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[Xen-changelog] [linux-2.6.18-xen] [Xen PM] Create -xen version for nece

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Subject: [Xen-changelog] [linux-2.6.18-xen] [Xen PM] Create -xen version for necessary arch files
From: "Xen patchbot-linux-2.6.18-xen" <patchbot-linux-2.6.18-xen@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 27 Jul 2007 02:34:15 -0700
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# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1184847884 -3600
# Node ID ff0ef25ec2042cb3975d789700d34148f6a8d14f
# Parent  5e294e29a43ee8a608d454353ee19b83f72d4757
[Xen PM] Create -xen version for necessary arch files
Signed-off-by Ke Yu <ke.yu@xxxxxxxxx>
Signed-off-by Kevin Tian <kevin.tian@xxxxxxxxx>
---
 arch/i386/kernel/acpi/sleep-xen.c   |  106 ++++++++++++++++++++++++++++
 arch/x86_64/kernel/acpi/sleep-xen.c |  136 ++++++++++++++++++++++++++++++++++++
 2 files changed, 242 insertions(+)

diff -r 5e294e29a43e -r ff0ef25ec204 arch/i386/kernel/acpi/sleep-xen.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/arch/i386/kernel/acpi/sleep-xen.c Thu Jul 19 13:24:44 2007 +0100
@@ -0,0 +1,106 @@
+/*
+ * sleep.c - x86-specific ACPI sleep support.
+ *
+ *  Copyright (C) 2001-2003 Patrick Mochel
+ *  Copyright (C) 2001-2003 Pavel Machek <pavel@xxxxxxx>
+ */
+
+#include <linux/acpi.h>
+#include <linux/bootmem.h>
+#include <linux/dmi.h>
+#include <linux/cpumask.h>
+
+#include <asm/smp.h>
+
+/* address in low memory of the wakeup routine. */
+unsigned long acpi_wakeup_address = 0;
+unsigned long acpi_video_flags;
+extern char wakeup_start, wakeup_end;
+
+extern unsigned long FASTCALL(acpi_copy_wakeup_routine(unsigned long));
+
+/**
+ * acpi_save_state_mem - save kernel state
+ *
+ * Create an identity mapped page table and copy the wakeup routine to
+ * low memory.
+ */
+int acpi_save_state_mem(void)
+{
+       if (!acpi_wakeup_address)
+               return 1;
+       memcpy((void *)acpi_wakeup_address, &wakeup_start,
+              &wakeup_end - &wakeup_start);
+       acpi_copy_wakeup_routine(acpi_wakeup_address);
+
+       return 0;
+}
+
+/*
+ * acpi_restore_state - undo effects of acpi_save_state_mem
+ */
+void acpi_restore_state_mem(void)
+{
+}
+
+/**
+ * acpi_reserve_bootmem - do _very_ early ACPI initialisation
+ *
+ * We allocate a page from the first 1MB of memory for the wakeup
+ * routine for when we come back from a sleep state. The
+ * runtime allocator allows specification of <16MB pages, but not
+ * <1MB pages.
+ */
+void __init acpi_reserve_bootmem(void)
+{
+       if ((&wakeup_end - &wakeup_start) > PAGE_SIZE) {
+               printk(KERN_ERR
+                      "ACPI: Wakeup code way too big, S3 disabled.\n");
+               return;
+       }
+
+       acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE);
+       if (!acpi_wakeup_address)
+               printk(KERN_ERR "ACPI: Cannot allocate lowmem, S3 disabled.\n");
+}
+
+static int __init acpi_sleep_setup(char *str)
+{
+       while ((str != NULL) && (*str != '\0')) {
+               if (strncmp(str, "s3_bios", 7) == 0)
+                       acpi_video_flags = 1;
+               if (strncmp(str, "s3_mode", 7) == 0)
+                       acpi_video_flags |= 2;
+               str = strchr(str, ',');
+               if (str != NULL)
+                       str += strspn(str, ", \t");
+       }
+       return 1;
+}
+
+__setup("acpi_sleep=", acpi_sleep_setup);
+
+static __init int reset_videomode_after_s3(struct dmi_system_id *d)
+{
+       acpi_video_flags |= 2;
+       return 0;
+}
+
+static __initdata struct dmi_system_id acpisleep_dmi_table[] = {
+       {                       /* Reset video mode after returning from ACPI 
S3 sleep */
+        .callback = reset_videomode_after_s3,
+        .ident = "Toshiba Satellite 4030cdt",
+        .matches = {
+                    DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),
+                    },
+        },
+       {}
+};
+
+static int __init acpisleep_dmi_init(void)
+{
+       dmi_check_system(acpisleep_dmi_table);
+       return 0;
+}
+
+core_initcall(acpisleep_dmi_init);
diff -r 5e294e29a43e -r ff0ef25ec204 arch/x86_64/kernel/acpi/sleep-xen.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/arch/x86_64/kernel/acpi/sleep-xen.c       Thu Jul 19 13:24:44 2007 +0100
@@ -0,0 +1,136 @@
+/*
+ *  acpi.c - Architecture-Specific Low-Level ACPI Support
+ *
+ *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@xxxxxxxxx>
+ *  Copyright (C) 2001 Jun Nakajima <jun.nakajima@xxxxxxxxx>
+ *  Copyright (C) 2001 Patrick Mochel <mochel@xxxxxxxx>
+ *  Copyright (C) 2002 Andi Kleen, SuSE Labs (x86-64 port)
+ *  Copyright (C) 2003 Pavel Machek, SuSE Labs
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/bootmem.h>
+#include <linux/acpi.h>
+#include <linux/cpumask.h>
+
+#include <asm/mpspec.h>
+#include <asm/io.h>
+#include <asm/apic.h>
+#include <asm/apicdef.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/io_apic.h>
+#include <asm/proto.h>
+#include <asm/tlbflush.h>
+
+/* --------------------------------------------------------------------------
+                              Low-Level Sleep Support
+   -------------------------------------------------------------------------- 
*/
+
+#ifdef CONFIG_ACPI_SLEEP
+
+/* address in low memory of the wakeup routine. */
+unsigned long acpi_wakeup_address = 0;
+unsigned long acpi_video_flags;
+extern char wakeup_start, wakeup_end;
+
+extern unsigned long FASTCALL(acpi_copy_wakeup_routine(unsigned long));
+
+static pgd_t low_ptr;
+
+static void init_low_mapping(void)
+{
+       pgd_t *slot0 = pgd_offset(current->mm, 0UL);
+       low_ptr = *slot0;
+       set_pgd(slot0, *pgd_offset(current->mm, PAGE_OFFSET));
+       WARN_ON(num_online_cpus() != 1);
+       local_flush_tlb();
+}
+
+/**
+ * acpi_save_state_mem - save kernel state
+ *
+ * Create an identity mapped page table and copy the wakeup routine to
+ * low memory.
+ */
+int acpi_save_state_mem(void)
+{
+       init_low_mapping();
+
+       memcpy((void *)acpi_wakeup_address, &wakeup_start,
+              &wakeup_end - &wakeup_start);
+       acpi_copy_wakeup_routine(acpi_wakeup_address);
+
+       return 0;
+}
+
+/*
+ * acpi_restore_state
+ */
+void acpi_restore_state_mem(void)
+{
+       set_pgd(pgd_offset(current->mm, 0UL), low_ptr);
+       local_flush_tlb();
+}
+
+/**
+ * acpi_reserve_bootmem - do _very_ early ACPI initialisation
+ *
+ * We allocate a page in low memory for the wakeup
+ * routine for when we come back from a sleep state. The
+ * runtime allocator allows specification of <16M pages, but not
+ * <1M pages.
+ */
+void __init acpi_reserve_bootmem(void)
+{
+       acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE);
+       if ((&wakeup_end - &wakeup_start) > PAGE_SIZE)
+               printk(KERN_CRIT
+                      "ACPI: Wakeup code way too big, will crash on attempt to 
suspend\n");
+}
+
+static int __init acpi_sleep_setup(char *str)
+{
+       while ((str != NULL) && (*str != '\0')) {
+               if (strncmp(str, "s3_bios", 7) == 0)
+                       acpi_video_flags = 1;
+               if (strncmp(str, "s3_mode", 7) == 0)
+                       acpi_video_flags |= 2;
+               str = strchr(str, ',');
+               if (str != NULL)
+                       str += strspn(str, ", \t");
+       }
+       return 1;
+}
+
+__setup("acpi_sleep=", acpi_sleep_setup);
+
+#endif                         /*CONFIG_ACPI_SLEEP */
+
+void acpi_pci_link_exit(void)
+{
+}

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