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/* * mach/sram.h - DaVinci simple SRAM allocator * * Copyright (C) 2009 David Brownell * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #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 */