1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2015 Regents of the University of California 4 * Copyright (c) 2020 Western Digital Corporation or its affiliates. 5 * 6 * Taken from Linux arch/riscv/include/asm/sbi.h 7 */ 8 9 #ifndef _ASM_RISCV_SBI_H 10 #define _ASM_RISCV_SBI_H 11 12 #include <linux/types.h> 13 14 enum sbi_ext_id { 15 SBI_EXT_0_1_SET_TIMER = 0x0, 16 SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1, 17 SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2, 18 SBI_EXT_0_1_CLEAR_IPI = 0x3, 19 SBI_EXT_0_1_SEND_IPI = 0x4, 20 SBI_EXT_0_1_REMOTE_FENCE_I = 0x5, 21 SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6, 22 SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7, 23 SBI_EXT_0_1_SHUTDOWN = 0x8, 24 SBI_EXT_BASE = 0x10, 25 SBI_EXT_TIME = 0x54494D45, 26 SBI_EXT_IPI = 0x735049, 27 SBI_EXT_RFENCE = 0x52464E43, 28 SBI_EXT_HSM = 0x48534D, 29 SBI_EXT_SRST = 0x53525354, 30 SBI_EXT_PMU = 0x504D55, 31 }; 32 33 enum sbi_ext_base_fid { 34 SBI_EXT_BASE_GET_SPEC_VERSION = 0, 35 SBI_EXT_BASE_GET_IMP_ID, 36 SBI_EXT_BASE_GET_IMP_VERSION, 37 SBI_EXT_BASE_PROBE_EXT, 38 SBI_EXT_BASE_GET_MVENDORID, 39 SBI_EXT_BASE_GET_MARCHID, 40 SBI_EXT_BASE_GET_MIMPID, 41 }; 42 43 enum sbi_ext_time_fid { 44 SBI_EXT_TIME_SET_TIMER = 0, 45 }; 46 47 enum sbi_ext_ipi_fid { 48 SBI_EXT_IPI_SEND_IPI = 0, 49 }; 50 51 enum sbi_ext_rfence_fid { 52 SBI_EXT_RFENCE_REMOTE_FENCE_I = 0, 53 SBI_EXT_RFENCE_REMOTE_SFENCE_VMA, 54 SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID, 55 SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID, 56 SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA, 57 SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID, 58 SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA, 59 }; 60 61 enum sbi_ext_hsm_fid { 62 SBI_EXT_HSM_HART_START = 0, 63 SBI_EXT_HSM_HART_STOP, 64 SBI_EXT_HSM_HART_STATUS, 65 SBI_EXT_HSM_HART_SUSPEND, 66 }; 67 68 enum sbi_hsm_hart_status { 69 SBI_HSM_HART_STATUS_STARTED = 0, 70 SBI_HSM_HART_STATUS_STOPPED, 71 SBI_HSM_HART_STATUS_START_PENDING, 72 SBI_HSM_HART_STATUS_STOP_PENDING, 73 SBI_HSM_HART_STATUS_SUSPEND_PENDING, 74 SBI_HSM_HART_STATUS_RESUME_PENDING, 75 }; 76 77 enum sbi_ext_srst_fid { 78 SBI_EXT_SRST_RESET = 0, 79 }; 80 81 enum sbi_srst_reset_type { 82 SBI_SRST_RESET_TYPE_SHUTDOWN = 0, 83 SBI_SRST_RESET_TYPE_COLD_REBOOT, 84 SBI_SRST_RESET_TYPE_WARM_REBOOT, 85 }; 86 87 enum sbi_srst_reset_reason { 88 SBI_SRST_RESET_REASON_NONE = 0, 89 SBI_SRST_RESET_REASON_SYS_FAILURE, 90 }; 91 92 #ifdef CONFIG_SBI_V01 93 #define SBI_EXT_SET_TIMER SBI_EXT_0_1_SET_TIMER 94 #define SBI_FID_SET_TIMER 0 95 #define SBI_EXT_SEND_IPI SBI_EXT_0_1_SEND_IPI 96 #define SBI_FID_SEND_IPI 0 97 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_0_1_REMOTE_FENCE_I 98 #define SBI_FID_REMOTE_FENCE_I 0 99 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_0_1_REMOTE_SFENCE_VMA 100 #define SBI_FID_REMOTE_SFENCE_VMA 0 101 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID 102 #define SBI_FID_REMOTE_SFENCE_VMA_ASID 0 103 #else 104 #define SBI_EXT_SET_TIMER SBI_EXT_TIME 105 #define SBI_FID_SET_TIMER SBI_EXT_TIME_SET_TIMER 106 #define SBI_EXT_SEND_IPI SBI_EXT_IPI 107 #define SBI_FID_SEND_IPI SBI_EXT_IPI_SEND_IPI 108 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_RFENCE 109 #define SBI_FID_REMOTE_FENCE_I SBI_EXT_RFENCE_REMOTE_FENCE_I 110 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_RFENCE 111 #define SBI_FID_REMOTE_SFENCE_VMA SBI_EXT_RFENCE_REMOTE_SFENCE_VMA 112 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE 113 #define SBI_FID_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID 114 #endif 115 116 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 117 #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f 118 #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff 119 120 /* SBI return error codes */ 121 #define SBI_SUCCESS 0 122 #define SBI_ERR_FAILURE -1 123 #define SBI_ERR_NOT_SUPPORTED -2 124 #define SBI_ERR_INVALID_PARAM -3 125 #define SBI_ERR_DENIED -4 126 #define SBI_ERR_INVALID_ADDRESS -5 127 128 struct sbiret { 129 long error; 130 long value; 131 }; 132 133 struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, 134 unsigned long arg1, unsigned long arg2, 135 unsigned long arg3, unsigned long arg4, 136 unsigned long arg5); 137 138 #ifdef CONFIG_SBI_V01 139 void sbi_console_putchar(int ch); 140 int sbi_console_getchar(void); 141 void sbi_clear_ipi(void); 142 void sbi_shutdown(void); 143 void sbi_send_ipi(const unsigned long *hart_mask); 144 void sbi_remote_fence_i(const unsigned long *hart_mask); 145 void sbi_remote_sfence_vma(const unsigned long *hart_mask, 146 unsigned long start, 147 unsigned long size); 148 void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, 149 unsigned long start, 150 unsigned long size, 151 unsigned long asid); 152 #endif 153 void sbi_set_timer(uint64_t stime_value); 154 long sbi_get_spec_version(void); 155 int sbi_get_impl_id(void); 156 int sbi_get_impl_version(long *version); 157 int sbi_probe_extension(int ext); 158 int sbi_get_mvendorid(long *mvendorid); 159 int sbi_get_marchid(long *marchid); 160 int sbi_get_mimpid(long *mimpid); 161 void sbi_srst_reset(unsigned long type, unsigned long reason); 162 163 #endif 164