1ef46c231d
Few v0.1 SBI calls are being replaced by new SBI calls that follows v0.2 calling convention. Implement the replacement extensions and few additional new SBI function calls that makes way for a better SBI interface in future. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
142 lines
3.9 KiB
C
142 lines
3.9 KiB
C
/* 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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};
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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,
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SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID,
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SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA,
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SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID,
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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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#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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