- 26 Jul, 2008 40 commits
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Martin K. Petersen authored
If a disk is formatted with protection information (Inquiry bit PROTECT=1) it is required to support Read Capacity(16). Force use of the 16-bit command in this case and extract the P_TYPE field which indicates whether the disk is formatted using DIF Type 1, 2 or 3. The ATO (App Tag Own) bit in the Control Mode Page indicates whether the storage device or the initiator own the contents of the DIF application tag. Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
James Bottomley <James.Bottomley@HansenPartnership.com>
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Martin K. Petersen authored
If initiator or target reject the I/O due to DIF errors there is no point in retrying. Signed-off-by:
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Martin K. Petersen authored
Implement support for DMA of protection information for devices that are data integrity capable. - Add support for mapping an extra scatter-gather list containing the protection information. - Allocate protection scsi_data_buffer if host is DIX (integrity DMA) capable. - Accessor function for checking whether a device has protection enabled. Signed-off-by:
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Martin K. Petersen authored
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:
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Martin K. Petersen authored
Controllers that support protection information must indicate this to the SCSI midlayer so that the ULD can prepare scsi_cmnds accordingly. This patch implements a host mask and various types of protection: - DIF Type 1-3 (between HBA and disk) - DIX Type 0-3 (between OS and HBA) The patch also allows the HBA to set the guard type to something different than the T10-mandated CRC. Signed-off-by:
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Hannes Reinecke authored
Create a cache of devices that are seen in a system. This will avoid the unnecessary traversal of the device list in the scsi_dh when there are multiple luns of a same type. Signed-off-by:
Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
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Hannes Reinecke authored
multipath keeps a separate device table which may be more current than the built-in one. So we should make sure to always call ->attach whenever a multipath map with hardware handler is instantiated. And we should call ->detach on removal, too. [sekharan: update as per comments from agk] Signed-off-by:
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Hannes Reinecke authored
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Hannes Reinecke authored
This patch updates the RDAC device handler to refuse to attach to devices not supporting the RDAC vpd pages. Signed-off-by:
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Hannes Reinecke authored
This patch updates the hp_sw device handler to properly check the return codes etc. And adds the 'correct' machine definitions. Signed-off-by:
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Hannes Reinecke authored
This patch converts the EMC device handler to use a proper state machine. We now also parse the extended INQUIRY information to determine if long trespass commands are supported. And we're now using the long trespass command correctly. And finally there's now an check at init time to refuse to attach to devices not supporting EMC-specific VPD pages. Signed-off-by:
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Hannes Reinecke authored
Implement a 'dh_state' sdev attribute for dynamic device handler manipulation. A read on the attribute will return the name of the currently attached device handler or 'detached' if no handler is attached. The attribute allows the following strings to be written: - The name of the device handler to be attached if the state is 'detached'. - 'activate' to trigger path activation if a device handler is attached. - 'detach' to detach the currently attached device handler. Signed-off-by:
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Hannes Reinecke authored
Instead of having each and every driver implement its own device table scanning code we should rather implement a common routine and scan the device tables there. This allows us also to implement a general notifier chain callback for all device handler instead for one per handler. [sekharan: Fix rejections caused by conflicting bug fix] Signed-off-by:
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Matthew Wilcox authored
Daniel Debonzi reports that he has managed to wrap host_no. Increasing the number of host numbers available to 32-bit from 16-bit allows the problem to be evaded for another hundred years. Signed-off-by:
Matthew Wilcox <willy@linux.intel.com> Signed-off-by:
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Tejun Heo authored
Update index allocation as follows. * sd_index_idr is used only for ID allocation and mapping functionality is not used. Use more memory efficient ida instead. * idr and ida have their own locks inside them and don't need them for operation. Drop it. * index wasn't freed if probing failed after index allocation. fix it. * ida allocation should be repeated if it fails with -EAGAIN. Signed-off-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Mike Christie authored
When drivers use a shared tag map we can end up with more requests than tags, because the tag map is shost->can_queue tags and there can be sdevs * sdev->queue_depth requests. In scsi_request_fn if tag allocation fails we just drop down to just dequeueing the tag without a tag. The problem is that drivers using the shared tag map rely on a valid tag always being set, because it will use the tag number to lookup commands later. This patch has us check if we got a valid tag when the host lock is held right before we check if the host queue is ready. We do the check here because to allocate the tag we need the q lock, but if the tag is bad we want to add the device/q onto the starved list which requires the host lock. Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
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Mike Christie authored
We want to set the queue depth to something reasonable - not the can_queue. Signed-off-by:
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Mike Christie authored
We want to set the queue depth to something reasonable - not the can_queue. Signed-off-by:
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Mike Christie authored
Currently qla4xxx and stex pass in their can_queue values into scsi_activate_tcq because they wanted the tag map that large. The problem with this is that it ends up also setting the queue depth to that large value. All we want to do this in this case is set the device queue depth and the other device settings. We do not need to touch the tag map sizing because the drivers had setup that map according to their can_queue limits when the shared map was created. The scsi mid layer in request_fn will then handle the case where we have more requests than available tags when it checks the host queue ready function. Signed-off-by:
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Kai Makisara authored
Mike Christie noticed a bogus memset. It can be removed as dead code since the number of bytes in the driver buffer in fixed block mode is always a multiple of the tape block size. Signed-off-by:
Kai Mäkisara <Kai.Makisara@kolumbus.fi> Signed-off-by:
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Kai Makisara authored
Move buffer pointer back when data could not be written. Bug found by Mike Christie. Signed-off-by:
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Andrew Vasquez authored
Signed-off-by:
Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by:
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Andrew Vasquez authored
Use the full buffer size available, as there's no reason to limit the firwmare-image load-segment size for these parts. Signed-off-by:
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Andrew Vasquez authored
Add an additional check to verify that the current executing firmware is in fact non-ROM code. The non-ROM Get-ID mailbox command is used for verification. Signed-off-by:
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Andrew Vasquez authored
Total ram words can exceed a 16bit value on large-memory boards. Safely extend to a 32bit width. Signed-off-by:
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Andrew Vasquez authored
Firmware does not have the facilities to issue management server IOCBs. Signed-off-by:
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Seokmann Ju authored
There were several issues here, one, during RSCN handling if a follow-on RSCN occurred (within interrupt context) the DPC thread could inadvertantly leave the fcport in a stale lost state. Secondly, scheduled rport removal is handled exclusively by the 'parent' DPC thread, so wake up the proper thread. Finally, process vport loop-resync's only when the vport has in an "active" state (ID acquired). Signed-off-by:
Seokmann Ju <seokmann.ju@qlogic.com> Signed-off-by:
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Seokmann Ju authored
By allowing the qla2x00_alert_all_vps() to manage per-vport recognition of the MBA. Signed-off-by:
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Seokmann Ju authored
All fcport->state management should be done within qla2x00_mark_device_lost(), the assignment of state within qla2x00_mark_vp_devices_dead() caused associated rports to not be removed. Signed-off-by:
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Seokmann Ju authored
While issuing a marker, manipulating the request/response queues and modifying the outstanding command array. Signed-off-by:
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Andrew Vasquez authored
The firmware group has suggested that FCE (Fibre Channel Event) tracing be enabled prior to EFT (Extended Firmware Tracing) to maximize the capturing of data on the wire. This change has no real semantic effect on driver operation, as it's mostly a shuffling of code. Signed-off-by:
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Joe Carnuccio authored
Recent ISPs have this information written at manufacturing time, so use the information. This also reduces future churn of the qla_devtbl.h file contents, as the driver can now depend on the information to be present in VPD. Signed-off-by:
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Andrew Vasquez authored
iIDMA support requires the driver issue several additional fabric-managegment (FM) commands per port discovered during SNS scanning -- GFPN (Get Fabric Port Name) and GPSC (Get Port Speed Capabilities). It has been found during testing that some switches do not respond as *well* as expected to these commands (silence -- no ACC nor BS_RJT). So, to handle such conditions, allow the user the ability to indirectly disable the FM commands by disabling iIDMA with the ql2xiidmaenable module-parameter. Signed-off-by:
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Seokmann Ju authored
Removed repeated or unnecessary operations during vport creation/deletion. Signed-off-by:
Shyam Sundar <shyam.sundar@qlogic.com> Signed-off-by:
Ravi Anand <ravi.anand@qlogic.com> Signed-off-by:
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Harish Zunjarrao authored
Signed-off-by:
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Harish Zunjarrao authored
This parameter counts the total number of ISP aborts during driver execution. The value is exported through a DEVICE_ATTR() off the scsi_host. Signed-off-by:
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Andrew Vasquez authored
As there's no point in adding a fixed-fudge value (originally 5 seconds), honor the user settings only. We also remove the driver's dead-callback get_rport_dev_loss_tmo function (qla2x00_get_rport_loss_tmo()). Signed-off-by:
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Seokmann Ju authored
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Andrew Vasquez authored
Commit 2c96d8d0 pushed the acquisition of hardware_lock to too fine a level, which in turn will cause problems with cond_resched()s added with 40a2e34a. Signed-off-by:
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Roland McGrath authored
The new code in commit 5cbf1565 has a bug in the version supporting the AMD 'syscall' instruction. It clobbers the user's %ecx register value (with the %ebp value). This change fixes it. Signed-off-by:
Roland McGrath <roland@redhat.com>
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