Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 132 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/acpi/sleep.c b/arch/x86_64/kernel/acpi/sleep.c
new file mode 100644
index 000000000000..7a275de6df22
--- /dev/null
+++ b/arch/x86_64/kernel/acpi/sleep.c
@@ -0,0 +1,132 @@
+/*
+ *  acpi.c - Architecture-Specific Low-Level ACPI Support
+ *
+ *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ *  Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
+ *  Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
+ *  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/config.h>
+#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/irq.h>
+#include <linux/acpi.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));
+        flush_tlb_all();
+}
+
+/**
+ * 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);
+        flush_tlb_all();
+}
+
+/**
+ * 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) {}