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_FLUSH_CPU_CACHE()  wbinvd()
  53
  54 int __acpi_acquire_global_lock(unsigned int *lock);
  55 int __acpi_release_global_lock(unsigned int *lock);
  56
  57 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
  58         ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
  59
  60 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
  61         ((Acq) = __acpi_release_global_lock(&facs->global_lock))
  62
  63 /*
  64  * Math helper asm macros
  65  */
  66 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
  67         asm("divl %2;"                               \
  68             : "=a"(q32), "=d"(r32)                   \
  69             : "r"(d32),                              \
  70              "0"(n_lo), "1"(n_hi))
  71
  72
  73 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
  74         asm("shrl   $1,%2       ;"      \
  75             "rcrl   $1,%3;"             \
  76             : "=r"(n_hi), "=r"(n_lo)    \
  77             : "0"(n_hi), "1"(n_lo))
  78
  79 #ifdef CONFIG_ACPI
  80 extern int acpi_lapic;
  81 extern int acpi_ioapic;
  82 extern int acpi_noirq;
  83 extern int acpi_strict;
  84 extern int acpi_disabled;
  85 extern int acpi_pci_disabled;
  86 extern int acpi_skip_timer_override;
  87 extern int acpi_use_timer_override;
  88 extern int acpi_fix_pin2_polarity;
  89
  90 extern u8 acpi_sci_flags;
  91 extern int acpi_sci_override_gsi;
  92 void acpi_pic_sci_set_trigger(unsigned int, u16);
  93
  94 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
  95                                   int trigger, int polarity);
  96
  97 static inline void disable_acpi(void)
  98 {
  99         acpi_disabled = 1;
 100         acpi_pci_disabled = 1;
 101         acpi_noirq = 1;
 102 }
 103
 104 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
 105
 106 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
 107 static inline void acpi_disable_pci(void)
 108 {
 109         acpi_pci_disabled = 1;
 110         acpi_noirq_set();
 111 }
 112
 113 /* Low-level suspend routine. */
 114 extern int (*acpi_suspend_lowlevel)(void);
 115
 116 /* Physical address to resume after wakeup */
 117 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
 118
 119 /*
 120  * Check if the CPU can handle C2 and deeper
 121  */
 122 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
 123 {
 124         /*
 125          * Early models (<=5) of AMD Opterons are not supposed to go into
 126          * C2 state.
 127          *
 128          * Steppings 0x0A and later are good
 129          */
 130         if (boot_cpu_data.x86 == 0x0F &&
 131             boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
 132             boot_cpu_data.x86_model <= 0x05 &&
 133             boot_cpu_data.x86_mask < 0x0A)
 134                 return 1;
 135         else if (amd_e400_c1e_detected)
 136                 return 1;
 137         else
 138                 return max_cstate;
 139 }
 140
 141 static inline bool arch_has_acpi_pdc(void)
 142 {
 143         struct cpuinfo_x86 *c = &cpu_data(0);
 144         return (c->x86_vendor == X86_VENDOR_INTEL ||
 145                 c->x86_vendor == X86_VENDOR_CENTAUR);
 146 }
 147
 148 static inline void arch_acpi_set_pdc_bits(u32 *buf)
 149 {
 150         struct cpuinfo_x86 *c = &cpu_data(0);
 151
 152         buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
 153
 154         if (cpu_has(c, X86_FEATURE_EST))
 155                 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 156
 157         if (cpu_has(c, X86_FEATURE_ACPI))
 158                 buf[2] |= ACPI_PDC_T_FFH;
 159
 160         /*
 161          * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
 162          */
 163         if (!cpu_has(c, X86_FEATURE_MWAIT))
 164                 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
 165 }
 166
 167 #else /* !CONFIG_ACPI */
 168
 169 #define acpi_lapic 0
 170 #define acpi_ioapic 0
 171 static inline void acpi_noirq_set(void) { }
 172 static inline void acpi_disable_pci(void) { }
 173 static inline void disable_acpi(void) { }
 174
 175 #endif /* !CONFIG_ACPI */
 176
 177 #define ARCH_HAS_POWER_INIT     1
 178
 179 #ifdef CONFIG_ACPI_NUMA
 180 extern int acpi_numa;
 181 extern int x86_acpi_numa_init(void);
 182 #endif /* CONFIG_ACPI_NUMA */
 183
 184 #define acpi_unlazy_tlb(x)      leave_mm(x)
 185
 186 #endif /* _ASM_X86_ACPI_H */