- Sep 06, 2015
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Calvin Owens authored
These objects can be referenced concurrently throughout the driver, we need a way to make sure threads can't delete them out from under each other. This patch adds the refcount, and refactors the code to use it. Additionally, we cannot iterate over the sas_device_list without holding the lock, or we risk corrupting random memory if items are added or deleted as we iterate. This patch refactors _scsih_probe_sas() to use the sas_device_list in a safe way. Signed-off-by:
Calvin Owens <calvinowens@fb.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Nicholas Bellinger <nab@linux-iscsi.org> Tested-by:
Chaitra Basappa <chaitra.basappa@avagotech.com> Acked-by:
Sreekanth Reddy <sreekanth.reddy@avagotech.com> Signed-off-by:
James Bottomley <JBottomley@Odin.com>
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- Aug 28, 2015
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Hannes Reinecke authored
When calling scsi_dh_activate() we should be returning SCSI_DH_NOTCONN if the device handler couldn't be attached. Reviewed-by:
Bart van Assche <bart.vanassche@sandisk.com> Reviewed-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
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Christoph Hellwig authored
The I/O submission and completion paths call into the device handler without any synchronization agains detachment. So disallow detaching device handlers at runtime. Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by:
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Christoph Hellwig authored
And cleanup the various messy opencoded versions of this. Note that this moves the sdev_state checks outside the queue_lock coverage, but as we don't hold the lock over the activation they are only advisory anyway. Signed-off-by:
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Christoph Hellwig authored
Add a ->handler and a ->handler_data field to struct scsi_device and kill this indirection. Also move struct scsi_device_handler to scsi_dh.h so that changes to it don't require rebuilding every SCSI LLDD. Signed-off-by:
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Christoph Hellwig authored
Add a single list of devices that need non-ALUA device handlers to the core scsi_dh code so that we can autoload the modules for them at probe time. While this is a little ugly in terms of architecture it actually significantly simplifies the code in addition to the new autoloading functionality. Signed-off-by:
Mike Snitzer <snitzer@redhat.com> Signed-off-by:
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Christoph Hellwig authored
Stop building scsi_dh as a separate module and integrate it fully into the core SCSI code with explicit callouts at bus scan time. For now the callouts are placed at the same point as the old bus notifiers were called, but in the future we will be able to look at ALUA INQUIRY data earlier on. Note that this also means that the device handler modules need to be loaded by the time we scan the bus. The next patches will add support for autoloading device handlers at bus scan time to make sure they are always loaded if they are enabled in the kernel config. Signed-off-by:
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Christoph Hellwig authored
Prepare for building scsi_dh.c into the core SCSI module by moving it to drivers/scsi. Signed-off-by:
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Christoph Hellwig authored
This way we can reused the same code any attachment method, not just those requested from dm-mpath. [jejb: fixup checkpatch error] Signed-off-by:
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Christoph Hellwig authored
While allowing dm-mpath to attach device handlers is a functionality we need for backwards compatibility reason there is no reason to reference count them and detach them if dm-mpath stops using the device for some reason. If the device handler works for the given device it can just stay attached, and we can take the retain_hw_handler codepath. Signed-off-by:
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Hannes Reinecke authored
If no user settings are found it's pointless trying to read them from flash. So skip that step. This also fixes a compilation warning about uninitialized variables in aic94xx. Signed-off-by:
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Gabriel Krisman Bertazi authored
Remove unnecessary check that disabled SIS pipe commands for SIS-32 devices. This change was sufficient to enable raw mode and send SIS pipe commands for a 57B3 device. Fixes: f8ee25d7 ("ipr: AF DASD raw mode implementation in ipr driver") Signed-off-by:
Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Reviewed-by:
Wen Xiong <wenxiong@linux.vnet.ibm.com> Acked-by:
Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
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Gabriel Krisman Bertazi authored
Disable underlength error verification based on count of bytes actually transferred for AF DASD devices when SIS pipe mode is enabled. This avoids unexpected underlength errors when issuing some commands in raw mode. Signed-off-by:
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- Aug 27, 2015
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Sreekanth Reddy authored
Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Sreekanth Reddy authored
Issue: When the disks are getting discovered and assigned device handles by the kernel, a device block followed by an unblock (due to broadcast primitives) issued by the driver is interspersed by the kernel changing the state of the device. Therefore the unblock by the driver results in a no operation within the kernel API. To fix this one, the below patch checks the return of the unblock API and performs a block followed by an unblock to unfreeze the block layer's I/O queue. Sufficient checks and prints are also added in the driver to identify this condition caused by the kernel. Signed-off-by:
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Sreekanth Reddy authored
Added dma_mapping_error() API after mapping an address with dma_map_single() API. Otherwise when CONFIG_DMA_API_DEBUG is enabled in the kernel, then it complains about mpt3sas driver not calling dma_mapping_error after mapping an address with dma_map_single Signed-off-by:
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Sreekanth Reddy authored
Created a thread using alloc_ordered_workqueue() API in order to process the works from firmware Work-queue sequentially instead of create_singlethread_workqueue() API. Signed-off-by:
Joe Lawrence <joe.lawrence@stratus.com> Signed-off-by:
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Sreekanth Reddy authored
"VendorID" "DeviceID" "SubsystemVendor ID" "SubsystemDevice ID" Cisco Branding String 0x1000 0x97 0x1137 0x154 Cisco 9300-8i 12Gbps SAS HBA 0x1000 0x97 0x1137 0x155 Cisco 12G Modular SAS Pass through Controller 0x1000 0x97 0x1137 0x156 UCS C3X60 12G SAS Pass through Controller Signed-off-by:
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Sreekanth Reddy authored
mpt3sas: Return host busy error status to SML when DMA mapping of scatter gather list fails for a SCSI command scsi_dma_map API will return a negative value (i.e. -ENOMEM) if DMA mapping of sg lists fails and zero if the sg list in the SCSI cmd is NULL. But drivers doesn't handled sg list DMA mapping failure case properly. So, Updated the code to return host busy error status to SCSI MID Layer(SML), when DMA mapping of scatter gather list fails for a SCSI command. So that SML will retry this SCSI cmd after some time. Signed-off-by:
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Sreekanth Reddy authored
For any SCSI command, if the driver receives IOC status = SCSI_IOC_TERMINATED and log info = 0x32010081 then that command will be completed with DID_RESET host status. The definition of this log info value is "Virtual IO has failed and has to be retried". Firmware will provide this log info value with IOC Status "SCSI_IOC_TERMINATED", whenever a drive (with is a part of a volume) is pulled and pushed back within some minimal delay. With this log info value, firmware informs the driver to retry the failed IO command infinite times, so to provide some time for the firmware to discover the reinserted drive successfully instated of just retrying failed command for five times(doesn't giving enough time for firmware to complete the drive discovery) and failing the IO permanently even though drive came back successfully. Signed-off-by:
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Sreekanth Reddy authored
Below are the new changes to MPI 2.5 Rev K(2.5.6) specification and 2.00.35 header files 1) Added a minimum size requirement for target mode command buffers. 2) Added MinMSIxIndex and MaxMSIxIndex fields to CommandBufferPostBase Request. 3) For BIOS Page 1, added SSUTimeout field, and added Product Name String Format bits to the BiosOptions field Signed-off-by:
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Sreekanth Reddy authored
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Sreekanth Reddy authored
Add the following OEM's branding to the mpt3sas driver. "VendorID" "DeviceID" "SubsystemVendor ID" "SubsystemDevice ID" Cisco Branding String 0x1000 0x97 SVID = 0x1137 0x014C Cisco 9300-8E 12G SAS HBA Signed-off-by:
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Sreekanth Reddy authored
Added the following Dell branding to the mpt3sas driver. "VendorID" "DeviceID" "SubsystemVendor ID" "SubsystemDevice ID" Dell Branding String 0x1000 0x0097 0x1028 0x1F46 DELL 12Gbps HBA Signed-off-by:
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Sreekanth Reddy authored
Following is the change set, 1. Added more defines for the BiosOptions field of MPI2_CONFIG_PAGE_BIOS_1. 2. Added MPI2_TOOLBOX_CLEAN_BIT26_PRODUCT_SPECIFIC definition. Signed-off-by:
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Sreekanth Reddy authored
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Sreekanth Reddy authored
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Sreekanth Reddy authored
This Patch will provide more details of the devices such as slot number, enclosure logical id, enclosure level & connector name in the following scenarios, - When end device is added in the topology, - When the end device is removed from the setup, - When the SCSI mid layer issues TASK ABORT/ DEVICE RESET/ TARGET RESET during error handling, - When any command to the device fails with Sense key Hardware error or Medium error or Unit Attention, - When firmware returns device error or device not ready status for the end device, - When a Predicted fault is detected on an end device. This information can be used by the user to identify the location of the desired drive in the topology. Driver will get these information by reading the sas device page0. Signed-off-by:
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Sreekanth Reddy authored
Update MPI 2.5 Release: MPI 2.5 Rev I (2.5.4) specification and 2.00.33 header files Below is the change set from the MPI specification for I Rev 1) Added Base Enclosure Level bit to the Flags field of Manufacturing Page 7. 2) Updated description of the MaxTargetPortConnectTime field of SAS IO Unit Page 1. 3) Added EnclosureLevel and ConnectorName fields to SAS Device Page 0. Also, added EnclosureLevel and ConnectorName Valid bit to the Flags field. 4) Added EnclosureLevel field to SAS Enclosure Page 0. Also, added EnclosureLevel Valid bit to the Flags field. 5) Added value for BIOS image to HashImageType. Signed-off-by:
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Sreekanth Reddy authored
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Sreekanth Reddy authored
During hot-plugging of a disk(having a flaky link), the disk addition stops and any further disk addition or removal doesn't happen on that controller. This is because, when driver receives DELAY_NOT_RESPONDING event for a disk while it is undergoing addition at the SCSI Transport layer, the driver would block the I/O to that disk resulting in a deadlock. i.e the disk addition work couldn't be completed at the SCSI Transport Layer as it can't send any I/Os (such as Inquiry, Report LUNs etc) to the disk as I/Os are blocked to this drive. Also any subsequent device removal (TARGET_NOT_RESPONDING) or link update(RC_PHY_CHANGED) event couldn't be processed as they are in the queue to get processed after disk addition event. Description of Change: Don't block the drive when drive addition is under the control of SML. So that SML won't be blocked of issuing the device dicovery commands (such as Inquiry, Report LUNs etc). Signed-off-by:
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Sreekanth Reddy authored
mpt3sas: Get IOC_FACTS information using handshake protocol only after HBA card gets into READY or Operational state. Driver initialization fails if driver tries to send IOC facts request message when the IOC is in reset or in a fault state. This patch will make sure that 1.Driver to send IOC facts request message only if HBA is in operational or ready state. 2.If IOC is in fault state, a diagnostic reset would be issued. 3.If IOC is in reset state then driver will wait for 10 seconds to exit out of reset state. If the HBA continues to be in reset state, then the HBA wouldn't be claimed by the driver. Signed-off-by:
Tomas Henzl <thenzl@redhat.com> Signed-off-by:
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Sreekanth Reddy authored
In this patch, increased the number of MSIX vector support for SAS3 C0 HBAs to up-to 96. Following are changes that are done in this patch 1. This feature is enabled only for SAS3 C0 and higher revision cards and also only when reply post free queue count is greater than 8. 2. To support this feature 12 SupplementalReplyPostHostIndex system interfaces are used. MSI-X index numbered from 0 to 7 use the first SupplementalReplyPostHostIndex system interface to update its corresponding ReplyPostHostIndex values, MSI-X index numbered from 8 to 15 will use the second SupplementalReplyPostHostIndex system interface and so on. These 12 SuppementalReplyPostHostIndex system interfaces address are saved in the array replyPostRegisterIndex[]. 3. As each SupplementalReplyPostHostIndex register supports 8 MSI-X vectors. So MSIxIndex field in these register must contain a value between 0 and 7. 4. After processing the reply descriptors from a reply post free queues then update the new reply post host index value in ReplyPostHostIndex field and (msix_index mod 8) value in MSIxIndex field of SupplementalReplyPostHostIndex register. The Address of this SupplementalReplyPostHostIndex register is retrived from (msix_index/8)th entry of replyPostRegisterIndex[] array. Signed-off-by:
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Dan Carpenter authored
We recently did some cleanup here and now the static checkers notice that there is a missing error code when ioremap() fails. Let's set it to -ENOMEM. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
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K. Y. Srinivasan authored
In the function storvsc_channel_init(), error code was not getting set correctly in some of the failure cases. Fix this issue. Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Reported-by:
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Keith Mange authored
Allow WRITE_SAME for Windows10 and above hosts. Tested-by:
Alex Ng <alexng@microsoft.com> Signed-off-by:
Keith Mange <keith.mange@microsoft.com> Signed-off-by:
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Keith Mange authored
Use storage protocol version instead of vmbus protocol version when determining storage capabilities. Tested-by:
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Keith Mange authored
Use correct defaults for values determined by protocol negotiation, instead of resetting them with every scsi controller. Tested-by:
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Keith Mange authored
Currently we are making decisions based on vmbus protocol versions that have been negotiated; use storage potocol versions instead. [jejb: fold ARRAY_SIZE conversion suggested by Johannes Thumshirn <jthumshirn@suse.de> make vmstor_protocol static] Tested-by:
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Keith Mange authored
Use a single value to track protocol versions to simplify comparisons and to be consistent with vmbus version tracking. Tested-by:
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