ql4_init.c

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}

static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
{
	int status = QLA_ERROR;
	uint32_t max_wait_time;
	unsigned long flags;
	uint32_t mbox_status;

	dev_info(&ha->pdev->dev, "Starting firmware ...\n");

	/*
	 * Start firmware from flash ROM
	 *
	 * WORKAROUND: Stuff a non-constant value that the firmware can
	 * use as a seed for a random number generator in MB7 prior to
	 * setting BOOT_ENABLE.	 Fixes problem where the TCP
	 * connections use the same TCP ports after each reboot,
	 * causing some connections to not get re-established.
	 */
	DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
		     ha->host_no, __func__));

	spin_lock_irqsave(&ha->hardware_lock, flags);
	writel(jiffies, &ha->reg->mailbox[7]);
	if (is_qla4022(ha) | is_qla4032(ha))
		writel(set_rmask(NVR_WRITE_ENABLE),
		       &ha->reg->u1.isp4022.nvram);

        writel(2, &ha->reg->mailbox[6]);
        readl(&ha->reg->mailbox[6]);

	writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
	readl(&ha->reg->ctrl_status);
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	/* Wait for firmware to come UP. */
	max_wait_time = FIRMWARE_UP_TOV * 4;
	do {
		uint32_t ctrl_status;

		spin_lock_irqsave(&ha->hardware_lock, flags);
		ctrl_status = readw(&ha->reg->ctrl_status);
		mbox_status = readw(&ha->reg->mailbox[0]);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);

		if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
			break;
		if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
			break;

		DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
			      "complete... ctrl_sts=0x%x, remaining=%d\n",
			      ha->host_no, __func__, ctrl_status,
			      max_wait_time));

		msleep(250);
	} while ((max_wait_time--));

	if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
		DEBUG(printk("scsi%ld: %s: Firmware has started\n",
			     ha->host_no, __func__));

		spin_lock_irqsave(&ha->hardware_lock, flags);
		writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
		       &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);

		status = QLA_SUCCESS;
	} else {
		printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
		       "-  mbox status 0x%x\n", ha->host_no, __func__,
		       mbox_status);
		status = QLA_ERROR;
	}
	return status;
}

int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
{
#define QL4_LOCK_DRVR_WAIT	60
#define QL4_LOCK_DRVR_SLEEP	1

	int drvr_wait = QL4_LOCK_DRVR_WAIT;
	while (drvr_wait) {
		if (ql4xxx_lock_drvr(a) == 0) {
			ssleep(QL4_LOCK_DRVR_SLEEP);
			if (drvr_wait) {
				DEBUG2(printk("scsi%ld: %s: Waiting for "
					      "Global Init Semaphore(%d)...\n",
					      a->host_no,
					      __func__, drvr_wait));
			}
			drvr_wait -= QL4_LOCK_DRVR_SLEEP;
		} else {
			DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
				      "acquired\n", a->host_no, __func__));
			return QLA_SUCCESS;
		}
	}
	return QLA_ERROR;
}

/**
 * qla4xxx_start_firmware - starts qla4xxx firmware
 * @ha: Pointer to host adapter structure.
 *
 * This routine performs the necessary steps to start the firmware for
 * the QLA4010 adapter.
 **/
static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
{
	unsigned long flags = 0;
	uint32_t mbox_status;
	int status = QLA_ERROR;
	int soft_reset = 1;
	int config_chip = 0;

	if (is_qla4022(ha) | is_qla4032(ha))
		ql4xxx_set_mac_number(ha);

	if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
		return QLA_ERROR;

	spin_lock_irqsave(&ha->hardware_lock, flags);

	DEBUG2(printk("scsi%ld: %s: port_ctrl	= 0x%08X\n", ha->host_no,
		      __func__, readw(isp_port_ctrl(ha))));
	DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
		     __func__, readw(isp_port_status(ha))));

	/* Is Hardware already initialized? */
	if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
		DEBUG(printk("scsi%ld: %s: Hardware has already been "
			     "initialized\n", ha->host_no, __func__));

		/* Receive firmware boot acknowledgement */
		mbox_status = readw(&ha->reg->mailbox[0]);

		DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
			      "0x%x\n", ha->host_no, __func__, mbox_status));

		/* Is firmware already booted? */
		if (mbox_status == 0) {
			/* F/W not running, must be config by net driver */
			config_chip = 1;
			soft_reset = 0;
		} else {
			writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
			       &ha->reg->ctrl_status);
			readl(&ha->reg->ctrl_status);
			spin_unlock_irqrestore(&ha->hardware_lock, flags);
			if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
				DEBUG2(printk("scsi%ld: %s: Get firmware "
					      "state -- state = 0x%x\n",
					      ha->host_no,
					      __func__, ha->firmware_state));
				/* F/W is running */
				if (ha->firmware_state &
				    FW_STATE_CONFIG_WAIT) {
					DEBUG2(printk("scsi%ld: %s: Firmware "
						      "in known state -- "
						      "config and "
						      "boot, state = 0x%x\n",
						      ha->host_no, __func__,
						      ha->firmware_state));
					config_chip = 1;
					soft_reset = 0;
				}
			} else {
				DEBUG2(printk("scsi%ld: %s: Firmware in "
					      "unknown state -- resetting,"
					      " state = "
					      "0x%x\n", ha->host_no, __func__,
					      ha->firmware_state));
			}
			spin_lock_irqsave(&ha->hardware_lock, flags);
		}
	} else {
		DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
			     "started - resetting\n", ha->host_no, __func__));
	}
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
		     ha->host_no, __func__, soft_reset, config_chip));
	if (soft_reset) {
		DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
			     __func__));
		status = qla4xxx_soft_reset(ha);
		if (status == QLA_ERROR) {
			DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
				     ha->host_no, __func__));
			ql4xxx_unlock_drvr(ha);
			return QLA_ERROR;
		}
		config_chip = 1;

		/* Reset clears the semaphore, so aquire again */
		if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
			return QLA_ERROR;
	}

	if (config_chip) {
		if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
			status = qla4xxx_start_firmware_from_flash(ha);
	}

	ql4xxx_unlock_drvr(ha);
	if (status == QLA_SUCCESS) {
		qla4xxx_get_fw_version(ha);
		if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
			qla4xxx_get_crash_record(ha);
	} else {
		DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
			     ha->host_no, __func__));
	}
	return status;
}


/**
 * qla4xxx_initialize_adapter - initiailizes hba
 * @ha: Pointer to host adapter structure.
 * @renew_ddb_list: Indicates what to do with the adapter's ddb list
 *	after adapter recovery has completed.
 *	0=preserve ddb list, 1=destroy and rebuild ddb list
 *
 * This routine parforms all of the steps necessary to initialize the adapter.
 *
 **/
int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
			       uint8_t renew_ddb_list)
{
	int status = QLA_ERROR;
	int8_t ip_address[IP_ADDR_LEN] = {0} ;

	ha->eeprom_cmd_data = 0;

	qla4x00_pci_config(ha);

	qla4xxx_disable_intrs(ha);

	/* Initialize the Host adapter request/response queues and firmware */
	if (qla4xxx_start_firmware(ha) == QLA_ERROR)
		goto exit_init_hba;

	if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
		goto exit_init_hba;

	if (qla4xxx_init_local_data(ha) == QLA_ERROR)
		goto exit_init_hba;

	status = qla4xxx_init_firmware(ha);
	if (status == QLA_ERROR)
		goto exit_init_hba;

	/*
	 * FW is waiting to get an IP address from DHCP server: Skip building
	 * the ddb_list and wait for DHCP lease acquired aen to come in
	 * followed by 0x8014 aen" to trigger the tgt discovery process.
	 */
	if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
		goto exit_init_online;

	/* Skip device discovery if ip and subnet is zero */
	if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
	    memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
		goto exit_init_online;

	if (renew_ddb_list == PRESERVE_DDB_LIST) {
		/*
		 * We want to preserve lun states (i.e. suspended, etc.)
		 * for recovery initiated by the driver.  So just update
		 * the device states for the existing ddb_list.
		 */
		qla4xxx_reinitialize_ddb_list(ha);
	} else if (renew_ddb_list == REBUILD_DDB_LIST) {
		/*
		 * We want to build the ddb_list from scratch during
		 * driver initialization and recovery initiated by the
		 * INT_HBA_RESET IOCTL.
		 */
		status = qla4xxx_initialize_ddb_list(ha);
		if (status == QLA_ERROR) {
			DEBUG2(printk("%s(%ld) Error occurred during build"
				      "ddb list\n", __func__, ha->host_no));
			goto exit_init_hba;
		}

	}
	if (!ha->tot_ddbs) {
		DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
			      "present in Firmware device database\n",
			      ha->host_no));
	}

exit_init_online:
	set_bit(AF_ONLINE, &ha->flags);
exit_init_hba:
	return status;
}

/**
 * qla4xxx_add_device_dynamically - ddb addition due to an AEN
 * @ha:  Pointer to host adapter structure.
 * @fw_ddb_index:  Firmware's device database index
 *
 * This routine processes adds a device as a result of an 8014h AEN.
 **/
static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
					   uint32_t fw_ddb_index)
{
	struct ddb_entry * ddb_entry;
	uint32_t new_tgt;

	/* First allocate a device structure */
	ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
	if (ddb_entry == NULL) {
		DEBUG2(printk(KERN_WARNING
			      "scsi%ld: Unable to allocate memory to add "
			      "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
		return;
	}

	if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
		/* Target has been bound to a new fw_ddb_index */
		qla4xxx_free_ddb(ha, ddb_entry);
		ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
		if (ddb_entry == NULL) {
			DEBUG2(printk(KERN_WARNING
				"scsi%ld: Unable to allocate memory"
				" to add fw_ddb_index %d\n",
				ha->host_no, fw_ddb_index));
			return;
		}
	}
	if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
				    QLA_ERROR) {
		ha->fw_ddb_index_map[fw_ddb_index] =
					(struct ddb_entry *)INVALID_ENTRY;
		DEBUG2(printk(KERN_WARNING
			      "scsi%ld: failed to add new device at index "
			      "[%d]\n Unable to retrieve fw ddb entry\n",
			      ha->host_no, fw_ddb_index));
		qla4xxx_free_ddb(ha, ddb_entry);
		return;
	}

	if (qla4xxx_add_sess(ddb_entry)) {
		DEBUG2(printk(KERN_WARNING
			      "scsi%ld: failed to add new device at index "
			      "[%d]\n Unable to add connection and session\n",
			      ha->host_no, fw_ddb_index));
		qla4xxx_free_ddb(ha, ddb_entry);
	}
}

/**
 * qla4xxx_process_ddb_changed - process ddb state change
 * @ha - Pointer to host adapter structure.
 * @fw_ddb_index - Firmware's device database index
 * @state - Device state
 *
 * This routine processes a Decive Database Changed AEN Event.
 **/
int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
				uint32_t fw_ddb_index, uint32_t state)
{
	struct ddb_entry * ddb_entry;
	uint32_t old_fw_ddb_device_state;

	/* check for out of range index */
	if (fw_ddb_index >= MAX_DDB_ENTRIES)
		return QLA_ERROR;

	/* Get the corresponging ddb entry */
	ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
	/* Device does not currently exist in our database. */
	if (ddb_entry == NULL) {
		if (state == DDB_DS_SESSION_ACTIVE)
			qla4xxx_add_device_dynamically(ha, fw_ddb_index);
		return QLA_SUCCESS;
	}

	/* Device already exists in our database. */
	old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
	DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
		      "index [%d]\n", ha->host_no, __func__,
		      ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
	if (old_fw_ddb_device_state == state &&
	    state == DDB_DS_SESSION_ACTIVE) {
		/* Do nothing, state not changed. */
		return QLA_SUCCESS;
	}

	ddb_entry->fw_ddb_device_state = state;
	/* Device is back online. */
	if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
		atomic_set(&ddb_entry->port_down_timer,
			   ha->port_down_retry_count);
		atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
		atomic_set(&ddb_entry->relogin_retry_count, 0);
		atomic_set(&ddb_entry->relogin_timer, 0);
		clear_bit(DF_RELOGIN, &ddb_entry->flags);
		clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
		iscsi_if_create_session_done(ddb_entry->conn);
		/*
		 * Change the lun state to READY in case the lun TIMEOUT before
		 * the device came back.
		 */
	} else {
		/* Device went away, try to relogin. */
		/* Mark device missing */
		if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
			qla4xxx_mark_device_missing(ha, ddb_entry);
		/*
		 * Relogin if device state changed to a not active state.
		 * However, do not relogin if this aen is a result of an IOCTL
		 * logout (DF_NO_RELOGIN) or if this is a discovered device.
		 */
		if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
		    !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
		    !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
		    !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
			/*
			 * This triggers a relogin.  After the relogin_timer
			 * expires, the relogin gets scheduled.	 We must wait a
			 * minimum amount of time since receiving an 0x8014 AEN
			 * with failed device_state or a logout response before
			 * we can issue another relogin.
			 */
			/* Firmware padds this timeout: (time2wait +1).
			 * Driver retry to login should be longer than F/W.
			 * Otherwise F/W will fail
			 * set_ddb() mbx cmd with 0x4005 since it still
			 * counting down its time2wait.
			 */
			atomic_set(&ddb_entry->relogin_timer, 0);
			atomic_set(&ddb_entry->retry_relogin_timer,
				   ddb_entry->default_time2wait + 4);
		}
	}

	return QLA_SUCCESS;
}