forked from Mirrors/opensbi
1b9e743c3d
Before the ratification of Sscofpmf, the Andes PMU extension was designed to support the sampling and filtering with hardware performance counters (zihpm), it works with the current SBI PMU extension and Linux SBI PMU driver. We implement 1) the PMU device callbacks that update the corresponding bits on custom CSRs, 2) extentions_init() to detect the hardware support of Andes PMU and initialize the per-hart PMU related CSR, and 3) pmu_init() to register PMU device and populate event mappings. Also define a andes_pmu_setup() function which is in preparation for adding default PMU mappings in andes_hpm.h Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com> Reviewed-by: Anup Patel <anup@brainfault.org>
35 lines
743 B
C
35 lines
743 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) Copyright (c) 2023 Andes Technology Corporation
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*/
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#ifndef _RISCV_ANDES_PMU_H
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#define _RISCV_ANDES_PMU_H
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#include <sbi/sbi_hart.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/fdt/fdt_pmu.h>
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#ifdef CONFIG_ANDES_PMU
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int andes_pmu_init(const struct fdt_match *match);
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int andes_pmu_extensions_init(const struct fdt_match *match,
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struct sbi_hart_features *hfeatures);
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#else
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static inline int andes_pmu_init(const struct fdt_match *match)
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{
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return 0;
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}
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static inline int andes_pmu_extensions_init(const struct fdt_match *match,
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struct sbi_hart_features *hfeatures)
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{
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return 0;
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}
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#endif /* CONFIG_ANDES_PMU */
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#endif /* _RISCV_ANDES_PMU_H */
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