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From: Alan Tull <atull@kernel.org>
To: Wu Hao <hao.wu@intel.com>
Cc: Moritz Fischer <mdf@kernel.org>,
	linux-fpga@vger.kernel.org,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-api@vger.kernel.org, "Kang, Luwei" <luwei.kang@intel.com>,
	"Zhang, Yi Z" <yi.z.zhang@intel.com>
Subject: Re: [PATCH v5 10/28] fpga: dfl: add dfl_fpga_port_ops support.
Date: Tue, 5 Jun 2018 16:24:26 -0500	[thread overview]
Message-ID: <CANk1AXTezwLOZOy3E=herSatYRm9mATdqO8WFcbEbRGpfK5mRQ@mail.gmail.com> (raw)
In-Reply-To: <1525229431-3087-11-git-send-email-hao.wu@intel.com>

On Tue, May 1, 2018 at 9:50 PM, Wu Hao <hao.wu@intel.com> wrote:

Hi Hao,

> In some cases, other DFL driver modules may need to access some port
> operations, e.g disable / enable port for partial reconfiguration in
> FME module. In order to avoid dependency between port and FME modules,
> this patch introduces the dfl_fpga_port_ops support in DFL framework.
> A global dfl_fpga_port_ops list is added in the DFL framework, and
> it allows other DFL modules to use these port operations registered
> to this list, even in virtualization case, the port platform device
> is turned into VF / guest VM and hidden in host, the registered
> port_ops is still usable. It resolves the dependency issues between
> modules, but once get port ops API returns a valid port ops, that
> means related port driver module has been module_get to prevent from
> unexpected unload, and put port ops API must be invoked after use.
>
> These APIs introduced by this patch is listed below:
>  * dfl_fpga_add_port_ops
>    add one port ops to the global list.
>
>  * dfl_fpga_del_port_ops
>    del one port ops from the global list.
>
>  * dfl_fpga_get_port_ops / dfl_fpga_put_port_ops
>    get/put the port ops before/after use.
>
> Signed-off-by: Wu Hao <hao.wu@intel.com>
Acked-by: Alan Tull <atull@kernel.org>
> ---
>  drivers/fpga/dfl.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  drivers/fpga/dfl.h | 21 +++++++++++++++++
>  2 files changed, 88 insertions(+)
>

  reply	other threads:[~2018-06-05 21:25 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-02  2:50 [PATCH v5 00/28] FPGA Device Feature List (DFL) Device Drivers Wu Hao
2018-05-02  2:50 ` [PATCH v5 01/28] docs: fpga: add a document for FPGA Device Feature List (DFL) Framework Overview Wu Hao
2018-06-06 16:16   ` Alan Tull
2018-06-07  2:00     ` Wu Hao
2018-05-02  2:50 ` [PATCH v5 02/28] fpga: mgr: add region_id to fpga_image_info Wu Hao
2018-05-02  2:50 ` [PATCH v5 03/28] fpga: mgr: add status for fpga-manager Wu Hao
2018-05-02  2:50 ` [PATCH v5 04/28] fpga: mgr: add compat_id support Wu Hao
2018-05-07 21:09   ` Alan Tull
2018-05-21  3:03     ` Wu Hao
2018-05-21 17:33       ` Alan Tull
2018-05-22  9:39         ` Wu Hao
2018-05-02  2:50 ` [PATCH v5 05/28] fpga: region: " Wu Hao
2018-05-07 21:09   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 06/28] fpga: add device feature list support Wu Hao
2018-06-05 20:21   ` Alan Tull
2018-06-06 12:22     ` Wu Hao
2018-05-02  2:50 ` [PATCH v5 07/28] fpga: dfl: add chardev support for feature devices Wu Hao
2018-06-05 20:21   ` Alan Tull
2018-06-06 12:24     ` Wu Hao
2018-06-07 18:03       ` Alan Tull
2018-06-08  0:11         ` Wu Hao
2018-05-02  2:50 ` [PATCH v5 08/28] fpga: dfl: add dfl_fpga_cdev_find_port Wu Hao
2018-05-02  2:50 ` [PATCH v5 09/28] fpga: dfl: add feature device infrastructure Wu Hao
2018-06-05 21:14   ` Alan Tull
2018-06-06 12:33     ` Wu Hao
2018-05-02  2:50 ` [PATCH v5 10/28] fpga: dfl: add dfl_fpga_port_ops support Wu Hao
2018-06-05 21:24   ` Alan Tull [this message]
2018-05-02  2:50 ` [PATCH v5 11/28] fpga: dfl: add dfl_fpga_check_port_id function Wu Hao
2018-06-05 21:25   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 12/28] fpga: add FPGA DFL PCIe device driver Wu Hao
2018-05-02  2:50 ` [PATCH v5 13/28] fpga: dfl-pci: add enumeration for feature devices Wu Hao
2018-05-02  2:50 ` [PATCH v5 14/28] fpga: dfl: add FPGA Management Engine driver basic framework Wu Hao
2018-06-06 16:08   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 15/28] fpga: dfl: fme: add header sub feature support Wu Hao
2018-05-02  2:50 ` [PATCH v5 16/28] fpga: dfl: fme: add DFL_FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao
2018-05-02  2:50 ` [PATCH v5 17/28] fpga: dfl: fme: add partial reconfiguration sub feature support Wu Hao
2018-06-06 16:08   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 18/28] fpga: dfl: add fpga manager platform driver for FME Wu Hao
2018-06-06 15:52   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 19/28] fpga: dfl: fme-mgr: add compat_id support Wu Hao
2018-05-07 21:12   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 20/28] fpga: dfl: add fpga bridge platform driver for FME Wu Hao
2018-05-23 15:15   ` Alan Tull
2018-05-23 15:28     ` Wu Hao
2018-05-23 21:06       ` Alan Tull
2018-05-23 23:42         ` Wu Hao
2018-05-24 17:26           ` Alan Tull
2018-05-24 23:59             ` Wu Hao
2018-05-02  2:50 ` [PATCH v5 21/28] fpga: dfl: add fpga region " Wu Hao
2018-05-02  2:50 ` [PATCH v5 22/28] fpga: dfl: fme-region: add support for compat_id Wu Hao
2018-05-07 21:12   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 23/28] fpga: dfl: add FPGA Accelerated Function Unit driver basic framework Wu Hao
2018-05-02  2:50 ` [PATCH v5 24/28] fpga: dfl: afu: add port ops support Wu Hao
2018-06-06 15:57   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 25/28] fpga: dfl: afu: add header sub feature support Wu Hao
2018-05-02  2:50 ` [PATCH v5 26/28] fpga: dfl: afu: add DFL_FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao
2018-05-02  2:50 ` [PATCH v5 27/28] fpga: dfl: afu: add afu sub feature support Wu Hao
2018-06-06 16:04   ` Alan Tull
2018-05-02  2:50 ` [PATCH v5 28/28] fpga: dfl: afu: add DFL_FPGA_PORT_DMA_MAP/UNMAP ioctls support Wu Hao
2018-06-06 16:09   ` Alan Tull
2018-05-03 21:14 ` [PATCH v5 00/28] FPGA Device Feature List (DFL) Device Drivers Alan Tull
2018-05-04  0:15   ` Wu Hao

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