drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c

   1 /*
   2  * This file is part of the Chelsio T4 Ethernet driver for Linux.
   3  *
   4  * Copyright (c) 2003-2010 Chelsio Communications, Inc. All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  */
  34
  35 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  36
  37 #include <linux/bitmap.h>
  38 #include <linux/crc32.h>
  39 #include <linux/ctype.h>
  40 #include <linux/debugfs.h>
  41 #include <linux/err.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/firmware.h>
  44 #include <linux/if.h>
  45 #include <linux/if_vlan.h>
  46 #include <linux/init.h>
  47 #include <linux/log2.h>
  48 #include <linux/mdio.h>
  49 #include <linux/module.h>
  50 #include <linux/moduleparam.h>
  51 #include <linux/mutex.h>
  52 #include <linux/netdevice.h>
  53 #include <linux/pci.h>
  54 #include <linux/aer.h>
  55 #include <linux/rtnetlink.h>
  56 #include <linux/sched.h>
  57 #include <linux/seq_file.h>
  58 #include <linux/sockios.h>
  59 #include <linux/vmalloc.h>
  60 #include <linux/workqueue.h>
  61 #include <net/neighbour.h>
  62 #include <net/netevent.h>
  63 #include <asm/uaccess.h>
  64
  65 #include "cxgb4.h"
  66 #include "t4_regs.h"
  67 #include "t4_msg.h"
  68 #include "t4fw_api.h"
  69 #include "l2t.h"
  70
  71 #define DRV_VERSION "1.3.0-ko"
  72 #define DRV_DESC "Chelsio T4 Network Driver"
  73
  74 /*
  75  * Max interrupt hold-off timer value in us.  Queues fall back to this value
  76  * under extreme memory pressure so it's largish to give the system time to
  77  * recover.
  78  */
  79 #define MAX_SGE_TIMERVAL 200U
  80
  81 #ifdef CONFIG_PCI_IOV
  82 /*
  83  * Virtual Function provisioning constants.  We need two extra Ingress Queues
  84  * with Interrupt capability to serve as the VF's Firmware Event Queue and
  85  * Forwarded Interrupt Queue (when using MSI mode) -- neither will have Free
  86  * Lists associated with them).  For each Ethernet/Control Egress Queue and
  87  * for each Free List, we need an Egress Context.
  88  */
  89 enum {
  90         VFRES_NPORTS = 1,               /* # of "ports" per VF */
  91         VFRES_NQSETS = 2,               /* # of "Queue Sets" per VF */
  92
  93         VFRES_NVI = VFRES_NPORTS,       /* # of Virtual Interfaces */
  94         VFRES_NETHCTRL = VFRES_NQSETS,  /* # of EQs used for ETH or CTRL Qs */
  95         VFRES_NIQFLINT = VFRES_NQSETS+2,/* # of ingress Qs/w Free List(s)/intr */
  96         VFRES_NIQ = 0,                  /* # of non-fl/int ingress queues */
  97         VFRES_NEQ = VFRES_NQSETS*2,     /* # of egress queues */
  98         VFRES_TC = 0,                   /* PCI-E traffic class */
  99         VFRES_NEXACTF = 16,             /* # of exact MPS filters */
 100
 101         VFRES_R_CAPS = FW_CMD_CAP_DMAQ|FW_CMD_CAP_VF|FW_CMD_CAP_PORT,
 102         VFRES_WX_CAPS = FW_CMD_CAP_DMAQ|FW_CMD_CAP_VF,
 103 };
 104
 105 /*
 106  * Provide a Port Access Rights Mask for the specified PF/VF.  This is very
 107  * static and likely not to be useful in the long run.  We really need to
 108  * implement some form of persistent configuration which the firmware
 109  * controls.
 110  */
 111 static unsigned int pfvfres_pmask(struct adapter *adapter,
 112                                   unsigned int pf, unsigned int vf)
 113 {
 114         unsigned int portn, portvec;
 115
 116         /*
 117          * Give PF's access to all of the ports.
 118          */
 119         if (vf == 0)
 120                 return FW_PFVF_CMD_PMASK_MASK;
 121
 122         /*
 123          * For VFs, we'll assign them access to the ports based purely on the
 124          * PF.  We assign active ports in order, wrapping around if there are
 125          * fewer active ports than PFs: e.g. active port[pf % nports].
 126          * Unfortunately the adapter's port_info structs haven't been
 127          * initialized yet so we have to compute this.
 128          */
 129         if (adapter->params.nports == 0)
 130                 return 0;
 131
 132         portn = pf % adapter->params.nports;
 133         portvec = adapter->params.portvec;
 134         for (;;) {
 135                 /*
 136                  * Isolate the lowest set bit in the port vector.  If we're at
 137                  * the port number that we want, return that as the pmask.
 138                  * otherwise mask that bit out of the port vector and
 139                  * decrement our port number ...
 140                  */
 141                 unsigned int pmask = portvec ^ (portvec & (portvec-1));
 142                 if (portn == 0)
 143                         return pmask;
 144                 portn--;
 145                 portvec &= ~pmask;
 146         }
 147         /*NOTREACHED*/
 148 }
 149 #endif
 150
 151 enum {
 152         MEMWIN0_APERTURE = 65536,
 153         MEMWIN0_BASE     = 0x30000,
 154         MEMWIN1_APERTURE = 32768,
 155         MEMWIN1_BASE     = 0x28000,
 156         MEMWIN2_APERTURE = 2048,
 157         MEMWIN2_BASE     = 0x1b800,
 158 };
 159
 160 enum {
 161         MAX_TXQ_ENTRIES      = 16384,
 162         MAX_CTRL_TXQ_ENTRIES = 1024,
 163         MAX_RSPQ_ENTRIES     = 16384,
 164         MAX_RX_BUFFERS       = 16384,
 165         MIN_TXQ_ENTRIES      = 32,
 166         MIN_CTRL_TXQ_ENTRIES = 32,
 167         MIN_RSPQ_ENTRIES     = 128,
 168         MIN_FL_ENTRIES       = 16
 169 };
 170
 171 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
 172                          NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
 173                          NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
 174
 175 #define CH_DEVICE(devid, data) { PCI_VDEVICE(CHELSIO, devid), (data) }
 176
 177 static DEFINE_PCI_DEVICE_TABLE(cxgb4_pci_tbl) = {
 178         CH_DEVICE(0xa000, 0),  /* PE10K */
 179         CH_DEVICE(0x4001, -1),
 180         CH_DEVICE(0x4002, -1),
 181         CH_DEVICE(0x4003, -1),
 182         CH_DEVICE(0x4004, -1),
 183         CH_DEVICE(0x4005, -1),
 184         CH_DEVICE(0x4006, -1),
 185         CH_DEVICE(0x4007, -1),
 186         CH_DEVICE(0x4008, -1),
 187         CH_DEVICE(0x4009, -1),
 188         CH_DEVICE(0x400a, -1),
 189         CH_DEVICE(0x4401, 4),
 190         CH_DEVICE(0x4402, 4),
 191         CH_DEVICE(0x4403, 4),
 192         CH_DEVICE(0x4404, 4),
 193         CH_DEVICE(0x4405, 4),
 194         CH_DEVICE(0x4406, 4),
 195         CH_DEVICE(0x4407, 4),
 196         CH_DEVICE(0x4408, 4),
 197         CH_DEVICE(0x4409, 4),
 198         CH_DEVICE(0x440a, 4),
 199         CH_DEVICE(0x440d, 4),
 200         CH_DEVICE(0x440e, 4),
 201         { 0, }
 202 };
 203
 204 #define FW_FNAME "cxgb4/t4fw.bin"
 205
 206 MODULE_DESCRIPTION(DRV_DESC);
 207 MODULE_AUTHOR("Chelsio Communications");
 208 MODULE_LICENSE("Dual BSD/GPL");
 209 MODULE_VERSION(DRV_VERSION);
 210 MODULE_DEVICE_TABLE(pci, cxgb4_pci_tbl);
 211 MODULE_FIRMWARE(FW_FNAME);
 212
 213 static int dflt_msg_enable = DFLT_MSG_ENABLE;
 214
 215 module_param(dflt_msg_enable, int, 0644);
 216 MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T4 default message enable bitmap");
 217
 218 /*
 219  * The driver uses the best interrupt scheme available on a platform in the
 220  * order MSI-X, MSI, legacy INTx interrupts.  This parameter determines which
 221  * of these schemes the driver may consider as follows:
 222  *
 223  * msi = 2: choose from among all three options
 224  * msi = 1: only consider MSI and INTx interrupts
 225  * msi = 0: force INTx interrupts
 226  */
 227 static int msi = 2;
 228
 229 module_param(msi, int, 0644);
 230 MODULE_PARM_DESC(msi, "whether to use INTx (0), MSI (1) or MSI-X (2)");
 231
 232 /*
 233  * Queue interrupt hold-off timer values.  Queues default to the first of these
 234  * upon creation.
 235  */
 236 static unsigned int intr_holdoff[SGE_NTIMERS - 1] = { 5, 10, 20, 50, 100 };
 237
 238 module_param_array(intr_holdoff, uint, NULL, 0644);
 239 MODULE_PARM_DESC(intr_holdoff, "values for queue interrupt hold-off timers "
 240                  "0..4 in microseconds");
 241
 242 static unsigned int intr_cnt[SGE_NCOUNTERS - 1] = { 4, 8, 16 };
 243
 244 module_param_array(intr_cnt, uint, NULL, 0644);
 245 MODULE_PARM_DESC(intr_cnt,
 246                  "thresholds 1..3 for queue interrupt packet counters");
 247
 248 static bool vf_acls;
 249
 250 #ifdef CONFIG_PCI_IOV
 251 module_param(vf_acls, bool, 0644);
 252 MODULE_PARM_DESC(vf_acls, "if set enable virtualization L2 ACL enforcement");
 253
 254 static unsigned int num_vf[4];
 255
 256 module_param_array(num_vf, uint, NULL, 0644);
 257 MODULE_PARM_DESC(num_vf, "number of VFs for each of PFs 0-3");
 258 #endif
 259
 260 static struct dentry *cxgb4_debugfs_root;
 261
 262 static LIST_HEAD(adapter_list);
 263 static DEFINE_MUTEX(uld_mutex);
 264 static struct cxgb4_uld_info ulds[CXGB4_ULD_MAX];
 265 static const char *uld_str[] = { "RDMA", "iSCSI" };
 266
 267 static void link_report(struct net_device *dev)
 268 {
 269         if (!netif_carrier_ok(dev))
 270                 netdev_info(dev, "link down\n");
 271         else {
 272                 static const char *fc[] = { "no", "Rx", "Tx", "Tx/Rx" };
 273
 274                 const char *s = "10Mbps";
 275                 const struct port_info *p = netdev_priv(dev);
 276
 277                 switch (p->link_cfg.speed) {
 278                 case SPEED_10000:
 279                         s = "10Gbps";
 280                         break;
 281                 case SPEED_1000:
 282                         s = "1000Mbps";
 283                         break;
 284                 case SPEED_100:
 285                         s = "100Mbps";
 286                         break;
 287                 }
 288
 289                 netdev_info(dev, "link up, %s, full-duplex, %s PAUSE\n", s,
 290                             fc[p->link_cfg.fc]);
 291         }
 292 }
 293
 294 void t4_os_link_changed(struct adapter *adapter, int port_id, int link_stat)
 295 {
 296         struct net_device *dev = adapter->port[port_id];
 297
 298         /* Skip changes from disabled ports. */
 299         if (netif_running(dev) && link_stat != netif_carrier_ok(dev)) {
 300                 if (link_stat)
 301                         netif_carrier_on(dev);
 302                 else
 303                         netif_carrier_off(dev);
 304
 305                 link_report(dev);
 306         }
 307 }
 308
 309 void t4_os_portmod_changed(const struct adapter *adap, int port_id)
 310 {
 311         static const char *mod_str[] = {
 312                 NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM"
 313         };
 314
 315         const struct net_device *dev = adap->port[port_id];
 316         const struct port_info *pi = netdev_priv(dev);
 317
 318         if (pi->mod_type == FW_PORT_MOD_TYPE_NONE)
 319                 netdev_info(dev, "port module unplugged\n");
 320         else if (pi->mod_type < ARRAY_SIZE(mod_str))
 321                 netdev_info(dev, "%s module inserted\n", mod_str[pi->mod_type]);
 322 }
 323
 324 /*
 325  * Configure the exact and hash address filters to handle a port's multicast
 326  * and secondary unicast MAC addresses.
 327  */
 328 static int set_addr_filters(const struct net_device *dev, bool sleep)
 329 {
 330         u64 mhash = 0;
 331         u64 uhash = 0;
 332         bool free = true;
 333         u16 filt_idx[7];
 334         const u8 *addr[7];
 335         int ret, naddr = 0;
 336         const struct netdev_hw_addr *ha;
 337         int uc_cnt = netdev_uc_count(dev);
 338         int mc_cnt = netdev_mc_count(dev);
 339         const struct port_info *pi = netdev_priv(dev);
 340         unsigned int mb = pi->adapter->fn;
 341
 342         /* first do the secondary unicast addresses */
 343         netdev_for_each_uc_addr(ha, dev) {
 344                 addr[naddr++] = ha->addr;
 345                 if (--uc_cnt == 0 || naddr >= ARRAY_SIZE(addr)) {
 346                         ret = t4_alloc_mac_filt(pi->adapter, mb, pi->viid, free,
 347                                         naddr, addr, filt_idx, &uhash, sleep);
 348                         if (ret < 0)
 349                                 return ret;
 350
 351                         free = false;
 352                         naddr = 0;
 353                 }
 354         }
 355
 356         /* next set up the multicast addresses */
 357         netdev_for_each_mc_addr(ha, dev) {
 358                 addr[naddr++] = ha->addr;
 359                 if (--mc_cnt == 0 || naddr >= ARRAY_SIZE(addr)) {
 360                         ret = t4_alloc_mac_filt(pi->adapter, mb, pi->viid, free,
 361                                         naddr, addr, filt_idx, &mhash, sleep);
 362                         if (ret < 0)
 363                                 return ret;
 364
 365                         free = false;
 366                         naddr = 0;
 367                 }
 368         }
 369
 370         return t4_set_addr_hash(pi->adapter, mb, pi->viid, uhash != 0,
 371                                 uhash | mhash, sleep);
 372 }
 373
 374 /*
 375  * Set Rx properties of a port, such as promiscruity, address filters, and MTU.
 376  * If @mtu is -1 it is left unchanged.
 377  */
 378 static int set_rxmode(struct net_device *dev, int mtu, bool sleep_ok)
 379 {
 380         int ret;
 381         struct port_info *pi = netdev_priv(dev);
 382
 383         ret = set_addr_filters(dev, sleep_ok);
 384         if (ret == 0)
 385                 ret = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, mtu,
 386                                     (dev->flags & IFF_PROMISC) ? 1 : 0,
 387                                     (dev->flags & IFF_ALLMULTI) ? 1 : 0, 1, -1,
 388                                     sleep_ok);
 389         return ret;
 390 }
 391
 392 /**
 393  *      link_start - enable a port
 394  *      @dev: the port to enable
 395  *
 396  *      Performs the MAC and PHY actions needed to enable a port.
 397  */
 398 static int link_start(struct net_device *dev)
 399 {
 400         int ret;
 401         struct port_info *pi = netdev_priv(dev);
 402         unsigned int mb = pi->adapter->fn;
 403
 404         /*
 405          * We do not set address filters and promiscuity here, the stack does
 406          * that step explicitly.
 407          */
 408         ret = t4_set_rxmode(pi->adapter, mb, pi->viid, dev->mtu, -1, -1, -1,
 409                             !!(dev->features & NETIF_F_HW_VLAN_RX), true);
 410         if (ret == 0) {
 411                 ret = t4_change_mac(pi->adapter, mb, pi->viid,
 412                                     pi->xact_addr_filt, dev->dev_addr, true,
 413                                     true);
 414                 if (ret >= 0) {
 415                         pi->xact_addr_filt = ret;
 416                         ret = 0;
 417                 }
 418         }
 419         if (ret == 0)
 420                 ret = t4_link_start(pi->adapter, mb, pi->tx_chan,
 421                                     &pi->link_cfg);
 422         if (ret == 0)
 423                 ret = t4_enable_vi(pi->adapter, mb, pi->viid, true, true);
 424         return ret;
 425 }
 426
 427 /*
 428  * Response queue handler for the FW event queue.
 429  */
 430 static int fwevtq_handler(struct sge_rspq *q, const __be64 *rsp,
 431                           const struct pkt_gl *gl)
 432 {
 433         u8 opcode = ((const struct rss_header *)rsp)->opcode;
 434
 435         rsp++;                                          /* skip RSS header */
 436         if (likely(opcode == CPL_SGE_EGR_UPDATE)) {
 437                 const struct cpl_sge_egr_update *p = (void *)rsp;
 438                 unsigned int qid = EGR_QID(ntohl(p->opcode_qid));
 439                 struct sge_txq *txq;
 440
 441                 txq = q->adap->sge.egr_map[qid - q->adap->sge.egr_start];
 442                 txq->restarts++;
 443                 if ((u8 *)txq < (u8 *)q->adap->sge.ofldtxq) {
 444                         struct sge_eth_txq *eq;
 445
 446                         eq = container_of(txq, struct sge_eth_txq, q);
 447                         netif_tx_wake_queue(eq->txq);
 448                 } else {
 449                         struct sge_ofld_txq *oq;
 450
 451                         oq = container_of(txq, struct sge_ofld_txq, q);
 452                         tasklet_schedule(&oq->qresume_tsk);
 453                 }
 454         } else if (opcode == CPL_FW6_MSG || opcode == CPL_FW4_MSG) {
 455                 const struct cpl_fw6_msg *p = (void *)rsp;
 456
 457                 if (p->type == 0)
 458                         t4_handle_fw_rpl(q->adap, p->data);
 459         } else if (opcode == CPL_L2T_WRITE_RPL) {
 460                 const struct cpl_l2t_write_rpl *p = (void *)rsp;
 461
 462                 do_l2t_write_rpl(q->adap, p);
 463         } else
 464                 dev_err(q->adap->pdev_dev,
 465                         "unexpected CPL %#x on FW event queue\n", opcode);
 466         return 0;
 467 }
 468
 469 /**
 470  *      uldrx_handler - response queue handler for ULD queues
 471  *      @q: the response queue that received the packet
 472  *      @rsp: the response queue descriptor holding the offload message
 473  *      @gl: the gather list of packet fragments
 474  *
 475  *      Deliver an ingress offload packet to a ULD.  All processing is done by
 476  *      the ULD, we just maintain statistics.
 477  */
 478 static int uldrx_handler(struct sge_rspq *q, const __be64 *rsp,
 479                          const struct pkt_gl *gl)
 480 {
 481         struct sge_ofld_rxq *rxq = container_of(q, struct sge_ofld_rxq, rspq);
 482
 483         if (ulds[q->uld].rx_handler(q->adap->uld_handle[q->uld], rsp, gl)) {
 484                 rxq->stats.nomem++;
 485                 return -1;
 486         }
 487         if (gl == NULL)
 488                 rxq->stats.imm++;
 489         else if (gl == CXGB4_MSG_AN)
 490                 rxq->stats.an++;
 491         else
 492                 rxq->stats.pkts++;
 493         return 0;
 494 }
 495
 496 static void disable_msi(struct adapter *adapter)
 497 {
 498         if (adapter->flags & USING_MSIX) {
 499                 pci_disable_msix(adapter->pdev);
 500                 adapter->flags &= ~USING_MSIX;
 501         } else if (adapter->flags & USING_MSI) {
 502                 pci_disable_msi(adapter->pdev);
 503                 adapter->flags &= ~USING_MSI;
 504         }
 505 }
 506
 507 /*
 508  * Interrupt handler for non-data events used with MSI-X.
 509  */
 510 static irqreturn_t t4_nondata_intr(int irq, void *cookie)
 511 {
 512         struct adapter *adap = cookie;
 513
 514         u32 v = t4_read_reg(adap, MYPF_REG(PL_PF_INT_CAUSE));
 515         if (v & PFSW) {
 516                 adap->swintr = 1;
 517                 t4_write_reg(adap, MYPF_REG(PL_PF_INT_CAUSE), v);
 518         }
 519         t4_slow_intr_handler(adap);
 520         return IRQ_HANDLED;
 521 }
 522
 523 /*
 524  * Name the MSI-X interrupts.
 525  */
 526 static void name_msix_vecs(struct adapter *adap)
 527 {
 528         int i, j, msi_idx = 2, n = sizeof(adap->msix_info[0].desc);
 529
 530         /* non-data interrupts */
 531         snprintf(adap->msix_info[0].desc, n, "%s", adap->port[0]->name);
 532
 533         /* FW events */
 534         snprintf(adap->msix_info[1].desc, n, "%s-FWeventq",
 535                  adap->port[0]->name);
 536
 537         /* Ethernet queues */
 538         for_each_port(adap, j) {
 539                 struct net_device *d = adap->port[j];
 540                 const struct port_info *pi = netdev_priv(d);
 541
 542                 for (i = 0; i < pi->nqsets; i++, msi_idx++)
 543                         snprintf(adap->msix_info[msi_idx].desc, n, "%s-Rx%d",
 544                                  d->name, i);
 545         }
 546
 547         /* offload queues */
 548         for_each_ofldrxq(&adap->sge, i)
 549                 snprintf(adap->msix_info[msi_idx++].desc, n, "%s-ofld%d",
 550                          adap->port[0]->name, i);
 551
 552         for_each_rdmarxq(&adap->sge, i)
 553                 snprintf(adap->msix_info[msi_idx++].desc, n, "%s-rdma%d",
 554                          adap->port[0]->name, i);
 555 }
 556
 557 static int request_msix_queue_irqs(struct adapter *adap)
 558 {
 559         struct sge *s = &adap->sge;
 560         int err, ethqidx, ofldqidx = 0, rdmaqidx = 0, msi = 2;
 561
 562         err = request_irq(adap->msix_info[1].vec, t4_sge_intr_msix, 0,
 563                           adap->msix_info[1].desc, &s->fw_evtq);
 564         if (err)
 565                 return err;
 566
 567         for_each_ethrxq(s, ethqidx) {
 568                 err = request_irq(adap->msix_info[msi].vec, t4_sge_intr_msix, 0,
 569                                   adap->msix_info[msi].desc,
 570                                   &s->ethrxq[ethqidx].rspq);
 571                 if (err)
 572                         goto unwind;
 573                 msi++;
 574         }
 575         for_each_ofldrxq(s, ofldqidx) {
 576                 err = request_irq(adap->msix_info[msi].vec, t4_sge_intr_msix, 0,
 577                                   adap->msix_info[msi].desc,
 578                                   &s->ofldrxq[ofldqidx].rspq);
 579                 if (err)
 580                         goto unwind;
 581                 msi++;
 582         }
 583         for_each_rdmarxq(s, rdmaqidx) {
 584                 err = request_irq(adap->msix_info[msi].vec, t4_sge_intr_msix, 0,
 585                                   adap->msix_info[msi].desc,
 586                                   &s->rdmarxq[rdmaqidx].rspq);
 587                 if (err)
 588                         goto unwind;
 589                 msi++;
 590         }
 591         return 0;
 592
 593 unwind:
 594         while (--rdmaqidx >= 0)
 595                 free_irq(adap->msix_info[--msi].vec,
 596                          &s->rdmarxq[rdmaqidx].rspq);
 597         while (--ofldqidx >= 0)
 598                 free_irq(adap->msix_info[--msi].vec,
 599                          &s->ofldrxq[ofldqidx].rspq);
 600         while (--ethqidx >= 0)
 601                 free_irq(adap->msix_info[--msi].vec, &s->ethrxq[ethqidx].rspq);
 602         free_irq(adap->msix_info[1].vec, &s->fw_evtq);
 603         return err;
 604 }
 605
 606 static void free_msix_queue_irqs(struct adapter *adap)
 607 {
 608         int i, msi = 2;
 609         struct sge *s = &adap->sge;
 610
 611         free_irq(adap->msix_info[1].vec, &s->fw_evtq);
 612         for_each_ethrxq(s, i)
 613                 free_irq(adap->msix_info[msi++].vec, &s->ethrxq[i].rspq);
 614         for_each_ofldrxq(s, i)
 615                 free_irq(adap->msix_info[msi++].vec, &s->ofldrxq[i].rspq);
 616         for_each_rdmarxq(s, i)
 617                 free_irq(adap->msix_info[msi++].vec, &s->rdmarxq[i].rspq);
 618 }
 619
 620 /**
 621  *      write_rss - write the RSS table for a given port
 622  *      @pi: the port
 623  *      @queues: array of queue indices for RSS
 624  *
 625  *      Sets up the portion of the HW RSS table for the port's VI to distribute
 626  *      packets to the Rx queues in @queues.
 627  */
 628 static int write_rss(const struct port_info *pi, const u16 *queues)
 629 {
 630         u16 *rss;
 631         int i, err;
 632         const struct sge_eth_rxq *q = &pi->adapter->sge.ethrxq[pi->first_qset];
 633
 634         rss = kmalloc(pi->rss_size * sizeof(u16), GFP_KERNEL);
 635         if (!rss)
 636                 return -ENOMEM;
 637
 638         /* map the queue indices to queue ids */
 639         for (i = 0; i < pi->rss_size; i++, queues++)
 640                 rss[i] = q[*queues].rspq.abs_id;
 641
 642         err = t4_config_rss_range(pi->adapter, pi->adapter->fn, pi->viid, 0,
 643                                   pi->rss_size, rss, pi->rss_size);
 644         kfree(rss);
 645         return err;
 646 }
 647
 648 /**
 649  *      setup_rss - configure RSS
 650  *      @adap: the adapter
 651  *
 652  *      Sets up RSS for each port.
 653  */
 654 static int setup_rss(struct adapter *adap)
 655 {
 656         int i, err;
 657
 658         for_each_port(adap, i) {
 659                 const struct port_info *pi = adap2pinfo(adap, i);
 660
 661                 err = write_rss(pi, pi->rss);
 662                 if (err)
 663                         return err;
 664         }
 665         return 0;
 666 }
 667
 668 /*
 669  * Return the channel of the ingress queue with the given qid.
 670  */
 671 static unsigned int rxq_to_chan(const struct sge *p, unsigned int qid)
 672 {
 673         qid -= p->ingr_start;
 674         return netdev2pinfo(p->ingr_map[qid]->netdev)->tx_chan;
 675 }
 676
 677 /*
 678  * Wait until all NAPI handlers are descheduled.
 679  */
 680 static void quiesce_rx(struct adapter *adap)
 681 {
 682         int i;
 683
 684         for (i = 0; i < ARRAY_SIZE(adap->sge.ingr_map); i++) {
 685                 struct sge_rspq *q = adap->sge.ingr_map[i];
 686
 687                 if (q && q->handler)
 688                         napi_disable(&q->napi);
 689         }
 690 }
 691
 692 /*
 693  * Enable NAPI scheduling and interrupt generation for all Rx queues.
 694  */
 695 static void enable_rx(struct adapter *adap)
 696 {
 697         int i;
 698
 699         for (i = 0; i < ARRAY_SIZE(adap->sge.ingr_map); i++) {
 700                 struct sge_rspq *q = adap->sge.ingr_map[i];
 701
 702                 if (!q)
 703                         continue;
 704                 if (q->handler)
 705                         napi_enable(&q->napi);
 706                 /* 0-increment GTS to start the timer and enable interrupts */
 707                 t4_write_reg(adap, MYPF_REG(SGE_PF_GTS),
 708                              SEINTARM(q->intr_params) |
 709                              INGRESSQID(q->cntxt_id));
 710         }
 711 }
 712
 713 /**
 714  *      setup_sge_queues - configure SGE Tx/Rx/response queues
 715  *      @adap: the adapter
 716  *
 717  *      Determines how many sets of SGE queues to use and initializes them.
 718  *      We support multiple queue sets per port if we have MSI-X, otherwise
 719  *      just one queue set per port.
 720  */
 721 static int setup_sge_queues(struct adapter *adap)
 722 {
 723         int err, msi_idx, i, j;
 724         struct sge *s = &adap->sge;
 725
 726         bitmap_zero(s->starving_fl, MAX_EGRQ);
 727         bitmap_zero(s->txq_maperr, MAX_EGRQ);
 728
 729         if (adap->flags & USING_MSIX)
 730                 msi_idx = 1;         /* vector 0 is for non-queue interrupts */
 731         else {
 732                 err = t4_sge_alloc_rxq(adap, &s->intrq, false, adap->port[0], 0,
 733                                        NULL, NULL);
 734                 if (err)
 735                         return err;
 736                 msi_idx = -((int)s->intrq.abs_id + 1);
 737         }
 738
 739         err = t4_sge_alloc_rxq(adap, &s->fw_evtq, true, adap->port[0],
 740                                msi_idx, NULL, fwevtq_handler);
 741         if (err) {
 742 freeout:        t4_free_sge_resources(adap);
 743                 return err;
 744         }
 745
 746         for_each_port(adap, i) {
 747                 struct net_device *dev = adap->port[i];
 748                 struct port_info *pi = netdev_priv(dev);
 749                 struct sge_eth_rxq *q = &s->ethrxq[pi->first_qset];
 750                 struct sge_eth_txq *t = &s->ethtxq[pi->first_qset];
 751
 752                 for (j = 0; j < pi->nqsets; j++, q++) {
 753                         if (msi_idx > 0)
 754                                 msi_idx++;
 755                         err = t4_sge_alloc_rxq(adap, &q->rspq, false, dev,
 756                                                msi_idx, &q->fl,
 757                                                t4_ethrx_handler);
 758                         if (err)
 759                                 goto freeout;
 760                         q->rspq.idx = j;
 761                         memset(&q->stats, 0, sizeof(q->stats));
 762                 }
 763                 for (j = 0; j < pi->nqsets; j++, t++) {
 764                         err = t4_sge_alloc_eth_txq(adap, t, dev,
 765                                         netdev_get_tx_queue(dev, j),
 766                                         s->fw_evtq.cntxt_id);
 767                         if (err)
 768                                 goto freeout;
 769                 }
 770         }
 771
 772         j = s->ofldqsets / adap->params.nports; /* ofld queues per channel */
 773         for_each_ofldrxq(s, i) {
 774                 struct sge_ofld_rxq *q = &s->ofldrxq[i];
 775                 struct net_device *dev = adap->port[i / j];
 776
 777                 if (msi_idx > 0)
 778                         msi_idx++;
 779                 err = t4_sge_alloc_rxq(adap, &q->rspq, false, dev, msi_idx,
 780                                        &q->fl, uldrx_handler);
 781                 if (err)
 782                         goto freeout;
 783                 memset(&q->stats, 0, sizeof(q->stats));
 784                 s->ofld_rxq[i] = q->rspq.abs_id;
 785                 err = t4_sge_alloc_ofld_txq(adap, &s->ofldtxq[i], dev,
 786                                             s->fw_evtq.cntxt_id);
 787                 if (err)
 788                         goto freeout;
 789         }
 790
 791         for_each_rdmarxq(s, i) {
 792                 struct sge_ofld_rxq *q = &s->rdmarxq[i];
 793
 794                 if (msi_idx > 0)
 795                         msi_idx++;
 796                 err = t4_sge_alloc_rxq(adap, &q->rspq, false, adap->port[i],
 797                                        msi_idx, &q->fl, uldrx_handler);
 798                 if (err)
 799                         goto freeout;
 800                 memset(&q->stats, 0, sizeof(q->stats));
 801                 s->rdma_rxq[i] = q->rspq.abs_id;
 802         }
 803
 804         for_each_port(adap, i) {
 805                 /*
 806                  * Note that ->rdmarxq[i].rspq.cntxt_id below is 0 if we don't
 807                  * have RDMA queues, and that's the right value.
 808                  */
 809                 err = t4_sge_alloc_ctrl_txq(adap, &s->ctrlq[i], adap->port[i],
 810                                             s->fw_evtq.cntxt_id,
 811                                             s->rdmarxq[i].rspq.cntxt_id);
 812                 if (err)
 813                         goto freeout;
 814         }
 815
 816         t4_write_reg(adap, MPS_TRC_RSS_CONTROL,
 817                      RSSCONTROL(netdev2pinfo(adap->port[0])->tx_chan) |
 818                      QUEUENUMBER(s->ethrxq[0].rspq.abs_id));
 819         return 0;
 820 }
 821
 822 /*
 823  * Returns 0 if new FW was successfully loaded, a positive errno if a load was
 824  * started but failed, and a negative errno if flash load couldn't start.
 825  */
 826 static int upgrade_fw(struct adapter *adap)
 827 {
 828         int ret;
 829         u32 vers;
 830         const struct fw_hdr *hdr;
 831         const struct firmware *fw;
 832         struct device *dev = adap->pdev_dev;
 833
 834         ret = request_firmware(&fw, FW_FNAME, dev);
 835         if (ret < 0) {
 836                 dev_err(dev, "unable to load firmware image " FW_FNAME
 837                         ", error %d\n", ret);
 838                 return ret;
 839         }
 840
 841         hdr = (const struct fw_hdr *)fw->data;
 842         vers = ntohl(hdr->fw_ver);
 843         if (FW_HDR_FW_VER_MAJOR_GET(vers) != FW_VERSION_MAJOR) {
 844                 ret = -EINVAL;              /* wrong major version, won't do */
 845                 goto out;
 846         }
 847
 848         /*
 849          * If the flash FW is unusable or we found something newer, load it.
 850          */
 851         if (FW_HDR_FW_VER_MAJOR_GET(adap->params.fw_vers) != FW_VERSION_MAJOR ||
 852             vers > adap->params.fw_vers) {
 853                 ret = -t4_load_fw(adap, fw->data, fw->size);
 854                 if (!ret)
 855                         dev_info(dev, "firmware upgraded to version %pI4 from "
 856                                  FW_FNAME "\n", &hdr->fw_ver);
 857         }
 858 out:    release_firmware(fw);
 859         return ret;
 860 }
 861
 862 /*
 863  * Allocate a chunk of memory using kmalloc or, if that fails, vmalloc.
 864  * The allocated memory is cleared.
 865  */
 866 void *t4_alloc_mem(size_t size)
 867 {
 868         void *p = kzalloc(size, GFP_KERNEL);
 869
 870         if (!p)
 871                 p = vzalloc(size);
 872         return p;
 873 }
 874
 875 /*
 876  * Free memory allocated through alloc_mem().
 877  */
 878 static void t4_free_mem(void *addr)
 879 {
 880         if (is_vmalloc_addr(addr))
 881                 vfree(addr);
 882         else
 883                 kfree(addr);
 884 }
 885
 886 static inline int is_offload(const struct adapter *adap)
 887 {
 888         return adap->params.offload;
 889 }
 890
 891 /*
 892  * Implementation of ethtool operations.
 893  */
 894
 895 static u32 get_msglevel(struct net_device *dev)
 896 {
 897         return netdev2adap(dev)->msg_enable;
 898 }
 899
 900 static void set_msglevel(struct net_device *dev, u32 val)
 901 {
 902         netdev2adap(dev)->msg_enable = val;
 903 }
 904
 905 static char stats_strings[][ETH_GSTRING_LEN] = {
 906         "TxOctetsOK         ",
 907         "TxFramesOK         ",
 908         "TxBroadcastFrames  ",
 909         "TxMulticastFrames  ",
 910         "TxUnicastFrames    ",
 911         "TxErrorFrames      ",
 912
 913         "TxFrames64         ",
 914         "TxFrames65To127    ",
 915         "TxFrames128To255   ",
 916         "TxFrames256To511   ",
 917         "TxFrames512To1023  ",
 918         "TxFrames1024To1518 ",
 919         "TxFrames1519ToMax  ",
 920
 921         "TxFramesDropped    ",
 922         "TxPauseFrames      ",
 923         "TxPPP0Frames       ",
 924         "TxPPP1Frames       ",
 925         "TxPPP2Frames       ",
 926         "TxPPP3Frames       ",
 927         "TxPPP4Frames       ",
 928         "TxPPP5Frames       ",
 929         "TxPPP6Frames       ",
 930         "TxPPP7Frames       ",
 931
 932         "RxOctetsOK         ",
 933         "RxFramesOK         ",
 934         "RxBroadcastFrames  ",
 935         "RxMulticastFrames  ",
 936         "RxUnicastFrames    ",
 937
 938         "RxFramesTooLong    ",
 939         "RxJabberErrors     ",
 940         "RxFCSErrors        ",
 941         "RxLengthErrors     ",
 942         "RxSymbolErrors     ",
 943         "RxRuntFrames       ",
 944
 945         "RxFrames64         ",
 946         "RxFrames65To127    ",
 947         "RxFrames128To255   ",
 948         "RxFrames256To511   ",
 949         "RxFrames512To1023  ",
 950         "RxFrames1024To1518 ",
 951         "RxFrames1519ToMax  ",
 952
 953         "RxPauseFrames      ",
 954         "RxPPP0Frames       ",
 955         "RxPPP1Frames       ",
 956         "RxPPP2Frames       ",
 957         "RxPPP3Frames       ",
 958         "RxPPP4Frames       ",
 959         "RxPPP5Frames       ",
 960         "RxPPP6Frames       ",
 961         "RxPPP7Frames       ",
 962
 963         "RxBG0FramesDropped ",
 964         "RxBG1FramesDropped ",
 965         "RxBG2FramesDropped ",
 966         "RxBG3FramesDropped ",
 967         "RxBG0FramesTrunc   ",
 968         "RxBG1FramesTrunc   ",
 969         "RxBG2FramesTrunc   ",
 970         "RxBG3FramesTrunc   ",
 971
 972         "TSO                ",
 973         "TxCsumOffload      ",
 974         "RxCsumGood         ",
 975         "VLANextractions    ",
 976         "VLANinsertions     ",
 977         "GROpackets         ",
 978         "GROmerged          ",
 979 };
 980
 981 static int get_sset_count(struct net_device *dev, int sset)
 982 {
 983         switch (sset) {
 984         case ETH_SS_STATS:
 985                 return ARRAY_SIZE(stats_strings);
 986         default:
 987                 return -EOPNOTSUPP;
 988         }
 989 }
 990
 991 #define T4_REGMAP_SIZE (160 * 1024)
 992
 993 static int get_regs_len(struct net_device *dev)
 994 {
 995         return T4_REGMAP_SIZE;
 996 }
 997
 998 static int get_eeprom_len(struct net_device *dev)
 999 {
1000         return EEPROMSIZE;
1001 }
1002
1003 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1004 {
1005         struct adapter *adapter = netdev2adap(dev);
1006
1007         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
1008         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
1009         strlcpy(info->bus_info, pci_name(adapter->pdev),
1010                 sizeof(info->bus_info));
1011
1012         if (adapter->params.fw_vers)
1013                 snprintf(info->fw_version, sizeof(info->fw_version),
1014                         "%u.%u.%u.%u, TP %u.%u.%u.%u",
1015                         FW_HDR_FW_VER_MAJOR_GET(adapter->params.fw_vers),
1016                         FW_HDR_FW_VER_MINOR_GET(adapter->params.fw_vers),
1017                         FW_HDR_FW_VER_MICRO_GET(adapter->params.fw_vers),
1018                         FW_HDR_FW_VER_BUILD_GET(adapter->params.fw_vers),
1019                         FW_HDR_FW_VER_MAJOR_GET(adapter->params.tp_vers),
1020                         FW_HDR_FW_VER_MINOR_GET(adapter->params.tp_vers),
1021                         FW_HDR_FW_VER_MICRO_GET(adapter->params.tp_vers),
1022                         FW_HDR_FW_VER_BUILD_GET(adapter->params.tp_vers));
1023 }
1024
1025 static void get_strings(struct net_device *dev, u32 stringset, u8 *data)
1026 {
1027         if (stringset == ETH_SS_STATS)
1028                 memcpy(data, stats_strings, sizeof(stats_strings));
1029 }
1030
1031 /*
1032  * port stats maintained per queue of the port.  They should be in the same
1033  * order as in stats_strings above.
1034  */
1035 struct queue_port_stats {
1036         u64 tso;
1037         u64 tx_csum;
1038         u64 rx_csum;
1039         u64 vlan_ex;
1040         u64 vlan_ins;
1041         u64 gro_pkts;
1042         u64 gro_merged;
1043 };
1044
1045 static void collect_sge_port_stats(const struct adapter *adap,
1046                 const struct port_info *p, struct queue_port_stats *s)
1047 {
1048         int i;
1049         const struct sge_eth_txq *tx = &adap->sge.ethtxq[p->first_qset];
1050         const struct sge_eth_rxq *rx = &adap->sge.ethrxq[p->first_qset];
1051
1052         memset(s, 0, sizeof(*s));
1053         for (i = 0; i < p->nqsets; i++, rx++, tx++) {
1054                 s->tso += tx->tso;
1055                 s->tx_csum += tx->tx_cso;
1056                 s->rx_csum += rx->stats.rx_cso;
1057                 s->vlan_ex += rx->stats.vlan_ex;
1058                 s->vlan_ins += tx->vlan_ins;
1059                 s->gro_pkts += rx->stats.lro_pkts;
1060                 s->gro_merged += rx->stats.lro_merged;
1061         }
1062 }
1063
1064 static void get_stats(struct net_device *dev, struct ethtool_stats *stats,
1065                       u64 *data)
1066 {
1067         struct port_info *pi = netdev_priv(dev);
1068         struct adapter *adapter = pi->adapter;
1069
1070         t4_get_port_stats(adapter, pi->tx_chan, (struct port_stats *)data);
1071
1072         data += sizeof(struct port_stats) / sizeof(u64);
1073         collect_sge_port_stats(adapter, pi, (struct queue_port_stats *)data);
1074 }
1075
1076 /*
1077  * Return a version number to identify the type of adapter.  The scheme is:
1078  * - bits 0..9: chip version
1079  * - bits 10..15: chip revision
1080  * - bits 16..23: register dump version
1081  */
1082 static inline unsigned int mk_adap_vers(const struct adapter *ap)
1083 {
1084         return 4 | (ap->params.rev << 10) | (1 << 16);
1085 }
1086
1087 static void reg_block_dump(struct adapter *ap, void *buf, unsigned int start,
1088                            unsigned int end)
1089 {
1090         u32 *p = buf + start;
1091
1092         for ( ; start <= end; start += sizeof(u32))
1093                 *p++ = t4_read_reg(ap, start);
1094 }
1095
1096 static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
1097                      void *buf)
1098 {
1099         static const unsigned int reg_ranges[] = {
1100                 0x1008, 0x1108,
1101                 0x1180, 0x11b4,
1102                 0x11fc, 0x123c,
1103                 0x1300, 0x173c,
1104                 0x1800, 0x18fc,
1105                 0x3000, 0x30d8,
1106                 0x30e0, 0x5924,
1107                 0x5960, 0x59d4,
1108                 0x5a00, 0x5af8,
1109                 0x6000, 0x6098,
1110                 0x6100, 0x6150,
1111                 0x6200, 0x6208,
1112                 0x6240, 0x6248,
1113                 0x6280, 0x6338,
1114                 0x6370, 0x638c,
1115                 0x6400, 0x643c,
1116                 0x6500, 0x6524,
1117                 0x6a00, 0x6a38,
1118                 0x6a60, 0x6a78,
1119                 0x6b00, 0x6b84,
1120                 0x6bf0, 0x6c84,
1121                 0x6cf0, 0x6d84,
1122                 0x6df0, 0x6e84,
1123                 0x6ef0, 0x6f84,
1124                 0x6ff0, 0x7084,
1125                 0x70f0, 0x7184,
1126                 0x71f0, 0x7284,
1127                 0x72f0, 0x7384,
1128                 0x73f0, 0x7450,
1129                 0x7500, 0x7530,
1130                 0x7600, 0x761c,
1131                 0x7680, 0x76cc,
1132                 0x7700, 0x7798,
1133                 0x77c0, 0x77fc,
1134                 0x7900, 0x79fc,
1135                 0x7b00, 0x7c38,
1136                 0x7d00, 0x7efc,
1137                 0x8dc0, 0x8e1c,
1138                 0x8e30, 0x8e78,
1139                 0x8ea0, 0x8f6c,
1140                 0x8fc0, 0x9074,
1141                 0x90fc, 0x90fc,
1142                 0x9400, 0x9458,
1143                 0x9600, 0x96bc,
1144                 0x9800, 0x9808,
1145                 0x9820, 0x983c,
1146                 0x9850, 0x9864,
1147                 0x9c00, 0x9c6c,
1148                 0x9c80, 0x9cec,
1149                 0x9d00, 0x9d6c,
1150                 0x9d80, 0x9dec,
1151                 0x9e00, 0x9e6c,
1152                 0x9e80, 0x9eec,
1153                 0x9f00, 0x9f6c,
1154                 0x9f80, 0x9fec,
1155                 0xd004, 0xd03c,
1156                 0xdfc0, 0xdfe0,
1157                 0xe000, 0xea7c,
1158                 0xf000, 0x11190,
1159                 0x19040, 0x1906c,
1160                 0x19078, 0x19080,
1161                 0x1908c, 0x19124,
1162                 0x19150, 0x191b0,
1163                 0x191d0, 0x191e8,
1164                 0x19238, 0x1924c,
1165                 0x193f8, 0x19474,
1166                 0x19490, 0x194f8,
1167                 0x19800, 0x19f30,
1168                 0x1a000, 0x1a06c,
1169                 0x1a0b0, 0x1a120,
1170                 0x1a128, 0x1a138,
1171                 0x1a190, 0x1a1c4,
1172                 0x1a1fc, 0x1a1fc,
1173                 0x1e040, 0x1e04c,
1174                 0x1e284, 0x1e28c,
1175                 0x1e2c0, 0x1e2c0,
1176                 0x1e2e0, 0x1e2e0,
1177                 0x1e300, 0x1e384,
1178                 0x1e3c0, 0x1e3c8,
1179                 0x1e440, 0x1e44c,
1180                 0x1e684, 0x1e68c,
1181                 0x1e6c0, 0x1e6c0,
1182                 0x1e6e0, 0x1e6e0,
1183                 0x1e700, 0x1e784,
1184                 0x1e7c0, 0x1e7c8,
1185                 0x1e840, 0x1e84c,
1186                 0x1ea84, 0x1ea8c,
1187                 0x1eac0, 0x1eac0,
1188                 0x1eae0, 0x1eae0,
1189                 0x1eb00, 0x1eb84,
1190                 0x1ebc0, 0x1ebc8,
1191                 0x1ec40, 0x1ec4c,
1192                 0x1ee84, 0x1ee8c,
1193                 0x1eec0, 0x1eec0,
1194                 0x1eee0, 0x1eee0,
1195                 0x1ef00, 0x1ef84,
1196                 0x1efc0, 0x1efc8,
1197                 0x1f040, 0x1f04c,
1198                 0x1f284, 0x1f28c,
1199                 0x1f2c0, 0x1f2c0,
1200                 0x1f2e0, 0x1f2e0,
1201                 0x1f300, 0x1f384,
1202                 0x1f3c0, 0x1f3c8,
1203                 0x1f440, 0x1f44c,
1204                 0x1f684, 0x1f68c,
1205                 0x1f6c0, 0x1f6c0,
1206                 0x1f6e0, 0x1f6e0,
1207                 0x1f700, 0x1f784,
1208                 0x1f7c0, 0x1f7c8,
1209                 0x1f840, 0x1f84c,
1210                 0x1fa84, 0x1fa8c,
1211                 0x1fac0, 0x1fac0,
1212                 0x1fae0, 0x1fae0,
1213                 0x1fb00, 0x1fb84,
1214                 0x1fbc0, 0x1fbc8,
1215                 0x1fc40, 0x1fc4c,
1216                 0x1fe84, 0x1fe8c,
1217                 0x1fec0, 0x1fec0,
1218                 0x1fee0, 0x1fee0,
1219                 0x1ff00, 0x1ff84,
1220                 0x1ffc0, 0x1ffc8,
1221                 0x20000, 0x2002c,
1222                 0x20100, 0x2013c,
1223                 0x20190, 0x201c8,
1224                 0x20200, 0x20318,
1225                 0x20400, 0x20528,
1226                 0x20540, 0x20614,
1227                 0x21000, 0x21040,
1228                 0x2104c, 0x21060,
1229                 0x210c0, 0x210ec,
1230                 0x21200, 0x21268,
1231                 0x21270, 0x21284,
1232                 0x212fc, 0x21388,
1233                 0x21400, 0x21404,
1234                 0x21500, 0x21518,
1235                 0x2152c, 0x2153c,
1236                 0x21550, 0x21554,
1237                 0x21600, 0x21600,
1238                 0x21608, 0x21628,
1239                 0x21630, 0x2163c,
1240                 0x21700, 0x2171c,
1241                 0x21780, 0x2178c,
1242                 0x21800, 0x21c38,
1243                 0x21c80, 0x21d7c,
1244                 0x21e00, 0x21e04,
1245                 0x22000, 0x2202c,
1246                 0x22100, 0x2213c,
1247                 0x22190, 0x221c8,
1248                 0x22200, 0x22318,
1249                 0x22400, 0x22528,
1250                 0x22540, 0x22614,
1251                 0x23000, 0x23040,
1252                 0x2304c, 0x23060,
1253                 0x230c0, 0x230ec,
1254                 0x23200, 0x23268,
1255                 0x23270, 0x23284,
1256                 0x232fc, 0x23388,
1257                 0x23400, 0x23404,
1258                 0x23500, 0x23518,
1259                 0x2352c, 0x2353c,
1260                 0x23550, 0x23554,
1261                 0x23600, 0x23600,
1262                 0x23608, 0x23628,
1263                 0x23630, 0x2363c,
1264                 0x23700, 0x2371c,
1265                 0x23780, 0x2378c,
1266                 0x23800, 0x23c38,
1267                 0x23c80, 0x23d7c,
1268                 0x23e00, 0x23e04,
1269                 0x24000, 0x2402c,
1270                 0x24100, 0x2413c,
1271                 0x24190, 0x241c8,
1272                 0x24200, 0x24318,
1273                 0x24400, 0x24528,
1274                 0x24540, 0x24614,
1275                 0x25000, 0x25040,
1276                 0x2504c, 0x25060,
1277                 0x250c0, 0x250ec,
1278                 0x25200, 0x25268,
1279                 0x25270, 0x25284,
1280                 0x252fc, 0x25388,
1281                 0x25400, 0x25404,
1282                 0x25500, 0x25518,
1283                 0x2552c, 0x2553c,
1284                 0x25550, 0x25554,
1285                 0x25600, 0x25600,
1286                 0x25608, 0x25628,
1287                 0x25630, 0x2563c,
1288                 0x25700, 0x2571c,
1289                 0x25780, 0x2578c,
1290                 0x25800, 0x25c38,
1291                 0x25c80, 0x25d7c,
1292                 0x25e00, 0x25e04,
1293                 0x26000, 0x2602c,
1294                 0x26100, 0x2613c,
1295                 0x26190, 0x261c8,
1296                 0x26200, 0x26318,
1297                 0x26400, 0x26528,
1298                 0x26540, 0x26614,
1299                 0x27000, 0x27040,
1300                 0x2704c, 0x27060,
1301                 0x270c0, 0x270ec,
1302                 0x27200, 0x27268,
1303                 0x27270, 0x27284,
1304                 0x272fc, 0x27388,
1305                 0x27400, 0x27404,
1306                 0x27500, 0x27518,
1307                 0x2752c, 0x2753c,
1308                 0x27550, 0x27554,
1309                 0x27600, 0x27600,
1310                 0x27608, 0x27628,
1311                 0x27630, 0x2763c,
1312                 0x27700, 0x2771c,
1313                 0x27780, 0x2778c,
1314                 0x27800, 0x27c38,
1315                 0x27c80, 0x27d7c,
1316                 0x27e00, 0x27e04
1317         };
1318
1319         int i;
1320         struct adapter *ap = netdev2adap(dev);
1321
1322         regs->version = mk_adap_vers(ap);
1323
1324         memset(buf, 0, T4_REGMAP_SIZE);
1325         for (i = 0; i < ARRAY_SIZE(reg_ranges); i += 2)
1326                 reg_block_dump(ap, buf, reg_ranges[i], reg_ranges[i + 1]);
1327 }
1328
1329 static int restart_autoneg(struct net_device *dev)
1330 {
1331         struct port_info *p = netdev_priv(dev);
1332
1333         if (!netif_running(dev))
1334                 return -EAGAIN;
1335         if (p->link_cfg.autoneg != AUTONEG_ENABLE)
1336                 return -EINVAL;
1337         t4_restart_aneg(p->adapter, p->adapter->fn, p->tx_chan);
1338         return 0;
1339 }
1340
1341 static int identify_port(struct net_device *dev,
1342                          enum ethtool_phys_id_state state)
1343 {
1344         unsigned int val;
1345         struct adapter *adap = netdev2adap(dev);
1346
1347         if (state == ETHTOOL_ID_ACTIVE)
1348                 val = 0xffff;
1349         else if (state == ETHTOOL_ID_INACTIVE)
1350                 val = 0;
1351         else
1352                 return -EINVAL;
1353
1354         return t4_identify_port(adap, adap->fn, netdev2pinfo(dev)->viid, val);
1355 }
1356
1357 static unsigned int from_fw_linkcaps(unsigned int type, unsigned int caps)
1358 {
1359         unsigned int v = 0;
1360
1361         if (type == FW_PORT_TYPE_BT_SGMII || type == FW_PORT_TYPE_BT_XFI ||
1362             type == FW_PORT_TYPE_BT_XAUI) {
1363                 v |= SUPPORTED_TP;
1364                 if (caps & FW_PORT_CAP_SPEED_100M)
1365                         v |= SUPPORTED_100baseT_Full;
1366                 if (caps & FW_PORT_CAP_SPEED_1G)
1367                         v |= SUPPORTED_1000baseT_Full;
1368                 if (caps & FW_PORT_CAP_SPEED_10G)
1369                         v |= SUPPORTED_10000baseT_Full;
1370         } else if (type == FW_PORT_TYPE_KX4 || type == FW_PORT_TYPE_KX) {
1371                 v |= SUPPORTED_Backplane;
1372                 if (caps & FW_PORT_CAP_SPEED_1G)
1373                         v |= SUPPORTED_1000baseKX_Full;
1374                 if (caps & FW_PORT_CAP_SPEED_10G)
1375                         v |= SUPPORTED_10000baseKX4_Full;
1376         } else if (type == FW_PORT_TYPE_KR)
1377                 v |= SUPPORTED_Backplane | SUPPORTED_10000baseKR_Full;
1378         else if (type == FW_PORT_TYPE_BP_AP)
1379                 v |= SUPPORTED_Backplane | SUPPORTED_10000baseR_FEC |
1380                      SUPPORTED_10000baseKR_Full | SUPPORTED_1000baseKX_Full;
1381         else if (type == FW_PORT_TYPE_BP4_AP)
1382                 v |= SUPPORTED_Backplane | SUPPORTED_10000baseR_FEC |
1383                      SUPPORTED_10000baseKR_Full | SUPPORTED_1000baseKX_Full |
1384                      SUPPORTED_10000baseKX4_Full;
1385         else if (type == FW_PORT_TYPE_FIBER_XFI ||
1386                  type == FW_PORT_TYPE_FIBER_XAUI || type == FW_PORT_TYPE_SFP)
1387                 v |= SUPPORTED_FIBRE;
1388
1389         if (caps & FW_PORT_CAP_ANEG)
1390                 v |= SUPPORTED_Autoneg;
1391         return v;
1392 }
1393
1394 static unsigned int to_fw_linkcaps(unsigned int caps)
1395 {
1396         unsigned int v = 0;
1397
1398         if (caps & ADVERTISED_100baseT_Full)
1399                 v |= FW_PORT_CAP_SPEED_100M;
1400         if (caps & ADVERTISED_1000baseT_Full)
1401                 v |= FW_PORT_CAP_SPEED_1G;
1402         if (caps & ADVERTISED_10000baseT_Full)
1403                 v |= FW_PORT_CAP_SPEED_10G;
1404         return v;
1405 }
1406
1407 static int get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1408 {
1409         const struct port_info *p = netdev_priv(dev);
1410
1411         if (p->port_type == FW_PORT_TYPE_BT_SGMII ||
1412             p->port_type == FW_PORT_TYPE_BT_XFI ||
1413             p->port_type == FW_PORT_TYPE_BT_XAUI)
1414                 cmd->port = PORT_TP;
1415         else if (p->port_type == FW_PORT_TYPE_FIBER_XFI ||
1416                  p->port_type == FW_PORT_TYPE_FIBER_XAUI)
1417                 cmd->port = PORT_FIBRE;
1418         else if (p->port_type == FW_PORT_TYPE_SFP) {
1419                 if (p->mod_type == FW_PORT_MOD_TYPE_TWINAX_PASSIVE ||
1420                     p->mod_type == FW_PORT_MOD_TYPE_TWINAX_ACTIVE)
1421                         cmd->port = PORT_DA;
1422                 else
1423                         cmd->port = PORT_FIBRE;
1424         } else
1425                 cmd->port = PORT_OTHER;
1426
1427         if (p->mdio_addr >= 0) {
1428                 cmd->phy_address = p->mdio_addr;
1429                 cmd->transceiver = XCVR_EXTERNAL;
1430                 cmd->mdio_support = p->port_type == FW_PORT_TYPE_BT_SGMII ?
1431                         MDIO_SUPPORTS_C22 : MDIO_SUPPORTS_C45;
1432         } else {
1433                 cmd->phy_address = 0;  /* not really, but no better option */
1434                 cmd->transceiver = XCVR_INTERNAL;
1435                 cmd->mdio_support = 0;
1436         }
1437
1438         cmd->supported = from_fw_linkcaps(p->port_type, p->link_cfg.supported);
1439         cmd->advertising = from_fw_linkcaps(p->port_type,
1440                                             p->link_cfg.advertising);
1441         ethtool_cmd_speed_set(cmd,
1442                               netif_carrier_ok(dev) ? p->link_cfg.speed : 0);
1443         cmd->duplex = DUPLEX_FULL;
1444         cmd->autoneg = p->link_cfg.autoneg;
1445         cmd->maxtxpkt = 0;
1446         cmd->maxrxpkt = 0;
1447         return 0;
1448 }
1449
1450 static unsigned int speed_to_caps(int speed)
1451 {
1452         if (speed == SPEED_100)
1453                 return FW_PORT_CAP_SPEED_100M;
1454         if (speed == SPEED_1000)
1455                 return FW_PORT_CAP_SPEED_1G;
1456         if (speed == SPEED_10000)
1457                 return FW_PORT_CAP_SPEED_10G;
1458         return 0;
1459 }
1460
1461 static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1462 {
1463         unsigned int cap;
1464         struct port_info *p = netdev_priv(dev);
1465         struct link_config *lc = &p->link_cfg;
1466         u32 speed = ethtool_cmd_speed(cmd);
1467
1468         if (cmd->duplex != DUPLEX_FULL)     /* only full-duplex supported */
1469                 return -EINVAL;
1470
1471         if (!(lc->supported & FW_PORT_CAP_ANEG)) {
1472                 /*
1473                  * PHY offers a single speed.  See if that's what's
1474                  * being requested.
1475                  */
1476                 if (cmd->autoneg == AUTONEG_DISABLE &&
1477                     (lc->supported & speed_to_caps(speed)))
1478                         return 0;
1479                 return -EINVAL;
1480         }
1481
1482         if (cmd->autoneg == AUTONEG_DISABLE) {
1483                 cap = speed_to_caps(speed);
1484
1485                 if (!(lc->supported & cap) || (speed == SPEED_1000) ||
1486                     (speed == SPEED_10000))
1487                         return -EINVAL;
1488                 lc->requested_speed = cap;
1489                 lc->advertising = 0;
1490         } else {
1491                 cap = to_fw_linkcaps(cmd->advertising);
1492                 if (!(lc->supported & cap))
1493                         return -EINVAL;
1494                 lc->requested_speed = 0;
1495                 lc->advertising = cap | FW_PORT_CAP_ANEG;
1496         }
1497         lc->autoneg = cmd->autoneg;
1498
1499         if (netif_running(dev))
1500                 return t4_link_start(p->adapter, p->adapter->fn, p->tx_chan,
1501                                      lc);
1502         return 0;
1503 }
1504
1505 static void get_pauseparam(struct net_device *dev,
1506                            struct ethtool_pauseparam *epause)
1507 {
1508         struct port_info *p = netdev_priv(dev);
1509
1510         epause->autoneg = (p->link_cfg.requested_fc & PAUSE_AUTONEG) != 0;
1511         epause->rx_pause = (p->link_cfg.fc & PAUSE_RX) != 0;
1512         epause->tx_pause = (p->link_cfg.fc & PAUSE_TX) != 0;
1513 }
1514
1515 static int set_pauseparam(struct net_device *dev,
1516                           struct ethtool_pauseparam *epause)
1517 {
1518         struct port_info *p = netdev_priv(dev);
1519         struct link_config *lc = &p->link_cfg;
1520
1521         if (epause->autoneg == AUTONEG_DISABLE)
1522                 lc->requested_fc = 0;
1523         else if (lc->supported & FW_PORT_CAP_ANEG)
1524                 lc->requested_fc = PAUSE_AUTONEG;
1525         else
1526                 return -EINVAL;
1527
1528         if (epause->rx_pause)
1529                 lc->requested_fc |= PAUSE_RX;
1530         if (epause->tx_pause)
1531                 lc->requested_fc |= PAUSE_TX;
1532         if (netif_running(dev))
1533                 return t4_link_start(p->adapter, p->adapter->fn, p->tx_chan,
1534                                      lc);
1535         return 0;
1536 }
1537
1538 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
1539 {
1540         const struct port_info *pi = netdev_priv(dev);
1541         const struct sge *s = &pi->adapter->sge;
1542
1543         e->rx_max_pending = MAX_RX_BUFFERS;
1544         e->rx_mini_max_pending = MAX_RSPQ_ENTRIES;
1545         e->rx_jumbo_max_pending = 0;
1546         e->tx_max_pending = MAX_TXQ_ENTRIES;
1547
1548         e->rx_pending = s->ethrxq[pi->first_qset].fl.size - 8;
1549         e->rx_mini_pending = s->ethrxq[pi->first_qset].rspq.size;
1550         e->rx_jumbo_pending = 0;
1551         e->tx_pending = s->ethtxq[pi->first_qset].q.size;
1552 }
1553
1554 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
1555 {
1556         int i;
1557         const struct port_info *pi = netdev_priv(dev);
1558         struct adapter *adapter = pi->adapter;
1559         struct sge *s = &adapter->sge;
1560
1561         if (e->rx_pending > MAX_RX_BUFFERS || e->rx_jumbo_pending ||
1562             e->tx_pending > MAX_TXQ_ENTRIES ||
1563             e->rx_mini_pending > MAX_RSPQ_ENTRIES ||
1564             e->rx_mini_pending < MIN_RSPQ_ENTRIES ||
1565             e->rx_pending < MIN_FL_ENTRIES || e->tx_pending < MIN_TXQ_ENTRIES)
1566                 return -EINVAL;
1567
1568         if (adapter->flags & FULL_INIT_DONE)
1569                 return -EBUSY;
1570
1571         for (i = 0; i < pi->nqsets; ++i) {
1572                 s->ethtxq[pi->first_qset + i].q.size = e->tx_pending;
1573                 s->ethrxq[pi->first_qset + i].fl.size = e->rx_pending + 8;
1574                 s->ethrxq[pi->first_qset + i].rspq.size = e->rx_mini_pending;
1575         }
1576         return 0;
1577 }
1578
1579 static int closest_timer(const struct sge *s, int time)
1580 {
1581         int i, delta, match = 0, min_delta = INT_MAX;
1582
1583         for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) {
1584                 delta = time - s->timer_val[i];
1585                 if (delta < 0)
1586                         delta = -delta;
1587                 if (delta < min_delta) {
1588                         min_delta = delta;
1589                         match = i;
1590                 }
1591         }
1592         return match;
1593 }
1594
1595 static int closest_thres(const struct sge *s, int thres)
1596 {
1597         int i, delta, match = 0, min_delta = INT_MAX;
1598
1599         for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) {
1600                 delta = thres - s->counter_val[i];
1601                 if (delta < 0)
1602                         delta = -delta;
1603                 if (delta < min_delta) {
1604                         min_delta = delta;
1605                         match = i;
1606                 }
1607         }
1608         return match;
1609 }
1610
1611 /*
1612  * Return a queue's interrupt hold-off time in us.  0 means no timer.
1613  */
1614 static unsigned int qtimer_val(const struct adapter *adap,
1615                                const struct sge_rspq *q)
1616 {
1617         unsigned int idx = q->intr_params >> 1;
1618
1619         return idx < SGE_NTIMERS ? adap->sge.timer_val[idx] : 0;
1620 }
1621
1622 /**
1623  *      set_rxq_intr_params - set a queue's interrupt holdoff parameters
1624  *      @adap: the adapter
1625  *      @q: the Rx queue
1626  *      @us: the hold-off time in us, or 0 to disable timer
1627  *      @cnt: the hold-off packet count, or 0 to disable counter
1628  *
1629  *      Sets an Rx queue's interrupt hold-off time and packet count.  At least
1630  *      one of the two needs to be enabled for the queue to generate interrupts.
1631  */
1632 static int set_rxq_intr_params(struct adapter *adap, struct sge_rspq *q,
1633                                unsigned int us, unsigned int cnt)
1634 {
1635         if ((us | cnt) == 0)
1636                 cnt = 1;
1637
1638         if (cnt) {
1639                 int err;
1640                 u32 v, new_idx;
1641
1642                 new_idx = closest_thres(&adap->sge, cnt);
1643                 if (q->desc && q->pktcnt_idx != new_idx) {
1644                         /* the queue has already been created, update it */
1645                         v = FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) |
1646                             FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) |
1647                             FW_PARAMS_PARAM_YZ(q->cntxt_id);
1648                         err = t4_set_params(adap, adap->fn, adap->fn, 0, 1, &v,
1649                                             &new_idx);
1650                         if (err)
1651                                 return err;
1652                 }
1653                 q->pktcnt_idx = new_idx;
1654         }
1655
1656         us = us == 0 ? 6 : closest_timer(&adap->sge, us);
1657         q->intr_params = QINTR_TIMER_IDX(us) | (cnt > 0 ? QINTR_CNT_EN : 0);
1658         return 0;
1659 }
1660
1661 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
1662 {
1663         const struct port_info *pi = netdev_priv(dev);
1664         struct adapter *adap = pi->adapter;
1665
1666         return set_rxq_intr_params(adap, &adap->sge.ethrxq[pi->first_qset].rspq,
1667                         c->rx_coalesce_usecs, c->rx_max_coalesced_frames);
1668 }
1669
1670 static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
1671 {
1672         const struct port_info *pi = netdev_priv(dev);
1673         const struct adapter *adap = pi->adapter;
1674         const struct sge_rspq *rq = &adap->sge.ethrxq[pi->first_qset].rspq;
1675
1676         c->rx_coalesce_usecs = qtimer_val(adap, rq);
1677         c->rx_max_coalesced_frames = (rq->intr_params & QINTR_CNT_EN) ?
1678                 adap->sge.counter_val[rq->pktcnt_idx] : 0;
1679         return 0;
1680 }
1681
1682 /**
1683  *      eeprom_ptov - translate a physical EEPROM address to virtual
1684  *      @phys_addr: the physical EEPROM address
1685  *      @fn: the PCI function number
1686  *      @sz: size of function-specific area
1687  *
1688  *      Translate a physical EEPROM address to virtual.  The first 1K is
1689  *      accessed through virtual addresses starting at 31K, the rest is
1690  *      accessed through virtual addresses starting at 0.
1691  *
1692  *      The mapping is as follows:
1693  *      [0..1K) -> [31K..32K)
1694  *      [1K..1K+A) -> [31K-A..31K)
1695  *      [1K+A..ES) -> [0..ES-A-1K)
1696  *
1697  *      where A = @fn * @sz, and ES = EEPROM size.
1698  */
1699 static int eeprom_ptov(unsigned int phys_addr, unsigned int fn, unsigned int sz)
1700 {
1701         fn *= sz;
1702         if (phys_addr < 1024)
1703                 return phys_addr + (31 << 10);
1704         if (phys_addr < 1024 + fn)
1705                 return 31744 - fn + phys_addr - 1024;
1706         if (phys_addr < EEPROMSIZE)
1707                 return phys_addr - 1024 - fn;
1708         return -EINVAL;
1709 }
1710
1711 /*
1712  * The next two routines implement eeprom read/write from physical addresses.
1713  */
1714 static int eeprom_rd_phys(struct adapter *adap, unsigned int phys_addr, u32 *v)
1715 {
1716         int vaddr = eeprom_ptov(phys_addr, adap->fn, EEPROMPFSIZE);
1717
1718         if (vaddr >= 0)
1719                 vaddr = pci_read_vpd(adap->pdev, vaddr, sizeof(u32), v);
1720         return vaddr < 0 ? vaddr : 0;
1721 }
1722
1723 static int eeprom_wr_phys(struct adapter *adap, unsigned int phys_addr, u32 v)
1724 {
1725         int vaddr = eeprom_ptov(phys_addr, adap->fn, EEPROMPFSIZE);
1726
1727         if (vaddr >= 0)
1728                 vaddr = pci_write_vpd(adap->pdev, vaddr, sizeof(u32), &v);
1729         return vaddr < 0 ? vaddr : 0;
1730 }
1731
1732 #define EEPROM_MAGIC 0x38E2F10C
1733
1734 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e,
1735                       u8 *data)
1736 {
1737         int i, err = 0;
1738         struct adapter *adapter = netdev2adap(dev);
1739
1740         u8 *buf = kmalloc(EEPROMSIZE, GFP_KERNEL);
1741         if (!buf)
1742                 return -ENOMEM;
1743
1744         e->magic = EEPROM_MAGIC;
1745         for (i = e->offset & ~3; !err && i < e->offset + e->len; i += 4)
1746                 err = eeprom_rd_phys(adapter, i, (u32 *)&buf[i]);
1747
1748         if (!err)
1749                 memcpy(data, buf + e->offset, e->len);
1750         kfree(buf);
1751         return err;
1752 }
1753
1754 static int set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
1755                       u8 *data)
1756 {
1757         u8 *buf;
1758         int err = 0;
1759         u32 aligned_offset, aligned_len, *p;
1760         struct adapter *adapter = netdev2adap(dev);
1761
1762         if (eeprom->magic != EEPROM_MAGIC)
1763                 return -EINVAL;
1764
1765         aligned_offset = eeprom->offset & ~3;
1766         aligned_len = (eeprom->len + (eeprom->offset & 3) + 3) & ~3;
1767
1768         if (adapter->fn > 0) {
1769                 u32 start = 1024 + adapter->fn * EEPROMPFSIZE;
1770
1771                 if (aligned_offset < start ||
1772                     aligned_offset + aligned_len > start + EEPROMPFSIZE)
1773                         return -EPERM;
1774         }
1775
1776         if (aligned_offset != eeprom->offset || aligned_len != eeprom->len) {
1777                 /*
1778                  * RMW possibly needed for first or last words.
1779                  */
1780                 buf = kmalloc(aligned_len, GFP_KERNEL);
1781                 if (!buf)
1782                         return -ENOMEM;
1783                 err = eeprom_rd_phys(adapter, aligned_offset, (u32 *)buf);
1784                 if (!err && aligned_len > 4)
1785                         err = eeprom_rd_phys(adapter,
1786                                              aligned_offset + aligned_len - 4,
1787                                              (u32 *)&buf[aligned_len - 4]);
1788                 if (err)
1789                         goto out;
1790                 memcpy(buf + (eeprom->offset & 3), data, eeprom->len);
1791         } else
1792                 buf = data;
1793
1794         err = t4_seeprom_wp(adapter, false);
1795         if (err)
1796                 goto out;
1797
1798         for (p = (u32 *)buf; !err && aligned_len; aligned_len -= 4, p++) {
1799                 err = eeprom_wr_phys(adapter, aligned_offset, *p);
1800                 aligned_offset += 4;
1801         }
1802
1803         if (!err)
1804                 err = t4_seeprom_wp(adapter, true);
1805 out:
1806         if (buf != data)
1807                 kfree(buf);
1808         return err;
1809 }
1810
1811 static int set_flash(struct net_device *netdev, struct ethtool_flash *ef)
1812 {
1813         int ret;
1814         const struct firmware *fw;
1815         struct adapter *adap = netdev2adap(netdev);
1816
1817         ef->data[sizeof(ef->data) - 1] = '\0';
1818         ret = request_firmware(&fw, ef->data, adap->pdev_dev);
1819         if (ret < 0)
1820                 return ret;
1821
1822         ret = t4_load_fw(adap, fw->data, fw->size);
1823         release_firmware(fw);
1824         if (!ret)
1825                 dev_info(adap->pdev_dev, "loaded firmware %s\n", ef->data);
1826         return ret;
1827 }
1828
1829 #define WOL_SUPPORTED (WAKE_BCAST | WAKE_MAGIC)
1830 #define BCAST_CRC 0xa0ccc1a6
1831
1832 static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1833 {
1834         wol->supported = WAKE_BCAST | WAKE_MAGIC;
1835         wol->wolopts = netdev2adap(dev)->wol;
1836         memset(&wol->sopass, 0, sizeof(wol->sopass));
1837 }
1838
1839 static int set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1840 {
1841         int err = 0;
1842         struct port_info *pi = netdev_priv(dev);
1843
1844         if (wol->wolopts & ~WOL_SUPPORTED)
1845                 return -EINVAL;
1846         t4_wol_magic_enable(pi->adapter, pi->tx_chan,
1847                             (wol->wolopts & WAKE_MAGIC) ? dev->dev_addr : NULL);
1848         if (wol->wolopts & WAKE_BCAST) {
1849                 err = t4_wol_pat_enable(pi->adapter, pi->tx_chan, 0xfe, ~0ULL,
1850                                         ~0ULL, 0, false);
1851                 if (!err)
1852                         err = t4_wol_pat_enable(pi->adapter, pi->tx_chan, 1,
1853                                                 ~6ULL, ~0ULL, BCAST_CRC, true);
1854         } else
1855                 t4_wol_pat_enable(pi->adapter, pi->tx_chan, 0, 0, 0, 0, false);
1856         return err;
1857 }
1858
1859 static int cxgb_set_features(struct net_device *dev, netdev_features_t features)
1860 {
1861         const struct port_info *pi = netdev_priv(dev);
1862         netdev_features_t changed = dev->features ^ features;
1863         int err;
1864
1865         if (!(changed & NETIF_F_HW_VLAN_RX))
1866                 return 0;
1867
1868         err = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, -1,
1869                             -1, -1, -1,
1870                             !!(features & NETIF_F_HW_VLAN_RX), true);
1871         if (unlikely(err))
1872                 dev->features = features ^ NETIF_F_HW_VLAN_RX;
1873         return err;
1874 }
1875
1876 static u32 get_rss_table_size(struct net_device *dev)
1877 {
1878         const struct port_info *pi = netdev_priv(dev);
1879
1880         return pi->rss_size;
1881 }
1882
1883 static int get_rss_table(struct net_device *dev, u32 *p)
1884 {
1885         const struct port_info *pi = netdev_priv(dev);
1886         unsigned int n = pi->rss_size;
1887
1888         while (n--)
1889                 p[n] = pi->rss[n];
1890         return 0;
1891 }
1892
1893 static int set_rss_table(struct net_device *dev, const u32 *p)
1894 {
1895         unsigned int i;
1896         struct port_info *pi = netdev_priv(dev);
1897
1898         for (i = 0; i < pi->rss_size; i++)
1899                 pi->rss[i] = p[i];
1900         if (pi->adapter->flags & FULL_INIT_DONE)
1901                 return write_rss(pi, pi->rss);
1902         return 0;
1903 }
1904
1905 static int get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
1906                      u32 *rules)
1907 {
1908         const struct port_info *pi = netdev_priv(dev);
1909
1910         switch (info->cmd) {
1911         case ETHTOOL_GRXFH: {
1912                 unsigned int v = pi->rss_mode;
1913
1914                 info->data = 0;
1915                 switch (info->flow_type) {
1916                 case TCP_V4_FLOW:
1917                         if (v & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN)
1918                                 info->data = RXH_IP_SRC | RXH_IP_DST |
1919                                              RXH_L4_B_0_1 | RXH_L4_B_2_3;
1920                         else if (v & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN)
1921                                 info->data = RXH_IP_SRC | RXH_IP_DST;
1922                         break;
1923                 case UDP_V4_FLOW:
1924                         if ((v & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN) &&
1925                             (v & FW_RSS_VI_CONFIG_CMD_UDPEN))
1926                                 info->data = RXH_IP_SRC | RXH_IP_DST |
1927                                              RXH_L4_B_0_1 | RXH_L4_B_2_3;
1928                         else if (v & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN)
1929                                 info->data = RXH_IP_SRC | RXH_IP_DST;
1930                         break;
1931                 case SCTP_V4_FLOW:
1932                 case AH_ESP_V4_FLOW:
1933                 case IPV4_FLOW:
1934                         if (v & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN)
1935                                 info->data = RXH_IP_SRC | RXH_IP_DST;
1936                         break;
1937                 case TCP_V6_FLOW:
1938                         if (v & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN)
1939                                 info->data = RXH_IP_SRC | RXH_IP_DST |
1940                                              RXH_L4_B_0_1 | RXH_L4_B_2_3;
1941                         else if (v & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN)
1942                                 info->data = RXH_IP_SRC | RXH_IP_DST;
1943                         break;
1944                 case UDP_V6_FLOW:
1945                         if ((v & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN) &&
1946                             (v & FW_RSS_VI_CONFIG_CMD_UDPEN))
1947                                 info->data = RXH_IP_SRC | RXH_IP_DST |
1948                                              RXH_L4_B_0_1 | RXH_L4_B_2_3;
1949                         else if (v & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN)
1950                                 info->data = RXH_IP_SRC | RXH_IP_DST;
1951                         break;
1952                 case SCTP_V6_FLOW:
1953                 case AH_ESP_V6_FLOW:
1954                 case IPV6_FLOW:
1955                         if (v & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN)
1956                                 info->data = RXH_IP_SRC | RXH_IP_DST;
1957                         break;
1958                 }
1959                 return 0;
1960         }
1961         case ETHTOOL_GRXRINGS:
1962                 info->data = pi->nqsets;
1963                 return 0;
1964         }
1965         return -EOPNOTSUPP;
1966 }
1967
1968 static const struct ethtool_ops cxgb_ethtool_ops = {
1969         .get_settings      = get_settings,
1970         .set_settings      = set_settings,
1971         .get_drvinfo       = get_drvinfo,
1972         .get_msglevel      = get_msglevel,
1973         .set_msglevel      = set_msglevel,
1974         .get_ringparam     = get_sge_param,
1975         .set_ringparam     = set_sge_param,
1976         .get_coalesce      = get_coalesce,
1977         .set_coalesce      = set_coalesce,
1978         .get_eeprom_len    = get_eeprom_len,
1979         .get_eeprom        = get_eeprom,
1980         .set_eeprom        = set_eeprom,
1981         .get_pauseparam    = get_pauseparam,
1982         .set_pauseparam    = set_pauseparam,
1983         .get_link          = ethtool_op_get_link,
1984         .get_strings       = get_strings,
1985         .set_phys_id       = identify_port,
1986         .nway_reset        = restart_autoneg,
1987         .get_sset_count    = get_sset_count,
1988         .get_ethtool_stats = get_stats,
1989         .get_regs_len      = get_regs_len,
1990         .get_regs          = get_regs,
1991         .get_wol           = get_wol,
1992         .set_wol           = set_wol,
1993         .get_rxnfc         = get_rxnfc,
1994         .get_rxfh_indir_size = get_rss_table_size,
1995         .get_rxfh_indir    = get_rss_table,
1996         .set_rxfh_indir    = set_rss_table,
1997         .flash_device      = set_flash,
1998 };
1999
2000 /*
2001  * debugfs support
2002  */
2003 static ssize_t mem_read(struct file *file, char __user *buf, size_t count,
2004                         loff_t *ppos)
2005 {
2006         loff_t pos = *ppos;
2007         loff_t avail = file->f_path.dentry->d_inode->i_size;
2008         unsigned int mem = (uintptr_t)file->private_data & 3;
2009         struct adapter *adap = file->private_data - mem;
2010
2011         if (pos < 0)
2012                 return -EINVAL;
2013         if (pos >= avail)
2014                 return 0;
2015         if (count > avail - pos)
2016                 count = avail - pos;
2017
2018         while (count) {
2019                 size_t len;
2020                 int ret, ofst;
2021                 __be32 data[16];
2022
2023                 if (mem == MEM_MC)
2024                         ret = t4_mc_read(adap, pos, data, NULL);
2025                 else
2026                         ret = t4_edc_read(adap, mem, pos, data, NULL);
2027                 if (ret)
2028                         return ret;
2029
2030                 ofst = pos % sizeof(data);
2031                 len = min(count, sizeof(data) - ofst);
2032                 if (copy_to_user(buf, (u8 *)data + ofst, len))
2033                         return -EFAULT;
2034
2035                 buf += len;
2036                 pos += len;
2037                 count -= len;
2038         }
2039         count = pos - *ppos;
2040         *ppos = pos;
2041         return count;
2042 }
2043
2044 static const struct file_operations mem_debugfs_fops = {
2045         .owner   = THIS_MODULE,
2046         .open    = simple_open,
2047         .read    = mem_read,
2048         .llseek  = default_llseek,
2049 };
2050
2051 static void __devinit add_debugfs_mem(struct adapter *adap, const char *name,
2052                                       unsigned int idx, unsigned int size_mb)
2053 {
2054         struct dentry *de;
2055
2056         de = debugfs_create_file(name, S_IRUSR, adap->debugfs_root,
2057                                  (void *)adap + idx, &mem_debugfs_fops);
2058         if (de && de->d_inode)
2059                 de->d_inode->i_size = size_mb << 20;
2060 }
2061
2062 static int __devinit setup_debugfs(struct adapter *adap)
2063 {
2064         int i;
2065
2066         if (IS_ERR_OR_NULL(adap->debugfs_root))
2067                 return -1;
2068
2069         i = t4_read_reg(adap, MA_TARGET_MEM_ENABLE);
2070         if (i & EDRAM0_ENABLE)
2071                 add_debugfs_mem(adap, "edc0", MEM_EDC0, 5);
2072         if (i & EDRAM1_ENABLE)
2073                 add_debugfs_mem(adap, "edc1", MEM_EDC1, 5);
2074         if (i & EXT_MEM_ENABLE)
2075                 add_debugfs_mem(adap, "mc", MEM_MC,
2076                         EXT_MEM_SIZE_GET(t4_read_reg(adap, MA_EXT_MEMORY_BAR)));
2077         if (adap->l2t)
2078                 debugfs_create_file("l2t", S_IRUSR, adap->debugfs_root, adap,
2079                                     &t4_l2t_fops);
2080         return 0;
2081 }
2082
2083 /*
2084  * upper-layer driver support
2085  */
2086
2087 /*
2088  * Allocate an active-open TID and set it to the supplied value.
2089  */
2090 int cxgb4_alloc_atid(struct tid_info *t, void *data)
2091 {
2092         int atid = -1;
2093
2094         spin_lock_bh(&t->atid_lock);
2095         if (t->afree) {
2096                 union aopen_entry *p = t->afree;
2097
2098                 atid = p - t->atid_tab;
2099                 t->afree = p->next;
2100                 p->data = data;
2101                 t->atids_in_use++;
2102         }
2103         spin_unlock_bh(&t->atid_lock);
2104         return atid;
2105 }
2106 EXPORT_SYMBOL(cxgb4_alloc_atid);
2107
2108 /*
2109  * Release an active-open TID.
2110  */
2111 void cxgb4_free_atid(struct tid_info *t, unsigned int atid)
2112 {
2113         union aopen_entry *p = &t->atid_tab[atid];
2114
2115         spin_lock_bh(&t->atid_lock);
2116         p->next = t->afree;
2117         t->afree = p;
2118         t->atids_in_use--;
2119         spin_unlock_bh(&t->atid_lock);
2120 }
2121 EXPORT_SYMBOL(cxgb4_free_atid);
2122
2123 /*
2124  * Allocate a server TID and set it to the supplied value.
2125  */
2126 int cxgb4_alloc_stid(struct tid_info *t, int family, void *data)
2127 {
2128         int stid;
2129
2130         spin_lock_bh(&t->stid_lock);
2131         if (family == PF_INET) {
2132                 stid = find_first_zero_bit(t->stid_bmap, t->nstids);
2133                 if (stid < t->nstids)
2134                         __set_bit(stid, t->stid_bmap);
2135                 else
2136                         stid = -1;
2137         } else {
2138                 stid = bitmap_find_free_region(t->stid_bmap, t->nstids, 2);
2139                 if (stid < 0)
2140                         stid = -1;
2141         }
2142         if (stid >= 0) {
2143                 t->stid_tab[stid].data = data;
2144                 stid += t->stid_base;
2145                 t->stids_in_use++;
2146         }
2147         spin_unlock_bh(&t->stid_lock);
2148         return stid;
2149 }
2150 EXPORT_SYMBOL(cxgb4_alloc_stid);
2151
2152 /*
2153  * Release a server TID.
2154  */
2155 void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family)
2156 {
2157         stid -= t->stid_base;
2158         spin_lock_bh(&t->stid_lock);
2159         if (family == PF_INET)
2160                 __clear_bit(stid, t->stid_bmap);
2161         else
2162                 bitmap_release_region(t->stid_bmap, stid, 2);
2163         t->stid_tab[stid].data = NULL;
2164         t->stids_in_use--;
2165         spin_unlock_bh(&t->stid_lock);
2166 }
2167 EXPORT_SYMBOL(cxgb4_free_stid);
2168
2169 /*
2170  * Populate a TID_RELEASE WR.  Caller must properly size the skb.
2171  */
2172 static void mk_tid_release(struct sk_buff *skb, unsigned int chan,
2173                            unsigned int tid)
2174 {
2175         struct cpl_tid_release *req;
2176
2177         set_wr_txq(skb, CPL_PRIORITY_SETUP, chan);
2178         req = (struct cpl_tid_release *)__skb_put(skb, sizeof(*req));
2179         INIT_TP_WR(req, tid);
2180         OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid));
2181 }
2182
2183 /*
2184  * Queue a TID release request and if necessary schedule a work queue to
2185  * process it.
2186  */
2187 static void cxgb4_queue_tid_release(struct tid_info *t, unsigned int chan,
2188                                     unsigned int tid)
2189 {
2190         void **p = &t->tid_tab[tid];
2191         struct adapter *adap = container_of(t, struct adapter, tids);
2192
2193         spin_lock_bh(&adap->tid_release_lock);
2194         *p = adap->tid_release_head;
2195         /* Low 2 bits encode the Tx channel number */
2196         adap->tid_release_head = (void **)((uintptr_t)p | chan);
2197         if (!adap->tid_release_task_busy) {
2198                 adap->tid_release_task_busy = true;
2199                 schedule_work(&adap->tid_release_task);
2200         }
2201         spin_unlock_bh(&adap->tid_release_lock);
2202 }
2203
2204 /*
2205  * Process the list of pending TID release requests.
2206  */
2207 static void process_tid_release_list(struct work_struct *work)
2208 {
2209         struct sk_buff *skb;
2210         struct adapter *adap;
2211
2212         adap = container_of(work, struct adapter, tid_release_task);
2213
2214         spin_lock_bh(&adap->tid_release_lock);
2215         while (adap->tid_release_head) {
2216                 void **p = adap->tid_release_head;
2217                 unsigned int chan = (uintptr_t)p & 3;
2218                 p = (void *)p - chan;
2219
2220                 adap->tid_release_head = *p;
2221                 *p = NULL;
2222                 spin_unlock_bh(&adap->tid_release_lock);
2223
2224                 while (!(skb = alloc_skb(sizeof(struct cpl_tid_release),
2225                                          GFP_KERNEL)))
2226                         schedule_timeout_uninterruptible(1);
2227
2228                 mk_tid_release(skb, chan, p - adap->tids.tid_tab);
2229                 t4_ofld_send(adap, skb);
2230                 spin_lock_bh(&adap->tid_release_lock);
2231         }
2232         adap->tid_release_task_busy = false;
2233         spin_unlock_bh(&adap->tid_release_lock);
2234 }
2235
2236 /*
2237  * Release a TID and inform HW.  If we are unable to allocate the release
2238  * message we defer to a work queue.
2239  */
2240 void cxgb4_remove_tid(struct tid_info *t, unsigned int chan, unsigned int tid)
2241 {
2242         void *old;
2243         struct sk_buff *skb;
2244         struct adapter *adap = container_of(t, struct adapter, tids);
2245
2246         old = t->tid_tab[tid];
2247         skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC);
2248         if (likely(skb)) {
2249                 t->tid_tab[tid] = NULL;
2250                 mk_tid_release(skb, chan, tid);
2251                 t4_ofld_send(adap, skb);
2252         } else
2253                 cxgb4_queue_tid_release(t, chan, tid);
2254         if (old)
2255                 atomic_dec(&t->tids_in_use);
2256 }
2257 EXPORT_SYMBOL(cxgb4_remove_tid);
2258
2259 /*
2260  * Allocate and initialize the TID tables.  Returns 0 on success.
2261  */
2262 static int tid_init(struct tid_info *t)
2263 {
2264         size_t size;
2265         unsigned int natids = t->natids;
2266
2267         size = t->ntids * sizeof(*t->tid_tab) + natids * sizeof(*t->atid_tab) +
2268                t->nstids * sizeof(*t->stid_tab) +
2269                BITS_TO_LONGS(t->nstids) * sizeof(long);
2270         t->tid_tab = t4_alloc_mem(size);
2271         if (!t->tid_tab)
2272                 return -ENOMEM;
2273
2274         t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids];
2275         t->stid_tab = (struct serv_entry *)&t->atid_tab[natids];
2276         t->stid_bmap = (unsigned long *)&t->stid_tab[t->nstids];
2277         spin_lock_init(&t->stid_lock);
2278         spin_lock_init(&t->atid_lock);
2279
2280         t->stids_in_use = 0;
2281         t->afree = NULL;
2282         t->atids_in_use = 0;
2283         atomic_set(&t->tids_in_use, 0);
2284
2285         /* Setup the free list for atid_tab and clear the stid bitmap. */
2286         if (natids) {
2287                 while (--natids)
2288                         t->atid_tab[natids - 1].next = &t->atid_tab[natids];
2289                 t->afree = t->atid_tab;
2290         }
2291         bitmap_zero(t->stid_bmap, t->nstids);
2292         return 0;
2293 }
2294
2295 /**
2296  *      cxgb4_create_server - create an IP server
2297  *      @dev: the device
2298  *      @stid: the server TID
2299  *      @sip: local IP address to bind server to
2300  *      @sport: the server's TCP port
2301  *      @queue: queue to direct messages from this server to
2302  *
2303  *      Create an IP server for the given port and address.
2304  *      Returns <0 on error and one of the %NET_XMIT_* values on success.
2305  */
2306 int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
2307                         __be32 sip, __be16 sport, unsigned int queue)
2308 {
2309         unsigned int chan;
2310         struct sk_buff *skb;
2311         struct adapter *adap;
2312         struct cpl_pass_open_req *req;
2313
2314         skb = alloc_skb(sizeof(*req), GFP_KERNEL);
2315         if (!skb)
2316                 return -ENOMEM;
2317
2318         adap = netdev2adap(dev);
2319         req = (struct cpl_pass_open_req *)__skb_put(skb, sizeof(*req));
2320         INIT_TP_WR(req, 0);
2321         OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, stid));
2322         req->local_port = sport;
2323         req->peer_port = htons(0);
2324         req->local_ip = sip;
2325         req->peer_ip = htonl(0);
2326         chan = rxq_to_chan(&adap->sge, queue);
2327         req->opt0 = cpu_to_be64(TX_CHAN(chan));
2328         req->opt1 = cpu_to_be64(CONN_POLICY_ASK |
2329                                 SYN_RSS_ENABLE | SYN_RSS_QUEUE(queue));
2330         return t4_mgmt_tx(adap, skb);
2331 }
2332 EXPORT_SYMBOL(cxgb4_create_server);
2333
2334 /**
2335  *      cxgb4_best_mtu - find the entry in the MTU table closest to an MTU
2336  *      @mtus: the HW MTU table
2337  *      @mtu: the target MTU
2338  *      @idx: index of selected entry in the MTU table
2339  *
2340  *      Returns the index and the value in the HW MTU table that is closest to
2341  *      but does not exceed @mtu, unless @mtu is smaller than any value in the
2342  *      table, in which case that smallest available value is selected.
2343  */
2344 unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu,
2345                             unsigned int *idx)
2346 {
2347         unsigned int i = 0;
2348
2349         while (i < NMTUS - 1 && mtus[i + 1] <= mtu)
2350                 ++i;
2351         if (idx)
2352                 *idx = i;
2353         return mtus[i];
2354 }
2355 EXPORT_SYMBOL(cxgb4_best_mtu);
2356
2357 /**
2358  *      cxgb4_port_chan - get the HW channel of a port
2359  *      @dev: the net device for the port
2360  *
2361  *      Return the HW Tx channel of the given port.
2362  */
2363 unsigned int cxgb4_port_chan(const struct net_device *dev)
2364 {
2365         return netdev2pinfo(dev)->tx_chan;
2366 }
2367 EXPORT_SYMBOL(cxgb4_port_chan);
2368
2369 /**
2370  *      cxgb4_port_viid - get the VI id of a port
2371  *      @dev: the net device for the port
2372  *
2373  *      Return the VI id of the given port.
2374  */
2375 unsigned int cxgb4_port_viid(const struct net_device *dev)
2376 {
2377         return netdev2pinfo(dev)->viid;
2378 }
2379 EXPORT_SYMBOL(cxgb4_port_viid);
2380
2381 /**
2382  *      cxgb4_port_idx - get the index of a port
2383  *      @dev: the net device for the port
2384  *
2385  *      Return the index of the given port.
2386  */
2387 unsigned int cxgb4_port_idx(const struct net_device *dev)
2388 {
2389         return netdev2pinfo(dev)->port_id;
2390 }
2391 EXPORT_SYMBOL(cxgb4_port_idx);
2392
2393 void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4,
2394                          struct tp_tcp_stats *v6)
2395 {
2396         struct adapter *adap = pci_get_drvdata(pdev);
2397
2398         spin_lock(&adap->stats_lock);
2399         t4_tp_get_tcp_stats(adap, v4, v6);
2400         spin_unlock(&adap->stats_lock);
2401 }
2402 EXPORT_SYMBOL(cxgb4_get_tcp_stats);
2403
2404 void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask,
2405                       const unsigned int *pgsz_order)
2406 {
2407         struct adapter *adap = netdev2adap(dev);
2408
2409         t4_write_reg(adap, ULP_RX_ISCSI_TAGMASK, tag_mask);
2410         t4_write_reg(adap, ULP_RX_ISCSI_PSZ, HPZ0(pgsz_order[0]) |
2411                      HPZ1(pgsz_order[1]) | HPZ2(pgsz_order[2]) |
2412                      HPZ3(pgsz_order[3]));
2413 }
2414 EXPORT_SYMBOL(cxgb4_iscsi_init);
2415
2416 static struct pci_driver cxgb4_driver;
2417
2418 static void check_neigh_update(struct neighbour *neigh)
2419 {
2420         const struct device *parent;
2421         const struct net_device *netdev = neigh->dev;
2422
2423         if (netdev->priv_flags & IFF_802_1Q_VLAN)
2424                 netdev = vlan_dev_real_dev(netdev);
2425         parent = netdev->dev.parent;
2426         if (parent && parent->driver == &cxgb4_driver.driver)
2427                 t4_l2t_update(dev_get_drvdata(parent), neigh);
2428 }
2429
2430 static int netevent_cb(struct notifier_block *nb, unsigned long event,
2431                        void *data)
2432 {
2433         switch (event) {
2434         case NETEVENT_NEIGH_UPDATE:
2435                 check_neigh_update(data);
2436                 break;
2437         case NETEVENT_REDIRECT:
2438         default:
2439                 break;
2440         }
2441         return 0;
2442 }
2443
2444 static bool netevent_registered;
2445 static struct notifier_block cxgb4_netevent_nb = {
2446         .notifier_call = netevent_cb
2447 };
2448
2449 static void uld_attach(struct adapter *adap, unsigned int uld)
2450 {
2451         void *handle;
2452         struct cxgb4_lld_info lli;
2453
2454         lli.pdev = adap->pdev;
2455         lli.l2t = adap->l2t;
2456         lli.tids = &adap->tids;
2457         lli.ports = adap->port;
2458         lli.vr = &adap->vres;
2459         lli.mtus = adap->params.mtus;
2460         if (uld == CXGB4_ULD_RDMA) {
2461                 lli.rxq_ids = adap->sge.rdma_rxq;
2462                 lli.nrxq = adap->sge.rdmaqs;
2463         } else if (uld == CXGB4_ULD_ISCSI) {
2464                 lli.rxq_ids = adap->sge.ofld_rxq;
2465                 lli.nrxq = adap->sge.ofldqsets;
2466         }
2467         lli.ntxq = adap->sge.ofldqsets;
2468         lli.nchan = adap->params.nports;
2469         lli.nports = adap->params.nports;
2470         lli.wr_cred = adap->params.ofldq_wr_cred;
2471         lli.adapter_type = adap->params.rev;
2472         lli.iscsi_iolen = MAXRXDATA_GET(t4_read_reg(adap, TP_PARA_REG2));
2473         lli.udb_density = 1 << QUEUESPERPAGEPF0_GET(
2474                         t4_read_reg(adap, SGE_EGRESS_QUEUES_PER_PAGE_PF) >>
2475                         (adap->fn * 4));
2476         lli.ucq_density = 1 << QUEUESPERPAGEPF0_GET(
2477                         t4_read_reg(adap, SGE_INGRESS_QUEUES_PER_PAGE_PF) >>
2478                         (adap->fn * 4));
2479         lli.gts_reg = adap->regs + MYPF_REG(SGE_PF_GTS);
2480         lli.db_reg = adap->regs + MYPF_REG(SGE_PF_KDOORBELL);
2481         lli.fw_vers = adap->params.fw_vers;
2482
2483         handle = ulds[uld].add(&lli);
2484         if (IS_ERR(handle)) {
2485                 dev_warn(adap->pdev_dev,
2486                          "could not attach to the %s driver, error %ld\n",
2487                          uld_str[uld], PTR_ERR(handle));
2488                 return;
2489         }
2490
2491         adap->uld_handle[uld] = handle;
2492
2493         if (!netevent_registered) {
2494                 register_netevent_notifier(&cxgb4_netevent_nb);
2495                 netevent_registered = true;
2496         }
2497
2498         if (adap->flags & FULL_INIT_DONE)
2499                 ulds[uld].state_change(handle, CXGB4_STATE_UP);
2500 }
2501
2502 static void attach_ulds(struct adapter *adap)
2503 {
2504         unsigned int i;
2505
2506         mutex_lock(&uld_mutex);
2507         list_add_tail(&adap->list_node, &adapter_list);
2508         for (i = 0; i < CXGB4_ULD_MAX; i++)
2509                 if (ulds[i].add)
2510                         uld_attach(adap, i);
2511         mutex_unlock(&uld_mutex);
2512 }
2513
2514 static void detach_ulds(struct adapter *adap)
2515 {
2516         unsigned int i;
2517
2518         mutex_lock(&uld_mutex);
2519         list_del(&adap->list_node);
2520         for (i = 0; i < CXGB4_ULD_MAX; i++)
2521                 if (adap->uld_handle[i]) {
2522                         ulds[i].state_change(adap->uld_handle[i],
2523                                              CXGB4_STATE_DETACH);
2524                         adap->uld_handle[i] = NULL;
2525                 }
2526         if (netevent_registered && list_empty(&adapter_list)) {
2527                 unregister_netevent_notifier(&cxgb4_netevent_nb);
2528                 netevent_registered = false;
2529         }
2530         mutex_unlock(&uld_mutex);
2531 }
2532
2533 static void notify_ulds(struct adapter *adap, enum cxgb4_state new_state)
2534 {
2535         unsigned int i;
2536
2537         mutex_lock(&uld_mutex);
2538         for (i = 0; i < CXGB4_ULD_MAX; i++)
2539                 if (adap->uld_handle[i])
2540                         ulds[i].state_change(adap->uld_handle[i], new_state);
2541         mutex_unlock(&uld_mutex);
2542 }
2543
2544 /**
2545  *      cxgb4_register_uld - register an upper-layer driver
2546  *      @type: the ULD type
2547  *      @p: the ULD methods
2548  *
2549  *      Registers an upper-layer driver with this driver and notifies the ULD
2550  *      about any presently available devices that support its type.  Returns
2551  *      %-EBUSY if a ULD of the same type is already registered.
2552  */
2553 int cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p)
2554 {
2555         int ret = 0;
2556         struct adapter *adap;
2557
2558         if (type >= CXGB4_ULD_MAX)
2559                 return -EINVAL;
2560         mutex_lock(&uld_mutex);
2561         if (ulds[type].add) {
2562                 ret = -EBUSY;
2563                 goto out;
2564         }
2565         ulds[type] = *p;
2566         list_for_each_entry(adap, &adapter_list, list_node)
2567                 uld_attach(adap, type);
2568 out:    mutex_unlock(&uld_mutex);
2569         return ret;
2570 }
2571 EXPORT_SYMBOL(cxgb4_register_uld);
2572
2573 /**
2574  *      cxgb4_unregister_uld - unregister an upper-layer driver
2575  *      @type: the ULD type
2576  *
2577  *      Unregisters an existing upper-layer driver.
2578  */
2579 int cxgb4_unregister_uld(enum cxgb4_uld type)
2580 {
2581         struct adapter *adap;
2582
2583         if (type >= CXGB4_ULD_MAX)
2584                 return -EINVAL;
2585         mutex_lock(&uld_mutex);
2586         list_for_each_entry(adap, &adapter_list, list_node)
2587                 adap->uld_handle[type] = NULL;
2588         ulds[type].add = NULL;
2589         mutex_unlock(&uld_mutex);
2590         return 0;
2591 }
2592 EXPORT_SYMBOL(cxgb4_unregister_uld);
2593
2594 /**
2595  *      cxgb_up - enable the adapter
2596  *      @adap: adapter being enabled
2597  *
2598  *      Called when the first port is enabled, this function performs the
2599  *      actions necessary to make an adapter operational, such as completing
2600  *      the initialization of HW modules, and enabling interrupts.
2601  *
2602  *      Must be called with the rtnl lock held.
2603  */
2604 static int cxgb_up(struct adapter *adap)
2605 {
2606         int err;
2607
2608         err = setup_sge_queues(adap);
2609         if (err)
2610                 goto out;
2611         err = setup_rss(adap);
2612         if (err)
2613                 goto freeq;
2614
2615         if (adap->flags & USING_MSIX) {
2616                 name_msix_vecs(adap);
2617                 err = request_irq(adap->msix_info[0].vec, t4_nondata_intr, 0,
2618                                   adap->msix_info[0].desc, adap);
2619                 if (err)
2620                         goto irq_err;
2621
2622                 err = request_msix_queue_irqs(adap);
2623                 if (err) {
2624                         free_irq(adap->msix_info[0].vec, adap);
2625                         goto irq_err;
2626                 }
2627         } else {
2628                 err = request_irq(adap->pdev->irq, t4_intr_handler(adap),
2629                                   (adap->flags & USING_MSI) ? 0 : IRQF_SHARED,
2630                                   adap->port[0]->name, adap);
2631                 if (err)
2632                         goto irq_err;
2633         }
2634         enable_rx(adap);
2635         t4_sge_start(adap);
2636         t4_intr_enable(adap);
2637         adap->flags |= FULL_INIT_DONE;
2638         notify_ulds(adap, CXGB4_STATE_UP);
2639  out:
2640         return err;
2641  irq_err:
2642         dev_err(adap->pdev_dev, "request_irq failed, err %d\n", err);
2643  freeq:
2644         t4_free_sge_resources(adap);
2645         goto out;
2646 }
2647
2648 static void cxgb_down(struct adapter *adapter)
2649 {
2650         t4_intr_disable(adapter);
2651         cancel_work_sync(&adapter->tid_release_task);
2652         adapter->tid_release_task_busy = false;
2653         adapter->tid_release_head = NULL;
2654
2655         if (adapter->flags & USING_MSIX) {
2656                 free_msix_queue_irqs(adapter);
2657                 free_irq(adapter->msix_info[0].vec, adapter);
2658         } else
2659                 free_irq(adapter->pdev->irq, adapter);
2660         quiesce_rx(adapter);
2661         t4_sge_stop(adapter);
2662         t4_free_sge_resources(adapter);
2663         adapter->flags &= ~FULL_INIT_DONE;
2664 }
2665
2666 /*
2667  * net_device operations
2668  */
2669 static int cxgb_open(struct net_device *dev)
2670 {
2671         int err;
2672         struct port_info *pi = netdev_priv(dev);
2673         struct adapter *adapter = pi->adapter;
2674
2675         netif_carrier_off(dev);
2676
2677         if (!(adapter->flags & FULL_INIT_DONE)) {
2678                 err = cxgb_up(adapter);
2679                 if (err < 0)
2680                         return err;
2681         }
2682
2683         err = link_start(dev);
2684         if (!err)
2685                 netif_tx_start_all_queues(dev);
2686         return err;
2687 }
2688
2689 static int cxgb_close(struct net_device *dev)
2690 {
2691         struct port_info *pi = netdev_priv(dev);
2692         struct adapter *adapter = pi->adapter;
2693
2694         netif_tx_stop_all_queues(dev);
2695         netif_carrier_off(dev);
2696         return t4_enable_vi(adapter, adapter->fn, pi->viid, false, false);
2697 }
2698
2699 static struct rtnl_link_stats64 *cxgb_get_stats(struct net_device *dev,
2700                                                 struct rtnl_link_stats64 *ns)
2701 {
2702         struct port_stats stats;
2703         struct port_info *p = netdev_priv(dev);
2704         struct adapter *adapter = p->adapter;
2705
2706         spin_lock(&adapter->stats_lock);
2707         t4_get_port_stats(adapter, p->tx_chan, &stats);
2708         spin_unlock(&adapter->stats_lock);
2709
2710         ns->tx_bytes   = stats.tx_octets;
2711         ns->tx_packets = stats.tx_frames;
2712         ns->rx_bytes   = stats.rx_octets;
2713         ns->rx_packets = stats.rx_frames;
2714         ns->multicast  = stats.rx_mcast_frames;
2715
2716         /* detailed rx_errors */
2717         ns->rx_length_errors = stats.rx_jabber + stats.rx_too_long +
2718                                stats.rx_runt;
2719         ns->rx_over_errors   = 0;
2720         ns->rx_crc_errors    = stats.rx_fcs_err;
2721         ns->rx_frame_errors  = stats.rx_symbol_err;
2722         ns->rx_fifo_errors   = stats.rx_ovflow0 + stats.rx_ovflow1 +
2723                                stats.rx_ovflow2 + stats.rx_ovflow3 +
2724                                stats.rx_trunc0 + stats.rx_trunc1 +
2725                                stats.rx_trunc2 + stats.rx_trunc3;
2726         ns->rx_missed_errors = 0;
2727
2728         /* detailed tx_errors */
2729         ns->tx_aborted_errors   = 0;
2730         ns->tx_carrier_errors   = 0;
2731         ns->tx_fifo_errors      = 0;
2732         ns->tx_heartbeat_errors = 0;
2733         ns->tx_window_errors    = 0;
2734
2735         ns->tx_errors = stats.tx_error_frames;
2736         ns->rx_errors = stats.rx_symbol_err + stats.rx_fcs_err +
2737                 ns->rx_length_errors + stats.rx_len_err + ns->rx_fifo_errors;
2738         return ns;
2739 }
2740
2741 static int cxgb_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
2742 {
2743         unsigned int mbox;
2744         int ret = 0, prtad, devad;
2745         struct port_info *pi = netdev_priv(dev);
2746         struct mii_ioctl_data *data = (struct mii_ioctl_data *)&req->ifr_data;
2747
2748         switch (cmd) {
2749         case SIOCGMIIPHY:
2750                 if (pi->mdio_addr < 0)
2751                         return -EOPNOTSUPP;
2752                 data->phy_id = pi->mdio_addr;
2753                 break;
2754         case SIOCGMIIREG:
2755         case SIOCSMIIREG:
2756                 if (mdio_phy_id_is_c45(data->phy_id)) {
2757                         prtad = mdio_phy_id_prtad(data->phy_id);
2758                         devad = mdio_phy_id_devad(data->phy_id);
2759                 } else if (data->phy_id < 32) {
2760                         prtad = data->phy_id;
2761                         devad = 0;
2762                         data->reg_num &= 0x1f;
2763                 } else
2764                         return -EINVAL;
2765
2766                 mbox = pi->adapter->fn;
2767                 if (cmd == SIOCGMIIREG)
2768                         ret = t4_mdio_rd(pi->adapter, mbox, prtad, devad,
2769                                          data->reg_num, &data->val_out);
2770                 else
2771                         ret = t4_mdio_wr(pi->adapter, mbox, prtad, devad,
2772                                          data->reg_num, data->val_in);
2773                 break;
2774         default:
2775                 return -EOPNOTSUPP;
2776         }
2777         return ret;
2778 }
2779
2780 static void cxgb_set_rxmode(struct net_device *dev)
2781 {
2782         /* unfortunately we can't return errors to the stack */
2783         set_rxmode(dev, -1, false);
2784 }
2785
2786 static int cxgb_change_mtu(struct net_device *dev, int new_mtu)
2787 {
2788         int ret;
2789         struct port_info *pi = netdev_priv(dev);
2790
2791         if (new_mtu < 81 || new_mtu > MAX_MTU)         /* accommodate SACK */
2792                 return -EINVAL;
2793         ret = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, new_mtu, -1,
2794                             -1, -1, -1, true);
2795         if (!ret)
2796                 dev->mtu = new_mtu;
2797         return ret;
2798 }
2799
2800 static int cxgb_set_mac_addr(struct net_device *dev, void *p)
2801 {
2802         int ret;
2803         struct sockaddr *addr = p;
2804         struct port_info *pi = netdev_priv(dev);
2805
2806         if (!is_valid_ether_addr(addr->sa_data))
2807                 return -EADDRNOTAVAIL;
2808
2809         ret = t4_change_mac(pi->adapter, pi->adapter->fn, pi->viid,
2810                             pi->xact_addr_filt, addr->sa_data, true, true);
2811         if (ret < 0)
2812                 return ret;
2813
2814         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
2815         pi->xact_addr_filt = ret;
2816         return 0;
2817 }
2818
2819 #ifdef CONFIG_NET_POLL_CONTROLLER
2820 static void cxgb_netpoll(struct net_device *dev)
2821 {
2822         struct port_info *pi = netdev_priv(dev);
2823         struct adapter *adap = pi->adapter;
2824
2825         if (adap->flags & USING_MSIX) {
2826                 int i;
2827                 struct sge_eth_rxq *rx = &adap->sge.ethrxq[pi->first_qset];
2828
2829                 for (i = pi->nqsets; i; i--, rx++)
2830                         t4_sge_intr_msix(0, &rx->rspq);
2831         } else
2832                 t4_intr_handler(adap)(0, adap);
2833 }
2834 #endif
2835
2836 static const struct net_device_ops cxgb4_netdev_ops = {
2837         .ndo_open             = cxgb_open,
2838         .ndo_stop             = cxgb_close,
2839         .ndo_start_xmit       = t4_eth_xmit,
2840         .ndo_get_stats64      = cxgb_get_stats,
2841         .ndo_set_rx_mode      = cxgb_set_rxmode,
2842         .ndo_set_mac_address  = cxgb_set_mac_addr,
2843         .ndo_set_features     = cxgb_set_features,
2844         .ndo_validate_addr    = eth_validate_addr,
2845         .ndo_do_ioctl         = cxgb_ioctl,
2846         .ndo_change_mtu       = cxgb_change_mtu,
2847 #ifdef CONFIG_NET_POLL_CONTROLLER
2848         .ndo_poll_controller  = cxgb_netpoll,
2849 #endif
2850 };
2851
2852 void t4_fatal_err(struct adapter *adap)
2853 {
2854         t4_set_reg_field(adap, SGE_CONTROL, GLOBALENABLE, 0);
2855         t4_intr_disable(adap);
2856         dev_alert(adap->pdev_dev, "encountered fatal error, adapter stopped\n");
2857 }
2858
2859 static void setup_memwin(struct adapter *adap)
2860 {
2861         u32 bar0;
2862
2863         bar0 = pci_resource_start(adap->pdev, 0);  /* truncation intentional */
2864         t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 0),
2865                      (bar0 + MEMWIN0_BASE) | BIR(0) |
2866                      WINDOW(ilog2(MEMWIN0_APERTURE) - 10));
2867         t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 1),
2868                      (bar0 + MEMWIN1_BASE) | BIR(0) |
2869                      WINDOW(ilog2(MEMWIN1_APERTURE) - 10));
2870         t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 2),
2871                      (bar0 + MEMWIN2_BASE) | BIR(0) |
2872                      WINDOW(ilog2(MEMWIN2_APERTURE) - 10));
2873         if (adap->vres.ocq.size) {
2874                 unsigned int start, sz_kb;
2875
2876                 start = pci_resource_start(adap->pdev, 2) +
2877                         OCQ_WIN_OFFSET(adap->pdev, &adap->vres);
2878                 sz_kb = roundup_pow_of_two(adap->vres.ocq.size) >> 10;
2879                 t4_write_reg(adap,
2880                              PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 3),
2881                              start | BIR(1) | WINDOW(ilog2(sz_kb)));
2882                 t4_write_reg(adap,
2883                              PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, 3),
2884                              adap->vres.ocq.start);
2885                 t4_read_reg(adap,
2886                             PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, 3));
2887         }
2888 }
2889
2890 static int adap_init1(struct adapter *adap, struct fw_caps_config_cmd *c)
2891 {
2892         u32 v;
2893         int ret;
2894
2895         /* get device capabilities */
2896         memset(c, 0, sizeof(*c));
2897         c->op_to_write = htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
2898                                FW_CMD_REQUEST | FW_CMD_READ);
2899         c->retval_len16 = htonl(FW_LEN16(*c));
2900         ret = t4_wr_mbox(adap, adap->fn, c, sizeof(*c), c);
2901         if (ret < 0)
2902                 return ret;
2903
2904         /* select capabilities we'll be using */
2905         if (c->niccaps & htons(FW_CAPS_CONFIG_NIC_VM)) {
2906                 if (!vf_acls)
2907                         c->niccaps ^= htons(FW_CAPS_CONFIG_NIC_VM);
2908                 else
2909                         c->niccaps = htons(FW_CAPS_CONFIG_NIC_VM);
2910         } else if (vf_acls) {
2911                 dev_err(adap->pdev_dev, "virtualization ACLs not supported");
2912                 return ret;
2913         }
2914         c->op_to_write = htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
2915                                FW_CMD_REQUEST | FW_CMD_WRITE);
2916         ret = t4_wr_mbox(adap, adap->fn, c, sizeof(*c), NULL);
2917         if (ret < 0)
2918                 return ret;
2919
2920         ret = t4_config_glbl_rss(adap, adap->fn,
2921                                  FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL,
2922                                  FW_RSS_GLB_CONFIG_CMD_TNLMAPEN |
2923                                  FW_RSS_GLB_CONFIG_CMD_TNLALLLKP);
2924         if (ret < 0)
2925                 return ret;
2926
2927         ret = t4_cfg_pfvf(adap, adap->fn, adap->fn, 0, MAX_EGRQ, 64, MAX_INGQ,
2928                           0, 0, 4, 0xf, 0xf, 16, FW_CMD_CAP_PF, FW_CMD_CAP_PF);
2929         if (ret < 0)
2930                 return ret;
2931
2932         t4_sge_init(adap);
2933
2934         /* tweak some settings */
2935         t4_write_reg(adap, TP_SHIFT_CNT, 0x64f8849);
2936         t4_write_reg(adap, ULP_RX_TDDP_PSZ, HPZ0(PAGE_SHIFT - 12));
2937         t4_write_reg(adap, TP_PIO_ADDR, TP_INGRESS_CONFIG);
2938         v = t4_read_reg(adap, TP_PIO_DATA);
2939         t4_write_reg(adap, TP_PIO_DATA, v & ~CSUM_HAS_PSEUDO_HDR);
2940
2941         /* get basic stuff going */
2942         return t4_early_init(adap, adap->fn);
2943 }
2944
2945 /*
2946  * Max # of ATIDs.  The absolute HW max is 16K but we keep it lower.
2947  */
2948 #define MAX_ATIDS 8192U
2949
2950 /*
2951  * Phase 0 of initialization: contact FW, obtain config, perform basic init.
2952  */
2953 static int adap_init0(struct adapter *adap)
2954 {
2955         int ret;
2956         u32 v, port_vec;
2957         enum dev_state state;
2958         u32 params[7], val[7];
2959         struct fw_caps_config_cmd c;
2960
2961         ret = t4_check_fw_version(adap);
2962         if (ret == -EINVAL || ret > 0) {
2963                 if (upgrade_fw(adap) >= 0)             /* recache FW version */
2964                         ret = t4_check_fw_version(adap);
2965         }
2966         if (ret < 0)
2967                 return ret;
2968
2969         /* contact FW, request master */
2970         ret = t4_fw_hello(adap, adap->fn, adap->fn, MASTER_MUST, &state);
2971         if (ret < 0) {
2972                 dev_err(adap->pdev_dev, "could not connect to FW, error %d\n",
2973                         ret);
2974                 return ret;
2975         }
2976
2977         /* reset device */
2978         ret = t4_fw_reset(adap, adap->fn, PIORSTMODE | PIORST);
2979         if (ret < 0)
2980                 goto bye;
2981
2982         for (v = 0; v < SGE_NTIMERS - 1; v++)
2983                 adap->sge.timer_val[v] = min(intr_holdoff[v], MAX_SGE_TIMERVAL);
2984         adap->sge.timer_val[SGE_NTIMERS - 1] = MAX_SGE_TIMERVAL;
2985         adap->sge.counter_val[0] = 1;
2986         for (v = 1; v < SGE_NCOUNTERS; v++)
2987                 adap->sge.counter_val[v] = min(intr_cnt[v - 1],
2988                                                THRESHOLD_3_MASK);
2989 #define FW_PARAM_DEV(param) \
2990         (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | \
2991          FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_##param))
2992
2993         params[0] = FW_PARAM_DEV(CCLK);
2994         ret = t4_query_params(adap, adap->fn, adap->fn, 0, 1, params, val);
2995         if (ret < 0)
2996                 goto bye;
2997         adap->params.vpd.cclk = val[0];
2998
2999         ret = adap_init1(adap, &c);
3000         if (ret < 0)
3001                 goto bye;
3002
3003 #define FW_PARAM_PFVF(param) \
3004         (FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) | \
3005          FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_##param) | \
3006          FW_PARAMS_PARAM_Y(adap->fn))
3007
3008         params[0] = FW_PARAM_DEV(PORTVEC);
3009         params[1] = FW_PARAM_PFVF(L2T_START);
3010         params[2] = FW_PARAM_PFVF(L2T_END);
3011         params[3] = FW_PARAM_PFVF(FILTER_START);
3012         params[4] = FW_PARAM_PFVF(FILTER_END);
3013         params[5] = FW_PARAM_PFVF(IQFLINT_START);
3014         params[6] = FW_PARAM_PFVF(EQ_START);
3015         ret = t4_query_params(adap, adap->fn, adap->fn, 0, 7, params, val);
3016         if (ret < 0)
3017                 goto bye;
3018         port_vec = val[0];
3019         adap->tids.ftid_base = val[3];
3020         adap->tids.nftids = val[4] - val[3] + 1;
3021         adap->sge.ingr_start = val[5];
3022         adap->sge.egr_start = val[6];
3023
3024         if (c.ofldcaps) {
3025                 /* query offload-related parameters */
3026                 params[0] = FW_PARAM_DEV(NTID);
3027                 params[1] = FW_PARAM_PFVF(SERVER_START);
3028                 params[2] = FW_PARAM_PFVF(SERVER_END);
3029                 params[3] = FW_PARAM_PFVF(TDDP_START);
3030                 params[4] = FW_PARAM_PFVF(TDDP_END);
3031                 params[5] = FW_PARAM_DEV(FLOWC_BUFFIFO_SZ);
3032                 ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
3033                                       val);
3034                 if (ret < 0)
3035                         goto bye;
3036                 adap->tids.ntids = val[0];
3037                 adap->tids.natids = min(adap->tids.ntids / 2, MAX_ATIDS);
3038                 adap->tids.stid_base = val[1];
3039                 adap->tids.nstids = val[2] - val[1] + 1;
3040                 adap->vres.ddp.start = val[3];
3041                 adap->vres.ddp.size = val[4] - val[3] + 1;
3042                 adap->params.ofldq_wr_cred = val[5];
3043                 adap->params.offload = 1;
3044         }
3045         if (c.rdmacaps) {
3046                 params[0] = FW_PARAM_PFVF(STAG_START);
3047                 params[1] = FW_PARAM_PFVF(STAG_END);
3048                 params[2] = FW_PARAM_PFVF(RQ_START);
3049                 params[3] = FW_PARAM_PFVF(RQ_END);
3050                 params[4] = FW_PARAM_PFVF(PBL_START);
3051                 params[5] = FW_PARAM_PFVF(PBL_END);
3052                 ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
3053                                       val);
3054                 if (ret < 0)
3055                         goto bye;
3056                 adap->vres.stag.start = val[0];
3057                 adap->vres.stag.size = val[1] - val[0] + 1;
3058                 adap->vres.rq.start = val[2];
3059                 adap->vres.rq.size = val[3] - val[2] + 1;
3060                 adap->vres.pbl.start = val[4];
3061                 adap->vres.pbl.size = val[5] - val[4] + 1;
3062
3063                 params[0] = FW_PARAM_PFVF(SQRQ_START);
3064                 params[1] = FW_PARAM_PFVF(SQRQ_END);
3065                 params[2] = FW_PARAM_PFVF(CQ_START);
3066                 params[3] = FW_PARAM_PFVF(CQ_END);
3067                 params[4] = FW_PARAM_PFVF(OCQ_START);
3068                 params[5] = FW_PARAM_PFVF(OCQ_END);
3069                 ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
3070                                       val);
3071                 if (ret < 0)
3072                         goto bye;
3073                 adap->vres.qp.start = val[0];
3074                 adap->vres.qp.size = val[1] - val[0] + 1;
3075                 adap->vres.cq.start = val[2];
3076                 adap->vres.cq.size = val[3] - val[2] + 1;
3077                 adap->vres.ocq.start = val[4];
3078                 adap->vres.ocq.size = val[5] - val[4] + 1;
3079         }
3080         if (c.iscsicaps) {
3081                 params[0] = FW_PARAM_PFVF(ISCSI_START);
3082                 params[1] = FW_PARAM_PFVF(ISCSI_END);
3083                 ret = t4_query_params(adap, adap->fn, adap->fn, 0, 2, params,
3084                                       val);
3085                 if (ret < 0)
3086                         goto bye;
3087                 adap->vres.iscsi.start = val[0];
3088                 adap->vres.iscsi.size = val[1] - val[0] + 1;
3089         }
3090 #undef FW_PARAM_PFVF
3091 #undef FW_PARAM_DEV
3092
3093         adap->params.nports = hweight32(port_vec);
3094         adap->params.portvec = port_vec;
3095         adap->flags |= FW_OK;
3096
3097         /* These are finalized by FW initialization, load their values now */
3098         v = t4_read_reg(adap, TP_TIMER_RESOLUTION);
3099         adap->params.tp.tre = TIMERRESOLUTION_GET(v);
3100         t4_read_mtu_tbl(adap, adap->params.mtus, NULL);
3101         t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
3102                      adap->params.b_wnd);
3103
3104 #ifdef CONFIG_PCI_IOV
3105         /*
3106          * Provision resource limits for Virtual Functions.  We currently
3107          * grant them all the same static resource limits except for the Port
3108          * Access Rights Mask which we're assigning based on the PF.  All of
3109          * the static provisioning stuff for both the PF and VF really needs
3110          * to be managed in a persistent manner for each device which the
3111          * firmware controls.
3112          */
3113         {
3114                 int pf, vf;
3115
3116                 for (pf = 0; pf < ARRAY_SIZE(num_vf); pf++) {
3117                         if (num_vf[pf] <= 0)
3118                                 continue;
3119
3120                         /* VF numbering starts at 1! */
3121                         for (vf = 1; vf <= num_vf[pf]; vf++) {
3122                                 ret = t4_cfg_pfvf(adap, adap->fn, pf, vf,
3123                                                   VFRES_NEQ, VFRES_NETHCTRL,
3124                                                   VFRES_NIQFLINT, VFRES_NIQ,
3125                                                   VFRES_TC, VFRES_NVI,
3126                                                   FW_PFVF_CMD_CMASK_MASK,
3127                                                   pfvfres_pmask(adap, pf, vf),
3128                                                   VFRES_NEXACTF,
3129                                                   VFRES_R_CAPS, VFRES_WX_CAPS);
3130                                 if (ret < 0)
3131                                         dev_warn(adap->pdev_dev, "failed to "
3132                                                  "provision pf/vf=%d/%d; "
3133                                                  "err=%d\n", pf, vf, ret);
3134                         }
3135                 }
3136         }
3137 #endif
3138
3139         setup_memwin(adap);
3140         return 0;
3141
3142         /*
3143          * If a command timed out or failed with EIO FW does not operate within
3144          * its spec or something catastrophic happened to HW/FW, stop issuing
3145          * commands.
3146          */
3147 bye:    if (ret != -ETIMEDOUT && ret != -EIO)
3148                 t4_fw_bye(adap, adap->fn);
3149         return ret;
3150 }
3151
3152 /* EEH callbacks */
3153
3154 static pci_ers_result_t eeh_err_detected(struct pci_dev *pdev,
3155                                          pci_channel_state_t state)
3156 {
3157         int i;
3158         struct adapter *adap = pci_get_drvdata(pdev);
3159
3160         if (!adap)
3161                 goto out;
3162
3163         rtnl_lock();
3164         adap->flags &= ~FW_OK;
3165         notify_ulds(adap, CXGB4_STATE_START_RECOVERY);
3166         for_each_port(adap, i) {
3167                 struct net_device *dev = adap->port[i];
3168
3169                 netif_device_detach(dev);
3170                 netif_carrier_off(dev);
3171         }
3172         if (adap->flags & FULL_INIT_DONE)
3173                 cxgb_down(adap);
3174         rtnl_unlock();
3175         pci_disable_device(pdev);
3176 out:    return state == pci_channel_io_perm_failure ?
3177                 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
3178 }
3179
3180 static pci_ers_result_t eeh_slot_reset(struct pci_dev *pdev)
3181 {
3182         int i, ret;
3183         struct fw_caps_config_cmd c;
3184         struct adapter *adap = pci_get_drvdata(pdev);
3185
3186         if (!adap) {
3187                 pci_restore_state(pdev);
3188                 pci_save_state(pdev);
3189                 return PCI_ERS_RESULT_RECOVERED;
3190         }
3191
3192         if (pci_enable_device(pdev)) {
3193                 dev_err(&pdev->dev, "cannot reenable PCI device after reset\n");
3194                 return PCI_ERS_RESULT_DISCONNECT;
3195         }
3196
3197         pci_set_master(pdev);
3198         pci_restore_state(pdev);
3199         pci_save_state(pdev);
3200         pci_cleanup_aer_uncorrect_error_status(pdev);
3201
3202         if (t4_wait_dev_ready(adap) < 0)
3203                 return PCI_ERS_RESULT_DISCONNECT;
3204         if (t4_fw_hello(adap, adap->fn, adap->fn, MASTER_MUST, NULL))
3205                 return PCI_ERS_RESULT_DISCONNECT;
3206         adap->flags |= FW_OK;
3207         if (adap_init1(adap, &c))
3208                 return PCI_ERS_RESULT_DISCONNECT;
3209
3210         for_each_port(adap, i) {
3211                 struct port_info *p = adap2pinfo(adap, i);
3212
3213                 ret = t4_alloc_vi(adap, adap->fn, p->tx_chan, adap->fn, 0, 1,
3214                                   NULL, NULL);
3215                 if (ret < 0)
3216                         return PCI_ERS_RESULT_DISCONNECT;
3217                 p->viid = ret;
3218                 p->xact_addr_filt = -1;
3219         }
3220
3221         t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
3222                      adap->params.b_wnd);
3223         setup_memwin(adap);
3224         if (cxgb_up(adap))
3225                 return PCI_ERS_RESULT_DISCONNECT;
3226         return PCI_ERS_RESULT_RECOVERED;
3227 }
3228
3229 static void eeh_resume(struct pci_dev *pdev)
3230 {
3231         int i;
3232         struct adapter *adap = pci_get_drvdata(pdev);
3233
3234         if (!adap)
3235                 return;
3236
3237         rtnl_lock();
3238         for_each_port(adap, i) {
3239                 struct net_device *dev = adap->port[i];
3240
3241                 if (netif_running(dev)) {
3242                         link_start(dev);
3243                         cxgb_set_rxmode(dev);
3244                 }
3245                 netif_device_attach(dev);
3246         }
3247         rtnl_unlock();
3248 }
3249
3250 static struct pci_error_handlers cxgb4_eeh = {
3251         .error_detected = eeh_err_detected,
3252         .slot_reset     = eeh_slot_reset,
3253         .resume         = eeh_resume,
3254 };
3255
3256 static inline bool is_10g_port(const struct link_config *lc)
3257 {
3258         return (lc->supported & FW_PORT_CAP_SPEED_10G) != 0;
3259 }
3260
3261 static inline void init_rspq(struct sge_rspq *q, u8 timer_idx, u8 pkt_cnt_idx,
3262                              unsigned int size, unsigned int iqe_size)
3263 {
3264         q->intr_params = QINTR_TIMER_IDX(timer_idx) |
3265                          (pkt_cnt_idx < SGE_NCOUNTERS ? QINTR_CNT_EN : 0);
3266         q->pktcnt_idx = pkt_cnt_idx < SGE_NCOUNTERS ? pkt_cnt_idx : 0;
3267         q->iqe_len = iqe_size;
3268         q->size = size;
3269 }
3270
3271 /*
3272  * Perform default configuration of DMA queues depending on the number and type
3273  * of ports we found and the number of available CPUs.  Most settings can be
3274  * modified by the admin prior to actual use.
3275  */
3276 static void __devinit cfg_queues(struct adapter *adap)
3277 {
3278         struct sge *s = &adap->sge;
3279         int i, q10g = 0, n10g = 0, qidx = 0;
3280
3281         for_each_port(adap, i)
3282                 n10g += is_10g_port(&adap2pinfo(adap, i)->link_cfg);
3283
3284         /*
3285          * We default to 1 queue per non-10G port and up to # of cores queues
3286          * per 10G port.
3287          */
3288         if (n10g)
3289                 q10g = (MAX_ETH_QSETS - (adap->params.nports - n10g)) / n10g;
3290         if (q10g > num_online_cpus())
3291                 q10g = num_online_cpus();
3292
3293         for_each_port(adap, i) {
3294                 struct port_info *pi = adap2pinfo(adap, i);
3295
3296                 pi->first_qset = qidx;
3297                 pi->nqsets = is_10g_port(&pi->link_cfg) ? q10g : 1;
3298                 qidx += pi->nqsets;
3299         }
3300
3301         s->ethqsets = qidx;
3302         s->max_ethqsets = qidx;   /* MSI-X may lower it later */
3303
3304         if (is_offload(adap)) {
3305                 /*
3306                  * For offload we use 1 queue/channel if all ports are up to 1G,
3307                  * otherwise we divide all available queues amongst the channels
3308                  * capped by the number of available cores.
3309                  */
3310                 if (n10g) {
3311                         i = min_t(int, ARRAY_SIZE(s->ofldrxq),
3312                                   num_online_cpus());
3313                         s->ofldqsets = roundup(i, adap->params.nports);
3314                 } else
3315                         s->ofldqsets = adap->params.nports;
3316                 /* For RDMA one Rx queue per channel suffices */
3317                 s->rdmaqs = adap->params.nports;
3318         }
3319
3320         for (i = 0; i < ARRAY_SIZE(s->ethrxq); i++) {
3321                 struct sge_eth_rxq *r = &s->ethrxq[i];
3322
3323                 init_rspq(&r->rspq, 0, 0, 1024, 64);
3324                 r->fl.size = 72;
3325         }
3326
3327         for (i = 0; i < ARRAY_SIZE(s->ethtxq); i++)
3328                 s->ethtxq[i].q.size = 1024;
3329
3330         for (i = 0; i < ARRAY_SIZE(s->ctrlq); i++)
3331                 s->ctrlq[i].q.size = 512;
3332
3333         for (i = 0; i < ARRAY_SIZE(s->ofldtxq); i++)
3334                 s->ofldtxq[i].q.size = 1024;
3335
3336         for (i = 0; i < ARRAY_SIZE(s->ofldrxq); i++) {
3337                 struct sge_ofld_rxq *r = &s->ofldrxq[i];
3338
3339                 init_rspq(&r->rspq, 0, 0, 1024, 64);
3340                 r->rspq.uld = CXGB4_ULD_ISCSI;
3341                 r->fl.size = 72;
3342         }
3343
3344         for (i = 0; i < ARRAY_SIZE(s->rdmarxq); i++) {
3345                 struct sge_ofld_rxq *r = &s->rdmarxq[i];
3346
3347                 init_rspq(&r->rspq, 0, 0, 511, 64);
3348                 r->rspq.uld = CXGB4_ULD_RDMA;
3349                 r->fl.size = 72;
3350         }
3351
3352         init_rspq(&s->fw_evtq, 6, 0, 512, 64);
3353         init_rspq(&s->intrq, 6, 0, 2 * MAX_INGQ, 64);
3354 }
3355
3356 /*
3357  * Reduce the number of Ethernet queues across all ports to at most n.
3358  * n provides at least one queue per port.
3359  */
3360 static void __devinit reduce_ethqs(struct adapter *adap, int n)
3361 {
3362         int i;
3363         struct port_info *pi;
3364
3365         while (n < adap->sge.ethqsets)
3366                 for_each_port(adap, i) {
3367                         pi = adap2pinfo(adap, i);
3368                         if (pi->nqsets > 1) {
3369                                 pi->nqsets--;
3370                                 adap->sge.ethqsets--;
3371                                 if (adap->sge.ethqsets <= n)
3372                                         break;
3373                         }
3374                 }
3375
3376         n = 0;
3377         for_each_port(adap, i) {
3378                 pi = adap2pinfo(adap, i);
3379                 pi->first_qset = n;
3380                 n += pi->nqsets;
3381         }
3382 }
3383
3384 /* 2 MSI-X vectors needed for the FW queue and non-data interrupts */
3385 #define EXTRA_VECS 2
3386
3387 static int __devinit enable_msix(struct adapter *adap)
3388 {
3389         int ofld_need = 0;
3390         int i, err, want, need;
3391         struct sge *s = &adap->sge;
3392         unsigned int nchan = adap->params.nports;
3393         struct msix_entry entries[MAX_INGQ + 1];
3394
3395         for (i = 0; i < ARRAY_SIZE(entries); ++i)
3396                 entries[i].entry = i;
3397
3398         want = s->max_ethqsets + EXTRA_VECS;
3399         if (is_offload(adap)) {
3400                 want += s->rdmaqs + s->ofldqsets;
3401                 /* need nchan for each possible ULD */
3402                 ofld_need = 2 * nchan;
3403         }
3404         need = adap->params.nports + EXTRA_VECS + ofld_need;
3405
3406         while ((err = pci_enable_msix(adap->pdev, entries, want)) >= need)
3407                 want = err;
3408
3409         if (!err) {
3410                 /*
3411                  * Distribute available vectors to the various queue groups.
3412                  * Every group gets its minimum requirement and NIC gets top
3413                  * priority for leftovers.
3414                  */
3415                 i = want - EXTRA_VECS - ofld_need;
3416                 if (i < s->max_ethqsets) {
3417                         s->max_ethqsets = i;
3418                         if (i < s->ethqsets)
3419                                 reduce_ethqs(adap, i);
3420                 }
3421                 if (is_offload(adap)) {
3422                         i = want - EXTRA_VECS - s->max_ethqsets;
3423                         i -= ofld_need - nchan;
3424                         s->ofldqsets = (i / nchan) * nchan;  /* round down */
3425                 }
3426                 for (i = 0; i < want; ++i)
3427                         adap->msix_info[i].vec = entries[i].vector;
3428         } else if (err > 0)
3429                 dev_info(adap->pdev_dev,
3430                          "only %d MSI-X vectors left, not using MSI-X\n", err);
3431         return err;
3432 }
3433
3434 #undef EXTRA_VECS
3435
3436 static int __devinit init_rss(struct adapter *adap)
3437 {
3438         unsigned int i, j;
3439
3440         for_each_port(adap, i) {
3441                 struct port_info *pi = adap2pinfo(adap, i);
3442
3443                 pi->rss = kcalloc(pi->rss_size, sizeof(u16), GFP_KERNEL);
3444                 if (!pi->rss)
3445                         return -ENOMEM;
3446                 for (j = 0; j < pi->rss_size; j++)
3447                         pi->rss[j] = ethtool_rxfh_indir_default(j, pi->nqsets);
3448         }
3449         return 0;
3450 }
3451
3452 static void __devinit print_port_info(const struct net_device *dev)
3453 {
3454         static const char *base[] = {
3455                 "R XFI", "R XAUI", "T SGMII", "T XFI", "T XAUI", "KX4", "CX4",
3456                 "KX", "KR", "R SFP+", "KR/KX", "KR/KX/KX4"
3457         };
3458
3459         char buf[80];
3460         char *bufp = buf;
3461         const char *spd = "";
3462         const struct port_info *pi = netdev_priv(dev);
3463         const struct adapter *adap = pi->adapter;
3464
3465         if (adap->params.pci.speed == PCI_EXP_LNKSTA_CLS_2_5GB)
3466                 spd = " 2.5 GT/s";
3467         else if (adap->params.pci.speed == PCI_EXP_LNKSTA_CLS_5_0GB)
3468                 spd = " 5 GT/s";
3469
3470         if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_100M)
3471                 bufp += sprintf(bufp, "100/");
3472         if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_1G)
3473                 bufp += sprintf(bufp, "1000/");
3474         if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_10G)
3475                 bufp += sprintf(bufp, "10G/");
3476         if (bufp != buf)
3477                 --bufp;
3478         sprintf(bufp, "BASE-%s", base[pi->port_type]);
3479
3480         netdev_info(dev, "Chelsio %s rev %d %s %sNIC PCIe x%d%s%s\n",
3481                     adap->params.vpd.id, adap->params.rev, buf,
3482                     is_offload(adap) ? "R" : "", adap->params.pci.width, spd,
3483                     (adap->flags & USING_MSIX) ? " MSI-X" :
3484                     (adap->flags & USING_MSI) ? " MSI" : "");
3485         netdev_info(dev, "S/N: %s, E/C: %s\n",
3486                     adap->params.vpd.sn, adap->params.vpd.ec);
3487 }
3488
3489 static void __devinit enable_pcie_relaxed_ordering(struct pci_dev *dev)
3490 {
3491         u16 v;
3492         int pos;
3493
3494         pos = pci_pcie_cap(dev);
3495         if (pos > 0) {
3496                 pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &v);
3497                 v |= PCI_EXP_DEVCTL_RELAX_EN;
3498                 pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, v);
3499         }
3500 }
3501
3502 /*
3503  * Free the following resources:
3504  * - memory used for tables
3505  * - MSI/MSI-X
3506  * - net devices
3507  * - resources FW is holding for us
3508  */
3509 static void free_some_resources(struct adapter *adapter)
3510 {
3511         unsigned int i;
3512
3513         t4_free_mem(adapter->l2t);
3514         t4_free_mem(adapter->tids.tid_tab);
3515         disable_msi(adapter);
3516
3517         for_each_port(adapter, i)
3518                 if (adapter->port[i]) {
3519                         kfree(adap2pinfo(adapter, i)->rss);
3520                         free_netdev(adapter->port[i]);
3521                 }
3522         if (adapter->flags & FW_OK)
3523                 t4_fw_bye(adapter, adapter->fn);
3524 }
3525
3526 #define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
3527 #define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \
3528                    NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA)
3529
3530 static int __devinit init_one(struct pci_dev *pdev,
3531                               const struct pci_device_id *ent)
3532 {
3533         int func, i, err;
3534         struct port_info *pi;
3535         bool highdma = false;
3536         struct adapter *adapter = NULL;
3537
3538         printk_once(KERN_INFO "%s - version %s\n", DRV_DESC, DRV_VERSION);
3539
3540         err = pci_request_regions(pdev, KBUILD_MODNAME);
3541         if (err) {
3542                 /* Just info, some other driver may have claimed the device. */
3543                 dev_info(&pdev->dev, "cannot obtain PCI resources\n");
3544                 return err;
3545         }
3546
3547         /* We control everything through one PF */
3548         func = PCI_FUNC(pdev->devfn);
3549         if (func != ent->driver_data) {
3550                 pci_save_state(pdev);        /* to restore SR-IOV later */
3551                 goto sriov;
3552         }
3553
3554         err = pci_enable_device(pdev);
3555         if (err) {
3556                 dev_err(&pdev->dev, "cannot enable PCI device\n");
3557                 goto out_release_regions;
3558         }
3559
3560         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
3561                 highdma = true;
3562                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3563                 if (err) {
3564                         dev_err(&pdev->dev, "unable to obtain 64-bit DMA for "
3565                                 "coherent allocations\n");
3566                         goto out_disable_device;
3567                 }
3568         } else {
3569                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3570                 if (err) {
3571                         dev_err(&pdev->dev, "no usable DMA configuration\n");
3572                         goto out_disable_device;
3573                 }
3574         }
3575
3576         pci_enable_pcie_error_reporting(pdev);
3577         enable_pcie_relaxed_ordering(pdev);
3578         pci_set_master(pdev);
3579         pci_save_state(pdev);
3580
3581         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3582         if (!adapter) {
3583                 err = -ENOMEM;
3584                 goto out_disable_device;
3585         }
3586
3587         adapter->regs = pci_ioremap_bar(pdev, 0);
3588         if (!adapter->regs) {
3589                 dev_err(&pdev->dev, "cannot map device registers\n");
3590                 err = -ENOMEM;
3591                 goto out_free_adapter;
3592         }
3593
3594         adapter->pdev = pdev;
3595         adapter->pdev_dev = &pdev->dev;
3596         adapter->fn = func;
3597         adapter->msg_enable = dflt_msg_enable;
3598         memset(adapter->chan_map, 0xff, sizeof(adapter->chan_map));
3599
3600         spin_lock_init(&adapter->stats_lock);
3601         spin_lock_init(&adapter->tid_release_lock);
3602
3603         INIT_WORK(&adapter->tid_release_task, process_tid_release_list);
3604
3605         err = t4_prep_adapter(adapter);
3606         if (err)
3607                 goto out_unmap_bar;
3608         err = adap_init0(adapter);
3609         if (err)
3610                 goto out_unmap_bar;
3611
3612         for_each_port(adapter, i) {
3613                 struct net_device *netdev;
3614
3615                 netdev = alloc_etherdev_mq(sizeof(struct port_info),
3616                                            MAX_ETH_QSETS);
3617                 if (!netdev) {
3618                         err = -ENOMEM;
3619                         goto out_free_dev;
3620                 }
3621
3622                 SET_NETDEV_DEV(netdev, &pdev->dev);
3623
3624                 adapter->port[i] = netdev;
3625                 pi = netdev_priv(netdev);
3626                 pi->adapter = adapter;
3627                 pi->xact_addr_filt = -1;
3628                 pi->port_id = i;
3629                 netdev->irq = pdev->irq;
3630
3631                 netdev->hw_features = NETIF_F_SG | TSO_FLAGS |
3632                         NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3633                         NETIF_F_RXCSUM | NETIF_F_RXHASH |
3634                         NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3635                 if (highdma)
3636                         netdev->hw_features |= NETIF_F_HIGHDMA;
3637                 netdev->features |= netdev->hw_features;
3638                 netdev->vlan_features = netdev->features & VLAN_FEAT;
3639
3640                 netdev->priv_flags |= IFF_UNICAST_FLT;
3641
3642                 netdev->netdev_ops = &cxgb4_netdev_ops;
3643                 SET_ETHTOOL_OPS(netdev, &cxgb_ethtool_ops);
3644         }
3645
3646         pci_set_drvdata(pdev, adapter);
3647
3648         if (adapter->flags & FW_OK) {
3649                 err = t4_port_init(adapter, func, func, 0);
3650                 if (err)
3651                         goto out_free_dev;
3652         }
3653
3654         /*
3655          * Configure queues and allocate tables now, they can be needed as
3656          * soon as the first register_netdev completes.
3657          */
3658         cfg_queues(adapter);
3659
3660         adapter->l2t = t4_init_l2t();
3661         if (!adapter->l2t) {
3662                 /* We tolerate a lack of L2T, giving up some functionality */
3663                 dev_warn(&pdev->dev, "could not allocate L2T, continuing\n");
3664                 adapter->params.offload = 0;
3665         }
3666
3667         if (is_offload(adapter) && tid_init(&adapter->tids) < 0) {
3668                 dev_warn(&pdev->dev, "could not allocate TID table, "
3669                          "continuing\n");
3670                 adapter->params.offload = 0;
3671         }
3672
3673         /* See what interrupts we'll be using */
3674         if (msi > 1 && enable_msix(adapter) == 0)
3675                 adapter->flags |= USING_MSIX;
3676         else if (msi > 0 && pci_enable_msi(pdev) == 0)
3677                 adapter->flags |= USING_MSI;
3678
3679         err = init_rss(adapter);
3680         if (err)
3681                 goto out_free_dev;
3682
3683         /*
3684          * The card is now ready to go.  If any errors occur during device
3685          * registration we do not fail the whole card but rather proceed only
3686          * with the ports we manage to register successfully.  However we must
3687          * register at least one net device.
3688          */
3689         for_each_port(adapter, i) {
3690                 pi = adap2pinfo(adapter, i);
3691                 netif_set_real_num_tx_queues(adapter->port[i], pi->nqsets);
3692                 netif_set_real_num_rx_queues(adapter->port[i], pi->nqsets);
3693
3694                 err = register_netdev(adapter->port[i]);
3695                 if (err)
3696                         break;
3697                 adapter->chan_map[pi->tx_chan] = i;
3698                 print_port_info(adapter->port[i]);
3699         }
3700         if (i == 0) {
3701                 dev_err(&pdev->dev, "could not register any net devices\n");
3702                 goto out_free_dev;
3703         }
3704         if (err) {
3705                 dev_warn(&pdev->dev, "only %d net devices registered\n", i);
3706                 err = 0;
3707         }
3708
3709         if (cxgb4_debugfs_root) {
3710                 adapter->debugfs_root = debugfs_create_dir(pci_name(pdev),
3711                                                            cxgb4_debugfs_root);
3712                 setup_debugfs(adapter);
3713         }
3714
3715         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
3716         pdev->needs_freset = 1;
3717
3718         if (is_offload(adapter))
3719                 attach_ulds(adapter);
3720
3721 sriov:
3722 #ifdef CONFIG_PCI_IOV
3723         if (func < ARRAY_SIZE(num_vf) && num_vf[func] > 0)
3724                 if (pci_enable_sriov(pdev, num_vf[func]) == 0)
3725                         dev_info(&pdev->dev,
3726                                  "instantiated %u virtual functions\n",
3727                                  num_vf[func]);
3728 #endif
3729         return 0;
3730
3731  out_free_dev:
3732         free_some_resources(adapter);
3733  out_unmap_bar:
3734         iounmap(adapter->regs);
3735  out_free_adapter:
3736         kfree(adapter);
3737  out_disable_device:
3738         pci_disable_pcie_error_reporting(pdev);
3739         pci_disable_device(pdev);
3740  out_release_regions:
3741         pci_release_regions(pdev);
3742         pci_set_drvdata(pdev, NULL);
3743         return err;
3744 }
3745
3746 static void __devexit remove_one(struct pci_dev *pdev)
3747 {
3748         struct adapter *adapter = pci_get_drvdata(pdev);
3749
3750         pci_disable_sriov(pdev);
3751
3752         if (adapter) {
3753                 int i;
3754
3755                 if (is_offload(adapter))
3756                         detach_ulds(adapter);
3757
3758                 for_each_port(adapter, i)
3759                         if (adapter->port[i]->reg_state == NETREG_REGISTERED)
3760                                 unregister_netdev(adapter->port[i]);
3761
3762                 if (adapter->debugfs_root)
3763                         debugfs_remove_recursive(adapter->debugfs_root);
3764
3765                 if (adapter->flags & FULL_INIT_DONE)
3766                         cxgb_down(adapter);
3767
3768                 free_some_resources(adapter);
3769                 iounmap(adapter->regs);
3770                 kfree(adapter);
3771                 pci_disable_pcie_error_reporting(pdev);
3772                 pci_disable_device(pdev);
3773                 pci_release_regions(pdev);
3774                 pci_set_drvdata(pdev, NULL);
3775         } else
3776                 pci_release_regions(pdev);
3777 }
3778
3779 static struct pci_driver cxgb4_driver = {
3780         .name     = KBUILD_MODNAME,
3781         .id_table = cxgb4_pci_tbl,
3782         .probe    = init_one,
3783         .remove   = __devexit_p(remove_one),
3784         .err_handler = &cxgb4_eeh,
3785 };
3786
3787 static int __init cxgb4_init_module(void)
3788 {
3789         int ret;
3790
3791         /* Debugfs support is optional, just warn if this fails */
3792         cxgb4_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
3793         if (!cxgb4_debugfs_root)
3794                 pr_warning("could not create debugfs entry, continuing\n");
3795
3796         ret = pci_register_driver(&cxgb4_driver);
3797         if (ret < 0)
3798                 debugfs_remove(cxgb4_debugfs_root);
3799         return ret;
3800 }
3801
3802 static void __exit cxgb4_cleanup_module(void)
3803 {
3804         pci_unregister_driver(&cxgb4_driver);
3805         debugfs_remove(cxgb4_debugfs_root);  /* NULL ok */
3806 }
3807
3808 module_init(cxgb4_init_module);
3809 module_exit(cxgb4_cleanup_module);