/**
* sw_dma_dump_chan - dump dma chain
* @dma_hdl: dma handle
*/
void sw_dma_dump_chan(dma_hdl_t dma_hdl)
{
dma_channel_t *pchan = (dma_channel_t *)dma_hdl;
unsigned long flags = 0;
BUG_ON(unlikely(!dma_handle_is_valid(dma_hdl)));
DMA_CHAN_LOCK(&pchan->lock, flags);
dma_dump_chain(pchan);
DMA_CHAN_UNLOCK(&pchan->lock, flags);
}
/**
* __chan_is_free - check if channel is free
* @pchan: dma handle
*
* return true if channel is free, false if not
*
* NOTE: can only be called in sw_dma_request recently, becase
* should be locked
*/
static bool __chan_is_free(dma_channel_t *pchan)
{
if(0 == pchan->used
&& 0 == pchan->owner[0]
//&& CHAN_IRQ_NO == pchan->irq_spt /* maybe not use dma irq? */
&& NULL == pchan->hd_cb.func
&& NULL == pchan->fd_cb.func
&& CHAN_STA_IDLE == pchan->state
)
return true;
else {
dma_dump_chain(pchan);
return false;
}
}
/**
* __dma_check_channel_free - check if channel is free
* @pchan: dma handle
*
* return true if channel is free, false if not
*
* NOTE: can only be called in sw_dma_request recently, becase
* should be locked
*/
static u32 __dma_check_channel_free(dma_channel_t *pchan)
{
if(0 == pchan->used
&& 0 == pchan->owner[0]
//&& CHAN_IRQ_NO == pchan->irq_spt /* maybe not use dma irq? */
&& NULL == pchan->hd_cb.func
&& NULL == pchan->fd_cb.func
&& NULL == pchan->qd_cb.func
&& NULL == pchan->op_cb.func
&& CHAN_STA_IDLE == STATE_CHAIN(pchan)
&& DMA_WORK_MODE_INVALID == pchan->work_mode
)
return true;
else {
dma_dump_chain(pchan);
return false;
}
}
