From: Diana Craciun OSS <diana.craciun@oss.nxp.com>
To: Andrew Lunn <andrew@lunn.ch>, Diana Craciun <diana.craciun@nxp.com>
Cc: linux-kernel@vger.kernel.org, laurentiu.tudor@nxp.com,
gregkh@linuxfoundation.org, stuyoder@gmail.com,
leoyang.li@nxp.com, bharatb.linux@gmail.com,
Bharat Bhushan <Bharat.Bhushan@nxp.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 03/13] bus/fsl-mc: add support for 'driver_override' in the mc-bus
Date: Mon, 6 Jul 2020 19:35:50 +0300 [thread overview]
Message-ID: <2267de0c-0ee8-b277-4de8-0cc48fff14f5@oss.nxp.com> (raw)
In-Reply-To: <20200706135717.GB919533@lunn.ch>
Hi Andrew,
I apologize, I somehow missed you previous comment.
OK, I see that there are a number of drivers using the same code. In
case we share the code, probably we need to store the driver_override
value in the struct device (not in the particular driver device
structure as it is done now).
Diana
On 7/6/2020 4:57 PM, Andrew Lunn wrote:
> Hi Diana
>
> On Mon, Jul 06, 2020 at 03:42:33PM +0300, Diana Craciun wrote:
>> From: Bharat Bhushan <Bharat.Bhushan@nxp.com>
>>
>> This patch is required for vfio-fsl-mc meta driver to successfully bind
>> layerscape container devices for device passthrough. This patch adds
>> a mechanism to allow a layerscape device to specify a driver rather than
>> a layerscape driver provide a device match.
>>
>> Example to allow a device (dprc.1) to specifically bind
>> with driver (vfio-fsl-mc):-
>> - echo vfio-fsl-mc > /sys/bus/fsl-mc/devices/dprc.1/driver_override
>> - echo dprc.1 > /sys/bus/fsl-mc/drivers/fsl_mc_dprc/unbind
>> - echo dprc.1 > /sys/bus/fsl-mc/drivers/vfio-fsl-mc/bind
> Something i asked before, why is this buried in a driver, when it
> could be put in the driver core. This is not the only driver doing
> this, so it does make sense to share the code and bugs.
>
> Andrew
next prev parent reply other threads:[~2020-07-06 16:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-06 12:42 [PATCH v3 00/13] bus/fsl-mc: Extend mc-bus driver functionalities in preparation for mc-bus VFIO support Diana Craciun
2020-07-06 12:42 ` [PATCH v3 01/13] bus/fsl-mc: Do no longer export the total number of irqs outside dprc_scan_objects Diana Craciun
2020-07-06 12:42 ` [PATCH v3 02/13] bus/fsl-mc: Add a new parameter to dprc_scan_objects function Diana Craciun
2020-07-06 12:42 ` [PATCH v3 03/13] bus/fsl-mc: add support for 'driver_override' in the mc-bus Diana Craciun
2020-07-06 13:57 ` Andrew Lunn
2020-07-06 16:35 ` Diana Craciun OSS [this message]
2020-07-06 12:42 ` [PATCH v3 04/13] bus/fsl-mc: Set the QMAN/BMAN region flags Diana Craciun
2020-07-06 12:42 ` [PATCH v3 05/13] bus/fsl-mc: Cache the DPRC API version Diana Craciun
2020-07-06 12:42 ` [PATCH v3 06/13] bus/fsl-mc: Add dprc-reset-container support Diana Craciun
2020-07-06 12:42 ` [PATCH v3 07/13] bus/fsl-mc: Export a dprc scan function to be used by multiple entities Diana Craciun
2020-07-06 12:42 ` [PATCH v3 08/13] bus/fsl-mc: Export a cleanup function for DPRC Diana Craciun
2020-07-06 12:42 ` [PATCH v3 09/13] bus/fsl-mc: Add a container setup function Diana Craciun
2020-07-06 12:42 ` [PATCH v3 10/13] bus/fsl_mc: Do not rely on caller to provide non NULL mc_io Diana Craciun
2020-07-06 12:42 ` [PATCH v3 11/13] bus/fsl-mc: Export IRQ pool handling functions to be used by VFIO Diana Craciun
2020-07-06 12:42 ` [PATCH v3 12/13] bus/fsl-mc: Extend ICID size from 16bit to 32bit Diana Craciun
2020-07-06 12:42 ` [PATCH v3 13/13] bus/fsl-mc: Add a new version for dprc_get_obj_region command Diana Craciun
2020-07-06 13:14 ` Laurentiu Tudor
2020-07-06 15:49 ` Diana Craciun OSS
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