drm/exynos: fix allocation and cache mapping type
This patch fixes memory alloction(contiguous or not) and cache mapping types(cachable or not). For this, it converts each type from user request into dma attribute properly. Changelog v2: - just code cleanup. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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@ -34,7 +34,7 @@ static int lowlevel_buffer_allocate(struct drm_device *dev,
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unsigned int flags, struct exynos_drm_gem_buf *buf)
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unsigned int flags, struct exynos_drm_gem_buf *buf)
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{
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{
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int ret = 0;
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int ret = 0;
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enum dma_attr attr = DMA_ATTR_FORCE_CONTIGUOUS;
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enum dma_attr attr;
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unsigned int nr_pages;
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unsigned int nr_pages;
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DRM_DEBUG_KMS("%s\n", __FILE__);
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DRM_DEBUG_KMS("%s\n", __FILE__);
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@ -46,8 +46,22 @@ static int lowlevel_buffer_allocate(struct drm_device *dev,
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init_dma_attrs(&buf->dma_attrs);
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init_dma_attrs(&buf->dma_attrs);
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if (flags & EXYNOS_BO_NONCONTIG)
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/*
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* if EXYNOS_BO_CONTIG, fully physically contiguous memory
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* region will be allocated else physically contiguous
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* as possible.
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*/
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if (flags & EXYNOS_BO_CONTIG)
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dma_set_attr(DMA_ATTR_FORCE_CONTIGUOUS, &buf->dma_attrs);
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/*
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* if EXYNOS_BO_WC or EXYNOS_BO_NONCACHABLE, writecombine mapping
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* else cachable mapping.
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*/
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if (flags & EXYNOS_BO_WC || !(flags & EXYNOS_BO_CACHABLE))
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attr = DMA_ATTR_WRITE_COMBINE;
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attr = DMA_ATTR_WRITE_COMBINE;
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else
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attr = DMA_ATTR_NON_CONSISTENT;
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dma_set_attr(attr, &buf->dma_attrs);
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dma_set_attr(attr, &buf->dma_attrs);
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dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &buf->dma_attrs);
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dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &buf->dma_attrs);
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