linux-kernel - RE: [PATCH v5 1/1] scsi: ufs: core: add device level exception support

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Message-ID:
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Date: Sun, 30 Mar 2025 12:13:54 +0000
From: Arthur Simchaev <Arthur.Simchaev@...disk.com>
To: "Bao D. Nguyen" <quic_nguyenb@...cinc.com>, "quic_cang@...cinc.com"
	<quic_cang@...cinc.com>, "bvanassche@....org" <bvanassche@....org>,
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	<peter.wang@...iatek.com>, "manivannan.sadhasivam@...aro.org"
	<manivannan.sadhasivam@...aro.org>, "minwoo.im@...sung.com"
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CC: "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>, Alim Akhtar
	<alim.akhtar@...sung.com>, "James E.J. Bottomley"
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	Keoseong Park <keosung.park@...sung.com>, Ziqi Chen
	<quic_ziqichen@...cinc.com>, Gwendal Grignou <gwendal@...omium.org>, Al Viro
	<viro@...iv.linux.org.uk>, Eric Biggers <ebiggers@...gle.com>, open list
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 support:Keyword:mediatek" <linux-arm-kernel@...ts.infradead.org>, "moderated
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Subject: RE: [PATCH v5 1/1] scsi: ufs: core: add device level exception
 support

> Subject: [PATCH v5 1/1] scsi: ufs: core: add device level exception support
> 
> The ufs device JEDEC specification version 4.1 adds support for the device level
> exception events. To support this new device level exception feature, expose
> two new sysfs nodes below to provide the user space access to the device level
> exception information.
> /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_count
> /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_id
> 
> The device_lvl_exception_count sysfs node reports the number of device level
> exceptions that have occurred since the last time this variable is reset. Writing
> a value of 0 will reset it.
> The device_lvl_exception_id reports the exception ID which is the
> qDeviceLevelExceptionID attribute of the device JEDEC specifications version
> 4.1 and later. The user space application can query these sysfs nodes to get
> more information about the device level exception.
> 
> Signed-off-by: Bao D. Nguyen <quic_nguyenb@...cinc.com>
> Reviewed-by: Peter Wang <peter.wang@...iatek.com>
> Reviewed-by: Bart Van Assche <bvanassche@....org>

Reviewed-by: Arthur Simchaev <arthur.simchaev@...disk.com>