2 * mach/sram.h - DaVinci simple SRAM allocator
4 * Copyright (C) 2009 David Brownell
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
13 /* ARBITRARY: SRAM allocations are multiples of this 2^N size */
14 #define SRAM_GRANULARITY 512
17 * SRAM allocations return a CPU virtual address, or NULL on error.
18 * If a DMA address is requested and the SRAM supports DMA, its
19 * mapped address is also returned.
21 * Errors include SRAM memory not being available, and requesting
22 * DMA mapped SRAM on systems which don't allow that.
24 extern void *sram_alloc(size_t len, dma_addr_t *dma);
25 extern void sram_free(void *addr, size_t len);
27 /* Get the struct gen_pool * for use in platform data */
28 extern struct gen_pool *sram_get_gen_pool(void);
30 #endif /* __MACH_SRAM_H */