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 EXPORT_SYMBOL(vnic_dev_get_res_count);
 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 EXPORT_SYMBOL(vnic_dev_get_res);
 198
 199 static unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
 200         unsigned int desc_count, unsigned int desc_size)
 201 {
 202         /* The base address of the desc rings must be 512 byte aligned.
 203          * Descriptor count is aligned to groups of 32 descriptors.  A
 204          * count of 0 means the maximum 4096 descriptors.  Descriptor
 205          * size is aligned to 16 bytes.
 206          */
 207
 208         unsigned int count_align = 32;
 209         unsigned int desc_align = 16;
 210
 211         ring->base_align = 512;
 212
 213         if (desc_count == 0)
 214                 desc_count = 4096;
 215
 216         ring->desc_count = ALIGN(desc_count, count_align);
 217
 218         ring->desc_size = ALIGN(desc_size, desc_align);
 219
 220         ring->size = ring->desc_count * ring->desc_size;
 221         ring->size_unaligned = ring->size + ring->base_align;
 222
 223         return ring->size_unaligned;
 224 }
 225
 226 void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
 227 {
 228         memset(ring->descs, 0, ring->size);
 229 }
 230
 231 int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
 232         unsigned int desc_count, unsigned int desc_size)
 233 {
 234         vnic_dev_desc_ring_size(ring, desc_count, desc_size);
 235
 236         ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
 237                 ring->size_unaligned,
 238                 &ring->base_addr_unaligned);
 239
 240         if (!ring->descs_unaligned) {
 241                 pr_err("Failed to allocate ring (size=%d), aborting\n",
 242                         (int)ring->size);
 243                 return -ENOMEM;
 244         }
 245
 246         ring->base_addr = ALIGN(ring->base_addr_unaligned,
 247                 ring->base_align);
 248         ring->descs = (u8 *)ring->descs_unaligned +
 249                 (ring->base_addr - ring->base_addr_unaligned);
 250
 251         vnic_dev_clear_desc_ring(ring);
 252
 253         ring->desc_avail = ring->desc_count - 1;
 254
 255         return 0;
 256 }
 257
 258 void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
 259 {
 260         if (ring->descs) {
 261                 pci_free_consistent(vdev->pdev,
 262                         ring->size_unaligned,
 263                         ring->descs_unaligned,
 264                         ring->base_addr_unaligned);
 265                 ring->descs = NULL;
 266         }
 267 }
 268
 269 static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 270         int wait)
 271 {
 272         struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
 273         unsigned int i;
 274         int delay;
 275         u32 status;
 276         int err;
 277
 278         status = ioread32(&devcmd->status);
 279         if (status == 0xFFFFFFFF) {
 280                 /* PCI-e target device is gone */
 281                 return -ENODEV;
 282         }
 283         if (status & STAT_BUSY) {
 284                 pr_err("Busy devcmd %d\n", _CMD_N(cmd));
 285                 return -EBUSY;
 286         }
 287
 288         if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
 289                 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
 290                         writeq(vdev->args[i], &devcmd->args[i]);
 291                 wmb();
 292         }
 293
 294         iowrite32(cmd, &devcmd->cmd);
 295
 296         if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
 297                 return 0;
 298
 299         for (delay = 0; delay < wait; delay++) {
 300
 301                 udelay(100);
 302
 303                 status = ioread32(&devcmd->status);
 304                 if (status == 0xFFFFFFFF) {
 305                         /* PCI-e target device is gone */
 306                         return -ENODEV;
 307                 }
 308
 309                 if (!(status & STAT_BUSY)) {
 310
 311                         if (status & STAT_ERROR) {
 312                                 err = (int)readq(&devcmd->args[0]);
 313                                 if (err == ERR_EINVAL &&
 314                                     cmd == CMD_CAPABILITY)
 315                                         return err;
 316                                 if (err != ERR_ECMDUNKNOWN ||
 317                                     cmd != CMD_CAPABILITY)
 318                                         pr_err("Error %d devcmd %d\n",
 319                                                 err, _CMD_N(cmd));
 320                                 return err;
 321                         }
 322
 323                         if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
 324                                 rmb();
 325                                 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
 326                                         vdev->args[i] = readq(&devcmd->args[i]);
 327                         }
 328
 329                         return 0;
 330                 }
 331         }
 332
 333         pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
 334         return -ETIMEDOUT;
 335 }
 336
 337 static int vnic_dev_cmd_proxy(struct vnic_dev *vdev,
 338         enum vnic_devcmd_cmd proxy_cmd, enum vnic_devcmd_cmd cmd,
 339         u64 *a0, u64 *a1, int wait)
 340 {
 341         u32 status;
 342         int err;
 343
 344         memset(vdev->args, 0, sizeof(vdev->args));
 345
 346         vdev->args[0] = vdev->proxy_index;
 347         vdev->args[1] = cmd;
 348         vdev->args[2] = *a0;
 349         vdev->args[3] = *a1;
 350
 351         err = _vnic_dev_cmd(vdev, proxy_cmd, wait);
 352         if (err)
 353                 return err;
 354
 355         status = (u32)vdev->args[0];
 356         if (status & STAT_ERROR) {
 357                 err = (int)vdev->args[1];
 358                 if (err != ERR_ECMDUNKNOWN ||
 359                     cmd != CMD_CAPABILITY)
 360                         pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd));
 361                 return err;
 362         }
 363
 364         *a0 = vdev->args[1];
 365         *a1 = vdev->args[2];
 366
 367         return 0;
 368 }
 369
 370 static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
 371         enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
 372 {
 373         int err;
 374
 375         vdev->args[0] = *a0;
 376         vdev->args[1] = *a1;
 377
 378         err = _vnic_dev_cmd(vdev, cmd, wait);
 379
 380         *a0 = vdev->args[0];
 381         *a1 = vdev->args[1];
 382
 383         return err;
 384 }
 385
 386 void vnic_dev_cmd_proxy_by_index_start(struct vnic_dev *vdev, u16 index)
 387 {
 388         vdev->proxy = PROXY_BY_INDEX;
 389         vdev->proxy_index = index;
 390 }
 391
 392 void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev)
 393 {
 394         vdev->proxy = PROXY_NONE;
 395         vdev->proxy_index = 0;
 396 }
 397
 398 int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 399         u64 *a0, u64 *a1, int wait)
 400 {
 401         memset(vdev->args, 0, sizeof(vdev->args));
 402
 403         switch (vdev->proxy) {
 404         case PROXY_BY_INDEX:
 405                 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
 406                                 a0, a1, wait);
 407         case PROXY_BY_BDF:
 408                 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
 409                                 a0, a1, wait);
 410         case PROXY_NONE:
 411         default:
 412                 return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait);
 413         }
 414 }
 415
 416 static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
 417 {
 418         u64 a0 = (u32)cmd, a1 = 0;
 419         int wait = 1000;
 420         int err;
 421
 422         err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
 423
 424         return !(err || a0);
 425 }
 426
 427 int vnic_dev_fw_info(struct vnic_dev *vdev,
 428         struct vnic_devcmd_fw_info **fw_info)
 429 {
 430         u64 a0, a1 = 0;
 431         int wait = 1000;
 432         int err = 0;
 433
 434         if (!vdev->fw_info) {
 435                 vdev->fw_info = pci_alloc_consistent(vdev->pdev,
 436                         sizeof(struct vnic_devcmd_fw_info),
 437                         &vdev->fw_info_pa);
 438                 if (!vdev->fw_info)
 439                         return -ENOMEM;
 440
 441                 memset(vdev->fw_info, 0, sizeof(struct vnic_devcmd_fw_info));
 442
 443                 a0 = vdev->fw_info_pa;
 444                 a1 = sizeof(struct vnic_devcmd_fw_info);
 445
 446                 /* only get fw_info once and cache it */
 447                 if (vnic_dev_capable(vdev, CMD_MCPU_FW_INFO))
 448                         err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO,
 449                                 &a0, &a1, wait);
 450                 else
 451                         err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO_OLD,
 452                                 &a0, &a1, wait);
 453         }
 454
 455         *fw_info = vdev->fw_info;
 456
 457         return err;
 458 }
 459
 460 int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
 461         void *value)
 462 {
 463         u64 a0, a1;
 464         int wait = 1000;
 465         int err;
 466
 467         a0 = offset;
 468         a1 = size;
 469
 470         err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
 471
 472         switch (size) {
 473         case 1: *(u8 *)value = (u8)a0; break;
 474         case 2: *(u16 *)value = (u16)a0; break;
 475         case 4: *(u32 *)value = (u32)a0; break;
 476         case 8: *(u64 *)value = a0; break;
 477         default: BUG(); break;
 478         }
 479
 480         return err;
 481 }
 482
 483 int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
 484 {
 485         u64 a0, a1;
 486         int wait = 1000;
 487
 488         if (!vdev->stats) {
 489                 vdev->stats = pci_alloc_consistent(vdev->pdev,
 490                         sizeof(struct vnic_stats), &vdev->stats_pa);
 491                 if (!vdev->stats)
 492                         return -ENOMEM;
 493         }
 494
 495         *stats = vdev->stats;
 496         a0 = vdev->stats_pa;
 497         a1 = sizeof(struct vnic_stats);
 498
 499         return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
 500 }
 501
 502 int vnic_dev_close(struct vnic_dev *vdev)
 503 {
 504         u64 a0 = 0, a1 = 0;
 505         int wait = 1000;
 506         return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
 507 }
 508
 509 int vnic_dev_enable_wait(struct vnic_dev *vdev)
 510 {
 511         u64 a0 = 0, a1 = 0;
 512         int wait = 1000;
 513
 514         if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
 515                 return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
 516         else
 517                 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
 518 }
 519
 520 int vnic_dev_disable(struct vnic_dev *vdev)
 521 {
 522         u64 a0 = 0, a1 = 0;
 523         int wait = 1000;
 524         return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
 525 }
 526
 527 int vnic_dev_open(struct vnic_dev *vdev, int arg)
 528 {
 529         u64 a0 = (u32)arg, a1 = 0;
 530         int wait = 1000;
 531         return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
 532 }
 533
 534 int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
 535 {
 536         u64 a0 = 0, a1 = 0;
 537         int wait = 1000;
 538         int err;
 539
 540         *done = 0;
 541
 542         err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
 543         if (err)
 544                 return err;
 545
 546         *done = (a0 == 0);
 547
 548         return 0;
 549 }
 550
 551 static int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
 552 {
 553         u64 a0 = (u32)arg, a1 = 0;
 554         int wait = 1000;
 555         return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
 556 }
 557
 558 static int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
 559 {
 560         u64 a0 = 0, a1 = 0;
 561         int wait = 1000;
 562         int err;
 563
 564         *done = 0;
 565
 566         err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
 567         if (err)
 568                 return err;
 569
 570         *done = (a0 == 0);
 571
 572         return 0;
 573 }
 574
 575 int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg)
 576 {
 577         u64 a0 = (u32)arg, a1 = 0;
 578         int wait = 1000;
 579         int err;
 580
 581         if (vnic_dev_capable(vdev, CMD_HANG_RESET)) {
 582                 return vnic_dev_cmd(vdev, CMD_HANG_RESET,
 583                                 &a0, &a1, wait);
 584         } else {
 585                 err = vnic_dev_soft_reset(vdev, arg);
 586                 if (err)
 587                         return err;
 588                 return vnic_dev_init(vdev, 0);
 589         }
 590 }
 591
 592 int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done)
 593 {
 594         u64 a0 = 0, a1 = 0;
 595         int wait = 1000;
 596         int err;
 597
 598         *done = 0;
 599
 600         if (vnic_dev_capable(vdev, CMD_HANG_RESET_STATUS)) {
 601                 err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS,
 602                                 &a0, &a1, wait);
 603                 if (err)
 604                         return err;
 605         } else {
 606                 return vnic_dev_soft_reset_done(vdev, done);
 607         }
 608
 609         *done = (a0 == 0);
 610
 611         return 0;
 612 }
 613
 614 int vnic_dev_hang_notify(struct vnic_dev *vdev)
 615 {
 616         u64 a0, a1;
 617         int wait = 1000;
 618         return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
 619 }
 620
 621 int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
 622 {
 623         u64 a0, a1;
 624         int wait = 1000;
 625         int err, i;
 626
 627         for (i = 0; i < ETH_ALEN; i++)
 628                 mac_addr[i] = 0;
 629
 630         err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 631         if (err)
 632                 return err;
 633
 634         for (i = 0; i < ETH_ALEN; i++)
 635                 mac_addr[i] = ((u8 *)&a0)[i];
 636
 637         return 0;
 638 }
 639
 640 int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
 641         int broadcast, int promisc, int allmulti)
 642 {
 643         u64 a0, a1 = 0;
 644         int wait = 1000;
 645         int err;
 646
 647         a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
 648              (multicast ? CMD_PFILTER_MULTICAST : 0) |
 649              (broadcast ? CMD_PFILTER_BROADCAST : 0) |
 650              (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
 651              (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
 652
 653         err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
 654         if (err)
 655                 pr_err("Can't set packet filter\n");
 656
 657         return err;
 658 }
 659
 660 int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
 661 {
 662         u64 a0 = 0, a1 = 0;
 663         int wait = 1000;
 664         int err;
 665         int i;
 666
 667         for (i = 0; i < ETH_ALEN; i++)
 668                 ((u8 *)&a0)[i] = addr[i];
 669
 670         err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 671         if (err)
 672                 pr_err("Can't add addr [%pM], %d\n", addr, err);
 673
 674         return err;
 675 }
 676
 677 int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
 678 {
 679         u64 a0 = 0, a1 = 0;
 680         int wait = 1000;
 681         int err;
 682         int i;
 683
 684         for (i = 0; i < ETH_ALEN; i++)
 685                 ((u8 *)&a0)[i] = addr[i];
 686
 687         err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
 688         if (err)
 689                 pr_err("Can't del addr [%pM], %d\n", addr, err);
 690
 691         return err;
 692 }
 693
 694 int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
 695         u8 ig_vlan_rewrite_mode)
 696 {
 697         u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
 698         int wait = 1000;
 699
 700         if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
 701                 return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
 702                                 &a0, &a1, wait);
 703         else
 704                 return 0;
 705 }
 706
 707 static int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
 708         void *notify_addr, dma_addr_t notify_pa, u16 intr)
 709 {
 710         u64 a0, a1;
 711         int wait = 1000;
 712         int r;
 713
 714         memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
 715         vdev->notify = notify_addr;
 716         vdev->notify_pa = notify_pa;
 717
 718         a0 = (u64)notify_pa;
 719         a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
 720         a1 += sizeof(struct vnic_devcmd_notify);
 721
 722         r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 723         vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
 724         return r;
 725 }
 726
 727 int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
 728 {
 729         void *notify_addr;
 730         dma_addr_t notify_pa;
 731
 732         if (vdev->notify || vdev->notify_pa) {
 733                 pr_err("notify block %p still allocated", vdev->notify);
 734                 return -EINVAL;
 735         }
 736
 737         notify_addr = pci_alloc_consistent(vdev->pdev,
 738                         sizeof(struct vnic_devcmd_notify),
 739                         &notify_pa);
 740         if (!notify_addr)
 741                 return -ENOMEM;
 742
 743         return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
 744 }
 745
 746 static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
 747 {
 748         u64 a0, a1;
 749         int wait = 1000;
 750         int err;
 751
 752         a0 = 0;  /* paddr = 0 to unset notify buffer */
 753         a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
 754         a1 += sizeof(struct vnic_devcmd_notify);
 755
 756         err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 757         vdev->notify = NULL;
 758         vdev->notify_pa = 0;
 759         vdev->notify_sz = 0;
 760
 761         return err;
 762 }
 763
 764 int vnic_dev_notify_unset(struct vnic_dev *vdev)
 765 {
 766         if (vdev->notify) {
 767                 pci_free_consistent(vdev->pdev,
 768                         sizeof(struct vnic_devcmd_notify),
 769                         vdev->notify,
 770                         vdev->notify_pa);
 771         }
 772
 773         return vnic_dev_notify_unsetcmd(vdev);
 774 }
 775
 776 static int vnic_dev_notify_ready(struct vnic_dev *vdev)
 777 {
 778         u32 *words;
 779         unsigned int nwords = vdev->notify_sz / 4;
 780         unsigned int i;
 781         u32 csum;
 782
 783         if (!vdev->notify || !vdev->notify_sz)
 784                 return 0;
 785
 786         do {
 787                 csum = 0;
 788                 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
 789                 words = (u32 *)&vdev->notify_copy;
 790                 for (i = 1; i < nwords; i++)
 791                         csum += words[i];
 792         } while (csum != words[0]);
 793
 794         return 1;
 795 }
 796
 797 int vnic_dev_init(struct vnic_dev *vdev, int arg)
 798 {
 799         u64 a0 = (u32)arg, a1 = 0;
 800         int wait = 1000;
 801         int r = 0;
 802
 803         if (vnic_dev_capable(vdev, CMD_INIT))
 804                 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
 805         else {
 806                 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
 807                 if (a0 & CMD_INITF_DEFAULT_MAC) {
 808                         /* Emulate these for old CMD_INIT_v1 which
 809                          * didn't pass a0 so no CMD_INITF_*.
 810                          */
 811                         vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 812                         vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 813                 }
 814         }
 815         return r;
 816 }
 817
 818 int vnic_dev_deinit(struct vnic_dev *vdev)
 819 {
 820         u64 a0 = 0, a1 = 0;
 821         int wait = 1000;
 822
 823         return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
 824 }
 825
 826 void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
 827 {
 828         /* Default: hardware intr coal timer is in units of 1.5 usecs */
 829         vdev->intr_coal_timer_info.mul = 2;
 830         vdev->intr_coal_timer_info.div = 3;
 831         vdev->intr_coal_timer_info.max_usec =
 832                 vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
 833 }
 834
 835 int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev)
 836 {
 837         int wait = 1000;
 838         int err;
 839
 840         memset(vdev->args, 0, sizeof(vdev->args));
 841
 842         if (vnic_dev_capable(vdev, CMD_INTR_COAL_CONVERT))
 843                 err = _vnic_dev_cmd(vdev, CMD_INTR_COAL_CONVERT, wait);
 844         else
 845                 err = ERR_ECMDUNKNOWN;
 846
 847         /* Use defaults when firmware doesn't support the devcmd at all or
 848          * supports it for only specific hardware
 849          */
 850         if ((err == ERR_ECMDUNKNOWN) ||
 851                 (!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) {
 852                 pr_warning("Using default conversion factor for "
 853                         "interrupt coalesce timer\n");
 854                 vnic_dev_intr_coal_timer_info_default(vdev);
 855                 return 0;
 856         }
 857
 858         if (!err) {
 859                 vdev->intr_coal_timer_info.mul = (u32) vdev->args[0];
 860                 vdev->intr_coal_timer_info.div = (u32) vdev->args[1];
 861                 vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2];
 862         }
 863
 864         return err;
 865 }
 866
 867 int vnic_dev_link_status(struct vnic_dev *vdev)
 868 {
 869         if (!vnic_dev_notify_ready(vdev))
 870                 return 0;
 871
 872         return vdev->notify_copy.link_state;
 873 }
 874
 875 u32 vnic_dev_port_speed(struct vnic_dev *vdev)
 876 {
 877         if (!vnic_dev_notify_ready(vdev))
 878                 return 0;
 879
 880         return vdev->notify_copy.port_speed;
 881 }
 882
 883 u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
 884 {
 885         if (!vnic_dev_notify_ready(vdev))
 886                 return 0;
 887
 888         return vdev->notify_copy.msglvl;
 889 }
 890
 891 u32 vnic_dev_mtu(struct vnic_dev *vdev)
 892 {
 893         if (!vnic_dev_notify_ready(vdev))
 894                 return 0;
 895
 896         return vdev->notify_copy.mtu;
 897 }
 898
 899 void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
 900         enum vnic_dev_intr_mode intr_mode)
 901 {
 902         vdev->intr_mode = intr_mode;
 903 }
 904
 905 enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
 906         struct vnic_dev *vdev)
 907 {
 908         return vdev->intr_mode;
 909 }
 910
 911 u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
 912 {
 913         return (usec * vdev->intr_coal_timer_info.mul) /
 914                 vdev->intr_coal_timer_info.div;
 915 }
 916
 917 u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
 918 {
 919         return (hw_cycles * vdev->intr_coal_timer_info.div) /
 920                 vdev->intr_coal_timer_info.mul;
 921 }
 922
 923 u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
 924 {
 925         return vdev->intr_coal_timer_info.max_usec;
 926 }
 927
 928 void vnic_dev_unregister(struct vnic_dev *vdev)
 929 {
 930         if (vdev) {
 931                 if (vdev->notify)
 932                         pci_free_consistent(vdev->pdev,
 933                                 sizeof(struct vnic_devcmd_notify),
 934                                 vdev->notify,
 935                                 vdev->notify_pa);
 936                 if (vdev->stats)
 937                         pci_free_consistent(vdev->pdev,
 938                                 sizeof(struct vnic_stats),
 939                                 vdev->stats, vdev->stats_pa);
 940                 if (vdev->fw_info)
 941                         pci_free_consistent(vdev->pdev,
 942                                 sizeof(struct vnic_devcmd_fw_info),
 943                                 vdev->fw_info, vdev->fw_info_pa);
 944                 kfree(vdev);
 945         }
 946 }
 947 EXPORT_SYMBOL(vnic_dev_unregister);
 948
 949 struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
 950         void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
 951         unsigned int num_bars)
 952 {
 953         if (!vdev) {
 954                 vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
 955                 if (!vdev)
 956                         return NULL;
 957         }
 958
 959         vdev->priv = priv;
 960         vdev->pdev = pdev;
 961
 962         if (vnic_dev_discover_res(vdev, bar, num_bars))
 963                 goto err_out;
 964
 965         vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
 966         if (!vdev->devcmd)
 967                 goto err_out;
 968
 969         return vdev;
 970
 971 err_out:
 972         vnic_dev_unregister(vdev);
 973         return NULL;
 974 }
 975 EXPORT_SYMBOL(vnic_dev_register);
 976
 977 struct pci_dev *vnic_dev_get_pdev(struct vnic_dev *vdev)
 978 {
 979         return vdev->pdev;
 980 }
 981 EXPORT_SYMBOL(vnic_dev_get_pdev);
 982
 983 int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len)
 984 {
 985         u64 a0, a1 = len;
 986         int wait = 1000;
 987         dma_addr_t prov_pa;
 988         void *prov_buf;
 989         int ret;
 990
 991         prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa);
 992         if (!prov_buf)
 993                 return -ENOMEM;
 994
 995         memcpy(prov_buf, buf, len);
 996
 997         a0 = prov_pa;
 998
 999         ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO2, &a0, &a1, wait);
1000
1001         pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa);
1002
1003         return ret;
1004 }
1005
1006 int vnic_dev_enable2(struct vnic_dev *vdev, int active)
1007 {
1008         u64 a0, a1 = 0;
1009         int wait = 1000;
1010
1011         a0 = (active ? CMD_ENABLE2_ACTIVE : 0);
1012
1013         return vnic_dev_cmd(vdev, CMD_ENABLE2, &a0, &a1, wait);
1014 }
1015
1016 static int vnic_dev_cmd_status(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
1017         int *status)
1018 {
1019         u64 a0 = cmd, a1 = 0;
1020         int wait = 1000;
1021         int ret;
1022
1023         ret = vnic_dev_cmd(vdev, CMD_STATUS, &a0, &a1, wait);
1024         if (!ret)
1025                 *status = (int)a0;
1026
1027         return ret;
1028 }
1029
1030 int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status)
1031 {
1032         return vnic_dev_cmd_status(vdev, CMD_ENABLE2, status);
1033 }
1034
1035 int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status)
1036 {
1037         return vnic_dev_cmd_status(vdev, CMD_DEINIT, status);
1038 }
1039
1040 int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
1041 {
1042         u64 a0, a1;
1043         int wait = 1000;
1044         int i;
1045
1046         for (i = 0; i < ETH_ALEN; i++)
1047                 ((u8 *)&a0)[i] = mac_addr[i];
1048
1049         return vnic_dev_cmd(vdev, CMD_SET_MAC_ADDR, &a0, &a1, wait);
1050 }