lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Fri, 4 Dec 2020 05:05:29 +0000
From:   Pawel Laszczak <pawell@...ence.com>
To:     Peter Chen <peter.chen@....com>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "balbi@...nel.org" <balbi@...nel.org>,
        "colin.king@...onical.com" <colin.king@...onical.com>,
        "rogerq@...com" <rogerq@...com>, Rahul Kumar <kurahul@...ence.com>,
        "nsekhar@...com" <nsekhar@...com>
Subject: RE: [PATCH v4 00/10] Introduced new Cadence USBSSP DRD Driver.

>
>On 20-12-02 14:25:38, Pawel Laszczak wrote:
>> This patch introduce new Cadence USBSS DRD driver to linux kernel.
>>
>> The Cadence USBSS DRD Controller is a highly configurable IP Core which
>> can be instantiated as Dual-Role Device (DRD), Peripheral Only and
>> Host Only (XHCI)configurations.
>>
>> The current driver has been validated with FPGA burned. We have support
>> for PCIe bus, which is used on FPGA prototyping.
>>
>> The host side of USBSS-DRD controller is compliance with XHCI
>> specification, so it works with standard XHCI Linux driver.
>>
>> The device side of USBSS DRD controller is compliant with XHCI.
>> The architecture for device side is almost the same as for host side,
>> and most of the XHCI specification can be used to understand how
>> this controller operates.
>>
>> This controller and driver support Full Speed, Hight Speed, Supper Speed
>> and Supper Speed Plus USB protocol.
>>
>> The prefix cdnsp used in driver has chosen by analogy to cdn3 driver.
>> The last letter of this acronym means PLUS. The formal name of controller
>> is USBSSP but it's to generic so I've decided to use CDNSP.
>>
>> The patch 1: adds support for DRD CDNSP.
>> The patch 2: separates common code that can be reusable by cdnsp driver.
>> The patch 3: moves reusable code to separate module.
>> The patch 4: changes prefixes in reusable code from cdns3 to common cdns.
>> The patch 5: adopts gadget_dev pointer in cdns structure to make possible
>>              use it in both drivers.
>> The patches 6-8: add the main part of driver and has been intentionally
>>              split into 3 part. In my opinion such division should not
>>              affect understanding and reviewing the driver, and cause that
>>              main patch (7/8) is little smaller. Patch 6 introduces main
>>              header file for driver, 7 is the main part that implements all
>>              functionality of driver and 8 introduces tracepoints.
>> The patch 9: Adds cdns3 prefixes to files related with USBSS driver.
>> the patch 10: Adds USBSSP DRD IP driver entry to MAINTAINERS file.
>
>Hi Pawel,
>
>You may need to fix below:
>
>
>diff --git a/drivers/usb/cdns3/cdns3-plat.c b/drivers/usb/cdns3/cdns3-plat.c
>index 04bccf6daaba..30d69b639492 100644
>--- a/drivers/usb/cdns3/cdns3-plat.c
>+++ b/drivers/usb/cdns3/cdns3-plat.c
>@@ -4,7 +4,7 @@
>  *
>  * Copyright (C) 2018-2020 Cadence.
>  * Copyright (C) 2017-2018 NXP
>- * Copyright (C) 2019 Texas Instrumentsq
>+ * Copyright (C) 2019 Texas Instruments
>  *
>  *
>  * Author: Peter Chen <peter.chen@....com>
>
> static int cdns3_plat_runtime_resume(struct device *dev)
> {
>-	return cdns3_controller_resume(dev, PMSG_SUSPEND);
>+	return cdns3_controller_resume(dev, PMSG_AUTO_RESUME);
> }
>@@ -273,7 +273,14 @@ static int cdns3_plat_suspend(struct device *dev)
>
> 	cdns_suspend(cdns);
>
>-	return cdns3_controller_suspend(dev, PMSG_AUTO_SUSPEND);
>+	return cdns3_controller_suspend(dev, PMSG_SUSPEND);
>
>I am porting and testing your patches at NXP platforms.
>

Thanks for that,
I tried to compare the original code with this one very carefully but
I omit this. Also during testing no problem arose.

I will wait some day and on Tuesday or on Wednesday I will post
v5 with your fix. 

>
>>
>> Changlog from v3:
>> - added 'T' to MAINTAINERS file for CDNSP entry
>> - updated common code with latest cdns3 fixes
>>
>> Changlog from v2:
>> - removed not used pdev parameter from cdnsp_read/wite_64 functions
>> - fixed incorrect value assigned to CDNSP_ENDPOINTS_NUM (32 -> 31)
>> - replaced some constant value with CDNSP_ENDPOINTS_NUM macro
>> - replaced 'true' with '1' in bits description in cdnsp-gadget.h file
>> - fixed some typos
>> - some other less important changes suggested by Peter Chen
>>
>> Changlog from v1:
>> - updated common code to latest cdns3 driver
>> - moved cdnsp driver files to cdns3 as sugested by Peter Chan
>> - removed duplicate code from cdnsp_ep0_set_config function
>> - added cdns3 prefixes to file related with USBSS driver
>> - updated MAINTAINERS file
>> - fixed issue with U1
>> - fixed issue with L1
>> - some less improtant changes sugested by Chunfeng Yun
>> ---
>>
>> Pawel Laszczak (10):
>>   usb: cdns3: Add support for DRD CDNSP
>>   usb: cdns3: Split core.c into cdns3-plat and core.c file
>>   usb: cdns3: Moves reusable code to separate module
>>   usb: cdns3: Refactoring names in reusable code
>>   usb: cdns3: Changed type of gadget_dev in cdns structure
>>   usb: cdnsp: Device side header file for CDNSP driver
>>   usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver
>>   usb: cdnsp: Add tracepoints for CDNSP driver
>>   usb: cdns3: Change file names for cdns3 driver.
>>   MAINTAINERS: add Cadence USBSSP DRD IP driver entry
>>
>>  MAINTAINERS                                   |    9 +
>>  drivers/usb/Makefile                          |    2 +
>>  drivers/usb/cdns3/Kconfig                     |   61 +-
>>  drivers/usb/cdns3/Makefile                    |   30 +-
>>  drivers/usb/cdns3/{debug.h => cdns3-debug.h}  |    0
>>  drivers/usb/cdns3/{ep0.c => cdns3-ep0.c}      |    4 +-
>>  .../usb/cdns3/{gadget.c => cdns3-gadget.c}    |   28 +-
>>  .../usb/cdns3/{gadget.h => cdns3-gadget.h}    |    0
>>  drivers/usb/cdns3/cdns3-imx.c                 |    2 +-
>>  drivers/usb/cdns3/cdns3-plat.c                |  315 +++
>>  drivers/usb/cdns3/{trace.c => cdns3-trace.c}  |    2 +-
>>  drivers/usb/cdns3/{trace.h => cdns3-trace.h}  |    6 +-
>>  drivers/usb/cdns3/cdnsp-debug.h               |  583 ++++
>>  drivers/usb/cdns3/cdnsp-ep0.c                 |  495 ++++
>>  drivers/usb/cdns3/cdnsp-gadget.c              | 2017 ++++++++++++++
>>  drivers/usb/cdns3/cdnsp-gadget.h              | 1600 +++++++++++
>>  drivers/usb/cdns3/cdnsp-mem.c                 | 1325 +++++++++
>>  drivers/usb/cdns3/cdnsp-pci.c                 |  255 ++
>>  drivers/usb/cdns3/cdnsp-ring.c                | 2439 +++++++++++++++++
>>  drivers/usb/cdns3/cdnsp-trace.c               |   12 +
>>  drivers/usb/cdns3/cdnsp-trace.h               |  840 ++++++
>>  drivers/usb/cdns3/core.c                      |  455 +--
>>  drivers/usb/cdns3/core.h                      |   54 +-
>>  drivers/usb/cdns3/drd.c                       |  222 +-
>>  drivers/usb/cdns3/drd.h                       |   94 +-
>>  drivers/usb/cdns3/gadget-export.h             |   22 +-
>>  drivers/usb/cdns3/host-export.h               |   13 +-
>>  drivers/usb/cdns3/host.c                      |   22 +-
>>  28 files changed, 10400 insertions(+), 507 deletions(-)
>>  rename drivers/usb/cdns3/{debug.h => cdns3-debug.h} (100%)
>>  rename drivers/usb/cdns3/{ep0.c => cdns3-ep0.c} (99%)
>>  rename drivers/usb/cdns3/{gadget.c => cdns3-gadget.c} (99%)
>>  rename drivers/usb/cdns3/{gadget.h => cdns3-gadget.h} (100%)
>>  create mode 100644 drivers/usb/cdns3/cdns3-plat.c
>>  rename drivers/usb/cdns3/{trace.c => cdns3-trace.c} (89%)
>>  rename drivers/usb/cdns3/{trace.h => cdns3-trace.h} (99%)
>>  create mode 100644 drivers/usb/cdns3/cdnsp-debug.h
>>  create mode 100644 drivers/usb/cdns3/cdnsp-ep0.c
>>  create mode 100644 drivers/usb/cdns3/cdnsp-gadget.c
>>  create mode 100644 drivers/usb/cdns3/cdnsp-gadget.h
>>  create mode 100644 drivers/usb/cdns3/cdnsp-mem.c
>>  create mode 100644 drivers/usb/cdns3/cdnsp-pci.c
>>  create mode 100644 drivers/usb/cdns3/cdnsp-ring.c
>>  create mode 100644 drivers/usb/cdns3/cdnsp-trace.c
>>  create mode 100644 drivers/usb/cdns3/cdnsp-trace.h
>>
>> --
>> 2.17.1
>>
>
--

Thanks,
Pawel

Powered by blists - more mailing lists