From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Huang Subject: [PATCH 1/5] remove TxStartThresh and RxEarlyThresh Date: Sat, 14 Oct 2006 15:55:25 -0400 Message-ID: <1160855725.2266.1.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from msr7.hinet.net ([168.95.4.107]:49337 "EHLO msr7.hinet.net") by vger.kernel.org with ESMTP id S1161003AbWJNILM (ORCPT ); Sat, 14 Oct 2006 04:11:12 -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: For patent issue need to remove TxStartThresh and RxEarlyThresh. This patent is cut-through patent. If use this function, Tx will start to transmit after few data be move in to Tx FIFO. We are not allow to use those function in DFE530/DFE550/DFE580/DL10050/IP100/IP100A. It will decrease a little performance. Signed-off-by: Jesse Huang --- drivers/net/sundance.c | 8 ++------ 1 files changed, 2 insertions(+), 6 deletions(-) 3751714e0fc36905c87a230172d9561c29321833 diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c index 6b8f4ba..a5dd1c3 100755 --- a/drivers/net/sundance.c +++ b/drivers/net/sundance.c @@ -264,8 +264,6 @@ enum alta_offsets { ASICCtrl = 0x30, EEData = 0x34, EECtrl = 0x36, - TxStartThresh = 0x3c, - RxEarlyThresh = 0x3e, FlashAddr = 0x40, FlashData = 0x44, TxStatus = 0x46, @@ -1111,6 +1109,7 @@ static irqreturn_t intr_handler(int irq, int tx_cnt; int tx_status; int handled = 0; + int i; do { @@ -1153,17 +1152,14 @@ 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 */ } /* Restart the Tx. */ -- 1.3.GIT