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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BY5PR02MB6772.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 44766338-45a7-499a-eb70-08d84e65eacd X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Sep 2020 10:58:10.9070 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 7bcPBWptU2v3MHehA6ou7TSD85B/FWdzziW1jnKC6JzqR9KyV6XRmQQoBlg5dkFSX+Swa6ZY3jNxLo6dNur1cQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR02MB4789 Received-SPF: pass client-ip=40.107.77.40; envelope-from=saipava@xilinx.com; helo=NAM02-SN1-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/01 06:58:13 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Francisco Eduardo Iglesias , Peter Maydell , Eduardo Habkost , Vikram Garhwal , Markus Armbruster , "qemu-devel@nongnu.org" , Edgar Iglesias , Alistair Francis , =?iso-8859-1?Q?=27Marc-Andr=E9_Lureau=27?= , Ying Fang , Paolo Bonzini , Paul Zimmerman , =?iso-8859-1?Q?=27Philippe_Mathieu-Daud=E9=27?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" HI Gred, > -----Original Message----- > From: Gerd Hoffmann > Sent: Monday, August 31, 2020 12:36 PM > To: Sai Pavan Boddu > Cc: Peter Maydell ; Markus Armbruster > ; 'Marc-Andr=E9 Lureau' > ; Paolo Bonzini ; > Edgar Iglesias ; Francisco Eduardo Iglesias > ; qemu-devel@nongnu.org; Alistair Francis > ; Eduardo Habkost ; > Ying Fang ; 'Philippe Mathieu-Daud=E9' > ; Vikram Garhwal ; Paul > Zimmerman > Subject: Re: [PATCH v4 6/7] usb: Add DWC3 model >=20 > On Sat, Aug 29, 2020 at 12:49:39AM +0530, Sai Pavan Boddu wrote: > > From: Vikram Garhwal > > > > This patch adds skeleton model of dwc3 usb controller attached to > > xhci-sysbus device. >=20 > --verbose. >=20 > This looks like xhci with a bunch of extra registers? [Sai Pavan Boddu]=20 > What these registers are good for? These are also put to make the guest happy. This module contain dwc3 global registers which deal with power management,= phy config and ID registers. And also has Device and OTG registers which are incomplete at present. What I realized is, we could clean many of these registers and only emulate= ID registers at present. As others are meaningless. I would just define a = reserved space, to skip io access errors. Thanks, Sai Pavan >=20 > > +/* > > + * QEMU model of the USB DWC3 host controller emulation. >=20 > (answer should go to both this comment and the commit message). >=20 > thanks, > Gerd