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 }; 31 32 enum sbi_ext_base_fid { 33 SBI_EXT_BASE_GET_SPEC_VERSION = 0, 34 SBI_EXT_BASE_GET_IMP_ID, 35 SBI_EXT_BASE_GET_IMP_VERSION, 36 SBI_EXT_BASE_PROBE_EXT, 37 SBI_EXT_BASE_GET_MVENDORID, 38 SBI_EXT_BASE_GET_MARCHID, 39 SBI_EXT_BASE_GET_MIMPID, 40 }; 41 42 enum sbi_ext_time_fid { 43 SBI_EXT_TIME_SET_TIMER = 0, 44 }; 45 46 enum sbi_ext_ipi_fid { 47 SBI_EXT_IPI_SEND_IPI = 0, 48 }; 49 50 enum sbi_ext_rfence_fid { 51 SBI_EXT_RFENCE_REMOTE_FENCE_I = 0, 52 SBI_EXT_RFENCE_REMOTE_SFENCE_VMA, 53 SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID, 54 SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID, 55 SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA, 56 SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID, 57 SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA, 58 }; 59 60 enum sbi_ext_hsm_fid { 61 SBI_EXT_HSM_HART_START = 0, 62 SBI_EXT_HSM_HART_STOP, 63 SBI_EXT_HSM_HART_STATUS, 64 SBI_EXT_HSM_HART_SUSPEND, 65 }; 66 67 enum sbi_hsm_hart_status { 68 SBI_HSM_HART_STATUS_STARTED = 0, 69 SBI_HSM_HART_STATUS_STOPPED, 70 SBI_HSM_HART_STATUS_START_PENDING, 71 SBI_HSM_HART_STATUS_STOP_PENDING, 72 SBI_HSM_HART_STATUS_SUSPEND_PENDING, 73 SBI_HSM_HART_STATUS_RESUME_PENDING, 74 }; 75 76 enum sbi_ext_srst_fid { 77 SBI_EXT_SRST_RESET = 0, 78 }; 79 80 enum sbi_srst_reset_type { 81 SBI_SRST_RESET_TYPE_SHUTDOWN = 0, 82 SBI_SRST_RESET_TYPE_COLD_REBOOT, 83 SBI_SRST_RESET_TYPE_WARM_REBOOT, 84 }; 85 86 enum sbi_srst_reset_reason { 87 SBI_SRST_RESET_REASON_NONE = 0, 88 SBI_SRST_RESET_REASON_SYS_FAILURE, 89 }; 90 91 #ifdef CONFIG_SBI_V01 92 #define SBI_EXT_SET_TIMER SBI_EXT_0_1_SET_TIMER 93 #define SBI_FID_SET_TIMER 0 94 #define SBI_EXT_SEND_IPI SBI_EXT_0_1_SEND_IPI 95 #define SBI_FID_SEND_IPI 0 96 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_0_1_REMOTE_FENCE_I 97 #define SBI_FID_REMOTE_FENCE_I 0 98 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_0_1_REMOTE_SFENCE_VMA 99 #define SBI_FID_REMOTE_SFENCE_VMA 0 100 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID 101 #define SBI_FID_REMOTE_SFENCE_VMA_ASID 0 102 #else 103 #define SBI_EXT_SET_TIMER SBI_EXT_TIME 104 #define SBI_FID_SET_TIMER SBI_EXT_TIME_SET_TIMER 105 #define SBI_EXT_SEND_IPI SBI_EXT_IPI 106 #define SBI_FID_SEND_IPI SBI_EXT_IPI_SEND_IPI 107 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_RFENCE 108 #define SBI_FID_REMOTE_FENCE_I SBI_EXT_RFENCE_REMOTE_FENCE_I 109 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_RFENCE 110 #define SBI_FID_REMOTE_SFENCE_VMA SBI_EXT_RFENCE_REMOTE_SFENCE_VMA 111 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE 112 #define SBI_FID_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID 113 #endif 114 115 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 116 #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f 117 #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff 118 119 /* SBI return error codes */ 120 #define SBI_SUCCESS 0 121 #define SBI_ERR_FAILURE -1 122 #define SBI_ERR_NOT_SUPPORTED -2 123 #define SBI_ERR_INVALID_PARAM -3 124 #define SBI_ERR_DENIED -4 125 #define SBI_ERR_INVALID_ADDRESS -5 126 127 struct sbiret { 128 long error; 129 long value; 130 }; 131 132 struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, 133 unsigned long arg1, unsigned long arg2, 134 unsigned long arg3, unsigned long arg4, 135 unsigned long arg5); 136 137 #ifdef CONFIG_SBI_V01 138 void sbi_console_putchar(int ch); 139 int sbi_console_getchar(void); 140 void sbi_clear_ipi(void); 141 void sbi_shutdown(void); 142 void sbi_send_ipi(const unsigned long *hart_mask); 143 void sbi_remote_fence_i(const unsigned long *hart_mask); 144 void sbi_remote_sfence_vma(const unsigned long *hart_mask, 145 unsigned long start, 146 unsigned long size); 147 void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, 148 unsigned long start, 149 unsigned long size, 150 unsigned long asid); 151 #endif 152 void sbi_set_timer(uint64_t stime_value); 153 long sbi_get_spec_version(void); 154 int sbi_get_impl_id(void); 155 int sbi_probe_extension(int ext); 156 void sbi_srst_reset(unsigned long type, unsigned long reason); 157 158 #endif 159