mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-05 04:17:32 +02:00
94 lines
3.1 KiB
Diff
94 lines
3.1 KiB
Diff
|
From 382a0b0dc4cbd0e0fbfd6c2d132e972c3d1245b0 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Jonas Gorski <jonas.gorski@gmail.com>
|
||
|
|
Date: Sun, 13 Nov 2011 14:59:37 +0100
|
||
|
|
Subject: [PATCH 39/84] bcm63xx_enet: fix lockup on BCM6328
|
||
|
|
|
||
|
|
BCM6328 locks up on a maxburst size of 16, reduce it to 8 for BCM6328 and
|
||
|
|
BCM6368.
|
||
|
|
|
||
|
|
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
|
||
|
|
---
|
||
|
|
drivers/net/ethernet/broadcom/bcm63xx_enet.c | 13 +++++++------
|
||
|
|
drivers/net/ethernet/broadcom/bcm63xx_enet.h | 4 ++++
|
||
|
|
2 files changed, 11 insertions(+), 6 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
|
||
|
|
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
|
||
|
|
@@ -261,7 +261,6 @@ static int bcm_enet_refill_rx(struct net
|
||
|
|
if (!skb)
|
||
|
|
break;
|
||
|
|
priv->rx_skb[desc_idx] = skb;
|
||
|
|
-
|
||
|
|
p = dma_map_single(&priv->pdev->dev, skb->data,
|
||
|
|
priv->rx_skb_size,
|
||
|
|
DMA_FROM_DEVICE);
|
||
|
|
@@ -995,9 +994,9 @@ static int bcm_enet_open(struct net_devi
|
||
|
|
enet_writel(priv, priv->hw_mtu, ENET_TXMAXLEN_REG);
|
||
|
|
|
||
|
|
/* set dma maximum burst len */
|
||
|
|
- enet_dmac_writel(priv, BCMENET_DMA_MAXBURST,
|
||
|
|
+ enet_dmac_writel(priv, priv->dma_maxburst,
|
||
|
|
ENETDMAC_MAXBURST_REG(priv->rx_chan));
|
||
|
|
- enet_dmac_writel(priv, BCMENET_DMA_MAXBURST,
|
||
|
|
+ enet_dmac_writel(priv, priv->dma_maxburst,
|
||
|
|
ENETDMAC_MAXBURST_REG(priv->tx_chan));
|
||
|
|
|
||
|
|
/* set correct transmit fifo watermark */
|
||
|
|
@@ -1593,7 +1592,7 @@ static int compute_hw_mtu(struct bcm_ene
|
||
|
|
* it's appended
|
||
|
|
*/
|
||
|
|
priv->rx_skb_size = ALIGN(actual_mtu + ETH_FCS_LEN,
|
||
|
|
- BCMENET_DMA_MAXBURST * 4);
|
||
|
|
+ priv->dma_maxburst * 4);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
@@ -1701,6 +1700,7 @@ static int __devinit bcm_enet_probe(stru
|
||
|
|
priv = netdev_priv(dev);
|
||
|
|
|
||
|
|
priv->enet_is_sw = false;
|
||
|
|
+ priv->dma_maxburst = BCMENET_DMA_MAXBURST;
|
||
|
|
|
||
|
|
ret = compute_hw_mtu(priv, dev->mtu);
|
||
|
|
if (ret)
|
||
|
|
@@ -2282,9 +2282,9 @@ static int bcm_enetsw_open(struct net_de
|
||
|
|
enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG(priv->tx_chan));
|
||
|
|
|
||
|
|
/* set dma maximum burst len */
|
||
|
|
- enet_dmac_writel(priv, BCMENET_DMA_MAXBURST,
|
||
|
|
+ enet_dmac_writel(priv, priv->dma_maxburst,
|
||
|
|
ENETDMAC_MAXBURST_REG(priv->rx_chan));
|
||
|
|
- enet_dmac_writel(priv, BCMENET_DMA_MAXBURST,
|
||
|
|
+ enet_dmac_writel(priv, priv->dma_maxburst,
|
||
|
|
ENETDMAC_MAXBURST_REG(priv->tx_chan));
|
||
|
|
|
||
|
|
/* set flow control low/high threshold to 1/3 / 2/3 */
|
||
|
|
@@ -2749,6 +2749,7 @@ static int __devinit bcm_enetsw_probe(st
|
||
|
|
priv->irq_tx = irq_tx;
|
||
|
|
priv->rx_ring_size = BCMENET_DEF_RX_DESC;
|
||
|
|
priv->tx_ring_size = BCMENET_DEF_TX_DESC;
|
||
|
|
+ priv->dma_maxburst = BCMENETSW_DMA_MAXBURST;
|
||
|
|
|
||
|
|
pd = pdev->dev.platform_data;
|
||
|
|
if (pd) {
|
||
|
|
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.h
|
||
|
|
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.h
|
||
|
|
@@ -17,6 +17,7 @@
|
||
|
|
|
||
|
|
/* maximum burst len for dma (4 bytes unit) */
|
||
|
|
#define BCMENET_DMA_MAXBURST 16
|
||
|
|
+#define BCMENETSW_DMA_MAXBURST 8
|
||
|
|
|
||
|
|
/* tx transmit threshold (4 bytes unit), fifo is 256 bytes, the value
|
||
|
|
* must be low enough so that a DMA transfer of above burst length can
|
||
|
|
@@ -280,6 +281,9 @@ struct bcm_enet_priv {
|
||
|
|
/* number of dma desc in tx ring */
|
||
|
|
int tx_ring_size;
|
||
|
|
|
||
|
|
+ /* maximum dma burst size */
|
||
|
|
+ int dma_maxburst;
|
||
|
|
+
|
||
|
|
/* cpu view of rx dma ring */
|
||
|
|
struct bcm_enet_desc *tx_desc_cpu;
|
||
|
|
|