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