1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef _ASMRISCV_SBI_H_ 3 #define _ASMRISCV_SBI_H_ 4 5 #define SBI_SUCCESS 0 6 #define SBI_ERR_FAILURE -1 7 #define SBI_ERR_NOT_SUPPORTED -2 8 #define SBI_ERR_INVALID_PARAM -3 9 #define SBI_ERR_DENIED -4 10 #define SBI_ERR_INVALID_ADDRESS -5 11 #define SBI_ERR_ALREADY_AVAILABLE -6 12 #define SBI_ERR_ALREADY_STARTED -7 13 #define SBI_ERR_ALREADY_STOPPED -8 14 15 #ifndef __ASSEMBLY__ 16 #include <cpumask.h> 17 18 enum sbi_ext_id { 19 SBI_EXT_BASE = 0x10, 20 SBI_EXT_TIME = 0x54494d45, 21 SBI_EXT_IPI = 0x735049, 22 SBI_EXT_HSM = 0x48534d, 23 SBI_EXT_SRST = 0x53525354, 24 SBI_EXT_DBCN = 0x4442434E, 25 }; 26 27 enum sbi_ext_base_fid { 28 SBI_EXT_BASE_GET_SPEC_VERSION = 0, 29 SBI_EXT_BASE_GET_IMP_ID, 30 SBI_EXT_BASE_GET_IMP_VERSION, 31 SBI_EXT_BASE_PROBE_EXT, 32 SBI_EXT_BASE_GET_MVENDORID, 33 SBI_EXT_BASE_GET_MARCHID, 34 SBI_EXT_BASE_GET_MIMPID, 35 }; 36 37 enum sbi_ext_hsm_fid { 38 SBI_EXT_HSM_HART_START = 0, 39 SBI_EXT_HSM_HART_STOP, 40 SBI_EXT_HSM_HART_STATUS, 41 SBI_EXT_HSM_HART_SUSPEND, 42 }; 43 44 enum sbi_ext_time_fid { 45 SBI_EXT_TIME_SET_TIMER = 0, 46 }; 47 48 enum sbi_ext_ipi_fid { 49 SBI_EXT_IPI_SEND_IPI = 0, 50 }; 51 52 enum sbi_ext_dbcn_fid { 53 SBI_EXT_DBCN_CONSOLE_WRITE = 0, 54 SBI_EXT_DBCN_CONSOLE_READ, 55 SBI_EXT_DBCN_CONSOLE_WRITE_BYTE, 56 }; 57 58 struct sbiret { 59 long error; 60 long value; 61 }; 62 63 struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, 64 unsigned long arg1, unsigned long arg2, 65 unsigned long arg3, unsigned long arg4, 66 unsigned long arg5); 67 68 void sbi_shutdown(void); 69 struct sbiret sbi_hart_start(unsigned long hartid, unsigned long entry, unsigned long sp); 70 struct sbiret sbi_send_ipi(unsigned long hart_mask, unsigned long hart_mask_base); 71 struct sbiret sbi_send_ipi_cpu(int cpu); 72 struct sbiret sbi_send_ipi_cpumask(const cpumask_t *mask); 73 struct sbiret sbi_set_timer(unsigned long stime_value); 74 long sbi_probe(int ext); 75 76 #endif /* !__ASSEMBLY__ */ 77 #endif /* _ASMRISCV_SBI_H_ */ 78