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 static inline void disable_acpi(void)
  93 {
  94         acpi_disabled = 1;
  95         acpi_ht = 0;
  96         acpi_pci_disabled = 1;
  97         acpi_noirq = 1;
  98 }
  99
 100 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
 101 #define FIX_ACPI_PAGES 4
 102
 103 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
 104
 105 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
 106 static inline void acpi_disable_pci(void)
 107 {
 108         acpi_pci_disabled = 1;
 109         acpi_noirq_set();
 110 }
 111 extern int acpi_irq_balance_set(char *str);
 112
 113 /* routines for saving/restoring kernel state */
 114 extern int acpi_save_state_mem(void);
 115 extern void acpi_restore_state_mem(void);
 116
 117 extern unsigned long acpi_wakeup_address;
 118
 119 /* early initialization routine */
 120 extern void acpi_reserve_bootmem(void);
 121
 122 /*
 123  * Check if the CPU can handle C2 and deeper
 124  */
 125 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
 126 {
 127         /*
 128          * Early models (<=5) of AMD Opterons are not supposed to go into
 129          * C2 state.
 130          *
 131          * Steppings 0x0A and later are good
 132          */
 133         if (boot_cpu_data.x86 == 0x0F &&
 134             boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
 135             boot_cpu_data.x86_model <= 0x05 &&
 136             boot_cpu_data.x86_mask < 0x0A)
 137                 return 1;
 138         else
 139                 return max_cstate;
 140 }
 141
 142 #else /* !CONFIG_ACPI */
 143
 144 #define acpi_lapic 0
 145 #define acpi_ioapic 0
 146 static inline void acpi_noirq_set(void) { }
 147 static inline void acpi_disable_pci(void) { }
 148 static inline void disable_acpi(void) { }
 149
 150 #endif /* !CONFIG_ACPI */
 151
 152 #define ARCH_HAS_POWER_INIT     1
 153
 154 struct bootnode;
 155
 156 #ifdef CONFIG_ACPI_NUMA
 157 extern int acpi_numa;
 158 extern int acpi_scan_nodes(unsigned long start, unsigned long end);
 159 #ifdef CONFIG_X86_64
 160 # define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
 161 #endif
 162 extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
 163                                    int num_nodes);
 164 #else
 165 static inline void acpi_fake_nodes(const struct bootnode *fake_nodes,
 166                                    int num_nodes)
 167 {
 168 }
 169 #endif
 170
 171 #define acpi_unlazy_tlb(x)      leave_mm(x)
 172
 173 #endif /*__X86_ASM_ACPI_H*/