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| author | kib <kib@FreeBSD.org> | 2015-05-09 12:28:48 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2015-05-09 12:28:48 +0000 |
| commit | 6006bf3a7dfd2f9b0bf0be6700967a1ab993b8a0 (patch) | |
| tree | 4fbee808b24332d8ef01cb71eaaf6ca38551cfb9 /sys/dev/acpica/acpivar.h | |
| parent | 4f7fc385cadf246ec334db975b16c0e1743e87da (diff) | |
| download | FreeBSD-src-6006bf3a7dfd2f9b0bf0be6700967a1ab993b8a0.zip FreeBSD-src-6006bf3a7dfd2f9b0bf0be6700967a1ab993b8a0.tar.gz | |
If x86 CPU implementation of the MWAIT instruction reasonably
interacts with interrupts, query ACPI and use MWAIT for entrance into
Cx sleep states. Support C1 "I/O then halt" mode. See Intel'
document 302223-007 "Intelб╝ Processor Vendor-Specific ACPI Interface
Specification" for description.
Move the acpi_cpu_c1() function into x86/cpu_machdep.c and use
it instead of inlining "sti; hlt" sequence in several places.
In the acpi(4) man page, besides documenting the dev.cpu.N.cx_methods
sysctl, correct the names for dev.cpu.N.{cx_usage,cx_lowest,cx_supported}
sysctls.
Both jkim and avg have some other patches implementing the mwait
functionality; this work is unrelated. Linux does not rely on the
ACPI to provide correct tables describing Cx modes. Instead, the
driver has pre-defined knowledge of the CPU models, it was supplied by
Intel.
Tested by: pho (previous versions)
Sponsored by: The FreeBSD Foundation
Diffstat (limited to 'sys/dev/acpica/acpivar.h')
| -rw-r--r-- | sys/dev/acpica/acpivar.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpivar.h b/sys/dev/acpica/acpivar.h index 2e2b96d..cbd4bd9 100644 --- a/sys/dev/acpica/acpivar.h +++ b/sys/dev/acpica/acpivar.h @@ -467,6 +467,8 @@ int acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst); int acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size); int acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type, int *rid, struct resource **dst, u_int flags); +int acpi_PkgFFH_IntelCpu(ACPI_OBJECT *res, int idx, int *vendor, + int *class, uint64_t *address, int *accsize); ACPI_HANDLE acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj); /* |
