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ACPICA: New: acpi_get_gpe_device interface

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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@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:
Bob Moore
2008-12-30 09:45:17 +08:00
committed by Len Brown
parent c1e3523ccb
commit e97d6bf1a0
12 changed files with 156 additions and 92 deletions
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63
drivers/acpi/system.c
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@@ -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),