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/arch/x86/include/asm/acpi.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 199 lines | 116 code | 35 blank | 48 comment | 10 complexity | da36c93ed9ed373485a4f1d73eea2435 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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/processor.h>
 30#include <asm/mmu.h>
 31#include <asm/mpspec.h>
 32
 33#define COMPILER_DEPENDENT_INT64   long long
 34#define COMPILER_DEPENDENT_UINT64  unsigned long long
 35
 36/*
 37 * Calling conventions:
 38 *
 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
 43 */
 44#define ACPI_SYSTEM_XFACE
 45#define ACPI_EXTERNAL_XFACE
 46#define ACPI_INTERNAL_XFACE
 47#define ACPI_INTERNAL_VAR_XFACE
 48
 49/* Asm macros */
 50
 51#define ACPI_ASM_MACROS
 52#define BREAKPOINT3
 53#define ACPI_DISABLE_IRQS() local_irq_disable()
 54#define ACPI_ENABLE_IRQS()  local_irq_enable()
 55#define ACPI_FLUSH_CPU_CACHE()	wbinvd()
 56
 57int __acpi_acquire_global_lock(unsigned int *lock);
 58int __acpi_release_global_lock(unsigned int *lock);
 59
 60#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
 61	((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
 62
 63#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
 64	((Acq) = __acpi_release_global_lock(&facs->global_lock))
 65
 66/*
 67 * Math helper asm macros
 68 */
 69#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
 70	asm("divl %2;"				     \
 71	    : "=a"(q32), "=d"(r32)		     \
 72	    : "r"(d32),				     \
 73	     "0"(n_lo), "1"(n_hi))
 74
 75
 76#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
 77	asm("shrl   $1,%2	;"	\
 78	    "rcrl   $1,%3;"		\
 79	    : "=r"(n_hi), "=r"(n_lo)	\
 80	    : "0"(n_hi), "1"(n_lo))
 81
 82#ifdef CONFIG_ACPI
 83extern int acpi_lapic;
 84extern int acpi_ioapic;
 85extern int acpi_noirq;
 86extern int acpi_strict;
 87extern int acpi_disabled;
 88extern int acpi_pci_disabled;
 89extern int acpi_skip_timer_override;
 90extern int acpi_use_timer_override;
 91
 92extern u8 acpi_sci_flags;
 93extern int acpi_sci_override_gsi;
 94void acpi_pic_sci_set_trigger(unsigned int, u16);
 95
 96static inline void disable_acpi(void)
 97{
 98	acpi_disabled = 1;
 99	acpi_pci_disabled = 1;
100	acpi_noirq = 1;
101}
102
103extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
104
105static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
106static inline void acpi_disable_pci(void)
107{
108	acpi_pci_disabled = 1;
109	acpi_noirq_set();
110}
111
112/* routines for saving/restoring kernel state */
113extern int acpi_save_state_mem(void);
114extern void acpi_restore_state_mem(void);
115
116extern unsigned long acpi_wakeup_address;
117
118/* early initialization routine */
119extern void acpi_reserve_wakeup_memory(void);
120
121/*
122 * Check if the CPU can handle C2 and deeper
123 */
124static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
125{
126	/*
127	 * Early models (<=5) of AMD Opterons are not supposed to go into
128	 * C2 state.
129	 *
130	 * Steppings 0x0A and later are good
131	 */
132	if (boot_cpu_data.x86 == 0x0F &&
133	    boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
134	    boot_cpu_data.x86_model <= 0x05 &&
135	    boot_cpu_data.x86_mask < 0x0A)
136		return 1;
137	else if (boot_cpu_has(X86_FEATURE_AMDC1E))
138		return 1;
139	else
140		return max_cstate;
141}
142
143static inline bool arch_has_acpi_pdc(void)
144{
145	struct cpuinfo_x86 *c = &cpu_data(0);
146	return (c->x86_vendor == X86_VENDOR_INTEL ||
147		c->x86_vendor == X86_VENDOR_CENTAUR);
148}
149
150static inline void arch_acpi_set_pdc_bits(u32 *buf)
151{
152	struct cpuinfo_x86 *c = &cpu_data(0);
153
154	buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
155
156	if (cpu_has(c, X86_FEATURE_EST))
157		buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
158
159	if (cpu_has(c, X86_FEATURE_ACPI))
160		buf[2] |= ACPI_PDC_T_FFH;
161
162	/*
163	 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
164	 */
165	if (!cpu_has(c, X86_FEATURE_MWAIT))
166		buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
167}
168
169#else /* !CONFIG_ACPI */
170
171#define acpi_lapic 0
172#define acpi_ioapic 0
173static inline void acpi_noirq_set(void) { }
174static inline void acpi_disable_pci(void) { }
175static inline void disable_acpi(void) { }
176
177#endif /* !CONFIG_ACPI */
178
179#define ARCH_HAS_POWER_INIT	1
180
181struct bootnode;
182
183#ifdef CONFIG_ACPI_NUMA
184extern int acpi_numa;
185extern int acpi_get_nodes(struct bootnode *physnodes);
186extern int acpi_scan_nodes(unsigned long start, unsigned long end);
187#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
188extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
189				   int num_nodes);
190#else
191static inline void acpi_fake_nodes(const struct bootnode *fake_nodes,
192				   int num_nodes)
193{
194}
195#endif
196
197#define acpi_unlazy_tlb(x)	leave_mm(x)
198
199#endif /* _ASM_X86_ACPI_H */