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 #ifdef CONFIG_SBI_V01 16 SBI_EXT_0_1_SET_TIMER = 0x0, 17 SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1, 18 SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2, 19 SBI_EXT_0_1_CLEAR_IPI = 0x3, 20 SBI_EXT_0_1_SEND_IPI = 0x4, 21 SBI_EXT_0_1_REMOTE_FENCE_I = 0x5, 22 SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6, 23 SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7, 24 SBI_EXT_0_1_SHUTDOWN = 0x8, 25 #endif 26 SBI_EXT_BASE = 0x10, 27 SBI_EXT_TIME = 0x54494D45, 28 SBI_EXT_IPI = 0x735049, 29 SBI_EXT_RFENCE = 0x52464E43, 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 }; 55 56 #ifdef CONFIG_SBI_V01 57 #define SBI_EXT_SET_TIMER SBI_EXT_0_1_SET_TIMER 58 #define SBI_FID_SET_TIMER 0 59 #define SBI_EXT_SEND_IPI SBI_EXT_0_1_SEND_IPI 60 #define SBI_FID_SEND_IPI 0 61 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_0_1_REMOTE_FENCE_I 62 #define SBI_FID_REMOTE_FENCE_I 0 63 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_0_1_REMOTE_SFENCE_VMA 64 #define SBI_FID_REMOTE_SFENCE_VMA 0 65 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID 66 #define SBI_FID_REMOTE_SFENCE_VMA_ASID 0 67 #else 68 #define SBI_EXT_SET_TIMER SBI_EXT_TIME 69 #define SBI_FID_SET_TIMER SBI_EXT_TIME_SET_TIMER 70 #define SBI_EXT_SEND_IPI SBI_EXT_IPI 71 #define SBI_FID_SEND_IPI SBI_EXT_IPI_SEND_IPI 72 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_RFENCE 73 #define SBI_FID_REMOTE_FENCE_I SBI_EXT_RFENCE_REMOTE_FENCE_I 74 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_RFENCE 75 #define SBI_FID_REMOTE_SFENCE_VMA SBI_EXT_RFENCE_REMOTE_SFENCE_VMA 76 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE 77 #define SBI_FID_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID 78 #endif 79 80 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 81 #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f 82 #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff 83 84 /* SBI return error codes */ 85 #define SBI_SUCCESS 0 86 #define SBI_ERR_FAILURE -1 87 #define SBI_ERR_NOT_SUPPORTED -2 88 #define SBI_ERR_INVALID_PARAM -3 89 #define SBI_ERR_DENIED -4 90 #define SBI_ERR_INVALID_ADDRESS -5 91 92 struct sbiret { 93 long error; 94 long value; 95 }; 96 97 struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, 98 unsigned long arg1, unsigned long arg2, 99 unsigned long arg3, unsigned long arg4, 100 unsigned long arg5); 101 102 #ifdef CONFIG_SBI_V01 103 void sbi_console_putchar(int ch); 104 int sbi_console_getchar(void); 105 void sbi_clear_ipi(void); 106 void sbi_shutdown(void); 107 void sbi_send_ipi(const unsigned long *hart_mask); 108 void sbi_remote_fence_i(const unsigned long *hart_mask); 109 void sbi_remote_sfence_vma(const unsigned long *hart_mask, 110 unsigned long start, 111 unsigned long size); 112 void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, 113 unsigned long start, 114 unsigned long size, 115 unsigned long asid); 116 #endif 117 void sbi_set_timer(uint64_t stime_value); 118 long sbi_get_spec_version(void); 119 int sbi_get_impl_id(void); 120 int sbi_probe_extension(int ext); 121 122 #endif 123