From: Alan Tull <atull@kernel.org>
To: Moritz Fischer <mdf@kernel.org>
Cc: Wu Hao <hao.wu@intel.com>,
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>,
Xiao Guangrong <guangrong.xiao@linux.intel.com>,
Tim Whisonant <tim.whisonant@intel.com>,
Enno Luebbers <enno.luebbers@intel.com>,
Shiva Rao <shiva.rao@intel.com>,
Christopher Rauer <christopher.rauer@intel.com>
Subject: Re: [PATCH v4 07/24] fpga: dfl: add feature device infrastructure
Date: Wed, 14 Feb 2018 15:13:54 -0600 [thread overview]
Message-ID: <CANk1AXRksJum6s5yB5727136DBLHs4UPW7xaLn_dT5qMEfqm9A@mail.gmail.com> (raw)
In-Reply-To: <20180214210319.GC25618@tyrael.ni.corp.natinst.com>
On Wed, Feb 14, 2018 at 3:03 PM, Moritz Fischer <mdf@kernel.org> wrote:
Hi Moritz,
> HI Hao,
>
> On Tue, Feb 13, 2018 at 05:24:36PM +0800, Wu Hao wrote:
>> From: Xiao Guangrong <guangrong.xiao@linux.intel.com>
>>
>> This patch abstracts the common operations of the sub features, and defines
>> the feature_ops data structure, including init, uinit and ioctl function
>> pointers. And this patch adds some common helper functions for FME and AFU
>> drivers, e.g feature_dev_use_begin/end which are used to ensure exclusive
>> usage of the feature device file.
>>
>> Signed-off-by: Tim Whisonant <tim.whisonant@intel.com>
>> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com>
>> Signed-off-by: Shiva Rao <shiva.rao@intel.com>
>> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com>
>> Signed-off-by: Kang Luwei <luwei.kang@intel.com>
>> Signed-off-by: Zhang Yi <yi.z.zhang@intel.com>
>> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
>> Signed-off-by: Wu Hao <hao.wu@intel.com>
>> ---
>> v2: rebased
>> v3: use const for feature_ops.
>> replace pci related function.
>> v4: rebase and add more comments in code.
>> ---
>> drivers/fpga/dfl.c | 59 +++++++++++++++++++++++++++++++++++++
>> drivers/fpga/dfl.h | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
>> 2 files changed, 143 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
>> index 38dc819..c0aad87 100644
>> --- a/drivers/fpga/dfl.c
>> +++ b/drivers/fpga/dfl.c
>> @@ -74,6 +74,65 @@ static enum fpga_id_type feature_dev_id_type(struct platform_device *pdev)
>> return FPGA_ID_MAX;
>> }
>>
>> +void fpga_dev_feature_uinit(struct platform_device *pdev)
>> +{
>> + struct feature *feature;
>> + struct feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
> See comment below w.r.t ordering declarations. Not a must for sure.
>> +
>> + fpga_dev_for_each_feature(pdata, feature)
>> + if (feature->ops) {
>> + feature->ops->uinit(pdev, feature);
>> + feature->ops = NULL;
>> + }
>> +}
>> +EXPORT_SYMBOL_GPL(fpga_dev_feature_uinit);
>> +
>> +static int
>> +feature_instance_init(struct platform_device *pdev,
>> + struct feature_platform_data *pdata,
>> + struct feature *feature, struct feature_driver *drv)
>> +{
>> + int ret;
>> +
>> + WARN_ON(!feature->ioaddr);
>
> Not sure I understand correctly, is the !feature->ioaddr a use-case that
> happens? If not just return early.
>> +
>> + ret = drv->ops->init(pdev, feature);
>> + if (ret)
>> + return ret;
>> +
>> + feature->ops = drv->ops;
>> +
>> + return ret;
>> +}
>> +
>> +int fpga_dev_feature_init(struct platform_device *pdev,
>> + struct feature_driver *feature_drvs)
>> +{
>> + struct feature *feature;
>> + struct feature_driver *drv = feature_drvs;
>> + struct feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
>> + int ret;
> We don't have clear guidelines here, but some subsystems want reverse
> X-Mas tree declarations.
Sounds good! I agree.
Alan
next prev parent reply other threads:[~2018-02-14 21:14 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-13 9:24 [PATCH v4 00/24] FPGA Device Feature List (DFL) Device Drivers Wu Hao
2018-02-13 9:24 ` [PATCH v4 01/24] docs: fpga: add a document for FPGA Device Feature List (DFL) Framework Overview Wu Hao
2018-02-26 22:48 ` Alan Tull
2018-02-27 2:12 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 02/24] fpga: mgr: add region_id to fpga_image_info Wu Hao
2018-02-13 9:24 ` [PATCH v4 03/24] fpga: mgr: add status for fpga-manager Wu Hao
2018-02-14 15:55 ` Alan Tull
2018-02-15 9:42 ` Wu, Hao
2018-02-14 20:55 ` Moritz Fischer
2018-02-13 9:24 ` [PATCH v4 04/24] fpga: add device feature list support Wu Hao
2018-03-21 23:54 ` Alan Tull
2018-03-22 4:40 ` Wu Hao
2018-03-22 21:31 ` Alan Tull
2018-03-23 4:33 ` Wu Hao
2018-03-26 17:21 ` Alan Tull
2018-03-27 2:35 ` Wu Hao
2018-03-29 21:57 ` Alan Tull
2018-04-02 4:22 ` Wu Hao
2018-04-02 19:06 ` Alan Tull
2018-04-03 1:36 ` Wu Hao
2018-04-04 20:06 ` Alan Tull
2018-04-06 11:01 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 05/24] fpga: dfl: add chardev support for feature devices Wu Hao
2018-02-13 9:24 ` [PATCH v4 06/24] fpga: dfl: adds fpga_cdev_find_port Wu Hao
2018-02-14 16:24 ` Alan Tull
2018-02-15 9:46 ` Wu, Hao
2018-02-14 20:55 ` Moritz Fischer
2018-02-13 9:24 ` [PATCH v4 07/24] fpga: dfl: add feature device infrastructure Wu Hao
2018-02-14 21:03 ` Moritz Fischer
2018-02-14 21:13 ` Alan Tull [this message]
2018-02-15 10:05 ` Wu, Hao
2018-02-15 19:49 ` Moritz Fischer
2018-02-18 2:15 ` Wu, Hao
2018-02-13 9:24 ` [PATCH v4 08/24] fpga: add FPGA DFL PCIe device driver Wu Hao
2018-03-13 16:05 ` Alan Tull
2018-03-15 18:49 ` Moritz Fischer
2018-03-16 4:29 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 09/24] fpga: dfl-pci: add enumeration for feature devices Wu Hao
2018-03-13 18:30 ` Alan Tull
2018-03-14 5:21 ` Wu Hao
2018-03-14 14:48 ` Alan Tull
2018-02-13 9:24 ` [PATCH v4 10/24] fpga: dfl: add FPGA Management Engine driver basic framework Wu Hao
2018-04-05 18:35 ` Alan Tull
2018-04-06 11:04 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 11/24] fpga: dfl: fme: add header sub feature support Wu Hao
2018-02-14 16:36 ` Alan Tull
2018-02-13 9:24 ` [PATCH v4 12/24] fpga: dfl: fme: add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao
2018-03-19 18:29 ` Alan Tull
2018-03-20 6:46 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 13/24] fpga: region: add compat_id support Wu Hao
2018-02-28 22:55 ` Alan Tull
2018-03-01 6:17 ` Wu Hao
2018-03-05 19:42 ` Alan Tull
2018-03-06 0:56 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 14/24] fpga: dfl: fme: add partial reconfiguration sub feature support Wu Hao
2018-03-05 22:46 ` Alan Tull
2018-03-06 2:08 ` Wu Hao
2018-03-06 18:29 ` Alan Tull
2018-03-07 4:39 ` Wu Hao
2018-03-11 20:09 ` matthew.gerlach
2018-03-12 4:29 ` Wu Hao
2018-03-12 18:53 ` Alan Tull
2018-03-12 21:36 ` matthew.gerlach
2018-03-13 1:07 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 15/24] fpga: dfl-fme-pr: add compat_id support for dfl-fme-region platform device Wu Hao
2018-02-28 23:06 ` Alan Tull
2018-03-01 5:49 ` Wu Hao
2018-03-01 15:59 ` Alan Tull
2018-03-01 15:55 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 16/24] fpga: dfl: add fpga manager platform driver for FME Wu Hao
2018-03-20 20:32 ` Alan Tull
2018-03-21 2:50 ` Wu Hao
2018-03-21 16:55 ` Moritz Fischer
2018-03-22 6:07 ` Wu Hao
2018-04-05 18:45 ` Alan Tull
2018-04-06 11:11 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 17/24] fpga: dfl: add fpga bridge " Wu Hao
2018-02-13 9:24 ` [PATCH v4 18/24] fpga: dfl: add fpga region " Wu Hao
2018-02-13 9:24 ` [PATCH v4 19/24] fpga: dfl-fme-region: add compat_id support Wu Hao
2018-02-13 9:24 ` [PATCH v4 20/24] fpga: dfl: add FPGA Accelerated Function Unit driver basic framework Wu Hao
2018-03-19 18:40 ` Alan Tull
2018-04-05 18:26 ` Alan Tull
2018-04-06 11:05 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 21/24] fpga: dfl: afu: add header sub feature support Wu Hao
2018-02-13 9:24 ` [PATCH v4 22/24] fpga: dfl: afu: add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao
2018-02-13 9:24 ` [PATCH v4 23/24] fpga: dfl: afu: add user afu sub feature support Wu Hao
2018-03-19 20:10 ` Alan Tull
2018-03-20 7:10 ` Wu Hao
2018-03-20 18:17 ` Alan Tull
2018-03-21 3:00 ` Wu Hao
2018-03-21 23:50 ` Alan Tull
2018-03-22 4:41 ` Wu Hao
2018-02-13 9:24 ` [PATCH v4 24/24] fpga: dfl: afu: add FPGA_PORT_DMA_MAP/UNMAP ioctls support Wu Hao
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