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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DU0PR04MB9417.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5c110705-f1f6-4b8a-c7b9-08da9baee8ba X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Sep 2022 08:54:35.7203 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Ifj2czsApxPTZBSRzIiBa3K9d8uOYCmFMJZTKGfs0c8CrlqO2DIf7FWqMh2m4J/K1xuhEPhiAyeYpMz7A2Ng0w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB7185 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Arnaud, > Subject: [PATCH v8 0/4] remoteproc: restructure the remoteproc VirtIO > device Sorry to get in at this late time, just try to catch up. Not reviewing comments, just have a question, Does remote core firmware requires changes to use this new feature? Does your 4 branches listed below still work with linux-6.x? Could the multiple vdev still share same mbox channel? I not own i.MX remote core firmware development, so if no need firmware change, I would like give a try and see how it works. Thanks, Peng. >=20 > 1) Update from V7 [1]: >=20 > - rebase on rproc-next branch [2], commit 729c16326b7f ("remoteproc: > imx_dsp_rproc: fix argument 2 of rproc_mem_entry_init") > The updates take into account the integration of the > commit 1404acbb7f68 ("remoteproc: Fix dma_mem leak after > rproc_shutdown") > - add Reviewed-by: Mathieu Poirier according > to reviews on V7 >=20 >=20 > [1] > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Flkml. > org%2Flkml%2F2022%2F7%2F13%2F663&data=3D05%7C01%7Cpeng.fan% > 40nxp.com%7Ce0e5200d739a48e7439508da87599d14%7C686ea1d3bc2b4c > 6fa92cd99c5c301635%7C0%7C0%7C637971116202643149%7CUnknown%7C > TWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiL > CJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3D77pEuwAI7Lh61hx1%2B > Hs79Cu0G5KOa6mzQ0PnTC5r8Xk%3D&reserved=3D0 > [2] > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fgit.k= e > rnel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Fremoteproc%2Flinux.g > it%2Flog%2F%3Fh%3Dfor- > next&data=3D05%7C01%7Cpeng.fan%40nxp.com%7Ce0e5200d739a48e7 > 439508da87599d14%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7 > C637971116202643149%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjA > wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7 > C%7C&sdata=3DiWUSzKkN9BpHwqbO62awIcyVf9PXcftcdt2kytWVR78%3D > &reserved=3D0 >=20 > 2) Patchset description: >=20 > This series is a part of the work initiated a long time ago in the series > "remoteproc: Decorelate virtio from core"[3] >=20 > Objective of the work: > - Update the remoteproc VirtIO device creation (use platform device) > - Allow to declare remoteproc VirtIO device in DT > - declare resources associated to a remote proc VirtIO > - declare a list of VirtIO supported by the platform. > - Prepare the enhancement to more VirtIO devices (e.g I2C, audio, video, = ...). > For instance be able to declare a I2C device in a virtio-i2C node. > - Keep the legacy working! > - Try to improve the picture about concerns reported by Christoph Hellwin= g > [4][5] >=20 > [3] > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Flkml. > org%2Flkml%2F2020%2F4%2F16%2F1817&data=3D05%7C01%7Cpeng.fan > %40nxp.com%7Ce0e5200d739a48e7439508da87599d14%7C686ea1d3bc2b4 > c6fa92cd99c5c301635%7C0%7C0%7C637971116202643149%7CUnknown%7 > CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWw > iLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3DoPWSfUweLdhUFK5X9 > 2YcGHem8s%2Bfelcr%2FHx9JAlKG%2BI%3D&reserved=3D0 > [4] > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Flkml. > org%2Flkml%2F2021%2F6%2F23%2F607&data=3D05%7C01%7Cpeng.fan% > 40nxp.com%7Ce0e5200d739a48e7439508da87599d14%7C686ea1d3bc2b4c > 6fa92cd99c5c301635%7C0%7C0%7C637971116202643149%7CUnknown%7C > TWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiL > CJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3DHPpnlaykes8R1Kz1dEN > nirEHkDNr7JvRs%2FcsaDPuLdI%3D&reserved=3D0 > [5] > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fpatc > hwork.kernel.org%2Fproject%2Flinux- > remoteproc%2Fpatch%2FAOKowLclCbOCKxyiJ71WeNyuAAj2q8EUtxrXbyky5E > %40cp7-web- > 042.plabs.ch%2F&data=3D05%7C01%7Cpeng.fan%40nxp.com%7Ce0e520 > 0d739a48e7439508da87599d14%7C686ea1d3bc2b4c6fa92cd99c5c301635% > 7C0%7C0%7C637971116202643149%7CUnknown%7CTWFpbGZsb3d8eyJWIj > oiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C > 3000%7C%7C%7C&sdata=3DGtNruefDreOoogL%2BlntAC7GBfk6E1Goq4j% > 2BYXt36RdI%3D&reserved=3D0 >=20 > In term of device tree this would result in such hierarchy (stm32mp1 > example with 2 virtio RPMSG): >=20 > m4_rproc: m4@10000000 { > compatible =3D "st,stm32mp1-m4"; > reg =3D <0x10000000 0x40000>, > <0x30000000 0x40000>, > <0x38000000 0x10000>; > memory-region =3D <&retram>, <&mcuram>,<&mcuram2>; > mboxes =3D <&ipcc 2>, <&ipcc 3>; > mbox-names =3D "shutdown", "detach"; > status =3D "okay"; >=20 > #address-cells =3D <1>; > #size-cells =3D <0>; >=20 > vdev@0 { > compatible =3D "rproc-virtio"; > reg =3D <0>; > virtio,id =3D <7>; /* RPMSG */ > memory-region =3D <&vdev0vring0>, <&vdev0vring1>, > <&vdev0buffer>; > mboxes =3D <&ipcc 0>, <&ipcc 1>; > mbox-names =3D "vq0", "vq1"; > status =3D "okay"; > }; >=20 > vdev@1 { > compatible =3D "rproc-virtio"; > reg =3D <1>; > virtio,id =3D <7>; /*RPMSG */ > memory-region =3D <&vdev1vring0>, <&vdev1vring1>, > <&vdev1buffer>; > mboxes =3D <&ipcc 4>, <&ipcc 5>; > mbox-names =3D "vq0", "vq1"; > status =3D "okay"; > }; > }; >=20 > I have divided the work in 4 steps to simplify the review, This series > implements only the step 1: > step 1: Redefine the remoteproc VirtIO device as a platform device > - migrate rvdev management in remoteproc virtio.c, > - create a remotproc virtio config ( can be disabled for platform that = not > use VirtIO IPC. > step 2: Add possibility to declare and probe a VirtIO sub node > - VirtIO bindings declaration, > - multi DT VirtIO devices support, > - introduction of a remote proc virtio bind device mechanism , =3D> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fgithu > b.com%2Farnopo%2Flinux%2Fcommits%2Fstep2-virtio-in- > DT&data=3D05%7C01%7Cpeng.fan%40nxp.com%7Ce0e5200d739a48e74 > 39508da87599d14%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C > 637971116202643149%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAw > MDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C > %7C&sdata=3DXtF%2FQnml3QXFL7rgqST1Z2FotUzoj%2FD57WfiuAVMnr8 > %3D&reserved=3D0 > step 3: Add memory declaration in VirtIO subnode =3D> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fgithu > b.com%2Farnopo%2Flinux%2Fcommits%2Fstep3-virtio- > memories&data=3D05%7C01%7Cpeng.fan%40nxp.com%7Ce0e5200d739 > a48e7439508da87599d14%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7 > C0%7C637971116202643149%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4 > wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000% > 7C%7C%7C&sdata=3D6gq28c6a1TJ%2FdkvokcEjgy6FKQcKTXSz%2BNAbJPo > mjac%3D&reserved=3D0 > step 4: Add mailbox declaration in VirtIO subnode =3D> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fgithu > b.com%2Farnopo%2Flinux%2Fcommits%2Fstep4-virtio- > mailboxes&data=3D05%7C01%7Cpeng.fan%40nxp.com%7Ce0e5200d739 > a48e7439508da87599d14%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7 > C0%7C637971116202643149%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4 > wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000% > 7C%7C%7C&sdata=3Dwfy2euuOPoMmBMIH3BOsGcsEYGSTWsDaRr7ENN > QCK70%3D&reserved=3D0 >=20 > Arnaud Pouliquen (4): > remoteproc: core: Introduce rproc_rvdev_add_device function > remoteproc: core: Introduce rproc_add_rvdev function > remoteproc: Move rproc_vdev management to remoteproc_virtio.c > remoteproc: virtio: Create platform device for the remoteproc_virtio >=20 > drivers/remoteproc/remoteproc_core.c | 154 +++--------------- > drivers/remoteproc/remoteproc_internal.h | 23 ++- > drivers/remoteproc/remoteproc_virtio.c | 189 ++++++++++++++++++++--- > include/linux/remoteproc.h | 6 +- > 4 files changed, 210 insertions(+), 162 deletions(-) >=20 > -- > 2.24.3