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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4DCE6C433FE for ; Wed, 9 Nov 2022 21:00:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231527AbiKIVAZ (ORCPT ); Wed, 9 Nov 2022 16:00:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56162 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232077AbiKIVAA (ORCPT ); Wed, 9 Nov 2022 16:00:00 -0500 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 143774C24A; Wed, 9 Nov 2022 12:57:20 -0800 (PST) Received: by mail-pl1-f174.google.com with SMTP id c2so18209166plz.11; Wed, 09 Nov 2022 12:57:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=uD0GBYBsoiz/gWYARSVIf2ZmCuLIn6//Vw6TLDyyaDk=; b=Vhftjzmfu0SwLsWMSWiAsWr7oVd9GDkoEvhUSY+LdAbvxs7rWAL+3Y29c3egfF9cti qmmleqrPaV8fyvfGhbZpR1I3IaoYMH/j8HRQcJz71LtkQOTZgVtYDs+BmbAeF4uqDMXz g7yG0skx2FTge0wbhYaS5MMFezv+E11qS/K6faJsQ3j+K5T9mBfOy8Ak2NyHIvXScSlM TO6wOvQIgWrfwfir8zw7IXYDeJHVFyEOSn4SjD8lx0d5jRmCitoAtbKuW3eBpQeVHkha KcSTDpyuigKJep2oLawcVOG4kHM5azQVrkPb9G3wUahUxrnItBIWzONjdik8yKBPlf7l y0DQ== X-Gm-Message-State: ACrzQf2ovskXeqTz6rBtmvHIPxkuebuccBbSnSCZr/j0KcJj74Cnc4rL ++3Ls5726I7fkJvVK102E/c= X-Google-Smtp-Source: AMsMyM6p5H47cPIfuFBoHxSrzEpBlvA/rTkDEywkBb3sGm2Kl+Ps8iLYUi4EJ4PlEY27+/wEAy0czg== X-Received: by 2002:a17:90a:db09:b0:212:ec36:4d04 with SMTP id g9-20020a17090adb0900b00212ec364d04mr1243701pjv.158.1668027417839; Wed, 09 Nov 2022 12:56:57 -0800 (PST) Received: from ?IPV6:2620:15c:211:201:68b6:5dae:a00c:c3b? ([2620:15c:211:201:68b6:5dae:a00c:c3b]) by smtp.gmail.com with ESMTPSA id q32-20020a17090a4fa300b0020ad86f4c54sm1682505pjh.16.2022.11.09.12.56.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Nov 2022 12:56:57 -0800 (PST) Message-ID: <310d25c7-1a7b-2770-8f47-9ad21ef12ffd@acm.org> Date: Wed, 9 Nov 2022 12:56:54 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 Subject: Re: [PATCH v4 02/16] ufs: core: Probe for ext_iid support Content-Language: en-US To: Asutosh Das , quic_cang@quicinc.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org Cc: quic_nguyenb@quicinc.com, quic_xiaosenh@quicinc.com, stanley.chu@mediatek.com, eddie.huang@mediatek.com, daejun7.park@samsung.com, avri.altman@wdc.com, mani@kernel.org, beanhuo@micron.com, linux-arm-msm@vger.kernel.org, Alim Akhtar , "James E.J. Bottomley" , Jinyoung Choi , Kiwoong Kim , open list References: <94a483673c3c7e03d8897fffd6e6145027979517.1668022680.git.quic_asutoshd@quicinc.com> From: Bart Van Assche In-Reply-To: <94a483673c3c7e03d8897fffd6e6145027979517.1668022680.git.quic_asutoshd@quicinc.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/9/22 11:41, Asutosh Das wrote: > Task Tag is limited to 8 bits and this restricts the number > of active IOs to 255. > In Multi-circular queue mode, this may not be enough. > The specification provides EXT_IID which can be used to increase > the number of IOs if the UFS device and UFSHC support it. > This patch adds support to probe for ext_iid support in > ufs device and UFSHC. Reviewed-by: Bart Van Assche