linux-kernel - Re: [PATCH v7 5/5] scsi: ufs-qcom-ice: add Inline Crypto Engine (ICE) support for UFS

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Date:	Mon, 2 Feb 2015 14:36:29 -0000
From:	ygardi@...eaurora.org
To:	"Paul Bolle" <pebolle@...cali.nl>
Cc:	"Yaniv Gardi" <ygardi@...eaurora.org>,
	"Valentin Rothberg" <valentinrothberg@...il.com>,
	"Dov Levenglick" <dovl@...eaurora.org>,
	james.bottomley@...senpartnership.com, hch@...radead.org,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, santoshsy@...il.com,
	linux-scsi-owner@...r.kernel.org, subhashj@...eaurora.org,
	noag@...eaurora.org, draviv@...eaurora.org,
	"Yaniv Gardi" <ygardi@....qualcomm.com>,
	"Vinayak Holikatti" <vinholikatti@...il.com>,
	"James E.J. Bottomley" <jbottomley@...allels.com>
Subject: Re: [PATCH v7 5/5] scsi: ufs-qcom-ice: add Inline Crypto Engine
 (ICE) support for UFS

Paul,

we have decided to revert the ICE change that support UFS.
a change already uploaded:
look for subject:

[PATCH v1] Revert "scsi: ufs-qcom-ice: add Inline Crypto Engine (ICE)
support for UFS"

thanks,
Yaniv

> Yaniv,
>
> On Thu, 2015-01-15 at 16:32 +0200, Yaniv Gardi wrote:
>> From: Yaniv Gardi <ygardi@....qualcomm.com>
>>
>> In-order to enhance storage encryption performance,
>> an Inline Cryptographic Engine is introduced to UFS.
>> This patch adds in-line encryption capabilities to the UFS
>> driver.
>>
>> Signed-off-by: Yaniv Gardi <ygardi@...eaurora.org>
>
> This patch became commit 8805ccd069b7 ("ufs-qcom-ice: add Inline Crypto
> Engine (ICE) support for UFS") in today's linux-next (ie,
> next-20150123). I noticed because a script I use to check linux-next
> spotted a problem with it.
>
>> ---
>>  drivers/scsi/ufs/Kconfig        |  12 +
>>  drivers/scsi/ufs/Makefile       |   1 +
>>  drivers/scsi/ufs/ufs-qcom-ice.c | 520
>> ++++++++++++++++++++++++++++++++++++++++
>>  drivers/scsi/ufs/ufs-qcom-ice.h | 113 +++++++++
>>  drivers/scsi/ufs/ufs-qcom.c     |  56 ++++-
>>  drivers/scsi/ufs/ufs-qcom.h     |  25 ++
>>  6 files changed, 726 insertions(+), 1 deletion(-)
>>  create mode 100644 drivers/scsi/ufs/ufs-qcom-ice.c
>>  create mode 100644 drivers/scsi/ufs/ufs-qcom-ice.h
>>
>> diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig
>> index 8a1f4b3..ecf34ed 100644
>> --- a/drivers/scsi/ufs/Kconfig
>> +++ b/drivers/scsi/ufs/Kconfig
>> @@ -83,3 +83,15 @@ config SCSI_UFS_QCOM
>>
>>  	  Select this if you have UFS controller on QCOM chipset.
>>  	  If unsure, say N.
>> +
>> +config SCSI_UFS_QCOM_ICE
>> +	bool "QCOM specific hooks to Inline Crypto Engine for UFS driver"
>> +	depends on SCSI_UFS_QCOM && CRYPTO_DEV_QCOM_ICE
>
> There's currently no Kconfig symbol CRYPTO_DEV_QCOM_ICE in linux-next.
> So SCSI_UFS_QCOM_ICE can not be set and these "in-line encryption
> capabilities" can not be enabled.
>
>> +	help
>> +	  This selects the QCOM specific additions to support Inline Crypto
>> +	  Engine (ICE).
>> +	  ICE accelerates the crypto operations and maintains the high UFS
>> +	  performance.
>> +
>> +	  Select this if you have ICE supported for UFS on QCOM chipset.
>> +	  If unsure, say N.
>> diff --git a/drivers/scsi/ufs/Makefile b/drivers/scsi/ufs/Makefile
>> index 8303bcc..31adca5 100644
>> --- a/drivers/scsi/ufs/Makefile
>> +++ b/drivers/scsi/ufs/Makefile
>> @@ -1,5 +1,6 @@
>>  # UFSHCD makefile
>>  obj-$(CONFIG_SCSI_UFS_QCOM) += ufs-qcom.o
>> +obj-$(CONFIG_SCSI_UFS_QCOM_ICE) += ufs-qcom-ice.o
>>  obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o
>>  obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o
>>  obj-$(CONFIG_SCSI_UFSHCD_PLATFORM) += ufshcd-pltfrm.o
>> diff --git a/drivers/scsi/ufs/ufs-qcom-ice.c
>> b/drivers/scsi/ufs/ufs-qcom-ice.c
>> new file mode 100644
>> index 0000000..9202b73
>> --- /dev/null
>> +++ b/drivers/scsi/ufs/ufs-qcom-ice.c
>> @@ -0,0 +1,520 @@
>> +/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License version 2 and
>> + * only version 2 as published by the Free Software Foundation.
>> + *
>> + * 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.
>> + */
>> +
>> +#include <linux/of.h>
>> +#include <linux/async.h>
>> +#include <linux/blkdev.h>
>> +#include <crypto/ice.h>
>
> This header is not included in linux-next so manually building
> ufs-qcom-ice.o isn't possible either.
>
> I assume a series to add CRYPTO_DEV_QCOM_ICE and crypto/ice.h (and
> whatever else is needed to build this) is queued somewhere. Is that
> correct?
>
>
> Paul Bolle
>
> --
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