lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/queue.h>
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #include <stdint.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40 #include <stdarg.h>
  41 #include <fcntl.h>
  42 #include <inttypes.h>
  43 #include <rte_byteorder.h>
  44 #include <rte_common.h>
  45 #include <rte_cycles.h>
  46
  47 #include <rte_interrupts.h>
  48 #include <rte_log.h>
  49 #include <rte_debug.h>
  50 #include <rte_pci.h>
  51 #include <rte_atomic.h>
  52 #include <rte_branch_prediction.h>
  53 #include <rte_memory.h>
  54 #include <rte_memzone.h>
  55 #include <rte_tailq.h>
  56 #include <rte_eal.h>
  57 #include <rte_alarm.h>
  58 #include <rte_ether.h>
  59 #include <rte_ethdev.h>
  60 #include <rte_atomic.h>
  61 #include <rte_string_fns.h>
  62 #include <rte_malloc.h>
  63
  64 #include "vmxnet3/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 eth_driver *eth_drv,
  73                 struct rte_eth_dev *eth_dev);
  74 static int vmxnet3_dev_configure(struct rte_eth_dev *dev);
  75 static int vmxnet3_dev_start(struct rte_eth_dev *dev);
  76 static void vmxnet3_dev_stop(struct rte_eth_dev *dev);
  77 static void vmxnet3_dev_close(struct rte_eth_dev *dev);
  78 static void vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set);
  79 static void vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev);
  80 static void vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev);
  81 static void vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev);
  82 static void vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev);
  83 static int vmxnet3_dev_link_update(struct rte_eth_dev *dev,
  84                                 int wait_to_complete);
  85 static void vmxnet3_dev_stats_get(struct rte_eth_dev *dev,
  86                                 struct rte_eth_stats *stats);
  87 static void vmxnet3_dev_info_get(struct rte_eth_dev *dev,
  88                                 struct rte_eth_dev_info *dev_info);
  89 #if PROCESS_SYS_EVENTS == 1
  90 static void vmxnet3_process_events(struct vmxnet3_hw *);
  91 #endif
  92 /*
  93  * The set of PCI devices this driver supports
  94  */
  95 static struct rte_pci_id pci_id_vmxnet3_map[] = {
  96
  97 #define RTE_PCI_DEV_ID_DECL_VMXNET3(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
  98 #include "rte_pci_dev_ids.h"
  99
 100 { .vendor_id = 0, /* sentinel */ },
 101 };
 102
 103 static struct eth_dev_ops vmxnet3_eth_dev_ops = {
 104         .dev_configure        = vmxnet3_dev_configure,
 105         .dev_start            = vmxnet3_dev_start,
 106         .dev_stop             = vmxnet3_dev_stop,
 107         .dev_close            = vmxnet3_dev_close,
 108         .promiscuous_enable   = vmxnet3_dev_promiscuous_enable,
 109         .promiscuous_disable  = vmxnet3_dev_promiscuous_disable,
 110         .allmulticast_enable  = vmxnet3_dev_allmulticast_enable,
 111         .allmulticast_disable = vmxnet3_dev_allmulticast_disable,
 112         .link_update          = vmxnet3_dev_link_update,
 113         .stats_get            = vmxnet3_dev_stats_get,
 114         .dev_infos_get        = vmxnet3_dev_info_get,
 115         .rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
 116         .rx_queue_release     = vmxnet3_dev_rx_queue_release,
 117         .tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
 118         .tx_queue_release     = vmxnet3_dev_tx_queue_release,
 119 };
 120
 121 static const struct rte_memzone *
 122 gpa_zone_reserve(struct rte_eth_dev *dev, uint32_t size,
 123                 const char *post_string, int socket_id, uint16_t align)
 124 {
 125         char z_name[RTE_MEMZONE_NAMESIZE];
 126         const struct rte_memzone *mz;
 127
 128         rte_snprintf(z_name, sizeof(z_name), "%s_%d_%s",
 129                                         dev->driver->pci_drv.name, dev->data->port_id, post_string);
 130
 131         mz = rte_memzone_lookup(z_name);
 132         if (mz)
 133                 return mz;
 134
 135         return rte_memzone_reserve_aligned(z_name, size,
 136                         socket_id, 0, align);
 137 }
 138
 139 /**
 140  * Atomically reads the link status information from global
 141  * structure rte_eth_dev.
 142  *
 143  * @param dev
 144  *   - Pointer to the structure rte_eth_dev to read from.
 145  *   - Pointer to the buffer to be saved with the link status.
 146  *
 147  * @return
 148  *   - On success, zero.
 149  *   - On failure, negative value.
 150  */
 151 static inline int
 152 rte_vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
 153                                 struct rte_eth_link *link)
 154 {
 155         struct rte_eth_link *dst = &(dev->data->dev_link);
 156         struct rte_eth_link *src = link;
 157
 158         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 159                                         *(uint64_t *)src) == 0)
 160                 return -1;
 161
 162         return 0;
 163 }
 164
 165 /*
 166  * This function is based on vmxnet3_disable_intr()
 167  */
 168 static void
 169 vmxnet3_disable_intr(struct vmxnet3_hw *hw)
 170 {
 171         int i;
 172
 173         PMD_INIT_FUNC_TRACE();
 174
 175         hw->shared->devRead.intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 176         for (i = 0; i < VMXNET3_MAX_INTRS; i++)
 177                         VMXNET3_WRITE_BAR0_REG(hw, VMXNET3_REG_IMR + i * 8, 1);
 178 }
 179
 180 /*
 181  * It returns 0 on success.
 182  */
 183 static int
 184 eth_vmxnet3_dev_init(__attribute__((unused)) struct eth_driver *eth_drv,
 185                      struct rte_eth_dev *eth_dev)
 186 {
 187         struct rte_pci_device *pci_dev;
 188         struct vmxnet3_hw *hw =
 189                 VMXNET3_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
 190         uint32_t mac_hi, mac_lo, ver;
 191
 192         PMD_INIT_FUNC_TRACE();
 193
 194         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
 195         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
 196         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
 197         pci_dev = eth_dev->pci_dev;
 198
 199         /*
 200         * for secondary processes, we don't initialise any further as primary
 201         * has already done this work.
 202         */
 203         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 204                 return 0;
 205
 206         /* Vendor and Device ID need to be set before init of shared code */
 207         hw->device_id = pci_dev->id.device_id;
 208         hw->vendor_id = pci_dev->id.vendor_id;
 209         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
 210         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
 211
 212         hw->num_rx_queues = 1;
 213         hw->num_tx_queues = 1;
 214         hw->cur_mtu = ETHER_MTU;
 215         hw->bufs_per_pkt = 1;
 216
 217         /* Check h/w version compatibility with driver. */
 218     ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
 219     PMD_INIT_LOG(DEBUG, "Harware version : %d\n", ver);
 220     if (ver & 0x1)
 221         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
 222     else {
 223         PMD_INIT_LOG(ERR, "Uncompatiable h/w version, should be 0x1\n");
 224         return -EIO;
 225     }
 226
 227     /* Check UPT version compatibility with driver. */
 228     ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
 229     PMD_INIT_LOG(DEBUG, "UPT harware version : %d\n", ver);
 230     if (ver & 0x1)
 231         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
 232     else {
 233         PMD_INIT_LOG(ERR, "Incompatiable UPT version.\n");
 234         return -EIO;
 235     }
 236
 237         /* Getting MAC Address */
 238         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
 239         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
 240         memcpy(hw->perm_addr  , &mac_lo, 4);
 241         memcpy(hw->perm_addr+4, &mac_hi, 2);
 242
 243         /* Allocate memory for storing MAC addresses */
 244         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
 245                         VMXNET3_MAX_MAC_ADDRS, 0);
 246         if (eth_dev->data->mac_addrs == NULL) {
 247                 PMD_INIT_LOG(ERR,
 248                         "Failed to allocate %d bytes needed to store MAC addresses",
 249                         ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
 250                 return -ENOMEM;
 251         }
 252         /* Copy the permanent MAC address */
 253         ether_addr_copy((struct ether_addr *) hw->perm_addr,
 254                         &eth_dev->data->mac_addrs[0]);
 255
 256         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x \n",
 257                        hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 258                        hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 259
 260         /* Put device in Quiesce Mode */
 261         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 262
 263         return 0;
 264 }
 265
 266 static struct eth_driver rte_vmxnet3_pmd = {
 267         {
 268                 .name = "rte_vmxnet3_pmd",
 269                 .id_table = pci_id_vmxnet3_map,
 270                 .drv_flags = RTE_PCI_DRV_NEED_IGB_UIO,
 271         },
 272         .eth_dev_init = eth_vmxnet3_dev_init,
 273         .dev_private_size = sizeof(struct vmxnet3_adapter),
 274 };
 275
 276 /*
 277  * Driver initialization routine.
 278  * Invoked once at EAL init time.
 279  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
 280  */
 281 int
 282 rte_vmxnet3_pmd_init(void)
 283 {
 284         PMD_INIT_FUNC_TRACE();
 285
 286         rte_eth_driver_register(&rte_vmxnet3_pmd);
 287         return 0;
 288 }
 289
 290 static int
 291 vmxnet3_dev_configure(struct rte_eth_dev *dev)
 292 {
 293         const struct rte_memzone *mz;
 294         struct vmxnet3_hw *hw =
 295                         VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 296         size_t size;
 297
 298         PMD_INIT_FUNC_TRACE();
 299
 300         if (dev->data->nb_rx_queues > UINT8_MAX ||
 301                         dev->data->nb_tx_queues > UINT8_MAX)
 302                 return (-EINVAL);
 303
 304         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
 305                   dev->data->nb_tx_queues * sizeof (struct Vmxnet3_RxQueueDesc);
 306
 307         if (size > UINT16_MAX)
 308                 return (-EINVAL);
 309
 310         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
 311         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
 312
 313         /*
 314          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
 315          * on current socket
 316          */
 317         mz = gpa_zone_reserve(dev, sizeof (struct Vmxnet3_DriverShared),
 318                 "shared", rte_socket_id(), 8);
 319
 320         if (mz == NULL) {
 321                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone\n");
 322                 return (-ENOMEM);
 323         }
 324         memset(mz->addr, 0, mz->len);
 325
 326         hw->shared = mz->addr;
 327         hw->sharedPA = mz->phys_addr;
 328
 329         /*
 330         * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
 331         * on current socket
 332         */
 333         mz = gpa_zone_reserve(dev, size, "queuedesc",
 334                                         rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
 335         if (mz == NULL) {
 336                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone\n");
 337                 return (-ENOMEM);
 338         }
 339         memset(mz->addr, 0, mz->len);
 340
 341         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
 342         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
 343
 344         hw->queueDescPA = mz->phys_addr;
 345         hw->queue_desc_len = (uint16_t)size;
 346
 347         if(dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 348
 349                 /* Allocate memory structure for UPT1_RSSConf and configure */
 350                 mz = gpa_zone_reserve(dev, sizeof (struct VMXNET3_RSSConf), "rss_conf",
 351                                 rte_socket_id(), CACHE_LINE_SIZE);
 352                 if (mz == NULL) {
 353                         PMD_INIT_LOG(ERR, "ERROR: Creating rss_conf structure zone\n");
 354                         return (-ENOMEM);
 355                 }
 356                 memset(mz->addr, 0, mz->len);
 357
 358                 hw->rss_conf = mz->addr;
 359                 hw->rss_confPA = mz->phys_addr;
 360         }
 361
 362         return 0;
 363 }
 364
 365 static int
 366 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
 367 {
 368         struct rte_eth_conf port_conf = dev->data->dev_conf;
 369         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 370         Vmxnet3_DriverShared *shared = hw->shared;
 371         Vmxnet3_DSDevRead *devRead = &shared->devRead;
 372         uint32_t *mac_ptr;
 373         uint32_t val, i;
 374         int ret;
 375
 376         shared->magic = VMXNET3_REV1_MAGIC;
 377         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
 378
 379         /* Setting up Guest OS information */
 380         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
 381                                                                                         VMXNET3_GOS_BITS_32 :
 382                                                                                         VMXNET3_GOS_BITS_64;
 383         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
 384         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
 385         devRead->misc.driverInfo.uptVerSpt     = 1;
 386
 387         devRead->misc.queueDescPA  = hw->queueDescPA;
 388         devRead->misc.queueDescLen = hw->queue_desc_len;
 389         devRead->misc.mtu          = hw->cur_mtu;
 390         devRead->misc.numTxQueues  = hw->num_tx_queues;
 391         devRead->misc.numRxQueues  = hw->num_rx_queues;
 392
 393         /*
 394         * Set number of interrupts to 1
 395         * PMD disables all the interrupts but this is MUST to activate device
 396         * It needs at least one interrupt for link events to handle
 397         * So we'll disable it later after device activation if needed
 398         */
 399         devRead->intrConf.numIntrs = 1;
 400         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
 401
 402         for (i = 0; i < hw->num_tx_queues; i++) {
 403                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
 404                 vmxnet3_tx_queue_t *txq   = dev->data->tx_queues[i];
 405
 406                 tqd->ctrl.txNumDeferred  = 0;
 407                 tqd->ctrl.txThreshold    = 1;
 408                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
 409                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
 410
 411                 tqd->conf.txRingSize   = txq->cmd_ring.size;
 412                 tqd->conf.compRingSize = txq->comp_ring.size;
 413                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
 414                 tqd->status.stopped    = TRUE;
 415                 tqd->status.error      = 0;
 416                 memset(&tqd->stats, 0, sizeof(tqd->stats));
 417         }
 418
 419         for (i = 0; i < hw->num_rx_queues; i++) {
 420                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
 421                 vmxnet3_rx_queue_t *rxq    = dev->data->rx_queues[i];
 422
 423                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
 424                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
 425                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
 426
 427                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
 428                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
 429                 rqd->conf.compRingSize    = rxq->comp_ring.size;
 430                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
 431                 rqd->status.stopped       = TRUE;
 432                 rqd->status.error         = 0;
 433                 memset(&rqd->stats, 0, sizeof(rqd->stats));
 434         }
 435
 436         /* RxMode set to 0 of VMXNET3_RXM_xxx */
 437         devRead->rxFilterConf.rxMode = 0;
 438
 439         /* Setting up feature flags */
 440         if(dev->data->dev_conf.rxmode.hw_ip_checksum) {
 441                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
 442         }
 443
 444         if(dev->data->dev_conf.rxmode.hw_vlan_strip) {
 445                 devRead->misc.uptFeatures |= VMXNET3_F_RXVLAN;
 446         }
 447
 448         if(port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
 449                 ret = vmxnet3_rss_configure(dev);
 450                 if(ret != VMXNET3_SUCCESS) {
 451                         return ret;
 452                 }
 453                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
 454                 devRead->rssConfDesc.confVer = 1;
 455                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
 456                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
 457         }
 458
 459         if(dev->data->dev_conf.rxmode.hw_vlan_filter) {
 460                 ret = vmxnet3_vlan_configure(dev);
 461                 if(ret != VMXNET3_SUCCESS) {
 462                         return ret;
 463                 }
 464         }
 465
 466         PMD_INIT_LOG(DEBUG, "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x \n",
 467                                         hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
 468                                         hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
 469
 470         /* Write MAC Address back to device */
 471         mac_ptr = (uint32_t *)hw->perm_addr;
 472         val = *mac_ptr;
 473         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
 474
 475         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
 476         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
 477
 478         return VMXNET3_SUCCESS;
 479 }
 480
 481 /*
 482  * Configure device link speed and setup link.
 483  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
 484  * It returns 0 on success.
 485  */
 486 static int
 487 vmxnet3_dev_start(struct rte_eth_dev *dev)
 488 {
 489         int status, ret;
 490         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 491
 492         PMD_INIT_FUNC_TRACE();
 493
 494         ret = vmxnet3_setup_driver_shared(dev);
 495         if(ret != VMXNET3_SUCCESS) {
 496                 return ret;
 497         }
 498
 499         /* Exchange shared data with device */
 500         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO(
 501                               hw->sharedPA));
 502     VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI(
 503                                                   hw->sharedPA));
 504
 505     /* Activate device by register write */
 506         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
 507         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 508
 509         if (status != 0) {
 510                 PMD_INIT_LOG(ERR, "Device activation in %s(): UNSUCCESSFUL\n", __func__);
 511                 return -1;
 512         }
 513
 514         /* Disable interrupts */
 515         vmxnet3_disable_intr(hw);
 516
 517         /*
 518          * Load RX queues with blank mbufs and update next2fill index for device
 519          * Update RxMode of the device
 520          */
 521         ret = vmxnet3_dev_rxtx_init(dev);
 522         if(ret != VMXNET3_SUCCESS) {
 523                 PMD_INIT_LOG(ERR, "Device receive init in %s: UNSUCCESSFUL\n", __func__);
 524                 return ret;
 525         }
 526
 527         /* Setting proper Rx Mode and issue Rx Mode Update command */
 528         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_ALL_MULTI, 1);
 529
 530         /*
 531          * Don't need to handle events for now
 532          */
 533 #if PROCESS_SYS_EVENTS == 1
 534         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
 535         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X\n\n", events);
 536         vmxnet3_process_events(hw);
 537 #endif
 538         return status;
 539 }
 540
 541 /*
 542  * Stop device: disable rx and tx functions to allow for reconfiguring.
 543  */
 544 static void
 545 vmxnet3_dev_stop(struct rte_eth_dev *dev)
 546 {
 547         struct rte_eth_link link;
 548         struct vmxnet3_hw *hw =
 549                 VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 550
 551         PMD_INIT_FUNC_TRACE();
 552
 553         if(hw->adapter_stopped == TRUE) {
 554                 PMD_INIT_LOG(DEBUG, "Device already closed.\n");
 555                 return;
 556         }
 557
 558         /* disable interrupts */
 559         vmxnet3_disable_intr(hw);
 560
 561         /* quiesce the device first */
 562         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
 563         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
 564         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
 565
 566         /* reset the device */
 567         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
 568         PMD_INIT_LOG(DEBUG, "Device reset.\n");
 569         hw->adapter_stopped = FALSE;
 570
 571         vmxnet3_dev_clear_queues(dev);
 572
 573         /* Clear recorded link status */
 574         memset(&link, 0, sizeof(link));
 575         rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 576 }
 577
 578 /*
 579  * Reset and stop device.
 580  */
 581 static void
 582 vmxnet3_dev_close(struct rte_eth_dev *dev)
 583 {
 584         struct vmxnet3_hw *hw =
 585                 VMXNET3_DEV_PRIVATE_TO_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
 594 static void
 595 vmxnet3_dev_stats_get( struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 596 {
 597         unsigned int i;
 598         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 599
 600         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 601
 602         stats->opackets = 0;
 603         stats->obytes = 0;
 604         stats->oerrors = 0;
 605         stats->ipackets = 0;
 606         stats->ibytes = 0;
 607         stats->rx_nombuf = 0;
 608         stats->ierrors = 0;
 609         stats->imcasts  = 0;
 610         stats->fdirmatch = 0;
 611         stats->fdirmiss = 0;
 612
 613         for (i = 0; i < hw->num_tx_queues; i++) {
 614                 stats->opackets += hw->tqd_start[i].stats.ucastPktsTxOK +
 615                                 hw->tqd_start[i].stats.mcastPktsTxOK +
 616                                 hw->tqd_start[i].stats.bcastPktsTxOK;
 617                 stats->obytes   += hw->tqd_start[i].stats.ucastBytesTxOK +
 618                                 hw->tqd_start[i].stats.mcastBytesTxOK +
 619                                 hw->tqd_start[i].stats.bcastBytesTxOK;
 620                 stats->oerrors  += hw->tqd_start[i].stats.pktsTxError +
 621                                 hw->tqd_start[i].stats.pktsTxDiscard;
 622         }
 623
 624         for (i = 0; i < hw->num_rx_queues; i++) {
 625                 stats->ipackets  += hw->rqd_start[i].stats.ucastPktsRxOK +
 626                                 hw->rqd_start[i].stats.mcastPktsRxOK +
 627                                 hw->rqd_start[i].stats.bcastPktsRxOK;
 628                 stats->ibytes    += hw->rqd_start[i].stats.ucastBytesRxOK +
 629                                 hw->rqd_start[i].stats.mcastBytesRxOK +
 630                                 hw->rqd_start[i].stats.bcastBytesRxOK;
 631                 stats->rx_nombuf += hw->rqd_start[i].stats.pktsRxOutOfBuf;
 632                 stats->ierrors   += hw->rqd_start[i].stats.pktsRxError;
 633         }
 634
 635 }
 636
 637 static void
 638 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 639 {
 640         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
 641         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
 642         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
 643         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
 644         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
 645 }
 646
 647 /* return 0 means link status changed, -1 means not changed */
 648 static int
 649 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
 650 {
 651         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 652         struct rte_eth_link link;
 653         uint32_t ret;
 654
 655         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
 656         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
 657
 658         if (!ret) {
 659                 PMD_INIT_LOG(ERR, "Link Status Negative : %s()\n", __func__);
 660                 return -1;
 661         }
 662
 663         if (ret & 0x1) {
 664                 link.link_status = 1;
 665                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
 666                 link.link_speed = ETH_LINK_SPEED_10000;
 667
 668                 rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
 669
 670                 return 0;
 671         }
 672
 673         return -1;
 674 }
 675
 676 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
 677 static void
 678 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
 679
 680         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
 681         if(set)
 682                 rxConf->rxMode = rxConf->rxMode | feature;
 683         else
 684                 rxConf->rxMode = rxConf->rxMode & (~feature);
 685
 686         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
 687 }
 688
 689 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 690 static void
 691 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
 692 {
 693         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 694         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 695 }
 696
 697 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
 698 static void
 699 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
 700 {
 701         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 702         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 703 }
 704
 705 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 706 static void
 707 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
 708 {
 709         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 710         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
 711 }
 712
 713 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
 714 static void
 715 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
 716 {
 717         struct vmxnet3_hw *hw = VMXNET3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 718         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
 719 }
 720
 721 #if PROCESS_SYS_EVENTS == 1
 722 static void
 723 vmxnet3_process_events(struct vmxnet3_hw *hw)
 724 {
 725         uint32_t events = hw->shared->ecr;
 726         if (!events){
 727                 PMD_INIT_LOG(ERR, "No events to process in %s()\n", __func__);
 728                 return;
 729         }
 730
 731         /*
 732         * ECR bits when written with 1b are cleared. Hence write
 733         * events back to ECR so that the bits which were set will be reset.
 734         */
 735         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
 736
 737         /* Check if link state has changed */
 738    if (events & VMXNET3_ECR_LINK){
 739            PMD_INIT_LOG(ERR, "Process events in %s(): VMXNET3_ECR_LINK event\n", __func__);
 740    }
 741
 742         /* Check if there is an error on xmit/recv queues */
 743         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
 744                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
 745
 746                 if (hw->tqd_start->status.stopped)
 747                         PMD_INIT_LOG(ERR, "tq error 0x%x\n",
 748                      hw->tqd_start->status.error);
 749
 750                 if (hw->rqd_start->status.stopped)
 751                         PMD_INIT_LOG(ERR, "rq error 0x%x\n",
 752                      hw->rqd_start->status.error);
 753
 754       /* Reset the device */
 755       /* Have to reset the device */
 756         }
 757
 758         if (events & VMXNET3_ECR_DIC)
 759                 PMD_INIT_LOG(ERR, "Device implementation change event.\n");
 760
 761         if (events & VMXNET3_ECR_DEBUG)
 762                 PMD_INIT_LOG(ERR, "Debug event generated by device.\n");
 763
 764 }
 765 #endif