80 void ivtv_udma_alloc(struct ivtv *itv)  in ivtv_udma_alloc()  argument
82 	if (itv->udma.SG_handle == 0) {  in ivtv_udma_alloc()
84 		itv->udma.SG_handle = dma_map_single(&itv->pdev->dev,  in ivtv_udma_alloc()
85 						     itv->udma.SGarray,  in ivtv_udma_alloc()
86 						     sizeof(itv->udma.SGarray),  in ivtv_udma_alloc()
88 		ivtv_udma_sync_for_cpu(itv);  in ivtv_udma_alloc()
92 int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,  in ivtv_udma_setup()  argument
96 	struct ivtv_user_dma *dma = &itv->udma;  in ivtv_udma_setup()
142 	dma->SG_length = dma_map_sg(&itv->pdev->dev, dma->SGlist,  in ivtv_udma_setup()
157 	ivtv_udma_sync_for_device(itv);  in ivtv_udma_setup()
161 void ivtv_udma_unmap(struct ivtv *itv)  in ivtv_udma_unmap()  argument
163 	struct ivtv_user_dma *dma = &itv->udma;  in ivtv_udma_unmap()
173 		dma_unmap_sg(&itv->pdev->dev, dma->SGlist, dma->page_count,  in ivtv_udma_unmap()
178 	ivtv_udma_sync_for_cpu(itv);  in ivtv_udma_unmap()
184 void ivtv_udma_free(struct ivtv *itv)  in ivtv_udma_free()  argument
189 	if (itv->udma.SG_handle) {  in ivtv_udma_free()
190 		dma_unmap_single(&itv->pdev->dev, itv->udma.SG_handle,  in ivtv_udma_free()
191 				 sizeof(itv->udma.SGarray), DMA_TO_DEVICE);  in ivtv_udma_free()
195 	if (itv->udma.SG_length) {  in ivtv_udma_free()
196 		dma_unmap_sg(&itv->pdev->dev, itv->udma.SGlist,  in ivtv_udma_free()
197 			     itv->udma.page_count, DMA_TO_DEVICE);  in ivtv_udma_free()
201 		if (itv->udma.bouncemap[i])  in ivtv_udma_free()
202 			__free_page(itv->udma.bouncemap[i]);  in ivtv_udma_free()
206 void ivtv_udma_start(struct ivtv *itv)  in ivtv_udma_start()  argument
209 	write_reg(itv->udma.SG_handle, IVTV_REG_DECDMAADDR);  in ivtv_udma_start()
211 	set_bit(IVTV_F_I_DMA, &itv->i_flags);  in ivtv_udma_start()
212 	set_bit(IVTV_F_I_UDMA, &itv->i_flags);  in ivtv_udma_start()
213 	clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags);  in ivtv_udma_start()
216 void ivtv_udma_prepare(struct ivtv *itv)  in ivtv_udma_prepare()  argument
220 	spin_lock_irqsave(&itv->dma_reg_lock, flags);  in ivtv_udma_prepare()
221 	if (!test_bit(IVTV_F_I_DMA, &itv->i_flags))  in ivtv_udma_prepare()
222 		ivtv_udma_start(itv);  in ivtv_udma_prepare()
224 		set_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags);  in ivtv_udma_prepare()
225 	spin_unlock_irqrestore(&itv->dma_reg_lock, flags);  in ivtv_udma_prepare()