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
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
acpi_has_cpu_in_madt(void)27 static inline bool acpi_has_cpu_in_madt(void)
28 {
29 return !!acpi_lapic;
30 }
31
32 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
disable_acpi(void)33 static inline void disable_acpi(void) { }
34
35 int acpi_request_vector (u32 int_type);
36 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
37
38 /* Low-level suspend routine. */
39 extern int acpi_suspend_lowlevel(void);
40
acpi_get_wakeup_address(void)41 static inline unsigned long acpi_get_wakeup_address(void)
42 {
43 return 0;
44 }
45
46 /*
47 * Record the cpei override flag and current logical cpu. This is
48 * useful for CPU removal.
49 */
50 extern unsigned int can_cpei_retarget(void);
51 extern unsigned int is_cpu_cpei_target(unsigned int cpu);
52 extern void set_cpei_target_cpu(unsigned int cpu);
53 extern unsigned int get_cpei_target_cpu(void);
54 extern void prefill_possible_map(void);
55 #ifdef CONFIG_ACPI_HOTPLUG_CPU
56 extern int additional_cpus;
57 #else
58 #define additional_cpus 0
59 #endif
60
61 #ifdef CONFIG_ACPI_NUMA
62 #if MAX_NUMNODES > 256
63 #define MAX_PXM_DOMAINS MAX_NUMNODES
64 #else
65 #define MAX_PXM_DOMAINS (256)
66 #endif
67 extern int pxm_to_nid_map[MAX_PXM_DOMAINS];
68 extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
69 #endif
70
arch_has_acpi_pdc(void)71 static inline bool arch_has_acpi_pdc(void) { return true; }
arch_acpi_set_pdc_bits(u32 * buf)72 static inline void arch_acpi_set_pdc_bits(u32 *buf)
73 {
74 buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
75 }
76
77 #ifdef CONFIG_ACPI_NUMA
78 extern cpumask_t early_cpu_possible_map;
79 #define for_each_possible_early_cpu(cpu) \
80 for_each_cpu((cpu), &early_cpu_possible_map)
81
per_cpu_scan_finalize(int min_cpus,int reserve_cpus)82 static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus)
83 {
84 int low_cpu, high_cpu;
85 int cpu;
86 int next_nid = 0;
87
88 low_cpu = cpumask_weight(&early_cpu_possible_map);
89
90 high_cpu = max(low_cpu, min_cpus);
91 high_cpu = min(high_cpu + reserve_cpus, NR_CPUS);
92
93 for (cpu = low_cpu; cpu < high_cpu; cpu++) {
94 cpumask_set_cpu(cpu, &early_cpu_possible_map);
95 if (node_cpuid[cpu].nid == NUMA_NO_NODE) {
96 node_cpuid[cpu].nid = next_nid;
97 next_nid++;
98 if (next_nid >= num_online_nodes())
99 next_nid = 0;
100 }
101 }
102 }
103
104 extern void acpi_numa_fixup(void);
105
106 #endif /* CONFIG_ACPI_NUMA */
107
108 #endif /*__KERNEL__*/
109
110 #endif /*_ASM_ACPI_H*/
111