[RFC] [PATCH 5/7] qla4xxx: driver mailbox routines

[David Somayajulu <david.somayajulu@qlogic.com>]

qla4xxx driver Mailbox routines.

Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
---
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
new file mode 100644
index 0000000..e4b9107
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -0,0 +1,1092 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+
+/**************************************************************************
+ * qla4xxx_mailbox_command
+ *	This routine sssue mailbox commands and waits for completion.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *	inCount	 - number of mailbox registers to load.
+ *	outCount - number of mailbox registers to return.
+ *	mbx_cmd	 - data pointer for mailbox in registers.
+ *	mbx_sts	 - data pointer for mailbox out registers.
+ *
+ * Output:
+ *	mbx_sts - returned mailbox out data.
+ *
+ * Remarks:
+ *	If outCount is 0, this routine completes successfully WITHOUT waiting
+ *	for the mailbox command to complete.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Mailbox command completed successfully
+ *	QLA_ERROR   - Mailbox command competed in error.
+ **************************************************************************/
+int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
+			    uint8_t outCount, uint32_t *mbx_cmd,
+			    uint32_t *mbx_sts)
+{
+	int status = QLA_ERROR;
+	uint8_t i;
+	u_long wait_count;
+	uint32_t intr_status;
+	unsigned long flags = 0;
+	DECLARE_WAITQUEUE(wait, current);
+
+	mutex_lock(&ha->mbox_sem);
+
+	/* Mailbox code active */
+	set_bit(AF_MBOX_COMMAND, &ha->flags);
+
+	/* Make sure that pointers are valid */
+	if (!mbx_cmd || !mbx_sts) {
+		DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
+			      "pointer\n", ha->host_no, __func__));
+		goto mbox_exit;
+	}
+
+	/* To prevent overwriting mailbox registers for a command that has
+	 * not yet been serviced, check to see if a previously issued
+	 * mailbox command is interrupting.
+	 * -----------------------------------------------------------------
+	 */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	intr_status = readl(&ha->reg->ctrl_status);
+	if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
+		/* Service existing interrupt */
+		qla4xxx_interrupt_service_routine(ha, intr_status);
+		clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+	}
+
+	/* Send the mailbox command to the firmware */
+	ha->mbox_status_count = outCount;
+	for (i = 0; i < outCount; i++)
+		ha->mbox_status[i] = 0;
+
+	/* Load all mailbox registers, except mailbox 0. */
+	for (i = 1; i < inCount; i++)
+		writel(mbx_cmd[i], &ha->reg->mailbox[i]);
+
+	/* Wakeup firmware  */
+	writel(mbx_cmd[0], &ha->reg->mailbox[0]);
+	readl(&ha->reg->mailbox[0]);
+	writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
+	readl(&ha->reg->ctrl_status);
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+	/* Wait for completion */
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	add_wait_queue(&ha->mailbox_wait_queue, &wait);
+
+	/*
+	 * If we don't want status, don't wait for the mailbox command to
+	 * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
+	 * you must poll the inbound Interrupt Mask for completion.
+	 */
+	if (outCount == 0) {
+		status = QLA_SUCCESS;
+		set_current_state(TASK_RUNNING);
+		remove_wait_queue(&ha->mailbox_wait_queue, &wait);
+		goto mbox_exit;
+	}
+	/* Wait for command to complete */
+	wait_count = jiffies + MBOX_TOV * HZ;
+	while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
+		if (time_after_eq(jiffies, wait_count))
+			break;
+
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		intr_status = readl(&ha->reg->ctrl_status);
+		if (intr_status & INTR_PENDING) {
+			/*
+			 * Service the interrupt.
+			 * The ISR will save the mailbox status registers
+			 * to a temporary storage location in the adapter
+			 * structure.
+			 */
+			ha->mbox_status_count = outCount;
+			qla4xxx_interrupt_service_routine(ha, intr_status);
+		}
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		mdelay(10);
+	}
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&ha->mailbox_wait_queue, &wait);
+
+	/* Check for mailbox timeout. */
+	if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
+		DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
+			      " Scheduling Adapter Reset\n", ha->host_no,
+			      mbx_cmd[0]));
+		ha->mailbox_timeout_count++;
+		mbx_sts[0] = (-1);
+		set_bit(DPC_RESET_HA, &ha->dpc_flags);
+		goto mbox_exit;
+	}
+
+	/*
+	 * Copy the mailbox out registers to the caller's mailbox in/out
+	 * structure.
+	 */
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	for (i = 0; i < outCount; i++)
+		mbx_sts[i] = ha->mbox_status[i];
+
+	/* Set return status and error flags (if applicable). */
+	switch (ha->mbox_status[0]) {
+	case MBOX_STS_COMMAND_COMPLETE:
+		status = QLA_SUCCESS;
+		break;
+
+	case MBOX_STS_INTERMEDIATE_COMPLETION:
+		status = QLA_SUCCESS;
+		break;
+
+	case MBOX_STS_BUSY:
+		DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
+			       ha->host_no, __func__, mbx_cmd[0]));
+		ha->mailbox_timeout_count++;
+		break;
+
+	default:
+		DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
+			      "sts = %08X ****\n", ha->host_no, __func__,
+			      mbx_cmd[0], mbx_sts[0]));
+		break;
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+mbox_exit:
+	clear_bit(AF_MBOX_COMMAND, &ha->flags);
+	clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+	mutex_unlock(&ha->mbox_sem);
+
+	return status;
+}
+
+
+/*
+ * qla4xxx_issue_iocb
+ *	Issue IOCB using mailbox command
+ *
+ * Input:
+ *	ha = adapter state pointer.
+ *	buffer = buffer pointer.
+ *	phys_addr = physical address of buffer.
+ *	size = size of buffer.
+ *	TARGET_QUEUE_LOCK must be released.
+ *	ADAPTER_STATE_LOCK must be released.
+ *
+ * Returns:
+ *	qla2x00 local function return status code.
+ */
+int
+qla4xxx_issue_iocb(struct scsi_qla_host * ha, void *buffer,
+		   dma_addr_t phys_addr, size_t size)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+	int status;
+
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_EXECUTE_IOCB_A64;
+	mbox_cmd[1] = 0;
+	mbox_cmd[2] = LSDW(phys_addr);
+	mbox_cmd[3] = MSDW(phys_addr);
+	status = qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
+	return status;
+}
+
+int qla4xxx_conn_close_sess_logout(struct scsi_qla_host * ha,
+				   uint16_t fw_ddb_index,
+				   uint16_t connection_id,
+				   uint16_t option)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
+	mbox_cmd[1] = fw_ddb_index;
+	mbox_cmd[2] = connection_id;
+	mbox_cmd[3] = LOGOUT_OPTION_RELOGIN;
+	if (qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
+			      "option %04x failed sts %04X %04X",
+			      ha->host_no, __func__,
+			      option, mbox_sts[0], mbox_sts[1]));
+		if (mbox_sts[0] == 0x4005)
+			DEBUG2(printk("%s reason %04X\n", __func__,
+				      mbox_sts[1]));
+	}
+	return QLA_SUCCESS;
+}
+
+int qla4xxx_clear_database_entry(struct scsi_qla_host * ha,
+				 uint16_t fw_ddb_index)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
+	mbox_cmd[1] = fw_ddb_index;
+	if (qla4xxx_mailbox_command(ha, 2, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS)
+		return QLA_ERROR;
+
+	return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_initialize_fw_cb
+ *	This routine initializes the firmware control block for the
+ *	specified adapter.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully initialized firmware ctrl block
+ *	QLA_ERROR   - Failed to initialize firmware ctrl block
+ **************************************************************************/
+int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
+{
+	struct init_fw_ctrl_blk *init_fw_cb;
+	dma_addr_t init_fw_cb_dma;
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+	int status = QLA_ERROR;
+
+	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
+					sizeof(struct init_fw_ctrl_blk),
+					&init_fw_cb_dma, GFP_KERNEL);
+	if (init_fw_cb == NULL) {
+		DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
+			      ha->host_no, __func__));
+		return 10;
+	}
+	memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
+
+	/* Get Initialize Firmware Control Block. */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
+	mbox_cmd[2] = LSDW(init_fw_cb_dma);
+	mbox_cmd[3] = MSDW(init_fw_cb_dma);
+	if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		dma_free_coherent(&ha->pdev->dev,
+				  sizeof(struct init_fw_ctrl_blk),
+				  init_fw_cb, init_fw_cb_dma);
+		return status;
+	}
+
+	/* Initialize request and response queues. */
+	qla4xxx_init_rings(ha);
+
+	/* Fill in the request and response queue information. */
+	init_fw_cb->ReqQConsumerIndex = cpu_to_le16(ha->request_out);
+	init_fw_cb->ComplQProducerIndex = cpu_to_le16(ha->response_in);
+	init_fw_cb->ReqQLen = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
+	init_fw_cb->ComplQLen = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
+	init_fw_cb->ReqQAddrLo = cpu_to_le32(LSDW(ha->request_dma));
+	init_fw_cb->ReqQAddrHi = cpu_to_le32(MSDW(ha->request_dma));
+	init_fw_cb->ComplQAddrLo = cpu_to_le32(LSDW(ha->response_dma));
+	init_fw_cb->ComplQAddrHi = cpu_to_le32(MSDW(ha->response_dma));
+	init_fw_cb->ShadowRegBufAddrLo =
+		cpu_to_le32(LSDW(ha->shadow_regs_dma));
+	init_fw_cb->ShadowRegBufAddrHi =
+		cpu_to_le32(MSDW(ha->shadow_regs_dma));
+
+	/* Set up required options. */
+	init_fw_cb->FwOptions |=
+		__constant_cpu_to_le16(FWOPT_SESSION_MODE |
+				       FWOPT_INITIATOR_MODE);
+	init_fw_cb->FwOptions &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
+
+	/* Save some info in adapter structure. */
+	ha->firmware_options = le16_to_cpu(init_fw_cb->FwOptions);
+	ha->tcp_options = le16_to_cpu(init_fw_cb->TCPOptions);
+	ha->heartbeat_interval = init_fw_cb->HeartbeatInterval;
+	ha->isns_server_port_number =
+		le16_to_cpu(init_fw_cb->iSNSServerPortNumber);
+	memcpy(ha->ip_address, init_fw_cb->IPAddr,
+	       min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
+	memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
+	       min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
+	memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
+	       min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
+	memcpy(ha->isns_ip_address, init_fw_cb->iSNSIPAddr,
+	       min(sizeof(ha->isns_ip_address),
+		   sizeof(init_fw_cb->iSNSIPAddr)));
+	memcpy(ha->name_string, init_fw_cb->iSCSINameString,
+	       min(sizeof(ha->name_string),
+		   sizeof(init_fw_cb->iSCSINameString)));
+	memcpy(ha->alias, init_fw_cb->Alias,
+	       min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));
+
+	/* Save Command Line Paramater info */
+	ha->port_down_retry_count = le16_to_cpu(init_fw_cb->KeepAliveTimeout);
+	ha->discovery_wait = ql4xdiscoverywait;
+
+	/* Send Initialize Firmware Control Block. */
+	mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
+	mbox_cmd[1] = 0;
+	mbox_cmd[2] = LSDW(init_fw_cb_dma);
+	mbox_cmd[3] = MSDW(init_fw_cb_dma);
+	if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) ==
+	    QLA_SUCCESS)
+		status = QLA_SUCCESS;
+	 else {
+		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_INITIALIZE_FIRMWARE "
+			      "failed w/ status %04X\n", ha->host_no, __func__,
+			      mbox_sts[0]));
+	}
+	dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
+			  init_fw_cb, init_fw_cb_dma);
+
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_get_dhcp_ip_address
+ *	This routine retrieves the IP Address obtained via DHCP for the
+ *	specified adapter.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully obtained DHCP IP Address
+ *	QLA_ERROR   - Failed to obtained
+ **************************************************************************/
+int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
+{
+	struct init_fw_ctrl_blk *init_fw_cb;
+	dma_addr_t init_fw_cb_dma;
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
+					sizeof(struct init_fw_ctrl_blk),
+					&init_fw_cb_dma, GFP_KERNEL);
+	if (init_fw_cb == NULL) {
+		printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
+		       __func__);
+		return 10;
+	}
+
+	/* Get Initialize Firmware Control Block. */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
+	mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
+	mbox_cmd[2] = LSDW(init_fw_cb_dma);
+	mbox_cmd[3] = MSDW(init_fw_cb_dma);
+
+	if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
+			      ha->host_no, __func__));
+		dma_free_coherent(&ha->pdev->dev,
+				  sizeof(struct init_fw_ctrl_blk),
+				  init_fw_cb, init_fw_cb_dma);
+		return QLA_ERROR;
+	}
+
+	/* Save IP Address. */
+	memcpy(ha->ip_address, init_fw_cb->IPAddr,
+	       min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
+	memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
+	       min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
+	memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
+	       min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
+
+	dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
+			  init_fw_cb, init_fw_cb_dma);
+
+	return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_get_firmware_state
+ *	This routine retrieves the firmware state for the specified adapter.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully retrieved firmware state
+ *	QLA_ERROR   - Failed to retrieve firmware state
+ **************************************************************************/
+int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	/* Get firmware version */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
+	if (qla4xxx_mailbox_command(ha, 1, 4, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
+			      "status %04X\n", ha->host_no, __func__,
+			      mbox_sts[0]));
+		return QLA_ERROR;
+	}
+	ha->firmware_state = mbox_sts[1];
+	ha->board_id = mbox_sts[2];
+	ha->addl_fw_state = mbox_sts[3];
+	DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
+		      ha->host_no, __func__, ha->firmware_state);)
+
+		return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_get_firmware_status
+ *	This routine retrieves the firmware status for the specified adapter.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully retrieved firmware status
+ *	QLA_ERROR   - Failed to retrieve firmware status
+ **************************************************************************/
+int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	/* Get firmware version */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
+	if (qla4xxx_mailbox_command(ha, 1, 3, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
+			      "status %04X\n", ha->host_no, __func__,
+			      mbox_sts[0]));
+		return QLA_ERROR;
+	}
+
+	/* High-water mark of IOCBs */
+	ha->iocb_hiwat = mbox_sts[2];
+	if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION)
+		ha->iocb_hiwat -= IOCB_HIWAT_CUSHION;
+	else
+		ql4_printk(KERN_INFO, ha, "WARNING!!!  You have less than %d "
+			   "firmare IOCBs available (%d).\n",
+			   IOCB_HIWAT_CUSHION, ha->iocb_hiwat);
+
+	return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_get_fwddb_entry
+ *	This routine retrieves the firmware's device database entry.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *	fw_ddb_index - Firmware's device database index
+ *	fw_ddb_entry - Pointer to firmware's device database entry structure
+ *	num_valid_ddb_entries - Pointer to number of valid ddb entries
+ *	next_ddb_index - Pointer to next valid device database index
+ *	fw_ddb_device_state - Pointer to device state
+ *
+ * Output:
+ *	fw_ddb_entry - Fills in structure if pointer is supplied
+ *	num_valid_ddb_entries - Fills in if pointer is supplied
+ *	next_ddb_index - Fills in if pointer is supplied
+ *	fw_ddb_device_state - Fills in if pointer is supplied
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully retrieved ddb info from firmware
+ *	QLA_ERROR   - Failed to retrieve ddb info from firmware
+ **************************************************************************/
+int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
+			    uint16_t fw_ddb_index,
+			    struct dev_db_entry *fw_ddb_entry,
+			    dma_addr_t fw_ddb_entry_dma,
+			    uint32_t *num_valid_ddb_entries,
+			    uint32_t *next_ddb_index,
+			    uint32_t *fw_ddb_device_state,
+			    uint32_t *conn_err_detail,
+			    uint16_t *tcp_source_port_num,
+			    uint16_t *connection_id)
+{
+	int status = QLA_ERROR;
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	/* Make sure the device index is valid */
+	if (fw_ddb_index >= MAX_DDB_ENTRIES) {
+		DEBUG2(printk("scsi%ld: %s: index [%d] out of range.\n",
+			      ha->host_no, __func__, fw_ddb_index));
+		goto exit_get_fwddb;
+	}
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
+	mbox_cmd[1] = (uint32_t) fw_ddb_index;
+	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
+	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
+	if (qla4xxx_mailbox_command(ha, 4, 7, &mbox_cmd[0], &mbox_sts[0]) ==
+	    QLA_ERROR) {
+		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
+			      " with status 0x%04X\n", ha->host_no, __func__,
+			      mbox_sts[0]));
+		goto exit_get_fwddb;
+	}
+	if (fw_ddb_index != mbox_sts[1]) {
+		DEBUG2(printk("scsi%ld: %s: index mismatch [%d] != [%d].\n",
+			      ha->host_no, __func__, fw_ddb_index,
+			      mbox_sts[1]));
+		goto exit_get_fwddb;
+	}
+	if (fw_ddb_entry) {
+		ql4_printk(KERN_INFO, ha, "DDB[%d] MB0 %04x Tot %d Next %d "
+			   "State %04x ConnErr %08x %d.%d.%d.%d:%04d \"%s\"\n",
+			   fw_ddb_index, mbox_sts[0], mbox_sts[2], mbox_sts[3],
+			   mbox_sts[4], mbox_sts[5], fw_ddb_entry->ipAddr[0],
+			   fw_ddb_entry->ipAddr[1], fw_ddb_entry->ipAddr[2],
+			   fw_ddb_entry->ipAddr[3],
+			   le16_to_cpu(fw_ddb_entry->portNumber),
+			   fw_ddb_entry->iscsiName);
+	}
+	if (num_valid_ddb_entries)
+		*num_valid_ddb_entries = mbox_sts[2];
+	if (next_ddb_index)
+		*next_ddb_index = mbox_sts[3];
+	if (fw_ddb_device_state)
+		*fw_ddb_device_state = mbox_sts[4];
+
+	/*
+	 * RA: This mailbox has been changed to pass connection error and
+	 * details.  Its true for ISP4010 as per Version E - Not sure when it
+	 * was changed.	 Get the time2wait from the fw_dd_entry field :
+	 * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
+	 * struct.
+	 */
+	if (conn_err_detail)
+		*conn_err_detail = mbox_sts[5];
+	if (tcp_source_port_num)
+		*tcp_source_port_num = (uint16_t) mbox_sts[6] >> 16;
+	if (connection_id)
+		*connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
+	status = QLA_SUCCESS;
+
+exit_get_fwddb:
+	return status;
+}
+
+/**************************************************************************
+ * qla4xxx_set_fwddb_entry
+ *	This routine initializes or updates the adapter's device database
+ *	entry for the specified device.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *	fw_ddb_index - Firmware's device database index
+ *	fw_ddb_entry - Pointer to firmware's device database entry
+ *		       structure, or NULL.
+ *
+ * Output:
+ *	None
+ *
+ * Remarks:
+ *	This routine also triggers a login for the specified device.
+ *	Therefore, it may also be used as a secondary login routine when
+ *	a NULL pointer is specified for the fw_ddb_entry.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully set ddb_entry in firmware
+ *	QLA_ERROR   - Failed to set ddb_entry in firmware
+ **************************************************************************/
+int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
+			  dma_addr_t fw_ddb_entry_dma)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	/* Do not wait for completion. The firmware will send us an
+	 * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
+	 */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+	mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
+	mbox_cmd[1] = (uint32_t) fw_ddb_index;
+	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
+	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
+	return qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
+}
+
+int qla4xxx_conn_open_session_login(struct scsi_qla_host * ha,
+				    uint16_t fw_ddb_index)
+{
+	int status = QLA_ERROR;
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	/* Do not wait for completion. The firmware will send us an
+	 * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
+	 */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_CONN_OPEN_SESS_LOGIN;
+	mbox_cmd[1] = (uint32_t) fw_ddb_index;
+	mbox_cmd[2] = 0;
+	mbox_cmd[3] = 0;
+	mbox_cmd[4] = 0;
+	status = qla4xxx_mailbox_command(ha, 4, 0, &mbox_cmd[0], &mbox_sts[0]);
+	DEBUG2(printk("%s fw_ddb_index=%d status=%d mbx0_1=0x%x :0x%x\n",
+		      __func__, fw_ddb_index, status, mbox_sts[0],
+		      mbox_sts[1]);)
+
+		return status;
+}
+
+/**************************************************************************
+ * qla4xxx_get_crash_record
+ *	This routine retrieves a crash record from the QLA4010 after an
+ *	8002h aen.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	None
+ **************************************************************************/
+void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+	struct crash_record *crash_record = NULL;
+	dma_addr_t crash_record_dma = 0;
+	uint32_t crash_record_size = 0;
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_cmd));
+
+	/* Get size of crash record. */
+	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
+	if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
+			      ha->host_no, __func__));
+		goto exit_get_crash_record;
+	}
+	crash_record_size = mbox_sts[4];
+	if (crash_record_size == 0) {
+		DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
+			      ha->host_no, __func__));
+		goto exit_get_crash_record;
+	}
+
+	/* Alloc Memory for Crash Record. */
+	crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
+					  &crash_record_dma, GFP_KERNEL);
+	if (crash_record == NULL)
+		goto exit_get_crash_record;
+
+	/* Get Crash Record. */
+	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
+	mbox_cmd[2] = LSDW(crash_record_dma);
+	mbox_cmd[3] = MSDW(crash_record_dma);
+	mbox_cmd[4] = crash_record_size;
+	if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS)
+		goto exit_get_crash_record;
+
+	/* Dump Crash Record. */
+
+exit_get_crash_record:
+	if (crash_record)
+		dma_free_coherent(&ha->pdev->dev, crash_record_size,
+				  crash_record, crash_record_dma);
+}
+
+/**************************************************************************
+ * qla4xxx_get_conn_event_log
+ *	This routine retrieves the connection event log
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *
+ * Returns:
+ *	None
+ **************************************************************************/
+void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+	struct conn_event_log_entry *event_log = NULL;
+	dma_addr_t event_log_dma = 0;
+	uint32_t event_log_size = 0;
+	uint32_t num_valid_entries;
+	uint32_t      oldest_entry = 0;
+	uint32_t	max_event_log_entries;
+	uint8_t		i;
+
+
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_cmd));
+
+	/* Get size of crash record. */
+	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
+	if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS)
+		goto exit_get_event_log;
+
+	event_log_size = mbox_sts[4];
+	if (event_log_size == 0)
+		goto exit_get_event_log;
+
+	/* Alloc Memory for Crash Record. */
+	event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
+				       &event_log_dma, GFP_KERNEL);
+	if (event_log == NULL)
+		goto exit_get_event_log;
+
+	/* Get Crash Record. */
+	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
+	mbox_cmd[2] = LSDW(event_log_dma);
+	mbox_cmd[3] = MSDW(event_log_dma);
+	if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
+			      "log!\n", ha->host_no, __func__));
+		goto exit_get_event_log;
+	}
+
+	/* Dump Event Log. */
+	num_valid_entries = mbox_sts[1];
+
+	max_event_log_entries = event_log_size /
+		sizeof(struct conn_event_log_entry);
+
+	if (num_valid_entries > max_event_log_entries)
+		oldest_entry = num_valid_entries % max_event_log_entries;
+
+	DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
+		      ha->host_no, num_valid_entries));
+
+	if (extended_error_logging == 3) {
+		if (oldest_entry == 0) {
+			/* Circular Buffer has not wrapped around */
+			for (i=0; i < num_valid_entries; i++) {
+				qla4xxx_dump_buffer((uint8_t *)event_log+
+						    (i*sizeof(*event_log)),
+						    sizeof(*event_log));
+			}
+		}
+		else {
+			/* Circular Buffer has wrapped around -
+			 * display accordingly*/
+			for (i=oldest_entry; i < max_event_log_entries; i++) {
+				qla4xxx_dump_buffer((uint8_t *)event_log+
+						    (i*sizeof(*event_log)),
+						    sizeof(*event_log));
+			}
+			for (i=0; i < oldest_entry; i++) {
+				qla4xxx_dump_buffer((uint8_t *)event_log+
+						    (i*sizeof(*event_log)),
+						    sizeof(*event_log));
+			}
+		}
+	}
+
+exit_get_event_log:
+	if (event_log)
+		dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
+				  event_log_dma);
+}
+
+/**************************************************************************
+ * qla4xxx_reset_lun
+ *	This routine performs a LUN RESET on the specified target/lun.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *	ddb_entry - Pointer to device database entry
+ *	lun_entry - Pointer to lun entry structure
+ *
+ * Remarks:
+ *	The caller must ensure that the ddb_entry and lun_entry pointers
+ *	are valid before calling this routine.
+ *
+ * Returns:
+ *	QLA_SUCCESS - lun reset completed successfully
+ *	QLA_ERROR   - lun reset failed
+ **************************************************************************/
+int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
+		      int lun)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+	int status = QLA_SUCCESS;
+
+	DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
+		      ddb_entry->os_target_id, lun));
+
+	/*
+	 * Send lun reset command to ISP, so that the ISP will return all
+	 * outstanding requests with RESET status
+	 */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_LUN_RESET;
+	mbox_cmd[1] = ddb_entry->fw_ddb_index;
+	mbox_cmd[2] = lun << 8;
+	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
+	qla4xxx_mailbox_command(ha, 6, 1, &mbox_cmd[0], &mbox_sts[0]);
+	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
+	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
+		status = QLA_ERROR;
+
+	return status;
+}
+
+
+int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
+		      uint32_t offset, uint32_t len)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_READ_FLASH;
+	mbox_cmd[1] = LSDW(dma_addr);
+	mbox_cmd[2] = MSDW(dma_addr);
+	mbox_cmd[3] = offset;
+	mbox_cmd[4] = len;
+	if (qla4xxx_mailbox_command(ha, 5, 2, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
+		    "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
+		    __func__, mbox_sts[0], mbox_sts[1], offset, len));
+		return QLA_ERROR;
+	}
+	return QLA_SUCCESS;
+}
+
+/**************************************************************************
+ * qla4xxx_get_fw_version
+ *	This routine retrieves the firmware version for the specified adapter.
+ *
+ * Input:
+ *	ha - Pointer to host adapter structure.
+ *
+ * Output:
+ *	None
+ *
+ * Remarks:
+ *	In QLA4010, mailboxes 2 & 3 may hold an address for data.  Make sure
+ *	that we write 0 to those mailboxes, if unused.
+ *
+ * Returns:
+ *	QLA_SUCCESS - Successfully retrieved firmware version
+ *	QLA_ERROR   - Failed to retrieve firmware version
+ **************************************************************************/
+int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	/* Get firmware version. */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+	mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
+	if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
+		    "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
+		return QLA_ERROR;
+	}
+
+	/* Save firmware version information. */
+	ha->firmware_version[0] = mbox_sts[1];
+	ha->firmware_version[1] = mbox_sts[2];
+	ha->patch_number = mbox_sts[3];
+	ha->build_number = mbox_sts[4];
+
+	return QLA_SUCCESS;
+}
+
+int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, dma_addr_t dma_addr)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
+	mbox_cmd[2] = LSDW(dma_addr);
+	mbox_cmd[3] = MSDW(dma_addr);
+
+	if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
+		     ha->host_no, __func__, mbox_sts[0]));
+		return QLA_ERROR;
+	}
+	return QLA_SUCCESS;
+}
+
+int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+	mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
+	mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
+
+	if (qla4xxx_mailbox_command(ha, 2, 3, &mbox_cmd[0], &mbox_sts[0]) !=
+	    QLA_SUCCESS) {
+		if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
+			*ddb_index = mbox_sts[2];
+		} else {
+			DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
+			     ha->host_no, __func__, mbox_sts[0]));
+			return QLA_ERROR;
+		}
+	} else {
+		*ddb_index = MAX_PRST_DEV_DB_ENTRIES;
+	}
+
+	return QLA_SUCCESS;
+}
+
+int qla4xxx_isns(struct scsi_qla_host *ha, uint32_t enable,
+		 char *ip, uint16_t port, struct qla_isns_rsp *isns_rsp)
+{
+	uint32_t mbox_cmd[MBOX_REG_COUNT];
+	uint32_t mbox_sts[MBOX_REG_COUNT];
+
+	while (test_and_set_bit(AF_ISNS_CMD_IN_PROCESS, &ha->flags) &
+	       AF_ISNS_CMD_IN_PROCESS) {
+		msleep(10);
+	}
+	/* Get firmware version. */
+	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+	memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+	mbox_cmd[0] = MBOX_CMD_SET_ISNS_SERVICE;
+	if (enable) {
+		mbox_cmd[1] = ISNS_ENABLE;
+	} else {
+		mbox_cmd[1] = ISNS_DISABLE;
+	}
+	mbox_cmd[2] = *((uint32_t *)ip);
+	mbox_cmd[3] = port;
+
+	if (qla4xxx_mailbox_command(ha, 4, 6, &mbox_cmd[0], &mbox_sts[0])
+	    != QLA_SUCCESS) {
+		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_SET_ISNS_SERVICE failed "
+			      "w/ status %04X %04X\n",
+			      ha->host_no, __func__, mbox_sts[0],
+			      mbox_sts[1]));
+		clear_bit(AF_ISNS_CMD_IN_PROCESS, &ha->flags);
+		return QLA_ERROR;
+	}
+
+	if (enable) {
+		if (mbox_cmd[0] == MBOX_STS_INTERMEDIATE_COMPLETION) {
+			/* wait for the AEN to complete the call */
+			while (test_bit(AF_ISNS_CMD_DONE, &ha->flags)) {
+				msleep(10);
+			}
+			clear_bit(AF_ISNS_CMD_DONE, &ha->flags);
+
+			memcpy(isns_rsp, &ha->isns_rsp,
+			       sizeof (struct qla_isns_rsp));
+		} else {
+			isns_rsp->conn_id = (uint16_t)(mbox_sts[2] & 0xFFFF);
+			isns_rsp->scn_conn_id =
+				(uint16_t)(mbox_sts[3] & 0xFFFF);
+			isns_rsp->esi_conn_id =
+				(uint16_t)(mbox_sts[4] & 0xFFFF);
+
+			isns_rsp->conn_port = (uint16_t)(mbox_sts[2] >> 16);
+			isns_rsp->scn_port = (uint16_t)(mbox_sts[3] >> 16);
+			isns_rsp->esi_port = (uint16_t)(mbox_sts[4] >> 16);
+		}
+	}
+
+	clear_bit(AF_ISNS_CMD_IN_PROCESS, &ha->flags);
+
+	return QLA_SUCCESS;
+}
+
+int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
+{
+	struct dev_db_entry *fw_ddb_entry;
+	dma_addr_t fw_ddb_entry_dma;
+	uint32_t ddb_index;
+	int ret_val = QLA_SUCCESS;
+
+
+	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
+					  sizeof(*fw_ddb_entry),
+					  &fw_ddb_entry_dma, GFP_KERNEL);
+	if (!fw_ddb_entry) {
+		DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+			      ha->host_no, __func__));
+		ret_val = QLA_ERROR;
+		goto qla4xxx_send_tgts_exit;
+	}
+
+	ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
+	if (ret_val != QLA_SUCCESS)
+		goto qla4xxx_send_tgts_exit;
+
+	ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
+	if (ret_val != QLA_SUCCESS)
+		goto qla4xxx_send_tgts_exit;
+
+	memset((void *)fw_ddb_entry->iSCSIAlias, 0,
+	       sizeof(fw_ddb_entry->iSCSIAlias));
+
+	memset((void *)fw_ddb_entry->iscsiName, 0,
+	       sizeof(fw_ddb_entry->iscsiName));
+
+	memset((void *)fw_ddb_entry->ipAddr, 0, sizeof(fw_ddb_entry->ipAddr));
+	memset((void *)fw_ddb_entry->targetAddr, 0,
+	       sizeof(fw_ddb_entry->targetAddr));
+
+	fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
+	fw_ddb_entry->portNumber = cpu_to_le16(ntohs(port));
+
+	fw_ddb_entry->ipAddr[0] = *ip;
+	fw_ddb_entry->ipAddr[1] = *(ip + 1);
+	fw_ddb_entry->ipAddr[2] = *(ip + 2);
+	fw_ddb_entry->ipAddr[3] = *(ip + 3);
+
+	ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
+
+qla4xxx_send_tgts_exit:
+	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+			  fw_ddb_entry, fw_ddb_entry_dma);
+	return ret_val;
+}
+