6006bf3a7d
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
89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*-
|
|
* Copyright (c) 2002 Mitsuru IWASAKI
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Name: acpica_machdep.h - arch-specific defines, etc.
|
|
* $Revision$
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifndef __ACPICA_MACHDEP_H__
|
|
#define __ACPICA_MACHDEP_H__
|
|
|
|
#ifdef _KERNEL
|
|
/*
|
|
* Calling conventions:
|
|
*
|
|
* ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
|
|
* ACPI_EXTERNAL_XFACE - External ACPI interfaces
|
|
* ACPI_INTERNAL_XFACE - Internal ACPI interfaces
|
|
* ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
|
|
*/
|
|
#define ACPI_SYSTEM_XFACE
|
|
#define ACPI_EXTERNAL_XFACE
|
|
#define ACPI_INTERNAL_XFACE
|
|
#define ACPI_INTERNAL_VAR_XFACE
|
|
|
|
/* Asm macros */
|
|
|
|
#define ACPI_ASM_MACROS
|
|
#define BREAKPOINT3
|
|
#define ACPI_DISABLE_IRQS() disable_intr()
|
|
#define ACPI_ENABLE_IRQS() enable_intr()
|
|
|
|
#define ACPI_FLUSH_CPU_CACHE() wbinvd()
|
|
|
|
/* Section 5.2.10.1: global lock acquire/release functions */
|
|
int acpi_acquire_global_lock(volatile uint32_t *);
|
|
int acpi_release_global_lock(volatile uint32_t *);
|
|
#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) do { \
|
|
(Acq) = acpi_acquire_global_lock(&((GLptr)->GlobalLock)); \
|
|
} while (0)
|
|
#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) do { \
|
|
(Acq) = acpi_release_global_lock(&((GLptr)->GlobalLock)); \
|
|
} while (0)
|
|
|
|
enum intr_trigger;
|
|
enum intr_polarity;
|
|
|
|
void acpi_SetDefaultIntrModel(int model);
|
|
void acpi_cpu_c1(void);
|
|
void acpi_cpu_idle_mwait(uint32_t mwait_hint);
|
|
void *acpi_map_table(vm_paddr_t pa, const char *sig);
|
|
void acpi_unmap_table(void *table);
|
|
vm_paddr_t acpi_find_table(const char *sig);
|
|
void madt_parse_interrupt_values(void *entry,
|
|
enum intr_trigger *trig, enum intr_polarity *pol);
|
|
|
|
extern int madt_found_sci_override;
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* __ACPICA_MACHDEP_H__ */
|