65 	struct hsu_dma_desc *desc = hsuc->desc;  in hsu_dma_chan_start()  local
85 	count = desc->nents - desc->active;  in hsu_dma_chan_start()
87 		hsu_chan_writel(hsuc, HSU_CH_DxSAR(i), desc->sg[i].addr);  in hsu_dma_chan_start()
88 		hsu_chan_writel(hsuc, HSU_CH_DxTSR(i), desc->sg[i].len);  in hsu_dma_chan_start()
94 		desc->active++;  in hsu_dma_chan_start()
123 		hsuc->desc = NULL;  in hsu_dma_start_transfer()
128 	hsuc->desc = to_hsu_dma_desc(vdesc);  in hsu_dma_start_transfer()
214 	struct hsu_dma_desc *desc;  in hsu_dma_do_irq()  local
225 	desc = hsuc->desc;  in hsu_dma_do_irq()
226 	if (desc) {  in hsu_dma_do_irq()
228 			desc->status = DMA_ERROR;  in hsu_dma_do_irq()
229 		} else if (desc->active < desc->nents) {  in hsu_dma_do_irq()
232 			vchan_cookie_complete(&desc->vdesc);  in hsu_dma_do_irq()
233 			desc->status = DMA_COMPLETE;  in hsu_dma_do_irq()
234 			stat->bytes_transferred += desc->length;  in hsu_dma_do_irq()
246 	struct hsu_dma_desc *desc;  in hsu_dma_alloc_desc()  local
248 	desc = kzalloc(sizeof(*desc), GFP_NOWAIT);  in hsu_dma_alloc_desc()
249 	if (!desc)  in hsu_dma_alloc_desc()
252 	desc->sg = kcalloc(nents, sizeof(*desc->sg), GFP_NOWAIT);  in hsu_dma_alloc_desc()
253 	if (!desc->sg) {  in hsu_dma_alloc_desc()
254 		kfree(desc);  in hsu_dma_alloc_desc()
258 	return desc;  in hsu_dma_alloc_desc()
263 	struct hsu_dma_desc *desc = to_hsu_dma_desc(vdesc);  in hsu_dma_desc_free()  local
265 	kfree(desc->sg);  in hsu_dma_desc_free()
266 	kfree(desc);  in hsu_dma_desc_free()
275 	struct hsu_dma_desc *desc;  in hsu_dma_prep_slave_sg()  local
279 	desc = hsu_dma_alloc_desc(sg_len);  in hsu_dma_prep_slave_sg()
280 	if (!desc)  in hsu_dma_prep_slave_sg()
284 		desc->sg[i].addr = sg_dma_address(sg);  in hsu_dma_prep_slave_sg()
285 		desc->sg[i].len = sg_dma_len(sg);  in hsu_dma_prep_slave_sg()
287 		desc->length += sg_dma_len(sg);  in hsu_dma_prep_slave_sg()
290 	desc->nents = sg_len;  in hsu_dma_prep_slave_sg()
291 	desc->direction = direction;  in hsu_dma_prep_slave_sg()
293 	desc->status = DMA_IN_PROGRESS;  in hsu_dma_prep_slave_sg()
295 	return vchan_tx_prep(&hsuc->vchan, &desc->vdesc, flags);  in hsu_dma_prep_slave_sg()
304 	if (vchan_issue_pending(&hsuc->vchan) && !hsuc->desc)  in hsu_dma_issue_pending()
311 	struct hsu_dma_desc *desc = hsuc->desc;  in hsu_dma_active_desc_size()  local
315 	for (i = desc->active; i < desc->nents; i++)  in hsu_dma_active_desc_size()
316 		bytes += desc->sg[i].len;  in hsu_dma_active_desc_size()
341 	if (hsuc->desc && cookie == hsuc->desc->vdesc.tx.cookie) {  in hsu_dma_tx_status()
344 		status = hsuc->desc->status;  in hsu_dma_tx_status()
370 	if (hsuc->desc && hsuc->desc->status == DMA_IN_PROGRESS) {  in hsu_dma_pause()
372 		hsuc->desc->status = DMA_PAUSED;  in hsu_dma_pause()
385 	if (hsuc->desc && hsuc->desc->status == DMA_PAUSED) {  in hsu_dma_resume()
386 		hsuc->desc->status = DMA_IN_PROGRESS;  in hsu_dma_resume()
403 	if (hsuc->desc) {  in hsu_dma_terminate_all()
404 		hsu_dma_desc_free(&hsuc->desc->vdesc);  in hsu_dma_terminate_all()
405 		hsuc->desc = NULL;  in hsu_dma_terminate_all()