1 #ifndef _ASM_X86_ACPI_H
2 #define _ASM_X86_ACPI_H
5 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6 * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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
24 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #include <acpi/pdc_intel.h>
29 #include <asm/fixmap.h>
30 #include <asm/processor.h>
32 #include <asm/mpspec.h>
33 #include <asm/realmode.h>
35 #define COMPILER_DEPENDENT_INT64 long long
36 #define COMPILER_DEPENDENT_UINT64 unsigned long long
39 * Calling conventions:
41 * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
42 * ACPI_EXTERNAL_XFACE - External ACPI interfaces
43 * ACPI_INTERNAL_XFACE - Internal ACPI interfaces
44 * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
46 #define ACPI_SYSTEM_XFACE
47 #define ACPI_EXTERNAL_XFACE
48 #define ACPI_INTERNAL_XFACE
49 #define ACPI_INTERNAL_VAR_XFACE
53 #define ACPI_FLUSH_CPU_CACHE() wbinvd()
55 int __acpi_acquire_global_lock(unsigned int *lock);
56 int __acpi_release_global_lock(unsigned int *lock);
58 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
59 ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
61 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
62 ((Acq) = __acpi_release_global_lock(&facs->global_lock))
65 * Math helper asm macros
67 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
69 : "=a"(q32), "=d"(r32) \
74 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
77 : "=r"(n_hi), "=r"(n_lo) \
78 : "0"(n_hi), "1"(n_lo))
81 extern int acpi_lapic;
82 extern int acpi_ioapic;
83 extern int acpi_noirq;
84 extern int acpi_strict;
85 extern int acpi_disabled;
86 extern int acpi_pci_disabled;
87 extern int acpi_skip_timer_override;
88 extern int acpi_use_timer_override;
89 extern int acpi_fix_pin2_polarity;
90 extern int acpi_disable_cmcff;
92 extern u8 acpi_sci_flags;
93 extern int acpi_sci_override_gsi;
94 void acpi_pic_sci_set_trigger(unsigned int, u16);
96 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
97 int trigger, int polarity);
99 static inline void disable_acpi(void)
102 acpi_pci_disabled = 1;
106 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
108 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
109 static inline void acpi_disable_pci(void)
111 acpi_pci_disabled = 1;
115 /* Low-level suspend routine. */
116 extern int (*acpi_suspend_lowlevel)(void);
118 /* Physical address to resume after wakeup */
119 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
122 * Check if the CPU can handle C2 and deeper
124 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
127 * Early models (<=5) of AMD Opterons are not supposed to go into
130 * Steppings 0x0A and later are good
132 if (boot_cpu_data.x86 == 0x0F &&
133 boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
134 boot_cpu_data.x86_model <= 0x05 &&
135 boot_cpu_data.x86_mask < 0x0A)
137 else if (amd_e400_c1e_detected)
143 static inline bool arch_has_acpi_pdc(void)
145 struct cpuinfo_x86 *c = &cpu_data(0);
146 return (c->x86_vendor == X86_VENDOR_INTEL ||
147 c->x86_vendor == X86_VENDOR_CENTAUR);
150 static inline void arch_acpi_set_pdc_bits(u32 *buf)
152 struct cpuinfo_x86 *c = &cpu_data(0);
154 buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
156 if (cpu_has(c, X86_FEATURE_EST))
157 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
159 if (cpu_has(c, X86_FEATURE_ACPI))
160 buf[2] |= ACPI_PDC_T_FFH;
163 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
165 if (!cpu_has(c, X86_FEATURE_MWAIT))
166 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
169 #else /* !CONFIG_ACPI */
172 #define acpi_ioapic 0
173 #define acpi_disable_cmcff 0
174 static inline void acpi_noirq_set(void) { }
175 static inline void acpi_disable_pci(void) { }
176 static inline void disable_acpi(void) { }
178 #endif /* !CONFIG_ACPI */
180 #define ARCH_HAS_POWER_INIT 1
182 #ifdef CONFIG_ACPI_NUMA
183 extern int acpi_numa;
184 extern int x86_acpi_numa_init(void);
185 #endif /* CONFIG_ACPI_NUMA */
187 #define acpi_unlazy_tlb(x) leave_mm(x)
189 #endif /* _ASM_X86_ACPI_H */