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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/arm/mach-davinci/sram.h | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-davinci/sram.h')
-rw-r--r-- | arch/arm/mach-davinci/sram.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/sram.h b/arch/arm/mach-davinci/sram.h new file mode 100644 index 000000000..7ef8d1d3c --- /dev/null +++ b/arch/arm/mach-davinci/sram.h @@ -0,0 +1,27 @@ +/* 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 */ |