From: Bob Moore <robert.moore@xxxxxxxxx>
This function maps an input GPE index to a GPE block device. Also
Added acpi_current_gpe_count to track the current number of GPEs
that are being managed by the ACPICA core (both FADT-based GPEs
and the GPEs contained in GPE block devices.)
Modify drivers/acpi/system.c to use these 2 new interfaces
Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/acpi/events/evgpeblk.c | 25 ++++++++--
drivers/acpi/events/evmisc.c | 4 +-
drivers/acpi/events/evxfevnt.c | 93 +++++++++++++++++++++++++++++++++++++
drivers/acpi/hardware/hwgpe.c | 26 ++++++-----
drivers/acpi/hardware/hwregs.c | 2 +-
drivers/acpi/system.c | 63 +------------------------
drivers/acpi/utilities/utglobal.c | 6 ++-
include/acpi/acevents.h | 6 ++-
include/acpi/acglobal.h | 1 +
include/acpi/achware.h | 7 ++-
include/acpi/aclocal.h | 13 ++++--
include/acpi/acpixf.h | 2 +
12 files changed, 156 insertions(+), 92 deletions(-)
diff --git a/drivers/acpi/events/evgpeblk.c b/drivers/acpi/events/evgpeblk.c
index 7537cda..2872be2 100644
--- a/drivers/acpi/events/evgpeblk.c
+++ b/drivers/acpi/events/evgpeblk.c
@@ -124,6 +124,7 @@ u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
* FUNCTION: acpi_ev_walk_gpe_list
*
* PARAMETERS: gpe_walk_callback - Routine called for each GPE block
+ * Context - Value passed to callback
*
* RETURN: Status
*
@@ -131,7 +132,8 @@ u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
*
******************************************************************************/
-acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback)
+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;
@@ -154,8 +156,13 @@ acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback)
/* One callback per GPE block */
- status = gpe_walk_callback(gpe_xrupt_info, 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;
}
@@ -186,7 +193,8 @@ acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback)
acpi_status
acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block)
+ struct acpi_gpe_block_info *gpe_block,
+ void *context)
{
struct acpi_gpe_event_info *gpe_event_info;
u32 i;
@@ -690,7 +698,8 @@ acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block)
/* Disable all GPEs in this block */
- status = acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block);
+ status =
+ acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block, NULL);
if (!gpe_block->previous && !gpe_block->next) {
@@ -717,6 +726,9 @@ acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block)
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
}
+ acpi_current_gpe_count -=
+ gpe_block->register_count * ACPI_GPE_REGISTER_WIDTH;
+
/* Free the gpe_block */
ACPI_FREE(gpe_block->register_info);
@@ -958,6 +970,9 @@ acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
gpe_device->name.ascii, gpe_block->register_count,
interrupt_number));
+ /* Update global count of currently available GPEs */
+
+ acpi_current_gpe_count += register_count * ACPI_GPE_REGISTER_WIDTH;
return_ACPI_STATUS(AE_OK);
}
@@ -1057,7 +1072,7 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
/* Enable all valid runtime GPEs found above */
- status = acpi_hw_enable_runtime_gpe_block(NULL, gpe_block);
+ status = acpi_hw_enable_runtime_gpe_block(NULL, gpe_block, NULL);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO, "Could not enable GPEs in GpeBlock %p",
gpe_block));
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index dbac5b3..d807158 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -588,7 +588,7 @@ void acpi_ev_terminate(void)
/* Disable all GPEs in all GPE blocks */
- status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block);
+ status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
/* Remove SCI handler */
@@ -606,7 +606,7 @@ void acpi_ev_terminate(void)
/* Deallocate all handler objects installed within GPE info structs */
- status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers);
+ status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers, NULL);
/* Return to original mode if necessary */
diff --git a/drivers/acpi/events/evxfevnt.c b/drivers/acpi/events/evxfevnt.c
index 669b8ca..aa4dec8 100644
--- a/drivers/acpi/events/evxfevnt.c
+++ b/drivers/acpi/events/evxfevnt.c
@@ -49,6 +49,11 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evxfevnt")
+/* Local prototypes */
+acpi_status
+acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block, void *context);
+
/*******************************************************************************
*
* FUNCTION: acpi_enable
@@ -60,6 +65,7 @@ ACPI_MODULE_NAME("evxfevnt")
* DESCRIPTION: Transfers the system into ACPI mode.
*
******************************************************************************/
+
acpi_status acpi_enable(void)
{
acpi_status status = AE_OK;
@@ -717,3 +723,90 @@ acpi_status acpi_remove_gpe_block(acpi_handle gpe_device)
}
ACPI_EXPORT_SYMBOL(acpi_remove_gpe_block)
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_get_gpe_device
+ *
+ * PARAMETERS: Index - System GPE index (0-current_gpe_count)
+ * gpe_device - Where the parent GPE Device is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Obtain the GPE device associated with the input index. A NULL
+ * gpe device indicates that the gpe number is contained in one of
+ * the FADT-defined gpe blocks. Otherwise, the GPE block device.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_get_gpe_device(u32 index, acpi_handle *gpe_device)
+{
+ struct acpi_gpe_device_info info;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(acpi_get_gpe_device);
+
+ if (!gpe_device) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+
+ if (index >= acpi_current_gpe_count) {
+ return_ACPI_STATUS(AE_NOT_EXIST);
+ }
+
+ /* Setup and walk the GPE list */
+
+ info.index = index;
+ info.status = AE_NOT_EXIST;
+ info.gpe_device = NULL;
+ info.next_block_base_index = 0;
+
+ status = acpi_ev_walk_gpe_list(acpi_ev_get_gpe_device, &info);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ *gpe_device = info.gpe_device;
+ return_ACPI_STATUS(info.status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_get_gpe_device)
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_get_gpe_device
+ *
+ * PARAMETERS: GPE_WALK_CALLBACK
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Matches the input GPE index (0-current_gpe_count) with a GPE
+ * block device. NULL if the GPE is one of the FADT-defined GPEs.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block, void *context)
+{
+ struct acpi_gpe_device_info *info = context;
+
+ /* Increment Index by the number of GPEs in this block */
+
+ info->next_block_base_index +=
+ (gpe_block->register_count * ACPI_GPE_REGISTER_WIDTH);
+
+ if (info->index < info->next_block_base_index) {
+ /*
+ * The GPE index is within this block, get the node. Leave the node
+ * NULL for the FADT-defined GPEs
+ */
+ if ((gpe_block->node)->type == ACPI_TYPE_DEVICE) {
+ info->gpe_device = gpe_block->node;
+ }
+
+ info->status = AE_OK;
+ return (AE_CTRL_END);
+ }
+
+ return (AE_OK);
+}
diff --git a/drivers/acpi/hardware/hwgpe.c b/drivers/acpi/hardware/hwgpe.c
index 0b80db9..5ab7cac 100644
--- a/drivers/acpi/hardware/hwgpe.c
+++ b/drivers/acpi/hardware/hwgpe.c
@@ -51,7 +51,8 @@ ACPI_MODULE_NAME("hwgpe")
/* Local prototypes */
static acpi_status
acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block);
+ struct acpi_gpe_block_info *gpe_block,
+ void *context);
/******************************************************************************
*
@@ -260,8 +261,8 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
******************************************************************************/
acpi_status
-acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
- struct acpi_gpe_block_info * gpe_block)
+acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block, void *context)
{
u32 i;
acpi_status status;
@@ -297,8 +298,8 @@ acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
******************************************************************************/
acpi_status
-acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
- struct acpi_gpe_block_info * gpe_block)
+acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block, void *context)
{
u32 i;
acpi_status status;
@@ -335,8 +336,8 @@ acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
******************************************************************************/
acpi_status
-acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
- struct acpi_gpe_block_info * gpe_block)
+acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block, void *context)
{
u32 i;
acpi_status status;
@@ -382,7 +383,8 @@ acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
static acpi_status
acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block)
+ struct acpi_gpe_block_info *gpe_block,
+ void *context)
{
u32 i;
acpi_status status;
@@ -427,8 +429,8 @@ acpi_status acpi_hw_disable_all_gpes(void)
ACPI_FUNCTION_TRACE(hw_disable_all_gpes);
- status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block);
- status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block);
+ status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
+ status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block, NULL);
return_ACPI_STATUS(status);
}
@@ -450,7 +452,7 @@ acpi_status acpi_hw_enable_all_runtime_gpes(void)
ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes);
- status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block);
+ status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block, NULL);
return_ACPI_STATUS(status);
}
@@ -472,6 +474,6 @@ acpi_status acpi_hw_enable_all_wakeup_gpes(void)
ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes);
- status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block);
+ status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block, NULL);
return_ACPI_STATUS(status);
}
diff --git a/drivers/acpi/hardware/hwregs.c b/drivers/acpi/hardware/hwregs.c
index ddf792a..69dc8b4 100644
--- a/drivers/acpi/hardware/hwregs.c
+++ b/drivers/acpi/hardware/hwregs.c
@@ -94,7 +94,7 @@ acpi_status acpi_hw_clear_acpi_status(void)
/* Clear the GPE Bits in all GPE registers in all GPE blocks */
- status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block);
+ status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block, NULL);
unlock_and_exit:
acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 6e4107f..391d035 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -192,65 +192,6 @@ static struct attribute_group interrupt_stats_attr_group = {
};
static struct kobj_attribute *counter_attrs;
-static int count_num_gpes(void)
-{
- int count = 0;
- struct acpi_gpe_xrupt_info *gpe_xrupt_info;
- struct acpi_gpe_block_info *gpe_block;
- acpi_cpu_flags flags;
-
- flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
-
- gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
- while (gpe_xrupt_info) {
- gpe_block = gpe_xrupt_info->gpe_block_list_head;
- while (gpe_block) {
- count += gpe_block->register_count *
- ACPI_GPE_REGISTER_WIDTH;
- gpe_block = gpe_block->next;
- }
- gpe_xrupt_info = gpe_xrupt_info->next;
- }
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-
- return count;
-}
-
-static int get_gpe_device(int index, acpi_handle *handle)
-{
- struct acpi_gpe_xrupt_info *gpe_xrupt_info;
- struct acpi_gpe_block_info *gpe_block;
- acpi_cpu_flags flags;
- struct acpi_namespace_node *node;
-
- flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
-
- gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
- while (gpe_xrupt_info) {
- gpe_block = gpe_xrupt_info->gpe_block_list_head;
- node = gpe_block->node;
- while (gpe_block) {
- index -= gpe_block->register_count *
- ACPI_GPE_REGISTER_WIDTH;
- if (index < 0) {
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- /* return NULL if it's FADT GPE */
- if (node->type != ACPI_TYPE_DEVICE)
- *handle = NULL;
- else
- *handle = node;
- return 0;
- }
- node = gpe_block->node;
- gpe_block = gpe_block->next;
- }
- gpe_xrupt_info = gpe_xrupt_info->next;
- }
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-
- return -ENODEV;
-}
-
static void delete_gpe_attr_array(void)
{
struct event_counter *tmp = all_counters;
@@ -309,7 +250,7 @@ static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
goto end;
if (index < num_gpes) {
- result = get_gpe_device(index, handle);
+ result = acpi_get_gpe_device(index, handle);
if (result) {
ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
"Invalid GPE 0x%x\n", index));
@@ -436,7 +377,7 @@ void acpi_irq_stats_init(void)
if (all_counters)
return;
- num_gpes = count_num_gpes();
+ num_gpes = acpi_current_gpe_count;
num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 211d621..06112bf 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -46,9 +46,8 @@
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
-ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
#define _COMPONENT ACPI_UTILITIES
- ACPI_MODULE_NAME("utglobal")
+ACPI_MODULE_NAME("utglobal")
/*******************************************************************************
*
@@ -756,6 +755,7 @@ acpi_status acpi_ut_init_globals(void)
acpi_gbl_gpe_xrupt_list_head = NULL;
acpi_gbl_gpe_fadt_blocks[0] = NULL;
acpi_gbl_gpe_fadt_blocks[1] = NULL;
+ acpi_current_gpe_count = 0;
/* Global handlers */
@@ -816,5 +816,7 @@ acpi_status acpi_ut_init_globals(void)
return_ACPI_STATUS(AE_OK);
}
+ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
ACPI_EXPORT_SYMBOL(acpi_dbg_level)
ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
+ACPI_EXPORT_SYMBOL(acpi_current_gpe_count)
diff --git a/include/acpi/acevents.h b/include/acpi/acevents.h
index d5d099b..07e2013 100644
--- a/include/acpi/acevents.h
+++ b/include/acpi/acevents.h
@@ -93,11 +93,13 @@ struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
*/
u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info);
-acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback);
+acpi_status
+acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context);
acpi_status
acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block);
+ struct acpi_gpe_block_info *gpe_block,
+ void *context);
acpi_status
acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
diff --git a/include/acpi/acglobal.h b/include/acpi/acglobal.h
index 90cc820..78f3c14 100644
--- a/include/acpi/acglobal.h
+++ b/include/acpi/acglobal.h
@@ -326,6 +326,7 @@ ACPI_EXTERN struct acpi_fixed_event_handler
ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head;
ACPI_EXTERN struct acpi_gpe_block_info
*acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS];
+ACPI_EXTERN u32 acpi_current_gpe_count;
/*****************************************************************************
*
diff --git a/include/acpi/achware.h b/include/acpi/achware.h
index 97a72b1..960f816 100644
--- a/include/acpi/achware.h
+++ b/include/acpi/achware.h
@@ -94,13 +94,13 @@ acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info *gpe_event_info);
acpi_status
acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block);
+ struct acpi_gpe_block_info *gpe_block, void *context);
acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info *gpe_event_info);
acpi_status
acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block);
+ struct acpi_gpe_block_info *gpe_block, void *context);
acpi_status
acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
@@ -114,7 +114,8 @@ acpi_status acpi_hw_enable_all_wakeup_gpes(void);
acpi_status
acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block);
+ struct acpi_gpe_block_info *gpe_block,
+ void *context);
#ifdef ACPI_FUTURE_USAGE
/*
diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index 0323fa9..b434960 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -487,10 +487,15 @@ struct acpi_gpe_walk_info {
struct acpi_gpe_block_info *gpe_block;
};
-typedef acpi_status(*acpi_gpe_callback) (struct acpi_gpe_xrupt_info *
- gpe_xrupt_info,
- struct acpi_gpe_block_info *
- gpe_block);
+struct acpi_gpe_device_info {
+ u32 index;
+ u32 next_block_base_index;
+ acpi_status status;
+ struct acpi_namespace_node *gpe_device;
+};
+
+typedef acpi_status(*acpi_gpe_callback) (struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block, void *context);
/* Information about each particular fixed event */
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index be0aa5e..e09c237 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -265,6 +265,8 @@ acpi_get_gpe_status(acpi_handle gpe_device,
u32 gpe_number,
u32 flags, acpi_event_status * event_status);
+acpi_status acpi_get_gpe_device(u32 gpe_index, acpi_handle *gpe_device);
+
acpi_status
acpi_install_gpe_block(acpi_handle gpe_device,
struct acpi_generic_address *gpe_block_address,
--
1.5.6.6
--
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