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