- 11 Oct, 2018 17 commits
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Avri Altman authored
The UFS host software uses a combination of a host register set and Transfer Request Descriptors in system memory to communicate with host controller hardware. In its mmio space, a separate places are assigned to UTP Transfer Request Descriptor ("utrd") list, and to UTP Task Management Request Descriptor ("utmrd") list. The provided API supports utrd-typed requests: nop out and device management commands. It also supports utmrd-type requests: task management requests. Other UPIU types are not supported for now. We utilize the already existing code for tag and task work queues. That is, all utrd-typed UPIUs are "disguised" as device management commands. Similarly, the utmrd-typed UPUIs uses the task management infrastructure. It is up to the caller to fill the upiu request properly, as it will be copied without any further input validations. Signed-off-by:Avri Altman <avri.altman@wdc.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Bart Van Assche <Bart.VanAssche@wdc.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Avri Altman authored
Use the structure size in pointer arithmetic instead of an opaque 32 bytes for the over-allocation of descriptors. Signed-off-by:
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Avri Altman authored
For now, just provide an API to allocate and remove ufs-bsg node. We will use this framework to manage ufs devices by sending UPIU transactions. For the time being, implements an empty bsg_request() - will add some more functionality in coming patches. Nonetheless, we reveal here the protocol we are planning to use: UFS Transport Protocol Transactions. UFS transactions consist of packets called UFS Protocol Information Units (UPIU). There are UPIU’s defined for UFS SCSI commands, responses, data in and data out, task management, utility functions, vendor functions, transaction synchronization and control, and more. By using UPIUs, we get access to the most fine-grained internals of this protocol, and able to communicate with the device in ways, that are sometimes beyond the capacity of the ufs driver. Moreover and as a result, our core structure - ufs_bsg_node has a pretty lean structure: using upiu transactions that contains the outmost detailed info, so we don't really need complex constructs to support it. Signed-off-by:
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Avri Altman authored
in preparation to send UPIU requests via bsg. Signed-off-by:
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Christoph Hellwig authored
Add a helper that takes a utp_task_req_desc and issues it, which will be useful for UFS bsg support. Rewrite ufshcd_issue_tm_cmd0x to use this new helper. Signed-off-by:
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Christoph Hellwig authored
Remove the pointless task_req_upiu and task_rsp_upiu indirections, which are __le32 arrays always cast to given structures and just add the members directly. Also clean up variables names in use in the callers a bit to make the code more readable. Signed-off-by:
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Lance Roy authored
lockdep_assert_held() is better suited to checking locking requirements, since it won't get confused when someone else holds the lock. This is also a step towards possibly removing spin_is_locked(). Signed-off-by:
Lance Roy <ldr709@gmail.com> Cc: Karan Tilak Kumar <kartilak@cisco.com> Cc: Sesidhar Baddela <sebaddel@cisco.com> Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: <linux-scsi@vger.kernel.org> Reviewed-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
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Nathan Chancellor authored
Clang warns when multiple pairs of parentheses are used for a single conditional statement. drivers/scsi/mpt3sas/mpt3sas_base.c:535:11: warning: equality comparison with extraneous parentheses [-Wparentheses-equality] if ((ioc == NULL)) ~~~~^~~~~~~ drivers/scsi/mpt3sas/mpt3sas_base.c:535:11: note: remove extraneous parentheses around the comparison to silence this warning if ((ioc == NULL)) ~ ^ ~ drivers/scsi/mpt3sas/mpt3sas_base.c:535:11: note: use '=' to turn this equality comparison into an assignment if ((ioc == NULL)) ^~ = drivers/scsi/mpt3sas/mpt3sas_base.c:539:12: warning: equality comparison with extraneous parentheses [-Wparentheses-equality] if ((pdev == NULL)) ~~~~~^~~~~~~ drivers/scsi/mpt3sas/mpt3sas_base.c:539:12: note: remove extraneous parentheses around the comparison to silence this warning if ((pdev == NULL)) ~ ^ ~ drivers/scsi/mpt3sas/mpt3sas_base.c:539:12: note: use '=' to turn this equality comparison into an assignment if ((pdev == NULL)) ^~ = 2 warnings generated. Remove them and while we're at it, simplify the NULL checks as '!var' is used more than 'var == NULL'. Signed-off-by:Nathan Chancellor <natechancellor@gmail.com> Signed-off-by:
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Souptick Joarder authored
Replaced dma_pool_alloc + memset with dma_pool_zalloc. Signed-off-by:
Brajeswar Ghosh <brajeswar.linux@gmail.com> Signed-off-by:
Souptick Joarder <jrdr.linux@gmail.com> Acked-by:
Suganath Prabu <suganath-prabu.subramani@broadcom.com> Signed-off-by:
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Joe Perches authored
All the uses have been removed, delete the macro. Signed-off-by:
Joe Perches <joe@perches.com> Acked-by:
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Joe Perches authored
Convert these uses to ioc_<level> where appropriate. Signed-off-by:
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Joe Perches authored
Remove the logging level as panic calls stop the machine and should always be emitted regardless of requested logging level. These existing panic uses are perhaps inappropriate. Miscellanea: o Coalesce formats and convert MPT3SAS_FMT to "%s: " to improve clarity Signed-off-by:
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Joe Perches authored
Convert the existing 2 uses to make the format and arguments matching more obvious. Miscellanea: o Move the word "enabled" into the format to trivially reduce object size o Remove unnecessary parentheses Signed-off-by:
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Joe Perches authored
These have misordered uses of __func__ and ioc->name that could mismatch MPT3SAS_FMT and "%s: ". Convert them to ioc_<level>. Signed-off-by:
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Joe Perches authored
Use a more common logging style. Done using the perl script below and some typing $ git grep --name-only -w MPT3SAS_FMT -- "*.c" | \ xargs perl -i -e 'local $/; while (<>) { s/\bpr_(info|err|notice|warn)\s*\(\s*MPT3SAS_FMT\s*("[^"]+"(?:\s*\\?\s*"[^"]+"\s*){0,5}\s*),\s*ioc->name\s*/ioc_\1(ioc, \2/g; print;}' Miscellanea for these conversions: o Coalesce formats o Realign arguments o Remove unnecessary parentheses o Use casts to u64 instead of unsigned long long where appropriate o Convert broken pr_info uses to pr_cont o Fix broken format string concatenation with line continuations and excess whitespace Signed-off-by: -
Joe Perches authored
These macros can help identify specific logging uses and eventually perhaps reduce object sizes. Signed-off-by:
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Matthew R. Ochs authored
The uapi header file listed in the cxlflash stanza has a typo. Removed the trailing 's' from the filename. Reported-by:
Matthew R. Ochs <mrochs@linux.ibm.com> Acked-by:
Uma Krishnan <ukrishn@linux.ibm.com> Signed-off-by:
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- 28 Sep, 2018 21 commits
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Himanshu Madhani authored
This patch fixes commit bcc71cc3 ("scsi: qla2xxx: Fix for double free of SRB structure") which placed code in wrong routines. Also updated the use of WARN_ON() to WARN_ON_ONCE() to prevent flooding log messages. Fixes: bcc71cc3 ("scsi: qla2xxx: Fix for double free of SRB structure") Signed-off-by:
Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by:
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Finn Thain authored
The SR_RST bit isn't latched. Hence, detecting a bus reset isn't reliable. When it is detected, the right thing to do is to drop all connected and disconnected commands. The code for that is already present so refactor it and call it when SR_RST is set. Tested-by:
Michael Schmitz <schmitzmic@gmail.com> Signed-off-by:
Finn Thain <fthain@telegraphics.com.au> Signed-off-by:
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Finn Thain authored
The X3T9.2 specification (draft) says, under "6.1.4.2 RESELECTION time-out procedure", that a target may assert RST or go to BUS FREE phase if the initiator does not respond within 200 us. Something like this has been observed with AztecMonster II target. When it happens, all we can do is wait for the target to try again. Tested-by:
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Finn Thain authored
The X3T9.2 specification (draft) says, under "6.1.4.1 RESELECTION", ... The reselected initiator shall then assert the BSY signal within a selection abort time of its most recent detection of being reselected; this is required for correct operation of the time-out procedure. The selection abort time is only 200 us which may be insufficient time for a printk() call. Move the diagnostics to the error paths. Tested-by: -
Finn Thain authored
When NCR5380_abort() returns FAILED, the driver forgets that the target is still busy. Hence, further commands may be sent to the target, which may fail during selection and produce the error message, "reselection after won arbitration?". Prevent this by leaving the busy flag set when NCR5380_abort() fails. Tested-by:
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Finn Thain authored
The X3T9.2 specification (draft) says, under "6.1.4.1 RESELECTION", that "the initiator shall not respond to a RESELECTION phase if other than two SCSI ID bits are on the DATA BUS." This issue (too many bits set) has been observed in the wild, so add a check. Tested-by:
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Finn Thain authored
When sense data is valid, call set_driver_byte(cmd, DRIVER_SENSE). Otherwise some callers of scsi_execute() will ignore sense data. Don't set DID_ERROR or DID_RESET just because sense data is missing. Tested-by:
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Finn Thain authored
This is mostly needed because an AztecMonster II target has been observed disconnecting REQUEST SENSE commands and then failing to reselect properly. Suggested-by:
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Finn Thain authored
The return value is taken to mean "retry" or "don't retry". Change it to bool to improve readability. Fix related comments. No functional change. Tested-by:
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Finn Thain authored
Replace a 'goto' statement with a simple 'return' where possible. This improves readability. No functional change. Tested-by:
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Hannes Reinecke authored
When doing a host reset we should be clearing all outstanding commands, not just the command triggering the reset. [mkp: adjusted Hannes' SoB address] Signed-off-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Cc: Ondrey Zary <linux@rainbow-software.org> Signed-off-by:
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Nathan Chancellor authored
Clang warns when multiple pairs of parentheses are used for a single conditional statement. drivers/message/fusion/mptbase.c:338:11: warning: equality comparison with extraneous parentheses [-Wparentheses-equality] if ((ioc == NULL)) ~~~~^~~~~~~ drivers/message/fusion/mptbase.c:338:11: note: remove extraneous parentheses around the comparison to silence this warning if ((ioc == NULL)) ~ ^ ~ drivers/message/fusion/mptbase.c:338:11: note: use '=' to turn this equality comparison into an assignment if ((ioc == NULL)) ^~ = drivers/message/fusion/mptbase.c:342:12: warning: equality comparison with extraneous parentheses [-Wparentheses-equality] if ((pdev == NULL)) ~~~~~^~~~~~~ drivers/message/fusion/mptbase.c:342:12: note: remove extraneous parentheses around the comparison to silence this warning if ((pdev == NULL)) ~ ^ ~ drivers/message/fusion/mptbase.c:342:12: note: use '=' to turn this equality comparison into an assignment if ((pdev == NULL)) ^~ = 2 warnings generated. Remove them and while we're at it, simplify the NULL checks as '!var' is used more than 'var == NULL'. Reported-by:Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
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Colin Ian King authored
The check for a non-zero drvr_wait is redundant as the same check is performed earlier in the outer while loop, the inner check will always be true if we reached this point inside the while loop. Remove the redundant if check. Detected by cppcheck: (warning) Identical inner 'if' condition is always true. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Acked-by:
Manish Rangankar <Manish.Rangankar@cavium.com> Signed-off-by:
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Giridhar Malavali authored
There is a probability that the SRB structure might have been released by the time the debug log message dereferences it. This patch moved the log messages before the command is issued to the firmware to prevent unknown behavior and kernel crash Fixes: 726b8548 ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> Signed-off-by:
Giridhar Malavali <giridhar.malavali@cavium.com> Reviewed-by:
Ewan D. Milne <emilne@redhat.com> Signed-off-by:
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Giridhar Malavali authored
This patch fixes issue during switch command query where driver was freeing SRB resources multiple times Following stack trace will be seen [ 853.436234] BUG: unable to handle kernel NULL pointer dereference at 0000000000000001 [ 853.436348] IP: [<ffffffff811df514>] kmem_cache_alloc+0x74/0x1e0 [ 853.436476] PGD 0 [ 853.436601] Oops: 0000 [#1] SMP [ 853.454700] [<ffffffff81099f6a>] ? mod_timer+0x14a/0x220 [ 853.455543] [<ffffffff81185465>] mempool_alloc_slab+0x15/0x20 [ 853.456395] [<ffffffff811855a9>] mempool_alloc+0x69/0x170 [ 853.457257] [<ffffffff81098af2>] ? internal_add_timer+0x32/0x70 [ 853.458136] [<ffffffffc0092d2b>] qla2xxx_queuecommand+0x29b/0x3f0 [qla2xxx] [ 853.459024] [<ffffffff8146535a>] scsi_dispatch_cmd+0xaa/0x230 [ 853.459923] [<ffffffff8146e11f>] scsi_request_fn+0x4df/0x680 [ 853.460829] [<ffffffff81029557>] ? __switch_to+0xd7/0x510 [ 853.461747] [<ffffffff812f7113>] __blk_run_queue+0x33/0x40 [ 853.462670] [<ffffffff812f7735>] blk_delay_work+0x25/0x40 [ 853.463603] [<ffffffff810a882a>] process_one_work+0x17a/0x440 [ 853.464546] [<ffffffff810a94f6>] worker_thread+0x126/0x3c0 [ 853.465501] [<ffffffff810a93d0>] ? manage_workers.isra.24+0x2a0/0x2a0 [ 853.466447] [<ffffffff810b099f>] kthread+0xcf/0xe0 [ 853.467379] [<ffffffff810b08d0>] ? insert_kthread_work+0x40/0x40 [ 853.470172] Code: db e2 7e 49 8b 50 08 4d 8b 20 49 8b 40 10 4d 85 e4 0f 84 20 01 00 00 48 85 c0 0f 84 17 01 00 00 49 63 46 20 48 8d 4a 01 4d 8b 06 <49> 8b 1c 04 4c 89 e0 65 49 0f c7 08 0f 94 c0 84 c0 74 ba 49 63 [ 853.472072] RIP [<ffffffff811df514>] kmem_cache_alloc+0x74/0x1e0 [ 853.472971] RSP <ffff88103726fc50> Fixes: 726b8548 ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> Signed-off-by:
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Quinn Tran authored
This patch prevents user space mailbox request from doing chip reset if the mailbox timed out. The chip reset is only reserved for the DPC thread to ensure all mailbox requests are flushed properly. The DPC thread is responsible for the flushing all MBs and chip reset. Fixes: b2000805 ("scsi: qla2xxx: Flush mailbox commands on chip reset") Cc: <stable@ger.kernel.org> Signed-off-by:
Quinn Tran <quinn.tran@cavium.com> Reviewed-by:
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Himanshu Madhani authored
This patch fixes multiple call for qla_nvme_unregister_remote_port() as part of qlt_schedule_session_for_deletion(), Do not call it again during qla_nvme_delete() Fixes: e473b307 ("scsi: qla2xxx: Add FC-NVMe abort processing") Cc: <stable@vger.kernel.org> Reviewed-by:
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Quinn Tran authored
This patch fixes issue where driver clears NPort ID map instead of marking handle in use. Once driver clears NPort ID from the database, it can reuse the same NPort ID resulting in a PLOGI failure. [mkp: fixed Himanshu's SoB] Fixes: a084fd68 ("scsi: qla2xxx: Fix re-login for Nport Handle in use") Cc: <stable@vger.kernel.org> Signed-of-by:
Himanshu Madhani <hmadhani@cavium.com> Signed-off-by:
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Quinn Tran authored
The response data buffer used in switch scan is reused 4 times. (For example, for commands GPN_FT, GNN_FT for FCP and FC-NVME) Before driver reuses this buffer, clear it to prevent duplicate entries in our database. Fixes: a4239945 ("scsi: qla2xxx: Add switch command to simplify fabric discovery" Cc: <stable@vger.kernel.org> Signed-off-by:
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Quinn Tran authored
This patch fixes issue when remoteport registers itself as both FCP and FC-NVMe with the switch, driver will pick FC-NVMe personality as default when scanning for targets. Driver was using comaprative operator instead of bitwise operator to check for fc4_type for both FCP and FC-NVME. Fixes: 2b5b9647 ("scsi: qla2xxx: Fix FC-NVMe LUN discovery") Cc: <stable@vger.kernel.org> Signed-off-by:
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Quinn Tran authored
Send aborts only when chip is active. Fixes: 623ee824 ("scsi: qla2xxx: Fix FC-NVMe IO abort during driver reset") Cc: <stable@vger.kernel.org> # 4.14 Signed-off-by:
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- 27 Sep, 2018 2 commits
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Dan Carpenter authored
We shouldn't allow negative thresholds. I don't know what it would do but it can't be good. Fixes: 8b4673ba ("scsi: qla2xxx: Add support for ZIO6 interrupt threshold") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
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Masanari Iida authored
Default value of ql2xasynctmfenable for qla2xxx driver was set to 1 in commit 043dc1d7 ("scsi: qla2xxx: Enable Async TMF processing") but comment in MODULE_PARAM_DESC was not modified. Signed-off-by:
Masanari Iida <standby24x7@gmail.com> Acked-by:
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