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From: zhangfei <zhangfei.gao@linaro.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
	jonathan.cameron@huawei.com, kenneth-lee-2012@foxmail.com,
	Wangzhou <wangzhou1@hisilicon.com>,
	linux-accelerators@lists.ozlabs.org,
	linux-kernel@vger.kernel.org,
	Kenneth Lee <liguozhu@hisilicon.com>,
	Zaibo Xu <xuzaibo@huawei.com>
Subject: Re: [PATCH v3 2/2] uacce: add uacce driver
Date: Thu, 12 Sep 2019 22:09:36 +0800	[thread overview]
Message-ID: <c4c53513-a5f1-ce02-c108-2d0e05dd0236@linaro.org> (raw)
In-Reply-To: <20190904123803.GC5043@kroah.com>



On 2019/9/4 下午8:38, Greg Kroah-Hartman wrote:
> On Tue, Sep 03, 2019 at 12:14:47PM +0800, Zhangfei Gao wrote:
>> From: Kenneth Lee <liguozhu@hisilicon.com>
>>
>> Uacce (Unified/User-space-access-intended Accelerator Framework) targets to
>> provide Shared Virtual Addressing (SVA) between accelerators and processes.
>> So accelerator can access any data structure of the main cpu.
>> This differs from the data sharing between cpu and io device, which share
>> data content rather than address.
>> Since unified address, hardware and user space of process can share the
>> same virtual address in the communication.
>>
>> Uacce create a chrdev for every registration, the queue is allocated to
>> the process when the chrdev is opened. Then the process can access the
>> hardware resource by interact with the queue file. By mmap the queue
>> file space to user space, the process can directly put requests to the
>> hardware without syscall to the kernel space.
>>
>> Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com>
>> Signed-off-by: Zaibo Xu <xuzaibo@huawei.com>
>> Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
>> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
>> ---
>>   Documentation/ABI/testing/sysfs-driver-uacce |   47 ++
>>   drivers/misc/Kconfig                         |    1 +
>>   drivers/misc/Makefile                        |    1 +
>>   drivers/misc/uacce/Kconfig                   |   13 +
>>   drivers/misc/uacce/Makefile                  |    2 +
>>   drivers/misc/uacce/uacce.c                   | 1096 ++++++++++++++++++++++++++
>>   include/linux/uacce.h                        |  172 ++++
>>   include/uapi/misc/uacce.h                    |   39 +
>>   8 files changed, 1371 insertions(+)
>>   create mode 100644 Documentation/ABI/testing/sysfs-driver-uacce
>>   create mode 100644 drivers/misc/uacce/Kconfig
>>   create mode 100644 drivers/misc/uacce/Makefile
>>   create mode 100644 drivers/misc/uacce/uacce.c
>>   create mode 100644 include/linux/uacce.h
>>   create mode 100644 include/uapi/misc/uacce.h
>>
>> diff --git a/Documentation/ABI/testing/sysfs-driver-uacce b/Documentation/ABI/testing/sysfs-driver-uacce
>> new file mode 100644
>> index 0000000..ee0a66e
>> --- /dev/null
>> +++ b/Documentation/ABI/testing/sysfs-driver-uacce
>> @@ -0,0 +1,47 @@
>> +What:           /sys/class/uacce/hisi_zip-<n>/id
>> +Date:           Sep 2019
>> +KernelVersion:  5.3
> 5.3 will be released in a week or so, without this file in it, so that's
> not ok here :(
>
Thanks, will use 5.4 instead.
Since 5.4-rc1 still need some time, can I send updated version based on 
5.3-rc8 for more review.
And I found smmu in 5.3-rc1 have issue, and rc8 is OK.

Thanks

  reply	other threads:[~2019-09-12 14:09 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-03  3:52 [PATCH v3 0/2] Add uacce module for Accelerator Zhangfei Gao
2019-09-03  4:14 ` [PATCH v3 1/2] uacce: Add documents for uacce Zhangfei Gao
2019-09-03  4:14   ` [PATCH v3 2/2] uacce: add uacce driver Zhangfei Gao
2019-09-04 12:38     ` Greg Kroah-Hartman
2019-09-12 14:09       ` zhangfei [this message]
2019-09-04 12:50     ` Greg Kroah-Hartman
2019-09-12 14:06       ` zhangfei

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