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/fixmap.h>
  30#include <asm/processor.h>
  31#include <asm/mmu.h>
  32#include <asm/mpspec.h>
  33#include <asm/realmode.h>
  34
  35#define COMPILER_DEPENDENT_INT64   long long
  36#define COMPILER_DEPENDENT_UINT64  unsigned long long
  37
  38/*
  39 * Calling conventions:
  40 *
  41 * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  42 * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  43 * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  44 * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  45 */
  46#define ACPI_SYSTEM_XFACE
  47#define ACPI_EXTERNAL_XFACE
  48#define ACPI_INTERNAL_XFACE
  49#define ACPI_INTERNAL_VAR_XFACE
  50
  51/* Asm macros */
  52
  53#define ACPI_FLUSH_CPU_CACHE()  wbinvd()
  54
  55int __acpi_acquire_global_lock(unsigned int *lock);
  56int __acpi_release_global_lock(unsigned int *lock);
  57
  58#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
  59        ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
  60
  61#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
  62        ((Acq) = __acpi_release_global_lock(&facs->global_lock))
  63
  64/*
  65 * Math helper asm macros
  66 */
  67#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
  68        asm("divl %2;"                               \
  69            : "=a"(q32), "=d"(r32)                   \
  70            : "r"(d32),                              \
  71             "0"(n_lo), "1"(n_hi))
  72
  73
  74#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
  75        asm("shrl   $1,%2       ;"      \
  76            "rcrl   $1,%3;"             \
  77            : "=r"(n_hi), "=r"(n_lo)    \
  78            : "0"(n_hi), "1"(n_lo))
  79
  80#ifdef CONFIG_ACPI
  81extern int acpi_lapic;
  82extern int acpi_ioapic;
  83extern int acpi_noirq;
  84extern int acpi_strict;
  85extern int acpi_disabled;
  86extern int acpi_pci_disabled;
  87extern int acpi_skip_timer_override;
  88extern int acpi_use_timer_override;
  89extern int acpi_fix_pin2_polarity;
  90extern int acpi_disable_cmcff;
  91
  92extern u8 acpi_sci_flags;
  93extern int acpi_sci_override_gsi;
  94void acpi_pic_sci_set_trigger(unsigned int, u16);
  95
  96extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
  97                                  int trigger, int polarity);
  98
  99static inline void disable_acpi(void)
 100{
 101        acpi_disabled = 1;
 102        acpi_pci_disabled = 1;
 103        acpi_noirq = 1;
 104}
 105
 106extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
 107
 108static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
 109static inline void acpi_disable_pci(void)
 110{
 111        acpi_pci_disabled = 1;
 112        acpi_noirq_set();
 113}
 114
 115/* Low-level suspend routine. */
 116extern int (*acpi_suspend_lowlevel)(void);
 117
 118/* Physical address to resume after wakeup */
 119#define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
 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 (amd_e400_c1e_detected)
 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
 173#define acpi_disable_cmcff 0
 174static inline void acpi_noirq_set(void) { }
 175static inline void acpi_disable_pci(void) { }
 176static inline void disable_acpi(void) { }
 177
 178#endif /* !CONFIG_ACPI */
 179
 180#define ARCH_HAS_POWER_INIT     1
 181
 182#ifdef CONFIG_ACPI_NUMA
 183extern int acpi_numa;
 184extern int x86_acpi_numa_init(void);
 185#endif /* CONFIG_ACPI_NUMA */
 186
 187#define acpi_unlazy_tlb(x)      leave_mm(x)
 188
 189#endif /* _ASM_X86_ACPI_H */
 190