scsi: qla2xxx: Correctly report max/min supported speeds

This patch fixes reported speed for min_link and max_supported speed. Also
rename sysfs nodes link_speed and max_supported to be consistent with
{min|max}_suuported_speed.

Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Mike Hernandez <mhernandez@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

4 files changed, 98 insertions, 70 deletions

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 93da79a0ccf5..e762e60ae072 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -1621,8 +1621,8 @@ qla2x00_pep_version_show(struct device *dev, struct device_attribute *attr,
 }
 
 static ssize_t
-qla2x00_min_link_speed_show(struct device *dev, struct device_attribute *attr,
-    char *buf)
+qla2x00_min_supported_speed_show(struct device *dev,
+    struct device_attribute *attr, char *buf)
 {
 	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));
 	struct qla_hw_data *ha = vha->hw;
@@ -1631,16 +1631,17 @@ qla2x00_min_link_speed_show(struct device *dev, struct device_attribute *attr,
 		return scnprintf(buf, PAGE_SIZE, "\n");
 
 	return scnprintf(buf, PAGE_SIZE, "%s\n",
-	    ha->min_link_speed == 5 ? "32Gps" :
-	    ha->min_link_speed == 4 ? "16Gps" :
-	    ha->min_link_speed == 3 ? "8Gps" :
-	    ha->min_link_speed == 2 ? "4Gps" :
-	    ha->min_link_speed != 0 ? "unknown" : "");
+	    ha->min_supported_speed == 6 ? "64Gps" :
+	    ha->min_supported_speed == 5 ? "32Gps" :
+	    ha->min_supported_speed == 4 ? "16Gps" :
+	    ha->min_supported_speed == 3 ? "8Gps" :
+	    ha->min_supported_speed == 2 ? "4Gps" :
+	    ha->min_supported_speed != 0 ? "unknown" : "");
 }
 
 static ssize_t
-qla2x00_max_speed_sup_show(struct device *dev, struct device_attribute *attr,
-    char *buf)
+qla2x00_max_supported_speed_show(struct device *dev,
+    struct device_attribute *attr, char *buf)
 {
 	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));
 	struct qla_hw_data *ha = vha->hw;
@@ -1649,7 +1650,9 @@ qla2x00_max_speed_sup_show(struct device *dev, struct device_attribute *attr,
 		return scnprintf(buf, PAGE_SIZE, "\n");
 
 	return scnprintf(buf, PAGE_SIZE, "%s\n",
-	    ha->max_speed_sup ? "32Gps" : "16Gps");
+	    ha->max_supported_speed  == 2 ? "64Gps" :
+	    ha->max_supported_speed  == 1 ? "32Gps" :
+	    ha->max_supported_speed  == 0 ? "16Gps" : "unknown");
 }
 
 static ssize_t
@@ -2253,8 +2256,10 @@ static DEVICE_ATTR(allow_cna_fw_dump, S_IRUGO | S_IWUSR,
 		   qla2x00_allow_cna_fw_dump_show,
 		   qla2x00_allow_cna_fw_dump_store);
 static DEVICE_ATTR(pep_version, S_IRUGO, qla2x00_pep_version_show, NULL);
-static DEVICE_ATTR(min_link_speed, S_IRUGO, qla2x00_min_link_speed_show, NULL);
-static DEVICE_ATTR(max_speed_sup, S_IRUGO, qla2x00_max_speed_sup_show, NULL);
+static DEVICE_ATTR(min_supported_speed, 0444,
+		   qla2x00_min_supported_speed_show, NULL);
+static DEVICE_ATTR(max_supported_speed, 0444,
+		   qla2x00_max_supported_speed_show, NULL);
 static DEVICE_ATTR(zio_threshold, 0644,
     qla_zio_threshold_show,
     qla_zio_threshold_store);
@@ -2303,8 +2308,8 @@ struct device_attribute *qla2x00_host_attrs[] = {
 	&dev_attr_fw_dump_size,
 	&dev_attr_allow_cna_fw_dump,
 	&dev_attr_pep_version,
-	&dev_attr_min_link_speed,
-	&dev_attr_max_speed_sup,
+	&dev_attr_min_supported_speed,
+	&dev_attr_max_supported_speed,
 	&dev_attr_zio_threshold,
 	&dev_attr_dif_bundle_statistics,
 	&dev_attr_port_speed,
@@ -3033,7 +3038,7 @@ void
 qla2x00_init_host_attr(scsi_qla_host_t *vha)
 {
 	struct qla_hw_data *ha = vha->hw;
-	u32 speed = FC_PORTSPEED_UNKNOWN;
+	u32 speeds = FC_PORTSPEED_UNKNOWN;
 
 	fc_host_dev_loss_tmo(vha->host) = ha->port_down_retry_count;
 	fc_host_node_name(vha->host) = wwn_to_u64(vha->node_name);
@@ -3044,28 +3049,45 @@ qla2x00_init_host_attr(scsi_qla_host_t *vha)
 	fc_host_npiv_vports_inuse(vha->host) = ha->cur_vport_count;
 
 	if (IS_CNA_CAPABLE(ha))
-		speed = FC_PORTSPEED_10GBIT;
-	else if (IS_QLA2031(ha))
-		speed = FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
-		    FC_PORTSPEED_4GBIT;
-	else if (IS_QLA25XX(ha))
-		speed = FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT |
-		    FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
+		speeds = FC_PORTSPEED_10GBIT;
+	else if (IS_QLA28XX(ha) || IS_QLA27XX(ha)) {
+		if (ha->max_supported_speed == 2) {
+			if (ha->min_supported_speed <= 6)
+				speeds |= FC_PORTSPEED_64GBIT;
+		}
+		if (ha->max_supported_speed == 2 ||
+		    ha->max_supported_speed == 1) {
+			if (ha->min_supported_speed <= 5)
+				speeds |= FC_PORTSPEED_32GBIT;
+		}
+		if (ha->max_supported_speed == 2 ||
+		    ha->max_supported_speed == 1 ||
+		    ha->max_supported_speed == 0) {
+			if (ha->min_supported_speed <= 4)
+				speeds |= FC_PORTSPEED_16GBIT;
+		}
+		if (ha->max_supported_speed == 1 ||
+		    ha->max_supported_speed == 0) {
+			if (ha->min_supported_speed <= 3)
+				speeds |= FC_PORTSPEED_8GBIT;
+		}
+		if (ha->max_supported_speed == 0) {
+			if (ha->min_supported_speed <= 2)
+				speeds |= FC_PORTSPEED_4GBIT;
+		}
+	} else if (IS_QLA2031(ha))
+		speeds = FC_PORTSPEED_16GBIT|FC_PORTSPEED_8GBIT|
+			FC_PORTSPEED_4GBIT;
+	else if (IS_QLA25XX(ha) || IS_QLAFX00(ha))
+		speeds = FC_PORTSPEED_8GBIT|FC_PORTSPEED_4GBIT|
+			FC_PORTSPEED_2GBIT|FC_PORTSPEED_1GBIT;
 	else if (IS_QLA24XX_TYPE(ha))
-		speed = FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
-		    FC_PORTSPEED_1GBIT;
+		speeds = FC_PORTSPEED_4GBIT|FC_PORTSPEED_2GBIT|
+			FC_PORTSPEED_1GBIT;
 	else if (IS_QLA23XX(ha))
-		speed = FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
-	else if (IS_QLAFX00(ha))
-		speed = FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT |
-		    FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
-	else if (IS_QLA27XX(ha))
-		speed = FC_PORTSPEED_32GBIT | FC_PORTSPEED_16GBIT |
-		    FC_PORTSPEED_8GBIT;
-	else if (IS_QLA28XX(ha))
-		speed = FC_PORTSPEED_64GBIT | FC_PORTSPEED_32GBIT |
-		    FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT;
+		speeds = FC_PORTSPEED_2GBIT|FC_PORTSPEED_1GBIT;
 	else
-		speed = FC_PORTSPEED_1GBIT;
-	fc_host_supported_speeds(vha->host) = speed;
+		speeds = FC_PORTSPEED_1GBIT;
+
+	fc_host_supported_speeds(vha->host) = speeds;
 }
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index a4661306cc34..52289702174d 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -4223,8 +4223,8 @@ struct qla_hw_data {
 	struct qlt_hw_data tgt;
 	int	allow_cna_fw_dump;
 	uint32_t fw_ability_mask;
-	uint16_t min_link_speed;
-	uint16_t max_speed_sup;
+	uint16_t min_supported_speed;
+	uint16_t max_supported_speed;
 
 	/* DMA pool for the DIF bundling buffers */
 	struct dma_pool *dif_bundl_pool;
@@ -4455,7 +4455,7 @@ typedef struct scsi_qla_host {
 	int fcport_count;
 	wait_queue_head_t fcport_waitQ;
 	wait_queue_head_t vref_waitq;
-	uint8_t min_link_speed_feat;
+	uint8_t min_supported_speed;
 	uint8_t n2n_node_name[WWN_SIZE];
 	uint8_t n2n_port_name[WWN_SIZE];
 	uint16_t	n2n_id;
@@ -4738,4 +4738,5 @@ struct sff_8247_a0 {
 #include "qla_gbl.h"
 #include "qla_dbg.h"
 #include "qla_inline.h"
+
 #endif
diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index f7ff1d01a315..62b37775a7b8 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -1757,7 +1757,7 @@ struct nvram_81xx {
 	uint16_t reserved_6_3[14];
 
 	/* Offset 192. */
-	uint8_t min_link_speed;
+	uint8_t min_supported_speed;
 	uint8_t reserved_7_0;
 	uint16_t reserved_7[31];
 
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 304c21491d83..21a595027ce3 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -737,13 +737,14 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
 		if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
 			struct nvram_81xx *nv = ha->nvram;
 			/* set minimum speed if specified in nvram */
-			if (nv->min_link_speed >= 2 &&
-			    nv->min_link_speed <= 5) {
+			if (nv->min_supported_speed >= 2 &&
+			    nv->min_supported_speed <= 5) {
 				mcp->mb[4] |= BIT_4;
-				mcp->mb[11] = nv->min_link_speed;
+				mcp->mb[11] |= nv->min_supported_speed & 0xF;
 				mcp->out_mb |= MBX_11;
 				mcp->in_mb |= BIT_5;
-				vha->min_link_speed_feat = nv->min_link_speed;
+				vha->min_supported_speed =
+				    nv->min_supported_speed;
 			}
 		}
 
@@ -771,35 +772,39 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
 	if (rval != QLA_SUCCESS) {
 		ql_dbg(ql_dbg_mbx, vha, 0x1026,
 		    "Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
-	} else {
-		if (IS_FWI2_CAPABLE(ha)) {
-			ha->fw_ability_mask = mcp->mb[3] << 16 | mcp->mb[2];
-			ql_dbg(ql_dbg_mbx, vha, 0x119a,
-			    "fw_ability_mask=%x.\n", ha->fw_ability_mask);
-			ql_dbg(ql_dbg_mbx, vha, 0x1027,
-			    "exchanges=%x.\n", mcp->mb[1]);
-			if (IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
-			    IS_QLA28XX(ha)) {
-				ha->max_speed_sup = mcp->mb[2] & BIT_0;
-				ql_dbg(ql_dbg_mbx, vha, 0x119b,
-				    "Maximum speed supported=%s.\n",
-				    ha->max_speed_sup ? "32Gps" : "16Gps");
-				if (vha->min_link_speed_feat) {
-					ha->min_link_speed = mcp->mb[5];
-					ql_dbg(ql_dbg_mbx, vha, 0x119c,
-					    "Minimum speed set=%s.\n",
-					    mcp->mb[5] == 5 ? "32Gps" :
-					    mcp->mb[5] == 4 ? "16Gps" :
-					    mcp->mb[5] == 3 ? "8Gps" :
-					    mcp->mb[5] == 2 ? "4Gps" :
-						"unknown");
-				}
-			}
+		return rval;
+	}
+
+	if (!IS_FWI2_CAPABLE(ha))
+		goto done;
+
+	ha->fw_ability_mask = mcp->mb[3] << 16 | mcp->mb[2];
+	ql_dbg(ql_dbg_mbx, vha, 0x119a,
+	    "fw_ability_mask=%x.\n", ha->fw_ability_mask);
+	ql_dbg(ql_dbg_mbx, vha, 0x1027, "exchanges=%x.\n", mcp->mb[1]);
+	if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
+		ha->max_supported_speed = mcp->mb[2] & (BIT_0|BIT_1);
+		ql_dbg(ql_dbg_mbx, vha, 0x119b, "max_supported_speed=%s.\n",
+		    ha->max_supported_speed == 0 ? "16Gps" :
+		    ha->max_supported_speed == 1 ? "32Gps" :
+		    ha->max_supported_speed == 2 ? "64Gps" : "unknown");
+		if (vha->min_supported_speed) {
+			ha->min_supported_speed = mcp->mb[5] &
+			    (BIT_0 | BIT_1 | BIT_2);
+			ql_dbg(ql_dbg_mbx, vha, 0x119c,
+			    "min_supported_speed=%s.\n",
+			    ha->min_supported_speed == 6 ? "64Gps" :
+			    ha->min_supported_speed == 5 ? "32Gps" :
+			    ha->min_supported_speed == 4 ? "16Gps" :
+			    ha->min_supported_speed == 3 ? "8Gps" :
+			    ha->min_supported_speed == 2 ? "4Gps" : "unknown");
 		}
-		ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1028,
-		    "Done.\n");
 	}
 
+done:
+	ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1028,
+	    "Done %s.\n", __func__);
+
 	return rval;
 }