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 #ifdef  CONFIG_ACPI
  38 extern int acpi_lapic;
  39 #define acpi_disabled 0 /* ACPI always enabled on IA64 */
  40 #define acpi_noirq 0    /* ACPI always enabled on IA64 */
  41 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
  42 #define acpi_strict 1   /* no ACPI spec workarounds on IA64 */
  43
  44 static inline bool acpi_has_cpu_in_madt(void)
  45 {
  46         return !!acpi_lapic;
  47 }
  48 #endif
  49 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
  50 static inline void disable_acpi(void) { }
  51
  52 #ifdef CONFIG_IA64_GENERIC
  53 const char *acpi_get_sysname (void);
  54 #else
  55 static inline const char *acpi_get_sysname (void)
  56 {
  57 # if defined (CONFIG_IA64_HP_SIM)
  58         return "hpsim";
  59 # elif defined (CONFIG_IA64_HP_ZX1)
  60         return "hpzx1";
  61 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
  62         return "hpzx1_swiotlb";
  63 # elif defined (CONFIG_IA64_SGI_SN2)
  64         return "sn2";
  65 # elif defined (CONFIG_IA64_SGI_UV)
  66         return "uv";
  67 # elif defined (CONFIG_IA64_DIG)
  68         return "dig";
  69 # elif defined(CONFIG_IA64_DIG_VTD)
  70         return "dig_vtd";
  71 # else
  72 #       error Unknown platform.  Fix acpi.c.
  73 # endif
  74 }
  75 #endif
  76 int acpi_request_vector (u32 int_type);
  77 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
  78
  79 /* Low-level suspend routine. */
  80 extern int acpi_suspend_lowlevel(void);
  81
  82 extern unsigned long acpi_wakeup_address;
  83
  84 /*
  85  * Record the cpei override flag and current logical cpu. This is
  86  * useful for CPU removal.
  87  */
  88 extern unsigned int can_cpei_retarget(void);
  89 extern unsigned int is_cpu_cpei_target(unsigned int cpu);
  90 extern void set_cpei_target_cpu(unsigned int cpu);
  91 extern unsigned int get_cpei_target_cpu(void);
  92 extern void prefill_possible_map(void);
  93 #ifdef CONFIG_ACPI_HOTPLUG_CPU
  94 extern int additional_cpus;
  95 #else
  96 #define additional_cpus 0
  97 #endif
  98
  99 #ifdef CONFIG_ACPI_NUMA
 100 #if MAX_NUMNODES > 256
 101 #define MAX_PXM_DOMAINS MAX_NUMNODES
 102 #else
 103 #define MAX_PXM_DOMAINS (256)
 104 #endif
 105 extern int pxm_to_nid_map[MAX_PXM_DOMAINS];
 106 extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
 107 #endif
 108
 109 static inline bool arch_has_acpi_pdc(void) { return true; }
 110 static inline void arch_acpi_set_pdc_bits(u32 *buf)
 111 {
 112         buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
 113 }
 114
 115 #define acpi_unlazy_tlb(x)
 116
 117 #ifdef CONFIG_ACPI_NUMA
 118 extern cpumask_t early_cpu_possible_map;
 119 #define for_each_possible_early_cpu(cpu)  \
 120         for_each_cpu_mask((cpu), early_cpu_possible_map)
 121
 122 static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus)
 123 {
 124         int low_cpu, high_cpu;
 125         int cpu;
 126         int next_nid = 0;
 127
 128         low_cpu = cpus_weight(early_cpu_possible_map);
 129
 130         high_cpu = max(low_cpu, min_cpus);
 131         high_cpu = min(high_cpu + reserve_cpus, NR_CPUS);
 132
 133         for (cpu = low_cpu; cpu < high_cpu; cpu++) {
 134                 cpu_set(cpu, early_cpu_possible_map);
 135                 if (node_cpuid[cpu].nid == NUMA_NO_NODE) {
 136                         node_cpuid[cpu].nid = next_nid;
 137                         next_nid++;
 138                         if (next_nid >= num_online_nodes())
 139                                 next_nid = 0;
 140                 }
 141         }
 142 }
 143 #endif /* CONFIG_ACPI_NUMA */
 144
 145 #endif /*__KERNEL__*/
 146
 147 #endif /*_ASM_ACPI_H*/