- 05 Jan, 2017 40 commits
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John Garry authored
There is a bug in the current driver in that certain hisi_hba and port structure elements which we access when servicing the CQ interrupt do not use thread-safe accesses; these include hisi_sas_port linked-list of active slots (hisi_sas_port.entry), bitmap of currently allocated IPTT (in hisi_hba.slot_index_tags), and completion queue read pointer. As a solution, lock these elements with the hisi_hba.lock. Signed-off-by:
John Garry <john.garry@huawei.com> Reviewed-by:
Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by:
Zhangfei Gao <zhangfei.gao@linaro.org> Tested-by:
Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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John Garry authored
Currently the all the slot processing for the completion queue is done in ISR context. It is judged that the slot processing can take a long time, especially when a SATA NCQ completes (upto 32 slots). So, as a solution, defer the bulk of the ISR processing to tasklet context. Each CQ will have its down tasklet. Signed-off-by:
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Javier Martinez Canillas authored
If the driver is built as a module, autoload won't work because the module alias information is not filled. So user-space can't match the registered device with the corresponding module. Export the module alias information using the MODULE_DEVICE_TABLE() macro. Before this patch: $ modinfo drivers/scsi/ufs/ufs-qcom.ko | grep alias $ After this patch: $ modinfo drivers/scsi/ufs/ufs-qcom.ko | grep alias alias: of:N*T*Cqcom,ufshcC* alias: of:N*T*Cqcom,ufshc Signed-off-by:
Javier Martinez Canillas <javier@osg.samsung.com> Reviewed-by:
Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by:
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Dolev Raviv authored
Errors such as UIC error, illegal OCS values, and others may require more information for debugging. Such information could be hibern8 events, events sequences, recoverable errors, error history, and more. This patch improves tracking of important errors and events in debug level to be enabled when debugging a such issues. It includes: * UIC error history * Successful hibern8 events * Successful command after hibern8 exit * Clk-freq info * Failed device command * Infrastructure for dumping host controller debug information Signed-off-by:
Dolev Raviv <draviv@codeaurora.org> Signed-off-by:
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Lee Susman authored
Use the ftrace infrastructure to conditionally trace ufs command events. New trace event is created, which samples the following ufs command data: - device name - optional identification string - task tag - doorbell register - number of transfer bytes - interrupt status register - request start LBA - command opcode Currently we only fully trace read(10) and write(10) commands. All other commands which pass through ufshcd_send_command() will be printed with "-1" in the lba and transfer_len fields. Usage: echo 1 > /sys/kernel/debug/tracing/events/ufs/enable cat /sys/kernel/debug/tracing/trace_pipe Signed-off-by:
Lee Susman <lsusman@codeaurora.org> Signed-off-by:
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subhashj@codeaurora.org authored
This patch adds the profiling support for some of the time critical operations like hibern8 enter/exit, clock gating & clock scaling. Reviewed-by:
Venkat Gopalakrishnan <venkatg@codeaurora.org> Signed-off-by:
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subhashj@codeaurora.org authored
Immediately after successful UFS link startup, UFS link power mode would be in PWM-G1, 1-lane, SLOW-AUTO mode. But currently we are doing few of the DME local/peer attributes access before setting the "hba->pwr_info" to default power mode. If we are doing link startup as part of error recovery then old power mode might be set to FAST mode and doing DME peer access (after link startup but before updating "hba->pwr_info" to default power mode) unintentionally tries to switch from FAST to FAST_AUTO mode (if UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE quirk is enabled). Above issue is fixed by setting the default power mode immediately after successful link startup. Reviewed-by:
Sahitya Tummala <stummala@codeaurora.org> Signed-off-by:
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subhashj@codeaurora.org authored
UFS device requires to perform bkops (back ground operations) periodically but host can control (via auto-bkops parameter of device) when device can perform bkops based on its performance requirements. In general, host would like to enable the device's auto-bkops only when it's not doing any regular data transfer but sometimes device may not behave properly if host keeps the auto-bkops disabled. This change adds the capability to let the device auto-bkops always enabled except suspend. Reviewed-by:
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subhashj@codeaurora.org authored
UFS device and link can be put in multiple different low power modes hence UFS driver supports multiple different low power modes. This change sets the default UFS power management level which should put the link hibernate state and device in sleep state. This default power management level gives good power savings with relatively less enter/exit latencies. Reviewed-by:
Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by:
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subhashj@codeaurora.org authored
This patch provides the sysfs attribute to choose the power management level for UFS runtime and system suspend. Reviewed-by:
Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by:
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Sahitya Tummala authored
Provide an option to enable/disable clock scaling during runtime. Write 1/0 to "clkscale_enable" sysfs node to enable/disable clock scaling. Signed-off-by:
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Sahitya Tummala authored
Provide an option to enable/disable clock gating during runtime. Write 1 or 0 to "clkgate_enable" sysfs node to enable/disable clock gating. Signed-off-by:
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Dolev Raviv authored
When a command to a W-LU is timed out via scsi, error handling will treat it as any other LU and send commands such as START_STOP with wrong format or task abort. Those commands are illegal for W-LU according to the UFS spec. To solve it, when an error is recognized those steps are skipped and the last step, reset and restore process, is initiated. Signed-off-by:
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subhashj@codeaurora.org authored
This change adds the ftrace support for following: 1. UFS initialization time 2. Clock gating states 3. Clock scaling states 4. Power management APIs latency 5. BKOPs enable/disable Usage: echo 1 > /sys/kernel/debug/tracing/events/ufs/enable cat /sys/kernel/debug/tracing/trace_pipe Reviewed-by:
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Dolev Raviv authored
Inserts driver dumps for UFS Host Controller registers, Transfer Requests and Task Management Requests. The dumps will occur on driver initialization failure, ufshcd_abort() and on error handling path. Signed-off-by:
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Cao jin authored
Signed-off-by:
Cao jin <caoj.fnst@cn.fujitsu.com> Acked-by:
Nilesh Javali <nilesh.javali@cavium.com> Signed-off-by:
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Colin Ian King authored
Although on most systems va_end is a no-op, it is good practice to use va_end on the function return path, especially since the va_start documenation states: "Each invocation of va_start() must be matched by a corresponding invocation of va_end() in the same function." Found with static analysis by CoverityScan, CIDs 1389477-1389479 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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Jitendra Bhivare authored
Version 11.2.1.0 Signed-off-by:
Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by:
Hannes Reinecke <hare@suse.com> Signed-off-by:
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Ketan Mukadam authored
Add a warning message to indicate obsolete/unsupported BE2 Adapter Family devices Signed-off-by:
Ketan Mukadam <ketan.mukadam@avagotech.com> Signed-off-by:
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Jitendra Bhivare authored
After TPE recovery, CID table needs to be repopulated as per CIDs in WRBQ creation responses. SGL handles table needs to be recreated for posting and its indices need to be resetted. This is achieved by calling beiscsi_cleanup_port when disabling and beiscsi_init_port in enabling port. Signed-off-by:
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Jitendra Bhivare authored
Set CID slot to 0xffff to indicate empty. Check if connection already exists in conn_table before binding. Check if endpoint already NULL before putting back CID. Break ep->conn link in free_ep to ignore completions after freeing. Signed-off-by:
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Jitendra Bhivare authored
wq_name is used only to set WQ name when its being allocated. Remove it from beiscsi_hba structure and define locally. Signed-off-by:
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Jitendra Bhivare authored
Fix errors reported in static analysis. Signed-off-by:
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Jitendra Bhivare authored
This duplicate code got added during manual merging. Signed-off-by:
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Jitendra Bhivare authored
Prepare the IOCTL with appropriate sizes of buffers of V0 and V1. Set missing chute number in V1 IOCTL. Signed-off-by:
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Jitendra Bhivare authored
Added check in beiscsi_process_cq for pio_handle. pio_handle is cleared in beiscsi_put_wrb_handle. This catches any case where task gets cleaned up just before completion. Use back_lock before accessing pio_handle. Signed-off-by:
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Jitendra Bhivare authored
invalid bit in WRB indicates to FW that IO was invalidated before WRB was fetched from host memory. For SkyHawk, this invalid bit in WRB is at a different offset. Use amap_iscsi_wrb_v2 to mark invalid bit for SkyHawk. Signed-off-by:
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Jitendra Bhivare authored
Hold the reference of iscsi_task till invalidation completes. This prevents use of ICD when invalidation of that ICD is being processed. Signed-off-by:
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Jitendra Bhivare authored
System crashes when sg_reset is executed in a loop. CPU: 13 PID: 7073 Comm: sg_reset Tainted: G E 4.8.0-rc1+ #4 RIP: 0010:[<ffffffffa0825370>] [<ffffffffa0825370>] beiscsi_eh_device_reset+0x160/0x520 [be2iscsi] Call Trace: [<ffffffff814c7c77>] ? scsi_host_alloc_command+0x47/0xc0 [<ffffffff814caafa>] scsi_try_bus_device_reset+0x2a/0x50 [<ffffffff814cb46e>] scsi_ioctl_reset+0x13e/0x260 [<ffffffff814ca477>] scsi_ioctl+0x137/0x3d0 [<ffffffffa05e4ba2>] sg_ioctl+0x572/0xc20 [sg] [<ffffffff8123f627>] do_vfs_ioctl+0xa7/0x5d0 The accesses to beiscsi_io_task is being protected in device reset handler with frwd_lock but the freeing of task can happen under back_lock. Hold the reference of iscsi_task till invalidation completes. This prevents use of ICD when invalidation of that ICD is being processed. Use frwd_lock for iscsi_tasks looping and back_lock to access beiscsi_io_task structures. Rewrite mgmt_invalidation_icds to handle allocation and freeing of IOCTL buffer in one place. Signed-off-by:
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Jitendra Bhivare authored
Remove shared structure inv_tbl in phba for all sessions to post invalidation IOCTL. Always allocate and then free the table after use in reset handler. Abort handler needs just one instance so define it on stack. Add checks for BE_INVLDT_CMD_TBL_SZ to not exceed invalidation command table size in IOCTL. Signed-off-by:
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Dan Carpenter authored
There are two places where adpt_i2o_online_hba() is called. Both callers call adpt_i2o_delete_hba(pHba) if adpt_i2o_online_hba() fails and since we also free it here that causes a double free bug. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Corentin Labbe authored
This patch remove linux/miscdevice.h from mptlan.h since mptlan.h does not contain any miscdevice. The only user of it is mptctl.c which already include linux/miscdevice.h So no need to include it twice. Signed-off-by:
Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by:
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Kees Cook authored
Prepare to mark sensitive kernel structures for randomization by making sure they're using designated initializers. These were identified during allyesconfig builds of x86, arm, and arm64, with most initializer fixes extracted from grsecurity. Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Kees Cook authored
Prepare to mark sensitive kernel structures for randomization by making sure they're using designated initializers. These were identified during allyesconfig builds of x86, arm, and arm64, with most initializer fixes extracted from grsecurity. Signed-off-by:
Don Brace <don.brace@microsemi.com> Signed-off-by:
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James Smart authored
lpfc version change to 11.2.0.4 Signed-off-by:
Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by:
James Smart <james.smart@broadcom.com> Reviewed-by:
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James Smart authored
On loosely ordered memory systems (PPC for example), the WQE elements were being updated in memory, but not necessarily flushed before the separate doorbell was written to hw which would cause hw to dma the WQE element. Thus, the hardware occasionally received partially updated WQE data. Add the memory barrier after updating the WQE memory. Signed-off-by:
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James Smart authored
Correct oops on vport port resets. Incorrect WQE type, thus the clearing code actually overstepped the WQE. Signed-off-by:
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James Smart authored
Deprecate lpfc_prot_sg_seg_cnt parameter. Eliminates driver from unnecessarily limiting DIF s/g list length. Signed-off-by:
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James Smart authored
Fix Xlane dynamic LUN set for LUN priority. Dynamic changing of the priority was not getting reflected on the LUN. Signed-off-by:
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James Smart authored
FCoE VPort enable-disable does not bring up the VPort. VPI structure needed to be initialized before being re-registered. Signed-off-by:
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