1 #ifndef _ASM_X86_ACPI_H
2 #define _ASM_X86_ACPI_H
3
4 /*
5 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6 * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
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/fixmap.h>
30 #include <asm/processor.h>
31 #include <asm/mmu.h>
32 #include <asm/mpspec.h>
33 #include <asm/realmode.h>
34
35 #ifdef CONFIG_ACPI
36 extern int acpi_lapic;
37 extern int acpi_ioapic;
38 extern int acpi_noirq;
39 extern int acpi_strict;
40 extern int acpi_disabled;
41 extern int acpi_pci_disabled;
42 extern int acpi_skip_timer_override;
43 extern int acpi_use_timer_override;
44 extern int acpi_fix_pin2_polarity;
45 extern int acpi_disable_cmcff;
46
47 extern u8 acpi_sci_flags;
48 extern int acpi_sci_override_gsi;
49 void acpi_pic_sci_set_trigger(unsigned int, u16);
50
51 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
52 int trigger, int polarity);
53 extern void (*__acpi_unregister_gsi)(u32 gsi);
54
disable_acpi(void)55 static inline void disable_acpi(void)
56 {
57 acpi_disabled = 1;
58 acpi_pci_disabled = 1;
59 acpi_noirq = 1;
60 }
61
62 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
63
acpi_noirq_set(void)64 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
acpi_disable_pci(void)65 static inline void acpi_disable_pci(void)
66 {
67 acpi_pci_disabled = 1;
68 acpi_noirq_set();
69 }
70
71 /* Low-level suspend routine. */
72 extern int (*acpi_suspend_lowlevel)(void);
73
74 /* Physical address to resume after wakeup */
75 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
76
77 /*
78 * Check if the CPU can handle C2 and deeper
79 */
acpi_processor_cstate_check(unsigned int max_cstate)80 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
81 {
82 /*
83 * Early models (<=5) of AMD Opterons are not supposed to go into
84 * C2 state.
85 *
86 * Steppings 0x0A and later are good
87 */
88 if (boot_cpu_data.x86 == 0x0F &&
89 boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
90 boot_cpu_data.x86_model <= 0x05 &&
91 boot_cpu_data.x86_mask < 0x0A)
92 return 1;
93 else if (amd_e400_c1e_detected)
94 return 1;
95 else
96 return max_cstate;
97 }
98
arch_has_acpi_pdc(void)99 static inline bool arch_has_acpi_pdc(void)
100 {
101 struct cpuinfo_x86 *c = &cpu_data(0);
102 return (c->x86_vendor == X86_VENDOR_INTEL ||
103 c->x86_vendor == X86_VENDOR_CENTAUR);
104 }
105
arch_acpi_set_pdc_bits(u32 * buf)106 static inline void arch_acpi_set_pdc_bits(u32 *buf)
107 {
108 struct cpuinfo_x86 *c = &cpu_data(0);
109
110 buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
111
112 if (cpu_has(c, X86_FEATURE_EST))
113 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
114
115 if (cpu_has(c, X86_FEATURE_ACPI))
116 buf[2] |= ACPI_PDC_T_FFH;
117
118 /*
119 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
120 */
121 if (!cpu_has(c, X86_FEATURE_MWAIT))
122 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
123 }
124
acpi_has_cpu_in_madt(void)125 static inline bool acpi_has_cpu_in_madt(void)
126 {
127 return !!acpi_lapic;
128 }
129
130 #else /* !CONFIG_ACPI */
131
132 #define acpi_lapic 0
133 #define acpi_ioapic 0
134 #define acpi_disable_cmcff 0
acpi_noirq_set(void)135 static inline void acpi_noirq_set(void) { }
acpi_disable_pci(void)136 static inline void acpi_disable_pci(void) { }
disable_acpi(void)137 static inline void disable_acpi(void) { }
138
139 #endif /* !CONFIG_ACPI */
140
141 #define ARCH_HAS_POWER_INIT 1
142
143 #ifdef CONFIG_ACPI_NUMA
144 extern int acpi_numa;
145 extern int x86_acpi_numa_init(void);
146 #endif /* CONFIG_ACPI_NUMA */
147
148 #define acpi_unlazy_tlb(x) leave_mm(x)
149
150 #endif /* _ASM_X86_ACPI_H */
151