sys/dev/qlxge/qls_os.c

   1 /*
   2  * Copyright (c) 2013-2014 Qlogic Corporation
   3  * All rights reserved.
   4  *
   5  *  Redistribution and use in source and binary forms, with or without
   6  *  modification, are permitted provided that the following conditions
   7  *  are met:
   8  *
   9  *  1. Redistributions of source code must retain the above copyright
  10  *     notice, this list of conditions and the following disclaimer.
  11  *  2. Redistributions in binary form must reproduce the above copyright
  12  *     notice, this list of conditions and the following disclaimer in the
  13  *     documentation and/or other materials provided with the distribution.
  14  *
  15  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  16  *  and ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  19  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  20  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  21  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  24  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  25  *  POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * File: qls_os.c
  30  * Author : David C Somayajulu, Qlogic Corporation, Aliso Viejo, CA 92656.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD$");
  35
  36
  37 #include "qls_os.h"
  38 #include "qls_hw.h"
  39 #include "qls_def.h"
  40 #include "qls_inline.h"
  41 #include "qls_ver.h"
  42 #include "qls_glbl.h"
  43 #include "qls_dbg.h"
  44 #include <sys/smp.h>
  45
  46 /*
  47  * Some PCI Configuration Space Related Defines
  48  */
  49
  50 #ifndef PCI_VENDOR_QLOGIC
  51 #define PCI_VENDOR_QLOGIC       0x1077
  52 #endif
  53
  54 #ifndef PCI_DEVICE_QLOGIC_8000
  55 #define PCI_DEVICE_QLOGIC_8000  0x8000
  56 #endif
  57
  58 #define PCI_QLOGIC_DEV8000 \
  59         ((PCI_DEVICE_QLOGIC_8000 << 16) | PCI_VENDOR_QLOGIC)
  60
  61 /*
  62  * static functions
  63  */
  64 static int qls_alloc_parent_dma_tag(qla_host_t *ha);
  65 static void qls_free_parent_dma_tag(qla_host_t *ha);
  66
  67 static void qls_flush_xmt_bufs(qla_host_t *ha);
  68
  69 static int qls_alloc_rcv_bufs(qla_host_t *ha);
  70 static void qls_free_rcv_bufs(qla_host_t *ha);
  71
  72 static void qls_init_ifnet(device_t dev, qla_host_t *ha);
  73 static void qls_release(qla_host_t *ha);
  74 static void qls_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs,
  75                 int error);
  76 static void qls_stop(qla_host_t *ha);
  77 static int qls_send(qla_host_t *ha, struct mbuf **m_headp);
  78 static void qls_tx_done(void *context, int pending);
  79
  80 static int qls_config_lro(qla_host_t *ha);
  81 static void qls_free_lro(qla_host_t *ha);
  82
  83 static void qls_error_recovery(void *context, int pending);
  84
  85 /*
  86  * Hooks to the Operating Systems
  87  */
  88 static int qls_pci_probe (device_t);
  89 static int qls_pci_attach (device_t);
  90 static int qls_pci_detach (device_t);
  91
  92 static void qls_start(struct ifnet *ifp);
  93 static void qls_init(void *arg);
  94 static int qls_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
  95 static int qls_media_change(struct ifnet *ifp);
  96 static void qls_media_status(struct ifnet *ifp, struct ifmediareq *ifmr);
  97
  98 static device_method_t qla_pci_methods[] = {
  99         /* Device interface */
 100         DEVMETHOD(device_probe, qls_pci_probe),
 101         DEVMETHOD(device_attach, qls_pci_attach),
 102         DEVMETHOD(device_detach, qls_pci_detach),
 103         { 0, 0 }
 104 };
 105
 106 static driver_t qla_pci_driver = {
 107         "ql", qla_pci_methods, sizeof (qla_host_t),
 108 };
 109
 110 static devclass_t qla8000_devclass;
 111
 112 DRIVER_MODULE(qla8000, pci, qla_pci_driver, qla8000_devclass, 0, 0);
 113
 114 MODULE_DEPEND(qla8000, pci, 1, 1, 1);
 115 MODULE_DEPEND(qla8000, ether, 1, 1, 1);
 116
 117 MALLOC_DEFINE(M_QLA8000BUF, "qla8000buf", "Buffers for qla8000 driver");
 118
 119 static char dev_str[64];
 120 static char ver_str[64];
 121
 122 /*
 123  * Name:        qls_pci_probe
 124  * Function:    Validate the PCI device to be a QLA80XX device
 125  */
 126 static int
 127 qls_pci_probe(device_t dev)
 128 {
 129         switch ((pci_get_device(dev) << 16) | (pci_get_vendor(dev))) {
 130         case PCI_QLOGIC_DEV8000:
 131                 snprintf(dev_str, sizeof(dev_str), "%s v%d.%d.%d",
 132                         "Qlogic ISP 8000 PCI CNA Adapter-Ethernet Function",
 133                         QLA_VERSION_MAJOR, QLA_VERSION_MINOR,
 134                         QLA_VERSION_BUILD);
 135                 snprintf(ver_str, sizeof(ver_str), "v%d.%d.%d",
 136                         QLA_VERSION_MAJOR, QLA_VERSION_MINOR,
 137                         QLA_VERSION_BUILD);
 138                 device_set_desc(dev, dev_str);
 139                 break;
 140         default:
 141                 return (ENXIO);
 142         }
 143
 144         if (bootverbose)
 145                 printf("%s: %s\n ", __func__, dev_str);
 146
 147         return (BUS_PROBE_DEFAULT);
 148 }
 149
 150 static int
 151 qls_sysctl_get_drvr_stats(SYSCTL_HANDLER_ARGS)
 152 {
 153         int err = 0, ret;
 154         qla_host_t *ha;
 155         uint32_t i;
 156
 157         err = sysctl_handle_int(oidp, &ret, 0, req);
 158
 159         if (err || !req->newptr)
 160                 return (err);
 161
 162         if (ret == 1) {
 163
 164                 ha = (qla_host_t *)arg1;
 165
 166                 for (i = 0; i < ha->num_tx_rings; i++) {
 167
 168                         device_printf(ha->pci_dev,
 169                                 "%s: tx_ring[%d].tx_frames= %p\n",
 170                                 __func__, i,
 171                                 (void *)ha->tx_ring[i].tx_frames);
 172
 173                         device_printf(ha->pci_dev,
 174                                 "%s: tx_ring[%d].tx_tso_frames= %p\n",
 175                                 __func__, i,
 176                                 (void *)ha->tx_ring[i].tx_tso_frames);
 177
 178                         device_printf(ha->pci_dev,
 179                                 "%s: tx_ring[%d].tx_vlan_frames= %p\n",
 180                                 __func__, i,
 181                                 (void *)ha->tx_ring[i].tx_vlan_frames);
 182
 183                         device_printf(ha->pci_dev,
 184                                 "%s: tx_ring[%d].txr_free= 0x%08x\n",
 185                                 __func__, i,
 186                                 ha->tx_ring[i].txr_free);
 187
 188                         device_printf(ha->pci_dev,
 189                                 "%s: tx_ring[%d].txr_next= 0x%08x\n",
 190                                 __func__, i,
 191                                 ha->tx_ring[i].txr_next);
 192
 193                         device_printf(ha->pci_dev,
 194                                 "%s: tx_ring[%d].txr_done= 0x%08x\n",
 195                                 __func__, i,
 196                                 ha->tx_ring[i].txr_done);
 197
 198                         device_printf(ha->pci_dev,
 199                                 "%s: tx_ring[%d].txr_cons_idx= 0x%08x\n",
 200                                 __func__, i,
 201                                 *(ha->tx_ring[i].txr_cons_vaddr));
 202                 }
 203
 204                 for (i = 0; i < ha->num_rx_rings; i++) {
 205
 206                         device_printf(ha->pci_dev,
 207                                 "%s: rx_ring[%d].rx_int= %p\n",
 208                                 __func__, i,
 209                                 (void *)ha->rx_ring[i].rx_int);
 210
 211                         device_printf(ha->pci_dev,
 212                                 "%s: rx_ring[%d].rss_int= %p\n",
 213                                 __func__, i,
 214                                 (void *)ha->rx_ring[i].rss_int);
 215
 216                         device_printf(ha->pci_dev,
 217                                 "%s: rx_ring[%d].lbq_next= 0x%08x\n",
 218                                 __func__, i,
 219                                 ha->rx_ring[i].lbq_next);
 220
 221                         device_printf(ha->pci_dev,
 222                                 "%s: rx_ring[%d].lbq_free= 0x%08x\n",
 223                                 __func__, i,
 224                                 ha->rx_ring[i].lbq_free);
 225
 226                         device_printf(ha->pci_dev,
 227                                 "%s: rx_ring[%d].lbq_in= 0x%08x\n",
 228                                 __func__, i,
 229                                 ha->rx_ring[i].lbq_in);
 230
 231                         device_printf(ha->pci_dev,
 232                                 "%s: rx_ring[%d].sbq_next= 0x%08x\n",
 233                                 __func__, i,
 234                                 ha->rx_ring[i].sbq_next);
 235
 236                         device_printf(ha->pci_dev,
 237                                 "%s: rx_ring[%d].sbq_free= 0x%08x\n",
 238                                 __func__, i,
 239                                 ha->rx_ring[i].sbq_free);
 240
 241                         device_printf(ha->pci_dev,
 242                                 "%s: rx_ring[%d].sbq_in= 0x%08x\n",
 243                                 __func__, i,
 244                                 ha->rx_ring[i].sbq_in);
 245                 }
 246
 247                 device_printf(ha->pci_dev, "%s: err_m_getcl = 0x%08x\n",
 248                                 __func__, ha->err_m_getcl);
 249                 device_printf(ha->pci_dev, "%s: err_m_getjcl = 0x%08x\n",
 250                                 __func__, ha->err_m_getjcl);
 251                 device_printf(ha->pci_dev,
 252                                 "%s: err_tx_dmamap_create = 0x%08x\n",
 253                                 __func__, ha->err_tx_dmamap_create);
 254                 device_printf(ha->pci_dev,
 255                                 "%s: err_tx_dmamap_load = 0x%08x\n",
 256                                 __func__, ha->err_tx_dmamap_load);
 257                 device_printf(ha->pci_dev,
 258                                 "%s: err_tx_defrag = 0x%08x\n",
 259                                 __func__, ha->err_tx_defrag);
 260         }
 261         return (err);
 262 }
 263
 264 static void
 265 qls_add_sysctls(qla_host_t *ha)
 266 {
 267         device_t dev = ha->pci_dev;
 268
 269         SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
 270                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 271                 OID_AUTO, "version", CTLFLAG_RD,
 272                 ver_str, 0, "Driver Version");
 273
 274         qls_dbg_level = 0;
 275         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 276                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 277                 OID_AUTO, "debug", CTLFLAG_RW,
 278                 &qls_dbg_level, qls_dbg_level, "Debug Level");
 279
 280         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 281                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 282                 OID_AUTO, "drvr_stats", CTLTYPE_INT | CTLFLAG_RW,
 283                 (void *)ha, 0,
 284                 qls_sysctl_get_drvr_stats, "I", "Driver Maintained Statistics");
 285
 286         return;
 287 }
 288
 289 static void
 290 qls_watchdog(void *arg)
 291 {
 292         qla_host_t *ha = arg;
 293         struct ifnet *ifp;
 294
 295         ifp = ha->ifp;
 296
 297         if (ha->flags.qla_watchdog_exit) {
 298                 ha->qla_watchdog_exited = 1;
 299                 return;
 300         }
 301         ha->qla_watchdog_exited = 0;
 302
 303         if (!ha->flags.qla_watchdog_pause) {
 304
 305                 if (ha->qla_initiate_recovery) {
 306
 307                         ha->qla_watchdog_paused = 1;
 308                         ha->qla_initiate_recovery = 0;
 309                         ha->err_inject = 0;
 310                         taskqueue_enqueue(ha->err_tq, &ha->err_task);
 311
 312                 } else if ((ifp->if_snd.ifq_head != NULL) && QL_RUNNING(ifp)) {
 313
 314                         taskqueue_enqueue(ha->tx_tq, &ha->tx_task);
 315                 }
 316
 317                 ha->qla_watchdog_paused = 0;
 318         } else {
 319                 ha->qla_watchdog_paused = 1;
 320         }
 321
 322         ha->watchdog_ticks = ha->watchdog_ticks++ % 1000;
 323         callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
 324                 qls_watchdog, ha);
 325
 326         return;
 327 }
 328
 329 /*
 330  * Name:        qls_pci_attach
 331  * Function:    attaches the device to the operating system
 332  */
 333 static int
 334 qls_pci_attach(device_t dev)
 335 {
 336         qla_host_t *ha = NULL;
 337         int i;
 338
 339         QL_DPRINT2((dev, "%s: enter\n", __func__));
 340
 341         if ((ha = device_get_softc(dev)) == NULL) {
 342                 device_printf(dev, "cannot get softc\n");
 343                 return (ENOMEM);
 344         }
 345
 346         memset(ha, 0, sizeof (qla_host_t));
 347
 348         if (pci_get_device(dev) != PCI_DEVICE_QLOGIC_8000) {
 349                 device_printf(dev, "device is not QLE8000\n");
 350                 return (ENXIO);
 351         }
 352
 353         ha->pci_func = pci_get_function(dev);
 354
 355         ha->pci_dev = dev;
 356
 357         pci_enable_busmaster(dev);
 358
 359         ha->reg_rid = PCIR_BAR(1);
 360         ha->pci_reg = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ha->reg_rid,
 361                                 RF_ACTIVE);
 362
 363         if (ha->pci_reg == NULL) {
 364                 device_printf(dev, "unable to map any ports\n");
 365                 goto qls_pci_attach_err;
 366         }
 367
 368         ha->reg_rid1 = PCIR_BAR(3);
 369         ha->pci_reg1 = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 370                         &ha->reg_rid1, RF_ACTIVE);
 371
 372         if (ha->pci_reg1 == NULL) {
 373                 device_printf(dev, "unable to map any ports\n");
 374                 goto qls_pci_attach_err;
 375         }
 376
 377         mtx_init(&ha->hw_lock, "qla80xx_hw_lock", MTX_NETWORK_LOCK, MTX_DEF);
 378         mtx_init(&ha->tx_lock, "qla80xx_tx_lock", MTX_NETWORK_LOCK, MTX_DEF);
 379
 380         qls_add_sysctls(ha);
 381         qls_hw_add_sysctls(ha);
 382
 383         ha->flags.lock_init = 1;
 384
 385         ha->msix_count = pci_msix_count(dev);
 386
 387         if (ha->msix_count < qls_get_msix_count(ha)) {
 388                 device_printf(dev, "%s: msix_count[%d] not enough\n", __func__,
 389                         ha->msix_count);
 390                 goto qls_pci_attach_err;
 391         }
 392
 393         ha->msix_count = qls_get_msix_count(ha);
 394
 395         device_printf(dev, "\n%s: ha %p pci_func 0x%x  msix_count 0x%x"
 396                 " pci_reg %p pci_reg1 %p\n", __func__, ha,
 397                 ha->pci_func, ha->msix_count, ha->pci_reg, ha->pci_reg1);
 398
 399         if (pci_alloc_msix(dev, &ha->msix_count)) {
 400                 device_printf(dev, "%s: pci_alloc_msi[%d] failed\n", __func__,
 401                         ha->msix_count);
 402                 ha->msix_count = 0;
 403                 goto qls_pci_attach_err;
 404         }
 405
 406         for (i = 0; i < ha->num_rx_rings; i++) {
 407                 ha->irq_vec[i].cq_idx = i;
 408                 ha->irq_vec[i].ha = ha;
 409                 ha->irq_vec[i].irq_rid = 1 + i;
 410
 411                 ha->irq_vec[i].irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 412                                 &ha->irq_vec[i].irq_rid,
 413                                 (RF_ACTIVE | RF_SHAREABLE));
 414
 415                 if (ha->irq_vec[i].irq == NULL) {
 416                         device_printf(dev, "could not allocate interrupt\n");
 417                         goto qls_pci_attach_err;
 418                 }
 419
 420                 if (bus_setup_intr(dev, ha->irq_vec[i].irq,
 421                         (INTR_TYPE_NET | INTR_MPSAFE), NULL, qls_isr,
 422                         &ha->irq_vec[i], &ha->irq_vec[i].handle)) {
 423                                 device_printf(dev,
 424                                         "could not setup interrupt\n");
 425                         goto qls_pci_attach_err;
 426                 }
 427         }
 428
 429         qls_rd_nic_params(ha);
 430
 431         /* allocate parent dma tag */
 432         if (qls_alloc_parent_dma_tag(ha)) {
 433                 device_printf(dev, "%s: qls_alloc_parent_dma_tag failed\n",
 434                         __func__);
 435                 goto qls_pci_attach_err;
 436         }
 437
 438         /* alloc all dma buffers */
 439         if (qls_alloc_dma(ha)) {
 440                 device_printf(dev, "%s: qls_alloc_dma failed\n", __func__);
 441                 goto qls_pci_attach_err;
 442         }
 443
 444         /* create the o.s ethernet interface */
 445         qls_init_ifnet(dev, ha);
 446
 447         ha->flags.qla_watchdog_active = 1;
 448         ha->flags.qla_watchdog_pause = 1;
 449
 450         TASK_INIT(&ha->tx_task, 0, qls_tx_done, ha);
 451         ha->tx_tq = taskqueue_create_fast("qla_txq", M_NOWAIT,
 452                         taskqueue_thread_enqueue, &ha->tx_tq);
 453         taskqueue_start_threads(&ha->tx_tq, 1, PI_NET, "%s txq",
 454                 device_get_nameunit(ha->pci_dev));
 455
 456         callout_init(&ha->tx_callout, TRUE);
 457         ha->flags.qla_callout_init = 1;
 458
 459         /* create ioctl device interface */
 460         if (qls_make_cdev(ha)) {
 461                 device_printf(dev, "%s: qls_make_cdev failed\n", __func__);
 462                 goto qls_pci_attach_err;
 463         }
 464
 465         callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
 466                 qls_watchdog, ha);
 467
 468         TASK_INIT(&ha->err_task, 0, qls_error_recovery, ha);
 469         ha->err_tq = taskqueue_create_fast("qla_errq", M_NOWAIT,
 470                         taskqueue_thread_enqueue, &ha->err_tq);
 471         taskqueue_start_threads(&ha->err_tq, 1, PI_NET, "%s errq",
 472                 device_get_nameunit(ha->pci_dev));
 473
 474         QL_DPRINT2((dev, "%s: exit 0\n", __func__));
 475         return (0);
 476
 477 qls_pci_attach_err:
 478
 479         qls_release(ha);
 480
 481         QL_DPRINT2((dev, "%s: exit ENXIO\n", __func__));
 482         return (ENXIO);
 483 }
 484
 485 /*
 486  * Name:        qls_pci_detach
 487  * Function:    Unhooks the device from the operating system
 488  */
 489 static int
 490 qls_pci_detach(device_t dev)
 491 {
 492         qla_host_t *ha = NULL;
 493         struct ifnet *ifp;
 494
 495         QL_DPRINT2((dev, "%s: enter\n", __func__));
 496
 497         if ((ha = device_get_softc(dev)) == NULL) {
 498                 device_printf(dev, "cannot get softc\n");
 499                 return (ENOMEM);
 500         }
 501
 502         ifp = ha->ifp;
 503
 504         (void)QLA_LOCK(ha, __func__, 0);
 505         qls_stop(ha);
 506         QLA_UNLOCK(ha, __func__);
 507
 508         qls_release(ha);
 509
 510         QL_DPRINT2((dev, "%s: exit\n", __func__));
 511
 512         return (0);
 513 }
 514
 515 /*
 516  * Name:        qls_release
 517  * Function:    Releases the resources allocated for the device
 518  */
 519 static void
 520 qls_release(qla_host_t *ha)
 521 {
 522         device_t dev;
 523         int i;
 524
 525         dev = ha->pci_dev;
 526
 527         if (ha->err_tq) {
 528                 taskqueue_drain(ha->err_tq, &ha->err_task);
 529                 taskqueue_free(ha->err_tq);
 530         }
 531
 532         if (ha->tx_tq) {
 533                 taskqueue_drain(ha->tx_tq, &ha->tx_task);
 534                 taskqueue_free(ha->tx_tq);
 535         }
 536
 537         qls_del_cdev(ha);
 538
 539         if (ha->flags.qla_watchdog_active) {
 540                 ha->flags.qla_watchdog_exit = 1;
 541
 542                 while (ha->qla_watchdog_exited == 0)
 543                         qls_mdelay(__func__, 1);
 544         }
 545
 546         if (ha->flags.qla_callout_init)
 547                 callout_stop(&ha->tx_callout);
 548
 549         if (ha->ifp != NULL)
 550                 ether_ifdetach(ha->ifp);
 551
 552         qls_free_dma(ha);
 553         qls_free_parent_dma_tag(ha);
 554
 555         for (i = 0; i < ha->num_rx_rings; i++) {
 556
 557                 if (ha->irq_vec[i].handle) {
 558                         (void)bus_teardown_intr(dev, ha->irq_vec[i].irq,
 559                                         ha->irq_vec[i].handle);
 560                 }
 561
 562                 if (ha->irq_vec[i].irq) {
 563                         (void)bus_release_resource(dev, SYS_RES_IRQ,
 564                                 ha->irq_vec[i].irq_rid,
 565                                 ha->irq_vec[i].irq);
 566                 }
 567         }
 568
 569         if (ha->msix_count)
 570                 pci_release_msi(dev);
 571
 572         if (ha->flags.lock_init) {
 573                 mtx_destroy(&ha->tx_lock);
 574                 mtx_destroy(&ha->hw_lock);
 575         }
 576
 577         if (ha->pci_reg)
 578                 (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid,
 579                                 ha->pci_reg);
 580
 581         if (ha->pci_reg1)
 582                 (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid1,
 583                                 ha->pci_reg1);
 584 }
 585
 586 /*
 587  * DMA Related Functions
 588  */
 589
 590 static void
 591 qls_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
 592 {
 593         *((bus_addr_t *)arg) = 0;
 594
 595         if (error) {
 596                 printf("%s: bus_dmamap_load failed (%d)\n", __func__, error);
 597                 return;
 598         }
 599
 600         *((bus_addr_t *)arg) = segs[0].ds_addr;
 601
 602         return;
 603 }
 604
 605 int
 606 qls_alloc_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
 607 {
 608         int             ret = 0;
 609         device_t        dev;
 610         bus_addr_t      b_addr;
 611
 612         dev = ha->pci_dev;
 613
 614         QL_DPRINT2((dev, "%s: enter\n", __func__));
 615
 616         ret = bus_dma_tag_create(
 617                         ha->parent_tag,/* parent */
 618                         dma_buf->alignment,
 619                         ((bus_size_t)(1ULL << 32)),/* boundary */
 620                         BUS_SPACE_MAXADDR,      /* lowaddr */
 621                         BUS_SPACE_MAXADDR,      /* highaddr */
 622                         NULL, NULL,             /* filter, filterarg */
 623                         dma_buf->size,          /* maxsize */
 624                         1,                      /* nsegments */
 625                         dma_buf->size,          /* maxsegsize */
 626                         0,                      /* flags */
 627                         NULL, NULL,             /* lockfunc, lockarg */
 628                         &dma_buf->dma_tag);
 629
 630         if (ret) {
 631                 device_printf(dev, "%s: could not create dma tag\n", __func__);
 632                 goto qls_alloc_dmabuf_exit;
 633         }
 634         ret = bus_dmamem_alloc(dma_buf->dma_tag,
 635                         (void **)&dma_buf->dma_b,
 636                         (BUS_DMA_ZERO | BUS_DMA_COHERENT | BUS_DMA_NOWAIT),
 637                         &dma_buf->dma_map);
 638         if (ret) {
 639                 bus_dma_tag_destroy(dma_buf->dma_tag);
 640                 device_printf(dev, "%s: bus_dmamem_alloc failed\n", __func__);
 641                 goto qls_alloc_dmabuf_exit;
 642         }
 643
 644         ret = bus_dmamap_load(dma_buf->dma_tag,
 645                         dma_buf->dma_map,
 646                         dma_buf->dma_b,
 647                         dma_buf->size,
 648                         qls_dmamap_callback,
 649                         &b_addr, BUS_DMA_NOWAIT);
 650
 651         if (ret || !b_addr) {
 652                 bus_dma_tag_destroy(dma_buf->dma_tag);
 653                 bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b,
 654                         dma_buf->dma_map);
 655                 ret = -1;
 656                 goto qls_alloc_dmabuf_exit;
 657         }
 658
 659         dma_buf->dma_addr = b_addr;
 660
 661 qls_alloc_dmabuf_exit:
 662         QL_DPRINT2((dev, "%s: exit ret 0x%08x tag %p map %p b %p sz 0x%x\n",
 663                 __func__, ret, (void *)dma_buf->dma_tag,
 664                 (void *)dma_buf->dma_map, (void *)dma_buf->dma_b,
 665                 dma_buf->size));
 666
 667         return ret;
 668 }
 669
 670 void
 671 qls_free_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
 672 {
 673         bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b, dma_buf->dma_map);
 674         bus_dma_tag_destroy(dma_buf->dma_tag);
 675 }
 676
 677 static int
 678 qls_alloc_parent_dma_tag(qla_host_t *ha)
 679 {
 680         int             ret;
 681         device_t        dev;
 682
 683         dev = ha->pci_dev;
 684
 685         /*
 686          * Allocate parent DMA Tag
 687          */
 688         ret = bus_dma_tag_create(
 689                         bus_get_dma_tag(dev),   /* parent */
 690                         1,((bus_size_t)(1ULL << 32)),/* alignment, boundary */
 691                         BUS_SPACE_MAXADDR,      /* lowaddr */
 692                         BUS_SPACE_MAXADDR,      /* highaddr */
 693                         NULL, NULL,             /* filter, filterarg */
 694                         BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
 695                         0,                      /* nsegments */
 696                         BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
 697                         0,                      /* flags */
 698                         NULL, NULL,             /* lockfunc, lockarg */
 699                         &ha->parent_tag);
 700
 701         if (ret) {
 702                 device_printf(dev, "%s: could not create parent dma tag\n",
 703                         __func__);
 704                 return (-1);
 705         }
 706
 707         ha->flags.parent_tag = 1;
 708
 709         return (0);
 710 }
 711
 712 static void
 713 qls_free_parent_dma_tag(qla_host_t *ha)
 714 {
 715         if (ha->flags.parent_tag) {
 716                 bus_dma_tag_destroy(ha->parent_tag);
 717                 ha->flags.parent_tag = 0;
 718         }
 719 }
 720
 721 /*
 722  * Name: qls_init_ifnet
 723  * Function: Creates the Network Device Interface and Registers it with the O.S
 724  */
 725
 726 static void
 727 qls_init_ifnet(device_t dev, qla_host_t *ha)
 728 {
 729         struct ifnet *ifp;
 730
 731         QL_DPRINT2((dev, "%s: enter\n", __func__));
 732
 733         ifp = ha->ifp = if_alloc(IFT_ETHER);
 734
 735         if (ifp == NULL)
 736                 panic("%s: cannot if_alloc()\n", device_get_nameunit(dev));
 737
 738         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 739         ifp->if_baudrate = IF_Gbps(10);
 740         ifp->if_init = qls_init;
 741         ifp->if_softc = ha;
 742         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 743         ifp->if_ioctl = qls_ioctl;
 744         ifp->if_start = qls_start;
 745
 746         IFQ_SET_MAXLEN(&ifp->if_snd, qls_get_ifq_snd_maxlen(ha));
 747         ifp->if_snd.ifq_drv_maxlen = qls_get_ifq_snd_maxlen(ha);
 748         IFQ_SET_READY(&ifp->if_snd);
 749
 750         ha->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
 751         if (ha->max_frame_size <= MCLBYTES) {
 752                 ha->msize = MCLBYTES;
 753         } else if (ha->max_frame_size <= MJUMPAGESIZE) {
 754                 ha->msize = MJUMPAGESIZE;
 755         } else
 756                 ha->msize = MJUM9BYTES;
 757
 758         ether_ifattach(ifp, qls_get_mac_addr(ha));
 759
 760         ifp->if_capabilities = IFCAP_JUMBO_MTU;
 761
 762         ifp->if_capabilities |= IFCAP_HWCSUM;
 763         ifp->if_capabilities |= IFCAP_VLAN_MTU;
 764
 765         ifp->if_capabilities |= IFCAP_TSO4;
 766         ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING;
 767         ifp->if_capabilities |= IFCAP_VLAN_HWTSO;
 768         ifp->if_capabilities |= IFCAP_LINKSTATE;
 769
 770         ifp->if_capenable = ifp->if_capabilities;
 771
 772         ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
 773
 774         ifmedia_init(&ha->media, IFM_IMASK, qls_media_change, qls_media_status);
 775
 776         ifmedia_add(&ha->media, (IFM_ETHER | qls_get_optics(ha) | IFM_FDX), 0,
 777                 NULL);
 778         ifmedia_add(&ha->media, (IFM_ETHER | IFM_AUTO), 0, NULL);
 779
 780         ifmedia_set(&ha->media, (IFM_ETHER | IFM_AUTO));
 781
 782         QL_DPRINT2((dev, "%s: exit\n", __func__));
 783
 784         return;
 785 }
 786
 787 static void
 788 qls_init_locked(qla_host_t *ha)
 789 {
 790         struct ifnet *ifp = ha->ifp;
 791
 792         qls_stop(ha);
 793
 794         qls_flush_xmt_bufs(ha);
 795
 796         if (qls_alloc_rcv_bufs(ha) != 0)
 797                 return;
 798
 799         if (qls_config_lro(ha))
 800                 return;
 801
 802         bcopy(IF_LLADDR(ha->ifp), ha->mac_addr, ETHER_ADDR_LEN);
 803
 804         ifp->if_hwassist = CSUM_IP;
 805         ifp->if_hwassist |= CSUM_TCP;
 806         ifp->if_hwassist |= CSUM_UDP;
 807         ifp->if_hwassist |= CSUM_TSO;
 808
 809         if (qls_init_hw_if(ha) == 0) {
 810                 ifp = ha->ifp;
 811                 ifp->if_drv_flags |= IFF_DRV_RUNNING;
 812                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 813                 ha->flags.qla_watchdog_pause = 0;
 814         }
 815
 816         return;
 817 }
 818
 819 static void
 820 qls_init(void *arg)
 821 {
 822         qla_host_t *ha;
 823
 824         ha = (qla_host_t *)arg;
 825
 826         QL_DPRINT2((ha->pci_dev, "%s: enter\n", __func__));
 827
 828         (void)QLA_LOCK(ha, __func__, 0);
 829         qls_init_locked(ha);
 830         QLA_UNLOCK(ha, __func__);
 831
 832         QL_DPRINT2((ha->pci_dev, "%s: exit\n", __func__));
 833 }
 834
 835 static void
 836 qls_set_multi(qla_host_t *ha, uint32_t add_multi)
 837 {
 838         uint8_t mta[Q8_MAX_NUM_MULTICAST_ADDRS * Q8_MAC_ADDR_LEN];
 839         struct ifmultiaddr *ifma;
 840         int mcnt = 0;
 841         struct ifnet *ifp = ha->ifp;
 842
 843         if_maddr_rlock(ifp);
 844
 845         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
 846
 847                 if (ifma->ifma_addr->sa_family != AF_LINK)
 848                         continue;
 849
 850                 if (mcnt == Q8_MAX_NUM_MULTICAST_ADDRS)
 851                         break;
 852
 853                 bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
 854                         &mta[mcnt * Q8_MAC_ADDR_LEN], Q8_MAC_ADDR_LEN);
 855
 856                 mcnt++;
 857         }
 858
 859         if_maddr_runlock(ifp);
 860
 861         if (QLA_LOCK(ha, __func__, 1) == 0) {
 862                 qls_hw_set_multi(ha, mta, mcnt, add_multi);
 863                 QLA_UNLOCK(ha, __func__);
 864         }
 865
 866         return;
 867 }
 868
 869 static int
 870 qls_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 871 {
 872         int ret = 0;
 873         struct ifreq *ifr = (struct ifreq *)data;
 874         struct ifaddr *ifa = (struct ifaddr *)data;
 875         qla_host_t *ha;
 876
 877         ha = (qla_host_t *)ifp->if_softc;
 878
 879         switch (cmd) {
 880         case SIOCSIFADDR:
 881                 QL_DPRINT4((ha->pci_dev, "%s: SIOCSIFADDR (0x%lx)\n",
 882                         __func__, cmd));
 883
 884                 if (ifa->ifa_addr->sa_family == AF_INET) {
 885                         ifp->if_flags |= IFF_UP;
 886                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 887                                 (void)QLA_LOCK(ha, __func__, 0);
 888                                 qls_init_locked(ha);
 889                                 QLA_UNLOCK(ha, __func__);
 890                         }
 891                         QL_DPRINT4((ha->pci_dev,
 892                                 "%s: SIOCSIFADDR (0x%lx) ipv4 [0x%08x]\n",
 893                                 __func__, cmd,
 894                                 ntohl(IA_SIN(ifa)->sin_addr.s_addr)));
 895
 896                         arp_ifinit(ifp, ifa);
 897                 } else {
 898                         ether_ioctl(ifp, cmd, data);
 899                 }
 900                 break;
 901
 902         case SIOCSIFMTU:
 903                 QL_DPRINT4((ha->pci_dev, "%s: SIOCSIFMTU (0x%lx)\n",
 904                         __func__, cmd));
 905
 906                 if (ifr->ifr_mtu > QLA_MAX_MTU) {
 907                         ret = EINVAL;
 908                 } else {
 909                         (void) QLA_LOCK(ha, __func__, 0);
 910
 911                         ifp->if_mtu = ifr->ifr_mtu;
 912                         ha->max_frame_size =
 913                                 ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
 914
 915                         QLA_UNLOCK(ha, __func__);
 916
 917                         if (ret)
 918                                 ret = EINVAL;
 919                 }
 920
 921                 break;
 922
 923         case SIOCSIFFLAGS:
 924                 QL_DPRINT4((ha->pci_dev, "%s: SIOCSIFFLAGS (0x%lx)\n",
 925                         __func__, cmd));
 926
 927                 (void)QLA_LOCK(ha, __func__, 0);
 928
 929                 if (ifp->if_flags & IFF_UP) {
 930                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 931                                 if ((ifp->if_flags ^ ha->if_flags) &
 932                                         IFF_PROMISC) {
 933                                         ret = qls_set_promisc(ha);
 934                                 } else if ((ifp->if_flags ^ ha->if_flags) &
 935                                         IFF_ALLMULTI) {
 936                                         ret = qls_set_allmulti(ha);
 937                                 }
 938                         } else {
 939                                 ha->max_frame_size = ifp->if_mtu +
 940                                         ETHER_HDR_LEN + ETHER_CRC_LEN;
 941                                 qls_init_locked(ha);
 942                         }
 943                 } else {
 944                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 945                                 qls_stop(ha);
 946                         ha->if_flags = ifp->if_flags;
 947                 }
 948
 949                 QLA_UNLOCK(ha, __func__);
 950                 break;
 951
 952         case SIOCADDMULTI:
 953                 QL_DPRINT4((ha->pci_dev,
 954                         "%s: %s (0x%lx)\n", __func__, "SIOCADDMULTI", cmd));
 955
 956                 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 957                         qls_set_multi(ha, 1);
 958                 }
 959                 break;
 960
 961         case SIOCDELMULTI:
 962                 QL_DPRINT4((ha->pci_dev,
 963                         "%s: %s (0x%lx)\n", __func__, "SIOCDELMULTI", cmd));
 964
 965                 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 966                         qls_set_multi(ha, 0);
 967                 }
 968                 break;
 969
 970         case SIOCSIFMEDIA:
 971         case SIOCGIFMEDIA:
 972                 QL_DPRINT4((ha->pci_dev,
 973                         "%s: SIOCSIFMEDIA/SIOCGIFMEDIA (0x%lx)\n",
 974                         __func__, cmd));
 975                 ret = ifmedia_ioctl(ifp, ifr, &ha->media, cmd);
 976                 break;
 977
 978         case SIOCSIFCAP:
 979         {
 980                 int mask = ifr->ifr_reqcap ^ ifp->if_capenable;
 981
 982                 QL_DPRINT4((ha->pci_dev, "%s: SIOCSIFCAP (0x%lx)\n",
 983                         __func__, cmd));
 984
 985                 if (mask & IFCAP_HWCSUM)
 986                         ifp->if_capenable ^= IFCAP_HWCSUM;
 987                 if (mask & IFCAP_TSO4)
 988                         ifp->if_capenable ^= IFCAP_TSO4;
 989                 if (mask & IFCAP_VLAN_HWTAGGING)
 990                         ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
 991                 if (mask & IFCAP_VLAN_HWTSO)
 992                         ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
 993
 994                 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
 995                         qls_init(ha);
 996
 997                 VLAN_CAPABILITIES(ifp);
 998                 break;
 999         }
1000
1001         default:
1002                 QL_DPRINT4((ha->pci_dev, "%s: default (0x%lx)\n",
1003                         __func__, cmd));
1004                 ret = ether_ioctl(ifp, cmd, data);
1005                 break;
1006         }
1007
1008         return (ret);
1009 }
1010
1011 static int
1012 qls_media_change(struct ifnet *ifp)
1013 {
1014         qla_host_t *ha;
1015         struct ifmedia *ifm;
1016         int ret = 0;
1017
1018         ha = (qla_host_t *)ifp->if_softc;
1019
1020         QL_DPRINT2((ha->pci_dev, "%s: enter\n", __func__));
1021
1022         ifm = &ha->media;
1023
1024         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1025                 ret = EINVAL;
1026
1027         QL_DPRINT2((ha->pci_dev, "%s: exit\n", __func__));
1028
1029         return (ret);
1030 }
1031
1032 static void
1033 qls_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
1034 {
1035         qla_host_t *ha;
1036
1037         ha = (qla_host_t *)ifp->if_softc;
1038
1039         QL_DPRINT2((ha->pci_dev, "%s: enter\n", __func__));
1040
1041         ifmr->ifm_status = IFM_AVALID;
1042         ifmr->ifm_active = IFM_ETHER;
1043
1044         qls_update_link_state(ha);
1045         if (ha->link_up) {
1046                 ifmr->ifm_status |= IFM_ACTIVE;
1047                 ifmr->ifm_active |= (IFM_FDX | qls_get_optics(ha));
1048         }
1049
1050         QL_DPRINT2((ha->pci_dev, "%s: exit (%s)\n", __func__,\
1051                 (ha->link_up ? "link_up" : "link_down")));
1052
1053         return;
1054 }
1055
1056 static void
1057 qls_start(struct ifnet *ifp)
1058 {
1059         int             i, ret = 0;
1060         struct mbuf     *m_head;
1061         qla_host_t      *ha = (qla_host_t *)ifp->if_softc;
1062
1063         QL_DPRINT8((ha->pci_dev, "%s: enter\n", __func__));
1064
1065         if (!mtx_trylock(&ha->tx_lock)) {
1066                 QL_DPRINT8((ha->pci_dev,
1067                         "%s: mtx_trylock(&ha->tx_lock) failed\n", __func__));
1068                 return;
1069         }
1070
1071         if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) ==
1072                 IFF_DRV_RUNNING) {
1073
1074                 for (i = 0; i < ha->num_tx_rings; i++) {
1075                         ret |= qls_hw_tx_done(ha, i);
1076                 }
1077
1078                 if (ret == 0)
1079                         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1080         }
1081
1082         if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
1083                 IFF_DRV_RUNNING) {
1084                 QL_DPRINT8((ha->pci_dev, "%s: !IFF_DRV_RUNNING\n", __func__));
1085                 QLA_TX_UNLOCK(ha);
1086                 return;
1087         }
1088
1089         if (!ha->link_up) {
1090                 qls_update_link_state(ha);
1091                 if (!ha->link_up) {
1092                         QL_DPRINT8((ha->pci_dev, "%s: link down\n", __func__));
1093                         QLA_TX_UNLOCK(ha);
1094                         return;
1095                 }
1096         }
1097
1098         while (ifp->if_snd.ifq_head != NULL) {
1099
1100                 IF_DEQUEUE(&ifp->if_snd, m_head);
1101
1102                 if (m_head == NULL) {
1103                         QL_DPRINT8((ha->pci_dev, "%s: m_head == NULL\n",
1104                                 __func__));
1105                         break;
1106                 }
1107
1108                 if (qls_send(ha, &m_head)) {
1109                         if (m_head == NULL)
1110                                 break;
1111                         QL_DPRINT8((ha->pci_dev, "%s: PREPEND\n", __func__));
1112                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1113                         IF_PREPEND(&ifp->if_snd, m_head);
1114                         break;
1115                 }
1116                 /* Send a copy of the frame to the BPF listener */
1117                 ETHER_BPF_MTAP(ifp, m_head);
1118         }
1119
1120         QLA_TX_UNLOCK(ha);
1121         QL_DPRINT8((ha->pci_dev, "%s: exit\n", __func__));
1122         return;
1123 }
1124
1125 static int
1126 qls_send(qla_host_t *ha, struct mbuf **m_headp)
1127 {
1128         bus_dma_segment_t       segs[QLA_MAX_SEGMENTS];
1129         bus_dmamap_t            map;
1130         int                     nsegs;
1131         int                     ret = -1;
1132         uint32_t                tx_idx;
1133         struct mbuf             *m_head = *m_headp;
1134         uint32_t                txr_idx = 0;
1135
1136         QL_DPRINT8((ha->pci_dev, "%s: enter\n", __func__));
1137
1138         if (m_head->m_flags & M_FLOWID)
1139                 txr_idx = m_head->m_pkthdr.flowid & (ha->num_tx_rings - 1);
1140
1141         tx_idx = ha->tx_ring[txr_idx].txr_next;
1142
1143         map = ha->tx_ring[txr_idx].tx_buf[tx_idx].map;
1144
1145         ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head, segs, &nsegs,
1146                         BUS_DMA_NOWAIT);
1147
1148         if (ret == EFBIG) {
1149
1150                 struct mbuf *m;
1151
1152                 QL_DPRINT8((ha->pci_dev, "%s: EFBIG [%d]\n", __func__,
1153                         m_head->m_pkthdr.len));
1154
1155                 m = m_defrag(m_head, M_NOWAIT);
1156                 if (m == NULL) {
1157                         ha->err_tx_defrag++;
1158                         m_freem(m_head);
1159                         *m_headp = NULL;
1160                         device_printf(ha->pci_dev,
1161                                 "%s: m_defrag() = NULL [%d]\n",
1162                                 __func__, ret);
1163                         return (ENOBUFS);
1164                 }
1165                 m_head = m;
1166                 *m_headp = m_head;
1167
1168                 if ((ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head,
1169                                         segs, &nsegs, BUS_DMA_NOWAIT))) {
1170
1171                         ha->err_tx_dmamap_load++;
1172
1173                         device_printf(ha->pci_dev,
1174                                 "%s: bus_dmamap_load_mbuf_sg failed0[%d, %d]\n",
1175                                 __func__, ret, m_head->m_pkthdr.len);
1176
1177                         if (ret != ENOMEM) {
1178                                 m_freem(m_head);
1179                                 *m_headp = NULL;
1180                         }
1181                         return (ret);
1182                 }
1183
1184         } else if (ret) {
1185
1186                 ha->err_tx_dmamap_load++;
1187
1188                 device_printf(ha->pci_dev,
1189                         "%s: bus_dmamap_load_mbuf_sg failed1[%d, %d]\n",
1190                         __func__, ret, m_head->m_pkthdr.len);
1191
1192                 if (ret != ENOMEM) {
1193                         m_freem(m_head);
1194                         *m_headp = NULL;
1195                 }
1196                 return (ret);
1197         }
1198
1199         QL_ASSERT(ha, (nsegs != 0), ("qls_send: empty packet"));
1200
1201         bus_dmamap_sync(ha->tx_tag, map, BUS_DMASYNC_PREWRITE);
1202
1203         if (!(ret = qls_hw_send(ha, segs, nsegs, tx_idx, m_head, txr_idx))) {
1204
1205                 ha->tx_ring[txr_idx].count++;
1206                 ha->tx_ring[txr_idx].tx_buf[tx_idx].m_head = m_head;
1207                 ha->tx_ring[txr_idx].tx_buf[tx_idx].map = map;
1208         } else {
1209                 if (ret == EINVAL) {
1210                         if (m_head)
1211                                 m_freem(m_head);
1212                         *m_headp = NULL;
1213                 }
1214         }
1215
1216         QL_DPRINT8((ha->pci_dev, "%s: exit\n", __func__));
1217         return (ret);
1218 }
1219
1220 static void
1221 qls_stop(qla_host_t *ha)
1222 {
1223         struct ifnet *ifp = ha->ifp;
1224         device_t        dev;
1225
1226         dev = ha->pci_dev;
1227
1228         ifp->if_drv_flags &= ~(IFF_DRV_OACTIVE | IFF_DRV_RUNNING);
1229
1230         ha->flags.qla_watchdog_pause = 1;
1231
1232         while (!ha->qla_watchdog_paused)
1233                 qls_mdelay(__func__, 1);
1234
1235         qls_del_hw_if(ha);
1236
1237         qls_free_lro(ha);
1238
1239         qls_flush_xmt_bufs(ha);
1240         qls_free_rcv_bufs(ha);
1241
1242         return;
1243 }
1244
1245 /*
1246  * Buffer Management Functions for Transmit and Receive Rings
1247  */
1248 /*
1249  * Release mbuf after it sent on the wire
1250  */
1251 static void
1252 qls_flush_tx_buf(qla_host_t *ha, qla_tx_buf_t *txb)
1253 {
1254         QL_DPRINT2((ha->pci_dev, "%s: enter\n", __func__));
1255
1256         if (txb->m_head) {
1257
1258                 bus_dmamap_unload(ha->tx_tag, txb->map);
1259
1260                 m_freem(txb->m_head);
1261                 txb->m_head = NULL;
1262         }
1263
1264         QL_DPRINT2((ha->pci_dev, "%s: exit\n", __func__));
1265 }
1266
1267 static void
1268 qls_flush_xmt_bufs(qla_host_t *ha)
1269 {
1270         int             i, j;
1271
1272         for (j = 0; j < ha->num_tx_rings; j++) {
1273                 for (i = 0; i < NUM_TX_DESCRIPTORS; i++)
1274                         qls_flush_tx_buf(ha, &ha->tx_ring[j].tx_buf[i]);
1275         }
1276
1277         return;
1278 }
1279
1280
1281 static int
1282 qls_alloc_rcv_mbufs(qla_host_t *ha, int r)
1283 {
1284         int                     i, j, ret = 0;
1285         qla_rx_buf_t            *rxb;
1286         qla_rx_ring_t           *rx_ring;
1287         volatile q81_bq_addr_e_t *sbq_e;
1288
1289
1290         rx_ring = &ha->rx_ring[r];
1291
1292         for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1293
1294                 rxb = &rx_ring->rx_buf[i];
1295
1296                 ret = bus_dmamap_create(ha->rx_tag, BUS_DMA_NOWAIT, &rxb->map);
1297
1298                 if (ret) {
1299                         device_printf(ha->pci_dev,
1300                                 "%s: dmamap[%d, %d] failed\n", __func__, r, i);
1301
1302                         for (j = 0; j < i; j++) {
1303                                 rxb = &rx_ring->rx_buf[j];
1304                                 bus_dmamap_destroy(ha->rx_tag, rxb->map);
1305                         }
1306                         goto qls_alloc_rcv_mbufs_err;
1307                 }
1308         }
1309
1310         rx_ring = &ha->rx_ring[r];
1311
1312         sbq_e = rx_ring->sbq_vaddr;
1313
1314         rxb = &rx_ring->rx_buf[0];
1315
1316         for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1317
1318                 if (!(ret = qls_get_mbuf(ha, rxb, NULL))) {
1319
1320                         /*
1321                          * set the physical address in the
1322                          * corresponding descriptor entry in the
1323                          * receive ring/queue for the hba
1324                          */
1325
1326                         sbq_e->addr_lo = rxb->paddr & 0xFFFFFFFF;
1327                         sbq_e->addr_hi = (rxb->paddr >> 32) & 0xFFFFFFFF;
1328
1329                 } else {
1330                         device_printf(ha->pci_dev,
1331                                 "%s: qls_get_mbuf [%d, %d] failed\n",
1332                                         __func__, r, i);
1333                         bus_dmamap_destroy(ha->rx_tag, rxb->map);
1334                         goto qls_alloc_rcv_mbufs_err;
1335                 }
1336
1337                 rxb++;
1338                 sbq_e++;
1339         }
1340         return 0;
1341
1342 qls_alloc_rcv_mbufs_err:
1343         return (-1);
1344 }
1345
1346 static void
1347 qls_free_rcv_bufs(qla_host_t *ha)
1348 {
1349         int             i, r;
1350         qla_rx_buf_t    *rxb;
1351         qla_rx_ring_t   *rxr;
1352
1353         for (r = 0; r < ha->num_rx_rings; r++) {
1354
1355                 rxr = &ha->rx_ring[r];
1356
1357                 for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1358
1359                         rxb = &rxr->rx_buf[i];
1360
1361                         if (rxb->m_head != NULL) {
1362                                 bus_dmamap_unload(ha->rx_tag, rxb->map);
1363                                 bus_dmamap_destroy(ha->rx_tag, rxb->map);
1364                                 m_freem(rxb->m_head);
1365                         }
1366                 }
1367                 bzero(rxr->rx_buf, (sizeof(qla_rx_buf_t) * NUM_RX_DESCRIPTORS));
1368         }
1369         return;
1370 }
1371
1372 static int
1373 qls_alloc_rcv_bufs(qla_host_t *ha)
1374 {
1375         int             r, ret = 0;
1376         qla_rx_ring_t   *rxr;
1377
1378         for (r = 0; r < ha->num_rx_rings; r++) {
1379                 rxr = &ha->rx_ring[r];
1380                 bzero(rxr->rx_buf, (sizeof(qla_rx_buf_t) * NUM_RX_DESCRIPTORS));
1381         }
1382
1383         for (r = 0; r < ha->num_rx_rings; r++) {
1384
1385                 ret = qls_alloc_rcv_mbufs(ha, r);
1386
1387                 if (ret)
1388                         qls_free_rcv_bufs(ha);
1389         }
1390
1391         return (ret);
1392 }
1393
1394 int
1395 qls_get_mbuf(qla_host_t *ha, qla_rx_buf_t *rxb, struct mbuf *nmp)
1396 {
1397         register struct mbuf *mp = nmp;
1398         struct ifnet            *ifp;
1399         int                     ret = 0;
1400         uint32_t                offset;
1401         bus_dma_segment_t       segs[1];
1402         int                     nsegs;
1403
1404         QL_DPRINT2((ha->pci_dev, "%s: enter\n", __func__));
1405
1406         ifp = ha->ifp;
1407
1408         if (mp == NULL) {
1409
1410                 mp = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, ha->msize);
1411
1412                 if (mp == NULL) {
1413
1414                         if (ha->msize == MCLBYTES)
1415                                 ha->err_m_getcl++;
1416                         else
1417                                 ha->err_m_getjcl++;
1418
1419                         ret = ENOBUFS;
1420                         device_printf(ha->pci_dev,
1421                                         "%s: m_getcl failed\n", __func__);
1422                         goto exit_qls_get_mbuf;
1423                 }
1424                 mp->m_len = mp->m_pkthdr.len = ha->msize;
1425         } else {
1426                 mp->m_len = mp->m_pkthdr.len = ha->msize;
1427                 mp->m_data = mp->m_ext.ext_buf;
1428                 mp->m_next = NULL;
1429         }
1430
1431         /* align the receive buffers to 8 byte boundary */
1432         offset = (uint32_t)((unsigned long long)mp->m_data & 0x7ULL);
1433         if (offset) {
1434                 offset = 8 - offset;
1435                 m_adj(mp, offset);
1436         }
1437
1438         /*
1439          * Using memory from the mbuf cluster pool, invoke the bus_dma
1440          * machinery to arrange the memory mapping.
1441          */
1442         ret = bus_dmamap_load_mbuf_sg(ha->rx_tag, rxb->map,
1443                         mp, segs, &nsegs, BUS_DMA_NOWAIT);
1444         rxb->paddr = segs[0].ds_addr;
1445
1446         if (ret || !rxb->paddr || (nsegs != 1)) {
1447                 m_freem(mp);
1448                 rxb->m_head = NULL;
1449                 device_printf(ha->pci_dev,
1450                         "%s: bus_dmamap_load failed[%d, 0x%016llx, %d]\n",
1451                         __func__, ret, (long long unsigned int)rxb->paddr,
1452                         nsegs);
1453                 ret = -1;
1454                 goto exit_qls_get_mbuf;
1455         }
1456         rxb->m_head = mp;
1457         bus_dmamap_sync(ha->rx_tag, rxb->map, BUS_DMASYNC_PREREAD);
1458
1459 exit_qls_get_mbuf:
1460         QL_DPRINT2((ha->pci_dev, "%s: exit ret = 0x%08x\n", __func__, ret));
1461         return (ret);
1462 }
1463
1464 static void
1465 qls_tx_done(void *context, int pending)
1466 {
1467         qla_host_t *ha = context;
1468         struct ifnet   *ifp;
1469
1470         ifp = ha->ifp;
1471
1472         if (!ifp)
1473                 return;
1474
1475         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1476                 QL_DPRINT8((ha->pci_dev, "%s: !IFF_DRV_RUNNING\n", __func__));
1477                 return;
1478         }
1479
1480         qls_start(ha->ifp);
1481         return;
1482 }
1483
1484 static int
1485 qls_config_lro(qla_host_t *ha)
1486 {
1487         int i;
1488         struct lro_ctrl *lro;
1489
1490         for (i = 0; i < ha->num_rx_rings; i++) {
1491                 lro = &ha->rx_ring[i].lro;
1492                 if (tcp_lro_init(lro)) {
1493                         device_printf(ha->pci_dev, "%s: tcp_lro_init failed\n",
1494                                 __func__);
1495                         return (-1);
1496                 }
1497                 lro->ifp = ha->ifp;
1498         }
1499         ha->flags.lro_init = 1;
1500
1501         QL_DPRINT2((ha->pci_dev, "%s: LRO initialized\n", __func__));
1502         return (0);
1503 }
1504
1505 static void
1506 qls_free_lro(qla_host_t *ha)
1507 {
1508         int i;
1509         struct lro_ctrl *lro;
1510
1511         if (!ha->flags.lro_init)
1512                 return;
1513
1514         for (i = 0; i < ha->num_rx_rings; i++) {
1515                 lro = &ha->rx_ring[i].lro;
1516                 tcp_lro_free(lro);
1517         }
1518         ha->flags.lro_init = 0;
1519 }
1520
1521 static void
1522 qls_error_recovery(void *context, int pending)
1523 {
1524         qla_host_t *ha = context;
1525
1526         qls_init(ha);
1527
1528         return;
1529 }
1530