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157 lines
4.2 KiB
157 lines
4.2 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2015 Regents of the University of California |
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* Copyright (c) 2020 Western Digital Corporation or its affiliates. |
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*/ |
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#ifndef _ASM_RISCV_SBI_H |
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#define _ASM_RISCV_SBI_H |
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#include <linux/types.h> |
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#ifdef CONFIG_RISCV_SBI |
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enum sbi_ext_id { |
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#ifdef CONFIG_RISCV_SBI_V01 |
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SBI_EXT_0_1_SET_TIMER = 0x0, |
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SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1, |
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SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2, |
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SBI_EXT_0_1_CLEAR_IPI = 0x3, |
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SBI_EXT_0_1_SEND_IPI = 0x4, |
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SBI_EXT_0_1_REMOTE_FENCE_I = 0x5, |
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SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6, |
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SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7, |
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SBI_EXT_0_1_SHUTDOWN = 0x8, |
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#endif |
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SBI_EXT_BASE = 0x10, |
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SBI_EXT_TIME = 0x54494D45, |
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SBI_EXT_IPI = 0x735049, |
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SBI_EXT_RFENCE = 0x52464E43, |
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SBI_EXT_HSM = 0x48534D, |
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}; |
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enum sbi_ext_base_fid { |
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SBI_EXT_BASE_GET_SPEC_VERSION = 0, |
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SBI_EXT_BASE_GET_IMP_ID, |
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SBI_EXT_BASE_GET_IMP_VERSION, |
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SBI_EXT_BASE_PROBE_EXT, |
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SBI_EXT_BASE_GET_MVENDORID, |
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SBI_EXT_BASE_GET_MARCHID, |
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SBI_EXT_BASE_GET_MIMPID, |
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}; |
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enum sbi_ext_time_fid { |
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SBI_EXT_TIME_SET_TIMER = 0, |
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}; |
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enum sbi_ext_ipi_fid { |
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SBI_EXT_IPI_SEND_IPI = 0, |
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}; |
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enum sbi_ext_rfence_fid { |
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SBI_EXT_RFENCE_REMOTE_FENCE_I = 0, |
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SBI_EXT_RFENCE_REMOTE_SFENCE_VMA, |
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SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID, |
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SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID, |
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SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA, |
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SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID, |
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SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA, |
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}; |
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enum sbi_ext_hsm_fid { |
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SBI_EXT_HSM_HART_START = 0, |
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SBI_EXT_HSM_HART_STOP, |
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SBI_EXT_HSM_HART_STATUS, |
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}; |
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enum sbi_hsm_hart_status { |
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SBI_HSM_HART_STATUS_STARTED = 0, |
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SBI_HSM_HART_STATUS_STOPPED, |
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SBI_HSM_HART_STATUS_START_PENDING, |
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SBI_HSM_HART_STATUS_STOP_PENDING, |
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}; |
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#define SBI_SPEC_VERSION_DEFAULT 0x1 |
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#define SBI_SPEC_VERSION_MAJOR_SHIFT 24 |
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#define SBI_SPEC_VERSION_MAJOR_MASK 0x7f |
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#define SBI_SPEC_VERSION_MINOR_MASK 0xffffff |
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/* SBI return error codes */ |
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#define SBI_SUCCESS 0 |
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#define SBI_ERR_FAILURE -1 |
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#define SBI_ERR_NOT_SUPPORTED -2 |
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#define SBI_ERR_INVALID_PARAM -3 |
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#define SBI_ERR_DENIED -4 |
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#define SBI_ERR_INVALID_ADDRESS -5 |
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extern unsigned long sbi_spec_version; |
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struct sbiret { |
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long error; |
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long value; |
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}; |
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int sbi_init(void); |
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struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, |
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unsigned long arg1, unsigned long arg2, |
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unsigned long arg3, unsigned long arg4, |
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unsigned long arg5); |
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void sbi_console_putchar(int ch); |
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int sbi_console_getchar(void); |
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void sbi_set_timer(uint64_t stime_value); |
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void sbi_shutdown(void); |
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void sbi_clear_ipi(void); |
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void sbi_send_ipi(const unsigned long *hart_mask); |
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void sbi_remote_fence_i(const unsigned long *hart_mask); |
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void sbi_remote_sfence_vma(const unsigned long *hart_mask, |
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unsigned long start, |
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unsigned long size); |
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void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, |
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unsigned long start, |
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unsigned long size, |
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unsigned long asid); |
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int sbi_remote_hfence_gvma(const unsigned long *hart_mask, |
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unsigned long start, |
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unsigned long size); |
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int sbi_remote_hfence_gvma_vmid(const unsigned long *hart_mask, |
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unsigned long start, |
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unsigned long size, |
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unsigned long vmid); |
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int sbi_remote_hfence_vvma(const unsigned long *hart_mask, |
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unsigned long start, |
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unsigned long size); |
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int sbi_remote_hfence_vvma_asid(const unsigned long *hart_mask, |
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unsigned long start, |
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unsigned long size, |
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unsigned long asid); |
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int sbi_probe_extension(int ext); |
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/* Check if current SBI specification version is 0.1 or not */ |
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static inline int sbi_spec_is_0_1(void) |
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{ |
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return (sbi_spec_version == SBI_SPEC_VERSION_DEFAULT) ? 1 : 0; |
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} |
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/* Get the major version of SBI */ |
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static inline unsigned long sbi_major_version(void) |
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{ |
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return (sbi_spec_version >> SBI_SPEC_VERSION_MAJOR_SHIFT) & |
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SBI_SPEC_VERSION_MAJOR_MASK; |
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} |
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/* Get the minor version of SBI */ |
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static inline unsigned long sbi_minor_version(void) |
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{ |
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return sbi_spec_version & SBI_SPEC_VERSION_MINOR_MASK; |
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} |
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int sbi_err_map_linux_errno(int err); |
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#else /* CONFIG_RISCV_SBI */ |
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/* stubs for code that is only reachable under IS_ENABLED(CONFIG_RISCV_SBI): */ |
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void sbi_set_timer(uint64_t stime_value); |
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void sbi_clear_ipi(void); |
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void sbi_send_ipi(const unsigned long *hart_mask); |
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void sbi_remote_fence_i(const unsigned long *hart_mask); |
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void sbi_init(void); |
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#endif /* CONFIG_RISCV_SBI */ |
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#endif /* _ASM_RISCV_SBI_H */
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