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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2015 Regents of the University of California
- * Copyright (c) 2020 Western Digital Corporation or its affiliates.
- */
- #ifndef _ASM_RISCV_SBI_H
- #define _ASM_RISCV_SBI_H
- #include <linux/types.h>
- #ifdef CONFIG_RISCV_SBI
- enum sbi_ext_id {
- #ifdef CONFIG_RISCV_SBI_V01
- 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,
- #endif
- SBI_EXT_BASE = 0x10,
- SBI_EXT_TIME = 0x54494D45,
- SBI_EXT_IPI = 0x735049,
- SBI_EXT_RFENCE = 0x52464E43,
- SBI_EXT_HSM = 0x48534D,
- };
- 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,
- };
- 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,
- };
- #define SBI_SPEC_VERSION_DEFAULT 0x1
- #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
- extern unsigned long sbi_spec_version;
- struct sbiret {
- long error;
- long value;
- };
- int sbi_init(void);
- 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);
- void sbi_console_putchar(int ch);
- int sbi_console_getchar(void);
- long sbi_get_mvendorid(void);
- long sbi_get_marchid(void);
- long sbi_get_mimpid(void);
- void sbi_set_timer(uint64_t stime_value);
- void sbi_shutdown(void);
- void sbi_clear_ipi(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);
- int sbi_remote_hfence_gvma(const unsigned long *hart_mask,
- unsigned long start,
- unsigned long size);
- int sbi_remote_hfence_gvma_vmid(const unsigned long *hart_mask,
- unsigned long start,
- unsigned long size,
- unsigned long vmid);
- int sbi_remote_hfence_vvma(const unsigned long *hart_mask,
- unsigned long start,
- unsigned long size);
- int sbi_remote_hfence_vvma_asid(const unsigned long *hart_mask,
- unsigned long start,
- unsigned long size,
- unsigned long asid);
- int sbi_probe_extension(int ext);
- /* Check if current SBI specification version is 0.1 or not */
- static inline int sbi_spec_is_0_1(void)
- {
- return (sbi_spec_version == SBI_SPEC_VERSION_DEFAULT) ? 1 : 0;
- }
- /* Get the major version of SBI */
- static inline unsigned long sbi_major_version(void)
- {
- return (sbi_spec_version >> SBI_SPEC_VERSION_MAJOR_SHIFT) &
- SBI_SPEC_VERSION_MAJOR_MASK;
- }
- /* Get the minor version of SBI */
- static inline unsigned long sbi_minor_version(void)
- {
- return sbi_spec_version & SBI_SPEC_VERSION_MINOR_MASK;
- }
- int sbi_err_map_linux_errno(int err);
- #else /* CONFIG_RISCV_SBI */
- /* stubs for code that is only reachable under IS_ENABLED(CONFIG_RISCV_SBI): */
- void sbi_set_timer(uint64_t stime_value);
- void sbi_clear_ipi(void);
- void sbi_send_ipi(const unsigned long *hart_mask);
- void sbi_remote_fence_i(const unsigned long *hart_mask);
- void sbi_init(void);
- #endif /* CONFIG_RISCV_SBI */
- #endif /* _ASM_RISCV_SBI_H */
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