Merge branch 'core/topology' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...

[pandora-kernel.git] / arch / x86 / kernel / acpi / boot.c

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 6516359..f489d7a 100644 (file)
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -37,6 +37,7 @@
 #include <asm/pgtable.h>
 #include <asm/io_apic.h>
 #include <asm/apic.h>
+#include <asm/genapic.h>
 #include <asm/io.h>
 #include <asm/mpspec.h>
 #include <asm/smp.h>
@@ -83,8 +84,6 @@ int acpi_lapic;
 int acpi_ioapic;
 int acpi_strict;
 
-static int disable_irq0_through_ioapic __initdata;
-
 u8 acpi_sci_flags __initdata;
 int acpi_sci_override_gsi __initdata;
 int acpi_skip_timer_override __initdata;
@@ -108,21 +107,6 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
  */
 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
 
-#ifdef CONFIG_X86_64
-
-/* rely on all ACPI tables being in the direct mapping */
-char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
-{
-       if (!phys_addr || !size)
-               return NULL;
-
-       if (phys_addr+size <= (max_pfn_mapped << PAGE_SHIFT) + PAGE_SIZE)
-               return __va(phys_addr);
-
-       return NULL;
-}
-
-#else
 
 /*
  * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
@@ -141,11 +125,15 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
        unsigned long base, offset, mapped_size;
        int idx;
 
-       if (phys + size < 8 * 1024 * 1024)
+       if (!phys || !size)
+               return NULL;
+
+       if (phys+size <= (max_low_pfn_mapped << PAGE_SHIFT))
                return __va(phys);
 
        offset = phys & (PAGE_SIZE - 1);
        mapped_size = PAGE_SIZE - offset;
+       clear_fixmap(FIX_ACPI_END);
        set_fixmap(FIX_ACPI_END, phys);
        base = fix_to_virt(FIX_ACPI_END);
 
@@ -157,13 +145,13 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
                if (--idx < FIX_ACPI_BEGIN)
                        return NULL;    /* cannot handle this */
                phys += PAGE_SIZE;
+               clear_fixmap(idx);
                set_fixmap(idx, phys);
                mapped_size += PAGE_SIZE;
        }
 
        return ((unsigned char *)base + offset);
 }
-#endif
 
 #ifdef CONFIG_PCI_MMCONFIG
 /* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
@@ -992,10 +980,6 @@ void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
        int pin;
        struct mp_config_intsrc mp_irq;
 
-       /* Skip the 8254 timer interrupt (IRQ 0) if requested.  */
-       if (bus_irq == 0 && disable_irq0_through_ioapic)
-               return;
-
        /*
         * Convert 'gsi' to 'ioapic.pin'.
         */
@@ -1062,10 +1046,6 @@ void __init mp_config_acpi_legacy_irqs(void)
        for (i = 0; i < 16; i++) {
                int idx;
 
-               /* Skip the 8254 timer interrupt (IRQ 0) if requested.  */
-               if (i == 0 && disable_irq0_through_ioapic)
-                       continue;
-
                for (idx = 0; idx < mp_irq_entries; idx++) {
                        struct mp_config_intsrc *irq = mp_irqs + idx;
 
@@ -1373,8 +1353,6 @@ static void __init acpi_process_madt(void)
        return;
 }
 
-#ifdef __i386__
-
 static int __init disable_acpi_irq(const struct dmi_system_id *d)
 {
        if (!acpi_force) {
@@ -1425,13 +1403,12 @@ static int __init force_acpi_ht(const struct dmi_system_id *d)
 }
 
 /*
- * Don't register any I/O APIC entries for the 8254 timer IRQ.
+ * Force ignoring BIOS IRQ0 pin2 override
  */
-static int __init
-dmi_disable_irq0_through_ioapic(const struct dmi_system_id *d)
+static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
 {
-       pr_notice("%s detected: disabling IRQ 0 through I/O APIC\n", d->ident);
-       disable_irq0_through_ioapic = 1;
+       pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", d->ident);
+       acpi_skip_timer_override = 1;
        return 0;
 }
 
@@ -1609,11 +1586,11 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
         * is enabled.  This input is incorrectly designated the
         * ISA IRQ 0 via an interrupt source override even though
         * it is wired to the output of the master 8259A and INTIN0
-        * is not connected at all.  Abandon any attempts to route
-        * IRQ 0 through the I/O APIC therefore.
+        * is not connected at all.  Force ignoring BIOS IRQ0 pin2
+        * override in that cases.
         */
        {
-        .callback = dmi_disable_irq0_through_ioapic,
+        .callback = dmi_ignore_irq0_timer_override,
         .ident = "HP NX6125 laptop",
         .matches = {
                     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
@@ -1621,7 +1598,7 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
                     },
         },
        {
-        .callback = dmi_disable_irq0_through_ioapic,
+        .callback = dmi_ignore_irq0_timer_override,
         .ident = "HP NX6325 laptop",
         .matches = {
                     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
@@ -1631,8 +1608,6 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
        {}
 };
 
-#endif                         /* __i386__ */
-
 /*
  * acpi_boot_table_init() and acpi_boot_init()
  *  called from setup_arch(), always.
@@ -1660,9 +1635,7 @@ int __init acpi_boot_table_init(void)
 {
        int error;
 
-#ifdef __i386__
        dmi_check_system(acpi_dmi_table);
-#endif
 
        /*
         * If acpi_disabled, bail out
@@ -1787,6 +1760,20 @@ static int __init parse_pci(char *arg)
 }
 early_param("pci", parse_pci);
 
+int __init acpi_mps_check(void)
+{
+#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
+/* mptable code is not built-in*/
+       if (acpi_disabled || acpi_noirq) {
+               printk(KERN_WARNING "MPS support code is not built-in.\n"
+                      "Using acpi=off or acpi=noirq or pci=noacpi "
+                      "may have problem\n");
+               return 1;
+       }
+#endif
+       return 0;
+}
+
 #ifdef CONFIG_X86_IO_APIC
 static int __init parse_acpi_skip_timer_override(char *arg)
 {