Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751229AbWHQHQj (ORCPT ); Thu, 17 Aug 2006 03:16:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751218AbWHQHQj (ORCPT ); Thu, 17 Aug 2006 03:16:39 -0400 Received: from msr3.hinet.net ([168.95.4.103]:55205 "EHLO msr3.hinet.net") by vger.kernel.org with ESMTP id S1751180AbWHQHQi (ORCPT ); Thu, 17 Aug 2006 03:16:38 -0400 Subject: [PATCH 2/6] IP100A Fix Tx pause bug From: Jesse Huang To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, akpm@osdl.org, jgarzik@pobox.com, jesse@icplus.com.tw Content-Type: text/plain Date: Thu, 17 Aug 2006 15:04:05 -0400 Message-Id: <1155841445.4532.10.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.0 (2.6.0-1) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3216 Lines: 115 From: Jesse Huang Fix Tx pause bug Change Logs: Fix Tx pause bug --- drivers/net/sundance.c | 49 +++++++++++++++++++++++++++--------------------- 1 files changed, 28 insertions(+), 21 deletions(-) 7e6bffe518096d89a9e7ee9b80f246b3ff442f2e diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c index eb81d91..910ea17 100755 --- a/drivers/net/sundance.c +++ b/drivers/net/sundance.c @@ -262,8 +262,6 @@ enum alta_offsets { ASICCtrl = 0x30, EEData = 0x34, EECtrl = 0x36, - TxStartThresh = 0x3c, - RxEarlyThresh = 0x3e, FlashAddr = 0x40, FlashData = 0x44, TxStatus = 0x46, @@ -1084,6 +1082,8 @@ reset_tx (struct net_device *dev) } /* free all tx skbuff */ 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, @@ -1099,6 +1099,10 @@ reset_tx (struct net_device *dev) } np->cur_tx = np->dirty_tx = 0; np->cur_task = 0; + + np->last_tx=0; + iowrite8(127, ioaddr + TxDMAPollPeriod); + iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1); return 0; } @@ -1156,29 +1160,29 @@ static irqreturn_t intr_handler(int irq, np->stats.tx_fifo_errors++; if (tx_status & 0x02) np->stats.tx_window_errors++; - /* - ** This reset has been verified on - ** DFE-580TX boards ! phdm@macqel.be. - */ - if (tx_status & 0x10) { /* TxUnderrun */ - unsigned short txthreshold; - - txthreshold = ioread16 (ioaddr + TxStartThresh); - /* Restart Tx FIFO and transmitter */ - sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16); - iowrite16 (txthreshold, ioaddr + TxStartThresh); - /* No need to reset the Tx pointer here */ + + /* FIFO ERROR need to be reset tx */ + if (tx_status & 0x10) { /* Reset the Tx. */ + spin_lock(&np->lock); + reset_tx(dev); + spin_unlock(&np->lock); + } + if (tx_status & 0x1e) { + /* need to make sure tx enabled */ + int i = 10; + do { + iowrite16 (ioread16(ioaddr + MACCtrl1) | TxEnable, ioaddr + MACCtrl1); + if (ioread16(ioaddr + MACCtrl1) & TxEnabled) + break; + mdelay(1); + } while (--i); } - /* Restart the Tx. */ - iowrite16 (TxEnable, ioaddr + MACCtrl1); } - /* Yup, this is a documentation bug. It cost me *hours*. */ + iowrite16 (0, ioaddr + TxStatus); - if (tx_cnt < 0) { - iowrite32(5000, ioaddr + DownCounter); - break; - } tx_status = ioread16 (ioaddr + TxStatus); + if (tx_cnt < 0) + break; } hw_frame_id = (tx_status >> 8) & 0xff; } else { @@ -1244,6 +1248,9 @@ static irqreturn_t intr_handler(int irq, if (netif_msg_intr(np)) printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", dev->name, ioread16(ioaddr + IntrStatus)); + + iowrite32(5000, ioaddr + DownCounter); + return IRQ_RETVAL(handled); } -- 1.3.GIT - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/