rt-thread-official/libcpu/risc-v/virt64/plic.h

78 lines
2.8 KiB
C

/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-05-20 bigmagic first version
* 2021-10-20 bernard fix s-mode issue
*/
#ifndef __PLIC_H__
#define __PLIC_H__
#include <rtconfig.h>
#include <rthw.h>
#define PLIC_PRIORITY_BASE 0x0
#define PLIC_PENDING_BASE 0x1000
#define PLIC_ENABLE_BASE 0x2000
#define PLIC_CONTEXT_BASE 0x200000
extern size_t plic_base;
#define VIRT_PLIC_BASE (plic_base)
#define PLIC_PRIORITY_OFFSET (0x0)
#define PLIC_PENDING_OFFSET (0x1000)
#define PLIC_ENABLE_STRIDE 0x80
#define PLIC_CONTEXT_STRIDE 0x1000
#ifndef RISCV_S_MODE
#define PLIC_MENABLE_OFFSET (0x2000)
#define PLIC_MTHRESHOLD_OFFSET (0x200000)
#define PLIC_MCLAIM_OFFSET (0x200004)
#define PLIC_MCOMPLETE_OFFSET (0x200004)
#define PLIC_ENABLE(hart) (VIRT_PLIC_BASE + PLIC_MENABLE_OFFSET + (hart * 2) * PLIC_ENABLE_STRIDE)
#define PLIC_THRESHOLD(hart) (VIRT_PLIC_BASE + PLIC_MTHRESHOLD_OFFSET + (hart * 2) * PLIC_CONTEXT_STRIDE)
#define PLIC_CLAIM(hart) (VIRT_PLIC_BASE + PLIC_MCLAIM_OFFSET + (hart * 2) * PLIC_CONTEXT_STRIDE)
#define PLIC_COMPLETE(hart) (VIRT_PLIC_BASE + PLIC_MCOMPLETE_OFFSET + (hart * 2) * PLIC_CONTEXT_STRIDE)
#else
#define PLIC_SENABLE_OFFSET (0x2000 + PLIC_ENABLE_STRIDE)
#define PLIC_STHRESHOLD_OFFSET (0x200000 + PLIC_CONTEXT_STRIDE)
#define PLIC_SCLAIM_OFFSET (0x200004 + PLIC_CONTEXT_STRIDE)
#define PLIC_SCOMPLETE_OFFSET (0x200004 + PLIC_CONTEXT_STRIDE)
#define PLIC_ENABLE(hart) (VIRT_PLIC_BASE + PLIC_SENABLE_OFFSET + (hart * 2) * PLIC_ENABLE_STRIDE)
#define PLIC_THRESHOLD(hart) (VIRT_PLIC_BASE + PLIC_STHRESHOLD_OFFSET + (hart * 2) * PLIC_CONTEXT_STRIDE)
#define PLIC_CLAIM(hart) (VIRT_PLIC_BASE + PLIC_SCLAIM_OFFSET + (hart * 2) * PLIC_CONTEXT_STRIDE)
#define PLIC_COMPLETE(hart) (VIRT_PLIC_BASE + PLIC_SCOMPLETE_OFFSET + (hart * 2) * PLIC_CONTEXT_STRIDE)
#endif
#define PLIC_PRIORITY(id) (VIRT_PLIC_BASE + PLIC_PRIORITY_OFFSET + (id) * 4)
#define PLIC_PENDING(id) (VIRT_PLIC_BASE + PLIC_PENDING_OFFSET + ((id) / 32))
#define WORD_CNT_BYTE (1024 / 8)
/* IRQ config in system, max 1024 (from 0 to 1023) */
#define CONFIG_IRQ_NR (128)
#define CONFIG_IRQ_WORD (CONFIG_IRQ_NR / 32)
void plic_set_priority(int irq, int priority);
void plic_irq_enable(int irq);
void plic_irq_disable(int irq);
void plic_set_threshold(int mthreshold);
int plic_claim(void);
void plic_complete(int irq);
void plic_set_thresh(rt_uint32_t val);
void plic_set_ie(rt_uint32_t word_index,rt_uint32_t val);
void plic_init();
void plic_handle_irq(void);
#endif