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| 6588 | serge | 1 | #ifndef _ASM_X86_ACPI_H |
| 2 | #define _ASM_X86_ACPI_H |
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| 3 | |||
| 4 | /* |
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| 5 | * Copyright (C) 2001 Paul Diefenbaugh |
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| 6 | * Copyright (C) 2001 Patrick Mochel |
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| 7 | * |
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| 8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 9 | * |
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| 10 | * This program is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License as published by |
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| 12 | * the Free Software Foundation; either version 2 of the License, or |
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| 13 | * (at your option) any later version. |
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| 14 | * |
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| 15 | * This program is distributed in the hope that it will be useful, |
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 18 | * GNU General Public License for more details. |
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| 19 | * |
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| 20 | * You should have received a copy of the GNU General Public License |
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| 21 | * along with this program; if not, write to the Free Software |
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| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 23 | * |
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| 24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 25 | */ |
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| 26 | #include |
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| 27 | |||
| 28 | #include |
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| 29 | #include |
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| 30 | #include |
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| 31 | |||
| 32 | #ifdef CONFIG_ACPI_APEI |
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| 33 | # include |
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| 34 | #endif |
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| 35 | |||
| 36 | #ifdef CONFIG_ACPI |
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| 37 | extern int acpi_lapic; |
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| 38 | extern int acpi_ioapic; |
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| 39 | extern int acpi_noirq; |
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| 40 | extern int acpi_strict; |
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| 41 | extern int acpi_disabled; |
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| 42 | extern int acpi_pci_disabled; |
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| 43 | extern int acpi_skip_timer_override; |
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| 44 | extern int acpi_use_timer_override; |
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| 45 | extern int acpi_fix_pin2_polarity; |
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| 46 | extern int acpi_disable_cmcff; |
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| 47 | |||
| 48 | extern u8 acpi_sci_flags; |
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| 49 | extern int acpi_sci_override_gsi; |
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| 50 | void acpi_pic_sci_set_trigger(unsigned int, u16); |
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| 51 | |||
| 52 | extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi, |
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| 53 | int trigger, int polarity); |
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| 54 | extern void (*__acpi_unregister_gsi)(u32 gsi); |
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| 55 | |||
| 56 | static inline void disable_acpi(void) |
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| 57 | { |
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| 58 | acpi_disabled = 1; |
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| 59 | acpi_pci_disabled = 1; |
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| 60 | acpi_noirq = 1; |
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| 61 | } |
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| 62 | |||
| 63 | extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq); |
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| 64 | |||
| 65 | static inline void acpi_noirq_set(void) { acpi_noirq = 1; } |
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| 66 | static inline void acpi_disable_pci(void) |
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| 67 | { |
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| 68 | acpi_pci_disabled = 1; |
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| 69 | acpi_noirq_set(); |
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| 70 | } |
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| 71 | |||
| 72 | /* Low-level suspend routine. */ |
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| 73 | extern int (*acpi_suspend_lowlevel)(void); |
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| 74 | |||
| 75 | /* Physical address to resume after wakeup */ |
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| 76 | #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start)) |
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| 77 | |||
| 78 | /* |
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| 79 | * Check if the CPU can handle C2 and deeper |
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| 80 | */ |
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| 81 | static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate) |
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| 82 | { |
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| 83 | /* |
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| 84 | * Early models (<=5) of AMD Opterons are not supposed to go into |
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| 85 | * C2 state. |
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| 86 | * |
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| 87 | * Steppings 0x0A and later are good |
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| 88 | */ |
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| 89 | if (boot_cpu_data.x86 == 0x0F && |
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| 90 | boot_cpu_data.x86_vendor == X86_VENDOR_AMD && |
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| 91 | boot_cpu_data.x86_model <= 0x05 && |
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| 92 | boot_cpu_data.x86_mask < 0x0A) |
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| 93 | return 1; |
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| 94 | else if (amd_e400_c1e_detected) |
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| 95 | return 1; |
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| 96 | else |
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| 97 | return max_cstate; |
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| 98 | } |
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| 99 | |||
| 100 | static inline bool arch_has_acpi_pdc(void) |
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| 101 | { |
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| 102 | struct cpuinfo_x86 *c = &cpu_data(0); |
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| 103 | return (c->x86_vendor == X86_VENDOR_INTEL || |
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| 104 | c->x86_vendor == X86_VENDOR_CENTAUR); |
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| 105 | } |
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| 106 | |||
| 107 | static inline void arch_acpi_set_pdc_bits(u32 *buf) |
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| 108 | { |
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| 109 | struct cpuinfo_x86 *c = &cpu_data(0); |
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| 110 | |||
| 111 | buf[2] |= ACPI_PDC_C_CAPABILITY_SMP; |
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| 112 | |||
| 113 | if (cpu_has(c, X86_FEATURE_EST)) |
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| 114 | buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP; |
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| 115 | |||
| 116 | if (cpu_has(c, X86_FEATURE_ACPI)) |
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| 117 | buf[2] |= ACPI_PDC_T_FFH; |
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| 118 | |||
| 119 | /* |
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| 120 | * If mwait/monitor is unsupported, C2/C3_FFH will be disabled |
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| 121 | */ |
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| 122 | if (!cpu_has(c, X86_FEATURE_MWAIT)) |
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| 123 | buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); |
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| 124 | } |
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| 125 | |||
| 126 | static inline bool acpi_has_cpu_in_madt(void) |
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| 127 | { |
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| 128 | return !!acpi_lapic; |
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| 129 | } |
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| 130 | |||
| 131 | #else /* !CONFIG_ACPI */ |
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| 132 | |||
| 133 | #define acpi_lapic 0 |
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| 134 | #define acpi_ioapic 0 |
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| 135 | #define acpi_disable_cmcff 0 |
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| 136 | static inline void acpi_noirq_set(void) { } |
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| 137 | static inline void acpi_disable_pci(void) { } |
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| 138 | static inline void disable_acpi(void) { } |
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| 139 | |||
| 140 | #endif /* !CONFIG_ACPI */ |
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| 141 | |||
| 142 | #define ARCH_HAS_POWER_INIT 1 |
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| 143 | |||
| 144 | #ifdef CONFIG_ACPI_NUMA |
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| 145 | extern int acpi_numa; |
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| 146 | extern int x86_acpi_numa_init(void); |
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| 147 | #endif /* CONFIG_ACPI_NUMA */ |
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| 148 | |||
| 149 | #define acpi_unlazy_tlb(x) leave_mm(x) |
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| 150 | |||
| 151 | #ifdef CONFIG_ACPI_APEI |
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| 152 | static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr) |
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| 153 | { |
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| 154 | /* |
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| 155 | * We currently have no way to look up the EFI memory map |
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| 156 | * attributes for a region in a consistent way, because the |
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| 157 | * memmap is discarded after efi_free_boot_services(). So if |
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| 158 | * you call efi_mem_attributes() during boot and at runtime, |
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| 159 | * you could theoretically see different attributes. |
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| 160 | * |
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| 161 | * Since we are yet to see any x86 platforms that require |
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| 162 | * anything other than PAGE_KERNEL (some arm64 platforms |
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| 163 | * require the equivalent of PAGE_KERNEL_NOCACHE), return that |
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| 164 | * until we know differently. |
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| 165 | */ |
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| 166 | return PAGE_KERNEL; |
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| 167 | } |
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| 168 | #endif |
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| 169 | |||
| 170 | #endif /* _ASM_X86_ACPI_H */ |