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