- 02 Jun, 2021 25 commits
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Kashyap Desai authored
Register driver for threaded interrupts. By default the driver will attempt I/O completion from interrupt context (primary handler). Since the driver tracks per reply queue outstanding I/Os, it will schedule threaded ISR if there are any outstanding I/Os expected on that particular reply queue. Threaded ISR (secondary handler) will loop for I/O completion as long as there are outstanding I/Os (speculative method using same per reply queue outstanding counter) or it has completed some X amount of commands (something like budget). Link: https://lore.kernel.org/r/20210520152545.2710479-18-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
Hannes Reinecke <hare@suse.de> Reviewed-by:
Tomas Henzl <thenzl@redhat.com> Reviewed-by:
Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by:
Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Kashyap Desai authored
The controller hardware can not handle certain UNMAP commands for NVMe drives. Add support in the driver for checking those commands and handle them appropriately. Link: https://lore.kernel.org/r/20210520152545.2710479-17-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Instead of driver returning DID_NO_CONNECT during driver unload allow SSU and Sync Cache commands to be sent to the controller to flush any cached data from the drive. Link: https://lore.kernel.org/r/20210520152545.2710479-16-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Link: https://lore.kernel.org/r/20210520152545.2710479-15-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Link: https://lore.kernel.org/r/20210520152545.2710479-14-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Cc: hare@suse.de Cc: thenzl@redhat.com Reviewed-by:
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Kashyap Desai authored
Link: https://lore.kernel.org/r/20210520152545.2710479-13-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Link: https://lore.kernel.org/r/20210520152545.2710479-12-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
This operation requests that the IOC update the TimeStamp. When the I/O Unit is powered on it sets the TimeStamp field value to 0x0000_0000_0000_0000 and increments the current value every millisecond. A host driver sets the TimeStamp field to the current time by using an IOCInit request. The TimeStamp field is periodically updated by the host driver. Link: https://lore.kernel.org/r/20210520152545.2710479-11-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Detection of firmware fault or any kind of unresponsiveness in the controller (any admin command which times out) results in resetting the controller. The primary reset mechanisms used are either soft reset or diag fault reset. A reset is performed if the host sets the ResetAction field in the HostDiagnostic register to either 001b (soft reset) or 007b (diag fault reset). After successfully resetting the controller the driver reinitializes the controller by going through start of the day initialization procedure. Pending I/Os during the reset are returned back to the SCSI midlayer for retry. Link: https://lore.kernel.org/r/20210520152545.2710479-10-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.co Reviewed-by:
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Kashyap Desai authored
Implement support for handling the following MPI events: - MPI3_EVENT_SAS_BROADCAST_PRIMITIVE - MPI3_EVENT_CABLE_MGMT - MPI3_EVENT_ENERGY_PACK_CHANGE Link: https://lore.kernel.org/r/20210520152545.2710479-9-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Implement support for the following PCIe-related MPI events: - MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST - MPI3_EVENT_PCIE_ENUMERATION Link: https://lore.kernel.org/r/20210520152545.2710479-8-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Firmware can report various MPI Events. Enable support for processing the following events related to device addition/removal to the driver: - MPI3_EVENT_DEVICE_ADDED - MPI3_EVENT_DEVICE_INFO_CHANGED - MPI3_EVENT_DEVICE_STATUS_CHANGE - MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE - MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST - MPI3_EVENT_SAS_DISCOVERY - MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR Link: https://lore.kernel.org/r/20210520152545.2710479-7-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reported-by:
kernel test robot <lkp@intel.com> Reviewed-by:
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Kashyap Desai authored
The watchdog thread is the driver's internal thread which does a few things such as detecting firmware faults, resetting the controller, performing timestamp sync, etc. Link: https://lore.kernel.org/r/20210520152545.2710479-6-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Send Port Enable Request to FW for Device Discovery. As part of port enable completion driver calls scan_start and scan_finished hooks. SCSI layer references like sdev, starget, etc. are added but actual device discovery will be supported once driver adds complete event process handling. Link: https://lore.kernel.org/r/20210520152545.2710479-5-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Cc: hare@suse.de Reviewed-by:
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Kashyap Desai authored
Create operational request and reply queue pair. The MPI3 transport interface consists of an Administrative Request Queue, an Administrative Reply Queue, and Operational Messaging Queues. The Operational Messaging Queues are the primary communication mechanism between the host and the I/O Controller (IOC). Request messages, allocated in host memory, identify I/O operations to be performed by the IOC. These operations are queued on an Operational Request Queue by the host driver. Reply descriptors track I/O operations as they complete. The IOC queues these completions in an Operational Reply Queue. To fulfil large contiguous memory requirement, driver creates multiple segments and provide the list of segments. Each segment size should be 4K which is a hardware requirement. An element array is contiguous or segmented. A contiguous element array is located in contiguous physical memory. A contiguous element array must be aligned on an element size boundary. An element's physical address within the array may be directly calculated from the base address, the Producer/Consumer index, and the element size. Expected phased identifier bit is used to find out valid entry on reply queue. Driver sets <ephase> bit and IOC inverts the value of this bit on each pass. Link: https://lore.kernel.org/r/20210520152545.2710479-4-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Reviewed-by:
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Kashyap Desai authored
Implement basic pci device driver requirements: Device probing, memory allocation, mapping system registers, allocate irq lines, etc. Source is managed in mainly three different files: - mpi3mr_fw.c: Common code which interacts with underlying fw/hw. - mpi3mr_os.c: Common code which interacts with SCSI midlayer. - mpi3mr_app.c: Common code which interacts with application/ioctl. This is currently work in progress. Link: https://lore.kernel.org/r/20210520152545.2710479-3-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Cc: bvanassche@acm.org Reviewed-by:
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Kashyap Desai authored
This adds the Kconfig and mpi30 headers. Link: https://lore.kernel.org/r/20210520152545.2710479-2-kashyap.desai@broadcom.com Cc: sathya.prakash@broadcom.com Cc: bvanassche@acm.org Cc: hch@infradead.org Reviewed-by:
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Bean Huo authored
Fix the following W=1 kernel build warning: drivers/scsi/ufs/ufshcd.c:9773: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst [mkp: upcase abbreviations] Link: https://lore.kernel.org/r/20210531163122.451375-1-huobean@gmail.comReviewed-by:
Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by:
Bean Huo <beanhuo@micron.com> Signed-off-by:
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Kees Cook authored
In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memcpy(), avoid intentionally writing across neighboring array fields. Switch from rsp_ui to resp_buf, since resp_ui isn't SSP_RESP_IU_MAX_SIZE bytes in length. This avoids future compile-time warnings. Link: https://lore.kernel.org/r/20210528181337.792268-4-keescook@chromium.orgReviewed-by:
Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Kees Cook authored
In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memcpy(), avoid intentionally writing across neighboring array fields. Remove old-style 1-byte array in favor of a flexible array[1] to avoid future false-positive cross-field memcpy() warning in: esas2r_vda.c: memcpy(vi->cmd.gsv.version_info, esas2r_vdaioctl_versions, ...) The change in struct size doesn't change other structure sizes (it is already maxed out to 256 bytes, for example here: union { struct atto_ioctl_vda_scsi_cmd scsi; struct atto_ioctl_vda_flash_cmd flash; struct atto_ioctl_vda_diag_cmd diag; struct atto_ioctl_vda_cli_cmd cli; struct atto_ioctl_vda_smp_cmd smp; struct atto_ioctl_vda_cfg_cmd cfg; struct atto_ioctl_vda_mgt_cmd mgt; struct atto_ioctl_vda_gsv_cmd gsv; u8 cmd_info[256]; } cmd; No sizes are calculated using the enclosing structure, so no other updates are needed. Link: https://lore.kernel.org/r/20210528181337.792268-3-keescook@chromium.orgReviewed-by: -
Randy Dunlap authored
The BusLogic driver has build errors on ia64 due to a name collision (in the #included FlashPoint.c file). Rename the struct field in struct sccb_mgr_info from si_flags to si_mflags (manager flags) to mend the build. This is the first problem. There are 50+ others after this one: In file included from ../include/uapi/linux/signal.h:6, from ../include/linux/signal_types.h:10, from ../include/linux/sched.h:29, from ../include/linux/hardirq.h:9, from ../include/linux/interrupt.h:11, from ../drivers/scsi/BusLogic.c:27: ../arch/ia64/include/uapi/asm/siginfo.h:15:27: error: expected ':', ',', ';', '}' or '__attribute__' before '.' token 15 | #define si_flags _sifields._sigfault._flags | ^ ../drivers/scsi/FlashPoint.c:43:6: note: in expansion of macro 'si_flags' 43 | u16 si_flags; | ^~~~~~~~ In file included from ../drivers/scsi/BusLogic.c:51: ../drivers/scsi/FlashPoint.c: In function 'FlashPoint_ProbeHostAdapter': ../drivers/scsi/FlashPoint.c:1076:11: error: 'struct sccb_mgr_info' has no member named '_sifields' 1076 | pCardInfo->si_flags = 0x0000; | ^~ ../drivers/scsi/FlashPoint.c:1079:12: error: 'struct sccb_mgr_info' has no member named '_sifields' Link: https://lore.kernel.org/r/20210529234857.6870-1-rdunlap@infradead.org Fixes: 391e2f25 ("[SCSI] BusLogic: Port driver to 64-bit.") Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Hannes Reinecke <hare@suse.de> Cc: Khalid Aziz <khalid.aziz@oracle.com> Cc: Khalid Aziz <khalid@gonehiking.org> Reported-by:Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple of warnings by explicitly adding break statements instead of just letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115 Link: https://lore.kernel.org/r/20210528200828.GA39349@embeddedorReviewed-by:
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Daniel Wagner authored
Pass in fcport->vha to ql_log() in order to add the PCI address to the log. Currently NULL is passed in which gives this confusing log entry: > qla2xxx [0000:00:00.0]-2112: : qla_nvme_unregister_remote_port: unregister remoteport on 0000000009d6a2e9 50000973981648c7 Link: https://lore.kernel.org/r/20210531122444.116655-1-dwagner@suse.deReviewed-by:
Daniel Wagner <dwagner@suse.de> Signed-off-by:
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Alice.Chao authored
MediaTek ufshci needs to be disabled before HW reset to avoid potential issues. Link: https://lore.kernel.org/r/20210528033624.12170-3-alice.chao@mediatek.comReviewed-by:
Stanley Chu <stanley.chu@mediatek.com> Signed-off-by:
Alice.Chao <alice.chao@mediatek.com> Signed-off-by:
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Alice.Chao authored
Export ufshcd_hba_stop() to allow vendors to disable HCI in variant ops. Link: https://lore.kernel.org/r/20210528033624.12170-2-alice.chao@mediatek.comReviewed-by:
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- 01 Jun, 2021 4 commits
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Bart Van Assche authored
From ufshcd_transfer_req_compl(): Resetting interrupt aggregation counters first and reading the DOOR_BELL afterward allows us to handle all the completed requests. In order to prevent other interrupts starvation the DB is read once after reset. The down side of this solution is the possibility of false interrupt if device completes another request after resetting aggregation and before reading the DB. Prevent that ufshcd_intr() reports a false positive "Unhandled interrupt" message if the above scenario is triggered. Link: https://lore.kernel.org/r/20210519202058.12634-2-bvanassche@acm.org Cc: Stanley Chu <stanley.chu@mediatek.com> Cc: Can Guo <cang@codeaurora.org> Cc: Bean Huo <beanhuo@micron.com> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Cc: Asutosh Das <asutoshd@codeaurora.org> Suggested-by:Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
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Suganath Prabu S authored
If a firmware fault occurs while scanning the devices during IOC initialization then the driver issues the hard reset operation to recover the IOC. However, the driver is not issuing a Port enable request message as part of hard reset operation during IOC initialization. Due to this, the driver will not receive get any device discovery-related events and hence devices will not be accessible. Teach the driver to gracefully handle firmware faults while scanning for target devices during IOC initialization. Make the driver issue a port enable request message as part of hard reset operation. This permits receiving device discovery-related events from the firmware after the hard reset operation completes. Link: https://lore.kernel.org/r/20210518051625.1596742-4-suganath-prabu.subramani@broadcom.comSigned-off-by:
Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Signed-off-by:
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Suganath Prabu S authored
During first half of IOC initialization (i.e. before going for device scanning), if any firmware fault occurs then driver is aborting the IOC initialization operation. Modify the driver to issue a diag reset operation to recover IOC from fault state and reinitialize the IOC. Link: https://lore.kernel.org/r/20210518051625.1596742-3-suganath-prabu.subramani@broadcom.comSigned-off-by:
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Suganath Prabu S authored
Do not cancel current running firmware event work if the event type is different from MPT3SAS_REMOVE_UNRESPONDING_DEVICES. Otherwise a deadlock can be observed while cancelling the current firmware event work if a hard reset operation is called as part of processing the current event. Link: https://lore.kernel.org/r/20210518051625.1596742-2-suganath-prabu.subramani@broadcom.comSigned-off-by:
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- 22 May, 2021 11 commits
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John Garry authored
The sysfs handling function sdev_store_queue_depth() enforces that the sdev queue depth cannot exceed shost can_queue. The initial sdev queue depth comes from shost cmd_per_lun. However, the LLDD may manually set cmd_per_lun to be larger than can_queue, which leads to an initial sdev queue depth greater than can_queue. Such an issue was reported in [0], which caused a hang. That has since been fixed in commit fc09acb7 ("scsi: scsi_debug: Fix cmd_per_lun, set to max_queue"). Stop this possibly happening for other drivers by capping shost cmd_per_lun at shost can_queue. [0] https://lore.kernel.org/linux-scsi/YHaez6iN2HHYxYOh@T590/ Link: https://lore.kernel.org/r/1621434662-173079-1-git-send-email-john.garry@huawei.comReviewed-by:
Ming Lei <ming.lei@redhat.com> Reviewed-by:
John Garry <john.garry@huawei.com> Signed-off-by:
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James Smart authored
Update lpfc version to 12.8.0.10 Link: https://lore.kernel.org/r/20210514195559.119853-12-jsmart2021@gmail.comCo-developed-by:
Justin Tee <justin.tee@broadcom.com> Signed-off-by:
James Smart <jsmart2021@gmail.com> Signed-off-by:
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James Smart authored
FC-LS-5 specifies that a received RDF implies a possible change to fabric supported diagnostic functions. Endpoints are to re-perform the RDF exchange with the fabric to enable possible new features or adapt to changes in values. This patch adds the logic to RDF receive to re-perform the RDF exchange with the switch. Link: https://lore.kernel.org/r/20210514195559.119853-11-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
Default behavior for the driver, when aborting an I/O, is to terminate the I/O with the adapter. The adapter will initiate an ABTS to terminate the exchange on the link and mark the exchange is terminated so that no further use of the sgl or any traffic for the exchange is worked on. Completion on the Abort is then posted to the driver, which as the I/O is terminated can complete the I/O to the OS. This completion may occur prior to the ABTS handshake completing on the wire. The ABTS handshake can take a long time to complete with timeouts and retries reaching 60+ seconds. Note: if retries fail, LOGO occurs. Some devices want to ensure that the ABTS handshake fully completes (this device has fully ack'd it) before the I/O completion is posted back to the OS, where a failed I/O may be retried via a different path. To support this behavior, an option was added to the driver to change I/O completion from the Abort cmd completion to the Exchange termination (aka ABTS) completion. Link: https://lore.kernel.org/r/20210514195559.119853-10-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
The driver is encountering a crash in lpfc_free_iocb_list() while performing initial attachment. Code review found this to be an errant failure path that was taken, jumping to a tag that then referenced structures that were uninitialized. Fix the failure path. Link: https://lore.kernel.org/r/20210514195559.119853-9-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
When a link bounce happens, there is a possibility that responses to requests posted prior to the link bounce could be received. This is problematic as the counter to track reglogin completion after link up can become out of sync with the real state. As there is no reason to process a request made in a prior link up context, eliminate all the disturbance by tagging the request with the event_tag maintained by the SLI Port for the link. The event_tag will change on every link state transition. As long as the tag matches the current event_tag, the response can be processed. If it doesn't match, just discard the response. Link: https://lore.kernel.org/r/20210514195559.119853-8-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
During link bounce testing, RPI counts were seen to differ from the number of nodes. For fabric and domain controllers, a temporary RPI is assigned, but the code isn't registering it. If the nodes do go away, such as on link down, the temporary RPI isn't being released. Change the way these two fabric services are managed, make them behave like any other remote port. Register the RPI and register with the transport. Never leave the nodes in a NPR or UNUSED state where their RPI is in limbo. This allows them to follow normal dev_loss_tmo handling, RPI refcounting, and normal removal rules. It also allows fabric I/Os to use the RPI for traffic requests. Note: There is some logic that still has a couple of exceptions when the Domain controller (0xfffcXX). There are cases where the fabric won't have a valid login but will send RDP. Other times, it will it send a LOGO then an RDP. It makes for ad-hoc behavior to manage the node. Exceptions are documented in the code. Link: https://lore.kernel.org/r/20210514195559.119853-7-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
When lpfc is handling a solicited and unsolicited PLOGI with another initiator, the remote initiator is never recovered. The node for the initiator is erroneouosly removed and all resources released. In lpfc_cmpl_els_plogi(), when lpfc_els_retry() returns a failure code, the driver is calling the state machine with a device remove event because the remote port is not currently registered with the SCSI or NVMe transports. The issue is that on a PLOGI "collision" the driver correctly aborts the solicited PLOGI and allows the unsolicited PLOGI to complete the process, but this process is interrupted with a device_rm event. Introduce logic in the PLOGI completion to capture the PLOGI collision event and jump out of the routine. This will avoid removal of the node. If there is no collision, the normal node removal will occur. Fixes: 52edb2ca ("scsi: lpfc: Remove ndlp when a PLOGI/ADISC/PRLI/REG_RPI ultimately fails") Cc: <stable@vger.kernel.org> # v5.11+ Link: https://lore.kernel.org/r/20210514195559.119853-6-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
The driver is crashing due to a bad pointer during driver load due in an adisc acc receive routine. The driver is missing node get/put in the mbx_resume_rpi paths. Fix by adding the proper gets and puts into the resume_rpi path. Link: https://lore.kernel.org/r/20210514195559.119853-5-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
An 'unexpected timeout' message may be seen in a point-2-point topology. The message occurs when a PLOGI is received before the driver is notified of FLOGI completion. The FLOGI completion failure causes discovery to be triggered for a second time. The discovery timer is restarted but no new discovery activity is initiated, thus the timeout message eventually appears. In point-2-point, when discovery has progressed before the FLOGI completion is processed, it is not a failure. Add code to FLOGI completion to detect that discovery has progressed and exit the FLOGI handling (noop'ing it). Link: https://lore.kernel.org/r/20210514195559.119853-4-jsmart2021@gmail.comCo-developed-by:
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James Smart authored
When processing an NVMe ERSP IU which didn't match the optimized CQE-only path, the status was being left to the WQE status. WQE status is non-zero as it is indicating a non-optimized completion that needs to be handled by the driver. Fix by clearing the status field when falling into the non-optimized case. Log message added to track optimized vs non-optimized debug. Link: https://lore.kernel.org/r/20210514195559.119853-3-jsmart2021@gmail.comCo-developed-by:
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