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

   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_ht;
  89extern int acpi_pci_disabled;
  90extern int acpi_skip_timer_override;
  91extern int acpi_use_timer_override;
  92
  93extern u8 acpi_sci_flags;
  94extern int acpi_sci_override_gsi;
  95void acpi_pic_sci_set_trigger(unsigned int, u16);
  96
  97static inline void disable_acpi(void)
  98{
  99        acpi_disabled = 1;
 100        acpi_ht = 0;
 101        acpi_pci_disabled = 1;
 102        acpi_noirq = 1;
 103}
 104
 105/* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
 106#define FIX_ACPI_PAGES 4
 107
 108extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
 109
 110static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
 111static inline void acpi_disable_pci(void)
 112{
 113        acpi_pci_disabled = 1;
 114        acpi_noirq_set();
 115}
 116
 117/* routines for saving/restoring kernel state */
 118extern int acpi_save_state_mem(void);
 119extern void acpi_restore_state_mem(void);
 120
 121extern unsigned long acpi_wakeup_address;
 122
 123/* early initialization routine */
 124extern void acpi_reserve_bootmem(void);
 125
 126/*
 127 * Check if the CPU can handle C2 and deeper
 128 */
 129static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
 130{
 131        /*
 132         * Early models (<=5) of AMD Opterons are not supposed to go into
 133         * C2 state.
 134         *
 135         * Steppings 0x0A and later are good
 136         */
 137        if (boot_cpu_data.x86 == 0x0F &&
 138            boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
 139            boot_cpu_data.x86_model <= 0x05 &&
 140            boot_cpu_data.x86_mask < 0x0A)
 141                return 1;
 142        else if (boot_cpu_has(X86_FEATURE_AMDC1E))
 143                return 1;
 144        else
 145                return max_cstate;
 146}
 147
 148#else /* !CONFIG_ACPI */
 149
 150#define acpi_lapic 0
 151#define acpi_ioapic 0
 152static inline void acpi_noirq_set(void) { }
 153static inline void acpi_disable_pci(void) { }
 154static inline void disable_acpi(void) { }
 155
 156#endif /* !CONFIG_ACPI */
 157
 158#define ARCH_HAS_POWER_INIT     1
 159
 160struct bootnode;
 161
 162#ifdef CONFIG_ACPI_NUMA
 163extern int acpi_numa;
 164extern int acpi_scan_nodes(unsigned long start, unsigned long end);
 165#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
 166extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
 167                                   int num_nodes);
 168#else
 169static inline void acpi_fake_nodes(const struct bootnode *fake_nodes,
 170                                   int num_nodes)
 171{
 172}
 173#endif
 174
 175#define acpi_unlazy_tlb(x)      leave_mm(x)
 176
 177#endif /* _ASM_X86_ACPI_H */
 178