28 строки
813 B
C
28 строки
813 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* mach/sram.h - DaVinci simple SRAM allocator
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*
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* Copyright (C) 2009 David Brownell
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*/
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#ifndef __MACH_SRAM_H
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#define __MACH_SRAM_H
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/* ARBITRARY: SRAM allocations are multiples of this 2^N size */
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#define SRAM_GRANULARITY 512
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/*
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* SRAM allocations return a CPU virtual address, or NULL on error.
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* If a DMA address is requested and the SRAM supports DMA, its
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* mapped address is also returned.
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*
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* Errors include SRAM memory not being available, and requesting
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* DMA mapped SRAM on systems which don't allow that.
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*/
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extern void *sram_alloc(size_t len, dma_addr_t *dma);
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extern void sram_free(void *addr, size_t len);
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/* Get the struct gen_pool * for use in platform data */
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extern struct gen_pool *sram_get_gen_pool(void);
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#endif /* __MACH_SRAM_H */
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