From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6EAE2CA9EC0 for ; Wed, 30 Oct 2019 06:16:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 366DC2067D for ; Wed, 30 Oct 2019 06:16:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="QnPtQgN2"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="QnPtQgN2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727176AbfJ3GQw (ORCPT ); Wed, 30 Oct 2019 02:16:52 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:50612 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727125AbfJ3GQw (ORCPT ); Wed, 30 Oct 2019 02:16:52 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id EB19D60F5E; Wed, 30 Oct 2019 06:16:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1572416211; bh=IgyGKLGNT89B33oQraHU/asdxUwmWTKhlEwPQxbrLt8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=QnPtQgN2gnebrVx0mLoDiLQmIQQU0N5NCKI03K/ZeacRgzFq0JiFJ5OdWaVgJLbvJ dB66tLxsOmtczO9i1LSX0B3zyAB+JEB+I4mOY2L6m1tg8/wUZrBaTMvwItbfcWZ8QR UOO/SmxvrlmNAKGMC0o4stCtXMOE1yleBiTcNzVU= Received: from mail.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id A6A9260A97; Wed, 30 Oct 2019 06:16:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1572416211; bh=IgyGKLGNT89B33oQraHU/asdxUwmWTKhlEwPQxbrLt8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=QnPtQgN2gnebrVx0mLoDiLQmIQQU0N5NCKI03K/ZeacRgzFq0JiFJ5OdWaVgJLbvJ dB66tLxsOmtczO9i1LSX0B3zyAB+JEB+I4mOY2L6m1tg8/wUZrBaTMvwItbfcWZ8QR UOO/SmxvrlmNAKGMC0o4stCtXMOE1yleBiTcNzVU= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Wed, 30 Oct 2019 14:16:51 +0800 From: zhichen@codeaurora.org To: Peter Oh Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org Subject: Re: [PATCH RFC] Revert "ath10k: fix DMA related firmware crashes on multiple devices" In-Reply-To: References: <1571734629-18028-1-git-send-email-zhichen@codeaurora.org> Message-ID: <8c6d531f6474faf4df55f90185466774@codeaurora.org> X-Sender: zhichen@codeaurora.org User-Agent: Roundcube Webmail/1.2.5 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On 2019-10-23 01:16, Peter Oh wrote: > > How can you say value 0 (I believe it's 64 bytes) DMA burst size > causes the symptom and 1 fixes it? > > Peter Confirmed from HW team that the configuration controls AXI burst size of the RD/WR access to the HOST MEM. 0- No split , RAW read/write transfer size from MAC is put out on bus as burst length. 1- Split at 256 byte boundary 2,3- Reserved That's why we see issue with value 0. Zhi From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iPhHp-0005YD-L0 for ath10k@lists.infradead.org; Wed, 30 Oct 2019 06:16:54 +0000 MIME-Version: 1.0 Date: Wed, 30 Oct 2019 14:16:51 +0800 From: zhichen@codeaurora.org Subject: Re: [PATCH RFC] Revert "ath10k: fix DMA related firmware crashes on multiple devices" In-Reply-To: References: <1571734629-18028-1-git-send-email-zhichen@codeaurora.org> Message-ID: <8c6d531f6474faf4df55f90185466774@codeaurora.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Peter Oh Cc: linux-wireless@vger.kernel.org, ath10k@lists.infradead.org On 2019-10-23 01:16, Peter Oh wrote: > > How can you say value 0 (I believe it's 64 bytes) DMA burst size > causes the symptom and 1 fixes it? > > Peter Confirmed from HW team that the configuration controls AXI burst size of the RD/WR access to the HOST MEM. 0- No split , RAW read/write transfer size from MAC is put out on bus as burst length. 1- Split at 256 byte boundary 2,3- Reserved That's why we see issue with value 0. Zhi _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k