36 lines
804 B
C
36 lines
804 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2020 MediaTek Inc.
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*/
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#ifndef __APU_BMAP_H__
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#define __APU_BMAP_H__
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#include <linux/spinlock.h>
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#define APU_BMAP_NAME_LEN 16
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struct apu_bmap {
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/* input */
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uint32_t start;
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uint32_t end;
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uint32_t au; // allocation unit (in bytes)
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unsigned long align_mask;
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char name[APU_BMAP_NAME_LEN];
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// output
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uint32_t size;
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unsigned long *b; // bitmap
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unsigned long nbits; // number of bits
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spinlock_t lock;
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};
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#define is_au_align(ab, val) (!((val) & (ab->au - 1)))
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int apu_bmap_init(struct apu_bmap *ab, const char *name);
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void apu_bmap_exit(struct apu_bmap *ab);
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uint32_t apu_bmap_alloc(struct apu_bmap *ab, unsigned int size,
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uint32_t given_addr);
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void apu_bmap_free(struct apu_bmap *ab, uint32_t addr, unsigned int size);
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#endif
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