142 static void pasemi_free_tx_chan(int chan)  in pasemi_free_tx_chan()  argument
144 	BUG_ON(test_bit(chan, txch_free));  in pasemi_free_tx_chan()
145 	set_bit(chan, txch_free);  in pasemi_free_tx_chan()
161 static void pasemi_free_rx_chan(int chan)  in pasemi_free_rx_chan()  argument
163 	BUG_ON(test_bit(chan, rxch_free));  in pasemi_free_rx_chan()
164 	set_bit(chan, rxch_free);  in pasemi_free_rx_chan()
186 	struct pasemi_dmachan *chan;  in pasemi_dma_alloc_chan()  local
195 	chan = buf + offset;  in pasemi_dma_alloc_chan()
197 	chan->priv = buf;  in pasemi_dma_alloc_chan()
202 		chan->chno = chno;  in pasemi_dma_alloc_chan()
203 		chan->irq = irq_create_mapping(NULL,  in pasemi_dma_alloc_chan()
205 		chan->status = &dma_status->rx_sta[chno];  in pasemi_dma_alloc_chan()
209 		chan->chno = chno;  in pasemi_dma_alloc_chan()
210 		chan->irq = irq_create_mapping(NULL, base_hw_irq + chno);  in pasemi_dma_alloc_chan()
211 		chan->status = &dma_status->tx_sta[chno];  in pasemi_dma_alloc_chan()
215 	chan->chan_type = type;  in pasemi_dma_alloc_chan()
217 	return chan;  in pasemi_dma_alloc_chan()
227 void pasemi_dma_free_chan(struct pasemi_dmachan *chan)  in pasemi_dma_free_chan()  argument
229 	if (chan->ring_virt)  in pasemi_dma_free_chan()
230 		pasemi_dma_free_ring(chan);  in pasemi_dma_free_chan()
232 	switch (chan->chan_type & (RXCHAN|TXCHAN)) {  in pasemi_dma_free_chan()
234 		pasemi_free_rx_chan(chan->chno);  in pasemi_dma_free_chan()
237 		pasemi_free_tx_chan(chan->chno);  in pasemi_dma_free_chan()
241 	kfree(chan->priv);  in pasemi_dma_free_chan()
253 int pasemi_dma_alloc_ring(struct pasemi_dmachan *chan, int ring_size)  in pasemi_dma_alloc_ring()  argument
255 	BUG_ON(chan->ring_virt);  in pasemi_dma_alloc_ring()
257 	chan->ring_size = ring_size;  in pasemi_dma_alloc_ring()
259 	chan->ring_virt = dma_alloc_coherent(&dma_pdev->dev,  in pasemi_dma_alloc_ring()
261 					     &chan->ring_dma, GFP_KERNEL);  in pasemi_dma_alloc_ring()
263 	if (!chan->ring_virt)  in pasemi_dma_alloc_ring()
266 	memset(chan->ring_virt, 0, ring_size * sizeof(u64));  in pasemi_dma_alloc_ring()
277 void pasemi_dma_free_ring(struct pasemi_dmachan *chan)  in pasemi_dma_free_ring()  argument
279 	BUG_ON(!chan->ring_virt);  in pasemi_dma_free_ring()
281 	dma_free_coherent(&dma_pdev->dev, chan->ring_size * sizeof(u64),  in pasemi_dma_free_ring()
282 			  chan->ring_virt, chan->ring_dma);  in pasemi_dma_free_ring()
283 	chan->ring_virt = NULL;  in pasemi_dma_free_ring()
284 	chan->ring_size = 0;  in pasemi_dma_free_ring()
285 	chan->ring_dma = 0;  in pasemi_dma_free_ring()
295 void pasemi_dma_start_chan(const struct pasemi_dmachan *chan, const u32 cmdsta)  in pasemi_dma_start_chan()  argument
297 	if (chan->chan_type == RXCHAN)  in pasemi_dma_start_chan()
298 		pasemi_write_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(chan->chno),  in pasemi_dma_start_chan()
301 		pasemi_write_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(chan->chno),  in pasemi_dma_start_chan()
319 int pasemi_dma_stop_chan(const struct pasemi_dmachan *chan)  in pasemi_dma_stop_chan()  argument
324 	if (chan->chan_type == RXCHAN) {  in pasemi_dma_stop_chan()
325 		reg = PAS_DMA_RXCHAN_CCMDSTA(chan->chno);  in pasemi_dma_stop_chan()
336 		reg = PAS_DMA_TXCHAN_TCMDSTA(chan->chno);  in pasemi_dma_stop_chan()
362 void *pasemi_dma_alloc_buf(struct pasemi_dmachan *chan, int size,  in pasemi_dma_alloc_buf()  argument
376 void pasemi_dma_free_buf(struct pasemi_dmachan *chan, int size,  in pasemi_dma_free_buf()  argument