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 #ifdef CONFIG_ACPI
  36 extern int acpi_lapic;
  37 extern int acpi_ioapic;
  38 extern int acpi_noirq;
  39 extern int acpi_strict;
  40 extern int acpi_disabled;
  41 extern int acpi_pci_disabled;
  42 extern int acpi_skip_timer_override;
  43 extern int acpi_use_timer_override;
  44 extern int acpi_fix_pin2_polarity;
  45 extern int acpi_disable_cmcff;
  46
  47 extern u8 acpi_sci_flags;
  48 extern int acpi_sci_override_gsi;
  49 void acpi_pic_sci_set_trigger(unsigned int, u16);
  50
  51 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
  52                                   int trigger, int polarity);
  53
  54 static inline void disable_acpi(void)
  55 {
  56         acpi_disabled = 1;
  57         acpi_pci_disabled = 1;
  58         acpi_noirq = 1;
  59 }
  60
  61 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
  62
  63 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
  64 static inline void acpi_disable_pci(void)
  65 {
  66         acpi_pci_disabled = 1;
  67         acpi_noirq_set();
  68 }
  69
  70 /* Low-level suspend routine. */
  71 extern int (*acpi_suspend_lowlevel)(void);
  72
  73 /* Physical address to resume after wakeup */
  74 #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
  75
  76 /*
  77  * Check if the CPU can handle C2 and deeper
  78  */
  79 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
  80 {
  81         /*
  82          * Early models (<=5) of AMD Opterons are not supposed to go into
  83          * C2 state.
  84          *
  85          * Steppings 0x0A and later are good
  86          */
  87         if (boot_cpu_data.x86 == 0x0F &&
  88             boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
  89             boot_cpu_data.x86_model <= 0x05 &&
  90             boot_cpu_data.x86_mask < 0x0A)
  91                 return 1;
  92         else if (amd_e400_c1e_detected)
  93                 return 1;
  94         else
  95                 return max_cstate;
  96 }
  97
  98 static inline bool arch_has_acpi_pdc(void)
  99 {
 100         struct cpuinfo_x86 *c = &cpu_data(0);
 101         return (c->x86_vendor == X86_VENDOR_INTEL ||
 102                 c->x86_vendor == X86_VENDOR_CENTAUR);
 103 }
 104
 105 static inline void arch_acpi_set_pdc_bits(u32 *buf)
 106 {
 107         struct cpuinfo_x86 *c = &cpu_data(0);
 108
 109         buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
 110
 111         if (cpu_has(c, X86_FEATURE_EST))
 112                 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 113
 114         if (cpu_has(c, X86_FEATURE_ACPI))
 115                 buf[2] |= ACPI_PDC_T_FFH;
 116
 117         /*
 118          * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
 119          */
 120         if (!cpu_has(c, X86_FEATURE_MWAIT))
 121                 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
 122 }
 123
 124 static inline bool acpi_has_cpu_in_madt(void)
 125 {
 126         return !!acpi_lapic;
 127 }
 128
 129 #else /* !CONFIG_ACPI */
 130
 131 #define acpi_lapic 0
 132 #define acpi_ioapic 0
 133 #define acpi_disable_cmcff 0
 134 static inline void acpi_noirq_set(void) { }
 135 static inline void acpi_disable_pci(void) { }
 136 static inline void disable_acpi(void) { }
 137
 138 #endif /* !CONFIG_ACPI */
 139
 140 #define ARCH_HAS_POWER_INIT     1
 141
 142 #ifdef CONFIG_ACPI_NUMA
 143 extern int acpi_numa;
 144 extern int x86_acpi_numa_init(void);
 145 #endif /* CONFIG_ACPI_NUMA */
 146
 147 #define acpi_unlazy_tlb(x)      leave_mm(x)
 148
 149 #endif /* _ASM_X86_ACPI_H */