drivers/acpi/acpica/utinit.c

Source file repositories/reference/linux-study-clean/drivers/acpi/acpica/utinit.c

File Facts

System
Linux kernel
Corpus path
drivers/acpi/acpica/utinit.c
Extension
.c
Size
6988 bytes
Lines
289
Domain
Driver Families
Bucket
drivers/acpi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

while (gpe_block) {
			next_gpe_block = gpe_block->next;
			ACPI_FREE(gpe_block->event_info);
			ACPI_FREE(gpe_block->register_info);
			ACPI_FREE(gpe_block);

			gpe_block = next_gpe_block;
		}
		next_gpe_xrupt_info = gpe_xrupt_info->next;
		ACPI_FREE(gpe_xrupt_info);
		gpe_xrupt_info = next_gpe_xrupt_info;
	}
}
#endif				/* !ACPI_REDUCED_HARDWARE */

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_init_globals
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Initialize ACPICA globals. All globals that require specific
 *              initialization should be initialized here. This allows for
 *              a warm restart.
 *
 ******************************************************************************/

acpi_status acpi_ut_init_globals(void)
{
	acpi_status status;
	u32 i;

	ACPI_FUNCTION_TRACE(ut_init_globals);

	/* Create all memory caches */

	status = acpi_ut_create_caches();
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Address Range lists */

	for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
		acpi_gbl_address_range_list[i] = NULL;
	}

	/* Mutex locked flags */

	for (i = 0; i < ACPI_NUM_MUTEX; i++) {
		acpi_gbl_mutex_info[i].mutex = NULL;
		acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
		acpi_gbl_mutex_info[i].use_count = 0;
	}

	for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
		acpi_gbl_owner_id_mask[i] = 0;
	}

	/* Last owner_ID is never valid */

	acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;

	/* Event counters */

	acpi_method_count = 0;
	acpi_sci_count = 0;
	acpi_gpe_count = 0;

	for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
		acpi_fixed_event_count[i] = 0;
	}

#if (!ACPI_REDUCED_HARDWARE)

	/* GPE/SCI support */

	acpi_gbl_all_gpes_initialized = FALSE;
	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;

	acpi_gbl_global_event_handler = NULL;
	acpi_gbl_sci_handler_list = NULL;

#endif				/* !ACPI_REDUCED_HARDWARE */

Annotation

Implementation Notes