arch/riscv/include/asm/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
  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
  30 static inline void disable_acpi(void)
  31 {
  32         acpi_disabled = 1;
  33         acpi_pci_disabled = 1;
  34         acpi_noirq = 1;
  35 }
  36
  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  */
  55 static inline bool acpi_has_cpu_in_madt(void)
  56 {
  57         return true;
  58 }
  59
  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 static inline u32 get_acpi_id_for_cpu(int cpu)
  65 {
  66         return acpi_cpu_get_madt_rintc(cpu)->uid;
  67 }
  68
  69 int acpi_get_riscv_isa(struct acpi_table_header *table,
  70                        unsigned int cpu, const char **isa);
  71
  72 void acpi_get_cbo_block_size(struct acpi_table_header *table, u32 *cbom_size,
  73                              u32 *cboz_size, u32 *cbop_size);
  74 #else
  75 static inline void acpi_init_rintc_map(void) { }
  76 static inline struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu)
  77 {
  78         return NULL;
  79 }
  80
  81 static inline int acpi_get_riscv_isa(struct acpi_table_header *table,
  82                                      unsigned int cpu, const char **isa)
  83 {
  84         return -EINVAL;
  85 }
  86
  87 static 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
  94 void acpi_map_cpus_to_nodes(void);
  95 #else
  96 static inline void acpi_map_cpus_to_nodes(void) { }
  97 #endif /* CONFIG_ACPI_NUMA */
  98
  99 #endif /*_ASM_ACPI_H*/