drivers/scsi/qla2xxx/qla_mid.c - linux/kernel/git/davem/net - Git at Google

 /*
  * QLogic Fibre Channel HBA Driver
  * Copyright (c)  2003-2008 QLogic Corporation
  *
  * See LICENSE.qla2xxx for copyright and licensing details.
  */
 #include "qla_def.h"

 #include <linux/version.h>
 #include <linux/moduleparam.h>
 #include <linux/vmalloc.h>
 #include <linux/smp_lock.h>
 #include <linux/list.h>

 #include <scsi/scsi_tcq.h>
 #include <scsi/scsicam.h>
 #include <linux/delay.h>

 void
 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
 {
 	if (vha->parent && vha->timer_active) {
 		del_timer_sync(&vha->timer);
 		vha->timer_active = 0;
 	}
 }

 static uint32_t
 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
 {
 	uint32_t vp_id;
 	scsi_qla_host_t *ha = vha->parent;

 	/* Find an empty slot and assign an vp_id */
 	down(&ha->vport_sem);
 	vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
 	if (vp_id > ha->max_npiv_vports) {
 		DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
 		    vp_id, ha->max_npiv_vports));
 		up(&ha->vport_sem);
 		return vp_id;
 	}

 	set_bit(vp_id, ha->vp_idx_map);
 	ha->num_vhosts++;
 	vha->vp_idx = vp_id;
 	list_add_tail(&vha->vp_list, &ha->vp_list);
 	up(&ha->vport_sem);
 	return vp_id;
 }

 void
 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
 {
 	uint16_t vp_id;
 	scsi_qla_host_t *ha = vha->parent;

 	down(&ha->vport_sem);
 	vp_id = vha->vp_idx;
 	ha->num_vhosts--;
 	clear_bit(vp_id, ha->vp_idx_map);
 	list_del(&vha->vp_list);
 	up(&ha->vport_sem);
 }

 static scsi_qla_host_t *
 qla24xx_find_vhost_by_name(scsi_qla_host_t *ha, uint8_t *port_name)
 {
 	scsi_qla_host_t *vha;

 	/* Locate matching device in database. */
 	list_for_each_entry(vha, &ha->vp_list, vp_list) {
 		if (!memcmp(port_name, vha->port_name, WWN_SIZE))
 			return vha;
 	}
 	return NULL;
 }

 /*
  * qla2x00_mark_vp_devices_dead
  *	Updates fcport state when device goes offline.
  *
  * Input:
  *	ha = adapter block pointer.
  *	fcport = port structure pointer.
  *
  * Return:
  *	None.
  *
  * Context:
  */
 static void
 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 {
 	fc_port_t *fcport;
 	scsi_qla_host_t *pha = to_qla_parent(vha);

 	list_for_each_entry(fcport, &pha->fcports, list) {
 		if (fcport->vp_idx != vha->vp_idx)
 			continue;

 		DEBUG15(printk("scsi(%ld): Marking port dead, "
 		    "loop_id=0x%04x :%x\n",
 		    vha->host_no, fcport->loop_id, fcport->vp_idx));

 		atomic_set(&fcport->state, FCS_DEVICE_DEAD);
 		qla2x00_mark_device_lost(vha, fcport, 0, 0);
 	}
 }

 int
 qla24xx_disable_vp(scsi_qla_host_t *vha)
 {
 	int ret;

 	ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 	atomic_set(&vha->loop_state, LOOP_DOWN);
 	atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);

 	/* Delete all vp's fcports from parent's list */
 	qla2x00_mark_vp_devices_dead(vha);
 	atomic_set(&vha->vp_state, VP_FAILED);
 	vha->flags.management_server_logged_in = 0;
 	if (ret == QLA_SUCCESS) {
 		fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 	} else {
 		fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 		return -1;
 	}
 	return 0;
 }

 int
 qla24xx_enable_vp(scsi_qla_host_t *vha)
 {
 	int ret;
 	scsi_qla_host_t *ha = vha->parent;

 	/* Check if physical ha port is Up */
 	if (atomic_read(&ha->loop_state) == LOOP_DOWN  ||
 		atomic_read(&ha->loop_state) == LOOP_DEAD ) {
 		vha->vp_err_state =  VP_ERR_PORTDWN;
 		fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 		goto enable_failed;
 	}

 	/* Initialize the new vport unless it is a persistent port */
 	down(&ha->vport_sem);
 	ret = qla24xx_modify_vp_config(vha);
 	up(&ha->vport_sem);

 	if (ret != QLA_SUCCESS) {
 		fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 		goto enable_failed;
 	}

 	DEBUG15(qla_printk(KERN_INFO, ha,
 	    "Virtual port with id: %d - Enabled\n", vha->vp_idx));
 	return 0;

 enable_failed:
 	DEBUG15(qla_printk(KERN_INFO, ha,
 	    "Virtual port with id: %d - Disabled\n", vha->vp_idx));
 	return 1;
 }

 static void
 qla24xx_configure_vp(scsi_qla_host_t *vha)
 {
 	struct fc_vport *fc_vport;
 	int ret;

 	fc_vport = vha->fc_vport;

 	DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
 	    vha->host_no, __func__));
 	ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 	if (ret != QLA_SUCCESS) {
 		DEBUG15(qla_printk(KERN_ERR, vha, "Failed to enable receiving"
 		    " of RSCN requests: 0x%x\n", ret));
 		return;
 	} else {
 		/* Corresponds to SCR enabled */
 		clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 	}

 	vha->flags.online = 1;
 	if (qla24xx_configure_vhba(vha))
 		return;

 	atomic_set(&vha->vp_state, VP_ACTIVE);
 	fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 }

 void
 qla2x00_alert_all_vps(scsi_qla_host_t *ha, uint16_t *mb)
 {
 	int i, vp_idx_matched;
 	scsi_qla_host_t *vha;

 	if (ha->parent)
 		return;

 	for_each_mapped_vp_idx(ha, i) {
 		vp_idx_matched = 0;

 		list_for_each_entry(vha, &ha->vp_list, vp_list) {
 			if (i == vha->vp_idx) {
 				vp_idx_matched = 1;
 				break;
 			}
 		}

 		if (vp_idx_matched) {
 			switch (mb[0]) {
 			case MBA_LIP_OCCURRED:
 			case MBA_LOOP_UP:
 			case MBA_LOOP_DOWN:
 			case MBA_LIP_RESET:
 			case MBA_POINT_TO_POINT:
 			case MBA_CHG_IN_CONNECTION:
 			case MBA_PORT_UPDATE:
 			case MBA_RSCN_UPDATE:
 				DEBUG15(printk("scsi(%ld)%s: Async_event for"
 				    " VP[%d], mb = 0x%x, vha=%p\n",
 				    vha->host_no, __func__,i, *mb, vha));
 				qla2x00_async_event(vha, mb);
 				break;
 			}
 		}
 	}
 }

 void
 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 {
 	/*
 	 * Physical port will do most of the abort and recovery work. We can
 	 * just treat it as a loop down
 	 */
 	if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 		atomic_set(&vha->loop_state, LOOP_DOWN);
 		qla2x00_mark_all_devices_lost(vha, 0);
 	} else {
 		if (!atomic_read(&vha->loop_down_timer))
 			atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 	}

 	DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
 	    vha->host_no, vha->vp_idx));
 	qla24xx_enable_vp(vha);
 }

 static int
 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 {
 	scsi_qla_host_t *ha = vha->parent;

 	if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 		/* VP acquired. complete port configuration */
 		if (atomic_read(&ha->loop_state) == LOOP_READY) {
 			qla24xx_configure_vp(vha);
 		} else {
 			set_bit(VP_IDX_ACQUIRED, &vha->vp_flags);
 			set_bit(VP_DPC_NEEDED, &ha->dpc_flags);
 		}

 		return 0;
 	}

 	if (test_and_clear_bit(ISP_ABORT_NEEDED, &vha->dpc_flags))
 		qla2x00_vp_abort_isp(vha);

 	if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 	    (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 		clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 	}

 	if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 		if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 			qla2x00_loop_resync(vha);
 			clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 		}
 	}

 	return 0;
 }

 void
 qla2x00_do_dpc_all_vps(scsi_qla_host_t *ha)
 {
 	int ret;
 	int i, vp_idx_matched;
 	scsi_qla_host_t *vha;

 	if (ha->parent)
 		return;
 	if (list_empty(&ha->vp_list))
 		return;

 	clear_bit(VP_DPC_NEEDED, &ha->dpc_flags);

 	for_each_mapped_vp_idx(ha, i) {
 		vp_idx_matched = 0;

 		list_for_each_entry(vha, &ha->vp_list, vp_list) {
 			if (i == vha->vp_idx) {
 				vp_idx_matched = 1;
 				break;
 			}
 		}

 		if (vp_idx_matched)
 			ret = qla2x00_do_dpc_vp(vha);
 	}
 }

 int
 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 {
 	scsi_qla_host_t *ha = shost_priv(fc_vport->shost);
 	scsi_qla_host_t *vha;
 	uint8_t port_name[WWN_SIZE];

 	if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 		return VPCERR_UNSUPPORTED;

 	/* Check up the F/W and H/W support NPIV */
 	if (!ha->flags.npiv_supported)
 		return VPCERR_UNSUPPORTED;

 	/* Check up whether npiv supported switch presented */
 	if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 		return VPCERR_NO_FABRIC_SUPP;

 	/* Check up unique WWPN */
 	u64_to_wwn(fc_vport->port_name, port_name);
 	if (!memcmp(port_name, ha->port_name, WWN_SIZE))
 		return VPCERR_BAD_WWN;
 	vha = qla24xx_find_vhost_by_name(ha, port_name);
 	if (vha)
 		return VPCERR_BAD_WWN;

 	/* Check up max-npiv-supports */
 	if (ha->num_vhosts > ha->max_npiv_vports) {
 		DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
 		    "max_npv_vports %ud.\n", ha->host_no,
 		    ha->num_vhosts, ha->max_npiv_vports));
 		return VPCERR_UNSUPPORTED;
 	}
 	return 0;
 }

 scsi_qla_host_t *
 qla24xx_create_vhost(struct fc_vport *fc_vport)
 {
 	scsi_qla_host_t *ha = shost_priv(fc_vport->shost);
 	scsi_qla_host_t *vha;
 	struct Scsi_Host *host;

 	host = scsi_host_alloc(&qla24xx_driver_template,
 	    sizeof(scsi_qla_host_t));
 	if (!host) {
 		printk(KERN_WARNING
 		    "qla2xxx: scsi_host_alloc() failed for vport\n");
 		return(NULL);
 	}

 	vha = shost_priv(host);

 	/* clone the parent hba */
 	memcpy(vha, ha, sizeof (scsi_qla_host_t));

 	fc_vport->dd_data = vha;

 	vha->node_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL);
 	if (!vha->node_name)
 		goto create_vhost_failed_1;

 	vha->port_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL);
 	if (!vha->port_name)
 		goto create_vhost_failed_2;

 	/* New host info */
 	u64_to_wwn(fc_vport->node_name, vha->node_name);
 	u64_to_wwn(fc_vport->port_name, vha->port_name);

 	vha->host = host;
 	vha->host_no = host->host_no;
 	vha->parent = ha;
 	vha->fc_vport = fc_vport;
 	vha->device_flags = 0;
 	vha->instance = num_hosts;
 	vha->vp_idx = qla24xx_allocate_vp_id(vha);
 	if (vha->vp_idx > ha->max_npiv_vports) {
 		DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
 			vha->host_no));
 		goto create_vhost_failed_3;
 	}
 	vha->mgmt_svr_loop_id = 10 + vha->vp_idx;

 	init_completion(&vha->mbx_cmd_comp);
 	complete(&vha->mbx_cmd_comp);
 	init_completion(&vha->mbx_intr_comp);

 	INIT_LIST_HEAD(&vha->list);
 	INIT_LIST_HEAD(&vha->fcports);
 	INIT_LIST_HEAD(&vha->vp_fcports);

 	vha->dpc_flags = 0L;
 	set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 	set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);

 	/*
 	 * To fix the issue of processing a parent's RSCN for the vport before
 	 * its SCR is complete.
 	 */
 	set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 	atomic_set(&vha->loop_state, LOOP_DOWN);
 	atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);

 	qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);

 	host->can_queue = vha->request_q_length + 128;
 	host->this_id = 255;
 	host->cmd_per_lun = 3;
 	host->max_cmd_len = MAX_CMDSZ;
 	host->max_channel = MAX_BUSES - 1;
 	host->max_lun = MAX_LUNS;
 	host->unique_id = vha->instance;
 	host->max_id = MAX_TARGETS_2200;
 	host->transportt = qla2xxx_transport_vport_template;

 	DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
 	    vha->host_no, vha));

 	vha->flags.init_done = 1;
 	num_hosts++;

 	down(&ha->vport_sem);
 	set_bit(vha->vp_idx, ha->vp_idx_map);
 	ha->cur_vport_count++;
 	up(&ha->vport_sem);

 	return vha;

 create_vhost_failed_3:
 	kfree(vha->port_name);

 create_vhost_failed_2:
 	kfree(vha->node_name);

 create_vhost_failed_1:
 	return NULL;
 }
	/*
	* QLogic Fibre Channel HBA Driver
	* Copyright (c) 2003-2008 QLogic Corporation
	*
	* See LICENSE.qla2xxx for copyright and licensing details.
	*/
	#include "qla_def.h"

	#include <linux/version.h>
	#include <linux/moduleparam.h>
	#include <linux/vmalloc.h>
	#include <linux/smp_lock.h>
	#include <linux/list.h>

	#include <scsi/scsi_tcq.h>
	#include <scsi/scsicam.h>
	#include <linux/delay.h>

	void
	qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
	{
	if (vha->parent && vha->timer_active) {
	del_timer_sync(&vha->timer);
	vha->timer_active = 0;
	}
	}

	static uint32_t
	qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
	{
	uint32_t vp_id;
	scsi_qla_host_t *ha = vha->parent;

	/* Find an empty slot and assign an vp_id */
	down(&ha->vport_sem);
	vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
	if (vp_id > ha->max_npiv_vports) {
	DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
	vp_id, ha->max_npiv_vports));
	up(&ha->vport_sem);
	return vp_id;
	}

	set_bit(vp_id, ha->vp_idx_map);
	ha->num_vhosts++;
	vha->vp_idx = vp_id;
	list_add_tail(&vha->vp_list, &ha->vp_list);
	up(&ha->vport_sem);
	return vp_id;
	}

	void
	qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
	{
	uint16_t vp_id;
	scsi_qla_host_t *ha = vha->parent;

	down(&ha->vport_sem);
	vp_id = vha->vp_idx;
	ha->num_vhosts--;
	clear_bit(vp_id, ha->vp_idx_map);
	list_del(&vha->vp_list);
	up(&ha->vport_sem);
	}

	static scsi_qla_host_t *
	qla24xx_find_vhost_by_name(scsi_qla_host_t ha, uint8_t port_name)
	{
	scsi_qla_host_t *vha;

	/* Locate matching device in database. */
	list_for_each_entry(vha, &ha->vp_list, vp_list) {
	if (!memcmp(port_name, vha->port_name, WWN_SIZE))
	return vha;
	}
	return NULL;
	}

	/*
	* qla2x00_mark_vp_devices_dead
	* Updates fcport state when device goes offline.
	*
	* Input:
	* ha = adapter block pointer.
	* fcport = port structure pointer.
	*
	* Return:
	* None.
	*
	* Context:
	*/
	static void
	qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
	{
	fc_port_t *fcport;
	scsi_qla_host_t *pha = to_qla_parent(vha);

	list_for_each_entry(fcport, &pha->fcports, list) {
	if (fcport->vp_idx != vha->vp_idx)
	continue;

	DEBUG15(printk("scsi(%ld): Marking port dead, "
	"loop_id=0x%04x :%x\n",
	vha->host_no, fcport->loop_id, fcport->vp_idx));

	atomic_set(&fcport->state, FCS_DEVICE_DEAD);
	qla2x00_mark_device_lost(vha, fcport, 0, 0);
	}
	}

	int
	qla24xx_disable_vp(scsi_qla_host_t *vha)
	{
	int ret;

	ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
	atomic_set(&vha->loop_state, LOOP_DOWN);
	atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);

	/* Delete all vp's fcports from parent's list */
	qla2x00_mark_vp_devices_dead(vha);
	atomic_set(&vha->vp_state, VP_FAILED);
	vha->flags.management_server_logged_in = 0;
	if (ret == QLA_SUCCESS) {
	fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
	} else {
	fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
	return -1;
	}
	return 0;
	}

	int
	qla24xx_enable_vp(scsi_qla_host_t *vha)
	{
	int ret;
	scsi_qla_host_t *ha = vha->parent;

	/* Check if physical ha port is Up */
	if (atomic_read(&ha->loop_state) == LOOP_DOWN \|\|
	atomic_read(&ha->loop_state) == LOOP_DEAD ) {
	vha->vp_err_state = VP_ERR_PORTDWN;
	fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
	goto enable_failed;
	}

	/* Initialize the new vport unless it is a persistent port */
	down(&ha->vport_sem);
	ret = qla24xx_modify_vp_config(vha);
	up(&ha->vport_sem);

	if (ret != QLA_SUCCESS) {
	fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
	goto enable_failed;
	}

	DEBUG15(qla_printk(KERN_INFO, ha,
	"Virtual port with id: %d - Enabled\n", vha->vp_idx));
	return 0;

	enable_failed:
	DEBUG15(qla_printk(KERN_INFO, ha,
	"Virtual port with id: %d - Disabled\n", vha->vp_idx));
	return 1;
	}

	static void
	qla24xx_configure_vp(scsi_qla_host_t *vha)
	{
	struct fc_vport *fc_vport;
	int ret;

	fc_vport = vha->fc_vport;

	DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
	vha->host_no, __func__));
	ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
	if (ret != QLA_SUCCESS) {
	DEBUG15(qla_printk(KERN_ERR, vha, "Failed to enable receiving"
	" of RSCN requests: 0x%x\n", ret));
	return;
	} else {
	/* Corresponds to SCR enabled */
	clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
	}

	vha->flags.online = 1;
	if (qla24xx_configure_vhba(vha))
	return;

	atomic_set(&vha->vp_state, VP_ACTIVE);
	fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
	}

	void
	qla2x00_alert_all_vps(scsi_qla_host_t ha, uint16_t mb)
	{
	int i, vp_idx_matched;
	scsi_qla_host_t *vha;

	if (ha->parent)
	return;

	for_each_mapped_vp_idx(ha, i) {
	vp_idx_matched = 0;

	list_for_each_entry(vha, &ha->vp_list, vp_list) {
	if (i == vha->vp_idx) {
	vp_idx_matched = 1;
	break;
	}
	}

	if (vp_idx_matched) {
	switch (mb[0]) {
	case MBA_LIP_OCCURRED:
	case MBA_LOOP_UP:
	case MBA_LOOP_DOWN:
	case MBA_LIP_RESET:
	case MBA_POINT_TO_POINT:
	case MBA_CHG_IN_CONNECTION:
	case MBA_PORT_UPDATE:
	case MBA_RSCN_UPDATE:
	DEBUG15(printk("scsi(%ld)%s: Async_event for"
	" VP[%d], mb = 0x%x, vha=%p\n",
	vha->host_no, __func__,i, *mb, vha));
	qla2x00_async_event(vha, mb);
	break;
	}
	}
	}
	}

	void
	qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
	{
	/*
	* Physical port will do most of the abort and recovery work. We can
	* just treat it as a loop down
	*/
	if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
	atomic_set(&vha->loop_state, LOOP_DOWN);
	qla2x00_mark_all_devices_lost(vha, 0);
	} else {
	if (!atomic_read(&vha->loop_down_timer))
	atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
	}

	DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
	vha->host_no, vha->vp_idx));
	qla24xx_enable_vp(vha);
	}

	static int
	qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
	{
	scsi_qla_host_t *ha = vha->parent;

	if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
	/* VP acquired. complete port configuration */
	if (atomic_read(&ha->loop_state) == LOOP_READY) {
	qla24xx_configure_vp(vha);
	} else {
	set_bit(VP_IDX_ACQUIRED, &vha->vp_flags);
	set_bit(VP_DPC_NEEDED, &ha->dpc_flags);
	}

	return 0;
	}

	if (test_and_clear_bit(ISP_ABORT_NEEDED, &vha->dpc_flags))
	qla2x00_vp_abort_isp(vha);

	if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
	(!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
	clear_bit(RESET_ACTIVE, &vha->dpc_flags);
	}

	if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
	if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
	qla2x00_loop_resync(vha);
	clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
	}
	}

	return 0;
	}

	void
	qla2x00_do_dpc_all_vps(scsi_qla_host_t *ha)
	{
	int ret;
	int i, vp_idx_matched;
	scsi_qla_host_t *vha;

	if (ha->parent)
	return;
	if (list_empty(&ha->vp_list))
	return;

	clear_bit(VP_DPC_NEEDED, &ha->dpc_flags);

	for_each_mapped_vp_idx(ha, i) {
	vp_idx_matched = 0;

	list_for_each_entry(vha, &ha->vp_list, vp_list) {
	if (i == vha->vp_idx) {
	vp_idx_matched = 1;
	break;
	}
	}

	if (vp_idx_matched)
	ret = qla2x00_do_dpc_vp(vha);
	}
	}

	int
	qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
	{
	scsi_qla_host_t *ha = shost_priv(fc_vport->shost);
	scsi_qla_host_t *vha;
	uint8_t port_name[WWN_SIZE];

	if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
	return VPCERR_UNSUPPORTED;

	/* Check up the F/W and H/W support NPIV */
	if (!ha->flags.npiv_supported)
	return VPCERR_UNSUPPORTED;

	/* Check up whether npiv supported switch presented */
	if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
	return VPCERR_NO_FABRIC_SUPP;

	/* Check up unique WWPN */
	u64_to_wwn(fc_vport->port_name, port_name);
	if (!memcmp(port_name, ha->port_name, WWN_SIZE))
	return VPCERR_BAD_WWN;
	vha = qla24xx_find_vhost_by_name(ha, port_name);
	if (vha)
	return VPCERR_BAD_WWN;

	/* Check up max-npiv-supports */
	if (ha->num_vhosts > ha->max_npiv_vports) {
	DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
	"max_npv_vports %ud.\n", ha->host_no,
	ha->num_vhosts, ha->max_npiv_vports));
	return VPCERR_UNSUPPORTED;
	}
	return 0;
	}

	scsi_qla_host_t *
	qla24xx_create_vhost(struct fc_vport *fc_vport)
	{
	scsi_qla_host_t *ha = shost_priv(fc_vport->shost);
	scsi_qla_host_t *vha;
	struct Scsi_Host *host;

	host = scsi_host_alloc(&qla24xx_driver_template,
	sizeof(scsi_qla_host_t));
	if (!host) {
	printk(KERN_WARNING
	"qla2xxx: scsi_host_alloc() failed for vport\n");
	return(NULL);
	}

	vha = shost_priv(host);

	/* clone the parent hba */
	memcpy(vha, ha, sizeof (scsi_qla_host_t));

	fc_vport->dd_data = vha;

	vha->node_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL);
	if (!vha->node_name)
	goto create_vhost_failed_1;

	vha->port_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL);
	if (!vha->port_name)
	goto create_vhost_failed_2;

	/* New host info */
	u64_to_wwn(fc_vport->node_name, vha->node_name);
	u64_to_wwn(fc_vport->port_name, vha->port_name);

	vha->host = host;
	vha->host_no = host->host_no;
	vha->parent = ha;
	vha->fc_vport = fc_vport;
	vha->device_flags = 0;
	vha->instance = num_hosts;
	vha->vp_idx = qla24xx_allocate_vp_id(vha);
	if (vha->vp_idx > ha->max_npiv_vports) {
	DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
	vha->host_no));
	goto create_vhost_failed_3;
	}
	vha->mgmt_svr_loop_id = 10 + vha->vp_idx;

	init_completion(&vha->mbx_cmd_comp);
	complete(&vha->mbx_cmd_comp);
	init_completion(&vha->mbx_intr_comp);

	INIT_LIST_HEAD(&vha->list);
	INIT_LIST_HEAD(&vha->fcports);
	INIT_LIST_HEAD(&vha->vp_fcports);

	vha->dpc_flags = 0L;
	set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
	set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);

	/*
	* To fix the issue of processing a parent's RSCN for the vport before
	* its SCR is complete.
	*/
	set_bit(VP_SCR_NEEDED, &vha->vp_flags);
	atomic_set(&vha->loop_state, LOOP_DOWN);
	atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);

	qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);

	host->can_queue = vha->request_q_length + 128;
	host->this_id = 255;
	host->cmd_per_lun = 3;
	host->max_cmd_len = MAX_CMDSZ;
	host->max_channel = MAX_BUSES - 1;
	host->max_lun = MAX_LUNS;
	host->unique_id = vha->instance;
	host->max_id = MAX_TARGETS_2200;
	host->transportt = qla2xxx_transport_vport_template;

	DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
	vha->host_no, vha));

	vha->flags.init_done = 1;
	num_hosts++;

	down(&ha->vport_sem);
	set_bit(vha->vp_idx, ha->vp_idx_map);
	ha->cur_vport_count++;
	up(&ha->vport_sem);

	return vha;

	create_vhost_failed_3:
	kfree(vha->port_name);

	create_vhost_failed_2:
	kfree(vha->node_name);

	create_vhost_failed_1:
	return NULL;
	}