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/numa.h>
  36
  37 #define COMPILER_DEPENDENT_INT64        long
  38 #define COMPILER_DEPENDENT_UINT64       unsigned long
  39
  40 /*
  41  * Calling conventions:
  42  *
  43  * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  44  * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  45  * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  46  * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  47  */
  48 #define ACPI_SYSTEM_XFACE
  49 #define ACPI_EXTERNAL_XFACE
  50 #define ACPI_INTERNAL_XFACE
  51 #define ACPI_INTERNAL_VAR_XFACE
  52
  53 /* Asm macros */
  54
  55 #define ACPI_FLUSH_CPU_CACHE()
  56
  57 static inline int
  58 ia64_acpi_acquire_global_lock (unsigned int *lock)
  59 {
  60         unsigned int old, new, val;
  61         do {
  62                 old = *lock;
  63                 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
  64                 val = ia64_cmpxchg4_acq(lock, new, old);
  65         } while (unlikely (val != old));
  66         return (new < 3) ? -1 : 0;
  67 }
  68
  69 static inline int
  70 ia64_acpi_release_global_lock (unsigned int *lock)
  71 {
  72         unsigned int old, new, val;
  73         do {
  74                 old = *lock;
  75                 new = old & ~0x3;
  76                 val = ia64_cmpxchg4_acq(lock, new, old);
  77         } while (unlikely (val != old));
  78         return old & 0x1;
  79 }
  80
  81 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq)                             \
  82         ((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock))
  83
  84 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq)                             \
  85         ((Acq) = ia64_acpi_release_global_lock(&facs->global_lock))
  86
  87 #ifdef  CONFIG_ACPI
  88 #define acpi_disabled 0 /* ACPI always enabled on IA64 */
  89 #define acpi_noirq 0    /* ACPI always enabled on IA64 */
  90 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
  91 #define acpi_strict 1   /* no ACPI spec workarounds on IA64 */
  92 #endif
  93 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
  94 static inline void disable_acpi(void) { }
  95 static inline void pci_acpi_crs_quirks(void) { }
  96
  97 #ifdef CONFIG_IA64_GENERIC
  98 const char *acpi_get_sysname (void);
  99 #else
 100 static inline const char *acpi_get_sysname (void)
 101 {
 102 # if defined (CONFIG_IA64_HP_SIM)
 103         return "hpsim";
 104 # elif defined (CONFIG_IA64_HP_ZX1)
 105         return "hpzx1";
 106 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
 107         return "hpzx1_swiotlb";
 108 # elif defined (CONFIG_IA64_SGI_SN2)
 109         return "sn2";
 110 # elif defined (CONFIG_IA64_SGI_UV)
 111         return "uv";
 112 # elif defined (CONFIG_IA64_DIG)
 113         return "dig";
 114 # elif defined (CONFIG_IA64_XEN_GUEST)
 115         return "xen";
 116 # elif defined(CONFIG_IA64_DIG_VTD)
 117         return "dig_vtd";
 118 # else
 119 #       error Unknown platform.  Fix acpi.c.
 120 # endif
 121 }
 122 #endif
 123 int acpi_request_vector (u32 int_type);
 124 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 125
 126 /* Low-level suspend routine. */
 127 extern int acpi_suspend_lowlevel(void);
 128
 129 extern unsigned long acpi_wakeup_address;
 130
 131 /*
 132  * Record the cpei override flag and current logical cpu. This is
 133  * useful for CPU removal.
 134  */
 135 extern unsigned int can_cpei_retarget(void);
 136 extern unsigned int is_cpu_cpei_target(unsigned int cpu);
 137 extern void set_cpei_target_cpu(unsigned int cpu);
 138 extern unsigned int get_cpei_target_cpu(void);
 139 extern void prefill_possible_map(void);
 140 #ifdef CONFIG_ACPI_HOTPLUG_CPU
 141 extern int additional_cpus;
 142 #else
 143 #define additional_cpus 0
 144 #endif
 145
 146 #ifdef CONFIG_ACPI_NUMA
 147 #if MAX_NUMNODES > 256
 148 #define MAX_PXM_DOMAINS MAX_NUMNODES
 149 #else
 150 #define MAX_PXM_DOMAINS (256)
 151 #endif
 152 extern int pxm_to_nid_map[MAX_PXM_DOMAINS];
 153 extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
 154 #endif
 155
 156 static inline bool arch_has_acpi_pdc(void) { return true; }
 157 static inline void arch_acpi_set_pdc_bits(u32 *buf)
 158 {
 159         buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
 160 }
 161
 162 #define acpi_unlazy_tlb(x)
 163
 164 #ifdef CONFIG_ACPI_NUMA
 165 extern cpumask_t early_cpu_possible_map;
 166 #define for_each_possible_early_cpu(cpu)  \
 167         for_each_cpu_mask((cpu), early_cpu_possible_map)
 168
 169 static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus)
 170 {
 171         int low_cpu, high_cpu;
 172         int cpu;
 173         int next_nid = 0;
 174
 175         low_cpu = cpus_weight(early_cpu_possible_map);
 176
 177         high_cpu = max(low_cpu, min_cpus);
 178         high_cpu = min(high_cpu + reserve_cpus, NR_CPUS);
 179
 180         for (cpu = low_cpu; cpu < high_cpu; cpu++) {
 181                 cpu_set(cpu, early_cpu_possible_map);
 182                 if (node_cpuid[cpu].nid == NUMA_NO_NODE) {
 183                         node_cpuid[cpu].nid = next_nid;
 184                         next_nid++;
 185                         if (next_nid >= num_online_nodes())
 186                                 next_nid = 0;
 187                 }
 188         }
 189 }
 190 #endif /* CONFIG_ACPI_NUMA */
 191
 192 #endif /*__KERNEL__*/
 193
 194 #endif /*_ASM_ACPI_H*/