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 <linux/init.h>
  34 #include <linux/numa.h>
  35 #include <asm/system.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_ASM_MACROS
  56 #define BREAKPOINT3
  57 #define ACPI_DISABLE_IRQS() local_irq_disable()
  58 #define ACPI_ENABLE_IRQS()  local_irq_enable()
  59 #define ACPI_FLUSH_CPU_CACHE()
  60
  61 static inline int
  62 ia64_acpi_acquire_global_lock (unsigned int *lock)
  63 {
  64         unsigned int old, new, val;
  65         do {
  66                 old = *lock;
  67                 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
  68                 val = ia64_cmpxchg4_acq(lock, new, old);
  69         } while (unlikely (val != old));
  70         return (new < 3) ? -1 : 0;
  71 }
  72
  73 static inline int
  74 ia64_acpi_release_global_lock (unsigned int *lock)
  75 {
  76         unsigned int old, new, val;
  77         do {
  78                 old = *lock;
  79                 new = old & ~0x3;
  80                 val = ia64_cmpxchg4_acq(lock, new, old);
  81         } while (unlikely (val != old));
  82         return old & 0x1;
  83 }
  84
  85 #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq)                            \
  86         ((Acq) = ia64_acpi_acquire_global_lock((unsigned int *) GLptr))
  87
  88 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq)                            \
  89         ((Acq) = ia64_acpi_release_global_lock((unsigned int *) GLptr))
  90
  91 #define acpi_disabled 0 /* ACPI always enabled on IA64 */
  92 #define acpi_noirq 0    /* ACPI always enabled on IA64 */
  93 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
  94 #define acpi_strict 1   /* no ACPI spec workarounds on IA64 */
  95 static inline void disable_acpi(void) { }
  96
  97 const char *acpi_get_sysname (void);
  98 int acpi_request_vector (u32 int_type);
  99 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 100
 101 /*
 102  * Record the cpei override flag and current logical cpu. This is
 103  * useful for CPU removal.
 104  */
 105 extern unsigned int can_cpei_retarget(void);
 106 extern unsigned int is_cpu_cpei_target(unsigned int cpu);
 107 extern void set_cpei_target_cpu(unsigned int cpu);
 108 extern unsigned int get_cpei_target_cpu(void);
 109
 110 #ifdef CONFIG_ACPI_NUMA
 111 /* Proximity bitmap length; _PXM is at most 255 (8 bit)*/
 112 #define MAX_PXM_DOMAINS (256)
 113 extern int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
 114 extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
 115 #endif
 116
 117 extern u16 ia64_acpiid_to_sapicid[];
 118
 119 /*
 120  * Refer Intel ACPI _PDC support document for bit definitions
 121  */
 122 #define ACPI_PDC_EST_CAPABILITY_SMP     0x8
 123
 124 #endif /*__KERNEL__*/
 125
 126 #endif /*_ASM_ACPI_H*/