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
18 typedef u64 phys_cpuid_t;
19 #define PHYS_CPUID_INVALID INVALID_HARTID
20
21 /* ACPI table mapping after acpi_permanent_mmap is set */
22 void __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 */
26 extern int acpi_disabled;
27 extern int acpi_noirq;
28 extern int acpi_pci_disabled;
29
disable_acpi(void)30 static inline void disable_acpi(void)
31 {
32 acpi_disabled = 1;
33 acpi_pci_disabled = 1;
34 acpi_noirq = 1;
35 }
36
enable_acpi(void)37 static 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 */
acpi_has_cpu_in_madt(void)55 static inline bool acpi_has_cpu_in_madt(void)
56 {
57 return true;
58 }
59
arch_fix_phys_package_id(int num,u32 slot)60 static inline void arch_fix_phys_package_id(int num, u32 slot) { }
61
62 void acpi_init_rintc_map(void);
63 struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu);
64 u32 get_acpi_id_for_cpu(int cpu);
65 int acpi_get_riscv_isa(struct acpi_table_header *table,
66 unsigned int cpu, const char **isa);
67
acpi_numa_get_nid(unsigned int cpu)68 static inline int acpi_numa_get_nid(unsigned int cpu) { return NUMA_NO_NODE; }
69 #else
acpi_init_rintc_map(void)70 static inline void acpi_init_rintc_map(void) { }
acpi_cpu_get_madt_rintc(int cpu)71 static inline struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu)
72 {
73 return NULL;
74 }
75
acpi_get_riscv_isa(struct acpi_table_header * table,unsigned int cpu,const char ** isa)76 static inline int acpi_get_riscv_isa(struct acpi_table_header *table,
77 unsigned int cpu, const char **isa)
78 {
79 return -EINVAL;
80 }
81
82 #endif /* CONFIG_ACPI */
83
84 #endif /*_ASM_ACPI_H*/
85