linux-toradex.git/include/scsi/scsi_eh.h, branch v4.9.94

libata: evaluate SCSI sense code

2016-04-04T16:07:41+00:00

Whenever a sense code is set it would need to be evaluated to
update the error mask.

tj: Cosmetic formatting updates.

Signed-off-by: Hannes Reinecke 
Signed-off-by: Tejun Heo

scsi: Move sense handling routines to scsi_common

2015-07-24T05:10:39+00:00

Sense data handling is also done in the target stack.
Hence, move sense handling routines to scsi_common so
the target will be able to use them as well.

Signed-off-by: Sagi Grimberg 
Reviewed-by: Bart Van Assche 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Martin K. Petersen 
Signed-off-by: Nicholas Bellinger

Move code that is used both by initiator and target drivers

2015-06-01T14:32:43+00:00

Move the functions that are used by both the initiator and target
subsystems into scsi_common.c/.h. This change will allow to remove
the initiator SCSI header include directives from most SCSI target
source files in a later patch.

Signed-off-by: Bart Van Assche 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Christoph Hellwig 
Signed-off-by: James Bottomley

libata-eh: Set 'information' field for autosense

2015-03-27T15:59:22+00:00

If NCQ autosense or the sense data reporting feature is enabled
the LBA of the offending command should be stored in the sense
data 'information' field.

Signed-off-by: Hannes Reinecke 
Signed-off-by: Tejun Heo

scsi: refactor scsi_reset_provider handling

2014-11-12T10:16:10+00:00

Pull the common code from the two callers into the function,
and rename it to scsi_ioctl_reset.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Martin K. Petersen 
Reviewed-by: Hannes Reinecke

scsi: use 'bool' as return value for scsi_normalize_sense()

2014-11-12T10:16:01+00:00

Convert scsi_normalize_sense() and friends to return 'bool'
instead of an integer.

Signed-off-by: Hannes Reinecke 
Reviewed-by: Robert Elliott 
Reviewed-by: Yoshihiro Yunomae 
Signed-off-by: Christoph Hellwig

scsi: use sdev as argument for sense code printing

2014-11-12T10:15:58+00:00

We should be using the standard dev_printk() variants for
sense code printing.

[hch: remove __scsi_print_sense call in xen-scsiback, Acked by Juergen]
[hch: folded bracing fix from Dan Carpenter]
Signed-off-by: Hannes Reinecke 
Reviewed-by: Robert Elliott 
Signed-off-by: Christoph Hellwig

scsi: add SG_SCSI_RESET_NO_ESCALATE flag to SG_SCSI_RESET ioctl

2014-11-12T10:15:54+00:00

Further to a January 2013 thread titled: "[PATCH] SG_SCSI_RESET ioctl
should only perform requested operation" by Jeremy Linton a patch (v3)
is presented that expands the existing ioctl to include "no_escalate"
versions to the existing resets. This requires no changes to SCSI low
level drivers (LLDs); it adds several more finely tuned reset options
to the user space. For example:

   /* This call remains the same, with the same escalating semantics
    * if the device (LU) reset fail. That is: on failure to try a
    * target reset and if that fails, try a bus reset, and if that fails
    * try a host (i.e. LLD) reset. */
   val = SG_SCSI_RESET_DEVICE;
   res = ioctl(, SG_SCSI_RESET, &val);

   /* What follows is a new option introduced by this patch series. Only
    * a device reset is attempted. If that fails then an appropriate
    * error code is provided. N.B. There is no reset escalation. */
   val = SG_SCSI_RESET_DEVICE | SG_SCSI_RESET_NO_ESCALATE;
   res = ioctl(, SG_SCSI_RESET, &val);

Signed-off-by: Douglas Gilbert 
Reviewed-by: Jeremy Linton 
Reviewed-by: Hannes Reinecke 
Signed-off-by: Christoph Hellwig

[SCSI] scsi_eh_prep_cmnd should save scmd->underflow

2008-07-26T19:14:56+00:00

This patch (as1116) fixes a bug in scsi_eh_prep_cmnd() and
scsi_eh_restore_cmnd().  These routines are supposed to save any
values they change and restore them later, but someone forgot to
save & restore scmd->underflow.

This fixes part of the problem reported in Bugzilla #9638.

[jejb: fix up rejections around DIF/DIX]
Signed-off-by: Alan Stern 
Signed-off-by: James Bottomley

[SCSI] Command protection operation

2008-07-26T19:14:54+00:00

Controllers that support DMA of protection information must be told
explicitly how to handle the I/O.  The controller has no knowledge of
the protection capabilities of the target device so this information
must be passed in the scsi_cmnd.

 - The protection operation tells the HBA whether to generate, strip or
   verify protection information.

 - The protection type tells the HBA which layout the target is
   formatted with.  This is necessary because the controller must be
   able to correctly interpret the included protection information in
   order to verify it.

 - When a scsi_cmnd is reused for error handling the protection
   operation must be cleared and saved while error handling is in
   progress.

 - prot_op and prot_type are placed in an existing hole in scsi_cmnd
   and don't cause the structure to grow.

Signed-off-by: Martin K. Petersen 
Signed-off-by: James Bottomley