ceph/src/spdk/dpdk/drivers/net/enic/base/vnic_dev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2008-2017 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  */
   5
   6 #include <rte_memzone.h>
   7 #include <rte_memcpy.h>
   8 #include <rte_string_fns.h>
   9
  10 #include "vnic_dev.h"
  11 #include "vnic_resource.h"
  12 #include "vnic_devcmd.h"
  13 #include "vnic_nic.h"
  14 #include "vnic_stats.h"
  15
  16
  17 enum vnic_proxy_type {
  18         PROXY_NONE,
  19         PROXY_BY_BDF,
  20         PROXY_BY_INDEX,
  21 };
  22
  23 struct vnic_res {
  24         void __iomem *vaddr;
  25         dma_addr_t bus_addr;
  26         unsigned int count;
  27 };
  28
  29 struct vnic_intr_coal_timer_info {
  30         u32 mul;
  31         u32 div;
  32         u32 max_usec;
  33 };
  34
  35 struct vnic_dev {
  36         void *priv;
  37         struct rte_pci_device *pdev;
  38         struct vnic_res res[RES_TYPE_MAX];
  39         enum vnic_dev_intr_mode intr_mode;
  40         struct vnic_devcmd __iomem *devcmd;
  41         struct vnic_devcmd_notify *notify;
  42         struct vnic_devcmd_notify notify_copy;
  43         dma_addr_t notify_pa;
  44         u32 notify_sz;
  45         dma_addr_t linkstatus_pa;
  46         struct vnic_stats *stats;
  47         dma_addr_t stats_pa;
  48         struct vnic_devcmd_fw_info *fw_info;
  49         dma_addr_t fw_info_pa;
  50         enum vnic_proxy_type proxy;
  51         u32 proxy_index;
  52         u64 args[VNIC_DEVCMD_NARGS];
  53         int in_reset;
  54         struct vnic_intr_coal_timer_info intr_coal_timer_info;
  55         void *(*alloc_consistent)(void *priv, size_t size,
  56                 dma_addr_t *dma_handle, u8 *name);
  57         void (*free_consistent)(void *priv,
  58                 size_t size, void *vaddr,
  59                 dma_addr_t dma_handle);
  60 };
  61
  62 #define VNIC_MAX_RES_HDR_SIZE \
  63         (sizeof(struct vnic_resource_header) + \
  64         sizeof(struct vnic_resource) * RES_TYPE_MAX)
  65 #define VNIC_RES_STRIDE 128
  66
  67 void *vnic_dev_priv(struct vnic_dev *vdev)
  68 {
  69         return vdev->priv;
  70 }
  71
  72 void vnic_register_cbacks(struct vnic_dev *vdev,
  73         void *(*alloc_consistent)(void *priv, size_t size,
  74             dma_addr_t *dma_handle, u8 *name),
  75         void (*free_consistent)(void *priv,
  76             size_t size, void *vaddr,
  77             dma_addr_t dma_handle))
  78 {
  79         vdev->alloc_consistent = alloc_consistent;
  80         vdev->free_consistent = free_consistent;
  81 }
  82
  83 static int vnic_dev_discover_res(struct vnic_dev *vdev,
  84         struct vnic_dev_bar *bar, unsigned int num_bars)
  85 {
  86         struct vnic_resource_header __iomem *rh;
  87         struct mgmt_barmap_hdr __iomem *mrh;
  88         struct vnic_resource __iomem *r;
  89         u8 type;
  90
  91         if (num_bars == 0)
  92                 return -EINVAL;
  93
  94         if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
  95                 pr_err("vNIC BAR0 res hdr length error\n");
  96                 return -EINVAL;
  97         }
  98
  99         rh  = bar->vaddr;
 100         mrh = bar->vaddr;
 101         if (!rh) {
 102                 pr_err("vNIC BAR0 res hdr not mem-mapped\n");
 103                 return -EINVAL;
 104         }
 105
 106         /* Check for mgmt vnic in addition to normal vnic */
 107         if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) ||
 108                 (ioread32(&rh->version) != VNIC_RES_VERSION)) {
 109                 if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) ||
 110                         (ioread32(&mrh->version) != MGMTVNIC_VERSION)) {
 111                         pr_err("vNIC BAR0 res magic/version error " \
 112                                 "exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n",
 113                                 VNIC_RES_MAGIC, VNIC_RES_VERSION,
 114                                 MGMTVNIC_MAGIC, MGMTVNIC_VERSION,
 115                                 ioread32(&rh->magic), ioread32(&rh->version));
 116                         return -EINVAL;
 117                 }
 118         }
 119
 120         if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC)
 121                 r = (struct vnic_resource __iomem *)(mrh + 1);
 122         else
 123                 r = (struct vnic_resource __iomem *)(rh + 1);
 124
 125
 126         while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
 127                 u8 bar_num = ioread8(&r->bar);
 128                 u32 bar_offset = ioread32(&r->bar_offset);
 129                 u32 count = ioread32(&r->count);
 130                 u32 len;
 131
 132                 r++;
 133
 134                 if (bar_num >= num_bars)
 135                         continue;
 136
 137                 if (!bar[bar_num].len || !bar[bar_num].vaddr)
 138                         continue;
 139
 140                 switch (type) {
 141                 case RES_TYPE_WQ:
 142                 case RES_TYPE_RQ:
 143                 case RES_TYPE_CQ:
 144                 case RES_TYPE_INTR_CTRL:
 145                         /* each count is stride bytes long */
 146                         len = count * VNIC_RES_STRIDE;
 147                         if (len + bar_offset > bar[bar_num].len) {
 148                                 pr_err("vNIC BAR0 resource %d " \
 149                                         "out-of-bounds, offset 0x%x + " \
 150                                         "size 0x%x > bar len 0x%lx\n",
 151                                         type, bar_offset,
 152                                         len,
 153                                         bar[bar_num].len);
 154                                 return -EINVAL;
 155                         }
 156                         break;
 157                 case RES_TYPE_INTR_PBA_LEGACY:
 158                 case RES_TYPE_DEVCMD:
 159                         len = count;
 160                         break;
 161                 default:
 162                         continue;
 163                 }
 164
 165                 vdev->res[type].count = count;
 166                 vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
 167                     bar_offset;
 168                 vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
 169         }
 170
 171         return 0;
 172 }
 173
 174 unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
 175         enum vnic_res_type type)
 176 {
 177         return vdev->res[type].count;
 178 }
 179
 180 void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
 181         unsigned int index)
 182 {
 183         if (!vdev->res[type].vaddr)
 184                 return NULL;
 185
 186         switch (type) {
 187         case RES_TYPE_WQ:
 188         case RES_TYPE_RQ:
 189         case RES_TYPE_CQ:
 190         case RES_TYPE_INTR_CTRL:
 191                 return (char __iomem *)vdev->res[type].vaddr +
 192                         index * VNIC_RES_STRIDE;
 193         default:
 194                 return (char __iomem *)vdev->res[type].vaddr;
 195         }
 196 }
 197
 198 unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
 199         unsigned int desc_count, unsigned int desc_size)
 200 {
 201         /* The base address of the desc rings must be 512 byte aligned.
 202          * Descriptor count is aligned to groups of 32 descriptors.  A
 203          * count of 0 means the maximum 4096 descriptors.  Descriptor
 204          * size is aligned to 16 bytes.
 205          */
 206
 207         unsigned int count_align = 32;
 208         unsigned int desc_align = 16;
 209
 210         ring->base_align = 512;
 211
 212         if (desc_count == 0)
 213                 desc_count = 4096;
 214
 215         ring->desc_count = VNIC_ALIGN(desc_count, count_align);
 216
 217         ring->desc_size = VNIC_ALIGN(desc_size, desc_align);
 218
 219         ring->size = ring->desc_count * ring->desc_size;
 220         ring->size_unaligned = ring->size + ring->base_align;
 221
 222         return ring->size_unaligned;
 223 }
 224
 225 void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
 226 {
 227         memset(ring->descs, 0, ring->size);
 228 }
 229
 230 int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev,
 231         struct vnic_dev_ring *ring,
 232         unsigned int desc_count, unsigned int desc_size,
 233         __attribute__((unused)) unsigned int socket_id,
 234         char *z_name)
 235 {
 236         void *alloc_addr;
 237         dma_addr_t alloc_pa = 0;
 238
 239         vnic_dev_desc_ring_size(ring, desc_count, desc_size);
 240         alloc_addr = vdev->alloc_consistent(vdev->priv,
 241                                             ring->size_unaligned,
 242                                             &alloc_pa, (u8 *)z_name);
 243         if (!alloc_addr) {
 244                 pr_err("Failed to allocate ring (size=%d), aborting\n",
 245                         (int)ring->size);
 246                 return -ENOMEM;
 247         }
 248         ring->descs_unaligned = alloc_addr;
 249         if (!alloc_pa) {
 250                 pr_err("Failed to map allocated ring (size=%d), aborting\n",
 251                         (int)ring->size);
 252                 vdev->free_consistent(vdev->priv,
 253                                       ring->size_unaligned,
 254                                       alloc_addr,
 255                                       alloc_pa);
 256                 return -ENOMEM;
 257         }
 258         ring->base_addr_unaligned = alloc_pa;
 259
 260         ring->base_addr = VNIC_ALIGN(ring->base_addr_unaligned,
 261                 ring->base_align);
 262         ring->descs = (u8 *)ring->descs_unaligned +
 263             (ring->base_addr - ring->base_addr_unaligned);
 264
 265         vnic_dev_clear_desc_ring(ring);
 266
 267         ring->desc_avail = ring->desc_count - 1;
 268
 269         return 0;
 270 }
 271
 272 void vnic_dev_free_desc_ring(__attribute__((unused))  struct vnic_dev *vdev,
 273         struct vnic_dev_ring *ring)
 274 {
 275         if (ring->descs) {
 276                 vdev->free_consistent(vdev->priv,
 277                                       ring->size_unaligned,
 278                                       ring->descs_unaligned,
 279                                       ring->base_addr_unaligned);
 280                 ring->descs = NULL;
 281         }
 282 }
 283
 284 static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 285         int wait)
 286 {
 287         struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
 288         unsigned int i;
 289         int delay;
 290         u32 status;
 291         int err;
 292
 293         status = ioread32(&devcmd->status);
 294         if (status == 0xFFFFFFFF) {
 295                 /* PCI-e target device is gone */
 296                 return -ENODEV;
 297         }
 298         if (status & STAT_BUSY) {
 299
 300                 pr_err("Busy devcmd %d\n",  _CMD_N(cmd));
 301                 return -EBUSY;
 302         }
 303
 304         if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
 305                 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
 306                         writeq(vdev->args[i], &devcmd->args[i]);
 307                 wmb(); /* complete all writes initiated till now */
 308         }
 309
 310         iowrite32(cmd, &devcmd->cmd);
 311
 312         if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
 313                 return 0;
 314
 315         for (delay = 0; delay < wait; delay++) {
 316
 317                 udelay(100);
 318
 319                 status = ioread32(&devcmd->status);
 320                 if (status == 0xFFFFFFFF) {
 321                         /* PCI-e target device is gone */
 322                         return -ENODEV;
 323                 }
 324
 325                 if (!(status & STAT_BUSY)) {
 326                         if (status & STAT_ERROR) {
 327                                 err = -(int)readq(&devcmd->args[0]);
 328                                 if (cmd != CMD_CAPABILITY)
 329                                         pr_err("Devcmd %d failed " \
 330                                                 "with error code %d\n",
 331                                                 _CMD_N(cmd), err);
 332                                 return err;
 333                         }
 334
 335                         if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
 336                                 rmb();/* finish all reads initiated till now */
 337                                 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
 338                                         vdev->args[i] = readq(&devcmd->args[i]);
 339                         }
 340
 341                         return 0;
 342                 }
 343         }
 344
 345         pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
 346         return -ETIMEDOUT;
 347 }
 348
 349 static int vnic_dev_cmd_proxy(struct vnic_dev *vdev,
 350         enum vnic_devcmd_cmd proxy_cmd, enum vnic_devcmd_cmd cmd,
 351         u64 *args, int nargs, int wait)
 352 {
 353         u32 status;
 354         int err;
 355
 356         /*
 357          * Proxy command consumes 2 arguments. One for proxy index,
 358          * the other is for command to be proxied
 359          */
 360         if (nargs > VNIC_DEVCMD_NARGS - 2) {
 361                 pr_err("number of args %d exceeds the maximum\n", nargs);
 362                 return -EINVAL;
 363         }
 364         memset(vdev->args, 0, sizeof(vdev->args));
 365
 366         vdev->args[0] = vdev->proxy_index;
 367         vdev->args[1] = cmd;
 368         memcpy(&vdev->args[2], args, nargs * sizeof(args[0]));
 369
 370         err = _vnic_dev_cmd(vdev, proxy_cmd, wait);
 371         if (err)
 372                 return err;
 373
 374         status = (u32)vdev->args[0];
 375         if (status & STAT_ERROR) {
 376                 err = (int)vdev->args[1];
 377                 if (err != ERR_ECMDUNKNOWN ||
 378                     cmd != CMD_CAPABILITY)
 379                         pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd));
 380                 return err;
 381         }
 382
 383         memcpy(args, &vdev->args[1], nargs * sizeof(args[0]));
 384
 385         return 0;
 386 }
 387
 388 static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
 389         enum vnic_devcmd_cmd cmd, u64 *args, int nargs, int wait)
 390 {
 391         int err;
 392
 393         if (nargs > VNIC_DEVCMD_NARGS) {
 394                 pr_err("number of args %d exceeds the maximum\n", nargs);
 395                 return -EINVAL;
 396         }
 397         memset(vdev->args, 0, sizeof(vdev->args));
 398         memcpy(vdev->args, args, nargs * sizeof(args[0]));
 399
 400         err = _vnic_dev_cmd(vdev, cmd, wait);
 401
 402         memcpy(args, vdev->args, nargs * sizeof(args[0]));
 403
 404         return err;
 405 }
 406
 407 int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 408         u64 *a0, u64 *a1, int wait)
 409 {
 410         u64 args[2];
 411         int err;
 412
 413         args[0] = *a0;
 414         args[1] = *a1;
 415         memset(vdev->args, 0, sizeof(vdev->args));
 416
 417         switch (vdev->proxy) {
 418         case PROXY_BY_INDEX:
 419                 err =  vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
 420                                 args, ARRAY_SIZE(args), wait);
 421                 break;
 422         case PROXY_BY_BDF:
 423                 err =  vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
 424                                 args, ARRAY_SIZE(args), wait);
 425                 break;
 426         case PROXY_NONE:
 427         default:
 428                 err = vnic_dev_cmd_no_proxy(vdev, cmd, args, 2, wait);
 429                 break;
 430         }
 431
 432         if (err == 0) {
 433                 *a0 = args[0];
 434                 *a1 = args[1];
 435         }
 436
 437         return err;
 438 }
 439
 440 int vnic_dev_cmd_args(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 441                       u64 *args, int nargs, int wait)
 442 {
 443         switch (vdev->proxy) {
 444         case PROXY_BY_INDEX:
 445                 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
 446                                 args, nargs, wait);
 447         case PROXY_BY_BDF:
 448                 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
 449                                 args, nargs, wait);
 450         case PROXY_NONE:
 451         default:
 452                 return vnic_dev_cmd_no_proxy(vdev, cmd, args, nargs, wait);
 453         }
 454 }
 455
 456 static int vnic_dev_advanced_filters_cap(struct vnic_dev *vdev, u64 *args,
 457                 int nargs)
 458 {
 459         memset(args, 0, nargs * sizeof(*args));
 460         args[0] = CMD_ADD_ADV_FILTER;
 461         args[1] = FILTER_CAP_MODE_V1_FLAG;
 462         return vnic_dev_cmd_args(vdev, CMD_CAPABILITY, args, nargs, 1000);
 463 }
 464
 465 int vnic_dev_capable_adv_filters(struct vnic_dev *vdev)
 466 {
 467         u64 a0 = CMD_ADD_ADV_FILTER, a1 = 0;
 468         int wait = 1000;
 469         int err;
 470
 471         err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
 472         if (err)
 473                 return 0;
 474         return (a1 >= (u32)FILTER_DPDK_1);
 475 }
 476
 477 /*  Determine the "best" filtering mode VIC is capaible of. Returns one of 3
 478  *  value or 0 on error:
 479  *      FILTER_DPDK_1- advanced filters availabile
 480  *      FILTER_USNIC_IP_FLAG - advanced filters but with the restriction that
 481  *              the IP layer must explicitly specified. I.e. cannot have a UDP
 482  *              filter that matches both IPv4 and IPv6.
 483  *      FILTER_IPV4_5TUPLE - fallback if either of the 2 above aren't available.
 484  *              all other filter types are not available.
 485  *   Retrun true in filter_tags if supported
 486  */
 487 int vnic_dev_capable_filter_mode(struct vnic_dev *vdev, u32 *mode,
 488                                  u8 *filter_actions)
 489 {
 490         u64 args[4];
 491         int err;
 492         u32 max_level = 0;
 493
 494         err = vnic_dev_advanced_filters_cap(vdev, args, 4);
 495
 496         /* determine supported filter actions */
 497         *filter_actions = FILTER_ACTION_RQ_STEERING_FLAG; /* always available */
 498         if (args[2] == FILTER_CAP_MODE_V1)
 499                 *filter_actions = args[3];
 500
 501         if (err || ((args[0] == 1) && (args[1] == 0))) {
 502                 /* Adv filter Command not supported or adv filters available but
 503                  * not enabled. Try the normal filter capability command.
 504                  */
 505                 args[0] = CMD_ADD_FILTER;
 506                 args[1] = 0;
 507                 err = vnic_dev_cmd_args(vdev, CMD_CAPABILITY, args, 2, 1000);
 508                 if (err)
 509                         return err;
 510                 max_level = args[1];
 511                 goto parse_max_level;
 512         } else if (args[2] == FILTER_CAP_MODE_V1) {
 513                 /* parse filter capability mask in args[1] */
 514                 if (args[1] & FILTER_DPDK_1_FLAG)
 515                         *mode = FILTER_DPDK_1;
 516                 else if (args[1] & FILTER_USNIC_IP_FLAG)
 517                         *mode = FILTER_USNIC_IP;
 518                 else if (args[1] & FILTER_IPV4_5TUPLE_FLAG)
 519                         *mode = FILTER_IPV4_5TUPLE;
 520                 return 0;
 521         }
 522         max_level = args[1];
 523 parse_max_level:
 524         if (max_level >= (u32)FILTER_USNIC_IP)
 525                 *mode = FILTER_USNIC_IP;
 526         else
 527                 *mode = FILTER_IPV4_5TUPLE;
 528         return 0;
 529 }
 530
 531 void vnic_dev_capable_udp_rss_weak(struct vnic_dev *vdev, bool *cfg_chk,
 532                                    bool *weak)
 533 {
 534         u64 a0 = CMD_NIC_CFG, a1 = 0;
 535         int wait = 1000;
 536         int err;
 537
 538         *cfg_chk = false;
 539         *weak = false;
 540         err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
 541         if (err == 0 && a0 != 0 && a1 != 0) {
 542                 *cfg_chk = true;
 543                 *weak = !!((a1 >> 32) & CMD_NIC_CFG_CAPF_UDP_WEAK);
 544         }
 545 }
 546
 547 int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
 548 {
 549         u64 a0 = (u32)cmd, a1 = 0;
 550         int wait = 1000;
 551         int err;
 552
 553         err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
 554
 555         return !(err || a0);
 556 }
 557
 558 int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, size_t size,
 559         void *value)
 560 {
 561         u64 a0, a1;
 562         int wait = 1000;
 563         int err;
 564
 565         a0 = offset;
 566         a1 = size;
 567
 568         err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
 569
 570         switch (size) {
 571         case 1:
 572                 *(u8 *)value = (u8)a0;
 573                 break;
 574         case 2:
 575                 *(u16 *)value = (u16)a0;
 576                 break;
 577         case 4:
 578                 *(u32 *)value = (u32)a0;
 579                 break;
 580         case 8:
 581                 *(u64 *)value = a0;
 582                 break;
 583         default:
 584                 BUG();
 585                 break;
 586         }
 587
 588         return err;
 589 }
 590
 591 int vnic_dev_stats_clear(struct vnic_dev *vdev)
 592 {
 593         u64 a0 = 0, a1 = 0;
 594         int wait = 1000;
 595
 596         return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
 597 }
 598
 599 int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
 600 {
 601         u64 a0, a1;
 602         int wait = 1000;
 603
 604         if (!vdev->stats)
 605                 return -ENOMEM;
 606
 607         *stats = vdev->stats;
 608         a0 = vdev->stats_pa;
 609         a1 = sizeof(struct vnic_stats);
 610
 611         return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
 612 }
 613
 614 int vnic_dev_close(struct vnic_dev *vdev)
 615 {
 616         u64 a0 = 0, a1 = 0;
 617         int wait = 1000;
 618
 619         return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
 620 }
 621
 622 int vnic_dev_enable_wait(struct vnic_dev *vdev)
 623 {
 624         u64 a0 = 0, a1 = 0;
 625         int wait = 1000;
 626
 627         if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
 628                 return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
 629         else
 630                 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
 631 }
 632
 633 int vnic_dev_disable(struct vnic_dev *vdev)
 634 {
 635         u64 a0 = 0, a1 = 0;
 636         int wait = 1000;
 637
 638         return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
 639 }
 640
 641 int vnic_dev_open(struct vnic_dev *vdev, int arg)
 642 {
 643         u64 a0 = (u32)arg, a1 = 0;
 644         int wait = 1000;
 645
 646         return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
 647 }
 648
 649 int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
 650 {
 651         u64 a0 = 0, a1 = 0;
 652         int wait = 1000;
 653         int err;
 654
 655         *done = 0;
 656
 657         err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
 658         if (err)
 659                 return err;
 660
 661         *done = (a0 == 0);
 662
 663         return 0;
 664 }
 665
 666 int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
 667 {
 668         u64 a0 = 0, a1 = 0;
 669         int wait = 1000;
 670         int err, i;
 671
 672         for (i = 0; i < ETH_ALEN; i++)
 673                 mac_addr[i] = 0;
 674
 675         err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 676         if (err)
 677                 return err;
 678
 679         for (i = 0; i < ETH_ALEN; i++)
 680                 mac_addr[i] = ((u8 *)&a0)[i];
 681
 682         return 0;
 683 }
 684
 685 int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
 686         int broadcast, int promisc, int allmulti)
 687 {
 688         u64 a0, a1 = 0;
 689         int wait = 1000;
 690         int err;
 691
 692         a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
 693              (multicast ? CMD_PFILTER_MULTICAST : 0) |
 694              (broadcast ? CMD_PFILTER_BROADCAST : 0) |
 695              (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
 696              (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
 697
 698         err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
 699         if (err)
 700                 pr_err("Can't set packet filter\n");
 701
 702         return err;
 703 }
 704
 705 int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
 706 {
 707         u64 a0 = 0, a1 = 0;
 708         int wait = 1000;
 709         int err;
 710         int i;
 711
 712         for (i = 0; i < ETH_ALEN; i++)
 713                 ((u8 *)&a0)[i] = addr[i];
 714
 715         err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 716         if (err)
 717                 pr_err("Can't add addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
 718                         addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
 719                         err);
 720
 721         return err;
 722 }
 723
 724 int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
 725 {
 726         u64 a0 = 0, a1 = 0;
 727         int wait = 1000;
 728         int err;
 729         int i;
 730
 731         for (i = 0; i < ETH_ALEN; i++)
 732                 ((u8 *)&a0)[i] = addr[i];
 733
 734         err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
 735         if (err)
 736                 pr_err("Can't del addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
 737                         addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
 738                         err);
 739
 740         return err;
 741 }
 742
 743 int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
 744         u8 ig_vlan_rewrite_mode)
 745 {
 746         u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
 747         int wait = 1000;
 748
 749         if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
 750                 return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
 751                                 &a0, &a1, wait);
 752         else
 753                 return 0;
 754 }
 755
 756 void vnic_dev_set_reset_flag(struct vnic_dev *vdev, int state)
 757 {
 758         vdev->in_reset = state;
 759 }
 760
 761 static inline int vnic_dev_in_reset(struct vnic_dev *vdev)
 762 {
 763         return vdev->in_reset;
 764 }
 765
 766 int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
 767         void *notify_addr, dma_addr_t notify_pa, u16 intr)
 768 {
 769         u64 a0, a1;
 770         int wait = 1000;
 771         int r;
 772
 773         memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
 774         if (!vnic_dev_in_reset(vdev)) {
 775                 vdev->notify = notify_addr;
 776                 vdev->notify_pa = notify_pa;
 777         }
 778
 779         a0 = (u64)notify_pa;
 780         a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
 781         a1 += sizeof(struct vnic_devcmd_notify);
 782
 783         r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 784         if (!vnic_dev_in_reset(vdev))
 785                 vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
 786
 787         return r;
 788 }
 789
 790 int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
 791 {
 792         void *notify_addr = NULL;
 793         dma_addr_t notify_pa = 0;
 794         char name[NAME_MAX];
 795         static u32 instance;
 796
 797         if (vdev->notify || vdev->notify_pa) {
 798                 return vnic_dev_notify_setcmd(vdev, vdev->notify,
 799                                               vdev->notify_pa, intr);
 800         }
 801         if (!vnic_dev_in_reset(vdev)) {
 802                 snprintf((char *)name, sizeof(name),
 803                         "vnic_notify-%u", instance++);
 804                 notify_addr = vdev->alloc_consistent(vdev->priv,
 805                         sizeof(struct vnic_devcmd_notify),
 806                         &notify_pa, (u8 *)name);
 807                 if (!notify_addr)
 808                         return -ENOMEM;
 809         }
 810
 811         return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
 812 }
 813
 814 int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
 815 {
 816         u64 a0, a1;
 817         int wait = 1000;
 818         int err;
 819
 820         a0 = 0;  /* paddr = 0 to unset notify buffer */
 821         a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
 822         a1 += sizeof(struct vnic_devcmd_notify);
 823
 824         err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 825         if (!vnic_dev_in_reset(vdev)) {
 826                 vdev->notify = NULL;
 827                 vdev->notify_pa = 0;
 828                 vdev->notify_sz = 0;
 829         }
 830
 831         return err;
 832 }
 833
 834 int vnic_dev_notify_unset(struct vnic_dev *vdev)
 835 {
 836         if (vdev->notify && !vnic_dev_in_reset(vdev)) {
 837                 vdev->free_consistent(vdev->priv,
 838                         sizeof(struct vnic_devcmd_notify),
 839                         vdev->notify,
 840                         vdev->notify_pa);
 841         }
 842
 843         return vnic_dev_notify_unsetcmd(vdev);
 844 }
 845
 846 static int vnic_dev_notify_ready(struct vnic_dev *vdev)
 847 {
 848         u32 *words;
 849         unsigned int nwords = vdev->notify_sz / 4;
 850         unsigned int i;
 851         u32 csum;
 852
 853         if (!vdev->notify || !vdev->notify_sz)
 854                 return 0;
 855
 856         do {
 857                 csum = 0;
 858                 rte_memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
 859                 words = (u32 *)&vdev->notify_copy;
 860                 for (i = 1; i < nwords; i++)
 861                         csum += words[i];
 862         } while (csum != words[0]);
 863
 864         return 1;
 865 }
 866
 867 int vnic_dev_init(struct vnic_dev *vdev, int arg)
 868 {
 869         u64 a0 = (u32)arg, a1 = 0;
 870         int wait = 1000;
 871         int r = 0;
 872
 873         if (vnic_dev_capable(vdev, CMD_INIT))
 874                 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
 875         else {
 876                 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
 877                 if (a0 & CMD_INITF_DEFAULT_MAC) {
 878                         /* Emulate these for old CMD_INIT_v1 which
 879                          * didn't pass a0 so no CMD_INITF_*.
 880                          */
 881                         vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 882                         vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 883                 }
 884         }
 885         return r;
 886 }
 887
 888 void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
 889 {
 890         /* Default: hardware intr coal timer is in units of 1.5 usecs */
 891         vdev->intr_coal_timer_info.mul = 2;
 892         vdev->intr_coal_timer_info.div = 3;
 893         vdev->intr_coal_timer_info.max_usec =
 894                 vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
 895 }
 896
 897 int vnic_dev_link_status(struct vnic_dev *vdev)
 898 {
 899         if (!vnic_dev_notify_ready(vdev))
 900                 return 0;
 901
 902         return vdev->notify_copy.link_state;
 903 }
 904
 905 u32 vnic_dev_port_speed(struct vnic_dev *vdev)
 906 {
 907         if (!vnic_dev_notify_ready(vdev))
 908                 return 0;
 909
 910         return vdev->notify_copy.port_speed;
 911 }
 912
 913 u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
 914 {
 915         return (usec * vdev->intr_coal_timer_info.mul) /
 916                 vdev->intr_coal_timer_info.div;
 917 }
 918
 919 u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
 920 {
 921         return (hw_cycles * vdev->intr_coal_timer_info.div) /
 922                 vdev->intr_coal_timer_info.mul;
 923 }
 924
 925 u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
 926 {
 927         return vdev->intr_coal_timer_info.max_usec;
 928 }
 929
 930 int vnic_dev_alloc_stats_mem(struct vnic_dev *vdev)
 931 {
 932         char name[NAME_MAX];
 933         static u32 instance;
 934
 935         snprintf((char *)name, sizeof(name), "vnic_stats-%u", instance++);
 936         vdev->stats = vdev->alloc_consistent(vdev->priv,
 937                                              sizeof(struct vnic_stats),
 938                                              &vdev->stats_pa, (u8 *)name);
 939         return vdev->stats == NULL ? -ENOMEM : 0;
 940 }
 941
 942 void vnic_dev_unregister(struct vnic_dev *vdev)
 943 {
 944         if (vdev) {
 945                 if (vdev->notify)
 946                         vdev->free_consistent(vdev->priv,
 947                                 sizeof(struct vnic_devcmd_notify),
 948                                 vdev->notify,
 949                                 vdev->notify_pa);
 950                 if (vdev->stats)
 951                         vdev->free_consistent(vdev->priv,
 952                                 sizeof(struct vnic_stats),
 953                                 vdev->stats, vdev->stats_pa);
 954                 if (vdev->fw_info)
 955                         vdev->free_consistent(vdev->priv,
 956                                 sizeof(struct vnic_devcmd_fw_info),
 957                                 vdev->fw_info, vdev->fw_info_pa);
 958                 rte_free(vdev);
 959         }
 960 }
 961
 962 struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
 963         void *priv, struct rte_pci_device *pdev, struct vnic_dev_bar *bar,
 964         unsigned int num_bars)
 965 {
 966         if (!vdev) {
 967                 char name[NAME_MAX];
 968                 snprintf((char *)name, sizeof(name), "%s-vnic",
 969                           pdev->device.name);
 970                 vdev = (struct vnic_dev *)rte_zmalloc_socket(name,
 971                                         sizeof(struct vnic_dev),
 972                                         RTE_CACHE_LINE_SIZE,
 973                                         pdev->device.numa_node);
 974                 if (!vdev)
 975                         return NULL;
 976         }
 977
 978         vdev->priv = priv;
 979         vdev->pdev = pdev;
 980
 981         if (vnic_dev_discover_res(vdev, bar, num_bars))
 982                 goto err_out;
 983
 984         vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
 985         if (!vdev->devcmd)
 986                 goto err_out;
 987
 988         return vdev;
 989
 990 err_out:
 991         vnic_dev_unregister(vdev);
 992         return NULL;
 993 }
 994
 995 /*
 996  *  vnic_dev_classifier: Add/Delete classifier entries
 997  *  @vdev: vdev of the device
 998  *  @cmd: CLSF_ADD for Add filter
 999  *        CLSF_DEL for Delete filter
1000  *  @entry: In case of ADD filter, the caller passes the RQ number in this
1001  *          variable.
1002  *          This function stores the filter_id returned by the
1003  *          firmware in the same variable before return;
1004  *
1005  *          In case of DEL filter, the caller passes the RQ number. Return
1006  *          value is irrelevant.
1007  * @data: filter data
1008  * @action: action data
1009  */
1010 int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,
1011         struct filter_v2 *data, struct filter_action_v2 *action_v2)
1012 {
1013         u64 a0 = 0, a1 = 0;
1014         int wait = 1000;
1015         dma_addr_t tlv_pa;
1016         int ret = -EINVAL;
1017         struct filter_tlv *tlv, *tlv_va;
1018         u64 tlv_size;
1019         u32 filter_size, action_size;
1020         static unsigned int unique_id;
1021         char z_name[RTE_MEMZONE_NAMESIZE];
1022         enum vnic_devcmd_cmd dev_cmd;
1023
1024         if (cmd == CLSF_ADD) {
1025                 dev_cmd = (data->type >= FILTER_DPDK_1) ?
1026                           CMD_ADD_ADV_FILTER : CMD_ADD_FILTER;
1027
1028                 filter_size = vnic_filter_size(data);
1029                 action_size = vnic_action_size(action_v2);
1030
1031                 tlv_size = filter_size + action_size +
1032                     2*sizeof(struct filter_tlv);
1033                 snprintf((char *)z_name, sizeof(z_name),
1034                         "vnic_clsf_%u", unique_id++);
1035                 tlv_va = vdev->alloc_consistent(vdev->priv,
1036                         tlv_size, &tlv_pa, (u8 *)z_name);
1037                 if (!tlv_va)
1038                         return -ENOMEM;
1039                 tlv = tlv_va;
1040                 a0 = tlv_pa;
1041                 a1 = tlv_size;
1042                 memset(tlv, 0, tlv_size);
1043                 tlv->type = CLSF_TLV_FILTER;
1044                 tlv->length = filter_size;
1045                 memcpy(&tlv->val, (void *)data, filter_size);
1046
1047                 tlv = (struct filter_tlv *)((char *)tlv +
1048                                          sizeof(struct filter_tlv) +
1049                                          filter_size);
1050
1051                 tlv->type = CLSF_TLV_ACTION;
1052                 tlv->length = action_size;
1053                 memcpy(&tlv->val, (void *)action_v2, action_size);
1054                 ret = vnic_dev_cmd(vdev, dev_cmd, &a0, &a1, wait);
1055                 *entry = (u16)a0;
1056                 vdev->free_consistent(vdev->priv, tlv_size, tlv_va, tlv_pa);
1057         } else if (cmd == CLSF_DEL) {
1058                 a0 = *entry;
1059                 ret = vnic_dev_cmd(vdev, CMD_DEL_FILTER, &a0, &a1, wait);
1060         }
1061
1062         return ret;
1063 }
1064
1065 int vnic_dev_overlay_offload_ctrl(struct vnic_dev *vdev, u8 overlay, u8 config)
1066 {
1067         u64 a0 = overlay;
1068         u64 a1 = config;
1069         int wait = 1000;
1070
1071         return vnic_dev_cmd(vdev, CMD_OVERLAY_OFFLOAD_CTRL, &a0, &a1, wait);
1072 }
1073
1074 int vnic_dev_overlay_offload_cfg(struct vnic_dev *vdev, u8 overlay,
1075                                  u16 vxlan_udp_port_number)
1076 {
1077         u64 a1 = vxlan_udp_port_number;
1078         u64 a0 = overlay;
1079         int wait = 1000;
1080
1081         return vnic_dev_cmd(vdev, CMD_OVERLAY_OFFLOAD_CFG, &a0, &a1, wait);
1082 }
1083
1084 int vnic_dev_capable_vxlan(struct vnic_dev *vdev)
1085 {
1086         u64 a0 = VIC_FEATURE_VXLAN;
1087         u64 a1 = 0;
1088         int wait = 1000;
1089         int ret;
1090
1091         ret = vnic_dev_cmd(vdev, CMD_GET_SUPP_FEATURE_VER, &a0, &a1, wait);
1092         /* 1 if the NIC can do VXLAN for both IPv4 and IPv6 with multiple WQs */
1093         return ret == 0 &&
1094                 (a1 & (FEATURE_VXLAN_IPV6 | FEATURE_VXLAN_MULTI_WQ)) ==
1095                 (FEATURE_VXLAN_IPV6 | FEATURE_VXLAN_MULTI_WQ);
1096 }