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Add ACPI HPET table support.

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Reviewed by:njl
This commit is contained in:
Takanori Watanabe 2007-05-15 08:41:05 +00:00
parent 7a04b0f625
commit fffe371da3
3 changed files with 42 additions and 2 deletions
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1
sys/dev/acpica/acpi.c
View File

@ -503,6 +503,7 @@ acpi_attach(device_t dev)
* a problem but should be addressed eventually.
*/
acpi_ec_ecdt_probe(dev);
acpi_hpet_table_probe(dev);
/* Bring device objects and regions online. */
if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {

41
sys/dev/acpica/acpi_hpet.c
View File

@ -41,6 +41,8 @@ __FBSDID("$FreeBSD$");
ACPI_SERIAL_DECL(hpet, "ACPI HPET support");
static devclass_t acpi_hpet_devclass;
/* ACPI CA debugging */
#define _COMPONENT ACPI_TIMER
ACPI_MODULE_NAME("HPET")
@ -78,12 +80,48 @@ hpet_get_timecount(struct timecounter *tc)
return (bus_read_4(sc->mem_res, HPET_OFFSET_VALUE));
}
#define DEV_HPET(x) (acpi_get_magic(x) == (int)&acpi_hpet_devclass)
void
acpi_hpet_table_probe(device_t parent)
{
ACPI_TABLE_HPET *hpet;
ACPI_TABLE_HEADER *hdr;
ACPI_STATUS status;
device_t child;
/*Currently, id and minimam clock tick info. is discarded.*/
status = AcpiGetTable(ACPI_SIG_HPET, 1, (ACPI_TABLE_HEADER **)&hdr);
if (ACPI_FAILURE(status))
return;
hpet = (ACPI_TABLE_HPET *) hdr;
/*unit No.hdr->Sequence*/
if(hpet->Sequence)
printf("HPET TABLE:Sequense is non zero %d\n", hpet->Sequence);
child = BUS_ADD_CHILD(parent, 0, "acpi_hpet", 0);
if (child == NULL) {
printf("%s: can't add child\n", __func__);
return;
}
acpi_set_magic(child, (int)&acpi_hpet_devclass);
bus_set_resource(child, SYS_RES_MEMORY, 0, hpet->Address.Address, HPET_MEM_WIDTH);
if(device_probe_and_attach(child) != 0)
device_delete_child(parent, child);
}
static int
acpi_hpet_probe(device_t dev)
{
ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
if (acpi_disabled("hpet") ||
if (acpi_disabled("hpet")||
!DEV_HPET(dev) ||
ACPI_ID_PROBE(device_get_parent(dev), dev, hpet_ids) == NULL ||
device_get_unit(dev) != 0)
return (ENXIO);
@ -211,7 +249,6 @@ static driver_t acpi_hpet_driver = {
sizeof(struct acpi_hpet_softc),
};
static devclass_t acpi_hpet_devclass;
DRIVER_MODULE(acpi_hpet, acpi, acpi_hpet_driver, acpi_hpet_devclass, 0, 0);
MODULE_DEPEND(acpi_hpet, acpi, 1, 1, 1);

2
sys/dev/acpica/acpivar.h
View File

@ -407,6 +407,8 @@ int acpi_battery_get_battinfo(device_t dev,
/* Embedded controller. */
void acpi_ec_ecdt_probe(device_t);
/* HPET table probe*/
void acpi_hpet_table_probe(device_t);
/* AC adapter interface. */
int acpi_acad_get_acline(int *);