Commit | Line | Data |
---|---|---|
37655163 AS |
1 | /* |
2 | * Copyright (C) 2013-2014, Linaro Ltd. | |
3 | * Author: Al Stone <al.stone@linaro.org> | |
4 | * Author: Graeme Gregory <graeme.gregory@linaro.org> | |
5 | * Author: Hanjun Guo <hanjun.guo@linaro.org> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation; | |
10 | */ | |
11 | ||
12 | #ifndef _ASM_ACPI_H | |
13 | #define _ASM_ACPI_H | |
14 | ||
bff60792 MR |
15 | #include <linux/mm.h> |
16 | #include <linux/psci.h> | |
d60fc389 | 17 | |
020295b4 HG |
18 | #include <asm/cputype.h> |
19 | #include <asm/smp_plat.h> | |
652261a7 | 20 | |
b6cfb277 AS |
21 | /* Macros for consistency checks of the GICC subtable of MADT */ |
22 | #define ACPI_MADT_GICC_LENGTH \ | |
23 | (acpi_gbl_FADT.header.revision < 6 ? 76 : 80) | |
24 | ||
25 | #define BAD_MADT_GICC_ENTRY(entry, end) \ | |
26 | (!(entry) || (unsigned long)(entry) + sizeof(*(entry)) > (end) || \ | |
27 | (entry)->header.length != ACPI_MADT_GICC_LENGTH) | |
28 | ||
37655163 AS |
29 | /* Basic configuration for ACPI */ |
30 | #ifdef CONFIG_ACPI | |
652261a7 MS |
31 | /* ACPI table mapping after acpi_gbl_permanent_mmap is set */ |
32 | static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys, | |
33 | acpi_size size) | |
34 | { | |
35 | if (!page_is_ram(phys >> PAGE_SHIFT)) | |
36 | return ioremap(phys, size); | |
37 | ||
38 | return ioremap_cache(phys, size); | |
39 | } | |
40 | #define acpi_os_ioremap acpi_os_ioremap | |
41 | ||
020295b4 HG |
42 | typedef u64 phys_cpuid_t; |
43 | #define PHYS_CPUID_INVALID INVALID_HWID | |
44 | ||
37655163 AS |
45 | #define acpi_strict 1 /* No out-of-spec workarounds on ARM64 */ |
46 | extern int acpi_disabled; | |
47 | extern int acpi_noirq; | |
48 | extern int acpi_pci_disabled; | |
49 | ||
50 | static inline void disable_acpi(void) | |
51 | { | |
52 | acpi_disabled = 1; | |
53 | acpi_pci_disabled = 1; | |
54 | acpi_noirq = 1; | |
55 | } | |
56 | ||
b10d79f7 AS |
57 | static inline void enable_acpi(void) |
58 | { | |
59 | acpi_disabled = 0; | |
60 | acpi_pci_disabled = 0; | |
61 | acpi_noirq = 0; | |
62 | } | |
63 | ||
020295b4 HG |
64 | /* |
65 | * The ACPI processor driver for ACPI core code needs this macro | |
66 | * to find out this cpu was already mapped (mapping from CPU hardware | |
67 | * ID to CPU logical ID) or not. | |
68 | */ | |
69 | #define cpu_physical_id(cpu) cpu_logical_map(cpu) | |
70 | ||
37655163 AS |
71 | /* |
72 | * It's used from ACPI core in kdump to boot UP system with SMP kernel, | |
73 | * with this check the ACPI core will not override the CPU index | |
74 | * obtained from GICC with 0 and not print some error message as well. | |
75 | * Since MADT must provide at least one GICC structure for GIC | |
76 | * initialization, CPU will be always available in MADT on ARM64. | |
77 | */ | |
78 | static inline bool acpi_has_cpu_in_madt(void) | |
79 | { | |
80 | return true; | |
81 | } | |
82 | ||
83 | static inline void arch_fix_phys_package_id(int num, u32 slot) { } | |
fccb9a81 | 84 | void __init acpi_init_cpus(void); |
37655163 | 85 | |
7c59a3df | 86 | #else |
fccb9a81 | 87 | static inline void acpi_init_cpus(void) { } |
37655163 AS |
88 | #endif /* CONFIG_ACPI */ |
89 | ||
5e89c55e LP |
90 | #ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL |
91 | bool acpi_parking_protocol_valid(int cpu); | |
92 | void __init | |
93 | acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor); | |
94 | #else | |
95 | static inline bool acpi_parking_protocol_valid(int cpu) { return false; } | |
96 | static inline void | |
97 | acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor) | |
98 | {} | |
99 | #endif | |
100 | ||
0f078336 LP |
101 | static inline const char *acpi_get_enable_method(int cpu) |
102 | { | |
5e89c55e LP |
103 | if (acpi_psci_present()) |
104 | return "psci"; | |
105 | ||
106 | if (acpi_parking_protocol_valid(cpu)) | |
107 | return "parking-protocol"; | |
108 | ||
109 | return NULL; | |
0f078336 | 110 | } |
89e44b51 JZZ |
111 | |
112 | #ifdef CONFIG_ACPI_APEI | |
113 | pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr); | |
114 | #endif | |
115 | ||
37655163 | 116 | #endif /*_ASM_ACPI_H*/ |