linux-kernel - Re:[PATCH v3,0/4] drivers: uio: new driver uio_fsl_85xx_cache

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Date:   Thu, 16 Apr 2020 17:29:29 +0800 (GMT+08:00)
From:   王文虎 <wenhu.wang@...o.com>
To:     Wang Wenhu <wenhu.wang@...o.com>
Cc:     gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        oss@...error.net, christophe.leroy@....fr,
        linuxppc-dev@...ts.ozlabs.org, kernel@...o.com
Subject: Re:[PATCH v3,0/4] drivers: uio: new driver uio_fsl_85xx_cache_sram

Hi,
Seems there is something wrong with the server that multiple dumplications
of the v3 patches were sent out, please ignore the rest and take this newest
series as formal count.

Thanks,
Wenhu

From: Wang Wenhu <wenhu.wang@...o.com>
Date: 2020-04-16 15:49:14
To:  gregkh@...uxfoundation.org,linux-kernel@...r.kernel.org,oss@...error.net,christophe.leroy@....fr,linuxppc-dev@...ts.ozlabs.org
Cc:  kernel@...o.com,Wang Wenhu <wenhu.wang@...o.com>
Subject: [PATCH v3,0/4] drivers: uio: new driver uio_fsl_85xx_cache_sram>This series add a new uio driver for freescale 85xx platforms to
>access the Cache-Sram form user level. This is extremely helpful
>for the user-space applications that require high performance memory
>accesses.
>
>It fixes the compile errors and warning of the hardware level drivers
>and implements the uio driver in uio_fsl_85xx_cache_sram.c.
>
>Changes since v1:
> * Addressed comments from Greg K-H
> * Moved kfree(info->name) into uio_info_free_internal()
>
>Changes since v2:
> * Drop the patch that modifies Kconfigs of arch/powerpc/platforms
>   and modified the sequence of patches:
>    01:dropped, 02->03, 03->02, 04->01, 05->04
> * Addressed comments from Greg, Scott and Christophe
> * Use "uiomem->internal_addr" as if condition for sram memory free,
>   and memset the uiomem entry
> * Modified of_match_table make the driver apart from Cache-Sram HW info
>   which belong to the HW level driver fsl_85xx_cache_sram to match
> * Use roundup_pow_of_two for align calc(really learned a lot from Christophe)
> * Remove useless clear block of uiomem entries.
> * Use UIO_INFO_VER micro for info->version, and define it as
>   "devicetree,pseudo", meaning this is pseudo device and probed from
>   device tree configuration
> * Select FSL_85XX_CACHE_SRAM rather than depends on it
>
>Wang Wenhu (4):
>  powerpc: sysdev: fix compile error for fsl_85xx_l2ctlr
>  powerpc: sysdev: fix compile error for fsl_85xx_cache_sram
>  powerpc: sysdev: fix compile warning for fsl_85xx_cache_sram
>  drivers: uio: new driver for fsl_85xx_cache_sram
>
> arch/powerpc/sysdev/fsl_85xx_cache_sram.c |   3 +-
> arch/powerpc/sysdev/fsl_85xx_l2ctlr.c     |   1 +
> drivers/uio/Kconfig                       |   9 ++
> drivers/uio/Makefile                      |   1 +
> drivers/uio/uio_fsl_85xx_cache_sram.c     | 158 ++++++++++++++++++++++
> 5 files changed, 171 insertions(+), 1 deletion(-)
> create mode 100644 drivers/uio/uio_fsl_85xx_cache_sram.c
>
>-- 
>2.17.1
>