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* scsi: megaraid_sas: fix selection of reply queueMing Lei2018-03-141-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 84676c1f21e8 ("genirq/affinity: assign vectors to all possible CPUs") we could end up with an MSI-X vector that did not have any online CPUs mapped. This would lead to I/O hangs since there was no CPU to receive the completion. Retrieve IRQ affinity information using pci_irq_get_affinity() and use this mapping to choose a reply queue. [mkp: tweaked commit desc] Cc: Hannes Reinecke <hare@suse.de> Cc: "Martin K. Petersen" <martin.petersen@oracle.com>, Cc: James Bottomley <james.bottomley@hansenpartnership.com>, Cc: Christoph Hellwig <hch@lst.de>, Cc: Don Brace <don.brace@microsemi.com> Cc: Kashyap Desai <kashyap.desai@broadcom.com> Cc: Laurence Oberman <loberman@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: Meelis Roos <mroos@linux.ee> Cc: Artem Bityutskiy <artem.bityutskiy@intel.com> Fixes: 84676c1f21e8 ("genirq/affinity: assign vectors to all possible CPUs") Signed-off-by: Ming Lei <ming.lei@redhat.com> Acked-by: Kashyap Desai <kashyap.desai@broadcom.com> Tested-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Artem Bityutskiy <artem.bityutskiy@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: NVMe passthrough command supportShivasharan S2018-01-221-4/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NVMe passthrough via MFI interface. Current MegaRAID product supports different types of encapsulation via the MFI framework. NVMe native command should be framed by application and it should be embedded in MFI as payload. The driver will provide interface to send the MFI frame along with the payload (in this case, payload is NVMe native command) to the firmware. Driver already has an existing, similar interface for SATA and SMP passthrough. 1. Driver will pass MFI command to the firmware if the latter supports NVMe encapsulated processing (not all SAS3.5 firmware supports this feature). 2. Driver exposes sysfs entry support_nvme_encapsulation. This is required for backward compatibility for applications using earlier driver versions that did not process IOCTL frames and could result in host hang. This is already fixed as part of commit 82add4e1b354 ("scsi: megaraid_sas: Incorrect processing of IOCTL frames for SMP/STP commands") [mkp: clarified commit message] Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: driver version upgradeShivasharan S2018-01-101-2/+2
| | | | | Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Update LD map after populating drv_map driver map copyShivasharan S2018-01-101-1/+1
| | | | | | | | | | | | | Issue – There may be some IO accessing incorrect raid map, but driver has checks in IO path to handle those cases. It is always better to move to new raid map only once raid map is populated and validated. No functional defect. Fix is provided as part of review. Fix – Update instance->map_id after driver has populated new driver raid map from firmware raid map. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Avoid firing DCMDs while OCR is in progressShivasharan S2018-01-101-1/+0
| | | | | | | | | | | | | | Driver needs to avoid PCI writes while OCR is in progress. Use reset_mutex to synchronize between firing DCMDs MR_DCMD_PD_GET_INFO and MR_DCMD_DRV_GET_TARGET_PROP while OCR is triggered. Without this fix, if Device/VD add/creation is in progress and at the same time MR Firmware is going through OCR, user may see OCR never completed and it may need system reboot. This scenario is rare to occur. Fix is provided as part of review. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: driver version upgradeShivasharan S2017-10-251-2/+2
| | | | | Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Add support for 64bit consistent DMAShivasharan S2017-10-251-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The latest MegaRAID Firmware (for Invader series) has support for 64bit DMA for both streaming and consistent DMA buffers. All Ventura series controller FW always support 64 bit consistent DMA. Also, on a few architectures 32bit DMA is not supported. Current driver always prefers 32bit for consistent DMA and 64bit for streaming DMA. This behavior was unintentional and carried forwarded from legacy controller FW. Need to enhance the driver to support 64bit consistent DMA buffers based on the firmware capability. Below is the DMA setting strategy in driver with this patch. For Ventura series, always try to set 64bit DMA mask. If it fails fall back to 32bit DMA mask. For Invader series and earlier generation controllers, first try to set to 32bit consistent DMA mask irrespective of FW capability. This is needed to ensure firmware downgrades do not break. If 32bit DMA setting fails, check FW capability and try seting to 64bit DMA mask. There are certain restrictions in the hardware for having all sense buffers and all reply descriptors to be in the same 4GB memory region. This limitation is h/w dependent and can not be changed in firmware. This limitation needs to be taken care in driver while allocating the buffers. There was a discussion regarding this - find details at below link. https://www.spinics.net/lists/linux-scsi/msg108251.html Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Incorrect processing of IOCTL frames for SMP/STP commandsShivasharan S2017-10-251-10/+13
| | | | | | | | | | | | cmd->frame->dcmd.opcode will be valid only for MFI_CMD_DCMD IOCTL frames. Currently driver check for cmd->frame->dcmd.opcode without checking cmd type. Ensure we check dcmd opcode only for MFI_CMD_DCMD commands. Separate handling of MFI_CMD_SMP/STP commands from MFI_CMD_DCMD in completion path. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: remove instance->ctrl_infoShivasharan S2017-10-251-1/+0
| | | | | | | | Re-use the pre-allocated ctrl_info DMA buffer. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Pre-allocate frequently used DMA buffersShivasharan S2017-10-251-0/+13
| | | | | | | | Pre-allocate few of the frequently used DMA buffers during load time. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: reduce size of fusion_context and use kmalloc for allocationShivasharan S2017-10-251-1/+0
| | | | | | | | | | | | | | | | | fusion_context structure is very large around 180kB and most of the size is contributed by log_to_span array. Move log_to_span out of fusion context and have separate allocation for log_to_span. And use kmalloc to allocate fusion_context. Currently kmemleak reports 1000s of false positives for fusion->cmd_list[]. kmemleak does not track page allocation for fusion_context. This change will also fix the false positives reported by kmemleak. Ref: https://marc.info/?l=linux-scsi&m=150545293900917 Reported-by: Shu Wang <shuwang@redhat.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: replace is_ventura with adapter_type checksShivasharan S2017-10-251-1/+0
| | | | | | | | No functional change. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Add support for Crusader controllersShivasharan S2017-10-251-0/+1
| | | | | | | | | | Add support for PCI VID/DID 0x1000/0x0015 based MegaRAID controllers. Since the DID 0x0015 conflicts with DELL PERC5 controllers, add vendor ID based check specific for DELL PERC5. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: use adapter_type for all gen controllersShivasharan S2017-10-251-0/+8
| | | | | | | | | | No functional change. Refactor adapter_type to set for all generation controllers, not just for fusion controllers. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: driver version upgradeShivasharan S2017-08-241-2/+2
| | | | | | | Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: use vmalloc for crash dump buffers and driver's local ↵Shivasharan S2017-08-241-1/+0
| | | | | | | | | | | | | | RAID map Driver's local RAID map is accessed frequently. We will first try to get memory from __get_free_pages. If this fails, fall back to using vmalloc. For crash dump buffers always prefer vmalloc. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Driver version upgradeShivasharan S2017-03-131-2/+2
| | | | | | | Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: driver version upgradeShivasharan S2017-02-131-2/+2
| | | | | | | | Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Indentation and smatch warning fixesShivasharan S2017-02-131-1/+1
| | | | | | | | | | | | | | Fix indentation issues and smatch warning reported by Dan Carpenter for previous series as discussed below. http://www.spinics.net/lists/linux-scsi/msg103635.html http://www.spinics.net/lists/linux-scsi/msg103603.html Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Cleanup VD_EXT_DEBUG and SPAN_DEBUG related debug printsShivasharan S2017-02-131-2/+0
| | | | | | | | Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Increase internal command poolShivasharan S2017-02-131-1/+1
| | | | | | | | | | Fix - increase internal command pool to 8. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: megasas_return_cmd does not memset IO frame to zeroShivasharan S2017-02-131-0/+1
| | | | | | | | | | Memset the IO frame to zero after release. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: MR_TargetIdToLdGet u8 to u16 and avoid invalid raid-map ↵Shivasharan S2017-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | access Change MR_TargetIdToLdGet return type from u8 to u16. ld id range check is added at two places in this patch - @megasas_build_ldio_fusion and @megasas_build_ld_nonrw_fusion. Previous driver code used different data type for lds TargetId returned from MR_TargetIdToLdGet. Prior to this change, above two functions was safeguarded due to function always return u8 and maximum value of ld id returned was 255. In below check, fw_supported_vd_count as of today is 64 or 256 and valid range to support is either 0-63 or 0-255. Ideally want to filter accessing raid map for ld ids which are not valid. With the u16 change, invalid ld id value is 0xFFFF and we will see kernel panic due to random memory access in MR_LdRaidGet. The changes will ensure we do not call MR_LdRaidGet if ld id is beyond size of ldSpanMap array. if (ld < instance->fw_supported_vd_count) >From firmware perspective,ld id 0xFF is invalid and even though current driver code forward such command, firmware fails with target not available. ld target id issue occurs mainly whenever driver loops to populate raid map (ea. MR_ValidateMapInfo). These are the only two places where we may see out of range target ids and wants to protect raid map access based on range provided by Firmware API. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: reduce size of fusion_context and use vmalloc if kmalloc ↵Shivasharan S2017-02-131-0/+2
| | | | | | | | | | | | | | | fails Currently fusion context has fixed array load_balance_info. Use dynamic allocation. In few places, driver do not want physically contigious memory. Attempt to use vmalloc if physical contiguous memory is not available. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: enhance debug logs in OCR contextShivasharan S2017-02-131-0/+3
| | | | | | | | | | | Add additional logging from driver in OCR context. Add debug logs for partial completion of IOs is iodone context. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: raid 1 write performance for large ioShivasharan S2017-02-131-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid Host side PCI bandwidth bottleneck and hint FW to do Write buffering using RaidFlag MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT. Once IO is landed in FW with MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT, it will do single DMA from host and buffer the Write operation. On back end, FW will DMA same buffer to the Mirror and Data Arm. This will improve large block IO performance which bottleneck due to Host side PCI bandwidth limitation. Consistent ~4000MB T.P for 256K Block size is expected performance numbers. IOPS for small Block size should be on par with Disk performance. (E.g 42 SAS Disk in JBOD mode gives 3700MB T.P. Same Drive used in R1 WT mode, should give ~1800MB T.P) Using this patch 24 R1 VDs (HDD) gives below performance for Sequential Write. Without this patch, we cannot reach above 3200MB (Throughput is in MB.) Block Size 50% 256K and 50% 4K 100% 256K 4K 3100 2030 8K 3140 2740 16K 3140 3140 32K 3400 3240 64K 3500 3700 128K 3870 3870 256K 3920 3920 Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: NVME fast path io supportShivasharan S2017-02-131-1/+9
| | | | | | | | | | | | This patch provide true fast path IO support. Driver creates PRP for NVME drives and send Fast Path for performance. Certain h/w requirement needs to be taken care in driver. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: NVME interface target prop addedShivasharan S2017-02-131-0/+14
| | | | | | | | | | | This patch fetch true values of NVME property from FW using New DCMD interface MR_DCMD_DEV_GET_TARGET_PROP Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: NVME Interface detection and prop settingsShivasharan S2017-02-131-7/+16
| | | | | | | | | | | | | | Adding detection logic for NVME device attached behind Ventura controller. Driver set HostPageSize in IOC_INIT frame to inform about page size for NVME devices. Firmware reports NVME page size to the driver. PD INFO DCMD provide new interface type NVME_PD. Driver set property of NVME device. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: change issue_dcmd to return void from intShivasharan S2017-02-131-1/+1
| | | | | | | | | | | | With the changes to remove checks for a valid request descriptor, issue_dcmd will now always return DCMD_SUCCESS. This patch changes return type of issue_dcmd to void and change all callers appropriately. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Refactor MEGASAS_IS_LOGICAL macro using sdevShivasharan S2017-02-131-2/+2
| | | | | | | | Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Revert "scsi: megaraid_sas: Enable or Disable Fast path based on the PCI ↵Shivasharan S2017-02-131-8/+0
| | | | | | | | | | | | | | | | | | Threshold Bandwidth" This reverts commit "3e5eadb1a881" ("scsi: megaraid_sas: Enable or Disable Fast path based on the PCI Threshold Bandwidth") This patch was aimed to increase performance of R1 Write operation for large IO size. Since this method used timer approach, it turn on/off fast path did not work as expected. Patch 0013 describes new algorithm and performance number. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: driver version upgradeSasikumar Chandrasekaran2017-01-101-2/+2
| | | | | | | | Upgrade driver version. Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Implement the PD Map support for SAS3.5 Generic Megaraid ↵Sasikumar Chandrasekaran2017-01-101-27/+78
| | | | | | | | | | Controllers Update Linux driver to use new pdTargetId field for JBOD target ID Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Enable or Disable Fast path based on the PCI Threshold ↵Sasikumar Chandrasekaran2017-01-101-0/+8
| | | | | | | | | | Bandwidth Large SEQ IO workload should sent as non fast path commands Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Dynamic Raid Map Changes for SAS3.5 Generic Megaraid ↵Sasikumar Chandrasekaran2017-01-101-0/+7
| | | | | | | | | | | Controllers SAS3.5 Generic Megaraid Controllers FW will support new dynamic RaidMap to have different sizes for different number of supported VDs. Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: SAS3.5 Generic Megaraid Controllers Fast Path for RAID ↵Sasikumar Chandrasekaran2017-01-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1/10 Writes To improve RAID 1/10 Write performance, OS drivers need to issue the required Write IOs as Fast Path IOs (after the appropriate checks allowing Fast Path to be used) to the appropriate physical drives (translated from the OS logical IO) and wait for all Write IOs to complete. Design: A write IO on RAID volume will be examined if it can be sent in Fast Path based on IO size and starting LBA and ending LBA falling on to a Physical Drive boundary. If the underlying RAID volume is a RAID 1/10, driver issues two fast path write IOs one for each corresponding physical drive after computing the corresponding start LBA for each physical drive. Both write IOs will have the same payload and are posted to HW such that replies land in the same reply queue. If there are no resources available for sending two IOs, driver will send the original IO from SCSI layer to RAID volume through the Firmware. Based on PCI bandwidth and write payload, every second this feature is enabled/disabled. When both IOs are completed by HW, the resources will be released and SCSI IO completion handler will be called. Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: SAS3.5 Generic Megaraid Controllers Stream Detection and ↵Sasikumar Chandrasekaran2017-01-101-0/+1
| | | | | | | | | | | | | | | | | | | | IO Coalescing Detect sequential Write IOs and pass the hint that it is part of sequential stream to help HBA Firmware do the Full Stripe Writes. For read IOs on certain RAID volumes like Read Ahead volumes,this will help driver to send it to Firmware even if the IOs can potentially be sent to hardware directly (called fast path) bypassing firmware. Design: 8 streams are maintained per RAID volume as per the combined firmware/driver design. When there is no stream detected the LRU stream is used for next potential stream and LRU/MRU map is updated to make this as MRU stream. Every time a stream is detected the MRU map is updated to make the current stream as MRU stream. Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: 128 MSIX SupportSasikumar Chandrasekaran2017-01-101-0/+1
| | | | | | | | | SAS3.5 Generic Megaraid based Controllers will have the support for 128 MSI-X vectors, resulting in the need to support 128 reply queues Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: megaraid_sas: Add new pci device Ids for SAS3.5 Generic Megaraid ↵Sasikumar Chandrasekaran2017-01-101-3/+9
| | | | | | | | | | Controllers This patch contains new pci device ids for SAS3.5 Generic Megaraid Controllers Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2016-12-141-3/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SCSI updates from James Bottomley: "This update includes the usual round of major driver updates (ncr5380, lpfc, hisi_sas, megaraid_sas, ufs, ibmvscsis, mpt3sas). There's also an assortment of minor fixes, mostly in error legs or other not very user visible stuff. The major change is the pci_alloc_irq_vectors replacement for the old pci_msix_.. calls; this effectively makes IRQ mapping generic for the drivers and allows blk_mq to use the information" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (256 commits) scsi: qla4xxx: switch to pci_alloc_irq_vectors scsi: hisi_sas: support deferred probe for v2 hw scsi: megaraid_sas: switch to pci_alloc_irq_vectors scsi: scsi_devinfo: remove synchronous ALUA for NETAPP devices scsi: be2iscsi: set errno on error path scsi: be2iscsi: set errno on error path scsi: hpsa: fallback to use legacy REPORT PHYS command scsi: scsi_dh_alua: Fix RCU annotations scsi: hpsa: use %phN for short hex dumps scsi: hisi_sas: fix free'ing in probe and remove scsi: isci: switch to pci_alloc_irq_vectors scsi: ipr: Fix runaway IRQs when falling back from MSI to LSI scsi: dpt_i2o: double free on error path scsi: cxlflash: Migrate scsi command pointer to AFU command scsi: cxlflash: Migrate IOARRIN specific routines to function pointers scsi: cxlflash: Cleanup queuecommand() scsi: cxlflash: Cleanup send_tmf() scsi: cxlflash: Remove AFU command lock scsi: cxlflash: Wait for active AFU commands to timeout upon tear down scsi: cxlflash: Remove private command pool ...
| * scsi: megaraid_sas: switch to pci_alloc_irq_vectorsHannes Reinecke2016-12-071-1/+0
| | | | | | | | | | | | | | | | [mkp: fixed bad indentation] Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: megaraid_sas: driver version upgradeKashyap Desai2016-11-081-2/+2
| | | | | | | | | | | | Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: megaraid_sas: Send SYNCHRONIZE_CACHE for VD to firmwareKashyap Desai2016-11-081-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Until now the megaraid_sas driver has reported successful completion on SYNCHRONIZE_CACHE commands without sending them down to the controller. The controller firmware has been responsible for taking care of flushing disk caches for all drives that belong to a Virtual Disk at the time of system reboot/shutdown. There may have been a reason to avoid sending SYNCHRONIZE_CACHE to a VD in the past but that no longer appears to be valid. Older versions of MegaRaid firmware (Gen2 and Gen2.5) set the WCE bit for Virtual Disks but the firmware does not report correct completion status for a SYNCHRONIZE_CACHE command. As a result, we must use another method to identify whether it is safe to send the command to the controller. We use the canHandleSyncCache firmware flag in the scratch pad register at offset 0xB4. New SYNCHRONIZE_CACHE behavior: IF 'JBOD' Driver sends SYNCHRONIZE_CACHE command to the firmware Firmware sends SYNCHRONIZE_CACHE to drive Firmware obtains status from drive and returns same status back to driver ELSEIF 'VirtualDisk' IF firmware supports new API bit called canHandleSyncCache Driver sends SYNCHRONIZE_CACHE command to the firmware Firmware does not send SYNCHRONIZE_CACHE to drives Firmware returns SUCCESS ELSE Driver does not send SYNCHRONIZE_CACHE command to the firmware Driver return SUCCESS for that command ENDIF ENDIF [mkp: edited patch description] Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regressionSumit Saxena2016-11-091-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | This patch will fix regression caused by commit 1e793f6fc0db ("scsi: megaraid_sas: Fix data integrity failure for JBOD (passthrough) devices"). The problem was that the MEGASAS_IS_LOGICAL macro did not have braces and as a result the driver ended up exposing a lot of non-existing SCSI devices (all SCSI commands to channels 1,2,3 were returned as SUCCESS-DID_OK by driver). [mkp: clarified patch description] Fixes: 1e793f6fc0db920400574211c48f9157a37e3945 Reported-by: Jens Axboe <axboe@kernel.dk> CC: stable@vger.kernel.org Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Tested-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Tested-by: Jens Axboe <axboe@fb.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* megaraid_sas: driver version upgradeSumit Saxena2016-04-151-2/+2
| | | | | | Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Hannes Reinicke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* megaraid_sas: reduce memory footprints in kdump modeSumit Saxena2016-04-151-0/+2
| | | | | | | | | | | | | | | | | | This patch will reduce memory footprints of megaraid_sas driver when booted in kdump mode. Driver will not allocate memory for optional and perfromance oriented features. Below are key changes done in megaraid_sas driver to do this: 1. Limit Controller's queue depth to 100 in kdump mode. 2. Do not allocate memory for system info buffer and PD info buffer. 3. Disable performance oriented features e.g. Disable RDPQ mode, disable dual queue depth, restrict to single MSI-x vector. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Hannes Reinicke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* megaraid_sas: Don't issue kill adapter for MFI controllers in case of PD ↵Sumit Saxena2016-03-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | list DCMD failure There are few MFI adapters which do not support MR_DCMD_PD_LIST_QUERY so if MFI adapters fail this DCMD, it should not be considered as FATAL and driver should not issue kill adapter and set per controller's instance variable- pd_list_not_supported so that same variable can be used inside functions- slave_alloc and slave_configure to allow firmware scan. Killing adapter because of DCMD failure when this DCMD is not supported causes driver's probe getting failed. This issue got introduced by commit 6d40afbc7d13 ("megaraid_sas: MFI IO timeout handling"). Killing adapter in case of this DCMD failure should be limited to Fusion adapters only. Per controller's instance variable allow_fw_scan is removed as pd_list_not_supported better reflect the purpose. Fixes: 6d40afbc7d13359b30a5cd783e3db6ebefa5f40a Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinicke <hare@suse.de> Reviewed-by: Ewan Milne <emilne@redhat.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* megaraid_sas: Fix for IO failing post OCR in SRIOV environmentSumit Saxena2016-02-231-4/+9
| | | | | | | | | | | | 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>
* megaraid_sas: driver version upgradeSumit Saxena2016-02-231-2/+2
| | | | | Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
generated by cgit (git 2.34.1) at 2025-03-03 18:15:29 +0000