From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kenneth Lee Subject: Re: [RFC PATCH 3/7] vfio: add spimdev support Date: Thu, 2 Aug 2018 11:07:01 +0800 Message-ID: <20180802030701.GI160746@Turing-Arch-b> References: <20180801102221.5308-1-nek.in.cn@gmail.com> <20180801102221.5308-4-nek.in.cn@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: Kenneth Lee , Herbert Xu , kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Jonathan Corbet , Greg Kroah-Hartman , linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Sanjay Kumar , Hao Fang , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linuxarm-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, Alex Williamson , Thomas Gleixner , linux-crypto-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Philippe Ombredanne , Zaibo Xu , "David S . Miller" , linux-accelerators-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org To: Randy Dunlap Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: linux-crypto.vger.kernel.org T24gV2VkLCBBdWcgMDEsIDIwMTggYXQgMDk6MjM6NTJBTSAtMDcwMCwgUmFuZHkgRHVubGFwIHdy b3RlOgo+IERhdGU6IFdlZCwgMSBBdWcgMjAxOCAwOToyMzo1MiAtMDcwMAo+IEZyb206IFJhbmR5 IER1bmxhcCA8cmR1bmxhcEBpbmZyYWRlYWQub3JnPgo+IFRvOiBLZW5uZXRoIExlZSA8bmVrLmlu LmNuQGdtYWlsLmNvbT4sIEpvbmF0aGFuIENvcmJldCA8Y29yYmV0QGx3bi5uZXQ+LAo+ICBIZXJi ZXJ0IFh1IDxoZXJiZXJ0QGdvbmRvci5hcGFuYS5vcmcuYXU+LCAiRGF2aWQgUyAuIE1pbGxlciIK PiAgPGRhdmVtQGRhdmVtbG9mdC5uZXQ+LCBKb2VyZyBSb2VkZWwgPGpvcm9AOGJ5dGVzLm9yZz4s IEFsZXggV2lsbGlhbXNvbgo+ICA8YWxleC53aWxsaWFtc29uQHJlZGhhdC5jb20+LCBLZW5uZXRo 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YXRpb24gY29udGFpbmVkIGhlcmVpbiBpbiBhbnkgd2F5IChpbmNsdWRpbmcsIGJ1dCBub3QgbGlt aXRlZCB0bywgdG90YWwgb3IKcGFydGlhbCBkaXNjbG9zdXJlLCByZXByb2R1Y3Rpb24sIG9yIGRp c3NlbWluYXRpb24pIGJ5IHBlcnNvbnMgb3RoZXIgdGhhbiB0aGUKaW50ZW5kZWQgCnJlY2lwaWVu dChzKSBpcyBwcm9oaWJpdGVkLiBJZiB5b3UgcmVjZWl2ZSB0aGlzIGUtbWFpbCBpbiBlcnJvciwg cGxlYXNlIG5vdGlmeQp0aGUgc2VuZGVyIGJ5IHBob25lIG9yIGVtYWlsIGltbWVkaWF0ZWx5IGFu ZCBkZWxldGUgaXQhCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcK aHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU= 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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 6AE79C28CF6 for ; Thu, 2 Aug 2018 03:08:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 26D1720862 for ; Thu, 2 Aug 2018 03:08:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 26D1720862 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=hisilicon.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726580AbeHBE5c (ORCPT ); Thu, 2 Aug 2018 00:57:32 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:52859 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725765AbeHBE5c (ORCPT ); Thu, 2 Aug 2018 00:57:32 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id CB5FCB90D79D; Thu, 2 Aug 2018 11:08:29 +0800 (CST) Received: from localhost (10.67.212.75) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server (TLS) id 14.3.399.0; Thu, 2 Aug 2018 11:08:21 +0800 Date: Thu, 2 Aug 2018 11:07:01 +0800 From: Kenneth Lee To: Randy Dunlap CC: Kenneth Lee , Jonathan Corbet , Herbert Xu , "David S . Miller" , Joerg Roedel , Alex Williamson , Hao Fang , Zhou Wang , Zaibo Xu , Philippe Ombredanne , Greg Kroah-Hartman , Thomas Gleixner , , , , , , , Lu Baolu , Sanjay Kumar , Subject: Re: [RFC PATCH 3/7] vfio: add spimdev support Message-ID: <20180802030701.GI160746@Turing-Arch-b> References: <20180801102221.5308-1-nek.in.cn@gmail.com> <20180801102221.5308-4-nek.in.cn@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 01, 2018 at 09:23:52AM -0700, Randy Dunlap wrote: > Date: Wed, 1 Aug 2018 09:23:52 -0700 > From: Randy Dunlap > To: Kenneth Lee , Jonathan Corbet , > Herbert Xu , "David S . Miller" > , Joerg Roedel , Alex Williamson > , Kenneth Lee , Hao > Fang , Zhou Wang , Zaibo Xu > , Philippe Ombredanne , Greg > Kroah-Hartman , Thomas Gleixner > , linux-doc@vger.kernel.org, > linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, > iommu@lists.linux-foundation.org, kvm@vger.kernel.org, > linux-accelerators@lists.ozlabs.org, Lu Baolu , > Sanjay Kumar > CC: linuxarm@huawei.com > Subject: Re: [RFC PATCH 3/7] vfio: add spimdev support > User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 > Thunderbird/52.9.1 > Message-ID: > > On 08/01/2018 03:22 AM, Kenneth Lee wrote: > > From: Kenneth Lee > > > > SPIMDEV is "Share Parent IOMMU Mdev". It is a vfio-mdev. But differ from > > the general vfio-mdev: > > > > 1. It shares its parent's IOMMU. > > 2. There is no hardware resource attached to the mdev is created. The > > hardware resource (A `queue') is allocated only when the mdev is > > opened. > > > > Currently only the vfio type-1 driver is updated to make it to be aware > > of. > > > > Signed-off-by: Kenneth Lee > > Signed-off-by: Zaibo Xu > > Signed-off-by: Zhou Wang > > --- > > drivers/vfio/Kconfig | 1 + > > drivers/vfio/Makefile | 1 + > > drivers/vfio/spimdev/Kconfig | 10 + > > drivers/vfio/spimdev/Makefile | 3 + > > drivers/vfio/spimdev/vfio_spimdev.c | 421 ++++++++++++++++++++++++++++ > > drivers/vfio/vfio_iommu_type1.c | 136 ++++++++- > > include/linux/vfio_spimdev.h | 95 +++++++ > > include/uapi/linux/vfio_spimdev.h | 28 ++ > > 8 files changed, 689 insertions(+), 6 deletions(-) > > create mode 100644 drivers/vfio/spimdev/Kconfig > > create mode 100644 drivers/vfio/spimdev/Makefile > > create mode 100644 drivers/vfio/spimdev/vfio_spimdev.c > > create mode 100644 include/linux/vfio_spimdev.h > > create mode 100644 include/uapi/linux/vfio_spimdev.h > > > > diff --git a/drivers/vfio/spimdev/Kconfig b/drivers/vfio/spimdev/Kconfig > > new file mode 100644 > > index 000000000000..1226301f9d0e > > --- /dev/null > > +++ b/drivers/vfio/spimdev/Kconfig > > @@ -0,0 +1,10 @@ > > +# SPDX-License-Identifier: GPL-2.0 > > +config VFIO_SPIMDEV > > + tristate "Support for Share Parent IOMMU MDEV" > > + depends on VFIO_MDEV_DEVICE > > + help > > + Support for VFIO Share Parent IOMMU MDEV, which enable the kernel to > > enables > > > + support for the light weight hardware accelerator framework, WrapDrive. > > support the lightweight hardware accelerator framework, WrapDrive. > > > + > > + To compile this as a module, choose M here: the module will be called > > + spimdev. > > > -- > ~Randy Thanks, I will update it in next version. -- -Kenneth(Hisilicon) ================================================================================ 本邮件及其附件含有华为公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁 止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、或散发）本邮件中 的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！ This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. 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From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-6.0 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable autolearn_force=no version=3.4.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id DE5B77E3B2 for ; Thu, 2 Aug 2018 03:08:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726176AbeHBE5c (ORCPT ); Thu, 2 Aug 2018 00:57:32 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:52859 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725765AbeHBE5c (ORCPT ); Thu, 2 Aug 2018 00:57:32 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id CB5FCB90D79D; Thu, 2 Aug 2018 11:08:29 +0800 (CST) Received: from localhost (10.67.212.75) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server (TLS) id 14.3.399.0; Thu, 2 Aug 2018 11:08:21 +0800 Date: Thu, 2 Aug 2018 11:07:01 +0800 From: Kenneth Lee To: Randy Dunlap CC: Kenneth Lee , Jonathan Corbet , Herbert Xu , "David S . Miller" , Joerg Roedel , Alex Williamson , Hao Fang , Zhou Wang , Zaibo Xu , Philippe Ombredanne , Greg Kroah-Hartman , Thomas Gleixner , , , , , , , Lu Baolu , Sanjay Kumar , Subject: Re: [RFC PATCH 3/7] vfio: add spimdev support Message-ID: <20180802030701.GI160746@Turing-Arch-b> References: <20180801102221.5308-1-nek.in.cn@gmail.com> <20180801102221.5308-4-nek.in.cn@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Wed, Aug 01, 2018 at 09:23:52AM -0700, Randy Dunlap wrote: > Date: Wed, 1 Aug 2018 09:23:52 -0700 > From: Randy Dunlap > To: Kenneth Lee , Jonathan Corbet , > Herbert Xu , "David S . Miller" > , Joerg Roedel , Alex Williamson > , Kenneth Lee , Hao > Fang , Zhou Wang , Zaibo Xu > , Philippe Ombredanne , Greg > Kroah-Hartman , Thomas Gleixner > , linux-doc@vger.kernel.org, > linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, > iommu@lists.linux-foundation.org, kvm@vger.kernel.org, > linux-accelerators@lists.ozlabs.org, Lu Baolu , > Sanjay Kumar > CC: linuxarm@huawei.com > Subject: Re: [RFC PATCH 3/7] vfio: add spimdev support > User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 > Thunderbird/52.9.1 > Message-ID: > > On 08/01/2018 03:22 AM, Kenneth Lee wrote: > > From: Kenneth Lee > > > > SPIMDEV is "Share Parent IOMMU Mdev". It is a vfio-mdev. But differ from > > the general vfio-mdev: > > > > 1. It shares its parent's IOMMU. > > 2. There is no hardware resource attached to the mdev is created. The > > hardware resource (A `queue') is allocated only when the mdev is > > opened. > > > > Currently only the vfio type-1 driver is updated to make it to be aware > > of. > > > > Signed-off-by: Kenneth Lee > > Signed-off-by: Zaibo Xu > > Signed-off-by: Zhou Wang > > --- > > drivers/vfio/Kconfig | 1 + > > drivers/vfio/Makefile | 1 + > > drivers/vfio/spimdev/Kconfig | 10 + > > drivers/vfio/spimdev/Makefile | 3 + > > drivers/vfio/spimdev/vfio_spimdev.c | 421 ++++++++++++++++++++++++++++ > > drivers/vfio/vfio_iommu_type1.c | 136 ++++++++- > > include/linux/vfio_spimdev.h | 95 +++++++ > > include/uapi/linux/vfio_spimdev.h | 28 ++ > > 8 files changed, 689 insertions(+), 6 deletions(-) > > create mode 100644 drivers/vfio/spimdev/Kconfig > > create mode 100644 drivers/vfio/spimdev/Makefile > > create mode 100644 drivers/vfio/spimdev/vfio_spimdev.c > > create mode 100644 include/linux/vfio_spimdev.h > > create mode 100644 include/uapi/linux/vfio_spimdev.h > > > > diff --git a/drivers/vfio/spimdev/Kconfig b/drivers/vfio/spimdev/Kconfig > > new file mode 100644 > > index 000000000000..1226301f9d0e > > --- /dev/null > > +++ b/drivers/vfio/spimdev/Kconfig > > @@ -0,0 +1,10 @@ > > +# SPDX-License-Identifier: GPL-2.0 > > +config VFIO_SPIMDEV > > + tristate "Support for Share Parent IOMMU MDEV" > > + depends on VFIO_MDEV_DEVICE > > + help > > + Support for VFIO Share Parent IOMMU MDEV, which enable the kernel to > > enables > > > + support for the light weight hardware accelerator framework, WrapDrive. > > support the lightweight hardware accelerator framework, WrapDrive. > > > + > > + To compile this as a module, choose M here: the module will be called > > + spimdev. > > > -- > ~Randy Thanks, I will update it in next version. -- -Kenneth(Hisilicon) ================================================================================ 本邮件及其附件含有华为公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁 止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、或散发）本邮件中 的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！ This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. 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