drivers/scsi/bfa/rport_api.c

   1 /*
   2  * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17 #include <bfa.h>
  18 #include <bfa_svc.h>
  19 #include "fcs_vport.h"
  20 #include "fcs_lport.h"
  21 #include "fcs_rport.h"
  22 #include "fcs_trcmod.h"
  23
  24 BFA_TRC_FILE(FCS, RPORT_API);
  25
  26 /**
  27  *  rport_api.c Remote port implementation.
  28  */
  29
  30 /**
  31  *  fcs_rport_api FCS rport API.
  32  */
  33
  34 /**
  35  *      Direct API to add a target by port wwn. This interface is used, for
  36  *      example, by bios when target pwwn is known from boot lun configuration.
  37  */
  38 bfa_status_t
  39 bfa_fcs_rport_add(struct bfa_fcs_port_s *port, wwn_t *pwwn,
  40                         struct bfa_fcs_rport_s *rport,
  41                         struct bfad_rport_s *rport_drv)
  42 {
  43         bfa_trc(port->fcs, *pwwn);
  44
  45         return BFA_STATUS_OK;
  46 }
  47
  48 /**
  49  *      Direct API to remove a target and its associated resources. This
  50  *      interface is used, for example, by vmware driver to remove target
  51  *      ports from the target list for a VM.
  52  */
  53 bfa_status_t
  54 bfa_fcs_rport_remove(struct bfa_fcs_rport_s *rport_in)
  55 {
  56
  57         struct bfa_fcs_rport_s *rport;
  58
  59         bfa_trc(rport_in->fcs, rport_in->pwwn);
  60
  61         rport = bfa_fcs_port_get_rport_by_pwwn(rport_in->port, rport_in->pwwn);
  62         if (rport == NULL) {
  63                 /*
  64                  * TBD Error handling
  65                  */
  66                 bfa_trc(rport_in->fcs, rport_in->pid);
  67                 return BFA_STATUS_UNKNOWN_RWWN;
  68         }
  69
  70         /*
  71          * TBD if this remote port is online, send a logo
  72          */
  73         return BFA_STATUS_OK;
  74
  75 }
  76
  77 /**
  78  *      Remote device status for display/debug.
  79  */
  80 void
  81 bfa_fcs_rport_get_attr(struct bfa_fcs_rport_s *rport,
  82                         struct bfa_rport_attr_s *rport_attr)
  83 {
  84         struct bfa_rport_qos_attr_s qos_attr;
  85         struct bfa_fcs_port_s *port = rport->port;
  86
  87         bfa_os_memset(rport_attr, 0, sizeof(struct bfa_rport_attr_s));
  88
  89         rport_attr->pid = rport->pid;
  90         rport_attr->pwwn = rport->pwwn;
  91         rport_attr->nwwn = rport->nwwn;
  92         rport_attr->cos_supported = rport->fc_cos;
  93         rport_attr->df_sz = rport->maxfrsize;
  94         rport_attr->state = bfa_fcs_rport_get_state(rport);
  95         rport_attr->fc_cos = rport->fc_cos;
  96         rport_attr->cisc = rport->cisc;
  97         rport_attr->scsi_function = rport->scsi_function;
  98         rport_attr->curr_speed  = rport->rpf.rpsc_speed;
  99         rport_attr->assigned_speed  = rport->rpf.assigned_speed;
 100
 101         bfa_rport_get_qos_attr(rport->bfa_rport, &qos_attr);
 102         rport_attr->qos_attr = qos_attr;
 103
 104         rport_attr->trl_enforced = BFA_FALSE;
 105         if (bfa_pport_is_ratelim(port->fcs->bfa)) {
 106                 if ((rport->rpf.rpsc_speed == BFA_PPORT_SPEED_UNKNOWN) ||
 107                         (rport->rpf.rpsc_speed <
 108                         bfa_fcs_port_get_rport_max_speed(port)))
 109                         rport_attr->trl_enforced = BFA_TRUE;
 110         }
 111
 112         /*
 113          * TODO
 114          * rport->symname
 115          */
 116 }
 117
 118 /**
 119  *      Per remote device statistics.
 120  */
 121 void
 122 bfa_fcs_rport_get_stats(struct bfa_fcs_rport_s *rport,
 123                         struct bfa_rport_stats_s *stats)
 124 {
 125         *stats = rport->stats;
 126 }
 127
 128 void
 129 bfa_fcs_rport_clear_stats(struct bfa_fcs_rport_s *rport)
 130 {
 131         bfa_os_memset((char *)&rport->stats, 0,
 132                         sizeof(struct bfa_rport_stats_s));
 133 }
 134
 135 struct bfa_fcs_rport_s *
 136 bfa_fcs_rport_lookup(struct bfa_fcs_port_s *port, wwn_t rpwwn)
 137 {
 138         struct bfa_fcs_rport_s *rport;
 139
 140         rport = bfa_fcs_port_get_rport_by_pwwn(port, rpwwn);
 141         if (rport == NULL) {
 142                 /*
 143                  * TBD Error handling
 144                  */
 145         }
 146
 147         return rport;
 148 }
 149
 150 struct bfa_fcs_rport_s *
 151 bfa_fcs_rport_lookup_by_nwwn(struct bfa_fcs_port_s *port, wwn_t rnwwn)
 152 {
 153         struct bfa_fcs_rport_s *rport;
 154
 155         rport = bfa_fcs_port_get_rport_by_nwwn(port, rnwwn);
 156         if (rport == NULL) {
 157                 /*
 158                  * TBD Error handling
 159                  */
 160         }
 161
 162         return rport;
 163 }
 164
 165 /*
 166  * This API is to set the Rport's speed. Should be used when RPSC is not
 167  * supported by the rport.
 168  */
 169 void
 170 bfa_fcs_rport_set_speed(struct bfa_fcs_rport_s *rport,
 171                         enum bfa_pport_speed speed)
 172 {
 173         rport->rpf.assigned_speed  = speed;
 174
 175         /* Set this speed in f/w only if the RPSC speed is not available */
 176         if (rport->rpf.rpsc_speed == BFA_PPORT_SPEED_UNKNOWN)
 177                 bfa_rport_speed(rport->bfa_rport, speed);
 178 }
 179
 180