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b57a73f8e7
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
/*-
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* Copyright (c) 2002 Mitsuru IWASAKI
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/******************************************************************************
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*
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* Name: acpica_machdep.h - arch-specific defines, etc.
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* $Revision$
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*
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*****************************************************************************/
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#ifndef __ACPICA_MACHDEP_H__
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#define __ACPICA_MACHDEP_H__
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#ifdef _KERNEL
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/*
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* Calling conventions:
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*
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* ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
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* ACPI_EXTERNAL_XFACE - External ACPI interfaces
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* ACPI_INTERNAL_XFACE - Internal ACPI interfaces
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* ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
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*/
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#define ACPI_SYSTEM_XFACE
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#define ACPI_EXTERNAL_XFACE
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#define ACPI_INTERNAL_XFACE
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#define ACPI_INTERNAL_VAR_XFACE
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/* Asm macros */
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#define ACPI_ASM_MACROS
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#define BREAKPOINT3
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#define ACPI_DISABLE_IRQS() disable_intr()
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#define ACPI_ENABLE_IRQS() enable_intr()
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#define ACPI_FLUSH_CPU_CACHE() wbinvd()
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/* Section 5.2.10.1: global lock acquire/release functions */
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int acpi_acquire_global_lock(volatile uint32_t *);
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int acpi_release_global_lock(volatile uint32_t *);
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#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) do { \
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(Acq) = acpi_acquire_global_lock(&((GLptr)->GlobalLock)); \
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} while (0)
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#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) do { \
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(Acq) = acpi_release_global_lock(&((GLptr)->GlobalLock)); \
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} while (0)
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enum intr_trigger;
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enum intr_polarity;
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void acpi_SetDefaultIntrModel(int model);
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void acpi_cpu_c1(void);
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void acpi_cpu_idle_mwait(uint32_t mwait_hint);
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void *acpi_map_table(vm_paddr_t pa, const char *sig);
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void acpi_unmap_table(void *table);
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vm_paddr_t acpi_find_table(const char *sig);
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void madt_parse_interrupt_values(void *entry,
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enum intr_trigger *trig, enum intr_polarity *pol);
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extern int madt_found_sci_override;
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#endif /* _KERNEL */
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#endif /* __ACPICA_MACHDEP_H__ */
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