include/asm-ia64/acpi.h

   1 /*
   2  *  asm-ia64/acpi.h
   3  *
   4  *  Copyright (C) 1999 VA Linux Systems
   5  *  Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
   6  *  Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
   7  *  Copyright (C) 2001,2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   8  *
   9  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  24  *
  25  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  26  */
  27
  28 #ifndef _ASM_ACPI_H
  29 #define _ASM_ACPI_H
  30
  31 #ifdef __KERNEL__
  32
  33 #include <acpi/pdc_intel.h>
  34
  35 #include <linux/init.h>
  36 #include <linux/numa.h>
  37 #include <asm/system.h>
  38 #include <asm/numa.h>
  39
  40 #define COMPILER_DEPENDENT_INT64        long
  41 #define COMPILER_DEPENDENT_UINT64       unsigned long
  42
  43 /*
  44  * Calling conventions:
  45  *
  46  * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  47  * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  48  * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  49  * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  50  */
  51 #define ACPI_SYSTEM_XFACE
  52 #define ACPI_EXTERNAL_XFACE
  53 #define ACPI_INTERNAL_XFACE
  54 #define ACPI_INTERNAL_VAR_XFACE
  55
  56 /* Asm macros */
  57
  58 #define ACPI_ASM_MACROS
  59 #define BREAKPOINT3
  60 #define ACPI_DISABLE_IRQS() local_irq_disable()
  61 #define ACPI_ENABLE_IRQS()  local_irq_enable()
  62 #define ACPI_FLUSH_CPU_CACHE()
  63
  64 static inline int
  65 ia64_acpi_acquire_global_lock (unsigned int *lock)
  66 {
  67         unsigned int old, new, val;
  68         do {
  69                 old = *lock;
  70                 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
  71                 val = ia64_cmpxchg4_acq(lock, new, old);
  72         } while (unlikely (val != old));
  73         return (new < 3) ? -1 : 0;
  74 }
  75
  76 static inline int
  77 ia64_acpi_release_global_lock (unsigned int *lock)
  78 {
  79         unsigned int old, new, val;
  80         do {
  81                 old = *lock;
  82                 new = old & ~0x3;
  83                 val = ia64_cmpxchg4_acq(lock, new, old);
  84         } while (unlikely (val != old));
  85         return old & 0x1;
  86 }
  87
  88 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq)                             \
  89         ((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock))
  90
  91 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq)                             \
  92         ((Acq) = ia64_acpi_release_global_lock(&facs->global_lock))
  93
  94 #define acpi_disabled 0 /* ACPI always enabled on IA64 */
  95 #define acpi_noirq 0    /* ACPI always enabled on IA64 */
  96 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
  97 #define acpi_strict 1   /* no ACPI spec workarounds on IA64 */
  98 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
  99 static inline void disable_acpi(void) { }
 100
 101 const char *acpi_get_sysname (void);
 102 int acpi_request_vector (u32 int_type);
 103 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 104
 105 /* routines for saving/restoring kernel state */
 106 extern int acpi_save_state_mem(void);
 107 extern void acpi_restore_state_mem(void);
 108 extern unsigned long acpi_wakeup_address;
 109
 110 /*
 111  * Record the cpei override flag and current logical cpu. This is
 112  * useful for CPU removal.
 113  */
 114 extern unsigned int can_cpei_retarget(void);
 115 extern unsigned int is_cpu_cpei_target(unsigned int cpu);
 116 extern void set_cpei_target_cpu(unsigned int cpu);
 117 extern unsigned int get_cpei_target_cpu(void);
 118 extern void prefill_possible_map(void);
 119 #ifdef CONFIG_ACPI_HOTPLUG_CPU
 120 extern int additional_cpus;
 121 #else
 122 #define additional_cpus 0
 123 #endif
 124
 125 #ifdef CONFIG_ACPI_NUMA
 126 #if MAX_NUMNODES > 256
 127 #define MAX_PXM_DOMAINS MAX_NUMNODES
 128 #else
 129 #define MAX_PXM_DOMAINS (256)
 130 #endif
 131 extern int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
 132 extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
 133 #endif
 134
 135 #define acpi_unlazy_tlb(x)
 136
 137 #ifdef CONFIG_ACPI_NUMA
 138 extern cpumask_t early_cpu_possible_map;
 139 #define for_each_possible_early_cpu(cpu)  \
 140         for_each_cpu_mask((cpu), early_cpu_possible_map)
 141
 142 static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus)
 143 {
 144         int low_cpu, high_cpu;
 145         int cpu;
 146         int next_nid = 0;
 147
 148         low_cpu = cpus_weight(early_cpu_possible_map);
 149
 150         high_cpu = max(low_cpu, min_cpus);
 151         high_cpu = min(high_cpu + reserve_cpus, NR_CPUS);
 152
 153         for (cpu = low_cpu; cpu < high_cpu; cpu++) {
 154                 cpu_set(cpu, early_cpu_possible_map);
 155                 if (node_cpuid[cpu].nid == NUMA_NO_NODE) {
 156                         node_cpuid[cpu].nid = next_nid;
 157                         next_nid++;
 158                         if (next_nid >= num_online_nodes())
 159                                 next_nid = 0;
 160                 }
 161         }
 162 }
 163 #endif /* CONFIG_ACPI_NUMA */
 164
 165 #endif /*__KERNEL__*/
 166
 167 #endif /*_ASM_ACPI_H*/