linux-kernel - Re: [PATCH v7 0/7] Add interrupt support to FPGA DFL drivers

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Message-ID: <20200623052613.GB23037@yilunxu-OptiPlex-7050>
Date:   Tue, 23 Jun 2020 13:26:13 +0800
From:   Xu Yilun <yilun.xu@...el.com>
To:     Tom Rix <trix@...hat.com>
Cc:     mdf@...nel.org, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org, bhu@...hat.com, mtosatti@...hat.com,
        gregkh@...uxfoundation.org, jun.j.tian@...el.com, hao.wu@...el.com
Subject: Re: [PATCH v7 0/7] Add interrupt support to FPGA DFL drivers

On Mon, Jun 22, 2020 at 05:27:20AM -0700, Tom Rix wrote:
> In addition to reviewing, I have run these changes on the pac a10 card and while i do not have an afu using interrupts, I have exercised some of the new interfaces.
> 
> The most useful i have submitted to selftests drivers/fpga.  In the future, this would be a good place to put other fpga unit tests. 
> 
> The selftest patch depends on this change.
> 
> So you can also add
> 
> Tested-by: Tom Rix <trix@...hat.com>

Yes I'll add your Tested-by tag.

Thanks,
Yilun

> 
> Tom
> 
> On 6/21/20 11:48 PM, Xu Yilun wrote:
> > Hi Moritz:
> >
> > Could you please help review the patchset when you have time?
> >
> > You have already reviewed the first 3 patches some time ago. The
> > comments are all fixed. Hao and Redhat guys also have done several
> > rounds of review. The patches are all Acked-by Hao, reviewed by
> > Marcelo & Tom.
> >
> > There is little change to the code for several months, seems it stays
> > ready and just need your final Ack.
> >
> > Actually this is the last feature for our first generation PAC A10 Card,
> > and is important for users to have the full support.
> >
> > We really need your help on code review ...
> >
> > Many thanks!
> > Yilun
> >
> > On Tue, Jun 16, 2020 at 12:08:41PM +0800, Xu Yilun wrote:
> >> This patchset add interrupt support to FPGA DFL drivers.
> >>
> >> With these patches, DFL driver will parse and assign interrupt resources
> >> for enumerated feature devices and their sub features.
> >>
> >> This patchset also introduces a set of APIs for user to monitor DFL
> >> interrupts. Three sub features (DFL FME error, DFL AFU error and user
> >> interrupt) drivers now support these APIs.
> >>
> >> Patch #1: DFL framework change. Accept interrupt info input from DFL bus
> >>           driver, and add interrupt parsing and assignment for feature
> >>           sub devices.
> >> Patch #2: DFL pci driver change, add interrupt info on DFL enumeration.
> >> Patch #3: DFL framework change. Add helper functions for feature sub
> >>           device drivers to handle interrupt and notify users.
> >> Patch #4: Add interrupt support for AFU error reporting sub feature.
> >> Patch #5: Add interrupt support for FME global error reporting sub
> >>           feature.
> >> Patch #6: Add interrupt support for a new sub feature, to handle user
> >>           interrupts implemented in AFU.
> >> Patch #7: Documentation for DFL interrupt handling.
> >>
> >> Main changes from v1:
> >>  - Early validating irq table for each feature in parse_feature_irq()
> >>    in Patch #1.
> >>  - Changes IOCTL interfaces. use DFL_FPGA_FME/PORT_XXX_GET_IRQ_NUM
> >>    instead of DFL_FPGA_FME/PORT_XXX_GET_INFO, delete flag field for
> >>    DFL_FPGA_FME/PORT_XXX_SET_IRQ param
> >>
> >> Main changes from v2:
> >>  - put parse_feature_irqs() inside create_feature_instance().
> >>  - refines code for dfl_fpga_set_irq_triggers, delete local variable j.
> >>  - put_user() instead of copy_to_user() for DFL_FPGA_XXX_GET_IRQ_NUM IOCTL
> >>
> >> Main changes from v3:
> >>  - rebased to 5.7-rc1.
> >>  - fail the dfl enumeration when irq parsing error happens.
> >>  - Add 2 helper functions in dfl.c to handle generic irq ioctls in feature
> >>    drivers.
> >>
> >> Main changes from v4:
> >>  - Minor fixes for Hao's comments.
> >>
> >> Main changes from v5:
> >>  - Remove unnecessary type casting in Patch #1 & #3.
> >>  - Minor fixes for Moritz's comments.
> >>
> >> Main changes from v6:
> >>  - Add the header file <linux/interrupt.h> for Patch #1, to fix build
> >>    error on ARCH=xtensa
> >>  - Minor fixes in Patch #2 & #3.
> >>
> >> Xu Yilun (7):
> >>   fpga: dfl: parse interrupt info for feature devices on enumeration
> >>   fpga: dfl: pci: add irq info for feature devices enumeration
> >>   fpga: dfl: introduce interrupt trigger setting API
> >>   fpga: dfl: afu: add interrupt support for port error reporting
> >>   fpga: dfl: fme: add interrupt support for global error reporting
> >>   fpga: dfl: afu: add AFU interrupt support
> >>   Documentation: fpga: dfl: add descriptions for interrupt related
> >>     interfaces.
> >>
> >>  Documentation/fpga/dfl.rst    |  19 +++
> >>  drivers/fpga/dfl-afu-error.c  |  17 +++
> >>  drivers/fpga/dfl-afu-main.c   |  32 +++++
> >>  drivers/fpga/dfl-fme-error.c  |  18 +++
> >>  drivers/fpga/dfl-fme-main.c   |   6 +
> >>  drivers/fpga/dfl-pci.c        |  76 +++++++++--
> >>  drivers/fpga/dfl.c            | 310 ++++++++++++++++++++++++++++++++++++++++++
> >>  drivers/fpga/dfl.h            |  57 ++++++++
> >>  include/uapi/linux/fpga-dfl.h |  82 +++++++++++
> >>  9 files changed, 608 insertions(+), 9 deletions(-)
> >>
> >> -- 
> >> 2.7.4