drivers/net/chelsio/cxgb2.c

   1 /*****************************************************************************
   2  *                                                                           *
   3  * File: cxgb2.c                                                             *
   4  * $Revision: 1.25 $                                                         *
   5  * $Date: 2005/06/22 00:43:25 $                                              *
   6  * Description:                                                              *
   7  *  Chelsio 10Gb Ethernet Driver.                                            *
   8  *                                                                           *
   9  * This program is free software; you can redistribute it and/or modify      *
  10  * it under the terms of the GNU General Public License, version 2, as       *
  11  * published by the Free Software Foundation.                                *
  12  *                                                                           *
  13  * You should have received a copy of the GNU General Public License along   *
  14  * with this program; if not, write to the Free Software Foundation, Inc.,   *
  15  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.                 *
  16  *                                                                           *
  17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED    *
  18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF      *
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.                     *
  20  *                                                                           *
  21  * http://www.chelsio.com                                                    *
  22  *                                                                           *
  23  * Copyright (c) 2003 - 2005 Chelsio Communications, Inc.                    *
  24  * All rights reserved.                                                      *
  25  *                                                                           *
  26  * Maintainers: maintainers@chelsio.com                                      *
  27  *                                                                           *
  28  * Authors: Dimitrios Michailidis   <dm@chelsio.com>                         *
  29  *          Tina Yang               <tainay@chelsio.com>                     *
  30  *          Felix Marti             <felix@chelsio.com>                      *
  31  *          Scott Bardone           <sbardone@chelsio.com>                   *
  32  *          Kurt Ottaway            <kottaway@chelsio.com>                   *
  33  *          Frank DiMambro          <frank@chelsio.com>                      *
  34  *                                                                           *
  35  * History:                                                                  *
  36  *                                                                           *
  37  ****************************************************************************/
  38
  39 #include "common.h"
  40 #include <linux/module.h>
  41 #include <linux/init.h>
  42 #include <linux/pci.h>
  43 #include <linux/netdevice.h>
  44 #include <linux/etherdevice.h>
  45 #include <linux/if_vlan.h>
  46 #include <linux/mii.h>
  47 #include <linux/sockios.h>
  48 #include <linux/dma-mapping.h>
  49 #include <asm/uaccess.h>
  50
  51 #include "cpl5_cmd.h"
  52 #include "regs.h"
  53 #include "gmac.h"
  54 #include "cphy.h"
  55 #include "sge.h"
  56 #include "tp.h"
  57 #include "espi.h"
  58 #include "elmer0.h"
  59
  60 #include <linux/workqueue.h>
  61
  62 static inline void schedule_mac_stats_update(struct adapter *ap, int secs)
  63 {
  64         schedule_delayed_work(&ap->stats_update_task, secs * HZ);
  65 }
  66
  67 static inline void cancel_mac_stats_update(struct adapter *ap)
  68 {
  69         cancel_delayed_work(&ap->stats_update_task);
  70 }
  71
  72 #define MAX_CMDQ_ENTRIES 16384
  73 #define MAX_CMDQ1_ENTRIES 1024
  74 #define MAX_RX_BUFFERS 16384
  75 #define MAX_RX_JUMBO_BUFFERS 16384
  76 #define MAX_TX_BUFFERS_HIGH     16384U
  77 #define MAX_TX_BUFFERS_LOW      1536U
  78 #define MAX_TX_BUFFERS          1460U
  79 #define MIN_FL_ENTRIES 32
  80
  81 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
  82                          NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
  83                          NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
  84
  85 /*
  86  * The EEPROM is actually bigger but only the first few bytes are used so we
  87  * only report those.
  88  */
  89 #define EEPROM_SIZE 32
  90
  91 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  92 MODULE_AUTHOR("Chelsio Communications");
  93 MODULE_LICENSE("GPL");
  94
  95 static int dflt_msg_enable = DFLT_MSG_ENABLE;
  96
  97 module_param(dflt_msg_enable, int, 0);
  98 MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T1 default message enable bitmap");
  99
 100 #define HCLOCK 0x0
 101 #define LCLOCK 0x1
 102
 103 /* T1 cards powersave mode */
 104 static int t1_clock(struct adapter *adapter, int mode);
 105 static int t1powersave = 1;     /* HW default is powersave mode. */
 106
 107 module_param(t1powersave, int, 0);
 108 MODULE_PARM_DESC(t1powersave, "Enable/Disable T1 powersaving mode");
 109
 110 static int disable_msi = 0;
 111 module_param(disable_msi, int, 0);
 112 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
 113
 114 static const char pci_speed[][4] = {
 115         "33", "66", "100", "133"
 116 };
 117
 118 /*
 119  * Setup MAC to receive the types of packets we want.
 120  */
 121 static void t1_set_rxmode(struct net_device *dev)
 122 {
 123         struct adapter *adapter = dev->priv;
 124         struct cmac *mac = adapter->port[dev->if_port].mac;
 125         struct t1_rx_mode rm;
 126
 127         rm.dev = dev;
 128         rm.idx = 0;
 129         rm.list = dev->mc_list;
 130         mac->ops->set_rx_mode(mac, &rm);
 131 }
 132
 133 static void link_report(struct port_info *p)
 134 {
 135         if (!netif_carrier_ok(p->dev))
 136                 printk(KERN_INFO "%s: link down\n", p->dev->name);
 137         else {
 138                 const char *s = "10Mbps";
 139
 140                 switch (p->link_config.speed) {
 141                         case SPEED_10000: s = "10Gbps"; break;
 142                         case SPEED_1000:  s = "1000Mbps"; break;
 143                         case SPEED_100:   s = "100Mbps"; break;
 144                 }
 145
 146         printk(KERN_INFO "%s: link up, %s, %s-duplex\n",
 147                        p->dev->name, s,
 148                        p->link_config.duplex == DUPLEX_FULL ? "full" : "half");
 149         }
 150 }
 151
 152 void t1_link_negotiated(struct adapter *adapter, int port_id, int link_stat,
 153                         int speed, int duplex, int pause)
 154 {
 155         struct port_info *p = &adapter->port[port_id];
 156
 157         if (link_stat != netif_carrier_ok(p->dev)) {
 158                 if (link_stat)
 159                         netif_carrier_on(p->dev);
 160                 else
 161                         netif_carrier_off(p->dev);
 162                 link_report(p);
 163
 164                 /* multi-ports: inform toe */
 165                 if ((speed > 0) && (adapter->params.nports > 1)) {
 166                         unsigned int sched_speed = 10;
 167                         switch (speed) {
 168                         case SPEED_1000:
 169                                 sched_speed = 1000;
 170                                 break;
 171                         case SPEED_100:
 172                                 sched_speed = 100;
 173                                 break;
 174                         case SPEED_10:
 175                                 sched_speed = 10;
 176                                 break;
 177                         }
 178                         t1_sched_update_parms(adapter->sge, port_id, 0, sched_speed);
 179                 }
 180         }
 181 }
 182
 183 static void link_start(struct port_info *p)
 184 {
 185         struct cmac *mac = p->mac;
 186
 187         mac->ops->reset(mac);
 188         if (mac->ops->macaddress_set)
 189                 mac->ops->macaddress_set(mac, p->dev->dev_addr);
 190         t1_set_rxmode(p->dev);
 191         t1_link_start(p->phy, mac, &p->link_config);
 192         mac->ops->enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
 193 }
 194
 195 static void enable_hw_csum(struct adapter *adapter)
 196 {
 197         if (adapter->flags & TSO_CAPABLE)
 198                 t1_tp_set_ip_checksum_offload(adapter->tp, 1);  /* for TSO only */
 199         if (adapter->flags & UDP_CSUM_CAPABLE)
 200                 t1_tp_set_udp_checksum_offload(adapter->tp, 1);
 201         t1_tp_set_tcp_checksum_offload(adapter->tp, 1);
 202 }
 203
 204 /*
 205  * Things to do upon first use of a card.
 206  * This must run with the rtnl lock held.
 207  */
 208 static int cxgb_up(struct adapter *adapter)
 209 {
 210         int err = 0;
 211
 212         if (!(adapter->flags & FULL_INIT_DONE)) {
 213                 err = t1_init_hw_modules(adapter);
 214                 if (err)
 215                         goto out_err;
 216
 217                 enable_hw_csum(adapter);
 218                 adapter->flags |= FULL_INIT_DONE;
 219         }
 220
 221         t1_interrupts_clear(adapter);
 222
 223         adapter->params.has_msi = !disable_msi && pci_enable_msi(adapter->pdev) == 0;
 224         err = request_irq(adapter->pdev->irq,
 225                           t1_select_intr_handler(adapter),
 226                           adapter->params.has_msi ? 0 : IRQF_SHARED,
 227                           adapter->name, adapter);
 228         if (err) {
 229                 if (adapter->params.has_msi)
 230                         pci_disable_msi(adapter->pdev);
 231
 232                 goto out_err;
 233         }
 234
 235         t1_sge_start(adapter->sge);
 236         t1_interrupts_enable(adapter);
 237  out_err:
 238         return err;
 239 }
 240
 241 /*
 242  * Release resources when all the ports have been stopped.
 243  */
 244 static void cxgb_down(struct adapter *adapter)
 245 {
 246         t1_sge_stop(adapter->sge);
 247         t1_interrupts_disable(adapter);
 248         free_irq(adapter->pdev->irq, adapter);
 249         if (adapter->params.has_msi)
 250                 pci_disable_msi(adapter->pdev);
 251 }
 252
 253 static int cxgb_open(struct net_device *dev)
 254 {
 255         int err;
 256         struct adapter *adapter = dev->priv;
 257         int other_ports = adapter->open_device_map & PORT_MASK;
 258
 259         if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0)
 260                 return err;
 261
 262         __set_bit(dev->if_port, &adapter->open_device_map);
 263         link_start(&adapter->port[dev->if_port]);
 264         netif_start_queue(dev);
 265         if (!other_ports && adapter->params.stats_update_period)
 266                 schedule_mac_stats_update(adapter,
 267                                           adapter->params.stats_update_period);
 268         return 0;
 269 }
 270
 271 static int cxgb_close(struct net_device *dev)
 272 {
 273         struct adapter *adapter = dev->priv;
 274         struct port_info *p = &adapter->port[dev->if_port];
 275         struct cmac *mac = p->mac;
 276
 277         netif_stop_queue(dev);
 278         mac->ops->disable(mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX);
 279         netif_carrier_off(dev);
 280
 281         clear_bit(dev->if_port, &adapter->open_device_map);
 282         if (adapter->params.stats_update_period &&
 283             !(adapter->open_device_map & PORT_MASK)) {
 284                 /* Stop statistics accumulation. */
 285                 smp_mb__after_clear_bit();
 286                 spin_lock(&adapter->work_lock);   /* sync with update task */
 287                 spin_unlock(&adapter->work_lock);
 288                 cancel_mac_stats_update(adapter);
 289         }
 290
 291         if (!adapter->open_device_map)
 292                 cxgb_down(adapter);
 293         return 0;
 294 }
 295
 296 static struct net_device_stats *t1_get_stats(struct net_device *dev)
 297 {
 298         struct adapter *adapter = dev->priv;
 299         struct port_info *p = &adapter->port[dev->if_port];
 300         struct net_device_stats *ns = &p->netstats;
 301         const struct cmac_statistics *pstats;
 302
 303         /* Do a full update of the MAC stats */
 304         pstats = p->mac->ops->statistics_update(p->mac,
 305                                                 MAC_STATS_UPDATE_FULL);
 306
 307         ns->tx_packets = pstats->TxUnicastFramesOK +
 308                 pstats->TxMulticastFramesOK + pstats->TxBroadcastFramesOK;
 309
 310         ns->rx_packets = pstats->RxUnicastFramesOK +
 311                 pstats->RxMulticastFramesOK + pstats->RxBroadcastFramesOK;
 312
 313         ns->tx_bytes = pstats->TxOctetsOK;
 314         ns->rx_bytes = pstats->RxOctetsOK;
 315
 316         ns->tx_errors = pstats->TxLateCollisions + pstats->TxLengthErrors +
 317                 pstats->TxUnderrun + pstats->TxFramesAbortedDueToXSCollisions;
 318         ns->rx_errors = pstats->RxDataErrors + pstats->RxJabberErrors +
 319                 pstats->RxFCSErrors + pstats->RxAlignErrors +
 320                 pstats->RxSequenceErrors + pstats->RxFrameTooLongErrors +
 321                 pstats->RxSymbolErrors + pstats->RxRuntErrors;
 322
 323         ns->multicast  = pstats->RxMulticastFramesOK;
 324         ns->collisions = pstats->TxTotalCollisions;
 325
 326         /* detailed rx_errors */
 327         ns->rx_length_errors = pstats->RxFrameTooLongErrors +
 328                 pstats->RxJabberErrors;
 329         ns->rx_over_errors   = 0;
 330         ns->rx_crc_errors    = pstats->RxFCSErrors;
 331         ns->rx_frame_errors  = pstats->RxAlignErrors;
 332         ns->rx_fifo_errors   = 0;
 333         ns->rx_missed_errors = 0;
 334
 335         /* detailed tx_errors */
 336         ns->tx_aborted_errors   = pstats->TxFramesAbortedDueToXSCollisions;
 337         ns->tx_carrier_errors   = 0;
 338         ns->tx_fifo_errors      = pstats->TxUnderrun;
 339         ns->tx_heartbeat_errors = 0;
 340         ns->tx_window_errors    = pstats->TxLateCollisions;
 341         return ns;
 342 }
 343
 344 static u32 get_msglevel(struct net_device *dev)
 345 {
 346         struct adapter *adapter = dev->priv;
 347
 348         return adapter->msg_enable;
 349 }
 350
 351 static void set_msglevel(struct net_device *dev, u32 val)
 352 {
 353         struct adapter *adapter = dev->priv;
 354
 355         adapter->msg_enable = val;
 356 }
 357
 358 static char stats_strings[][ETH_GSTRING_LEN] = {
 359         "TxOctetsOK",
 360         "TxOctetsBad",
 361         "TxUnicastFramesOK",
 362         "TxMulticastFramesOK",
 363         "TxBroadcastFramesOK",
 364         "TxPauseFrames",
 365         "TxFramesWithDeferredXmissions",
 366         "TxLateCollisions",
 367         "TxTotalCollisions",
 368         "TxFramesAbortedDueToXSCollisions",
 369         "TxUnderrun",
 370         "TxLengthErrors",
 371         "TxInternalMACXmitError",
 372         "TxFramesWithExcessiveDeferral",
 373         "TxFCSErrors",
 374
 375         "RxOctetsOK",
 376         "RxOctetsBad",
 377         "RxUnicastFramesOK",
 378         "RxMulticastFramesOK",
 379         "RxBroadcastFramesOK",
 380         "RxPauseFrames",
 381         "RxFCSErrors",
 382         "RxAlignErrors",
 383         "RxSymbolErrors",
 384         "RxDataErrors",
 385         "RxSequenceErrors",
 386         "RxRuntErrors",
 387         "RxJabberErrors",
 388         "RxInternalMACRcvError",
 389         "RxInRangeLengthErrors",
 390         "RxOutOfRangeLengthField",
 391         "RxFrameTooLongErrors",
 392
 393         /* Port stats */
 394         "RxPackets",
 395         "RxCsumGood",
 396         "TxPackets",
 397         "TxCsumOffload",
 398         "TxTso",
 399         "RxVlan",
 400         "TxVlan",
 401
 402         /* Interrupt stats */
 403         "rx drops",
 404         "pure_rsps",
 405         "unhandled irqs",
 406         "respQ_empty",
 407         "respQ_overflow",
 408         "freelistQ_empty",
 409         "pkt_too_big",
 410         "pkt_mismatch",
 411         "cmdQ_full0",
 412         "cmdQ_full1",
 413
 414         "espi_DIP2ParityErr",
 415         "espi_DIP4Err",
 416         "espi_RxDrops",
 417         "espi_TxDrops",
 418         "espi_RxOvfl",
 419         "espi_ParityErr"
 420 };
 421
 422 #define T2_REGMAP_SIZE (3 * 1024)
 423
 424 static int get_regs_len(struct net_device *dev)
 425 {
 426         return T2_REGMAP_SIZE;
 427 }
 428
 429 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
 430 {
 431         struct adapter *adapter = dev->priv;
 432
 433         strcpy(info->driver, DRV_NAME);
 434         strcpy(info->version, DRV_VERSION);
 435         strcpy(info->fw_version, "N/A");
 436         strcpy(info->bus_info, pci_name(adapter->pdev));
 437 }
 438
 439 static int get_stats_count(struct net_device *dev)
 440 {
 441         return ARRAY_SIZE(stats_strings);
 442 }
 443
 444 static void get_strings(struct net_device *dev, u32 stringset, u8 *data)
 445 {
 446         if (stringset == ETH_SS_STATS)
 447                 memcpy(data, stats_strings, sizeof(stats_strings));
 448 }
 449
 450 static void get_stats(struct net_device *dev, struct ethtool_stats *stats,
 451                       u64 *data)
 452 {
 453         struct adapter *adapter = dev->priv;
 454         struct cmac *mac = adapter->port[dev->if_port].mac;
 455         const struct cmac_statistics *s;
 456         const struct sge_intr_counts *t;
 457         struct sge_port_stats ss;
 458
 459         s = mac->ops->statistics_update(mac, MAC_STATS_UPDATE_FULL);
 460
 461         *data++ = s->TxOctetsOK;
 462         *data++ = s->TxOctetsBad;
 463         *data++ = s->TxUnicastFramesOK;
 464         *data++ = s->TxMulticastFramesOK;
 465         *data++ = s->TxBroadcastFramesOK;
 466         *data++ = s->TxPauseFrames;
 467         *data++ = s->TxFramesWithDeferredXmissions;
 468         *data++ = s->TxLateCollisions;
 469         *data++ = s->TxTotalCollisions;
 470         *data++ = s->TxFramesAbortedDueToXSCollisions;
 471         *data++ = s->TxUnderrun;
 472         *data++ = s->TxLengthErrors;
 473         *data++ = s->TxInternalMACXmitError;
 474         *data++ = s->TxFramesWithExcessiveDeferral;
 475         *data++ = s->TxFCSErrors;
 476
 477         *data++ = s->RxOctetsOK;
 478         *data++ = s->RxOctetsBad;
 479         *data++ = s->RxUnicastFramesOK;
 480         *data++ = s->RxMulticastFramesOK;
 481         *data++ = s->RxBroadcastFramesOK;
 482         *data++ = s->RxPauseFrames;
 483         *data++ = s->RxFCSErrors;
 484         *data++ = s->RxAlignErrors;
 485         *data++ = s->RxSymbolErrors;
 486         *data++ = s->RxDataErrors;
 487         *data++ = s->RxSequenceErrors;
 488         *data++ = s->RxRuntErrors;
 489         *data++ = s->RxJabberErrors;
 490         *data++ = s->RxInternalMACRcvError;
 491         *data++ = s->RxInRangeLengthErrors;
 492         *data++ = s->RxOutOfRangeLengthField;
 493         *data++ = s->RxFrameTooLongErrors;
 494
 495         t1_sge_get_port_stats(adapter->sge, dev->if_port, &ss);
 496         *data++ = ss.rx_packets;
 497         *data++ = ss.rx_cso_good;
 498         *data++ = ss.tx_packets;
 499         *data++ = ss.tx_cso;
 500         *data++ = ss.tx_tso;
 501         *data++ = ss.vlan_xtract;
 502         *data++ = ss.vlan_insert;
 503
 504         t = t1_sge_get_intr_counts(adapter->sge);
 505         *data++ = t->rx_drops;
 506         *data++ = t->pure_rsps;
 507         *data++ = t->unhandled_irqs;
 508         *data++ = t->respQ_empty;
 509         *data++ = t->respQ_overflow;
 510         *data++ = t->freelistQ_empty;
 511         *data++ = t->pkt_too_big;
 512         *data++ = t->pkt_mismatch;
 513         *data++ = t->cmdQ_full[0];
 514         *data++ = t->cmdQ_full[1];
 515
 516         if (adapter->espi) {
 517                 const struct espi_intr_counts *e;
 518
 519                 e = t1_espi_get_intr_counts(adapter->espi);
 520                 *data++ = e->DIP2_parity_err;
 521                 *data++ = e->DIP4_err;
 522                 *data++ = e->rx_drops;
 523                 *data++ = e->tx_drops;
 524                 *data++ = e->rx_ovflw;
 525                 *data++ = e->parity_err;
 526         }
 527 }
 528
 529 static inline void reg_block_dump(struct adapter *ap, void *buf,
 530                                   unsigned int start, unsigned int end)
 531 {
 532         u32 *p = buf + start;
 533
 534         for ( ; start <= end; start += sizeof(u32))
 535                 *p++ = readl(ap->regs + start);
 536 }
 537
 538 static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
 539                      void *buf)
 540 {
 541         struct adapter *ap = dev->priv;
 542
 543         /*
 544          * Version scheme: bits 0..9: chip version, bits 10..15: chip revision
 545          */
 546         regs->version = 2;
 547
 548         memset(buf, 0, T2_REGMAP_SIZE);
 549         reg_block_dump(ap, buf, 0, A_SG_RESPACCUTIMER);
 550         reg_block_dump(ap, buf, A_MC3_CFG, A_MC4_INT_CAUSE);
 551         reg_block_dump(ap, buf, A_TPI_ADDR, A_TPI_PAR);
 552         reg_block_dump(ap, buf, A_TP_IN_CONFIG, A_TP_TX_DROP_COUNT);
 553         reg_block_dump(ap, buf, A_RAT_ROUTE_CONTROL, A_RAT_INTR_CAUSE);
 554         reg_block_dump(ap, buf, A_CSPI_RX_AE_WM, A_CSPI_INTR_ENABLE);
 555         reg_block_dump(ap, buf, A_ESPI_SCH_TOKEN0, A_ESPI_GOSTAT);
 556         reg_block_dump(ap, buf, A_ULP_ULIMIT, A_ULP_PIO_CTRL);
 557         reg_block_dump(ap, buf, A_PL_ENABLE, A_PL_CAUSE);
 558         reg_block_dump(ap, buf, A_MC5_CONFIG, A_MC5_MASK_WRITE_CMD);
 559 }
 560
 561 static int get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 562 {
 563         struct adapter *adapter = dev->priv;
 564         struct port_info *p = &adapter->port[dev->if_port];
 565
 566         cmd->supported = p->link_config.supported;
 567         cmd->advertising = p->link_config.advertising;
 568
 569         if (netif_carrier_ok(dev)) {
 570                 cmd->speed = p->link_config.speed;
 571                 cmd->duplex = p->link_config.duplex;
 572         } else {
 573                 cmd->speed = -1;
 574                 cmd->duplex = -1;
 575         }
 576
 577         cmd->port = (cmd->supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE;
 578         cmd->phy_address = p->phy->addr;
 579         cmd->transceiver = XCVR_EXTERNAL;
 580         cmd->autoneg = p->link_config.autoneg;
 581         cmd->maxtxpkt = 0;
 582         cmd->maxrxpkt = 0;
 583         return 0;
 584 }
 585
 586 static int speed_duplex_to_caps(int speed, int duplex)
 587 {
 588         int cap = 0;
 589
 590         switch (speed) {
 591         case SPEED_10:
 592                 if (duplex == DUPLEX_FULL)
 593                         cap = SUPPORTED_10baseT_Full;
 594                 else
 595                         cap = SUPPORTED_10baseT_Half;
 596                 break;
 597         case SPEED_100:
 598                 if (duplex == DUPLEX_FULL)
 599                         cap = SUPPORTED_100baseT_Full;
 600                 else
 601                         cap = SUPPORTED_100baseT_Half;
 602                 break;
 603         case SPEED_1000:
 604                 if (duplex == DUPLEX_FULL)
 605                         cap = SUPPORTED_1000baseT_Full;
 606                 else
 607                         cap = SUPPORTED_1000baseT_Half;
 608                 break;
 609         case SPEED_10000:
 610                 if (duplex == DUPLEX_FULL)
 611                         cap = SUPPORTED_10000baseT_Full;
 612         }
 613         return cap;
 614 }
 615
 616 #define ADVERTISED_MASK (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | \
 617                       ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | \
 618                       ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full | \
 619                       ADVERTISED_10000baseT_Full)
 620
 621 static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 622 {
 623         struct adapter *adapter = dev->priv;
 624         struct port_info *p = &adapter->port[dev->if_port];
 625         struct link_config *lc = &p->link_config;
 626
 627         if (!(lc->supported & SUPPORTED_Autoneg))
 628                 return -EOPNOTSUPP;             /* can't change speed/duplex */
 629
 630         if (cmd->autoneg == AUTONEG_DISABLE) {
 631                 int cap = speed_duplex_to_caps(cmd->speed, cmd->duplex);
 632
 633                 if (!(lc->supported & cap) || cmd->speed == SPEED_1000)
 634                         return -EINVAL;
 635                 lc->requested_speed = cmd->speed;
 636                 lc->requested_duplex = cmd->duplex;
 637                 lc->advertising = 0;
 638         } else {
 639                 cmd->advertising &= ADVERTISED_MASK;
 640                 if (cmd->advertising & (cmd->advertising - 1))
 641                         cmd->advertising = lc->supported;
 642                 cmd->advertising &= lc->supported;
 643                 if (!cmd->advertising)
 644                         return -EINVAL;
 645                 lc->requested_speed = SPEED_INVALID;
 646                 lc->requested_duplex = DUPLEX_INVALID;
 647                 lc->advertising = cmd->advertising | ADVERTISED_Autoneg;
 648         }
 649         lc->autoneg = cmd->autoneg;
 650         if (netif_running(dev))
 651                 t1_link_start(p->phy, p->mac, lc);
 652         return 0;
 653 }
 654
 655 static void get_pauseparam(struct net_device *dev,
 656                            struct ethtool_pauseparam *epause)
 657 {
 658         struct adapter *adapter = dev->priv;
 659         struct port_info *p = &adapter->port[dev->if_port];
 660
 661         epause->autoneg = (p->link_config.requested_fc & PAUSE_AUTONEG) != 0;
 662         epause->rx_pause = (p->link_config.fc & PAUSE_RX) != 0;
 663         epause->tx_pause = (p->link_config.fc & PAUSE_TX) != 0;
 664 }
 665
 666 static int set_pauseparam(struct net_device *dev,
 667                           struct ethtool_pauseparam *epause)
 668 {
 669         struct adapter *adapter = dev->priv;
 670         struct port_info *p = &adapter->port[dev->if_port];
 671         struct link_config *lc = &p->link_config;
 672
 673         if (epause->autoneg == AUTONEG_DISABLE)
 674                 lc->requested_fc = 0;
 675         else if (lc->supported & SUPPORTED_Autoneg)
 676                 lc->requested_fc = PAUSE_AUTONEG;
 677         else
 678                 return -EINVAL;
 679
 680         if (epause->rx_pause)
 681                 lc->requested_fc |= PAUSE_RX;
 682         if (epause->tx_pause)
 683                 lc->requested_fc |= PAUSE_TX;
 684         if (lc->autoneg == AUTONEG_ENABLE) {
 685                 if (netif_running(dev))
 686                         t1_link_start(p->phy, p->mac, lc);
 687         } else {
 688                 lc->fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
 689                 if (netif_running(dev))
 690                         p->mac->ops->set_speed_duplex_fc(p->mac, -1, -1,
 691                                                          lc->fc);
 692         }
 693         return 0;
 694 }
 695
 696 static u32 get_rx_csum(struct net_device *dev)
 697 {
 698         struct adapter *adapter = dev->priv;
 699
 700         return (adapter->flags & RX_CSUM_ENABLED) != 0;
 701 }
 702
 703 static int set_rx_csum(struct net_device *dev, u32 data)
 704 {
 705         struct adapter *adapter = dev->priv;
 706
 707         if (data)
 708                 adapter->flags |= RX_CSUM_ENABLED;
 709         else
 710                 adapter->flags &= ~RX_CSUM_ENABLED;
 711         return 0;
 712 }
 713
 714 static int set_tso(struct net_device *dev, u32 value)
 715 {
 716         struct adapter *adapter = dev->priv;
 717
 718         if (!(adapter->flags & TSO_CAPABLE))
 719                 return value ? -EOPNOTSUPP : 0;
 720         return ethtool_op_set_tso(dev, value);
 721 }
 722
 723 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
 724 {
 725         struct adapter *adapter = dev->priv;
 726         int jumbo_fl = t1_is_T1B(adapter) ? 1 : 0;
 727
 728         e->rx_max_pending = MAX_RX_BUFFERS;
 729         e->rx_mini_max_pending = 0;
 730         e->rx_jumbo_max_pending = MAX_RX_JUMBO_BUFFERS;
 731         e->tx_max_pending = MAX_CMDQ_ENTRIES;
 732
 733         e->rx_pending = adapter->params.sge.freelQ_size[!jumbo_fl];
 734         e->rx_mini_pending = 0;
 735         e->rx_jumbo_pending = adapter->params.sge.freelQ_size[jumbo_fl];
 736         e->tx_pending = adapter->params.sge.cmdQ_size[0];
 737 }
 738
 739 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
 740 {
 741         struct adapter *adapter = dev->priv;
 742         int jumbo_fl = t1_is_T1B(adapter) ? 1 : 0;
 743
 744         if (e->rx_pending > MAX_RX_BUFFERS || e->rx_mini_pending ||
 745             e->rx_jumbo_pending > MAX_RX_JUMBO_BUFFERS ||
 746             e->tx_pending > MAX_CMDQ_ENTRIES ||
 747             e->rx_pending < MIN_FL_ENTRIES ||
 748             e->rx_jumbo_pending < MIN_FL_ENTRIES ||
 749             e->tx_pending < (adapter->params.nports + 1) * (MAX_SKB_FRAGS + 1))
 750                 return -EINVAL;
 751
 752         if (adapter->flags & FULL_INIT_DONE)
 753         return -EBUSY;
 754
 755         adapter->params.sge.freelQ_size[!jumbo_fl] = e->rx_pending;
 756         adapter->params.sge.freelQ_size[jumbo_fl] = e->rx_jumbo_pending;
 757         adapter->params.sge.cmdQ_size[0] = e->tx_pending;
 758         adapter->params.sge.cmdQ_size[1] = e->tx_pending > MAX_CMDQ1_ENTRIES ?
 759                 MAX_CMDQ1_ENTRIES : e->tx_pending;
 760         return 0;
 761 }
 762
 763 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
 764 {
 765         struct adapter *adapter = dev->priv;
 766
 767         /*
 768          * If RX coalescing is requested we use NAPI, otherwise interrupts.
 769          * This choice can be made only when all ports and the TOE are off.
 770          */
 771         if (adapter->open_device_map == 0)
 772                 adapter->params.sge.polling = c->use_adaptive_rx_coalesce;
 773
 774         if (adapter->params.sge.polling) {
 775                 adapter->params.sge.rx_coalesce_usecs = 0;
 776         } else {
 777                 adapter->params.sge.rx_coalesce_usecs = c->rx_coalesce_usecs;
 778         }
 779         adapter->params.sge.coalesce_enable = c->use_adaptive_rx_coalesce;
 780         adapter->params.sge.sample_interval_usecs = c->rate_sample_interval;
 781         t1_sge_set_coalesce_params(adapter->sge, &adapter->params.sge);
 782         return 0;
 783 }
 784
 785 static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
 786 {
 787         struct adapter *adapter = dev->priv;
 788
 789         c->rx_coalesce_usecs = adapter->params.sge.rx_coalesce_usecs;
 790         c->rate_sample_interval = adapter->params.sge.sample_interval_usecs;
 791         c->use_adaptive_rx_coalesce = adapter->params.sge.coalesce_enable;
 792         return 0;
 793 }
 794
 795 static int get_eeprom_len(struct net_device *dev)
 796 {
 797         struct adapter *adapter = dev->priv;
 798
 799         return t1_is_asic(adapter) ? EEPROM_SIZE : 0;
 800 }
 801
 802 #define EEPROM_MAGIC(ap) \
 803         (PCI_VENDOR_ID_CHELSIO | ((ap)->params.chip_version << 16))
 804
 805 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e,
 806                       u8 *data)
 807 {
 808         int i;
 809         u8 buf[EEPROM_SIZE] __attribute__((aligned(4)));
 810         struct adapter *adapter = dev->priv;
 811
 812         e->magic = EEPROM_MAGIC(adapter);
 813         for (i = e->offset & ~3; i < e->offset + e->len; i += sizeof(u32))
 814                 t1_seeprom_read(adapter, i, (u32 *)&buf[i]);
 815         memcpy(data, buf + e->offset, e->len);
 816         return 0;
 817 }
 818
 819 static const struct ethtool_ops t1_ethtool_ops = {
 820         .get_settings      = get_settings,
 821         .set_settings      = set_settings,
 822         .get_drvinfo       = get_drvinfo,
 823         .get_msglevel      = get_msglevel,
 824         .set_msglevel      = set_msglevel,
 825         .get_ringparam     = get_sge_param,
 826         .set_ringparam     = set_sge_param,
 827         .get_coalesce      = get_coalesce,
 828         .set_coalesce      = set_coalesce,
 829         .get_eeprom_len    = get_eeprom_len,
 830         .get_eeprom        = get_eeprom,
 831         .get_pauseparam    = get_pauseparam,
 832         .set_pauseparam    = set_pauseparam,
 833         .get_rx_csum       = get_rx_csum,
 834         .set_rx_csum       = set_rx_csum,
 835         .get_tx_csum       = ethtool_op_get_tx_csum,
 836         .set_tx_csum       = ethtool_op_set_tx_csum,
 837         .get_sg            = ethtool_op_get_sg,
 838         .set_sg            = ethtool_op_set_sg,
 839         .get_link          = ethtool_op_get_link,
 840         .get_strings       = get_strings,
 841         .get_stats_count   = get_stats_count,
 842         .get_ethtool_stats = get_stats,
 843         .get_regs_len      = get_regs_len,
 844         .get_regs          = get_regs,
 845         .get_tso           = ethtool_op_get_tso,
 846         .set_tso           = set_tso,
 847 };
 848
 849 static int t1_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
 850 {
 851         struct adapter *adapter = dev->priv;
 852         struct mii_ioctl_data *data = if_mii(req);
 853
 854         switch (cmd) {
 855         case SIOCGMIIPHY:
 856                 data->phy_id = adapter->port[dev->if_port].phy->addr;
 857                 /* FALLTHRU */
 858         case SIOCGMIIREG: {
 859                 struct cphy *phy = adapter->port[dev->if_port].phy;
 860                 u32 val;
 861
 862                 if (!phy->mdio_read)
 863             return -EOPNOTSUPP;
 864                 phy->mdio_read(adapter, data->phy_id, 0, data->reg_num & 0x1f,
 865                                &val);
 866                 data->val_out = val;
 867                 break;
 868         }
 869         case SIOCSMIIREG: {
 870                 struct cphy *phy = adapter->port[dev->if_port].phy;
 871
 872                 if (!capable(CAP_NET_ADMIN))
 873                     return -EPERM;
 874                 if (!phy->mdio_write)
 875             return -EOPNOTSUPP;
 876                 phy->mdio_write(adapter, data->phy_id, 0, data->reg_num & 0x1f,
 877                                 data->val_in);
 878                 break;
 879         }
 880
 881         default:
 882                 return -EOPNOTSUPP;
 883         }
 884         return 0;
 885 }
 886
 887 static int t1_change_mtu(struct net_device *dev, int new_mtu)
 888 {
 889         int ret;
 890         struct adapter *adapter = dev->priv;
 891         struct cmac *mac = adapter->port[dev->if_port].mac;
 892
 893         if (!mac->ops->set_mtu)
 894         return -EOPNOTSUPP;
 895         if (new_mtu < 68)
 896         return -EINVAL;
 897         if ((ret = mac->ops->set_mtu(mac, new_mtu)))
 898                 return ret;
 899         dev->mtu = new_mtu;
 900         return 0;
 901 }
 902
 903 static int t1_set_mac_addr(struct net_device *dev, void *p)
 904 {
 905         struct adapter *adapter = dev->priv;
 906         struct cmac *mac = adapter->port[dev->if_port].mac;
 907         struct sockaddr *addr = p;
 908
 909         if (!mac->ops->macaddress_set)
 910                 return -EOPNOTSUPP;
 911
 912         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 913         mac->ops->macaddress_set(mac, dev->dev_addr);
 914         return 0;
 915 }
 916
 917 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
 918 static void vlan_rx_register(struct net_device *dev,
 919                                    struct vlan_group *grp)
 920 {
 921         struct adapter *adapter = dev->priv;
 922
 923         spin_lock_irq(&adapter->async_lock);
 924         adapter->vlan_grp = grp;
 925         t1_set_vlan_accel(adapter, grp != NULL);
 926         spin_unlock_irq(&adapter->async_lock);
 927 }
 928
 929 static void vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
 930 {
 931         struct adapter *adapter = dev->priv;
 932
 933         spin_lock_irq(&adapter->async_lock);
 934         if (adapter->vlan_grp)
 935                 adapter->vlan_grp->vlan_devices[vid] = NULL;
 936         spin_unlock_irq(&adapter->async_lock);
 937 }
 938 #endif
 939
 940 #ifdef CONFIG_NET_POLL_CONTROLLER
 941 static void t1_netpoll(struct net_device *dev)
 942 {
 943         unsigned long flags;
 944         struct adapter *adapter = dev->priv;
 945
 946         local_irq_save(flags);
 947         t1_select_intr_handler(adapter)(adapter->pdev->irq, adapter);
 948         local_irq_restore(flags);
 949 }
 950 #endif
 951
 952 /*
 953  * Periodic accumulation of MAC statistics.  This is used only if the MAC
 954  * does not have any other way to prevent stats counter overflow.
 955  */
 956 static void mac_stats_task(void *data)
 957 {
 958         int i;
 959         struct adapter *adapter = data;
 960
 961         for_each_port(adapter, i) {
 962                 struct port_info *p = &adapter->port[i];
 963
 964                 if (netif_running(p->dev))
 965                         p->mac->ops->statistics_update(p->mac,
 966                                                        MAC_STATS_UPDATE_FAST);
 967         }
 968
 969         /* Schedule the next statistics update if any port is active. */
 970         spin_lock(&adapter->work_lock);
 971         if (adapter->open_device_map & PORT_MASK)
 972                 schedule_mac_stats_update(adapter,
 973                                           adapter->params.stats_update_period);
 974         spin_unlock(&adapter->work_lock);
 975 }
 976
 977 /*
 978  * Processes elmer0 external interrupts in process context.
 979  */
 980 static void ext_intr_task(void *data)
 981 {
 982         struct adapter *adapter = data;
 983
 984         t1_elmer0_ext_intr_handler(adapter);
 985
 986         /* Now reenable external interrupts */
 987         spin_lock_irq(&adapter->async_lock);
 988         adapter->slow_intr_mask |= F_PL_INTR_EXT;
 989         writel(F_PL_INTR_EXT, adapter->regs + A_PL_CAUSE);
 990         writel(adapter->slow_intr_mask | F_PL_INTR_SGE_DATA,
 991                    adapter->regs + A_PL_ENABLE);
 992         spin_unlock_irq(&adapter->async_lock);
 993 }
 994
 995 /*
 996  * Interrupt-context handler for elmer0 external interrupts.
 997  */
 998 void t1_elmer0_ext_intr(struct adapter *adapter)
 999 {
1000         /*
1001          * Schedule a task to handle external interrupts as we require
1002          * a process context.  We disable EXT interrupts in the interim
1003          * and let the task reenable them when it's done.
1004          */
1005         adapter->slow_intr_mask &= ~F_PL_INTR_EXT;
1006         writel(adapter->slow_intr_mask | F_PL_INTR_SGE_DATA,
1007                    adapter->regs + A_PL_ENABLE);
1008         schedule_work(&adapter->ext_intr_handler_task);
1009 }
1010
1011 void t1_fatal_err(struct adapter *adapter)
1012 {
1013         if (adapter->flags & FULL_INIT_DONE) {
1014                 t1_sge_stop(adapter->sge);
1015                 t1_interrupts_disable(adapter);
1016         }
1017         CH_ALERT("%s: encountered fatal error, operation suspended\n",
1018                  adapter->name);
1019 }
1020
1021 static int __devinit init_one(struct pci_dev *pdev,
1022                               const struct pci_device_id *ent)
1023 {
1024         static int version_printed;
1025
1026         int i, err, pci_using_dac = 0;
1027         unsigned long mmio_start, mmio_len;
1028         const struct board_info *bi;
1029         struct adapter *adapter = NULL;
1030         struct port_info *pi;
1031
1032         if (!version_printed) {
1033                 printk(KERN_INFO "%s - version %s\n", DRV_DESCRIPTION,
1034                        DRV_VERSION);
1035                 ++version_printed;
1036         }
1037
1038         err = pci_enable_device(pdev);
1039         if (err)
1040                 return err;
1041
1042         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1043                 CH_ERR("%s: cannot find PCI device memory base address\n",
1044                        pci_name(pdev));
1045                 err = -ENODEV;
1046                 goto out_disable_pdev;
1047         }
1048
1049         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1050                 pci_using_dac = 1;
1051
1052                 if (pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) {
1053                         CH_ERR("%s: unable to obtain 64-bit DMA for"
1054                                "consistent allocations\n", pci_name(pdev));
1055                         err = -ENODEV;
1056                         goto out_disable_pdev;
1057                 }
1058
1059         } else if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) != 0) {
1060                 CH_ERR("%s: no usable DMA configuration\n", pci_name(pdev));
1061                 goto out_disable_pdev;
1062         }
1063
1064         err = pci_request_regions(pdev, DRV_NAME);
1065         if (err) {
1066                 CH_ERR("%s: cannot obtain PCI resources\n", pci_name(pdev));
1067                 goto out_disable_pdev;
1068         }
1069
1070         pci_set_master(pdev);
1071
1072         mmio_start = pci_resource_start(pdev, 0);
1073         mmio_len = pci_resource_len(pdev, 0);
1074         bi = t1_get_board_info(ent->driver_data);
1075
1076         for (i = 0; i < bi->port_number; ++i) {
1077                 struct net_device *netdev;
1078
1079                 netdev = alloc_etherdev(adapter ? 0 : sizeof(*adapter));
1080                 if (!netdev) {
1081                         err = -ENOMEM;
1082                         goto out_free_dev;
1083                 }
1084
1085                 SET_MODULE_OWNER(netdev);
1086                 SET_NETDEV_DEV(netdev, &pdev->dev);
1087
1088                 if (!adapter) {
1089                         adapter = netdev->priv;
1090                         adapter->pdev = pdev;
1091                         adapter->port[0].dev = netdev;  /* so we don't leak it */
1092
1093                         adapter->regs = ioremap(mmio_start, mmio_len);
1094                         if (!adapter->regs) {
1095                                 CH_ERR("%s: cannot map device registers\n",
1096                                        pci_name(pdev));
1097                                 err = -ENOMEM;
1098                                 goto out_free_dev;
1099                         }
1100
1101                         if (t1_get_board_rev(adapter, bi, &adapter->params)) {
1102                                 err = -ENODEV;    /* Can't handle this chip rev */
1103                                 goto out_free_dev;
1104                         }
1105
1106                         adapter->name = pci_name(pdev);
1107                         adapter->msg_enable = dflt_msg_enable;
1108                         adapter->mmio_len = mmio_len;
1109
1110                         spin_lock_init(&adapter->tpi_lock);
1111                         spin_lock_init(&adapter->work_lock);
1112                         spin_lock_init(&adapter->async_lock);
1113                         spin_lock_init(&adapter->mac_lock);
1114
1115                         INIT_WORK(&adapter->ext_intr_handler_task,
1116                                   ext_intr_task, adapter);
1117                         INIT_WORK(&adapter->stats_update_task, mac_stats_task,
1118                                   adapter);
1119
1120                         pci_set_drvdata(pdev, netdev);
1121                 }
1122
1123                 pi = &adapter->port[i];
1124                 pi->dev = netdev;
1125                 netif_carrier_off(netdev);
1126                 netdev->irq = pdev->irq;
1127                 netdev->if_port = i;
1128                 netdev->mem_start = mmio_start;
1129                 netdev->mem_end = mmio_start + mmio_len - 1;
1130                 netdev->priv = adapter;
1131                 netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
1132                 netdev->features |= NETIF_F_LLTX;
1133
1134                 adapter->flags |= RX_CSUM_ENABLED | TCP_CSUM_CAPABLE;
1135                 if (pci_using_dac)
1136                         netdev->features |= NETIF_F_HIGHDMA;
1137                 if (vlan_tso_capable(adapter)) {
1138 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1139                         adapter->flags |= VLAN_ACCEL_CAPABLE;
1140                         netdev->features |=
1141                                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1142                         netdev->vlan_rx_register = vlan_rx_register;
1143                         netdev->vlan_rx_kill_vid = vlan_rx_kill_vid;
1144 #endif
1145
1146                         /* T204: disable TSO */
1147                         if (!(is_T2(adapter)) || bi->port_number != 4) {
1148                                 adapter->flags |= TSO_CAPABLE;
1149                                 netdev->features |= NETIF_F_TSO;
1150                         }
1151                 }
1152
1153                 netdev->open = cxgb_open;
1154                 netdev->stop = cxgb_close;
1155                 netdev->hard_start_xmit = t1_start_xmit;
1156                 netdev->hard_header_len += (adapter->flags & TSO_CAPABLE) ?
1157                         sizeof(struct cpl_tx_pkt_lso) : sizeof(struct cpl_tx_pkt);
1158                 netdev->get_stats = t1_get_stats;
1159                 netdev->set_multicast_list = t1_set_rxmode;
1160                 netdev->do_ioctl = t1_ioctl;
1161                 netdev->change_mtu = t1_change_mtu;
1162                 netdev->set_mac_address = t1_set_mac_addr;
1163 #ifdef CONFIG_NET_POLL_CONTROLLER
1164                 netdev->poll_controller = t1_netpoll;
1165 #endif
1166                 netdev->weight = 64;
1167
1168                 SET_ETHTOOL_OPS(netdev, &t1_ethtool_ops);
1169         }
1170
1171         if (t1_init_sw_modules(adapter, bi) < 0) {
1172                 err = -ENODEV;
1173                 goto out_free_dev;
1174         }
1175
1176         /*
1177          * The card is now ready to go.  If any errors occur during device
1178          * registration we do not fail the whole card but rather proceed only
1179          * with the ports we manage to register successfully.  However we must
1180          * register at least one net device.
1181          */
1182         for (i = 0; i < bi->port_number; ++i) {
1183                 err = register_netdev(adapter->port[i].dev);
1184                 if (err)
1185                         CH_WARN("%s: cannot register net device %s, skipping\n",
1186                                 pci_name(pdev), adapter->port[i].dev->name);
1187                 else {
1188                         /*
1189                          * Change the name we use for messages to the name of
1190                          * the first successfully registered interface.
1191                          */
1192                         if (!adapter->registered_device_map)
1193                                 adapter->name = adapter->port[i].dev->name;
1194
1195                         __set_bit(i, &adapter->registered_device_map);
1196                 }
1197         }
1198         if (!adapter->registered_device_map) {
1199                 CH_ERR("%s: could not register any net devices\n",
1200                        pci_name(pdev));
1201                 goto out_release_adapter_res;
1202         }
1203
1204         printk(KERN_INFO "%s: %s (rev %d), %s %dMHz/%d-bit\n", adapter->name,
1205                bi->desc, adapter->params.chip_revision,
1206                adapter->params.pci.is_pcix ? "PCIX" : "PCI",
1207                adapter->params.pci.speed, adapter->params.pci.width);
1208
1209         /*
1210          * Set the T1B ASIC and memory clocks.
1211          */
1212         if (t1powersave)
1213                 adapter->t1powersave = LCLOCK;  /* HW default is powersave mode. */
1214         else
1215                 adapter->t1powersave = HCLOCK;
1216         if (t1_is_T1B(adapter))
1217                 t1_clock(adapter, t1powersave);
1218
1219         return 0;
1220
1221  out_release_adapter_res:
1222         t1_free_sw_modules(adapter);
1223  out_free_dev:
1224         if (adapter) {
1225                 if (adapter->regs)
1226                         iounmap(adapter->regs);
1227                 for (i = bi->port_number - 1; i >= 0; --i)
1228                         if (adapter->port[i].dev)
1229                                 free_netdev(adapter->port[i].dev);
1230         }
1231         pci_release_regions(pdev);
1232  out_disable_pdev:
1233         pci_disable_device(pdev);
1234         pci_set_drvdata(pdev, NULL);
1235         return err;
1236 }
1237
1238 static void bit_bang(struct adapter *adapter, int bitdata, int nbits)
1239 {
1240         int data;
1241         int i;
1242         u32 val;
1243
1244         enum {
1245                 S_CLOCK = 1 << 3,
1246                 S_DATA = 1 << 4
1247         };
1248
1249         for (i = (nbits - 1); i > -1; i--) {
1250
1251                 udelay(50);
1252
1253                 data = ((bitdata >> i) & 0x1);
1254                 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1255
1256                 if (data)
1257                         val |= S_DATA;
1258                 else
1259                         val &= ~S_DATA;
1260
1261                 udelay(50);
1262
1263                 /* Set SCLOCK low */
1264                 val &= ~S_CLOCK;
1265                 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1266
1267                 udelay(50);
1268
1269                 /* Write SCLOCK high */
1270                 val |= S_CLOCK;
1271                 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1272
1273         }
1274 }
1275
1276 static int t1_clock(struct adapter *adapter, int mode)
1277 {
1278         u32 val;
1279         int M_CORE_VAL;
1280         int M_MEM_VAL;
1281
1282         enum {
1283                 M_CORE_BITS = 9,
1284                 T_CORE_VAL = 0,
1285                 T_CORE_BITS = 2,
1286                 N_CORE_VAL = 0,
1287                 N_CORE_BITS = 2,
1288                 M_MEM_BITS = 9,
1289                 T_MEM_VAL = 0,
1290                 T_MEM_BITS = 2,
1291                 N_MEM_VAL = 0,
1292                 N_MEM_BITS = 2,
1293                 NP_LOAD = 1 << 17,
1294                 S_LOAD_MEM = 1 << 5,
1295                 S_LOAD_CORE = 1 << 6,
1296                 S_CLOCK = 1 << 3
1297         };
1298
1299         if (!t1_is_T1B(adapter))
1300                 return -ENODEV; /* Can't re-clock this chip. */
1301
1302         if (mode & 2) {
1303                 return 0;       /* show current mode. */
1304         }
1305
1306         if ((adapter->t1powersave & 1) == (mode & 1))
1307                 return -EALREADY;       /* ASIC already running in mode. */
1308
1309         if ((mode & 1) == HCLOCK) {
1310                 M_CORE_VAL = 0x14;
1311                 M_MEM_VAL = 0x18;
1312                 adapter->t1powersave = HCLOCK;  /* overclock */
1313         } else {
1314                 M_CORE_VAL = 0xe;
1315                 M_MEM_VAL = 0x10;
1316                 adapter->t1powersave = LCLOCK;  /* underclock */
1317         }
1318
1319         /* Don't interrupt this serial stream! */
1320         spin_lock(&adapter->tpi_lock);
1321
1322         /* Initialize for ASIC core */
1323         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1324         val |= NP_LOAD;
1325         udelay(50);
1326         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1327         udelay(50);
1328         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1329         val &= ~S_LOAD_CORE;
1330         val &= ~S_CLOCK;
1331         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1332         udelay(50);
1333
1334         /* Serial program the ASIC clock synthesizer */
1335         bit_bang(adapter, T_CORE_VAL, T_CORE_BITS);
1336         bit_bang(adapter, N_CORE_VAL, N_CORE_BITS);
1337         bit_bang(adapter, M_CORE_VAL, M_CORE_BITS);
1338         udelay(50);
1339
1340         /* Finish ASIC core */
1341         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1342         val |= S_LOAD_CORE;
1343         udelay(50);
1344         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1345         udelay(50);
1346         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1347         val &= ~S_LOAD_CORE;
1348         udelay(50);
1349         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1350         udelay(50);
1351
1352         /* Initialize for memory */
1353         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1354         val |= NP_LOAD;
1355         udelay(50);
1356         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1357         udelay(50);
1358         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1359         val &= ~S_LOAD_MEM;
1360         val &= ~S_CLOCK;
1361         udelay(50);
1362         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1363         udelay(50);
1364
1365         /* Serial program the memory clock synthesizer */
1366         bit_bang(adapter, T_MEM_VAL, T_MEM_BITS);
1367         bit_bang(adapter, N_MEM_VAL, N_MEM_BITS);
1368         bit_bang(adapter, M_MEM_VAL, M_MEM_BITS);
1369         udelay(50);
1370
1371         /* Finish memory */
1372         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1373         val |= S_LOAD_MEM;
1374         udelay(50);
1375         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1376         udelay(50);
1377         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1378         val &= ~S_LOAD_MEM;
1379         udelay(50);
1380         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1381
1382         spin_unlock(&adapter->tpi_lock);
1383
1384         return 0;
1385 }
1386
1387 static inline void t1_sw_reset(struct pci_dev *pdev)
1388 {
1389         pci_write_config_dword(pdev, A_PCICFG_PM_CSR, 3);
1390         pci_write_config_dword(pdev, A_PCICFG_PM_CSR, 0);
1391 }
1392
1393 static void __devexit remove_one(struct pci_dev *pdev)
1394 {
1395         struct net_device *dev = pci_get_drvdata(pdev);
1396
1397         if (dev) {
1398                 int i;
1399                 struct adapter *adapter = dev->priv;
1400
1401                 for_each_port(adapter, i)
1402                         if (test_bit(i, &adapter->registered_device_map))
1403                                 unregister_netdev(adapter->port[i].dev);
1404
1405                 t1_free_sw_modules(adapter);
1406                 iounmap(adapter->regs);
1407                 while (--i >= 0)
1408                         if (adapter->port[i].dev)
1409                                 free_netdev(adapter->port[i].dev);
1410
1411                 pci_release_regions(pdev);
1412                 pci_disable_device(pdev);
1413                 pci_set_drvdata(pdev, NULL);
1414                 t1_sw_reset(pdev);
1415         }
1416 }
1417
1418 static struct pci_driver driver = {
1419         .name     = DRV_NAME,
1420         .id_table = t1_pci_tbl,
1421         .probe    = init_one,
1422         .remove   = __devexit_p(remove_one),
1423 };
1424
1425 static int __init t1_init_module(void)
1426 {
1427         return pci_register_driver(&driver);
1428 }
1429
1430 static void __exit t1_cleanup_module(void)
1431 {
1432         pci_unregister_driver(&driver);
1433 }
1434
1435 module_init(t1_init_module);
1436 module_exit(t1_cleanup_module);