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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/g…
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…it/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three fixes: one in drivers (lpfc) and two for zoned block devices.

  The latter also impinges on the block layer but only to introduce a
  new block API for setting the zone model rather than fiddling with the
  queue directly in the zoned block driver"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: sd: sd_zbc: Fix ZBC disk initialization
  scsi: sd: sd_zbc: Fix handling of host-aware ZBC disks
  scsi: lpfc: Fix initial FLOGI failure due to BBSCN not supported
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@torvalds
torvalds committed Sep 26, 2020
2 parents 692495b + 6c5dee1 commit a1bffa4
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Showing 6 changed files with 159 additions and 73 deletions.
46 changes: 46 additions & 0 deletions block/blk-settings.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -801,6 +801,52 @@ bool blk_queue_can_use_dma_map_merging(struct request_queue *q,
}
EXPORT_SYMBOL_GPL(blk_queue_can_use_dma_map_merging);

/**
* blk_queue_set_zoned - configure a disk queue zoned model.
* @disk: the gendisk of the queue to configure
* @model: the zoned model to set
*
* Set the zoned model of the request queue of @disk according to @model.
* When @model is BLK_ZONED_HM (host managed), this should be called only
* if zoned block device support is enabled (CONFIG_BLK_DEV_ZONED option).
* If @model specifies BLK_ZONED_HA (host aware), the effective model used
* depends on CONFIG_BLK_DEV_ZONED settings and on the existence of partitions
* on the disk.
*/
void blk_queue_set_zoned(struct gendisk *disk, enum blk_zoned_model model)
{
switch (model) {
case BLK_ZONED_HM:
/*
* Host managed devices are supported only if
* CONFIG_BLK_DEV_ZONED is enabled.
*/
WARN_ON_ONCE(!IS_ENABLED(CONFIG_BLK_DEV_ZONED));
break;
case BLK_ZONED_HA:
/*
* Host aware devices can be treated either as regular block
* devices (similar to drive managed devices) or as zoned block
* devices to take advantage of the zone command set, similarly
* to host managed devices. We try the latter if there are no
* partitions and zoned block device support is enabled, else
* we do nothing special as far as the block layer is concerned.
*/
if (!IS_ENABLED(CONFIG_BLK_DEV_ZONED) ||
disk_has_partitions(disk))
model = BLK_ZONED_NONE;
break;
case BLK_ZONED_NONE:
default:
if (WARN_ON_ONCE(model != BLK_ZONED_NONE))
model = BLK_ZONED_NONE;
break;
}

disk->queue->limits.zoned = model;
}
EXPORT_SYMBOL_GPL(blk_queue_set_zoned);

static int __init blk_settings_init(void)
{
blk_max_low_pfn = max_low_pfn - 1;
Expand Down
76 changes: 52 additions & 24 deletions drivers/scsi/lpfc/lpfc_hbadisc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,7 @@ static void lpfc_disc_timeout_handler(struct lpfc_vport *);
static void lpfc_disc_flush_list(struct lpfc_vport *vport);
static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
static int lpfc_fcf_inuse(struct lpfc_hba *);
static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);

void
lpfc_terminate_rport_io(struct fc_rport *rport)
Expand Down Expand Up @@ -1138,11 +1139,13 @@ lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
return;
}


void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
LPFC_MBOXQ_t *sparam_mb;
struct lpfc_dmabuf *sparam_mp;
int rc;

if (pmb->u.mb.mbxStatus)
goto out;
Expand All @@ -1167,12 +1170,42 @@ lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
}

/* Start discovery by sending a FLOGI. port_state is identically
* LPFC_FLOGI while waiting for FLOGI cmpl. Check if sending
* the FLOGI is being deferred till after MBX_READ_SPARAM completes.
* LPFC_FLOGI while waiting for FLOGI cmpl.
*/
if (vport->port_state != LPFC_FLOGI) {
if (!(phba->hba_flag & HBA_DEFER_FLOGI))
/* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
* bb-credit recovery is in place.
*/
if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
!(phba->link_flag & LS_LOOPBACK_MODE)) {
sparam_mb = mempool_alloc(phba->mbox_mem_pool,
GFP_KERNEL);
if (!sparam_mb)
goto sparam_out;

rc = lpfc_read_sparam(phba, sparam_mb, 0);
if (rc) {
mempool_free(sparam_mb, phba->mbox_mem_pool);
goto sparam_out;
}
sparam_mb->vport = vport;
sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
sparam_mp = (struct lpfc_dmabuf *)
sparam_mb->ctx_buf;
lpfc_mbuf_free(phba, sparam_mp->virt,
sparam_mp->phys);
kfree(sparam_mp);
sparam_mb->ctx_buf = NULL;
mempool_free(sparam_mb, phba->mbox_mem_pool);
goto sparam_out;
}

phba->hba_flag |= HBA_DEFER_FLOGI;
} else {
lpfc_initial_flogi(vport);
}
} else {
if (vport->fc_flag & FC_PT2PT)
lpfc_disc_start(vport);
Expand All @@ -1184,6 +1217,7 @@ lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
"0306 CONFIG_LINK mbxStatus error x%x "
"HBA state x%x\n",
pmb->u.mb.mbxStatus, vport->port_state);
sparam_out:
mempool_free(pmb, phba->mbox_mem_pool);

lpfc_linkdown(phba);
Expand Down Expand Up @@ -3239,21 +3273,6 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
lpfc_linkup(phba);
sparam_mbox = NULL;

if (!(phba->hba_flag & HBA_FCOE_MODE)) {
cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!cfglink_mbox)
goto out;
vport->port_state = LPFC_LOCAL_CFG_LINK;
lpfc_config_link(phba, cfglink_mbox);
cfglink_mbox->vport = vport;
cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mempool_free(cfglink_mbox, phba->mbox_mem_pool);
goto out;
}
}

sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!sparam_mbox)
goto out;
Expand All @@ -3274,7 +3293,20 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
goto out;
}

if (phba->hba_flag & HBA_FCOE_MODE) {
if (!(phba->hba_flag & HBA_FCOE_MODE)) {
cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!cfglink_mbox)
goto out;
vport->port_state = LPFC_LOCAL_CFG_LINK;
lpfc_config_link(phba, cfglink_mbox);
cfglink_mbox->vport = vport;
cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mempool_free(cfglink_mbox, phba->mbox_mem_pool);
goto out;
}
} else {
vport->port_state = LPFC_VPORT_UNKNOWN;
/*
* Add the driver's default FCF record at FCF index 0 now. This
Expand Down Expand Up @@ -3331,10 +3363,6 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
}
/* Reset FCF roundrobin bmask for new discovery */
lpfc_sli4_clear_fcf_rr_bmask(phba);
} else {
if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
!(phba->link_flag & LS_LOOPBACK_MODE))
phba->hba_flag |= HBA_DEFER_FLOGI;
}

/* Prepare for LINK up registrations */
Expand Down
34 changes: 18 additions & 16 deletions drivers/scsi/sd.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2964,26 +2964,32 @@ static void sd_read_block_characteristics(struct scsi_disk *sdkp)

if (sdkp->device->type == TYPE_ZBC) {
/* Host-managed */
q->limits.zoned = BLK_ZONED_HM;
blk_queue_set_zoned(sdkp->disk, BLK_ZONED_HM);
} else {
sdkp->zoned = (buffer[8] >> 4) & 3;
if (sdkp->zoned == 1 && !disk_has_partitions(sdkp->disk)) {
if (sdkp->zoned == 1) {
/* Host-aware */
q->limits.zoned = BLK_ZONED_HA;
blk_queue_set_zoned(sdkp->disk, BLK_ZONED_HA);
} else {
/*
* Treat drive-managed devices and host-aware devices
* with partitions as regular block devices.
*/
q->limits.zoned = BLK_ZONED_NONE;
if (sdkp->zoned == 2 && sdkp->first_scan)
sd_printk(KERN_NOTICE, sdkp,
"Drive-managed SMR disk\n");
/* Regular disk or drive managed disk */
blk_queue_set_zoned(sdkp->disk, BLK_ZONED_NONE);
}
}
if (blk_queue_is_zoned(q) && sdkp->first_scan)

if (!sdkp->first_scan)
goto out;

if (blk_queue_is_zoned(q)) {
sd_printk(KERN_NOTICE, sdkp, "Host-%s zoned block device\n",
q->limits.zoned == BLK_ZONED_HM ? "managed" : "aware");
} else {
if (sdkp->zoned == 1)
sd_printk(KERN_NOTICE, sdkp,
"Host-aware SMR disk used as regular disk\n");
else if (sdkp->zoned == 2)
sd_printk(KERN_NOTICE, sdkp,
"Drive-managed SMR disk\n");
}

out:
kfree(buffer);
Expand Down Expand Up @@ -3404,10 +3410,6 @@ static int sd_probe(struct device *dev)
sdkp->first_scan = 1;
sdkp->max_medium_access_timeouts = SD_MAX_MEDIUM_TIMEOUTS;

error = sd_zbc_init_disk(sdkp);
if (error)
goto out_free_index;

sd_revalidate_disk(gd);

gd->flags = GENHD_FL_EXT_DEVT;
Expand Down
8 changes: 1 addition & 7 deletions drivers/scsi/sd.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -215,7 +215,6 @@ static inline int sd_is_zoned(struct scsi_disk *sdkp)

#ifdef CONFIG_BLK_DEV_ZONED

int sd_zbc_init_disk(struct scsi_disk *sdkp);
void sd_zbc_release_disk(struct scsi_disk *sdkp);
int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buffer);
int sd_zbc_revalidate_zones(struct scsi_disk *sdkp);
Expand All @@ -231,11 +230,6 @@ blk_status_t sd_zbc_prepare_zone_append(struct scsi_cmnd *cmd, sector_t *lba,

#else /* CONFIG_BLK_DEV_ZONED */

static inline int sd_zbc_init_disk(struct scsi_disk *sdkp)
{
return 0;
}

static inline void sd_zbc_release_disk(struct scsi_disk *sdkp) {}

static inline int sd_zbc_read_zones(struct scsi_disk *sdkp,
Expand All @@ -259,7 +253,7 @@ static inline blk_status_t sd_zbc_setup_zone_mgmt_cmnd(struct scsi_cmnd *cmd,
static inline unsigned int sd_zbc_complete(struct scsi_cmnd *cmd,
unsigned int good_bytes, struct scsi_sense_hdr *sshdr)
{
return 0;
return good_bytes;
}

static inline blk_status_t sd_zbc_prepare_zone_append(struct scsi_cmnd *cmd,
Expand Down
66 changes: 40 additions & 26 deletions drivers/scsi/sd_zbc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -651,6 +651,28 @@ static void sd_zbc_print_zones(struct scsi_disk *sdkp)
sdkp->zone_blocks);
}

static int sd_zbc_init_disk(struct scsi_disk *sdkp)
{
sdkp->zones_wp_offset = NULL;
spin_lock_init(&sdkp->zones_wp_offset_lock);
sdkp->rev_wp_offset = NULL;
mutex_init(&sdkp->rev_mutex);
INIT_WORK(&sdkp->zone_wp_offset_work, sd_zbc_update_wp_offset_workfn);
sdkp->zone_wp_update_buf = kzalloc(SD_BUF_SIZE, GFP_KERNEL);
if (!sdkp->zone_wp_update_buf)
return -ENOMEM;

return 0;
}

void sd_zbc_release_disk(struct scsi_disk *sdkp)
{
kvfree(sdkp->zones_wp_offset);
sdkp->zones_wp_offset = NULL;
kfree(sdkp->zone_wp_update_buf);
sdkp->zone_wp_update_buf = NULL;
}

static void sd_zbc_revalidate_zones_cb(struct gendisk *disk)
{
struct scsi_disk *sdkp = scsi_disk(disk);
Expand All @@ -667,7 +689,24 @@ int sd_zbc_revalidate_zones(struct scsi_disk *sdkp)
u32 max_append;
int ret = 0;

if (!sd_is_zoned(sdkp))
/*
* For all zoned disks, initialize zone append emulation data if not
* already done. This is necessary also for host-aware disks used as
* regular disks due to the presence of partitions as these partitions
* may be deleted and the disk zoned model changed back from
* BLK_ZONED_NONE to BLK_ZONED_HA.
*/
if (sd_is_zoned(sdkp) && !sdkp->zone_wp_update_buf) {
ret = sd_zbc_init_disk(sdkp);
if (ret)
return ret;
}

/*
* There is nothing to do for regular disks, including host-aware disks
* that have partitions.
*/
if (!blk_queue_is_zoned(q))
return 0;

/*
Expand Down Expand Up @@ -764,28 +803,3 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buf)

return ret;
}

int sd_zbc_init_disk(struct scsi_disk *sdkp)
{
if (!sd_is_zoned(sdkp))
return 0;

sdkp->zones_wp_offset = NULL;
spin_lock_init(&sdkp->zones_wp_offset_lock);
sdkp->rev_wp_offset = NULL;
mutex_init(&sdkp->rev_mutex);
INIT_WORK(&sdkp->zone_wp_offset_work, sd_zbc_update_wp_offset_workfn);
sdkp->zone_wp_update_buf = kzalloc(SD_BUF_SIZE, GFP_KERNEL);
if (!sdkp->zone_wp_update_buf)
return -ENOMEM;

return 0;
}

void sd_zbc_release_disk(struct scsi_disk *sdkp)
{
kvfree(sdkp->zones_wp_offset);
sdkp->zones_wp_offset = NULL;
kfree(sdkp->zone_wp_update_buf);
sdkp->zone_wp_update_buf = NULL;
}
2 changes: 2 additions & 0 deletions include/linux/blkdev.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -352,6 +352,8 @@ struct queue_limits {
typedef int (*report_zones_cb)(struct blk_zone *zone, unsigned int idx,
void *data);

void blk_queue_set_zoned(struct gendisk *disk, enum blk_zoned_model model);

#ifdef CONFIG_BLK_DEV_ZONED

#define BLK_ALL_ZONES ((unsigned int)-1)
Expand Down

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