git.oblomov.eu Git - linux-2.6/blob - drivers/net/cxgb3/cxgb3_main.c

   1 /*
   2  * Copyright (c) 2003-2008 Chelsio, Inc. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32 #include <linux/module.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/init.h>
  35 #include <linux/pci.h>
  36 #include <linux/dma-mapping.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/if_vlan.h>
  40 #include <linux/mdio.h>
  41 #include <linux/sockios.h>
  42 #include <linux/workqueue.h>
  43 #include <linux/proc_fs.h>
  44 #include <linux/rtnetlink.h>
  45 #include <linux/firmware.h>
  46 #include <linux/log2.h>
  47 #include <asm/uaccess.h>
  48
  49 #include "common.h"
  50 #include "cxgb3_ioctl.h"
  51 #include "regs.h"
  52 #include "cxgb3_offload.h"
  53 #include "version.h"
  54
  55 #include "cxgb3_ctl_defs.h"
  56 #include "t3_cpl.h"
  57 #include "firmware_exports.h"
  58
  59 enum {
  60         MAX_TXQ_ENTRIES = 16384,
  61         MAX_CTRL_TXQ_ENTRIES = 1024,
  62         MAX_RSPQ_ENTRIES = 16384,
  63         MAX_RX_BUFFERS = 16384,
  64         MAX_RX_JUMBO_BUFFERS = 16384,
  65         MIN_TXQ_ENTRIES = 4,
  66         MIN_CTRL_TXQ_ENTRIES = 4,
  67         MIN_RSPQ_ENTRIES = 32,
  68         MIN_FL_ENTRIES = 32
  69 };
  70
  71 #define PORT_MASK ((1 << MAX_NPORTS) - 1)
  72
  73 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
  74                          NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
  75                          NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
  76
  77 #define EEPROM_MAGIC 0x38E2F10C
  78
  79 #define CH_DEVICE(devid, idx) \
  80         { PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, PCI_ANY_ID, 0, 0, idx }
  81
  82 static const struct pci_device_id cxgb3_pci_tbl[] = {
  83         CH_DEVICE(0x20, 0),     /* PE9000 */
  84         CH_DEVICE(0x21, 1),     /* T302E */
  85         CH_DEVICE(0x22, 2),     /* T310E */
  86         CH_DEVICE(0x23, 3),     /* T320X */
  87         CH_DEVICE(0x24, 1),     /* T302X */
  88         CH_DEVICE(0x25, 3),     /* T320E */
  89         CH_DEVICE(0x26, 2),     /* T310X */
  90         CH_DEVICE(0x30, 2),     /* T3B10 */
  91         CH_DEVICE(0x31, 3),     /* T3B20 */
  92         CH_DEVICE(0x32, 1),     /* T3B02 */
  93         CH_DEVICE(0x35, 6),     /* T3C20-derived T3C10 */
  94         CH_DEVICE(0x36, 3),     /* S320E-CR */
  95         CH_DEVICE(0x37, 7),     /* N320E-G2 */
  96         {0,}
  97 };
  98
  99 MODULE_DESCRIPTION(DRV_DESC);
 100 MODULE_AUTHOR("Chelsio Communications");
 101 MODULE_LICENSE("Dual BSD/GPL");
 102 MODULE_VERSION(DRV_VERSION);
 103 MODULE_DEVICE_TABLE(pci, cxgb3_pci_tbl);
 104
 105 static int dflt_msg_enable = DFLT_MSG_ENABLE;
 106
 107 module_param(dflt_msg_enable, int, 0644);
 108 MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T3 default message enable bitmap");
 109
 110 /*
 111  * The driver uses the best interrupt scheme available on a platform in the
 112  * order MSI-X, MSI, legacy pin interrupts.  This parameter determines which
 113  * of these schemes the driver may consider as follows:
 114  *
 115  * msi = 2: choose from among all three options
 116  * msi = 1: only consider MSI and pin interrupts
 117  * msi = 0: force pin interrupts
 118  */
 119 static int msi = 2;
 120
 121 module_param(msi, int, 0644);
 122 MODULE_PARM_DESC(msi, "whether to use MSI or MSI-X");
 123
 124 /*
 125  * The driver enables offload as a default.
 126  * To disable it, use ofld_disable = 1.
 127  */
 128
 129 static int ofld_disable = 0;
 130
 131 module_param(ofld_disable, int, 0644);
 132 MODULE_PARM_DESC(ofld_disable, "whether to enable offload at init time or not");
 133
 134 /*
 135  * We have work elements that we need to cancel when an interface is taken
 136  * down.  Normally the work elements would be executed by keventd but that
 137  * can deadlock because of linkwatch.  If our close method takes the rtnl
 138  * lock and linkwatch is ahead of our work elements in keventd, linkwatch
 139  * will block keventd as it needs the rtnl lock, and we'll deadlock waiting
 140  * for our work to complete.  Get our own work queue to solve this.
 141  */
 142 static struct workqueue_struct *cxgb3_wq;
 143
 144 /**
 145  *      link_report - show link status and link speed/duplex
 146  *      @p: the port whose settings are to be reported
 147  *
 148  *      Shows the link status, speed, and duplex of a port.
 149  */
 150 static void link_report(struct net_device *dev)
 151 {
 152         if (!netif_carrier_ok(dev))
 153                 printk(KERN_INFO "%s: link down\n", dev->name);
 154         else {
 155                 const char *s = "10Mbps";
 156                 const struct port_info *p = netdev_priv(dev);
 157
 158                 switch (p->link_config.speed) {
 159                 case SPEED_10000:
 160                         s = "10Gbps";
 161                         break;
 162                 case SPEED_1000:
 163                         s = "1000Mbps";
 164                         break;
 165                 case SPEED_100:
 166                         s = "100Mbps";
 167                         break;
 168                 }
 169
 170                 printk(KERN_INFO "%s: link up, %s, %s-duplex\n", dev->name, s,
 171                        p->link_config.duplex == DUPLEX_FULL ? "full" : "half");
 172         }
 173 }
 174
 175 void t3_os_link_fault(struct adapter *adap, int port_id, int state)
 176 {
 177         struct net_device *dev = adap->port[port_id];
 178         struct port_info *pi = netdev_priv(dev);
 179
 180         if (state == netif_carrier_ok(dev))
 181                 return;
 182
 183         if (state) {
 184                 struct cmac *mac = &pi->mac;
 185
 186                 netif_carrier_on(dev);
 187
 188                 /* Clear local faults */
 189                 t3_xgm_intr_disable(adap, pi->port_id);
 190                 t3_read_reg(adap, A_XGM_INT_STATUS +
 191                                     pi->mac.offset);
 192                 t3_write_reg(adap,
 193                              A_XGM_INT_CAUSE + pi->mac.offset,
 194                              F_XGM_INT);
 195
 196                 t3_set_reg_field(adap,
 197                                  A_XGM_INT_ENABLE +
 198                                  pi->mac.offset,
 199                                  F_XGM_INT, F_XGM_INT);
 200                 t3_xgm_intr_enable(adap, pi->port_id);
 201
 202                 t3_mac_enable(mac, MAC_DIRECTION_TX);
 203         } else
 204                 netif_carrier_off(dev);
 205
 206         link_report(dev);
 207 }
 208
 209 /**
 210  *      t3_os_link_changed - handle link status changes
 211  *      @adapter: the adapter associated with the link change
 212  *      @port_id: the port index whose limk status has changed
 213  *      @link_stat: the new status of the link
 214  *      @speed: the new speed setting
 215  *      @duplex: the new duplex setting
 216  *      @pause: the new flow-control setting
 217  *
 218  *      This is the OS-dependent handler for link status changes.  The OS
 219  *      neutral handler takes care of most of the processing for these events,
 220  *      then calls this handler for any OS-specific processing.
 221  */
 222 void t3_os_link_changed(struct adapter *adapter, int port_id, int link_stat,
 223                         int speed, int duplex, int pause)
 224 {
 225         struct net_device *dev = adapter->port[port_id];
 226         struct port_info *pi = netdev_priv(dev);
 227         struct cmac *mac = &pi->mac;
 228
 229         /* Skip changes from disabled ports. */
 230         if (!netif_running(dev))
 231                 return;
 232
 233         if (link_stat != netif_carrier_ok(dev)) {
 234                 if (link_stat) {
 235                         t3_mac_enable(mac, MAC_DIRECTION_RX);
 236
 237                         /* Clear local faults */
 238                         t3_xgm_intr_disable(adapter, pi->port_id);
 239                         t3_read_reg(adapter, A_XGM_INT_STATUS +
 240                                     pi->mac.offset);
 241                         t3_write_reg(adapter,
 242                                      A_XGM_INT_CAUSE + pi->mac.offset,
 243                                      F_XGM_INT);
 244
 245                         t3_set_reg_field(adapter,
 246                                          A_XGM_INT_ENABLE + pi->mac.offset,
 247                                          F_XGM_INT, F_XGM_INT);
 248                         t3_xgm_intr_enable(adapter, pi->port_id);
 249
 250                         netif_carrier_on(dev);
 251                 } else {
 252                         netif_carrier_off(dev);
 253
 254                         t3_xgm_intr_disable(adapter, pi->port_id);
 255                         t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset);
 256                         t3_set_reg_field(adapter,
 257                                          A_XGM_INT_ENABLE + pi->mac.offset,
 258                                          F_XGM_INT, 0);
 259
 260                         if (is_10G(adapter))
 261                                 pi->phy.ops->power_down(&pi->phy, 1);
 262
 263                         t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset);
 264                         t3_mac_disable(mac, MAC_DIRECTION_RX);
 265                         t3_link_start(&pi->phy, mac, &pi->link_config);
 266                 }
 267
 268                 link_report(dev);
 269         }
 270 }
 271
 272 /**
 273  *      t3_os_phymod_changed - handle PHY module changes
 274  *      @phy: the PHY reporting the module change
 275  *      @mod_type: new module type
 276  *
 277  *      This is the OS-dependent handler for PHY module changes.  It is
 278  *      invoked when a PHY module is removed or inserted for any OS-specific
 279  *      processing.
 280  */
 281 void t3_os_phymod_changed(struct adapter *adap, int port_id)
 282 {
 283         static const char *mod_str[] = {
 284                 NULL, "SR", "LR", "LRM", "TWINAX", "TWINAX", "unknown"
 285         };
 286
 287         const struct net_device *dev = adap->port[port_id];
 288         const struct port_info *pi = netdev_priv(dev);
 289
 290         if (pi->phy.modtype == phy_modtype_none)
 291                 printk(KERN_INFO "%s: PHY module unplugged\n", dev->name);
 292         else
 293                 printk(KERN_INFO "%s: %s PHY module inserted\n", dev->name,
 294                        mod_str[pi->phy.modtype]);
 295 }
 296
 297 static void cxgb_set_rxmode(struct net_device *dev)
 298 {
 299         struct t3_rx_mode rm;
 300         struct port_info *pi = netdev_priv(dev);
 301
 302         init_rx_mode(&rm, dev, dev->mc_list);
 303         t3_mac_set_rx_mode(&pi->mac, &rm);
 304 }
 305
 306 /**
 307  *      link_start - enable a port
 308  *      @dev: the device to enable
 309  *
 310  *      Performs the MAC and PHY actions needed to enable a port.
 311  */
 312 static void link_start(struct net_device *dev)
 313 {
 314         struct t3_rx_mode rm;
 315         struct port_info *pi = netdev_priv(dev);
 316         struct cmac *mac = &pi->mac;
 317
 318         init_rx_mode(&rm, dev, dev->mc_list);
 319         t3_mac_reset(mac);
 320         t3_mac_set_mtu(mac, dev->mtu);
 321         t3_mac_set_address(mac, 0, dev->dev_addr);
 322         t3_mac_set_rx_mode(mac, &rm);
 323         t3_link_start(&pi->phy, mac, &pi->link_config);
 324         t3_mac_enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
 325 }
 326
 327 static inline void cxgb_disable_msi(struct adapter *adapter)
 328 {
 329         if (adapter->flags & USING_MSIX) {
 330                 pci_disable_msix(adapter->pdev);
 331                 adapter->flags &= ~USING_MSIX;
 332         } else if (adapter->flags & USING_MSI) {
 333                 pci_disable_msi(adapter->pdev);
 334                 adapter->flags &= ~USING_MSI;
 335         }
 336 }
 337
 338 /*
 339  * Interrupt handler for asynchronous events used with MSI-X.
 340  */
 341 static irqreturn_t t3_async_intr_handler(int irq, void *cookie)
 342 {
 343         t3_slow_intr_handler(cookie);
 344         return IRQ_HANDLED;
 345 }
 346
 347 /*
 348  * Name the MSI-X interrupts.
 349  */
 350 static void name_msix_vecs(struct adapter *adap)
 351 {
 352         int i, j, msi_idx = 1, n = sizeof(adap->msix_info[0].desc) - 1;
 353
 354         snprintf(adap->msix_info[0].desc, n, "%s", adap->name);
 355         adap->msix_info[0].desc[n] = 0;
 356
 357         for_each_port(adap, j) {
 358                 struct net_device *d = adap->port[j];
 359                 const struct port_info *pi = netdev_priv(d);
 360
 361                 for (i = 0; i < pi->nqsets; i++, msi_idx++) {
 362                         snprintf(adap->msix_info[msi_idx].desc, n,
 363                                  "%s-%d", d->name, pi->first_qset + i);
 364                         adap->msix_info[msi_idx].desc[n] = 0;
 365                 }
 366         }
 367 }
 368
 369 static int request_msix_data_irqs(struct adapter *adap)
 370 {
 371         int i, j, err, qidx = 0;
 372
 373         for_each_port(adap, i) {
 374                 int nqsets = adap2pinfo(adap, i)->nqsets;
 375
 376                 for (j = 0; j < nqsets; ++j) {
 377                         err = request_irq(adap->msix_info[qidx + 1].vec,
 378                                           t3_intr_handler(adap,
 379                                                           adap->sge.qs[qidx].
 380                                                           rspq.polling), 0,
 381                                           adap->msix_info[qidx + 1].desc,
 382                                           &adap->sge.qs[qidx]);
 383                         if (err) {
 384                                 while (--qidx >= 0)
 385                                         free_irq(adap->msix_info[qidx + 1].vec,
 386                                                  &adap->sge.qs[qidx]);
 387                                 return err;
 388                         }
 389                         qidx++;
 390                 }
 391         }
 392         return 0;
 393 }
 394
 395 static void free_irq_resources(struct adapter *adapter)
 396 {
 397         if (adapter->flags & USING_MSIX) {
 398                 int i, n = 0;
 399
 400                 free_irq(adapter->msix_info[0].vec, adapter);
 401                 for_each_port(adapter, i)
 402                         n += adap2pinfo(adapter, i)->nqsets;
 403
 404                 for (i = 0; i < n; ++i)
 405                         free_irq(adapter->msix_info[i + 1].vec,
 406                                  &adapter->sge.qs[i]);
 407         } else
 408                 free_irq(adapter->pdev->irq, adapter);
 409 }
 410
 411 static int await_mgmt_replies(struct adapter *adap, unsigned long init_cnt,
 412                               unsigned long n)
 413 {
 414         int attempts = 5;
 415
 416         while (adap->sge.qs[0].rspq.offload_pkts < init_cnt + n) {
 417                 if (!--attempts)
 418                         return -ETIMEDOUT;
 419                 msleep(10);
 420         }
 421         return 0;
 422 }
 423
 424 static int init_tp_parity(struct adapter *adap)
 425 {
 426         int i;
 427         struct sk_buff *skb;
 428         struct cpl_set_tcb_field *greq;
 429         unsigned long cnt = adap->sge.qs[0].rspq.offload_pkts;
 430
 431         t3_tp_set_offload_mode(adap, 1);
 432
 433         for (i = 0; i < 16; i++) {
 434                 struct cpl_smt_write_req *req;
 435
 436                 skb = alloc_skb(sizeof(*req), GFP_KERNEL);
 437                 if (!skb)
 438                         skb = adap->nofail_skb;
 439                 if (!skb)
 440                         goto alloc_skb_fail;
 441
 442                 req = (struct cpl_smt_write_req *)__skb_put(skb, sizeof(*req));
 443                 memset(req, 0, sizeof(*req));
 444                 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 445                 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, i));
 446                 req->iff = i;
 447                 t3_mgmt_tx(adap, skb);
 448                 if (skb == adap->nofail_skb) {
 449                         await_mgmt_replies(adap, cnt, i + 1);
 450                         adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
 451                         if (!adap->nofail_skb)
 452                                 goto alloc_skb_fail;
 453                 }
 454         }
 455
 456         for (i = 0; i < 2048; i++) {
 457                 struct cpl_l2t_write_req *req;
 458
 459                 skb = alloc_skb(sizeof(*req), GFP_KERNEL);
 460                 if (!skb)
 461                         skb = adap->nofail_skb;
 462                 if (!skb)
 463                         goto alloc_skb_fail;
 464
 465                 req = (struct cpl_l2t_write_req *)__skb_put(skb, sizeof(*req));
 466                 memset(req, 0, sizeof(*req));
 467                 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 468                 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_L2T_WRITE_REQ, i));
 469                 req->params = htonl(V_L2T_W_IDX(i));
 470                 t3_mgmt_tx(adap, skb);
 471                 if (skb == adap->nofail_skb) {
 472                         await_mgmt_replies(adap, cnt, 16 + i + 1);
 473                         adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
 474                         if (!adap->nofail_skb)
 475                                 goto alloc_skb_fail;
 476                 }
 477         }
 478
 479         for (i = 0; i < 2048; i++) {
 480                 struct cpl_rte_write_req *req;
 481
 482                 skb = alloc_skb(sizeof(*req), GFP_KERNEL);
 483                 if (!skb)
 484                         skb = adap->nofail_skb;
 485                 if (!skb)
 486                         goto alloc_skb_fail;
 487
 488                 req = (struct cpl_rte_write_req *)__skb_put(skb, sizeof(*req));
 489                 memset(req, 0, sizeof(*req));
 490                 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 491                 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RTE_WRITE_REQ, i));
 492                 req->l2t_idx = htonl(V_L2T_W_IDX(i));
 493                 t3_mgmt_tx(adap, skb);
 494                 if (skb == adap->nofail_skb) {
 495                         await_mgmt_replies(adap, cnt, 16 + 2048 + i + 1);
 496                         adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
 497                         if (!adap->nofail_skb)
 498                                 goto alloc_skb_fail;
 499                 }
 500         }
 501
 502         skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
 503         if (!skb)
 504                 skb = adap->nofail_skb;
 505         if (!skb)
 506                 goto alloc_skb_fail;
 507
 508         greq = (struct cpl_set_tcb_field *)__skb_put(skb, sizeof(*greq));
 509         memset(greq, 0, sizeof(*greq));
 510         greq->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 511         OPCODE_TID(greq) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, 0));
 512         greq->mask = cpu_to_be64(1);
 513         t3_mgmt_tx(adap, skb);
 514
 515         i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1);
 516         if (skb == adap->nofail_skb) {
 517                 i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1);
 518                 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
 519         }
 520
 521         t3_tp_set_offload_mode(adap, 0);
 522         return i;
 523
 524 alloc_skb_fail:
 525         t3_tp_set_offload_mode(adap, 0);
 526         return -ENOMEM;
 527 }
 528
 529 /**
 530  *      setup_rss - configure RSS
 531  *      @adap: the adapter
 532  *
 533  *      Sets up RSS to distribute packets to multiple receive queues.  We
 534  *      configure the RSS CPU lookup table to distribute to the number of HW
 535  *      receive queues, and the response queue lookup table to narrow that
 536  *      down to the response queues actually configured for each port.
 537  *      We always configure the RSS mapping for two ports since the mapping
 538  *      table has plenty of entries.
 539  */
 540 static void setup_rss(struct adapter *adap)
 541 {
 542         int i;
 543         unsigned int nq0 = adap2pinfo(adap, 0)->nqsets;
 544         unsigned int nq1 = adap->port[1] ? adap2pinfo(adap, 1)->nqsets : 1;
 545         u8 cpus[SGE_QSETS + 1];
 546         u16 rspq_map[RSS_TABLE_SIZE];
 547
 548         for (i = 0; i < SGE_QSETS; ++i)
 549                 cpus[i] = i;
 550         cpus[SGE_QSETS] = 0xff; /* terminator */
 551
 552         for (i = 0; i < RSS_TABLE_SIZE / 2; ++i) {
 553                 rspq_map[i] = i % nq0;
 554                 rspq_map[i + RSS_TABLE_SIZE / 2] = (i % nq1) + nq0;
 555         }
 556
 557         t3_config_rss(adap, F_RQFEEDBACKENABLE | F_TNLLKPEN | F_TNLMAPEN |
 558                       F_TNLPRTEN | F_TNL2TUPEN | F_TNL4TUPEN |
 559                       V_RRCPLCPUSIZE(6) | F_HASHTOEPLITZ, cpus, rspq_map);
 560 }
 561
 562 static void init_napi(struct adapter *adap)
 563 {
 564         int i;
 565
 566         for (i = 0; i < SGE_QSETS; i++) {
 567                 struct sge_qset *qs = &adap->sge.qs[i];
 568
 569                 if (qs->adap)
 570                         netif_napi_add(qs->netdev, &qs->napi, qs->napi.poll,
 571                                        64);
 572         }
 573
 574         /*
 575          * netif_napi_add() can be called only once per napi_struct because it
 576          * adds each new napi_struct to a list.  Be careful not to call it a
 577          * second time, e.g., during EEH recovery, by making a note of it.
 578          */
 579         adap->flags |= NAPI_INIT;
 580 }
 581
 582 /*
 583  * Wait until all NAPI handlers are descheduled.  This includes the handlers of
 584  * both netdevices representing interfaces and the dummy ones for the extra
 585  * queues.
 586  */
 587 static void quiesce_rx(struct adapter *adap)
 588 {
 589         int i;
 590
 591         for (i = 0; i < SGE_QSETS; i++)
 592                 if (adap->sge.qs[i].adap)
 593                         napi_disable(&adap->sge.qs[i].napi);
 594 }
 595
 596 static void enable_all_napi(struct adapter *adap)
 597 {
 598         int i;
 599         for (i = 0; i < SGE_QSETS; i++)
 600                 if (adap->sge.qs[i].adap)
 601                         napi_enable(&adap->sge.qs[i].napi);
 602 }
 603
 604 /**
 605  *      set_qset_lro - Turn a queue set's LRO capability on and off
 606  *      @dev: the device the qset is attached to
 607  *      @qset_idx: the queue set index
 608  *      @val: the LRO switch
 609  *
 610  *      Sets LRO on or off for a particular queue set.
 611  *      the device's features flag is updated to reflect the LRO
 612  *      capability when all queues belonging to the device are
 613  *      in the same state.
 614  */
 615 static void set_qset_lro(struct net_device *dev, int qset_idx, int val)
 616 {
 617         struct port_info *pi = netdev_priv(dev);
 618         struct adapter *adapter = pi->adapter;
 619
 620         adapter->params.sge.qset[qset_idx].lro = !!val;
 621         adapter->sge.qs[qset_idx].lro_enabled = !!val;
 622 }
 623
 624 /**
 625  *      setup_sge_qsets - configure SGE Tx/Rx/response queues
 626  *      @adap: the adapter
 627  *
 628  *      Determines how many sets of SGE queues to use and initializes them.
 629  *      We support multiple queue sets per port if we have MSI-X, otherwise
 630  *      just one queue set per port.
 631  */
 632 static int setup_sge_qsets(struct adapter *adap)
 633 {
 634         int i, j, err, irq_idx = 0, qset_idx = 0;
 635         unsigned int ntxq = SGE_TXQ_PER_SET;
 636
 637         if (adap->params.rev > 0 && !(adap->flags & USING_MSI))
 638                 irq_idx = -1;
 639
 640         for_each_port(adap, i) {
 641                 struct net_device *dev = adap->port[i];
 642                 struct port_info *pi = netdev_priv(dev);
 643
 644                 pi->qs = &adap->sge.qs[pi->first_qset];
 645                 for (j = 0; j < pi->nqsets; ++j, ++qset_idx) {
 646                         set_qset_lro(dev, qset_idx, pi->rx_offload & T3_LRO);
 647                         err = t3_sge_alloc_qset(adap, qset_idx, 1,
 648                                 (adap->flags & USING_MSIX) ? qset_idx + 1 :
 649                                                              irq_idx,
 650                                 &adap->params.sge.qset[qset_idx], ntxq, dev,
 651                                 netdev_get_tx_queue(dev, j));
 652                         if (err) {
 653                                 t3_free_sge_resources(adap);
 654                                 return err;
 655                         }
 656                 }
 657         }
 658
 659         return 0;
 660 }
 661
 662 static ssize_t attr_show(struct device *d, char *buf,
 663                          ssize_t(*format) (struct net_device *, char *))
 664 {
 665         ssize_t len;
 666
 667         /* Synchronize with ioctls that may shut down the device */
 668         rtnl_lock();
 669         len = (*format) (to_net_dev(d), buf);
 670         rtnl_unlock();
 671         return len;
 672 }
 673
 674 static ssize_t attr_store(struct device *d,
 675                           const char *buf, size_t len,
 676                           ssize_t(*set) (struct net_device *, unsigned int),
 677                           unsigned int min_val, unsigned int max_val)
 678 {
 679         char *endp;
 680         ssize_t ret;
 681         unsigned int val;
 682
 683         if (!capable(CAP_NET_ADMIN))
 684                 return -EPERM;
 685
 686         val = simple_strtoul(buf, &endp, 0);
 687         if (endp == buf || val < min_val || val > max_val)
 688                 return -EINVAL;
 689
 690         rtnl_lock();
 691         ret = (*set) (to_net_dev(d), val);
 692         if (!ret)
 693                 ret = len;
 694         rtnl_unlock();
 695         return ret;
 696 }
 697
 698 #define CXGB3_SHOW(name, val_expr) \
 699 static ssize_t format_##name(struct net_device *dev, char *buf) \
 700 { \
 701         struct port_info *pi = netdev_priv(dev); \
 702         struct adapter *adap = pi->adapter; \
 703         return sprintf(buf, "%u\n", val_expr); \
 704 } \
 705 static ssize_t show_##name(struct device *d, struct device_attribute *attr, \
 706                            char *buf) \
 707 { \
 708         return attr_show(d, buf, format_##name); \
 709 }
 710
 711 static ssize_t set_nfilters(struct net_device *dev, unsigned int val)
 712 {
 713         struct port_info *pi = netdev_priv(dev);
 714         struct adapter *adap = pi->adapter;
 715         int min_tids = is_offload(adap) ? MC5_MIN_TIDS : 0;
 716
 717         if (adap->flags & FULL_INIT_DONE)
 718                 return -EBUSY;
 719         if (val && adap->params.rev == 0)
 720                 return -EINVAL;
 721         if (val > t3_mc5_size(&adap->mc5) - adap->params.mc5.nservers -
 722             min_tids)
 723                 return -EINVAL;
 724         adap->params.mc5.nfilters = val;
 725         return 0;
 726 }
 727
 728 static ssize_t store_nfilters(struct device *d, struct device_attribute *attr,
 729                               const char *buf, size_t len)
 730 {
 731         return attr_store(d, buf, len, set_nfilters, 0, ~0);
 732 }
 733
 734 static ssize_t set_nservers(struct net_device *dev, unsigned int val)
 735 {
 736         struct port_info *pi = netdev_priv(dev);
 737         struct adapter *adap = pi->adapter;
 738
 739         if (adap->flags & FULL_INIT_DONE)
 740                 return -EBUSY;
 741         if (val > t3_mc5_size(&adap->mc5) - adap->params.mc5.nfilters -
 742             MC5_MIN_TIDS)
 743                 return -EINVAL;
 744         adap->params.mc5.nservers = val;
 745         return 0;
 746 }
 747
 748 static ssize_t store_nservers(struct device *d, struct device_attribute *attr,
 749                               const char *buf, size_t len)
 750 {
 751         return attr_store(d, buf, len, set_nservers, 0, ~0);
 752 }
 753
 754 #define CXGB3_ATTR_R(name, val_expr) \
 755 CXGB3_SHOW(name, val_expr) \
 756 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
 757
 758 #define CXGB3_ATTR_RW(name, val_expr, store_method) \
 759 CXGB3_SHOW(name, val_expr) \
 760 static DEVICE_ATTR(name, S_IRUGO | S_IWUSR, show_##name, store_method)
 761
 762 CXGB3_ATTR_R(cam_size, t3_mc5_size(&adap->mc5));
 763 CXGB3_ATTR_RW(nfilters, adap->params.mc5.nfilters, store_nfilters);
 764 CXGB3_ATTR_RW(nservers, adap->params.mc5.nservers, store_nservers);
 765
 766 static struct attribute *cxgb3_attrs[] = {
 767         &dev_attr_cam_size.attr,
 768         &dev_attr_nfilters.attr,
 769         &dev_attr_nservers.attr,
 770         NULL
 771 };
 772
 773 static struct attribute_group cxgb3_attr_group = {.attrs = cxgb3_attrs };
 774
 775 static ssize_t tm_attr_show(struct device *d,
 776                             char *buf, int sched)
 777 {
 778         struct port_info *pi = netdev_priv(to_net_dev(d));
 779         struct adapter *adap = pi->adapter;
 780         unsigned int v, addr, bpt, cpt;
 781         ssize_t len;
 782
 783         addr = A_TP_TX_MOD_Q1_Q0_RATE_LIMIT - sched / 2;
 784         rtnl_lock();
 785         t3_write_reg(adap, A_TP_TM_PIO_ADDR, addr);
 786         v = t3_read_reg(adap, A_TP_TM_PIO_DATA);
 787         if (sched & 1)
 788                 v >>= 16;
 789         bpt = (v >> 8) & 0xff;
 790         cpt = v & 0xff;
 791         if (!cpt)
 792                 len = sprintf(buf, "disabled\n");
 793         else {
 794                 v = (adap->params.vpd.cclk * 1000) / cpt;
 795                 len = sprintf(buf, "%u Kbps\n", (v * bpt) / 125);
 796         }
 797         rtnl_unlock();
 798         return len;
 799 }
 800
 801 static ssize_t tm_attr_store(struct device *d,
 802                              const char *buf, size_t len, int sched)
 803 {
 804         struct port_info *pi = netdev_priv(to_net_dev(d));
 805         struct adapter *adap = pi->adapter;
 806         unsigned int val;
 807         char *endp;
 808         ssize_t ret;
 809
 810         if (!capable(CAP_NET_ADMIN))
 811                 return -EPERM;
 812
 813         val = simple_strtoul(buf, &endp, 0);
 814         if (endp == buf || val > 10000000)
 815                 return -EINVAL;
 816
 817         rtnl_lock();
 818         ret = t3_config_sched(adap, val, sched);
 819         if (!ret)
 820                 ret = len;
 821         rtnl_unlock();
 822         return ret;
 823 }
 824
 825 #define TM_ATTR(name, sched) \
 826 static ssize_t show_##name(struct device *d, struct device_attribute *attr, \
 827                            char *buf) \
 828 { \
 829         return tm_attr_show(d, buf, sched); \
 830 } \
 831 static ssize_t store_##name(struct device *d, struct device_attribute *attr, \
 832                             const char *buf, size_t len) \
 833 { \
 834         return tm_attr_store(d, buf, len, sched); \
 835 } \
 836 static DEVICE_ATTR(name, S_IRUGO | S_IWUSR, show_##name, store_##name)
 837
 838 TM_ATTR(sched0, 0);
 839 TM_ATTR(sched1, 1);
 840 TM_ATTR(sched2, 2);
 841 TM_ATTR(sched3, 3);
 842 TM_ATTR(sched4, 4);
 843 TM_ATTR(sched5, 5);
 844 TM_ATTR(sched6, 6);
 845 TM_ATTR(sched7, 7);
 846
 847 static struct attribute *offload_attrs[] = {
 848         &dev_attr_sched0.attr,
 849         &dev_attr_sched1.attr,
 850         &dev_attr_sched2.attr,
 851         &dev_attr_sched3.attr,
 852         &dev_attr_sched4.attr,
 853         &dev_attr_sched5.attr,
 854         &dev_attr_sched6.attr,
 855         &dev_attr_sched7.attr,
 856         NULL
 857 };
 858
 859 static struct attribute_group offload_attr_group = {.attrs = offload_attrs };
 860
 861 /*
 862  * Sends an sk_buff to an offload queue driver
 863  * after dealing with any active network taps.
 864  */
 865 static inline int offload_tx(struct t3cdev *tdev, struct sk_buff *skb)
 866 {
 867         int ret;
 868
 869         local_bh_disable();
 870         ret = t3_offload_tx(tdev, skb);
 871         local_bh_enable();
 872         return ret;
 873 }
 874
 875 static int write_smt_entry(struct adapter *adapter, int idx)
 876 {
 877         struct cpl_smt_write_req *req;
 878         struct sk_buff *skb = alloc_skb(sizeof(*req), GFP_KERNEL);
 879
 880         if (!skb)
 881                 return -ENOMEM;
 882
 883         req = (struct cpl_smt_write_req *)__skb_put(skb, sizeof(*req));
 884         req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 885         OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, idx));
 886         req->mtu_idx = NMTUS - 1;       /* should be 0 but there's a T3 bug */
 887         req->iff = idx;
 888         memset(req->src_mac1, 0, sizeof(req->src_mac1));
 889         memcpy(req->src_mac0, adapter->port[idx]->dev_addr, ETH_ALEN);
 890         skb->priority = 1;
 891         offload_tx(&adapter->tdev, skb);
 892         return 0;
 893 }
 894
 895 static int init_smt(struct adapter *adapter)
 896 {
 897         int i;
 898
 899         for_each_port(adapter, i)
 900             write_smt_entry(adapter, i);
 901         return 0;
 902 }
 903
 904 static void init_port_mtus(struct adapter *adapter)
 905 {
 906         unsigned int mtus = adapter->port[0]->mtu;
 907
 908         if (adapter->port[1])
 909                 mtus |= adapter->port[1]->mtu << 16;
 910         t3_write_reg(adapter, A_TP_MTU_PORT_TABLE, mtus);
 911 }
 912
 913 static int send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo,
 914                               int hi, int port)
 915 {
 916         struct sk_buff *skb;
 917         struct mngt_pktsched_wr *req;
 918         int ret;
 919
 920         skb = alloc_skb(sizeof(*req), GFP_KERNEL);
 921         if (!skb)
 922                 skb = adap->nofail_skb;
 923         if (!skb)
 924                 return -ENOMEM;
 925
 926         req = (struct mngt_pktsched_wr *)skb_put(skb, sizeof(*req));
 927         req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_MNGT));
 928         req->mngt_opcode = FW_MNGTOPCODE_PKTSCHED_SET;
 929         req->sched = sched;
 930         req->idx = qidx;
 931         req->min = lo;
 932         req->max = hi;
 933         req->binding = port;
 934         ret = t3_mgmt_tx(adap, skb);
 935         if (skb == adap->nofail_skb) {
 936                 adap->nofail_skb = alloc_skb(sizeof(struct cpl_set_tcb_field),
 937                                              GFP_KERNEL);
 938                 if (!adap->nofail_skb)
 939                         ret = -ENOMEM;
 940         }
 941
 942         return ret;
 943 }
 944
 945 static int bind_qsets(struct adapter *adap)
 946 {
 947         int i, j, err = 0;
 948
 949         for_each_port(adap, i) {
 950                 const struct port_info *pi = adap2pinfo(adap, i);
 951
 952                 for (j = 0; j < pi->nqsets; ++j) {
 953                         int ret = send_pktsched_cmd(adap, 1,
 954                                                     pi->first_qset + j, -1,
 955                                                     -1, i);
 956                         if (ret)
 957                                 err = ret;
 958                 }
 959         }
 960
 961         return err;
 962 }
 963
 964 #define FW_FNAME "cxgb3/t3fw-%d.%d.%d.bin"
 965 #define TPSRAM_NAME "cxgb3/t3%c_psram-%d.%d.%d.bin"
 966
 967 static int upgrade_fw(struct adapter *adap)
 968 {
 969         int ret;
 970         char buf[64];
 971         const struct firmware *fw;
 972         struct device *dev = &adap->pdev->dev;
 973
 974         snprintf(buf, sizeof(buf), FW_FNAME, FW_VERSION_MAJOR,
 975                  FW_VERSION_MINOR, FW_VERSION_MICRO);
 976         ret = request_firmware(&fw, buf, dev);
 977         if (ret < 0) {
 978                 dev_err(dev, "could not upgrade firmware: unable to load %s\n",
 979                         buf);
 980                 return ret;
 981         }
 982         ret = t3_load_fw(adap, fw->data, fw->size);
 983         release_firmware(fw);
 984
 985         if (ret == 0)
 986                 dev_info(dev, "successful upgrade to firmware %d.%d.%d\n",
 987                          FW_VERSION_MAJOR, FW_VERSION_MINOR, FW_VERSION_MICRO);
 988         else
 989                 dev_err(dev, "failed to upgrade to firmware %d.%d.%d\n",
 990                         FW_VERSION_MAJOR, FW_VERSION_MINOR, FW_VERSION_MICRO);
 991
 992         return ret;
 993 }
 994
 995 static inline char t3rev2char(struct adapter *adapter)
 996 {
 997         char rev = 0;
 998
 999         switch(adapter->params.rev) {
1000         case T3_REV_B:
1001         case T3_REV_B2:
1002                 rev = 'b';
1003                 break;
1004         case T3_REV_C:
1005                 rev = 'c';
1006                 break;
1007         }
1008         return rev;
1009 }
1010
1011 static int update_tpsram(struct adapter *adap)
1012 {
1013         const struct firmware *tpsram;
1014         char buf[64];
1015         struct device *dev = &adap->pdev->dev;
1016         int ret;
1017         char rev;
1018
1019         rev = t3rev2char(adap);
1020         if (!rev)
1021                 return 0;
1022
1023         snprintf(buf, sizeof(buf), TPSRAM_NAME, rev,
1024                  TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO);
1025
1026         ret = request_firmware(&tpsram, buf, dev);
1027         if (ret < 0) {
1028                 dev_err(dev, "could not load TP SRAM: unable to load %s\n",
1029                         buf);
1030                 return ret;
1031         }
1032
1033         ret = t3_check_tpsram(adap, tpsram->data, tpsram->size);
1034         if (ret)
1035                 goto release_tpsram;
1036
1037         ret = t3_set_proto_sram(adap, tpsram->data);
1038         if (ret == 0)
1039                 dev_info(dev,
1040                          "successful update of protocol engine "
1041                          "to %d.%d.%d\n",
1042                          TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO);
1043         else
1044                 dev_err(dev, "failed to update of protocol engine %d.%d.%d\n",
1045                         TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO);
1046         if (ret)
1047                 dev_err(dev, "loading protocol SRAM failed\n");
1048
1049 release_tpsram:
1050         release_firmware(tpsram);
1051
1052         return ret;
1053 }
1054
1055 /**
1056  *      cxgb_up - enable the adapter
1057  *      @adapter: adapter being enabled
1058  *
1059  *      Called when the first port is enabled, this function performs the
1060  *      actions necessary to make an adapter operational, such as completing
1061  *      the initialization of HW modules, and enabling interrupts.
1062  *
1063  *      Must be called with the rtnl lock held.
1064  */
1065 static int cxgb_up(struct adapter *adap)
1066 {
1067         int err;
1068
1069         if (!(adap->flags & FULL_INIT_DONE)) {
1070                 err = t3_check_fw_version(adap);
1071                 if (err == -EINVAL) {
1072                         err = upgrade_fw(adap);
1073                         CH_WARN(adap, "FW upgrade to %d.%d.%d %s\n",
1074                                 FW_VERSION_MAJOR, FW_VERSION_MINOR,
1075                                 FW_VERSION_MICRO, err ? "failed" : "succeeded");
1076                 }
1077
1078                 err = t3_check_tpsram_version(adap);
1079                 if (err == -EINVAL) {
1080                         err = update_tpsram(adap);
1081                         CH_WARN(adap, "TP upgrade to %d.%d.%d %s\n",
1082                                 TP_VERSION_MAJOR, TP_VERSION_MINOR,
1083                                 TP_VERSION_MICRO, err ? "failed" : "succeeded");
1084                 }
1085
1086                 /*
1087                  * Clear interrupts now to catch errors if t3_init_hw fails.
1088                  * We clear them again later as initialization may trigger
1089                  * conditions that can interrupt.
1090                  */
1091                 t3_intr_clear(adap);
1092
1093                 err = t3_init_hw(adap, 0);
1094                 if (err)
1095                         goto out;
1096
1097                 t3_set_reg_field(adap, A_TP_PARA_REG5, 0, F_RXDDPOFFINIT);
1098                 t3_write_reg(adap, A_ULPRX_TDDP_PSZ, V_HPZ0(PAGE_SHIFT - 12));
1099
1100                 err = setup_sge_qsets(adap);
1101                 if (err)
1102                         goto out;
1103
1104                 setup_rss(adap);
1105                 if (!(adap->flags & NAPI_INIT))
1106                         init_napi(adap);
1107
1108                 t3_start_sge_timers(adap);
1109                 adap->flags |= FULL_INIT_DONE;
1110         }
1111
1112         t3_intr_clear(adap);
1113
1114         if (adap->flags & USING_MSIX) {
1115                 name_msix_vecs(adap);
1116                 err = request_irq(adap->msix_info[0].vec,
1117                                   t3_async_intr_handler, 0,
1118                                   adap->msix_info[0].desc, adap);
1119                 if (err)
1120                         goto irq_err;
1121
1122                 err = request_msix_data_irqs(adap);
1123                 if (err) {
1124                         free_irq(adap->msix_info[0].vec, adap);
1125                         goto irq_err;
1126                 }
1127         } else if ((err = request_irq(adap->pdev->irq,
1128                                       t3_intr_handler(adap,
1129                                                       adap->sge.qs[0].rspq.
1130                                                       polling),
1131                                       (adap->flags & USING_MSI) ?
1132                                        0 : IRQF_SHARED,
1133                                       adap->name, adap)))
1134                 goto irq_err;
1135
1136         enable_all_napi(adap);
1137         t3_sge_start(adap);
1138         t3_intr_enable(adap);
1139
1140         if (adap->params.rev >= T3_REV_C && !(adap->flags & TP_PARITY_INIT) &&
1141             is_offload(adap) && init_tp_parity(adap) == 0)
1142                 adap->flags |= TP_PARITY_INIT;
1143
1144         if (adap->flags & TP_PARITY_INIT) {
1145                 t3_write_reg(adap, A_TP_INT_CAUSE,
1146                              F_CMCACHEPERR | F_ARPLUTPERR);
1147                 t3_write_reg(adap, A_TP_INT_ENABLE, 0x7fbfffff);
1148         }
1149
1150         if (!(adap->flags & QUEUES_BOUND)) {
1151                 err = bind_qsets(adap);
1152                 if (err) {
1153                         CH_ERR(adap, "failed to bind qsets, err %d\n", err);
1154                         t3_intr_disable(adap);
1155                         free_irq_resources(adap);
1156                         goto out;
1157                 }
1158                 adap->flags |= QUEUES_BOUND;
1159         }
1160
1161 out:
1162         return err;
1163 irq_err:
1164         CH_ERR(adap, "request_irq failed, err %d\n", err);
1165         goto out;
1166 }
1167
1168 /*
1169  * Release resources when all the ports and offloading have been stopped.
1170  */
1171 static void cxgb_down(struct adapter *adapter)
1172 {
1173         t3_sge_stop(adapter);
1174         spin_lock_irq(&adapter->work_lock);     /* sync with PHY intr task */
1175         t3_intr_disable(adapter);
1176         spin_unlock_irq(&adapter->work_lock);
1177
1178         free_irq_resources(adapter);
1179         quiesce_rx(adapter);
1180         flush_workqueue(cxgb3_wq);      /* wait for external IRQ handler */
1181 }
1182
1183 static void schedule_chk_task(struct adapter *adap)
1184 {
1185         unsigned int timeo;
1186
1187         timeo = adap->params.linkpoll_period ?
1188             (HZ * adap->params.linkpoll_period) / 10 :
1189             adap->params.stats_update_period * HZ;
1190         if (timeo)
1191                 queue_delayed_work(cxgb3_wq, &adap->adap_check_task, timeo);
1192 }
1193
1194 static int offload_open(struct net_device *dev)
1195 {
1196         struct port_info *pi = netdev_priv(dev);
1197         struct adapter *adapter = pi->adapter;
1198         struct t3cdev *tdev = dev2t3cdev(dev);
1199         int adap_up = adapter->open_device_map & PORT_MASK;
1200         int err;
1201
1202         if (test_and_set_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map))
1203                 return 0;
1204
1205         if (!adap_up && (err = cxgb_up(adapter)) < 0)
1206                 goto out;
1207
1208         t3_tp_set_offload_mode(adapter, 1);
1209         tdev->lldev = adapter->port[0];
1210         err = cxgb3_offload_activate(adapter);
1211         if (err)
1212                 goto out;
1213
1214         init_port_mtus(adapter);
1215         t3_load_mtus(adapter, adapter->params.mtus, adapter->params.a_wnd,
1216                      adapter->params.b_wnd,
1217                      adapter->params.rev == 0 ?
1218                      adapter->port[0]->mtu : 0xffff);
1219         init_smt(adapter);
1220
1221         if (sysfs_create_group(&tdev->lldev->dev.kobj, &offload_attr_group))
1222                 dev_dbg(&dev->dev, "cannot create sysfs group\n");
1223
1224         /* Call back all registered clients */
1225         cxgb3_add_clients(tdev);
1226
1227 out:
1228         /* restore them in case the offload module has changed them */
1229         if (err) {
1230                 t3_tp_set_offload_mode(adapter, 0);
1231                 clear_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map);
1232                 cxgb3_set_dummy_ops(tdev);
1233         }
1234         return err;
1235 }
1236
1237 static int offload_close(struct t3cdev *tdev)
1238 {
1239         struct adapter *adapter = tdev2adap(tdev);
1240
1241         if (!test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map))
1242                 return 0;
1243
1244         /* Call back all registered clients */
1245         cxgb3_remove_clients(tdev);
1246
1247         sysfs_remove_group(&tdev->lldev->dev.kobj, &offload_attr_group);
1248
1249         /* Flush work scheduled while releasing TIDs */
1250         flush_scheduled_work();
1251
1252         tdev->lldev = NULL;
1253         cxgb3_set_dummy_ops(tdev);
1254         t3_tp_set_offload_mode(adapter, 0);
1255         clear_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map);
1256
1257         if (!adapter->open_device_map)
1258                 cxgb_down(adapter);
1259
1260         cxgb3_offload_deactivate(adapter);
1261         return 0;
1262 }
1263
1264 static int cxgb_open(struct net_device *dev)
1265 {
1266         struct port_info *pi = netdev_priv(dev);
1267         struct adapter *adapter = pi->adapter;
1268         int other_ports = adapter->open_device_map & PORT_MASK;
1269         int err;
1270
1271         if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0)
1272                 return err;
1273
1274         set_bit(pi->port_id, &adapter->open_device_map);
1275         if (is_offload(adapter) && !ofld_disable) {
1276                 err = offload_open(dev);
1277                 if (err)
1278                         printk(KERN_WARNING
1279                                "Could not initialize offload capabilities\n");
1280         }
1281
1282         dev->real_num_tx_queues = pi->nqsets;
1283         link_start(dev);
1284         t3_port_intr_enable(adapter, pi->port_id);
1285         netif_tx_start_all_queues(dev);
1286         if (!other_ports)
1287                 schedule_chk_task(adapter);
1288
1289         return 0;
1290 }
1291
1292 static int cxgb_close(struct net_device *dev)
1293 {
1294         struct port_info *pi = netdev_priv(dev);
1295         struct adapter *adapter = pi->adapter;
1296
1297
1298         if (!adapter->open_device_map)
1299                 return 0;
1300
1301         /* Stop link fault interrupts */
1302         t3_xgm_intr_disable(adapter, pi->port_id);
1303         t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset);
1304
1305         t3_port_intr_disable(adapter, pi->port_id);
1306         netif_tx_stop_all_queues(dev);
1307         pi->phy.ops->power_down(&pi->phy, 1);
1308         netif_carrier_off(dev);
1309         t3_mac_disable(&pi->mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX);
1310
1311         spin_lock_irq(&adapter->work_lock);     /* sync with update task */
1312         clear_bit(pi->port_id, &adapter->open_device_map);
1313         spin_unlock_irq(&adapter->work_lock);
1314
1315         if (!(adapter->open_device_map & PORT_MASK))
1316                 cancel_delayed_work_sync(&adapter->adap_check_task);
1317
1318         if (!adapter->open_device_map)
1319                 cxgb_down(adapter);
1320
1321         return 0;
1322 }
1323
1324 static struct net_device_stats *cxgb_get_stats(struct net_device *dev)
1325 {
1326         struct port_info *pi = netdev_priv(dev);
1327         struct adapter *adapter = pi->adapter;
1328         struct net_device_stats *ns = &pi->netstats;
1329         const struct mac_stats *pstats;
1330
1331         spin_lock(&adapter->stats_lock);
1332         pstats = t3_mac_update_stats(&pi->mac);
1333         spin_unlock(&adapter->stats_lock);
1334
1335         ns->tx_bytes = pstats->tx_octets;
1336         ns->tx_packets = pstats->tx_frames;
1337         ns->rx_bytes = pstats->rx_octets;
1338         ns->rx_packets = pstats->rx_frames;
1339         ns->multicast = pstats->rx_mcast_frames;
1340
1341         ns->tx_errors = pstats->tx_underrun;
1342         ns->rx_errors = pstats->rx_symbol_errs + pstats->rx_fcs_errs +
1343             pstats->rx_too_long + pstats->rx_jabber + pstats->rx_short +
1344             pstats->rx_fifo_ovfl;
1345
1346         /* detailed rx_errors */
1347         ns->rx_length_errors = pstats->rx_jabber + pstats->rx_too_long;
1348         ns->rx_over_errors = 0;
1349         ns->rx_crc_errors = pstats->rx_fcs_errs;
1350         ns->rx_frame_errors = pstats->rx_symbol_errs;
1351         ns->rx_fifo_errors = pstats->rx_fifo_ovfl;
1352         ns->rx_missed_errors = pstats->rx_cong_drops;
1353
1354         /* detailed tx_errors */
1355         ns->tx_aborted_errors = 0;
1356         ns->tx_carrier_errors = 0;
1357         ns->tx_fifo_errors = pstats->tx_underrun;
1358         ns->tx_heartbeat_errors = 0;
1359         ns->tx_window_errors = 0;
1360         return ns;
1361 }
1362
1363 static u32 get_msglevel(struct net_device *dev)
1364 {
1365         struct port_info *pi = netdev_priv(dev);
1366         struct adapter *adapter = pi->adapter;
1367
1368         return adapter->msg_enable;
1369 }
1370
1371 static void set_msglevel(struct net_device *dev, u32 val)
1372 {
1373         struct port_info *pi = netdev_priv(dev);
1374         struct adapter *adapter = pi->adapter;
1375
1376         adapter->msg_enable = val;
1377 }
1378
1379 static char stats_strings[][ETH_GSTRING_LEN] = {
1380         "TxOctetsOK         ",
1381         "TxFramesOK         ",
1382         "TxMulticastFramesOK",
1383         "TxBroadcastFramesOK",
1384         "TxPauseFrames      ",
1385         "TxUnderrun         ",
1386         "TxExtUnderrun      ",
1387
1388         "TxFrames64         ",
1389         "TxFrames65To127    ",
1390         "TxFrames128To255   ",
1391         "TxFrames256To511   ",
1392         "TxFrames512To1023  ",
1393         "TxFrames1024To1518 ",
1394         "TxFrames1519ToMax  ",
1395
1396         "RxOctetsOK         ",
1397         "RxFramesOK         ",
1398         "RxMulticastFramesOK",
1399         "RxBroadcastFramesOK",
1400         "RxPauseFrames      ",
1401         "RxFCSErrors        ",
1402         "RxSymbolErrors     ",
1403         "RxShortErrors      ",
1404         "RxJabberErrors     ",
1405         "RxLengthErrors     ",
1406         "RxFIFOoverflow     ",
1407
1408         "RxFrames64         ",
1409         "RxFrames65To127    ",
1410         "RxFrames128To255   ",
1411         "RxFrames256To511   ",
1412         "RxFrames512To1023  ",
1413         "RxFrames1024To1518 ",
1414         "RxFrames1519ToMax  ",
1415
1416         "PhyFIFOErrors      ",
1417         "TSO                ",
1418         "VLANextractions    ",
1419         "VLANinsertions     ",
1420         "TxCsumOffload      ",
1421         "RxCsumGood         ",
1422         "LroAggregated      ",
1423         "LroFlushed         ",
1424         "LroNoDesc          ",
1425         "RxDrops            ",
1426
1427         "CheckTXEnToggled   ",
1428         "CheckResets        ",
1429
1430         "LinkFaults         ",
1431 };
1432
1433 static int get_sset_count(struct net_device *dev, int sset)
1434 {
1435         switch (sset) {
1436         case ETH_SS_STATS:
1437                 return ARRAY_SIZE(stats_strings);
1438         default:
1439                 return -EOPNOTSUPP;
1440         }
1441 }
1442
1443 #define T3_REGMAP_SIZE (3 * 1024)
1444
1445 static int get_regs_len(struct net_device *dev)
1446 {
1447         return T3_REGMAP_SIZE;
1448 }
1449
1450 static int get_eeprom_len(struct net_device *dev)
1451 {
1452         return EEPROMSIZE;
1453 }
1454
1455 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1456 {
1457         struct port_info *pi = netdev_priv(dev);
1458         struct adapter *adapter = pi->adapter;
1459         u32 fw_vers = 0;
1460         u32 tp_vers = 0;
1461
1462         spin_lock(&adapter->stats_lock);
1463         t3_get_fw_version(adapter, &fw_vers);
1464         t3_get_tp_version(adapter, &tp_vers);
1465         spin_unlock(&adapter->stats_lock);
1466
1467         strcpy(info->driver, DRV_NAME);
1468         strcpy(info->version, DRV_VERSION);
1469         strcpy(info->bus_info, pci_name(adapter->pdev));
1470         if (!fw_vers)
1471                 strcpy(info->fw_version, "N/A");
1472         else {
1473                 snprintf(info->fw_version, sizeof(info->fw_version),
1474                          "%s %u.%u.%u TP %u.%u.%u",
1475                          G_FW_VERSION_TYPE(fw_vers) ? "T" : "N",
1476                          G_FW_VERSION_MAJOR(fw_vers),
1477                          G_FW_VERSION_MINOR(fw_vers),
1478                          G_FW_VERSION_MICRO(fw_vers),
1479                          G_TP_VERSION_MAJOR(tp_vers),
1480                          G_TP_VERSION_MINOR(tp_vers),
1481                          G_TP_VERSION_MICRO(tp_vers));
1482         }
1483 }
1484
1485 static void get_strings(struct net_device *dev, u32 stringset, u8 * data)
1486 {
1487         if (stringset == ETH_SS_STATS)
1488                 memcpy(data, stats_strings, sizeof(stats_strings));
1489 }
1490
1491 static unsigned long collect_sge_port_stats(struct adapter *adapter,
1492                                             struct port_info *p, int idx)
1493 {
1494         int i;
1495         unsigned long tot = 0;
1496
1497         for (i = p->first_qset; i < p->first_qset + p->nqsets; ++i)
1498                 tot += adapter->sge.qs[i].port_stats[idx];
1499         return tot;
1500 }
1501
1502 static void get_stats(struct net_device *dev, struct ethtool_stats *stats,
1503                       u64 *data)
1504 {
1505         struct port_info *pi = netdev_priv(dev);
1506         struct adapter *adapter = pi->adapter;
1507         const struct mac_stats *s;
1508
1509         spin_lock(&adapter->stats_lock);
1510         s = t3_mac_update_stats(&pi->mac);
1511         spin_unlock(&adapter->stats_lock);
1512
1513         *data++ = s->tx_octets;
1514         *data++ = s->tx_frames;
1515         *data++ = s->tx_mcast_frames;
1516         *data++ = s->tx_bcast_frames;
1517         *data++ = s->tx_pause;
1518         *data++ = s->tx_underrun;
1519         *data++ = s->tx_fifo_urun;
1520
1521         *data++ = s->tx_frames_64;
1522         *data++ = s->tx_frames_65_127;
1523         *data++ = s->tx_frames_128_255;
1524         *data++ = s->tx_frames_256_511;
1525         *data++ = s->tx_frames_512_1023;
1526         *data++ = s->tx_frames_1024_1518;
1527         *data++ = s->tx_frames_1519_max;
1528
1529         *data++ = s->rx_octets;
1530         *data++ = s->rx_frames;
1531         *data++ = s->rx_mcast_frames;
1532         *data++ = s->rx_bcast_frames;
1533         *data++ = s->rx_pause;
1534         *data++ = s->rx_fcs_errs;
1535         *data++ = s->rx_symbol_errs;
1536         *data++ = s->rx_short;
1537         *data++ = s->rx_jabber;
1538         *data++ = s->rx_too_long;
1539         *data++ = s->rx_fifo_ovfl;
1540
1541         *data++ = s->rx_frames_64;
1542         *data++ = s->rx_frames_65_127;
1543         *data++ = s->rx_frames_128_255;
1544         *data++ = s->rx_frames_256_511;
1545         *data++ = s->rx_frames_512_1023;
1546         *data++ = s->rx_frames_1024_1518;
1547         *data++ = s->rx_frames_1519_max;
1548
1549         *data++ = pi->phy.fifo_errors;
1550
1551         *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_TSO);
1552         *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_VLANEX);
1553         *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_VLANINS);
1554         *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_TX_CSUM);
1555         *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_RX_CSUM_GOOD);
1556         *data++ = 0;
1557         *data++ = 0;
1558         *data++ = 0;
1559         *data++ = s->rx_cong_drops;
1560
1561         *data++ = s->num_toggled;
1562         *data++ = s->num_resets;
1563
1564         *data++ = s->link_faults;
1565 }
1566
1567 static inline void reg_block_dump(struct adapter *ap, void *buf,
1568                                   unsigned int start, unsigned int end)
1569 {
1570         u32 *p = buf + start;
1571
1572         for (; start <= end; start += sizeof(u32))
1573                 *p++ = t3_read_reg(ap, start);
1574 }
1575
1576 static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
1577                      void *buf)
1578 {
1579         struct port_info *pi = netdev_priv(dev);
1580         struct adapter *ap = pi->adapter;
1581
1582         /*
1583          * Version scheme:
1584          * bits 0..9: chip version
1585          * bits 10..15: chip revision
1586          * bit 31: set for PCIe cards
1587          */
1588         regs->version = 3 | (ap->params.rev << 10) | (is_pcie(ap) << 31);
1589
1590         /*
1591          * We skip the MAC statistics registers because they are clear-on-read.
1592          * Also reading multi-register stats would need to synchronize with the
1593          * periodic mac stats accumulation.  Hard to justify the complexity.
1594          */
1595         memset(buf, 0, T3_REGMAP_SIZE);
1596         reg_block_dump(ap, buf, 0, A_SG_RSPQ_CREDIT_RETURN);
1597         reg_block_dump(ap, buf, A_SG_HI_DRB_HI_THRSH, A_ULPRX_PBL_ULIMIT);
1598         reg_block_dump(ap, buf, A_ULPTX_CONFIG, A_MPS_INT_CAUSE);
1599         reg_block_dump(ap, buf, A_CPL_SWITCH_CNTRL, A_CPL_MAP_TBL_DATA);
1600         reg_block_dump(ap, buf, A_SMB_GLOBAL_TIME_CFG, A_XGM_SERDES_STAT3);
1601         reg_block_dump(ap, buf, A_XGM_SERDES_STATUS0,
1602                        XGM_REG(A_XGM_SERDES_STAT3, 1));
1603         reg_block_dump(ap, buf, XGM_REG(A_XGM_SERDES_STATUS0, 1),
1604                        XGM_REG(A_XGM_RX_SPI4_SOP_EOP_CNT, 1));
1605 }
1606
1607 static int restart_autoneg(struct net_device *dev)
1608 {
1609         struct port_info *p = netdev_priv(dev);
1610
1611         if (!netif_running(dev))
1612                 return -EAGAIN;
1613         if (p->link_config.autoneg != AUTONEG_ENABLE)
1614                 return -EINVAL;
1615         p->phy.ops->autoneg_restart(&p->phy);
1616         return 0;
1617 }
1618
1619 static int cxgb3_phys_id(struct net_device *dev, u32 data)
1620 {
1621         struct port_info *pi = netdev_priv(dev);
1622         struct adapter *adapter = pi->adapter;
1623         int i;
1624
1625         if (data == 0)
1626                 data = 2;
1627
1628         for (i = 0; i < data * 2; i++) {
1629                 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL,
1630                                  (i & 1) ? F_GPIO0_OUT_VAL : 0);
1631                 if (msleep_interruptible(500))
1632                         break;
1633         }
1634         t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL,
1635                          F_GPIO0_OUT_VAL);
1636         return 0;
1637 }
1638
1639 static int get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1640 {
1641         struct port_info *p = netdev_priv(dev);
1642
1643         cmd->supported = p->link_config.supported;
1644         cmd->advertising = p->link_config.advertising;
1645
1646         if (netif_carrier_ok(dev)) {
1647                 cmd->speed = p->link_config.speed;
1648                 cmd->duplex = p->link_config.duplex;
1649         } else {
1650                 cmd->speed = -1;
1651                 cmd->duplex = -1;
1652         }
1653
1654         cmd->port = (cmd->supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE;
1655         cmd->phy_address = p->phy.mdio.prtad;
1656         cmd->transceiver = XCVR_EXTERNAL;
1657         cmd->autoneg = p->link_config.autoneg;
1658         cmd->maxtxpkt = 0;
1659         cmd->maxrxpkt = 0;
1660         return 0;
1661 }
1662
1663 static int speed_duplex_to_caps(int speed, int duplex)
1664 {
1665         int cap = 0;
1666
1667         switch (speed) {
1668         case SPEED_10:
1669                 if (duplex == DUPLEX_FULL)
1670                         cap = SUPPORTED_10baseT_Full;
1671                 else
1672                         cap = SUPPORTED_10baseT_Half;
1673                 break;
1674         case SPEED_100:
1675                 if (duplex == DUPLEX_FULL)
1676                         cap = SUPPORTED_100baseT_Full;
1677                 else
1678                         cap = SUPPORTED_100baseT_Half;
1679                 break;
1680         case SPEED_1000:
1681                 if (duplex == DUPLEX_FULL)
1682                         cap = SUPPORTED_1000baseT_Full;
1683                 else
1684                         cap = SUPPORTED_1000baseT_Half;
1685                 break;
1686         case SPEED_10000:
1687                 if (duplex == DUPLEX_FULL)
1688                         cap = SUPPORTED_10000baseT_Full;
1689         }
1690         return cap;
1691 }
1692
1693 #define ADVERTISED_MASK (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | \
1694                       ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | \
1695                       ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full | \
1696                       ADVERTISED_10000baseT_Full)
1697
1698 static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1699 {
1700         struct port_info *p = netdev_priv(dev);
1701         struct link_config *lc = &p->link_config;
1702
1703         if (!(lc->supported & SUPPORTED_Autoneg)) {
1704                 /*
1705                  * PHY offers a single speed/duplex.  See if that's what's
1706                  * being requested.
1707                  */
1708                 if (cmd->autoneg == AUTONEG_DISABLE) {
1709                         int cap = speed_duplex_to_caps(cmd->speed, cmd->duplex);
1710                         if (lc->supported & cap)
1711                                 return 0;
1712                 }
1713                 return -EINVAL;
1714         }
1715
1716         if (cmd->autoneg == AUTONEG_DISABLE) {
1717                 int cap = speed_duplex_to_caps(cmd->speed, cmd->duplex);
1718
1719                 if (!(lc->supported & cap) || cmd->speed == SPEED_1000)
1720                         return -EINVAL;
1721                 lc->requested_speed = cmd->speed;
1722                 lc->requested_duplex = cmd->duplex;
1723                 lc->advertising = 0;
1724         } else {
1725                 cmd->advertising &= ADVERTISED_MASK;
1726                 cmd->advertising &= lc->supported;
1727                 if (!cmd->advertising)
1728                         return -EINVAL;
1729                 lc->requested_speed = SPEED_INVALID;
1730                 lc->requested_duplex = DUPLEX_INVALID;
1731                 lc->advertising = cmd->advertising | ADVERTISED_Autoneg;
1732         }
1733         lc->autoneg = cmd->autoneg;
1734         if (netif_running(dev))
1735                 t3_link_start(&p->phy, &p->mac, lc);
1736         return 0;
1737 }
1738
1739 static void get_pauseparam(struct net_device *dev,
1740                            struct ethtool_pauseparam *epause)
1741 {
1742         struct port_info *p = netdev_priv(dev);
1743
1744         epause->autoneg = (p->link_config.requested_fc & PAUSE_AUTONEG) != 0;
1745         epause->rx_pause = (p->link_config.fc & PAUSE_RX) != 0;
1746         epause->tx_pause = (p->link_config.fc & PAUSE_TX) != 0;
1747 }
1748
1749 static int set_pauseparam(struct net_device *dev,
1750                           struct ethtool_pauseparam *epause)
1751 {
1752         struct port_info *p = netdev_priv(dev);
1753         struct link_config *lc = &p->link_config;
1754
1755         if (epause->autoneg == AUTONEG_DISABLE)
1756                 lc->requested_fc = 0;
1757         else if (lc->supported & SUPPORTED_Autoneg)
1758                 lc->requested_fc = PAUSE_AUTONEG;
1759         else
1760                 return -EINVAL;
1761
1762         if (epause->rx_pause)
1763                 lc->requested_fc |= PAUSE_RX;
1764         if (epause->tx_pause)
1765                 lc->requested_fc |= PAUSE_TX;
1766         if (lc->autoneg == AUTONEG_ENABLE) {
1767                 if (netif_running(dev))
1768                         t3_link_start(&p->phy, &p->mac, lc);
1769         } else {
1770                 lc->fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
1771                 if (netif_running(dev))
1772                         t3_mac_set_speed_duplex_fc(&p->mac, -1, -1, lc->fc);
1773         }
1774         return 0;
1775 }
1776
1777 static u32 get_rx_csum(struct net_device *dev)
1778 {
1779         struct port_info *p = netdev_priv(dev);
1780
1781         return p->rx_offload & T3_RX_CSUM;
1782 }
1783
1784 static int set_rx_csum(struct net_device *dev, u32 data)
1785 {
1786         struct port_info *p = netdev_priv(dev);
1787
1788         if (data) {
1789                 p->rx_offload |= T3_RX_CSUM;
1790         } else {
1791                 int i;
1792
1793                 p->rx_offload &= ~(T3_RX_CSUM | T3_LRO);
1794                 for (i = p->first_qset; i < p->first_qset + p->nqsets; i++)
1795                         set_qset_lro(dev, i, 0);
1796         }
1797         return 0;
1798 }
1799
1800 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
1801 {
1802         struct port_info *pi = netdev_priv(dev);
1803         struct adapter *adapter = pi->adapter;
1804         const struct qset_params *q = &adapter->params.sge.qset[pi->first_qset];
1805
1806         e->rx_max_pending = MAX_RX_BUFFERS;
1807         e->rx_mini_max_pending = 0;
1808         e->rx_jumbo_max_pending = MAX_RX_JUMBO_BUFFERS;
1809         e->tx_max_pending = MAX_TXQ_ENTRIES;
1810
1811         e->rx_pending = q->fl_size;
1812         e->rx_mini_pending = q->rspq_size;
1813         e->rx_jumbo_pending = q->jumbo_size;
1814         e->tx_pending = q->txq_size[0];
1815 }
1816
1817 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
1818 {
1819         struct port_info *pi = netdev_priv(dev);
1820         struct adapter *adapter = pi->adapter;
1821         struct qset_params *q;
1822         int i;
1823
1824         if (e->rx_pending > MAX_RX_BUFFERS ||
1825             e->rx_jumbo_pending > MAX_RX_JUMBO_BUFFERS ||
1826             e->tx_pending > MAX_TXQ_ENTRIES ||
1827             e->rx_mini_pending > MAX_RSPQ_ENTRIES ||
1828             e->rx_mini_pending < MIN_RSPQ_ENTRIES ||
1829             e->rx_pending < MIN_FL_ENTRIES ||
1830             e->rx_jumbo_pending < MIN_FL_ENTRIES ||
1831             e->tx_pending < adapter->params.nports * MIN_TXQ_ENTRIES)
1832                 return -EINVAL;
1833
1834         if (adapter->flags & FULL_INIT_DONE)
1835                 return -EBUSY;
1836
1837         q = &adapter->params.sge.qset[pi->first_qset];
1838         for (i = 0; i < pi->nqsets; ++i, ++q) {
1839                 q->rspq_size = e->rx_mini_pending;
1840                 q->fl_size = e->rx_pending;
1841                 q->jumbo_size = e->rx_jumbo_pending;
1842                 q->txq_size[0] = e->tx_pending;
1843                 q->txq_size[1] = e->tx_pending;
1844                 q->txq_size[2] = e->tx_pending;
1845         }
1846         return 0;
1847 }
1848
1849 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
1850 {
1851         struct port_info *pi = netdev_priv(dev);
1852         struct adapter *adapter = pi->adapter;
1853         struct qset_params *qsp = &adapter->params.sge.qset[0];
1854         struct sge_qset *qs = &adapter->sge.qs[0];
1855
1856         if (c->rx_coalesce_usecs * 10 > M_NEWTIMER)
1857                 return -EINVAL;
1858
1859         qsp->coalesce_usecs = c->rx_coalesce_usecs;
1860         t3_update_qset_coalesce(qs, qsp);
1861         return 0;
1862 }
1863
1864 static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
1865 {
1866         struct port_info *pi = netdev_priv(dev);
1867         struct adapter *adapter = pi->adapter;
1868         struct qset_params *q = adapter->params.sge.qset;
1869
1870         c->rx_coalesce_usecs = q->coalesce_usecs;
1871         return 0;
1872 }
1873
1874 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e,
1875                       u8 * data)
1876 {
1877         struct port_info *pi = netdev_priv(dev);
1878         struct adapter *adapter = pi->adapter;
1879         int i, err = 0;
1880
1881         u8 *buf = kmalloc(EEPROMSIZE, GFP_KERNEL);
1882         if (!buf)
1883                 return -ENOMEM;
1884
1885         e->magic = EEPROM_MAGIC;
1886         for (i = e->offset & ~3; !err && i < e->offset + e->len; i += 4)
1887                 err = t3_seeprom_read(adapter, i, (__le32 *) & buf[i]);
1888
1889         if (!err)
1890                 memcpy(data, buf + e->offset, e->len);
1891         kfree(buf);
1892         return err;
1893 }
1894
1895 static int set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
1896                       u8 * data)
1897 {
1898         struct port_info *pi = netdev_priv(dev);
1899         struct adapter *adapter = pi->adapter;
1900         u32 aligned_offset, aligned_len;
1901         __le32 *p;
1902         u8 *buf;
1903         int err;
1904
1905         if (eeprom->magic != EEPROM_MAGIC)
1906                 return -EINVAL;
1907
1908         aligned_offset = eeprom->offset & ~3;
1909         aligned_len = (eeprom->len + (eeprom->offset & 3) + 3) & ~3;
1910
1911         if (aligned_offset != eeprom->offset || aligned_len != eeprom->len) {
1912                 buf = kmalloc(aligned_len, GFP_KERNEL);
1913                 if (!buf)
1914                         return -ENOMEM;
1915                 err = t3_seeprom_read(adapter, aligned_offset, (__le32 *) buf);
1916                 if (!err && aligned_len > 4)
1917                         err = t3_seeprom_read(adapter,
1918                                               aligned_offset + aligned_len - 4,
1919                                               (__le32 *) & buf[aligned_len - 4]);
1920                 if (err)
1921                         goto out;
1922                 memcpy(buf + (eeprom->offset & 3), data, eeprom->len);
1923         } else
1924                 buf = data;
1925
1926         err = t3_seeprom_wp(adapter, 0);
1927         if (err)
1928                 goto out;
1929
1930         for (p = (__le32 *) buf; !err && aligned_len; aligned_len -= 4, p++) {
1931                 err = t3_seeprom_write(adapter, aligned_offset, *p);
1932                 aligned_offset += 4;
1933         }
1934
1935         if (!err)
1936                 err = t3_seeprom_wp(adapter, 1);
1937 out:
1938         if (buf != data)
1939                 kfree(buf);
1940         return err;
1941 }
1942
1943 static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1944 {
1945         wol->supported = 0;
1946         wol->wolopts = 0;
1947         memset(&wol->sopass, 0, sizeof(wol->sopass));
1948 }
1949
1950 static const struct ethtool_ops cxgb_ethtool_ops = {
1951         .get_settings = get_settings,
1952         .set_settings = set_settings,
1953         .get_drvinfo = get_drvinfo,
1954         .get_msglevel = get_msglevel,
1955         .set_msglevel = set_msglevel,
1956         .get_ringparam = get_sge_param,
1957         .set_ringparam = set_sge_param,
1958         .get_coalesce = get_coalesce,
1959         .set_coalesce = set_coalesce,
1960         .get_eeprom_len = get_eeprom_len,
1961         .get_eeprom = get_eeprom,
1962         .set_eeprom = set_eeprom,
1963         .get_pauseparam = get_pauseparam,
1964         .set_pauseparam = set_pauseparam,
1965         .get_rx_csum = get_rx_csum,
1966         .set_rx_csum = set_rx_csum,
1967         .set_tx_csum = ethtool_op_set_tx_csum,
1968         .set_sg = ethtool_op_set_sg,
1969         .get_link = ethtool_op_get_link,
1970         .get_strings = get_strings,
1971         .phys_id = cxgb3_phys_id,
1972         .nway_reset = restart_autoneg,
1973         .get_sset_count = get_sset_count,
1974         .get_ethtool_stats = get_stats,
1975         .get_regs_len = get_regs_len,
1976         .get_regs = get_regs,
1977         .get_wol = get_wol,
1978         .set_tso = ethtool_op_set_tso,
1979 };
1980
1981 static int in_range(int val, int lo, int hi)
1982 {
1983         return val < 0 || (val <= hi && val >= lo);
1984 }
1985
1986 static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr)
1987 {
1988         struct port_info *pi = netdev_priv(dev);
1989         struct adapter *adapter = pi->adapter;
1990         u32 cmd;
1991         int ret;
1992
1993         if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
1994                 return -EFAULT;
1995
1996         switch (cmd) {
1997         case CHELSIO_SET_QSET_PARAMS:{
1998                 int i;
1999                 struct qset_params *q;
2000                 struct ch_qset_params t;
2001                 int q1 = pi->first_qset;
2002                 int nqsets = pi->nqsets;
2003
2004                 if (!capable(CAP_NET_ADMIN))
2005                         return -EPERM;
2006                 if (copy_from_user(&t, useraddr, sizeof(t)))
2007                         return -EFAULT;
2008                 if (t.qset_idx >= SGE_QSETS)
2009                         return -EINVAL;
2010                 if (!in_range(t.intr_lat, 0, M_NEWTIMER) ||
2011                         !in_range(t.cong_thres, 0, 255) ||
2012                         !in_range(t.txq_size[0], MIN_TXQ_ENTRIES,
2013                                 MAX_TXQ_ENTRIES) ||
2014                         !in_range(t.txq_size[1], MIN_TXQ_ENTRIES,
2015                                 MAX_TXQ_ENTRIES) ||
2016                         !in_range(t.txq_size[2], MIN_CTRL_TXQ_ENTRIES,
2017                                 MAX_CTRL_TXQ_ENTRIES) ||
2018                         !in_range(t.fl_size[0], MIN_FL_ENTRIES,
2019                                 MAX_RX_BUFFERS)
2020                         || !in_range(t.fl_size[1], MIN_FL_ENTRIES,
2021                                         MAX_RX_JUMBO_BUFFERS)
2022                         || !in_range(t.rspq_size, MIN_RSPQ_ENTRIES,
2023                                         MAX_RSPQ_ENTRIES))
2024                         return -EINVAL;
2025
2026                 if ((adapter->flags & FULL_INIT_DONE) && t.lro > 0)
2027                         for_each_port(adapter, i) {
2028                                 pi = adap2pinfo(adapter, i);
2029                                 if (t.qset_idx >= pi->first_qset &&
2030                                     t.qset_idx < pi->first_qset + pi->nqsets &&
2031                                     !(pi->rx_offload & T3_RX_CSUM))
2032                                         return -EINVAL;
2033                         }
2034
2035                 if ((adapter->flags & FULL_INIT_DONE) &&
2036                         (t.rspq_size >= 0 || t.fl_size[0] >= 0 ||
2037                         t.fl_size[1] >= 0 || t.txq_size[0] >= 0 ||
2038                         t.txq_size[1] >= 0 || t.txq_size[2] >= 0 ||
2039                         t.polling >= 0 || t.cong_thres >= 0))
2040                         return -EBUSY;
2041
2042                 /* Allow setting of any available qset when offload enabled */
2043                 if (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) {
2044                         q1 = 0;
2045                         for_each_port(adapter, i) {
2046                                 pi = adap2pinfo(adapter, i);
2047                                 nqsets += pi->first_qset + pi->nqsets;
2048                         }
2049                 }
2050
2051                 if (t.qset_idx < q1)
2052                         return -EINVAL;
2053                 if (t.qset_idx > q1 + nqsets - 1)
2054                         return -EINVAL;
2055
2056                 q = &adapter->params.sge.qset[t.qset_idx];
2057
2058                 if (t.rspq_size >= 0)
2059                         q->rspq_size = t.rspq_size;
2060                 if (t.fl_size[0] >= 0)
2061                         q->fl_size = t.fl_size[0];
2062                 if (t.fl_size[1] >= 0)
2063                         q->jumbo_size = t.fl_size[1];
2064                 if (t.txq_size[0] >= 0)
2065                         q->txq_size[0] = t.txq_size[0];
2066                 if (t.txq_size[1] >= 0)
2067                         q->txq_size[1] = t.txq_size[1];
2068                 if (t.txq_size[2] >= 0)
2069                         q->txq_size[2] = t.txq_size[2];
2070                 if (t.cong_thres >= 0)
2071                         q->cong_thres = t.cong_thres;
2072                 if (t.intr_lat >= 0) {
2073                         struct sge_qset *qs =
2074                                 &adapter->sge.qs[t.qset_idx];
2075
2076                         q->coalesce_usecs = t.intr_lat;
2077                         t3_update_qset_coalesce(qs, q);
2078                 }
2079                 if (t.polling >= 0) {
2080                         if (adapter->flags & USING_MSIX)
2081                                 q->polling = t.polling;
2082                         else {
2083                                 /* No polling with INTx for T3A */
2084                                 if (adapter->params.rev == 0 &&
2085                                         !(adapter->flags & USING_MSI))
2086                                         t.polling = 0;
2087
2088                                 for (i = 0; i < SGE_QSETS; i++) {
2089                                         q = &adapter->params.sge.
2090                                                 qset[i];
2091                                         q->polling = t.polling;
2092                                 }
2093                         }
2094                 }
2095                 if (t.lro >= 0)
2096                         set_qset_lro(dev, t.qset_idx, t.lro);
2097
2098                 break;
2099         }
2100         case CHELSIO_GET_QSET_PARAMS:{
2101                 struct qset_params *q;
2102                 struct ch_qset_params t;
2103                 int q1 = pi->first_qset;
2104                 int nqsets = pi->nqsets;
2105                 int i;
2106
2107                 if (copy_from_user(&t, useraddr, sizeof(t)))
2108                         return -EFAULT;
2109
2110                 /* Display qsets for all ports when offload enabled */
2111                 if (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) {
2112                         q1 = 0;
2113                         for_each_port(adapter, i) {
2114                                 pi = adap2pinfo(adapter, i);
2115                                 nqsets = pi->first_qset + pi->nqsets;
2116                         }
2117                 }
2118
2119                 if (t.qset_idx >= nqsets)
2120                         return -EINVAL;
2121
2122                 q = &adapter->params.sge.qset[q1 + t.qset_idx];
2123                 t.rspq_size = q->rspq_size;
2124                 t.txq_size[0] = q->txq_size[0];
2125                 t.txq_size[1] = q->txq_size[1];
2126                 t.txq_size[2] = q->txq_size[2];
2127                 t.fl_size[0] = q->fl_size;
2128                 t.fl_size[1] = q->jumbo_size;
2129                 t.polling = q->polling;
2130                 t.lro = q->lro;
2131                 t.intr_lat = q->coalesce_usecs;
2132                 t.cong_thres = q->cong_thres;
2133                 t.qnum = q1;
2134
2135                 if (adapter->flags & USING_MSIX)
2136                         t.vector = adapter->msix_info[q1 + t.qset_idx + 1].vec;
2137                 else
2138                         t.vector = adapter->pdev->irq;
2139
2140                 if (copy_to_user(useraddr, &t, sizeof(t)))
2141                         return -EFAULT;
2142                 break;
2143         }
2144         case CHELSIO_SET_QSET_NUM:{
2145                 struct ch_reg edata;
2146                 unsigned int i, first_qset = 0, other_qsets = 0;
2147
2148                 if (!capable(CAP_NET_ADMIN))
2149                         return -EPERM;
2150                 if (adapter->flags & FULL_INIT_DONE)
2151                         return -EBUSY;
2152                 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2153                         return -EFAULT;
2154                 if (edata.val < 1 ||
2155                         (edata.val > 1 && !(adapter->flags & USING_MSIX)))
2156                         return -EINVAL;
2157
2158                 for_each_port(adapter, i)
2159                         if (adapter->port[i] && adapter->port[i] != dev)
2160                                 other_qsets += adap2pinfo(adapter, i)->nqsets;
2161
2162                 if (edata.val + other_qsets > SGE_QSETS)
2163                         return -EINVAL;
2164
2165                 pi->nqsets = edata.val;
2166
2167                 for_each_port(adapter, i)
2168                         if (adapter->port[i]) {
2169                                 pi = adap2pinfo(adapter, i);
2170                                 pi->first_qset = first_qset;
2171                                 first_qset += pi->nqsets;
2172                         }
2173                 break;
2174         }
2175         case CHELSIO_GET_QSET_NUM:{
2176                 struct ch_reg edata;
2177
2178                 edata.cmd = CHELSIO_GET_QSET_NUM;
2179                 edata.val = pi->nqsets;
2180                 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2181                         return -EFAULT;
2182                 break;
2183         }
2184         case CHELSIO_LOAD_FW:{
2185                 u8 *fw_data;
2186                 struct ch_mem_range t;
2187
2188                 if (!capable(CAP_SYS_RAWIO))
2189                         return -EPERM;
2190                 if (copy_from_user(&t, useraddr, sizeof(t)))
2191                         return -EFAULT;
2192                 /* Check t.len sanity ? */
2193                 fw_data = kmalloc(t.len, GFP_KERNEL);
2194                 if (!fw_data)
2195                         return -ENOMEM;
2196
2197                 if (copy_from_user
2198                         (fw_data, useraddr + sizeof(t), t.len)) {
2199                         kfree(fw_data);
2200                         return -EFAULT;
2201                 }
2202
2203                 ret = t3_load_fw(adapter, fw_data, t.len);
2204                 kfree(fw_data);
2205                 if (ret)
2206                         return ret;
2207                 break;
2208         }
2209         case CHELSIO_SETMTUTAB:{
2210                 struct ch_mtus m;
2211                 int i;
2212
2213                 if (!is_offload(adapter))
2214                         return -EOPNOTSUPP;
2215                 if (!capable(CAP_NET_ADMIN))
2216                         return -EPERM;
2217                 if (offload_running(adapter))
2218                         return -EBUSY;
2219                 if (copy_from_user(&m, useraddr, sizeof(m)))
2220                         return -EFAULT;
2221                 if (m.nmtus != NMTUS)
2222                         return -EINVAL;
2223                 if (m.mtus[0] < 81)     /* accommodate SACK */
2224                         return -EINVAL;
2225
2226                 /* MTUs must be in ascending order */
2227                 for (i = 1; i < NMTUS; ++i)
2228                         if (m.mtus[i] < m.mtus[i - 1])
2229                                 return -EINVAL;
2230
2231                 memcpy(adapter->params.mtus, m.mtus,
2232                         sizeof(adapter->params.mtus));
2233                 break;
2234         }
2235         case CHELSIO_GET_PM:{
2236                 struct tp_params *p = &adapter->params.tp;
2237                 struct ch_pm m = {.cmd = CHELSIO_GET_PM };
2238
2239                 if (!is_offload(adapter))
2240                         return -EOPNOTSUPP;
2241                 m.tx_pg_sz = p->tx_pg_size;
2242                 m.tx_num_pg = p->tx_num_pgs;
2243                 m.rx_pg_sz = p->rx_pg_size;
2244                 m.rx_num_pg = p->rx_num_pgs;
2245                 m.pm_total = p->pmtx_size + p->chan_rx_size * p->nchan;
2246                 if (copy_to_user(useraddr, &m, sizeof(m)))
2247                         return -EFAULT;
2248                 break;
2249         }
2250         case CHELSIO_SET_PM:{
2251                 struct ch_pm m;
2252                 struct tp_params *p = &adapter->params.tp;
2253
2254                 if (!is_offload(adapter))
2255                         return -EOPNOTSUPP;
2256                 if (!capable(CAP_NET_ADMIN))
2257                         return -EPERM;
2258                 if (adapter->flags & FULL_INIT_DONE)
2259                         return -EBUSY;
2260                 if (copy_from_user(&m, useraddr, sizeof(m)))
2261                         return -EFAULT;
2262                 if (!is_power_of_2(m.rx_pg_sz) ||
2263                         !is_power_of_2(m.tx_pg_sz))
2264                         return -EINVAL; /* not power of 2 */
2265                 if (!(m.rx_pg_sz & 0x14000))
2266                         return -EINVAL; /* not 16KB or 64KB */
2267                 if (!(m.tx_pg_sz & 0x1554000))
2268                         return -EINVAL;
2269                 if (m.tx_num_pg == -1)
2270                         m.tx_num_pg = p->tx_num_pgs;
2271                 if (m.rx_num_pg == -1)
2272                         m.rx_num_pg = p->rx_num_pgs;
2273                 if (m.tx_num_pg % 24 || m.rx_num_pg % 24)
2274                         return -EINVAL;
2275                 if (m.rx_num_pg * m.rx_pg_sz > p->chan_rx_size ||
2276                         m.tx_num_pg * m.tx_pg_sz > p->chan_tx_size)
2277                         return -EINVAL;
2278                 p->rx_pg_size = m.rx_pg_sz;
2279                 p->tx_pg_size = m.tx_pg_sz;
2280                 p->rx_num_pgs = m.rx_num_pg;
2281                 p->tx_num_pgs = m.tx_num_pg;
2282                 break;
2283         }
2284         case CHELSIO_GET_MEM:{
2285                 struct ch_mem_range t;
2286                 struct mc7 *mem;
2287                 u64 buf[32];
2288
2289                 if (!is_offload(adapter))
2290                         return -EOPNOTSUPP;
2291                 if (!(adapter->flags & FULL_INIT_DONE))
2292                         return -EIO;    /* need the memory controllers */
2293                 if (copy_from_user(&t, useraddr, sizeof(t)))
2294                         return -EFAULT;
2295                 if ((t.addr & 7) || (t.len & 7))
2296                         return -EINVAL;
2297                 if (t.mem_id == MEM_CM)
2298                         mem = &adapter->cm;
2299                 else if (t.mem_id == MEM_PMRX)
2300                         mem = &adapter->pmrx;
2301                 else if (t.mem_id == MEM_PMTX)
2302                         mem = &adapter->pmtx;
2303                 else
2304                         return -EINVAL;
2305
2306                 /*
2307                  * Version scheme:
2308                  * bits 0..9: chip version
2309                  * bits 10..15: chip revision
2310                  */
2311                 t.version = 3 | (adapter->params.rev << 10);
2312                 if (copy_to_user(useraddr, &t, sizeof(t)))
2313                         return -EFAULT;
2314
2315                 /*
2316                  * Read 256 bytes at a time as len can be large and we don't
2317                  * want to use huge intermediate buffers.
2318                  */
2319                 useraddr += sizeof(t);  /* advance to start of buffer */
2320                 while (t.len) {
2321                         unsigned int chunk =
2322                                 min_t(unsigned int, t.len, sizeof(buf));
2323
2324                         ret =
2325                                 t3_mc7_bd_read(mem, t.addr / 8, chunk / 8,
2326                                                 buf);
2327                         if (ret)
2328                                 return ret;
2329                         if (copy_to_user(useraddr, buf, chunk))
2330                                 return -EFAULT;
2331                         useraddr += chunk;
2332                         t.addr += chunk;
2333                         t.len -= chunk;
2334                 }
2335                 break;
2336         }
2337         case CHELSIO_SET_TRACE_FILTER:{
2338                 struct ch_trace t;
2339                 const struct trace_params *tp;
2340
2341                 if (!capable(CAP_NET_ADMIN))
2342                         return -EPERM;
2343                 if (!offload_running(adapter))
2344                         return -EAGAIN;
2345                 if (copy_from_user(&t, useraddr, sizeof(t)))
2346                         return -EFAULT;
2347
2348                 tp = (const struct trace_params *)&t.sip;
2349                 if (t.config_tx)
2350                         t3_config_trace_filter(adapter, tp, 0,
2351                                                 t.invert_match,
2352                                                 t.trace_tx);
2353                 if (t.config_rx)
2354                         t3_config_trace_filter(adapter, tp, 1,
2355                                                 t.invert_match,
2356                                                 t.trace_rx);
2357                 break;
2358         }
2359         default:
2360                 return -EOPNOTSUPP;
2361         }
2362         return 0;
2363 }
2364
2365 static int cxgb_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
2366 {
2367         struct mii_ioctl_data *data = if_mii(req);
2368         struct port_info *pi = netdev_priv(dev);
2369         struct adapter *adapter = pi->adapter;
2370
2371         switch (cmd) {
2372         case SIOCGMIIREG:
2373         case SIOCSMIIREG:
2374                 /* Convert phy_id from older PRTAD/DEVAD format */
2375                 if (is_10G(adapter) &&
2376                     !mdio_phy_id_is_c45(data->phy_id) &&
2377                     (data->phy_id & 0x1f00) &&
2378                     !(data->phy_id & 0xe0e0))
2379                         data->phy_id = mdio_phy_id_c45(data->phy_id >> 8,
2380                                                        data->phy_id & 0x1f);
2381                 /* FALLTHRU */
2382         case SIOCGMIIPHY:
2383                 return mdio_mii_ioctl(&pi->phy.mdio, data, cmd);
2384         case SIOCCHIOCTL:
2385                 return cxgb_extension_ioctl(dev, req->ifr_data);
2386         default:
2387                 return -EOPNOTSUPP;
2388         }
2389 }
2390
2391 static int cxgb_change_mtu(struct net_device *dev, int new_mtu)
2392 {
2393         struct port_info *pi = netdev_priv(dev);
2394         struct adapter *adapter = pi->adapter;
2395         int ret;
2396
2397         if (new_mtu < 81)       /* accommodate SACK */
2398                 return -EINVAL;
2399         if ((ret = t3_mac_set_mtu(&pi->mac, new_mtu)))
2400                 return ret;
2401         dev->mtu = new_mtu;
2402         init_port_mtus(adapter);
2403         if (adapter->params.rev == 0 && offload_running(adapter))
2404                 t3_load_mtus(adapter, adapter->params.mtus,
2405                              adapter->params.a_wnd, adapter->params.b_wnd,
2406                              adapter->port[0]->mtu);
2407         return 0;
2408 }
2409
2410 static int cxgb_set_mac_addr(struct net_device *dev, void *p)
2411 {
2412         struct port_info *pi = netdev_priv(dev);
2413         struct adapter *adapter = pi->adapter;
2414         struct sockaddr *addr = p;
2415
2416         if (!is_valid_ether_addr(addr->sa_data))
2417                 return -EINVAL;
2418
2419         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
2420         t3_mac_set_address(&pi->mac, 0, dev->dev_addr);
2421         if (offload_running(adapter))
2422                 write_smt_entry(adapter, pi->port_id);
2423         return 0;
2424 }
2425
2426 /**
2427  * t3_synchronize_rx - wait for current Rx processing on a port to complete
2428  * @adap: the adapter
2429  * @p: the port
2430  *
2431  * Ensures that current Rx processing on any of the queues associated with
2432  * the given port completes before returning.  We do this by acquiring and
2433  * releasing the locks of the response queues associated with the port.
2434  */
2435 static void t3_synchronize_rx(struct adapter *adap, const struct port_info *p)
2436 {
2437         int i;
2438
2439         for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) {
2440                 struct sge_rspq *q = &adap->sge.qs[i].rspq;
2441
2442                 spin_lock_irq(&q->lock);
2443                 spin_unlock_irq(&q->lock);
2444         }
2445 }
2446
2447 static void vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
2448 {
2449         struct port_info *pi = netdev_priv(dev);
2450         struct adapter *adapter = pi->adapter;
2451
2452         pi->vlan_grp = grp;
2453         if (adapter->params.rev > 0)
2454                 t3_set_vlan_accel(adapter, 1 << pi->port_id, grp != NULL);
2455         else {
2456                 /* single control for all ports */
2457                 unsigned int i, have_vlans = 0;
2458                 for_each_port(adapter, i)
2459                     have_vlans |= adap2pinfo(adapter, i)->vlan_grp != NULL;
2460
2461                 t3_set_vlan_accel(adapter, 1, have_vlans);
2462         }
2463         t3_synchronize_rx(adapter, pi);
2464 }
2465
2466 #ifdef CONFIG_NET_POLL_CONTROLLER
2467 static void cxgb_netpoll(struct net_device *dev)
2468 {
2469         struct port_info *pi = netdev_priv(dev);
2470         struct adapter *adapter = pi->adapter;
2471         int qidx;
2472
2473         for (qidx = pi->first_qset; qidx < pi->first_qset + pi->nqsets; qidx++) {
2474                 struct sge_qset *qs = &adapter->sge.qs[qidx];
2475                 void *source;
2476
2477                 if (adapter->flags & USING_MSIX)
2478                         source = qs;
2479                 else
2480                         source = adapter;
2481
2482                 t3_intr_handler(adapter, qs->rspq.polling) (0, source);
2483         }
2484 }
2485 #endif
2486
2487 /*
2488  * Periodic accumulation of MAC statistics.
2489  */
2490 static void mac_stats_update(struct adapter *adapter)
2491 {
2492         int i;
2493
2494         for_each_port(adapter, i) {
2495                 struct net_device *dev = adapter->port[i];
2496                 struct port_info *p = netdev_priv(dev);
2497
2498                 if (netif_running(dev)) {
2499                         spin_lock(&adapter->stats_lock);
2500                         t3_mac_update_stats(&p->mac);
2501                         spin_unlock(&adapter->stats_lock);
2502                 }
2503         }
2504 }
2505
2506 static void check_link_status(struct adapter *adapter)
2507 {
2508         int i;
2509
2510         for_each_port(adapter, i) {
2511                 struct net_device *dev = adapter->port[i];
2512                 struct port_info *p = netdev_priv(dev);
2513                 int link_fault;
2514
2515                 spin_lock_irq(&adapter->work_lock);
2516                 link_fault = p->link_fault;
2517                 spin_unlock_irq(&adapter->work_lock);
2518
2519                 if (link_fault) {
2520                         t3_link_fault(adapter, i);
2521                         continue;
2522                 }
2523
2524                 if (!(p->phy.caps & SUPPORTED_IRQ) && netif_running(dev)) {
2525                         t3_xgm_intr_disable(adapter, i);
2526                         t3_read_reg(adapter, A_XGM_INT_STATUS + p->mac.offset);
2527
2528                         t3_link_changed(adapter, i);
2529                         t3_xgm_intr_enable(adapter, i);
2530                 }
2531         }
2532 }
2533
2534 static void check_t3b2_mac(struct adapter *adapter)
2535 {
2536         int i;
2537
2538         if (!rtnl_trylock())    /* synchronize with ifdown */
2539                 return;
2540
2541         for_each_port(adapter, i) {
2542                 struct net_device *dev = adapter->port[i];
2543                 struct port_info *p = netdev_priv(dev);
2544                 int status;
2545
2546                 if (!netif_running(dev))
2547                         continue;
2548
2549                 status = 0;
2550                 if (netif_running(dev) && netif_carrier_ok(dev))
2551                         status = t3b2_mac_watchdog_task(&p->mac);
2552                 if (status == 1)
2553                         p->mac.stats.num_toggled++;
2554                 else if (status == 2) {
2555                         struct cmac *mac = &p->mac;
2556
2557                         t3_mac_set_mtu(mac, dev->mtu);
2558                         t3_mac_set_address(mac, 0, dev->dev_addr);
2559                         cxgb_set_rxmode(dev);
2560                         t3_link_start(&p->phy, mac, &p->link_config);
2561                         t3_mac_enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
2562                         t3_port_intr_enable(adapter, p->port_id);
2563                         p->mac.stats.num_resets++;
2564                 }
2565         }
2566         rtnl_unlock();
2567 }
2568
2569
2570 static void t3_adap_check_task(struct work_struct *work)
2571 {
2572         struct adapter *adapter = container_of(work, struct adapter,
2573                                                adap_check_task.work);
2574         const struct adapter_params *p = &adapter->params;
2575         int port;
2576         unsigned int v, status, reset;
2577
2578         adapter->check_task_cnt++;
2579
2580         check_link_status(adapter);
2581
2582         /* Accumulate MAC stats if needed */
2583         if (!p->linkpoll_period ||
2584             (adapter->check_task_cnt * p->linkpoll_period) / 10 >=
2585             p->stats_update_period) {
2586                 mac_stats_update(adapter);
2587                 adapter->check_task_cnt = 0;
2588         }
2589
2590         if (p->rev == T3_REV_B2)
2591                 check_t3b2_mac(adapter);
2592
2593         /*
2594          * Scan the XGMAC's to check for various conditions which we want to
2595          * monitor in a periodic polling manner rather than via an interrupt
2596          * condition.  This is used for conditions which would otherwise flood
2597          * the system with interrupts and we only really need to know that the
2598          * conditions are "happening" ...  For each condition we count the
2599          * detection of the condition and reset it for the next polling loop.
2600          */
2601         for_each_port(adapter, port) {
2602                 struct cmac *mac =  &adap2pinfo(adapter, port)->mac;
2603                 u32 cause;
2604
2605                 cause = t3_read_reg(adapter, A_XGM_INT_CAUSE + mac->offset);
2606                 reset = 0;
2607                 if (cause & F_RXFIFO_OVERFLOW) {
2608                         mac->stats.rx_fifo_ovfl++;
2609                         reset |= F_RXFIFO_OVERFLOW;
2610                 }
2611
2612                 t3_write_reg(adapter, A_XGM_INT_CAUSE + mac->offset, reset);
2613         }
2614
2615         /*
2616          * We do the same as above for FL_EMPTY interrupts.
2617          */
2618         status = t3_read_reg(adapter, A_SG_INT_CAUSE);
2619         reset = 0;
2620
2621         if (status & F_FLEMPTY) {
2622                 struct sge_qset *qs = &adapter->sge.qs[0];
2623                 int i = 0;
2624
2625                 reset |= F_FLEMPTY;
2626
2627                 v = (t3_read_reg(adapter, A_SG_RSPQ_FL_STATUS) >> S_FL0EMPTY) &
2628                     0xffff;
2629
2630                 while (v) {
2631                         qs->fl[i].empty += (v & 1);
2632                         if (i)
2633                                 qs++;
2634                         i ^= 1;
2635                         v >>= 1;
2636                 }
2637         }
2638
2639         t3_write_reg(adapter, A_SG_INT_CAUSE, reset);
2640
2641         /* Schedule the next check update if any port is active. */
2642         spin_lock_irq(&adapter->work_lock);
2643         if (adapter->open_device_map & PORT_MASK)
2644                 schedule_chk_task(adapter);
2645         spin_unlock_irq(&adapter->work_lock);
2646 }
2647
2648 /*
2649  * Processes external (PHY) interrupts in process context.
2650  */
2651 static void ext_intr_task(struct work_struct *work)
2652 {
2653         struct adapter *adapter = container_of(work, struct adapter,
2654                                                ext_intr_handler_task);
2655         int i;
2656
2657         /* Disable link fault interrupts */
2658         for_each_port(adapter, i) {
2659                 struct net_device *dev = adapter->port[i];
2660                 struct port_info *p = netdev_priv(dev);
2661
2662                 t3_xgm_intr_disable(adapter, i);
2663                 t3_read_reg(adapter, A_XGM_INT_STATUS + p->mac.offset);
2664         }
2665
2666         /* Re-enable link fault interrupts */
2667         t3_phy_intr_handler(adapter);
2668
2669         for_each_port(adapter, i)
2670                 t3_xgm_intr_enable(adapter, i);
2671
2672         /* Now reenable external interrupts */
2673         spin_lock_irq(&adapter->work_lock);
2674         if (adapter->slow_intr_mask) {
2675                 adapter->slow_intr_mask |= F_T3DBG;
2676                 t3_write_reg(adapter, A_PL_INT_CAUSE0, F_T3DBG);
2677                 t3_write_reg(adapter, A_PL_INT_ENABLE0,
2678                              adapter->slow_intr_mask);
2679         }
2680         spin_unlock_irq(&adapter->work_lock);
2681 }
2682
2683 /*
2684  * Interrupt-context handler for external (PHY) interrupts.
2685  */
2686 void t3_os_ext_intr_handler(struct adapter *adapter)
2687 {
2688         /*
2689          * Schedule a task to handle external interrupts as they may be slow
2690          * and we use a mutex to protect MDIO registers.  We disable PHY
2691          * interrupts in the meantime and let the task reenable them when
2692          * it's done.
2693          */
2694         spin_lock(&adapter->work_lock);
2695         if (adapter->slow_intr_mask) {
2696                 adapter->slow_intr_mask &= ~F_T3DBG;
2697                 t3_write_reg(adapter, A_PL_INT_ENABLE0,
2698                              adapter->slow_intr_mask);
2699                 queue_work(cxgb3_wq, &adapter->ext_intr_handler_task);
2700         }
2701         spin_unlock(&adapter->work_lock);
2702 }
2703
2704 void t3_os_link_fault_handler(struct adapter *adapter, int port_id)
2705 {
2706         struct net_device *netdev = adapter->port[port_id];
2707         struct port_info *pi = netdev_priv(netdev);
2708
2709         spin_lock(&adapter->work_lock);
2710         pi->link_fault = 1;
2711         spin_unlock(&adapter->work_lock);
2712 }
2713
2714 static int t3_adapter_error(struct adapter *adapter, int reset)
2715 {
2716         int i, ret = 0;
2717
2718         if (is_offload(adapter) &&
2719             test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) {
2720                 cxgb3_err_notify(&adapter->tdev, OFFLOAD_STATUS_DOWN, 0);
2721                 offload_close(&adapter->tdev);
2722         }
2723
2724         /* Stop all ports */
2725         for_each_port(adapter, i) {
2726                 struct net_device *netdev = adapter->port[i];
2727
2728                 if (netif_running(netdev))
2729                         cxgb_close(netdev);
2730         }
2731
2732         /* Stop SGE timers */
2733         t3_stop_sge_timers(adapter);
2734
2735         adapter->flags &= ~FULL_INIT_DONE;
2736
2737         if (reset)
2738                 ret = t3_reset_adapter(adapter);
2739
2740         pci_disable_device(adapter->pdev);
2741
2742         return ret;
2743 }
2744
2745 static int t3_reenable_adapter(struct adapter *adapter)
2746 {
2747         if (pci_enable_device(adapter->pdev)) {
2748                 dev_err(&adapter->pdev->dev,
2749                         "Cannot re-enable PCI device after reset.\n");
2750                 goto err;
2751         }
2752         pci_set_master(adapter->pdev);
2753         pci_restore_state(adapter->pdev);
2754
2755         /* Free sge resources */
2756         t3_free_sge_resources(adapter);
2757
2758         if (t3_replay_prep_adapter(adapter))
2759                 goto err;
2760
2761         return 0;
2762 err:
2763         return -1;
2764 }
2765
2766 static void t3_resume_ports(struct adapter *adapter)
2767 {
2768         int i;
2769
2770         /* Restart the ports */
2771         for_each_port(adapter, i) {
2772                 struct net_device *netdev = adapter->port[i];
2773
2774                 if (netif_running(netdev)) {
2775                         if (cxgb_open(netdev)) {
2776                                 dev_err(&adapter->pdev->dev,
2777                                         "can't bring device back up"
2778                                         " after reset\n");
2779                                 continue;
2780                         }
2781                 }
2782         }
2783
2784         if (is_offload(adapter) && !ofld_disable)
2785                 cxgb3_err_notify(&adapter->tdev, OFFLOAD_STATUS_UP, 0);
2786 }
2787
2788 /*
2789  * processes a fatal error.
2790  * Bring the ports down, reset the chip, bring the ports back up.
2791  */
2792 static void fatal_error_task(struct work_struct *work)
2793 {
2794         struct adapter *adapter = container_of(work, struct adapter,
2795                                                fatal_error_handler_task);
2796         int err = 0;
2797
2798         rtnl_lock();
2799         err = t3_adapter_error(adapter, 1);
2800         if (!err)
2801                 err = t3_reenable_adapter(adapter);
2802         if (!err)
2803                 t3_resume_ports(adapter);
2804
2805         CH_ALERT(adapter, "adapter reset %s\n", err ? "failed" : "succeeded");
2806         rtnl_unlock();
2807 }
2808
2809 void t3_fatal_err(struct adapter *adapter)
2810 {
2811         unsigned int fw_status[4];
2812
2813         if (adapter->flags & FULL_INIT_DONE) {
2814                 t3_sge_stop(adapter);
2815                 t3_write_reg(adapter, A_XGM_TX_CTRL, 0);
2816                 t3_write_reg(adapter, A_XGM_RX_CTRL, 0);
2817                 t3_write_reg(adapter, XGM_REG(A_XGM_TX_CTRL, 1), 0);
2818                 t3_write_reg(adapter, XGM_REG(A_XGM_RX_CTRL, 1), 0);
2819
2820                 spin_lock(&adapter->work_lock);
2821                 t3_intr_disable(adapter);
2822                 queue_work(cxgb3_wq, &adapter->fatal_error_handler_task);
2823                 spin_unlock(&adapter->work_lock);
2824         }
2825         CH_ALERT(adapter, "encountered fatal error, operation suspended\n");
2826         if (!t3_cim_ctl_blk_read(adapter, 0xa0, 4, fw_status))
2827                 CH_ALERT(adapter, "FW status: 0x%x, 0x%x, 0x%x, 0x%x\n",
2828                          fw_status[0], fw_status[1],
2829                          fw_status[2], fw_status[3]);
2830 }
2831
2832 /**
2833  * t3_io_error_detected - called when PCI error is detected
2834  * @pdev: Pointer to PCI device
2835  * @state: The current pci connection state
2836  *
2837  * This function is called after a PCI bus error affecting
2838  * this device has been detected.
2839  */
2840 static pci_ers_result_t t3_io_error_detected(struct pci_dev *pdev,
2841                                              pci_channel_state_t state)
2842 {
2843         struct adapter *adapter = pci_get_drvdata(pdev);
2844         int ret;
2845
2846         if (state == pci_channel_io_perm_failure)
2847                 return PCI_ERS_RESULT_DISCONNECT;
2848
2849         ret = t3_adapter_error(adapter, 0);
2850
2851         /* Request a slot reset. */
2852         return PCI_ERS_RESULT_NEED_RESET;
2853 }
2854
2855 /**
2856  * t3_io_slot_reset - called after the pci bus has been reset.
2857  * @pdev: Pointer to PCI device
2858  *
2859  * Restart the card from scratch, as if from a cold-boot.
2860  */
2861 static pci_ers_result_t t3_io_slot_reset(struct pci_dev *pdev)
2862 {
2863         struct adapter *adapter = pci_get_drvdata(pdev);
2864
2865         if (!t3_reenable_adapter(adapter))
2866                 return PCI_ERS_RESULT_RECOVERED;
2867
2868         return PCI_ERS_RESULT_DISCONNECT;
2869 }
2870
2871 /**
2872  * t3_io_resume - called when traffic can start flowing again.
2873  * @pdev: Pointer to PCI device
2874  *
2875  * This callback is called when the error recovery driver tells us that
2876  * its OK to resume normal operation.
2877  */
2878 static void t3_io_resume(struct pci_dev *pdev)
2879 {
2880         struct adapter *adapter = pci_get_drvdata(pdev);
2881
2882         CH_ALERT(adapter, "adapter recovering, PEX ERR 0x%x\n",
2883                  t3_read_reg(adapter, A_PCIE_PEX_ERR));
2884
2885         t3_resume_ports(adapter);
2886 }
2887
2888 static struct pci_error_handlers t3_err_handler = {
2889         .error_detected = t3_io_error_detected,
2890         .slot_reset = t3_io_slot_reset,
2891         .resume = t3_io_resume,
2892 };
2893
2894 /*
2895  * Set the number of qsets based on the number of CPUs and the number of ports,
2896  * not to exceed the number of available qsets, assuming there are enough qsets
2897  * per port in HW.
2898  */
2899 static void set_nqsets(struct adapter *adap)
2900 {
2901         int i, j = 0;
2902         int num_cpus = num_online_cpus();
2903         int hwports = adap->params.nports;
2904         int nqsets = adap->msix_nvectors - 1;
2905
2906         if (adap->params.rev > 0 && adap->flags & USING_MSIX) {
2907                 if (hwports == 2 &&
2908                     (hwports * nqsets > SGE_QSETS ||
2909                      num_cpus >= nqsets / hwports))
2910                         nqsets /= hwports;
2911                 if (nqsets > num_cpus)
2912                         nqsets = num_cpus;
2913                 if (nqsets < 1 || hwports == 4)
2914                         nqsets = 1;
2915         } else
2916                 nqsets = 1;
2917
2918         for_each_port(adap, i) {
2919                 struct port_info *pi = adap2pinfo(adap, i);
2920
2921                 pi->first_qset = j;
2922                 pi->nqsets = nqsets;
2923                 j = pi->first_qset + nqsets;
2924
2925                 dev_info(&adap->pdev->dev,
2926                          "Port %d using %d queue sets.\n", i, nqsets);
2927         }
2928 }
2929
2930 static int __devinit cxgb_enable_msix(struct adapter *adap)
2931 {
2932         struct msix_entry entries[SGE_QSETS + 1];
2933         int vectors;
2934         int i, err;
2935
2936         vectors = ARRAY_SIZE(entries);
2937         for (i = 0; i < vectors; ++i)
2938                 entries[i].entry = i;
2939
2940         while ((err = pci_enable_msix(adap->pdev, entries, vectors)) > 0)
2941                 vectors = err;
2942
2943         if (err < 0)
2944                 pci_disable_msix(adap->pdev);
2945
2946         if (!err && vectors < (adap->params.nports + 1)) {
2947                 pci_disable_msix(adap->pdev);
2948                 err = -1;
2949         }
2950
2951         if (!err) {
2952                 for (i = 0; i < vectors; ++i)
2953                         adap->msix_info[i].vec = entries[i].vector;
2954                 adap->msix_nvectors = vectors;
2955         }
2956
2957         return err;
2958 }
2959
2960 static void __devinit print_port_info(struct adapter *adap,
2961                                       const struct adapter_info *ai)
2962 {
2963         static const char *pci_variant[] = {
2964                 "PCI", "PCI-X", "PCI-X ECC", "PCI-X 266", "PCI Express"
2965         };
2966
2967         int i;
2968         char buf[80];
2969
2970         if (is_pcie(adap))
2971                 snprintf(buf, sizeof(buf), "%s x%d",
2972                          pci_variant[adap->params.pci.variant],
2973                          adap->params.pci.width);
2974         else
2975                 snprintf(buf, sizeof(buf), "%s %dMHz/%d-bit",
2976                          pci_variant[adap->params.pci.variant],
2977                          adap->params.pci.speed, adap->params.pci.width);
2978
2979         for_each_port(adap, i) {
2980                 struct net_device *dev = adap->port[i];
2981                 const struct port_info *pi = netdev_priv(dev);
2982
2983                 if (!test_bit(i, &adap->registered_device_map))
2984                         continue;
2985                 printk(KERN_INFO "%s: %s %s %sNIC (rev %d) %s%s\n",
2986                        dev->name, ai->desc, pi->phy.desc,
2987                        is_offload(adap) ? "R" : "", adap->params.rev, buf,
2988                        (adap->flags & USING_MSIX) ? " MSI-X" :
2989                        (adap->flags & USING_MSI) ? " MSI" : "");
2990                 if (adap->name == dev->name && adap->params.vpd.mclk)
2991                         printk(KERN_INFO
2992                                "%s: %uMB CM, %uMB PMTX, %uMB PMRX, S/N: %s\n",
2993                                adap->name, t3_mc7_size(&adap->cm) >> 20,
2994                                t3_mc7_size(&adap->pmtx) >> 20,
2995                                t3_mc7_size(&adap->pmrx) >> 20,
2996                                adap->params.vpd.sn);
2997         }
2998 }
2999
3000 static const struct net_device_ops cxgb_netdev_ops = {
3001         .ndo_open               = cxgb_open,
3002         .ndo_stop               = cxgb_close,
3003         .ndo_start_xmit         = t3_eth_xmit,
3004         .ndo_get_stats          = cxgb_get_stats,
3005         .ndo_validate_addr      = eth_validate_addr,
3006         .ndo_set_multicast_list = cxgb_set_rxmode,
3007         .ndo_do_ioctl           = cxgb_ioctl,
3008         .ndo_change_mtu         = cxgb_change_mtu,
3009         .ndo_set_mac_address    = cxgb_set_mac_addr,
3010         .ndo_vlan_rx_register   = vlan_rx_register,
3011 #ifdef CONFIG_NET_POLL_CONTROLLER
3012         .ndo_poll_controller    = cxgb_netpoll,
3013 #endif
3014 };
3015
3016 static int __devinit init_one(struct pci_dev *pdev,
3017                               const struct pci_device_id *ent)
3018 {
3019         static int version_printed;
3020
3021         int i, err, pci_using_dac = 0;
3022         resource_size_t mmio_start, mmio_len;
3023         const struct adapter_info *ai;
3024         struct adapter *adapter = NULL;
3025         struct port_info *pi;
3026
3027         if (!version_printed) {
3028                 printk(KERN_INFO "%s - version %s\n", DRV_DESC, DRV_VERSION);
3029                 ++version_printed;
3030         }
3031
3032         if (!cxgb3_wq) {
3033                 cxgb3_wq = create_singlethread_workqueue(DRV_NAME);
3034                 if (!cxgb3_wq) {
3035                         printk(KERN_ERR DRV_NAME
3036                                ": cannot initialize work queue\n");
3037                         return -ENOMEM;
3038                 }
3039         }
3040
3041         err = pci_request_regions(pdev, DRV_NAME);
3042         if (err) {
3043                 /* Just info, some other driver may have claimed the device. */
3044                 dev_info(&pdev->dev, "cannot obtain PCI resources\n");
3045                 return err;
3046         }
3047
3048         err = pci_enable_device(pdev);
3049         if (err) {
3050                 dev_err(&pdev->dev, "cannot enable PCI device\n");
3051                 goto out_release_regions;
3052         }
3053
3054         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
3055                 pci_using_dac = 1;
3056                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3057                 if (err) {
3058                         dev_err(&pdev->dev, "unable to obtain 64-bit DMA for "
3059                                "coherent allocations\n");
3060                         goto out_disable_device;
3061                 }
3062         } else if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) != 0) {
3063                 dev_err(&pdev->dev, "no usable DMA configuration\n");
3064                 goto out_disable_device;
3065         }
3066
3067         pci_set_master(pdev);
3068         pci_save_state(pdev);
3069
3070         mmio_start = pci_resource_start(pdev, 0);
3071         mmio_len = pci_resource_len(pdev, 0);
3072         ai = t3_get_adapter_info(ent->driver_data);
3073
3074         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3075         if (!adapter) {
3076                 err = -ENOMEM;
3077                 goto out_disable_device;
3078         }
3079
3080         adapter->nofail_skb =
3081                 alloc_skb(sizeof(struct cpl_set_tcb_field), GFP_KERNEL);
3082         if (!adapter->nofail_skb) {
3083                 dev_err(&pdev->dev, "cannot allocate nofail buffer\n");
3084                 err = -ENOMEM;
3085                 goto out_free_adapter;
3086         }
3087
3088         adapter->regs = ioremap_nocache(mmio_start, mmio_len);
3089         if (!adapter->regs) {
3090                 dev_err(&pdev->dev, "cannot map device registers\n");
3091                 err = -ENOMEM;
3092                 goto out_free_adapter;
3093         }
3094
3095         adapter->pdev = pdev;
3096         adapter->name = pci_name(pdev);
3097         adapter->msg_enable = dflt_msg_enable;
3098         adapter->mmio_len = mmio_len;
3099
3100         mutex_init(&adapter->mdio_lock);
3101         spin_lock_init(&adapter->work_lock);
3102         spin_lock_init(&adapter->stats_lock);
3103
3104         INIT_LIST_HEAD(&adapter->adapter_list);
3105         INIT_WORK(&adapter->ext_intr_handler_task, ext_intr_task);
3106         INIT_WORK(&adapter->fatal_error_handler_task, fatal_error_task);
3107         INIT_DELAYED_WORK(&adapter->adap_check_task, t3_adap_check_task);
3108
3109         for (i = 0; i < ai->nports0 + ai->nports1; ++i) {
3110                 struct net_device *netdev;
3111
3112                 netdev = alloc_etherdev_mq(sizeof(struct port_info), SGE_QSETS);
3113                 if (!netdev) {
3114                         err = -ENOMEM;
3115                         goto out_free_dev;
3116                 }
3117
3118                 SET_NETDEV_DEV(netdev, &pdev->dev);
3119
3120                 adapter->port[i] = netdev;
3121                 pi = netdev_priv(netdev);
3122                 pi->adapter = adapter;
3123                 pi->rx_offload = T3_RX_CSUM | T3_LRO;
3124                 pi->port_id = i;
3125                 netif_carrier_off(netdev);
3126                 netif_tx_stop_all_queues(netdev);
3127                 netdev->irq = pdev->irq;
3128                 netdev->mem_start = mmio_start;
3129                 netdev->mem_end = mmio_start + mmio_len - 1;
3130                 netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO;
3131                 netdev->features |= NETIF_F_GRO;
3132                 if (pci_using_dac)
3133                         netdev->features |= NETIF_F_HIGHDMA;
3134
3135                 netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3136                 netdev->netdev_ops = &cxgb_netdev_ops;
3137                 SET_ETHTOOL_OPS(netdev, &cxgb_ethtool_ops);
3138         }
3139
3140         pci_set_drvdata(pdev, adapter);
3141         if (t3_prep_adapter(adapter, ai, 1) < 0) {
3142                 err = -ENODEV;
3143                 goto out_free_dev;
3144         }
3145
3146         /*
3147          * The card is now ready to go.  If any errors occur during device
3148          * registration we do not fail the whole card but rather proceed only
3149          * with the ports we manage to register successfully.  However we must
3150          * register at least one net device.
3151          */
3152         for_each_port(adapter, i) {
3153                 err = register_netdev(adapter->port[i]);
3154                 if (err)
3155                         dev_warn(&pdev->dev,
3156                                  "cannot register net device %s, skipping\n",
3157                                  adapter->port[i]->name);
3158                 else {
3159                         /*
3160                          * Change the name we use for messages to the name of
3161                          * the first successfully registered interface.
3162                          */
3163                         if (!adapter->registered_device_map)
3164                                 adapter->name = adapter->port[i]->name;
3165
3166                         __set_bit(i, &adapter->registered_device_map);
3167                 }
3168         }
3169         if (!adapter->registered_device_map) {
3170                 dev_err(&pdev->dev, "could not register any net devices\n");
3171                 goto out_free_dev;
3172         }
3173
3174         /* Driver's ready. Reflect it on LEDs */
3175         t3_led_ready(adapter);
3176
3177         if (is_offload(adapter)) {
3178                 __set_bit(OFFLOAD_DEVMAP_BIT, &adapter->registered_device_map);
3179                 cxgb3_adapter_ofld(adapter);
3180         }
3181
3182         /* See what interrupts we'll be using */
3183         if (msi > 1 && cxgb_enable_msix(adapter) == 0)
3184                 adapter->flags |= USING_MSIX;
3185         else if (msi > 0 && pci_enable_msi(pdev) == 0)
3186                 adapter->flags |= USING_MSI;
3187
3188         set_nqsets(adapter);
3189
3190         err = sysfs_create_group(&adapter->port[0]->dev.kobj,
3191                                  &cxgb3_attr_group);
3192
3193         print_port_info(adapter, ai);
3194         return 0;
3195
3196 out_free_dev:
3197         iounmap(adapter->regs);
3198         for (i = ai->nports0 + ai->nports1 - 1; i >= 0; --i)
3199                 if (adapter->port[i])
3200                         free_netdev(adapter->port[i]);
3201
3202 out_free_adapter:
3203         kfree(adapter);
3204
3205 out_disable_device:
3206         pci_disable_device(pdev);
3207 out_release_regions:
3208         pci_release_regions(pdev);
3209         pci_set_drvdata(pdev, NULL);
3210         return err;
3211 }
3212
3213 static void __devexit remove_one(struct pci_dev *pdev)
3214 {
3215         struct adapter *adapter = pci_get_drvdata(pdev);
3216
3217         if (adapter) {
3218                 int i;
3219
3220                 t3_sge_stop(adapter);
3221                 sysfs_remove_group(&adapter->port[0]->dev.kobj,
3222                                    &cxgb3_attr_group);
3223
3224                 if (is_offload(adapter)) {
3225                         cxgb3_adapter_unofld(adapter);
3226                         if (test_bit(OFFLOAD_DEVMAP_BIT,
3227                                      &adapter->open_device_map))
3228                                 offload_close(&adapter->tdev);
3229                 }
3230
3231                 for_each_port(adapter, i)
3232                     if (test_bit(i, &adapter->registered_device_map))
3233                         unregister_netdev(adapter->port[i]);
3234
3235                 t3_stop_sge_timers(adapter);
3236                 t3_free_sge_resources(adapter);
3237                 cxgb_disable_msi(adapter);
3238
3239                 for_each_port(adapter, i)
3240                         if (adapter->port[i])
3241                                 free_netdev(adapter->port[i]);
3242
3243                 iounmap(adapter->regs);
3244                 if (adapter->nofail_skb)
3245                         kfree_skb(adapter->nofail_skb);
3246                 kfree(adapter);
3247                 pci_release_regions(pdev);
3248                 pci_disable_device(pdev);
3249                 pci_set_drvdata(pdev, NULL);
3250         }
3251 }
3252
3253 static struct pci_driver driver = {
3254         .name = DRV_NAME,
3255         .id_table = cxgb3_pci_tbl,
3256         .probe = init_one,
3257         .remove = __devexit_p(remove_one),
3258         .err_handler = &t3_err_handler,
3259 };
3260
3261 static int __init cxgb3_init_module(void)
3262 {
3263         int ret;
3264
3265         cxgb3_offload_init();
3266
3267         ret = pci_register_driver(&driver);
3268         return ret;
3269 }
3270
3271 static void __exit cxgb3_cleanup_module(void)
3272 {
3273         pci_unregister_driver(&driver);
3274         if (cxgb3_wq)
3275                 destroy_workqueue(cxgb3_wq);
3276 }
3277
3278 module_init(cxgb3_init_module);
3279 module_exit(cxgb3_cleanup_module);