/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2015 Regents of the University of California * Copyright (c) 2020 Western Digital Corporation or its affiliates. * * Taken from Linux arch/riscv/include/asm/sbi.h */ #ifndef _ASM_RISCV_SBI_H #define _ASM_RISCV_SBI_H #include enum sbi_ext_id { SBI_EXT_0_1_SET_TIMER = 0x0, SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1, SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2, SBI_EXT_0_1_CLEAR_IPI = 0x3, SBI_EXT_0_1_SEND_IPI = 0x4, SBI_EXT_0_1_REMOTE_FENCE_I = 0x5, SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6, SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7, SBI_EXT_0_1_SHUTDOWN = 0x8, SBI_EXT_BASE = 0x10, SBI_EXT_TIME = 0x54494D45, SBI_EXT_IPI = 0x735049, SBI_EXT_RFENCE = 0x52464E43, SBI_EXT_HSM = 0x48534D, SBI_EXT_SRST = 0x53525354, SBI_EXT_PMU = 0x504D55, SBI_EXT_DBCN = 0x4442434E, SBI_EXT_SUSP = 0x53555350, SBI_EXT_CPPC = 0x43505043, SBI_EXT_NACL = 0x4E41434C, SBI_EXT_STA = 0x535441, }; enum sbi_ext_base_fid { SBI_EXT_BASE_GET_SPEC_VERSION = 0, SBI_EXT_BASE_GET_IMP_ID, SBI_EXT_BASE_GET_IMP_VERSION, SBI_EXT_BASE_PROBE_EXT, SBI_EXT_BASE_GET_MVENDORID, SBI_EXT_BASE_GET_MARCHID, SBI_EXT_BASE_GET_MIMPID, }; enum sbi_ext_time_fid { SBI_EXT_TIME_SET_TIMER = 0, }; enum sbi_ext_ipi_fid { SBI_EXT_IPI_SEND_IPI = 0, }; enum sbi_ext_rfence_fid { SBI_EXT_RFENCE_REMOTE_FENCE_I = 0, SBI_EXT_RFENCE_REMOTE_SFENCE_VMA, SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID, SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID, SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA, SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID, SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA, }; enum sbi_ext_hsm_fid { SBI_EXT_HSM_HART_START = 0, SBI_EXT_HSM_HART_STOP, SBI_EXT_HSM_HART_STATUS, SBI_EXT_HSM_HART_SUSPEND, }; enum sbi_hsm_hart_status { SBI_HSM_HART_STATUS_STARTED = 0, SBI_HSM_HART_STATUS_STOPPED, SBI_HSM_HART_STATUS_START_PENDING, SBI_HSM_HART_STATUS_STOP_PENDING, SBI_HSM_HART_STATUS_SUSPEND_PENDING, SBI_HSM_HART_STATUS_RESUME_PENDING, }; enum sbi_ext_srst_fid { SBI_EXT_SRST_RESET = 0, }; enum sbi_srst_reset_type { SBI_SRST_RESET_TYPE_SHUTDOWN = 0, SBI_SRST_RESET_TYPE_COLD_REBOOT, SBI_SRST_RESET_TYPE_WARM_REBOOT, }; enum sbi_srst_reset_reason { SBI_SRST_RESET_REASON_NONE = 0, SBI_SRST_RESET_REASON_SYS_FAILURE, }; enum sbi_ext_dbcn_fid { SBI_EXT_DBCN_CONSOLE_WRITE = 0, SBI_EXT_DBCN_CONSOLE_READ, SBI_EXT_DBCN_CONSOLE_WRITE_BYTE, }; #ifdef CONFIG_SBI_V01 #define SBI_EXT_SET_TIMER SBI_EXT_0_1_SET_TIMER #define SBI_FID_SET_TIMER 0 #define SBI_EXT_SEND_IPI SBI_EXT_0_1_SEND_IPI #define SBI_FID_SEND_IPI 0 #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_0_1_REMOTE_FENCE_I #define SBI_FID_REMOTE_FENCE_I 0 #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_0_1_REMOTE_SFENCE_VMA #define SBI_FID_REMOTE_SFENCE_VMA 0 #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID #define SBI_FID_REMOTE_SFENCE_VMA_ASID 0 #else #define SBI_EXT_SET_TIMER SBI_EXT_TIME #define SBI_FID_SET_TIMER SBI_EXT_TIME_SET_TIMER #define SBI_EXT_SEND_IPI SBI_EXT_IPI #define SBI_FID_SEND_IPI SBI_EXT_IPI_SEND_IPI #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_RFENCE #define SBI_FID_REMOTE_FENCE_I SBI_EXT_RFENCE_REMOTE_FENCE_I #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_RFENCE #define SBI_FID_REMOTE_SFENCE_VMA SBI_EXT_RFENCE_REMOTE_SFENCE_VMA #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE #define SBI_FID_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID #endif #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff /* SBI return error codes */ #define SBI_SUCCESS 0 #define SBI_ERR_FAILURE -1 #define SBI_ERR_NOT_SUPPORTED -2 #define SBI_ERR_INVALID_PARAM -3 #define SBI_ERR_DENIED -4 #define SBI_ERR_INVALID_ADDRESS -5 struct sbiret { long error; long value; }; struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, unsigned long arg1, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5); #ifdef CONFIG_SBI_V01 void sbi_console_putchar(int ch); int sbi_console_getchar(void); void sbi_clear_ipi(void); void sbi_shutdown(void); void sbi_send_ipi(const unsigned long *hart_mask); void sbi_remote_fence_i(const unsigned long *hart_mask); void sbi_remote_sfence_vma(const unsigned long *hart_mask, unsigned long start, unsigned long size); void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, unsigned long start, unsigned long size, unsigned long asid); #endif void sbi_set_timer(uint64_t stime_value); long sbi_get_spec_version(void); int sbi_get_impl_id(void); int sbi_get_impl_version(long *version); int sbi_probe_extension(int ext); int sbi_get_mvendorid(long *mvendorid); int sbi_get_marchid(long *marchid); int sbi_get_mimpid(long *mimpid); void sbi_srst_reset(unsigned long type, unsigned long reason); int sbi_dbcn_write_byte(unsigned char ch); #endif