* [PATCH] stmmac: DMA threshold mode or SF mode can be different among multiple device instance
@ 2015-01-29 8:54 Sonic Zhang
2015-01-29 23:28 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Sonic Zhang @ 2015-01-29 8:54 UTC (permalink / raw)
To: Giuseppe Cavallaro, David S. Miller
Cc: netdev, adi-buildroot-devel, Sonic Zhang
From: Sonic Zhang <sonic.zhang@analog.com>
- In tx_hard_error_bump_tc interrupt, tc should be bumped only when current
device instance is in DMA threshold mode. Check per device xstats.threshold
other than global tc.
- Set per device xstats.threshold to SF_DMA_MODE when current device
instance is set to SF mode.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index cd6ebda..6c87850 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1287,7 +1287,7 @@ static void stmmac_dma_operation_mode(struct stmmac_priv *priv)
* that needs to not insert csum in the TDES.
*/
priv->hw->dma->dma_mode(priv->ioaddr, SF_DMA_MODE, SF_DMA_MODE);
- tc = SF_DMA_MODE;
+ priv->xstats.threshold = SF_DMA_MODE;
} else
priv->hw->dma->dma_mode(priv->ioaddr, tc, SF_DMA_MODE);
}
@@ -1444,7 +1444,8 @@ static void stmmac_dma_interrupt(struct stmmac_priv *priv)
}
if (unlikely(status & tx_hard_error_bump_tc)) {
/* Try to bump up the dma threshold on this failure */
- if (unlikely(tc != SF_DMA_MODE) && (tc <= 256)) {
+ if (unlikely(priv->xstats.threshold != SF_DMA_MODE) &&
+ (tc <= 256)) {
tc += 64;
if (priv->plat->force_thresh_dma_mode)
priv->hw->dma->dma_mode(priv->ioaddr, tc, tc);
--
1.7.9.5
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] stmmac: DMA threshold mode or SF mode can be different among multiple device instance
2015-01-29 8:54 [PATCH] stmmac: DMA threshold mode or SF mode can be different among multiple device instance Sonic Zhang
@ 2015-01-29 23:28 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2015-01-29 23:28 UTC (permalink / raw)
To: sonic.adi; +Cc: peppe.cavallaro, netdev, adi-buildroot-devel, sonic.zhang
From: Sonic Zhang <sonic.adi@gmail.com>
Date: Thu, 29 Jan 2015 16:54:59 +0800
> /* Try to bump up the dma threshold on this failure */
> - if (unlikely(tc != SF_DMA_MODE) && (tc <= 256)) {
> + if (unlikely(priv->xstats.threshold != SF_DMA_MODE) &&
> + (tc <= 256)) {
This is not indented properly. The second line of the conditional
should start precisely at the first column after the openning
parenthesis of the if() statement.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-01-29 8:54 [PATCH] stmmac: DMA threshold mode or SF mode can be different among multiple device instance Sonic Zhang
2015-01-29 23:28 ` David Miller
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