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
  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 eth_driver *eth_drv,
  73                 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         rte_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(__attribute__((unused)) struct eth_driver *eth_drv,
 185                      struct rte_eth_dev *eth_dev)
 186 {
 187         struct rte_pci_device *pci_dev;
 188         struct vmxnet3_hw *hw =
 189                 VMXNET3_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
 190         uint32_t mac_hi, mac_lo, ver;
 191
 192         PMD_INIT_FUNC_TRACE();
 193
 194         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
 195         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
 196         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
 197         pci_dev = eth_dev->pci_dev;
 198
 199         /*
 200         * for secondary processes, we don't initialise any further as primary
 201         * has already done this work.
 202         */
 203         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 204                 return 0;
 205
 206         /* Vendor and Device ID need to be set before init of shared code */
 207         hw->device_id = pci_dev->id.device_id;
 208         hw->vendor_id = pci_dev->id.vendor_id;
 209         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
 210         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
 211
 212         hw->num_rx_queues = 1;
 213         hw->num_tx_queues = 1;
 214         hw->cur_mtu = ETHER_MTU;
 215         hw->bufs_per_pkt = 1;
 216
 217         /* Check h/w version compatibility with driver. */
 218     ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
 219     PMD_INIT_LOG(DEBUG, "Harware version : %d\n", ver);
 220     if (ver & 0x1)
 221         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
 222     else {
 223         PMD_INIT_LOG(ERR, "Uncompatiable h/w version, should be 0x1\n");
 224         return -EIO;
 225     }
 226
 227     /* Check UPT version compatibility with driver. */
 228     ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
 229     PMD_INIT_LOG(DEBUG, "UPT harware version : %d\n", ver);
 230     if (ver & 0x1)
 231         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
 232     else {
 233         PMD_INIT_LOG(ERR, "Incompatiable UPT version.\n");
 234         return -EIO;
 235     }
 236
 237         /* Getting MAC Address */
 238         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
 239         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
 240         memcpy(hw->perm_addr  , &mac_lo, 4);
 241         memcpy(hw->perm_addr+4, &mac_hi, 2);
 242
 243         /* Allocate memory for storing MAC addresses */
 244         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
 245                         VMXNET3_MAX_MAC_ADDRS, 0);
 246         if (eth_dev->data->mac_addrs == NULL) {
 247                 PMD_INIT_LOG(ERR,
 248                         "Failed to allocate %d bytes needed to store MAC addresses",
 249                         ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
 250                 return -ENOMEM;
 251         }
 252         /* Copy the permanent MAC address */
 253         ether_addr_copy((struct ether_addr *) hw->perm_addr,
 254                         &eth_dev->data->mac_addrs[0]);
 255
 256         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x \n",
 257                        hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 258                        hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 259
 260         /* Put device in Quiesce Mode */
 261         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 262
 263         return 0;
 264 }
 265
 266 static struct eth_driver rte_vmxnet3_pmd = {
 267         {
 268                 .name = "rte_vmxnet3_pmd",
 269                 .id_table = pci_id_vmxnet3_map,
 270 #ifdef RTE_EAL_UNBIND_PORTS
 271                 .drv_flags = RTE_PCI_DRV_NEED_IGB_UIO,
 272 #endif
 273         },
 274         .eth_dev_init = eth_vmxnet3_dev_init,
 275         .dev_private_size = sizeof(struct vmxnet3_adapter),
 276 };
 277
 278 /*
 279  * Driver initialization routine.
 280  * Invoked once at EAL init time.
 281  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
 282  */
 283 int
 284 rte_vmxnet3_pmd_init(void)
 285 {
 286         PMD_INIT_FUNC_TRACE();
 287
 288         rte_eth_driver_register(&rte_vmxnet3_pmd);
 289         return 0;
 290 }
 291
 292 static int
 293 vmxnet3_dev_configure(struct rte_eth_dev *dev)
 294 {
 295         const struct rte_memzone *mz;
 296         struct vmxnet3_hw *hw =
 297                         VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 298         size_t size;
 299
 300         PMD_INIT_FUNC_TRACE();
 301
 302         if (dev->data->nb_rx_queues > UINT8_MAX ||
 303                         dev->data->nb_tx_queues > UINT8_MAX)
 304                 return (-EINVAL);
 305
 306         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
 307                   dev->data->nb_tx_queues * sizeof (struct Vmxnet3_RxQueueDesc);
 308
 309         if (size > UINT16_MAX)
 310                 return (-EINVAL);
 311
 312         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
 313         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
 314
 315         /*
 316          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
 317          * on current socket
 318          */
 319         mz = gpa_zone_reserve(dev, sizeof (struct Vmxnet3_DriverShared),
 320                 "shared", rte_socket_id(), 8);
 321
 322         if (mz == NULL) {
 323                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone\n");
 324                 return (-ENOMEM);
 325         }
 326         memset(mz->addr, 0, mz->len);
 327
 328         hw->shared = mz->addr;
 329         hw->sharedPA = mz->phys_addr;
 330
 331         /*
 332         * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
 333         * on current socket
 334         */
 335         mz = gpa_zone_reserve(dev, size, "queuedesc",
 336                                         rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
 337         if (mz == NULL) {
 338                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone\n");
 339                 return (-ENOMEM);
 340         }
 341         memset(mz->addr, 0, mz->len);
 342
 343         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
 344         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
 345
 346         hw->queueDescPA = mz->phys_addr;
 347         hw->queue_desc_len = (uint16_t)size;
 348
 349         if(dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 350
 351                 /* Allocate memory structure for UPT1_RSSConf and configure */
 352                 mz = gpa_zone_reserve(dev, sizeof (struct VMXNET3_RSSConf), "rss_conf",
 353                                 rte_socket_id(), CACHE_LINE_SIZE);
 354                 if (mz == NULL) {
 355                         PMD_INIT_LOG(ERR, "ERROR: Creating rss_conf structure zone\n");
 356                         return (-ENOMEM);
 357                 }
 358                 memset(mz->addr, 0, mz->len);
 359
 360                 hw->rss_conf = mz->addr;
 361                 hw->rss_confPA = mz->phys_addr;
 362         }
 363
 364         return 0;
 365 }
 366
 367 static int
 368 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 369 {
 370         struct rte_eth_conf port_conf = dev->data->dev_conf;
 371         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 372         Vmxnet3_DriverShared *shared = hw->shared;
 373         Vmxnet3_DSDevRead *devRead = &shared->devRead;
 374         uint32_t *mac_ptr;
 375         uint32_t val, i;
 376         int ret;
 377
 378         shared->magic = VMXNET3_REV1_MAGIC;
 379         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
 380
 381         /* Setting up Guest OS information */
 382         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
 383                                                                                         VMXNET3_GOS_BITS_32 :
 384                                                                                         VMXNET3_GOS_BITS_64;
 385         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
 386         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
 387         devRead->misc.driverInfo.uptVerSpt     = 1;
 388
 389         devRead->misc.queueDescPA  = hw->queueDescPA;
 390         devRead->misc.queueDescLen = hw->queue_desc_len;
 391         devRead->misc.mtu          = hw->cur_mtu;
 392         devRead->misc.numTxQueues  = hw->num_tx_queues;
 393         devRead->misc.numRxQueues  = hw->num_rx_queues;
 394
 395         /*
 396         * Set number of interrupts to 1
 397         * PMD disables all the interrupts but this is MUST to activate device
 398         * It needs at least one interrupt for link events to handle
 399         * So we'll disable it later after device activation if needed
 400         */
 401         devRead->intrConf.numIntrs = 1;
 402         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 403
 404         for (i = 0; i < hw->num_tx_queues; i++) {
 405                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
 406                 vmxnet3_tx_queue_t *txq   = dev->data->tx_queues[i];
 407
 408                 tqd->ctrl.txNumDeferred  = 0;
 409                 tqd->ctrl.txThreshold    = 1;
 410                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
 411                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
 412
 413                 tqd->conf.txRingSize   = txq->cmd_ring.size;
 414                 tqd->conf.compRingSize = txq->comp_ring.size;
 415                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
 416                 tqd->status.stopped    = TRUE;
 417                 tqd->status.error      = 0;
 418                 memset(&tqd->stats, 0, sizeof(tqd->stats));
 419         }
 420
 421         for (i = 0; i < hw->num_rx_queues; i++) {
 422                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
 423                 vmxnet3_rx_queue_t *rxq    = dev->data->rx_queues[i];
 424
 425                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
 426                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
 427                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
 428
 429                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
 430                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
 431                 rqd->conf.compRingSize    = rxq->comp_ring.size;
 432                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
 433                 rqd->status.stopped       = TRUE;
 434                 rqd->status.error         = 0;
 435                 memset(&rqd->stats, 0, sizeof(rqd->stats));
 436         }
 437
 438         /* RxMode set to 0 of VMXNET3_RXM_xxx */
 439         devRead->rxFilterConf.rxMode = 0;
 440
 441         /* Setting up feature flags */
 442         if(dev->data->dev_conf.rxmode.hw_ip_checksum) {
 443                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 444         }
 445
 446         if(dev->data->dev_conf.rxmode.hw_vlan_strip) {
 447                 devRead->misc.uptFeatures |= VMXNET3_F_RXVLAN;
 448         }
 449
 450         if(port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 451                 ret = vmxnet3_rss_configure(dev);
 452                 if(ret != VMXNET3_SUCCESS) {
 453                         return ret;
 454                 }
 455                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
 456                 devRead->rssConfDesc.confVer = 1;
 457                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
 458                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
 459         }
 460
 461         if(dev->data->dev_conf.rxmode.hw_vlan_filter) {
 462                 ret = vmxnet3_vlan_configure(dev);
 463                 if(ret != VMXNET3_SUCCESS) {
 464                         return ret;
 465                 }
 466         }
 467
 468         PMD_INIT_LOG(DEBUG, "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x \n",
 469                                         hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 470                                         hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 471
 472         /* Write MAC Address back to device */
 473         mac_ptr = (uint32_t *)hw->perm_addr;
 474         val = *mac_ptr;
 475         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
 476
 477         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
 478         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
 479
 480         return VMXNET3_SUCCESS;
 481 }
 482
 483 /*
 484  * Configure device link speed and setup link.
 485  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
 486  * It returns 0 on success.
 487  */
 488 static int
 489 vmxnet3_dev_start(struct rte_eth_dev *dev)
 490 {
 491         int status, ret;
 492         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 493
 494         PMD_INIT_FUNC_TRACE();
 495
 496         ret = vmxnet3_setup_driver_shared(dev);
 497         if(ret != VMXNET3_SUCCESS) {
 498                 return ret;
 499         }
 500
 501         /* Exchange shared data with device */
 502         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO(
 503                               hw->sharedPA));
 504     VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI(
 505                                                   hw->sharedPA));
 506
 507     /* Activate device by register write */
 508         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
 509         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 510
 511         if (status != 0) {
 512                 PMD_INIT_LOG(ERR, "Device activation in %s(): UNSUCCESSFUL\n", __func__);
 513                 return -1;
 514         }
 515
 516         /* Disable interrupts */
 517         vmxnet3_disable_intr(hw);
 518
 519         /*
 520          * Load RX queues with blank mbufs and update next2fill index for device
 521          * Update RxMode of the device
 522          */
 523         ret = vmxnet3_dev_rxtx_init(dev);
 524         if(ret != VMXNET3_SUCCESS) {
 525                 PMD_INIT_LOG(ERR, "Device receive init in %s: UNSUCCESSFUL\n", __func__);
 526                 return ret;
 527         }
 528
 529         /* Setting proper Rx Mode and issue Rx Mode Update command */
 530         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_ALL_MULTI, 1);
 531
 532         /*
 533          * Don't need to handle events for now
 534          */
 535 #if PROCESS_SYS_EVENTS == 1
 536         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
 537         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X\n\n", events);
 538         vmxnet3_process_events(hw);
 539 #endif
 540         return status;
 541 }
 542
 543 /*
 544  * Stop device: disable rx and tx functions to allow for reconfiguring.
 545  */
 546 static void
 547 vmxnet3_dev_stop(struct rte_eth_dev *dev)
 548 {
 549         struct rte_eth_link link;
 550         struct vmxnet3_hw *hw =
 551                 VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 552
 553         PMD_INIT_FUNC_TRACE();
 554
 555         if(hw->adapter_stopped == TRUE) {
 556                 PMD_INIT_LOG(DEBUG, "Device already closed.\n");
 557                 return;
 558         }
 559
 560         /* disable interrupts */
 561         vmxnet3_disable_intr(hw);
 562
 563         /* quiesce the device first */
 564         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 565         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
 566         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
 567
 568         /* reset the device */
 569         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
 570         PMD_INIT_LOG(DEBUG, "Device reset.\n");
 571         hw->adapter_stopped = FALSE;
 572
 573         vmxnet3_dev_clear_queues(dev);
 574
 575         /* Clear recorded link status */
 576         memset(&link, 0, sizeof(link));
 577         rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 578 }
 579
 580 /*
 581  * Reset and stop device.
 582  */
 583 static void
 584 vmxnet3_dev_close(struct rte_eth_dev *dev)
 585 {
 586         struct vmxnet3_hw *hw =
 587                 VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 588
 589         PMD_INIT_FUNC_TRACE();
 590
 591         vmxnet3_dev_stop(dev);
 592         hw->adapter_stopped = TRUE;
 593
 594 }
 595
 596 static void
 597 vmxnet3_dev_stats_get( struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 598 {
 599         unsigned int i;
 600         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 601
 602         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 603
 604         stats->opackets = 0;
 605         stats->obytes = 0;
 606         stats->oerrors = 0;
 607         stats->ipackets = 0;
 608         stats->ibytes = 0;
 609         stats->rx_nombuf = 0;
 610         stats->ierrors = 0;
 611         stats->imcasts  = 0;
 612         stats->fdirmatch = 0;
 613         stats->fdirmiss = 0;
 614
 615         for (i = 0; i < hw->num_tx_queues; i++) {
 616                 stats->opackets += hw->tqd_start[i].stats.ucastPktsTxOK +
 617                                 hw->tqd_start[i].stats.mcastPktsTxOK +
 618                                 hw->tqd_start[i].stats.bcastPktsTxOK;
 619                 stats->obytes   += hw->tqd_start[i].stats.ucastBytesTxOK +
 620                                 hw->tqd_start[i].stats.mcastBytesTxOK +
 621                                 hw->tqd_start[i].stats.bcastBytesTxOK;
 622                 stats->oerrors  += hw->tqd_start[i].stats.pktsTxError +
 623                                 hw->tqd_start[i].stats.pktsTxDiscard;
 624         }
 625
 626         for (i = 0; i < hw->num_rx_queues; i++) {
 627                 stats->ipackets  += hw->rqd_start[i].stats.ucastPktsRxOK +
 628                                 hw->rqd_start[i].stats.mcastPktsRxOK +
 629                                 hw->rqd_start[i].stats.bcastPktsRxOK;
 630                 stats->ibytes    += hw->rqd_start[i].stats.ucastBytesRxOK +
 631                                 hw->rqd_start[i].stats.mcastBytesRxOK +
 632                                 hw->rqd_start[i].stats.bcastBytesRxOK;
 633                 stats->rx_nombuf += hw->rqd_start[i].stats.pktsRxOutOfBuf;
 634                 stats->ierrors   += hw->rqd_start[i].stats.pktsRxError;
 635         }
 636
 637 }
 638
 639 static void
 640 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 641 {
 642         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
 643         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
 644         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
 645         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
 646         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
 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 = VMXNET3_DEV_PRIVATE_TO_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()\n", __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         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 = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 696         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 697 }
 698
 699 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 700 static void
 701 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 702 {
 703         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 704         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 705 }
 706
 707 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 708 static void
 709 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
 710 {
 711         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 712         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 713 }
 714
 715 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 716 static void
 717 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 718 {
 719         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 720         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 721 }
 722
 723 #if PROCESS_SYS_EVENTS == 1
 724 static void
 725 vmxnet3_process_events(struct vmxnet3_hw *hw)
 726 {
 727         uint32_t events = hw->shared->ecr;
 728         if (!events){
 729                 PMD_INIT_LOG(ERR, "No events to process in %s()\n", __func__);
 730                 return;
 731         }
 732
 733         /*
 734         * ECR bits when written with 1b are cleared. Hence write
 735         * events back to ECR so that the bits which were set will be reset.
 736         */
 737         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
 738
 739         /* Check if link state has changed */
 740    if (events & VMXNET3_ECR_LINK){
 741            PMD_INIT_LOG(ERR, "Process events in %s(): VMXNET3_ECR_LINK event\n", __func__);
 742    }
 743
 744         /* Check if there is an error on xmit/recv queues */
 745         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
 746                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
 747
 748                 if (hw->tqd_start->status.stopped)
 749                         PMD_INIT_LOG(ERR, "tq error 0x%x\n",
 750                      hw->tqd_start->status.error);
 751
 752                 if (hw->rqd_start->status.stopped)
 753                         PMD_INIT_LOG(ERR, "rq error 0x%x\n",
 754                      hw->rqd_start->status.error);
 755
 756       /* Reset the device */
 757       /* Have to reset the device */
 758         }
 759
 760         if (events & VMXNET3_ECR_DIC)
 761                 PMD_INIT_LOG(ERR, "Device implementation change event.\n");
 762
 763         if (events & VMXNET3_ECR_DEBUG)
 764                 PMD_INIT_LOG(ERR, "Debug event generated by device.\n");
 765
 766 }
 767 #endif