- 21 Feb, 2020 3 commits
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David Disseldorp authored
The emulate_ua_intlck_ctrl device attribute accepts values of 0, 1 or 2 via ConfigFS, which map to unit attention interlocks control codes in the MODE SENSE control Mode Page. Use an enum to track these values so that it's clear that, unlike the remaining emulate_X attributes, emulate_ua_intlck_ctrl isn't boolean. Link: https://marc.info/?l=target-devel&m=158227825428798Suggested-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
David Disseldorp <ddiss@suse.de> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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David Disseldorp authored
This should harden us against configfs API regressions similar to the one fixed by the previous commit. Link: https://marc.info/?l=target-devel&m=158211731505174Signed-off-by:
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David Disseldorp authored
The LIO unmap_zeroes_data device attribute is mapped to the LBPRZ flag in the READ CAPACITY(16) and Thin Provisioning VPD INQUIRY responses. The unmap_zeroes_data attribute is exposed via configfs, where any write value is correctly validated via strtobool(). However, when initialised via target_configure_unmap_from_queue() it takes the value of the device's max_write_zeroes_sectors queue limit, which is non-boolean. A non-boolean value can be read from configfs, but attempting to write the same value back results in -EINVAL, causing problems for configuration utilities such as targetcli. Link: https://marc.info/?l=target-devel&m=158213354011309 Fixes: 2237498f ("target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout") Reviewed-by:
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- 18 Feb, 2020 3 commits
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Link: https://lore.kernel.org/r/20200213000211.GA23171@embeddedor.comReviewed-by:Hannes Reinecke <hare@suse.de> Signed-off-by:
Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by:
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James Smart authored
This patch modifies lpfc to register for Link Integrity events via the use of an RDF ELS and to perform Link Integrity FPIN logging. Specifically, the driver was modified to: - Format and issue the RDF ELS immediately following SCR registration. This registers the ability of the driver to receive FPIN ELS. - Adds decoding of the FPIN els into the received descriptors, with logging of the Link Integrity event information. After decoding, the ELS is delivered to the scsi fc transport to be delivered to any user-space applications. - To aid in logging, simple helpers were added to create enum to name string lookup functions that utilize the initialization helpers from the fc_els.h header. - Note: base header definitions for the ELS's don't populate the descriptor payloads. As such, lpfc creates it's own version of the structures, using the base definitions (mostly headers) and additionally declaring the descriptors that will complete the population of the ELS. Link: https://lore.kernel.org/r/20200210173155.547-3-jsmart2021@gmail.comSigned-off-by:
Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by:
James Smart <jsmart2021@gmail.com> Signed-off-by:
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James Smart authored
Update the FC headers for the RDF ELS and populate out the FPIN ELS and the Link integrity FPIN payload. RDF is used to register for diagnostic events. FPIN is how the fabric reports a diagnostic event. Specifically, this patch: - Adds the formal definition of TLV descriptors that are now used in a lot of the FC spec. The simplistic fc_fn_desc structure, basically no more than the tlv definition, is removed. - Small tlv helper functions are added as defines. - The list of known Descriptor tags (identifying the TLV) is expanded and a name initializer introduced. - The LSRI descriptor, returned in many new ELS response payloads is added. - The RDF ELS code is added, and the RDF request response structures added. - The FPIN els definition is corrected. - A full definition of a Link Integrity Notification descriptor is added, [mkp: rolled in kbuild warning fix] Link: https://lore.kernel.org/r/20200210173155.547-2-jsmart2021@gmail.comReported-by:
kbuild test robot <lkp@intel.com> Signed-off-by:
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- 13 Feb, 2020 12 commits
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John Garry authored
Module param scsi_use_blk_mq has not been referenced for some time, so zap it. Link: https://lore.kernel.org/r/1581355992-139274-1-git-send-email-john.garry@huawei.comSigned-off-by:
John Garry <john.garry@huawei.com> Signed-off-by:
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Geert Uytterhoeven authored
Restore alignment of the continuations of the ioremap() calls in zorro_esp_probe(). Join lines where all parameters can fit on a single line. Link: https://lore.kernel.org/r/20200212085138.10009-1-geert+renesas@glider.be Fixes: 4bdc0d67 ("remove ioremap_nocache and devm_ioremap_nocache") Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Can Guo authored
After enter hibern8, as UFS JEDEC ver 3.0 requires, a specific gating wait time is required before disable the device reference clock. If it is not specified, use the old delay. Link: https://lore.kernel.org/r/1581392451-28743-8-git-send-email-cang@codeaurora.orgReviewed-by:
Asutosh Das <asutoshd@codeaurora.org> Reviewed-by:
Hongwu Su <hongwus@codeaurora.org> Signed-off-by:
Can Guo <cang@codeaurora.org> Signed-off-by:
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Can Guo authored
In UFS version 3.0, a newly added attribute bRefClkGatingWaitTime defines the minimum time for which the reference clock is required by device during transition to LS-MODE or HIBERN8 state. Make this change to reflect the new requirement by adding delays before turning off the clock. Link: https://lore.kernel.org/r/1581392451-28743-7-git-send-email-cang@codeaurora.orgReviewed-by:
Bean Huo <beanhuo@micron.com> Reviewed-by:
Stanley Chu <stanley.chu@mediatek.com> Signed-off-by:
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Can Guo authored
The async version of ufshcd_hold(async == true), which is only called in queuecommand path as for now, is expected to work in atomic context, thus it should not sleep or schedule out. When it runs into the condition that clocks are ON but link is still in hibern8 state, it should bail out without flushing the clock ungate work. Fixes: f2a785ac ("scsi: ufshcd: Fix race between clk scaling and ungate work") Link: https://lore.kernel.org/r/1581392451-28743-6-git-send-email-cang@codeaurora.orgReviewed-by:
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Can Guo authored
The functionality of vendor specific ops should be handled properly in platform specific driver, but should not count on the UFS driver. Link: https://lore.kernel.org/r/1581392451-28743-5-git-send-email-cang@codeaurora.orgReviewed-by:
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Can Guo authored
The bus bandwidth voting is required to be done before the bus clocks are enabled, and the unvoting is required to be done only after the bus clocks are disabled. Link: https://lore.kernel.org/r/1581392451-28743-4-git-send-email-cang@codeaurora.orgReviewed-by:
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Asutosh Das authored
This sequence change is required to avoid dips in voltage during boot-up. Apparently, this dip is caused because in the original sequence, the regulators are initialized in lpm mode. And then when the load is set to high, and more current is drawn, than is allowed in lpm, the dip is seen. Link: https://lore.kernel.org/r/1581392451-28743-3-git-send-email-cang@codeaurora.orgReviewed-by:
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Sayali Lokhande authored
Exception event can be raised by the device when system suspend is in progress. This will result in unclocked register access in exception event handler as clocks will be turned off during suspend. This change makes sure to flush exception event handler work in suspend before disabling clocks to avoid unclocked register access issue. Link: https://lore.kernel.org/r/1581392451-28743-2-git-send-email-cang@codeaurora.orgReviewed-by:
Sayali Lokhande <sayalil@codeaurora.org> Signed-off-by:
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Can Guo authored
ADAPT is added specifically for HS Gear4 mode only. Select INITIAL ADAPT before power mode change to G4 and select NO ADAPT before switch to non-G4 modes. [mkp: fixed typo in header file] Link: https://lore.kernel.org/r/1581485910-8307-3-git-send-email-cang@codeaurora.orgSigned-off-by:
Avri Altman <avri.altman@wdc.com> Reviewed-by:
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Stanley Chu authored
Many vendors would like to disable host TX LCC during initialization flow. Introduce a common function for all users to make drivers easier to read and maintained. This patch does not change any functionality. Link: https://lore.kernel.org/r/20200207070357.17169-3-stanley.chu@mediatek.comReviewed-by:
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Stanley Chu authored
MediaTek UFS host requires TX LCC to be disabled on both host and device sides. This can be done by disabling host's local TX LCC before link startup. Correct TX LCC disabling timing in MediaTek UFS driver. Link: https://lore.kernel.org/r/20200207070357.17169-2-stanley.chu@mediatek.comReviewed-by:
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- 11 Feb, 2020 20 commits
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James Smart authored
Update copyrights to 2020 for files modified in the 12.6.0.4 patch set. Link: https://lore.kernel.org/r/20200128002312.16346-13-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
Update lpfc version to 12.6.0.4 Link: https://lore.kernel.org/r/20200128002312.16346-12-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
The current code does some odd +1 over maximum xri count checks and requires that the lun_queue_count can't be bigger than maximum xri count divided by 8. These items are bogus. Clean the code up to cap lun_queue_count to maximum xri count. Link: https://lore.kernel.org/r/20200128002312.16346-10-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
There was report of an odd "Fix me..." log message, which was tracked down to the lpfc_els_rcv_rps() routine. This was in handling of a very old and obsolete ELS - Read Port Status. The RPS ELS was defined in FC-LS-1, but deprecated in FC-LS-2, and removed from all later FC-LS revisions. It was replaced by the Read Diagnostic Parameters (RDP) ELS and the Link Error Status Block descriptor. There should be no support for the RSP ELS. Remove support from driver. Link: https://lore.kernel.org/r/20200128002312.16346-9-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
Coverity reported a memory corruption error for the fdmi attributes routines: CID 15768 [Memory Corruption] Out-of-bounds access on FDMI Sloppy coding of the fmdi structures. In both the lpfc_fdmi_attr_def and lpfc_fdmi_reg_port_list structures, a field was placed at the start of payload that may have variable content. The field was given an arbitrary type (uint32_t). The code then uses the field name to derive an address, which it used in things such as memset and memcpy. The memset sizes or memcpy lengths were larger than the arbitrary type, thus coverity reported an error. Fix by replacing the arbitrary fields with the real field structures describing the payload. Link: https://lore.kernel.org/r/20200128002312.16346-8-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
The following error is see from the compiler: drivers/scsi/lpfc/lpfc_init.c: In function ‘lpfc_cpuhp_get_eq’: drivers/scsi/lpfc/lpfc_init.c:12660:1: error: the frame size of 1032 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] The issue is due to allocating a cpumask on the stack. Fix by converting to a dynamical allocation of the cpu mask. Link: https://lore.kernel.org/r/20200128002312.16346-7-jsmart2021@gmail.comSigned-off-by: -
James Smart authored
When performing reset testing, the eq's list for related hwqs was getting corrupted. In cases where there is not a 1:1 eq to hwq, the eq is shared. The eq maintains a list of hwqs utilizing it in case of cpu offlining and polling. During the reset, the hwqs are being torn down so they can be recreated. The recreation was getting confused by seeing a non-null eq assignment on the eq and the eq list became corrupt. Correct by clearing the hdwq eq assignment when the hwq is cleaned up. Link: https://lore.kernel.org/r/20200128002312.16346-6-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
Adjust FC4 Types in FDMI settings The driver sets FDMI information registring ELS as a FC4 type. ELS is a fc3 type and should not be registered. Fix by removing ELS type bit when we register for FDMI Port attributes. Link: https://lore.kernel.org/r/20200128002312.16346-5-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
When driver is set to enable bb credit recovery, the switch displayed the setting as inactive. If the link bounces, it switches to Active. During link up processing, the driver currently does a MBX_READ_SPARAM followed by a MBX_CONFIG_LINK. These mbox commands are queued to be executed, one at a time and the completion is processed by the worker thread. Since the MBX_READ_SPARAM is done BEFORE the MBX_CONFIG_LINK, the BB_SC_N bit is never set the the returned values. BB Credit recovery status only gets set after the driver requests the feature in CONFIG_LINK, which is done after the link up. Thus the ordering of READ_SPARAM needs to follow the CONFIG_LINK. Fix by reordering so that READ_SPARAM is done after CONFIG_LINK. Added a HBA_DEFER_FLOGI flag so that any FLOGI handling waits until after the READ_SPARAM is done so that the proper BB credit value is set in the FLOGI payload. Fixes: 6bfb1620 ("scsi: lpfc: Fix configuration of BB credit recovery in service parameters") Cc: <stable@vger.kernel.org> # v5.4+ Link: https://lore.kernel.org/r/20200128002312.16346-4-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
If a call to lpfc_get_cmd_rsp_buf_per_hdwq returns NULL (memory allocation failure), a previously allocated lpfc_io_buf resource is leaked. Fix by releasing the lpfc_io_buf resource in the failure path. Fixes: d79c9e9d ("scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware.") Cc: <stable@vger.kernel.org> # v5.4+ Link: https://lore.kernel.org/r/20200128002312.16346-3-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
The driver is occasionally seeing the following SLI Port error, requiring reset and reinit: Port Status Event: ... error 1=0x52004a01, error 2=0x218 The failure means an RQ timeout. That is, the adapter had received asynchronous receive frames, ran out of buffer slots to place the frames, and the driver did not replenish the buffer slots before a timeout occurred. The driver should not be so slow in replenishing buffers that a timeout can occur. When the driver received all the frames of a sequence, it allocates an IOCB to put the frames in. In a situation where there was no IOCB available for the frame of a sequence, the RQ buffer corresponding to the first frame of the sequence was not returned to the FW. Eventually, with enough traffic encountering the situation, the timeout occurred. Fix by releasing the buffer back to firmware whenever there is no IOCB for the first frame. [mkp: typo] Link: https://lore.kernel.org/r/20200128002312.16346-2-jsmart2021@gmail.comSigned-off-by:
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Bart Van Assche authored
Document the locking assumptions this function relies on and also verify these locking assumptions at runtime. Cc: Quinn Tran <qutran@marvell.com> Cc: Daniel Wagner <dwagner@suse.de> Link: https://lore.kernel.org/r/20200123042345.23886-2-bvanassche@acm.orgAcked-by:
Himanshu Madhani <hmadhani@marvell.com> Reviewed-by:
Martin Wilck <mwilck@suse.com> Reviewed-by:
Roman Bolshakov <r.bolshakov@yadro.com> Signed-off-by:
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Ming Lei authored
Not in use anymore. Remove the flag. Cc: Sathya Prakash <sathya.prakash@broadcom.com> Cc: Chaitra P B <chaitra.basappa@broadcom.com> Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com> Cc: Kashyap Desai <kashyap.desai@broadcom.com> Cc: Sumit Saxena <sumit.saxena@broadcom.com> Cc: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Cc: Ewan D. Milne <emilne@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Bart Van Assche <bart.vanassche@wdc.com> Link: https://lore.kernel.org/r/20200119071432.18558-3-ming.lei@redhat.comReviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Ming Lei <ming.lei@redhat.com> Signed-off-by:
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Stanley Chu authored
In current UFS driver design, hba->uic_link_state will not be changed after link enters Hibern8 state by Auto-Hibern8 mechanism. In this case, reference clock gating will be skipped unless special handling is implemented in vendor's callbacks. Support reference clock gating during Auto-Hibern8 period in MediaTek Chipsets: If link state is already in Hibern8 while Auto-Hibern8 feature is enabled, gate reference clock in setup_clocks callback. Link: https://lore.kernel.org/r/20200129105251.12466-5-stanley.chu@mediatek.comReviewed-by:
Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by:
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Stanley Chu authored
Auto-Hibern8 may be disabled by some vendors or sysfs in runtime even if Auto-Hibern8 capability is supported by host. If Auto-Hibern8 capability is supported by host but not actually enabled, Auto-Hibern8 error shall not happen. To fix this, provide a way to detect if Auto-Hibern8 is actually enabled first, and bypass Auto-Hibern8 disabling case in ufshcd_is_auto_hibern8_error(). Fixes: 82174440 ("scsi: ufs: Add error-handling of Auto-Hibernate") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200129105251.12466-4-stanley.chu@mediatek.comReviewed-by:
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Stanley Chu authored
If system suspend or runtime suspend mode is configured as linkoff state, phy can be powered off and reference clock can be gated in MediaTek Chipsets. At the same time, remove redundant reference clock control in suspend and resume callbacks because such control can be well-handled in setup_clocks callback. Link: https://lore.kernel.org/r/20200129105251.12466-3-stanley.chu@mediatek.comReviewed-by:
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Stanley Chu authored
MediaTek Chipsets can enter proprietary UniPro low-power mode during suspend while link is in hibern8 state. Make sure leaving low-power mode before every link startup to prevent lockup in any possible error recovery path. At the same time, re-factor related funcitons to improve code readability. Link: https://lore.kernel.org/r/20200129105251.12466-2-stanley.chu@mediatek.comReviewed-by:
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Colin Ian King authored
There are two statements that are indented one level too deeply, remove the extraneous tabs. [mkp: fix typo spotted by Bart] Link: https://lore.kernel.org/r/20200126154757.42530-1-colin.king@canonical.comReviewed-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Bharath Ravi authored
Connection failure processing depends on a daemon being present to (at least) stop the connection and start recovery. This is a problem on a multipath scenario, where if the daemon failed for whatever reason, the SCSI path is never marked as down, multipath won't perform the failover and IO to the device will be forever waiting for that connection to come back. This patch performs the connection failure entirely inside the kernel. This way, the failover can happen and pending IO can continue even if the daemon is dead. Once the daemon comes alive again, it can execute recovery procedures if applicable. Cc: Mike Christie <mchristi@redhat.com> Cc: Lee Duncan <LDuncan@suse.com> Cc: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20200125061925.191601-1-krisman@collabora.comCo-developed-by:
Dave Clausen <dclausen@google.com> Co-developed-by:
Nick Black <nlb@google.com> Co-developed-by:
Vaibhav Nagarnaik <vnagarnaik@google.com> Co-developed-by:
Anatol Pomazau <anatol@google.com> Co-developed-by:
Tahsin Erdogan <tahsin@google.com> Co-developed-by:
Frank Mayhar <fmayhar@google.com> Co-developed-by:
Junho Ryu <jayr@google.com> Co-developed-by:
Khazhismel Kumykov <khazhy@google.com> Reviewed-by:
Gabriel Krisman Bertazi <krisman@collabora.com> Reviewed-by:
Lee Duncan <lduncan@suse.com> Signed-off-by:
Bharath Ravi <rbharath@google.com> Signed-off-by:
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Bart Van Assche authored
Reduce code duplication by introducing the tcm_qla2xxx_{get,rel}_cmd() functions. Introduce these functions in the tcm_qla2xxx.c source files such that the qla_target.c source file becomes independent of the SCSI target core header files. This patch fixes a bug, namely by ensuring that qlt_alloc_qfull_cmd() sets cmd->se_cmd.map_tag. Cc: Himanshu Madhani <hmadhani@marvell.com> Link: https://lore.kernel.org/r/20200103192719.205158-1-bvanassche@acm.orgAcked-by:
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- 10 Feb, 2020 2 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds authored
Pull more Kbuild updates from Masahiro Yamada: - fix randconfig to generate a sane .config - rename hostprogs-y / always to hostprogs / always-y, which are more natual syntax. - optimize scripts/kallsyms - fix yes2modconfig and mod2yesconfig - make multiple directory targets ('make foo/ bar/') work * tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: make multiple directory targets work kconfig: Invalidate all symbols after changing to y or m. kallsyms: fix type of kallsyms_token_table[] scripts/kallsyms: change table to store (strcut sym_entry *) scripts/kallsyms: rename local variables in read_symbol() kbuild: rename hostprogs-y/always to hostprogs/always-y kbuild: fix the document to use extra-y for vmlinux.lds kconfig: fix broken dependency in randconfig-generated .config
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