drivers/net/ethernet/cisco/enic/vnic_dev.c

   1 /*
   2  * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  *
   5  * This program is free software; you may redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  10  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  11  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  12  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  13  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  14  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  15  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  16  * SOFTWARE.
  17  *
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/errno.h>
  22 #include <linux/types.h>
  23 #include <linux/pci.h>
  24 #include <linux/delay.h>
  25 #include <linux/if_ether.h>
  26
  27 #include "vnic_resource.h"
  28 #include "vnic_devcmd.h"
  29 #include "vnic_dev.h"
  30 #include "vnic_stats.h"
  31
  32 enum vnic_proxy_type {
  33         PROXY_NONE,
  34         PROXY_BY_BDF,
  35         PROXY_BY_INDEX,
  36 };
  37
  38 struct vnic_res {
  39         void __iomem *vaddr;
  40         dma_addr_t bus_addr;
  41         unsigned int count;
  42 };
  43
  44 struct vnic_intr_coal_timer_info {
  45         u32 mul;
  46         u32 div;
  47         u32 max_usec;
  48 };
  49
  50 struct vnic_dev {
  51         void *priv;
  52         struct pci_dev *pdev;
  53         struct vnic_res res[RES_TYPE_MAX];
  54         enum vnic_dev_intr_mode intr_mode;
  55         struct vnic_devcmd __iomem *devcmd;
  56         struct vnic_devcmd_notify *notify;
  57         struct vnic_devcmd_notify notify_copy;
  58         dma_addr_t notify_pa;
  59         u32 notify_sz;
  60         dma_addr_t linkstatus_pa;
  61         struct vnic_stats *stats;
  62         dma_addr_t stats_pa;
  63         struct vnic_devcmd_fw_info *fw_info;
  64         dma_addr_t fw_info_pa;
  65         enum vnic_proxy_type proxy;
  66         u32 proxy_index;
  67         u64 args[VNIC_DEVCMD_NARGS];
  68         struct vnic_intr_coal_timer_info intr_coal_timer_info;
  69 };
  70
  71 #define VNIC_MAX_RES_HDR_SIZE \
  72         (sizeof(struct vnic_resource_header) + \
  73         sizeof(struct vnic_resource) * RES_TYPE_MAX)
  74 #define VNIC_RES_STRIDE 128
  75
  76 void *vnic_dev_priv(struct vnic_dev *vdev)
  77 {
  78         return vdev->priv;
  79 }
  80
  81 static int vnic_dev_discover_res(struct vnic_dev *vdev,
  82         struct vnic_dev_bar *bar, unsigned int num_bars)
  83 {
  84         struct vnic_resource_header __iomem *rh;
  85         struct mgmt_barmap_hdr __iomem *mrh;
  86         struct vnic_resource __iomem *r;
  87         u8 type;
  88
  89         if (num_bars == 0)
  90                 return -EINVAL;
  91
  92         if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
  93                 pr_err("vNIC BAR0 res hdr length error\n");
  94                 return -EINVAL;
  95         }
  96
  97         rh  = bar->vaddr;
  98         mrh = bar->vaddr;
  99         if (!rh) {
 100                 pr_err("vNIC BAR0 res hdr not mem-mapped\n");
 101                 return -EINVAL;
 102         }
 103
 104         /* Check for mgmt vnic in addition to normal vnic */
 105         if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) ||
 106                 (ioread32(&rh->version) != VNIC_RES_VERSION)) {
 107                 if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) ||
 108                         (ioread32(&mrh->version) != MGMTVNIC_VERSION)) {
 109                         pr_err("vNIC BAR0 res magic/version error "
 110                         "exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n",
 111                         VNIC_RES_MAGIC, VNIC_RES_VERSION,
 112                         MGMTVNIC_MAGIC, MGMTVNIC_VERSION,
 113                         ioread32(&rh->magic), ioread32(&rh->version));
 114                         return -EINVAL;
 115                 }
 116         }
 117
 118         if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC)
 119                 r = (struct vnic_resource __iomem *)(mrh + 1);
 120         else
 121                 r = (struct vnic_resource __iomem *)(rh + 1);
 122
 123
 124         while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
 125
 126                 u8 bar_num = ioread8(&r->bar);
 127                 u32 bar_offset = ioread32(&r->bar_offset);
 128                 u32 count = ioread32(&r->count);
 129                 u32 len;
 130
 131                 r++;
 132
 133                 if (bar_num >= num_bars)
 134                         continue;
 135
 136                 if (!bar[bar_num].len || !bar[bar_num].vaddr)
 137                         continue;
 138
 139                 switch (type) {
 140                 case RES_TYPE_WQ:
 141                 case RES_TYPE_RQ:
 142                 case RES_TYPE_CQ:
 143                 case RES_TYPE_INTR_CTRL:
 144                         /* each count is stride bytes long */
 145                         len = count * VNIC_RES_STRIDE;
 146                         if (len + bar_offset > bar[bar_num].len) {
 147                                 pr_err("vNIC BAR0 resource %d "
 148                                         "out-of-bounds, offset 0x%x + "
 149                                         "size 0x%x > bar len 0x%lx\n",
 150                                         type, bar_offset,
 151                                         len,
 152                                         bar[bar_num].len);
 153                                 return -EINVAL;
 154                         }
 155                         break;
 156                 case RES_TYPE_INTR_PBA_LEGACY:
 157                 case RES_TYPE_DEVCMD:
 158                         len = count;
 159                         break;
 160                 default:
 161                         continue;
 162                 }
 163
 164                 vdev->res[type].count = count;
 165                 vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
 166                         bar_offset;
 167                 vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
 168         }
 169
 170         return 0;
 171 }
 172
 173 unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
 174         enum vnic_res_type type)
 175 {
 176         return vdev->res[type].count;
 177 }
 178
 179 void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
 180         unsigned int index)
 181 {
 182         if (!vdev->res[type].vaddr)
 183                 return NULL;
 184
 185         switch (type) {
 186         case RES_TYPE_WQ:
 187         case RES_TYPE_RQ:
 188         case RES_TYPE_CQ:
 189         case RES_TYPE_INTR_CTRL:
 190                 return (char __iomem *)vdev->res[type].vaddr +
 191                         index * VNIC_RES_STRIDE;
 192         default:
 193                 return (char __iomem *)vdev->res[type].vaddr;
 194         }
 195 }
 196
 197 static unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
 198         unsigned int desc_count, unsigned int desc_size)
 199 {
 200         /* The base address of the desc rings must be 512 byte aligned.
 201          * Descriptor count is aligned to groups of 32 descriptors.  A
 202          * count of 0 means the maximum 4096 descriptors.  Descriptor
 203          * size is aligned to 16 bytes.
 204          */
 205
 206         unsigned int count_align = 32;
 207         unsigned int desc_align = 16;
 208
 209         ring->base_align = 512;
 210
 211         if (desc_count == 0)
 212                 desc_count = 4096;
 213
 214         ring->desc_count = ALIGN(desc_count, count_align);
 215
 216         ring->desc_size = ALIGN(desc_size, desc_align);
 217
 218         ring->size = ring->desc_count * ring->desc_size;
 219         ring->size_unaligned = ring->size + ring->base_align;
 220
 221         return ring->size_unaligned;
 222 }
 223
 224 void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
 225 {
 226         memset(ring->descs, 0, ring->size);
 227 }
 228
 229 int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
 230         unsigned int desc_count, unsigned int desc_size)
 231 {
 232         vnic_dev_desc_ring_size(ring, desc_count, desc_size);
 233
 234         ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
 235                 ring->size_unaligned,
 236                 &ring->base_addr_unaligned);
 237
 238         if (!ring->descs_unaligned) {
 239                 pr_err("Failed to allocate ring (size=%d), aborting\n",
 240                         (int)ring->size);
 241                 return -ENOMEM;
 242         }
 243
 244         ring->base_addr = ALIGN(ring->base_addr_unaligned,
 245                 ring->base_align);
 246         ring->descs = (u8 *)ring->descs_unaligned +
 247                 (ring->base_addr - ring->base_addr_unaligned);
 248
 249         vnic_dev_clear_desc_ring(ring);
 250
 251         ring->desc_avail = ring->desc_count - 1;
 252
 253         return 0;
 254 }
 255
 256 void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
 257 {
 258         if (ring->descs) {
 259                 pci_free_consistent(vdev->pdev,
 260                         ring->size_unaligned,
 261                         ring->descs_unaligned,
 262                         ring->base_addr_unaligned);
 263                 ring->descs = NULL;
 264         }
 265 }
 266
 267 static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 268         int wait)
 269 {
 270         struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
 271         unsigned int i;
 272         int delay;
 273         u32 status;
 274         int err;
 275
 276         status = ioread32(&devcmd->status);
 277         if (status == 0xFFFFFFFF) {
 278                 /* PCI-e target device is gone */
 279                 return -ENODEV;
 280         }
 281         if (status & STAT_BUSY) {
 282                 pr_err("Busy devcmd %d\n", _CMD_N(cmd));
 283                 return -EBUSY;
 284         }
 285
 286         if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
 287                 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
 288                         writeq(vdev->args[i], &devcmd->args[i]);
 289                 wmb();
 290         }
 291
 292         iowrite32(cmd, &devcmd->cmd);
 293
 294         if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
 295                 return 0;
 296
 297         for (delay = 0; delay < wait; delay++) {
 298
 299                 udelay(100);
 300
 301                 status = ioread32(&devcmd->status);
 302                 if (status == 0xFFFFFFFF) {
 303                         /* PCI-e target device is gone */
 304                         return -ENODEV;
 305                 }
 306
 307                 if (!(status & STAT_BUSY)) {
 308
 309                         if (status & STAT_ERROR) {
 310                                 err = (int)readq(&devcmd->args[0]);
 311                                 if (err != ERR_ECMDUNKNOWN ||
 312                                     cmd != CMD_CAPABILITY)
 313                                         pr_err("Error %d devcmd %d\n",
 314                                                 err, _CMD_N(cmd));
 315                                 return err;
 316                         }
 317
 318                         if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
 319                                 rmb();
 320                                 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
 321                                         vdev->args[i] = readq(&devcmd->args[i]);
 322                         }
 323
 324                         return 0;
 325                 }
 326         }
 327
 328         pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
 329         return -ETIMEDOUT;
 330 }
 331
 332 static int vnic_dev_cmd_proxy(struct vnic_dev *vdev,
 333         enum vnic_devcmd_cmd proxy_cmd, enum vnic_devcmd_cmd cmd,
 334         u64 *a0, u64 *a1, int wait)
 335 {
 336         u32 status;
 337         int err;
 338
 339         memset(vdev->args, 0, sizeof(vdev->args));
 340
 341         vdev->args[0] = vdev->proxy_index;
 342         vdev->args[1] = cmd;
 343         vdev->args[2] = *a0;
 344         vdev->args[3] = *a1;
 345
 346         err = _vnic_dev_cmd(vdev, proxy_cmd, wait);
 347         if (err)
 348                 return err;
 349
 350         status = (u32)vdev->args[0];
 351         if (status & STAT_ERROR) {
 352                 err = (int)vdev->args[1];
 353                 if (err != ERR_ECMDUNKNOWN ||
 354                     cmd != CMD_CAPABILITY)
 355                         pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd));
 356                 return err;
 357         }
 358
 359         *a0 = vdev->args[1];
 360         *a1 = vdev->args[2];
 361
 362         return 0;
 363 }
 364
 365 static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
 366         enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
 367 {
 368         int err;
 369
 370         vdev->args[0] = *a0;
 371         vdev->args[1] = *a1;
 372
 373         err = _vnic_dev_cmd(vdev, cmd, wait);
 374
 375         *a0 = vdev->args[0];
 376         *a1 = vdev->args[1];
 377
 378         return err;
 379 }
 380
 381 void vnic_dev_cmd_proxy_by_index_start(struct vnic_dev *vdev, u16 index)
 382 {
 383         vdev->proxy = PROXY_BY_INDEX;
 384         vdev->proxy_index = index;
 385 }
 386
 387 void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev)
 388 {
 389         vdev->proxy = PROXY_NONE;
 390         vdev->proxy_index = 0;
 391 }
 392
 393 int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 394         u64 *a0, u64 *a1, int wait)
 395 {
 396         memset(vdev->args, 0, sizeof(vdev->args));
 397
 398         switch (vdev->proxy) {
 399         case PROXY_BY_INDEX:
 400                 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
 401                                 a0, a1, wait);
 402         case PROXY_BY_BDF:
 403                 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
 404                                 a0, a1, wait);
 405         case PROXY_NONE:
 406         default:
 407                 return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait);
 408         }
 409 }
 410
 411 static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
 412 {
 413         u64 a0 = (u32)cmd, a1 = 0;
 414         int wait = 1000;
 415         int err;
 416
 417         err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
 418
 419         return !(err || a0);
 420 }
 421
 422 int vnic_dev_fw_info(struct vnic_dev *vdev,
 423         struct vnic_devcmd_fw_info **fw_info)
 424 {
 425         u64 a0, a1 = 0;
 426         int wait = 1000;
 427         int err = 0;
 428
 429         if (!vdev->fw_info) {
 430                 vdev->fw_info = pci_alloc_consistent(vdev->pdev,
 431                         sizeof(struct vnic_devcmd_fw_info),
 432                         &vdev->fw_info_pa);
 433                 if (!vdev->fw_info)
 434                         return -ENOMEM;
 435
 436                 memset(vdev->fw_info, 0, sizeof(struct vnic_devcmd_fw_info));
 437
 438                 a0 = vdev->fw_info_pa;
 439                 a1 = sizeof(struct vnic_devcmd_fw_info);
 440
 441                 /* only get fw_info once and cache it */
 442                 if (vnic_dev_capable(vdev, CMD_MCPU_FW_INFO))
 443                         err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO,
 444                                 &a0, &a1, wait);
 445                 else
 446                         err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO_OLD,
 447                                 &a0, &a1, wait);
 448         }
 449
 450         *fw_info = vdev->fw_info;
 451
 452         return err;
 453 }
 454
 455 int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
 456         void *value)
 457 {
 458         u64 a0, a1;
 459         int wait = 1000;
 460         int err;
 461
 462         a0 = offset;
 463         a1 = size;
 464
 465         err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
 466
 467         switch (size) {
 468         case 1: *(u8 *)value = (u8)a0; break;
 469         case 2: *(u16 *)value = (u16)a0; break;
 470         case 4: *(u32 *)value = (u32)a0; break;
 471         case 8: *(u64 *)value = a0; break;
 472         default: BUG(); break;
 473         }
 474
 475         return err;
 476 }
 477
 478 int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
 479 {
 480         u64 a0, a1;
 481         int wait = 1000;
 482
 483         if (!vdev->stats) {
 484                 vdev->stats = pci_alloc_consistent(vdev->pdev,
 485                         sizeof(struct vnic_stats), &vdev->stats_pa);
 486                 if (!vdev->stats)
 487                         return -ENOMEM;
 488         }
 489
 490         *stats = vdev->stats;
 491         a0 = vdev->stats_pa;
 492         a1 = sizeof(struct vnic_stats);
 493
 494         return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
 495 }
 496
 497 int vnic_dev_close(struct vnic_dev *vdev)
 498 {
 499         u64 a0 = 0, a1 = 0;
 500         int wait = 1000;
 501         return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
 502 }
 503
 504 int vnic_dev_enable_wait(struct vnic_dev *vdev)
 505 {
 506         u64 a0 = 0, a1 = 0;
 507         int wait = 1000;
 508
 509         if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
 510                 return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
 511         else
 512                 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
 513 }
 514
 515 int vnic_dev_disable(struct vnic_dev *vdev)
 516 {
 517         u64 a0 = 0, a1 = 0;
 518         int wait = 1000;
 519         return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
 520 }
 521
 522 int vnic_dev_open(struct vnic_dev *vdev, int arg)
 523 {
 524         u64 a0 = (u32)arg, a1 = 0;
 525         int wait = 1000;
 526         return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
 527 }
 528
 529 int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
 530 {
 531         u64 a0 = 0, a1 = 0;
 532         int wait = 1000;
 533         int err;
 534
 535         *done = 0;
 536
 537         err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
 538         if (err)
 539                 return err;
 540
 541         *done = (a0 == 0);
 542
 543         return 0;
 544 }
 545
 546 static int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
 547 {
 548         u64 a0 = (u32)arg, a1 = 0;
 549         int wait = 1000;
 550         return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
 551 }
 552
 553 static int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
 554 {
 555         u64 a0 = 0, a1 = 0;
 556         int wait = 1000;
 557         int err;
 558
 559         *done = 0;
 560
 561         err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
 562         if (err)
 563                 return err;
 564
 565         *done = (a0 == 0);
 566
 567         return 0;
 568 }
 569
 570 int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg)
 571 {
 572         u64 a0 = (u32)arg, a1 = 0;
 573         int wait = 1000;
 574         int err;
 575
 576         if (vnic_dev_capable(vdev, CMD_HANG_RESET)) {
 577                 return vnic_dev_cmd(vdev, CMD_HANG_RESET,
 578                                 &a0, &a1, wait);
 579         } else {
 580                 err = vnic_dev_soft_reset(vdev, arg);
 581                 if (err)
 582                         return err;
 583                 return vnic_dev_init(vdev, 0);
 584         }
 585 }
 586
 587 int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done)
 588 {
 589         u64 a0 = 0, a1 = 0;
 590         int wait = 1000;
 591         int err;
 592
 593         *done = 0;
 594
 595         if (vnic_dev_capable(vdev, CMD_HANG_RESET_STATUS)) {
 596                 err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS,
 597                                 &a0, &a1, wait);
 598                 if (err)
 599                         return err;
 600         } else {
 601                 return vnic_dev_soft_reset_done(vdev, done);
 602         }
 603
 604         *done = (a0 == 0);
 605
 606         return 0;
 607 }
 608
 609 int vnic_dev_hang_notify(struct vnic_dev *vdev)
 610 {
 611         u64 a0, a1;
 612         int wait = 1000;
 613         return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
 614 }
 615
 616 int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
 617 {
 618         u64 a0, a1;
 619         int wait = 1000;
 620         int err, i;
 621
 622         for (i = 0; i < ETH_ALEN; i++)
 623                 mac_addr[i] = 0;
 624
 625         err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 626         if (err)
 627                 return err;
 628
 629         for (i = 0; i < ETH_ALEN; i++)
 630                 mac_addr[i] = ((u8 *)&a0)[i];
 631
 632         return 0;
 633 }
 634
 635 int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
 636         int broadcast, int promisc, int allmulti)
 637 {
 638         u64 a0, a1 = 0;
 639         int wait = 1000;
 640         int err;
 641
 642         a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
 643              (multicast ? CMD_PFILTER_MULTICAST : 0) |
 644              (broadcast ? CMD_PFILTER_BROADCAST : 0) |
 645              (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
 646              (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
 647
 648         err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
 649         if (err)
 650                 pr_err("Can't set packet filter\n");
 651
 652         return err;
 653 }
 654
 655 int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
 656 {
 657         u64 a0 = 0, a1 = 0;
 658         int wait = 1000;
 659         int err;
 660         int i;
 661
 662         for (i = 0; i < ETH_ALEN; i++)
 663                 ((u8 *)&a0)[i] = addr[i];
 664
 665         err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 666         if (err)
 667                 pr_err("Can't add addr [%pM], %d\n", addr, err);
 668
 669         return err;
 670 }
 671
 672 int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
 673 {
 674         u64 a0 = 0, a1 = 0;
 675         int wait = 1000;
 676         int err;
 677         int i;
 678
 679         for (i = 0; i < ETH_ALEN; i++)
 680                 ((u8 *)&a0)[i] = addr[i];
 681
 682         err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
 683         if (err)
 684                 pr_err("Can't del addr [%pM], %d\n", addr, err);
 685
 686         return err;
 687 }
 688
 689 int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
 690         u8 ig_vlan_rewrite_mode)
 691 {
 692         u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
 693         int wait = 1000;
 694
 695         if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
 696                 return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
 697                                 &a0, &a1, wait);
 698         else
 699                 return 0;
 700 }
 701
 702 static int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
 703         void *notify_addr, dma_addr_t notify_pa, u16 intr)
 704 {
 705         u64 a0, a1;
 706         int wait = 1000;
 707         int r;
 708
 709         memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
 710         vdev->notify = notify_addr;
 711         vdev->notify_pa = notify_pa;
 712
 713         a0 = (u64)notify_pa;
 714         a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
 715         a1 += sizeof(struct vnic_devcmd_notify);
 716
 717         r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 718         vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
 719         return r;
 720 }
 721
 722 int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
 723 {
 724         void *notify_addr;
 725         dma_addr_t notify_pa;
 726
 727         if (vdev->notify || vdev->notify_pa) {
 728                 pr_err("notify block %p still allocated", vdev->notify);
 729                 return -EINVAL;
 730         }
 731
 732         notify_addr = pci_alloc_consistent(vdev->pdev,
 733                         sizeof(struct vnic_devcmd_notify),
 734                         &notify_pa);
 735         if (!notify_addr)
 736                 return -ENOMEM;
 737
 738         return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
 739 }
 740
 741 static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
 742 {
 743         u64 a0, a1;
 744         int wait = 1000;
 745         int err;
 746
 747         a0 = 0;  /* paddr = 0 to unset notify buffer */
 748         a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
 749         a1 += sizeof(struct vnic_devcmd_notify);
 750
 751         err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 752         vdev->notify = NULL;
 753         vdev->notify_pa = 0;
 754         vdev->notify_sz = 0;
 755
 756         return err;
 757 }
 758
 759 int vnic_dev_notify_unset(struct vnic_dev *vdev)
 760 {
 761         if (vdev->notify) {
 762                 pci_free_consistent(vdev->pdev,
 763                         sizeof(struct vnic_devcmd_notify),
 764                         vdev->notify,
 765                         vdev->notify_pa);
 766         }
 767
 768         return vnic_dev_notify_unsetcmd(vdev);
 769 }
 770
 771 static int vnic_dev_notify_ready(struct vnic_dev *vdev)
 772 {
 773         u32 *words;
 774         unsigned int nwords = vdev->notify_sz / 4;
 775         unsigned int i;
 776         u32 csum;
 777
 778         if (!vdev->notify || !vdev->notify_sz)
 779                 return 0;
 780
 781         do {
 782                 csum = 0;
 783                 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
 784                 words = (u32 *)&vdev->notify_copy;
 785                 for (i = 1; i < nwords; i++)
 786                         csum += words[i];
 787         } while (csum != words[0]);
 788
 789         return 1;
 790 }
 791
 792 int vnic_dev_init(struct vnic_dev *vdev, int arg)
 793 {
 794         u64 a0 = (u32)arg, a1 = 0;
 795         int wait = 1000;
 796         int r = 0;
 797
 798         if (vnic_dev_capable(vdev, CMD_INIT))
 799                 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
 800         else {
 801                 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
 802                 if (a0 & CMD_INITF_DEFAULT_MAC) {
 803                         /* Emulate these for old CMD_INIT_v1 which
 804                          * didn't pass a0 so no CMD_INITF_*.
 805                          */
 806                         vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 807                         vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 808                 }
 809         }
 810         return r;
 811 }
 812
 813 int vnic_dev_deinit(struct vnic_dev *vdev)
 814 {
 815         u64 a0 = 0, a1 = 0;
 816         int wait = 1000;
 817
 818         return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
 819 }
 820
 821 void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
 822 {
 823         /* Default: hardware intr coal timer is in units of 1.5 usecs */
 824         vdev->intr_coal_timer_info.mul = 2;
 825         vdev->intr_coal_timer_info.div = 3;
 826         vdev->intr_coal_timer_info.max_usec =
 827                 vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
 828 }
 829
 830 int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev)
 831 {
 832         int wait = 1000;
 833         int err;
 834
 835         memset(vdev->args, 0, sizeof(vdev->args));
 836
 837         if (vnic_dev_capable(vdev, CMD_INTR_COAL_CONVERT))
 838                 err = _vnic_dev_cmd(vdev, CMD_INTR_COAL_CONVERT, wait);
 839         else
 840                 err = ERR_ECMDUNKNOWN;
 841
 842         /* Use defaults when firmware doesn't support the devcmd at all or
 843          * supports it for only specific hardware
 844          */
 845         if ((err == ERR_ECMDUNKNOWN) ||
 846                 (!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) {
 847                 pr_warning("Using default conversion factor for "
 848                         "interrupt coalesce timer\n");
 849                 vnic_dev_intr_coal_timer_info_default(vdev);
 850                 return 0;
 851         }
 852
 853         if (!err) {
 854                 vdev->intr_coal_timer_info.mul = (u32) vdev->args[0];
 855                 vdev->intr_coal_timer_info.div = (u32) vdev->args[1];
 856                 vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2];
 857         }
 858
 859         return err;
 860 }
 861
 862 int vnic_dev_link_status(struct vnic_dev *vdev)
 863 {
 864         if (!vnic_dev_notify_ready(vdev))
 865                 return 0;
 866
 867         return vdev->notify_copy.link_state;
 868 }
 869
 870 u32 vnic_dev_port_speed(struct vnic_dev *vdev)
 871 {
 872         if (!vnic_dev_notify_ready(vdev))
 873                 return 0;
 874
 875         return vdev->notify_copy.port_speed;
 876 }
 877
 878 u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
 879 {
 880         if (!vnic_dev_notify_ready(vdev))
 881                 return 0;
 882
 883         return vdev->notify_copy.msglvl;
 884 }
 885
 886 u32 vnic_dev_mtu(struct vnic_dev *vdev)
 887 {
 888         if (!vnic_dev_notify_ready(vdev))
 889                 return 0;
 890
 891         return vdev->notify_copy.mtu;
 892 }
 893
 894 void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
 895         enum vnic_dev_intr_mode intr_mode)
 896 {
 897         vdev->intr_mode = intr_mode;
 898 }
 899
 900 enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
 901         struct vnic_dev *vdev)
 902 {
 903         return vdev->intr_mode;
 904 }
 905
 906 u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
 907 {
 908         return (usec * vdev->intr_coal_timer_info.mul) /
 909                 vdev->intr_coal_timer_info.div;
 910 }
 911
 912 u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
 913 {
 914         return (hw_cycles * vdev->intr_coal_timer_info.div) /
 915                 vdev->intr_coal_timer_info.mul;
 916 }
 917
 918 u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
 919 {
 920         return vdev->intr_coal_timer_info.max_usec;
 921 }
 922
 923 void vnic_dev_unregister(struct vnic_dev *vdev)
 924 {
 925         if (vdev) {
 926                 if (vdev->notify)
 927                         pci_free_consistent(vdev->pdev,
 928                                 sizeof(struct vnic_devcmd_notify),
 929                                 vdev->notify,
 930                                 vdev->notify_pa);
 931                 if (vdev->stats)
 932                         pci_free_consistent(vdev->pdev,
 933                                 sizeof(struct vnic_stats),
 934                                 vdev->stats, vdev->stats_pa);
 935                 if (vdev->fw_info)
 936                         pci_free_consistent(vdev->pdev,
 937                                 sizeof(struct vnic_devcmd_fw_info),
 938                                 vdev->fw_info, vdev->fw_info_pa);
 939                 kfree(vdev);
 940         }
 941 }
 942
 943 struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
 944         void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
 945         unsigned int num_bars)
 946 {
 947         if (!vdev) {
 948                 vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
 949                 if (!vdev)
 950                         return NULL;
 951         }
 952
 953         vdev->priv = priv;
 954         vdev->pdev = pdev;
 955
 956         if (vnic_dev_discover_res(vdev, bar, num_bars))
 957                 goto err_out;
 958
 959         vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
 960         if (!vdev->devcmd)
 961                 goto err_out;
 962
 963         return vdev;
 964
 965 err_out:
 966         vnic_dev_unregister(vdev);
 967         return NULL;
 968 }
 969
 970 int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len)
 971 {
 972         u64 a0, a1 = len;
 973         int wait = 1000;
 974         dma_addr_t prov_pa;
 975         void *prov_buf;
 976         int ret;
 977
 978         prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa);
 979         if (!prov_buf)
 980                 return -ENOMEM;
 981
 982         memcpy(prov_buf, buf, len);
 983
 984         a0 = prov_pa;
 985
 986         ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO2, &a0, &a1, wait);
 987
 988         pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa);
 989
 990         return ret;
 991 }
 992
 993 int vnic_dev_enable2(struct vnic_dev *vdev, int active)
 994 {
 995         u64 a0, a1 = 0;
 996         int wait = 1000;
 997
 998         a0 = (active ? CMD_ENABLE2_ACTIVE : 0);
 999
1000         return vnic_dev_cmd(vdev, CMD_ENABLE2, &a0, &a1, wait);
1001 }
1002
1003 static int vnic_dev_cmd_status(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
1004         int *status)
1005 {
1006         u64 a0 = cmd, a1 = 0;
1007         int wait = 1000;
1008         int ret;
1009
1010         ret = vnic_dev_cmd(vdev, CMD_STATUS, &a0, &a1, wait);
1011         if (!ret)
1012                 *status = (int)a0;
1013
1014         return ret;
1015 }
1016
1017 int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status)
1018 {
1019         return vnic_dev_cmd_status(vdev, CMD_ENABLE2, status);
1020 }
1021
1022 int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status)
1023 {
1024         return vnic_dev_cmd_status(vdev, CMD_DEINIT, status);
1025 }
1026
1027 int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
1028 {
1029         u64 a0, a1;
1030         int wait = 1000;
1031         int i;
1032
1033         for (i = 0; i < ETH_ALEN; i++)
1034                 ((u8 *)&a0)[i] = mac_addr[i];
1035
1036         return vnic_dev_cmd(vdev, CMD_SET_MAC_ADDR, &a0, &a1, wait);
1037 }