/* * 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: */ 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; 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 = 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); 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 = 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_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; }