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173 lines
4.6 KiB
173 lines
4.6 KiB
#ifndef _ASM_X86_ACPI_H |
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#define _ASM_X86_ACPI_H |
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/* |
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* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
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* Copyright (C) 2001 Patrick Mochel <mochel@osdl.org> |
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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 <acpi/pdc_intel.h> |
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#include <asm/numa.h> |
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#include <asm/fixmap.h> |
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#include <asm/processor.h> |
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#include <asm/mmu.h> |
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#include <asm/mpspec.h> |
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#include <asm/realmode.h> |
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#ifdef CONFIG_ACPI_APEI |
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# include <asm/pgtable_types.h> |
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#endif |
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#ifdef CONFIG_ACPI |
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extern int acpi_lapic; |
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extern int acpi_ioapic; |
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extern int acpi_noirq; |
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extern int acpi_strict; |
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extern int acpi_disabled; |
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extern int acpi_pci_disabled; |
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extern int acpi_skip_timer_override; |
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extern int acpi_use_timer_override; |
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extern int acpi_fix_pin2_polarity; |
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extern int acpi_disable_cmcff; |
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extern u8 acpi_sci_flags; |
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extern int acpi_sci_override_gsi; |
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void acpi_pic_sci_set_trigger(unsigned int, u16); |
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extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi, |
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int trigger, int polarity); |
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extern void (*__acpi_unregister_gsi)(u32 gsi); |
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static inline void disable_acpi(void) |
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{ |
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acpi_disabled = 1; |
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acpi_pci_disabled = 1; |
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acpi_noirq = 1; |
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} |
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extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq); |
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static inline void acpi_noirq_set(void) { acpi_noirq = 1; } |
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static inline void acpi_disable_pci(void) |
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{ |
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acpi_pci_disabled = 1; |
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acpi_noirq_set(); |
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} |
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/* Low-level suspend routine. */ |
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extern int (*acpi_suspend_lowlevel)(void); |
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/* Physical address to resume after wakeup */ |
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#define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start)) |
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/* |
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* Check if the CPU can handle C2 and deeper |
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*/ |
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static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate) |
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{ |
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/* |
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* Early models (<=5) of AMD Opterons are not supposed to go into |
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* C2 state. |
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* |
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* Steppings 0x0A and later are good |
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*/ |
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if (boot_cpu_data.x86 == 0x0F && |
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boot_cpu_data.x86_vendor == X86_VENDOR_AMD && |
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boot_cpu_data.x86_model <= 0x05 && |
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boot_cpu_data.x86_mask < 0x0A) |
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return 1; |
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else if (amd_e400_c1e_detected) |
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return 1; |
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else |
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return max_cstate; |
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} |
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static inline bool arch_has_acpi_pdc(void) |
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{ |
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struct cpuinfo_x86 *c = &cpu_data(0); |
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return (c->x86_vendor == X86_VENDOR_INTEL || |
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c->x86_vendor == X86_VENDOR_CENTAUR); |
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} |
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static inline void arch_acpi_set_pdc_bits(u32 *buf) |
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{ |
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struct cpuinfo_x86 *c = &cpu_data(0); |
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buf[2] |= ACPI_PDC_C_CAPABILITY_SMP; |
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if (cpu_has(c, X86_FEATURE_EST)) |
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buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP; |
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if (cpu_has(c, X86_FEATURE_ACPI)) |
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buf[2] |= ACPI_PDC_T_FFH; |
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/* |
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* If mwait/monitor is unsupported, C2/C3_FFH will be disabled |
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*/ |
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if (!cpu_has(c, X86_FEATURE_MWAIT)) |
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buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); |
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} |
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static inline bool acpi_has_cpu_in_madt(void) |
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{ |
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return !!acpi_lapic; |
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} |
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#else /* !CONFIG_ACPI */ |
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#define acpi_lapic 0 |
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#define acpi_ioapic 0 |
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#define acpi_disable_cmcff 0 |
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static inline void acpi_noirq_set(void) { } |
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static inline void acpi_disable_pci(void) { } |
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static inline void disable_acpi(void) { } |
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#endif /* !CONFIG_ACPI */ |
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#define ARCH_HAS_POWER_INIT 1 |
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#ifdef CONFIG_ACPI_NUMA |
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extern int acpi_numa; |
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extern int x86_acpi_numa_init(void); |
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#endif /* CONFIG_ACPI_NUMA */ |
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#define acpi_unlazy_tlb(x) leave_mm(x) |
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#ifdef CONFIG_ACPI_APEI |
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static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr) |
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{ |
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/* |
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* We currently have no way to look up the EFI memory map |
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* attributes for a region in a consistent way, because the |
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* memmap is discarded after efi_free_boot_services(). So if |
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* you call efi_mem_attributes() during boot and at runtime, |
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* you could theoretically see different attributes. |
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* |
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* Since we are yet to see any x86 platforms that require |
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* anything other than PAGE_KERNEL (some arm64 platforms |
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* require the equivalent of PAGE_KERNEL_NOCACHE), return that |
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* until we know differently. |
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*/ |
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return PAGE_KERNEL; |
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} |
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#endif |
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#endif /* _ASM_X86_ACPI_H */
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