git.oblomov.eu Git - linux-2.6/blob - 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);
 224         err = request_irq(adapter->pdev->irq, t1_interrupt,
 225                           adapter->params.has_msi ? 0 : IRQF_SHARED,
 226                           adapter->name, adapter);
 227         if (err) {
 228                 if (adapter->params.has_msi)
 229                         pci_disable_msi(adapter->pdev);
 230
 231                 goto out_err;
 232         }
 233
 234         t1_sge_start(adapter->sge);
 235         t1_interrupts_enable(adapter);
 236 out_err:
 237         return err;
 238 }
 239
 240 /*
 241  * Release resources when all the ports have been stopped.
 242  */
 243 static void cxgb_down(struct adapter *adapter)
 244 {
 245         t1_sge_stop(adapter->sge);
 246         t1_interrupts_disable(adapter);
 247         free_irq(adapter->pdev->irq, adapter);
 248         if (adapter->params.has_msi)
 249                 pci_disable_msi(adapter->pdev);
 250 }
 251
 252 static int cxgb_open(struct net_device *dev)
 253 {
 254         int err;
 255         struct adapter *adapter = dev->priv;
 256         int other_ports = adapter->open_device_map & PORT_MASK;
 257
 258         if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0)
 259                 return err;
 260
 261         __set_bit(dev->if_port, &adapter->open_device_map);
 262         link_start(&adapter->port[dev->if_port]);
 263         netif_start_queue(dev);
 264         if (!other_ports && adapter->params.stats_update_period)
 265                 schedule_mac_stats_update(adapter,
 266                                           adapter->params.stats_update_period);
 267         return 0;
 268 }
 269
 270 static int cxgb_close(struct net_device *dev)
 271 {
 272         struct adapter *adapter = dev->priv;
 273         struct port_info *p = &adapter->port[dev->if_port];
 274         struct cmac *mac = p->mac;
 275
 276         netif_stop_queue(dev);
 277         mac->ops->disable(mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX);
 278         netif_carrier_off(dev);
 279
 280         clear_bit(dev->if_port, &adapter->open_device_map);
 281         if (adapter->params.stats_update_period &&
 282             !(adapter->open_device_map & PORT_MASK)) {
 283                 /* Stop statistics accumulation. */
 284                 smp_mb__after_clear_bit();
 285                 spin_lock(&adapter->work_lock);   /* sync with update task */
 286                 spin_unlock(&adapter->work_lock);
 287                 cancel_mac_stats_update(adapter);
 288         }
 289
 290         if (!adapter->open_device_map)
 291                 cxgb_down(adapter);
 292         return 0;
 293 }
 294
 295 static struct net_device_stats *t1_get_stats(struct net_device *dev)
 296 {
 297         struct adapter *adapter = dev->priv;
 298         struct port_info *p = &adapter->port[dev->if_port];
 299         struct net_device_stats *ns = &p->netstats;
 300         const struct cmac_statistics *pstats;
 301
 302         /* Do a full update of the MAC stats */
 303         pstats = p->mac->ops->statistics_update(p->mac,
 304                                                 MAC_STATS_UPDATE_FULL);
 305
 306         ns->tx_packets = pstats->TxUnicastFramesOK +
 307                 pstats->TxMulticastFramesOK + pstats->TxBroadcastFramesOK;
 308
 309         ns->rx_packets = pstats->RxUnicastFramesOK +
 310                 pstats->RxMulticastFramesOK + pstats->RxBroadcastFramesOK;
 311
 312         ns->tx_bytes = pstats->TxOctetsOK;
 313         ns->rx_bytes = pstats->RxOctetsOK;
 314
 315         ns->tx_errors = pstats->TxLateCollisions + pstats->TxLengthErrors +
 316                 pstats->TxUnderrun + pstats->TxFramesAbortedDueToXSCollisions;
 317         ns->rx_errors = pstats->RxDataErrors + pstats->RxJabberErrors +
 318                 pstats->RxFCSErrors + pstats->RxAlignErrors +
 319                 pstats->RxSequenceErrors + pstats->RxFrameTooLongErrors +
 320                 pstats->RxSymbolErrors + pstats->RxRuntErrors;
 321
 322         ns->multicast  = pstats->RxMulticastFramesOK;
 323         ns->collisions = pstats->TxTotalCollisions;
 324
 325         /* detailed rx_errors */
 326         ns->rx_length_errors = pstats->RxFrameTooLongErrors +
 327                 pstats->RxJabberErrors;
 328         ns->rx_over_errors   = 0;
 329         ns->rx_crc_errors    = pstats->RxFCSErrors;
 330         ns->rx_frame_errors  = pstats->RxAlignErrors;
 331         ns->rx_fifo_errors   = 0;
 332         ns->rx_missed_errors = 0;
 333
 334         /* detailed tx_errors */
 335         ns->tx_aborted_errors   = pstats->TxFramesAbortedDueToXSCollisions;
 336         ns->tx_carrier_errors   = 0;
 337         ns->tx_fifo_errors      = pstats->TxUnderrun;
 338         ns->tx_heartbeat_errors = 0;
 339         ns->tx_window_errors    = pstats->TxLateCollisions;
 340         return ns;
 341 }
 342
 343 static u32 get_msglevel(struct net_device *dev)
 344 {
 345         struct adapter *adapter = dev->priv;
 346
 347         return adapter->msg_enable;
 348 }
 349
 350 static void set_msglevel(struct net_device *dev, u32 val)
 351 {
 352         struct adapter *adapter = dev->priv;
 353
 354         adapter->msg_enable = val;
 355 }
 356
 357 static char stats_strings[][ETH_GSTRING_LEN] = {
 358         "TxOctetsOK",
 359         "TxOctetsBad",
 360         "TxUnicastFramesOK",
 361         "TxMulticastFramesOK",
 362         "TxBroadcastFramesOK",
 363         "TxPauseFrames",
 364         "TxFramesWithDeferredXmissions",
 365         "TxLateCollisions",
 366         "TxTotalCollisions",
 367         "TxFramesAbortedDueToXSCollisions",
 368         "TxUnderrun",
 369         "TxLengthErrors",
 370         "TxInternalMACXmitError",
 371         "TxFramesWithExcessiveDeferral",
 372         "TxFCSErrors",
 373
 374         "RxOctetsOK",
 375         "RxOctetsBad",
 376         "RxUnicastFramesOK",
 377         "RxMulticastFramesOK",
 378         "RxBroadcastFramesOK",
 379         "RxPauseFrames",
 380         "RxFCSErrors",
 381         "RxAlignErrors",
 382         "RxSymbolErrors",
 383         "RxDataErrors",
 384         "RxSequenceErrors",
 385         "RxRuntErrors",
 386         "RxJabberErrors",
 387         "RxInternalMACRcvError",
 388         "RxInRangeLengthErrors",
 389         "RxOutOfRangeLengthField",
 390         "RxFrameTooLongErrors",
 391
 392         /* Port stats */
 393         "RxPackets",
 394         "RxCsumGood",
 395         "TxPackets",
 396         "TxCsumOffload",
 397         "TxTso",
 398         "RxVlan",
 399         "TxVlan",
 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->priv;
 431
 432         strcpy(info->driver, DRV_NAME);
 433         strcpy(info->version, DRV_VERSION);
 434         strcpy(info->fw_version, "N/A");
 435         strcpy(info->bus_info, pci_name(adapter->pdev));
 436 }
 437
 438 static int get_stats_count(struct net_device *dev)
 439 {
 440         return ARRAY_SIZE(stats_strings);
 441 }
 442
 443 static void get_strings(struct net_device *dev, u32 stringset, u8 *data)
 444 {
 445         if (stringset == ETH_SS_STATS)
 446                 memcpy(data, stats_strings, sizeof(stats_strings));
 447 }
 448
 449 static void get_stats(struct net_device *dev, struct ethtool_stats *stats,
 450                       u64 *data)
 451 {
 452         struct adapter *adapter = dev->priv;
 453         struct cmac *mac = adapter->port[dev->if_port].mac;
 454         const struct cmac_statistics *s;
 455         const struct sge_intr_counts *t;
 456         struct sge_port_stats ss;
 457         unsigned int len;
 458
 459         s = mac->ops->statistics_update(mac, MAC_STATS_UPDATE_FULL);
 460
 461         len = sizeof(u64)*(&s->TxFCSErrors + 1 - &s->TxOctetsOK);
 462         memcpy(data, &s->TxOctetsOK, len);
 463         data += len;
 464
 465         len = sizeof(u64)*(&s->RxFrameTooLongErrors + 1 - &s->RxOctetsOK);
 466         memcpy(data, &s->RxOctetsOK, len);
 467         data += len;
 468
 469         t1_sge_get_port_stats(adapter->sge, dev->if_port, &ss);
 470         memcpy(data, &ss, sizeof(ss));
 471         data += sizeof(ss);
 472
 473         t = t1_sge_get_intr_counts(adapter->sge);
 474         *data++ = t->rx_drops;
 475         *data++ = t->pure_rsps;
 476         *data++ = t->unhandled_irqs;
 477         *data++ = t->respQ_empty;
 478         *data++ = t->respQ_overflow;
 479         *data++ = t->freelistQ_empty;
 480         *data++ = t->pkt_too_big;
 481         *data++ = t->pkt_mismatch;
 482         *data++ = t->cmdQ_full[0];
 483         *data++ = t->cmdQ_full[1];
 484
 485         if (adapter->espi) {
 486                 const struct espi_intr_counts *e;
 487
 488                 e = t1_espi_get_intr_counts(adapter->espi);
 489                 *data++ = e->DIP2_parity_err;
 490                 *data++ = e->DIP4_err;
 491                 *data++ = e->rx_drops;
 492                 *data++ = e->tx_drops;
 493                 *data++ = e->rx_ovflw;
 494                 *data++ = e->parity_err;
 495         }
 496 }
 497
 498 static inline void reg_block_dump(struct adapter *ap, void *buf,
 499                                   unsigned int start, unsigned int end)
 500 {
 501         u32 *p = buf + start;
 502
 503         for ( ; start <= end; start += sizeof(u32))
 504                 *p++ = readl(ap->regs + start);
 505 }
 506
 507 static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
 508                      void *buf)
 509 {
 510         struct adapter *ap = dev->priv;
 511
 512         /*
 513          * Version scheme: bits 0..9: chip version, bits 10..15: chip revision
 514          */
 515         regs->version = 2;
 516
 517         memset(buf, 0, T2_REGMAP_SIZE);
 518         reg_block_dump(ap, buf, 0, A_SG_RESPACCUTIMER);
 519         reg_block_dump(ap, buf, A_MC3_CFG, A_MC4_INT_CAUSE);
 520         reg_block_dump(ap, buf, A_TPI_ADDR, A_TPI_PAR);
 521         reg_block_dump(ap, buf, A_TP_IN_CONFIG, A_TP_TX_DROP_COUNT);
 522         reg_block_dump(ap, buf, A_RAT_ROUTE_CONTROL, A_RAT_INTR_CAUSE);
 523         reg_block_dump(ap, buf, A_CSPI_RX_AE_WM, A_CSPI_INTR_ENABLE);
 524         reg_block_dump(ap, buf, A_ESPI_SCH_TOKEN0, A_ESPI_GOSTAT);
 525         reg_block_dump(ap, buf, A_ULP_ULIMIT, A_ULP_PIO_CTRL);
 526         reg_block_dump(ap, buf, A_PL_ENABLE, A_PL_CAUSE);
 527         reg_block_dump(ap, buf, A_MC5_CONFIG, A_MC5_MASK_WRITE_CMD);
 528 }
 529
 530 static int get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 531 {
 532         struct adapter *adapter = dev->priv;
 533         struct port_info *p = &adapter->port[dev->if_port];
 534
 535         cmd->supported = p->link_config.supported;
 536         cmd->advertising = p->link_config.advertising;
 537
 538         if (netif_carrier_ok(dev)) {
 539                 cmd->speed = p->link_config.speed;
 540                 cmd->duplex = p->link_config.duplex;
 541         } else {
 542                 cmd->speed = -1;
 543                 cmd->duplex = -1;
 544         }
 545
 546         cmd->port = (cmd->supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE;
 547         cmd->phy_address = p->phy->addr;
 548         cmd->transceiver = XCVR_EXTERNAL;
 549         cmd->autoneg = p->link_config.autoneg;
 550         cmd->maxtxpkt = 0;
 551         cmd->maxrxpkt = 0;
 552         return 0;
 553 }
 554
 555 static int speed_duplex_to_caps(int speed, int duplex)
 556 {
 557         int cap = 0;
 558
 559         switch (speed) {
 560         case SPEED_10:
 561                 if (duplex == DUPLEX_FULL)
 562                         cap = SUPPORTED_10baseT_Full;
 563                 else
 564                         cap = SUPPORTED_10baseT_Half;
 565                 break;
 566         case SPEED_100:
 567                 if (duplex == DUPLEX_FULL)
 568                         cap = SUPPORTED_100baseT_Full;
 569                 else
 570                         cap = SUPPORTED_100baseT_Half;
 571                 break;
 572         case SPEED_1000:
 573                 if (duplex == DUPLEX_FULL)
 574                         cap = SUPPORTED_1000baseT_Full;
 575                 else
 576                         cap = SUPPORTED_1000baseT_Half;
 577                 break;
 578         case SPEED_10000:
 579                 if (duplex == DUPLEX_FULL)
 580                         cap = SUPPORTED_10000baseT_Full;
 581         }
 582         return cap;
 583 }
 584
 585 #define ADVERTISED_MASK (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | \
 586                       ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | \
 587                       ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full | \
 588                       ADVERTISED_10000baseT_Full)
 589
 590 static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 591 {
 592         struct adapter *adapter = dev->priv;
 593         struct port_info *p = &adapter->port[dev->if_port];
 594         struct link_config *lc = &p->link_config;
 595
 596         if (!(lc->supported & SUPPORTED_Autoneg))
 597                 return -EOPNOTSUPP;             /* can't change speed/duplex */
 598
 599         if (cmd->autoneg == AUTONEG_DISABLE) {
 600                 int cap = speed_duplex_to_caps(cmd->speed, cmd->duplex);
 601
 602                 if (!(lc->supported & cap) || cmd->speed == SPEED_1000)
 603                         return -EINVAL;
 604                 lc->requested_speed = cmd->speed;
 605                 lc->requested_duplex = cmd->duplex;
 606                 lc->advertising = 0;
 607         } else {
 608                 cmd->advertising &= ADVERTISED_MASK;
 609                 if (cmd->advertising & (cmd->advertising - 1))
 610                         cmd->advertising = lc->supported;
 611                 cmd->advertising &= lc->supported;
 612                 if (!cmd->advertising)
 613                         return -EINVAL;
 614                 lc->requested_speed = SPEED_INVALID;
 615                 lc->requested_duplex = DUPLEX_INVALID;
 616                 lc->advertising = cmd->advertising | ADVERTISED_Autoneg;
 617         }
 618         lc->autoneg = cmd->autoneg;
 619         if (netif_running(dev))
 620                 t1_link_start(p->phy, p->mac, lc);
 621         return 0;
 622 }
 623
 624 static void get_pauseparam(struct net_device *dev,
 625                            struct ethtool_pauseparam *epause)
 626 {
 627         struct adapter *adapter = dev->priv;
 628         struct port_info *p = &adapter->port[dev->if_port];
 629
 630         epause->autoneg = (p->link_config.requested_fc & PAUSE_AUTONEG) != 0;
 631         epause->rx_pause = (p->link_config.fc & PAUSE_RX) != 0;
 632         epause->tx_pause = (p->link_config.fc & PAUSE_TX) != 0;
 633 }
 634
 635 static int set_pauseparam(struct net_device *dev,
 636                           struct ethtool_pauseparam *epause)
 637 {
 638         struct adapter *adapter = dev->priv;
 639         struct port_info *p = &adapter->port[dev->if_port];
 640         struct link_config *lc = &p->link_config;
 641
 642         if (epause->autoneg == AUTONEG_DISABLE)
 643                 lc->requested_fc = 0;
 644         else if (lc->supported & SUPPORTED_Autoneg)
 645                 lc->requested_fc = PAUSE_AUTONEG;
 646         else
 647                 return -EINVAL;
 648
 649         if (epause->rx_pause)
 650                 lc->requested_fc |= PAUSE_RX;
 651         if (epause->tx_pause)
 652                 lc->requested_fc |= PAUSE_TX;
 653         if (lc->autoneg == AUTONEG_ENABLE) {
 654                 if (netif_running(dev))
 655                         t1_link_start(p->phy, p->mac, lc);
 656         } else {
 657                 lc->fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
 658                 if (netif_running(dev))
 659                         p->mac->ops->set_speed_duplex_fc(p->mac, -1, -1,
 660                                                          lc->fc);
 661         }
 662         return 0;
 663 }
 664
 665 static u32 get_rx_csum(struct net_device *dev)
 666 {
 667         struct adapter *adapter = dev->priv;
 668
 669         return (adapter->flags & RX_CSUM_ENABLED) != 0;
 670 }
 671
 672 static int set_rx_csum(struct net_device *dev, u32 data)
 673 {
 674         struct adapter *adapter = dev->priv;
 675
 676         if (data)
 677                 adapter->flags |= RX_CSUM_ENABLED;
 678         else
 679                 adapter->flags &= ~RX_CSUM_ENABLED;
 680         return 0;
 681 }
 682
 683 static int set_tso(struct net_device *dev, u32 value)
 684 {
 685         struct adapter *adapter = dev->priv;
 686
 687         if (!(adapter->flags & TSO_CAPABLE))
 688                 return value ? -EOPNOTSUPP : 0;
 689         return ethtool_op_set_tso(dev, value);
 690 }
 691
 692 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
 693 {
 694         struct adapter *adapter = dev->priv;
 695         int jumbo_fl = t1_is_T1B(adapter) ? 1 : 0;
 696
 697         e->rx_max_pending = MAX_RX_BUFFERS;
 698         e->rx_mini_max_pending = 0;
 699         e->rx_jumbo_max_pending = MAX_RX_JUMBO_BUFFERS;
 700         e->tx_max_pending = MAX_CMDQ_ENTRIES;
 701
 702         e->rx_pending = adapter->params.sge.freelQ_size[!jumbo_fl];
 703         e->rx_mini_pending = 0;
 704         e->rx_jumbo_pending = adapter->params.sge.freelQ_size[jumbo_fl];
 705         e->tx_pending = adapter->params.sge.cmdQ_size[0];
 706 }
 707
 708 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
 709 {
 710         struct adapter *adapter = dev->priv;
 711         int jumbo_fl = t1_is_T1B(adapter) ? 1 : 0;
 712
 713         if (e->rx_pending > MAX_RX_BUFFERS || e->rx_mini_pending ||
 714             e->rx_jumbo_pending > MAX_RX_JUMBO_BUFFERS ||
 715             e->tx_pending > MAX_CMDQ_ENTRIES ||
 716             e->rx_pending < MIN_FL_ENTRIES ||
 717             e->rx_jumbo_pending < MIN_FL_ENTRIES ||
 718             e->tx_pending < (adapter->params.nports + 1) * (MAX_SKB_FRAGS + 1))
 719                 return -EINVAL;
 720
 721         if (adapter->flags & FULL_INIT_DONE)
 722                 return -EBUSY;
 723
 724         adapter->params.sge.freelQ_size[!jumbo_fl] = e->rx_pending;
 725         adapter->params.sge.freelQ_size[jumbo_fl] = e->rx_jumbo_pending;
 726         adapter->params.sge.cmdQ_size[0] = e->tx_pending;
 727         adapter->params.sge.cmdQ_size[1] = e->tx_pending > MAX_CMDQ1_ENTRIES ?
 728                 MAX_CMDQ1_ENTRIES : e->tx_pending;
 729         return 0;
 730 }
 731
 732 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
 733 {
 734         struct adapter *adapter = dev->priv;
 735
 736         adapter->params.sge.rx_coalesce_usecs = c->rx_coalesce_usecs;
 737         adapter->params.sge.coalesce_enable = c->use_adaptive_rx_coalesce;
 738         adapter->params.sge.sample_interval_usecs = c->rate_sample_interval;
 739         t1_sge_set_coalesce_params(adapter->sge, &adapter->params.sge);
 740         return 0;
 741 }
 742
 743 static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
 744 {
 745         struct adapter *adapter = dev->priv;
 746
 747         c->rx_coalesce_usecs = adapter->params.sge.rx_coalesce_usecs;
 748         c->rate_sample_interval = adapter->params.sge.sample_interval_usecs;
 749         c->use_adaptive_rx_coalesce = adapter->params.sge.coalesce_enable;
 750         return 0;
 751 }
 752
 753 static int get_eeprom_len(struct net_device *dev)
 754 {
 755         struct adapter *adapter = dev->priv;
 756
 757         return t1_is_asic(adapter) ? EEPROM_SIZE : 0;
 758 }
 759
 760 #define EEPROM_MAGIC(ap) \
 761         (PCI_VENDOR_ID_CHELSIO | ((ap)->params.chip_version << 16))
 762
 763 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e,
 764                       u8 *data)
 765 {
 766         int i;
 767         u8 buf[EEPROM_SIZE] __attribute__((aligned(4)));
 768         struct adapter *adapter = dev->priv;
 769
 770         e->magic = EEPROM_MAGIC(adapter);
 771         for (i = e->offset & ~3; i < e->offset + e->len; i += sizeof(u32))
 772                 t1_seeprom_read(adapter, i, (u32 *)&buf[i]);
 773         memcpy(data, buf + e->offset, e->len);
 774         return 0;
 775 }
 776
 777 static const struct ethtool_ops t1_ethtool_ops = {
 778         .get_settings      = get_settings,
 779         .set_settings      = set_settings,
 780         .get_drvinfo       = get_drvinfo,
 781         .get_msglevel      = get_msglevel,
 782         .set_msglevel      = set_msglevel,
 783         .get_ringparam     = get_sge_param,
 784         .set_ringparam     = set_sge_param,
 785         .get_coalesce      = get_coalesce,
 786         .set_coalesce      = set_coalesce,
 787         .get_eeprom_len    = get_eeprom_len,
 788         .get_eeprom        = get_eeprom,
 789         .get_pauseparam    = get_pauseparam,
 790         .set_pauseparam    = set_pauseparam,
 791         .get_rx_csum       = get_rx_csum,
 792         .set_rx_csum       = set_rx_csum,
 793         .get_tx_csum       = ethtool_op_get_tx_csum,
 794         .set_tx_csum       = ethtool_op_set_tx_csum,
 795         .get_sg            = ethtool_op_get_sg,
 796         .set_sg            = ethtool_op_set_sg,
 797         .get_link          = ethtool_op_get_link,
 798         .get_strings       = get_strings,
 799         .get_stats_count   = get_stats_count,
 800         .get_ethtool_stats = get_stats,
 801         .get_regs_len      = get_regs_len,
 802         .get_regs          = get_regs,
 803         .get_tso           = ethtool_op_get_tso,
 804         .set_tso           = set_tso,
 805 };
 806
 807 static int t1_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
 808 {
 809         struct adapter *adapter = dev->priv;
 810         struct mii_ioctl_data *data = if_mii(req);
 811
 812         switch (cmd) {
 813         case SIOCGMIIPHY:
 814                 data->phy_id = adapter->port[dev->if_port].phy->addr;
 815                 /* FALLTHRU */
 816         case SIOCGMIIREG: {
 817                 struct cphy *phy = adapter->port[dev->if_port].phy;
 818                 u32 val;
 819
 820                 if (!phy->mdio_read)
 821                         return -EOPNOTSUPP;
 822                 phy->mdio_read(adapter, data->phy_id, 0, data->reg_num & 0x1f,
 823                                &val);
 824                 data->val_out = val;
 825                 break;
 826         }
 827         case SIOCSMIIREG: {
 828                 struct cphy *phy = adapter->port[dev->if_port].phy;
 829
 830                 if (!capable(CAP_NET_ADMIN))
 831                     return -EPERM;
 832                 if (!phy->mdio_write)
 833                         return -EOPNOTSUPP;
 834                 phy->mdio_write(adapter, data->phy_id, 0, data->reg_num & 0x1f,
 835                                 data->val_in);
 836                 break;
 837         }
 838
 839         default:
 840                 return -EOPNOTSUPP;
 841         }
 842         return 0;
 843 }
 844
 845 static int t1_change_mtu(struct net_device *dev, int new_mtu)
 846 {
 847         int ret;
 848         struct adapter *adapter = dev->priv;
 849         struct cmac *mac = adapter->port[dev->if_port].mac;
 850
 851         if (!mac->ops->set_mtu)
 852                 return -EOPNOTSUPP;
 853         if (new_mtu < 68)
 854                 return -EINVAL;
 855         if ((ret = mac->ops->set_mtu(mac, new_mtu)))
 856                 return ret;
 857         dev->mtu = new_mtu;
 858         return 0;
 859 }
 860
 861 static int t1_set_mac_addr(struct net_device *dev, void *p)
 862 {
 863         struct adapter *adapter = dev->priv;
 864         struct cmac *mac = adapter->port[dev->if_port].mac;
 865         struct sockaddr *addr = p;
 866
 867         if (!mac->ops->macaddress_set)
 868                 return -EOPNOTSUPP;
 869
 870         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 871         mac->ops->macaddress_set(mac, dev->dev_addr);
 872         return 0;
 873 }
 874
 875 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
 876 static void vlan_rx_register(struct net_device *dev,
 877                                    struct vlan_group *grp)
 878 {
 879         struct adapter *adapter = dev->priv;
 880
 881         spin_lock_irq(&adapter->async_lock);
 882         adapter->vlan_grp = grp;
 883         t1_set_vlan_accel(adapter, grp != NULL);
 884         spin_unlock_irq(&adapter->async_lock);
 885 }
 886 #endif
 887
 888 #ifdef CONFIG_NET_POLL_CONTROLLER
 889 static void t1_netpoll(struct net_device *dev)
 890 {
 891         unsigned long flags;
 892         struct adapter *adapter = dev->priv;
 893
 894         local_irq_save(flags);
 895         t1_interrupt(adapter->pdev->irq, adapter);
 896         local_irq_restore(flags);
 897 }
 898 #endif
 899
 900 /*
 901  * Periodic accumulation of MAC statistics.  This is used only if the MAC
 902  * does not have any other way to prevent stats counter overflow.
 903  */
 904 static void mac_stats_task(struct work_struct *work)
 905 {
 906         int i;
 907         struct adapter *adapter =
 908                 container_of(work, struct adapter, stats_update_task.work);
 909
 910         for_each_port(adapter, i) {
 911                 struct port_info *p = &adapter->port[i];
 912
 913                 if (netif_running(p->dev))
 914                         p->mac->ops->statistics_update(p->mac,
 915                                                        MAC_STATS_UPDATE_FAST);
 916         }
 917
 918         /* Schedule the next statistics update if any port is active. */
 919         spin_lock(&adapter->work_lock);
 920         if (adapter->open_device_map & PORT_MASK)
 921                 schedule_mac_stats_update(adapter,
 922                                           adapter->params.stats_update_period);
 923         spin_unlock(&adapter->work_lock);
 924 }
 925
 926 /*
 927  * Processes elmer0 external interrupts in process context.
 928  */
 929 static void ext_intr_task(struct work_struct *work)
 930 {
 931         struct adapter *adapter =
 932                 container_of(work, struct adapter, ext_intr_handler_task);
 933
 934         t1_elmer0_ext_intr_handler(adapter);
 935
 936         /* Now reenable external interrupts */
 937         spin_lock_irq(&adapter->async_lock);
 938         adapter->slow_intr_mask |= F_PL_INTR_EXT;
 939         writel(F_PL_INTR_EXT, adapter->regs + A_PL_CAUSE);
 940         writel(adapter->slow_intr_mask | F_PL_INTR_SGE_DATA,
 941                    adapter->regs + A_PL_ENABLE);
 942         spin_unlock_irq(&adapter->async_lock);
 943 }
 944
 945 /*
 946  * Interrupt-context handler for elmer0 external interrupts.
 947  */
 948 void t1_elmer0_ext_intr(struct adapter *adapter)
 949 {
 950         /*
 951          * Schedule a task to handle external interrupts as we require
 952          * a process context.  We disable EXT interrupts in the interim
 953          * and let the task reenable them when it's done.
 954          */
 955         adapter->slow_intr_mask &= ~F_PL_INTR_EXT;
 956         writel(adapter->slow_intr_mask | F_PL_INTR_SGE_DATA,
 957                    adapter->regs + A_PL_ENABLE);
 958         schedule_work(&adapter->ext_intr_handler_task);
 959 }
 960
 961 void t1_fatal_err(struct adapter *adapter)
 962 {
 963         if (adapter->flags & FULL_INIT_DONE) {
 964                 t1_sge_stop(adapter->sge);
 965                 t1_interrupts_disable(adapter);
 966         }
 967         CH_ALERT("%s: encountered fatal error, operation suspended\n",
 968                  adapter->name);
 969 }
 970
 971 static int __devinit init_one(struct pci_dev *pdev,
 972                               const struct pci_device_id *ent)
 973 {
 974         static int version_printed;
 975
 976         int i, err, pci_using_dac = 0;
 977         unsigned long mmio_start, mmio_len;
 978         const struct board_info *bi;
 979         struct adapter *adapter = NULL;
 980         struct port_info *pi;
 981
 982         if (!version_printed) {
 983                 printk(KERN_INFO "%s - version %s\n", DRV_DESCRIPTION,
 984                        DRV_VERSION);
 985                 ++version_printed;
 986         }
 987
 988         err = pci_enable_device(pdev);
 989         if (err)
 990                 return err;
 991
 992         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
 993                 CH_ERR("%s: cannot find PCI device memory base address\n",
 994                        pci_name(pdev));
 995                 err = -ENODEV;
 996                 goto out_disable_pdev;
 997         }
 998
 999         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1000                 pci_using_dac = 1;
1001
1002                 if (pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) {
1003                         CH_ERR("%s: unable to obtain 64-bit DMA for"
1004                                "consistent allocations\n", pci_name(pdev));
1005                         err = -ENODEV;
1006                         goto out_disable_pdev;
1007                 }
1008
1009         } else if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) != 0) {
1010                 CH_ERR("%s: no usable DMA configuration\n", pci_name(pdev));
1011                 goto out_disable_pdev;
1012         }
1013
1014         err = pci_request_regions(pdev, DRV_NAME);
1015         if (err) {
1016                 CH_ERR("%s: cannot obtain PCI resources\n", pci_name(pdev));
1017                 goto out_disable_pdev;
1018         }
1019
1020         pci_set_master(pdev);
1021
1022         mmio_start = pci_resource_start(pdev, 0);
1023         mmio_len = pci_resource_len(pdev, 0);
1024         bi = t1_get_board_info(ent->driver_data);
1025
1026         for (i = 0; i < bi->port_number; ++i) {
1027                 struct net_device *netdev;
1028
1029                 netdev = alloc_etherdev(adapter ? 0 : sizeof(*adapter));
1030                 if (!netdev) {
1031                         err = -ENOMEM;
1032                         goto out_free_dev;
1033                 }
1034
1035                 SET_MODULE_OWNER(netdev);
1036                 SET_NETDEV_DEV(netdev, &pdev->dev);
1037
1038                 if (!adapter) {
1039                         adapter = netdev->priv;
1040                         adapter->pdev = pdev;
1041                         adapter->port[0].dev = netdev;  /* so we don't leak it */
1042
1043                         adapter->regs = ioremap(mmio_start, mmio_len);
1044                         if (!adapter->regs) {
1045                                 CH_ERR("%s: cannot map device registers\n",
1046                                        pci_name(pdev));
1047                                 err = -ENOMEM;
1048                                 goto out_free_dev;
1049                         }
1050
1051                         if (t1_get_board_rev(adapter, bi, &adapter->params)) {
1052                                 err = -ENODEV;    /* Can't handle this chip rev */
1053                                 goto out_free_dev;
1054                         }
1055
1056                         adapter->name = pci_name(pdev);
1057                         adapter->msg_enable = dflt_msg_enable;
1058                         adapter->mmio_len = mmio_len;
1059
1060                         spin_lock_init(&adapter->tpi_lock);
1061                         spin_lock_init(&adapter->work_lock);
1062                         spin_lock_init(&adapter->async_lock);
1063                         spin_lock_init(&adapter->mac_lock);
1064
1065                         INIT_WORK(&adapter->ext_intr_handler_task,
1066                                   ext_intr_task);
1067                         INIT_DELAYED_WORK(&adapter->stats_update_task,
1068                                           mac_stats_task);
1069
1070                         pci_set_drvdata(pdev, netdev);
1071                 }
1072
1073                 pi = &adapter->port[i];
1074                 pi->dev = netdev;
1075                 netif_carrier_off(netdev);
1076                 netdev->irq = pdev->irq;
1077                 netdev->if_port = i;
1078                 netdev->mem_start = mmio_start;
1079                 netdev->mem_end = mmio_start + mmio_len - 1;
1080                 netdev->priv = adapter;
1081                 netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
1082                 netdev->features |= NETIF_F_LLTX;
1083
1084                 adapter->flags |= RX_CSUM_ENABLED | TCP_CSUM_CAPABLE;
1085                 if (pci_using_dac)
1086                         netdev->features |= NETIF_F_HIGHDMA;
1087                 if (vlan_tso_capable(adapter)) {
1088 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1089                         adapter->flags |= VLAN_ACCEL_CAPABLE;
1090                         netdev->features |=
1091                                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1092                         netdev->vlan_rx_register = vlan_rx_register;
1093 #endif
1094
1095                         /* T204: disable TSO */
1096                         if (!(is_T2(adapter)) || bi->port_number != 4) {
1097                                 adapter->flags |= TSO_CAPABLE;
1098                                 netdev->features |= NETIF_F_TSO;
1099                         }
1100                 }
1101
1102                 netdev->open = cxgb_open;
1103                 netdev->stop = cxgb_close;
1104                 netdev->hard_start_xmit = t1_start_xmit;
1105                 netdev->hard_header_len += (adapter->flags & TSO_CAPABLE) ?
1106                         sizeof(struct cpl_tx_pkt_lso) : sizeof(struct cpl_tx_pkt);
1107                 netdev->get_stats = t1_get_stats;
1108                 netdev->set_multicast_list = t1_set_rxmode;
1109                 netdev->do_ioctl = t1_ioctl;
1110                 netdev->change_mtu = t1_change_mtu;
1111                 netdev->set_mac_address = t1_set_mac_addr;
1112 #ifdef CONFIG_NET_POLL_CONTROLLER
1113                 netdev->poll_controller = t1_netpoll;
1114 #endif
1115 #ifdef CONFIG_CHELSIO_T1_NAPI
1116                 netdev->weight = 64;
1117                 netdev->poll = t1_poll;
1118 #endif
1119
1120                 SET_ETHTOOL_OPS(netdev, &t1_ethtool_ops);
1121         }
1122
1123         if (t1_init_sw_modules(adapter, bi) < 0) {
1124                 err = -ENODEV;
1125                 goto out_free_dev;
1126         }
1127
1128         /*
1129          * The card is now ready to go.  If any errors occur during device
1130          * registration we do not fail the whole card but rather proceed only
1131          * with the ports we manage to register successfully.  However we must
1132          * register at least one net device.
1133          */
1134         for (i = 0; i < bi->port_number; ++i) {
1135                 err = register_netdev(adapter->port[i].dev);
1136                 if (err)
1137                         CH_WARN("%s: cannot register net device %s, skipping\n",
1138                                 pci_name(pdev), adapter->port[i].dev->name);
1139                 else {
1140                         /*
1141                          * Change the name we use for messages to the name of
1142                          * the first successfully registered interface.
1143                          */
1144                         if (!adapter->registered_device_map)
1145                                 adapter->name = adapter->port[i].dev->name;
1146
1147                         __set_bit(i, &adapter->registered_device_map);
1148                 }
1149         }
1150         if (!adapter->registered_device_map) {
1151                 CH_ERR("%s: could not register any net devices\n",
1152                        pci_name(pdev));
1153                 goto out_release_adapter_res;
1154         }
1155
1156         printk(KERN_INFO "%s: %s (rev %d), %s %dMHz/%d-bit\n", adapter->name,
1157                bi->desc, adapter->params.chip_revision,
1158                adapter->params.pci.is_pcix ? "PCIX" : "PCI",
1159                adapter->params.pci.speed, adapter->params.pci.width);
1160
1161         /*
1162          * Set the T1B ASIC and memory clocks.
1163          */
1164         if (t1powersave)
1165                 adapter->t1powersave = LCLOCK;  /* HW default is powersave mode. */
1166         else
1167                 adapter->t1powersave = HCLOCK;
1168         if (t1_is_T1B(adapter))
1169                 t1_clock(adapter, t1powersave);
1170
1171         return 0;
1172
1173 out_release_adapter_res:
1174         t1_free_sw_modules(adapter);
1175 out_free_dev:
1176         if (adapter) {
1177                 if (adapter->regs)
1178                         iounmap(adapter->regs);
1179                 for (i = bi->port_number - 1; i >= 0; --i)
1180                         if (adapter->port[i].dev)
1181                                 free_netdev(adapter->port[i].dev);
1182         }
1183         pci_release_regions(pdev);
1184 out_disable_pdev:
1185         pci_disable_device(pdev);
1186         pci_set_drvdata(pdev, NULL);
1187         return err;
1188 }
1189
1190 static void bit_bang(struct adapter *adapter, int bitdata, int nbits)
1191 {
1192         int data;
1193         int i;
1194         u32 val;
1195
1196         enum {
1197                 S_CLOCK = 1 << 3,
1198                 S_DATA = 1 << 4
1199         };
1200
1201         for (i = (nbits - 1); i > -1; i--) {
1202
1203                 udelay(50);
1204
1205                 data = ((bitdata >> i) & 0x1);
1206                 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1207
1208                 if (data)
1209                         val |= S_DATA;
1210                 else
1211                         val &= ~S_DATA;
1212
1213                 udelay(50);
1214
1215                 /* Set SCLOCK low */
1216                 val &= ~S_CLOCK;
1217                 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1218
1219                 udelay(50);
1220
1221                 /* Write SCLOCK high */
1222                 val |= S_CLOCK;
1223                 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1224
1225         }
1226 }
1227
1228 static int t1_clock(struct adapter *adapter, int mode)
1229 {
1230         u32 val;
1231         int M_CORE_VAL;
1232         int M_MEM_VAL;
1233
1234         enum {
1235                 M_CORE_BITS     = 9,
1236                 T_CORE_VAL      = 0,
1237                 T_CORE_BITS     = 2,
1238                 N_CORE_VAL      = 0,
1239                 N_CORE_BITS     = 2,
1240                 M_MEM_BITS      = 9,
1241                 T_MEM_VAL       = 0,
1242                 T_MEM_BITS      = 2,
1243                 N_MEM_VAL       = 0,
1244                 N_MEM_BITS      = 2,
1245                 NP_LOAD         = 1 << 17,
1246                 S_LOAD_MEM      = 1 << 5,
1247                 S_LOAD_CORE     = 1 << 6,
1248                 S_CLOCK         = 1 << 3
1249         };
1250
1251         if (!t1_is_T1B(adapter))
1252                 return -ENODEV; /* Can't re-clock this chip. */
1253
1254         if (mode & 2)
1255                 return 0;       /* show current mode. */
1256
1257         if ((adapter->t1powersave & 1) == (mode & 1))
1258                 return -EALREADY;       /* ASIC already running in mode. */
1259
1260         if ((mode & 1) == HCLOCK) {
1261                 M_CORE_VAL = 0x14;
1262                 M_MEM_VAL = 0x18;
1263                 adapter->t1powersave = HCLOCK;  /* overclock */
1264         } else {
1265                 M_CORE_VAL = 0xe;
1266                 M_MEM_VAL = 0x10;
1267                 adapter->t1powersave = LCLOCK;  /* underclock */
1268         }
1269
1270         /* Don't interrupt this serial stream! */
1271         spin_lock(&adapter->tpi_lock);
1272
1273         /* Initialize for ASIC core */
1274         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1275         val |= NP_LOAD;
1276         udelay(50);
1277         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1278         udelay(50);
1279         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1280         val &= ~S_LOAD_CORE;
1281         val &= ~S_CLOCK;
1282         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1283         udelay(50);
1284
1285         /* Serial program the ASIC clock synthesizer */
1286         bit_bang(adapter, T_CORE_VAL, T_CORE_BITS);
1287         bit_bang(adapter, N_CORE_VAL, N_CORE_BITS);
1288         bit_bang(adapter, M_CORE_VAL, M_CORE_BITS);
1289         udelay(50);
1290
1291         /* Finish ASIC core */
1292         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1293         val |= S_LOAD_CORE;
1294         udelay(50);
1295         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1296         udelay(50);
1297         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1298         val &= ~S_LOAD_CORE;
1299         udelay(50);
1300         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1301         udelay(50);
1302
1303         /* Initialize for memory */
1304         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1305         val |= NP_LOAD;
1306         udelay(50);
1307         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1308         udelay(50);
1309         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1310         val &= ~S_LOAD_MEM;
1311         val &= ~S_CLOCK;
1312         udelay(50);
1313         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1314         udelay(50);
1315
1316         /* Serial program the memory clock synthesizer */
1317         bit_bang(adapter, T_MEM_VAL, T_MEM_BITS);
1318         bit_bang(adapter, N_MEM_VAL, N_MEM_BITS);
1319         bit_bang(adapter, M_MEM_VAL, M_MEM_BITS);
1320         udelay(50);
1321
1322         /* Finish memory */
1323         __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1324         val |= S_LOAD_MEM;
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_MEM;
1330         udelay(50);
1331         __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1332
1333         spin_unlock(&adapter->tpi_lock);
1334
1335         return 0;
1336 }
1337
1338 static inline void t1_sw_reset(struct pci_dev *pdev)
1339 {
1340         pci_write_config_dword(pdev, A_PCICFG_PM_CSR, 3);
1341         pci_write_config_dword(pdev, A_PCICFG_PM_CSR, 0);
1342 }
1343
1344 static void __devexit remove_one(struct pci_dev *pdev)
1345 {
1346         struct net_device *dev = pci_get_drvdata(pdev);
1347         struct adapter *adapter = dev->priv;
1348         int i;
1349
1350         for_each_port(adapter, i) {
1351                 if (test_bit(i, &adapter->registered_device_map))
1352                         unregister_netdev(adapter->port[i].dev);
1353         }
1354
1355         t1_free_sw_modules(adapter);
1356         iounmap(adapter->regs);
1357
1358         while (--i >= 0) {
1359                 if (adapter->port[i].dev)
1360                         free_netdev(adapter->port[i].dev);
1361         }
1362
1363         pci_release_regions(pdev);
1364         pci_disable_device(pdev);
1365         pci_set_drvdata(pdev, NULL);
1366         t1_sw_reset(pdev);
1367 }
1368
1369 static struct pci_driver driver = {
1370         .name     = DRV_NAME,
1371         .id_table = t1_pci_tbl,
1372         .probe    = init_one,
1373         .remove   = __devexit_p(remove_one),
1374 };
1375
1376 static int __init t1_init_module(void)
1377 {
1378         return pci_register_driver(&driver);
1379 }
1380
1381 static void __exit t1_cleanup_module(void)
1382 {
1383         pci_unregister_driver(&driver);
1384 }
1385
1386 module_init(t1_init_module);
1387 module_exit(t1_cleanup_module);