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path: root/drivers/scsi/ibmvscsi/ibmvfc.c
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Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvfc.c')
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c127
1 files changed, 75 insertions, 52 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 42b3ebe85faa..f6646d71633d 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -163,8 +163,8 @@ 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_dereg_sub_crqs(struct ibmvfc_host *);
-static void ibmvfc_reg_sub_crqs(struct ibmvfc_host *);
+static void ibmvfc_dereg_sub_crqs(struct ibmvfc_host *, struct ibmvfc_channels *);
+static void ibmvfc_reg_sub_crqs(struct ibmvfc_host *, struct ibmvfc_channels *);
static const char *unknown_error = "unknown error";
@@ -925,7 +925,7 @@ static int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost)
struct vio_dev *vdev = to_vio_dev(vhost->dev);
unsigned long flags;
- ibmvfc_dereg_sub_crqs(vhost);
+ ibmvfc_dereg_sub_crqs(vhost, &vhost->scsi_scrqs);
/* Re-enable the CRQ */
do {
@@ -944,7 +944,7 @@ 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_reg_sub_crqs(vhost);
+ ibmvfc_reg_sub_crqs(vhost, &vhost->scsi_scrqs);
return rc;
}
@@ -963,7 +963,7 @@ 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_dereg_sub_crqs(vhost);
+ ibmvfc_dereg_sub_crqs(vhost, &vhost->scsi_scrqs);
/* Close the CRQ */
do {
@@ -996,7 +996,7 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost)
spin_unlock(vhost->crq.q_lock);
spin_unlock_irqrestore(vhost->host->host_lock, flags);
- ibmvfc_reg_sub_crqs(vhost);
+ ibmvfc_reg_sub_crqs(vhost, &vhost->scsi_scrqs);
return rc;
}
@@ -5906,12 +5906,13 @@ reg_crq_failed:
return retrc;
}
-static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost,
- int index)
+static int ibmvfc_register_channel(struct ibmvfc_host *vhost,
+ struct ibmvfc_channels *channels,
+ int index)
{
struct device *dev = vhost->dev;
struct vio_dev *vdev = to_vio_dev(dev);
- struct ibmvfc_queue *scrq = &vhost->scsi_scrqs.scrqs[index];
+ struct ibmvfc_queue *scrq = &channels->scrqs[index];
int rc = -ENOMEM;
ENTER;
@@ -5959,11 +5960,13 @@ reg_failed:
return rc;
}
-static void ibmvfc_deregister_scsi_channel(struct ibmvfc_host *vhost, int index)
+static void ibmvfc_deregister_channel(struct ibmvfc_host *vhost,
+ struct ibmvfc_channels *channels,
+ int index)
{
struct device *dev = vhost->dev;
struct vio_dev *vdev = to_vio_dev(dev);
- struct ibmvfc_queue *scrq = &vhost->scsi_scrqs.scrqs[index];
+ struct ibmvfc_queue *scrq = &channels->scrqs[index];
long rc;
ENTER;
@@ -5987,18 +5990,19 @@ static void ibmvfc_deregister_scsi_channel(struct ibmvfc_host *vhost, int index)
LEAVE;
}
-static void ibmvfc_reg_sub_crqs(struct ibmvfc_host *vhost)
+static void ibmvfc_reg_sub_crqs(struct ibmvfc_host *vhost,
+ struct ibmvfc_channels *channels)
{
int i, j;
ENTER;
- if (!vhost->mq_enabled || !vhost->scsi_scrqs.scrqs)
+ if (!vhost->mq_enabled || !channels->scrqs)
return;
- for (i = 0; i < nr_scsi_hw_queues; i++) {
- if (ibmvfc_register_scsi_channel(vhost, i)) {
+ for (i = 0; i < channels->max_queues; i++) {
+ if (ibmvfc_register_channel(vhost, channels, i)) {
for (j = i; j > 0; j--)
- ibmvfc_deregister_scsi_channel(vhost, j - 1);
+ ibmvfc_deregister_channel(vhost, channels, j - 1);
vhost->do_enquiry = 0;
return;
}
@@ -6007,77 +6011,96 @@ static void ibmvfc_reg_sub_crqs(struct ibmvfc_host *vhost)
LEAVE;
}
-static void ibmvfc_dereg_sub_crqs(struct ibmvfc_host *vhost)
+static void ibmvfc_dereg_sub_crqs(struct ibmvfc_host *vhost,
+ struct ibmvfc_channels *channels)
{
int i;
ENTER;
- if (!vhost->mq_enabled || !vhost->scsi_scrqs.scrqs)
+ if (!vhost->mq_enabled || !channels->scrqs)
return;
- for (i = 0; i < nr_scsi_hw_queues; i++)
- ibmvfc_deregister_scsi_channel(vhost, i);
+ for (i = 0; i < channels->max_queues; i++)
+ ibmvfc_deregister_channel(vhost, channels, i);
LEAVE;
}
-static void ibmvfc_init_sub_crqs(struct ibmvfc_host *vhost)
+static int ibmvfc_alloc_channels(struct ibmvfc_host *vhost,
+ struct ibmvfc_channels *channels)
{
struct ibmvfc_queue *scrq;
int i, j;
+ int rc = 0;
+ channels->scrqs = kcalloc(channels->max_queues,
+ sizeof(*channels->scrqs),
+ GFP_KERNEL);
+ if (!channels->scrqs)
+ return -ENOMEM;
+
+ for (i = 0; i < channels->max_queues; i++) {
+ scrq = &channels->scrqs[i];
+ rc = ibmvfc_alloc_queue(vhost, scrq, IBMVFC_SUB_CRQ_FMT);
+ if (rc) {
+ for (j = i; j > 0; j--) {
+ scrq = &channels->scrqs[j - 1];
+ ibmvfc_free_queue(vhost, scrq);
+ }
+ kfree(channels->scrqs);
+ channels->scrqs = NULL;
+ channels->active_queues = 0;
+ return rc;
+ }
+ }
+
+ return rc;
+}
+
+static void ibmvfc_init_sub_crqs(struct ibmvfc_host *vhost)
+{
ENTER;
if (!vhost->mq_enabled)
return;
- vhost->scsi_scrqs.scrqs = kcalloc(nr_scsi_hw_queues,
- sizeof(*vhost->scsi_scrqs.scrqs),
- GFP_KERNEL);
- if (!vhost->scsi_scrqs.scrqs) {
+ if (ibmvfc_alloc_channels(vhost, &vhost->scsi_scrqs)) {
vhost->do_enquiry = 0;
+ vhost->mq_enabled = 0;
return;
}
- for (i = 0; i < nr_scsi_hw_queues; i++) {
- 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;
- vhost->mq_enabled = 0;
- return;
- }
- }
-
- ibmvfc_reg_sub_crqs(vhost);
+ ibmvfc_reg_sub_crqs(vhost, &vhost->scsi_scrqs);
LEAVE;
}
-static void ibmvfc_release_sub_crqs(struct ibmvfc_host *vhost)
+static void ibmvfc_release_channels(struct ibmvfc_host *vhost,
+ struct ibmvfc_channels *channels)
{
struct ibmvfc_queue *scrq;
int i;
+ if (channels->scrqs) {
+ for (i = 0; i < channels->max_queues; i++) {
+ scrq = &channels->scrqs[i];
+ ibmvfc_free_queue(vhost, scrq);
+ }
+
+ kfree(channels->scrqs);
+ channels->scrqs = NULL;
+ channels->active_queues = 0;
+ }
+}
+
+static void ibmvfc_release_sub_crqs(struct ibmvfc_host *vhost)
+{
ENTER;
if (!vhost->scsi_scrqs.scrqs)
return;
- 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);
- }
+ ibmvfc_dereg_sub_crqs(vhost, &vhost->scsi_scrqs);
- kfree(vhost->scsi_scrqs.scrqs);
- vhost->scsi_scrqs.scrqs = NULL;
- vhost->scsi_scrqs.active_queues = 0;
+ ibmvfc_release_channels(vhost, &vhost->scsi_scrqs);
LEAVE;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-11 10:13:10 +0000