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 62 static inline int 63 ia64_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 74 static inline int 75 ia64_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 #define acpi_ht 0 /* no HT-only mode on IA64 */ 98 #endif 99 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */ 100 static inline void disable_acpi(void) { } 101 102 const char *acpi_get_sysname (void); 103 int acpi_request_vector (u32 int_type); 104 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq); 105 106 /* routines for saving/restoring kernel state */ 107 extern int acpi_save_state_mem(void); 108 extern void acpi_restore_state_mem(void); 109 extern unsigned long acpi_wakeup_address; 110 111 /* 112 * Record the cpei override flag and current logical cpu. This is 113 * useful for CPU removal. 114 */ 115 extern unsigned int can_cpei_retarget(void); 116 extern unsigned int is_cpu_cpei_target(unsigned int cpu); 117 extern void set_cpei_target_cpu(unsigned int cpu); 118 extern unsigned int get_cpei_target_cpu(void); 119 extern void prefill_possible_map(void); 120 #ifdef CONFIG_ACPI_HOTPLUG_CPU 121 extern int additional_cpus; 122 #else 123 #define additional_cpus 0 124 #endif 125 126 #ifdef CONFIG_ACPI_NUMA 127 #if MAX_NUMNODES > 256 128 #define MAX_PXM_DOMAINS MAX_NUMNODES 129 #else 130 #define MAX_PXM_DOMAINS (256) 131 #endif 132 extern int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS]; 133 extern int __initdata nid_to_pxm_map[MAX_NUMNODES]; 134 #endif 135 136 static inline bool arch_has_acpi_pdc(void) { return true; } 137 static inline void arch_acpi_set_pdc_bits(u32 *buf) 138 { 139 buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP; 140 } 141 142 #define acpi_unlazy_tlb(x) 143 144 #ifdef CONFIG_ACPI_NUMA 145 extern cpumask_t early_cpu_possible_map; 146 #define for_each_possible_early_cpu(cpu) \ 147 for_each_cpu_mask((cpu), early_cpu_possible_map) 148 149 static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus) 150 { 151 int low_cpu, high_cpu; 152 int cpu; 153 int next_nid = 0; 154 155 low_cpu = cpus_weight(early_cpu_possible_map); 156 157 high_cpu = max(low_cpu, min_cpus); 158 high_cpu = min(high_cpu + reserve_cpus, NR_CPUS); 159 160 for (cpu = low_cpu; cpu < high_cpu; cpu++) { 161 cpu_set(cpu, early_cpu_possible_map); 162 if (node_cpuid[cpu].nid == NUMA_NO_NODE) { 163 node_cpuid[cpu].nid = next_nid; 164 next_nid++; 165 if (next_nid >= num_online_nodes()) 166 next_nid = 0; 167 } 168 } 169 } 170 #endif /* CONFIG_ACPI_NUMA */ 171 172 #endif /*__KERNEL__*/ 173 174 #endif /*_ASM_ACPI_H*/ 175