LXR linux/arch/ia64/include/asm/acpi.h

   1/*
   2 *  Copyright (C) 1999 VA Linux Systems
   3 *  Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
   4 *  Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
   5 *  Copyright (C) 2001,2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   6 *
   7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8 *
   9 *  This program is free software; you can redistribute it and/or modify
  10 *  it under the terms of the GNU General Public License as published by
  11 *  the Free Software Foundation; either version 2 of the License, or
  12 *  (at your option) any later version.
  13 *
  14 *  This program is distributed in the hope that it will be useful,
  15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 *  GNU General Public License for more details.
  18 *
  19 *  You should have received a copy of the GNU General Public License
  20 *  along with this program; if not, write to the Free Software
  21 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22 *
  23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  24 */
  25
  26#ifndef _ASM_ACPI_H
  27#define _ASM_ACPI_H
  28
  29#ifdef __KERNEL__
  30
  31#include <acpi/pdc_intel.h>
  32
  33#include <linux/init.h>
  34#include <linux/numa.h>
  35#include <asm/system.h>
  36#include <asm/numa.h>
  37
  38#define COMPILER_DEPENDENT_INT64        long
  39#define COMPILER_DEPENDENT_UINT64       unsigned long
  40
  41/*
  42 * Calling conventions:
  43 *
  44 * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  45 * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  46 * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  47 * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  48 */
  49#define ACPI_SYSTEM_XFACE
  50#define ACPI_EXTERNAL_XFACE
  51#define ACPI_INTERNAL_XFACE
  52#define ACPI_INTERNAL_VAR_XFACE
  53
  54/* Asm macros */
  55
  56#define ACPI_ASM_MACROS
  57#define BREAKPOINT3
  58#define ACPI_DISABLE_IRQS() local_irq_disable()
  59#define ACPI_ENABLE_IRQS()  local_irq_enable()
  60#define ACPI_FLUSH_CPU_CACHE()
  61
  62static inline int
  63ia64_acpi_acquire_global_lock (unsigned int *lock)
  64{
  65        unsigned int old, new, val;
  66        do {
  67                old = *lock;
  68                new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
  69                val = ia64_cmpxchg4_acq(lock, new, old);
  70        } while (unlikely (val != old));
  71        return (new < 3) ? -1 : 0;
  72}
  73
  74static inline int
  75ia64_acpi_release_global_lock (unsigned int *lock)
  76{
  77        unsigned int old, new, val;
  78        do {
  79                old = *lock;
  80                new = old & ~0x3;
  81                val = ia64_cmpxchg4_acq(lock, new, old);
  82        } while (unlikely (val != old));
  83        return old & 0x1;
  84}
  85
  86#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq)                             \
  87        ((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock))
  88
  89#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq)                             \
  90        ((Acq) = ia64_acpi_release_global_lock(&facs->global_lock))
  91
  92#ifdef  CONFIG_ACPI
  93#define acpi_disabled 0 /* ACPI always enabled on IA64 */
  94#define acpi_noirq 0    /* ACPI always enabled on IA64 */
  95#define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
  96#define acpi_strict 1   /* no ACPI spec workarounds on IA64 */
  97#endif
  98#define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
  99static inline void disable_acpi(void) { }
 100
 101const char *acpi_get_sysname (void);
 102int acpi_request_vector (u32 int_type);
 103int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 104
 105/* routines for saving/restoring kernel state */
 106extern int acpi_save_state_mem(void);
 107extern void acpi_restore_state_mem(void);
 108extern 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 */
 114extern unsigned int can_cpei_retarget(void);
 115extern unsigned int is_cpu_cpei_target(unsigned int cpu);
 116extern void set_cpei_target_cpu(unsigned int cpu);
 117extern unsigned int get_cpei_target_cpu(void);
 118extern void prefill_possible_map(void);
 119#ifdef CONFIG_ACPI_HOTPLUG_CPU
 120extern 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
 131extern int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
 132extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
 133#endif
 134
 135#define acpi_unlazy_tlb(x)
 136
 137#ifdef CONFIG_ACPI_NUMA
 138extern 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
 142static 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*/
 168