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2022-08-13Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2-9/+15
Pull more SCSI updates from James Bottomley: "Mostly small bug fixes and trivial updates. The major new core update is a change to the way device, target and host reference counting is done to try to make it more robust (this change has soaked for a while to try to winkle out any bugs)" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: pm8001: Fix typo 'the the' in comment scsi: megaraid_sas: Remove redundant variable cmd_type scsi: FlashPoint: Remove redundant variable bm_int_st scsi: zfcp: Fix missing auto port scan and thus missing target ports scsi: core: Call blk_mq_free_tag_set() earlier scsi: core: Simplify LLD module reference counting scsi: core: Make sure that hosts outlive targets scsi: core: Make sure that targets outlive devices scsi: ufs: ufs-pci: Correct check for RESET DSM scsi: target: core: De-RCU of se_lun and se_lun acl scsi: target: core: Fix race during ACL removal scsi: ufs: core: Correct ufshcd_shutdown() flow scsi: ufs: core: Increase the maximum data buffer size scsi: lpfc: Check the return value of alloc_workqueue()
2022-08-04Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds13-136/+1007
Pull SCSI updates from James Bottomley: "Updates to the usual drivers (ufs, qla2xx, target, lpfc, smartpqi, mpi3mr). The main driver change that might cause issues on down the road is the conversion of some of our oldest surviving drivers to the DMA API (should only affect m68k). The only major core change is the rework of async resume; the rest are either completely trivial or for updating deprecated APIs" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (195 commits) scsi: target: Remove XDWRITEREAD emulated support scsi: megaraid: Remove the static variable initialisation scsi: ch: Do not initialise statics to 0 scsi: ufs: core: Fix spelling mistake "Cannnot" -> "Cannot" scsi: target: iscsi: Do not require target authentication scsi: target: iscsi: Allow AuthMethod=None scsi: target: iscsi: Support base64 in CHAP scsi: target: iscsi: Add support for extended CDB AHS scsi: ufs: dt-bindings: Add SC8280XP binding scsi: target: iscsi: Fix clang -Wformat warnings scsi: ufs: core: Read device property for ref clock scsi: libsas: Resume SAS host for phy reset or enable via sysfs scsi: hisi_sas: Modify v3 HW SATA completion error processing scsi: hisi_sas: Relocate DMA unmap of SMP task scsi: hisi_sas: Remove unnecessary variable to hold DMA map elements scsi: hisi_sas: Call hisi_sas_slave_configure() from slave_configure_v3_hw() scsi: mpi3mr: Delete a stray tab scsi: mpi3mr: Unlock on error path scsi: mpi3mr: Reduce VD queue depth on detecting throttling scsi: mpi3mr: Resource Based Metering ...
2022-08-02Merge tag 'for-5.20/block-2022-07-29' of git://git.kernel.dk/linux-blockLinus Torvalds2-6/+5
Pull block updates from Jens Axboe: - Improve the type checking of request flags (Bart) - Ensure queue mapping for a single queues always picks the right queue (Bart) - Sanitize the io priority handling (Jan) - rq-qos race fix (Jinke) - Reserved tags handling improvements (John) - Separate memory alignment from file/disk offset aligment for O_DIRECT (Keith) - Add new ublk driver, userspace block driver using io_uring for communication with the userspace backend (Ming) - Use try_cmpxchg() to cleanup the code in various spots (Uros) - Finally remove bdevname() (Christoph) - Clean up the zoned device handling (Christoph) - Clean up independent access range support (Christoph) - Clean up and improve block sysfs handling (Christoph) - Clean up and improve teardown of block devices. This turns the usual two step process into something that is simpler to implement and handle in block drivers (Christoph) - Clean up chunk size handling (Christoph) - Misc cleanups and fixes (Bart, Bo, Dan, GuoYong, Jason, Keith, Liu, Ming, Sebastian, Yang, Ying) * tag 'for-5.20/block-2022-07-29' of git://git.kernel.dk/linux-block: (178 commits) ublk_drv: fix double shift bug ublk_drv: make sure that correct flags(features) returned to userspace ublk_drv: fix error handling of ublk_add_dev ublk_drv: fix lockdep warning block: remove __blk_get_queue block: call blk_mq_exit_queue from disk_release for never added disks blk-mq: fix error handling in __blk_mq_alloc_disk ublk: defer disk allocation ublk: rewrite ublk_ctrl_get_queue_affinity to not rely on hctx->cpumask ublk: fold __ublk_create_dev into ublk_ctrl_add_dev ublk: cleanup ublk_ctrl_uring_cmd ublk: simplify ublk_ch_open and ublk_ch_release ublk: remove the empty open and release block device operations ublk: remove UBLK_IO_F_PREFLUSH ublk: add a MAINTAINERS entry block: don't allow the same type rq_qos add more than once mmc: fix disk/queue leak in case of adding disk failure ublk_drv: fix an IS_ERR() vs NULL check ublk: remove UBLK_IO_F_INTEGRITY ublk_drv: remove unneeded semicolon ...
2022-08-01scsi: ufs: ufs-pci: Correct check for RESET DSMDaniil Lunev1-4/+13
dsm_fns is a bitmap, and it is 0-indexed according to the check in __intel_dsm function. But common initialization was checking it as if it was 1-indexed. This patch corrects the discrepancy. This change won't break any existing calls to the function, since before the change both bits 0 and 1 were checked and needed to be set. Link: https://lore.kernel.org/r/20220728111748.v3.1.I22460c4f4a9ccf2c96c3f9bb392b409926d80b2f@changeid Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Daniil Lunev <dlunev@chromium.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-08-01scsi: ufs: core: Correct ufshcd_shutdown() flowPeter Wang1-5/+1
After ufshcd_wl_shutdown() set device power off and link off, ufshcd_shutdown() could turn off clock/power. Also remove pm_runtime_get_sync. The reason why it is safe to remove pm_runtime_get_sync() is because: - ufshcd_wl_shutdown() -> pm_runtime_get_sync() will resume hba->dev too. - device resume(turn on clk/power) is not required, even if device is in RPM_SUSPENDED. Link: https://lore.kernel.org/r/20220727030526.31022-1-peter.wang@mediatek.com Fixes: b294ff3e3449 ("scsi: ufs: core: Enable power management for wlun") Cc: <stable@vger.kernel.org> # 5.15.x Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-08-01scsi: ufs: core: Increase the maximum data buffer sizeBart Van Assche1-0/+1
Measurements for one particular UFS controller + UFS device show a 25% higher read bandwidth if the maximum data buffer size is increased from 512 KiB to 1 MiB. Hence increase the maximum size of the data buffer associated with a single request from SCSI_DEFAULT_MAX_SECTORS (1024) * 512 bytes = 512 KiB to 1 MiB. Notes: - The maximum data buffer size supported by the UFSHCI specification is 65535 * 256 KiB or about 16 GiB. - The maximum data buffer size for READ(10) commands is 65535 logical blocks. To transfer more than 65535 * 4096 bytes = 255 MiB with a single SCSI command, the READ(16) command is required. Support for READ(16) is optional in the UFS 3.1 and UFS 4.0 standards. Link: https://lore.kernel.org/r/20220726225232.1362251-1-bvanassche@acm.org Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Avri Altman <avri.altman@wdc.com> Cc: Bean Huo <beanhuo@micron.com> Cc: Stanley Chu <stanley.chu@mediatek.com> Tested-by: Avri Altman <avri.altman@wdc.com> Acked-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-26scsi: ufs: core: Fix spelling mistake "Cannnot" -> "Cannot"Colin Ian King1-1/+1
There is a spelling mistake in a dev_dbg message. Fix it. Link: https://lore.kernel.org/r/20220719110649.759821-1-colin.i.king@gmail.com Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-26scsi: ufs: core: Fix a race condition related to device managementBart Van Assche1-18/+40
If a device management command completion happens after wait_for_completion_timeout() times out and before ufshcd_clear_cmds() is called, then the completion code may crash on the complete() call in __ufshcd_transfer_req_compl(). Fix the following crash: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Call trace: complete+0x64/0x178 __ufshcd_transfer_req_compl+0x30c/0x9c0 ufshcd_poll+0xf0/0x208 ufshcd_sl_intr+0xb8/0xf0 ufshcd_intr+0x168/0x2f4 __handle_irq_event_percpu+0xa0/0x30c handle_irq_event+0x84/0x178 handle_fasteoi_irq+0x150/0x2e8 __handle_domain_irq+0x114/0x1e4 gic_handle_irq.31846+0x58/0x300 el1_irq+0xe4/0x1c0 efi_header_end+0x110/0x680 __irq_exit_rcu+0x108/0x124 __handle_domain_irq+0x118/0x1e4 gic_handle_irq.31846+0x58/0x300 el1_irq+0xe4/0x1c0 cpuidle_enter_state+0x3ac/0x8c4 do_idle+0x2fc/0x55c cpu_startup_entry+0x84/0x90 kernel_init+0x0/0x310 start_kernel+0x0/0x608 start_kernel+0x4ec/0x608 Link: https://lore.kernel.org/r/20220720170228.1598842-1-bvanassche@acm.org Fixes: 5a0b0cb9bee7 ("[SCSI] ufs: Add support for sending NOP OUT UPIU") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Avri Altman <avri.altman@wdc.com> Cc: Bean Huo <beanhuo@micron.com> Cc: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-26scsi: ufs: host: Hold reference returned by of_parse_phandle()Liang He1-2/+13
In ufshcd_populate_vreg(), we should hold the reference returned by of_parse_phandle() and then use it to call of_node_put() for refcount balance. Link: https://lore.kernel.org/r/20220719071529.1081166-1-windhl@126.com Fixes: aa4976130934 ("ufs: Add regulator enable support") Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-18scsi: ufs: core: Read device property for ref clockDaniil Lunev1-0/+16
UFS storage devices require bRefClkFreq attribute to be set to operate correctly at high speed mode. The necessary value is determined by what the SoC / board supports. The standard doesn't specify a method to query the value, so the information needs to be fed in separately. DT information feeds into setting up the clock framework, so platforms using DT can get the UFS reference clock frequency from the clock framework. A special node "ref_clk" from the clock array for the UFS controller node is used as the source for the information. On the platforms that do not use DT (e.g. Intel), the alternative mechanism to feed the intended reference clock frequency is necessary. Specifying the necessary information in DSD of the UFS controller ACPI node is an alternative mechanism proposed in this patch. Those can be accessed via firmware property facility in the kernel and in many ways simillar to querying properties defined in DT. This patch introduces a small helper function to query a predetermined ACPI supplied property of the UFS controller, and uses it to attempt retrieving reference clock value, unless that was already done by the clock infrastructure. Link: https://lore.kernel.org/r/20220715210230.1.I365d113d275117dee8fd055ce4fc7e6aebd0bce9@changeid Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Daniil Lunev <dlunev@chromium.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-14scsi/ufs: Rename a 'dir' argument into 'op'Bart Van Assche1-2/+2
Improve consistency of the kernel code by renaming a request operation argument from 'dir' into 'op'. Reviewed-by: Avri Altman <avri.altman@wdc.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20220714180729.1065367-44-bvanassche@acm.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-14treewide: Rename enum req_opf into enum req_opBart Van Assche1-3/+2
The type name enum req_opf is misleading since it suggests that values of this type include both an operation type and flags. Since values of this type represent an operation only, change the type name into enum req_op. Convert the enum req_op documentation into kernel-doc format. Move a few definitions such that the enum req_op documentation occurs just above the enum req_op definition. The name "req_opf" was introduced by commit ef295ecf090d ("block: better op and flags encoding"). Cc: Christoph Hellwig <hch@lst.de> Cc: Ming Lei <ming.lei@redhat.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Damien Le Moal <damien.lemoal@wdc.com> Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20220714180729.1065367-2-bvanassche@acm.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-13scsi: ufs: core: Fix missing clk change notification on host resetPo-Wen Kao1-1/+1
In ufshcd_host_reset_and_restore(), ufshcd_set_clk_freq() is called to scale clock rate. However, this did not call vops->clk_scale_notify() to inform platform driver of clock change. Call ufshcd_scale_clks() instead so that clock change can be properly handled. Link: https://lore.kernel.org/r/20220711144224.17916-2-powen.kao@mediatek.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-13scsi: ufs: core: Drop loglevel of WriteBoost messageBjorn Andersson1-1/+1
Commit '3b5f3c0d0548 ("scsi: ufs: core: Tidy up WB configuration code")' changed the log level of the write boost enable/disable notification from debug to info. This results in a lot of noise in the kernel log during normal operation. Drop it back to debug level to avoid this. Link: https://lore.kernel.org/r/20220709000027.3929970-1-bjorn.andersson@linaro.org Fixes: 3b5f3c0d0548 ("scsi: ufs: core: Tidy up WB configuration code") Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Acked-by: Bean Huo <beanhuo@micron.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-13scsi: ufs: core: Remove UIC_HIBERN8_ENTER_RETRIESKeoseong Park1-3/+0
Commit 4db7a2360597 ("scsi: ufs: Fix concurrency of error handler and other error recovery paths") removed all callers of UIC_HIBERN8_ENTER_RETRIES. Hence also remove the macro itself. Link: https://lore.kernel.org/r/20220708052006epcms2p2d1129dbf95fd77f46906200ccb0a9ccd@epcms2p2 Reviewed-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Keoseong Park <keosung.park@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-13scsi: ufs: ufs-exynos: Change ufs phy control sequenceChanho Park1-7/+10
Since commit 1599069a62c6 ("phy: core: Warn when phy_power_on is called before phy_init"), the following warning has been reported: phy_power_on was called before phy_init To address this, we need to remove phy_power_on from exynos_ufs_phy_init() and move it after phy_init. phy_power_off and phy_exit are also necessary in exynos_ufs_remove(). Link: https://lore.kernel.org/r/20220706020255.151177-4-chanho61.park@samsung.com Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-07scsi: ufs: Skip last hci reset to get valid register valuesJunwoo Lee1-1/+1
Once the host link startup fails 3 times, all host registers are reset to default values except in ufshcd_hba_enable(). The ufs host controller is disabled and enabled in ufshcd_hba_enable(). Consequently we need to skip last hci reset to get valid host register values. e.g. [ 1.898026] [2: kworker/u16:2: 211] ufs: link startup failed 1 [ 1.898133] [2: kworker/u16:2: 211] host_regs: 00000000: 1383ff1f 00000000 00000300 00000000 [ 1.898141] [2: kworker/u16:2: 211] host_regs: 00000010: 00000106 000001ce 00000000 00000000 [ 1.898148] [2: kworker/u16:2: 211] host_regs: 00000020: 00000000 00000470 00000000 00000000 [ 1.898155] [2: kworker/u16:2: 211] host_regs: 00000030: 00000008 00000003 00000000 00000000 [ 1.898163] [2: kworker/u16:2: 211] host_regs: 00000040: 00000000 00000000 00000000 00000000 [ 1.898171] [2: kworker/u16:2: 211] host_regs: 00000050: 00000000 00000000 00000000 00000000 [ 1.898177] [2: kworker/u16:2: 211] host_regs: 00000060: 00000000 00000000 00000000 00000000 [ 1.898186] [2: kworker/u16:2: 211] host_regs: 00000070: 00000000 00000000 00000000 00000000 [ 1.898194] [2: kworker/u16:2: 211] host_regs: 00000080: 00000000 00000000 00000000 00000000 [ 1.898201] [2: kworker/u16:2: 211] host_regs: 00000090: 00000000 00000000 00000000 00000000 Link: https://lore.kernel.org/r/20220705083538.15143-1-sh043.lee@samsung.com Reviewed-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Junwoo Lee <junwoo80.lee@samsung.com> Signed-off-by: Seunghui Lee <sh043.lee@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-07scsi: ufs: ufs-pci: Enable WriteBooster capability on ADLDaniil Lunev1-0/+1
Sets the WriteBooster capability flag when ADL's UFS controller is used. Link: https://lore.kernel.org/r/20220705165316.v2.1.Ib5ebec952d9a59f5c69c89b694777f517d22466d@changeid Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Daniil Lunev <dlunev@chromium.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-07-07Merge branch '5.19/scsi-fixes' into 5.20/scsi-stagingMartin K. Petersen1-28/+48
Bring in fixes to resolve a merge conflict in the lpfc driver update. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-28block: simplify disk shutdownChristoph Hellwig1-2/+2
Set the queue dying flag and call blk_mq_exit_queue from del_gendisk for all disks that do not have separately allocated queues, and thus remove the need to call blk_cleanup_queue for them. Rename blk_cleanup_disk to blk_mq_destroy_queue to make it clear that this function is intended only for separately allocated blk-mq queues. This saves an extra queue freeze for devices without a separately allocated queue. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20220619060552.1850436-6-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-27scsi: ufs: ufs-qcom: Remove unneeded codeChanWoo Lee1-23/+0
Checks information about tx_lanes, but is not used. Since commit 1e1e465c6d23 ("scsi/ufs: qcom: Remove ufs_qcom_phy_*() calls from host"), tx_lanes is deprecated. As a result, ufs_qcom_link_startup_notify -> POST_CHANGE action does nothing. If it is not going to be updated, it can be removed. Link: https://lore.kernel.org/r/20220627235545.16943-1-cw9316.lee@samsung.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: ChanWoo Lee <cw9316.lee@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Fix invalid access to vccqxAlice Chao1-0/+1
NULL pointer access issue was found for the regulator released by ufs_mtk_vreg_fix_vccq(). Simply fix this issue by clearing the released vreg pointer in ufs_hba struct. Link: https://lore.kernel.org/r/20220623035052.18802-9-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Alice Chao <alice.chao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Support performance boostingPeter Wang2-8/+29
Add pm-qos request to support performance boosting in MediaTek UFS platforms. At the same time, adjust the order of function calls to be symmetric during the low-power control flow. Link: https://lore.kernel.org/r/20220623035052.18802-8-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Support host power controlPo-Wen Kao2-0/+17
Add interfaces for controlling the host power to optimize the power consumption in MediaTek UFS platforms. Link: https://lore.kernel.org/r/20220623035052.18802-7-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Disable reset confirm feature by UniProPo-Wen Kao1-0/+5
In MediaTek UFS platforms, UniPro will not return reset confirm if it is in POWERDOWN state thus hang issue may happen while disabling UFSHCI. Simply disable this feature before UniPro leaves POWERDOWN state. Link: https://lore.kernel.org/r/20220623035052.18802-6-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Add stage information for ref-clk controlPeter Wang2-6/+7
Add "PRE_CHANGE" and "POST_CHANGE" information for ref-clk control to precisely configure the low-power state of the parent of ref-clk. Link: https://lore.kernel.org/r/20220623035052.18802-5-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Prevent host hang by setting CLK_CG earlyPeter Wang2-0/+9
Some UFSHCI hosts in MediaTek UFS platform need workaround to prevent host hang issue by setting CLK_CG bit before host is enabled. This operation shall have no side effect on those platforms which do not support this bit. Link: https://lore.kernel.org/r/20220623035052.18802-4-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Always add delays for VCC operationsPeter Wang1-2/+3
MediaTek decides to always add delays before and after VCC is turned-off. Link: https://lore.kernel.org/r/20220623035052.18802-3-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Fix build warningsStanley Chu1-4/+4
Fix build warnings: 1. ../drivers/ufs/host/ufs-mediatek.c:1375:5: error: no previous prototype for function 'ufs_mtk_system_suspend' [-Werror,-Wmissing-prototypes] int ufs_mtk_system_suspend(struct device *dev) ^ ../drivers/ufs/host/ufs-mediatek.c:1375:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ufs_mtk_system_suspend(struct device *dev) ^ static 2. ../drivers/ufs/host/ufs-mediatek.c:702:50: error: format specifies type 'unsigned long' but the argument has type 'int' [-Werror,-Wformat] snprintf(vcc_name, MAX_VCC_NAME, "vcc-ufs%lu", ver); ~~~ ^~~ %d Link: https://lore.kernel.org/r/20220623035052.18802-2-stanley.chu@mediatek.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufshcd: Constify pointed dataKrzysztof Kozlowski2-23/+25
For code safety, constify arrays and pointers to data which is not modified. Link: https://lore.kernel.org/r/20220623102432.108059-4-krzysztof.kozlowski@linaro.org Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufshcd-pltfrm: Constify pointed dataKrzysztof Kozlowski2-7/+7
For code safety, constify pointers to data which is not modified. Link: https://lore.kernel.org/r/20220623102432.108059-3-krzysztof.kozlowski@linaro.org Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-21scsi: ufs: core: Fix typos in error messagesWolfram Sang1-2/+2
Should be "retries" instead of "retires". Link: https://lore.kernel.org/r/20220621144653.62630-1-wsa+renesas@sang-engineering.com Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-21scsi: ufs: ufs-mediatek: Fix build error and type mismatchRen Zhijie1-1/+3
If CONFIG_PM_SLEEP is not set. make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-, will fail: drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_vreg_fix_vcc’: drivers/ufs/host/ufs-mediatek.c:688:46: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 4 has type ‘long unsigned int’ [-Wformat=] snprintf(vcc_name, MAX_VCC_NAME, "vcc-opt%u", res.a1); ~^ ~~~~~~ %lu drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_system_suspend’: drivers/ufs/host/ufs-mediatek.c:1371:8: error: implicit declaration of function ‘ufshcd_system_suspend’; did you mean ‘ufs_mtk_system_suspend’? [-Werror=implicit-function-declaration] ret = ufshcd_system_suspend(dev); ^~~~~~~~~~~~~~~~~~~~~ ufs_mtk_system_suspend drivers/ufs/host/ufs-mediatek.c: In function ‘ufs_mtk_system_resume’: drivers/ufs/host/ufs-mediatek.c:1386:9: error: implicit declaration of function ‘ufshcd_system_resume’; did you mean ‘ufs_mtk_system_resume’? [-Werror=implicit-function-declaration] return ufshcd_system_resume(dev); ^~~~~~~~~~~~~~~~~~~~ ufs_mtk_system_resume cc1: some warnings being treated as errors The declaration of func "ufshcd_system_suspend()" depends on CONFIG_PM_SLEEP, so the function wrapper ufs_mtk_system_suspend() should wrapped by CONFIG_PM_SLEEP too. Link: https://lore.kernel.org/r/20220619115432.205504-1-renzhijie2@huawei.com Fixes: 3fd23b8dfb54 ("scsi: ufs: ufs-mediatek: Fix the timing of configuring device regulators") Reported-by: Hulk Robot <hulkci@huawei.com> Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Ren Zhijie <renzhijie2@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Disable unused VCCQx power railsStanley Chu1-0/+24
Some MediaTek UFS platforms support different VCCQx power rails, for example, both 1.2v and 1.8v VCCQx, in a single kernel image. To optimize the system power consumption, provide a way to disable and release the unused power rail during the device probing. Link: https://lore.kernel.org/r/20220616053725.5681-12-stanley.chu@mediatek.com Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Support multiple VCC sourcesStanley Chu2-1/+59
Support multiple VCC sources in MediaTek UFS platforms. Two options are provided and distinguished by specific device tree attributes as below examples, [Option 1: By numbering] mediatek,ufs-vcc-by-num; vcc-opt1-supply = <&mt6373_vbuck4_ufs>; vcc-opt2-supply = <&mt6363_vemc>; [Option 2: By UFS version] mediatek,ufs-vcc-by-ver; vcc-ufs3-supply = <&mt6373_vbuck4_ufs>; Link: https://lore.kernel.org/r/20220616053725.5681-11-stanley.chu@mediatek.com Signed-off-by: Alice Chao <alice.chao@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: Export regulator functionsStanley Chu3-3/+7
Export below regulator functions to allow vendors to customize regulator configuration in their own platforms. int ufshcd_populate_vreg(struct device *dev, const char *name, struct ufs_vreg **out_vreg); int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg); Link: https://lore.kernel.org/r/20220616053725.5681-10-stanley.chu@mediatek.com Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Support low-power mode for parents of VCCQxStanley Chu2-13/+37
Provide the facility to configure parents of VCCQx power rails as low-power or full-power mode in MediaTek UFS platforms. Link: https://lore.kernel.org/r/20220616053725.5681-9-stanley.chu@mediatek.com Signed-off-by: Alice Chao <alice.chao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Support flexible parameters for SMC callsStanley Chu2-16/+39
Provide flexible number of parameters for UFS SMC calls to be used in a subsequent commit. Link: https://lore.kernel.org/r/20220616053725.5681-8-stanley.chu@mediatek.com Signed-off-by: Alice Chao <alice.chao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Support low-power mode for VCCQPeter Wang1-6/+13
Allow VCCQ to enter low-power mode, and also remove the restriction of VCC because VCCQ/VCCQ2 can be changed to low-power mode even if VCC stays on while the device is not in active power mode. Link: https://lore.kernel.org/r/20220616053725.5681-7-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Prevent device regulators setting LPM incorrectlyPo-Wen Kao1-2/+10
Device regulatrs are allowed to enter low-power mode if neither device is not in active mode, nor VCC does not keep on. Fix this by adding conditions before LPM decision. Link: https://lore.kernel.org/r/20220616053725.5681-6-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Fix the timing of configuring device regulatorsPo-Wen Kao1-5/+53
Currently the LPM configurations of device regulators may not work since VCC is not disabled yet while ufs_mtk_vreg_set_lpm() is executed. Fix this by changing the timing of invoking ufs_mtk_vreg_set_lpm(). Link: https://lore.kernel.org/r/20220616053725.5681-5-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Introduce workaround for power mode changeCC Chou2-2/+59
Some MediaTek SoC chips need special flow for power mode change, especially for chips supporting HS-G5. Enable the workaround by setting the host-specific capability. Link: https://lore.kernel.org/r/20220616053725.5681-4-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: CC Chou <cc.chou@mediatek.com> Signed-off-by: Eddie Huang <eddie.huang@mediatek.com> Signed-off-by: Dennis Yu <tun-yu.yu@mediatek.com> Signed-off-by: Peter Wang <peter.want@medaitek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: Fix ADAPT logic for HS-G5Stanley Chu1-1/+1
ADAPT now is added not only for HS Gear4 mode but also higher gears. Fix the logic for higher gears. Link: https://lore.kernel.org/r/20220616053725.5681-3-stanley.chu@mediatek.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: Export ufshcd_uic_change_pwr_mode()Stanley Chu1-1/+2
Export ufshcd_uic_change_pwr_mode() to allow vendors to use it for SoC-specific power mode change design limitations. Link: https://lore.kernel.org/r/20220616053725.5681-2-stanley.chu@mediatek.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: host: ufs-exynos: Use already existing definitionAlim Akhtar1-2/+3
UFS core already uses RX_MIN_ACTIVATETIME_CAPABILITY macro, let's use the same in driver as well instead of having a different macro name for the same offset. Link: https://lore.kernel.org/r/20220615121204.16642-2-alim.akhtar@samsung.com Reviewed-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: host: ufs-exynos: Remove unused definesAlim Akhtar1-10/+0
Remove #defines as those are not used anywhere in the driver file. Link: https://lore.kernel.org/r/20220615121204.16642-1-alim.akhtar@samsung.com Reviewed-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: Fix a race between the interrupt handler and the reset handlerBart Van Assche1-9/+19
Prevent that both the interrupt handler and the reset handler try to complete a request at the same time. This patch is the result of an analysis of the following crash: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000120 CPU: 0 PID: 0 Comm: swapper/0 Tainted: G OE 5.10.107-android13-4-00051-g1e48e8970cca-ab8664745 #1 pc : ufshcd_release_scsi_cmd+0x30/0x46c lr : __ufshcd_transfer_req_compl+0x4fc/0x9c0 Call trace: ufshcd_release_scsi_cmd+0x30/0x46c __ufshcd_transfer_req_compl+0x4fc/0x9c0 ufshcd_poll+0xf0/0x208 ufshcd_sl_intr+0xb8/0xf0 ufshcd_intr+0x168/0x2f4 __handle_irq_event_percpu+0xa0/0x30c handle_irq_event+0x84/0x178 handle_fasteoi_irq+0x150/0x2e8 __handle_domain_irq+0x114/0x1e4 gic_handle_irq.31846+0x58/0x300 el1_irq+0xe4/0x1c0 cpuidle_enter_state+0x3ac/0x8c4 do_idle+0x2fc/0x55c cpu_startup_entry+0x84/0x90 kernel_init+0x0/0x310 start_kernel+0x0/0x608 start_kernel+0x4ec/0x608 Link: https://lore.kernel.org/r/20220613214442.212466-4-bvanassche@acm.org Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: Support clearing multiple commands at onceBart Van Assche1-14/+28
Modify ufshcd_clear_cmd() such that it supports clearing multiple commands at once instead of one command at a time. This change will be used in a later patch to reduce the time spent in the reset handler. Link: https://lore.kernel.org/r/20220613214442.212466-3-bvanassche@acm.org Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: Simplify ufshcd_clear_cmd()Bart Van Assche1-6/+2
Remove the local variable 'err'. This patch does not change any functionality. Link: https://lore.kernel.org/r/20220613214442.212466-2-bvanassche@acm.org Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: exynos: Constify driver dataKrzysztof Kozlowski1-5/+4
Constify the drv data because it should not be modified (used by multiple devices). Link: https://lore.kernel.org/r/20220613101429.114449-1-krzysztof.kozlowski@linaro.org Reviewed-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-13 13:23:38 +0000