a package, we are only interested
|
||||
* in the first element
|
||||
*/
|
||||
obj_desc = pkg_desc->package.elements[0];
|
||||
|
||||
if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
|
||||
|
||||
/* Use FADT-defined GPE device (from definition of _PRW) */
|
||||
|
||||
target_gpe_device = NULL;
|
||||
if (gpe_device) {
|
||||
target_gpe_device = acpi_gbl_fadt_gpe_device;
|
||||
}
|
||||
|
||||
/* Integer is the GPE number in the FADT described GPE blocks */
|
||||
|
||||
gpe_number = (u32)obj_desc->integer.value;
|
||||
} else if (obj_desc->common.type == ACPI_TYPE_PACKAGE) {
|
||||
|
||||
/* Package contains a GPE reference and GPE number within a GPE block */
|
||||
|
||||
if ((obj_desc->package.count < 2) ||
|
||||
((obj_desc->package.elements[0])->common.type !=
|
||||
ACPI_TYPE_LOCAL_REFERENCE) ||
|
||||
((obj_desc->package.elements[1])->common.type !=
|
||||
ACPI_TYPE_INTEGER)) {
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Get GPE block reference and decode */
|
||||
|
||||
target_gpe_device =
|
||||
obj_desc->package.elements[0]->reference.node;
|
||||
gpe_number = (u32)obj_desc->package.elements[1]->integer.value;
|
||||
} else {
|
||||
/* Unknown type, just ignore it */
|
||||
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Get the gpe_event_info for this GPE */
|
||||
|
||||
if (gpe_device) {
|
||||
/*
|
||||
* Is this GPE within this block?
|
||||
*
|
||||
* TRUE if and only if these conditions are true:
|
||||
* 1) The GPE devices match.
|
||||
* 2) The GPE index(number) is within the range of the Gpe Block
|
||||
* associated with the GPE device.
|
||||
*/
|
||||
if (gpe_device != target_gpe_device) {
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
gpe_event_info =
|
||||
acpi_ev_low_get_gpe_info(gpe_number, gpe_block);
|
||||
} else {
|
||||
/* gpe_device is NULL, just match the target_device and gpe_number */
|
||||
|
||||
gpe_event_info =
|
||||
acpi_ev_get_gpe_event_info(target_gpe_device, gpe_number);
|
||||
}
|
||||
|
||||
if (gpe_event_info) {
|
||||
if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
|
||||
|
||||
/* This GPE can wake the system */
|
||||
|
||||
gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
|
||||
walk_info->count++;
|
||||
}
|
||||
}
|
||||
|
||||
cleanup:
|
||||
acpi_ut_remove_reference(pkg_desc);
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
337
drivers/acpi/acpica/evgpeutil.c
Normal file
337
drivers/acpi/acpica/evgpeutil.c
Normal file
|
@ -0,0 +1,337 @@
|
|||
/******************************************************************************
|
||||
*
|
||||
* Module Name: evgpeutil - GPE utilities
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2010, Intel Corp.
|
||||
* 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 "accommon.h"
|
||||
#include "acevents.h"
|
||||
|
||||
#define _COMPONENT ACPI_EVENTS
|
||||
ACPI_MODULE_NAME("evgpeutil")
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_walk_gpe_list
|
||||
*
|
||||
* PARAMETERS: gpe_walk_callback - Routine called for each GPE block
|
||||
* Context - Value passed to callback
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Walk the GPE lists.
|
||||
*
|
||||
******************************************************************************/
|
||||
acpi_status
|
||||
acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context)
|
||||
{
|
||||
struct acpi_gpe_block_info *gpe_block;
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt_info;
|
||||
acpi_status status = AE_OK;
|
||||
acpi_cpu_flags flags;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_walk_gpe_list);
|
||||
|
||||
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
|
||||
|
||||
/* Walk the interrupt level descriptor list */
|
||||
|
||||
gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
|
||||
while (gpe_xrupt_info) {
|
||||
|
||||
/* Walk all Gpe Blocks attached to this interrupt level */
|
||||
|
||||
gpe_block = gpe_xrupt_info->gpe_block_list_head;
|
||||
while (gpe_block) {
|
||||
|
||||
/* One callback per GPE block */
|
||||
|
||||
status =
|
||||
gpe_walk_callback(gpe_xrupt_info, gpe_block,
|
||||
context);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
if (status == AE_CTRL_END) { /* Callback abort */
|
||||
status = AE_OK;
|
||||
}
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
gpe_block = gpe_block->next;
|
||||
}
|
||||
|
||||
gpe_xrupt_info = gpe_xrupt_info->next;
|
||||
}
|
||||
|
||||
unlock_and_exit:
|
||||
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_valid_gpe_event
|
||||
*
|
||||
* PARAMETERS: gpe_event_info - Info for this GPE
|
||||
*
|
||||
* RETURN: TRUE if the gpe_event is valid
|
||||
*
|
||||
* DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL.
|
||||
* Should be called only when the GPE lists are semaphore locked
|
||||
* and not subject to change.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
|
||||
{
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt_block;
|
||||
struct acpi_gpe_block_info *gpe_block;
|
||||
|
||||
ACPI_FUNCTION_ENTRY();
|
||||
|
||||
/* No need for spin lock since we are not changing any list elements */
|
||||
|
||||
/* Walk the GPE interrupt levels */
|
||||
|
||||
gpe_xrupt_block = acpi_gbl_gpe_xrupt_list_head;
|
||||
while (gpe_xrupt_block) {
|
||||
gpe_block = gpe_xrupt_block->gpe_block_list_head;
|
||||
|
||||
/* Walk the GPE blocks on this interrupt level */
|
||||
|
||||
while (gpe_block) {
|
||||
if ((&gpe_block->event_info[0] <= gpe_event_info) &&
|
||||
(&gpe_block->event_info[gpe_block->gpe_count] >
|
||||
gpe_event_info)) {
|
||||
return (TRUE);
|
||||
}
|
||||
|
||||
gpe_block = gpe_block->next;
|
||||
}
|
||||
|
||||
gpe_xrupt_block = gpe_xrupt_block->next;
|
||||
}
|
||||
|
||||
return (FALSE);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_get_gpe_xrupt_block
|
||||
*
|
||||
* PARAMETERS: interrupt_number - Interrupt for a GPE block
|
||||
*
|
||||
* RETURN: A GPE interrupt block
|
||||
*
|
||||
* DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
|
||||
* block per unique interrupt level used for GPEs. Should be
|
||||
* called only when the GPE lists are semaphore locked and not
|
||||
* subject to change.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number)
|
||||
{
|
||||
struct acpi_gpe_xrupt_info *next_gpe_xrupt;
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt;
|
||||
acpi_status status;
|
||||
acpi_cpu_flags flags;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_get_gpe_xrupt_block);
|
||||
|
||||
/* No need for lock since we are not changing any list elements here */
|
||||
|
||||
next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
|
||||
while (next_gpe_xrupt) {
|
||||
if (next_gpe_xrupt->interrupt_number == interrupt_number) {
|
||||
return_PTR(next_gpe_xrupt);
|
||||
}
|
||||
|
||||
next_gpe_xrupt = next_gpe_xrupt->next;
|
||||
}
|
||||
|
||||
/* Not found, must allocate a new xrupt descriptor */
|
||||
|
||||
gpe_xrupt = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_xrupt_info));
|
||||
if (!gpe_xrupt) {
|
||||
return_PTR(NULL);
|
||||
}
|
||||
|
||||
gpe_xrupt->interrupt_number = interrupt_number;
|
||||
|
||||
/* Install new interrupt descriptor with spin lock */
|
||||
|
||||
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
|
||||
if (acpi_gbl_gpe_xrupt_list_head) {
|
||||
next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
|
||||
while (next_gpe_xrupt->next) {
|
||||
next_gpe_xrupt = next_gpe_xrupt->next;
|
||||
}
|
||||
|
||||
next_gpe_xrupt->next = gpe_xrupt;
|
||||
gpe_xrupt->previous = next_gpe_xrupt;
|
||||
} else {
|
||||
acpi_gbl_gpe_xrupt_list_head = gpe_xrupt;
|
||||
}
|
||||
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
|
||||
|
||||
/* Install new interrupt handler if not SCI_INT */
|
||||
|
||||
if (interrupt_number != acpi_gbl_FADT.sci_interrupt) {
|
||||
status = acpi_os_install_interrupt_handler(interrupt_number,
|
||||
acpi_ev_gpe_xrupt_handler,
|
||||
gpe_xrupt);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Could not install GPE interrupt handler at level 0x%X",
|
||||
interrupt_number));
|
||||
return_PTR(NULL);
|
||||
}
|
||||
}
|
||||
|
||||
return_PTR(gpe_xrupt);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_delete_gpe_xrupt
|
||||
*
|
||||
* PARAMETERS: gpe_xrupt - A GPE interrupt info block
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Remove and free a gpe_xrupt block. Remove an associated
|
||||
* interrupt handler if not the SCI interrupt.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt)
|
||||
{
|
||||
acpi_status status;
|
||||
acpi_cpu_flags flags;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_delete_gpe_xrupt);
|
||||
|
||||
/* We never want to remove the SCI interrupt handler */
|
||||
|
||||
if (gpe_xrupt->interrupt_number == acpi_gbl_FADT.sci_interrupt) {
|
||||
gpe_xrupt->gpe_block_list_head = NULL;
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* Disable this interrupt */
|
||||
|
||||
status =
|
||||
acpi_os_remove_interrupt_handler(gpe_xrupt->interrupt_number,
|
||||
acpi_ev_gpe_xrupt_handler);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
/* Unlink the interrupt block with lock */
|
||||
|
||||
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
|
||||
if (gpe_xrupt->previous) {
|
||||
gpe_xrupt->previous->next = gpe_xrupt->next;
|
||||
} else {
|
||||
/* No previous, update list head */
|
||||
|
||||
acpi_gbl_gpe_xrupt_list_head = gpe_xrupt->next;
|
||||
}
|
||||
|
||||
if (gpe_xrupt->next) {
|
||||
gpe_xrupt->next->previous = gpe_xrupt->previous;
|
||||
}
|
||||
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
|
||||
|
||||
/* Free the block */
|
||||
|
||||
ACPI_FREE(gpe_xrupt);
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ev_delete_gpe_handlers
|
||||
*
|
||||
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
||||
* gpe_block - Gpe Block info
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Delete all Handler objects found in the GPE data structs.
|
||||
* Used only prior to termination.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
||||
struct acpi_gpe_block_info *gpe_block,
|
||||
void *context)
|
||||
{
|
||||
struct acpi_gpe_event_info *gpe_event_info;
|
||||
u32 i;
|
||||
u32 j;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ev_delete_gpe_handlers);
|
||||
|
||||
/* Examine each GPE Register within the block */
|
||||
|
||||
for (i = 0; i < gpe_block->register_count; i++) {
|
||||
|
||||
/* Now look at the individual GPEs in this byte register */
|
||||
|
||||
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
|
||||
gpe_event_info = &gpe_block->event_info[((acpi_size) i *
|
||||
ACPI_GPE_REGISTER_WIDTH)
|
||||
+ j];
|
||||
|
||||
if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
|
||||
ACPI_GPE_DISPATCH_HANDLER) {
|
||||
ACPI_FREE(gpe_event_info->dispatch.handler);
|
||||
gpe_event_info->dispatch.handler = NULL;
|
||||
gpe_event_info->flags &=
|
||||
~ACPI_GPE_DISPATCH_MASK;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
Loading…
Reference in a new issue