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gpu: host1x: Set up device DMA parameters

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In order to store device DMA parameters, the DMA framework depends on
the device's dma_parms field to point at a valid memory location. Add
backing storage for this in struct host1x_memory_context and point to
it.

Reported-by: Jonathan Hunter <jonathanh@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240916133320.368620-1-thierry.reding@gmail.com
(cherry picked from commit b4ad4ef374)
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2024-09-16 15:33:20 +02:00
parent c8347f915e
commit eb0c062161
2 changed files with 2 additions and 0 deletions
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1
drivers/gpu/host1x/context.c
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@ -58,6 +58,7 @@ int host1x_memory_context_list_init(struct host1x *host1x)
ctx->dev.parent = host1x->dev;
ctx->dev.release = host1x_memory_context_release;
ctx->dev.dma_parms = &ctx->dma_parms;
dma_set_max_seg_size(&ctx->dev, UINT_MAX);
err = device_add(&ctx->dev);

1
include/linux/host1x.h
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@ -466,6 +466,7 @@ struct host1x_memory_context {
refcount_t ref;
struct pid *owner;
struct device_dma_parameters dma_parms;
struct device dev;
u64 dma_mask;
u32 stream_id;