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Simple PCIe FMC carrier SPEC
Commit a1a8d2cb authored by Federico Vaga's avatar Federico Vaga
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sw:drv:dma: split DMA control func 

Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
parent 4f2c8eaf
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Showing with 34 additions and 19 deletions
software/kernel/spec-gn412x-dma.c
View file @ a1a8d2cb
......@@ -183,7 +183,7 @@ struct gn412x_dma_tx_hw {
* @pending_list: list of pending transfers
* @tx_curr: current transfer
* @task: tasklet for DMA start
* @lock: protects the pending_list and tx_curr from concurrent changes
* @lock: protects: pending_list, tx_curr, sconfig
* @sconfig: channel configuration to be used
* @error: number of errors detected
*/
......@@ -539,30 +539,45 @@ static enum dma_status gn412x_dma_tx_status(struct dma_chan *chan,
return DMA_ERROR;
}
static int gn412x_dma_slave_config(struct dma_chan *chan,
struct dma_slave_config *sconfig)
{
struct gn412x_dma_chan *gn412x_dma_chan = to_gn412x_dma_chan(chan);
unsigned long flags;
spin_lock_irqsave(&gn412x_dma_chan->lock, flags);
memcpy(&gn412x_dma_chan->sconfig, sconfig,
sizeof(struct dma_slave_config));
spin_unlock_irqrestore(&gn412x_dma_chan->lock, flags);
return 0;
}
static int gn412x_dma_terminate_all(struct dma_chan *chan)
{
struct gn412x_dma_device *gn412x_dma = to_gn412x_dma_device(chan->device);
gn412x_dma_ctrl_abort(gn412x_dma);
/* FIXME remove all pending */
if (!gn412x_dma_is_abort(gn412x_dma)) {
dev_err(&gn412x_dma->pdev->dev,
"Failed to abort DMA transfer\n");
return -EINVAL;
}
return 0;
}
static int gn412x_dma_device_control(struct dma_chan *chan,
enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct gn412x_dma_device *gn412x_dma = to_gn412x_dma_device(chan->device);
switch (cmd) {
case DMA_SLAVE_CONFIG: {
struct gn412x_dma_chan *gn412x_dma_chan = to_gn412x_dma_chan(chan);
struct dma_slave_config *sconfig = (struct dma_slave_config *)arg;
memcpy(&gn412x_dma_chan->sconfig, sconfig,
sizeof(struct dma_slave_config));
break;
}
case DMA_SLAVE_CONFIG:
return gn412x_dma_slave_config(chan,
(struct dma_slave_config *)arg);
case DMA_TERMINATE_ALL:
gn412x_dma_ctrl_abort(gn412x_dma);
/* FIXME remove all pending */
if (!gn412x_dma_is_abort(gn412x_dma)) {
dev_err(&gn412x_dma->pdev->dev,
"Failed to abort DMA transfer\n");
return -EINVAL;
}
break;
return gn412x_dma_terminate_all(chan);
case DMA_PAUSE:
break;
case DMA_RESUME:
......
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