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3fbe233a15
This patch reduces memory consumed by struct sbi_fifo by droping redundant "head" member and using u16 in-place of "unsigned long". Signed-off-by: Anup Patel <anup.patel@wdc.com>
34 lines
703 B
C
34 lines
703 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Atish Patra<atish.patra@wdc.com>
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*
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*/
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#ifndef __SBI_FIFO_H__
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#define __SBI_FIFO_H__
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#include <sbi/riscv_locks.h>
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#include <sbi/sbi_types.h>
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struct sbi_fifo {
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void *queue;
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spinlock_t qlock;
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u16 entry_size;
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u16 num_entries;
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u16 avail;
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u16 tail;
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};
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int sbi_fifo_dequeue(struct sbi_fifo *fifo, void *data);
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int sbi_fifo_enqueue(struct sbi_fifo *fifo, void *data);
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void sbi_fifo_init(struct sbi_fifo *fifo, void *queue_mem,
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u16 entries, u16 entry_size);
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bool sbi_fifo_is_empty(struct sbi_fifo *fifo);
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bool sbi_fifo_is_full(struct sbi_fifo *fifo);
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#endif
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