linux-kernel - Re: [PATCH] uio: uio_xilinx_apm: Add Xilinx AXI performance monitor driver

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Date:   Mon, 9 Dec 2019 11:33:05 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     shubhrajyoti.datta@...il.com
Cc:     linux-kernel@...r.kernel.org, michal.simek@...inx.com,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>,
        Subbaraya Sundeep Bhatta <sbhatta@...inx.com>,
        Ranjit Waghmode <ranjit.waghmode@...inx.com>
Subject: Re: [PATCH] uio: uio_xilinx_apm: Add Xilinx AXI performance monitor
 driver

On Mon, Dec 09, 2019 at 03:37:15PM +0530, shubhrajyoti.datta@...il.com wrote:
> From: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
> 
> Added driver for Xilinx AXI performance monitor IP.
> 
> Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@...inx.com>
> Signed-off-by: Ranjit Waghmode <ranjit.waghmode@...inx.com>
> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
> ---
>  drivers/uio/Kconfig          |  12 ++
>  drivers/uio/Makefile         |   1 +
>  drivers/uio/uio_xilinx_apm.c | 369 +++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 382 insertions(+)
>  create mode 100644 drivers/uio/uio_xilinx_apm.c
> 
> diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
> index 202ee81..de30312 100644
> --- a/drivers/uio/Kconfig
> +++ b/drivers/uio/Kconfig
> @@ -165,4 +165,16 @@ config UIO_HV_GENERIC
>  	  to network and storage devices from userspace.
>  
>  	  If you compile this as a module, it will be called uio_hv_generic.
> +
> +config UIO_XILINX_APM
> +	tristate "Xilinx AXI Performance Monitor driver"
> +	depends on MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP
> +	help
> +	  This driver is developed for AXI Performance Monitor IP, designed to
> +	  monitor AXI4 traffic for performance analysis of AXI bus in the
> +	  system. Driver maps HW registers and parameters to userspace.
> +
> +	  To compile this driver as a module, choose M here; the module
> +	  will be called uio_xilinx_apm.
> +
>  endif
> diff --git a/drivers/uio/Makefile b/drivers/uio/Makefile
> index c285dd2..b3464d8 100644
> --- a/drivers/uio/Makefile
> +++ b/drivers/uio/Makefile
> @@ -11,3 +11,4 @@ obj-$(CONFIG_UIO_PRUSS)         += uio_pruss.o
>  obj-$(CONFIG_UIO_MF624)         += uio_mf624.o
>  obj-$(CONFIG_UIO_FSL_ELBC_GPCM)	+= uio_fsl_elbc_gpcm.o
>  obj-$(CONFIG_UIO_HV_GENERIC)	+= uio_hv_generic.o
> +obj-$(CONFIG_UIO_XILINX_APM)	+= uio_xilinx_apm.o
> diff --git a/drivers/uio/uio_xilinx_apm.c b/drivers/uio/uio_xilinx_apm.c
> new file mode 100644
> index 0000000..90d70a5
> --- /dev/null
> +++ b/drivers/uio/uio_xilinx_apm.c
> @@ -0,0 +1,369 @@
> +/*
> + * Xilinx AXI Performance Monitor
> + *
> + * Copyright (C) 2013 Xilinx, Inc. All rights reserved.

You have not touched this since 2013???

> + *
> + * Description:
> + * This driver is developed for AXI Performance Monitor IP,
> + * designed to monitor AXI4 traffic for performance analysis
> + * of AXI bus in the system. Driver maps HW registers and parameters
> + * to userspace. Userspace need not clear the interrupt of IP since
> + * driver clears the interrupt.
> + *
> + * This program is free software: you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, version 2 of the License.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program.  If not, see <http://www.gnu.org/licenses/>.
> + */

Did you run this through checkpatch?  Please do so and add the proper
spdx header and remove all of the license boiler-plate text.

thanks,

greg k-h