From patchwork Wed Aug 1 08:04:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avri Altman X-Patchwork-Id: 10551813 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BB939157D for ; Wed, 1 Aug 2018 08:05:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AED542AC3D for ; Wed, 1 Aug 2018 08:05:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A2EC32ADEA; Wed, 1 Aug 2018 08:05:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 391DE2AC3D for ; Wed, 1 Aug 2018 08:05:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387404AbeHAJu0 (ORCPT ); Wed, 1 Aug 2018 05:50:26 -0400 Received: from esa1.hgst.iphmx.com ([68.232.141.245]:10293 "EHLO esa1.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733173AbeHAJu0 (ORCPT ); Wed, 1 Aug 2018 05:50:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1533110758; x=1564646758; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=GBkMPIXTe/DZ6emsTs3F0pbrMiZRG2dzgHODKU4Tm30=; b=Pm9eIrr0/mHmLZS+k9CtDetAtBdHT7ldRj/sGyjSuu8EO9McHQhE9+ub rtbJaq08Qm6+fkuFXaiXYWGMlf0isBzP1vKosumJZ248GZuSx3V7aY1w6 kEJuJREn+agmt0UCV1LOYKMnLc+qMoYF5yquh7Jr+YbyAzlFLB46nwvnZ KIWD40h09ONsDhn6bvzQ5YFnnjA8WRBpn3TmcnxkUmiIrK4LWA2JxByyO soBNmF96Mn3yUgxX4kmqY9pzU29noO6JjzEhKVzZa2yOYGpdIS14l2p4e Oq8Hfu2TN+UOs9TR0hQhsKyav/foO8Xq4QsZSROlHdqCRVyhEJZq7F4ws Q==; X-IronPort-AV: E=Sophos;i="5.51,431,1526313600"; d="scan'208";a="189560819" Received: from uls-op-cesaip01.wdc.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 01 Aug 2018 16:05:54 +0800 Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP; 01 Aug 2018 00:54:15 -0700 Received: from kfae422988.sdcorp.global.sandisk.com ([10.0.231.37]) by uls-op-cesaip02.wdc.com with ESMTP; 01 Aug 2018 01:05:47 -0700 From: Avri Altman To: Christoph Hellwig , Johannes Thumshirn , Hannes Reinecke , Bart Van Assche , "James E.J. Bottomley" , "Martin K. Petersen" , linux-scsi@vger.kernel.org Cc: Stanislav Nijnikov , Avi Shchislowski , Alex Lemberg , Subhash Jadavani , Vinayak Holikatti , Avri Altman Subject: [PATCH 0/6] scsi: scsi transport for ufs devices Date: Wed, 1 Aug 2018 11:04:26 +0300 Message-Id: <1533110672-12785-1-git-send-email-avri.altman@wdc.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Here is a proposal to use the scsi transport subsystem to manage ufs devices. scsi transport is a framework that allow to send scsi commands to a non-scsi devices. Still, it is flexible enough to allow sending non-scsi commands as well. We will use this framework to manage ufs devices by sending UPIU transactions. We added a new scsi transport module, a ufs-bsg LLD companion, and some new API to the ufs driver. For the time being, we will not use it for data transfer, but just for device management per-se. We are planning to add this capability in the future. We tested it on a Hikey-960 platform with a V4.14 kernel, "modernized" by recent bsg and ufs patches. We also used a htc11 with a V4.4 kernel, but needed much more transport/bsg/ufs patches to make it relevant. Avri Altman (6): scsi: Add ufs transport class scsi: ufs: Add ufs-bsg module scsi: ufs: Instantiate a ufs transport if its available scsi: ufs: Add API to execute raw upiu commands scsi: ufs-bsg: Add support for raw upiu in ufs_bsg_request() scsi: ufs-bsg: Add support for uic commands in ufs_bsg_request() drivers/scsi/Kconfig | 13 ++ drivers/scsi/Makefile | 1 + drivers/scsi/scsi_transport_ufs.c | 337 ++++++++++++++++++++++++++++++++++++++ drivers/scsi/ufs/Makefile | 1 + drivers/scsi/ufs/ufs_bsg.c | 292 +++++++++++++++++++++++++++++++++ drivers/scsi/ufs/ufs_bsg.h | 76 +++++++++ drivers/scsi/ufs/ufshcd.c | 232 ++++++++++++++++++++++++++ drivers/scsi/ufs/ufshcd.h | 4 + include/scsi/scsi_transport_ufs.h | 40 +++++ include/uapi/scsi/scsi_bsg_ufs.h | 56 +++++++ 10 files changed, 1052 insertions(+) create mode 100644 drivers/scsi/scsi_transport_ufs.c create mode 100644 drivers/scsi/ufs/ufs_bsg.c create mode 100644 drivers/scsi/ufs/ufs_bsg.h create mode 100644 include/scsi/scsi_transport_ufs.h create mode 100644 include/uapi/scsi/scsi_bsg_ufs.h