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Thu, 24 Oct 2024 15:59:08 +0000 From: Jerin Jacob <jerinj@marvell.com> To: Akhil Goyal <gakhil@marvell.com>, "dev@dpdk.org" <dev@dpdk.org> CC: "thomas@monjalon.net" <thomas@monjalon.net>, "david.marchand@redhat.com" <david.marchand@redhat.com>, "hemant.agrawal@nxp.com" <hemant.agrawal@nxp.com>, Harman Kalra <hkalra@marvell.com>, "stephen@networkplumber.org" <stephen@networkplumber.org>, "sachin.saxena@oss.nxp.com" <sachin.saxena@oss.nxp.com>, "ferruh.yigit@amd.com" <ferruh.yigit@amd.com>, Akhil Goyal <gakhil@marvell.com> Subject: RE: [PATCH v5 1/9] drivers/raw: introduce cnxk rvu lf device driver Thread-Topic: [PATCH v5 1/9] drivers/raw: introduce cnxk rvu lf device driver Thread-Index: AQHbJhcu5Gxdk9qyHU6NZ61pS4aRS7KWDUBw Date: Thu, 24 Oct 2024 15:59:08 +0000 Message-ID: <BY3PR18MB478553775834BDC44583B13EC84E2@BY3PR18MB4785.namprd18.prod.outlook.com> References: <20241024130130.3330978-1-gakhil@marvell.com> <20241024131759.3337333-1-gakhil@marvell.com> <20241024131759.3337333-2-gakhil@marvell.com> In-Reply-To: <20241024131759.3337333-2-gakhil@marvell.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-publictraffictype: Email x-ms-traffictypediagnostic: BY3PR18MB4785:EE_|PH7PR18MB5826:EE_ x-ms-office365-filtering-correlation-id: 387c81eb-9193-4703-e999-08dcf444cb54 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: marvell.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BY3PR18MB4785.namprd18.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 387c81eb-9193-4703-e999-08dcf444cb54 X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Oct 2024 15:59:08.5651 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: pBFe2itN4fFNr7luY5Wtle9d2R/+ciK6WP9h8gMxnHfQiNcPYArTVy69HMB6uyE5L9ToXkl34pGVfBVQIjriMA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR18MB5826 X-Proofpoint-ORIG-GUID: f_i2KmNG6ibJzu96oMMpMtYSUyfH3ldX X-Proofpoint-GUID: f_i2KmNG6ibJzu96oMMpMtYSUyfH3ldX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.687,Hydra:6.0.235,FMLib:17.0.607.475 definitions=2020-10-13_15,2020-10-13_02,2020-04-07_01 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org > -----Original Message----- > From: Akhil Goyal <gakhil@marvell.com> > Sent: Thursday, October 24, 2024 6:48 PM > To: dev@dpdk.org > Cc: thomas@monjalon.net; david.marchand@redhat.com; > hemant.agrawal@nxp.com; Jerin Jacob <jerinj@marvell.com>; Harman Kalra > <hkalra@marvell.com>; stephen@networkplumber.org; > sachin.saxena@oss.nxp.com; ferruh.yigit@amd.com; Akhil Goyal > <gakhil@marvell.com> > Subject: [PATCH v5 1/9] drivers/raw: introduce cnxk rvu lf device driver >=20 > CNXK product families can have a use case to allow PF and VF applications= to > communicate using mailboxes and also get notified of any interrupt that m= ay > occur on the device. > Hence, a new raw device driver is added for such RVU LF devices. > These devices can map to a PF or a VF which can send mailboxes to each ot= her. >=20 > Signed-off-by: Akhil Goyal <gakhil@marvell.com> > --- _> + > NTB > M: Jingjing Wu <jingjing.wu@intel.com> > F: drivers/raw/ntb/ > diff --git a/doc/guides/rawdevs/cnxk_rvu_lf.rst > b/doc/guides/rawdevs/cnxk_rvu_lf.rst > new file mode 100644 > index 0000000000..8a0bc22dd5 > --- /dev/null > +++ b/doc/guides/rawdevs/cnxk_rvu_lf.rst > @@ -0,0 +1,40 @@ > +.. SPDX-License-Identifier: BSD-3-Clause > + Copyright(c) 2024 Marvell. > + > +Marvell CNXK RVU LF Driver > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D > + > +CNXK product families can have a use case to allow PF and VF PF and VF -> RVU PF and RVU VF > +applications to communicate using mailboxes and also get notified of Applications-> driver > +any interrupt that may occur on the device. > +Hence, a new raw device driver is added for such RVU LF devices. > +These devices can map to a PF or a VF which can send mailboxes to each > +other. > + > +Features > +-------- > + > +The RVU LF device implements following features in the rawdev API: > + > +- Register mailbox callbacks for the other side to process mailboxes. > +- Register interrupt handler callbacks. > +- Process mailbox. > +- Set range of message IDs allowed for communication. Please update each lines in the respective patch. Also, please wire this file to doc/guides/platform/cnxk.rst like other cnx= k drivers > + > +Limitations > +----------- > + > +In multiprocess mode user-space application must ensure no resources > +sharing takes place. > +Otherwise, user-space application should ensure synchronization. > + > +Device Setup > +------------ > + > +The RVU LF devices will need to be bound to a user-space IO driver for u= se. > +The script ``dpdk-devbind.py`` included with DPDK can be used to view > +the state of the devices and to bind them to a suitable DPDK-supported > +kernel driver. When querying the status of the devices, they will > +appear under the category of "Misc (rawdev) devices", i.e. the command > +``dpdk-devbind.py --status-dev misc`` can be used to see the state of > +those devices alone.