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a91a9ffbd3
Enable ACPI core for RISC-V after adding architecture-specific interfaces and header files required to build the ACPI core. 1) Couple of header files are required unconditionally by the ACPI core. Add empty acenv.h and cpu.h header files. 2) If CONFIG_PCI is enabled, a few PCI related interfaces need to be provided by the architecture. Define dummy interfaces for now so that build succeeds. Actual implementation will be added when PCI support is added for ACPI along with external interrupt controller support. 3) A few globals and memory mapping related functions specific to the architecture need to be provided. Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Link: https://lore.kernel.org/r/20230515054928.2079268-7-sunilvl@ventanamicro.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2013-2014, Linaro Ltd.
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* Author: Al Stone <al.stone@linaro.org>
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* Author: Graeme Gregory <graeme.gregory@linaro.org>
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* Author: Hanjun Guo <hanjun.guo@linaro.org>
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*
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* Copyright (C) 2021-2023, Ventana Micro Systems Inc.
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* Author: Sunil V L <sunilvl@ventanamicro.com>
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*/
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#ifndef _ASM_ACPI_H
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#define _ASM_ACPI_H
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/* Basic configuration for ACPI */
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#ifdef CONFIG_ACPI
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/* ACPI table mapping after acpi_permanent_mmap is set */
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void *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
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#define acpi_os_ioremap acpi_os_ioremap
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#define acpi_strict 1 /* No out-of-spec workarounds on RISC-V */
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extern int acpi_disabled;
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extern int acpi_noirq;
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extern int acpi_pci_disabled;
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static inline void disable_acpi(void)
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{
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acpi_disabled = 1;
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acpi_pci_disabled = 1;
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acpi_noirq = 1;
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}
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static inline void enable_acpi(void)
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{
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acpi_disabled = 0;
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acpi_pci_disabled = 0;
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acpi_noirq = 0;
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}
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/*
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* The ACPI processor driver for ACPI core code needs this macro
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* to find out whether this cpu was already mapped (mapping from CPU hardware
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* ID to CPU logical ID) or not.
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*/
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#define cpu_physical_id(cpu) cpuid_to_hartid_map(cpu)
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/*
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* Since MADT must provide at least one RINTC structure, the
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* CPU will be always available in MADT on RISC-V.
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*/
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static inline bool acpi_has_cpu_in_madt(void)
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{
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return true;
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}
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static inline void arch_fix_phys_package_id(int num, u32 slot) { }
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#endif /* CONFIG_ACPI */
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#endif /*_ASM_ACPI_H*/
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