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| author | Andrew Davis <afd@ti.com> | 2023-01-06 12:02:50 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-01-26 14:17:59 -0500 |
| commit | 62d4b2b2277b94502e2dcac37a975e20e3d2cbec (patch) | |
| tree | 742f543d2a1d8b36b7a9ae99c2d4e3c3a73b09e2 | |
| parent | 1ea40869e8a056d0e779164cbf2139be6568d835 (diff) | |
| download | u-boot-62d4b2b2277b94502e2dcac37a975e20e3d2cbec.zip u-boot-62d4b2b2277b94502e2dcac37a975e20e3d2cbec.tar.gz u-boot-62d4b2b2277b94502e2dcac37a975e20e3d2cbec.tar.bz2 | |
common: bouncebuf: Use dma-mapping for cache ops
This matches how this would be done in Linux and these functions
do the alignment for us which makes the code look cleaner.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | common/bouncebuf.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/common/bouncebuf.c b/common/bouncebuf.c index 6d98920..93a3566 100644 --- a/common/bouncebuf.c +++ b/common/bouncebuf.c @@ -12,6 +12,7 @@ #include <errno.h> #include <bouncebuf.h> #include <asm/cache.h> +#include <linux/dma-mapping.h> static int addr_aligned(struct bounce_buffer *state) { @@ -59,9 +60,9 @@ int bounce_buffer_start_extalign(struct bounce_buffer *state, void *data, * Flush data to RAM so DMA reads can pick it up, * and any CPU writebacks don't race with DMA writes */ - flush_dcache_range((unsigned long)state->bounce_buffer, - (unsigned long)(state->bounce_buffer) + - state->len_aligned); + dma_map_single(state->bounce_buffer, + state->len_aligned, + DMA_BIDIRECTIONAL); return 0; } @@ -78,9 +79,9 @@ int bounce_buffer_stop(struct bounce_buffer *state) { if (state->flags & GEN_BB_WRITE) { /* Invalidate cache so that CPU can see any newly DMA'd data */ - invalidate_dcache_range((unsigned long)state->bounce_buffer, - (unsigned long)(state->bounce_buffer) + - state->len_aligned); + dma_unmap_single((dma_addr_t)state->bounce_buffer, + state->len_aligned, + DMA_BIDIRECTIONAL); } if (state->bounce_buffer == state->user_buffer) |