linux-kernel - Re: [PATCH v2 1/8] hisi_sas: add internal abort main code

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Date:   Wed, 24 Aug 2016 14:41:33 +0200
From:   Hannes Reinecke <hare@...e.de>
To:     John Garry <john.garry@...wei.com>, jejb@...ux.vnet.ibm.com,
        martin.petersen@...cle.com
Cc:     linuxarm@...wei.com, zhangfei.gao@...aro.org, xuwei5@...ilicon.com,
        john.garry2@...l.dcu.ie, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/8] hisi_sas: add internal abort main code

On 08/24/2016 01:05 PM, John Garry wrote:
> Add main code for internal abort functionality.
> 
> The internal abort features allows the host controller
> to abort commands which are still active in the
> controller but have not yet been sent to the slave
> device.
> 
> Typically a command only spends a relatively
> short time in the controller when compared to the
> amount of the time after it is sent to the slave
> device.
> Two modes of internal abort are supported:
> - device
> - individual command
> 
> For device, when the internal abort is issued all
> commands in the host for that device are aborted.
> For a single command, only that command is aborted
> if it is still in the host.
> 
> In HW the internal abort command is executed
> similar to any other sort of command, like SSP.
> 
> Signed-off-by: John Garry <john.garry@...wei.com>
> ---
>  drivers/scsi/hisi_sas/hisi_sas.h      |   8 ++
>  drivers/scsi/hisi_sas/hisi_sas_main.c | 163 ++++++++++++++++++++++++++++++++++
>  2 files changed, 171 insertions(+)
> 
Reviewed-by: Hannes Reinecke <hare@...e.com>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@...e.de			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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