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*/ 195