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Add dmaengine_is_copy_aligned(), dmaengine_is_xor_aligned(), dmaengine_is_pq_aligned() and dmaengine_is_fill_aligned() as channel-based counterparts to the existing is_dma_*_aligned() family. Each wrapper calls dmaengine_check_align() directly with the alignment value from chan->device, keeping struct dma_device opaque to consumers. Signed-off-by: Frank Li --- include/linux/dmaengine.h | 64 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 6a187136f9493..1efb04e137673 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -1537,6 +1537,70 @@ static inline bool is_dma_fill_aligned(struct dma_device *dev, size_t off1, return dmaengine_check_align(dev->fill_align, off1, off2, len); } +/** + * dmaengine_is_copy_aligned - test copy alignment + * @chan: DMA channel + * @off1: first buffer offset + * @off2: second buffer offset + * @len: transfer length + * + * Return true if off1, off2 and len satisfy the copy alignment requirement of + * the DMA channel, false otherwise. + */ +static inline bool dmaengine_is_copy_aligned(struct dma_chan *chan, size_t off1, + size_t off2, size_t len) +{ + return dmaengine_check_align(chan->device->copy_align, off1, off2, len); +} + +/** + * dmaengine_is_xor_aligned - test xor alignment + * @chan: DMA channel + * @off1: first buffer offset + * @off2: second buffer offset + * @len: transfer length + * + * Return true if off1, off2 and len satisfy the xor alignment requirement of + * the DMA channel, false otherwise. + */ +static inline bool dmaengine_is_xor_aligned(struct dma_chan *chan, size_t off1, + size_t off2, size_t len) +{ + return dmaengine_check_align(chan->device->xor_align, off1, off2, len); +} + +/** + * dmaengine_is_pq_aligned - test pq alignment + * @chan: DMA channel + * @off1: first buffer offset + * @off2: second buffer offset + * @len: transfer length + * + * Return true if off1, off2 and len satisfy the pq alignment requirement of + * the DMA channel, false otherwise. + */ +static inline bool dmaengine_is_pq_aligned(struct dma_chan *chan, size_t off1, + size_t off2, size_t len) +{ + return dmaengine_check_align(chan->device->pq_align, off1, off2, len); +} + +/** + * dmaengine_is_fill_aligned - test fill alignment + * @chan: DMA channel + * @off1: first buffer offset + * @off2: second buffer offset + * @len: transfer length + * + * Return true if off1, off2 and len satisfy the fill alignment requirement of + * the DMA channel, false otherwise. + */ +static inline bool dmaengine_is_fill_aligned(struct dma_chan *chan, size_t off1, + size_t off2, size_t len) +{ + return dmaengine_check_align(chan->device->fill_align, off1, off2, len); +} + static inline void dma_set_maxpq(struct dma_device *dma, int maxpq, int has_pq_continue) { -- 2.43.0