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Merge branch 'gpe-regression-fixes' into release

hifive-unleashed-5.1
Len Brown 2010-06-12 00:51:49 -04:00
parent 7e27d6e778 9d3c752de6
commit 9263482557
9 changed files with 148 additions and 162 deletions
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4
drivers/acpi/acpica/acevents.h
View File

@ -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);

6
drivers/acpi/acpica/achware.h
View File

@ -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);

115
drivers/acpi/acpica/evgpe.c
View File

@ -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]",

14
drivers/acpi/acpica/evgpeblk.c
View File

@ -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)) {

7
drivers/acpi/acpica/evxface.c
View File

@ -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);

59
drivers/acpi/acpica/evxfevnt.c
View File

@ -208,6 +208,44 @@ acpi_status acpi_enable_event(u32 event, u32 flags)
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
@ -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);
}
}

96
drivers/acpi/acpica/hwgpe.c
View File

@ -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 to be disabled
* PARAMETERS: gpe_event_info - Info block for the GPE
* gpe_register_info - Info block for the GPE register
*
* RETURN: Status
*
* DESCRIPTION: Disable a single GPE in the enable register.
* DESCRIPTION: Compute GPE enable mask with one bit corresponding to the given
* GPE set.
*
******************************************************************************/
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)
{
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: Enable or disable a single GPE in its enable register.
*
******************************************************************************/
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?) */

6
drivers/acpi/system.c
View File

@ -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);

3
include/acpi/actypes.h
View File

@ -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 */