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https://github.com/riscv-software-src/opensbi
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34612193af
We add simple FDT irqchip driver for APLIC so that generic platform (and other FDT based platforms) can utilize common APLIC initialization library. Signed-off-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com>
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2021 Western Digital Corporation or its affiliates.
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* Copyright (c) 2022 Ventana Micro Systems Inc.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#include <libfdt.h>
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#include <sbi/riscv_asm.h>
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#include <sbi/sbi_error.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/irqchip/fdt_irqchip.h>
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#include <sbi_utils/irqchip/aplic.h>
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#define APLIC_MAX_NR 16
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static unsigned long aplic_count = 0;
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static struct aplic_data aplic[APLIC_MAX_NR];
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static int irqchip_aplic_warm_init(void)
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{
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/* Nothing to do here. */
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return 0;
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}
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static int irqchip_aplic_cold_init(void *fdt, int nodeoff,
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const struct fdt_match *match)
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{
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int rc;
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struct aplic_data *pd;
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if (APLIC_MAX_NR <= aplic_count)
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return SBI_ENOSPC;
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pd = &aplic[aplic_count++];
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rc = fdt_parse_aplic_node(fdt, nodeoff, pd);
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if (rc)
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return rc;
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return aplic_cold_irqchip_init(pd);
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}
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static const struct fdt_match irqchip_aplic_match[] = {
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{ .compatible = "riscv,aplic" },
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{ },
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};
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struct fdt_irqchip fdt_irqchip_aplic = {
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.match_table = irqchip_aplic_match,
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.cold_init = irqchip_aplic_cold_init,
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.warm_init = irqchip_aplic_warm_init,
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.exit = NULL,
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};
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