snRuntime/src/global_interrupts.h

Functions

	Name
void	snrt_int_sw_clear(uint32_t hartid) Clear SW interrupt in CLINT.
void	snrt_int_sw_set(uint32_t hartid) Set SW interrupt in CLINT.
uint32_t	snrt_int_sw_get(uint32_t hartid) Read SW interrupt for hartid in CLINT.

Functions Documentation

function snrt_int_sw_clear

inline void snrt_int_sw_clear(
    uint32_t hartid
)

Clear SW interrupt in CLINT.

Parameters:

• hartid Target interrupt to clear

function snrt_int_sw_set

inline void snrt_int_sw_set(
    uint32_t hartid
)

Set SW interrupt in CLINT.

Parameters:

• hartid Target interrupt to set

function snrt_int_sw_get

inline uint32_t snrt_int_sw_get(
    uint32_t hartid
)

Read SW interrupt for hartid in CLINT.

Parameters:

• hartid hartid to poll for interrupt flag

Return: uint32_t 0 if no SW interrupt is pending, 1 otherwise

Source code

// Copyright 2023 ETH Zurich and University of Bologna.
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0

inline void snrt_int_sw_clear(uint32_t hartid) {
    snrt_mutex_acquire(snrt_clint_mutex_ptr());
    *(snrt_clint_msip_ptr(hartid)) &= ~(1 << (hartid & 0x1f));
    snrt_mutex_release(snrt_clint_mutex_ptr());
}

inline void snrt_int_sw_set(uint32_t hartid) {
    snrt_mutex_acquire(snrt_clint_mutex_ptr());
    *(snrt_clint_msip_ptr(hartid)) |= (1 << (hartid & 0x1f));
    snrt_mutex_release(snrt_clint_mutex_ptr());
}

inline uint32_t snrt_int_sw_get(uint32_t hartid) {
    snrt_mutex_acquire(snrt_clint_mutex_ptr());
    uint32_t ret = *(snrt_clint_msip_ptr(hartid)) >> (hartid & 0x1f);
    snrt_mutex_release(snrt_clint_mutex_ptr());
    return ret;
}

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Updated on 2023-06-19 at 09:43:56 +0000