projects / linux-2.6-block.git / blame
| 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 | ||
| 652261a7 | 15 | #include <linux/mm.h> |
| d60fc389 TN |
16 | #include <linux/irqchip/arm-gic-acpi.h> |
| 17 | ||
| 020295b4 | 18 | #include <asm/cputype.h> |
| c5a13305 | 19 | #include <asm/psci.h> |
| 020295b4 | 20 | #include <asm/smp_plat.h> |
| 652261a7 | 21 | |
| b6cfb277 AS |
22 | /* Macros for consistency checks of the GICC subtable of MADT */ |
| 23 | #define ACPI_MADT_GICC_LENGTH \ | |
| 24 | (acpi_gbl_FADT.header.revision < 6 ? 76 : 80) | |
| 25 | ||
| 26 | #define BAD_MADT_GICC_ENTRY(entry, end) \ | |
| 27 | (!(entry) || (unsigned long)(entry) + sizeof(*(entry)) > (end) || \ | |
| 28 | (entry)->header.length != ACPI_MADT_GICC_LENGTH) | |
| 29 | ||
| 37655163 AS |
30 | /* Basic configuration for ACPI */ |
| 31 | #ifdef CONFIG_ACPI | |
| 652261a7 MS |
32 | /* ACPI table mapping after acpi_gbl_permanent_mmap is set */ |
| 33 | static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys, | |
| 34 | acpi_size size) | |
| 35 | { | |
| 36 | if (!page_is_ram(phys >> PAGE_SHIFT)) | |
| 37 | return ioremap(phys, size); | |
| 38 | ||
| 39 | return ioremap_cache(phys, size); | |
| 40 | } | |
| 41 | #define acpi_os_ioremap acpi_os_ioremap | |
| 42 | ||
| 020295b4 HG |
43 | typedef u64 phys_cpuid_t; |
| 44 | #define PHYS_CPUID_INVALID INVALID_HWID | |
| 45 | ||
| 37655163 AS |
46 | #define acpi_strict 1 /* No out-of-spec workarounds on ARM64 */ |
| 47 | extern int acpi_disabled; | |
| 48 | extern int acpi_noirq; | |
| 49 | extern int acpi_pci_disabled; | |
| 50 | ||
| 51 | static inline void disable_acpi(void) | |
| 52 | { | |
| 53 | acpi_disabled = 1; | |
| 54 | acpi_pci_disabled = 1; | |
| 55 | acpi_noirq = 1; | |
| 56 | } | |
| 57 | ||
| b10d79f7 AS |
58 | static inline void enable_acpi(void) |
| 59 | { | |
| 60 | acpi_disabled = 0; | |
| 61 | acpi_pci_disabled = 0; | |
| 62 | acpi_noirq = 0; | |
| 63 | } | |
| 64 | ||
| 020295b4 HG |
65 | /* |
| 66 | * The ACPI processor driver for ACPI core code needs this macro | |
| 67 | * to find out this cpu was already mapped (mapping from CPU hardware | |
| 68 | * ID to CPU logical ID) or not. | |
| 69 | */ | |
| 70 | #define cpu_physical_id(cpu) cpu_logical_map(cpu) | |
| 71 | ||
| 37655163 AS |
72 | /* |
| 73 | * It's used from ACPI core in kdump to boot UP system with SMP kernel, | |
| 74 | * with this check the ACPI core will not override the CPU index | |
| 75 | * obtained from GICC with 0 and not print some error message as well. | |
| 76 | * Since MADT must provide at least one GICC structure for GIC | |
| 77 | * initialization, CPU will be always available in MADT on ARM64. | |
| 78 | */ | |
| 79 | static inline bool acpi_has_cpu_in_madt(void) | |
| 80 | { | |
| 81 | return true; | |
| 82 | } | |
| 83 | ||
| 84 | static inline void arch_fix_phys_package_id(int num, u32 slot) { } | |
| fccb9a81 | 85 | void __init acpi_init_cpus(void); |
| 37655163 | 86 | |
| 7c59a3df | 87 | #else |
| fccb9a81 | 88 | static inline void acpi_init_cpus(void) { } |
| 37655163 AS |
89 | #endif /* CONFIG_ACPI */ |
| 90 | ||
| 0f078336 LP |
91 | static inline const char *acpi_get_enable_method(int cpu) |
| 92 | { | |
| 93 | return acpi_psci_present() ? "psci" : NULL; | |
| 94 | } | |
| 37655163 | 95 | #endif /*_ASM_ACPI_H*/ |