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Use our saved copy of the FADT rather than fetching it again.

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This commit is contained in:
Mike Smith 2001-07-21 04:05:32 +00:00
parent 67ce16735b
commit ad5dc75bb4
1 changed files with 5 additions and 13 deletions
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18
sys/dev/acpica/acpi_cpu.c
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@ -154,18 +154,10 @@ acpi_cpu_attach(device_t dev)
* Get global parameters from the FADT.
*/
if (device_get_unit(sc->cpu_dev) == 0) {
/* get the FADT */
if (ACPI_FAILURE(status = acpi_GetTableIntoBuffer(ACPI_TABLE_FADT, 1, &buf))) {
device_printf(sc->cpu_dev, "couldn't get FADT - %s\n", acpi_strerror(status));
if (buf.Pointer != NULL)
AcpiOsFree(buf.Pointer);
return_VALUE(ENXIO);
}
cpu_duty_offset = ((FADT_DESCRIPTOR_REV2 *)buf.Pointer)->DutyOffset;
cpu_duty_width = ((FADT_DESCRIPTOR_REV2 *)buf.Pointer)->DutyWidth;
cpu_smi_cmd = ((FADT_DESCRIPTOR_REV1 *)buf.Pointer)->SmiCmd;
cpu_pstate_cnt = ((FADT_DESCRIPTOR_REV2 *)buf.Pointer)->PstateCnt;
AcpiOsFree(buf.Pointer);
cpu_duty_offset = AcpiGbl_FADT->DutyOffset;
cpu_duty_width = AcpiGbl_FADT->DutyWidth;
cpu_smi_cmd = AcpiGbl_FADT->SmiCmd;
cpu_pstate_cnt = AcpiGbl_FADT->PstateCnt;
/* validate the offset/width */
duty_end = cpu_duty_offset + cpu_duty_width - 1;
@ -281,7 +273,7 @@ acpi_cpu_init_throttling(void *arg)
/* if ACPI 2.0+, signal platform that we are taking over throttling */
if (cpu_pstate_cnt != 0) {
/* XXX should be a generic interface for this */
AcpiOsOut8(cpu_smi_cmd, cpu_pstate_cnt);
AcpiOsWritePort(cpu_smi_cmd, cpu_pstate_cnt, 8);
}
ACPI_UNLOCK;