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_zalloc_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                 a0 = vdev->fw_info_pa;
 442                 a1 = sizeof(struct vnic_devcmd_fw_info);
 443
 444                 /* only get fw_info once and cache it */
 445                 if (vnic_dev_capable(vdev, CMD_MCPU_FW_INFO))
 446                         err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO,
 447                                 &a0, &a1, wait);
 448                 else
 449                         err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO_OLD,
 450                                 &a0, &a1, wait);
 451         }
 452
 453         *fw_info = vdev->fw_info;
 454
 455         return err;
 456 }
 457
 458 int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
 459         void *value)
 460 {
 461         u64 a0, a1;
 462         int wait = 1000;
 463         int err;
 464
 465         a0 = offset;
 466         a1 = size;
 467
 468         err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
 469
 470         switch (size) {
 471         case 1: *(u8 *)value = (u8)a0; break;
 472         case 2: *(u16 *)value = (u16)a0; break;
 473         case 4: *(u32 *)value = (u32)a0; break;
 474         case 8: *(u64 *)value = a0; break;
 475         default: BUG(); break;
 476         }
 477
 478         return err;
 479 }
 480
 481 int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
 482 {
 483         u64 a0, a1;
 484         int wait = 1000;
 485
 486         if (!vdev->stats) {
 487                 vdev->stats = pci_alloc_consistent(vdev->pdev,
 488                         sizeof(struct vnic_stats), &vdev->stats_pa);
 489                 if (!vdev->stats)
 490                         return -ENOMEM;
 491         }
 492
 493         *stats = vdev->stats;
 494         a0 = vdev->stats_pa;
 495         a1 = sizeof(struct vnic_stats);
 496
 497         return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
 498 }
 499
 500 int vnic_dev_close(struct vnic_dev *vdev)
 501 {
 502         u64 a0 = 0, a1 = 0;
 503         int wait = 1000;
 504         return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
 505 }
 506
 507 int vnic_dev_enable_wait(struct vnic_dev *vdev)
 508 {
 509         u64 a0 = 0, a1 = 0;
 510         int wait = 1000;
 511
 512         if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
 513                 return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
 514         else
 515                 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
 516 }
 517
 518 int vnic_dev_disable(struct vnic_dev *vdev)
 519 {
 520         u64 a0 = 0, a1 = 0;
 521         int wait = 1000;
 522         return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
 523 }
 524
 525 int vnic_dev_open(struct vnic_dev *vdev, int arg)
 526 {
 527         u64 a0 = (u32)arg, a1 = 0;
 528         int wait = 1000;
 529         return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
 530 }
 531
 532 int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
 533 {
 534         u64 a0 = 0, a1 = 0;
 535         int wait = 1000;
 536         int err;
 537
 538         *done = 0;
 539
 540         err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
 541         if (err)
 542                 return err;
 543
 544         *done = (a0 == 0);
 545
 546         return 0;
 547 }
 548
 549 static int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
 550 {
 551         u64 a0 = (u32)arg, a1 = 0;
 552         int wait = 1000;
 553         return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
 554 }
 555
 556 static int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
 557 {
 558         u64 a0 = 0, a1 = 0;
 559         int wait = 1000;
 560         int err;
 561
 562         *done = 0;
 563
 564         err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
 565         if (err)
 566                 return err;
 567
 568         *done = (a0 == 0);
 569
 570         return 0;
 571 }
 572
 573 int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg)
 574 {
 575         u64 a0 = (u32)arg, a1 = 0;
 576         int wait = 1000;
 577         int err;
 578
 579         if (vnic_dev_capable(vdev, CMD_HANG_RESET)) {
 580                 return vnic_dev_cmd(vdev, CMD_HANG_RESET,
 581                                 &a0, &a1, wait);
 582         } else {
 583                 err = vnic_dev_soft_reset(vdev, arg);
 584                 if (err)
 585                         return err;
 586                 return vnic_dev_init(vdev, 0);
 587         }
 588 }
 589
 590 int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done)
 591 {
 592         u64 a0 = 0, a1 = 0;
 593         int wait = 1000;
 594         int err;
 595
 596         *done = 0;
 597
 598         if (vnic_dev_capable(vdev, CMD_HANG_RESET_STATUS)) {
 599                 err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS,
 600                                 &a0, &a1, wait);
 601                 if (err)
 602                         return err;
 603         } else {
 604                 return vnic_dev_soft_reset_done(vdev, done);
 605         }
 606
 607         *done = (a0 == 0);
 608
 609         return 0;
 610 }
 611
 612 int vnic_dev_hang_notify(struct vnic_dev *vdev)
 613 {
 614         u64 a0, a1;
 615         int wait = 1000;
 616         return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
 617 }
 618
 619 int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
 620 {
 621         u64 a0, a1;
 622         int wait = 1000;
 623         int err, i;
 624
 625         for (i = 0; i < ETH_ALEN; i++)
 626                 mac_addr[i] = 0;
 627
 628         err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 629         if (err)
 630                 return err;
 631
 632         for (i = 0; i < ETH_ALEN; i++)
 633                 mac_addr[i] = ((u8 *)&a0)[i];
 634
 635         return 0;
 636 }
 637
 638 int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
 639         int broadcast, int promisc, int allmulti)
 640 {
 641         u64 a0, a1 = 0;
 642         int wait = 1000;
 643         int err;
 644
 645         a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
 646              (multicast ? CMD_PFILTER_MULTICAST : 0) |
 647              (broadcast ? CMD_PFILTER_BROADCAST : 0) |
 648              (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
 649              (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
 650
 651         err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
 652         if (err)
 653                 pr_err("Can't set packet filter\n");
 654
 655         return err;
 656 }
 657
 658 int vnic_dev_add_addr(struct vnic_dev *vdev, const u8 *addr)
 659 {
 660         u64 a0 = 0, a1 = 0;
 661         int wait = 1000;
 662         int err;
 663         int i;
 664
 665         for (i = 0; i < ETH_ALEN; i++)
 666                 ((u8 *)&a0)[i] = addr[i];
 667
 668         err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 669         if (err)
 670                 pr_err("Can't add addr [%pM], %d\n", addr, err);
 671
 672         return err;
 673 }
 674
 675 int vnic_dev_del_addr(struct vnic_dev *vdev, const u8 *addr)
 676 {
 677         u64 a0 = 0, a1 = 0;
 678         int wait = 1000;
 679         int err;
 680         int i;
 681
 682         for (i = 0; i < ETH_ALEN; i++)
 683                 ((u8 *)&a0)[i] = addr[i];
 684
 685         err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
 686         if (err)
 687                 pr_err("Can't del addr [%pM], %d\n", addr, err);
 688
 689         return err;
 690 }
 691
 692 int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
 693         u8 ig_vlan_rewrite_mode)
 694 {
 695         u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
 696         int wait = 1000;
 697
 698         if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
 699                 return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
 700                                 &a0, &a1, wait);
 701         else
 702                 return 0;
 703 }
 704
 705 static int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
 706         void *notify_addr, dma_addr_t notify_pa, u16 intr)
 707 {
 708         u64 a0, a1;
 709         int wait = 1000;
 710         int r;
 711
 712         memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
 713         vdev->notify = notify_addr;
 714         vdev->notify_pa = notify_pa;
 715
 716         a0 = (u64)notify_pa;
 717         a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
 718         a1 += sizeof(struct vnic_devcmd_notify);
 719
 720         r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 721         vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
 722         return r;
 723 }
 724
 725 int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
 726 {
 727         void *notify_addr;
 728         dma_addr_t notify_pa;
 729
 730         if (vdev->notify || vdev->notify_pa) {
 731                 pr_err("notify block %p still allocated", vdev->notify);
 732                 return -EINVAL;
 733         }
 734
 735         notify_addr = pci_alloc_consistent(vdev->pdev,
 736                         sizeof(struct vnic_devcmd_notify),
 737                         &notify_pa);
 738         if (!notify_addr)
 739                 return -ENOMEM;
 740
 741         return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
 742 }
 743
 744 static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
 745 {
 746         u64 a0, a1;
 747         int wait = 1000;
 748         int err;
 749
 750         a0 = 0;  /* paddr = 0 to unset notify buffer */
 751         a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
 752         a1 += sizeof(struct vnic_devcmd_notify);
 753
 754         err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
 755         vdev->notify = NULL;
 756         vdev->notify_pa = 0;
 757         vdev->notify_sz = 0;
 758
 759         return err;
 760 }
 761
 762 int vnic_dev_notify_unset(struct vnic_dev *vdev)
 763 {
 764         if (vdev->notify) {
 765                 pci_free_consistent(vdev->pdev,
 766                         sizeof(struct vnic_devcmd_notify),
 767                         vdev->notify,
 768                         vdev->notify_pa);
 769         }
 770
 771         return vnic_dev_notify_unsetcmd(vdev);
 772 }
 773
 774 static int vnic_dev_notify_ready(struct vnic_dev *vdev)
 775 {
 776         u32 *words;
 777         unsigned int nwords = vdev->notify_sz / 4;
 778         unsigned int i;
 779         u32 csum;
 780
 781         if (!vdev->notify || !vdev->notify_sz)
 782                 return 0;
 783
 784         do {
 785                 csum = 0;
 786                 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
 787                 words = (u32 *)&vdev->notify_copy;
 788                 for (i = 1; i < nwords; i++)
 789                         csum += words[i];
 790         } while (csum != words[0]);
 791
 792         return 1;
 793 }
 794
 795 int vnic_dev_init(struct vnic_dev *vdev, int arg)
 796 {
 797         u64 a0 = (u32)arg, a1 = 0;
 798         int wait = 1000;
 799         int r = 0;
 800
 801         if (vnic_dev_capable(vdev, CMD_INIT))
 802                 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
 803         else {
 804                 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
 805                 if (a0 & CMD_INITF_DEFAULT_MAC) {
 806                         /* Emulate these for old CMD_INIT_v1 which
 807                          * didn't pass a0 so no CMD_INITF_*.
 808                          */
 809                         vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
 810                         vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
 811                 }
 812         }
 813         return r;
 814 }
 815
 816 int vnic_dev_deinit(struct vnic_dev *vdev)
 817 {
 818         u64 a0 = 0, a1 = 0;
 819         int wait = 1000;
 820
 821         return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
 822 }
 823
 824 void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
 825 {
 826         /* Default: hardware intr coal timer is in units of 1.5 usecs */
 827         vdev->intr_coal_timer_info.mul = 2;
 828         vdev->intr_coal_timer_info.div = 3;
 829         vdev->intr_coal_timer_info.max_usec =
 830                 vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
 831 }
 832
 833 int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev)
 834 {
 835         int wait = 1000;
 836         int err;
 837
 838         memset(vdev->args, 0, sizeof(vdev->args));
 839
 840         if (vnic_dev_capable(vdev, CMD_INTR_COAL_CONVERT))
 841                 err = _vnic_dev_cmd(vdev, CMD_INTR_COAL_CONVERT, wait);
 842         else
 843                 err = ERR_ECMDUNKNOWN;
 844
 845         /* Use defaults when firmware doesn't support the devcmd at all or
 846          * supports it for only specific hardware
 847          */
 848         if ((err == ERR_ECMDUNKNOWN) ||
 849                 (!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) {
 850                 pr_warn("Using default conversion factor for interrupt coalesce timer\n");
 851                 vnic_dev_intr_coal_timer_info_default(vdev);
 852                 return 0;
 853         }
 854
 855         if (!err) {
 856                 vdev->intr_coal_timer_info.mul = (u32) vdev->args[0];
 857                 vdev->intr_coal_timer_info.div = (u32) vdev->args[1];
 858                 vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2];
 859         }
 860
 861         return err;
 862 }
 863
 864 int vnic_dev_link_status(struct vnic_dev *vdev)
 865 {
 866         if (!vnic_dev_notify_ready(vdev))
 867                 return 0;
 868
 869         return vdev->notify_copy.link_state;
 870 }
 871
 872 u32 vnic_dev_port_speed(struct vnic_dev *vdev)
 873 {
 874         if (!vnic_dev_notify_ready(vdev))
 875                 return 0;
 876
 877         return vdev->notify_copy.port_speed;
 878 }
 879
 880 u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
 881 {
 882         if (!vnic_dev_notify_ready(vdev))
 883                 return 0;
 884
 885         return vdev->notify_copy.msglvl;
 886 }
 887
 888 u32 vnic_dev_mtu(struct vnic_dev *vdev)
 889 {
 890         if (!vnic_dev_notify_ready(vdev))
 891                 return 0;
 892
 893         return vdev->notify_copy.mtu;
 894 }
 895
 896 void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
 897         enum vnic_dev_intr_mode intr_mode)
 898 {
 899         vdev->intr_mode = intr_mode;
 900 }
 901
 902 enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
 903         struct vnic_dev *vdev)
 904 {
 905         return vdev->intr_mode;
 906 }
 907
 908 u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
 909 {
 910         return (usec * vdev->intr_coal_timer_info.mul) /
 911                 vdev->intr_coal_timer_info.div;
 912 }
 913
 914 u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
 915 {
 916         return (hw_cycles * vdev->intr_coal_timer_info.div) /
 917                 vdev->intr_coal_timer_info.mul;
 918 }
 919
 920 u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
 921 {
 922         return vdev->intr_coal_timer_info.max_usec;
 923 }
 924
 925 void vnic_dev_unregister(struct vnic_dev *vdev)
 926 {
 927         if (vdev) {
 928                 if (vdev->notify)
 929                         pci_free_consistent(vdev->pdev,
 930                                 sizeof(struct vnic_devcmd_notify),
 931                                 vdev->notify,
 932                                 vdev->notify_pa);
 933                 if (vdev->stats)
 934                         pci_free_consistent(vdev->pdev,
 935                                 sizeof(struct vnic_stats),
 936                                 vdev->stats, vdev->stats_pa);
 937                 if (vdev->fw_info)
 938                         pci_free_consistent(vdev->pdev,
 939                                 sizeof(struct vnic_devcmd_fw_info),
 940                                 vdev->fw_info, vdev->fw_info_pa);
 941                 kfree(vdev);
 942         }
 943 }
 944 EXPORT_SYMBOL(vnic_dev_unregister);
 945
 946 struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
 947         void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
 948         unsigned int num_bars)
 949 {
 950         if (!vdev) {
 951                 vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
 952                 if (!vdev)
 953                         return NULL;
 954         }
 955
 956         vdev->priv = priv;
 957         vdev->pdev = pdev;
 958
 959         if (vnic_dev_discover_res(vdev, bar, num_bars))
 960                 goto err_out;
 961
 962         vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
 963         if (!vdev->devcmd)
 964                 goto err_out;
 965
 966         return vdev;
 967
 968 err_out:
 969         vnic_dev_unregister(vdev);
 970         return NULL;
 971 }
 972 EXPORT_SYMBOL(vnic_dev_register);
 973
 974 struct pci_dev *vnic_dev_get_pdev(struct vnic_dev *vdev)
 975 {
 976         return vdev->pdev;
 977 }
 978 EXPORT_SYMBOL(vnic_dev_get_pdev);
 979
 980 int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len)
 981 {
 982         u64 a0, a1 = len;
 983         int wait = 1000;
 984         dma_addr_t prov_pa;
 985         void *prov_buf;
 986         int ret;
 987
 988         prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa);
 989         if (!prov_buf)
 990                 return -ENOMEM;
 991
 992         memcpy(prov_buf, buf, len);
 993
 994         a0 = prov_pa;
 995
 996         ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO2, &a0, &a1, wait);
 997
 998         pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa);
 999
1000         return ret;
1001 }
1002
1003 int vnic_dev_enable2(struct vnic_dev *vdev, int active)
1004 {
1005         u64 a0, a1 = 0;
1006         int wait = 1000;
1007
1008         a0 = (active ? CMD_ENABLE2_ACTIVE : 0);
1009
1010         return vnic_dev_cmd(vdev, CMD_ENABLE2, &a0, &a1, wait);
1011 }
1012
1013 static int vnic_dev_cmd_status(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
1014         int *status)
1015 {
1016         u64 a0 = cmd, a1 = 0;
1017         int wait = 1000;
1018         int ret;
1019
1020         ret = vnic_dev_cmd(vdev, CMD_STATUS, &a0, &a1, wait);
1021         if (!ret)
1022                 *status = (int)a0;
1023
1024         return ret;
1025 }
1026
1027 int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status)
1028 {
1029         return vnic_dev_cmd_status(vdev, CMD_ENABLE2, status);
1030 }
1031
1032 int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status)
1033 {
1034         return vnic_dev_cmd_status(vdev, CMD_DEINIT, status);
1035 }
1036
1037 int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
1038 {
1039         u64 a0, a1;
1040         int wait = 1000;
1041         int i;
1042
1043         for (i = 0; i < ETH_ALEN; i++)
1044                 ((u8 *)&a0)[i] = mac_addr[i];
1045
1046         return vnic_dev_cmd(vdev, CMD_SET_MAC_ADDR, &a0, &a1, wait);
1047 }
1048
1049 /* vnic_dev_classifier: Add/Delete classifier entries
1050  * @vdev: vdev of the device
1051  * @cmd: CLSF_ADD for Add filter
1052  *       CLSF_DEL for Delete filter
1053  * @entry: In case of ADD filter, the caller passes the RQ number in this
1054  *         variable.
1055  *
1056  *         This function stores the filter_id returned by the firmware in the
1057  *         same variable before return;
1058  *
1059  *         In case of DEL filter, the caller passes the RQ number. Return
1060  *         value is irrelevant.
1061  * @data: filter data
1062  */
1063 int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,
1064                         struct filter *data)
1065 {
1066         u64 a0, a1;
1067         int wait = 1000;
1068         dma_addr_t tlv_pa;
1069         int ret = -EINVAL;
1070         struct filter_tlv *tlv, *tlv_va;
1071         struct filter_action *action;
1072         u64 tlv_size;
1073
1074         if (cmd == CLSF_ADD) {
1075                 tlv_size = sizeof(struct filter) +
1076                            sizeof(struct filter_action) +
1077                            2 * sizeof(struct filter_tlv);
1078                 tlv_va = pci_alloc_consistent(vdev->pdev, tlv_size, &tlv_pa);
1079                 if (!tlv_va)
1080                         return -ENOMEM;
1081                 tlv = tlv_va;
1082                 a0 = tlv_pa;
1083                 a1 = tlv_size;
1084                 memset(tlv, 0, tlv_size);
1085                 tlv->type = CLSF_TLV_FILTER;
1086                 tlv->length = sizeof(struct filter);
1087                 *(struct filter *)&tlv->val = *data;
1088
1089                 tlv = (struct filter_tlv *)((char *)tlv +
1090                                             sizeof(struct filter_tlv) +
1091                                             sizeof(struct filter));
1092
1093                 tlv->type = CLSF_TLV_ACTION;
1094                 tlv->length = sizeof(struct filter_action);
1095                 action = (struct filter_action *)&tlv->val;
1096                 action->type = FILTER_ACTION_RQ_STEERING;
1097                 action->u.rq_idx = *entry;
1098
1099                 ret = vnic_dev_cmd(vdev, CMD_ADD_FILTER, &a0, &a1, wait);
1100                 *entry = (u16)a0;
1101                 pci_free_consistent(vdev->pdev, tlv_size, tlv_va, tlv_pa);
1102         } else if (cmd == CLSF_DEL) {
1103                 a0 = *entry;
1104                 ret = vnic_dev_cmd(vdev, CMD_DEL_FILTER, &a0, &a1, wait);
1105         }
1106
1107         return ret;
1108 }