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 vmxnet3_dev_configure(struct rte_eth_dev *dev);
  74 static int vmxnet3_dev_start(struct rte_eth_dev *dev);
  75 static void vmxnet3_dev_stop(struct rte_eth_dev *dev);
  76 static void vmxnet3_dev_close(struct rte_eth_dev *dev);
  77 static void vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set);
  78 static void vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev);
  79 static void vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev);
  80 static void vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev);
  81 static void vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev);
  82 static int vmxnet3_dev_link_update(struct rte_eth_dev *dev,
  83                                 int wait_to_complete);
  84 static void vmxnet3_dev_stats_get(struct rte_eth_dev *dev,
  85                                 struct rte_eth_stats *stats);
  86 static void vmxnet3_dev_info_get(struct rte_eth_dev *dev,
  87                                 struct rte_eth_dev_info *dev_info);
  88 static int vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev,
  89                                        uint16_t vid, int on);
  90 static void vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
  91 static void vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
  92                                                 int mask, int clear);
  93
  94 #if PROCESS_SYS_EVENTS == 1
  95 static void vmxnet3_process_events(struct vmxnet3_hw *);
  96 #endif
  97 /*
  98  * The set of PCI devices this driver supports
  99  */
 100 static const struct rte_pci_id pci_id_vmxnet3_map[] = {
 101
 102 #define RTE_PCI_DEV_ID_DECL_VMXNET3(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
 103 #include "rte_pci_dev_ids.h"
 104
 105 { .vendor_id = 0, /* sentinel */ },
 106 };
 107
 108 static const struct eth_dev_ops vmxnet3_eth_dev_ops = {
 109         .dev_configure        = vmxnet3_dev_configure,
 110         .dev_start            = vmxnet3_dev_start,
 111         .dev_stop             = vmxnet3_dev_stop,
 112         .dev_close            = vmxnet3_dev_close,
 113         .promiscuous_enable   = vmxnet3_dev_promiscuous_enable,
 114         .promiscuous_disable  = vmxnet3_dev_promiscuous_disable,
 115         .allmulticast_enable  = vmxnet3_dev_allmulticast_enable,
 116         .allmulticast_disable = vmxnet3_dev_allmulticast_disable,
 117         .link_update          = vmxnet3_dev_link_update,
 118         .stats_get            = vmxnet3_dev_stats_get,
 119         .dev_infos_get        = vmxnet3_dev_info_get,
 120         .vlan_filter_set      = vmxnet3_dev_vlan_filter_set,
 121         .vlan_offload_set     = vmxnet3_dev_vlan_offload_set,
 122         .rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
 123         .rx_queue_release     = vmxnet3_dev_rx_queue_release,
 124         .tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
 125         .tx_queue_release     = vmxnet3_dev_tx_queue_release,
 126 };
 127
 128 static const struct rte_memzone *
 129 gpa_zone_reserve(struct rte_eth_dev *dev, uint32_t size,
 130                 const char *post_string, int socket_id, uint16_t align)
 131 {
 132         char z_name[RTE_MEMZONE_NAMESIZE];
 133         const struct rte_memzone *mz;
 134
 135         snprintf(z_name, sizeof(z_name), "%s_%d_%s",
 136                                         dev->driver->pci_drv.name, dev->data->port_id, post_string);
 137
 138         mz = rte_memzone_lookup(z_name);
 139         if (mz)
 140                 return mz;
 141
 142         return rte_memzone_reserve_aligned(z_name, size,
 143                         socket_id, 0, align);
 144 }
 145
 146 /**
 147  * Atomically reads the link status information from global
 148  * structure rte_eth_dev.
 149  *
 150  * @param dev
 151  *   - Pointer to the structure rte_eth_dev to read from.
 152  *   - Pointer to the buffer to be saved with the link status.
 153  *
 154  * @return
 155  *   - On success, zero.
 156  *   - On failure, negative value.
 157  */
 158 static inline int
 159 rte_vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
 160                                 struct rte_eth_link *link)
 161 {
 162         struct rte_eth_link *dst = &(dev->data->dev_link);
 163         struct rte_eth_link *src = 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  * This function is based on vmxnet3_disable_intr()
 174  */
 175 static void
 176 vmxnet3_disable_intr(struct vmxnet3_hw *hw)
 177 {
 178         int i;
 179
 180         PMD_INIT_FUNC_TRACE();
 181
 182         hw->shared->devRead.intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 183         for (i = 0; i < VMXNET3_MAX_INTRS; i++)
 184                         VMXNET3_WRITE_BAR0_REG(hw, VMXNET3_REG_IMR + i * 8, 1);
 185 }
 186
 187 /*
 188  * It returns 0 on success.
 189  */
 190 static int
 191 eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
 192 {
 193         struct rte_pci_device *pci_dev;
 194         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
 195         uint32_t mac_hi, mac_lo, ver;
 196
 197         PMD_INIT_FUNC_TRACE();
 198
 199         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
 200         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
 201         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
 202         pci_dev = eth_dev->pci_dev;
 203
 204         /*
 205          * for secondary processes, we don't initialize any further as primary
 206          * has already done this work.
 207          */
 208         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 209                 return 0;
 210
 211         /* Vendor and Device ID need to be set before init of shared code */
 212         hw->device_id = pci_dev->id.device_id;
 213         hw->vendor_id = pci_dev->id.vendor_id;
 214         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
 215         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
 216
 217         hw->num_rx_queues = 1;
 218         hw->num_tx_queues = 1;
 219         hw->bufs_per_pkt = 1;
 220
 221         /* Check h/w version compatibility with driver. */
 222         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
 223         PMD_INIT_LOG(DEBUG, "Hardware version : %d", ver);
 224         if (ver & 0x1)
 225                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
 226         else {
 227                 PMD_INIT_LOG(ERR, "Incompatible h/w version, should be 0x1");
 228                 return -EIO;
 229         }
 230
 231         /* Check UPT version compatibility with driver. */
 232         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
 233         PMD_INIT_LOG(DEBUG, "UPT hardware version : %d", ver);
 234         if (ver & 0x1)
 235                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
 236         else {
 237                 PMD_INIT_LOG(ERR, "Incompatible UPT version.");
 238                 return -EIO;
 239         }
 240
 241         /* Getting MAC Address */
 242         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
 243         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
 244         memcpy(hw->perm_addr  , &mac_lo, 4);
 245         memcpy(hw->perm_addr+4, &mac_hi, 2);
 246
 247         /* Allocate memory for storing MAC addresses */
 248         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
 249                                                VMXNET3_MAX_MAC_ADDRS, 0);
 250         if (eth_dev->data->mac_addrs == NULL) {
 251                 PMD_INIT_LOG(ERR,
 252                              "Failed to allocate %d bytes needed to store MAC addresses",
 253                              ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
 254                 return -ENOMEM;
 255         }
 256         /* Copy the permanent MAC address */
 257         ether_addr_copy((struct ether_addr *) hw->perm_addr,
 258                         &eth_dev->data->mac_addrs[0]);
 259
 260         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 261                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 262                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 263
 264         /* Put device in Quiesce Mode */
 265         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 266
 267         return 0;
 268 }
 269
 270 static struct eth_driver rte_vmxnet3_pmd = {
 271         .pci_drv = {
 272                 .name = "rte_vmxnet3_pmd",
 273                 .id_table = pci_id_vmxnet3_map,
 274                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
 275         },
 276         .eth_dev_init = eth_vmxnet3_dev_init,
 277         .dev_private_size = sizeof(struct vmxnet3_hw),
 278 };
 279
 280 /*
 281  * Driver initialization routine.
 282  * Invoked once at EAL init time.
 283  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
 284  */
 285 static int
 286 rte_vmxnet3_pmd_init(const char *name __rte_unused, const char *param __rte_unused)
 287 {
 288         PMD_INIT_FUNC_TRACE();
 289
 290         rte_eth_driver_register(&rte_vmxnet3_pmd);
 291         return 0;
 292 }
 293
 294 static int
 295 vmxnet3_dev_configure(struct rte_eth_dev *dev)
 296 {
 297         const struct rte_memzone *mz;
 298         struct vmxnet3_hw *hw = dev->data->dev_private;
 299         size_t size;
 300
 301         PMD_INIT_FUNC_TRACE();
 302
 303         if (dev->data->nb_rx_queues > UINT8_MAX ||
 304             dev->data->nb_tx_queues > UINT8_MAX)
 305                 return -EINVAL;
 306
 307         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
 308                 dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc);
 309
 310         if (size > UINT16_MAX)
 311                 return -EINVAL;
 312
 313         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
 314         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
 315
 316         /*
 317          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
 318          * on current socket
 319          */
 320         mz = gpa_zone_reserve(dev, sizeof(struct Vmxnet3_DriverShared),
 321                               "shared", rte_socket_id(), 8);
 322
 323         if (mz == NULL) {
 324                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone");
 325                 return -ENOMEM;
 326         }
 327         memset(mz->addr, 0, mz->len);
 328
 329         hw->shared = mz->addr;
 330         hw->sharedPA = mz->phys_addr;
 331
 332         /*
 333          * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
 334          * on current socket
 335          */
 336         mz = gpa_zone_reserve(dev, size, "queuedesc",
 337                               rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
 338         if (mz == NULL) {
 339                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone");
 340                 return -ENOMEM;
 341         }
 342         memset(mz->addr, 0, mz->len);
 343
 344         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
 345         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
 346
 347         hw->queueDescPA = mz->phys_addr;
 348         hw->queue_desc_len = (uint16_t)size;
 349
 350         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 351
 352                 /* Allocate memory structure for UPT1_RSSConf and configure */
 353                 mz = gpa_zone_reserve(dev, sizeof(struct VMXNET3_RSSConf), "rss_conf",
 354                                       rte_socket_id(), RTE_CACHE_LINE_SIZE);
 355                 if (mz == NULL) {
 356                         PMD_INIT_LOG(ERR,
 357                                      "ERROR: Creating rss_conf structure zone");
 358                         return -ENOMEM;
 359                 }
 360                 memset(mz->addr, 0, mz->len);
 361
 362                 hw->rss_conf = mz->addr;
 363                 hw->rss_confPA = mz->phys_addr;
 364         }
 365
 366         return 0;
 367 }
 368
 369 static int
 370 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 371 {
 372         struct rte_eth_conf port_conf = dev->data->dev_conf;
 373         struct vmxnet3_hw *hw = dev->data->dev_private;
 374         Vmxnet3_DriverShared *shared = hw->shared;
 375         Vmxnet3_DSDevRead *devRead = &shared->devRead;
 376         uint32_t *mac_ptr;
 377         uint32_t val, i;
 378         int ret, mask;
 379
 380         shared->magic = VMXNET3_REV1_MAGIC;
 381         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
 382
 383         /* Setting up Guest OS information */
 384         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
 385                 VMXNET3_GOS_BITS_32 :
 386                 VMXNET3_GOS_BITS_64;
 387         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
 388         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
 389         devRead->misc.driverInfo.uptVerSpt     = 1;
 390
 391         devRead->misc.queueDescPA  = hw->queueDescPA;
 392         devRead->misc.queueDescLen = hw->queue_desc_len;
 393         devRead->misc.numTxQueues  = hw->num_tx_queues;
 394         devRead->misc.numRxQueues  = hw->num_rx_queues;
 395
 396         /*
 397          * Set number of interrupts to 1
 398          * PMD disables all the interrupts but this is MUST to activate device
 399          * It needs at least one interrupt for link events to handle
 400          * So we'll disable it later after device activation if needed
 401          */
 402         devRead->intrConf.numIntrs = 1;
 403         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 404
 405         for (i = 0; i < hw->num_tx_queues; i++) {
 406                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
 407                 vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
 408
 409                 tqd->ctrl.txNumDeferred  = 0;
 410                 tqd->ctrl.txThreshold    = 1;
 411                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
 412                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
 413                 tqd->conf.dataRingBasePA = txq->data_ring.basePA;
 414
 415                 tqd->conf.txRingSize   = txq->cmd_ring.size;
 416                 tqd->conf.compRingSize = txq->comp_ring.size;
 417                 tqd->conf.dataRingSize = txq->data_ring.size;
 418                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
 419                 tqd->status.stopped    = TRUE;
 420                 tqd->status.error      = 0;
 421                 memset(&tqd->stats, 0, sizeof(tqd->stats));
 422         }
 423
 424         for (i = 0; i < hw->num_rx_queues; i++) {
 425                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
 426                 vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
 427
 428                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
 429                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
 430                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
 431
 432                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
 433                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
 434                 rqd->conf.compRingSize    = rxq->comp_ring.size;
 435                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
 436                 rqd->status.stopped       = TRUE;
 437                 rqd->status.error         = 0;
 438                 memset(&rqd->stats, 0, sizeof(rqd->stats));
 439         }
 440
 441         /* RxMode set to 0 of VMXNET3_RXM_xxx */
 442         devRead->rxFilterConf.rxMode = 0;
 443
 444         /* Setting up feature flags */
 445         if (dev->data->dev_conf.rxmode.hw_ip_checksum)
 446                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 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         mask = 0;
 460         if (dev->data->dev_conf.rxmode.hw_vlan_strip)
 461                 mask |= ETH_VLAN_STRIP_MASK;
 462
 463         if (dev->data->dev_conf.rxmode.hw_vlan_filter)
 464                 mask |= ETH_VLAN_FILTER_MASK;
 465
 466         vmxnet3_dev_vlan_offload_set_clear(dev, mask, 1);
 467
 468         PMD_INIT_LOG(DEBUG,
 469                      "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 470                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 471                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 472
 473         /* Write MAC Address back to device */
 474         mac_ptr = (uint32_t *)hw->perm_addr;
 475         val = *mac_ptr;
 476         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
 477
 478         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
 479         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
 480
 481         return VMXNET3_SUCCESS;
 482 }
 483
 484 /*
 485  * Configure device link speed and setup link.
 486  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
 487  * It returns 0 on success.
 488  */
 489 static int
 490 vmxnet3_dev_start(struct rte_eth_dev *dev)
 491 {
 492         int status, ret;
 493         struct vmxnet3_hw *hw = dev->data->dev_private;
 494
 495         PMD_INIT_FUNC_TRACE();
 496
 497         ret = vmxnet3_setup_driver_shared(dev);
 498         if (ret != VMXNET3_SUCCESS)
 499                 return ret;
 500
 501         /* Exchange shared data with device */
 502         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL,
 503                                VMXNET3_GET_ADDR_LO(hw->sharedPA));
 504         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH,
 505                                VMXNET3_GET_ADDR_HI(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", __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", __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_BCAST, 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", 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 = dev->data->dev_private;
 551
 552         PMD_INIT_FUNC_TRACE();
 553
 554         if (hw->adapter_stopped == TRUE) {
 555                 PMD_INIT_LOG(DEBUG, "Device already closed.");
 556                 return;
 557         }
 558
 559         /* disable interrupts */
 560         vmxnet3_disable_intr(hw);
 561
 562         /* quiesce the device first */
 563         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 564         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
 565         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
 566
 567         /* reset the device */
 568         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
 569         PMD_INIT_LOG(DEBUG, "Device reset.");
 570         hw->adapter_stopped = FALSE;
 571
 572         vmxnet3_dev_clear_queues(dev);
 573
 574         /* Clear recorded link status */
 575         memset(&link, 0, sizeof(link));
 576         rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 577 }
 578
 579 /*
 580  * Reset and stop device.
 581  */
 582 static void
 583 vmxnet3_dev_close(struct rte_eth_dev *dev)
 584 {
 585         struct vmxnet3_hw *hw = dev->data->dev_private;
 586
 587         PMD_INIT_FUNC_TRACE();
 588
 589         vmxnet3_dev_stop(dev);
 590         hw->adapter_stopped = TRUE;
 591 }
 592
 593 static void
 594 vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 595 {
 596         unsigned int i;
 597         struct vmxnet3_hw *hw = dev->data->dev_private;
 598
 599         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 600
 601         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES);
 602         for (i = 0; i < hw->num_tx_queues; i++) {
 603                 struct UPT1_TxStats *txStats = &hw->tqd_start[i].stats;
 604
 605                 stats->q_opackets[i] = txStats->ucastPktsTxOK +
 606                         txStats->mcastPktsTxOK +
 607                         txStats->bcastPktsTxOK;
 608                 stats->q_obytes[i] = txStats->ucastBytesTxOK +
 609                         txStats->mcastBytesTxOK +
 610                         txStats->bcastBytesTxOK;
 611
 612                 stats->opackets += stats->q_opackets[i];
 613                 stats->obytes += stats->q_obytes[i];
 614                 stats->oerrors += txStats->pktsTxError +
 615                         txStats->pktsTxDiscard;
 616         }
 617
 618         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES);
 619         for (i = 0; i < hw->num_rx_queues; i++) {
 620                 struct UPT1_RxStats *rxStats = &hw->rqd_start[i].stats;
 621
 622                 stats->q_ipackets[i] = rxStats->ucastPktsRxOK +
 623                         rxStats->mcastPktsRxOK +
 624                         rxStats->bcastPktsRxOK;
 625
 626                 stats->q_ibytes[i] = rxStats->ucastBytesRxOK +
 627                         rxStats->mcastBytesRxOK +
 628                         rxStats->bcastBytesRxOK;
 629
 630                 stats->ipackets += stats->q_ipackets[i];
 631                 stats->ibytes += stats->q_ibytes[i];
 632
 633                 stats->q_errors[i] = rxStats->pktsRxError;
 634                 stats->ierrors += rxStats->pktsRxError;
 635                 stats->imcasts += rxStats->mcastPktsRxOK;
 636                 stats->rx_nombuf += rxStats->pktsRxOutOfBuf;
 637         }
 638 }
 639
 640 static void
 641 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 642 {
 643         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
 644         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
 645         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
 646         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
 647         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
 648
 649         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
 650                                                 ETH_TXQ_FLAGS_NOOFFLOADS;
 651         dev_info->flow_type_rss_offloads = VMXNET3_RSS_OFFLOAD_ALL;
 652 }
 653
 654 /* return 0 means link status changed, -1 means not changed */
 655 static int
 656 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
 657 {
 658         struct vmxnet3_hw *hw = dev->data->dev_private;
 659         struct rte_eth_link link;
 660         uint32_t ret;
 661
 662         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
 663         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 664
 665         if (!ret) {
 666                 PMD_INIT_LOG(ERR, "Link Status Negative : %s()", __func__);
 667                 return -1;
 668         }
 669
 670         if (ret & 0x1) {
 671                 link.link_status = 1;
 672                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
 673                 link.link_speed = ETH_LINK_SPEED_10000;
 674
 675                 rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 676
 677                 return 0;
 678         }
 679
 680         return -1;
 681 }
 682
 683 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
 684 static void
 685 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
 686
 687         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 688
 689         if (set)
 690                 rxConf->rxMode = rxConf->rxMode | feature;
 691         else
 692                 rxConf->rxMode = rxConf->rxMode & (~feature);
 693
 694         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
 695 }
 696
 697 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 698 static void
 699 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
 700 {
 701         struct vmxnet3_hw *hw = dev->data->dev_private;
 702         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 703
 704         memset(vf_table, 0, VMXNET3_VFT_TABLE_SIZE);
 705         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 706
 707         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 708                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 709 }
 710
 711 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 712 static void
 713 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 714 {
 715         struct vmxnet3_hw *hw = dev->data->dev_private;
 716         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 717
 718         memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 719         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 720         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 721                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 722 }
 723
 724 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 725 static void
 726 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
 727 {
 728         struct vmxnet3_hw *hw = dev->data->dev_private;
 729
 730         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 1);
 731 }
 732
 733 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 734 static void
 735 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 736 {
 737         struct vmxnet3_hw *hw = dev->data->dev_private;
 738
 739         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
 740 }
 741
 742 /* Enable/disable filter on vlan */
 743 static int
 744 vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vid, int on)
 745 {
 746         struct vmxnet3_hw *hw = dev->data->dev_private;
 747         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 748         uint32_t *vf_table = rxConf->vfTable;
 749
 750         /* save state for restore */
 751         if (on)
 752                 VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, vid);
 753         else
 754                 VMXNET3_CLEAR_VFTABLE_ENTRY(hw->shadow_vfta, vid);
 755
 756         /* don't change active filter if in promiscious mode */
 757         if (rxConf->rxMode & VMXNET3_RXM_PROMISC)
 758                 return 0;
 759
 760         /* set in hardware */
 761         if (on)
 762                 VMXNET3_SET_VFTABLE_ENTRY(vf_table, vid);
 763         else
 764                 VMXNET3_CLEAR_VFTABLE_ENTRY(vf_table, vid);
 765
 766         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 767                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 768         return 0;
 769 }
 770
 771 static void
 772 vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
 773                                    int mask, int clear)
 774 {
 775         struct vmxnet3_hw *hw = dev->data->dev_private;
 776         Vmxnet3_DSDevRead *devRead = &hw->shared->devRead;
 777         uint32_t *vf_table = devRead->rxFilterConf.vfTable;
 778
 779         if (mask & ETH_VLAN_STRIP_MASK)
 780                 devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
 781         else
 782                 devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
 783
 784         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 785                                VMXNET3_CMD_UPDATE_FEATURE);
 786
 787         if (mask & ETH_VLAN_FILTER_MASK) {
 788                 if (clear) {
 789                         memset(hw->shadow_vfta, 0,
 790                                VMXNET3_VFT_TABLE_SIZE);
 791                         /* allow untagged pkts */
 792                         VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, 0);
 793                 }
 794                 memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 795         } else {
 796                 /* allow any pkts -- no filtering */
 797                 if (clear)
 798                         memset(hw->shadow_vfta, 0xff, VMXNET3_VFT_TABLE_SIZE);
 799                 memset(vf_table, 0xff, VMXNET3_VFT_TABLE_SIZE);
 800         }
 801
 802         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 803                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 804 }
 805
 806 static void
 807 vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 808 {
 809         vmxnet3_dev_vlan_offload_set_clear(dev, mask, 0);
 810 }
 811
 812 #if PROCESS_SYS_EVENTS == 1
 813 static void
 814 vmxnet3_process_events(struct vmxnet3_hw *hw)
 815 {
 816         uint32_t events = hw->shared->ecr;
 817
 818         if (!events) {
 819                 PMD_INIT_LOG(ERR, "No events to process in %s()", __func__);
 820                 return;
 821         }
 822
 823         /*
 824          * ECR bits when written with 1b are cleared. Hence write
 825          * events back to ECR so that the bits which were set will be reset.
 826          */
 827         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
 828
 829         /* Check if link state has changed */
 830         if (events & VMXNET3_ECR_LINK)
 831                 PMD_INIT_LOG(ERR,
 832                              "Process events in %s(): VMXNET3_ECR_LINK event", __func__);
 833
 834         /* Check if there is an error on xmit/recv queues */
 835         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
 836                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
 837
 838                 if (hw->tqd_start->status.stopped)
 839                         PMD_INIT_LOG(ERR, "tq error 0x%x",
 840                                      hw->tqd_start->status.error);
 841
 842                 if (hw->rqd_start->status.stopped)
 843                         PMD_INIT_LOG(ERR, "rq error 0x%x",
 844                                      hw->rqd_start->status.error);
 845
 846                 /* Reset the device */
 847                 /* Have to reset the device */
 848         }
 849
 850         if (events & VMXNET3_ECR_DIC)
 851                 PMD_INIT_LOG(ERR, "Device implementation change event.");
 852
 853         if (events & VMXNET3_ECR_DEBUG)
 854                 PMD_INIT_LOG(ERR, "Debug event generated by device.");
 855
 856 }
 857 #endif
 858
 859 static struct rte_driver rte_vmxnet3_driver = {
 860         .type = PMD_PDEV,
 861         .init = rte_vmxnet3_pmd_init,
 862 };
 863
 864 PMD_REGISTER_DRIVER(rte_vmxnet3_driver);