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drm/etnaviv: fix DMA direction handling for cached RW buffers

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[ Upstream commit 58979ad6330a70450ed78837be3095107d022ea9 ]

The dma sync operation needs to be done with DMA_BIDIRECTIONAL when
the BO is prepared for both read and write operations.

Fixes: a8c21a5451d8 ("drm/etnaviv: add initial etnaviv DRM driver")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lucas Stach 2024-06-21 19:11:06 +02:00 • committed by Ksawlii
parent b6621ebcd5
commit 796e2cfa31
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/etnaviv/etnaviv_gem.c
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@ -364,9 +364,11 @@ static void *etnaviv_gem_vmap_impl(struct etnaviv_gem_object *obj)
static inline enum dma_data_direction etnaviv_op_to_dma_dir(u32 op) static inline enum dma_data_direction etnaviv_op_to_dma_dir(u32 op)
{ {
if (op & ETNA_PREP_READ) op &= ETNA_PREP_READ | ETNA_PREP_WRITE;
if (op == ETNA_PREP_READ)
return DMA_FROM_DEVICE; return DMA_FROM_DEVICE;
else if (op & ETNA_PREP_WRITE) else if (op == ETNA_PREP_WRITE)
return DMA_TO_DEVICE; return DMA_TO_DEVICE;
else else
return DMA_BIDIRECTIONAL; return DMA_BIDIRECTIONAL;