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authorAman Kumar <aman.kumar@intel.com>2023-02-03 17:47:02 +0530
committerVinod Koul <vkoul@kernel.org>2023-02-16 18:45:48 +0530
commite922bbf37564a4c67efca9dd6133eaadbffb65f5 (patch)
tree13b74d35ca3063ba8c3332a9b0819bf78796eea3 /drivers/dma
parent8d1b7bd543833169a5f5f74c4753509ab406f381 (diff)
dmaengine: idma64: Update bytes_transferred field
Currently when 8250 data transfer is done, bytes_tranferred always returns 0 at /sys/devices/pci0000\:\:**.*/dma/dma*chan*/bytes_transferred. In many cases it gives false impression that data is not being trasferred via DMA. So, updating the bytes_transferred field to count the bytes whenever there is data transfer using idma64. Co-developed-by: Srikanth Thokala <srikanth.thokala@intel.com> Signed-off-by: Srikanth Thokala <srikanth.thokala@intel.com> Signed-off-by: Aman Kumar <aman.kumar@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230203121702.15725-1-aman.kumar@intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/idma64.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c
index cd9622f6e59c..0ac634a51c5e 100644
--- a/drivers/dma/idma64.c
+++ b/drivers/dma/idma64.c
@@ -137,8 +137,11 @@ static void idma64_chan_irq(struct idma64 *idma64, unsigned short c,
u32 status_err, u32 status_xfer)
{
struct idma64_chan *idma64c = &idma64->chan[c];
+ struct dma_chan_percpu *stat;
struct idma64_desc *desc;
+ stat = this_cpu_ptr(idma64c->vchan.chan.local);
+
spin_lock(&idma64c->vchan.lock);
desc = idma64c->desc;
if (desc) {
@@ -149,6 +152,7 @@ static void idma64_chan_irq(struct idma64 *idma64, unsigned short c,
dma_writel(idma64, CLEAR(XFER), idma64c->mask);
desc->status = DMA_COMPLETE;
vchan_cookie_complete(&desc->vdesc);
+ stat->bytes_transferred += desc->length;
idma64_start_transfer(idma64c);
}