76 static struct dw_edma_chunk *dw_edma_alloc_chunk(struct dw_edma_desc *desc)  in dw_edma_alloc_chunk()  argument
78 	struct dw_edma_chip *chip = desc->chan->dw->chip;  in dw_edma_alloc_chunk()
79 	struct dw_edma_chan *chan = desc->chan;  in dw_edma_alloc_chunk()
94 	chunk->cb = !(desc->chunks_alloc % 2);  in dw_edma_alloc_chunk()
103 	if (desc->chunk) {  in dw_edma_alloc_chunk()
109 		desc->chunks_alloc++;  in dw_edma_alloc_chunk()
110 		list_add_tail(&chunk->list, &desc->chunk->list);  in dw_edma_alloc_chunk()
114 		desc->chunks_alloc = 0;  in dw_edma_alloc_chunk()
115 		desc->chunk = chunk;  in dw_edma_alloc_chunk()
123 	struct dw_edma_desc *desc;  in dw_edma_alloc_desc()  local
125 	desc = kzalloc(sizeof(*desc), GFP_NOWAIT);  in dw_edma_alloc_desc()
126 	if (unlikely(!desc))  in dw_edma_alloc_desc()
129 	desc->chan = chan;  in dw_edma_alloc_desc()
130 	if (!dw_edma_alloc_chunk(desc)) {  in dw_edma_alloc_desc()
131 		kfree(desc);  in dw_edma_alloc_desc()
135 	return desc;  in dw_edma_alloc_desc()
154 static void dw_edma_free_chunk(struct dw_edma_desc *desc)  in dw_edma_free_chunk()  argument
158 	if (!desc->chunk)  in dw_edma_free_chunk()
162 	list_for_each_entry_safe(child, _next, &desc->chunk->list, list) {  in dw_edma_free_chunk()
166 		desc->chunks_alloc--;  in dw_edma_free_chunk()
171 	desc->chunk = NULL;  in dw_edma_free_chunk()
174 static void dw_edma_free_desc(struct dw_edma_desc *desc)  in dw_edma_free_desc()  argument
176 	dw_edma_free_chunk(desc);  in dw_edma_free_desc()
177 	kfree(desc);  in dw_edma_free_desc()
189 	struct dw_edma_desc *desc;  in dw_edma_start_transfer()  local
196 	desc = vd2dw_edma_desc(vd);  in dw_edma_start_transfer()
197 	if (!desc)  in dw_edma_start_transfer()
200 	child = list_first_entry_or_null(&desc->chunk->list,  in dw_edma_start_transfer()
205 	dw_edma_core_start(dw, child, !desc->xfer_sz);  in dw_edma_start_transfer()
206 	desc->xfer_sz += child->ll_region.sz;  in dw_edma_start_transfer()
210 	desc->chunks_alloc--;  in dw_edma_start_transfer()
330 	struct dw_edma_desc *desc;  in dw_edma_device_tx_status()  local
349 		desc = vd2dw_edma_desc(vd);  in dw_edma_device_tx_status()
350 		if (desc)  in dw_edma_device_tx_status()
351 			residue = desc->alloc_sz - desc->xfer_sz;  in dw_edma_device_tx_status()
369 	struct dw_edma_desc *desc;  in dw_edma_device_transfer()  local
429 	desc = dw_edma_alloc_desc(chan);  in dw_edma_device_transfer()
430 	if (unlikely(!desc))  in dw_edma_device_transfer()
433 	chunk = dw_edma_alloc_chunk(desc);  in dw_edma_device_transfer()
465 			chunk = dw_edma_alloc_chunk(desc);  in dw_edma_device_transfer()
482 		desc->alloc_sz += burst->sz;  in dw_edma_device_transfer()
536 	return vchan_tx_prep(&chan->vc, &desc->vd, xfer->flags);  in dw_edma_device_transfer()
539 	if (desc)  in dw_edma_device_transfer()
540 		dw_edma_free_desc(desc);  in dw_edma_device_transfer()
600 	struct dw_edma_desc *desc;  in dw_edma_done_interrupt()  local
609 			desc = vd2dw_edma_desc(vd);  in dw_edma_done_interrupt()
610 			if (!desc->chunks_alloc) {  in dw_edma_done_interrupt()