- 26 Aug, 2013 4 commits
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Sujit Reddy Thumma authored
Add runtime PM helpers to suspend/resume UFS controller at runtime. Enable runtime PM by default for pci and platform drivers as the initialized hardware can suspend if it is not used after bootup. Signed-off-by:
Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by:
Santosh Y <santoshsy@gmail.com> Signed-off-by:
James Bottomley <JBottomley@Parallels.com>
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Sujit Reddy Thumma authored
Background operations in the UFS device can be disabled by the host to reduce the response latency of transfer requests. Add support for enabling/disabling the background operations during runtime suspend/resume of the device. If the device is in critical need of BKOPS it will raise an URGENT_BKOPS exception which should be handled by the host to make sure the device performs as expected. During bootup, the BKOPS is enabled in the device by default. The disable of BKOPS is supported only when the driver supports runtime suspend/resume operations as the runtime PM framework provides a way to determine the device idleness and hence BKOPS can be managed effectively. During runtime resume the BKOPS is disabled to reduce latency and during runtime suspend the BKOPS is enabled to allow device to carry out idle time BKOPS. In some cases where the BKOPS is disabled during runtime resume and due to continuous data transfers the runtime suspend is not triggered, the BKOPS is enabled when the device raises a level-2 exception (outstanding operations - performance impact). Signed-off-by:
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Dolev Raviv authored
Allow UFS device to complete its initialization and accept SCSI commands by setting fDeviceInit flag. The device may take time for this operation and hence the host should poll until fDeviceInit flag is toggled to zero. This step is mandated by UFS device specification for device initialization completion. Signed-off-by:
Dolev Raviv <draviv@codeaurora.org> Signed-off-by:
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Sujit Reddy Thumma authored
As part of device initialization sequence, sending NOP OUT UPIU and waiting for NOP IN UPIU response is mandatory. This confirms that the device UFS Transport (UTP) layer is functional and the host can configure the device with further commands. Add support for sending NOP OUT UPIU to check the device connection path and test whether the UTP layer on the device side is functional during initialization. A tag is acquired from the SCSI tag map space in order to send the device management command. When the tag is acquired by internal command the scsi command is rejected with host busy flag in order to requeue the request. To avoid frequent collisions between internal commands and scsi commands the device management command tag is allocated in the opposite direction w.r.t block layer tag allocation. Signed-off-by:
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- 23 Aug, 2013 34 commits
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Adheer Chandravanshi authored
Signed-off-by:
Adheer Chandravanshi <adheer.chandravanshi@qlogic.com> Signed-off-by:
Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
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Adheer Chandravanshi authored
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Saurav Kashyap authored
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Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by:
Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by:
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Adheer Chandravanshi authored
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Adheer Chandravanshi authored
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Adheer Chandravanshi authored
Flash target index 0 and 1 are reserved for boot target entries created with BIOS utility. Signed-off-by:
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Adheer Chandravanshi authored
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Adheer Chandravanshi authored
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Adheer Chandravanshi authored
While setting the values for DDB, discovery_parent_idx needs to be used instead of discovery_parent_type. Signed-off-by:
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Adheer Chandravanshi authored
If logout is performed on a failed session entry then that session should be gracefully removed. Signed-off-by:
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James Smart authored
Signed-off-by:
James Smart <james.smart@emulex.com> Signed-off-by:
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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Vikas Chaudhary authored
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Adheer Chandravanshi authored
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Adheer Chandravanshi authored
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Adheer Chandravanshi authored
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Eddie Wai authored
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Eddie Wai <eddie.wai@broadcom.com> Signed-off-by:
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Eddie Wai authored
Old version: 2.7.2.2 New version: 2.7.6.2 Signed-off-by:
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Vikas Chaudhary authored
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Hannes Reinecke authored
When a medium error is detected the SCSI stack should return ENODATA to the upper layers. [jejb: fix whitespace error] Signed-off-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
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Hannes Reinecke authored
When the thin provisioning hard threshold is reached we should return ENOSPC to inform upper layers about this fact. Signed-off-by:
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Hannes Reinecke authored
We should be modifying the host_byte status in scsi_check_sense() directly; this saves us to introduce a special return code for each and every condition. Signed-off-by:
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Hannes Reinecke authored
Document the various error codes returned on I/O failure. Signed-off-by:
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- 21 Aug, 2013 2 commits
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Greg Kroah-Hartman authored
The dev_attrs field of struct class is going away soon, dev_groups should be used instead. This converts the scsi tape class code to use the correct field. Cc: Kai Mäkisara <Kai.Makisara@kolumbus.fi> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Greg Kroah-Hartman authored
The dev_attrs field of struct class is going away soon, dev_groups should be used instead. This converts the scsi disk class code to use the correct field. It required some functions to be moved around to place the show and store functions next to each other, the old order seemed to make no sense at all. Signed-off-by:
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