drivers/net/ethernet/chelsio/cxgb/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, see <http://www.gnu.org/licenses/>.            *
  15  *                                                                           *
  16  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED    *
  17  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF      *
  18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.                     *
  19  *                                                                           *
  20  * http://www.chelsio.com                                                    *
  21  *                                                                           *
  22  * Copyright (c) 2003 - 2005 Chelsio Communications, Inc.                    *
  23  * All rights reserved.                                                      *
  24  *                                                                           *
  25  * Maintainers: maintainers@chelsio.com                                      *
  26  *                                                                           *
  27  * Authors: Dimitrios Michailidis   <dm@chelsio.com>                         *
  28  *          Tina Yang               <tainay@chelsio.com>                     *
  29  *          Felix Marti             <felix@chelsio.com>                      *
  30  *          Scott Bardone           <sbardone@chelsio.com>                   *
  31  *          Kurt Ottaway            <kottaway@chelsio.com>                   *
  32  *          Frank DiMambro          <frank@chelsio.com>                      *
  33  *                                                                           *
  34  * History:                                                                  *
  35  *                                                                           *
  36  ****************************************************************************/
  37
  38 #include "common.h"
  39 #include <linux/module.h>
  40 #include <linux/pci.h>
  41 #include <linux/netdevice.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/if_vlan.h>
  44 #include <linux/mii.h>
  45 #include <linux/sockios.h>
  46 #include <linux/dma-mapping.h>
  47 #include <linux/uaccess.h>
  48
  49 #include "cpl5_cmd.h"
  50 #include "regs.h"
  51 #include "gmac.h"
  52 #include "cphy.h"
  53 #include "sge.h"
  54 #include "tp.h"
  55 #include "espi.h"
  56 #include "elmer0.h"
  57
  58 #include <linux/workqueue.h>
  59
  60 static inline void schedule_mac_stats_update(struct adapter *ap, int secs)
  61 {
  62         schedule_delayed_work(&ap->stats_update_task, secs * HZ);
  63 }
  64
  65 static inline void cancel_mac_stats_update(struct adapter *ap)
  66 {
  67         cancel_delayed_work(&ap->stats_update_task);
  68 }
  69
  70 #define MAX_CMDQ_ENTRIES        16384
  71 #define MAX_CMDQ1_ENTRIES       1024
  72 #define MAX_RX_BUFFERS          16384
  73 #define MAX_RX_JUMBO_BUFFERS    16384
  74 #define MAX_TX_BUFFERS_HIGH     16384U
  75 #define MAX_TX_BUFFERS_LOW      1536U
  76 #define MAX_TX_BUFFERS          1460U
  77 #define MIN_FL_ENTRIES          32
  78
  79 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
  80                          NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
  81                          NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
  82
  83 /*
  84  * The EEPROM is actually bigger but only the first few bytes are used so we
  85  * only report those.
  86  */
  87 #define EEPROM_SIZE 32
  88
  89 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  90 MODULE_AUTHOR("Chelsio Communications");
  91 MODULE_LICENSE("GPL");
  92
  93 static int dflt_msg_enable = DFLT_MSG_ENABLE;
  94
  95 module_param(dflt_msg_enable, int, 0);
  96 MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T1 default message enable bitmap");
  97
  98 #define HCLOCK 0x0
  99 #define LCLOCK 0x1
 100
 101 /* T1 cards powersave mode */
 102 static int t1_clock(struct adapter *adapter, int mode);
 103 static int t1powersave = 1;     /* HW default is powersave mode. */
 104
 105 module_param(t1powersave, int, 0);
 106 MODULE_PARM_DESC(t1powersave, "Enable/Disable T1 powersaving mode");
 107
 108 static int disable_msi = 0;
 109 module_param(disable_msi, int, 0);
 110 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
 111
 112 /*
 113  * Setup MAC to receive the types of packets we want.
 114  */
 115 static void t1_set_rxmode(struct net_device *dev)
 116 {
 117         struct adapter *adapter = dev->ml_priv;
 118         struct cmac *mac = adapter->port[dev->if_port].mac;
 119         struct t1_rx_mode rm;
 120
 121         rm.dev = dev;
 122         mac->ops->set_rx_mode(mac, &rm);
 123 }
 124
 125 static void link_report(struct port_info *p)
 126 {
 127         if (!netif_carrier_ok(p->dev))
 128                 netdev_info(p->dev, "link down\n");
 129         else {
 130                 const char *s = "10Mbps";
 131
 132                 switch (p->link_config.speed) {
 133                         case SPEED_10000: s = "10Gbps"; break;
 134                         case SPEED_1000:  s = "1000Mbps"; break;
 135                         case SPEED_100:   s = "100Mbps"; break;
 136                 }
 137
 138                 netdev_info(p->dev, "link up, %s, %s-duplex\n",
 139                             s, p->link_config.duplex == DUPLEX_FULL
 140                             ? "full" : "half");
 141         }
 142 }
 143
 144 void t1_link_negotiated(struct adapter *adapter, int port_id, int link_stat,
 145                         int speed, int duplex, int pause)
 146 {
 147         struct port_info *p = &adapter->port[port_id];
 148
 149         if (link_stat != netif_carrier_ok(p->dev)) {
 150                 if (link_stat)
 151                         netif_carrier_on(p->dev);
 152                 else
 153                         netif_carrier_off(p->dev);
 154                 link_report(p);
 155
 156                 /* multi-ports: inform toe */
 157                 if ((speed > 0) && (adapter->params.nports > 1)) {
 158                         unsigned int sched_speed = 10;
 159                         switch (speed) {
 160                         case SPEED_1000:
 161                                 sched_speed = 1000;
 162                                 break;
 163                         case SPEED_100:
 164                                 sched_speed = 100;
 165                                 break;
 166                         case SPEED_10:
 167                                 sched_speed = 10;
 168                                 break;
 169                         }
 170                         t1_sched_update_parms(adapter->sge, port_id, 0, sched_speed);
 171                 }
 172         }
 173 }
 174
 175 static void link_start(struct port_info *p)
 176 {
 177         struct cmac *mac = p->mac;
 178
 179         mac->ops->reset(mac);
 180         if (mac->ops->macaddress_set)
 181                 mac->ops->macaddress_set(mac, p->dev->dev_addr);
 182         t1_set_rxmode(p->dev);
 183         t1_link_start(p->phy, mac, &p->link_config);
 184         mac->ops->enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
 185 }
 186
 187 static void enable_hw_csum(struct adapter *adapter)
 188 {
 189         if (adapter->port[0].dev->hw_features & NETIF_F_TSO)
 190                 t1_tp_set_ip_checksum_offload(adapter->tp, 1);  /* for TSO only */
 191         t1_tp_set_tcp_checksum_offload(adapter->tp, 1);
 192 }
 193
 194 /*
 195  * Things to do upon first use of a card.
 196  * This must run with the rtnl lock held.
 197  */
 198 static int cxgb_up(struct adapter *adapter)
 199 {
 200         int err = 0;
 201
 202         if (!(adapter->flags & FULL_INIT_DONE)) {
 203                 err = t1_init_hw_modules(adapter);
 204                 if (err)
 205                         goto out_err;
 206
 207                 enable_hw_csum(adapter);
 208                 adapter->flags |= FULL_INIT_DONE;
 209         }
 210
 211         t1_interrupts_clear(adapter);
 212
 213         adapter->params.has_msi = !disable_msi && !pci_enable_msi(adapter->pdev);
 214         err = request_threaded_irq(adapter->pdev->irq, t1_interrupt,
 215                                    t1_interrupt_thread,
 216                                    adapter->params.has_msi ? 0 : IRQF_SHARED,
 217                                    adapter->name, adapter);
 218         if (err) {
 219                 if (adapter->params.has_msi)
 220                         pci_disable_msi(adapter->pdev);
 221
 222                 goto out_err;
 223         }
 224
 225         t1_sge_start(adapter->sge);
 226         t1_interrupts_enable(adapter);
 227 out_err:
 228         return err;
 229 }
 230
 231 /*
 232  * Release resources when all the ports have been stopped.
 233  */
 234 static void cxgb_down(struct adapter *adapter)
 235 {
 236         t1_sge_stop(adapter->sge);
 237         t1_interrupts_disable(adapter);
 238         free_irq(adapter->pdev->irq, adapter);
 239         if (adapter->params.has_msi)
 240                 pci_disable_msi(adapter->pdev);
 241 }
 242
 243 static int cxgb_open(struct net_device *dev)
 244 {
 245         int err;
 246         struct adapter *adapter = dev->ml_priv;
 247         int other_ports = adapter->open_device_map & PORT_MASK;
 248
 249         napi_enable(&adapter->napi);
 250         if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0) {
 251                 napi_disable(&adapter->napi);
 252                 return err;
 253         }
 254
 255         __set_bit(dev->if_port, &adapter->open_device_map);
 256         link_start(&adapter->port[dev->if_port]);
 257         netif_start_queue(dev);
 258         if (!other_ports && adapter->params.stats_update_period)
 259                 schedule_mac_stats_update(adapter,
 260                                           adapter->params.stats_update_period);
 261
 262         t1_vlan_mode(adapter, dev->features);
 263         return 0;
 264 }
 265
 266 static int cxgb_close(struct net_device *dev)
 267 {
 268         struct adapter *adapter = dev->ml_priv;
 269         struct port_info *p = &adapter->port[dev->if_port];
 270         struct cmac *mac = p->mac;
 271
 272         netif_stop_queue(dev);
 273         napi_disable(&adapter->napi);
 274         mac->ops->disable(mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX);
 275         netif_carrier_off(dev);
 276
 277         clear_bit(dev->if_port, &adapter->open_device_map);
 278         if (adapter->params.stats_update_period &&
 279             !(adapter->open_device_map & PORT_MASK)) {
 280                 /* Stop statistics accumulation. */
 281                 smp_mb__after_atomic();
 282                 spin_lock(&adapter->work_lock);   /* sync with update task */
 283                 spin_unlock(&adapter->work_lock);
 284                 cancel_mac_stats_update(adapter);
 285         }
 286
 287         if (!adapter->open_device_map)
 288                 cxgb_down(adapter);
 289         return 0;
 290 }
 291
 292 static struct net_device_stats *t1_get_stats(struct net_device *dev)
 293 {
 294         struct adapter *adapter = dev->ml_priv;
 295         struct port_info *p = &adapter->port[dev->if_port];
 296         struct net_device_stats *ns = &dev->stats;
 297         const struct cmac_statistics *pstats;
 298
 299         /* Do a full update of the MAC stats */
 300         pstats = p->mac->ops->statistics_update(p->mac,
 301                                                 MAC_STATS_UPDATE_FULL);
 302
 303         ns->tx_packets = pstats->TxUnicastFramesOK +
 304                 pstats->TxMulticastFramesOK + pstats->TxBroadcastFramesOK;
 305
 306         ns->rx_packets = pstats->RxUnicastFramesOK +
 307                 pstats->RxMulticastFramesOK + pstats->RxBroadcastFramesOK;
 308
 309         ns->tx_bytes = pstats->TxOctetsOK;
 310         ns->rx_bytes = pstats->RxOctetsOK;
 311
 312         ns->tx_errors = pstats->TxLateCollisions + pstats->TxLengthErrors +
 313                 pstats->TxUnderrun + pstats->TxFramesAbortedDueToXSCollisions;
 314         ns->rx_errors = pstats->RxDataErrors + pstats->RxJabberErrors +
 315                 pstats->RxFCSErrors + pstats->RxAlignErrors +
 316                 pstats->RxSequenceErrors + pstats->RxFrameTooLongErrors +
 317                 pstats->RxSymbolErrors + pstats->RxRuntErrors;
 318
 319         ns->multicast  = pstats->RxMulticastFramesOK;
 320         ns->collisions = pstats->TxTotalCollisions;
 321
 322         /* detailed rx_errors */
 323         ns->rx_length_errors = pstats->RxFrameTooLongErrors +
 324                 pstats->RxJabberErrors;
 325         ns->rx_over_errors   = 0;
 326         ns->rx_crc_errors    = pstats->RxFCSErrors;
 327         ns->rx_frame_errors  = pstats->RxAlignErrors;
 328         ns->rx_fifo_errors   = 0;
 329         ns->rx_missed_errors = 0;
 330
 331         /* detailed tx_errors */
 332         ns->tx_aborted_errors   = pstats->TxFramesAbortedDueToXSCollisions;
 333         ns->tx_carrier_errors   = 0;
 334         ns->tx_fifo_errors      = pstats->TxUnderrun;
 335         ns->tx_heartbeat_errors = 0;
 336         ns->tx_window_errors    = pstats->TxLateCollisions;
 337         return ns;
 338 }
 339
 340 static u32 get_msglevel(struct net_device *dev)
 341 {
 342         struct adapter *adapter = dev->ml_priv;
 343
 344         return adapter->msg_enable;
 345 }
 346
 347 static void set_msglevel(struct net_device *dev, u32 val)
 348 {
 349         struct adapter *adapter = dev->ml_priv;
 350
 351         adapter->msg_enable = val;
 352 }
 353
 354 static const char stats_strings[][ETH_GSTRING_LEN] = {
 355         "TxOctetsOK",
 356         "TxOctetsBad",
 357         "TxUnicastFramesOK",
 358         "TxMulticastFramesOK",
 359         "TxBroadcastFramesOK",
 360         "TxPauseFrames",
 361         "TxFramesWithDeferredXmissions",
 362         "TxLateCollisions",
 363         "TxTotalCollisions",
 364         "TxFramesAbortedDueToXSCollisions",
 365         "TxUnderrun",
 366         "TxLengthErrors",
 367         "TxInternalMACXmitError",
 368         "TxFramesWithExcessiveDeferral",
 369         "TxFCSErrors",
 370         "TxJumboFramesOk",
 371         "TxJumboOctetsOk",
 372
 373         "RxOctetsOK",
 374         "RxOctetsBad",
 375         "RxUnicastFramesOK",
 376         "RxMulticastFramesOK",
 377         "RxBroadcastFramesOK",
 378         "RxPauseFrames",
 379         "RxFCSErrors",
 380         "RxAlignErrors",
 381         "RxSymbolErrors",
 382         "RxDataErrors",
 383         "RxSequenceErrors",
 384         "RxRuntErrors",
 385         "RxJabberErrors",
 386         "RxInternalMACRcvError",
 387         "RxInRangeLengthErrors",
 388         "RxOutOfRangeLengthField",
 389         "RxFrameTooLongErrors",
 390         "RxJumboFramesOk",
 391         "RxJumboOctetsOk",
 392
 393         /* Port stats */
 394         "RxCsumGood",
 395         "TxCsumOffload",
 396         "TxTso",
 397         "RxVlan",
 398         "TxVlan",
 399         "TxNeedHeadroom",
 400
 401         /* Interrupt stats */
 402         "rx drops",
 403         "pure_rsps",
 404         "unhandled irqs",
 405         "respQ_empty",
 406         "respQ_overflow",
 407         "freelistQ_empty",
 408         "pkt_too_big",
 409         "pkt_mismatch",
 410         "cmdQ_full0",
 411         "cmdQ_full1",
 412
 413         "espi_DIP2ParityErr",
 414         "espi_DIP4Err",
 415         "espi_RxDrops",
 416         "espi_TxDrops",
 417         "espi_RxOvfl",
 418         "espi_ParityErr"
 419 };
 420
 421 #define T2_REGMAP_SIZE (3 * 1024)
 422
 423 static int get_regs_len(struct net_device *dev)
 424 {
 425         return T2_REGMAP_SIZE;
 426 }
 427
 428 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
 429 {
 430         struct adapter *adapter = dev->ml_priv;
 431
 432         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 433         strlcpy(info->bus_info, pci_name(adapter->pdev),
 434                 sizeof(info->bus_info));
 435 }
 436
 437 static int get_sset_count(struct net_device *dev, int sset)
 438 {
 439         switch (sset) {
 440         case ETH_SS_STATS:
 441                 return ARRAY_SIZE(stats_strings);
 442         default:
 443                 return -EOPNOTSUPP;
 444         }
 445 }
 446
 447 static void get_strings(struct net_device *dev, u32 stringset, u8 *data)
 448 {
 449         if (stringset == ETH_SS_STATS)
 450                 memcpy(data, stats_strings, sizeof(stats_strings));
 451 }
 452
 453 static void get_stats(struct net_device *dev, struct ethtool_stats *stats,
 454                       u64 *data)
 455 {
 456         struct adapter *adapter = dev->ml_priv;
 457         struct cmac *mac = adapter->port[dev->if_port].mac;
 458         const struct cmac_statistics *s;
 459         const struct sge_intr_counts *t;
 460         struct sge_port_stats ss;
 461
 462         s = mac->ops->statistics_update(mac, MAC_STATS_UPDATE_FULL);
 463         t = t1_sge_get_intr_counts(adapter->sge);
 464         t1_sge_get_port_stats(adapter->sge, dev->if_port, &ss);
 465
 466         *data++ = s->TxOctetsOK;
 467         *data++ = s->TxOctetsBad;
 468         *data++ = s->TxUnicastFramesOK;
 469         *data++ = s->TxMulticastFramesOK;
 470         *data++ = s->TxBroadcastFramesOK;
 471         *data++ = s->TxPauseFrames;
 472         *data++ = s->TxFramesWithDeferredXmissions;
 473         *data++ = s->TxLateCollisions;
 474         *data++ = s->TxTotalCollisions;
 475         *data++ = s->TxFramesAbortedDueToXSCollisions;
 476         *data++ = s->TxUnderrun;
 477         *data++ = s->TxLengthErrors;
 478         *data++ = s->TxInternalMACXmitError;
 479         *data++ = s->TxFramesWithExcessiveDeferral;
 480         *data++ = s->TxFCSErrors;
 481         *data++ = s->TxJumboFramesOK;
 482         *data++ = s->TxJumboOctetsOK;
 483
 484         *data++ = s->RxOctetsOK;
 485         *data++ = s->RxOctetsBad;
 486         *data++ = s->RxUnicastFramesOK;
 487         *data++ = s->RxMulticastFramesOK;
 488         *data++ = s->RxBroadcastFramesOK;
 489         *data++ = s->RxPauseFrames;
 490         *data++ = s->RxFCSErrors;
 491         *data++ = s->RxAlignErrors;
 492         *data++ = s->RxSymbolErrors;
 493         *data++ = s->RxDataErrors;
 494         *data++ = s->RxSequenceErrors;
 495         *data++ = s->RxRuntErrors;
 496         *data++ = s->RxJabberErrors;
 497         *data++ = s->RxInternalMACRcvError;
 498         *data++ = s->RxInRangeLengthErrors;
 499         *data++ = s->RxOutOfRangeLengthField;
 500         *data++ = s->RxFrameTooLongErrors;
 501         *data++ = s->RxJumboFramesOK;
 502         *data++ = s->RxJumboOctetsOK;
 503
 504         *data++ = ss.rx_cso_good;
 505         *data++ = ss.tx_cso;
 506         *data++ = ss.tx_tso;
 507         *data++ = ss.vlan_xtract;
 508         *data++ = ss.vlan_insert;
 509         *data++ = ss.tx_need_hdrroom;
 510
 511         *data++ = t->rx_drops;
 512         *data++ = t->pure_rsps;
 513         *data++ = t->unhandled_irqs;
 514         *data++ = t->respQ_empty;
 515         *data++ = t->respQ_overflow;
 516         *data++ = t->freelistQ_empty;
 517         *data++ = t->pkt_too_big;
 518         *data++ = t->pkt_mismatch;
 519         *data++ = t->cmdQ_full[0];
 520         *data++ = t->cmdQ_full[1];
 521
 522         if (adapter->espi) {
 523                 const struct espi_intr_counts *e;
 524
 525                 e = t1_espi_get_intr_counts(adapter->espi);
 526                 *data++ = e->DIP2_parity_err;
 527                 *data++ = e->DIP4_err;
 528                 *data++ = e->rx_drops;
 529                 *data++ = e->tx_drops;
 530                 *data++ = e->rx_ovflw;
 531                 *data++ = e->parity_err;
 532         }
 533 }
 534
 535 static inline void reg_block_dump(struct adapter *ap, void *buf,
 536                                   unsigned int start, unsigned int end)
 537 {
 538         u32 *p = buf + start;
 539
 540         for ( ; start <= end; start += sizeof(u32))
 541                 *p++ = readl(ap->regs + start);
 542 }
 543
 544 static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
 545                      void *buf)
 546 {
 547         struct adapter *ap = dev->ml_priv;
 548
 549         /*
 550          * Version scheme: bits 0..9: chip version, bits 10..15: chip revision
 551          */
 552         regs->version = 2;
 553
 554         memset(buf, 0, T2_REGMAP_SIZE);
 555         reg_block_dump(ap, buf, 0, A_SG_RESPACCUTIMER);
 556         reg_block_dump(ap, buf, A_MC3_CFG, A_MC4_INT_CAUSE);
 557         reg_block_dump(ap, buf, A_TPI_ADDR, A_TPI_PAR);
 558         reg_block_dump(ap, buf, A_TP_IN_CONFIG, A_TP_TX_DROP_COUNT);
 559         reg_block_dump(ap, buf, A_RAT_ROUTE_CONTROL, A_RAT_INTR_CAUSE);
 560         reg_block_dump(ap, buf, A_CSPI_RX_AE_WM, A_CSPI_INTR_ENABLE);
 561         reg_block_dump(ap, buf, A_ESPI_SCH_TOKEN0, A_ESPI_GOSTAT);
 562         reg_block_dump(ap, buf, A_ULP_ULIMIT, A_ULP_PIO_CTRL);
 563         reg_block_dump(ap, buf, A_PL_ENABLE, A_PL_CAUSE);
 564         reg_block_dump(ap, buf, A_MC5_CONFIG, A_MC5_MASK_WRITE_CMD);
 565 }
 566
 567 static int get_link_ksettings(struct net_device *dev,
 568                               struct ethtool_link_ksettings *cmd)
 569 {
 570         struct adapter *adapter = dev->ml_priv;
 571         struct port_info *p = &adapter->port[dev->if_port];
 572         u32 supported, advertising;
 573
 574         supported = p->link_config.supported;
 575         advertising = p->link_config.advertising;
 576
 577         if (netif_carrier_ok(dev)) {
 578                 cmd->base.speed = p->link_config.speed;
 579                 cmd->base.duplex = p->link_config.duplex;
 580         } else {
 581                 cmd->base.speed = SPEED_UNKNOWN;
 582                 cmd->base.duplex = DUPLEX_UNKNOWN;
 583         }
 584
 585         cmd->base.port = (supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE;
 586         cmd->base.phy_address = p->phy->mdio.prtad;
 587         cmd->base.autoneg = p->link_config.autoneg;
 588
 589         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
 590                                                 supported);
 591         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
 592                                                 advertising);
 593
 594         return 0;
 595 }
 596
 597 static int speed_duplex_to_caps(int speed, int duplex)
 598 {
 599         int cap = 0;
 600
 601         switch (speed) {
 602         case SPEED_10:
 603                 if (duplex == DUPLEX_FULL)
 604                         cap = SUPPORTED_10baseT_Full;
 605                 else
 606                         cap = SUPPORTED_10baseT_Half;
 607                 break;
 608         case SPEED_100:
 609                 if (duplex == DUPLEX_FULL)
 610                         cap = SUPPORTED_100baseT_Full;
 611                 else
 612                         cap = SUPPORTED_100baseT_Half;
 613                 break;
 614         case SPEED_1000:
 615                 if (duplex == DUPLEX_FULL)
 616                         cap = SUPPORTED_1000baseT_Full;
 617                 else
 618                         cap = SUPPORTED_1000baseT_Half;
 619                 break;
 620         case SPEED_10000:
 621                 if (duplex == DUPLEX_FULL)
 622                         cap = SUPPORTED_10000baseT_Full;
 623         }
 624         return cap;
 625 }
 626
 627 #define ADVERTISED_MASK (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | \
 628                       ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | \
 629                       ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full | \
 630                       ADVERTISED_10000baseT_Full)
 631
 632 static int set_link_ksettings(struct net_device *dev,
 633                               const struct ethtool_link_ksettings *cmd)
 634 {
 635         struct adapter *adapter = dev->ml_priv;
 636         struct port_info *p = &adapter->port[dev->if_port];
 637         struct link_config *lc = &p->link_config;
 638         u32 advertising;
 639
 640         ethtool_convert_link_mode_to_legacy_u32(&advertising,
 641                                                 cmd->link_modes.advertising);
 642
 643         if (!(lc->supported & SUPPORTED_Autoneg))
 644                 return -EOPNOTSUPP;             /* can't change speed/duplex */
 645
 646         if (cmd->base.autoneg == AUTONEG_DISABLE) {
 647                 u32 speed = cmd->base.speed;
 648                 int cap = speed_duplex_to_caps(speed, cmd->base.duplex);
 649
 650                 if (!(lc->supported & cap) || (speed == SPEED_1000))
 651                         return -EINVAL;
 652                 lc->requested_speed = speed;
 653                 lc->requested_duplex = cmd->base.duplex;
 654                 lc->advertising = 0;
 655         } else {
 656                 advertising &= ADVERTISED_MASK;
 657                 if (advertising & (advertising - 1))
 658                         advertising = lc->supported;
 659                 advertising &= lc->supported;
 660                 if (!advertising)
 661                         return -EINVAL;
 662                 lc->requested_speed = SPEED_INVALID;
 663                 lc->requested_duplex = DUPLEX_INVALID;
 664                 lc->advertising = advertising | ADVERTISED_Autoneg;
 665         }
 666         lc->autoneg = cmd->base.autoneg;
 667         if (netif_running(dev))
 668                 t1_link_start(p->phy, p->mac, lc);
 669         return 0;
 670 }
 671
 672 static void get_pauseparam(struct net_device *dev,
 673                            struct ethtool_pauseparam *epause)
 674 {
 675         struct adapter *adapter = dev->ml_priv;
 676         struct port_info *p = &adapter->port[dev->if_port];
 677
 678         epause->autoneg = (p->link_config.requested_fc & PAUSE_AUTONEG) != 0;
 679         epause->rx_pause = (p->link_config.fc & PAUSE_RX) != 0;
 680         epause->tx_pause = (p->link_config.fc & PAUSE_TX) != 0;
 681 }
 682
 683 static int set_pauseparam(struct net_device *dev,
 684                           struct ethtool_pauseparam *epause)
 685 {
 686         struct adapter *adapter = dev->ml_priv;
 687         struct port_info *p = &adapter->port[dev->if_port];
 688         struct link_config *lc = &p->link_config;
 689
 690         if (epause->autoneg == AUTONEG_DISABLE)
 691                 lc->requested_fc = 0;
 692         else if (lc->supported & SUPPORTED_Autoneg)
 693                 lc->requested_fc = PAUSE_AUTONEG;
 694         else
 695                 return -EINVAL;
 696
 697         if (epause->rx_pause)
 698                 lc->requested_fc |= PAUSE_RX;
 699         if (epause->tx_pause)
 700                 lc->requested_fc |= PAUSE_TX;
 701         if (lc->autoneg == AUTONEG_ENABLE) {
 702                 if (netif_running(dev))
 703                         t1_link_start(p->phy, p->mac, lc);
 704         } else {
 705                 lc->fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
 706                 if (netif_running(dev))
 707                         p->mac->ops->set_speed_duplex_fc(p->mac, -1, -1,
 708                                                          lc->fc);
 709         }
 710         return 0;
 711 }
 712
 713 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
 714 {
 715         struct adapter *adapter = dev->ml_priv;
 716         int jumbo_fl = t1_is_T1B(adapter) ? 1 : 0;
 717
 718         e->rx_max_pending = MAX_RX_BUFFERS;
 719         e->rx_jumbo_max_pending = MAX_RX_JUMBO_BUFFERS;
 720         e->tx_max_pending = MAX_CMDQ_ENTRIES;
 721
 722         e->rx_pending = adapter->params.sge.freelQ_size[!jumbo_fl];
 723         e->rx_jumbo_pending = adapter->params.sge.freelQ_size[jumbo_fl];
 724         e->tx_pending = adapter->params.sge.cmdQ_size[0];
 725 }
 726
 727 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
 728 {
 729         struct adapter *adapter = dev->ml_priv;
 730         int jumbo_fl = t1_is_T1B(adapter) ? 1 : 0;
 731
 732         if (e->rx_pending > MAX_RX_BUFFERS || e->rx_mini_pending ||
 733             e->rx_jumbo_pending > MAX_RX_JUMBO_BUFFERS ||
 734             e->tx_pending > MAX_CMDQ_ENTRIES ||
 735             e->rx_pending < MIN_FL_ENTRIES ||
 736             e->rx_jumbo_pending < MIN_FL_ENTRIES ||
 737             e->tx_pending < (adapter->params.nports + 1) * (MAX_SKB_FRAGS + 1))
 738                 return -EINVAL;
 739
 740         if (adapter->flags & FULL_INIT_DONE)
 741                 return -EBUSY;
 742
 743         adapter->params.sge.freelQ_size[!jumbo_fl] = e->rx_pending;
 744         adapter->params.sge.freelQ_size[jumbo_fl] = e->rx_jumbo_pending;
 745         adapter->params.sge.cmdQ_size[0] = e->tx_pending;
 746         adapter->params.sge.cmdQ_size[1] = e->tx_pending > MAX_CMDQ1_ENTRIES ?
 747                 MAX_CMDQ1_ENTRIES : e->tx_pending;
 748         return 0;
 749 }
 750
 751 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
 752 {
 753         struct adapter *adapter = dev->ml_priv;
 754
 755         adapter->params.sge.rx_coalesce_usecs = c->rx_coalesce_usecs;
 756         adapter->params.sge.coalesce_enable = c->use_adaptive_rx_coalesce;
 757         adapter->params.sge.sample_interval_usecs = c->rate_sample_interval;
 758         t1_sge_set_coalesce_params(adapter->sge, &adapter->params.sge);
 759         return 0;
 760 }
 761
 762 static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
 763 {
 764         struct adapter *adapter = dev->ml_priv;
 765
 766         c->rx_coalesce_usecs = adapter->params.sge.rx_coalesce_usecs;
 767         c->rate_sample_interval = adapter->params.sge.sample_interval_usecs;
 768         c->use_adaptive_rx_coalesce = adapter->params.sge.coalesce_enable;
 769         return 0;
 770 }
 771
 772 static int get_eeprom_len(struct net_device *dev)
 773 {
 774         struct adapter *adapter = dev->ml_priv;
 775
 776         return t1_is_asic(adapter) ? EEPROM_SIZE : 0;
 777 }
 778
 779 #define EEPROM_MAGIC(ap) \
 780         (PCI_VENDOR_ID_CHELSIO | ((ap)->params.chip_version << 16))
 781
 782 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e,
 783                       u8 *data)
 784 {
 785         int i;
 786         u8 buf[EEPROM_SIZE] __attribute__((aligned(4)));
 787         struct adapter *adapter = dev->ml_priv;
 788
 789         e->magic = EEPROM_MAGIC(adapter);
 790         for (i = e->offset & ~3; i < e->offset + e->len; i += sizeof(u32))
 791                 t1_seeprom_read(adapter, i, (__le32 *)&buf[i]);
 792         memcpy(data, buf + e->offset, e->len);
 793         return 0;
 794 }
 795
 796 static const struct ethtool_ops t1_ethtool_ops = {
 797         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
 798                                      ETHTOOL_COALESCE_USE_ADAPTIVE_RX |
 799                                      ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL,
 800         .get_drvinfo       = get_drvinfo,
 801         .get_msglevel      = get_msglevel,
 802         .set_msglevel      = set_msglevel,
 803         .get_ringparam     = get_sge_param,
 804         .set_ringparam     = set_sge_param,
 805         .get_coalesce      = get_coalesce,
 806         .set_coalesce      = set_coalesce,
 807         .get_eeprom_len    = get_eeprom_len,
 808         .get_eeprom        = get_eeprom,
 809         .get_pauseparam    = get_pauseparam,
 810         .set_pauseparam    = set_pauseparam,
 811         .get_link          = ethtool_op_get_link,
 812         .get_strings       = get_strings,
 813         .get_sset_count    = get_sset_count,
 814         .get_ethtool_stats = get_stats,
 815         .get_regs_len      = get_regs_len,
 816         .get_regs          = get_regs,
 817         .get_link_ksettings = get_link_ksettings,
 818         .set_link_ksettings = set_link_ksettings,
 819 };
 820
 821 static int t1_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
 822 {
 823         struct adapter *adapter = dev->ml_priv;
 824         struct mdio_if_info *mdio = &adapter->port[dev->if_port].phy->mdio;
 825
 826         return mdio_mii_ioctl(mdio, if_mii(req), cmd);
 827 }
 828
 829 static int t1_change_mtu(struct net_device *dev, int new_mtu)
 830 {
 831         int ret;
 832         struct adapter *adapter = dev->ml_priv;
 833         struct cmac *mac = adapter->port[dev->if_port].mac;
 834
 835         if (!mac->ops->set_mtu)
 836                 return -EOPNOTSUPP;
 837         if ((ret = mac->ops->set_mtu(mac, new_mtu)))
 838                 return ret;
 839         dev->mtu = new_mtu;
 840         return 0;
 841 }
 842
 843 static int t1_set_mac_addr(struct net_device *dev, void *p)
 844 {
 845         struct adapter *adapter = dev->ml_priv;
 846         struct cmac *mac = adapter->port[dev->if_port].mac;
 847         struct sockaddr *addr = p;
 848
 849         if (!mac->ops->macaddress_set)
 850                 return -EOPNOTSUPP;
 851
 852         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 853         mac->ops->macaddress_set(mac, dev->dev_addr);
 854         return 0;
 855 }
 856
 857 static netdev_features_t t1_fix_features(struct net_device *dev,
 858         netdev_features_t features)
 859 {
 860         /*
 861          * Since there is no support for separate rx/tx vlan accel
 862          * enable/disable make sure tx flag is always in same state as rx.
 863          */
 864         if (features & NETIF_F_HW_VLAN_CTAG_RX)
 865                 features |= NETIF_F_HW_VLAN_CTAG_TX;
 866         else
 867                 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
 868
 869         return features;
 870 }
 871
 872 static int t1_set_features(struct net_device *dev, netdev_features_t features)
 873 {
 874         netdev_features_t changed = dev->features ^ features;
 875         struct adapter *adapter = dev->ml_priv;
 876
 877         if (changed & NETIF_F_HW_VLAN_CTAG_RX)
 878                 t1_vlan_mode(adapter, features);
 879
 880         return 0;
 881 }
 882 #ifdef CONFIG_NET_POLL_CONTROLLER
 883 static void t1_netpoll(struct net_device *dev)
 884 {
 885         unsigned long flags;
 886         struct adapter *adapter = dev->ml_priv;
 887
 888         local_irq_save(flags);
 889         t1_interrupt(adapter->pdev->irq, adapter);
 890         local_irq_restore(flags);
 891 }
 892 #endif
 893
 894 /*
 895  * Periodic accumulation of MAC statistics.  This is used only if the MAC
 896  * does not have any other way to prevent stats counter overflow.
 897  */
 898 static void mac_stats_task(struct work_struct *work)
 899 {
 900         int i;
 901         struct adapter *adapter =
 902                 container_of(work, struct adapter, stats_update_task.work);
 903
 904         for_each_port(adapter, i) {
 905                 struct port_info *p = &adapter->port[i];
 906
 907                 if (netif_running(p->dev))
 908                         p->mac->ops->statistics_update(p->mac,
 909                                                        MAC_STATS_UPDATE_FAST);
 910         }
 911
 912         /* Schedule the next statistics update if any port is active. */
 913         spin_lock(&adapter->work_lock);
 914         if (adapter->open_device_map & PORT_MASK)
 915                 schedule_mac_stats_update(adapter,
 916                                           adapter->params.stats_update_period);
 917         spin_unlock(&adapter->work_lock);
 918 }
 919
 920 static const struct net_device_ops cxgb_netdev_ops = {
 921         .ndo_open               = cxgb_open,
 922         .ndo_stop               = cxgb_close,
 923         .ndo_start_xmit         = t1_start_xmit,
 924         .ndo_get_stats          = t1_get_stats,
 925         .ndo_validate_addr      = eth_validate_addr,
 926         .ndo_set_rx_mode        = t1_set_rxmode,
 927         .ndo_eth_ioctl          = t1_ioctl,
 928         .ndo_change_mtu         = t1_change_mtu,
 929         .ndo_set_mac_address    = t1_set_mac_addr,
 930         .ndo_fix_features       = t1_fix_features,
 931         .ndo_set_features       = t1_set_features,
 932 #ifdef CONFIG_NET_POLL_CONTROLLER
 933         .ndo_poll_controller    = t1_netpoll,
 934 #endif
 935 };
 936
 937 static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 938 {
 939         int i, err, pci_using_dac = 0;
 940         unsigned long mmio_start, mmio_len;
 941         const struct board_info *bi;
 942         struct adapter *adapter = NULL;
 943         struct port_info *pi;
 944
 945         err = pci_enable_device(pdev);
 946         if (err)
 947                 return err;
 948
 949         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
 950                 pr_err("%s: cannot find PCI device memory base address\n",
 951                        pci_name(pdev));
 952                 err = -ENODEV;
 953                 goto out_disable_pdev;
 954         }
 955
 956         if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
 957                 pci_using_dac = 1;
 958
 959                 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
 960                         pr_err("%s: unable to obtain 64-bit DMA for coherent allocations\n",
 961                                pci_name(pdev));
 962                         err = -ENODEV;
 963                         goto out_disable_pdev;
 964                 }
 965
 966         } else if ((err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) != 0) {
 967                 pr_err("%s: no usable DMA configuration\n", pci_name(pdev));
 968                 goto out_disable_pdev;
 969         }
 970
 971         err = pci_request_regions(pdev, DRV_NAME);
 972         if (err) {
 973                 pr_err("%s: cannot obtain PCI resources\n", pci_name(pdev));
 974                 goto out_disable_pdev;
 975         }
 976
 977         pci_set_master(pdev);
 978
 979         mmio_start = pci_resource_start(pdev, 0);
 980         mmio_len = pci_resource_len(pdev, 0);
 981         bi = t1_get_board_info(ent->driver_data);
 982
 983         for (i = 0; i < bi->port_number; ++i) {
 984                 struct net_device *netdev;
 985
 986                 netdev = alloc_etherdev(adapter ? 0 : sizeof(*adapter));
 987                 if (!netdev) {
 988                         err = -ENOMEM;
 989                         goto out_free_dev;
 990                 }
 991
 992                 SET_NETDEV_DEV(netdev, &pdev->dev);
 993
 994                 if (!adapter) {
 995                         adapter = netdev_priv(netdev);
 996                         adapter->pdev = pdev;
 997                         adapter->port[0].dev = netdev;  /* so we don't leak it */
 998
 999                         adapter->regs = ioremap(mmio_start, mmio_len);
1000                         if (!adapter->regs) {
1001                                 pr_err("%s: cannot map device registers\n",
1002                                        pci_name(pdev));
1003                                 err = -ENOMEM;
1004                                 goto out_free_dev;
1005                         }
1006
1007                         if (t1_get_board_rev(adapter, bi, &adapter->params)) {
1008                                 err = -ENODEV;    /* Can't handle this chip rev */
1009                                 goto out_free_dev;
1010                         }
1011
1012                         adapter->name = pci_name(pdev);
1013                         adapter->msg_enable = dflt_msg_enable;
1014                         adapter->mmio_len = mmio_len;
1015
1016                         spin_lock_init(&adapter->tpi_lock);
1017                         spin_lock_init(&adapter->work_lock);
1018                         spin_lock_init(&adapter->async_lock);
1019                         spin_lock_init(&adapter->mac_lock);
1020
1021                         INIT_DELAYED_WORK(&adapter->stats_update_task,
1022                                           mac_stats_task);
1023
1024                         pci_set_drvdata(pdev, netdev);
1025                 }
1026
1027                 pi = &adapter->port[i];
1028                 pi->dev = netdev;
1029                 netif_carrier_off(netdev);
1030                 netdev->irq = pdev->irq;
1031                 netdev->if_port = i;
1032                 netdev->mem_start = mmio_start;
1033                 netdev->mem_end = mmio_start + mmio_len - 1;
1034                 netdev->ml_priv = adapter;
1035                 netdev->hw_features |= NETIF_F_SG | NETIF_F_IP_CSUM |
1036                         NETIF_F_RXCSUM;
1037                 netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM |
1038                         NETIF_F_RXCSUM | NETIF_F_LLTX;
1039
1040                 if (pci_using_dac)
1041                         netdev->features |= NETIF_F_HIGHDMA;
1042                 if (vlan_tso_capable(adapter)) {
1043                         netdev->features |=
1044                                 NETIF_F_HW_VLAN_CTAG_TX |
1045                                 NETIF_F_HW_VLAN_CTAG_RX;
1046                         netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
1047
1048                         /* T204: disable TSO */
1049                         if (!(is_T2(adapter)) || bi->port_number != 4) {
1050                                 netdev->hw_features |= NETIF_F_TSO;
1051                                 netdev->features |= NETIF_F_TSO;
1052                         }
1053                 }
1054
1055                 netdev->netdev_ops = &cxgb_netdev_ops;
1056                 netdev->hard_header_len += (netdev->hw_features & NETIF_F_TSO) ?
1057                         sizeof(struct cpl_tx_pkt_lso) : sizeof(struct cpl_tx_pkt);
1058
1059                 netif_napi_add(netdev, &adapter->napi, t1_poll, 64);
1060
1061                 netdev->ethtool_ops = &t1_ethtool_ops;
1062
1063                 switch (bi->board) {
1064                 case CHBT_BOARD_CHT110:
1065                 case CHBT_BOARD_N110:
1066                 case CHBT_BOARD_N210:
1067                 case CHBT_BOARD_CHT210:
1068                         netdev->max_mtu = PM3393_MAX_FRAME_SIZE -
1069                                           (ETH_HLEN + ETH_FCS_LEN);
1070                         break;
1071                 case CHBT_BOARD_CHN204:
1072                         netdev->max_mtu = VSC7326_MAX_MTU;
1073                         break;
1074                 default:
1075                         netdev->max_mtu = ETH_DATA_LEN;
1076                         break;
1077                 }
1078         }
1079
1080         if (t1_init_sw_modules(adapter, bi) < 0) {
1081                 err = -ENODEV;
1082                 goto out_free_dev;
1083         }
1084
1085         /*
1086          * The card is now ready to go.  If any errors occur during device
1087          * registration we do not fail the whole card but rather proceed only
1088          * with the ports we manage to register successfully.  However we must
1089          * register at least one net device.
1090          */
1091         for (i = 0; i < bi->port_number; ++i) {
1092                 err = register_netdev(adapter->port[i].dev);
1093                 if (err)
1094                         pr_warn("%s: cannot register net device %s, skipping\n",
1095                                 pci_name(pdev), adapter->port[i].dev->name);
1096                 else {
1097                         /*
1098                          * Change the name we use for messages to the name of
1099                          * the first successfully registered interface.
1100                          */
1101                         if (!adapter->registered_device_map)
1102                                 adapter->name = adapter->port[i].dev->name;
1103
1104                         __set_bit(i, &adapter->registered_device_map);
1105                 }
1106         }
1107         if (!adapter->registered_device_map) {
1108                 pr_err("%s: could not register any net devices\n",
1109                        pci_name(pdev));
1110                 goto out_release_adapter_res;
1111         }
1112
1113         pr_info("%s: %s (rev %d), %s %dMHz/%d-bit\n",
1114                 adapter->name, bi->desc, adapter->params.chip_revision,
1115                 adapter->params.pci.is_pcix ? "PCIX" : "PCI",
1116                 adapter->params.pci.speed, adapter->params.pci.width);
1117
1118         /*
1119          * Set the T1B ASIC and memory clocks.
1120          */
1121         if (t1powersave)
1122                 adapter->t1powersave = LCLOCK;  /* HW default is powersave mode. */
1123         else
1124                 adapter->t1powersave = HCLOCK;
1125         if (t1_is_T1B(adapter))
1126                 t1_clock(adapter, t1powersave);
1127
1128         return 0;
1129
1130 out_release_adapter_res:
1131         t1_free_sw_modules(adapter);
1132 out_free_dev:
1133         if (adapter) {
1134                 if (adapter->regs)
1135                         iounmap(adapter->regs);
1136                 for (i = bi->port_number - 1; i >= 0; --i)
1137                         if (adapter->port[i].dev)
1138                                 free_netdev(adapter->port[i].dev);
1139         }
1140         pci_release_regions(pdev);
1141 out_disable_pdev:
1142         pci_disable_device(pdev);
1143         return err;
1144 }
1145
1146 static void bit_bang(struct adapter *adapter, int bitdata, int nbits)
1147 {
1148         int data;
1149         int i;
1150         u32 val;
1151
1152         enum {
1153                 S_CLOCK = 1 << 3,
1154                 S_DATA = 1 << 4
1155         };
1156
1157         for (i = (nbits - 1); i > -1; i--) {
1158
1159                 udelay(50);
1160
1161                 data = ((bitdata >> i) & 0x1);
1162                 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1163
1164                 if (data)
1165                         val |= S_DATA;
1166                 else
1167                         val &= ~S_DATA;
1168
1169                 udelay(50);
1170
1171                 /* Set SCLOCK low */
1172                 val &= ~S_CLOCK;
1173                 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1174
1175                 udelay(50);
1176
1177                 /* Write SCLOCK high */
1178                 val |= S_CLOCK;
1179                 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1180
1181         }
1182 }
1183
1184 static int t1_clock(struct adapter *adapter, int mode)
1185 {
1186         u32 val;
1187         int M_CORE_VAL;
1188         int M_MEM_VAL;
1189
1190         enum {
1191                 M_CORE_BITS     = 9,
1192                 T_CORE_VAL      = 0,
1193                 T_CORE_BITS     = 2,
1194                 N_CORE_VAL      = 0,
1195                 N_CORE_BITS     = 2,
1196                 M_MEM_BITS      = 9,
1197                 T_MEM_VAL       = 0,
1198                 T_MEM_BITS      = 2,
1199                 N_MEM_VAL       = 0,
1200                 N_MEM_BITS      = 2,
1201                 NP_LOAD         = 1 << 17,
1202                 S_LOAD_MEM      = 1 << 5,
1203                 S_LOAD_CORE     = 1 << 6,
1204                 S_CLOCK         = 1 << 3
1205         };
1206
1207         if (!t1_is_T1B(adapter))
1208                 return -ENODEV; /* Can't re-clock this chip. */
1209
1210         if (mode & 2)
1211                 return 0;       /* show current mode. */
1212
1213         if ((adapter->t1powersave & 1) == (mode & 1))
1214                 return -EALREADY;       /* ASIC already running in mode. */
1215
1216         if ((mode & 1) == HCLOCK) {
1217                 M_CORE_VAL = 0x14;
1218                 M_MEM_VAL = 0x18;
1219                 adapter->t1powersave = HCLOCK;  /* overclock */
1220         } else {
1221                 M_CORE_VAL = 0xe;
1222                 M_MEM_VAL = 0x10;
1223                 adapter->t1powersave = LCLOCK;  /* underclock */
1224         }
1225
1226         /* Don't interrupt this serial stream! */
1227         spin_lock(&adapter->tpi_lock);
1228
1229         /* Initialize for ASIC core */
1230         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1231         val |= NP_LOAD;
1232         udelay(50);
1233         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1234         udelay(50);
1235         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1236         val &= ~S_LOAD_CORE;
1237         val &= ~S_CLOCK;
1238         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1239         udelay(50);
1240
1241         /* Serial program the ASIC clock synthesizer */
1242         bit_bang(adapter, T_CORE_VAL, T_CORE_BITS);
1243         bit_bang(adapter, N_CORE_VAL, N_CORE_BITS);
1244         bit_bang(adapter, M_CORE_VAL, M_CORE_BITS);
1245         udelay(50);
1246
1247         /* Finish ASIC core */
1248         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1249         val |= S_LOAD_CORE;
1250         udelay(50);
1251         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1252         udelay(50);
1253         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1254         val &= ~S_LOAD_CORE;
1255         udelay(50);
1256         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1257         udelay(50);
1258
1259         /* Initialize for memory */
1260         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1261         val |= NP_LOAD;
1262         udelay(50);
1263         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1264         udelay(50);
1265         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1266         val &= ~S_LOAD_MEM;
1267         val &= ~S_CLOCK;
1268         udelay(50);
1269         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1270         udelay(50);
1271
1272         /* Serial program the memory clock synthesizer */
1273         bit_bang(adapter, T_MEM_VAL, T_MEM_BITS);
1274         bit_bang(adapter, N_MEM_VAL, N_MEM_BITS);
1275         bit_bang(adapter, M_MEM_VAL, M_MEM_BITS);
1276         udelay(50);
1277
1278         /* Finish memory */
1279         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1280         val |= S_LOAD_MEM;
1281         udelay(50);
1282         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1283         udelay(50);
1284         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1285         val &= ~S_LOAD_MEM;
1286         udelay(50);
1287         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1288
1289         spin_unlock(&adapter->tpi_lock);
1290
1291         return 0;
1292 }
1293
1294 static inline void t1_sw_reset(struct pci_dev *pdev)
1295 {
1296         pci_write_config_dword(pdev, A_PCICFG_PM_CSR, 3);
1297         pci_write_config_dword(pdev, A_PCICFG_PM_CSR, 0);
1298 }
1299
1300 static void remove_one(struct pci_dev *pdev)
1301 {
1302         struct net_device *dev = pci_get_drvdata(pdev);
1303         struct adapter *adapter = dev->ml_priv;
1304         int i;
1305
1306         for_each_port(adapter, i) {
1307                 if (test_bit(i, &adapter->registered_device_map))
1308                         unregister_netdev(adapter->port[i].dev);
1309         }
1310
1311         t1_free_sw_modules(adapter);
1312         iounmap(adapter->regs);
1313
1314         while (--i >= 0) {
1315                 if (adapter->port[i].dev)
1316                         free_netdev(adapter->port[i].dev);
1317         }
1318
1319         pci_release_regions(pdev);
1320         pci_disable_device(pdev);
1321         t1_sw_reset(pdev);
1322 }
1323
1324 static struct pci_driver cxgb_pci_driver = {
1325         .name     = DRV_NAME,
1326         .id_table = t1_pci_tbl,
1327         .probe    = init_one,
1328         .remove   = remove_one,
1329 };
1330
1331 module_pci_driver(cxgb_pci_driver);