mirror of https://gitee.com/openkylin/linux.git
x86: unify arch/x86/kernel/acpi/sleep*.c
Unify arch/x86/kernel/acpi/sleep*.c Pretty trivial unification; when two functions differed, it was usually in error handling, and better of the two was picked up. Signed-off-by: Pavel Machek <pavel@suse.cz> Looks-okay-to: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Pavel Machek
Ingo Molnar
parent
8a19da7b7f
commit
4fc2fba804
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@ -1,5 +1,5 @@
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obj-$(CONFIG_ACPI) += boot.o
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obj-$(CONFIG_ACPI_SLEEP) += sleep_$(BITS).o wakeup_$(BITS).o
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obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o
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ifneq ($(CONFIG_ACPI_PROCESSOR),)
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obj-y += cstate.o processor.o
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@ -0,0 +1,87 @@
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/*
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* sleep.c - x86-specific ACPI sleep support.
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*
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* Copyright (C) 2001-2003 Patrick Mochel
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* Copyright (C) 2001-2003 Pavel Machek <pavel@suse.cz>
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*/
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#include <linux/acpi.h>
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#include <linux/bootmem.h>
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#include <linux/dmi.h>
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#include <linux/cpumask.h>
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#include <asm/smp.h>
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/* address in low memory of the wakeup routine. */
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unsigned long acpi_wakeup_address = 0;
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unsigned long acpi_realmode_flags;
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extern char wakeup_start, wakeup_end;
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extern unsigned long acpi_copy_wakeup_routine(unsigned long);
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/**
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* acpi_save_state_mem - save kernel state
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*
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* Create an identity mapped page table and copy the wakeup routine to
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* low memory.
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*/
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int acpi_save_state_mem(void)
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{
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if (!acpi_wakeup_address) {
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printk(KERN_ERR "Could not allocate memory during boot, S3 disabled\n");
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return -ENOMEM;
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}
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memcpy((void *)acpi_wakeup_address, &wakeup_start,
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&wakeup_end - &wakeup_start);
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acpi_copy_wakeup_routine(acpi_wakeup_address);
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return 0;
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}
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/*
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* acpi_restore_state - undo effects of acpi_save_state_mem
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*/
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void acpi_restore_state_mem(void)
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{
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}
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/**
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* acpi_reserve_bootmem - do _very_ early ACPI initialisation
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*
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* We allocate a page from the first 1MB of memory for the wakeup
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* routine for when we come back from a sleep state. The
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* runtime allocator allows specification of <16MB pages, but not
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* <1MB pages.
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*/
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void __init acpi_reserve_bootmem(void)
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{
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if ((&wakeup_end - &wakeup_start) > PAGE_SIZE*2) {
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printk(KERN_ERR
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"ACPI: Wakeup code way too big, S3 disabled.\n");
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return;
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}
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acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE*2);
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if (!acpi_wakeup_address)
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printk(KERN_ERR "ACPI: Cannot allocate lowmem, S3 disabled.\n");
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}
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static int __init acpi_sleep_setup(char *str)
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{
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while ((str != NULL) && (*str != '\0')) {
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if (strncmp(str, "s3_bios", 7) == 0)
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acpi_realmode_flags |= 1;
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if (strncmp(str, "s3_mode", 7) == 0)
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acpi_realmode_flags |= 2;
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if (strncmp(str, "s3_beep", 7) == 0)
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acpi_realmode_flags |= 4;
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str = strchr(str, ',');
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if (str != NULL)
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str += strspn(str, ", \t");
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}
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return 1;
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}
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__setup("acpi_sleep=", acpi_sleep_setup);
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@ -12,76 +12,6 @@
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#include <asm/smp.h>
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/* address in low memory of the wakeup routine. */
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unsigned long acpi_wakeup_address = 0;
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unsigned long acpi_realmode_flags;
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extern char wakeup_start, wakeup_end;
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extern unsigned long acpi_copy_wakeup_routine(unsigned long);
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/**
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* acpi_save_state_mem - save kernel state
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*
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* Create an identity mapped page table and copy the wakeup routine to
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* low memory.
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*/
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int acpi_save_state_mem(void)
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{
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if (!acpi_wakeup_address)
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return 1;
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memcpy((void *)acpi_wakeup_address, &wakeup_start,
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&wakeup_end - &wakeup_start);
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acpi_copy_wakeup_routine(acpi_wakeup_address);
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return 0;
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}
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/*
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* acpi_restore_state - undo effects of acpi_save_state_mem
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*/
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void acpi_restore_state_mem(void)
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{
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}
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/**
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* acpi_reserve_bootmem - do _very_ early ACPI initialisation
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*
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* We allocate a page from the first 1MB of memory for the wakeup
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* routine for when we come back from a sleep state. The
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* runtime allocator allows specification of <16MB pages, but not
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* <1MB pages.
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*/
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void __init acpi_reserve_bootmem(void)
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{
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if ((&wakeup_end - &wakeup_start) > PAGE_SIZE) {
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printk(KERN_ERR
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"ACPI: Wakeup code way too big, S3 disabled.\n");
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return;
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}
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acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE);
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if (!acpi_wakeup_address)
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printk(KERN_ERR "ACPI: Cannot allocate lowmem, S3 disabled.\n");
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}
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static int __init acpi_sleep_setup(char *str)
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{
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while ((str != NULL) && (*str != '\0')) {
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if (strncmp(str, "s3_bios", 7) == 0)
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acpi_realmode_flags |= 1;
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if (strncmp(str, "s3_mode", 7) == 0)
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acpi_realmode_flags |= 2;
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if (strncmp(str, "s3_beep", 7) == 0)
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acpi_realmode_flags |= 4;
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str = strchr(str, ',');
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if (str != NULL)
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str += strspn(str, ", \t");
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}
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return 1;
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}
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__setup("acpi_sleep=", acpi_sleep_setup);
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/* Ouch, we want to delete this. We already have better version in userspace, in
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s2ram from suspend.sf.net project */
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static __init int reset_videomode_after_s3(const struct dmi_system_id *d)
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@ -1,117 +0,0 @@
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/*
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* acpi.c - Architecture-Specific Low-Level ACPI Support
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*
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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* Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
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* Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
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* Copyright (C) 2002 Andi Kleen, SuSE Labs (x86-64 port)
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* Copyright (C) 2003 Pavel Machek, SuSE Labs
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/stddef.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/bootmem.h>
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#include <linux/acpi.h>
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#include <linux/cpumask.h>
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#include <asm/mpspec.h>
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#include <asm/io.h>
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#include <asm/apic.h>
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#include <asm/apicdef.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/pgalloc.h>
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#include <asm/io_apic.h>
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#include <asm/proto.h>
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#include <asm/tlbflush.h>
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/* --------------------------------------------------------------------------
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Low-Level Sleep Support
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-------------------------------------------------------------------------- */
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/* address in low memory of the wakeup routine. */
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unsigned long acpi_wakeup_address = 0;
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unsigned long acpi_realmode_flags;
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extern char wakeup_start, wakeup_end;
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extern unsigned long acpi_copy_wakeup_routine(unsigned long);
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/**
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* acpi_save_state_mem - save kernel state
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*
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* Create an identity mapped page table and copy the wakeup routine to
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* low memory.
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*/
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int acpi_save_state_mem(void)
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{
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memcpy((void *)acpi_wakeup_address, &wakeup_start,
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&wakeup_end - &wakeup_start);
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acpi_copy_wakeup_routine(acpi_wakeup_address);
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return 0;
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}
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/*
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* acpi_restore_state
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*/
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void acpi_restore_state_mem(void)
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{
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}
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/**
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* acpi_reserve_bootmem - do _very_ early ACPI initialisation
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*
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* We allocate a page in low memory for the wakeup
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* routine for when we come back from a sleep state. The
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* runtime allocator allows specification of <16M pages, but not
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* <1M pages.
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*/
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void __init acpi_reserve_bootmem(void)
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{
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acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE*2);
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if ((&wakeup_end - &wakeup_start) > (PAGE_SIZE*2))
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printk(KERN_CRIT
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"ACPI: Wakeup code way too big, will crash on attempt"
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" to suspend\n");
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}
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static int __init acpi_sleep_setup(char *str)
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{
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while ((str != NULL) && (*str != '\0')) {
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if (strncmp(str, "s3_bios", 7) == 0)
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acpi_realmode_flags |= 1;
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if (strncmp(str, "s3_mode", 7) == 0)
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acpi_realmode_flags |= 2;
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if (strncmp(str, "s3_beep", 7) == 0)
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acpi_realmode_flags |= 4;
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str = strchr(str, ',');
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if (str != NULL)
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str += strspn(str, ", \t");
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}
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return 1;
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}
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__setup("acpi_sleep=", acpi_sleep_setup);
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