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/processor.h>
31 #include <asm/mpspec.h>
32 #include <asm/realmode.h>
34 #define COMPILER_DEPENDENT_INT64 long long
35 #define COMPILER_DEPENDENT_UINT64 unsigned long long
38 * Calling conventions:
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
45 #define ACPI_SYSTEM_XFACE
46 #define ACPI_EXTERNAL_XFACE
47 #define ACPI_INTERNAL_XFACE
48 #define ACPI_INTERNAL_VAR_XFACE
52 #define ACPI_FLUSH_CPU_CACHE() wbinvd()
54 int __acpi_acquire_global_lock(unsigned int *lock);
55 int __acpi_release_global_lock(unsigned int *lock);
57 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
58 ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
60 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
61 ((Acq) = __acpi_release_global_lock(&facs->global_lock))
64 * Math helper asm macros
66 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
68 : "=a"(q32), "=d"(r32) \
73 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
76 : "=r"(n_hi), "=r"(n_lo) \
77 : "0"(n_hi), "1"(n_lo))
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;
90 extern u8 acpi_sci_flags;
91 extern int acpi_sci_override_gsi;
92 void acpi_pic_sci_set_trigger(unsigned int, u16);
94 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
95 int trigger, int polarity);
97 static inline void disable_acpi(void)
100 acpi_pci_disabled = 1;
104 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
106 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
107 static inline void acpi_disable_pci(void)
109 acpi_pci_disabled = 1;
113 /* Low-level suspend routine. */
114 extern int (*acpi_suspend_lowlevel)(void);
116 /* Physical address to resume after wakeup */
117 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
120 * Check if the CPU can handle C2 and deeper
122 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
125 * Early models (<=5) of AMD Opterons are not supposed to go into
128 * Steppings 0x0A and later are good
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)
135 else if (amd_e400_c1e_detected)
141 static inline bool arch_has_acpi_pdc(void)
143 struct cpuinfo_x86 *c = &cpu_data(0);
144 return (c->x86_vendor == X86_VENDOR_INTEL ||
145 c->x86_vendor == X86_VENDOR_CENTAUR);
148 static inline void arch_acpi_set_pdc_bits(u32 *buf)
150 struct cpuinfo_x86 *c = &cpu_data(0);
152 buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
154 if (cpu_has(c, X86_FEATURE_EST))
155 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
157 if (cpu_has(c, X86_FEATURE_ACPI))
158 buf[2] |= ACPI_PDC_T_FFH;
161 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
163 if (!cpu_has(c, X86_FEATURE_MWAIT))
164 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
167 #else /* !CONFIG_ACPI */
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) { }
175 #endif /* !CONFIG_ACPI */
177 #define ARCH_HAS_POWER_INIT 1
179 #ifdef CONFIG_ACPI_NUMA
180 extern int acpi_numa;
181 extern int x86_acpi_numa_init(void);
182 #endif /* CONFIG_ACPI_NUMA */
184 #define acpi_unlazy_tlb(x) leave_mm(x)
186 #endif /* _ASM_X86_ACPI_H */