projects / people / arne_f / kernel.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 MS |
15 | #include <linux/mm.h> |
| 16 | ||
| 37655163 AS |
17 | /* Basic configuration for ACPI */ |
| 18 | #ifdef CONFIG_ACPI | |
| 652261a7 MS |
19 | /* ACPI table mapping after acpi_gbl_permanent_mmap is set */ |
| 20 | static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys, | |
| 21 | acpi_size size) | |
| 22 | { | |
| 23 | if (!page_is_ram(phys >> PAGE_SHIFT)) | |
| 24 | return ioremap(phys, size); | |
| 25 | ||
| 26 | return ioremap_cache(phys, size); | |
| 27 | } | |
| 28 | #define acpi_os_ioremap acpi_os_ioremap | |
| 29 | ||
| 37655163 AS |
30 | #define acpi_strict 1 /* No out-of-spec workarounds on ARM64 */ |
| 31 | extern int acpi_disabled; | |
| 32 | extern int acpi_noirq; | |
| 33 | extern int acpi_pci_disabled; | |
| 34 | ||
| 7c59a3df GG |
35 | /* 1 to indicate PSCI 0.2+ is implemented */ |
| 36 | static inline bool acpi_psci_present(void) | |
| 37 | { | |
| 38 | return acpi_gbl_FADT.arm_boot_flags & ACPI_FADT_PSCI_COMPLIANT; | |
| 39 | } | |
| 40 | ||
| 41 | /* 1 to indicate HVC must be used instead of SMC as the PSCI conduit */ | |
| 42 | static inline bool acpi_psci_use_hvc(void) | |
| 43 | { | |
| 44 | return acpi_gbl_FADT.arm_boot_flags & ACPI_FADT_PSCI_USE_HVC; | |
| 45 | } | |
| 46 | ||
| 37655163 AS |
47 | static inline void disable_acpi(void) |
| 48 | { | |
| 49 | acpi_disabled = 1; | |
| 50 | acpi_pci_disabled = 1; | |
| 51 | acpi_noirq = 1; | |
| 52 | } | |
| 53 | ||
| b10d79f7 AS |
54 | static inline void enable_acpi(void) |
| 55 | { | |
| 56 | acpi_disabled = 0; | |
| 57 | acpi_pci_disabled = 0; | |
| 58 | acpi_noirq = 0; | |
| 59 | } | |
| 60 | ||
| 37655163 AS |
61 | /* |
| 62 | * It's used from ACPI core in kdump to boot UP system with SMP kernel, | |
| 63 | * with this check the ACPI core will not override the CPU index | |
| 64 | * obtained from GICC with 0 and not print some error message as well. | |
| 65 | * Since MADT must provide at least one GICC structure for GIC | |
| 66 | * initialization, CPU will be always available in MADT on ARM64. | |
| 67 | */ | |
| 68 | static inline bool acpi_has_cpu_in_madt(void) | |
| 69 | { | |
| 70 | return true; | |
| 71 | } | |
| 72 | ||
| 73 | static inline void arch_fix_phys_package_id(int num, u32 slot) { } | |
| fccb9a81 | 74 | void __init acpi_init_cpus(void); |
| 37655163 | 75 | |
| 7c59a3df GG |
76 | #else |
| 77 | static inline bool acpi_psci_present(void) { return false; } | |
| 78 | static inline bool acpi_psci_use_hvc(void) { return false; } | |
| fccb9a81 | 79 | static inline void acpi_init_cpus(void) { } |
| 37655163 AS |
80 | #endif /* CONFIG_ACPI */ |
| 81 | ||
| 82 | #endif /*_ASM_ACPI_H*/ |