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Diffstat (limited to 'ports/risc-v64/gnu/example_build/qemu_virt/plic.h')
| -rw-r--r-- | ports/risc-v64/gnu/example_build/qemu_virt/plic.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/ports/risc-v64/gnu/example_build/qemu_virt/plic.h b/ports/risc-v64/gnu/example_build/qemu_virt/plic.h new file mode 100644 index 00000000..2d4bc085 --- /dev/null +++ b/ports/risc-v64/gnu/example_build/qemu_virt/plic.h @@ -0,0 +1,50 @@ +/*************************************************************************** + * Copyright (c) 2024 Microsoft Corporation + * + * This program and the accompanying materials are made available under the + * terms of the MIT License which is available at + * https://opensource.org/licenses/MIT. + * + * SPDX-License-Identifier: MIT + **************************************************************************/ + + +#ifndef RISCV_PLIC_H +#define RISCV_PLIC_H + +#include "csr.h" +#include <stdint.h> + +#define PLIC 0x0c000000L +#define PLIC_PRIORITY (PLIC + 0x0) +#define PLIC_PENDING (PLIC + 0x1000) +#define PLIC_MENABLE(hart) (PLIC + 0x2000 + (hart)*0x100) +#define PLIC_SENABLE(hart) (PLIC + 0x2080 + (hart)*0x100) +#define PLIC_MPRIORITY(hart) (PLIC + 0x200000 + (hart)*0x2000) +#define PLIC_SPRIORITY(hart) (PLIC + 0x201000 + (hart)*0x2000) +#define PLIC_MCLAIM(hart) (PLIC + 0x200004 + (hart)*0x2000) +#define PLIC_SCLAIM(hart) (PLIC + 0x201004 + (hart)*0x2000) +#define PLIC_MCOMPLETE(hart) (PLIC + 0x200004 + (hart)*0x2000) +#define PLIC_SCOMPLETE(hart) (PLIC + 0x201004 + (hart)*0x2000) + + +#define PLIC_GET_PRIO(irqno) (*(uint32_t *)(PLIC_PRIORITY + (irqno)*4)) +#define PLIC_SET_PRIO(irqno, prio) (*(uint32_t *)(PLIC_PRIORITY + (irqno)*4) = (prio)) + +#define MAX_CALLBACK_NUM 128 +typedef int (*irq_callback)(int irqno); + +void plic_irq_enable(int irqno); +void plic_irq_disable(int irqno); +int plic_prio_get(int irqno); +void plic_prio_set(int irqno, int prio); +int plic_register_callback(int irqno, irq_callback callback); +int plic_unregister_callback(int irqno); +int plic_init(void); +int plic_claim(void); +void plic_complete(int irqno); + +int plic_irq_intr(void); + +#endif + |