drivers/net/vmxnet3/vmxnet3_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/queue.h>
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #include <stdint.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40 #include <stdarg.h>
  41 #include <fcntl.h>
  42 #include <inttypes.h>
  43 #include <rte_byteorder.h>
  44 #include <rte_common.h>
  45 #include <rte_cycles.h>
  46
  47 #include <rte_interrupts.h>
  48 #include <rte_log.h>
  49 #include <rte_debug.h>
  50 #include <rte_pci.h>
  51 #include <rte_atomic.h>
  52 #include <rte_branch_prediction.h>
  53 #include <rte_memory.h>
  54 #include <rte_memzone.h>
  55 #include <rte_eal.h>
  56 #include <rte_alarm.h>
  57 #include <rte_ether.h>
  58 #include <rte_ethdev.h>
  59 #include <rte_atomic.h>
  60 #include <rte_string_fns.h>
  61 #include <rte_malloc.h>
  62 #include <rte_dev.h>
  63
  64 #include "base/vmxnet3_defs.h"
  65
  66 #include "vmxnet3_ring.h"
  67 #include "vmxnet3_logs.h"
  68 #include "vmxnet3_ethdev.h"
  69
  70 #define PROCESS_SYS_EVENTS 0
  71
  72 static int eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev);
  73 static int eth_vmxnet3_dev_uninit(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 static int vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev,
  90                                        uint16_t vid, int on);
  91 static void vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
  92
  93 #if PROCESS_SYS_EVENTS == 1
  94 static void vmxnet3_process_events(struct vmxnet3_hw *);
  95 #endif
  96 /*
  97  * The set of PCI devices this driver supports
  98  */
  99 static const struct rte_pci_id pci_id_vmxnet3_map[] = {
 100
 101 #define RTE_PCI_DEV_ID_DECL_VMXNET3(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
 102 #include "rte_pci_dev_ids.h"
 103
 104 { .vendor_id = 0, /* sentinel */ },
 105 };
 106
 107 static const struct eth_dev_ops vmxnet3_eth_dev_ops = {
 108         .dev_configure        = vmxnet3_dev_configure,
 109         .dev_start            = vmxnet3_dev_start,
 110         .dev_stop             = vmxnet3_dev_stop,
 111         .dev_close            = vmxnet3_dev_close,
 112         .promiscuous_enable   = vmxnet3_dev_promiscuous_enable,
 113         .promiscuous_disable  = vmxnet3_dev_promiscuous_disable,
 114         .allmulticast_enable  = vmxnet3_dev_allmulticast_enable,
 115         .allmulticast_disable = vmxnet3_dev_allmulticast_disable,
 116         .link_update          = vmxnet3_dev_link_update,
 117         .stats_get            = vmxnet3_dev_stats_get,
 118         .dev_infos_get        = vmxnet3_dev_info_get,
 119         .vlan_filter_set      = vmxnet3_dev_vlan_filter_set,
 120         .vlan_offload_set     = vmxnet3_dev_vlan_offload_set,
 121         .rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
 122         .rx_queue_release     = vmxnet3_dev_rx_queue_release,
 123         .tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
 124         .tx_queue_release     = vmxnet3_dev_tx_queue_release,
 125 };
 126
 127 static const struct rte_memzone *
 128 gpa_zone_reserve(struct rte_eth_dev *dev, uint32_t size,
 129                 const char *post_string, int socket_id, uint16_t align)
 130 {
 131         char z_name[RTE_MEMZONE_NAMESIZE];
 132         const struct rte_memzone *mz;
 133
 134         snprintf(z_name, sizeof(z_name), "%s_%d_%s",
 135                                         dev->driver->pci_drv.name, dev->data->port_id, post_string);
 136
 137         mz = rte_memzone_lookup(z_name);
 138         if (mz)
 139                 return mz;
 140
 141         return rte_memzone_reserve_aligned(z_name, size,
 142                         socket_id, 0, align);
 143 }
 144
 145 /**
 146  * Atomically reads the link status information from global
 147  * structure rte_eth_dev.
 148  *
 149  * @param dev
 150  *   - Pointer to the structure rte_eth_dev to read from.
 151  *   - Pointer to the buffer to be saved with the link status.
 152  *
 153  * @return
 154  *   - On success, zero.
 155  *   - On failure, negative value.
 156  */
 157
 158 static int
 159 vmxnet3_dev_atomic_read_link_status(struct rte_eth_dev *dev,
 160                                     struct rte_eth_link *link)
 161 {
 162         struct rte_eth_link *dst = link;
 163         struct rte_eth_link *src = &(dev->data->dev_link);
 164
 165         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 166                                 *(uint64_t *)src) == 0)
 167                 return -1;
 168
 169         return 0;
 170 }
 171
 172 /**
 173  * Atomically writes the link status information into global
 174  * structure rte_eth_dev.
 175  *
 176  * @param dev
 177  *   - Pointer to the structure rte_eth_dev to write to.
 178  *   - Pointer to the buffer to be saved with the link status.
 179  *
 180  * @return
 181  *   - On success, zero.
 182  *   - On failure, negative value.
 183  */
 184 static int
 185 vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
 186                                      struct rte_eth_link *link)
 187 {
 188         struct rte_eth_link *dst = &(dev->data->dev_link);
 189         struct rte_eth_link *src = link;
 190
 191         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 192                                         *(uint64_t *)src) == 0)
 193                 return -1;
 194
 195         return 0;
 196 }
 197
 198 /*
 199  * This function is based on vmxnet3_disable_intr()
 200  */
 201 static void
 202 vmxnet3_disable_intr(struct vmxnet3_hw *hw)
 203 {
 204         int i;
 205
 206         PMD_INIT_FUNC_TRACE();
 207
 208         hw->shared->devRead.intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 209         for (i = 0; i < VMXNET3_MAX_INTRS; i++)
 210                         VMXNET3_WRITE_BAR0_REG(hw, VMXNET3_REG_IMR + i * 8, 1);
 211 }
 212
 213 /*
 214  * It returns 0 on success.
 215  */
 216 static int
 217 eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
 218 {
 219         struct rte_pci_device *pci_dev;
 220         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
 221         uint32_t mac_hi, mac_lo, ver;
 222
 223         PMD_INIT_FUNC_TRACE();
 224
 225         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
 226         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
 227         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
 228         pci_dev = eth_dev->pci_dev;
 229
 230         /*
 231          * for secondary processes, we don't initialize any further as primary
 232          * has already done this work.
 233          */
 234         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 235                 return 0;
 236
 237         rte_eth_copy_pci_info(eth_dev, pci_dev);
 238
 239         /* Vendor and Device ID need to be set before init of shared code */
 240         hw->device_id = pci_dev->id.device_id;
 241         hw->vendor_id = pci_dev->id.vendor_id;
 242         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
 243         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
 244
 245         hw->num_rx_queues = 1;
 246         hw->num_tx_queues = 1;
 247         hw->bufs_per_pkt = 1;
 248
 249         /* Check h/w version compatibility with driver. */
 250         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
 251         PMD_INIT_LOG(DEBUG, "Hardware version : %d", ver);
 252         if (ver & 0x1)
 253                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
 254         else {
 255                 PMD_INIT_LOG(ERR, "Incompatible h/w version, should be 0x1");
 256                 return -EIO;
 257         }
 258
 259         /* Check UPT version compatibility with driver. */
 260         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
 261         PMD_INIT_LOG(DEBUG, "UPT hardware version : %d", ver);
 262         if (ver & 0x1)
 263                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
 264         else {
 265                 PMD_INIT_LOG(ERR, "Incompatible UPT version.");
 266                 return -EIO;
 267         }
 268
 269         /* Getting MAC Address */
 270         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
 271         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
 272         memcpy(hw->perm_addr  , &mac_lo, 4);
 273         memcpy(hw->perm_addr+4, &mac_hi, 2);
 274
 275         /* Allocate memory for storing MAC addresses */
 276         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
 277                                                VMXNET3_MAX_MAC_ADDRS, 0);
 278         if (eth_dev->data->mac_addrs == NULL) {
 279                 PMD_INIT_LOG(ERR,
 280                              "Failed to allocate %d bytes needed to store MAC addresses",
 281                              ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
 282                 return -ENOMEM;
 283         }
 284         /* Copy the permanent MAC address */
 285         ether_addr_copy((struct ether_addr *) hw->perm_addr,
 286                         &eth_dev->data->mac_addrs[0]);
 287
 288         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 289                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 290                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 291
 292         /* Put device in Quiesce Mode */
 293         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 294
 295         /* allow untagged pkts */
 296         VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, 0);
 297
 298         return 0;
 299 }
 300
 301 static int
 302 eth_vmxnet3_dev_uninit(struct rte_eth_dev *eth_dev)
 303 {
 304         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
 305
 306         PMD_INIT_FUNC_TRACE();
 307
 308         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 309                 return 0;
 310
 311         if (hw->adapter_stopped == 0)
 312                 vmxnet3_dev_close(eth_dev);
 313
 314         eth_dev->dev_ops = NULL;
 315         eth_dev->rx_pkt_burst = NULL;
 316         eth_dev->tx_pkt_burst = NULL;
 317
 318         rte_free(eth_dev->data->mac_addrs);
 319         eth_dev->data->mac_addrs = NULL;
 320
 321         return 0;
 322 }
 323
 324 static struct eth_driver rte_vmxnet3_pmd = {
 325         .pci_drv = {
 326                 .name = "rte_vmxnet3_pmd",
 327                 .id_table = pci_id_vmxnet3_map,
 328                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_DETACHABLE,
 329         },
 330         .eth_dev_init = eth_vmxnet3_dev_init,
 331         .eth_dev_uninit = eth_vmxnet3_dev_uninit,
 332         .dev_private_size = sizeof(struct vmxnet3_hw),
 333 };
 334
 335 /*
 336  * Driver initialization routine.
 337  * Invoked once at EAL init time.
 338  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
 339  */
 340 static int
 341 rte_vmxnet3_pmd_init(const char *name __rte_unused, const char *param __rte_unused)
 342 {
 343         PMD_INIT_FUNC_TRACE();
 344
 345         rte_eth_driver_register(&rte_vmxnet3_pmd);
 346         return 0;
 347 }
 348
 349 static int
 350 vmxnet3_dev_configure(struct rte_eth_dev *dev)
 351 {
 352         const struct rte_memzone *mz;
 353         struct vmxnet3_hw *hw = dev->data->dev_private;
 354         size_t size;
 355
 356         PMD_INIT_FUNC_TRACE();
 357
 358         if (dev->data->nb_rx_queues > UINT8_MAX ||
 359             dev->data->nb_tx_queues > UINT8_MAX)
 360                 return -EINVAL;
 361
 362         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
 363                 dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc);
 364
 365         if (size > UINT16_MAX)
 366                 return -EINVAL;
 367
 368         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
 369         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
 370
 371         /*
 372          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
 373          * on current socket
 374          */
 375         mz = gpa_zone_reserve(dev, sizeof(struct Vmxnet3_DriverShared),
 376                               "shared", rte_socket_id(), 8);
 377
 378         if (mz == NULL) {
 379                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone");
 380                 return -ENOMEM;
 381         }
 382         memset(mz->addr, 0, mz->len);
 383
 384         hw->shared = mz->addr;
 385         hw->sharedPA = mz->phys_addr;
 386
 387         /*
 388          * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
 389          * on current socket
 390          */
 391         mz = gpa_zone_reserve(dev, size, "queuedesc",
 392                               rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
 393         if (mz == NULL) {
 394                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone");
 395                 return -ENOMEM;
 396         }
 397         memset(mz->addr, 0, mz->len);
 398
 399         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
 400         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
 401
 402         hw->queueDescPA = mz->phys_addr;
 403         hw->queue_desc_len = (uint16_t)size;
 404
 405         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 406
 407                 /* Allocate memory structure for UPT1_RSSConf and configure */
 408                 mz = gpa_zone_reserve(dev, sizeof(struct VMXNET3_RSSConf), "rss_conf",
 409                                       rte_socket_id(), RTE_CACHE_LINE_SIZE);
 410                 if (mz == NULL) {
 411                         PMD_INIT_LOG(ERR,
 412                                      "ERROR: Creating rss_conf structure zone");
 413                         return -ENOMEM;
 414                 }
 415                 memset(mz->addr, 0, mz->len);
 416
 417                 hw->rss_conf = mz->addr;
 418                 hw->rss_confPA = mz->phys_addr;
 419         }
 420
 421         return 0;
 422 }
 423
 424 static int
 425 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 426 {
 427         struct rte_eth_conf port_conf = dev->data->dev_conf;
 428         struct vmxnet3_hw *hw = dev->data->dev_private;
 429         uint32_t mtu = dev->data->mtu;
 430         Vmxnet3_DriverShared *shared = hw->shared;
 431         Vmxnet3_DSDevRead *devRead = &shared->devRead;
 432         uint32_t *mac_ptr;
 433         uint32_t val, i;
 434         int ret;
 435
 436         shared->magic = VMXNET3_REV1_MAGIC;
 437         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
 438
 439         /* Setting up Guest OS information */
 440         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
 441                 VMXNET3_GOS_BITS_32 :
 442                 VMXNET3_GOS_BITS_64;
 443         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
 444         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
 445         devRead->misc.driverInfo.uptVerSpt     = 1;
 446
 447         devRead->misc.mtu = rte_le_to_cpu_32(mtu);
 448         devRead->misc.queueDescPA  = hw->queueDescPA;
 449         devRead->misc.queueDescLen = hw->queue_desc_len;
 450         devRead->misc.numTxQueues  = hw->num_tx_queues;
 451         devRead->misc.numRxQueues  = hw->num_rx_queues;
 452
 453         /*
 454          * Set number of interrupts to 1
 455          * PMD disables all the interrupts but this is MUST to activate device
 456          * It needs at least one interrupt for link events to handle
 457          * So we'll disable it later after device activation if needed
 458          */
 459         devRead->intrConf.numIntrs = 1;
 460         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 461
 462         for (i = 0; i < hw->num_tx_queues; i++) {
 463                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
 464                 vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
 465
 466                 tqd->ctrl.txNumDeferred  = 0;
 467                 tqd->ctrl.txThreshold    = 1;
 468                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
 469                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
 470                 tqd->conf.dataRingBasePA = txq->data_ring.basePA;
 471
 472                 tqd->conf.txRingSize   = txq->cmd_ring.size;
 473                 tqd->conf.compRingSize = txq->comp_ring.size;
 474                 tqd->conf.dataRingSize = txq->data_ring.size;
 475                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
 476                 tqd->status.stopped    = TRUE;
 477                 tqd->status.error      = 0;
 478                 memset(&tqd->stats, 0, sizeof(tqd->stats));
 479         }
 480
 481         for (i = 0; i < hw->num_rx_queues; i++) {
 482                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
 483                 vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
 484
 485                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
 486                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
 487                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
 488
 489                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
 490                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
 491                 rqd->conf.compRingSize    = rxq->comp_ring.size;
 492                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
 493                 rqd->status.stopped       = TRUE;
 494                 rqd->status.error         = 0;
 495                 memset(&rqd->stats, 0, sizeof(rqd->stats));
 496         }
 497
 498         /* RxMode set to 0 of VMXNET3_RXM_xxx */
 499         devRead->rxFilterConf.rxMode = 0;
 500
 501         /* Setting up feature flags */
 502         if (dev->data->dev_conf.rxmode.hw_ip_checksum)
 503                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 504
 505         if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 506                 ret = vmxnet3_rss_configure(dev);
 507                 if (ret != VMXNET3_SUCCESS)
 508                         return ret;
 509
 510                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
 511                 devRead->rssConfDesc.confVer = 1;
 512                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
 513                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
 514         }
 515
 516         vmxnet3_dev_vlan_offload_set(dev,
 517                              ETH_VLAN_STRIP_MASK | ETH_VLAN_FILTER_MASK);
 518
 519         PMD_INIT_LOG(DEBUG,
 520                      "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 521                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 522                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 523
 524         /* Write MAC Address back to device */
 525         mac_ptr = (uint32_t *)hw->perm_addr;
 526         val = *mac_ptr;
 527         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
 528
 529         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
 530         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
 531
 532         return VMXNET3_SUCCESS;
 533 }
 534
 535 /*
 536  * Configure device link speed and setup link.
 537  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
 538  * It returns 0 on success.
 539  */
 540 static int
 541 vmxnet3_dev_start(struct rte_eth_dev *dev)
 542 {
 543         int status, ret;
 544         struct vmxnet3_hw *hw = dev->data->dev_private;
 545
 546         PMD_INIT_FUNC_TRACE();
 547
 548         ret = vmxnet3_setup_driver_shared(dev);
 549         if (ret != VMXNET3_SUCCESS)
 550                 return ret;
 551
 552         /* Exchange shared data with device */
 553         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL,
 554                                VMXNET3_GET_ADDR_LO(hw->sharedPA));
 555         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH,
 556                                VMXNET3_GET_ADDR_HI(hw->sharedPA));
 557
 558         /* Activate device by register write */
 559         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
 560         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 561
 562         if (status != 0) {
 563                 PMD_INIT_LOG(ERR, "Device activation: UNSUCCESSFUL");
 564                 return -1;
 565         }
 566
 567         /* Disable interrupts */
 568         vmxnet3_disable_intr(hw);
 569
 570         /*
 571          * Load RX queues with blank mbufs and update next2fill index for device
 572          * Update RxMode of the device
 573          */
 574         ret = vmxnet3_dev_rxtx_init(dev);
 575         if (ret != VMXNET3_SUCCESS) {
 576                 PMD_INIT_LOG(ERR, "Device receive init: UNSUCCESSFUL");
 577                 return ret;
 578         }
 579
 580         /* Setting proper Rx Mode and issue Rx Mode Update command */
 581         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_BCAST, 1);
 582
 583         /*
 584          * Don't need to handle events for now
 585          */
 586 #if PROCESS_SYS_EVENTS == 1
 587         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
 588         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X", events);
 589         vmxnet3_process_events(hw);
 590 #endif
 591         return status;
 592 }
 593
 594 /*
 595  * Stop device: disable rx and tx functions to allow for reconfiguring.
 596  */
 597 static void
 598 vmxnet3_dev_stop(struct rte_eth_dev *dev)
 599 {
 600         struct rte_eth_link link;
 601         struct vmxnet3_hw *hw = dev->data->dev_private;
 602
 603         PMD_INIT_FUNC_TRACE();
 604
 605         if (hw->adapter_stopped == 1) {
 606                 PMD_INIT_LOG(DEBUG, "Device already closed.");
 607                 return;
 608         }
 609
 610         /* disable interrupts */
 611         vmxnet3_disable_intr(hw);
 612
 613         /* quiesce the device first */
 614         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 615         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
 616         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
 617
 618         /* reset the device */
 619         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
 620         PMD_INIT_LOG(DEBUG, "Device reset.");
 621         hw->adapter_stopped = 0;
 622
 623         vmxnet3_dev_clear_queues(dev);
 624
 625         /* Clear recorded link status */
 626         memset(&link, 0, sizeof(link));
 627         vmxnet3_dev_atomic_write_link_status(dev, &link);
 628 }
 629
 630 /*
 631  * Reset and stop device.
 632  */
 633 static void
 634 vmxnet3_dev_close(struct rte_eth_dev *dev)
 635 {
 636         struct vmxnet3_hw *hw = dev->data->dev_private;
 637
 638         PMD_INIT_FUNC_TRACE();
 639
 640         vmxnet3_dev_stop(dev);
 641         hw->adapter_stopped = 1;
 642 }
 643
 644 static void
 645 vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 646 {
 647         unsigned int i;
 648         struct vmxnet3_hw *hw = dev->data->dev_private;
 649
 650         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 651
 652         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES);
 653         for (i = 0; i < hw->num_tx_queues; i++) {
 654                 struct UPT1_TxStats *txStats = &hw->tqd_start[i].stats;
 655
 656                 stats->q_opackets[i] = txStats->ucastPktsTxOK +
 657                         txStats->mcastPktsTxOK +
 658                         txStats->bcastPktsTxOK;
 659                 stats->q_obytes[i] = txStats->ucastBytesTxOK +
 660                         txStats->mcastBytesTxOK +
 661                         txStats->bcastBytesTxOK;
 662
 663                 stats->opackets += stats->q_opackets[i];
 664                 stats->obytes += stats->q_obytes[i];
 665                 stats->oerrors += txStats->pktsTxError +
 666                         txStats->pktsTxDiscard;
 667         }
 668
 669         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES);
 670         for (i = 0; i < hw->num_rx_queues; i++) {
 671                 struct UPT1_RxStats *rxStats = &hw->rqd_start[i].stats;
 672
 673                 stats->q_ipackets[i] = rxStats->ucastPktsRxOK +
 674                         rxStats->mcastPktsRxOK +
 675                         rxStats->bcastPktsRxOK;
 676
 677                 stats->q_ibytes[i] = rxStats->ucastBytesRxOK +
 678                         rxStats->mcastBytesRxOK +
 679                         rxStats->bcastBytesRxOK;
 680
 681                 stats->ipackets += stats->q_ipackets[i];
 682                 stats->ibytes += stats->q_ibytes[i];
 683
 684                 stats->q_errors[i] = rxStats->pktsRxError;
 685                 stats->ierrors += rxStats->pktsRxError;
 686                 stats->imcasts += rxStats->mcastPktsRxOK;
 687                 stats->rx_nombuf += rxStats->pktsRxOutOfBuf;
 688         }
 689 }
 690
 691 static void
 692 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev,
 693                      struct rte_eth_dev_info *dev_info)
 694 {
 695         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
 696         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
 697         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
 698         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
 699         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
 700
 701         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
 702                                                 ETH_TXQ_FLAGS_NOOFFLOADS;
 703         dev_info->flow_type_rss_offloads = VMXNET3_RSS_OFFLOAD_ALL;
 704
 705         dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
 706                 .nb_max = VMXNET3_RX_RING_MAX_SIZE,
 707                 .nb_min = VMXNET3_DEF_RX_RING_SIZE,
 708                 .nb_align = 1,
 709         };
 710
 711         dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
 712                 .nb_max = VMXNET3_TX_RING_MAX_SIZE,
 713                 .nb_min = VMXNET3_DEF_TX_RING_SIZE,
 714                 .nb_align = 1,
 715         };
 716
 717         dev_info->rx_offload_capa =
 718                 DEV_RX_OFFLOAD_VLAN_STRIP |
 719                 DEV_RX_OFFLOAD_UDP_CKSUM |
 720                 DEV_RX_OFFLOAD_TCP_CKSUM;
 721
 722         dev_info->tx_offload_capa =
 723                 DEV_TX_OFFLOAD_VLAN_INSERT |
 724                 DEV_TX_OFFLOAD_TCP_CKSUM |
 725                 DEV_TX_OFFLOAD_UDP_CKSUM |
 726                 DEV_TX_OFFLOAD_TCP_TSO;
 727 }
 728
 729 /* return 0 means link status changed, -1 means not changed */
 730 static int
 731 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
 732 {
 733         struct vmxnet3_hw *hw = dev->data->dev_private;
 734         struct rte_eth_link old, link;
 735         uint32_t ret;
 736
 737         if (dev->data->dev_started == 0)
 738                 return -1; /* Link status doesn't change for stopped dev */
 739
 740         memset(&link, 0, sizeof(link));
 741         vmxnet3_dev_atomic_read_link_status(dev, &old);
 742
 743         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
 744         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 745
 746         if (ret & 0x1) {
 747                 link.link_status = 1;
 748                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
 749                 link.link_speed = ETH_LINK_SPEED_10000;
 750         }
 751
 752         vmxnet3_dev_atomic_write_link_status(dev, &link);
 753
 754         return (old.link_status == link.link_status) ? -1 : 0;
 755 }
 756
 757 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
 758 static void
 759 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
 760
 761         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 762
 763         if (set)
 764                 rxConf->rxMode = rxConf->rxMode | feature;
 765         else
 766                 rxConf->rxMode = rxConf->rxMode & (~feature);
 767
 768         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
 769 }
 770
 771 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 772 static void
 773 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
 774 {
 775         struct vmxnet3_hw *hw = dev->data->dev_private;
 776         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 777
 778         memset(vf_table, 0, VMXNET3_VFT_TABLE_SIZE);
 779         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 780
 781         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 782                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 783 }
 784
 785 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 786 static void
 787 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 788 {
 789         struct vmxnet3_hw *hw = dev->data->dev_private;
 790         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 791
 792         memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 793         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 794         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 795                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 796 }
 797
 798 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 799 static void
 800 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
 801 {
 802         struct vmxnet3_hw *hw = dev->data->dev_private;
 803
 804         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 1);
 805 }
 806
 807 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 808 static void
 809 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 810 {
 811         struct vmxnet3_hw *hw = dev->data->dev_private;
 812
 813         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
 814 }
 815
 816 /* Enable/disable filter on vlan */
 817 static int
 818 vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vid, int on)
 819 {
 820         struct vmxnet3_hw *hw = dev->data->dev_private;
 821         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 822         uint32_t *vf_table = rxConf->vfTable;
 823
 824         /* save state for restore */
 825         if (on)
 826                 VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, vid);
 827         else
 828                 VMXNET3_CLEAR_VFTABLE_ENTRY(hw->shadow_vfta, vid);
 829
 830         /* don't change active filter if in promiscuous mode */
 831         if (rxConf->rxMode & VMXNET3_RXM_PROMISC)
 832                 return 0;
 833
 834         /* set in hardware */
 835         if (on)
 836                 VMXNET3_SET_VFTABLE_ENTRY(vf_table, vid);
 837         else
 838                 VMXNET3_CLEAR_VFTABLE_ENTRY(vf_table, vid);
 839
 840         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 841                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 842         return 0;
 843 }
 844
 845 static void
 846 vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 847 {
 848         struct vmxnet3_hw *hw = dev->data->dev_private;
 849         Vmxnet3_DSDevRead *devRead = &hw->shared->devRead;
 850         uint32_t *vf_table = devRead->rxFilterConf.vfTable;
 851
 852         if (mask & ETH_VLAN_STRIP_MASK) {
 853                 if (dev->data->dev_conf.rxmode.hw_vlan_strip)
 854                         devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
 855                 else
 856                         devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
 857
 858                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 859                                        VMXNET3_CMD_UPDATE_FEATURE);
 860         }
 861
 862         if (mask & ETH_VLAN_FILTER_MASK) {
 863                 if (dev->data->dev_conf.rxmode.hw_vlan_filter)
 864                         memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 865                 else
 866                         memset(vf_table, 0xff, VMXNET3_VFT_TABLE_SIZE);
 867
 868                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 869                                        VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 870         }
 871 }
 872
 873 #if PROCESS_SYS_EVENTS == 1
 874 static void
 875 vmxnet3_process_events(struct vmxnet3_hw *hw)
 876 {
 877         uint32_t events = hw->shared->ecr;
 878
 879         if (!events) {
 880                 PMD_INIT_LOG(ERR, "No events to process");
 881                 return;
 882         }
 883
 884         /*
 885          * ECR bits when written with 1b are cleared. Hence write
 886          * events back to ECR so that the bits which were set will be reset.
 887          */
 888         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
 889
 890         /* Check if link state has changed */
 891         if (events & VMXNET3_ECR_LINK)
 892                 PMD_INIT_LOG(ERR,
 893                              "Process events in %s(): VMXNET3_ECR_LINK event", __func__);
 894
 895         /* Check if there is an error on xmit/recv queues */
 896         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
 897                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
 898
 899                 if (hw->tqd_start->status.stopped)
 900                         PMD_INIT_LOG(ERR, "tq error 0x%x",
 901                                      hw->tqd_start->status.error);
 902
 903                 if (hw->rqd_start->status.stopped)
 904                         PMD_INIT_LOG(ERR, "rq error 0x%x",
 905                                      hw->rqd_start->status.error);
 906
 907                 /* Reset the device */
 908                 /* Have to reset the device */
 909         }
 910
 911         if (events & VMXNET3_ECR_DIC)
 912                 PMD_INIT_LOG(ERR, "Device implementation change event.");
 913
 914         if (events & VMXNET3_ECR_DEBUG)
 915                 PMD_INIT_LOG(ERR, "Debug event generated by device.");
 916
 917 }
 918 #endif
 919
 920 static struct rte_driver rte_vmxnet3_driver = {
 921         .type = PMD_PDEV,
 922         .init = rte_vmxnet3_pmd_init,
 923 };
 924
 925 PMD_REGISTER_DRIVER(rte_vmxnet3_driver);