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
 159 static int
 160 vmxnet3_dev_atomic_read_link_status(struct rte_eth_dev *dev,
 161                                     struct rte_eth_link *link)
 162 {
 163         struct rte_eth_link *dst = link;
 164         struct rte_eth_link *src = &(dev->data->dev_link);
 165
 166         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 167                                 *(uint64_t *)src) == 0)
 168                 return -1;
 169
 170         return 0;
 171 }
 172
 173 /**
 174  * Atomically writes the link status information into global
 175  * structure rte_eth_dev.
 176  *
 177  * @param dev
 178  *   - Pointer to the structure rte_eth_dev to write to.
 179  *   - Pointer to the buffer to be saved with the link status.
 180  *
 181  * @return
 182  *   - On success, zero.
 183  *   - On failure, negative value.
 184  */
 185 static int
 186 vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
 187                                      struct rte_eth_link *link)
 188 {
 189         struct rte_eth_link *dst = &(dev->data->dev_link);
 190         struct rte_eth_link *src = link;
 191
 192         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 193                                         *(uint64_t *)src) == 0)
 194                 return -1;
 195
 196         return 0;
 197 }
 198
 199 /*
 200  * This function is based on vmxnet3_disable_intr()
 201  */
 202 static void
 203 vmxnet3_disable_intr(struct vmxnet3_hw *hw)
 204 {
 205         int i;
 206
 207         PMD_INIT_FUNC_TRACE();
 208
 209         hw->shared->devRead.intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 210         for (i = 0; i < VMXNET3_MAX_INTRS; i++)
 211                         VMXNET3_WRITE_BAR0_REG(hw, VMXNET3_REG_IMR + i * 8, 1);
 212 }
 213
 214 /*
 215  * It returns 0 on success.
 216  */
 217 static int
 218 eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
 219 {
 220         struct rte_pci_device *pci_dev;
 221         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
 222         uint32_t mac_hi, mac_lo, ver;
 223
 224         PMD_INIT_FUNC_TRACE();
 225
 226         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
 227         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
 228         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
 229         pci_dev = eth_dev->pci_dev;
 230
 231         /*
 232          * for secondary processes, we don't initialize any further as primary
 233          * has already done this work.
 234          */
 235         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 236                 return 0;
 237
 238         rte_eth_copy_pci_info(eth_dev, pci_dev);
 239
 240         /* Vendor and Device ID need to be set before init of shared code */
 241         hw->device_id = pci_dev->id.device_id;
 242         hw->vendor_id = pci_dev->id.vendor_id;
 243         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
 244         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
 245
 246         hw->num_rx_queues = 1;
 247         hw->num_tx_queues = 1;
 248         hw->bufs_per_pkt = 1;
 249
 250         /* Check h/w version compatibility with driver. */
 251         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
 252         PMD_INIT_LOG(DEBUG, "Hardware version : %d", ver);
 253         if (ver & 0x1)
 254                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
 255         else {
 256                 PMD_INIT_LOG(ERR, "Incompatible h/w version, should be 0x1");
 257                 return -EIO;
 258         }
 259
 260         /* Check UPT version compatibility with driver. */
 261         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
 262         PMD_INIT_LOG(DEBUG, "UPT hardware version : %d", ver);
 263         if (ver & 0x1)
 264                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
 265         else {
 266                 PMD_INIT_LOG(ERR, "Incompatible UPT version.");
 267                 return -EIO;
 268         }
 269
 270         /* Getting MAC Address */
 271         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
 272         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
 273         memcpy(hw->perm_addr  , &mac_lo, 4);
 274         memcpy(hw->perm_addr+4, &mac_hi, 2);
 275
 276         /* Allocate memory for storing MAC addresses */
 277         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
 278                                                VMXNET3_MAX_MAC_ADDRS, 0);
 279         if (eth_dev->data->mac_addrs == NULL) {
 280                 PMD_INIT_LOG(ERR,
 281                              "Failed to allocate %d bytes needed to store MAC addresses",
 282                              ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
 283                 return -ENOMEM;
 284         }
 285         /* Copy the permanent MAC address */
 286         ether_addr_copy((struct ether_addr *) hw->perm_addr,
 287                         &eth_dev->data->mac_addrs[0]);
 288
 289         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 290                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 291                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 292
 293         /* Put device in Quiesce Mode */
 294         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 295
 296         return 0;
 297 }
 298
 299 static struct eth_driver rte_vmxnet3_pmd = {
 300         .pci_drv = {
 301                 .name = "rte_vmxnet3_pmd",
 302                 .id_table = pci_id_vmxnet3_map,
 303                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
 304         },
 305         .eth_dev_init = eth_vmxnet3_dev_init,
 306         .dev_private_size = sizeof(struct vmxnet3_hw),
 307 };
 308
 309 /*
 310  * Driver initialization routine.
 311  * Invoked once at EAL init time.
 312  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
 313  */
 314 static int
 315 rte_vmxnet3_pmd_init(const char *name __rte_unused, const char *param __rte_unused)
 316 {
 317         PMD_INIT_FUNC_TRACE();
 318
 319         rte_eth_driver_register(&rte_vmxnet3_pmd);
 320         return 0;
 321 }
 322
 323 static int
 324 vmxnet3_dev_configure(struct rte_eth_dev *dev)
 325 {
 326         const struct rte_memzone *mz;
 327         struct vmxnet3_hw *hw = dev->data->dev_private;
 328         size_t size;
 329
 330         PMD_INIT_FUNC_TRACE();
 331
 332         if (dev->data->nb_rx_queues > UINT8_MAX ||
 333             dev->data->nb_tx_queues > UINT8_MAX)
 334                 return -EINVAL;
 335
 336         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
 337                 dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc);
 338
 339         if (size > UINT16_MAX)
 340                 return -EINVAL;
 341
 342         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
 343         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
 344
 345         /*
 346          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
 347          * on current socket
 348          */
 349         mz = gpa_zone_reserve(dev, sizeof(struct Vmxnet3_DriverShared),
 350                               "shared", rte_socket_id(), 8);
 351
 352         if (mz == NULL) {
 353                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone");
 354                 return -ENOMEM;
 355         }
 356         memset(mz->addr, 0, mz->len);
 357
 358         hw->shared = mz->addr;
 359         hw->sharedPA = mz->phys_addr;
 360
 361         /*
 362          * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
 363          * on current socket
 364          */
 365         mz = gpa_zone_reserve(dev, size, "queuedesc",
 366                               rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
 367         if (mz == NULL) {
 368                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone");
 369                 return -ENOMEM;
 370         }
 371         memset(mz->addr, 0, mz->len);
 372
 373         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
 374         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
 375
 376         hw->queueDescPA = mz->phys_addr;
 377         hw->queue_desc_len = (uint16_t)size;
 378
 379         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 380
 381                 /* Allocate memory structure for UPT1_RSSConf and configure */
 382                 mz = gpa_zone_reserve(dev, sizeof(struct VMXNET3_RSSConf), "rss_conf",
 383                                       rte_socket_id(), RTE_CACHE_LINE_SIZE);
 384                 if (mz == NULL) {
 385                         PMD_INIT_LOG(ERR,
 386                                      "ERROR: Creating rss_conf structure zone");
 387                         return -ENOMEM;
 388                 }
 389                 memset(mz->addr, 0, mz->len);
 390
 391                 hw->rss_conf = mz->addr;
 392                 hw->rss_confPA = mz->phys_addr;
 393         }
 394
 395         return 0;
 396 }
 397
 398 static int
 399 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 400 {
 401         struct rte_eth_conf port_conf = dev->data->dev_conf;
 402         struct vmxnet3_hw *hw = dev->data->dev_private;
 403         Vmxnet3_DriverShared *shared = hw->shared;
 404         Vmxnet3_DSDevRead *devRead = &shared->devRead;
 405         uint32_t *mac_ptr;
 406         uint32_t val, i;
 407         int ret, mask;
 408
 409         shared->magic = VMXNET3_REV1_MAGIC;
 410         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
 411
 412         /* Setting up Guest OS information */
 413         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
 414                 VMXNET3_GOS_BITS_32 :
 415                 VMXNET3_GOS_BITS_64;
 416         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
 417         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
 418         devRead->misc.driverInfo.uptVerSpt     = 1;
 419
 420         devRead->misc.mtu = rte_le_to_cpu_32(dev->data->mtu);
 421         devRead->misc.queueDescPA  = hw->queueDescPA;
 422         devRead->misc.queueDescLen = hw->queue_desc_len;
 423         devRead->misc.numTxQueues  = hw->num_tx_queues;
 424         devRead->misc.numRxQueues  = hw->num_rx_queues;
 425
 426         /*
 427          * Set number of interrupts to 1
 428          * PMD disables all the interrupts but this is MUST to activate device
 429          * It needs at least one interrupt for link events to handle
 430          * So we'll disable it later after device activation if needed
 431          */
 432         devRead->intrConf.numIntrs = 1;
 433         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 434
 435         for (i = 0; i < hw->num_tx_queues; i++) {
 436                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
 437                 vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
 438
 439                 tqd->ctrl.txNumDeferred  = 0;
 440                 tqd->ctrl.txThreshold    = 1;
 441                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
 442                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
 443                 tqd->conf.dataRingBasePA = txq->data_ring.basePA;
 444
 445                 tqd->conf.txRingSize   = txq->cmd_ring.size;
 446                 tqd->conf.compRingSize = txq->comp_ring.size;
 447                 tqd->conf.dataRingSize = txq->data_ring.size;
 448                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
 449                 tqd->status.stopped    = TRUE;
 450                 tqd->status.error      = 0;
 451                 memset(&tqd->stats, 0, sizeof(tqd->stats));
 452         }
 453
 454         for (i = 0; i < hw->num_rx_queues; i++) {
 455                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
 456                 vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
 457
 458                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
 459                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
 460                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
 461
 462                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
 463                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
 464                 rqd->conf.compRingSize    = rxq->comp_ring.size;
 465                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
 466                 rqd->status.stopped       = TRUE;
 467                 rqd->status.error         = 0;
 468                 memset(&rqd->stats, 0, sizeof(rqd->stats));
 469         }
 470
 471         /* RxMode set to 0 of VMXNET3_RXM_xxx */
 472         devRead->rxFilterConf.rxMode = 0;
 473
 474         /* Setting up feature flags */
 475         if (dev->data->dev_conf.rxmode.hw_ip_checksum)
 476                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 477
 478         if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 479                 ret = vmxnet3_rss_configure(dev);
 480                 if (ret != VMXNET3_SUCCESS)
 481                         return ret;
 482
 483                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
 484                 devRead->rssConfDesc.confVer = 1;
 485                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
 486                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
 487         }
 488
 489         mask = 0;
 490         if (dev->data->dev_conf.rxmode.hw_vlan_strip)
 491                 mask |= ETH_VLAN_STRIP_MASK;
 492
 493         if (dev->data->dev_conf.rxmode.hw_vlan_filter)
 494                 mask |= ETH_VLAN_FILTER_MASK;
 495
 496         vmxnet3_dev_vlan_offload_set_clear(dev, mask, 1);
 497
 498         PMD_INIT_LOG(DEBUG,
 499                      "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 500                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 501                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 502
 503         /* Write MAC Address back to device */
 504         mac_ptr = (uint32_t *)hw->perm_addr;
 505         val = *mac_ptr;
 506         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
 507
 508         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
 509         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
 510
 511         return VMXNET3_SUCCESS;
 512 }
 513
 514 /*
 515  * Configure device link speed and setup link.
 516  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
 517  * It returns 0 on success.
 518  */
 519 static int
 520 vmxnet3_dev_start(struct rte_eth_dev *dev)
 521 {
 522         int status, ret;
 523         struct vmxnet3_hw *hw = dev->data->dev_private;
 524
 525         PMD_INIT_FUNC_TRACE();
 526
 527         ret = vmxnet3_setup_driver_shared(dev);
 528         if (ret != VMXNET3_SUCCESS)
 529                 return ret;
 530
 531         /* Exchange shared data with device */
 532         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL,
 533                                VMXNET3_GET_ADDR_LO(hw->sharedPA));
 534         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH,
 535                                VMXNET3_GET_ADDR_HI(hw->sharedPA));
 536
 537         /* Activate device by register write */
 538         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
 539         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 540
 541         if (status != 0) {
 542                 PMD_INIT_LOG(ERR, "Device activation in %s(): UNSUCCESSFUL", __func__);
 543                 return -1;
 544         }
 545
 546         /* Disable interrupts */
 547         vmxnet3_disable_intr(hw);
 548
 549         /*
 550          * Load RX queues with blank mbufs and update next2fill index for device
 551          * Update RxMode of the device
 552          */
 553         ret = vmxnet3_dev_rxtx_init(dev);
 554         if (ret != VMXNET3_SUCCESS) {
 555                 PMD_INIT_LOG(ERR, "Device receive init in %s: UNSUCCESSFUL", __func__);
 556                 return ret;
 557         }
 558
 559         /* Setting proper Rx Mode and issue Rx Mode Update command */
 560         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_BCAST, 1);
 561
 562         /*
 563          * Don't need to handle events for now
 564          */
 565 #if PROCESS_SYS_EVENTS == 1
 566         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
 567         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X", events);
 568         vmxnet3_process_events(hw);
 569 #endif
 570         return status;
 571 }
 572
 573 /*
 574  * Stop device: disable rx and tx functions to allow for reconfiguring.
 575  */
 576 static void
 577 vmxnet3_dev_stop(struct rte_eth_dev *dev)
 578 {
 579         struct rte_eth_link link;
 580         struct vmxnet3_hw *hw = dev->data->dev_private;
 581
 582         PMD_INIT_FUNC_TRACE();
 583
 584         if (hw->adapter_stopped == TRUE) {
 585                 PMD_INIT_LOG(DEBUG, "Device already closed.");
 586                 return;
 587         }
 588
 589         /* disable interrupts */
 590         vmxnet3_disable_intr(hw);
 591
 592         /* quiesce the device first */
 593         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 594         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
 595         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
 596
 597         /* reset the device */
 598         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
 599         PMD_INIT_LOG(DEBUG, "Device reset.");
 600         hw->adapter_stopped = FALSE;
 601
 602         vmxnet3_dev_clear_queues(dev);
 603
 604         /* Clear recorded link status */
 605         memset(&link, 0, sizeof(link));
 606         vmxnet3_dev_atomic_write_link_status(dev, &link);
 607 }
 608
 609 /*
 610  * Reset and stop device.
 611  */
 612 static void
 613 vmxnet3_dev_close(struct rte_eth_dev *dev)
 614 {
 615         struct vmxnet3_hw *hw = dev->data->dev_private;
 616
 617         PMD_INIT_FUNC_TRACE();
 618
 619         vmxnet3_dev_stop(dev);
 620         hw->adapter_stopped = TRUE;
 621 }
 622
 623 static void
 624 vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 625 {
 626         unsigned int i;
 627         struct vmxnet3_hw *hw = dev->data->dev_private;
 628
 629         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 630
 631         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES);
 632         for (i = 0; i < hw->num_tx_queues; i++) {
 633                 struct UPT1_TxStats *txStats = &hw->tqd_start[i].stats;
 634
 635                 stats->q_opackets[i] = txStats->ucastPktsTxOK +
 636                         txStats->mcastPktsTxOK +
 637                         txStats->bcastPktsTxOK;
 638                 stats->q_obytes[i] = txStats->ucastBytesTxOK +
 639                         txStats->mcastBytesTxOK +
 640                         txStats->bcastBytesTxOK;
 641
 642                 stats->opackets += stats->q_opackets[i];
 643                 stats->obytes += stats->q_obytes[i];
 644                 stats->oerrors += txStats->pktsTxError +
 645                         txStats->pktsTxDiscard;
 646         }
 647
 648         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES);
 649         for (i = 0; i < hw->num_rx_queues; i++) {
 650                 struct UPT1_RxStats *rxStats = &hw->rqd_start[i].stats;
 651
 652                 stats->q_ipackets[i] = rxStats->ucastPktsRxOK +
 653                         rxStats->mcastPktsRxOK +
 654                         rxStats->bcastPktsRxOK;
 655
 656                 stats->q_ibytes[i] = rxStats->ucastBytesRxOK +
 657                         rxStats->mcastBytesRxOK +
 658                         rxStats->bcastBytesRxOK;
 659
 660                 stats->ipackets += stats->q_ipackets[i];
 661                 stats->ibytes += stats->q_ibytes[i];
 662
 663                 stats->q_errors[i] = rxStats->pktsRxError;
 664                 stats->ierrors += rxStats->pktsRxError;
 665                 stats->imcasts += rxStats->mcastPktsRxOK;
 666                 stats->rx_nombuf += rxStats->pktsRxOutOfBuf;
 667         }
 668 }
 669
 670 static void
 671 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 672 {
 673         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
 674         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
 675         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
 676         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
 677         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
 678
 679         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
 680                                                 ETH_TXQ_FLAGS_NOOFFLOADS;
 681         dev_info->flow_type_rss_offloads = VMXNET3_RSS_OFFLOAD_ALL;
 682
 683         dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
 684                 .nb_max = VMXNET3_RX_RING_MAX_SIZE,
 685                 .nb_min = VMXNET3_DEF_RX_RING_SIZE,
 686                 .nb_align = 1,
 687         };
 688
 689         dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
 690                 .nb_max = VMXNET3_TX_RING_MAX_SIZE,
 691                 .nb_min = VMXNET3_DEF_TX_RING_SIZE,
 692                 .nb_align = 1,
 693         };
 694 }
 695
 696 /* return 0 means link status changed, -1 means not changed */
 697 static int
 698 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
 699 {
 700         struct vmxnet3_hw *hw = dev->data->dev_private;
 701         struct rte_eth_link old, link;
 702         uint32_t ret;
 703
 704         if (dev->data->dev_started == 0)
 705                 return -1; /* Link status doesn't change for stopped dev */
 706
 707         memset(&link, 0, sizeof(link));
 708         vmxnet3_dev_atomic_read_link_status(dev, &old);
 709
 710         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
 711         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 712
 713         if (ret & 0x1) {
 714                 link.link_status = 1;
 715                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
 716                 link.link_speed = ETH_LINK_SPEED_10000;
 717         }
 718
 719         vmxnet3_dev_atomic_write_link_status(dev, &link);
 720
 721         return (old.link_status == link.link_status) ? -1 : 0;
 722 }
 723
 724 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
 725 static void
 726 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
 727
 728         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 729
 730         if (set)
 731                 rxConf->rxMode = rxConf->rxMode | feature;
 732         else
 733                 rxConf->rxMode = rxConf->rxMode & (~feature);
 734
 735         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
 736 }
 737
 738 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 739 static void
 740 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
 741 {
 742         struct vmxnet3_hw *hw = dev->data->dev_private;
 743         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 744
 745         memset(vf_table, 0, VMXNET3_VFT_TABLE_SIZE);
 746         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 747
 748         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 749                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 750 }
 751
 752 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 753 static void
 754 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 755 {
 756         struct vmxnet3_hw *hw = dev->data->dev_private;
 757         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 758
 759         memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 760         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 761         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 762                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 763 }
 764
 765 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 766 static void
 767 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
 768 {
 769         struct vmxnet3_hw *hw = dev->data->dev_private;
 770
 771         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 1);
 772 }
 773
 774 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 775 static void
 776 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 777 {
 778         struct vmxnet3_hw *hw = dev->data->dev_private;
 779
 780         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
 781 }
 782
 783 /* Enable/disable filter on vlan */
 784 static int
 785 vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vid, int on)
 786 {
 787         struct vmxnet3_hw *hw = dev->data->dev_private;
 788         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 789         uint32_t *vf_table = rxConf->vfTable;
 790
 791         /* save state for restore */
 792         if (on)
 793                 VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, vid);
 794         else
 795                 VMXNET3_CLEAR_VFTABLE_ENTRY(hw->shadow_vfta, vid);
 796
 797         /* don't change active filter if in promiscious mode */
 798         if (rxConf->rxMode & VMXNET3_RXM_PROMISC)
 799                 return 0;
 800
 801         /* set in hardware */
 802         if (on)
 803                 VMXNET3_SET_VFTABLE_ENTRY(vf_table, vid);
 804         else
 805                 VMXNET3_CLEAR_VFTABLE_ENTRY(vf_table, vid);
 806
 807         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 808                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 809         return 0;
 810 }
 811
 812 static void
 813 vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
 814                                    int mask, int clear)
 815 {
 816         struct vmxnet3_hw *hw = dev->data->dev_private;
 817         Vmxnet3_DSDevRead *devRead = &hw->shared->devRead;
 818         uint32_t *vf_table = devRead->rxFilterConf.vfTable;
 819
 820         if (mask & ETH_VLAN_STRIP_MASK)
 821                 devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
 822         else
 823                 devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
 824
 825         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 826                                VMXNET3_CMD_UPDATE_FEATURE);
 827
 828         if (mask & ETH_VLAN_FILTER_MASK) {
 829                 if (clear) {
 830                         memset(hw->shadow_vfta, 0,
 831                                VMXNET3_VFT_TABLE_SIZE);
 832                         /* allow untagged pkts */
 833                         VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, 0);
 834                 }
 835                 memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 836         } else {
 837                 /* allow any pkts -- no filtering */
 838                 if (clear)
 839                         memset(hw->shadow_vfta, 0xff, VMXNET3_VFT_TABLE_SIZE);
 840                 memset(vf_table, 0xff, VMXNET3_VFT_TABLE_SIZE);
 841         }
 842
 843         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 844                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 845 }
 846
 847 static void
 848 vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 849 {
 850         vmxnet3_dev_vlan_offload_set_clear(dev, mask, 0);
 851 }
 852
 853 #if PROCESS_SYS_EVENTS == 1
 854 static void
 855 vmxnet3_process_events(struct vmxnet3_hw *hw)
 856 {
 857         uint32_t events = hw->shared->ecr;
 858
 859         if (!events) {
 860                 PMD_INIT_LOG(ERR, "No events to process in %s()", __func__);
 861                 return;
 862         }
 863
 864         /*
 865          * ECR bits when written with 1b are cleared. Hence write
 866          * events back to ECR so that the bits which were set will be reset.
 867          */
 868         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
 869
 870         /* Check if link state has changed */
 871         if (events & VMXNET3_ECR_LINK)
 872                 PMD_INIT_LOG(ERR,
 873                              "Process events in %s(): VMXNET3_ECR_LINK event", __func__);
 874
 875         /* Check if there is an error on xmit/recv queues */
 876         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
 877                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
 878
 879                 if (hw->tqd_start->status.stopped)
 880                         PMD_INIT_LOG(ERR, "tq error 0x%x",
 881                                      hw->tqd_start->status.error);
 882
 883                 if (hw->rqd_start->status.stopped)
 884                         PMD_INIT_LOG(ERR, "rq error 0x%x",
 885                                      hw->rqd_start->status.error);
 886
 887                 /* Reset the device */
 888                 /* Have to reset the device */
 889         }
 890
 891         if (events & VMXNET3_ECR_DIC)
 892                 PMD_INIT_LOG(ERR, "Device implementation change event.");
 893
 894         if (events & VMXNET3_ECR_DEBUG)
 895                 PMD_INIT_LOG(ERR, "Debug event generated by device.");
 896
 897 }
 898 #endif
 899
 900 static struct rte_driver rte_vmxnet3_driver = {
 901         .type = PMD_PDEV,
 902         .init = rte_vmxnet3_pmd_init,
 903 };
 904
 905 PMD_REGISTER_DRIVER(rte_vmxnet3_driver);