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Wed, 9 Feb 2022 04:09:59 +0000 Received: from PH0PR05MB8750.namprd05.prod.outlook.com ([fe80::481b:b966:b6e0:db51]) by PH0PR05MB8750.namprd05.prod.outlook.com ([fe80::481b:b966:b6e0:db51%9]) with mapi id 15.20.4975.011; Wed, 9 Feb 2022 04:09:59 +0000 From: "Antony Abee" To: "devel@edk2.groups.io" Subject: XhciDxe driver not driving USB controller connected in Pcie switch Thread-Topic: XhciDxe driver not driving USB controller connected in Pcie switch Thread-Index: AQHYHWq/vB03m/fHRUCi+JccZE3T8Q== Date: Wed, 9 Feb 2022 04:09:59 +0000 Message-ID: Accept-Language: en-IN, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: suggested_attachment_session_id: 9cd91973-9c3d-2a99-4224-95a65f853800 authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=adlinktech.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 903d229e-f8d0-444f-a942-08d9eb8209d8 x-ms-traffictypediagnostic: BN6PR05MB3124:EE_ x-ms-exchange-atpmessageproperties: SA|SL x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; 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boundary="_000_PH0PR05MB87506061EF49EC4093D7BCAEF82E9PH0PR05MB8750namp_" --_000_PH0PR05MB87506061EF49EC4093D7BCAEF82E9PH0PR05MB8750namp_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, We are using a custom board based on Ampere SOC. We have two Renesas USB co= ntroller uPD720201 in our setup. 1. Renesas USB controller on custom module based on Ampere SOC. - Connected to Pcie Root complex port directly. 2. Renesas USB controller on custom carrier board. - Connected to Pericom Pcie Switch (PI7C9X2G) and the switch in-turn connected to another Pcie Root complex port. We are using the below driver for downloading the USB controller firmware. https://github.com/Linaro/OpenPlatformPkg/tree/4edacd6541c22eac97098c9f6818= 6438e775fb0c/Drivers/Xhci/RenesasFirmwarePD720202 This driver will just download the firmware for the controller. It will not= drive the device. This driver will be called in preference, and XhciDxe will be invoked after RenesasPD720202DriverSupported returns EFI_UNSUPPORTED. Firmware downloading successfully and device is driven successfully with Xh= ciDxe for the device connected directly in Pcie Root complex port. Issues with USB controller connected in Pcie switch: RenesasFirmwarePD720202 driver: For USB controller connected in Pcie switch, firmware is not downloading as= the device handle is not passed to Supported() function during ExitBootSer= vice (ConnectController()) of edk2. NOTE: Device is detected during pci bus enumeration. Also verified device d= etection in uefi shell using "pci" command. We did a workaround implementation which will do pci bus scan to detect the= USB controller connected in Pcie switch and download the firmware. Device = detected and firmware downloaded successfully. But still the USB devices (mass storage/keyboard) are not detecting in Setu= p page and Uefi Shell. We feel the XhciDxe driver did not drive this device as only the parent dev= ices handle passed to this driver. NOTE: USB ports are active, devices detected and working well in OS side. We feel the Xhci driver in OS, drives the USB controller device when the co= ntroller has firmware. How to pass the device handle for the USB controller connected in Pcie swit= ch during ExitBootService ? We understand if RenesasFirmwarePD720202 driver and XhciDxe get the device = handle for the USB controller that is connected in Pcie switch, the above m= entioned issues will get resolved. Please advise if our understanding is wr= ong here. Please provide your inputs. Thanks, Antony --_000_PH0PR05MB87506061EF49EC4093D7BCAEF82E9PH0PR05MB8750namp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 
Hi,=0A=
=0A=
We are using a custom board based on Ampere SOC. We have two Renesas USB co=
ntroller uPD720201 in our setup.=0A=
=0A=
1. Renesas USB controller on custom module based on Ampere SOC.=0A=
       - Connected to Pcie Root complex port directly.=
=0A=
=0A=
2. Renesas USB controller on custom carrier board.=0A=
       - Connected to Pericom Pcie Switch (PI7C9X2G) an=
d the switch in-turn=0A=
         connected to another Pcie Root complex po=
rt.=0A=
=0A=
We are using the below driver for downloading the USB controller firmware.<=
/span>=0A=
https://github.com/Linaro/OpenPlatformPkg/tree/4edacd654=
1c22eac97098c9f68186438e775fb0c/Drivers/Xhci/RenesasFirmwarePD720202=0A=
=0A=
This driver will just download the firmware for the controller. It will not=
 drive the device.=0A=
This driver will be called in preference, and XhciDxe will be invoked=0A=
after RenesasPD720202DriverSupported returns EFI_UNSUPPORTED.=0A=
=0A=
Firmware downloading successfully and device is driven successfully with Xh=
ciDxe for the device connected directly in Pcie Root complex port.=0A=
=0A=
Issues with USB controller connected in Pcie switch:=0A=
=0A=
RenesasFirmwarePD720202 driver:=0A=
For USB controller connected in Pcie switch, firmware is not downloading as=
 the device handle is not passed to Supported() function during ExitBootSer=
vice (ConnectController()) of edk2.=0A=
=0A=
NOTE: Device is detected during pci bus enumeration. Also verified device d=
etection in uefi shell using "pci" command.=0A=
=0A=
We did a workaround implementation which will do pci bus scan to detect the=
 USB controller connected in Pcie switch and download the firmware. Device =
detected and firmware downloaded successfully.=0A=
But still the USB devices (mass storage/keyboard) are not detecting in Setu=
p page and Uefi Shell.=0A=
=0A=
We feel the XhciDxe driver did not drive this device as only the parent dev=
ices handle passed to this driver.=0A=
=0A=
NOTE: USB ports are active, devices detected and working well in OS side.=
=0A=
We feel the Xhci driver in OS, drives the USB controller device when the co=
ntroller has firmware.=0A=
=0A=
=0A=
How to pass the device handle for the USB controller connected in Pcie swit=
ch during ExitBootService ?=0A=
=0A=
We understand if RenesasFirmwarePD720202 driver and XhciDxe get the device =
handle for the USB controller that is connected in Pcie switch, the above m=
entioned issues will get resolved. Please advise if our understanding is wr=
ong here.=0A=
=0A=
Please provide your inputs.=0A=
=0A=
Thanks,=0A=
Antony

--_000_PH0PR05MB87506061EF49EC4093D7BCAEF82E9PH0PR05MB8750namp_--