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/trampoline.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_ASM_MACROS 53 #define BREAKPOINT3 54 #define ACPI_DISABLE_IRQS() local_irq_disable() 55 #define ACPI_ENABLE_IRQS() local_irq_enable() 56 #define ACPI_FLUSH_CPU_CACHE() wbinvd() 57 58 int __acpi_acquire_global_lock(unsigned int *lock); 59 int __acpi_release_global_lock(unsigned int *lock); 60 61 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \ 62 ((Acq) = __acpi_acquire_global_lock(&facs->global_lock)) 63 64 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \ 65 ((Acq) = __acpi_release_global_lock(&facs->global_lock)) 66 67 /* 68 * Math helper asm macros 69 */ 70 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \ 71 asm("divl %2;" \ 72 : "=a"(q32), "=d"(r32) \ 73 : "r"(d32), \ 74 "0"(n_lo), "1"(n_hi)) 75 76 77 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \ 78 asm("shrl $1,%2 ;" \ 79 "rcrl $1,%3;" \ 80 : "=r"(n_hi), "=r"(n_lo) \ 81 : "0"(n_hi), "1"(n_lo)) 82 83 #ifdef CONFIG_ACPI 84 extern int acpi_lapic; 85 extern int acpi_ioapic; 86 extern int acpi_noirq; 87 extern int acpi_strict; 88 extern int acpi_disabled; 89 extern int acpi_pci_disabled; 90 extern int acpi_skip_timer_override; 91 extern int acpi_use_timer_override; 92 extern int acpi_fix_pin2_polarity; 93 94 extern u8 acpi_sci_flags; 95 extern int acpi_sci_override_gsi; 96 void acpi_pic_sci_set_trigger(unsigned int, u16); 97 98 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi, 99 int trigger, int polarity); 100 101 static inline void disable_acpi(void) 102 { 103 acpi_disabled = 1; 104 acpi_pci_disabled = 1; 105 acpi_noirq = 1; 106 } 107 108 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq); 109 110 static inline void acpi_noirq_set(void) { acpi_noirq = 1; } 111 static inline void acpi_disable_pci(void) 112 { 113 acpi_pci_disabled = 1; 114 acpi_noirq_set(); 115 } 116 117 /* routines for saving/restoring kernel state */ 118 extern int acpi_save_state_mem(void); 119 extern void acpi_restore_state_mem(void); 120 121 extern const unsigned char acpi_wakeup_code[]; 122 #define acpi_wakeup_address (__pa(TRAMPOLINE_SYM(acpi_wakeup_code))) 123 124 /* early initialization routine */ 125 extern void acpi_reserve_wakeup_memory(void); 126 127 /* 128 * Check if the CPU can handle C2 and deeper 129 */ 130 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate) 131 { 132 /* 133 * Early models (<=5) of AMD Opterons are not supposed to go into 134 * C2 state. 135 * 136 * Steppings 0x0A and later are good 137 */ 138 if (boot_cpu_data.x86 == 0x0F && 139 boot_cpu_data.x86_vendor == X86_VENDOR_AMD && 140 boot_cpu_data.x86_model <= 0x05 && 141 boot_cpu_data.x86_mask < 0x0A) 142 return 1; 143 else if (c1e_detected) 144 return 1; 145 else 146 return max_cstate; 147 } 148 149 static inline bool arch_has_acpi_pdc(void) 150 { 151 struct cpuinfo_x86 *c = &cpu_data(0); 152 return (c->x86_vendor == X86_VENDOR_INTEL || 153 c->x86_vendor == X86_VENDOR_CENTAUR); 154 } 155 156 static inline void arch_acpi_set_pdc_bits(u32 *buf) 157 { 158 struct cpuinfo_x86 *c = &cpu_data(0); 159 160 buf[2] |= ACPI_PDC_C_CAPABILITY_SMP; 161 162 if (cpu_has(c, X86_FEATURE_EST)) 163 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP; 164 165 if (cpu_has(c, X86_FEATURE_ACPI)) 166 buf[2] |= ACPI_PDC_T_FFH; 167 168 /* 169 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled 170 */ 171 if (!cpu_has(c, X86_FEATURE_MWAIT)) 172 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); 173 } 174 175 #else /* !CONFIG_ACPI */ 176 177 #define acpi_lapic 0 178 #define acpi_ioapic 0 179 static inline void acpi_noirq_set(void) { } 180 static inline void acpi_disable_pci(void) { } 181 static inline void disable_acpi(void) { } 182 183 #endif /* !CONFIG_ACPI */ 184 185 #define ARCH_HAS_POWER_INIT 1 186 187 struct bootnode; 188 189 #ifdef CONFIG_ACPI_NUMA 190 extern int acpi_numa; 191 extern int x86_acpi_numa_init(void); 192 #endif /* CONFIG_ACPI_NUMA */ 193 194 #define acpi_unlazy_tlb(x) leave_mm(x) 195 196 #endif /* _ASM_X86_ACPI_H */ 197