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 SBI_EXT_DBCN = 0x4442434E, 32 SBI_EXT_SUSP = 0x53555350, 33 SBI_EXT_CPPC = 0x43505043, 34 SBI_EXT_NACL = 0x4E41434C, 35 SBI_EXT_STA = 0x535441, 36 SBI_EXT_SSE = 0x535345, 37 SBI_EXT_FWFT = 0x46574654, 38 SBI_EXT_DBTR = 0x44425452, 39 SBI_EXT_MPXY = 0x4D505859, 40 }; 41 42 enum sbi_ext_base_fid { 43 SBI_EXT_BASE_GET_SPEC_VERSION = 0, 44 SBI_EXT_BASE_GET_IMP_ID, 45 SBI_EXT_BASE_GET_IMP_VERSION, 46 SBI_EXT_BASE_PROBE_EXT, 47 SBI_EXT_BASE_GET_MVENDORID, 48 SBI_EXT_BASE_GET_MARCHID, 49 SBI_EXT_BASE_GET_MIMPID, 50 }; 51 52 enum sbi_ext_time_fid { 53 SBI_EXT_TIME_SET_TIMER = 0, 54 }; 55 56 enum sbi_ext_ipi_fid { 57 SBI_EXT_IPI_SEND_IPI = 0, 58 }; 59 60 enum sbi_ext_rfence_fid { 61 SBI_EXT_RFENCE_REMOTE_FENCE_I = 0, 62 SBI_EXT_RFENCE_REMOTE_SFENCE_VMA, 63 SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID, 64 SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID, 65 SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA, 66 SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID, 67 SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA, 68 }; 69 70 enum sbi_ext_hsm_fid { 71 SBI_EXT_HSM_HART_START = 0, 72 SBI_EXT_HSM_HART_STOP, 73 SBI_EXT_HSM_HART_STATUS, 74 SBI_EXT_HSM_HART_SUSPEND, 75 }; 76 77 enum sbi_hsm_hart_status { 78 SBI_HSM_HART_STATUS_STARTED = 0, 79 SBI_HSM_HART_STATUS_STOPPED, 80 SBI_HSM_HART_STATUS_START_PENDING, 81 SBI_HSM_HART_STATUS_STOP_PENDING, 82 SBI_HSM_HART_STATUS_SUSPEND_PENDING, 83 SBI_HSM_HART_STATUS_RESUME_PENDING, 84 }; 85 86 enum sbi_ext_srst_fid { 87 SBI_EXT_SRST_RESET = 0, 88 }; 89 90 enum sbi_srst_reset_type { 91 SBI_SRST_RESET_TYPE_SHUTDOWN = 0, 92 SBI_SRST_RESET_TYPE_COLD_REBOOT, 93 SBI_SRST_RESET_TYPE_WARM_REBOOT, 94 }; 95 96 enum sbi_srst_reset_reason { 97 SBI_SRST_RESET_REASON_NONE = 0, 98 SBI_SRST_RESET_REASON_SYS_FAILURE, 99 }; 100 101 enum sbi_ext_dbcn_fid { 102 SBI_EXT_DBCN_CONSOLE_WRITE = 0, 103 SBI_EXT_DBCN_CONSOLE_READ, 104 SBI_EXT_DBCN_CONSOLE_WRITE_BYTE, 105 }; 106 107 #ifdef CONFIG_SBI_V01 108 #define SBI_EXT_SET_TIMER SBI_EXT_0_1_SET_TIMER 109 #define SBI_FID_SET_TIMER 0 110 #define SBI_EXT_SEND_IPI SBI_EXT_0_1_SEND_IPI 111 #define SBI_FID_SEND_IPI 0 112 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_0_1_REMOTE_FENCE_I 113 #define SBI_FID_REMOTE_FENCE_I 0 114 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_0_1_REMOTE_SFENCE_VMA 115 #define SBI_FID_REMOTE_SFENCE_VMA 0 116 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID 117 #define SBI_FID_REMOTE_SFENCE_VMA_ASID 0 118 #else 119 #define SBI_EXT_SET_TIMER SBI_EXT_TIME 120 #define SBI_FID_SET_TIMER SBI_EXT_TIME_SET_TIMER 121 #define SBI_EXT_SEND_IPI SBI_EXT_IPI 122 #define SBI_FID_SEND_IPI SBI_EXT_IPI_SEND_IPI 123 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_RFENCE 124 #define SBI_FID_REMOTE_FENCE_I SBI_EXT_RFENCE_REMOTE_FENCE_I 125 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_RFENCE 126 #define SBI_FID_REMOTE_SFENCE_VMA SBI_EXT_RFENCE_REMOTE_SFENCE_VMA 127 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE 128 #define SBI_FID_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID 129 #endif 130 131 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 132 #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f 133 #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff 134 135 /* SBI return error codes */ 136 #define SBI_SUCCESS 0 137 #define SBI_ERR_FAILURE -1 138 #define SBI_ERR_NOT_SUPPORTED -2 139 #define SBI_ERR_INVALID_PARAM -3 140 #define SBI_ERR_DENIED -4 141 #define SBI_ERR_INVALID_ADDRESS -5 142 143 struct sbiret { 144 long error; 145 long value; 146 }; 147 148 struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, 149 unsigned long arg1, unsigned long arg2, 150 unsigned long arg3, unsigned long arg4, 151 unsigned long arg5); 152 153 #ifdef CONFIG_SBI_V01 154 void sbi_console_putchar(int ch); 155 int sbi_console_getchar(void); 156 void sbi_clear_ipi(void); 157 void sbi_shutdown(void); 158 void sbi_send_ipi(const unsigned long *hart_mask); 159 void sbi_remote_fence_i(const unsigned long *hart_mask); 160 void sbi_remote_sfence_vma(const unsigned long *hart_mask, 161 unsigned long start, 162 unsigned long size); 163 void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, 164 unsigned long start, 165 unsigned long size, 166 unsigned long asid); 167 #endif 168 void sbi_set_timer(uint64_t stime_value); 169 long sbi_get_spec_version(void); 170 int sbi_get_impl_id(void); 171 int sbi_get_impl_version(long *version); 172 int sbi_probe_extension(int ext); 173 int sbi_get_mvendorid(long *mvendorid); 174 int sbi_get_marchid(long *marchid); 175 int sbi_get_mimpid(long *mimpid); 176 void sbi_srst_reset(unsigned long type, unsigned long reason); 177 int sbi_dbcn_write_byte(unsigned char ch); 178 179 #endif 180