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
  33 #define COMPILER_DEPENDENT_INT64   long long
  34 #define COMPILER_DEPENDENT_UINT64  unsigned long long
  35
  36 /*
  37  * Calling conventions:
  38  *
  39  * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  40  * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  41  * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  42  * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  43  */
  44 #define ACPI_SYSTEM_XFACE
  45 #define ACPI_EXTERNAL_XFACE
  46 #define ACPI_INTERNAL_XFACE
  47 #define ACPI_INTERNAL_VAR_XFACE
  48
  49 /* Asm macros */
  50
  51 #define ACPI_ASM_MACROS
  52 #define BREAKPOINT3
  53 #define ACPI_DISABLE_IRQS() local_irq_disable()
  54 #define ACPI_ENABLE_IRQS()  local_irq_enable()
  55 #define ACPI_FLUSH_CPU_CACHE()  wbinvd()
  56
  57 int __acpi_acquire_global_lock(unsigned int *lock);
  58 int __acpi_release_global_lock(unsigned int *lock);
  59
  60 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
  61         ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
  62
  63 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
  64         ((Acq) = __acpi_release_global_lock(&facs->global_lock))
  65
  66 /*
  67  * Math helper asm macros
  68  */
  69 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
  70         asm("divl %2;"                               \
  71             : "=a"(q32), "=d"(r32)                   \
  72             : "r"(d32),                              \
  73              "0"(n_lo), "1"(n_hi))
  74
  75
  76 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
  77         asm("shrl   $1,%2       ;"      \
  78             "rcrl   $1,%3;"             \
  79             : "=r"(n_hi), "=r"(n_lo)    \
  80             : "0"(n_hi), "1"(n_lo))
  81
  82 #ifdef CONFIG_ACPI
  83 extern int acpi_lapic;
  84 extern int acpi_ioapic;
  85 extern int acpi_noirq;
  86 extern int acpi_strict;
  87 extern int acpi_disabled;
  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_pci_disabled = 1;
 100         acpi_noirq = 1;
 101 }
 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
 112 /* routines for saving/restoring kernel state */
 113 extern int acpi_save_state_mem(void);
 114 extern void acpi_restore_state_mem(void);
 115
 116 extern unsigned long acpi_wakeup_address;
 117
 118 /* early initialization routine */
 119 extern void acpi_reserve_wakeup_memory(void);
 120
 121 /*
 122  * Check if the CPU can handle C2 and deeper
 123  */
 124 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
 125 {
 126         /*
 127          * Early models (<=5) of AMD Opterons are not supposed to go into
 128          * C2 state.
 129          *
 130          * Steppings 0x0A and later are good
 131          */
 132         if (boot_cpu_data.x86 == 0x0F &&
 133             boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
 134             boot_cpu_data.x86_model <= 0x05 &&
 135             boot_cpu_data.x86_mask < 0x0A)
 136                 return 1;
 137         else if (c1e_detected)
 138                 return 1;
 139         else
 140                 return max_cstate;
 141 }
 142
 143 static inline bool arch_has_acpi_pdc(void)
 144 {
 145         struct cpuinfo_x86 *c = &cpu_data(0);
 146         return (c->x86_vendor == X86_VENDOR_INTEL ||
 147                 c->x86_vendor == X86_VENDOR_CENTAUR);
 148 }
 149
 150 static inline void arch_acpi_set_pdc_bits(u32 *buf)
 151 {
 152         struct cpuinfo_x86 *c = &cpu_data(0);
 153
 154         buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
 155
 156         if (cpu_has(c, X86_FEATURE_EST))
 157                 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 158
 159         if (cpu_has(c, X86_FEATURE_ACPI))
 160                 buf[2] |= ACPI_PDC_T_FFH;
 161
 162         /*
 163          * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
 164          */
 165         if (!cpu_has(c, X86_FEATURE_MWAIT))
 166                 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
 167 }
 168
 169 #else /* !CONFIG_ACPI */
 170
 171 #define acpi_lapic 0
 172 #define acpi_ioapic 0
 173 static inline void acpi_noirq_set(void) { }
 174 static inline void acpi_disable_pci(void) { }
 175 static inline void disable_acpi(void) { }
 176
 177 #endif /* !CONFIG_ACPI */
 178
 179 #define ARCH_HAS_POWER_INIT     1
 180
 181 struct bootnode;
 182
 183 #ifdef CONFIG_ACPI_NUMA
 184 extern int acpi_numa;
 185 extern int acpi_get_nodes(struct bootnode *physnodes);
 186 extern int acpi_scan_nodes(unsigned long start, unsigned long end);
 187 #define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
 188 extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
 189                                    int num_nodes);
 190 #else
 191 static inline void acpi_fake_nodes(const struct bootnode *fake_nodes,
 192                                    int num_nodes)
 193 {
 194 }
 195 #endif
 196
 197 #define acpi_unlazy_tlb(x)      leave_mm(x)
 198
 199 #endif /* _ASM_X86_ACPI_H */