scsi: qedf: Enable basic FDMI information.

For libfc to register FDMI attributes we need to do two things:

- Set the appropriate fc_host attributes that libfc will use to form the
  FDMI registration commands
- Set lport->fdmi_enabled to 1
Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qedf/qedf_main.c

@@ -22,6 +22,7 @@
 #include <linux/if_vlan.h>
 #include <linux/cpu.h>
 #include "qedf.h"
+#include <uapi/linux/pci_regs.h>
 
 const struct qed_fcoe_ops *qed_ops;
 
@@ -1334,6 +1335,59 @@ static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
 	ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
 }
 
+static void qedf_setup_fdmi(struct qedf_ctx *qedf)
+{
+	struct fc_lport *lport = qedf->lport;
+	struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
+	u8 buf[8];
+	int i, pos;
+
+	/*
+	 * fdmi_enabled needs to be set for libfc to execute FDMI registration.
+	 */
+	lport->fdmi_enabled = 1;
+
+	/*
+	 * Setup the necessary fc_host attributes to that will be used to fill
+	 * in the FDMI information.
+	 */
+
+	/* Get the PCI-e Device Serial Number Capability */
+	pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
+	if (pos) {
+		pos += 4;
+		for (i = 0; i < 8; i++)
+			pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
+
+		snprintf(fc_host->serial_number,
+		    sizeof(fc_host->serial_number),
+		    "%02X%02X%02X%02X%02X%02X%02X%02X",
+		    buf[7], buf[6], buf[5], buf[4],
+		    buf[3], buf[2], buf[1], buf[0]);
+	} else
+		snprintf(fc_host->serial_number,
+		    sizeof(fc_host->serial_number), "Unknown");
+
+	snprintf(fc_host->manufacturer,
+	    sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
+
+	snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
+
+	snprintf(fc_host->model_description, sizeof(fc_host->model_description),
+	    "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
+	    "(FCoE)");
+
+	snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
+	    "Rev %d", qedf->pdev->revision);
+
+	snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
+	    "%s", QEDF_VERSION);
+
+	snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
+	    "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
+	    FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
+}
+
 static int qedf_lport_setup(struct qedf_ctx *qedf)
 {
 	struct fc_lport *lport = qedf->lport;
@@ -1377,6 +1431,8 @@ static int qedf_lport_setup(struct qedf_ctx *qedf)
 	snprintf(fc_host_symbolic_name(lport->host), 256,
 	    "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
 
+	qedf_setup_fdmi(qedf);
+
 	return 0;
 }