Previously, such a dump function was used but it wasn't reading
from the PaRAM, rather just from a edmacc_param structure, we
add a helpful function for debugging that directly reads from
the PaRAM and gives the current state correctly (including links
and interrupt information).
Signed-off-by: Joel Fernandes <joelf@xxxxxx>
---
drivers/dma/edma.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 080d669..a242269 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -102,6 +102,37 @@ static void edma_desc_free(struct virt_dma_desc *vdesc)
kfree(container_of(vdesc, struct edma_desc, vdesc));
}
+static inline void dump_pset(struct edma_chan *echan, int slot,
+ struct edmacc_param *pset_unused, int pset_idx)
+{
+ struct edmacc_param pset_local, *pset;
+ pset = &pset_local;
+
+ edma_read_slot(slot, pset);
+
+ dev_dbg(echan->vchan.chan.device->dev,
+ "\n pset[%d]:\n"
+ " chnum\t%d\n"
+ " slot\t%d\n"
+ " opt\t%08x\n"
+ " src\t%08x\n"
+ " dst\t%08x\n"
+ " abcnt\t%08x\n"
+ " ccnt\t%08x\n"
+ " bidx\t%08x\n"
+ " cidx\t%08x\n"
+ " lkrld\t%08x\n",
+ pset_idx, echan->ch_num, slot,
+ pset[0].opt,
+ pset[0].src,
+ pset[0].dst,
+ pset[0].a_b_cnt,
+ pset[0].ccnt,
+ pset[0].src_dst_bidx,
+ pset[0].src_dst_cidx,
+ pset[0].link_bcntrld);
+}
+
/* Dispatch a queued descriptor to the controller (caller holds lock) */
static void edma_execute(struct edma_chan *echan)
{
--
1.7.9.5
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