From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Huang Subject: [PATCH] Restore the original TX FIFO overflow process. Date: Fri, 22 Sep 2006 15:30:01 -0400 Message-ID: <1158953401.2630.0.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from msr48.hinet.net ([168.95.4.148]:60885 "EHLO msr48.hinet.net") by vger.kernel.org with ESMTP id S1750882AbWIVHoA (ORCPT ); Fri, 22 Sep 2006 03:44:00 -0400 To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, akpm@osdl.org, jgarzik@pobox.com, jesse@icplus.com.tw Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Jesse Huang Change Logs: - Restore the original TX FIFO overflow process. Signed-off-by: Jesse Huang --- drivers/net/sundance.c | 45 +++++++++++++++++++++++++++------------------ 1 files changed, 27 insertions(+), 18 deletions(-) 7d8d60d6b1dbdbc36896148df1cc0242c037d838 diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c index a253924..e68d325 100755 --- a/drivers/net/sundance.c +++ b/drivers/net/sundance.c @@ -21,8 +21,8 @@ */ #define DRV_NAME "sundance" -#define DRV_VERSION "1.01+LK1.14" -#define DRV_RELDATE "04-Aug-2006" +#define DRV_VERSION "1.01+LK1.15" +#define DRV_RELDATE "22-Sep-2006" /* The user-configurable values. @@ -1167,24 +1167,33 @@ static irqreturn_t intr_handler(int irq, if (tx_status & 0x02) np->stats.tx_window_errors++; - /* 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); + /* + ** 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 */ } + /* Restart the Tx. */ + iowrite16 (TxEnable, ioaddr + MACCtrl1); } - + 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); + } + iowrite16 (0, ioaddr + TxStatus); tx_status = ioread16 (ioaddr + TxStatus); if (tx_cnt < 0) -- 1.3.GIT