linux-kernel - [PATCH v2 05/13] scsi: fnic: Get copy workqueue count and interrupt mode from config

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Date:   Fri, 27 Oct 2023 11:02:54 -0700
From:   Karan Tilak Kumar <kartilak@...co.com>
To:     sebaddel@...co.com
Cc:     arulponn@...co.com, djhawar@...co.com, gcboffa@...co.com,
        mkai2@...co.com, satishkh@...co.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Karan Tilak Kumar <kartilak@...co.com>
Subject: [PATCH v2 05/13] scsi: fnic: Get copy workqueue count and interrupt mode from config

Get the copy workqueue count and interrupt mode from
the configuration. The config can be changed via UCSM.
Add logs to print the interrupt mode and copy workqueue count.
Add logs to print the vNIC resources.

Reviewed-by: Sesidhar Baddela <sebaddel@...co.com>
Reviewed-by: Arulprabhu Ponnusamy <arulponn@...co.com>
Signed-off-by: Karan Tilak Kumar <kartilak@...co.com>
---
 drivers/scsi/fnic/fnic_res.c | 42 ++++++++++++++++++++++++++++++------
 1 file changed, 36 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/fnic/fnic_res.c b/drivers/scsi/fnic/fnic_res.c
index 109316cc4ad9..33dd27f6f24e 100644
--- a/drivers/scsi/fnic/fnic_res.c
+++ b/drivers/scsi/fnic/fnic_res.c
@@ -57,6 +57,8 @@ int fnic_get_vnic_config(struct fnic *fnic)
 	GET_CONFIG(port_down_timeout);
 	GET_CONFIG(port_down_io_retries);
 	GET_CONFIG(luns_per_tgt);
+	GET_CONFIG(intr_mode);
+	GET_CONFIG(wq_copy_count);
 
 	c->wq_enet_desc_count =
 		min_t(u32, VNIC_FNIC_WQ_DESCS_MAX,
@@ -131,6 +133,12 @@ int fnic_get_vnic_config(struct fnic *fnic)
 	c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
 	c->intr_timer_type = c->intr_timer_type;
 
+	/* for older firmware, GET_CONFIG will not return anything */
+	if (c->wq_copy_count == 0)
+		c->wq_copy_count = 1;
+
+	c->wq_copy_count = min_t(u16, FNIC_WQ_COPY_MAX, c->wq_copy_count);
+
 	shost_printk(KERN_INFO, fnic->lport->host,
 		     "vNIC MAC addr %pM "
 		     "wq/wq_copy/rq %d/%d/%d\n",
@@ -161,6 +169,10 @@ int fnic_get_vnic_config(struct fnic *fnic)
 	shost_printk(KERN_INFO, fnic->lport->host,
 		     "vNIC port dn io retries %d port dn timeout %d\n",
 		     c->port_down_io_retries, c->port_down_timeout);
+	shost_printk(KERN_INFO, fnic->lport->host,
+			"vNIC wq_copy_count: %d\n", c->wq_copy_count);
+	shost_printk(KERN_INFO, fnic->lport->host,
+			"vNIC intr mode: %d\n", c->intr_mode);
 
 	return 0;
 }
@@ -187,12 +199,25 @@ int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
 void fnic_get_res_counts(struct fnic *fnic)
 {
 	fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ);
-	fnic->raw_wq_count = fnic->wq_count - 1;
-	fnic->wq_copy_count = fnic->wq_count - fnic->raw_wq_count;
+	fnic->raw_wq_count = 1;
+	fnic->wq_copy_count = fnic->config.wq_copy_count;
 	fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ);
 	fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ);
 	fnic->intr_count = vnic_dev_get_res_count(fnic->vdev,
 		RES_TYPE_INTR_CTRL);
+
+	shost_printk(KERN_INFO, fnic->lport->host,
+		"vNIC fw resources wq_count: %d\n", fnic->wq_count);
+	shost_printk(KERN_INFO, fnic->lport->host,
+		"vNIC fw resources raw_wq_count: %d\n", fnic->raw_wq_count);
+	shost_printk(KERN_INFO, fnic->lport->host,
+		"vNIC fw resources wq_copy_count: %d\n", fnic->wq_copy_count);
+	shost_printk(KERN_INFO, fnic->lport->host,
+		"vNIC fw resources rq_count: %d\n", fnic->rq_count);
+	shost_printk(KERN_INFO, fnic->lport->host,
+		"vNIC fw resources cq_count: %d\n", fnic->cq_count);
+	shost_printk(KERN_INFO, fnic->lport->host,
+		"vNIC fw resources intr_count: %d\n", fnic->intr_count);
 }
 
 void fnic_free_vnic_resources(struct fnic *fnic)
@@ -234,10 +259,15 @@ int fnic_alloc_vnic_resources(struct fnic *fnic)
 		     intr_mode == VNIC_DEV_INTR_MODE_MSIX ?
 		     "MSI-X" : "unknown");
 
-	shost_printk(KERN_INFO, fnic->lport->host, "vNIC resources avail: "
-		     "wq %d cp_wq %d raw_wq %d rq %d cq %d intr %d\n",
-		     fnic->wq_count, fnic->wq_copy_count, fnic->raw_wq_count,
-		     fnic->rq_count, fnic->cq_count, fnic->intr_count);
+	shost_printk(KERN_INFO, fnic->lport->host,
+			"vNIC resources avail: wq %d cp_wq %d raw_wq %d rq %d",
+			fnic->wq_count, fnic->wq_copy_count,
+			fnic->raw_wq_count, fnic->rq_count);
+
+	shost_printk(KERN_INFO, fnic->lport->host,
+			"vNIC resources avail: cq %d intr %d cpy-wq desc count %d\n",
+			fnic->cq_count, fnic->intr_count,
+			fnic->config.wq_copy_desc_count);
 
 	/* Allocate Raw WQ used for FCS frames */
 	for (i = 0; i < fnic->raw_wq_count; i++) {
-- 
2.31.1