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authorLen Brown <len.brown@intel.com>2010-06-12 00:51:49 -0400
committerLen Brown <len.brown@intel.com>2010-06-12 00:51:49 -0400
commit92634825571d86417941855a8e3189c07aa3c706 (patch)
tree92d30f0714607684642487145ff27ca56b59b9e1
parent7e27d6e778cd87b6f2415515d7127eba53fe5d02 (diff)
parent9d3c752de65dbfa6e522f1d666deb0ac152ef367 (diff)
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Merge branch 'gpe-regression-fixes' into release
-rw-r--r--drivers/acpi/acpica/acevents.h4
-rw-r--r--drivers/acpi/acpica/achware.h6
-rw-r--r--drivers/acpi/acpica/evgpe.c115
-rw-r--r--drivers/acpi/acpica/evgpeblk.c14
-rw-r--r--drivers/acpi/acpica/evxface.c7
-rw-r--r--drivers/acpi/acpica/evxfevnt.c59
-rw-r--r--drivers/acpi/acpica/hwgpe.c94
-rw-r--r--drivers/acpi/system.c6
-rw-r--r--include/acpi/actypes.h3
9 files changed, 147 insertions, 161 deletions
diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index 64d1e5c2d4a..c3f43daa8be 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -80,10 +80,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list);
acpi_status
acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info);
-acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info);
-
-acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info);
-
struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
u32 gpe_number);
diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h
index 5900f135dc6..32391588e16 100644
--- a/drivers/acpi/acpica/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -90,7 +90,11 @@ acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width);
/*
* hwgpe - GPE support
*/
-acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info);
+u32 acpi_hw_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info,
+ struct acpi_gpe_register_info *gpe_register_info);
+
+acpi_status
+acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 action);
acpi_status
acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info *gpe_event_info);
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index a221ad40416..7c2c336006a 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -69,7 +69,7 @@ acpi_status
acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info)
{
struct acpi_gpe_register_info *gpe_register_info;
- u8 register_bit;
+ u32 register_bit;
ACPI_FUNCTION_TRACE(ev_update_gpe_enable_masks);
@@ -78,9 +78,8 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info)
return_ACPI_STATUS(AE_NOT_EXIST);
}
- register_bit = (u8)
- (1 <<
- (gpe_event_info->gpe_number - gpe_register_info->base_gpe_number));
+ register_bit = acpi_hw_gpe_register_bit(gpe_event_info,
+ gpe_register_info);
/* Clear the wake/run bits up front */
@@ -100,106 +99,6 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info)
return_ACPI_STATUS(AE_OK);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_enable_gpe
- *
- * PARAMETERS: gpe_event_info - GPE to enable
- *
- * RETURN: Status
- *
- * DESCRIPTION: Hardware-enable a GPE. Always enables the GPE, regardless
- * of type or number of references.
- *
- * Note: The GPE lock should be already acquired when this function is called.
- *
- ******************************************************************************/
-
-acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
-{
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE(ev_enable_gpe);
-
-
- /*
- * We will only allow a GPE to be enabled if it has either an
- * associated method (_Lxx/_Exx) or a handler. Otherwise, the
- * GPE will be immediately disabled by acpi_ev_gpe_dispatch the
- * first time it fires.
- */
- if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)) {
- return_ACPI_STATUS(AE_NO_HANDLER);
- }
-
- /* Ensure the HW enable masks are current */
-
- status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* Clear the GPE (of stale events) */
-
- status = acpi_hw_clear_gpe(gpe_event_info);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* Enable the requested GPE */
-
- status = acpi_hw_write_gpe_enable_reg(gpe_event_info);
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_disable_gpe
- *
- * PARAMETERS: gpe_event_info - GPE to disable
- *
- * RETURN: Status
- *
- * DESCRIPTION: Hardware-disable a GPE. Always disables the requested GPE,
- * regardless of the type or number of references.
- *
- * Note: The GPE lock should be already acquired when this function is called.
- *
- ******************************************************************************/
-
-acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
-{
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(ev_disable_gpe);
-
-
- /*
- * Note: Always disable the GPE, even if we think that that it is already
- * disabled. It is possible that the AML or some other code has enabled
- * the GPE behind our back.
- */
-
- /* Ensure the HW enable masks are current */
-
- status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /*
- * Always H/W disable this GPE, even if we don't know the GPE type.
- * Simply clear the enable bit for this particular GPE, but do not
- * write out the current GPE enable mask since this may inadvertently
- * enable GPEs too early. An example is a rogue GPE that has arrived
- * during ACPICA initialization - possibly because AML or other code
- * has enabled the GPE.
- */
- status = acpi_hw_low_disable_gpe(gpe_event_info);
- return_ACPI_STATUS(status);
-}
-
/*******************************************************************************
*
@@ -451,10 +350,6 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
return_VOID;
}
- /* Update the GPE register masks for return to enabled state */
-
- (void)acpi_ev_update_gpe_enable_masks(gpe_event_info);
-
/*
* Take a snapshot of the GPE info for this level - we copy the info to
* prevent a race condition with remove_handler/remove_block.
@@ -607,7 +502,7 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
* Disable the GPE, so it doesn't keep firing before the method has a
* chance to run (it runs asynchronously with interrupts enabled).
*/
- status = acpi_ev_disable_gpe(gpe_event_info);
+ status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE[0x%2X]",
@@ -644,7 +539,7 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
* Disable the GPE. The GPE will remain disabled a handler
* is installed or ACPICA is restarted.
*/
- status = acpi_ev_disable_gpe(gpe_event_info);
+ status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE[0x%2X]",
diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c
index 7c28f2d9fd3..341a38ce8aa 100644
--- a/drivers/acpi/acpica/evgpeblk.c
+++ b/drivers/acpi/acpica/evgpeblk.c
@@ -500,6 +500,19 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
gpe_index = (i * ACPI_GPE_REGISTER_WIDTH) + j;
gpe_event_info = &gpe_block->event_info[gpe_index];
+ gpe_number = gpe_index + gpe_block->block_base_number;
+
+ /*
+ * If the GPE has already been enabled for runtime
+ * signaling, make sure it remains enabled, but do not
+ * increment its reference counter.
+ */
+ if (gpe_event_info->runtime_count) {
+ acpi_set_gpe(gpe_device, gpe_number,
+ ACPI_GPE_ENABLE);
+ gpe_enabled_count++;
+ continue;
+ }
if (gpe_event_info->flags & ACPI_GPE_CAN_WAKE) {
wake_gpe_count++;
@@ -516,7 +529,6 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
/* Enable this GPE */
- gpe_number = gpe_index + gpe_block->block_base_number;
status = acpi_enable_gpe(gpe_device, gpe_number,
ACPI_GPE_TYPE_RUNTIME);
if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index cc825023012..4a531cdf794 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -719,13 +719,6 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
handler->context = context;
handler->method_node = gpe_event_info->dispatch.method_node;
- /* Disable the GPE before installing the handler */
-
- status = acpi_ev_disable_gpe(gpe_event_info);
- if (ACPI_FAILURE (status)) {
- goto unlock_and_exit;
- }
-
/* Install the handler */
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index d5a5efc043b..d97b8dce166 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -210,6 +210,44 @@ ACPI_EXPORT_SYMBOL(acpi_enable_event)
/*******************************************************************************
*
+ * FUNCTION: acpi_clear_and_enable_gpe
+ *
+ * PARAMETERS: gpe_event_info - GPE to enable
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Clear the given GPE from stale events and enable it.
+ *
+ ******************************************************************************/
+static acpi_status
+acpi_clear_and_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
+{
+ acpi_status status;
+
+ /*
+ * We will only allow a GPE to be enabled if it has either an
+ * associated method (_Lxx/_Exx) or a handler. Otherwise, the
+ * GPE will be immediately disabled by acpi_ev_gpe_dispatch the
+ * first time it fires.
+ */
+ if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)) {
+ return_ACPI_STATUS(AE_NO_HANDLER);
+ }
+
+ /* Clear the GPE (of stale events) */
+ status = acpi_hw_clear_gpe(gpe_event_info);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Enable the requested GPE */
+ status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE);
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_set_gpe
*
* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
@@ -249,11 +287,11 @@ acpi_status acpi_set_gpe(acpi_handle gpe_device, u32 gpe_number, u8 action)
switch (action) {
case ACPI_GPE_ENABLE:
- status = acpi_ev_enable_gpe(gpe_event_info);
+ status = acpi_clear_and_enable_gpe(gpe_event_info);
break;
case ACPI_GPE_DISABLE:
- status = acpi_ev_disable_gpe(gpe_event_info);
+ status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
break;
default:
@@ -316,7 +354,11 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
gpe_event_info->runtime_count++;
if (gpe_event_info->runtime_count == 1) {
- status = acpi_ev_enable_gpe(gpe_event_info);
+ status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
+ if (ACPI_SUCCESS(status)) {
+ status = acpi_clear_and_enable_gpe(gpe_event_info);
+ }
+
if (ACPI_FAILURE(status)) {
gpe_event_info->runtime_count--;
goto unlock_and_exit;
@@ -343,7 +385,7 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
*/
gpe_event_info->wakeup_count++;
if (gpe_event_info->wakeup_count == 1) {
- (void)acpi_ev_update_gpe_enable_masks(gpe_event_info);
+ status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
}
}
@@ -403,7 +445,12 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
gpe_event_info->runtime_count--;
if (!gpe_event_info->runtime_count) {
- status = acpi_ev_disable_gpe(gpe_event_info);
+ status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
+ if (ACPI_SUCCESS(status)) {
+ status = acpi_hw_low_set_gpe(gpe_event_info,
+ ACPI_GPE_DISABLE);
+ }
+
if (ACPI_FAILURE(status)) {
gpe_event_info->runtime_count++;
goto unlock_and_exit;
@@ -424,7 +471,7 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
gpe_event_info->wakeup_count--;
if (!gpe_event_info->wakeup_count) {
- (void)acpi_ev_update_gpe_enable_masks(gpe_event_info);
+ status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
}
}
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index bd72319a38f..3450309c278 100644
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -57,21 +57,47 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
/******************************************************************************
*
- * FUNCTION: acpi_hw_low_disable_gpe
+ * FUNCTION: acpi_hw_gpe_register_bit
+ *
+ * PARAMETERS: gpe_event_info - Info block for the GPE
+ * gpe_register_info - Info block for the GPE register
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Compute GPE enable mask with one bit corresponding to the given
+ * GPE set.
+ *
+ ******************************************************************************/
+
+u32 acpi_hw_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info,
+ struct acpi_gpe_register_info *gpe_register_info)
+{
+ return (u32)1 << (gpe_event_info->gpe_number -
+ gpe_register_info->base_gpe_number);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_hw_low_set_gpe
*
* PARAMETERS: gpe_event_info - Info block for the GPE to be disabled
+ * action - Enable or disable
*
* RETURN: Status
*
- * DESCRIPTION: Disable a single GPE in the enable register.
+ * DESCRIPTION: Enable or disable a single GPE in its enable register.
*
******************************************************************************/
-acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
+acpi_status
+acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 action)
{
struct acpi_gpe_register_info *gpe_register_info;
acpi_status status;
u32 enable_mask;
+ u32 register_bit;
+
+ ACPI_FUNCTION_ENTRY();
/* Get the info block for the entire GPE register */
@@ -87,11 +113,27 @@ acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
return (status);
}
- /* Clear just the bit that corresponds to this GPE */
+ /* Set ot clear just the bit that corresponds to this GPE */
- ACPI_CLEAR_BIT(enable_mask, ((u32)1 <<
- (gpe_event_info->gpe_number -
- gpe_register_info->base_gpe_number)));
+ register_bit = acpi_hw_gpe_register_bit(gpe_event_info,
+ gpe_register_info);
+ switch (action) {
+ case ACPI_GPE_COND_ENABLE:
+ if (!(register_bit & gpe_register_info->enable_for_run))
+ return (AE_BAD_PARAMETER);
+
+ case ACPI_GPE_ENABLE:
+ ACPI_SET_BIT(enable_mask, register_bit);
+ break;
+
+ case ACPI_GPE_DISABLE:
+ ACPI_CLEAR_BIT(enable_mask, register_bit);
+ break;
+
+ default:
+ ACPI_ERROR((AE_INFO, "Invalid action\n"));
+ return (AE_BAD_PARAMETER);
+ }
/* Write the updated enable mask */
@@ -116,23 +158,11 @@ acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
acpi_status
acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info * gpe_event_info)
{
- struct acpi_gpe_register_info *gpe_register_info;
acpi_status status;
ACPI_FUNCTION_ENTRY();
- /* Get the info block for the entire GPE register */
-
- gpe_register_info = gpe_event_info->register_info;
- if (!gpe_register_info) {
- return (AE_NOT_EXIST);
- }
-
- /* Write the entire GPE (runtime) enable register */
-
- status = acpi_hw_write(gpe_register_info->enable_for_run,
- &gpe_register_info->enable_address);
-
+ status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_COND_ENABLE);
return (status);
}
@@ -150,21 +180,28 @@ acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info * gpe_event_info)
acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info)
{
+ struct acpi_gpe_register_info *gpe_register_info;
acpi_status status;
- u8 register_bit;
+ u32 register_bit;
ACPI_FUNCTION_ENTRY();
- register_bit = (u8)(1 <<
- (gpe_event_info->gpe_number -
- gpe_event_info->register_info->base_gpe_number));
+ /* Get the info block for the entire GPE register */
+
+ gpe_register_info = gpe_event_info->register_info;
+ if (!gpe_register_info) {
+ return (AE_NOT_EXIST);
+ }
+
+ register_bit = acpi_hw_gpe_register_bit(gpe_event_info,
+ gpe_register_info);
/*
* Write a one to the appropriate bit in the status register to
* clear this GPE.
*/
status = acpi_hw_write(register_bit,
- &gpe_event_info->register_info->status_address);
+ &gpe_register_info->status_address);
return (status);
}
@@ -187,7 +224,7 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
acpi_event_status * event_status)
{
u32 in_byte;
- u8 register_bit;
+ u32 register_bit;
struct acpi_gpe_register_info *gpe_register_info;
acpi_status status;
acpi_event_status local_event_status = 0;
@@ -204,9 +241,8 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
/* Get the register bitmask for this GPE */
- register_bit = (u8)(1 <<
- (gpe_event_info->gpe_number -
- gpe_event_info->register_info->base_gpe_number));
+ register_bit = acpi_hw_gpe_register_bit(gpe_event_info,
+ gpe_register_info);
/* GPE currently enabled? (enabled for runtime?) */
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index c79e789ed03..f8db50a0941 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -388,10 +388,12 @@ static ssize_t counter_set(struct kobject *kobj,
if (index < num_gpes) {
if (!strcmp(buf, "disable\n") &&
(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_set_gpe(handle, index, ACPI_GPE_DISABLE);
+ result = acpi_disable_gpe(handle, index,
+ ACPI_GPE_TYPE_RUNTIME);
else if (!strcmp(buf, "enable\n") &&
!(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_set_gpe(handle, index, ACPI_GPE_ENABLE);
+ result = acpi_enable_gpe(handle, index,
+ ACPI_GPE_TYPE_RUNTIME);
else if (!strcmp(buf, "clear\n") &&
(status & ACPI_EVENT_FLAG_SET))
result = acpi_clear_gpe(handle, index);
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index bade172cad4..d55f4a7b824 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -663,10 +663,11 @@ typedef u32 acpi_event_status;
#define ACPI_GPE_MAX 0xFF
#define ACPI_NUM_GPE 256
-/* Actions for acpi_set_gpe */
+/* Actions for acpi_set_gpe and acpi_hw_low_set_gpe */
#define ACPI_GPE_ENABLE 0
#define ACPI_GPE_DISABLE 1
+#define ACPI_GPE_COND_ENABLE 2
/* gpe_types for acpi_enable_gpe and acpi_disable_gpe */