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_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(facs, Acq) \ 86 ((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock)) 87 88 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \ 89 ((Acq) = ia64_acpi_release_global_lock(&facs->global_lock)) 90 91 #ifdef CONFIG_ACPI 92 #define acpi_disabled 0 /* ACPI always enabled on IA64 */ 93 #define acpi_noirq 0 /* ACPI always enabled on IA64 */ 94 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */ 95 #define acpi_strict 1 /* no ACPI spec workarounds on IA64 */ 96 #endif 97 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */ 98 static inline void disable_acpi(void) { } 99 static inline void pci_acpi_crs_quirks(void) { } 100 101 #ifdef CONFIG_IA64_GENERIC 102 const char *acpi_get_sysname (void); 103 #else 104 static inline const char *acpi_get_sysname (void) 105 { 106 # if defined (CONFIG_IA64_HP_SIM) 107 return "hpsim"; 108 # elif defined (CONFIG_IA64_HP_ZX1) 109 return "hpzx1"; 110 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) 111 return "hpzx1_swiotlb"; 112 # elif defined (CONFIG_IA64_SGI_SN2) 113 return "sn2"; 114 # elif defined (CONFIG_IA64_SGI_UV) 115 return "uv"; 116 # elif defined (CONFIG_IA64_DIG) 117 return "dig"; 118 # elif defined (CONFIG_IA64_XEN_GUEST) 119 return "xen"; 120 # elif defined(CONFIG_IA64_DIG_VTD) 121 return "dig_vtd"; 122 # else 123 # error Unknown platform. Fix acpi.c. 124 # endif 125 } 126 #endif 127 int acpi_request_vector (u32 int_type); 128 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq); 129 130 /* Low-level suspend routine. */ 131 extern int acpi_suspend_lowlevel(void); 132 133 extern unsigned long acpi_wakeup_address; 134 135 /* 136 * Record the cpei override flag and current logical cpu. This is 137 * useful for CPU removal. 138 */ 139 extern unsigned int can_cpei_retarget(void); 140 extern unsigned int is_cpu_cpei_target(unsigned int cpu); 141 extern void set_cpei_target_cpu(unsigned int cpu); 142 extern unsigned int get_cpei_target_cpu(void); 143 extern void prefill_possible_map(void); 144 #ifdef CONFIG_ACPI_HOTPLUG_CPU 145 extern int additional_cpus; 146 #else 147 #define additional_cpus 0 148 #endif 149 150 #ifdef CONFIG_ACPI_NUMA 151 #if MAX_NUMNODES > 256 152 #define MAX_PXM_DOMAINS MAX_NUMNODES 153 #else 154 #define MAX_PXM_DOMAINS (256) 155 #endif 156 extern int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS]; 157 extern int __initdata nid_to_pxm_map[MAX_NUMNODES]; 158 #endif 159 160 static inline bool arch_has_acpi_pdc(void) { return true; } 161 static inline void arch_acpi_set_pdc_bits(u32 *buf) 162 { 163 buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP; 164 } 165 166 #define acpi_unlazy_tlb(x) 167 168 #ifdef CONFIG_ACPI_NUMA 169 extern cpumask_t early_cpu_possible_map; 170 #define for_each_possible_early_cpu(cpu) \ 171 for_each_cpu_mask((cpu), early_cpu_possible_map) 172 173 static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus) 174 { 175 int low_cpu, high_cpu; 176 int cpu; 177 int next_nid = 0; 178 179 low_cpu = cpus_weight(early_cpu_possible_map); 180 181 high_cpu = max(low_cpu, min_cpus); 182 high_cpu = min(high_cpu + reserve_cpus, NR_CPUS); 183 184 for (cpu = low_cpu; cpu < high_cpu; cpu++) { 185 cpu_set(cpu, early_cpu_possible_map); 186 if (node_cpuid[cpu].nid == NUMA_NO_NODE) { 187 node_cpuid[cpu].nid = next_nid; 188 next_nid++; 189 if (next_nid >= num_online_nodes()) 190 next_nid = 0; 191 } 192 } 193 } 194 #endif /* CONFIG_ACPI_NUMA */ 195 196 #endif /*__KERNEL__*/ 197 198 #endif /*_ASM_ACPI_H*/ 199