- 16 Feb, 2017 1 commit
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Christoph Hellwig authored
Signed-off-by:
Christoph Hellwig <hch@lst.de> Acked-by:
Narsimhulu Musini <nmusini@cisco.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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- 13 Feb, 2017 39 commits
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Shivasharan S authored
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:
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Shivasharan S authored
For RAID1 FastPath writes, driver needs to allocate extra commands internally to accommodate for the extra peer command being sent. Currently driver is allocating 2 extra commands for each but only one extra command is necessary. Set RAID_1_10_RMW_CMDS to 2 and also change macro name to RAID_1_PEER_CMDS. Signed-off-by:
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Shivasharan S authored
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.htmlReported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Reviewed-by:
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Shivasharan S authored
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Shivasharan S authored
Fix - increase internal command pool to 8. Signed-off-by:
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Shivasharan S authored
FIX - Do not use random delay to synchronize with IRQ. Use kernel API. Signed-off-by:
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Shivasharan S authored
Error handling: Bail out the driver load if key FW cmds (LD_LIST) are not return successful. Clean up error handling in megasas_init_fw. Signed-off-by:
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Shivasharan S authored
Code refactoring to build_mpt_mfi_pass_thru to return void. Signed-off-by:
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Shivasharan S authored
Error handling: If controller reset is not able to recover, kill HBA and quit immediately. Signed-off-by:
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Shivasharan S authored
scsi: megaraid_sas: Do not set fp_possible if TM capable for non-RW syspdIO, change fp_possible to bool FIX - firmware wants non-RW SYS PD IOs to avoid FastPath for better tracking and other functionalities if the device is task management capable. Signed-off-by:
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Shivasharan S authored
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Shivasharan S authored
Memset the IO frame to zero after release. Signed-off-by:
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Shivasharan S authored
Fix to account for the reply_q_sz not exceeding the maximum commands that the firmware can support, instance->max_fw_cmds is already decremented in megasas_fusion_update_can_queue(). Remove the extra decrement logic in code. Signed-off-by:
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Shivasharan S authored
Minor Optimization: No need to update HBA can_queue value if the current max FW commands is equal to earlier value. Signed-off-by:
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Shivasharan S authored
Since maximum supported FW commands are all defined as u16, change all local variables referring to max_cmd from u32 to u16. Signed-off-by:
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Shivasharan S authored
scsi: megaraid_sas: set pd_after_lb from MR_BuildRaidContext and initialize pDevHandle to MR_DEVHANDLE_INVALID Issue is limited for Syncro firmware where pd_after_lb is not set but is accidentally used. Not a functional issue, but results in low performance due to improper load balancing between two LUNs. Signed-off-by:
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Shivasharan S authored
Fetch the latest controller OCR capability from FW before sending MR_DCMD_CTRL_SHUTDOWN When application sends a shutdown DCMD (MR_DCMD_CTRL_SHUTDOWN), driver will fetch latest controller information from firmware. This is to ensure that driver always has latest OCR capability of controller before sending the DCMD. Signed-off-by:
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Shivasharan S authored
Fix kernel warning for accessing unaligned memory access in driver. Signed-off-by:
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Shivasharan S authored
Fix endiannes fixes for Ventura specific. Signed-off-by:
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Shivasharan S authored
Fix if RDPQ mode enabled MR FW is deployed on big endian host machine, driver does not setup reply address correctly. Signed-off-by:
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Shivasharan S authored
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 authored
scsi: megaraid_sas: In validate raid map, raid capability is not converted to cpu format for all lds On a host, if an ld is deleted there is a hole in the ld array returned by the FW. But in MR_ValidateMapInfo we are not accounting for holes in the ld array and traverse only upto index num_lds. This patch takes care of converting the capability field of all the valid lds in the ld raid map. Signed-off-by:
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Shivasharan S authored
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:
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Shivasharan S authored
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Shivasharan S authored
Add additional logging from driver in OCR context. Add debug logs for partial completion of IOs is iodone context. Signed-off-by:
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Shivasharan S authored
Fixing issue of not setting residual bytes correctly. Signed-off-by:
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Shivasharan S authored
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:
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Shivasharan S authored
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:
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Shivasharan S authored
This patch fetch true values of NVME property from FW using New DCMD interface MR_DCMD_DEV_GET_TARGET_PROP Signed-off-by:
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Shivasharan S authored
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:
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Shivasharan S authored
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:
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Shivasharan S authored
No functional change. Code clean up. Removing error code which is not valid scenario. In megasas_get_request_descriptor we can remove the error handling which is not required. With fusion controllers, if there is a valid message frame available, we are guaranteed to get a corresponding request descriptor. Signed-off-by:
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Shivasharan S authored
Moving to use DID_REQUEUE return type for reliable unconditional retries. Driver wants unconditional re-queue, so replace DID_RESET with DID_REQUEUE Discussed below - https://www.spinics.net/lists/linux-scsi/msg102848.htmlSigned-off-by:
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Shivasharan S authored
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Shivasharan S authored
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Shivasharan S authored
No functional change. Code refactor. megasas_fire_cmd_fusion can always use 32 bit descriptor write for ventura. No need to pass extra flag. Only IOC INIT required 64 bit Descriptor write. Signed-off-by:
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Shivasharan S authored
No functional change. Code refactor. Remove function megasas_fpio_to_ldio as we never require to convert fpio to ldio because of frame unavailability. Grab extra frame of raid 1 write fast path before it creates first frame as Fast Path. Removed is_raid_1_fp_write flag as raid 1 write fast path command is decided using r1_alt_dev_handle only. Move resetting megasas_cmd_fusion fields at common function megasas_return_cmd_fusion. Signed-off-by:
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Shivasharan S authored
No functional change. Code refactor. Signed-off-by:
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Shivasharan S authored
This reverts commit "3e5eadb1" ("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:
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