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
36extern int acpi_lapic;
37extern int acpi_ioapic;
38extern int acpi_noirq;
39extern int acpi_strict;
40extern int acpi_disabled;
41extern int acpi_pci_disabled;
42extern int acpi_skip_timer_override;
43extern int acpi_use_timer_override;
44extern int acpi_fix_pin2_polarity;
45extern int acpi_disable_cmcff;
46
47extern u8 acpi_sci_flags;
48extern int acpi_sci_override_gsi;
49void acpi_pic_sci_set_trigger(unsigned int, u16);
50
51extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
52				  int trigger, int polarity);
53extern void (*__acpi_unregister_gsi)(u32 gsi);
54
55static inline void disable_acpi(void)
56{
57	acpi_disabled = 1;
58	acpi_pci_disabled = 1;
59	acpi_noirq = 1;
60}
61
62extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
63
64static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
65static inline void acpi_disable_pci(void)
66{
67	acpi_pci_disabled = 1;
68	acpi_noirq_set();
69}
70
71/* Low-level suspend routine. */
72extern 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 */
80static 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
99static 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
106static 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
125static 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
135static inline void acpi_noirq_set(void) { }
136static inline void acpi_disable_pci(void) { }
137static inline void disable_acpi(void) { }
138
139#endif /* !CONFIG_ACPI */
140
141#define ARCH_HAS_POWER_INIT	1
142
143#ifdef CONFIG_ACPI_NUMA
144extern int acpi_numa;
145extern 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