summaryrefslogtreecommitdiff
path: root/drivers
AgeCommit message (Collapse)AuthorFilesLines
2016-02-24scsi: acornscsi: mark calc_sync_xfer as __maybe_unusedArnd Bergmann1-1/+2
The calc_sync_xfer function is only used if CONFIG_SCSI_ACORNSCSI_SYNC is set, otherwise we get a compiler warning: scsi/arm/acornscsi.c:680:15: warning: 'calc_sync_xfer' defined but not used [-Wunused-function] unsigned char calc_sync_xfer(unsigned int period, unsigned int offset) This marks the function as __maybe_unused to shut up the warning and silently drop the function in the object code when there is no caller. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mptfusion: hide unused seq_mpt_print_ioc_summary functionArnd Bergmann1-0/+2
The seq_mpt_print_ioc_summary function is used for the /proc/mpt/iocN/summary implementation and never gets called when CONFIG_PROC_FS is disabled: drivers/message/fusion/mptbase.c:6851:13: warning: 'seq_mpt_print_ioc_summary' defined but not used [-Wunused-function] static void seq_mpt_print_ioc_summary(MPT_ADAPTER *ioc, struct seq_file *m, int showlan) This adds an #ifdef to hide the function definition in that case and avoid the warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24scsi: fdomain: drop fdomain_pci_tbl when built-inArnd Bergmann1-1/+1
The fdomain SCSI host driver is one of the last remaining drivers that manually search the PCI bus using pci_get_device rather than registering a pci_driver instance. This means the module device table is unused when the driver is built-in, and we get a warning about it: drivers/scsi/fdomain.c:1773:29: warning: 'fdomain_pci_tbl' defined but not used [-Wunused-variable] To avoid the warning, this adds another #ifdef around the table definition. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24megaraid_sas: Add an i/o barrierTomas Henzl2-0/+2
A barrier should be added to ensure proper ordering of memory mapped writes. Signed-off-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Kashyap Desai <kashyap.desai@broadcom.com> Acked-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24lpfc: Remove redundant code block in lpfc_scsi_cmd_iocb_cmplJohannes Thumshirn1-17/+0
This removes a redundant code block that will either be executed if the ENABLE_FCP_RING_POLLING flag is set in phba->cfg_poll or not. The code is just duplicated in both cases, hence we unify it again. This probably is a left over from some sort of refactoring. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Sebastian Herbszt <herbszt@gmx.de> Acked-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Updating mpt3sas driver version to 12.100.00.00Suganath prabu Subramani1-3/+3
Bump mpt3sas driver version from 09.102.00.00 to 12.100.00.00 Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Fix for Asynchronous completion of timedout IO and task abort of ↵Suganath prabu Subramani4-14/+25
timedout IO. Track msix of each IO and use the same msix for issuing abort to timed out IO. With this driver will process IO's reply first followed by TM. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Updated MPI Header to 2.00.42Suganath prabu Subramani5-8/+14
Updated MPI version and MPI header files. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Add support for configurable Chain Frame SizeSuganath prabu Subramani2-6/+29
Added support for configurable Chain Frame Size. Calculate the Chain Message Frame size from the IOCMaxChainSegementSize (iocfacts). Applicable only for mpt3sas/SAS3.0 HBA's. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Added smp_affinity_enable module parameter.Suganath Prabu Subramani1-11/+26
Module parameter to enable/disable configuring affinity hint for msix vector. SMP affinity feature can be enabled/disabled by setting module parameter "smp_affinity_enable" to 1/0. By default this feature is enabled. (smp_affinity_enable = 1 enabled). Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Make use of additional HighPriority credit message frames for ↵Suganath prabu Subramani3-16/+228
sending SCSI IO's Driver assumes HighPriority credit as part of Global credit. But, Firmware treats HighPriority credit value and global cedits as two different values. Changed host queue algorithm to treat global credits and highPriority credits as two different values. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Never block the Enclosure deviceSuganath prabu Subramani2-1/+22
Never block the SEP device (i.e. Never invoke the scsi_internal_device_block() API for SEP device) even for the delay not responding events. Blocking the SEP device will create a deadlock while adding any device to the OS. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Fix static analyzer(coverity) tool identified defectsSuganath prabu Subramani3-4/+5
1.Wrong size of argument is being passed The size of struct being passed as an argument to memset func and area of memory being pointed by an instance of struct in memset func should be of same structure type. 2.Dereference null return value 3.Array compared against '0' Check whether value pointed by particular index of an array is null or not in "if" statement. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Used IEEE SGL instead of MPI SGL while framing a SMP Passthrough ↵Suganath prabu Subramani1-19/+4
request message. As driver was using MPI SGL while framing the SMP Passthrough request message due to which firmware unable to post the Reply Data in the host memory and timeout is observed for this SMP Passthrough request message and so unable to perform phy disable operation. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24mpt3sas: Added support for high port count HBA variants.Suganath prabu Subramani11-59/+423
Updated hardware description headers with MPI v2.6 and mpt3sas_pci_table[] with vendor_ids, device_ids of Cutlass and Intruder HBA which have support for 4 ports. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24st: Fix MTMKPART to work with newer drivesKai Makisara1-11/+111
Change the MTMKPART operation of the MTIOCTOP ioctl so that it works also with current drives (LTO-5/6, etc.). Send a separate FORMAT MEDIUM command if the partition mode page indicates that this is required. Use LOAD to position the tape at the beginning of tape. The operation is extended so that if the argument is negative, its absolute value specifies the size of partition 0, which is the physically first partition of the tape. Signed-off-by: Kai Mäkisara <kai.makisara@kolumbus.fi> Tested-by: Shane M Seymour <shane.seymour@hpe.com> Tested-by: Laurence Oberman <loberman@redhat.com> Tested-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24megaraid_sas: Fix SMAP issueSumit Saxena1-7/+6
Inside compat IOCTL hook of driver, driver was using wrong address of ioc->frame.raw which leads sense_ioc_ptr to be calculated wrongly and failing IOCTL. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24megaraid_sas: Fix for IO failing post OCR in SRIOV environmentSumit Saxena3-22/+39
Driver assumes that VFs always have peers present whenever they have same LD IDs. But this is not the case. This patch handles the above mentioned by explicitly checking for a peer before making HA/non-HA path decision. Signed-off-by: Uday Lingala <uday.lingala@avagotech.com> Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24hisi_sas: update driver version to 1.2John Garry1-1/+1
Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24hisi_sas: add v1 hw ACPI supportJohn Garry1-24/+43
Add support in v1 hw driver for ACPI. A check on whether an ACPI handle is available for the device is used to decide on whether to use ACPI reset handler or syscon for hw reset. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24hisi_sas: use Unified Device Properties APIJohn Garry2-20/+23
The hisi_sas driver is required to support both device tree and ACPI. The scanning of the device properties now uses the Unified Device Properties API, which serves both OF and ACPI. Since syscon is not supported by ACPI, syscon is only used in the driver when device tree is used. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Add lock to protect WRB alloc and freeJitendra Bhivare2-0/+6
FW got into UE after running IO stress test With kernel change to split session lock in frwd_lock and back_lock for tx and rx path correspondingly, in the IO path, common resource used in driver such as WRB was left unprotected. Add wrb_lock spinlock to protect allocation and freeing of WRB. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: _bh for io_sgl_lock and mgmt_sgl_lockJitendra Bhivare1-15/+10
Processing of mgmt and IO tasks are done in process context and softirqs. Allocation and freeing of sgl_handles needs to be done under spin_lock_bh/spin_unlock_bh and move the locks to the routines. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Fix ExpStatSn in management tasksJitendra Bhivare1-8/+4
Connection resets observed from some targets when NOP-Out with wrong ExpStatSn is sent. FW keeps track of StatSn and fills up ExpStatSn accordingly. The header filled up by the stack needs to be modified by driver to clear ExpStatSn. If the field is not cleared, FW recalculates ExpStatSn and wrong offset'ed ExpStatSn is seen in the wire trace. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Couple MCC tag and WRB alloc and freeJitendra Bhivare5-118/+130
WARN_ON(atomic_read(&mccq->used) >= mccq->len) seen when FW gets into UE. MCCQ overflow is happening because driver discards any new request and frees up the tag. The tag allocation controls the number of MCC WRB posted. It is being replenished but WRBs are not hence the WARN_ON. Allocation and freeing of WRB and tags for MCC is now done in one place. This helps to achieve proper accounting of WRB indices and MCC tags. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Fix MCC WRB leak in open_connectionJitendra Bhivare1-9/+9
In open with IP of unknown address family, only tag is freed and error returned. MCC WRB allocated for the operation is not freed. Added check for supported family of IP in the beginning before allocating the tag and WRB. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Cleanup processing of BMBX completionJitendra Bhivare1-39/+36
Remove confusingly named be_mcc_compl_is_new and be_mcc_compl_use functions in processing of BMBX. Rearrange beiscsi_process_mbox_compl function. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Fix be_mcc_compl_poll to use tag_stateJitendra Bhivare1-45/+47
be_mcc_compl_poll waits till 'used' count of MCC WRBQ is zero. This is to determine the completion of an MCC sent. Change function to poll for the tag of MCC sent, instead, and wait till its tag_state is cleared. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Remove be_mbox_notify_wait functionJitendra Bhivare1-75/+4
be_mbox_notify_wait does exactly same thing as be_mbox_notify. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Rename MCC and BMBX processing functionsJitendra Bhivare5-36/+36
beiscsi_mccq_compl -> beiscsi_mccq_compl_wait - indicate blocking call. be_mcc_wait_compl -> be_mcc_compl_poll - indicate polling for completion. be_mbox_db_ready_wait -> be_mbox_db_ready_poll - indicate polling for RDY. be_mcc_compl_process -> beiscsi_process_mbox_compl - indicate BMBX compl. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Remove redundant MCC processing codeJitendra Bhivare5-116/+68
be_mcc_compl_process_isr is removed. MCC CQ processing is done only in beiscsi_process_mcc_cq and MCC CQE processing is done only in beiscsi_process_mcc_compl. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Use macros for MCC WRB and CQE fieldsJitendra Bhivare4-31/+41
Rename mcc_numtag to mcc_tag_status. MCC CQE status is processed using macros already defined in be_cmds.h. Add MCC_Q_WRB_ and MCC_Q_CMD_TAG_MASK macros to map to already defined CQE_STATUS_ macros to be consistent when posting MCC. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24be2iscsi: Remove unused mcc_cq_lockJitendra Bhivare3-4/+0
mcc_cq_lock spin_lock is used only in beiscsi_process_mcc which is called only when all interrupts are disabled from mgmt_epfw_cleanup during unloading of driver. There is no other context where there can be contention for the processing of CQ. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24bfa: use strncpy() instead of memcpy()Dan Carpenter1-1/+1
BFA_MFG_NAME is "QLogic" which is only 7 bytes, but we are copying 8 bytes. It's harmless because the badding byte is likely zero but it makes static checkers complain. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Anil Gurumurthy <anil.gurumurthy@qlogic.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24megaraid: fix null pointer check in megasas_detach_one().Maurizio Lombardi1-5/+5
The pd_seq_sync pointer can't be NULL, we have to check its entries instead. Signed-off-by: Maurizio Lombardi <mlombard@redhat.com> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Update driver versionRaghava Aditya Renukunta1-1/+1
Updated diver version to 41052 Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Fix character device re-initializationRaghava Aditya Renukunta2-7/+21
During EEH PCI hotplug activity kernel unloads and loads the driver, causing character device to be unregistered(aac_remove_one).When the driver is loaded back using aac_probe_one the character device needs to be registered again for the AIF management tools to work. Fixed by adding code to register character device in aac_probe_one if it is unregistered in aac_remove_one. Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com> Reviewed-by: Shane Seymour <shane.seymour@hpe.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Fix AIF triggered IOP_RESETRaghava Aditya Renukunta3-4/+12
while driver removal is in progress or PCI shutdown is invoked, driver kills AIF aacraid thread, but IOCTL requests from the management tools re-start AIF thread leading to IOP_RESET. Fixed by setting adapter_shutdown flag when PCI shutdown is invoked. Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com> Reviewed-by: Shane Seymour <shane.seymour@hpe.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Created new mutex for ioctl pathRaghava Aditya Renukunta3-10/+12
aac_mutex was used to create protect the ioctl path for only the compat path, it would be make more sense to place mutex in aac_do_ioctl, which is the main ioctl function call that handles all ioctl commands. Created new mutex ioctl_mutex in struct aac_dev to protect switch case in aac_do_ioctl and removed aac_mutex from aac_cfg_ioctl and aac_compat_do_ioctl Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Fundamental reset support for Series 7Raghava Aditya Renukunta1-0/+6
Series 7 does not support PCI hot reset used by EEH. Enabled fundamental reset only for Series 7 Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Set correct msix count for EEH recoveryRaghava Aditya Renukunta1-1/+11
During EEH recovery number of online CPU's might change thereby changing the number of MSIx vectors. Since each fib is allocated to a vector, changes in the number of vectors causes fib to be sent thru invalid vectors.In addition the correct number of MSIx vectors is not updated in the INIT struct sent to the controller, when it is reinitialized. Fixed by reassigning vectors to fibs based on the updated number of MSIx vectors and updating the INIT structure before sending to controller. Fixes: MSI-X vector calculation for suspend/resume Cc: stable@vger.kernel.org Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com> Reviewed-by: Shane Seymour <shane.seymour@hpe.com> Reviewed-by: Johannes Thumshirn <jthushirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Fix memory leak in aac_fib_map_freeRaghava Aditya Renukunta1-3/+6
aac_fib_map_free() calls pci_free_consistent() without checking that dev->hw_fib_va is not NULL and dev->max_fib_size is not zero.If they are indeed NULL/0, this will result in a hang as pci_free_consistent() will attempt to invalidate cache for the entire 64-bit address space (which would take a very long time). Fixed by adding a check to make sure that dev->hw_fib_va and dev->max_fib_size are not NULL and 0 respectively. Fixes: 9ad5204d6 - "[SCSI]aacraid: incorrect dma mapping mask during blinked recover or user initiated reset" Cc: stable@vger.kernel.org Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Added EEH supportRaghava Aditya Renukunta2-1/+140
Added support for PCI EEH (extended error handling). Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: Fix RRQ overloadRaghava Aditya Renukunta3-23/+37
The driver utilizes an array of atomic variables to keep track of IO submissions to each vector. To submit an IO multiple threads iterate through the array to find a vector which has empty slots to send an IO. The reading and updating of the variable is not atomic, causing race conditions when a thread uses a full vector to submit an IO. Fixed by mapping each FIB to a vector, the submission path then uses said vector to submit IO thereby removing the possibly of a race condition.The vector assignment is started from 1 since vector 0 is reserved for the use of AIF management FIBS.If the number of MSIx vectors is 1 (MSI or INTx mode) then all the fibs are allocated to vector 0. Fixes: 495c0217 "aacraid: MSI-x support" Cc: stable@vger.kernel.org # v4.1 Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24aacraid: SCSI blk tag supportRaghava Aditya Renukunta5-20/+44
The method to allocate and free FIB's in the present code utilizes spinlocks. Multiple IO's have to wait on the spinlock to acquire or free fibs creating a performance bottleneck. An alternative solution would be to use block layer tags to keep track of the fibs allocated and freed. To this end aac_fib_alloc_tag was created to utilize the blk layer tags to plug into the Fib pool.These functions are used exclusively in the IO path. 8 fibs are reserved for the use of AIF management software and utilize the previous spinlock based implementations. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@pmcs.com> Reviewed-by: Shane Seymour <shane.seymour@hpe.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24hisi_sas: update driver version to 1.1John Garry1-1/+1
Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24hisi_sas: add v2 tmf functionsJohn Garry1-0/+23
Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24hisi_sas: add v2 slot error handlerJohn Garry1-0/+421
Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24hisi_sas: add v2 path to send ATA commandJohn Garry3-0/+174
Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-24hisi_sas: add v2 code for itct setup and freeJohn Garry1-0/+92
Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>