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

   1 /*
   2  * Copyright 2008-2014 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  *
   5  * Copyright (c) 2014, Cisco Systems, Inc.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  * notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  * notice, this list of conditions and the following disclaimer in
  17  * the documentation and/or other materials provided with the
  18  * distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #include <rte_memzone.h>
  36 #include <rte_memcpy.h>
  37 #include <rte_string_fns.h>
  38
  39 #include "vnic_dev.h"
  40 #include "vnic_resource.h"
  41 #include "vnic_devcmd.h"
  42 #include "vnic_stats.h"
  43
  44
  45 enum vnic_proxy_type {
  46         PROXY_NONE,
  47         PROXY_BY_BDF,
  48         PROXY_BY_INDEX,
  49 };
  50
  51 struct vnic_res {
  52         void __iomem *vaddr;
  53         dma_addr_t bus_addr;
  54         unsigned int count;
  55 };
  56
  57 struct vnic_intr_coal_timer_info {
  58         u32 mul;
  59         u32 div;
  60         u32 max_usec;
  61 };
  62
  63 struct vnic_dev {
  64         void *priv;
  65         struct rte_pci_device *pdev;
  66         struct vnic_res res[RES_TYPE_MAX];
  67         enum vnic_dev_intr_mode intr_mode;
  68         struct vnic_devcmd __iomem *devcmd;
  69         struct vnic_devcmd_notify *notify;
  70         struct vnic_devcmd_notify notify_copy;
  71         dma_addr_t notify_pa;
  72         u32 notify_sz;
  73         dma_addr_t linkstatus_pa;
  74         struct vnic_stats *stats;
  75         dma_addr_t stats_pa;
  76         struct vnic_devcmd_fw_info *fw_info;
  77         dma_addr_t fw_info_pa;
  78         enum vnic_proxy_type proxy;
  79         u32 proxy_index;
  80         u64 args[VNIC_DEVCMD_NARGS];
  81         u16 split_hdr_size;
  82         int in_reset;
  83         struct vnic_intr_coal_timer_info intr_coal_timer_info;
  84         void *(*alloc_consistent)(void *priv, size_t size,
  85                 dma_addr_t *dma_handle, u8 *name);
  86         void (*free_consistent)(void *priv,
  87                 size_t size, void *vaddr,
  88                 dma_addr_t dma_handle);
  89 };
  90
  91 #define VNIC_MAX_RES_HDR_SIZE \
  92         (sizeof(struct vnic_resource_header) + \
  93         sizeof(struct vnic_resource) * RES_TYPE_MAX)
  94 #define VNIC_RES_STRIDE 128
  95
  96 void *vnic_dev_priv(struct vnic_dev *vdev)
  97 {
  98         return vdev->priv;
  99 }
 100
 101 void vnic_register_cbacks(struct vnic_dev *vdev,
 102         void *(*alloc_consistent)(void *priv, size_t size,
 103             dma_addr_t *dma_handle, u8 *name),
 104         void (*free_consistent)(void *priv,
 105             size_t size, void *vaddr,
 106             dma_addr_t dma_handle))
 107 {
 108         vdev->alloc_consistent = alloc_consistent;
 109         vdev->free_consistent = free_consistent;
 110 }
 111
 112 static int vnic_dev_discover_res(struct vnic_dev *vdev,
 113         struct vnic_dev_bar *bar, unsigned int num_bars)
 114 {
 115         struct vnic_resource_header __iomem *rh;
 116         struct mgmt_barmap_hdr __iomem *mrh;
 117         struct vnic_resource __iomem *r;
 118         u8 type;
 119
 120         if (num_bars == 0)
 121                 return -EINVAL;
 122
 123         if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
 124                 pr_err("vNIC BAR0 res hdr length error\n");
 125                 return -EINVAL;
 126         }
 127
 128         rh  = bar->vaddr;
 129         mrh = bar->vaddr;
 130         if (!rh) {
 131                 pr_err("vNIC BAR0 res hdr not mem-mapped\n");
 132                 return -EINVAL;
 133         }
 134
 135         /* Check for mgmt vnic in addition to normal vnic */
 136         if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) ||
 137                 (ioread32(&rh->version) != VNIC_RES_VERSION)) {
 138                 if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) ||
 139                         (ioread32(&mrh->version) != MGMTVNIC_VERSION)) {
 140                         pr_err("vNIC BAR0 res magic/version error " \
 141                                 "exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n",
 142                                 VNIC_RES_MAGIC, VNIC_RES_VERSION,
 143                                 MGMTVNIC_MAGIC, MGMTVNIC_VERSION,
 144                                 ioread32(&rh->magic), ioread32(&rh->version));
 145                         return -EINVAL;
 146                 }
 147         }
 148
 149         if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC)
 150                 r = (struct vnic_resource __iomem *)(mrh + 1);
 151         else
 152                 r = (struct vnic_resource __iomem *)(rh + 1);
 153
 154
 155         while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
 156                 u8 bar_num = ioread8(&r->bar);
 157                 u32 bar_offset = ioread32(&r->bar_offset);
 158                 u32 count = ioread32(&r->count);
 159                 u32 len;
 160
 161                 r++;
 162
 163                 if (bar_num >= num_bars)
 164                         continue;
 165
 166                 if (!bar[bar_num].len || !bar[bar_num].vaddr)
 167                         continue;
 168
 169                 switch (type) {
 170                 case RES_TYPE_WQ:
 171                 case RES_TYPE_RQ:
 172                 case RES_TYPE_CQ:
 173                 case RES_TYPE_INTR_CTRL:
 174                         /* each count is stride bytes long */
 175                         len = count * VNIC_RES_STRIDE;
 176                         if (len + bar_offset > bar[bar_num].len) {
 177                                 pr_err("vNIC BAR0 resource %d " \
 178                                         "out-of-bounds, offset 0x%x + " \
 179                                         "size 0x%x > bar len 0x%lx\n",
 180                                         type, bar_offset,
 181                                         len,
 182                                         bar[bar_num].len);
 183                                 return -EINVAL;
 184                         }
 185                         break;
 186                 case RES_TYPE_INTR_PBA_LEGACY:
 187                 case RES_TYPE_DEVCMD:
 188                         len = count;
 189                         break;
 190                 default:
 191                         continue;
 192                 }
 193
 194                 vdev->res[type].count = count;
 195                 vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
 196                     bar_offset;
 197                 vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
 198         }
 199
 200         return 0;
 201 }
 202
 203 unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
 204         enum vnic_res_type type)
 205 {
 206         return vdev->res[type].count;
 207 }
 208
 209 void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
 210         unsigned int index)
 211 {
 212         if (!vdev->res[type].vaddr)
 213                 return NULL;
 214
 215         switch (type) {
 216         case RES_TYPE_WQ:
 217         case RES_TYPE_RQ:
 218         case RES_TYPE_CQ:
 219         case RES_TYPE_INTR_CTRL:
 220                 return (char __iomem *)vdev->res[type].vaddr +
 221                         index * VNIC_RES_STRIDE;
 222         default:
 223                 return (char __iomem *)vdev->res[type].vaddr;
 224         }
 225 }
 226
 227 unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
 228         unsigned int desc_count, unsigned int desc_size)
 229 {
 230         /* The base address of the desc rings must be 512 byte aligned.
 231          * Descriptor count is aligned to groups of 32 descriptors.  A
 232          * count of 0 means the maximum 4096 descriptors.  Descriptor
 233          * size is aligned to 16 bytes.
 234          */
 235
 236         unsigned int count_align = 32;
 237         unsigned int desc_align = 16;
 238
 239         ring->base_align = 512;
 240
 241         if (desc_count == 0)
 242                 desc_count = 4096;
 243
 244         ring->desc_count = VNIC_ALIGN(desc_count, count_align);
 245
 246         ring->desc_size = VNIC_ALIGN(desc_size, desc_align);
 247
 248         ring->size = ring->desc_count * ring->desc_size;
 249         ring->size_unaligned = ring->size + ring->base_align;
 250
 251         return ring->size_unaligned;
 252 }
 253
 254 void vnic_set_hdr_split_size(struct vnic_dev *vdev, u16 size)
 255 {
 256         vdev->split_hdr_size = size;
 257 }
 258
 259 u16 vnic_get_hdr_split_size(struct vnic_dev *vdev)
 260 {
 261         return vdev->split_hdr_size;
 262 }
 263
 264 void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
 265 {
 266         memset(ring->descs, 0, ring->size);
 267 }
 268
 269 int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev,
 270         struct vnic_dev_ring *ring,
 271         unsigned int desc_count, unsigned int desc_size,
 272         __attribute__((unused)) unsigned int socket_id,
 273         char *z_name)
 274 {
 275         void *alloc_addr = NULL;
 276         dma_addr_t alloc_pa = 0;
 277
 278         vnic_dev_desc_ring_size(ring, desc_count, desc_size);
 279         alloc_addr = vdev->alloc_consistent(vdev->priv,
 280                                             ring->size_unaligned,
 281                                             &alloc_pa, (u8 *)z_name);
 282         if (!alloc_addr) {
 283                 pr_err("Failed to allocate ring (size=%d), aborting\n",
 284                         (int)ring->size);
 285                 return -ENOMEM;
 286         }
 287         ring->descs_unaligned = alloc_addr;
 288         if (!alloc_pa) {
 289                 pr_err("Failed to map allocated ring (size=%d), aborting\n",
 290                         (int)ring->size);
 291                 vdev->free_consistent(vdev->priv,
 292                                       ring->size_unaligned,
 293                                       alloc_addr,
 294                                       alloc_pa);
 295                 return -ENOMEM;
 296         }
 297         ring->base_addr_unaligned = alloc_pa;
 298
 299         ring->base_addr = VNIC_ALIGN(ring->base_addr_unaligned,
 300                 ring->base_align);
 301         ring->descs = (u8 *)ring->descs_unaligned +
 302             (ring->base_addr - ring->base_addr_unaligned);
 303
 304         vnic_dev_clear_desc_ring(ring);
 305
 306         ring->desc_avail = ring->desc_count - 1;
 307
 308         return 0;
 309 }
 310
 311 void vnic_dev_free_desc_ring(__attribute__((unused))  struct vnic_dev *vdev,
 312         struct vnic_dev_ring *ring)
 313 {
 314         if (ring->descs) {
 315                 vdev->free_consistent(vdev->priv,
 316                                       ring->size_unaligned,
 317                                       ring->descs_unaligned,
 318                                       ring->base_addr_unaligned);
 319                 ring->descs = NULL;
 320         }
 321 }
 322
 323 static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 324         int wait)
 325 {
 326         struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
 327         unsigned int i;
 328         int delay;
 329         u32 status;
 330         int err;
 331
 332         status = ioread32(&devcmd->status);
 333         if (status == 0xFFFFFFFF) {
 334                 /* PCI-e target device is gone */
 335                 return -ENODEV;
 336         }
 337         if (status & STAT_BUSY) {
 338
 339                 pr_err("Busy devcmd %d\n",  _CMD_N(cmd));
 340                 return -EBUSY;
 341         }
 342
 343         if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
 344                 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
 345                         writeq(vdev->args[i], &devcmd->args[i]);
 346                 wmb(); /* complete all writes initiated till now */
 347         }
 348
 349         iowrite32(cmd, &devcmd->cmd);
 350
 351         if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
 352                 return 0;
 353
 354         for (delay = 0; delay < wait; delay++) {
 355
 356                 udelay(100);
 357
 358                 status = ioread32(&devcmd->status);
 359                 if (status == 0xFFFFFFFF) {
 360                         /* PCI-e target device is gone */
 361                         return -ENODEV;
 362                 }
 363
 364                 if (!(status & STAT_BUSY)) {
 365                         if (status & STAT_ERROR) {
 366                                 err = -(int)readq(&devcmd->args[0]);
 367                                 if (cmd != CMD_CAPABILITY)
 368                                         pr_err("Devcmd %d failed " \
 369                                                 "with error code %d\n",
 370                                                 _CMD_N(cmd), err);
 371                                 return err;
 372                         }
 373
 374                         if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
 375                                 rmb();/* finish all reads initiated till now */
 376                                 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
 377                                         vdev->args[i] = readq(&devcmd->args[i]);
 378                         }
 379
 380                         return 0;
 381                 }
 382         }
 383
 384         pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
 385         return -ETIMEDOUT;
 386 }
 387
 388 static int vnic_dev_cmd_proxy(struct vnic_dev *vdev,
 389         enum vnic_devcmd_cmd proxy_cmd, enum vnic_devcmd_cmd cmd,
 390         u64 *a0, u64 *a1, int wait)
 391 {
 392         u32 status;
 393         int err;
 394
 395         memset(vdev->args, 0, sizeof(vdev->args));
 396
 397         vdev->args[0] = vdev->proxy_index;
 398         vdev->args[1] = cmd;
 399         vdev->args[2] = *a0;
 400         vdev->args[3] = *a1;
 401
 402         err = _vnic_dev_cmd(vdev, proxy_cmd, wait);
 403         if (err)
 404                 return err;
 405
 406         status = (u32)vdev->args[0];
 407         if (status & STAT_ERROR) {
 408                 err = (int)vdev->args[1];
 409                 if (err != ERR_ECMDUNKNOWN ||
 410                     cmd != CMD_CAPABILITY)
 411                         pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd));
 412                 return err;
 413         }
 414
 415         *a0 = vdev->args[1];
 416         *a1 = vdev->args[2];
 417
 418         return 0;
 419 }
 420
 421 static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
 422         enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
 423 {
 424         int err;
 425
 426         vdev->args[0] = *a0;
 427         vdev->args[1] = *a1;
 428
 429         err = _vnic_dev_cmd(vdev, cmd, wait);
 430
 431         *a0 = vdev->args[0];
 432         *a1 = vdev->args[1];
 433
 434         return err;
 435 }
 436
 437 void vnic_dev_cmd_proxy_by_index_start(struct vnic_dev *vdev, u16 index)
 438 {
 439         vdev->proxy = PROXY_BY_INDEX;
 440         vdev->proxy_index = index;
 441 }
 442
 443 void vnic_dev_cmd_proxy_by_bdf_start(struct vnic_dev *vdev, u16 bdf)
 444 {
 445         vdev->proxy = PROXY_BY_BDF;
 446         vdev->proxy_index = bdf;
 447 }
 448
 449 void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev)
 450 {
 451         vdev->proxy = PROXY_NONE;
 452         vdev->proxy_index = 0;
 453 }
 454
 455 int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 456         u64 *a0, u64 *a1, int wait)
 457 {
 458         memset(vdev->args, 0, sizeof(vdev->args));
 459
 460         switch (vdev->proxy) {
 461         case PROXY_BY_INDEX:
 462                 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
 463                                 a0, a1, wait);
 464         case PROXY_BY_BDF:
 465                 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
 466                                 a0, a1, wait);
 467         case PROXY_NONE:
 468         default:
 469                 return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait);
 470         }
 471 }
 472
 473 int vnic_dev_capable_adv_filters(struct vnic_dev *vdev)
 474 {
 475         u64 a0 = (u32)CMD_ADD_ADV_FILTER, a1 = 0;
 476         int wait = 1000;
 477         int err;
 478
 479         err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
 480         if (err)
 481                 return 0;
 482         return (a1 >= (u32)FILTER_DPDK_1);
 483 }
 484
 485 static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
 486 {
 487         u64 a0 = (u32)cmd, a1 = 0;
 488         int wait = 1000;
 489         int err;
 490
 491         err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
 492
 493         return !(err || a0);
 494 }
 495
 496 int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, size_t size,
 497         void *value)
 498 {
 499         u64 a0, a1;
 500         int wait = 1000;
 501         int err;
 502
 503         a0 = offset;
 504         a1 = size;
 505
 506         err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
 507
 508         switch (size) {
 509         case 1:
 510                 *(u8 *)value = (u8)a0;
 511                 break;
 512         case 2:
 513                 *(u16 *)value = (u16)a0;
 514                 break;
 515         case 4:
 516                 *(u32 *)value = (u32)a0;
 517                 break;
 518         case 8:
 519                 *(u64 *)value = a0;
 520                 break;
 521         default:
 522                 BUG();
 523                 break;
 524         }
 525
 526         return err;
 527 }
 528
 529 int vnic_dev_stats_clear(struct vnic_dev *vdev)
 530 {
 531         u64 a0 = 0, a1 = 0;
 532         int wait = 1000;
 533
 534         return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
 535 }
 536
 537 int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
 538 {
 539         u64 a0, a1;
 540         int wait = 1000;
 541         static u32 instance;
 542         char name[NAME_MAX];
 543
 544         if (!vdev->stats) {
 545                 snprintf((char *)name, sizeof(name),
 546                         "vnic_stats-%d", instance++);
 547                 vdev->stats = vdev->alloc_consistent(vdev->priv,
 548                         sizeof(struct vnic_stats), &vdev->stats_pa, (u8 *)name);
 549                 if (!vdev->stats)
 550                         return -ENOMEM;
 551         }
 552
 553         *stats = vdev->stats;
 554         a0 = vdev->stats_pa;
 555         a1 = sizeof(struct vnic_stats);
 556
 557         return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
 558 }
 559
 560 int vnic_dev_close(struct vnic_dev *vdev)
 561 {
 562         u64 a0 = 0, a1 = 0;
 563         int wait = 1000;
 564
 565         return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
 566 }
 567
 568 /** Deprecated.  @see vnic_dev_enable_wait */
 569 int vnic_dev_enable(struct vnic_dev *vdev)
 570 {
 571         u64 a0 = 0, a1 = 0;
 572         int wait = 1000;
 573
 574         return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
 575 }
 576
 577 int vnic_dev_enable_wait(struct vnic_dev *vdev)
 578 {
 579         u64 a0 = 0, a1 = 0;
 580         int wait = 1000;
 581
 582         if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
 583                 return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
 584         else
 585                 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
 586 }
 587
 588 int vnic_dev_disable(struct vnic_dev *vdev)
 589 {
 590         u64 a0 = 0, a1 = 0;
 591         int wait = 1000;
 592
 593         return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
 594 }
 595
 596 int vnic_dev_open(struct vnic_dev *vdev, int arg)
 597 {
 598         u64 a0 = (u32)arg, a1 = 0;
 599         int wait = 1000;
 600
 601         return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
 602 }
 603
 604 int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
 605 {
 606         u64 a0 = 0, a1 = 0;
 607         int wait = 1000;
 608         int err;
 609
 610         *done = 0;
 611
 612         err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
 613         if (err)
 614                 return err;
 615
 616         *done = (a0 == 0);
 617
 618         return 0;
 619 }
 620
 621 int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
 622 {
 623         u64 a0 = (u32)arg, a1 = 0;
 624         int wait = 1000;
 625
 626         return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
 627 }
 628
 629 int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
 630 {
 631         u64 a0 = 0, a1 = 0;
 632         int wait = 1000;
 633         int err;
 634
 635         *done = 0;
 636
 637         err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
 638         if (err)
 639                 return err;
 640
 641         *done = (a0 == 0);
 642
 643         return 0;
 644 }
 645
 646 int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
 647 {
 648         u64 a0, a1 = 0;
 649         int wait = 1000;
 650         int err, i;
 651
 652         for (i = 0; i < ETH_ALEN; i++)
 653                 mac_addr[i] = 0;
 654
 655         err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 656         if (err)
 657                 return err;
 658
 659         for (i = 0; i < ETH_ALEN; i++)
 660                 mac_addr[i] = ((u8 *)&a0)[i];
 661
 662         return 0;
 663 }
 664
 665 int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
 666         int broadcast, int promisc, int allmulti)
 667 {
 668         u64 a0, a1 = 0;
 669         int wait = 1000;
 670         int err;
 671
 672         a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
 673              (multicast ? CMD_PFILTER_MULTICAST : 0) |
 674              (broadcast ? CMD_PFILTER_BROADCAST : 0) |
 675              (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
 676              (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
 677
 678         err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
 679         if (err)
 680                 pr_err("Can't set packet filter\n");
 681
 682         return err;
 683 }
 684
 685 int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
 686 {
 687         u64 a0 = 0, a1 = 0;
 688         int wait = 1000;
 689         int err;
 690         int i;
 691
 692         for (i = 0; i < ETH_ALEN; i++)
 693                 ((u8 *)&a0)[i] = addr[i];
 694
 695         err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 696         if (err)
 697                 pr_err("Can't add addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
 698                         addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
 699                         err);
 700
 701         return err;
 702 }
 703
 704 int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
 705 {
 706         u64 a0 = 0, a1 = 0;
 707         int wait = 1000;
 708         int err;
 709         int i;
 710
 711         for (i = 0; i < ETH_ALEN; i++)
 712                 ((u8 *)&a0)[i] = addr[i];
 713
 714         err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
 715         if (err)
 716                 pr_err("Can't del addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
 717                         addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
 718                         err);
 719
 720         return err;
 721 }
 722
 723 int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
 724         u8 ig_vlan_rewrite_mode)
 725 {
 726         u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
 727         int wait = 1000;
 728
 729         if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
 730                 return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
 731                                 &a0, &a1, wait);
 732         else
 733                 return 0;
 734 }
 735
 736 int vnic_dev_raise_intr(struct vnic_dev *vdev, u16 intr)
 737 {
 738         u64 a0 = intr, a1 = 0;
 739         int wait = 1000;
 740         int err;
 741
 742         err = vnic_dev_cmd(vdev, CMD_IAR, &a0, &a1, wait);
 743         if (err)
 744                 pr_err("Failed to raise INTR[%d], err %d\n", intr, err);
 745
 746         return err;
 747 }
 748
 749 void vnic_dev_set_reset_flag(struct vnic_dev *vdev, int state)
 750 {
 751         vdev->in_reset = state;
 752 }
 753
 754 static inline int vnic_dev_in_reset(struct vnic_dev *vdev)
 755 {
 756         return vdev->in_reset;
 757 }
 758
 759 int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
 760         void *notify_addr, dma_addr_t notify_pa, u16 intr)
 761 {
 762         u64 a0, a1;
 763         int wait = 1000;
 764         int r;
 765
 766         memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
 767         if (!vnic_dev_in_reset(vdev)) {
 768                 vdev->notify = notify_addr;
 769                 vdev->notify_pa = notify_pa;
 770         }
 771
 772         a0 = (u64)notify_pa;
 773         a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
 774         a1 += sizeof(struct vnic_devcmd_notify);
 775
 776         r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 777         if (!vnic_dev_in_reset(vdev))
 778                 vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
 779
 780         return r;
 781 }
 782
 783 int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
 784 {
 785         void *notify_addr = NULL;
 786         dma_addr_t notify_pa = 0;
 787         char name[NAME_MAX];
 788         static u32 instance;
 789
 790         if (vdev->notify || vdev->notify_pa) {
 791                 return vnic_dev_notify_setcmd(vdev, vdev->notify,
 792                                               vdev->notify_pa, intr);
 793         }
 794         if (!vnic_dev_in_reset(vdev)) {
 795                 snprintf((char *)name, sizeof(name),
 796                         "vnic_notify-%d", instance++);
 797                 notify_addr = vdev->alloc_consistent(vdev->priv,
 798                         sizeof(struct vnic_devcmd_notify),
 799                         &notify_pa, (u8 *)name);
 800                 if (!notify_addr)
 801                         return -ENOMEM;
 802         }
 803
 804         return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
 805 }
 806
 807 int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
 808 {
 809         u64 a0, a1;
 810         int wait = 1000;
 811         int err;
 812
 813         a0 = 0;  /* paddr = 0 to unset notify buffer */
 814         a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
 815         a1 += sizeof(struct vnic_devcmd_notify);
 816
 817         err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 818         if (!vnic_dev_in_reset(vdev)) {
 819                 vdev->notify = NULL;
 820                 vdev->notify_pa = 0;
 821                 vdev->notify_sz = 0;
 822         }
 823
 824         return err;
 825 }
 826
 827 int vnic_dev_notify_unset(struct vnic_dev *vdev)
 828 {
 829         if (vdev->notify && !vnic_dev_in_reset(vdev)) {
 830                 vdev->free_consistent(vdev->priv,
 831                         sizeof(struct vnic_devcmd_notify),
 832                         vdev->notify,
 833                         vdev->notify_pa);
 834         }
 835
 836         return vnic_dev_notify_unsetcmd(vdev);
 837 }
 838
 839 static int vnic_dev_notify_ready(struct vnic_dev *vdev)
 840 {
 841         u32 *words;
 842         unsigned int nwords = vdev->notify_sz / 4;
 843         unsigned int i;
 844         u32 csum;
 845
 846         if (!vdev->notify || !vdev->notify_sz)
 847                 return 0;
 848
 849         do {
 850                 csum = 0;
 851                 rte_memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
 852                 words = (u32 *)&vdev->notify_copy;
 853                 for (i = 1; i < nwords; i++)
 854                         csum += words[i];
 855         } while (csum != words[0]);
 856
 857         return 1;
 858 }
 859
 860 int vnic_dev_init(struct vnic_dev *vdev, int arg)
 861 {
 862         u64 a0 = (u32)arg, a1 = 0;
 863         int wait = 1000;
 864         int r = 0;
 865
 866         if (vnic_dev_capable(vdev, CMD_INIT))
 867                 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
 868         else {
 869                 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
 870                 if (a0 & CMD_INITF_DEFAULT_MAC) {
 871                         /* Emulate these for old CMD_INIT_v1 which
 872                          * didn't pass a0 so no CMD_INITF_*.
 873                          */
 874                         vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 875                         vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 876                 }
 877         }
 878         return r;
 879 }
 880
 881 int vnic_dev_deinit(struct vnic_dev *vdev)
 882 {
 883         u64 a0 = 0, a1 = 0;
 884         int wait = 1000;
 885
 886         return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
 887 }
 888
 889 void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
 890 {
 891         /* Default: hardware intr coal timer is in units of 1.5 usecs */
 892         vdev->intr_coal_timer_info.mul = 2;
 893         vdev->intr_coal_timer_info.div = 3;
 894         vdev->intr_coal_timer_info.max_usec =
 895                 vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
 896 }
 897
 898 int vnic_dev_link_status(struct vnic_dev *vdev)
 899 {
 900         if (!vnic_dev_notify_ready(vdev))
 901                 return 0;
 902
 903         return vdev->notify_copy.link_state;
 904 }
 905
 906 u32 vnic_dev_port_speed(struct vnic_dev *vdev)
 907 {
 908         if (!vnic_dev_notify_ready(vdev))
 909                 return 0;
 910
 911         return vdev->notify_copy.port_speed;
 912 }
 913
 914 void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
 915         enum vnic_dev_intr_mode intr_mode)
 916 {
 917         vdev->intr_mode = intr_mode;
 918 }
 919
 920 enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
 921         struct vnic_dev *vdev)
 922 {
 923         return vdev->intr_mode;
 924 }
 925
 926 u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
 927 {
 928         return (usec * vdev->intr_coal_timer_info.mul) /
 929                 vdev->intr_coal_timer_info.div;
 930 }
 931
 932 u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
 933 {
 934         return (hw_cycles * vdev->intr_coal_timer_info.div) /
 935                 vdev->intr_coal_timer_info.mul;
 936 }
 937
 938 u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
 939 {
 940         return vdev->intr_coal_timer_info.max_usec;
 941 }
 942
 943 void vnic_dev_unregister(struct vnic_dev *vdev)
 944 {
 945         if (vdev) {
 946                 if (vdev->notify)
 947                         vdev->free_consistent(vdev->priv,
 948                                 sizeof(struct vnic_devcmd_notify),
 949                                 vdev->notify,
 950                                 vdev->notify_pa);
 951                 if (vdev->stats)
 952                         vdev->free_consistent(vdev->priv,
 953                                 sizeof(struct vnic_stats),
 954                                 vdev->stats, vdev->stats_pa);
 955                 if (vdev->fw_info)
 956                         vdev->free_consistent(vdev->priv,
 957                                 sizeof(struct vnic_devcmd_fw_info),
 958                                 vdev->fw_info, vdev->fw_info_pa);
 959                 kfree(vdev);
 960         }
 961 }
 962
 963 struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
 964         void *priv, struct rte_pci_device *pdev, struct vnic_dev_bar *bar,
 965         unsigned int num_bars)
 966 {
 967         if (!vdev) {
 968                 vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
 969                 if (!vdev)
 970                         return NULL;
 971         }
 972
 973         vdev->priv = priv;
 974         vdev->pdev = pdev;
 975
 976         if (vnic_dev_discover_res(vdev, bar, num_bars))
 977                 goto err_out;
 978
 979         vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
 980         if (!vdev->devcmd)
 981                 goto err_out;
 982
 983         return vdev;
 984
 985 err_out:
 986         vnic_dev_unregister(vdev);
 987         return NULL;
 988 }
 989
 990 struct rte_pci_device *vnic_dev_get_pdev(struct vnic_dev *vdev)
 991 {
 992         return vdev->pdev;
 993 }
 994
 995 int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
 996 {
 997         u64 a0, a1 = 0;
 998         int wait = 1000;
 999         int i;
1000
1001         for (i = 0; i < ETH_ALEN; i++)
1002                 ((u8 *)&a0)[i] = mac_addr[i];
1003
1004         return vnic_dev_cmd(vdev, CMD_SET_MAC_ADDR, &a0, &a1, wait);
1005 }
1006
1007 /*
1008  *  vnic_dev_classifier: Add/Delete classifier entries
1009  *  @vdev: vdev of the device
1010  *  @cmd: CLSF_ADD for Add filter
1011  *        CLSF_DEL for Delete filter
1012  *  @entry: In case of ADD filter, the caller passes the RQ number in this
1013  *          variable.
1014  *          This function stores the filter_id returned by the
1015  *          firmware in the same variable before return;
1016  *
1017  *          In case of DEL filter, the caller passes the RQ number. Return
1018  *          value is irrelevant.
1019  * @data: filter data
1020  */
1021 int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,
1022         struct filter_v2 *data)
1023 {
1024         u64 a0, a1;
1025         int wait = 1000;
1026         dma_addr_t tlv_pa;
1027         int ret = -EINVAL;
1028         struct filter_tlv *tlv, *tlv_va;
1029         struct filter_action *action;
1030         u64 tlv_size;
1031         u32 filter_size;
1032         static unsigned int unique_id;
1033         char z_name[RTE_MEMZONE_NAMESIZE];
1034         enum vnic_devcmd_cmd dev_cmd;
1035
1036
1037         if (cmd == CLSF_ADD) {
1038                 if (data->type == FILTER_DPDK_1)
1039                         dev_cmd = CMD_ADD_ADV_FILTER;
1040                 else
1041                         dev_cmd = CMD_ADD_FILTER;
1042
1043                 filter_size = vnic_filter_size(data);
1044                 tlv_size = filter_size +
1045                     sizeof(struct filter_action) +
1046                     2*sizeof(struct filter_tlv);
1047                 snprintf((char *)z_name, sizeof(z_name),
1048                         "vnic_clsf_%d", unique_id++);
1049                 tlv_va = vdev->alloc_consistent(vdev->priv,
1050                         tlv_size, &tlv_pa, (u8 *)z_name);
1051                 if (!tlv_va)
1052                         return -ENOMEM;
1053                 tlv = tlv_va;
1054                 a0 = tlv_pa;
1055                 a1 = tlv_size;
1056                 memset(tlv, 0, tlv_size);
1057                 tlv->type = CLSF_TLV_FILTER;
1058                 tlv->length = filter_size;
1059                 memcpy(&tlv->val, (void *)data, filter_size);
1060
1061                 tlv = (struct filter_tlv *)((char *)tlv +
1062                                          sizeof(struct filter_tlv) +
1063                                          filter_size);
1064
1065                 tlv->type = CLSF_TLV_ACTION;
1066                 tlv->length = sizeof(struct filter_action);
1067                 action = (struct filter_action *)&tlv->val;
1068                 action->type = FILTER_ACTION_RQ_STEERING;
1069                 action->u.rq_idx = *entry;
1070
1071                 ret = vnic_dev_cmd(vdev, dev_cmd, &a0, &a1, wait);
1072                 *entry = (u16)a0;
1073                 vdev->free_consistent(vdev->priv, tlv_size, tlv_va, tlv_pa);
1074         } else if (cmd == CLSF_DEL) {
1075                 a0 = *entry;
1076                 ret = vnic_dev_cmd(vdev, CMD_DEL_FILTER, &a0, &a1, wait);
1077         }
1078
1079         return ret;
1080 }