forked from Mirrors/opensbi
8334a88c63
Implement a fifo to accomodate outstanding IPIs for a specific hart at the same time. Signed-off-by: Atish Patra <atish.patra@wdc.com>
33 lines
722 B
C
33 lines
722 B
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
|
|
*
|
|
* Authors:
|
|
* Atish Patra<atish.patra@wdc.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef __SBI_FIFO_H__
|
|
#define __SBI_FIFO_H__
|
|
|
|
#include <sbi/riscv_locks.h>
|
|
#include <sbi/sbi_types.h>
|
|
|
|
struct sbi_fifo {
|
|
int head;
|
|
int tail;
|
|
spinlock_t qlock;
|
|
unsigned long entrysize;
|
|
unsigned long num_entries;
|
|
void *queue;
|
|
};
|
|
|
|
int sbi_fifo_dequeue(struct sbi_fifo *fifo, void *data);
|
|
int sbi_fifo_enqueue(struct sbi_fifo *fifo, void *data);
|
|
void sbi_fifo_init(struct sbi_fifo *fifo, unsigned long entries,
|
|
unsigned long entrysize);
|
|
bool sbi_fifo_is_empty(struct sbi_fifo *fifo);
|
|
bool sbi_fifo_is_full(struct sbi_fifo *fifo);
|
|
#endif
|