Lines Matching refs:dma
9 #include "dma.h"
11 int qce_dma_request(struct device *dev, struct qce_dma_data *dma)
15 dma->txchan = dma_request_chan(dev, "tx");
16 if (IS_ERR(dma->txchan))
17 return PTR_ERR(dma->txchan);
19 dma->rxchan = dma_request_chan(dev, "rx");
20 if (IS_ERR(dma->rxchan)) {
21 ret = PTR_ERR(dma->rxchan);
25 dma->result_buf = kmalloc(QCE_RESULT_BUF_SZ + QCE_IGNORE_BUF_SZ,
27 if (!dma->result_buf) {
32 dma->ignore_buf = dma->result_buf + QCE_RESULT_BUF_SZ;
36 dma_release_channel(dma->rxchan);
38 dma_release_channel(dma->txchan);
42 void qce_dma_release(struct qce_dma_data *dma)
44 dma_release_channel(dma->txchan);
45 dma_release_channel(dma->rxchan);
46 kfree(dma->result_buf);
99 int qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *rx_sg,
103 struct dma_chan *rxchan = dma->rxchan;
104 struct dma_chan *txchan = dma->txchan;
117 void qce_dma_issue_pending(struct qce_dma_data *dma)
119 dma_async_issue_pending(dma->rxchan);
120 dma_async_issue_pending(dma->txchan);
123 int qce_dma_terminate_all(struct qce_dma_data *dma)
127 ret = dmaengine_terminate_all(dma->rxchan);
128 return ret ?: dmaengine_terminate_all(dma->txchan);