Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
acpi.h
Go to the documentation of this file.
1 #ifndef _ASM_X86_ACPI_H
2 #define _ASM_X86_ACPI_H
3 
4 /*
5  * Copyright (C) 2001 Paul Diefenbaugh <[email protected]>
6  * Copyright (C) 2001 Patrick Mochel <[email protected]>
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/realmode.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 /* Low-level suspend routine. */
118 extern int acpi_suspend_lowlevel(void);
119 
120 /* Physical address to resume after wakeup */
121 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
122 
123 /*
124  * Check if the CPU can handle C2 and deeper
125  */
126 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
127 {
128  /*
129  * Early models (<=5) of AMD Opterons are not supposed to go into
130  * C2 state.
131  *
132  * Steppings 0x0A and later are good
133  */
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)
138  return 1;
139  else if (amd_e400_c1e_detected)
140  return 1;
141  else
142  return max_cstate;
143 }
144 
145 static inline bool arch_has_acpi_pdc(void)
146 {
147  struct cpuinfo_x86 *c = &cpu_data(0);
148  return (c->x86_vendor == X86_VENDOR_INTEL ||
150 }
151 
152 static inline void arch_acpi_set_pdc_bits(u32 *buf)
153 {
154  struct cpuinfo_x86 *c = &cpu_data(0);
155 
156  buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
157 
158  if (cpu_has(c, X86_FEATURE_EST))
160 
161  if (cpu_has(c, X86_FEATURE_ACPI))
162  buf[2] |= ACPI_PDC_T_FFH;
163 
164  /*
165  * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
166  */
167  if (!cpu_has(c, X86_FEATURE_MWAIT))
168  buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
169 }
170 
171 #else /* !CONFIG_ACPI */
172 
173 #define acpi_lapic 0
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) { }
178 
179 #endif /* !CONFIG_ACPI */
180 
181 #define ARCH_HAS_POWER_INIT 1
182 
183 #ifdef CONFIG_ACPI_NUMA
184 extern int acpi_numa;
185 extern int x86_acpi_numa_init(void);
186 #endif /* CONFIG_ACPI_NUMA */
187 
188 #define acpi_unlazy_tlb(x) leave_mm(x)
189 
190 #endif /* _ASM_X86_ACPI_H */