/*
* QLOGIC LINUX SOFTWARE
*
* QLogic ISP2x00 device driver for Linux 2.6.x
* Copyright (C) 2003-2005 QLogic Corporation
* (www.qlogic.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more 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 *);
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;
}
}
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((unsigned long *)ha->vp_idx_map,
MAX_MULTI_ID_FABRIC);
if (vp_id > MAX_MULTI_ID_FABRIC) {
DEBUG15(printk ("vp_id %d is bigger than MAX_MULTI_ID_FABRID\n",
vp_id));
up(&ha->vport_sem);
return vp_id;
}
set_bit(vp_id, (unsigned long *)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, (unsigned long *)ha->vp_idx_map);
list_del(&vha->vp_list);
up(&ha->vport_sem);
}
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:
*/
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;
}
/**
* qla24xx_modify_vport() - Modifies the virtual fabric port's configuration
* @ha: HA context
* @vp: pointer to buffer of virtual port parameters.
* @ret_code: return error code:
*
* Returns the virtual port id, or MAX_VSAN_ID, if couldn't create.
*/
uint32_t
qla24xx_modify_vhba(scsi_qla_host_t *ha, vport_params_t *vp, uint32_t *vp_id)
{
scsi_qla_host_t *vha;
vha = qla24xx_find_vhost_by_name(ha, vp->port_name);
if (!vha) {
*vp_id = MAX_NUM_VPORT_LOOP;
return VP_RET_CODE_WWPN;
}
if (qla24xx_enable_vp(vha)) {
scsi_host_put(vha->host);
qla2x00_mem_free(vha);
*vp_id = MAX_NUM_VPORT_LOOP;
return VP_RET_CODE_RESOURCES;
}
*vp_id = vha->vp_idx;
return VP_RET_CODE_OK;
}
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;
i = find_next_bit((unsigned long *)ha->vp_idx_map,
MAX_MULTI_ID_FABRIC + 1, 1);
for (;i <= MAX_MULTI_ID_FABRIC;
i = find_next_bit((unsigned long *)ha->vp_idx_map,
MAX_MULTI_ID_FABRIC + 1, i + 1)) {
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);
}
int
qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
{
if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
/* VP acquired. complete port configuration */
qla24xx_configure_vp(vha);
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);
i = find_next_bit((unsigned long *)ha->vp_idx_map,
MAX_MULTI_ID_FABRIC + 1, 1);
for (;i <= MAX_MULTI_ID_FABRIC;
i = find_next_bit((unsigned long *)ha->vp_idx_map,
MAX_MULTI_ID_FABRIC + 1, i + 1)) {
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 = (scsi_qla_host_t *) fc_vport->shost->hostdata;
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);
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 %d is bigger than "
"max_npv_vports %d.\n", ha->host_no,
(uint16_t) ha->num_vhosts, (int) 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 = (scsi_qla_host_t *) fc_vport->shost->hostdata;
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 = (scsi_qla_host_t *)host->hostdata;
/* 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_MUTEX(&vha->mbx_cmd_sem);
init_MUTEX_LOCKED(&vha->mbx_intr_sem);
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, (unsigned long *)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;
}
