- 25 Oct, 2023 11 commits
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Alice Chao authored
While error handler force complete command (Thread A) and completion IRQ raising (Thread B) of the same command, it may cause race condition. Below is racing step (from 1 to 6): ufshcd_mcq_compl_pending_transfer (Thread A) 1 if (cmd && !test_bit(SCMD_STATE_COMPLETE, &cmd->state)) { 5 spin_lock_irqsave(&hwq->cq_lock, flags); // wait lock release set_host_byte(cmd, DID_REQUEUE); 6 ufshcd_release_scsi_cmd(hba, lrbp); // access null pointer scsi_done(cmd); spin_unlock_irqrestore(&hwq->cq_lock, flags); } ufshcd_mcq_poll_cqe_lock (Thread B) 2 spin_lock_irqsave(&hwq->cq_lock, flags); ufshcd_mcq_poll_cqe_nolock() ufshcd_compl_one_cqe() 3 ufshcd_release_scsi_cmd() // lrbp->cmd = NULL; 4 spin_unlock_irqrestore(&hwq->cq_lock, flags); Signed-off-by:Alice Chao <alice.chao@mediatek.com> Link: https://lore.kernel.org/r/20231024084324.12197-1-alice.chao@mediatek.comReviewed-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Hannes Reinecke authored
Found by Smatch. Fixes: 5bcd3bfb ("scsi: megaraid: Pass in NULL scb for host reset") Reported-by:
Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by:
Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20231023073021.21954-1-hare@suse.deSigned-off-by:
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Hannes Reinecke authored
Found by smatch. Fixes: c67e6380 ("scsi: aic79xx: Do not reference SCSI command when resetting device") Reported-by:
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Hannes Reinecke authored
Detected by smatch. Fixes: 17865dc2 ("scsi: message: fusion: Open-code mptfc_block_error_handler() for bus reset") Reported-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Ranjan Kumar authored
The retry loop continues to iterate until the count reaches 30, even after receiving the correct value. Exit loop when a non-zero value is read. Fixes: 4ca10f3e ("scsi: mpt3sas: Perform additional retries if doorbell read returns 0") Cc: stable@vger.kernel.org Signed-off-by:
Ranjan Kumar <ranjan.kumar@broadcom.com> Link: https://lore.kernel.org/r/20231020105849.6350-1-ranjan.kumar@broadcom.comSigned-off-by:
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Su Hui authored
Return error code directly to save space and be more clear. Signed-off-by:
Su Hui <suhui@nfschina.com> Link: https://lore.kernel.org/r/20231020023326.43898-1-suhui@nfschina.comReviewed-by:
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Wenchao Hao authored
Add comment to indicate that the callback function target_destroy in the scsi_host_template must not sleep. Signed-off-by:
Wenchao Hao <haowenchao2@huawei.com> Link: https://lore.kernel.org/r/20231018113746.1940197-3-haowenchao2@huawei.comReviewed-by:
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Wenchao Hao authored
This is just a cleanup for scsi_dev_queue_ready() to avoid a redundant goto and if statement. No functional change. Signed-off-by:
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Hannes Reinecke authored
When breaking out of an shost_for_each_device() loop one needs to do an explicit scsi_device_put(). Fixes: c2a14ab3 ("scsi: pmcraid: Select device in pmcraid_eh_target_reset_handler()") Signed-off-by:
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Yang Li authored
Fix kernel-doc comment to silence the warnings: drivers/target/target_core_transport.c:1930: warning: Excess function parameter 'cmd' description in 'target_submit' drivers/target/target_core_transport.c:1930: warning: Function parameter or member 'se_cmd' not described in 'target_submit' Reported-by:
Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=6844Signed-off-by:
Yang Li <yang.lee@linux.alibaba.com> Link: https://lore.kernel.org/r/20231017030913.89973-1-yang.lee@linux.alibaba.comReviewed-by:
Mike Christie <michael.christie@oracle.com> Signed-off-by:
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Yang Li authored
Fix kernel-doc comment to silence the warnings: drivers/scsi/pmcraid.c:2697: warning: Excess function parameter 'scsi_cmd' description in 'pmcraid_reset_device' drivers/scsi/pmcraid.c:2697: warning: Function parameter or member 'scsi_dev' not described in 'pmcraid_reset_device' Reported-by:
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- 17 Oct, 2023 15 commits
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Douglas Gilbert authored
The default handling of the NOT READY sense key is to wait for the device to become ready. The "wait" is assumed to be relatively short. However there is a sub-class of NOT READY that have the "... in progress" phrase in their additional sense code and these can take much longer. Following on from commit 505aa4b6 ("scsi: sd: Defer spinning up drive while SANITIZE is in progress") we now have element depopulation and restoration that can take a long time. For example, over 24 hours for a 20 TB, 7200 rpm hard disk to depopulate 1 of its 20 elements. Add handling of ASC/ASCQ: 0x4,0x24 (depopulation in progress) and ASC/ASCQ: 0x4,0x25 (depopulation restoration in progress) to sd.c . The scsi_lib.c has incomplete handling of these two messages, so complete it. Signed-off-by:
Douglas Gilbert <dgilbert@interlog.com> Link: https://lore.kernel.org/r/20231015050650.131145-1-dgilbert@interlog.comSigned-off-by:
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Manivannan Sadhasivam authored
OPP framework can be used to scale the clocks along with other entities such as regulators, performance state etc... So let's add support for parsing OPP from devicetree. OPP support in devicetree is added through the "operating-points-v2" property which accepts the OPP table defining clock frequency, regulator voltage, power domain performance state etc... Since the UFS controller requires multiple clocks to be controlled for proper working, devm_pm_opp_set_config() has been used which supports scaling multiple clocks through custom ufshcd_opp_config_clks() callback. It should be noted that the OPP support is not compatible with the old "freq-table-hz" property. So only one can be used at a time even though the UFS core supports both. Co-developed-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by:
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20231012172129.65172-4-manivannan.sadhasivam@linaro.orgSigned-off-by:
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Manivannan Sadhasivam authored
UFS core is only scaling the clocks during devfreq scaling and initialization. But for an optimum power saving, regulators should also be scaled along with the clocks. So let's use the OPP framework which supports scaling clocks, regulators, and performance state using OPP table defined in devicetree. For accomodating the OPP support, the existing APIs (ufshcd_scale_clks, ufshcd_is_devfreq_scaling_required and ufshcd_devfreq_scale) are modified to accept "freq" as an argument which in turn used by the OPP helpers. The OPP support is added along with the old freq-table based clock scaling so that the existing platforms work as expected. Co-developed-by:
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Krzysztof Kozlowski authored
Except scaling UFS and bus clocks, it's necessary to scale also the voltages of regulators or power domain performance state levels. Adding Operating Performance Points table allows to adjust power domain performance state, depending on the UFS clock speed. OPPv2 deprecates previous property limited to clock scaling: freq-table-hz. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Martin K. Petersen authored
Wenchao Hao <haowenchao2@huawei.com> says: The original error injection mechanism was based on scsi_host which could not inject fault for a single SCSI device. This patchset provides the ability to inject errors for a single SCSI device. Now we support inject timeout errors, queuecommand errors, and hostbyte, driverbyte, statusbyte, and sense data for specific SCSI Command. Two new error injection is defined to make abort command or reset LUN failed. Besides error injection for single device, this patchset add a new interface to make reset target failed for each scsi_target. The first two patch add a debugfs interface to add and inquiry single device's error injection info; the third patch defined how to remove an injection which has been added. The following 5 patches use the injection info and generate the related error type. The last two just add a new interface to make reset target failed and control scsi_device's allow_restart flag. Link: https://lore.kernel.org/r/20231010092051.608007-1-haowenchao2@huawei.comSigned-off-by:
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Wenchao Hao authored
Add new module param "allow_restart" to control scsi_device's allow_restart flag. This flag determines if EH is triggered after a command completes with sense_key 0x6, ASC 0x4 and ASCQ 0x2. EH would be triggered if allow_restart=1 in this condition. The new param can be used with the error injection capability to test how commands completing with sense_key 0x6, ASC 0x4 and ASCQ 0x2 are handled. Signed-off-by:
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Wenchao Hao authored
The interface is found at /sys/kernel/debug/scsi_debug/target<h:c:t>/fail_reset where <h:c:t> identifies the target to inject errors on. It's a simple bool type interface which would make this target's reset fail if set to 'Y'. Signed-off-by:
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Wenchao Hao authored
Add error injection type 4 to make scsi_debug_device_reset() return FAILED. Fail abort command format: +--------+------+-------------------------------------------------------+ | Column | Type | Description | +--------+------+-------------------------------------------------------+ | 1 | u8 | Error type, fixed to 0x4 | +--------+------+-------------------------------------------------------+ | 2 | s32 | Error count | | | | 0: this rule will be ignored | | | | positive: the rule will always take effect | | | | negative: the rule takes effect n times where -n is | | | | the value given. Ignored after n times | +--------+------+-------------------------------------------------------+ | 3 | x8 | SCSI command opcode, 0xff for all commands | +--------+------+-------------------------------------------------------+ Examples: error=/sys/kernel/debug/scsi_debug/0:0:0:1/error echo "4 -10 0x12" > ${error} will make the device return FAILED when trying to reset LUN with inquiry command 10 times. error=/sys/kernel/debug/scsi_debug/0:0:0:1/error echo "4 -10 0xff" > ${error} will make the device return FAILED when trying to reset LUN 10 times. Usually we do not care about what command it is when trying to perform reset LUN, so 0xff could be applied. Signed-off-by: -
Wenchao Hao authored
Add error injection type 3 to make scsi_debug_abort() return FAILED. Fail abort command format: +--------+------+-------------------------------------------------------+ | Column | Type | Description | +--------+------+-------------------------------------------------------+ | 1 | u8 | Error type, fixed to 0x3 | +--------+------+-------------------------------------------------------+ | 2 | s32 | Error count | | | | 0: this rule will be ignored | | | | positive: the rule will always take effect | | | | negative: the rule takes effect n times where -n is | | | | the value given. Ignored after n times | +--------+------+-------------------------------------------------------+ | 3 | x8 | SCSI command opcode, 0xff for all commands | +--------+------+-------------------------------------------------------+ Examples: error=/sys/kernel/debug/scsi_debug/0:0:0:1/error echo "3 -10 0x12" > ${error} will make the device return FAILED when aborting inquiry command 10 times. Signed-off-by: -
Wenchao Hao authored
If a fail command error is injected, set the command's status and sense data then finish this SCSI command. Set SCSI command's status and sense data format: +--------+------+-------------------------------------------------------+ | Column | Type | Description | +--------+------+-------------------------------------------------------+ | 1 | u8 | Error type, fixed to 0x2 | +--------+------+-------------------------------------------------------+ | 2 | s32 | Error Count | | | | 0: the rule will be ignored | | | | positive: the rule will always take effect | | | | negative: the rule takes effect n times where -n is | | | | the value given. Ignored after n times | +--------+------+-------------------------------------------------------+ | 3 | x8 | SCSI command opcode, 0xff for all commands | +--------+------+-------------------------------------------------------+ | 4 | x8 | Host byte in scsi_cmd::status | | | | [scsi_cmd::status has 32 bits holding these 3 bytes] | +--------+------+-------------------------------------------------------+ | 5 | x8 | Driver byte in scsi_cmd::status | +--------+------+-------------------------------------------------------+ | 6 | x8 | SCSI Status byte in scsi_cmd::status | +--------+------+-------------------------------------------------------+ | 7 | x8 | SCSI Sense Key in scsi_cmnd | +--------+------+-------------------------------------------------------+ | 8 | x8 | SCSI ASC in scsi_cmnd | +--------+------+-------------------------------------------------------+ | 9 | x8 | SCSI ASCQ in scsi_cmnd | +--------+------+-------------------------------------------------------+ Examples: error=/sys/kernel/debug/scsi_debug/0:0:0:1/error echo "2 -10 0x88 0 0 0x2 0x3 0x11 0x0" >${error} will make device's read command return with media error with additional sense of "Unrecovered read error" (UNC): Acked-by: -
Wenchao Hao authored
If a fail queuecommand error is injected, return the failed value defined in the rule from queuecommand. Make queuecommand return format: +--------+------+-------------------------------------------------------+ | Column | Type | Description | +--------+------+-------------------------------------------------------+ | 1 | u8 | Error type, fixed to 0x1 | +--------+------+-------------------------------------------------------+ | 2 | s32 | Error count | | | | 0: this rule will be ignored | | | | positive: the rule will always take effect | | | | negative: the rule takes effect n times where -n is | | | | the value given. Ignored after n times | +--------+------+-------------------------------------------------------+ | 3 | x8 | SCSI command opcode, 0xff for all commands | +--------+------+-------------------------------------------------------+ | 4 | x32 | The queuecommand() return value we want | +--------+------+-------------------------------------------------------+ Examples: error=/sys/kernel/debug/scsi_debug/0:0:0:1/error echo "1 1 0x12 0x1055" > ${error} will make each INQUIRY command sent to that device return 0x1055 (SCSI_MLQUEUE_HOST_BUSY). Acked-by: -
Wenchao Hao authored
If a timeout error is injected, return 0 from scsi_debug_queuecommand to make the command time out. Time out SCSI command format: +--------+------+-------------------------------------------------------+ | Column | Type | Description | +--------+------+-------------------------------------------------------+ | 1 | u8 | Error type, fixed to 0x0 | +--------+------+-------------------------------------------------------+ | 2 | s32 | Error count | | | | 0: this rule will be ignored | | | | positive: the rule will always take effect | | | | negative: the rule takes effect n times where -n is | | | | the value given. Ignored after n times | +--------+------+-------------------------------------------------------+ | 3 | x8 | SCSI command opcode, 0xff for all commands | +--------+------+-------------------------------------------------------+ Examples: error=/sys/kernel/debug/scsi_debug/0:0:0:1/error echo "0 -10 0x12" > ${error} will make the device's inquiry command time out 10 times. echo "0 1 0x12" > ${error} will make the device's inquiry time out each time it is invoked on this device. Acked-by: -
Wenchao Hao authored
The grammar to remove error injection is a line with fixed 3 columns separated by spaces. First column is fixed to "-". It tells this is a removal operation. Second column is the error code to match. Third column is the scsi command to match. For example the following command would remove timeout injection of inquiry command: echo "- 0 0x12" > /sys/kernel/debug/scsi_debug/0:0:0:1/error Acked-by: -
Wenchao Hao authored
This new facility uses the debugfs pseudo file system which is typically mounted under the /sys/kernel/debug directory and requires root permissions to access. The interface file is found at /sys/kernel/debug/scsi_debug/<h:c:t:l>/error where <h:c:t:l> identifies the device (logical unit (LU)) to inject errors on. For the following description the ${error} environment variable is assumed to be set to/sys/kernel/debug/scsi_debug/1:0:0:0/error where 1:0:0:0 is a pseudo device (LU) owned by the scsi_debug driver. Rules are written to ${error} in the normal sysfs fashion (e.g. 'echo "0 -2 0x12" > ${error}'). More than one rule can be active on a device at a time and inactive rules (i.e. those whose error count is 0) remain in the rule listing. The existing rules can be read with 'cat ${error}' with oneline output for each rule. The interface format is line-by-line, each line is an error injection rule. Each rule contains integers separated by spaces, the first three columns correspond to "Error code", "Error count" and "SCSI command", other columns depend on Error code. General rule format: +--------+------+-------------------------------------------------------+ | Column | Type | Description | +--------+------+-------------------------------------------------------+ | 1 | u8 | Error code | | | | 0: timeout SCSI command | | | | 1: fail queuecommand, make queuecommand return | | | | given value | | | | 2: fail command, finish command with SCSI status, | | | | sense key and ASC/ASCQ values | | | | 3: make abort commands for specific command fail | | | | 4: make reset lun for specific command fail | +--------+------+-------------------------------------------------------+ | 2 | s32 | Error count | | | | 0: this rule will be ignored | | | | positive: the rule will always take effect | | | | negative: the rule takes effect n times where -n is | | | | the value given. Ignored after n times | +--------+------+-------------------------------------------------------+ | 3 | x8 | SCSI command opcode, 0xff for all commands | +--------+------+-------------------------------------------------------+ | ... | xxx | Error type specific fields | +--------+------+-------------------------------------------------------+ Notes: - When multiple error inject rules are added for the same SCSI command, the one with smaller error code will take effect (and the others will be ignored). - If the same error (i.e. same Error code and SCSI command) is added, the older one will be overwritten.. - Currently, the basic types are (u8/u16/u32/u64/s8/s16/s32/s64) and the hexadecimal types (x8/x16/x32/x64). - Where a hexadecimal value is expected (e.g. Column 3: SCSI command opcode) the "0x" prefix is optional on the value (e.g. the INQUIRY opcode can be given as '0x12' or '12'). - When the Error count is negative, reading ${error} will show that value incrementing, stopping when it gets to 0. Acked-by: -
Wenchao Hao authored
Create directory scsi_debug in the root of the debugfs filesystem. Prepare to add interface for manage error injection. Acked-by:
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- 13 Oct, 2023 14 commits
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Martin K. Petersen authored
Justin Tee <justintee8345@gmail.com> says: Update lpfc to revision 14.2.0.15 This patch set contains error handling fixes, ELS bug fixes, and logging improvements. The patches were cut against Martin's 6.7/scsi-queue tree. Link: https://lore.kernel.org/r/20231009161812.97232-1-justintee8345@gmail.comSigned-off-by:
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Justin Tee authored
Update lpfc version to 14.2.0.15. Signed-off-by:
Justin Tee <justin.tee@broadcom.com> Link: https://lore.kernel.org/r/20231009161812.97232-7-justintee8345@gmail.comSigned-off-by:
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Justin Tee authored
The preexisting LOG_NODE message flag frequently spams a subset of the same log messages during normal FC driver operations. When analyzing driver logs, this sometimes leads to difficulty in troubleshooting. Because LOG_IP log message flag is unused, convert it to a new LOG_NODE_VERBOSE flag. The LOG_NODE_VERBOSE shall specifically be used for diagnosing issues that require precise ndlp tracking detail. Signed-off-by:
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Justin Tee authored
A WCQE success completion status does not guarantee valid LS_ACC receipt for ELS commands. So, introduce a small helper routine that validates ELS LS_ACC frames in ELS cmpl routines. Signed-off-by:
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Justin Tee authored
Currently, NPIV ports send PRLI_ACC to all received unsolicited PRLI requests. For an NPIV port, there is no point to PRLI_ACC if the received PRLI request has the initiator function bit set and the target function bit unset. Modify the lpfc_rcv_prli_support_check() routine to send a PRLI_RJT in such cases. NPIV ports are expected to send PRLI_ACC only if the Target function bit is set. Signed-off-by:
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Justin Tee authored
During receipt of a hardware error attention ACQE, IOERR_SLI_DOWN status is set by the driver for all outstanding I/Os. In such hardware error attention cases, we can treat the situation exactly the same as pci_channel_offline. Thus, add IOERR_SLI_DOWN status to the same category as pci_channel_offline handling in lpfc_nvme_io_cmd_cmpl. Signed-off-by:
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Justin Tee authored
In order to enter the !rc if statement block in question, rc had to have been zero to begin with. Thus, the rc = 0 assignment is unnecessary and can be removed. Signed-off-by:
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Martin K. Petersen authored
Chandrakanth patil <chandrakanth.patil@broadcom.com> says: This set of patches includes critical fixes, and updates to the maintainer list. Link: https://lore.kernel.org/r/20231003110021.168862-1-chandrakanth.patil@broadcom.comSigned-off-by:
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Chandrakanth patil authored
Given my active involvement in megaraid_sas development, I am including myself in the maintainers list. Signed-off-by:
Chandrakanth patil <chandrakanth.patil@broadcom.com> Link: https://lore.kernel.org/r/20231003110021.168862-5-chandrakanth.patil@broadcom.comSigned-off-by:
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Chandrakanth patil authored
Driver version update. Signed-off-by:
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Chandrakanth patil authored
The driver now includes the print message 'IO is completed, no reset is required' when a reset is requested but not issued. This message is displayed only when pending SCSI IO is completed before issuing the reset. Signed-off-by:
Sumit Saxena <sumit.saxena@broadcom.com> Link: https://lore.kernel.org/r/20231003110021.168862-3-chandrakanth.patil@broadcom.comSigned-off-by:
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Chandrakanth patil authored
In BMC environments with concurrent access to multiple registers, certain registers occasionally yield a value of 0 even after 3 retries due to hardware errata. As a fix, we have extended the retry count from 3 to 30. The same errata applies to the mpt3sas driver, and a similar patch has been accepted. Please find more details in the mpt3sas patch reference link. Link: https://lore.kernel.org/r/20230829090020.5417-2-ranjan.kumar@broadcom.com Fixes: 272652fc ("scsi: megaraid_sas: add retry logic in megasas_readl") Cc: stable@vger.kernel.org Signed-off-by:
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Martin K. Petersen authored
Mike Christie <michael.christie@oracle.com> says: The following patches were made over Linus tree (Martin's 6.7 branch was missing some changes to sd.c). They only contain the sshdr and rdac retry fixes from the "Allow scsi_execute users to control retries" patchset. The patches in this set are reviewed and tested but the changes to how we do retries will take a little longer and require more testing, so I broke up the series to make them easier to review. Link: https://lore.kernel.org/r/20231004210013.5601-1-michael.christie@oracle.comSigned-off-by:
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Mike Christie authored
If scsi_execute_cmd returns < 0, it doesn't initialize the sshdr, so we shouldn't access the sshdr. If it returns 0, then the cmd executed successfully, so there is no need to check the sshdr. This has us access the sshdr when we get a return value > 0. Signed-off-by:
John Garry <john.g.garry@oracle.com> Reviewed-by:
Martin Wilck <mwilck@suse.com> Signed-off-by:
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