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From: Stanley Chu <stanley.chu@mediatek.com>
To: linux-scsi@vger.kernel.org, martin.petersen@oracle.com,
	avri.altman@wdc.com, alim.akhtar@samsung.com,
	pedrom.sousa@synopsys.com
Cc: marc.w.gonzalez@free.fr, andy.teng@mediatek.com,
	chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com,
	evgreen@chromium.org, subhashj@codeaurora.org,
	linux-mediatek@lists.infradead.org, peter.wang@mediatek.com,
	vivek.gautam@codeaurora.org, matthias.bgg@gmail.com,
	sayalil@codeaurora.org, Stanley Chu <stanley.chu@mediatek.com>,
	linux-arm-kernel@lists.infradead.org, beanhuo@micron.com
Subject: [PATCH v1 0/3] scsi: ufs: add error handlings of auto-hibern8
Date: Mon, 13 May 2019 22:36:23 +0800	[thread overview]
Message-ID: <1557758186-18706-1-git-send-email-stanley.chu@mediatek.com> (raw)

Currently auto-hibern8 is activated if host supports
auto-hibern8 capability. However no error handlings are existed thus
this feature is kind of risky.

If "Hibernate Enter" or "Hibernate Exit" fail happens
during auto-hibern8 flow, the corresponding interrupt
"UIC_HIBERNATE_ENTER" or "UIC_HIBERNATE_EXIT" shall be raised
according to UFS specification.

This patch adds auto-hibern8 error handlings:

- Monitor "Hibernate Enter" and "Hibernate Exit" interrupts after
  auto-hibern8 feature is activated.
- If fail happens, trigger error handlings just like "manual-hibernate"
  fail and use the same flow: Identify errors and schedule UFS error
  handler in ufshcd_check_errors(), and then do host reset and restore
  in UFS error handler.

Stanley Chu (3):
  scsi: ufs: do not overwrite auto-hibern8 timer
  scsi: ufs: add error handling of auto-hibern8
  scsi: ufs: use re-factored auto_hibern8 function

 drivers/scsi/ufs/ufshcd.c | 16 +++++++++++++++-
 drivers/scsi/ufs/ufshcd.h | 13 +++++++++++++
 drivers/scsi/ufs/ufshci.h |  3 +++
 3 files changed, 31 insertions(+), 1 deletion(-)

-- 
2.18.0

WARNING: multiple messages have this Message-ID (diff)
From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <martin.petersen@oracle.com>,
	<avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
	<pedrom.sousa@synopsys.com>
Cc: marc.w.gonzalez@free.fr, andy.teng@mediatek.com,
	chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com,
	evgreen@chromium.org, subhashj@codeaurora.org,
	linux-mediatek@lists.infradead.org, peter.wang@mediatek.com,
	vivek.gautam@codeaurora.org, matthias.bgg@gmail.com,
	sayalil@codeaurora.org, Stanley Chu <stanley.chu@mediatek.com>,
	linux-arm-kernel@lists.infradead.org, beanhuo@micron.com
Subject: [PATCH v1 0/3] scsi: ufs: add error handlings of auto-hibern8
Date: Mon, 13 May 2019 22:36:23 +0800	[thread overview]
Message-ID: <1557758186-18706-1-git-send-email-stanley.chu@mediatek.com> (raw)

Currently auto-hibern8 is activated if host supports
auto-hibern8 capability. However no error handlings are existed thus
this feature is kind of risky.

If "Hibernate Enter" or "Hibernate Exit" fail happens
during auto-hibern8 flow, the corresponding interrupt
"UIC_HIBERNATE_ENTER" or "UIC_HIBERNATE_EXIT" shall be raised
according to UFS specification.

This patch adds auto-hibern8 error handlings:

- Monitor "Hibernate Enter" and "Hibernate Exit" interrupts after
  auto-hibern8 feature is activated.
- If fail happens, trigger error handlings just like "manual-hibernate"
  fail and use the same flow: Identify errors and schedule UFS error
  handler in ufshcd_check_errors(), and then do host reset and restore
  in UFS error handler.

Stanley Chu (3):
  scsi: ufs: do not overwrite auto-hibern8 timer
  scsi: ufs: add error handling of auto-hibern8
  scsi: ufs: use re-factored auto_hibern8 function

 drivers/scsi/ufs/ufshcd.c | 16 +++++++++++++++-
 drivers/scsi/ufs/ufshcd.h | 13 +++++++++++++
 drivers/scsi/ufs/ufshci.h |  3 +++
 3 files changed, 31 insertions(+), 1 deletion(-)

-- 
2.18.0


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2019-05-13 14:36 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-13 14:36 Stanley Chu [this message]
2019-05-13 14:36 ` [PATCH v1 0/3] scsi: ufs: add error handlings of auto-hibern8 Stanley Chu
2019-05-13 14:36 ` [PATCH v1 1/3] scsi: ufs: do not overwrite auto-hibern8 timer Stanley Chu
2019-05-13 14:36   ` Stanley Chu
2019-05-13 14:36 ` [PATCH v1 2/3] scsi: ufs: add error handling of auto-hibern8 Stanley Chu
2019-05-13 14:36   ` Stanley Chu
2019-05-13 18:21   ` [EXT] " Bean Huo (beanhuo)
2019-05-13 18:21     ` Bean Huo (beanhuo)
     [not found]     ` <BN7PR08MB568438668FC7C90A1284F53DDB0F0-7KdolmqvL8eEpBUohhTomJNArRD3w/9+vxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2019-05-14  6:58       ` Stanley Chu
2019-05-14  6:58         ` Stanley Chu
2019-05-14 11:14         ` Bean Huo (beanhuo)
2019-05-14 11:14           ` Bean Huo (beanhuo)
2019-05-15  2:52           ` Stanley Chu
2019-05-15  2:52             ` Stanley Chu
     [not found] ` <1557758186-18706-1-git-send-email-stanley.chu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-05-13 14:36   ` [PATCH v1 3/3] scsi: ufs: use re-factored auto_hibern8 function Stanley Chu
2019-05-13 14:36     ` Stanley Chu
2019-05-13 14:51 ` [PATCH v1 0/3] scsi: ufs: add error handlings of auto-hibern8 Marc Gonzalez
2019-05-13 14:51   ` Marc Gonzalez
2019-05-14  6:25   ` Stanley Chu
2019-05-14  6:25     ` Stanley Chu
     [not found]   ` <55818bc4-d464-bb35-25bb-9ef87af8224e-GANU6spQydw@public.gmane.org>
2019-05-20  5:58     ` Avri Altman
2019-05-20  5:58       ` Avri Altman

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