From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Huang Subject: [PATCH 6/6] IP100A Solve host error problem when in low performance embedded Date: Thu, 17 Aug 2006 15:09:40 -0400 Message-ID: <1155841780.4532.21.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, akpm@osdl.org, jgarzik@pobox.com, jesse@icplus.com.tw Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Jesse Huang Solve host error problem when in low performance embedded Change Logs: Solve host error problem when in low performance embedded --- drivers/net/sundance.c | 26 ++++++++++++++++++++++---- 1 files changed, 22 insertions(+), 4 deletions(-) 78ff57ea887c19b7552342e990375f5e2bb10af9 diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c index c7c22f0..94ba6ca 100755 --- a/drivers/net/sundance.c +++ b/drivers/net/sundance.c @@ -1075,7 +1075,7 @@ reset_tx (struct net_device *dev) struct sk_buff *skb; int i; int irq = in_interrupt(); - + tasklet_kill(&np->tx_tasklet); /* Reset tx logic, TxListPtr will be cleaned */ iowrite16 (TxDisable, ioaddr + MACCtrl1); iowrite16 (TxReset | DMAReset | FIFOReset | NetworkReset, @@ -1646,6 +1646,13 @@ static int netdev_close(struct net_devic struct sk_buff *skb; int i; + /* Wait and kill tasklet */ + tasklet_kill(&np->rx_tasklet); + tasklet_kill(&np->tx_tasklet); + np->cur_tx = np->dirty_tx = 0; + np->cur_task = 0; + np->last_tx=0; + netif_stop_queue(dev); if (netif_msg_ifdown(np)) { @@ -1666,9 +1673,19 @@ static int netdev_close(struct net_devic /* Stop the chip's Tx and Rx processes. */ iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1); - /* Wait and kill tasklet */ - tasklet_kill(&np->rx_tasklet); - tasklet_kill(&np->tx_tasklet); + for(i=2000;i> 0;i--) { + if((readl(ioaddr + DMACtrl)&0xC000) == 0)break; + mdelay(1); + } + + writew(GlobalReset | DMAReset | FIFOReset |NetworkReset, ioaddr +ASICCtrl + 2); + + for(i=2000;i >0;i--) + { + if((readw(ioaddr + ASICCtrl +2)&ResetBusy) == 0) + break; + mdelay(1); + } #ifdef __i386__ if (netif_msg_hw(np)) { @@ -1706,6 +1723,7 @@ #endif /* __i386__ debugging only */ } } for (i = 0; i < TX_RING_SIZE; i++) { + np->tx_ring[i].next_desc=0; skb = np->tx_skbuff[i]; if (skb) { pci_unmap_single(np->pci_dev, -- 1.3.GIT