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SCSI fixes on 20220620 

Eight fixes, all in drivers (ufs, scsi_debug, storvsc, iscsi, ibmvfc).
 Apart from the ufs command clearing updates, these are mostly minor
 and obvious fixes.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Eight fixes, all in drivers (ufs, scsi_debug, storvsc, iscsi, ibmvfc).

  Apart from the ufs command clearing updates, these are mostly minor
  and obvious fixes"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ibmvfc: Store vhost pointer during subcrq allocation
  scsi: ibmvfc: Allocate/free queue resource only during probe/remove
  scsi: storvsc: Correct reporting of Hyper-V I/O size limits
  scsi: ufs: Fix a race between the interrupt handler and the reset handler
  scsi: ufs: Support clearing multiple commands at once
  scsi: ufs: Simplify ufshcd_clear_cmd()
  scsi: iscsi: Exclude zero from the endpoint ID range
  scsi: scsi_debug: Fix zone transition to full condition
This commit is contained in:
Linus Torvalds 2022-06-20 09:35:04 -05:00
parent c5b3a0946b aeaadcde1a
commit 78ca55889a
6 changed files with 161 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
drivers/scsi/ibmvscsi/ibmvfc.c
View File

@ -160,8 +160,8 @@ static void ibmvfc_npiv_logout(struct ibmvfc_host *);
static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *);
static void ibmvfc_tgt_move_login(struct ibmvfc_target *);
static void ibmvfc_release_sub_crqs(struct ibmvfc_host *);
static void ibmvfc_init_sub_crqs(struct ibmvfc_host *);
static void ibmvfc_dereg_sub_crqs(struct ibmvfc_host *);
static void ibmvfc_reg_sub_crqs(struct ibmvfc_host *);
static const char *unknown_error = "unknown error";
@ -917,7 +917,7 @@ static int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost)
struct vio_dev *vdev = to_vio_dev(vhost->dev);
unsigned long flags;
ibmvfc_release_sub_crqs(vhost);
ibmvfc_dereg_sub_crqs(vhost);
/* Re-enable the CRQ */
do {
@ -936,7 +936,7 @@ static int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost)
spin_unlock(vhost->crq.q_lock);
spin_unlock_irqrestore(vhost->host->host_lock, flags);
ibmvfc_init_sub_crqs(vhost);
ibmvfc_reg_sub_crqs(vhost);
return rc;
}
@ -955,7 +955,7 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost)
struct vio_dev *vdev = to_vio_dev(vhost->dev);
struct ibmvfc_queue *crq = &vhost->crq;
ibmvfc_release_sub_crqs(vhost);
ibmvfc_dereg_sub_crqs(vhost);
/* Close the CRQ */
do {
@ -988,7 +988,7 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost)
spin_unlock(vhost->crq.q_lock);
spin_unlock_irqrestore(vhost->host->host_lock, flags);
ibmvfc_init_sub_crqs(vhost);
ibmvfc_reg_sub_crqs(vhost);
return rc;
}
@ -5682,6 +5682,8 @@ static int ibmvfc_alloc_queue(struct ibmvfc_host *vhost,
queue->cur = 0;
queue->fmt = fmt;
queue->size = PAGE_SIZE / fmt_size;
queue->vhost = vhost;
return 0;
}
@ -5757,9 +5759,6 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost,
ENTER;
if (ibmvfc_alloc_queue(vhost, scrq, IBMVFC_SUB_CRQ_FMT))
return -ENOMEM;
rc = h_reg_sub_crq(vdev->unit_address, scrq->msg_token, PAGE_SIZE,
&scrq->cookie, &scrq->hw_irq);
@ -5790,7 +5789,6 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost,
}
scrq->hwq_id = index;
scrq->vhost = vhost;
LEAVE;
return 0;
@ -5800,7 +5798,6 @@ irq_failed:
rc = plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie);
} while (rtas_busy_delay(rc));
reg_failed:
ibmvfc_free_queue(vhost, scrq);
LEAVE;
return rc;
}
@ -5826,12 +5823,50 @@ static void ibmvfc_deregister_scsi_channel(struct ibmvfc_host *vhost, int index)
if (rc)
dev_err(dev, "Failed to free sub-crq[%d]: rc=%ld\n", index, rc);
ibmvfc_free_queue(vhost, scrq);
/* Clean out the queue */
memset(scrq->msgs.crq, 0, PAGE_SIZE);
scrq->cur = 0;
LEAVE;
}
static void ibmvfc_reg_sub_crqs(struct ibmvfc_host *vhost)
{
int i, j;
ENTER;
if (!vhost->mq_enabled || !vhost->scsi_scrqs.scrqs)
return;
for (i = 0; i < nr_scsi_hw_queues; i++) {
if (ibmvfc_register_scsi_channel(vhost, i)) {
for (j = i; j > 0; j--)
ibmvfc_deregister_scsi_channel(vhost, j - 1);
vhost->do_enquiry = 0;
return;
}
}
LEAVE;
}
static void ibmvfc_dereg_sub_crqs(struct ibmvfc_host *vhost)
{
int i;
ENTER;
if (!vhost->mq_enabled || !vhost->scsi_scrqs.scrqs)
return;
for (i = 0; i < nr_scsi_hw_queues; i++)
ibmvfc_deregister_scsi_channel(vhost, i);
LEAVE;
}
static void ibmvfc_init_sub_crqs(struct ibmvfc_host *vhost)
{
struct ibmvfc_queue *scrq;
int i, j;
ENTER;
@ -5847,30 +5882,41 @@ static void ibmvfc_init_sub_crqs(struct ibmvfc_host *vhost)
}
for (i = 0; i < nr_scsi_hw_queues; i++) {
if (ibmvfc_register_scsi_channel(vhost, i)) {
for (j = i; j > 0; j--)
ibmvfc_deregister_scsi_channel(vhost, j - 1);
scrq = &vhost->scsi_scrqs.scrqs[i];
if (ibmvfc_alloc_queue(vhost, scrq, IBMVFC_SUB_CRQ_FMT)) {
for (j = i; j > 0; j--) {
scrq = &vhost->scsi_scrqs.scrqs[j - 1];
ibmvfc_free_queue(vhost, scrq);
}
kfree(vhost->scsi_scrqs.scrqs);
vhost->scsi_scrqs.scrqs = NULL;
vhost->scsi_scrqs.active_queues = 0;
vhost->do_enquiry = 0;
break;
vhost->mq_enabled = 0;
return;
}
}
ibmvfc_reg_sub_crqs(vhost);
LEAVE;
}
static void ibmvfc_release_sub_crqs(struct ibmvfc_host *vhost)
{
struct ibmvfc_queue *scrq;
int i;
ENTER;
if (!vhost->scsi_scrqs.scrqs)
return;
for (i = 0; i < nr_scsi_hw_queues; i++)
ibmvfc_deregister_scsi_channel(vhost, i);
ibmvfc_dereg_sub_crqs(vhost);
for (i = 0; i < nr_scsi_hw_queues; i++) {
scrq = &vhost->scsi_scrqs.scrqs[i];
ibmvfc_free_queue(vhost, scrq);
}
kfree(vhost->scsi_scrqs.scrqs);
vhost->scsi_scrqs.scrqs = NULL;

2
drivers/scsi/ibmvscsi/ibmvfc.h
View File

@ -789,6 +789,7 @@ struct ibmvfc_queue {
spinlock_t _lock;
spinlock_t *q_lock;
struct ibmvfc_host *vhost;
struct ibmvfc_event_pool evt_pool;
struct list_head sent;
struct list_head free;
@ -797,7 +798,6 @@ struct ibmvfc_queue {
union ibmvfc_iu cancel_rsp;
/* Sub-CRQ fields */
struct ibmvfc_host *vhost;
unsigned long cookie;
unsigned long vios_cookie;
unsigned long hw_irq;

22
drivers/scsi/scsi_debug.c
View File

@ -2826,6 +2826,24 @@ static void zbc_open_zone(struct sdebug_dev_info *devip,
}
}
static inline void zbc_set_zone_full(struct sdebug_dev_info *devip,
struct sdeb_zone_state *zsp)
{
switch (zsp->z_cond) {
case ZC2_IMPLICIT_OPEN:
devip->nr_imp_open--;
break;
case ZC3_EXPLICIT_OPEN:
devip->nr_exp_open--;
break;
default:
WARN_ONCE(true, "Invalid zone %llu condition %x\n",
zsp->z_start, zsp->z_cond);
break;
}
zsp->z_cond = ZC5_FULL;
}
static void zbc_inc_wp(struct sdebug_dev_info *devip,
unsigned long long lba, unsigned int num)
{
@ -2838,7 +2856,7 @@ static void zbc_inc_wp(struct sdebug_dev_info *devip,
if (zsp->z_type == ZBC_ZTYPE_SWR) {
zsp->z_wp += num;
if (zsp->z_wp >= zend)
zsp->z_cond = ZC5_FULL;
zbc_set_zone_full(devip, zsp);
return;
}
@ -2857,7 +2875,7 @@ static void zbc_inc_wp(struct sdebug_dev_info *devip,
n = num;
}
if (zsp->z_wp >= zend)
zsp->z_cond = ZC5_FULL;
zbc_set_zone_full(devip, zsp);
num -= n;
lba += n;

7
drivers/scsi/scsi_transport_iscsi.c
View File

@ -212,7 +212,12 @@ iscsi_create_endpoint(int dd_size)
return NULL;
mutex_lock(&iscsi_ep_idr_mutex);
id = idr_alloc(&iscsi_ep_idr, ep, 0, -1, GFP_NOIO);
/*
* First endpoint id should be 1 to comply with user space
* applications (iscsid).
*/
id = idr_alloc(&iscsi_ep_idr, ep, 1, -1, GFP_NOIO);
if (id < 0) {
mutex_unlock(&iscsi_ep_idr_mutex);
printk(KERN_ERR "Could not allocate endpoint ID. Error %d.\n",

27
drivers/scsi/storvsc_drv.c
View File

@ -1844,7 +1844,7 @@ static struct scsi_host_template scsi_driver = {
.cmd_per_lun = 2048,
.this_id = -1,
/* Ensure there are no gaps in presented sgls */
.virt_boundary_mask = PAGE_SIZE-1,
.virt_boundary_mask = HV_HYP_PAGE_SIZE - 1,
.no_write_same = 1,
.track_queue_depth = 1,
.change_queue_depth = storvsc_change_queue_depth,
@ -1895,6 +1895,7 @@ static int storvsc_probe(struct hv_device *device,
int target = 0;
struct storvsc_device *stor_device;
int max_sub_channels = 0;
u32 max_xfer_bytes;
/*
* We support sub-channels for storage on SCSI and FC controllers.
@ -1968,12 +1969,28 @@ static int storvsc_probe(struct hv_device *device,
}
/* max cmd length */
host->max_cmd_len = STORVSC_MAX_CMD_LEN;
/*
* set the table size based on the info we got
* from the host.
* Any reasonable Hyper-V configuration should provide
* max_transfer_bytes value aligning to HV_HYP_PAGE_SIZE,
* protecting it from any weird value.
*/
host->sg_tablesize = (stor_device->max_transfer_bytes >> PAGE_SHIFT);
max_xfer_bytes = round_down(stor_device->max_transfer_bytes, HV_HYP_PAGE_SIZE);
/* max_hw_sectors_kb */
host->max_sectors = max_xfer_bytes >> 9;
/*
* There are 2 requirements for Hyper-V storvsc sgl segments,
* based on which the below calculation for max segments is
* done:
*
* 1. Except for the first and last sgl segment, all sgl segments
* should be align to HV_HYP_PAGE_SIZE, that also means the
* maximum number of segments in a sgl can be calculated by
* dividing the total max transfer length by HV_HYP_PAGE_SIZE.
*
* 2. Except for the first and last, each entry in the SGL must
* have an offset that is a multiple of HV_HYP_PAGE_SIZE.
*/
host->sg_tablesize = (max_xfer_bytes >> HV_HYP_PAGE_SHIFT) + 1;
/*
* For non-IDE disks, the host supports multiple channels.
* Set the number of HW queues we are supporting.

76
drivers/ufs/core/ufshcd.c
View File

@ -748,17 +748,28 @@ static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp)
}
/**
* ufshcd_utrl_clear - Clear a bit in UTRLCLR register
* ufshcd_utrl_clear() - Clear requests from the controller request list.
* @hba: per adapter instance
* @pos: position of the bit to be cleared
* @mask: mask with one bit set for each request to be cleared
*/
static inline void ufshcd_utrl_clear(struct ufs_hba *hba, u32 pos)
static inline void ufshcd_utrl_clear(struct ufs_hba *hba, u32 mask)
{
if (hba->quirks & UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR)
ufshcd_writel(hba, (1 << pos), REG_UTP_TRANSFER_REQ_LIST_CLEAR);
else
ufshcd_writel(hba, ~(1 << pos),
REG_UTP_TRANSFER_REQ_LIST_CLEAR);
mask = ~mask;
/*
* From the UFSHCI specification: "UTP Transfer Request List CLear
* Register (UTRLCLR): This field is bit significant. Each bit
* corresponds to a slot in the UTP Transfer Request List, where bit 0
* corresponds to request slot 0. A bit in this field is set to ‘0’
* by host software to indicate to the host controller that a transfer
* request slot is cleared. The host controller
* shall free up any resources associated to the request slot
* immediately, and shall set the associated bit in UTRLDBR to ‘0’. The
* host software indicates no change to request slots by setting the
* associated bits in this field to ‘1’. Bits in this field shall only
* be set ‘1’ or ‘0’ by host software when UTRLRSR is set to ‘1’."
*/
ufshcd_writel(hba, ~mask, REG_UTP_TRANSFER_REQ_LIST_CLEAR);
}
/**
@ -2863,27 +2874,26 @@ static int ufshcd_compose_dev_cmd(struct ufs_hba *hba,
return ufshcd_compose_devman_upiu(hba, lrbp);
}
static int
ufshcd_clear_cmd(struct ufs_hba *hba, int tag)
/*
* Clear all the requests from the controller for which a bit has been set in
* @mask and wait until the controller confirms that these requests have been
* cleared.
*/
static int ufshcd_clear_cmds(struct ufs_hba *hba, u32 mask)
{
int err = 0;
unsigned long flags;
u32 mask = 1 << tag;
/* clear outstanding transaction before retry */
spin_lock_irqsave(hba->host->host_lock, flags);
ufshcd_utrl_clear(hba, tag);
ufshcd_utrl_clear(hba, mask);
spin_unlock_irqrestore(hba->host->host_lock, flags);
/*
* wait for h/w to clear corresponding bit in door-bell.
* max. wait is 1 sec.
*/
err = ufshcd_wait_for_register(hba,
REG_UTP_TRANSFER_REQ_DOOR_BELL,
mask, ~mask, 1000, 1000);
return err;
return ufshcd_wait_for_register(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL,
mask, ~mask, 1000, 1000);
}
static int
@ -2963,7 +2973,7 @@ static int ufshcd_wait_for_dev_cmd(struct ufs_hba *hba,
err = -ETIMEDOUT;
dev_dbg(hba->dev, "%s: dev_cmd request timedout, tag %d\n",
__func__, lrbp->task_tag);
if (!ufshcd_clear_cmd(hba, lrbp->task_tag))
if (!ufshcd_clear_cmds(hba, 1U << lrbp->task_tag))
/* successfully cleared the command, retry if needed */
err = -EAGAIN;
/*
@ -6958,14 +6968,14 @@ int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba,
}
/**
* ufshcd_eh_device_reset_handler - device reset handler registered to
* scsi layer.
* ufshcd_eh_device_reset_handler() - Reset a single logical unit.
* @cmd: SCSI command pointer
*
* Returns SUCCESS/FAILED
*/
static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd)
{
unsigned long flags, pending_reqs = 0, not_cleared = 0;
struct Scsi_Host *host;
struct ufs_hba *hba;
u32 pos;
@ -6984,14 +6994,24 @@ static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd)
}
/* clear the commands that were pending for corresponding LUN */
for_each_set_bit(pos, &hba->outstanding_reqs, hba->nutrs) {
if (hba->lrb[pos].lun == lun) {
err = ufshcd_clear_cmd(hba, pos);
if (err)
break;
__ufshcd_transfer_req_compl(hba, 1U << pos);
}
spin_lock_irqsave(&hba->outstanding_lock, flags);
for_each_set_bit(pos, &hba->outstanding_reqs, hba->nutrs)
if (hba->lrb[pos].lun == lun)
__set_bit(pos, &pending_reqs);
hba->outstanding_reqs &= ~pending_reqs;
spin_unlock_irqrestore(&hba->outstanding_lock, flags);
if (ufshcd_clear_cmds(hba, pending_reqs) < 0) {
spin_lock_irqsave(&hba->outstanding_lock, flags);
not_cleared = pending_reqs &
ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
hba->outstanding_reqs |= not_cleared;
spin_unlock_irqrestore(&hba->outstanding_lock, flags);
dev_err(hba->dev, "%s: failed to clear requests %#lx\n",
__func__, not_cleared);
}
__ufshcd_transfer_req_compl(hba, pending_reqs & ~not_cleared);
out:
hba->req_abort_count = 0;
@ -7088,7 +7108,7 @@ static int ufshcd_try_to_abort_task(struct ufs_hba *hba, int tag)
goto out;
}
err = ufshcd_clear_cmd(hba, tag);
err = ufshcd_clear_cmds(hba, 1U << tag);
if (err)
dev_err(hba->dev, "%s: Failed clearing cmd at tag %d, err %d\n",
__func__, tag, err);