[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;
+}