include/asm-x86/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
  32 #define COMPILER_DEPENDENT_INT64   long long
  33 #define COMPILER_DEPENDENT_UINT64  unsigned long long
  34
  35 /*
  36  * Calling conventions:
  37  *
  38  * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  39  * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  40  * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  41  * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  42  */
  43 #define ACPI_SYSTEM_XFACE
  44 #define ACPI_EXTERNAL_XFACE
  45 #define ACPI_INTERNAL_XFACE
  46 #define ACPI_INTERNAL_VAR_XFACE
  47
  48 /* Asm macros */
  49
  50 #define ACPI_ASM_MACROS
  51 #define BREAKPOINT3
  52 #define ACPI_DISABLE_IRQS() local_irq_disable()
  53 #define ACPI_ENABLE_IRQS()  local_irq_enable()
  54 #define ACPI_FLUSH_CPU_CACHE()  wbinvd()
  55
  56 int __acpi_acquire_global_lock(unsigned int *lock);
  57 int __acpi_release_global_lock(unsigned int *lock);
  58
  59 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
  60         ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
  61
  62 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
  63         ((Acq) = __acpi_release_global_lock(&facs->global_lock))
  64
  65 /*
  66  * Math helper asm macros
  67  */
  68 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
  69         asm("divl %2;"                               \
  70             : "=a"(q32), "=d"(r32)                   \
  71             : "r"(d32),                              \
  72              "0"(n_lo), "1"(n_hi))
  73
  74
  75 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
  76         asm("shrl   $1,%2       ;"      \
  77             "rcrl   $1,%3;"             \
  78             : "=r"(n_hi), "=r"(n_lo)    \
  79             : "0"(n_hi), "1"(n_lo))
  80
  81 #ifdef CONFIG_ACPI
  82 extern int acpi_lapic;
  83 extern int acpi_ioapic;
  84 extern int acpi_noirq;
  85 extern int acpi_strict;
  86 extern int acpi_disabled;
  87 extern int acpi_ht;
  88 extern int acpi_pci_disabled;
  89 extern int acpi_skip_timer_override;
  90 extern int acpi_use_timer_override;
  91
  92 extern u8 acpi_sci_flags;
  93 extern int acpi_sci_override_gsi;
  94 void acpi_pic_sci_set_trigger(unsigned int, u16);
  95
  96 static inline void disable_acpi(void)
  97 {
  98         acpi_disabled = 1;
  99         acpi_ht = 0;
 100         acpi_pci_disabled = 1;
 101         acpi_noirq = 1;
 102 }
 103
 104 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
 105 #define FIX_ACPI_PAGES 4
 106
 107 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
 108
 109 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
 110 static inline void acpi_disable_pci(void)
 111 {
 112         acpi_pci_disabled = 1;
 113         acpi_noirq_set();
 114 }
 115 extern int acpi_irq_balance_set(char *str);
 116
 117 /* routines for saving/restoring kernel state */
 118 extern int acpi_save_state_mem(void);
 119 extern void acpi_restore_state_mem(void);
 120
 121 extern unsigned long acpi_wakeup_address;
 122
 123 /* early initialization routine */
 124 extern void acpi_reserve_bootmem(void);
 125
 126 /*
 127  * Check if the CPU can handle C2 and deeper
 128  */
 129 static 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
 143                 return max_cstate;
 144 }
 145
 146 #else /* !CONFIG_ACPI */
 147
 148 #define acpi_lapic 0
 149 #define acpi_ioapic 0
 150 static inline void acpi_noirq_set(void) { }
 151 static inline void acpi_disable_pci(void) { }
 152 static inline void disable_acpi(void) { }
 153
 154 #endif /* !CONFIG_ACPI */
 155
 156 #define ARCH_HAS_POWER_INIT     1
 157
 158 struct bootnode;
 159
 160 #ifdef CONFIG_ACPI_NUMA
 161 extern int acpi_numa;
 162 extern int acpi_scan_nodes(unsigned long start, unsigned long end);
 163 #ifdef CONFIG_X86_64
 164 # define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
 165 #endif
 166 extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
 167                                    int num_nodes);
 168 #else
 169 static 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 /*__X86_ASM_ACPI_H*/