1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 1999 VA Linux Systems 4 * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> 5 * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com> 6 * Copyright (C) 2001,2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> 7 */ 8 9 #ifndef _ASM_ACPI_H 10 #define _ASM_ACPI_H 11 12 #ifdef __KERNEL__ 13 14 #include <acpi/pdc_intel.h> 15 16 #include <linux/init.h> 17 #include <linux/numa.h> 18 #include <asm/numa.h> 19 20 #ifdef CONFIG_ACPI 21 extern int acpi_lapic; 22 #define acpi_disabled 0 /* ACPI always enabled on IA64 */ 23 #define acpi_noirq 0 /* ACPI always enabled on IA64 */ 24 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */ 25 #define acpi_strict 1 /* no ACPI spec workarounds on IA64 */ 26 27 static inline bool acpi_has_cpu_in_madt(void) 28 { 29 return !!acpi_lapic; 30 } 31 #endif 32 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */ 33 static inline void disable_acpi(void) { } 34 35 #ifdef CONFIG_IA64_GENERIC 36 const char *acpi_get_sysname (void); 37 #else 38 static inline const char *acpi_get_sysname (void) 39 { 40 # if defined (CONFIG_IA64_HP_SIM) 41 return "hpsim"; 42 # elif defined (CONFIG_IA64_HP_ZX1) 43 return "hpzx1"; 44 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) 45 return "hpzx1_swiotlb"; 46 # elif defined (CONFIG_IA64_SGI_UV) 47 return "uv"; 48 # elif defined (CONFIG_IA64_DIG) 49 return "dig"; 50 # elif defined(CONFIG_IA64_DIG_VTD) 51 return "dig_vtd"; 52 # else 53 # error Unknown platform. Fix acpi.c. 54 # endif 55 } 56 #endif 57 int acpi_request_vector (u32 int_type); 58 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq); 59 60 /* Low-level suspend routine. */ 61 extern int acpi_suspend_lowlevel(void); 62 63 extern unsigned long acpi_wakeup_address; 64 65 /* 66 * Record the cpei override flag and current logical cpu. This is 67 * useful for CPU removal. 68 */ 69 extern unsigned int can_cpei_retarget(void); 70 extern unsigned int is_cpu_cpei_target(unsigned int cpu); 71 extern void set_cpei_target_cpu(unsigned int cpu); 72 extern unsigned int get_cpei_target_cpu(void); 73 extern void prefill_possible_map(void); 74 #ifdef CONFIG_ACPI_HOTPLUG_CPU 75 extern int additional_cpus; 76 #else 77 #define additional_cpus 0 78 #endif 79 80 #ifdef CONFIG_ACPI_NUMA 81 #if MAX_NUMNODES > 256 82 #define MAX_PXM_DOMAINS MAX_NUMNODES 83 #else 84 #define MAX_PXM_DOMAINS (256) 85 #endif 86 extern int pxm_to_nid_map[MAX_PXM_DOMAINS]; 87 extern int __initdata nid_to_pxm_map[MAX_NUMNODES]; 88 #endif 89 90 static inline bool arch_has_acpi_pdc(void) { return true; } 91 static inline void arch_acpi_set_pdc_bits(u32 *buf) 92 { 93 buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP; 94 } 95 96 #define acpi_unlazy_tlb(x) 97 98 #ifdef CONFIG_ACPI_NUMA 99 extern cpumask_t early_cpu_possible_map; 100 #define for_each_possible_early_cpu(cpu) \ 101 for_each_cpu((cpu), &early_cpu_possible_map) 102 103 static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus) 104 { 105 int low_cpu, high_cpu; 106 int cpu; 107 int next_nid = 0; 108 109 low_cpu = cpumask_weight(&early_cpu_possible_map); 110 111 high_cpu = max(low_cpu, min_cpus); 112 high_cpu = min(high_cpu + reserve_cpus, NR_CPUS); 113 114 for (cpu = low_cpu; cpu < high_cpu; cpu++) { 115 cpumask_set_cpu(cpu, &early_cpu_possible_map); 116 if (node_cpuid[cpu].nid == NUMA_NO_NODE) { 117 node_cpuid[cpu].nid = next_nid; 118 next_nid++; 119 if (next_nid >= num_online_nodes()) 120 next_nid = 0; 121 } 122 } 123 } 124 125 extern void acpi_numa_fixup(void); 126 127 #endif /* CONFIG_ACPI_NUMA */ 128 129 #endif /*__KERNEL__*/ 130 131 #endif /*_ASM_ACPI_H*/ 132