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#include <asm/realmode.h>
  33
  34#define COMPILER_DEPENDENT_INT64   long long
  35#define COMPILER_DEPENDENT_UINT64  unsigned long long
  36
  37/*
  38 * Calling conventions:
  39 *
  40 * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  41 * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  42 * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  43 * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  44 */
  45#define ACPI_SYSTEM_XFACE
  46#define ACPI_EXTERNAL_XFACE
  47#define ACPI_INTERNAL_XFACE
  48#define ACPI_INTERNAL_VAR_XFACE
  49
  50/* Asm macros */
  51
  52#define ACPI_ASM_MACROS
  53#define BREAKPOINT3
  54#define ACPI_DISABLE_IRQS() local_irq_disable()
  55#define ACPI_ENABLE_IRQS()  local_irq_enable()
  56#define ACPI_FLUSH_CPU_CACHE()  wbinvd()
  57
  58int __acpi_acquire_global_lock(unsigned int *lock);
  59int __acpi_release_global_lock(unsigned int *lock);
  60
  61#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
  62        ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
  63
  64#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
  65        ((Acq) = __acpi_release_global_lock(&facs->global_lock))
  66
  67/*
  68 * Math helper asm macros
  69 */
  70#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
  71        asm("divl %2;"                               \
  72            : "=a"(q32), "=d"(r32)                   \
  73            : "r"(d32),                              \
  74             "0"(n_lo), "1"(n_hi))
  75
  76
  77#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
  78        asm("shrl   $1,%2       ;"      \
  79            "rcrl   $1,%3;"             \
  80            : "=r"(n_hi), "=r"(n_lo)    \
  81            : "0"(n_hi), "1"(n_lo))
  82
  83#ifdef CONFIG_ACPI
  84extern int acpi_lapic;
  85extern int acpi_ioapic;
  86extern int acpi_noirq;
  87extern int acpi_strict;
  88extern int acpi_disabled;
  89extern int acpi_pci_disabled;
  90extern int acpi_skip_timer_override;
  91extern int acpi_use_timer_override;
  92extern int acpi_fix_pin2_polarity;
  93
  94extern u8 acpi_sci_flags;
  95extern int acpi_sci_override_gsi;
  96void acpi_pic_sci_set_trigger(unsigned int, u16);
  97
  98extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
  99                                  int trigger, int polarity);
 100
 101static inline void disable_acpi(void)
 102{
 103        acpi_disabled = 1;
 104        acpi_pci_disabled = 1;
 105        acpi_noirq = 1;
 106}
 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/* Low-level suspend routine. */
 118extern int acpi_suspend_lowlevel(void);
 119
 120/* Physical address to resume after wakeup */
 121#define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
 122
 123/*
 124 * Check if the CPU can handle C2 and deeper
 125 */
 126static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
 127{
 128        /*
 129         * Early models (<=5) of AMD Opterons are not supposed to go into
 130         * C2 state.
 131         *
 132         * Steppings 0x0A and later are good
 133         */
 134        if (boot_cpu_data.x86 == 0x0F &&
 135            boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
 136            boot_cpu_data.x86_model <= 0x05 &&
 137            boot_cpu_data.x86_mask < 0x0A)
 138                return 1;
 139        else if (amd_e400_c1e_detected)
 140                return 1;
 141        else
 142                return max_cstate;
 143}
 144
 145static inline bool arch_has_acpi_pdc(void)
 146{
 147        struct cpuinfo_x86 *c = &cpu_data(0);
 148        return (c->x86_vendor == X86_VENDOR_INTEL ||
 149                c->x86_vendor == X86_VENDOR_CENTAUR);
 150}
 151
 152static inline void arch_acpi_set_pdc_bits(u32 *buf)
 153{
 154        struct cpuinfo_x86 *c = &cpu_data(0);
 155
 156        buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
 157
 158        if (cpu_has(c, X86_FEATURE_EST))
 159                buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 160
 161        if (cpu_has(c, X86_FEATURE_ACPI))
 162                buf[2] |= ACPI_PDC_T_FFH;
 163
 164        /*
 165         * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
 166         */
 167        if (!cpu_has(c, X86_FEATURE_MWAIT))
 168                buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
 169}
 170
 171#else /* !CONFIG_ACPI */
 172
 173#define acpi_lapic 0
 174#define acpi_ioapic 0
 175static inline void acpi_noirq_set(void) { }
 176static inline void acpi_disable_pci(void) { }
 177static inline void disable_acpi(void) { }
 178
 179#endif /* !CONFIG_ACPI */
 180
 181#define ARCH_HAS_POWER_INIT     1
 182
 183#ifdef CONFIG_ACPI_NUMA
 184extern int acpi_numa;
 185extern int x86_acpi_numa_init(void);
 186#endif /* CONFIG_ACPI_NUMA */
 187
 188#define acpi_unlazy_tlb(x)      leave_mm(x)
 189
 190#endif /* _ASM_X86_ACPI_H */
 191