1 #ifndef _ASM_X86_ACPI_H 2 #define _ASM_X86_ACPI_H 3 4 /* 5 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> 6 * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org> 7 * 8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 25 */ 26 #include <acpi/pdc_intel.h> 27 28 #include <asm/numa.h> 29 #include <asm/fixmap.h> 30 #include <asm/processor.h> 31 #include <asm/mmu.h> 32 #include <asm/mpspec.h> 33 #include <asm/realmode.h> 34 35 #ifdef CONFIG_ACPI 36 extern int acpi_lapic; 37 extern int acpi_ioapic; 38 extern int acpi_noirq; 39 extern int acpi_strict; 40 extern int acpi_disabled; 41 extern int acpi_pci_disabled; 42 extern int acpi_skip_timer_override; 43 extern int acpi_use_timer_override; 44 extern int acpi_fix_pin2_polarity; 45 extern int acpi_disable_cmcff; 46 47 extern u8 acpi_sci_flags; 48 extern int acpi_sci_override_gsi; 49 void acpi_pic_sci_set_trigger(unsigned int, u16); 50 51 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi, 52 int trigger, int polarity); 53 extern void (*__acpi_unregister_gsi)(u32 gsi); 54 55 static inline void disable_acpi(void) 56 { 57 acpi_disabled = 1; 58 acpi_pci_disabled = 1; 59 acpi_noirq = 1; 60 } 61 62 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq); 63 64 static inline void acpi_noirq_set(void) { acpi_noirq = 1; } 65 static inline void acpi_disable_pci(void) 66 { 67 acpi_pci_disabled = 1; 68 acpi_noirq_set(); 69 } 70 71 /* Low-level suspend routine. */ 72 extern int (*acpi_suspend_lowlevel)(void); 73 74 /* Physical address to resume after wakeup */ 75 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start)) 76 77 /* 78 * Check if the CPU can handle C2 and deeper 79 */ 80 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate) 81 { 82 /* 83 * Early models (<=5) of AMD Opterons are not supposed to go into 84 * C2 state. 85 * 86 * Steppings 0x0A and later are good 87 */ 88 if (boot_cpu_data.x86 == 0x0F && 89 boot_cpu_data.x86_vendor == X86_VENDOR_AMD && 90 boot_cpu_data.x86_model <= 0x05 && 91 boot_cpu_data.x86_mask < 0x0A) 92 return 1; 93 else if (amd_e400_c1e_detected) 94 return 1; 95 else 96 return max_cstate; 97 } 98 99 static inline bool arch_has_acpi_pdc(void) 100 { 101 struct cpuinfo_x86 *c = &cpu_data(0); 102 return (c->x86_vendor == X86_VENDOR_INTEL || 103 c->x86_vendor == X86_VENDOR_CENTAUR); 104 } 105 106 static inline void arch_acpi_set_pdc_bits(u32 *buf) 107 { 108 struct cpuinfo_x86 *c = &cpu_data(0); 109 110 buf[2] |= ACPI_PDC_C_CAPABILITY_SMP; 111 112 if (cpu_has(c, X86_FEATURE_EST)) 113 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP; 114 115 if (cpu_has(c, X86_FEATURE_ACPI)) 116 buf[2] |= ACPI_PDC_T_FFH; 117 118 /* 119 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled 120 */ 121 if (!cpu_has(c, X86_FEATURE_MWAIT)) 122 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); 123 } 124 125 static inline bool acpi_has_cpu_in_madt(void) 126 { 127 return !!acpi_lapic; 128 } 129 130 #else /* !CONFIG_ACPI */ 131 132 #define acpi_lapic 0 133 #define acpi_ioapic 0 134 #define acpi_disable_cmcff 0 135 static inline void acpi_noirq_set(void) { } 136 static inline void acpi_disable_pci(void) { } 137 static inline void disable_acpi(void) { } 138 139 #endif /* !CONFIG_ACPI */ 140 141 #define ARCH_HAS_POWER_INIT 1 142 143 #ifdef CONFIG_ACPI_NUMA 144 extern int acpi_numa; 145 extern int x86_acpi_numa_init(void); 146 #endif /* CONFIG_ACPI_NUMA */ 147 148 #define acpi_unlazy_tlb(x) leave_mm(x) 149 150 #endif /* _ASM_X86_ACPI_H */ 151