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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/riscv/include/asm/acpi.h
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/* 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 <[email protected]>

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 *	Author: Graeme Gregory <[email protected]>

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 *	Author: Hanjun Guo <[email protected]>

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 *

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 *  Copyright (C) 2021-2023, Ventana Micro Systems Inc.

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 *	Author: Sunil V L <[email protected]>

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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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typedef u64 phys_cpuid_t;

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#define PHYS_CPUID_INVALID INVALID_HARTID

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/* ACPI table mapping after acpi_permanent_mmap is set */

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void __iomem *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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void acpi_init_rintc_map(void);

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struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu);

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static inline u32 get_acpi_id_for_cpu(int cpu)

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{

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	return acpi_cpu_get_madt_rintc(cpu)->uid;

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}

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int acpi_get_riscv_isa(struct acpi_table_header *table,

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		       unsigned int cpu, const char **isa);

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void acpi_get_cbo_block_size(struct acpi_table_header *table, u32 *cbom_size,

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			     u32 *cboz_size, u32 *cbop_size);

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#else

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static inline void acpi_init_rintc_map(void) { }

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static inline struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu)

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{

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	return NULL;

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}

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static inline int acpi_get_riscv_isa(struct acpi_table_header *table,

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				     unsigned int cpu, const char **isa)

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{

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	return -EINVAL;

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}

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static inline void acpi_get_cbo_block_size(struct acpi_table_header *table,

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					   u32 *cbom_size, u32 *cboz_size,

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					   u32 *cbop_size) { }

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#endif /* CONFIG_ACPI */

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#ifdef CONFIG_ACPI_NUMA

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void acpi_map_cpus_to_nodes(void);

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#else

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static inline void acpi_map_cpus_to_nodes(void) { }

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#endif /* CONFIG_ACPI_NUMA */

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#endif /*_ASM_ACPI_H*/

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