mirror of
https://github.com/riscv-software-src/opensbi
synced 2025-11-04 05:50:22 +00:00
3a69d12fc3
Instead of having FDT irqchip driver list hard-coded in the C source, we generate it using carray.sh at compile-time. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com>
99 lines
1.9 KiB
C
99 lines
1.9 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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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 <sbi/sbi_error.h>
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#include <sbi/sbi_scratch.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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/* List of FDT irqchip drivers generated at compile time */
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extern struct fdt_irqchip *fdt_irqchip_drivers[];
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extern unsigned long fdt_irqchip_drivers_size;
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#define FDT_IRQCHIP_MAX_DRIVERS 8
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static struct fdt_irqchip *current_drivers[FDT_IRQCHIP_MAX_DRIVERS] = {0};
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static int current_drivers_count;
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void fdt_irqchip_exit(void)
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{
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int i;
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for (i = 0; i < current_drivers_count; i++) {
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if (!current_drivers[i] || !current_drivers[i]->exit)
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continue;
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current_drivers[i]->exit();
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}
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}
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static int fdt_irqchip_warm_init(void)
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{
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int i, rc;
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for (i = 0; i < current_drivers_count; i++) {
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if (!current_drivers[i] || !current_drivers[i]->warm_init)
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continue;
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rc = current_drivers[i]->warm_init();
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if (rc)
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return rc;
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}
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return 0;
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}
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static int fdt_irqchip_cold_init(void)
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{
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bool drv_added;
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int pos, noff, rc;
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struct fdt_irqchip *drv;
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const struct fdt_match *match;
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void *fdt = fdt_get_address();
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for (pos = 0; pos < fdt_irqchip_drivers_size; pos++) {
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drv = fdt_irqchip_drivers[pos];
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noff = -1;
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drv_added = false;
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while ((noff = fdt_find_match(fdt, noff,
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drv->match_table, &match)) >= 0) {
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if (drv->cold_init) {
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rc = drv->cold_init(fdt, noff, match);
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if (rc == SBI_ENODEV)
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continue;
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if (rc)
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return rc;
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}
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if (drv_added)
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continue;
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current_drivers[current_drivers_count++] = drv;
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drv_added = true;
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}
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if (FDT_IRQCHIP_MAX_DRIVERS <= current_drivers_count)
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break;
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}
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return 0;
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}
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int fdt_irqchip_init(bool cold_boot)
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{
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int rc;
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if (cold_boot) {
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rc = fdt_irqchip_cold_init();
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if (rc)
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return rc;
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}
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return fdt_irqchip_warm_init();
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}
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