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author | Ingo Molnar <mingo@elte.hu> | 2008-07-18 20:50:34 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 20:50:34 (GMT) |
commit | a208f37a465e222218974ab20a31b42b7b4893b2 (patch) | |
tree | 77c6acdd4be32024330a14f2618b814126ce7a20 /arch/x86/kernel/acpi | |
parent | 511d9d34183662aada3890883e860b151d707e22 (diff) | |
parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
download | linux-fsl-qoriq-a208f37a465e222218974ab20a31b42b7b4893b2.tar.xz |
Merge branch 'linus' into x86/x2apic
Diffstat (limited to 'arch/x86/kernel/acpi')
-rw-r--r-- | arch/x86/kernel/acpi/boot.c | 1 | ||||
-rw-r--r-- | arch/x86/kernel/acpi/processor.c | 6 | ||||
-rw-r--r-- | arch/x86/kernel/acpi/sleep.c | 32 |
3 files changed, 32 insertions, 7 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index b314bcd..b41b27a 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -1411,7 +1411,6 @@ static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) { pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", d->ident); acpi_skip_timer_override = 1; - force_mask_ioapic_irq_2(); return 0; } diff --git a/arch/x86/kernel/acpi/processor.c b/arch/x86/kernel/acpi/processor.c index de2d2e4..7c074ee 100644 --- a/arch/x86/kernel/acpi/processor.c +++ b/arch/x86/kernel/acpi/processor.c @@ -56,6 +56,12 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c) if (cpu_has(c, X86_FEATURE_ACPI)) buf[2] |= ACPI_PDC_T_FFH; + /* + * If mwait/monitor is unsupported, C2/C3_FFH will be disabled + */ + if (!cpu_has(c, X86_FEATURE_MWAIT)) + buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); + obj->type = ACPI_TYPE_BUFFER; obj->buffer.length = 12; obj->buffer.pointer = (u8 *) buf; diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index e6a4b56..868de3d 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -23,6 +23,15 @@ static unsigned long acpi_realmode; static char temp_stack[10240]; #endif +/* XXX: this macro should move to asm-x86/segment.h and be shared with the + boot code... */ +#define GDT_ENTRY(flags, base, limit) \ + (((u64)(base & 0xff000000) << 32) | \ + ((u64)flags << 40) | \ + ((u64)(limit & 0x00ff0000) << 32) | \ + ((u64)(base & 0x00ffffff) << 16) | \ + ((u64)(limit & 0x0000ffff))) + /** * acpi_save_state_mem - save kernel state * @@ -51,18 +60,27 @@ int acpi_save_state_mem(void) header->video_mode = saved_video_mode; header->wakeup_jmp_seg = acpi_wakeup_address >> 4; + + /* + * Set up the wakeup GDT. We set these up as Big Real Mode, + * that is, with limits set to 4 GB. At least the Lenovo + * Thinkpad X61 is known to need this for the video BIOS + * initialization quirk to work; this is likely to also + * be the case for other laptops or integrated video devices. + */ + /* GDT[0]: GDT self-pointer */ header->wakeup_gdt[0] = (u64)(sizeof(header->wakeup_gdt) - 1) + ((u64)(acpi_wakeup_address + ((char *)&header->wakeup_gdt - (char *)acpi_realmode)) << 16); - /* GDT[1]: real-mode-like code segment */ - header->wakeup_gdt[1] = (0x009bULL << 40) + - ((u64)acpi_wakeup_address << 16) + 0xffff; - /* GDT[2]: real-mode-like data segment */ - header->wakeup_gdt[2] = (0x0093ULL << 40) + - ((u64)acpi_wakeup_address << 16) + 0xffff; + /* GDT[1]: big real mode-like code segment */ + header->wakeup_gdt[1] = + GDT_ENTRY(0x809b, acpi_wakeup_address, 0xfffff); + /* GDT[2]: big real mode-like data segment */ + header->wakeup_gdt[2] = + GDT_ENTRY(0x8093, acpi_wakeup_address, 0xfffff); #ifndef CONFIG_64BIT store_gdt((struct desc_ptr *)&header->pmode_gdt); @@ -140,6 +158,8 @@ static int __init acpi_sleep_setup(char *str) acpi_realmode_flags |= 2; if (strncmp(str, "s3_beep", 7) == 0) acpi_realmode_flags |= 4; + if (strncmp(str, "old_ordering", 12) == 0) + acpi_old_suspend_ordering(); str = strchr(str, ','); if (str != NULL) str += strspn(str, ", \t"); |