diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-06-30 21:57:07 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-06-30 21:57:07 +0300 |
commit | ca7ce08d6a063e0ccb91dc57f9bc213120d0d1a7 (patch) | |
tree | 99ce2811fdf52befc76d2cad95b16040423ecd10 /drivers/ata/libata-core.c | |
parent | 1546cd4bfda49fd6faad47eb30f4e744e2d79a8f (diff) | |
parent | af92c02fb2090692f4920ea4b74870940260cf49 (diff) | |
download | linux-ca7ce08d6a063e0ccb91dc57f9bc213120d0d1a7.tar.xz |
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (ufs, pm80xx, libata-scsi, smartpqi,
lpfc, qla2xxx).
We have a couple of major core changes impacting other systems:
- Command Duration Limits, which spills into block and ATA
- block level Persistent Reservation Operations, which touches block,
nvme, target and dm
Both of these are added with merge commits containing a cover letter
explaining what's going on"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (187 commits)
scsi: core: Improve warning message in scsi_device_block()
scsi: core: Replace scsi_target_block() with scsi_block_targets()
scsi: core: Don't wait for quiesce in scsi_device_block()
scsi: core: Don't wait for quiesce in scsi_stop_queue()
scsi: core: Merge scsi_internal_device_block() and device_block()
scsi: sg: Increase number of devices
scsi: bsg: Increase number of devices
scsi: qla2xxx: Remove unused nvme_ls_waitq wait queue
scsi: ufs: ufs-pci: Add support for Intel Arrow Lake
scsi: sd: sd_zbc: Use PAGE_SECTORS_SHIFT
scsi: ufs: wb: Add explicit flush_threshold sysfs attribute
scsi: ufs: ufs-qcom: Switch to the new ICE API
scsi: ufs: dt-bindings: qcom: Add ICE phandle
scsi: ufs: ufs-mediatek: Set UFSHCD_QUIRK_MCQ_BROKEN_RTC quirk
scsi: ufs: ufs-mediatek: Set UFSHCD_QUIRK_MCQ_BROKEN_INTR quirk
scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_RTC
scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_INTR
scsi: ufs: core: Remove dedicated hwq for dev command
scsi: ufs: core: mcq: Fix the incorrect OCS value for the device command
scsi: ufs: dt-bindings: samsung,exynos: Drop unneeded quotes
...
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r-- | drivers/ata/libata-core.c | 204 |
1 files changed, 200 insertions, 4 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 0e4c2da50821..d37ab6087f2f 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -665,12 +665,33 @@ u64 ata_tf_read_block(const struct ata_taskfile *tf, struct ata_device *dev) return block; } +/* + * Set a taskfile command duration limit index. + */ +static inline void ata_set_tf_cdl(struct ata_queued_cmd *qc, int cdl) +{ + struct ata_taskfile *tf = &qc->tf; + + if (tf->protocol == ATA_PROT_NCQ) + tf->auxiliary |= cdl; + else + tf->feature |= cdl; + + /* + * Mark this command as having a CDL and request the result + * task file so that we can inspect the sense data available + * bit on completion. + */ + qc->flags |= ATA_QCFLAG_HAS_CDL | ATA_QCFLAG_RESULT_TF; +} + /** * ata_build_rw_tf - Build ATA taskfile for given read/write request * @qc: Metadata associated with the taskfile to build * @block: Block address * @n_block: Number of blocks * @tf_flags: RW/FUA etc... + * @cdl: Command duration limit index * @class: IO priority class * * LOCKING: @@ -685,7 +706,7 @@ u64 ata_tf_read_block(const struct ata_taskfile *tf, struct ata_device *dev) * -EINVAL if the request is invalid. */ int ata_build_rw_tf(struct ata_queued_cmd *qc, u64 block, u32 n_block, - unsigned int tf_flags, int class) + unsigned int tf_flags, int cdl, int class) { struct ata_taskfile *tf = &qc->tf; struct ata_device *dev = qc->dev; @@ -724,11 +745,20 @@ int ata_build_rw_tf(struct ata_queued_cmd *qc, u64 block, u32 n_block, if (dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLED && class == IOPRIO_CLASS_RT) tf->hob_nsect |= ATA_PRIO_HIGH << ATA_SHIFT_PRIO; + + if ((dev->flags & ATA_DFLAG_CDL_ENABLED) && cdl) + ata_set_tf_cdl(qc, cdl); + } else if (dev->flags & ATA_DFLAG_LBA) { tf->flags |= ATA_TFLAG_LBA; - /* We need LBA48 for FUA writes */ - if (!(tf->flags & ATA_TFLAG_FUA) && lba_28_ok(block, n_block)) { + if ((dev->flags & ATA_DFLAG_CDL_ENABLED) && cdl) + ata_set_tf_cdl(qc, cdl); + + /* Both FUA writes and a CDL index require 48-bit commands */ + if (!(tf->flags & ATA_TFLAG_FUA) && + !(qc->flags & ATA_QCFLAG_HAS_CDL) && + lba_28_ok(block, n_block)) { /* use LBA28 */ tf->device |= (block >> 24) & 0xf; } else if (lba_48_ok(block, n_block)) { @@ -2367,6 +2397,139 @@ static void ata_dev_config_trusted(struct ata_device *dev) dev->flags |= ATA_DFLAG_TRUSTED; } +static void ata_dev_config_cdl(struct ata_device *dev) +{ + struct ata_port *ap = dev->link->ap; + unsigned int err_mask; + bool cdl_enabled; + u64 val; + + if (ata_id_major_version(dev->id) < 12) + goto not_supported; + + if (!ata_log_supported(dev, ATA_LOG_IDENTIFY_DEVICE) || + !ata_identify_page_supported(dev, ATA_LOG_SUPPORTED_CAPABILITIES) || + !ata_identify_page_supported(dev, ATA_LOG_CURRENT_SETTINGS)) + goto not_supported; + + err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, + ATA_LOG_SUPPORTED_CAPABILITIES, + ap->sector_buf, 1); + if (err_mask) + goto not_supported; + + /* Check Command Duration Limit Supported bits */ + val = get_unaligned_le64(&ap->sector_buf[168]); + if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(0))) + goto not_supported; + + /* Warn the user if command duration guideline is not supported */ + if (!(val & BIT_ULL(1))) + ata_dev_warn(dev, + "Command duration guideline is not supported\n"); + + /* + * We must have support for the sense data for successful NCQ commands + * log indicated by the successful NCQ command sense data supported bit. + */ + val = get_unaligned_le64(&ap->sector_buf[8]); + if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(47))) { + ata_dev_warn(dev, + "CDL supported but Successful NCQ Command Sense Data is not supported\n"); + goto not_supported; + } + + /* Without NCQ autosense, the successful NCQ commands log is useless. */ + if (!ata_id_has_ncq_autosense(dev->id)) { + ata_dev_warn(dev, + "CDL supported but NCQ autosense is not supported\n"); + goto not_supported; + } + + /* + * If CDL is marked as enabled, make sure the feature is enabled too. + * Conversely, if CDL is disabled, make sure the feature is turned off. + */ + err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, + ATA_LOG_CURRENT_SETTINGS, + ap->sector_buf, 1); + if (err_mask) + goto not_supported; + + val = get_unaligned_le64(&ap->sector_buf[8]); + cdl_enabled = val & BIT_ULL(63) && val & BIT_ULL(21); + if (dev->flags & ATA_DFLAG_CDL_ENABLED) { + if (!cdl_enabled) { + /* Enable CDL on the device */ + err_mask = ata_dev_set_feature(dev, SETFEATURES_CDL, 1); + if (err_mask) { + ata_dev_err(dev, + "Enable CDL feature failed\n"); + goto not_supported; + } + } + } else { + if (cdl_enabled) { + /* Disable CDL on the device */ + err_mask = ata_dev_set_feature(dev, SETFEATURES_CDL, 0); + if (err_mask) { + ata_dev_err(dev, + "Disable CDL feature failed\n"); + goto not_supported; + } + } + } + + /* + * While CDL itself has to be enabled using sysfs, CDL requires that + * sense data for successful NCQ commands is enabled to work properly. + * Just like ata_dev_config_sense_reporting(), enable it unconditionally + * if supported. + */ + if (!(val & BIT_ULL(63)) || !(val & BIT_ULL(18))) { + err_mask = ata_dev_set_feature(dev, + SETFEATURE_SENSE_DATA_SUCC_NCQ, 0x1); + if (err_mask) { + ata_dev_warn(dev, + "failed to enable Sense Data for successful NCQ commands, Emask 0x%x\n", + err_mask); + goto not_supported; + } + } + + /* + * Allocate a buffer to handle reading the sense data for successful + * NCQ Commands log page for commands using a CDL with one of the limit + * policy set to 0xD (successful completion with sense data available + * bit set). + */ + if (!ap->ncq_sense_buf) { + ap->ncq_sense_buf = kmalloc(ATA_LOG_SENSE_NCQ_SIZE, GFP_KERNEL); + if (!ap->ncq_sense_buf) + goto not_supported; + } + + /* + * Command duration limits is supported: cache the CDL log page 18h + * (command duration descriptors). + */ + err_mask = ata_read_log_page(dev, ATA_LOG_CDL, 0, ap->sector_buf, 1); + if (err_mask) { + ata_dev_warn(dev, "Read Command Duration Limits log failed\n"); + goto not_supported; + } + + memcpy(dev->cdl, ap->sector_buf, ATA_LOG_CDL_SIZE); + dev->flags |= ATA_DFLAG_CDL; + + return; + +not_supported: + dev->flags &= ~(ATA_DFLAG_CDL | ATA_DFLAG_CDL_ENABLED); + kfree(ap->ncq_sense_buf); + ap->ncq_sense_buf = NULL; +} + static int ata_dev_config_lba(struct ata_device *dev) { const u16 *id = dev->id; @@ -2534,13 +2697,14 @@ static void ata_dev_print_features(struct ata_device *dev) return; ata_dev_info(dev, - "Features:%s%s%s%s%s%s%s\n", + "Features:%s%s%s%s%s%s%s%s\n", dev->flags & ATA_DFLAG_FUA ? " FUA" : "", dev->flags & ATA_DFLAG_TRUSTED ? " Trust" : "", dev->flags & ATA_DFLAG_DA ? " Dev-Attention" : "", dev->flags & ATA_DFLAG_DEVSLP ? " Dev-Sleep" : "", dev->flags & ATA_DFLAG_NCQ_SEND_RECV ? " NCQ-sndrcv" : "", dev->flags & ATA_DFLAG_NCQ_PRIO ? " NCQ-prio" : "", + dev->flags & ATA_DFLAG_CDL ? " CDL" : "", dev->cpr_log ? " CPR" : ""); } @@ -2702,6 +2866,7 @@ int ata_dev_configure(struct ata_device *dev) ata_dev_config_zac(dev); ata_dev_config_trusted(dev); ata_dev_config_cpr(dev); + ata_dev_config_cdl(dev); dev->cdb_len = 32; if (print_info) @@ -4762,6 +4927,36 @@ void ata_qc_complete(struct ata_queued_cmd *qc) fill_result_tf(qc); trace_ata_qc_complete_done(qc); + + /* + * For CDL commands that completed without an error, check if + * we have sense data (ATA_SENSE is set). If we do, then the + * command may have been aborted by the device due to a limit + * timeout using the policy 0xD. For these commands, invoke EH + * to get the command sense data. + */ + if (qc->result_tf.status & ATA_SENSE && + ((ata_is_ncq(qc->tf.protocol) && + dev->flags & ATA_DFLAG_CDL_ENABLED) || + (!(ata_is_ncq(qc->tf.protocol) && + ata_id_sense_reporting_enabled(dev->id))))) { + /* + * Tell SCSI EH to not overwrite scmd->result even if + * this command is finished with result SAM_STAT_GOOD. + */ + qc->scsicmd->flags |= SCMD_FORCE_EH_SUCCESS; + qc->flags |= ATA_QCFLAG_EH_SUCCESS_CMD; + ehi->dev_action[dev->devno] |= ATA_EH_GET_SUCCESS_SENSE; + + /* + * set pending so that ata_qc_schedule_eh() does not + * trigger fast drain, and freeze the port. + */ + ap->pflags |= ATA_PFLAG_EH_PENDING; + ata_qc_schedule_eh(qc); + return; + } + /* Some commands need post-processing after successful * completion. */ @@ -5394,6 +5589,7 @@ static void ata_host_release(struct kref *kref) kfree(ap->pmp_link); kfree(ap->slave_link); + kfree(ap->ncq_sense_buf); kfree(ap); host->ports[i] = NULL; } |