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_ASM_MACROS
54 #define ACPI_DISABLE_IRQS() local_irq_disable()
55 #define ACPI_ENABLE_IRQS() local_irq_enable()
56 #define ACPI_FLUSH_CPU_CACHE() wbinvd()
58 int __acpi_acquire_global_lock(unsigned int *lock);
59 int __acpi_release_global_lock(unsigned int *lock);
61 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
62 ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
64 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
65 ((Acq) = __acpi_release_global_lock(&facs->global_lock))
68 * Math helper asm macros
70 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
72 : "=a"(q32), "=d"(r32) \
77 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
80 : "=r"(n_hi), "=r"(n_lo) \
81 : "0"(n_hi), "1"(n_lo))
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;
94 extern u8 acpi_sci_flags;
95 extern int acpi_sci_override_gsi;
96 void acpi_pic_sci_set_trigger(unsigned int, u16);
98 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
99 int trigger, int polarity);
101 static inline void disable_acpi(void)
104 acpi_pci_disabled = 1;
108 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
110 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
111 static inline void acpi_disable_pci(void)
113 acpi_pci_disabled = 1;
117 /* Low-level suspend routine. */
118 extern int acpi_suspend_lowlevel(void);
120 /* Physical address to resume after wakeup */
121 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
124 * Check if the CPU can handle C2 and deeper
126 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
129 * Early models (<=5) of AMD Opterons are not supposed to go into
132 * Steppings 0x0A and later are good
134 if (boot_cpu_data.x86 == 0x0F &&
135 boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
136 boot_cpu_data.x86_model <= 0x05 &&
137 boot_cpu_data.x86_mask < 0x0A)
139 else if (amd_e400_c1e_detected)
145 static inline bool arch_has_acpi_pdc(void)
147 struct cpuinfo_x86 *c = &cpu_data(0);
148 return (c->x86_vendor == X86_VENDOR_INTEL ||
149 c->x86_vendor == X86_VENDOR_CENTAUR);
152 static inline void arch_acpi_set_pdc_bits(u32 *buf)
154 struct cpuinfo_x86 *c = &cpu_data(0);
156 buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
158 if (cpu_has(c, X86_FEATURE_EST))
159 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
161 if (cpu_has(c, X86_FEATURE_ACPI))
162 buf[2] |= ACPI_PDC_T_FFH;
165 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
167 if (!cpu_has(c, X86_FEATURE_MWAIT))
168 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
171 #else /* !CONFIG_ACPI */
174 #define acpi_ioapic 0
175 static inline void acpi_noirq_set(void) { }
176 static inline void acpi_disable_pci(void) { }
177 static inline void disable_acpi(void) { }
179 #endif /* !CONFIG_ACPI */
181 #define ARCH_HAS_POWER_INIT 1
183 #ifdef CONFIG_ACPI_NUMA
184 extern int acpi_numa;
185 extern int x86_acpi_numa_init(void);
186 #endif /* CONFIG_ACPI_NUMA */
188 #define acpi_unlazy_tlb(x) leave_mm(x)
190 #endif /* _ASM_X86_ACPI_H */