drivers/scsi/bfa/lport_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
  18 /**
  19  *  port_api.c BFA FCS port
  20  */
  21
  22 #include <fcs/bfa_fcs.h>
  23 #include <fcs/bfa_fcs_lport.h>
  24 #include <fcs/bfa_fcs_rport.h>
  25 #include "fcs_rport.h"
  26 #include "fcs_fabric.h"
  27 #include "fcs_trcmod.h"
  28 #include "fcs_vport.h"
  29
  30 BFA_TRC_FILE(FCS, PORT_API);
  31
  32
  33
  34 /**
  35  *  fcs_port_api BFA FCS port API
  36  */
  37
  38 void
  39 bfa_fcs_cfg_base_port(struct bfa_fcs_s *fcs, struct bfa_port_cfg_s *port_cfg)
  40 {
  41 }
  42
  43 struct bfa_fcs_port_s *
  44 bfa_fcs_get_base_port(struct bfa_fcs_s *fcs)
  45 {
  46         return (&fcs->fabric.bport);
  47 }
  48
  49 wwn_t
  50 bfa_fcs_port_get_rport(struct bfa_fcs_port_s *port, wwn_t wwn, int index,
  51                        int nrports, bfa_boolean_t bwwn)
  52 {
  53         struct list_head *qh, *qe;
  54         struct bfa_fcs_rport_s *rport = NULL;
  55         int             i;
  56         struct bfa_fcs_s *fcs;
  57
  58         if (port == NULL || nrports == 0)
  59                 return (wwn_t) 0;
  60
  61         fcs = port->fcs;
  62         bfa_trc(fcs, (u32) nrports);
  63
  64         i = 0;
  65         qh = &port->rport_q;
  66         qe = bfa_q_first(qh);
  67
  68         while ((qe != qh) && (i < nrports)) {
  69                 rport = (struct bfa_fcs_rport_s *)qe;
  70                 if (bfa_os_ntoh3b(rport->pid) > 0xFFF000) {
  71                         qe = bfa_q_next(qe);
  72                         bfa_trc(fcs, (u32) rport->pwwn);
  73                         bfa_trc(fcs, rport->pid);
  74                         bfa_trc(fcs, i);
  75                         continue;
  76                 }
  77
  78                 if (bwwn) {
  79                         if (!memcmp(&wwn, &rport->pwwn, 8))
  80                                 break;
  81                 } else {
  82                         if (i == index)
  83                                 break;
  84                 }
  85
  86                 i++;
  87                 qe = bfa_q_next(qe);
  88         }
  89
  90         bfa_trc(fcs, i);
  91         if (rport) {
  92                 return rport->pwwn;
  93         } else {
  94                 return (wwn_t) 0;
  95         }
  96 }
  97
  98 void
  99 bfa_fcs_port_get_rports(struct bfa_fcs_port_s *port, wwn_t rport_wwns[],
 100                         int *nrports)
 101 {
 102         struct list_head *qh, *qe;
 103         struct bfa_fcs_rport_s *rport = NULL;
 104         int             i;
 105         struct bfa_fcs_s *fcs;
 106
 107         if (port == NULL || rport_wwns == NULL || *nrports == 0)
 108                 return;
 109
 110         fcs = port->fcs;
 111         bfa_trc(fcs, (u32) *nrports);
 112
 113         i = 0;
 114         qh = &port->rport_q;
 115         qe = bfa_q_first(qh);
 116
 117         while ((qe != qh) && (i < *nrports)) {
 118                 rport = (struct bfa_fcs_rport_s *)qe;
 119                 if (bfa_os_ntoh3b(rport->pid) > 0xFFF000) {
 120                         qe = bfa_q_next(qe);
 121                         bfa_trc(fcs, (u32) rport->pwwn);
 122                         bfa_trc(fcs, rport->pid);
 123                         bfa_trc(fcs, i);
 124                         continue;
 125                 }
 126
 127                 rport_wwns[i] = rport->pwwn;
 128
 129                 i++;
 130                 qe = bfa_q_next(qe);
 131         }
 132
 133         bfa_trc(fcs, i);
 134         *nrports = i;
 135         return;
 136 }
 137
 138 /*
 139  * Iterate's through all the rport's in the given port to
 140  * determine the maximum operating speed.
 141  */
 142 enum bfa_pport_speed
 143 bfa_fcs_port_get_rport_max_speed(struct bfa_fcs_port_s *port)
 144 {
 145         struct list_head *qh, *qe;
 146         struct bfa_fcs_rport_s *rport = NULL;
 147         struct bfa_fcs_s *fcs;
 148         enum bfa_pport_speed max_speed = 0;
 149         struct bfa_pport_attr_s pport_attr;
 150         enum bfa_pport_speed pport_speed;
 151
 152         if (port == NULL)
 153                 return 0;
 154
 155         fcs = port->fcs;
 156
 157         /*
 158          * Get Physical port's current speed
 159          */
 160         bfa_pport_get_attr(port->fcs->bfa, &pport_attr);
 161         pport_speed = pport_attr.speed;
 162         bfa_trc(fcs, pport_speed);
 163
 164         qh = &port->rport_q;
 165         qe = bfa_q_first(qh);
 166
 167         while (qe != qh) {
 168                 rport = (struct bfa_fcs_rport_s *)qe;
 169                 if ((bfa_os_ntoh3b(rport->pid) > 0xFFF000)
 170                     || (bfa_fcs_rport_get_state(rport) == BFA_RPORT_OFFLINE)) {
 171                         qe = bfa_q_next(qe);
 172                         continue;
 173                 }
 174
 175                 if ((rport->rpf.rpsc_speed == BFA_PPORT_SPEED_8GBPS)
 176                     || (rport->rpf.rpsc_speed > pport_speed)) {
 177                         max_speed = rport->rpf.rpsc_speed;
 178                         break;
 179                 } else if (rport->rpf.rpsc_speed > max_speed) {
 180                         max_speed = rport->rpf.rpsc_speed;
 181                 }
 182
 183                 qe = bfa_q_next(qe);
 184         }
 185
 186         bfa_trc(fcs, max_speed);
 187         return max_speed;
 188 }
 189
 190 struct bfa_fcs_port_s *
 191 bfa_fcs_lookup_port(struct bfa_fcs_s *fcs, u16 vf_id, wwn_t lpwwn)
 192 {
 193         struct bfa_fcs_vport_s *vport;
 194         bfa_fcs_vf_t   *vf;
 195
 196         bfa_assert(fcs != NULL);
 197
 198         vf = bfa_fcs_vf_lookup(fcs, vf_id);
 199         if (vf == NULL) {
 200                 bfa_trc(fcs, vf_id);
 201                 return (NULL);
 202         }
 203
 204         if (!lpwwn || (vf->bport.port_cfg.pwwn == lpwwn))
 205                 return (&vf->bport);
 206
 207         vport = bfa_fcs_fabric_vport_lookup(vf, lpwwn);
 208         if (vport)
 209                 return (&vport->lport);
 210
 211         return (NULL);
 212 }
 213
 214 /*
 215  *  API corresponding to VmWare's NPIV_VPORT_GETINFO.
 216  */
 217 void
 218 bfa_fcs_port_get_info(struct bfa_fcs_port_s *port,
 219                       struct bfa_port_info_s *port_info)
 220 {
 221
 222         bfa_trc(port->fcs, port->fabric->fabric_name);
 223
 224         if (port->vport == NULL) {
 225                 /*
 226                  * This is a Physical port
 227                  */
 228                 port_info->port_type = BFA_PORT_TYPE_PHYSICAL;
 229
 230                 /*
 231                  * @todo : need to fix the state & reason
 232                  */
 233                 port_info->port_state = 0;
 234                 port_info->offline_reason = 0;
 235
 236                 port_info->port_wwn = bfa_fcs_port_get_pwwn(port);
 237                 port_info->node_wwn = bfa_fcs_port_get_nwwn(port);
 238
 239                 port_info->max_vports_supp = bfa_fcs_vport_get_max(port->fcs);
 240                 port_info->num_vports_inuse =
 241                         bfa_fcs_fabric_vport_count(port->fabric);
 242                 port_info->max_rports_supp = BFA_FCS_MAX_RPORTS_SUPP;
 243                 port_info->num_rports_inuse = port->num_rports;
 244         } else {
 245                 /*
 246                  * This is a virtual port
 247                  */
 248                 port_info->port_type = BFA_PORT_TYPE_VIRTUAL;
 249
 250                 /*
 251                  * @todo : need to fix the state & reason
 252                  */
 253                 port_info->port_state = 0;
 254                 port_info->offline_reason = 0;
 255
 256                 port_info->port_wwn = bfa_fcs_port_get_pwwn(port);
 257                 port_info->node_wwn = bfa_fcs_port_get_nwwn(port);
 258         }
 259 }
 260
 261 void
 262 bfa_fcs_port_get_stats(struct bfa_fcs_port_s *fcs_port,
 263                        struct bfa_port_stats_s *port_stats)
 264 {
 265         bfa_os_memcpy(port_stats, &fcs_port->stats,
 266                       sizeof(struct bfa_port_stats_s));
 267         return;
 268 }
 269
 270 void
 271 bfa_fcs_port_clear_stats(struct bfa_fcs_port_s *fcs_port)
 272 {
 273         bfa_os_memset(&fcs_port->stats, 0, sizeof(struct bfa_port_stats_s));
 274         return;
 275 }
 276
 277 void
 278 bfa_fcs_port_enable_ipfc_roles(struct bfa_fcs_port_s *fcs_port)
 279 {
 280         fcs_port->port_cfg.roles |= BFA_PORT_ROLE_FCP_IPFC;
 281         return;
 282 }
 283
 284 void
 285 bfa_fcs_port_disable_ipfc_roles(struct bfa_fcs_port_s *fcs_port)
 286 {
 287         fcs_port->port_cfg.roles &= ~BFA_PORT_ROLE_FCP_IPFC;
 288         return;
 289 }
 290
 291