lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/queue.h>
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #include <stdint.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40 #include <stdarg.h>
  41 #include <fcntl.h>
  42 #include <inttypes.h>
  43 #include <rte_byteorder.h>
  44 #include <rte_common.h>
  45 #include <rte_cycles.h>
  46
  47 #include <rte_interrupts.h>
  48 #include <rte_log.h>
  49 #include <rte_debug.h>
  50 #include <rte_pci.h>
  51 #include <rte_atomic.h>
  52 #include <rte_branch_prediction.h>
  53 #include <rte_memory.h>
  54 #include <rte_memzone.h>
  55 #include <rte_eal.h>
  56 #include <rte_alarm.h>
  57 #include <rte_ether.h>
  58 #include <rte_ethdev.h>
  59 #include <rte_atomic.h>
  60 #include <rte_string_fns.h>
  61 #include <rte_malloc.h>
  62 #include <rte_dev.h>
  63
  64 #include "vmxnet3/vmxnet3_defs.h"
  65
  66 #include "vmxnet3_ring.h"
  67 #include "vmxnet3_logs.h"
  68 #include "vmxnet3_ethdev.h"
  69
  70 #define PROCESS_SYS_EVENTS 0
  71
  72 static int eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev);
  73 static int vmxnet3_dev_configure(struct rte_eth_dev *dev);
  74 static int vmxnet3_dev_start(struct rte_eth_dev *dev);
  75 static void vmxnet3_dev_stop(struct rte_eth_dev *dev);
  76 static void vmxnet3_dev_close(struct rte_eth_dev *dev);
  77 static void vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set);
  78 static void vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev);
  79 static void vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev);
  80 static void vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev);
  81 static void vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev);
  82 static int vmxnet3_dev_link_update(struct rte_eth_dev *dev,
  83                                 int wait_to_complete);
  84 static void vmxnet3_dev_stats_get(struct rte_eth_dev *dev,
  85                                 struct rte_eth_stats *stats);
  86 static void vmxnet3_dev_info_get(struct rte_eth_dev *dev,
  87                                 struct rte_eth_dev_info *dev_info);
  88 #if PROCESS_SYS_EVENTS == 1
  89 static void vmxnet3_process_events(struct vmxnet3_hw *);
  90 #endif
  91 /*
  92  * The set of PCI devices this driver supports
  93  */
  94 static struct rte_pci_id pci_id_vmxnet3_map[] = {
  95
  96 #define RTE_PCI_DEV_ID_DECL_VMXNET3(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
  97 #include "rte_pci_dev_ids.h"
  98
  99 { .vendor_id = 0, /* sentinel */ },
 100 };
 101
 102 static struct eth_dev_ops vmxnet3_eth_dev_ops = {
 103         .dev_configure        = vmxnet3_dev_configure,
 104         .dev_start            = vmxnet3_dev_start,
 105         .dev_stop             = vmxnet3_dev_stop,
 106         .dev_close            = vmxnet3_dev_close,
 107         .promiscuous_enable   = vmxnet3_dev_promiscuous_enable,
 108         .promiscuous_disable  = vmxnet3_dev_promiscuous_disable,
 109         .allmulticast_enable  = vmxnet3_dev_allmulticast_enable,
 110         .allmulticast_disable = vmxnet3_dev_allmulticast_disable,
 111         .link_update          = vmxnet3_dev_link_update,
 112         .stats_get            = vmxnet3_dev_stats_get,
 113         .dev_infos_get        = vmxnet3_dev_info_get,
 114         .rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
 115         .rx_queue_release     = vmxnet3_dev_rx_queue_release,
 116         .tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
 117         .tx_queue_release     = vmxnet3_dev_tx_queue_release,
 118 };
 119
 120 static const struct rte_memzone *
 121 gpa_zone_reserve(struct rte_eth_dev *dev, uint32_t size,
 122                 const char *post_string, int socket_id, uint16_t align)
 123 {
 124         char z_name[RTE_MEMZONE_NAMESIZE];
 125         const struct rte_memzone *mz;
 126
 127         snprintf(z_name, sizeof(z_name), "%s_%d_%s",
 128                                         dev->driver->pci_drv.name, dev->data->port_id, post_string);
 129
 130         mz = rte_memzone_lookup(z_name);
 131         if (mz)
 132                 return mz;
 133
 134         return rte_memzone_reserve_aligned(z_name, size,
 135                         socket_id, 0, align);
 136 }
 137
 138 /**
 139  * Atomically reads the link status information from global
 140  * structure rte_eth_dev.
 141  *
 142  * @param dev
 143  *   - Pointer to the structure rte_eth_dev to read from.
 144  *   - Pointer to the buffer to be saved with the link status.
 145  *
 146  * @return
 147  *   - On success, zero.
 148  *   - On failure, negative value.
 149  */
 150 static inline int
 151 rte_vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
 152                                 struct rte_eth_link *link)
 153 {
 154         struct rte_eth_link *dst = &(dev->data->dev_link);
 155         struct rte_eth_link *src = link;
 156
 157         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 158                                         *(uint64_t *)src) == 0)
 159                 return -1;
 160
 161         return 0;
 162 }
 163
 164 /*
 165  * This function is based on vmxnet3_disable_intr()
 166  */
 167 static void
 168 vmxnet3_disable_intr(struct vmxnet3_hw *hw)
 169 {
 170         int i;
 171
 172         PMD_INIT_FUNC_TRACE();
 173
 174         hw->shared->devRead.intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 175         for (i = 0; i < VMXNET3_MAX_INTRS; i++)
 176                         VMXNET3_WRITE_BAR0_REG(hw, VMXNET3_REG_IMR + i * 8, 1);
 177 }
 178
 179 /*
 180  * It returns 0 on success.
 181  */
 182 static int
 183 eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
 184 {
 185         struct rte_pci_device *pci_dev;
 186         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
 187         uint32_t mac_hi, mac_lo, ver;
 188
 189         PMD_INIT_FUNC_TRACE();
 190
 191         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
 192         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
 193         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
 194         pci_dev = eth_dev->pci_dev;
 195
 196         /*
 197          * for secondary processes, we don't initialise any further as primary
 198          * has already done this work.
 199          */
 200         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 201                 return 0;
 202
 203         /* Vendor and Device ID need to be set before init of shared code */
 204         hw->device_id = pci_dev->id.device_id;
 205         hw->vendor_id = pci_dev->id.vendor_id;
 206         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
 207         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
 208
 209         hw->num_rx_queues = 1;
 210         hw->num_tx_queues = 1;
 211         hw->cur_mtu = ETHER_MTU;
 212         hw->bufs_per_pkt = 1;
 213
 214         /* Check h/w version compatibility with driver. */
 215         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
 216         PMD_INIT_LOG(DEBUG, "Harware version : %d", ver);
 217         if (ver & 0x1)
 218                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
 219         else {
 220                 PMD_INIT_LOG(ERR, "Uncompatiable h/w version, should be 0x1");
 221                 return -EIO;
 222         }
 223
 224         /* Check UPT version compatibility with driver. */
 225         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
 226         PMD_INIT_LOG(DEBUG, "UPT harware version : %d", ver);
 227         if (ver & 0x1)
 228                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
 229         else {
 230                 PMD_INIT_LOG(ERR, "Incompatiable UPT version.");
 231                 return -EIO;
 232         }
 233
 234         /* Getting MAC Address */
 235         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
 236         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
 237         memcpy(hw->perm_addr  , &mac_lo, 4);
 238         memcpy(hw->perm_addr+4, &mac_hi, 2);
 239
 240         /* Allocate memory for storing MAC addresses */
 241         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
 242                                                VMXNET3_MAX_MAC_ADDRS, 0);
 243         if (eth_dev->data->mac_addrs == NULL) {
 244                 PMD_INIT_LOG(ERR,
 245                              "Failed to allocate %d bytes needed to store MAC addresses",
 246                              ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
 247                 return -ENOMEM;
 248         }
 249         /* Copy the permanent MAC address */
 250         ether_addr_copy((struct ether_addr *) hw->perm_addr,
 251                         &eth_dev->data->mac_addrs[0]);
 252
 253         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 254                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 255                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 256
 257         /* Put device in Quiesce Mode */
 258         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 259
 260         return 0;
 261 }
 262
 263 static struct eth_driver rte_vmxnet3_pmd = {
 264         {
 265                 .name = "rte_vmxnet3_pmd",
 266                 .id_table = pci_id_vmxnet3_map,
 267                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
 268         },
 269         .eth_dev_init = eth_vmxnet3_dev_init,
 270         .dev_private_size = sizeof(struct vmxnet3_hw),
 271 };
 272
 273 /*
 274  * Driver initialization routine.
 275  * Invoked once at EAL init time.
 276  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
 277  */
 278 static int
 279 rte_vmxnet3_pmd_init(const char *name __rte_unused, const char *param __rte_unused)
 280 {
 281         PMD_INIT_FUNC_TRACE();
 282
 283         rte_eth_driver_register(&rte_vmxnet3_pmd);
 284         return 0;
 285 }
 286
 287 static int
 288 vmxnet3_dev_configure(struct rte_eth_dev *dev)
 289 {
 290         const struct rte_memzone *mz;
 291         struct vmxnet3_hw *hw = dev->data->dev_private;
 292         size_t size;
 293
 294         PMD_INIT_FUNC_TRACE();
 295
 296         if (dev->data->nb_rx_queues > UINT8_MAX ||
 297             dev->data->nb_tx_queues > UINT8_MAX)
 298                 return -EINVAL;
 299
 300         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
 301                 dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc);
 302
 303         if (size > UINT16_MAX)
 304                 return -EINVAL;
 305
 306         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
 307         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
 308
 309         /*
 310          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
 311          * on current socket
 312          */
 313         mz = gpa_zone_reserve(dev, sizeof(struct Vmxnet3_DriverShared),
 314                               "shared", rte_socket_id(), 8);
 315
 316         if (mz == NULL) {
 317                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone");
 318                 return -ENOMEM;
 319         }
 320         memset(mz->addr, 0, mz->len);
 321
 322         hw->shared = mz->addr;
 323         hw->sharedPA = mz->phys_addr;
 324
 325         /*
 326          * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
 327          * on current socket
 328          */
 329         mz = gpa_zone_reserve(dev, size, "queuedesc",
 330                               rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
 331         if (mz == NULL) {
 332                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone");
 333                 return -ENOMEM;
 334         }
 335         memset(mz->addr, 0, mz->len);
 336
 337         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
 338         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
 339
 340         hw->queueDescPA = mz->phys_addr;
 341         hw->queue_desc_len = (uint16_t)size;
 342
 343         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 344
 345                 /* Allocate memory structure for UPT1_RSSConf and configure */
 346                 mz = gpa_zone_reserve(dev, sizeof(struct VMXNET3_RSSConf), "rss_conf",
 347                                       rte_socket_id(), RTE_CACHE_LINE_SIZE);
 348                 if (mz == NULL) {
 349                         PMD_INIT_LOG(ERR,
 350                                      "ERROR: Creating rss_conf structure zone");
 351                         return -ENOMEM;
 352                 }
 353                 memset(mz->addr, 0, mz->len);
 354
 355                 hw->rss_conf = mz->addr;
 356                 hw->rss_confPA = mz->phys_addr;
 357         }
 358
 359         return 0;
 360 }
 361
 362 static int
 363 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 364 {
 365         struct rte_eth_conf port_conf = dev->data->dev_conf;
 366         struct vmxnet3_hw *hw = dev->data->dev_private;
 367         Vmxnet3_DriverShared *shared = hw->shared;
 368         Vmxnet3_DSDevRead *devRead = &shared->devRead;
 369         uint32_t *mac_ptr;
 370         uint32_t val, i;
 371         int ret;
 372
 373         shared->magic = VMXNET3_REV1_MAGIC;
 374         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
 375
 376         /* Setting up Guest OS information */
 377         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
 378                 VMXNET3_GOS_BITS_32 :
 379                 VMXNET3_GOS_BITS_64;
 380         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
 381         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
 382         devRead->misc.driverInfo.uptVerSpt     = 1;
 383
 384         devRead->misc.queueDescPA  = hw->queueDescPA;
 385         devRead->misc.queueDescLen = hw->queue_desc_len;
 386         devRead->misc.mtu          = hw->cur_mtu;
 387         devRead->misc.numTxQueues  = hw->num_tx_queues;
 388         devRead->misc.numRxQueues  = hw->num_rx_queues;
 389
 390         /*
 391          * Set number of interrupts to 1
 392          * PMD disables all the interrupts but this is MUST to activate device
 393          * It needs at least one interrupt for link events to handle
 394          * So we'll disable it later after device activation if needed
 395          */
 396         devRead->intrConf.numIntrs = 1;
 397         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 398
 399         for (i = 0; i < hw->num_tx_queues; i++) {
 400                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
 401                 vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
 402
 403                 tqd->ctrl.txNumDeferred  = 0;
 404                 tqd->ctrl.txThreshold    = 1;
 405                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
 406                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
 407                 tqd->conf.dataRingBasePA = txq->data_ring.basePA;
 408
 409                 tqd->conf.txRingSize   = txq->cmd_ring.size;
 410                 tqd->conf.compRingSize = txq->comp_ring.size;
 411                 tqd->conf.dataRingSize = txq->data_ring.size;
 412                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
 413                 tqd->status.stopped    = TRUE;
 414                 tqd->status.error      = 0;
 415                 memset(&tqd->stats, 0, sizeof(tqd->stats));
 416         }
 417
 418         for (i = 0; i < hw->num_rx_queues; i++) {
 419                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
 420                 vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
 421
 422                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
 423                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
 424                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
 425
 426                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
 427                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
 428                 rqd->conf.compRingSize    = rxq->comp_ring.size;
 429                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
 430                 rqd->status.stopped       = TRUE;
 431                 rqd->status.error         = 0;
 432                 memset(&rqd->stats, 0, sizeof(rqd->stats));
 433         }
 434
 435         /* RxMode set to 0 of VMXNET3_RXM_xxx */
 436         devRead->rxFilterConf.rxMode = 0;
 437
 438         /* Setting up feature flags */
 439         if (dev->data->dev_conf.rxmode.hw_ip_checksum)
 440                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 441
 442         if (dev->data->dev_conf.rxmode.hw_vlan_strip)
 443                 devRead->misc.uptFeatures |= VMXNET3_F_RXVLAN;
 444
 445         if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 446                 ret = vmxnet3_rss_configure(dev);
 447                 if (ret != VMXNET3_SUCCESS)
 448                         return ret;
 449
 450                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
 451                 devRead->rssConfDesc.confVer = 1;
 452                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
 453                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
 454         }
 455
 456         if (dev->data->dev_conf.rxmode.hw_vlan_filter) {
 457                 ret = vmxnet3_vlan_configure(dev);
 458                 if (ret != VMXNET3_SUCCESS)
 459                         return ret;
 460         }
 461
 462         PMD_INIT_LOG(DEBUG,
 463                      "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 464                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 465                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 466
 467         /* Write MAC Address back to device */
 468         mac_ptr = (uint32_t *)hw->perm_addr;
 469         val = *mac_ptr;
 470         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
 471
 472         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
 473         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
 474
 475         return VMXNET3_SUCCESS;
 476 }
 477
 478 /*
 479  * Configure device link speed and setup link.
 480  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
 481  * It returns 0 on success.
 482  */
 483 static int
 484 vmxnet3_dev_start(struct rte_eth_dev *dev)
 485 {
 486         int status, ret;
 487         struct vmxnet3_hw *hw = dev->data->dev_private;
 488
 489         PMD_INIT_FUNC_TRACE();
 490
 491         ret = vmxnet3_setup_driver_shared(dev);
 492         if (ret != VMXNET3_SUCCESS)
 493                 return ret;
 494
 495         /* Exchange shared data with device */
 496         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL,
 497                                VMXNET3_GET_ADDR_LO(hw->sharedPA));
 498         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH,
 499                                VMXNET3_GET_ADDR_HI(hw->sharedPA));
 500
 501         /* Activate device by register write */
 502         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
 503         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 504
 505         if (status != 0) {
 506                 PMD_INIT_LOG(ERR, "Device activation in %s(): UNSUCCESSFUL", __func__);
 507                 return -1;
 508         }
 509
 510         /* Disable interrupts */
 511         vmxnet3_disable_intr(hw);
 512
 513         /*
 514          * Load RX queues with blank mbufs and update next2fill index for device
 515          * Update RxMode of the device
 516          */
 517         ret = vmxnet3_dev_rxtx_init(dev);
 518         if (ret != VMXNET3_SUCCESS) {
 519                 PMD_INIT_LOG(ERR, "Device receive init in %s: UNSUCCESSFUL", __func__);
 520                 return ret;
 521         }
 522
 523         /* Setting proper Rx Mode and issue Rx Mode Update command */
 524         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_BCAST, 1);
 525
 526         /*
 527          * Don't need to handle events for now
 528          */
 529 #if PROCESS_SYS_EVENTS == 1
 530         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
 531         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X", events);
 532         vmxnet3_process_events(hw);
 533 #endif
 534         return status;
 535 }
 536
 537 /*
 538  * Stop device: disable rx and tx functions to allow for reconfiguring.
 539  */
 540 static void
 541 vmxnet3_dev_stop(struct rte_eth_dev *dev)
 542 {
 543         struct rte_eth_link link;
 544         struct vmxnet3_hw *hw = dev->data->dev_private;
 545
 546         PMD_INIT_FUNC_TRACE();
 547
 548         if (hw->adapter_stopped == TRUE) {
 549                 PMD_INIT_LOG(DEBUG, "Device already closed.");
 550                 return;
 551         }
 552
 553         /* disable interrupts */
 554         vmxnet3_disable_intr(hw);
 555
 556         /* quiesce the device first */
 557         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 558         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
 559         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
 560
 561         /* reset the device */
 562         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
 563         PMD_INIT_LOG(DEBUG, "Device reset.");
 564         hw->adapter_stopped = FALSE;
 565
 566         vmxnet3_dev_clear_queues(dev);
 567
 568         /* Clear recorded link status */
 569         memset(&link, 0, sizeof(link));
 570         rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 571 }
 572
 573 /*
 574  * Reset and stop device.
 575  */
 576 static void
 577 vmxnet3_dev_close(struct rte_eth_dev *dev)
 578 {
 579         struct vmxnet3_hw *hw = dev->data->dev_private;
 580
 581         PMD_INIT_FUNC_TRACE();
 582
 583         vmxnet3_dev_stop(dev);
 584         hw->adapter_stopped = TRUE;
 585 }
 586
 587 static void
 588 vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 589 {
 590         unsigned int i;
 591         struct vmxnet3_hw *hw = dev->data->dev_private;
 592
 593         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 594
 595         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES);
 596         for (i = 0; i < hw->num_tx_queues; i++) {
 597                 struct UPT1_TxStats *txStats = &hw->tqd_start[i].stats;
 598
 599                 stats->q_opackets[i] = txStats->ucastPktsTxOK +
 600                         txStats->mcastPktsTxOK +
 601                         txStats->bcastPktsTxOK;
 602                 stats->q_obytes[i] = txStats->ucastBytesTxOK +
 603                         txStats->mcastBytesTxOK +
 604                         txStats->bcastBytesTxOK;
 605
 606                 stats->opackets += stats->q_opackets[i];
 607                 stats->obytes += stats->q_obytes[i];
 608                 stats->oerrors += txStats->pktsTxError +
 609                         txStats->pktsTxDiscard;
 610         }
 611
 612         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES);
 613         for (i = 0; i < hw->num_rx_queues; i++) {
 614                 struct UPT1_RxStats *rxStats = &hw->rqd_start[i].stats;
 615
 616                 stats->q_ipackets[i] = rxStats->ucastPktsRxOK +
 617                         rxStats->mcastPktsRxOK +
 618                         rxStats->bcastPktsRxOK;
 619
 620                 stats->q_ibytes[i] = rxStats->ucastBytesRxOK +
 621                         rxStats->mcastBytesRxOK +
 622                         rxStats->bcastBytesRxOK;
 623
 624                 stats->ipackets += stats->q_ipackets[i];
 625                 stats->ibytes += stats->q_ibytes[i];
 626
 627                 stats->q_errors[i] = rxStats->pktsRxError;
 628                 stats->ierrors += rxStats->pktsRxError;
 629                 stats->imcasts += rxStats->mcastPktsRxOK;
 630                 stats->rx_nombuf += rxStats->pktsRxOutOfBuf;
 631         }
 632 }
 633
 634 static void
 635 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 636 {
 637         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
 638         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
 639         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
 640         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
 641         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
 642
 643         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
 644                                                 ETH_TXQ_FLAGS_NOOFFLOADS;
 645         dev_info->flow_type_rss_offloads = VMXNET3_RSS_OFFLOAD_ALL;
 646 }
 647
 648 /* return 0 means link status changed, -1 means not changed */
 649 static int
 650 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
 651 {
 652         struct vmxnet3_hw *hw = dev->data->dev_private;
 653         struct rte_eth_link link;
 654         uint32_t ret;
 655
 656         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
 657         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 658
 659         if (!ret) {
 660                 PMD_INIT_LOG(ERR, "Link Status Negative : %s()", __func__);
 661                 return -1;
 662         }
 663
 664         if (ret & 0x1) {
 665                 link.link_status = 1;
 666                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
 667                 link.link_speed = ETH_LINK_SPEED_10000;
 668
 669                 rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 670
 671                 return 0;
 672         }
 673
 674         return -1;
 675 }
 676
 677 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
 678 static void
 679 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
 680
 681         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 682
 683         if (set)
 684                 rxConf->rxMode = rxConf->rxMode | feature;
 685         else
 686                 rxConf->rxMode = rxConf->rxMode & (~feature);
 687
 688         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
 689 }
 690
 691 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 692 static void
 693 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
 694 {
 695         struct vmxnet3_hw *hw = dev->data->dev_private;
 696
 697         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 698 }
 699
 700 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 701 static void
 702 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 703 {
 704         struct vmxnet3_hw *hw = dev->data->dev_private;
 705
 706         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 707 }
 708
 709 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 710 static void
 711 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
 712 {
 713         struct vmxnet3_hw *hw = dev->data->dev_private;
 714
 715         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 1);
 716 }
 717
 718 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 719 static void
 720 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 721 {
 722         struct vmxnet3_hw *hw = dev->data->dev_private;
 723
 724         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
 725 }
 726
 727 #if PROCESS_SYS_EVENTS == 1
 728 static void
 729 vmxnet3_process_events(struct vmxnet3_hw *hw)
 730 {
 731         uint32_t events = hw->shared->ecr;
 732
 733         if (!events) {
 734                 PMD_INIT_LOG(ERR, "No events to process in %s()", __func__);
 735                 return;
 736         }
 737
 738         /*
 739          * ECR bits when written with 1b are cleared. Hence write
 740          * events back to ECR so that the bits which were set will be reset.
 741          */
 742         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
 743
 744         /* Check if link state has changed */
 745         if (events & VMXNET3_ECR_LINK)
 746                 PMD_INIT_LOG(ERR,
 747                              "Process events in %s(): VMXNET3_ECR_LINK event", __func__);
 748
 749         /* Check if there is an error on xmit/recv queues */
 750         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
 751                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
 752
 753                 if (hw->tqd_start->status.stopped)
 754                         PMD_INIT_LOG(ERR, "tq error 0x%x",
 755                                      hw->tqd_start->status.error);
 756
 757                 if (hw->rqd_start->status.stopped)
 758                         PMD_INIT_LOG(ERR, "rq error 0x%x",
 759                                      hw->rqd_start->status.error);
 760
 761                 /* Reset the device */
 762                 /* Have to reset the device */
 763         }
 764
 765         if (events & VMXNET3_ECR_DIC)
 766                 PMD_INIT_LOG(ERR, "Device implementation change event.");
 767
 768         if (events & VMXNET3_ECR_DEBUG)
 769                 PMD_INIT_LOG(ERR, "Debug event generated by device.");
 770
 771 }
 772 #endif
 773
 774 static struct rte_driver rte_vmxnet3_driver = {
 775         .type = PMD_PDEV,
 776         .init = rte_vmxnet3_pmd_init,
 777 };
 778
 779 PMD_REGISTER_DRIVER(rte_vmxnet3_driver);