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/processor.h> 30 #include <asm/mmu.h> 31 #include <asm/mpspec.h> 32 #include <asm/realmode.h> 33 34 #define COMPILER_DEPENDENT_INT64 long long 35 #define COMPILER_DEPENDENT_UINT64 unsigned long long 36 37 /* 38 * Calling conventions: 39 * 40 * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads) 41 * ACPI_EXTERNAL_XFACE - External ACPI interfaces 42 * ACPI_INTERNAL_XFACE - Internal ACPI interfaces 43 * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces 44 */ 45 #define ACPI_SYSTEM_XFACE 46 #define ACPI_EXTERNAL_XFACE 47 #define ACPI_INTERNAL_XFACE 48 #define ACPI_INTERNAL_VAR_XFACE 49 50 /* Asm macros */ 51 52 #define ACPI_FLUSH_CPU_CACHE() wbinvd() 53 54 int __acpi_acquire_global_lock(unsigned int *lock); 55 int __acpi_release_global_lock(unsigned int *lock); 56 57 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \ 58 ((Acq) = __acpi_acquire_global_lock(&facs->global_lock)) 59 60 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \ 61 ((Acq) = __acpi_release_global_lock(&facs->global_lock)) 62 63 /* 64 * Math helper asm macros 65 */ 66 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \ 67 asm("divl %2;" \ 68 : "=a"(q32), "=d"(r32) \ 69 : "r"(d32), \ 70 "0"(n_lo), "1"(n_hi)) 71 72 73 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \ 74 asm("shrl $1,%2 ;" \ 75 "rcrl $1,%3;" \ 76 : "=r"(n_hi), "=r"(n_lo) \ 77 : "0"(n_hi), "1"(n_lo)) 78 79 #ifdef CONFIG_ACPI 80 extern int acpi_lapic; 81 extern int acpi_ioapic; 82 extern int acpi_noirq; 83 extern int acpi_strict; 84 extern int acpi_disabled; 85 extern int acpi_pci_disabled; 86 extern int acpi_skip_timer_override; 87 extern int acpi_use_timer_override; 88 extern int acpi_fix_pin2_polarity; 89 90 extern u8 acpi_sci_flags; 91 extern int acpi_sci_override_gsi; 92 void acpi_pic_sci_set_trigger(unsigned int, u16); 93 94 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi, 95 int trigger, int polarity); 96 97 static inline void disable_acpi(void) 98 { 99 acpi_disabled = 1; 100 acpi_pci_disabled = 1; 101 acpi_noirq = 1; 102 } 103 104 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq); 105 106 static inline void acpi_noirq_set(void) { acpi_noirq = 1; } 107 static inline void acpi_disable_pci(void) 108 { 109 acpi_pci_disabled = 1; 110 acpi_noirq_set(); 111 } 112 113 /* Low-level suspend routine. */ 114 extern int (*acpi_suspend_lowlevel)(void); 115 116 /* Physical address to resume after wakeup */ 117 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start)) 118 119 /* 120 * Check if the CPU can handle C2 and deeper 121 */ 122 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate) 123 { 124 /* 125 * Early models (<=5) of AMD Opterons are not supposed to go into 126 * C2 state. 127 * 128 * Steppings 0x0A and later are good 129 */ 130 if (boot_cpu_data.x86 == 0x0F && 131 boot_cpu_data.x86_vendor == X86_VENDOR_AMD && 132 boot_cpu_data.x86_model <= 0x05 && 133 boot_cpu_data.x86_mask < 0x0A) 134 return 1; 135 else if (amd_e400_c1e_detected) 136 return 1; 137 else 138 return max_cstate; 139 } 140 141 static inline bool arch_has_acpi_pdc(void) 142 { 143 struct cpuinfo_x86 *c = &cpu_data(0); 144 return (c->x86_vendor == X86_VENDOR_INTEL || 145 c->x86_vendor == X86_VENDOR_CENTAUR); 146 } 147 148 static inline void arch_acpi_set_pdc_bits(u32 *buf) 149 { 150 struct cpuinfo_x86 *c = &cpu_data(0); 151 152 buf[2] |= ACPI_PDC_C_CAPABILITY_SMP; 153 154 if (cpu_has(c, X86_FEATURE_EST)) 155 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP; 156 157 if (cpu_has(c, X86_FEATURE_ACPI)) 158 buf[2] |= ACPI_PDC_T_FFH; 159 160 /* 161 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled 162 */ 163 if (!cpu_has(c, X86_FEATURE_MWAIT)) 164 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); 165 } 166 167 #else /* !CONFIG_ACPI */ 168 169 #define acpi_lapic 0 170 #define acpi_ioapic 0 171 static inline void acpi_noirq_set(void) { } 172 static inline void acpi_disable_pci(void) { } 173 static inline void disable_acpi(void) { } 174 175 #endif /* !CONFIG_ACPI */ 176 177 #define ARCH_HAS_POWER_INIT 1 178 179 #ifdef CONFIG_ACPI_NUMA 180 extern int acpi_numa; 181 extern int x86_acpi_numa_init(void); 182 #endif /* CONFIG_ACPI_NUMA */ 183 184 #define acpi_unlazy_tlb(x) leave_mm(x) 185 186 #endif /* _ASM_X86_ACPI_H */ 187