acpi.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 *  Copyright (C) 2013-2014, Linaro Ltd.
 4 *	Author: Al Stone <al.stone@linaro.org>
 5 *	Author: Graeme Gregory <graeme.gregory@linaro.org>
 6 *	Author: Hanjun Guo <hanjun.guo@linaro.org>
 7 *
 8 *  Copyright (C) 2021-2023, Ventana Micro Systems Inc.
 9 *	Author: Sunil V L <sunilvl@ventanamicro.com>
10 */
11
12#ifndef _ASM_ACPI_H
13#define _ASM_ACPI_H
14
15/* Basic configuration for ACPI */
16#ifdef CONFIG_ACPI
17
18typedef u64 phys_cpuid_t;
19#define PHYS_CPUID_INVALID INVALID_HARTID
20
21/* ACPI table mapping after acpi_permanent_mmap is set */
22void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
23#define acpi_os_ioremap acpi_os_ioremap
24
25#define acpi_strict 1	/* No out-of-spec workarounds on RISC-V */
26extern int acpi_disabled;
27extern int acpi_noirq;
28extern int acpi_pci_disabled;
29
30static inline void disable_acpi(void)
31{
32	acpi_disabled = 1;
33	acpi_pci_disabled = 1;
34	acpi_noirq = 1;
35}
36
37static inline void enable_acpi(void)
38{
39	acpi_disabled = 0;
40	acpi_pci_disabled = 0;
41	acpi_noirq = 0;
42}
43
44/*
45 * The ACPI processor driver for ACPI core code needs this macro
46 * to find out whether this cpu was already mapped (mapping from CPU hardware
47 * ID to CPU logical ID) or not.
48 */
49#define cpu_physical_id(cpu) cpuid_to_hartid_map(cpu)
50
51/*
52 * Since MADT must provide at least one RINTC structure, the
53 * CPU will be always available in MADT on RISC-V.
54 */
55static inline bool acpi_has_cpu_in_madt(void)
56{
57	return true;
58}
59
60static inline void arch_fix_phys_package_id(int num, u32 slot) { }
61
62void acpi_init_rintc_map(void);
63struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu);
64static inline u32 get_acpi_id_for_cpu(int cpu)
65{
66	return acpi_cpu_get_madt_rintc(cpu)->uid;
67}
68
69int acpi_get_riscv_isa(struct acpi_table_header *table,
70		       unsigned int cpu, const char **isa);
71
72void acpi_get_cbo_block_size(struct acpi_table_header *table, u32 *cbom_size,
73			     u32 *cboz_size, u32 *cbop_size);
74#else
75static inline void acpi_init_rintc_map(void) { }
76static inline struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu)
77{
78	return NULL;
79}
80
81static inline int acpi_get_riscv_isa(struct acpi_table_header *table,
82				     unsigned int cpu, const char **isa)
83{
84	return -EINVAL;
85}
86
87static inline void acpi_get_cbo_block_size(struct acpi_table_header *table,
88					   u32 *cbom_size, u32 *cboz_size,
89					   u32 *cbop_size) { }
90
91#endif /* CONFIG_ACPI */
92
93#ifdef CONFIG_ACPI_NUMA
94void acpi_map_cpus_to_nodes(void);
95#else
96static inline void acpi_map_cpus_to_nodes(void) { }
97#endif /* CONFIG_ACPI_NUMA */
98
99#endif /*_ASM_ACPI_H*/