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->cur_mtu = ETHER_MTU;
 220         hw->bufs_per_pkt = 1;
 221
 222         /* Check h/w version compatibility with driver. */
 223         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
 224         PMD_INIT_LOG(DEBUG, "Hardware version : %d", ver);
 225         if (ver & 0x1)
 226                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
 227         else {
 228                 PMD_INIT_LOG(ERR, "Incompatible h/w version, should be 0x1");
 229                 return -EIO;
 230         }
 231
 232         /* Check UPT version compatibility with driver. */
 233         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
 234         PMD_INIT_LOG(DEBUG, "UPT hardware version : %d", ver);
 235         if (ver & 0x1)
 236                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
 237         else {
 238                 PMD_INIT_LOG(ERR, "Incompatible UPT version.");
 239                 return -EIO;
 240         }
 241
 242         /* Getting MAC Address */
 243         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
 244         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
 245         memcpy(hw->perm_addr  , &mac_lo, 4);
 246         memcpy(hw->perm_addr+4, &mac_hi, 2);
 247
 248         /* Allocate memory for storing MAC addresses */
 249         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
 250                                                VMXNET3_MAX_MAC_ADDRS, 0);
 251         if (eth_dev->data->mac_addrs == NULL) {
 252                 PMD_INIT_LOG(ERR,
 253                              "Failed to allocate %d bytes needed to store MAC addresses",
 254                              ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
 255                 return -ENOMEM;
 256         }
 257         /* Copy the permanent MAC address */
 258         ether_addr_copy((struct ether_addr *) hw->perm_addr,
 259                         &eth_dev->data->mac_addrs[0]);
 260
 261         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 262                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 263                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 264
 265         /* Put device in Quiesce Mode */
 266         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 267
 268         return 0;
 269 }
 270
 271 static struct eth_driver rte_vmxnet3_pmd = {
 272         .pci_drv = {
 273                 .name = "rte_vmxnet3_pmd",
 274                 .id_table = pci_id_vmxnet3_map,
 275                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
 276         },
 277         .eth_dev_init = eth_vmxnet3_dev_init,
 278         .dev_private_size = sizeof(struct vmxnet3_hw),
 279 };
 280
 281 /*
 282  * Driver initialization routine.
 283  * Invoked once at EAL init time.
 284  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
 285  */
 286 static int
 287 rte_vmxnet3_pmd_init(const char *name __rte_unused, const char *param __rte_unused)
 288 {
 289         PMD_INIT_FUNC_TRACE();
 290
 291         rte_eth_driver_register(&rte_vmxnet3_pmd);
 292         return 0;
 293 }
 294
 295 static int
 296 vmxnet3_dev_configure(struct rte_eth_dev *dev)
 297 {
 298         const struct rte_memzone *mz;
 299         struct vmxnet3_hw *hw = dev->data->dev_private;
 300         size_t size;
 301
 302         PMD_INIT_FUNC_TRACE();
 303
 304         if (dev->data->nb_rx_queues > UINT8_MAX ||
 305             dev->data->nb_tx_queues > UINT8_MAX)
 306                 return -EINVAL;
 307
 308         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
 309                 dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc);
 310
 311         if (size > UINT16_MAX)
 312                 return -EINVAL;
 313
 314         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
 315         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
 316
 317         /*
 318          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
 319          * on current socket
 320          */
 321         mz = gpa_zone_reserve(dev, sizeof(struct Vmxnet3_DriverShared),
 322                               "shared", rte_socket_id(), 8);
 323
 324         if (mz == NULL) {
 325                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone");
 326                 return -ENOMEM;
 327         }
 328         memset(mz->addr, 0, mz->len);
 329
 330         hw->shared = mz->addr;
 331         hw->sharedPA = mz->phys_addr;
 332
 333         /*
 334          * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
 335          * on current socket
 336          */
 337         mz = gpa_zone_reserve(dev, size, "queuedesc",
 338                               rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
 339         if (mz == NULL) {
 340                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone");
 341                 return -ENOMEM;
 342         }
 343         memset(mz->addr, 0, mz->len);
 344
 345         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
 346         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
 347
 348         hw->queueDescPA = mz->phys_addr;
 349         hw->queue_desc_len = (uint16_t)size;
 350
 351         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 352
 353                 /* Allocate memory structure for UPT1_RSSConf and configure */
 354                 mz = gpa_zone_reserve(dev, sizeof(struct VMXNET3_RSSConf), "rss_conf",
 355                                       rte_socket_id(), RTE_CACHE_LINE_SIZE);
 356                 if (mz == NULL) {
 357                         PMD_INIT_LOG(ERR,
 358                                      "ERROR: Creating rss_conf structure zone");
 359                         return -ENOMEM;
 360                 }
 361                 memset(mz->addr, 0, mz->len);
 362
 363                 hw->rss_conf = mz->addr;
 364                 hw->rss_confPA = mz->phys_addr;
 365         }
 366
 367         return 0;
 368 }
 369
 370 static int
 371 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 372 {
 373         struct rte_eth_conf port_conf = dev->data->dev_conf;
 374         struct vmxnet3_hw *hw = dev->data->dev_private;
 375         Vmxnet3_DriverShared *shared = hw->shared;
 376         Vmxnet3_DSDevRead *devRead = &shared->devRead;
 377         uint32_t *mac_ptr;
 378         uint32_t val, i;
 379         int ret, mask;
 380
 381         shared->magic = VMXNET3_REV1_MAGIC;
 382         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
 383
 384         /* Setting up Guest OS information */
 385         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
 386                 VMXNET3_GOS_BITS_32 :
 387                 VMXNET3_GOS_BITS_64;
 388         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
 389         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
 390         devRead->misc.driverInfo.uptVerSpt     = 1;
 391
 392         devRead->misc.queueDescPA  = hw->queueDescPA;
 393         devRead->misc.queueDescLen = hw->queue_desc_len;
 394         devRead->misc.mtu          = hw->cur_mtu;
 395         devRead->misc.numTxQueues  = hw->num_tx_queues;
 396         devRead->misc.numRxQueues  = hw->num_rx_queues;
 397
 398         /*
 399          * Set number of interrupts to 1
 400          * PMD disables all the interrupts but this is MUST to activate device
 401          * It needs at least one interrupt for link events to handle
 402          * So we'll disable it later after device activation if needed
 403          */
 404         devRead->intrConf.numIntrs = 1;
 405         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 406
 407         for (i = 0; i < hw->num_tx_queues; i++) {
 408                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
 409                 vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
 410
 411                 tqd->ctrl.txNumDeferred  = 0;
 412                 tqd->ctrl.txThreshold    = 1;
 413                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
 414                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
 415                 tqd->conf.dataRingBasePA = txq->data_ring.basePA;
 416
 417                 tqd->conf.txRingSize   = txq->cmd_ring.size;
 418                 tqd->conf.compRingSize = txq->comp_ring.size;
 419                 tqd->conf.dataRingSize = txq->data_ring.size;
 420                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
 421                 tqd->status.stopped    = TRUE;
 422                 tqd->status.error      = 0;
 423                 memset(&tqd->stats, 0, sizeof(tqd->stats));
 424         }
 425
 426         for (i = 0; i < hw->num_rx_queues; i++) {
 427                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
 428                 vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
 429
 430                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
 431                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
 432                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
 433
 434                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
 435                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
 436                 rqd->conf.compRingSize    = rxq->comp_ring.size;
 437                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
 438                 rqd->status.stopped       = TRUE;
 439                 rqd->status.error         = 0;
 440                 memset(&rqd->stats, 0, sizeof(rqd->stats));
 441         }
 442
 443         /* RxMode set to 0 of VMXNET3_RXM_xxx */
 444         devRead->rxFilterConf.rxMode = 0;
 445
 446         /* Setting up feature flags */
 447         if (dev->data->dev_conf.rxmode.hw_ip_checksum)
 448                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 449
 450         if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 451                 ret = vmxnet3_rss_configure(dev);
 452                 if (ret != VMXNET3_SUCCESS)
 453                         return ret;
 454
 455                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
 456                 devRead->rssConfDesc.confVer = 1;
 457                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
 458                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
 459         }
 460
 461         mask = 0;
 462         if (dev->data->dev_conf.rxmode.hw_vlan_strip)
 463                 mask |= ETH_VLAN_STRIP_MASK;
 464
 465         if (dev->data->dev_conf.rxmode.hw_vlan_filter)
 466                 mask |= ETH_VLAN_FILTER_MASK;
 467
 468         vmxnet3_dev_vlan_offload_set_clear(dev, mask, 1);
 469
 470         PMD_INIT_LOG(DEBUG,
 471                      "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
 472                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 473                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 474
 475         /* Write MAC Address back to device */
 476         mac_ptr = (uint32_t *)hw->perm_addr;
 477         val = *mac_ptr;
 478         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
 479
 480         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
 481         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
 482
 483         return VMXNET3_SUCCESS;
 484 }
 485
 486 /*
 487  * Configure device link speed and setup link.
 488  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
 489  * It returns 0 on success.
 490  */
 491 static int
 492 vmxnet3_dev_start(struct rte_eth_dev *dev)
 493 {
 494         int status, ret;
 495         struct vmxnet3_hw *hw = dev->data->dev_private;
 496
 497         PMD_INIT_FUNC_TRACE();
 498
 499         ret = vmxnet3_setup_driver_shared(dev);
 500         if (ret != VMXNET3_SUCCESS)
 501                 return ret;
 502
 503         /* Exchange shared data with device */
 504         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL,
 505                                VMXNET3_GET_ADDR_LO(hw->sharedPA));
 506         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH,
 507                                VMXNET3_GET_ADDR_HI(hw->sharedPA));
 508
 509         /* Activate device by register write */
 510         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
 511         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 512
 513         if (status != 0) {
 514                 PMD_INIT_LOG(ERR, "Device activation in %s(): UNSUCCESSFUL", __func__);
 515                 return -1;
 516         }
 517
 518         /* Disable interrupts */
 519         vmxnet3_disable_intr(hw);
 520
 521         /*
 522          * Load RX queues with blank mbufs and update next2fill index for device
 523          * Update RxMode of the device
 524          */
 525         ret = vmxnet3_dev_rxtx_init(dev);
 526         if (ret != VMXNET3_SUCCESS) {
 527                 PMD_INIT_LOG(ERR, "Device receive init in %s: UNSUCCESSFUL", __func__);
 528                 return ret;
 529         }
 530
 531         /* Setting proper Rx Mode and issue Rx Mode Update command */
 532         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_BCAST, 1);
 533
 534         /*
 535          * Don't need to handle events for now
 536          */
 537 #if PROCESS_SYS_EVENTS == 1
 538         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
 539         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X", events);
 540         vmxnet3_process_events(hw);
 541 #endif
 542         return status;
 543 }
 544
 545 /*
 546  * Stop device: disable rx and tx functions to allow for reconfiguring.
 547  */
 548 static void
 549 vmxnet3_dev_stop(struct rte_eth_dev *dev)
 550 {
 551         struct rte_eth_link link;
 552         struct vmxnet3_hw *hw = dev->data->dev_private;
 553
 554         PMD_INIT_FUNC_TRACE();
 555
 556         if (hw->adapter_stopped == TRUE) {
 557                 PMD_INIT_LOG(DEBUG, "Device already closed.");
 558                 return;
 559         }
 560
 561         /* disable interrupts */
 562         vmxnet3_disable_intr(hw);
 563
 564         /* quiesce the device first */
 565         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 566         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
 567         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
 568
 569         /* reset the device */
 570         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
 571         PMD_INIT_LOG(DEBUG, "Device reset.");
 572         hw->adapter_stopped = FALSE;
 573
 574         vmxnet3_dev_clear_queues(dev);
 575
 576         /* Clear recorded link status */
 577         memset(&link, 0, sizeof(link));
 578         rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 579 }
 580
 581 /*
 582  * Reset and stop device.
 583  */
 584 static void
 585 vmxnet3_dev_close(struct rte_eth_dev *dev)
 586 {
 587         struct vmxnet3_hw *hw = dev->data->dev_private;
 588
 589         PMD_INIT_FUNC_TRACE();
 590
 591         vmxnet3_dev_stop(dev);
 592         hw->adapter_stopped = TRUE;
 593 }
 594
 595 static void
 596 vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 597 {
 598         unsigned int i;
 599         struct vmxnet3_hw *hw = dev->data->dev_private;
 600
 601         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 602
 603         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES);
 604         for (i = 0; i < hw->num_tx_queues; i++) {
 605                 struct UPT1_TxStats *txStats = &hw->tqd_start[i].stats;
 606
 607                 stats->q_opackets[i] = txStats->ucastPktsTxOK +
 608                         txStats->mcastPktsTxOK +
 609                         txStats->bcastPktsTxOK;
 610                 stats->q_obytes[i] = txStats->ucastBytesTxOK +
 611                         txStats->mcastBytesTxOK +
 612                         txStats->bcastBytesTxOK;
 613
 614                 stats->opackets += stats->q_opackets[i];
 615                 stats->obytes += stats->q_obytes[i];
 616                 stats->oerrors += txStats->pktsTxError +
 617                         txStats->pktsTxDiscard;
 618         }
 619
 620         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES);
 621         for (i = 0; i < hw->num_rx_queues; i++) {
 622                 struct UPT1_RxStats *rxStats = &hw->rqd_start[i].stats;
 623
 624                 stats->q_ipackets[i] = rxStats->ucastPktsRxOK +
 625                         rxStats->mcastPktsRxOK +
 626                         rxStats->bcastPktsRxOK;
 627
 628                 stats->q_ibytes[i] = rxStats->ucastBytesRxOK +
 629                         rxStats->mcastBytesRxOK +
 630                         rxStats->bcastBytesRxOK;
 631
 632                 stats->ipackets += stats->q_ipackets[i];
 633                 stats->ibytes += stats->q_ibytes[i];
 634
 635                 stats->q_errors[i] = rxStats->pktsRxError;
 636                 stats->ierrors += rxStats->pktsRxError;
 637                 stats->imcasts += rxStats->mcastPktsRxOK;
 638                 stats->rx_nombuf += rxStats->pktsRxOutOfBuf;
 639         }
 640 }
 641
 642 static void
 643 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 644 {
 645         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
 646         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
 647         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
 648         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
 649         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
 650
 651         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
 652                                                 ETH_TXQ_FLAGS_NOOFFLOADS;
 653         dev_info->flow_type_rss_offloads = VMXNET3_RSS_OFFLOAD_ALL;
 654 }
 655
 656 /* return 0 means link status changed, -1 means not changed */
 657 static int
 658 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
 659 {
 660         struct vmxnet3_hw *hw = dev->data->dev_private;
 661         struct rte_eth_link link;
 662         uint32_t ret;
 663
 664         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
 665         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 666
 667         if (!ret) {
 668                 PMD_INIT_LOG(ERR, "Link Status Negative : %s()", __func__);
 669                 return -1;
 670         }
 671
 672         if (ret & 0x1) {
 673                 link.link_status = 1;
 674                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
 675                 link.link_speed = ETH_LINK_SPEED_10000;
 676
 677                 rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 678
 679                 return 0;
 680         }
 681
 682         return -1;
 683 }
 684
 685 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
 686 static void
 687 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
 688
 689         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 690
 691         if (set)
 692                 rxConf->rxMode = rxConf->rxMode | feature;
 693         else
 694                 rxConf->rxMode = rxConf->rxMode & (~feature);
 695
 696         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
 697 }
 698
 699 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 700 static void
 701 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
 702 {
 703         struct vmxnet3_hw *hw = dev->data->dev_private;
 704         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 705
 706         memset(vf_table, 0, VMXNET3_VFT_TABLE_SIZE);
 707         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 708
 709         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 710                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 711 }
 712
 713 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 714 static void
 715 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 716 {
 717         struct vmxnet3_hw *hw = dev->data->dev_private;
 718         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
 719
 720         memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 721         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 722         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 723                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 724 }
 725
 726 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 727 static void
 728 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
 729 {
 730         struct vmxnet3_hw *hw = dev->data->dev_private;
 731
 732         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 1);
 733 }
 734
 735 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 736 static void
 737 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 738 {
 739         struct vmxnet3_hw *hw = dev->data->dev_private;
 740
 741         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
 742 }
 743
 744 /* Enable/disable filter on vlan */
 745 static int
 746 vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vid, int on)
 747 {
 748         struct vmxnet3_hw *hw = dev->data->dev_private;
 749         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 750         uint32_t *vf_table = rxConf->vfTable;
 751
 752         /* save state for restore */
 753         if (on)
 754                 VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, vid);
 755         else
 756                 VMXNET3_CLEAR_VFTABLE_ENTRY(hw->shadow_vfta, vid);
 757
 758         /* don't change active filter if in promiscious mode */
 759         if (rxConf->rxMode & VMXNET3_RXM_PROMISC)
 760                 return 0;
 761
 762         /* set in hardware */
 763         if (on)
 764                 VMXNET3_SET_VFTABLE_ENTRY(vf_table, vid);
 765         else
 766                 VMXNET3_CLEAR_VFTABLE_ENTRY(vf_table, vid);
 767
 768         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 769                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 770         return 0;
 771 }
 772
 773 static void
 774 vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
 775                                    int mask, int clear)
 776 {
 777         struct vmxnet3_hw *hw = dev->data->dev_private;
 778         Vmxnet3_DSDevRead *devRead = &hw->shared->devRead;
 779         uint32_t *vf_table = devRead->rxFilterConf.vfTable;
 780
 781         if (mask & ETH_VLAN_STRIP_MASK)
 782                 devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
 783         else
 784                 devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
 785
 786         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 787                                VMXNET3_CMD_UPDATE_FEATURE);
 788
 789         if (mask & ETH_VLAN_FILTER_MASK) {
 790                 if (clear) {
 791                         memset(hw->shadow_vfta, 0,
 792                                VMXNET3_VFT_TABLE_SIZE);
 793                         /* allow untagged pkts */
 794                         VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, 0);
 795                 }
 796                 memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
 797         } else {
 798                 /* allow any pkts -- no filtering */
 799                 if (clear)
 800                         memset(hw->shadow_vfta, 0xff, VMXNET3_VFT_TABLE_SIZE);
 801                 memset(vf_table, 0xff, VMXNET3_VFT_TABLE_SIZE);
 802         }
 803
 804         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
 805                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
 806 }
 807
 808 static void
 809 vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 810 {
 811         vmxnet3_dev_vlan_offload_set_clear(dev, mask, 0);
 812 }
 813
 814 #if PROCESS_SYS_EVENTS == 1
 815 static void
 816 vmxnet3_process_events(struct vmxnet3_hw *hw)
 817 {
 818         uint32_t events = hw->shared->ecr;
 819
 820         if (!events) {
 821                 PMD_INIT_LOG(ERR, "No events to process in %s()", __func__);
 822                 return;
 823         }
 824
 825         /*
 826          * ECR bits when written with 1b are cleared. Hence write
 827          * events back to ECR so that the bits which were set will be reset.
 828          */
 829         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
 830
 831         /* Check if link state has changed */
 832         if (events & VMXNET3_ECR_LINK)
 833                 PMD_INIT_LOG(ERR,
 834                              "Process events in %s(): VMXNET3_ECR_LINK event", __func__);
 835
 836         /* Check if there is an error on xmit/recv queues */
 837         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
 838                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
 839
 840                 if (hw->tqd_start->status.stopped)
 841                         PMD_INIT_LOG(ERR, "tq error 0x%x",
 842                                      hw->tqd_start->status.error);
 843
 844                 if (hw->rqd_start->status.stopped)
 845                         PMD_INIT_LOG(ERR, "rq error 0x%x",
 846                                      hw->rqd_start->status.error);
 847
 848                 /* Reset the device */
 849                 /* Have to reset the device */
 850         }
 851
 852         if (events & VMXNET3_ECR_DIC)
 853                 PMD_INIT_LOG(ERR, "Device implementation change event.");
 854
 855         if (events & VMXNET3_ECR_DEBUG)
 856                 PMD_INIT_LOG(ERR, "Debug event generated by device.");
 857
 858 }
 859 #endif
 860
 861 static struct rte_driver rte_vmxnet3_driver = {
 862         .type = PMD_PDEV,
 863         .init = rte_vmxnet3_pmd_init,
 864 };
 865
 866 PMD_REGISTER_DRIVER(rte_vmxnet3_driver);