Messages in this thread Patch in this message | | | From | Wang Hongcheng <> | Subject | [PATCH 6/9] dmaengine:pl330: set segment_boundary_mask = 0cffffffff | Date | Fri, 4 Dec 2015 11:24:23 +0800 |
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Because amd iommu and software iommu need this mask.For example, if we use software iommu without this mask, we will get 'Out of SW-IOMMU space' error, when calling swiotlb_map_page function.
Signed-off-by: Wan Zongshun <Vincent.Wan@amd.com> Signed-off-by: Wang Hongcheng <annie.wang@amd.com> --- drivers/dma/pl330.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 9d7af0d..fb46fdf 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2966,6 +2966,10 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) if (ret) dev_err(&adev->dev, "unable to set the seg size\n"); + dev_info(&adev->dev, "set the seg boundary\n"); + ret = dma_set_seg_boundary(&adev->dev, 0xffffffff); + if (ret) + dev_err(&adev->dev, "unable to set the seg boundary\n"); dev_info(&adev->dev, "Loaded driver for PL330 DMAC-%x\n", adev->periphid); -- 1.9.1
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