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>
33 #define COMPILER_DEPENDENT_INT64 long long
34 #define COMPILER_DEPENDENT_UINT64 unsigned long long
37 * Calling conventions:
39 * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
40 * ACPI_EXTERNAL_XFACE - External ACPI interfaces
41 * ACPI_INTERNAL_XFACE - Internal ACPI interfaces
42 * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
44 #define ACPI_SYSTEM_XFACE
45 #define ACPI_EXTERNAL_XFACE
46 #define ACPI_INTERNAL_XFACE
47 #define ACPI_INTERNAL_VAR_XFACE
51 #define ACPI_ASM_MACROS
53 #define ACPI_DISABLE_IRQS() local_irq_disable()
54 #define ACPI_ENABLE_IRQS() local_irq_enable()
55 #define ACPI_FLUSH_CPU_CACHE() wbinvd()
57 int __acpi_acquire_global_lock(unsigned int *lock
);
58 int __acpi_release_global_lock(unsigned int *lock
);
60 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
61 ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
63 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
64 ((Acq) = __acpi_release_global_lock(&facs->global_lock))
67 * Math helper asm macros
69 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
71 : "=a"(q32), "=d"(r32) \
76 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
79 : "=r"(n_hi), "=r"(n_lo) \
80 : "0"(n_hi), "1"(n_lo))
83 extern int acpi_lapic
;
84 extern int acpi_ioapic
;
85 extern int acpi_noirq
;
86 extern int acpi_strict
;
87 extern int acpi_disabled
;
89 extern int acpi_pci_disabled
;
90 extern int acpi_skip_timer_override
;
91 extern int acpi_use_timer_override
;
93 extern u8 acpi_sci_flags
;
94 extern int acpi_sci_override_gsi
;
95 void acpi_pic_sci_set_trigger(unsigned int, u16
);
97 static inline void disable_acpi(void)
101 acpi_pci_disabled
= 1;
105 extern int acpi_gsi_to_irq(u32 gsi
, unsigned int *irq
);
107 static inline void acpi_noirq_set(void) { acpi_noirq
= 1; }
108 static inline void acpi_disable_pci(void)
110 acpi_pci_disabled
= 1;
114 /* routines for saving/restoring kernel state */
115 extern int acpi_save_state_mem(void);
116 extern void acpi_restore_state_mem(void);
118 extern unsigned long acpi_wakeup_address
;
120 /* early initialization routine */
121 extern void acpi_reserve_wakeup_memory(void);
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 (boot_cpu_has(X86_FEATURE_AMDC1E
))
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
185 #ifdef CONFIG_ACPI_NUMA
186 extern int acpi_numa
;
187 extern int acpi_get_nodes(struct bootnode
*physnodes
);
188 extern int acpi_scan_nodes(unsigned long start
, unsigned long end
);
189 #define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
190 extern void acpi_fake_nodes(const struct bootnode
*fake_nodes
,
193 static inline void acpi_fake_nodes(const struct bootnode
*fake_nodes
,
199 #define acpi_unlazy_tlb(x) leave_mm(x)
201 #endif /* _ASM_X86_ACPI_H */