[SCSI] qla2xxx: Add BSG support for FC ELS/CT passthrough and vendor commands.

[jejb: fixed printk casting issues]
Signed-off-by: Sarang Radke <sarang.radke@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 745 insertions, 1 deletions

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 3a9f5b288aee..5a19aea17022 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -11,7 +11,9 @@
 #include <linux/delay.h>
 
 static int qla24xx_vport_disable(struct fc_vport *, bool);
-
+static int qla84xx_reset(scsi_qla_host_t *, struct msg_echo_lb *, struct fc_bsg_job *);
+int qla84xx_reset_chip(scsi_qla_host_t *, uint16_t, uint16_t *);
+static int qla84xx_mgmt_cmd(scsi_qla_host_t *, struct msg_echo_lb *, struct fc_bsg_job *);
 /* SYSFS attributes --------------------------------------------------------- */
 
 static ssize_t
@@ -1168,6 +1170,28 @@ qla2x00_total_isp_aborts_show(struct device *dev,
 }
 
 static ssize_t
+qla24xx_84xx_fw_version_show(struct device *dev,
+	struct device_attribute *attr, char *buf)
+{
+	int rval = QLA_SUCCESS;
+	uint16_t status[2] = {0, 0};
+	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));
+	struct qla_hw_data *ha = vha->hw;
+
+	if (IS_QLA84XX(ha) && ha->cs84xx) {
+		if (ha->cs84xx->op_fw_version == 0) {
+			rval = qla84xx_verify_chip(vha, status);
+	}
+
+	if ((rval == QLA_SUCCESS) && (status[0] == 0))
+		return snprintf(buf, PAGE_SIZE, "%u\n",
+			(uint32_t)ha->cs84xx->op_fw_version);
+	}
+
+	return snprintf(buf, PAGE_SIZE, "\n");
+}
+
+static ssize_t
 qla2x00_mpi_version_show(struct device *dev, struct device_attribute *attr,
     char *buf)
 {
@@ -1281,6 +1305,8 @@ static DEVICE_ATTR(optrom_fcode_version, S_IRUGO,
 		   qla2x00_optrom_fcode_version_show, NULL);
 static DEVICE_ATTR(optrom_fw_version, S_IRUGO, qla2x00_optrom_fw_version_show,
 		   NULL);
+static DEVICE_ATTR(84xx_fw_version, S_IRUGO, qla24xx_84xx_fw_version_show,
+		   NULL);
 static DEVICE_ATTR(total_isp_aborts, S_IRUGO, qla2x00_total_isp_aborts_show,
 		   NULL);
 static DEVICE_ATTR(mpi_version, S_IRUGO, qla2x00_mpi_version_show, NULL);
@@ -1310,6 +1336,7 @@ struct device_attribute *qla2x00_host_attrs[] = {
 	&dev_attr_optrom_efi_version,
 	&dev_attr_optrom_fcode_version,
 	&dev_attr_optrom_fw_version,
+	&dev_attr_84xx_fw_version,
 	&dev_attr_total_isp_aborts,
 	&dev_attr_mpi_version,
 	&dev_attr_phy_version,
@@ -1795,6 +1822,597 @@ qla24xx_vport_disable(struct fc_vport *fc_vport, bool disable)
 	return 0;
 }
 
+/* BSG support for ELS/CT pass through */
+inline srb_t *
+qla2x00_get_ctx_bsg_sp(scsi_qla_host_t *vha, fc_port_t *fcport, size_t size)
+{
+	srb_t *sp;
+	struct qla_hw_data *ha = vha->hw;
+	struct srb_bsg_ctx *ctx;
+
+	sp = mempool_alloc(ha->srb_mempool, GFP_KERNEL);
+	if (!sp)
+		goto done;
+	ctx = kzalloc(size, GFP_KERNEL);
+	if (!ctx) {
+		mempool_free(sp, ha->srb_mempool);
+		goto done;
+	}
+
+	memset(sp, 0, sizeof(*sp));
+	sp->fcport = fcport;
+	sp->ctx = ctx;
+done:
+	return sp;
+}
+
+static int
+qla2x00_process_els(struct fc_bsg_job *bsg_job)
+{
+	struct fc_rport *rport;
+	fc_port_t *fcport;
+	struct Scsi_Host *host;
+	scsi_qla_host_t *vha;
+	struct qla_hw_data *ha;
+	srb_t *sp;
+	const char *type;
+	int req_sg_cnt, rsp_sg_cnt;
+	int rval =  (DRIVER_ERROR << 16);
+	uint16_t nextlid = 0;
+	struct srb_bsg *els;
+
+	/*  Multiple SG's are not supported for ELS requests */
+        if (bsg_job->request_payload.sg_cnt > 1 ||
+		bsg_job->reply_payload.sg_cnt > 1) {
+		DEBUG2(printk(KERN_INFO
+		    "multiple SG's are not supported for ELS requests"
+		    " [request_sg_cnt: %x reply_sg_cnt: %x]\n",
+		    bsg_job->request_payload.sg_cnt,
+		    bsg_job->reply_payload.sg_cnt));
+		rval = -EPERM;
+		goto done;
+        }
+
+	/* ELS request for rport */
+	if (bsg_job->request->msgcode == FC_BSG_RPT_ELS) {
+		rport = bsg_job->rport;
+		fcport = *(fc_port_t **) rport->dd_data;
+		host = rport_to_shost(rport);
+		vha = shost_priv(host);
+		ha = vha->hw;
+		type = "FC_BSG_RPT_ELS";
+
+		DEBUG2(printk(KERN_INFO
+		    "scsi(%ld): loop-id=%x portid=%02x%02x%02x.\n",
+		    fcport->vha->host_no, fcport->loop_id,
+		    fcport->d_id.b.domain, fcport->d_id.b.area,
+		    fcport->d_id.b.al_pa));
+
+		/* make sure the rport is logged in,
+		 * if not perform fabric login
+		 */
+		if (qla2x00_fabric_login(vha, fcport, &nextlid)) {
+			DEBUG2(qla_printk(KERN_WARNING, ha,
+			    "failed to login port %06X for ELS passthru\n",
+			    fcport->d_id.b24));
+			rval = -EIO;
+			goto done;
+		}
+	} else {
+		host = bsg_job->shost;
+		vha = shost_priv(host);
+		ha = vha->hw;
+		type = "FC_BSG_HST_ELS_NOLOGIN";
+
+		DEBUG2(printk(KERN_INFO
+		    "scsi(%ld): loop-id=%x portid=%02x%02x%02x.\n",
+		    vha->host_no, vha->loop_id,
+		    vha->d_id.b.domain, vha->d_id.b.area, vha->d_id.b.al_pa));
+
+		/* Allocate a dummy fcport structure, since functions
+		 * preparing the IOCB and mailbox command retrieves port
+		 * specific information from fcport structure. For Host based
+		 * ELS commands there will be no fcport structure allocated
+		 */
+		fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
+		if (!fcport) {
+			rval = -ENOMEM;
+			goto done;
+		}
+
+		/* Initialize all required  fields of fcport */
+		fcport->vha = vha;
+		fcport->vp_idx = vha->vp_idx;
+		fcport->d_id.b.al_pa =
+		    bsg_job->request->rqst_data.h_els.port_id[0];
+		fcport->d_id.b.area =
+		    bsg_job->request->rqst_data.h_els.port_id[1];
+		fcport->d_id.b.domain =
+		    bsg_job->request->rqst_data.h_els.port_id[2];
+		fcport->loop_id =
+		    (fcport->d_id.b.al_pa == 0xFD) ?
+		    NPH_FABRIC_CONTROLLER : NPH_F_PORT;
+	}
+
+	DEBUG2(printk(KERN_INFO
+	    "scsi(%ld): vendor-id = %llu\n",
+	    vha->host_no, host->hostt->vendor_id));
+
+        req_sg_cnt =
+	    dma_map_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
+	    bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
+        if (!req_sg_cnt) {
+		rval = -ENOMEM;
+		goto done_free_fcport;
+	}
+        rsp_sg_cnt = dma_map_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
+	    bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
+        if (!rsp_sg_cnt) {
+		rval = -ENOMEM;
+                goto done_free_fcport;
+	}
+
+	if ((req_sg_cnt !=  bsg_job->request_payload.sg_cnt) ||
+	    (rsp_sg_cnt != bsg_job->reply_payload.sg_cnt))
+	{
+		DEBUG2(printk(KERN_INFO
+		    "dma mapping resulted in different sg counts \
+		    [request_sg_cnt: %x dma_request_sg_cnt: %x\
+		    reply_sg_cnt: %x dma_reply_sg_cnt: %x]\n",
+		    bsg_job->request_payload.sg_cnt, req_sg_cnt,
+		    bsg_job->reply_payload.sg_cnt, rsp_sg_cnt));
+		rval = -EAGAIN;
+                goto done_unmap_sg;
+	}
+
+	/* Alloc SRB structure */
+	sp = qla2x00_get_ctx_bsg_sp(vha, fcport, sizeof(struct srb_bsg));
+	if (!sp) {
+		rval = -ENOMEM;
+                goto done_unmap_sg;
+	}
+
+	els = sp->ctx;
+	els->ctx.type =
+	    (bsg_job->request->msgcode == FC_BSG_RPT_ELS ?
+	    SRB_ELS_CMD_RPT : SRB_ELS_CMD_HST);
+	els->bsg_job = bsg_job;
+
+	DEBUG2(qla_printk(KERN_INFO, ha,
+	    "scsi(%ld:%x): bsg rqst type: %s els type: %x - loop-id=%x "
+	    "portid=%02x%02x%02x.\n", vha->host_no, sp->handle, type,
+	    bsg_job->request->rqst_data.h_els.command_code,
+	    fcport->loop_id, fcport->d_id.b.domain, fcport->d_id.b.area,
+	    fcport->d_id.b.al_pa));
+
+	rval = qla2x00_start_sp(sp);
+	if (rval != QLA_SUCCESS) {
+		kfree(sp->ctx);
+		mempool_free(sp, ha->srb_mempool);
+		rval = -EIO;
+		goto done_unmap_sg;
+	}
+	return rval;
+
+done_unmap_sg:
+	dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
+		bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
+	dma_unmap_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
+		bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
+	goto done_free_fcport;
+
+done_free_fcport:
+	if (bsg_job->request->msgcode == FC_BSG_HST_ELS_NOLOGIN)
+		kfree(fcport);
+done:
+	return rval;
+}
+
+static int
+qla2x00_process_ct(struct fc_bsg_job *bsg_job)
+{
+	srb_t *sp;
+	struct Scsi_Host *host = bsg_job->shost;
+	scsi_qla_host_t *vha = shost_priv(host);
+	struct qla_hw_data *ha = vha->hw;
+	int rval = (DRIVER_ERROR << 16);
+	int req_sg_cnt, rsp_sg_cnt;
+	uint16_t loop_id;
+	struct fc_port *fcport;
+	char  *type = "FC_BSG_HST_CT";
+	struct srb_bsg *ct;
+
+	/* pass through is supported only for ISP 4Gb or higher */
+        if (!IS_FWI2_CAPABLE(ha)) {
+		DEBUG2(qla_printk(KERN_INFO, ha,
+		    "scsi(%ld):Firmware is not capable to support FC "
+		    "CT pass thru\n", vha->host_no));
+		rval = -EPERM;
+                goto done;
+	}
+
+        req_sg_cnt =
+	    dma_map_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
+	    bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
+        if (!req_sg_cnt) {
+		rval = -ENOMEM;
+		goto done;
+	}
+
+        rsp_sg_cnt = dma_map_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
+            bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
+        if (!rsp_sg_cnt) {
+		rval = -ENOMEM;
+                goto done;
+	}
+
+	if ((req_sg_cnt !=  bsg_job->request_payload.sg_cnt) ||
+		(rsp_sg_cnt != bsg_job->reply_payload.sg_cnt))
+	{
+		DEBUG2(qla_printk(KERN_WARNING, ha,
+		    "dma mapping resulted in different sg counts \
+		    [request_sg_cnt: %x dma_request_sg_cnt: %x\
+		    reply_sg_cnt: %x dma_reply_sg_cnt: %x]\n",
+		    bsg_job->request_payload.sg_cnt, req_sg_cnt,
+		    bsg_job->reply_payload.sg_cnt, rsp_sg_cnt));
+		rval = -EAGAIN;
+                goto done_unmap_sg;
+	}
+
+	loop_id =
+	    (bsg_job->request->rqst_data.h_ct.preamble_word1 & 0xFF000000)
+	    >> 24;
+	switch (loop_id) {
+		case 0xFC:
+			loop_id = cpu_to_le16(NPH_SNS);
+			break;
+		case 0xFA:
+			loop_id = vha->mgmt_svr_loop_id;
+			break;
+		default:
+			DEBUG2(qla_printk(KERN_INFO, ha,
+			    "Unknown loop id: %x\n", loop_id));
+			rval = -EINVAL;
+			goto done_unmap_sg;
+	}
+
+	/* Allocate a dummy fcport structure, since functions preparing the
+	 * IOCB and mailbox command retrieves port specific information
+	 * from fcport structure. For Host based ELS commands there will be
+	 * no fcport structure allocated
+	 */
+	fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
+	if (!fcport)
+	{
+		rval = -ENOMEM;
+		goto  done_unmap_sg;
+	}
+
+	/* Initialize all required  fields of fcport */
+	fcport->vha = vha;
+	fcport->vp_idx = vha->vp_idx;
+	fcport->d_id.b.al_pa = bsg_job->request->rqst_data.h_ct.port_id[0];
+	fcport->d_id.b.area = bsg_job->request->rqst_data.h_ct.port_id[1];
+	fcport->d_id.b.domain = bsg_job->request->rqst_data.h_ct.port_id[2];
+	fcport->loop_id = loop_id;
+
+	/* Alloc SRB structure */
+	sp = qla2x00_get_ctx_bsg_sp(vha, fcport, sizeof(struct srb_bsg));
+	if (!sp) {
+		rval = -ENOMEM;
+		goto done_free_fcport;
+	}
+
+	ct = sp->ctx;
+	ct->ctx.type = SRB_CT_CMD;
+	ct->bsg_job = bsg_job;
+
+	DEBUG2(qla_printk(KERN_INFO, ha,
+	    "scsi(%ld:%x): bsg rqst type: %s els type: %x - loop-id=%x "
+	    "portid=%02x%02x%02x.\n", vha->host_no, sp->handle, type,
+	    (bsg_job->request->rqst_data.h_ct.preamble_word2 >> 16),
+	    fcport->loop_id, fcport->d_id.b.domain, fcport->d_id.b.area,
+	    fcport->d_id.b.al_pa));
+
+	rval = qla2x00_start_sp(sp);
+	if (rval != QLA_SUCCESS) {
+		kfree(sp->ctx);
+		mempool_free(sp, ha->srb_mempool);
+		rval = -EIO;
+		goto done_free_fcport;
+	}
+	return rval;
+
+done_free_fcport:
+	kfree(fcport);
+done_unmap_sg:
+	dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
+	    bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
+	dma_unmap_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
+	    bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
+done:
+	return rval;
+}
+
+static int
+qla2x00_process_vendor_specific(struct fc_bsg_job *bsg_job)
+{
+	struct Scsi_Host *host = bsg_job->shost;
+	scsi_qla_host_t *vha = shost_priv(host);
+	struct qla_hw_data *ha = vha->hw;
+	int rval;
+	uint8_t command_sent;
+	uint32_t vendor_cmd;
+	char *type;
+	struct msg_echo_lb elreq;
+	uint16_t response[MAILBOX_REGISTER_COUNT];
+	uint8_t* fw_sts_ptr;
+	uint8_t *req_data;
+	dma_addr_t req_data_dma;
+	uint32_t req_data_len;
+	uint8_t *rsp_data;
+	dma_addr_t rsp_data_dma;
+	uint32_t rsp_data_len;
+
+	if (test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
+	    test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags) ||
+	    test_bit(ISP_ABORT_RETRY, &vha->dpc_flags)) {
+		rval = -EBUSY;
+		goto done;
+	}
+
+        elreq.req_sg_cnt =
+	    dma_map_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
+	    bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
+        if (!elreq.req_sg_cnt) {
+		rval = -ENOMEM;
+		goto done;
+	}
+        elreq.rsp_sg_cnt =
+	    dma_map_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
+	    bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
+        if (!elreq.rsp_sg_cnt) {
+		rval = -ENOMEM;
+                goto done;
+	}
+
+	if ((elreq.req_sg_cnt !=  bsg_job->request_payload.sg_cnt) ||
+	    (elreq.rsp_sg_cnt != bsg_job->reply_payload.sg_cnt))
+	{
+		DEBUG2(printk(KERN_INFO
+		    "dma mapping resulted in different sg counts \
+		    [request_sg_cnt: %x dma_request_sg_cnt: %x\
+		    reply_sg_cnt: %x dma_reply_sg_cnt: %x]\n",
+		    bsg_job->request_payload.sg_cnt, elreq.req_sg_cnt,
+		    bsg_job->reply_payload.sg_cnt, elreq.rsp_sg_cnt));
+		rval = -EAGAIN;
+                goto done_unmap_sg;
+	}
+	req_data_len = rsp_data_len = bsg_job->request_payload.payload_len;
+	req_data = dma_alloc_coherent(&ha->pdev->dev, req_data_len,
+	    &req_data_dma, GFP_KERNEL);
+
+	rsp_data = dma_alloc_coherent(&ha->pdev->dev, rsp_data_len,
+	    &rsp_data_dma, GFP_KERNEL);
+
+	/* Copy the request buffer in req_data now */
+	sg_copy_to_buffer(bsg_job->request_payload.sg_list,
+	    bsg_job->request_payload.sg_cnt, req_data,
+	    req_data_len);
+
+	elreq.send_dma = req_data_dma;
+	elreq.rcv_dma = rsp_data_dma;
+	elreq.transfer_size = req_data_len;
+
+	/* Vendor cmd : loopback or ECHO diagnostic
+	 * Options:
+	 * 	Loopback : Either internal or external loopback
+	 * 	ECHO: ECHO ELS or Vendor specific FC4  link data
+	 */
+	vendor_cmd = bsg_job->request->rqst_data.h_vendor.vendor_cmd[0];
+	elreq.options =
+	    *(((uint32_t *)bsg_job->request->rqst_data.h_vendor.vendor_cmd)
+	    + 1);
+
+	switch (bsg_job->request->rqst_data.h_vendor.vendor_cmd[0]) {
+	case QL_VND_LOOPBACK:
+		if (ha->current_topology != ISP_CFG_F) {
+			type = "FC_BSG_HST_VENDOR_LOOPBACK";
+
+			if ((IS_QLA81XX(ha)) &&
+				((elreq.options == 0) || (elreq.options == 2))) {
+				DEBUG2(qla_printk(KERN_INFO, ha, "scsi(%ld)"
+				"loopback option:0x%x not supported\n", vha->host_no, elreq.options));
+				rval = -EINVAL;
+				goto done_unmap_sg;
+			}
+
+			DEBUG2(qla_printk(KERN_INFO, ha,
+				"scsi(%ld) bsg rqst type: %s vendor rqst type: %x options: %x.\n",
+				vha->host_no, type, vendor_cmd, elreq.options));
+			DEBUG2(qla_printk(KERN_INFO, ha,
+				"scsi(%ld) tx_addr: 0x%llx rx_addr: 0x%llx tx_sg_cnt: %x rx_sg_cnt: %x\n",
+				vha->host_no, (unsigned long long)elreq.send_dma, (unsigned long long)elreq.rcv_dma, elreq.req_sg_cnt, elreq.rsp_sg_cnt));
+			command_sent = INT_DEF_LB_LOOPBACK_CMD;
+			rval = qla2x00_loopback_test(vha, &elreq, response);
+			if (IS_QLA81XX(ha)) {
+				if (response[0] == MBS_COMMAND_ERROR && response[1] == MBS_LB_RESET) {
+					DEBUG2(printk(KERN_ERR "%s(%ld): ABORTing "
+						"ISP\n", __func__, vha->host_no));
+					set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+					qla2xxx_wake_dpc(vha);
+				 }
+			}
+		} else {
+			type = "FC_BSG_HST_VENDOR_ECHO_DIAG";
+			DEBUG2(qla_printk(KERN_INFO, ha,
+				"scsi(%ld) bsg rqst type: %s vendor rqst type: %x options: %x.\n",
+				vha->host_no, type, vendor_cmd, elreq.options));
+			DEBUG2(qla_printk(KERN_INFO, ha,
+				"scsi(%ld) tx_addr: 0x%llx rx_addr: 0x%llx tx_sg_cnt: %x rx_sg_cnt: %x\n",
+				vha->host_no, (unsigned long long)elreq.send_dma, (unsigned long long)elreq.rcv_dma, elreq.req_sg_cnt, elreq.rsp_sg_cnt));
+			command_sent = INT_DEF_LB_ECHO_CMD;
+			rval = qla2x00_echo_test(vha, &elreq, response);
+		}
+		break;
+	case QLA84_RESET:
+		if (!IS_QLA84XX(vha->hw)) {
+			rval = -EINVAL;
+			DEBUG16(printk(
+				"%s(%ld): 8xxx exiting.\n",
+				__func__, vha->host_no));
+			return rval;
+		}
+		rval = qla84xx_reset(vha, &elreq, bsg_job);
+		break;
+	case QLA84_MGMT_CMD:
+		if (!IS_QLA84XX(vha->hw)) {
+			rval = -EINVAL;
+			DEBUG16(printk(
+				"%s(%ld): 8xxx exiting.\n",
+				__func__, vha->host_no));
+			return rval;
+		}
+		rval = qla84xx_mgmt_cmd(vha, &elreq, bsg_job);
+		break;
+	default:
+		rval = -ENOSYS;
+	}
+
+	if (rval != QLA_SUCCESS) {
+		DEBUG2(qla_printk(KERN_WARNING, ha,
+			"scsi(%ld) Vendor request %s failed\n", vha->host_no, type));
+		rval = 0;
+		bsg_job->reply->result = (DID_ERROR << 16);
+		fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
+		memcpy( fw_sts_ptr, response, sizeof(response));
+		fw_sts_ptr += sizeof(response);
+                *fw_sts_ptr = command_sent;
+	} else {
+		DEBUG2(qla_printk(KERN_WARNING, ha,
+			"scsi(%ld) Vendor request %s completed\n", vha->host_no, type));
+		rval = bsg_job->reply->result = 0;
+		bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(response) + sizeof(uint8_t);
+		bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
+		fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
+		memcpy(fw_sts_ptr, response, sizeof(response));
+		fw_sts_ptr += sizeof(response);
+		*fw_sts_ptr = command_sent;
+		sg_copy_from_buffer(bsg_job->reply_payload.sg_list,
+		bsg_job->reply_payload.sg_cnt, rsp_data,
+		rsp_data_len);
+	}
+	bsg_job->job_done(bsg_job);
+
+done_unmap_sg:
+
+	if(req_data)
+		dma_free_coherent(&ha->pdev->dev, req_data_len,
+			req_data, req_data_dma);
+	dma_unmap_sg(&ha->pdev->dev,
+	    bsg_job->request_payload.sg_list,
+	    bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
+	dma_unmap_sg(&ha->pdev->dev,
+	    bsg_job->reply_payload.sg_list,
+	    bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
+
+done:
+        return rval;
+}
+
+static int
+qla24xx_bsg_request(struct fc_bsg_job *bsg_job)
+{
+        int ret = -EINVAL;
+
+        switch (bsg_job->request->msgcode) {
+		case FC_BSG_RPT_ELS:
+		case FC_BSG_HST_ELS_NOLOGIN:
+			ret = qla2x00_process_els(bsg_job);
+			break;
+		case FC_BSG_HST_CT:
+			ret = qla2x00_process_ct(bsg_job);
+			break;
+		case FC_BSG_HST_VENDOR:
+			ret = qla2x00_process_vendor_specific(bsg_job);
+			break;
+		case FC_BSG_HST_ADD_RPORT:
+		case FC_BSG_HST_DEL_RPORT:
+		case FC_BSG_RPT_CT:
+		default:
+			DEBUG2(printk("qla2xxx: unsupported BSG request\n"));
+			break;
+        }
+	return ret;
+}
+
+static int
+qla24xx_bsg_timeout(struct fc_bsg_job *bsg_job)
+{
+        scsi_qla_host_t *vha = shost_priv(bsg_job->shost);
+        struct qla_hw_data *ha = vha->hw;
+        srb_t *sp;
+        int i;
+        unsigned long flags;
+        uint16_t que_id;
+        struct req_que *req;
+        struct rsp_que *rsp;
+	int found = 0;
+	struct srb_bsg *sp_bsg;
+
+	/* find the bsg job from the active list of commands */
+        spin_lock_irqsave(&ha->hardware_lock, flags);
+	req = ha->req_q_map[0];
+        que_id = req->id;
+        if (req->rsp)
+                rsp = req->rsp;
+        else
+                rsp = ha->rsp_q_map[que_id];
+
+	for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++ ) {
+                sp = req->outstanding_cmds[i];
+
+                if (sp == NULL)
+                        continue;
+
+		sp_bsg = (struct srb_bsg*)sp->ctx;
+
+		if (((sp_bsg->ctx.type == SRB_CT_CMD) ||
+		    (sp_bsg->ctx.type == SRB_ELS_CMD_RPT)
+		    || ( sp_bsg->ctx.type == SRB_ELS_CMD_HST)) &&
+		    (sp_bsg->bsg_job == bsg_job)) {
+			DEBUG2(qla_printk(KERN_INFO, ha,
+			    "scsi(%ld) req_q: %p rsp_q: %p que_id: %x sp: %p\n",
+			    vha->host_no, req, rsp, que_id, sp));
+			found = 1;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	if (!found) {
+		DEBUG2(qla_printk(KERN_INFO, ha,
+			"scsi(%ld) SRB not found to abort\n", vha->host_no));
+		bsg_job->req->errors = bsg_job->reply->result = -ENXIO;
+		return 0;
+	}
+
+	if (ha->isp_ops->abort_command(sp)) {
+		DEBUG2(qla_printk(KERN_INFO, ha,
+		"scsi(%ld): mbx abort_command failed\n", vha->host_no));
+		bsg_job->req->errors = bsg_job->reply->result = -EIO;
+	} else {
+		DEBUG2(qla_printk(KERN_INFO, ha,
+		"scsi(%ld): mbx abort_command success\n", vha->host_no));
+		bsg_job->req->errors = bsg_job->reply->result = 0;
+	}
+
+	if (bsg_job->request->msgcode == FC_BSG_HST_CT)
+		kfree(sp->fcport);
+	kfree(sp->ctx);
+	mempool_free(sp, ha->srb_mempool);
+	return 0;
+}
+
 struct fc_function_template qla2xxx_transport_functions = {
 
 	.show_host_node_name = 1,
@@ -1838,6 +2456,8 @@ struct fc_function_template qla2xxx_transport_functions = {
 	.vport_create = qla24xx_vport_create,
 	.vport_disable = qla24xx_vport_disable,
 	.vport_delete = qla24xx_vport_delete,
+	.bsg_request = qla24xx_bsg_request,
+	.bsg_timeout = qla24xx_bsg_timeout,
 };
 
 struct fc_function_template qla2xxx_transport_vport_functions = {
@@ -1878,6 +2498,8 @@ struct fc_function_template qla2xxx_transport_vport_functions = {
 	.dev_loss_tmo_callbk = qla2x00_dev_loss_tmo_callbk,
 	.terminate_rport_io = qla2x00_terminate_rport_io,
 	.get_fc_host_stats = qla2x00_get_fc_host_stats,
+	.bsg_request = qla24xx_bsg_request,
+	.bsg_timeout = qla24xx_bsg_timeout,
 };
 
 void
@@ -1906,3 +2528,125 @@ qla2x00_init_host_attr(scsi_qla_host_t *vha)
 		speed = FC_PORTSPEED_1GBIT;
 	fc_host_supported_speeds(vha->host) = speed;
 }
+static int
+qla84xx_reset(scsi_qla_host_t *ha, struct msg_echo_lb *mreq, struct fc_bsg_job *bsg_job)
+{
+	int             ret = 0;
+	int             cmd;
+	uint16_t        cmd_status;
+
+	DEBUG16(printk("%s(%ld): entered.\n", __func__, ha->host_no));
+
+	cmd = (*((bsg_job->request->rqst_data.h_vendor.vendor_cmd) + 2))
+			== A84_RESET_FLAG_ENABLE_DIAG_FW ?
+				A84_ISSUE_RESET_DIAG_FW : A84_ISSUE_RESET_OP_FW;
+	ret = qla84xx_reset_chip(ha, cmd == A84_ISSUE_RESET_DIAG_FW,
+	&cmd_status);
+	return ret;
+}
+
+static int
+qla84xx_mgmt_cmd(scsi_qla_host_t *ha, struct msg_echo_lb *mreq, struct fc_bsg_job *bsg_job)
+{
+	struct access_chip_84xx *mn;
+	dma_addr_t mn_dma, mgmt_dma;
+	void *mgmt_b = NULL;
+	int ret = 0;
+	int rsp_hdr_len, len = 0;
+	struct qla84_msg_mgmt *ql84_mgmt;
+
+	ql84_mgmt = (struct qla84_msg_mgmt *) vmalloc(sizeof(struct qla84_msg_mgmt));
+	ql84_mgmt->cmd =
+		*((uint16_t *)(bsg_job->request->rqst_data.h_vendor.vendor_cmd + 2));
+	ql84_mgmt->mgmtp.u.mem.start_addr =
+		*((uint32_t *)(bsg_job->request->rqst_data.h_vendor.vendor_cmd + 3));
+	ql84_mgmt->len =
+		*((uint32_t *)(bsg_job->request->rqst_data.h_vendor.vendor_cmd + 4));
+	ql84_mgmt->mgmtp.u.config.id =
+		*((uint32_t *)(bsg_job->request->rqst_data.h_vendor.vendor_cmd + 5));
+	ql84_mgmt->mgmtp.u.config.param0 =
+		*((uint32_t *)(bsg_job->request->rqst_data.h_vendor.vendor_cmd + 6));
+	ql84_mgmt->mgmtp.u.config.param1 =
+		*((uint32_t *)(bsg_job->request->rqst_data.h_vendor.vendor_cmd + 7));
+	ql84_mgmt->mgmtp.u.info.type =
+		*((uint32_t *)(bsg_job->request->rqst_data.h_vendor.vendor_cmd + 8));
+	ql84_mgmt->mgmtp.u.info.context =
+		*((uint32_t *)(bsg_job->request->rqst_data.h_vendor.vendor_cmd + 9));
+
+	rsp_hdr_len = bsg_job->request_payload.payload_len;
+
+	mn = dma_pool_alloc(ha->hw->s_dma_pool, GFP_KERNEL, &mn_dma);
+	if (mn == NULL) {
+		DEBUG2(printk(KERN_ERR "%s: dma alloc for fw buffer "
+		"failed%lu\n", __func__, ha->host_no));
+		return -ENOMEM;
+	}
+
+	memset(mn, 0, sizeof (struct access_chip_84xx));
+
+	mn->entry_type = ACCESS_CHIP_IOCB_TYPE;
+	mn->entry_count = 1;
+
+	switch (ql84_mgmt->cmd) {
+	case QLA84_MGMT_READ_MEM:
+		mn->options = cpu_to_le16(ACO_DUMP_MEMORY);
+		mn->parameter1 = cpu_to_le32(ql84_mgmt->mgmtp.u.mem.start_addr);
+		break;
+	case QLA84_MGMT_WRITE_MEM:
+		mn->options = cpu_to_le16(ACO_LOAD_MEMORY);
+		mn->parameter1 = cpu_to_le32(ql84_mgmt->mgmtp.u.mem.start_addr);
+		break;
+	case QLA84_MGMT_CHNG_CONFIG:
+		mn->options = cpu_to_le16(ACO_CHANGE_CONFIG_PARAM);
+		mn->parameter1 = cpu_to_le32(ql84_mgmt->mgmtp.u.config.id);
+		mn->parameter2 = cpu_to_le32(ql84_mgmt->mgmtp.u.config.param0);
+		mn->parameter3 = cpu_to_le32(ql84_mgmt->mgmtp.u.config.param1);
+		break;
+	case QLA84_MGMT_GET_INFO:
+		mn->options = cpu_to_le16(ACO_REQUEST_INFO);
+		mn->parameter1 = cpu_to_le32(ql84_mgmt->mgmtp.u.info.type);
+		mn->parameter2 = cpu_to_le32(ql84_mgmt->mgmtp.u.info.context);
+		break;
+	default:
+		ret = -EIO;
+		goto exit_mgmt0;
+	}
+
+	if ((len == ql84_mgmt->len) &&
+		ql84_mgmt->cmd != QLA84_MGMT_CHNG_CONFIG) {
+		mgmt_b = dma_alloc_coherent(&ha->hw->pdev->dev, len,
+				&mgmt_dma, GFP_KERNEL);
+		if (mgmt_b == NULL) {
+			DEBUG2(printk(KERN_ERR "%s: dma alloc mgmt_b "
+			"failed%lu\n", __func__, ha->host_no));
+			ret = -ENOMEM;
+			goto exit_mgmt0;
+		}
+		mn->total_byte_cnt = cpu_to_le32(ql84_mgmt->len);
+		mn->dseg_count = cpu_to_le16(1);
+		mn->dseg_address[0] = cpu_to_le32(LSD(mgmt_dma));
+		mn->dseg_address[1] = cpu_to_le32(MSD(mgmt_dma));
+		mn->dseg_length = cpu_to_le32(len);
+
+		if (ql84_mgmt->cmd == QLA84_MGMT_WRITE_MEM) {
+			memcpy(mgmt_b, ql84_mgmt->payload, len);
+		}
+	}
+
+	ret = qla2x00_issue_iocb(ha, mn, mn_dma, 0);
+	if ((ret != QLA_SUCCESS) || (ql84_mgmt->cmd == QLA84_MGMT_WRITE_MEM)
+		|| (ql84_mgmt->cmd == QLA84_MGMT_CHNG_CONFIG)) {
+			if (ret != QLA_SUCCESS)
+				DEBUG2(printk(KERN_ERR "%s(%lu): failed\n",
+					__func__, ha->host_no));
+	} else if ((ql84_mgmt->cmd == QLA84_MGMT_READ_MEM) ||
+			(ql84_mgmt->cmd == QLA84_MGMT_GET_INFO)) {
+	}
+
+	if (mgmt_b)
+		dma_free_coherent(&ha->hw->pdev->dev, len, mgmt_b, mgmt_dma);
+
+exit_mgmt0:
+	dma_pool_free(ha->hw->s_dma_pool, mn, mn_dma);
+	return ret;
+}