From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: [PATCH 3/3] sky2: turn of dynamic Tx watermark workaround (FE+ only) Date: Tue, 27 Nov 2007 11:02:07 -0800 Message-ID: <20071127110207.0d65e820@freepuppy.rosehill> References: <20071127105727.1bcfa56f@freepuppy.rosehill> <20071127110036.0268c0a9@freepuppy.rosehill> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, Tim Gardner To: Jeff Garzik Return-path: Received: from smtp2.linux-foundation.org ([207.189.120.14]:38159 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757944AbXK0WKb (ORCPT ); Tue, 27 Nov 2007 17:10:31 -0500 In-Reply-To: <20071127110036.0268c0a9@freepuppy.rosehill> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Add workaround for issues FE+ (A0) transmit watermark. This is copied verbatim from vendor driver sk98lin (10.22.4.3). Don't have that chip version and no more information seems to be available. Signed-off-by: Stephen Hemminger --- a/drivers/net/sky2.c 2007-11-26 14:02:36.000000000 -0800 +++ b/drivers/net/sky2.c 2007-11-26 14:28:47.000000000 -0800 @@ -845,6 +845,13 @@ static void sky2_mac_init(struct sky2_hw sky2_set_tx_stfwd(hw, port); } + if (hw->chip_id == CHIP_ID_YUKON_FE_P && + hw->chip_rev == CHIP_REV_YU_FE2_A0) { + /* disable dynamic watermark */ + reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA)); + reg &= ~TX_DYN_WM_ENA; + sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg); + } } /* Assign Ram Buffer allocation to queue */