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 32enum vnic_proxy_type { 33 PROXY_NONE, 34 PROXY_BY_BDF, 35}; 36 37struct vnic_res { 38 void __iomem *vaddr; 39 dma_addr_t bus_addr; 40 unsigned int count; 41}; 42 43struct vnic_dev { 44 void *priv; 45 struct pci_dev *pdev; 46 struct vnic_res res[RES_TYPE_MAX]; 47 enum vnic_dev_intr_mode intr_mode; 48 struct vnic_devcmd __iomem *devcmd; 49 struct vnic_devcmd_notify *notify; 50 struct vnic_devcmd_notify notify_copy; 51 dma_addr_t notify_pa; 52 u32 notify_sz; 53 dma_addr_t linkstatus_pa; 54 struct vnic_stats *stats; 55 dma_addr_t stats_pa; 56 struct vnic_devcmd_fw_info *fw_info; 57 dma_addr_t fw_info_pa; 58 enum vnic_proxy_type proxy; 59 u32 proxy_index; 60 u64 args[VNIC_DEVCMD_NARGS]; 61}; 62 63#define VNIC_MAX_RES_HDR_SIZE \ 64 (sizeof(struct vnic_resource_header) + \ 65 sizeof(struct vnic_resource) * RES_TYPE_MAX) 66#define VNIC_RES_STRIDE 128 67 68void *vnic_dev_priv(struct vnic_dev *vdev) 69{ 70 return vdev->priv; 71} 72 73static int vnic_dev_discover_res(struct vnic_dev *vdev, 74 struct vnic_dev_bar *bar, unsigned int num_bars) 75{ 76 struct vnic_resource_header __iomem *rh; 77 struct vnic_resource __iomem *r; 78 u8 type; 79 80 if (num_bars == 0) 81 return -EINVAL; 82 83 if (bar->len < VNIC_MAX_RES_HDR_SIZE) { 84 pr_err("vNIC BAR0 res hdr length error\n"); 85 return -EINVAL; 86 } 87 88 rh = bar->vaddr; 89 if (!rh) { 90 pr_err("vNIC BAR0 res hdr not mem-mapped\n"); 91 return -EINVAL; 92 } 93 94 if (ioread32(&rh->magic) != VNIC_RES_MAGIC || 95 ioread32(&rh->version) != VNIC_RES_VERSION) { 96 pr_err("vNIC BAR0 res magic/version error " 97 "exp (%lx/%lx) curr (%x/%x)\n", 98 VNIC_RES_MAGIC, VNIC_RES_VERSION, 99 ioread32(&rh->magic), ioread32(&rh->version)); 100 return -EINVAL; 101 } 102 103 r = (struct vnic_resource __iomem *)(rh + 1); 104 105 while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { 106 107 u8 bar_num = ioread8(&r->bar); 108 u32 bar_offset = ioread32(&r->bar_offset); 109 u32 count = ioread32(&r->count); 110 u32 len; 111 112 r++; 113 114 if (bar_num >= num_bars) 115 continue; 116 117 if (!bar[bar_num].len || !bar[bar_num].vaddr) 118 continue; 119 120 switch (type) { 121 case RES_TYPE_WQ: 122 case RES_TYPE_RQ: 123 case RES_TYPE_CQ: 124 case RES_TYPE_INTR_CTRL: 125 /* each count is stride bytes long */ 126 len = count * VNIC_RES_STRIDE; 127 if (len + bar_offset > bar[bar_num].len) { 128 pr_err("vNIC BAR0 resource %d " 129 "out-of-bounds, offset 0x%x + " 130 "size 0x%x > bar len 0x%lx\n", 131 type, bar_offset, 132 len, 133 bar[bar_num].len); 134 return -EINVAL; 135 } 136 break; 137 case RES_TYPE_INTR_PBA_LEGACY: 138 case RES_TYPE_DEVCMD: 139 len = count; 140 break; 141 default: 142 continue; 143 } 144 145 vdev->res[type].count = count; 146 vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr + 147 bar_offset; 148 vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset; 149 } 150 151 return 0; 152} 153 154unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, 155 enum vnic_res_type type) 156{ 157 return vdev->res[type].count; 158} 159 160void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, 161 unsigned int index) 162{ 163 if (!vdev->res[type].vaddr) 164 return NULL; 165 166 switch (type) { 167 case RES_TYPE_WQ: 168 case RES_TYPE_RQ: 169 case RES_TYPE_CQ: 170 case RES_TYPE_INTR_CTRL: 171 return (char __iomem *)vdev->res[type].vaddr + 172 index * VNIC_RES_STRIDE; 173 default: 174 return (char __iomem *)vdev->res[type].vaddr; 175 } 176} 177 178dma_addr_t vnic_dev_get_res_bus_addr(struct vnic_dev *vdev, 179 enum vnic_res_type type, unsigned int index) 180{ 181 switch (type) { 182 case RES_TYPE_WQ: 183 case RES_TYPE_RQ: 184 case RES_TYPE_CQ: 185 case RES_TYPE_INTR_CTRL: 186 return vdev->res[type].bus_addr + 187 index * VNIC_RES_STRIDE; 188 default: 189 return vdev->res[type].bus_addr; 190 } 191} 192 193unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, 194 unsigned int desc_count, unsigned int desc_size) 195{ 196 /* The base address of the desc rings must be 512 byte aligned. 197 * Descriptor count is aligned to groups of 32 descriptors. A 198 * count of 0 means the maximum 4096 descriptors. Descriptor 199 * size is aligned to 16 bytes. 200 */ 201 202 unsigned int count_align = 32; 203 unsigned int desc_align = 16; 204 205 ring->base_align = 512; 206 207 if (desc_count == 0) 208 desc_count = 4096; 209 210 ring->desc_count = ALIGN(desc_count, count_align); 211 212 ring->desc_size = ALIGN(desc_size, desc_align); 213 214 ring->size = ring->desc_count * ring->desc_size; 215 ring->size_unaligned = ring->size + ring->base_align; 216 217 return ring->size_unaligned; 218} 219 220void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) 221{ 222 memset(ring->descs, 0, ring->size); 223} 224 225int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, 226 unsigned int desc_count, unsigned int desc_size) 227{ 228 vnic_dev_desc_ring_size(ring, desc_count, desc_size); 229 230 ring->descs_unaligned = pci_alloc_consistent(vdev->pdev, 231 ring->size_unaligned, 232 &ring->base_addr_unaligned); 233 234 if (!ring->descs_unaligned) { 235 pr_err("Failed to allocate ring (size=%d), aborting\n", 236 (int)ring->size); 237 return -ENOMEM; 238 } 239 240 ring->base_addr = ALIGN(ring->base_addr_unaligned, 241 ring->base_align); 242 ring->descs = (u8 *)ring->descs_unaligned + 243 (ring->base_addr - ring->base_addr_unaligned); 244 245 vnic_dev_clear_desc_ring(ring); 246 247 ring->desc_avail = ring->desc_count - 1; 248 249 return 0; 250} 251 252void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) 253{ 254 if (ring->descs) { 255 pci_free_consistent(vdev->pdev, 256 ring->size_unaligned, 257 ring->descs_unaligned, 258 ring->base_addr_unaligned); 259 ring->descs = NULL; 260 } 261} 262 263static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 264 int wait) 265{ 266 struct vnic_devcmd __iomem *devcmd = vdev->devcmd; 267 unsigned int i; 268 int delay; 269 u32 status; 270 int err; 271 272 status = ioread32(&devcmd->status); 273 if (status == 0xFFFFFFFF) { 274 /* PCI-e target device is gone */ 275 return -ENODEV; 276 } 277 if (status & STAT_BUSY) { 278 pr_err("Busy devcmd %d\n", _CMD_N(cmd)); 279 return -EBUSY; 280 } 281 282 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { 283 for (i = 0; i < VNIC_DEVCMD_NARGS; i++) 284 writeq(vdev->args[i], &devcmd->args[i]); 285 wmb(); 286 } 287 288 iowrite32(cmd, &devcmd->cmd); 289 290 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) 291 return 0; 292 293 for (delay = 0; delay < wait; delay++) { 294 295 udelay(100); 296 297 status = ioread32(&devcmd->status); 298 if (status == 0xFFFFFFFF) { 299 /* PCI-e target device is gone */ 300 return -ENODEV; 301 } 302 303 if (!(status & STAT_BUSY)) { 304 305 if (status & STAT_ERROR) { 306 err = (int)readq(&devcmd->args[0]); 307 if (err != ERR_ECMDUNKNOWN || 308 cmd != CMD_CAPABILITY) 309 pr_err("Error %d devcmd %d\n", 310 err, _CMD_N(cmd)); 311 return err; 312 } 313 314 if (_CMD_DIR(cmd) & _CMD_DIR_READ) { 315 rmb(); 316 for (i = 0; i < VNIC_DEVCMD_NARGS; i++) 317 vdev->args[i] = readq(&devcmd->args[i]); 318 } 319 320 return 0; 321 } 322 } 323 324 pr_err("Timedout devcmd %d\n", _CMD_N(cmd)); 325 return -ETIMEDOUT; 326} 327 328static int vnic_dev_cmd_proxy_by_bdf(struct vnic_dev *vdev, 329 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) 330{ 331 u32 status; 332 int err; 333 334 memset(vdev->args, 0, sizeof(vdev->args)); 335 336 vdev->args[0] = vdev->proxy_index; /* bdf */ 337 vdev->args[1] = cmd; 338 vdev->args[2] = *a0; 339 vdev->args[3] = *a1; 340 341 err = _vnic_dev_cmd(vdev, CMD_PROXY_BY_BDF, wait); 342 if (err) 343 return err; 344 345 status = (u32)vdev->args[0]; 346 if (status & STAT_ERROR) { 347 err = (int)vdev->args[1]; 348 if (err != ERR_ECMDUNKNOWN || 349 cmd != CMD_CAPABILITY) 350 pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd)); 351 return err; 352 } 353 354 *a0 = vdev->args[1]; 355 *a1 = vdev->args[2]; 356 357 return 0; 358} 359 360static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev, 361 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) 362{ 363 int err; 364 365 vdev->args[0] = *a0; 366 vdev->args[1] = *a1; 367 368 err = _vnic_dev_cmd(vdev, cmd, wait); 369 370 *a0 = vdev->args[0]; 371 *a1 = vdev->args[1]; 372 373 return err; 374} 375 376void vnic_dev_cmd_proxy_by_bdf_start(struct vnic_dev *vdev, u16 bdf) 377{ 378 vdev->proxy = PROXY_BY_BDF; 379 vdev->proxy_index = bdf; 380} 381 382void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev) 383{ 384 vdev->proxy = PROXY_NONE; 385 vdev->proxy_index = 0; 386} 387 388int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 389 u64 *a0, u64 *a1, int wait) 390{ 391 memset(vdev->args, 0, sizeof(vdev->args)); 392 393 switch (vdev->proxy) { 394 case PROXY_BY_BDF: 395 return vnic_dev_cmd_proxy_by_bdf(vdev, cmd, a0, a1, wait); 396 case PROXY_NONE: 397 default: 398 return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait); 399 } 400} 401 402static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd) 403{ 404 u64 a0 = (u32)cmd, a1 = 0; 405 int wait = 1000; 406 int err; 407 408 err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait); 409 410 return !(err || a0); 411} 412 413int vnic_dev_fw_info(struct vnic_dev *vdev, 414 struct vnic_devcmd_fw_info **fw_info) 415{ 416 u64 a0, a1 = 0; 417 int wait = 1000; 418 int err = 0; 419 420 if (!vdev->fw_info) { 421 vdev->fw_info = pci_alloc_consistent(vdev->pdev, 422 sizeof(struct vnic_devcmd_fw_info), 423 &vdev->fw_info_pa); 424 if (!vdev->fw_info) 425 return -ENOMEM; 426 427 a0 = vdev->fw_info_pa; 428 429 /* only get fw_info once and cache it */ 430 err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); 431 } 432 433 *fw_info = vdev->fw_info; 434 435 return err; 436} 437 438int vnic_dev_hw_version(struct vnic_dev *vdev, enum vnic_dev_hw_version *hw_ver) 439{ 440 struct vnic_devcmd_fw_info *fw_info; 441 int err; 442 443 err = vnic_dev_fw_info(vdev, &fw_info); 444 if (err) 445 return err; 446 447 if (strncmp(fw_info->hw_version, "A1", sizeof("A1")) == 0) 448 *hw_ver = VNIC_DEV_HW_VER_A1; 449 else if (strncmp(fw_info->hw_version, "A2", sizeof("A2")) == 0) 450 *hw_ver = VNIC_DEV_HW_VER_A2; 451 else 452 *hw_ver = VNIC_DEV_HW_VER_UNKNOWN; 453 454 return 0; 455} 456 457int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, 458 void *value) 459{ 460 u64 a0, a1; 461 int wait = 1000; 462 int err; 463 464 a0 = offset; 465 a1 = size; 466 467 err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); 468 469 switch (size) { 470 case 1: *(u8 *)value = (u8)a0; break; 471 case 2: *(u16 *)value = (u16)a0; break; 472 case 4: *(u32 *)value = (u32)a0; break; 473 case 8: *(u64 *)value = a0; break; 474 default: BUG(); break; 475 } 476 477 return err; 478} 479 480int vnic_dev_stats_clear(struct vnic_dev *vdev) 481{ 482 u64 a0 = 0, a1 = 0; 483 int wait = 1000; 484 return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait); 485} 486 487int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) 488{ 489 u64 a0, a1; 490 int wait = 1000; 491 492 if (!vdev->stats) { 493 vdev->stats = pci_alloc_consistent(vdev->pdev, 494 sizeof(struct vnic_stats), &vdev->stats_pa); 495 if (!vdev->stats) 496 return -ENOMEM; 497 } 498 499 *stats = vdev->stats; 500 a0 = vdev->stats_pa; 501 a1 = sizeof(struct vnic_stats); 502 503 return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); 504} 505 506int vnic_dev_close(struct vnic_dev *vdev) 507{ 508 u64 a0 = 0, a1 = 0; 509 int wait = 1000; 510 return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); 511} 512 513int vnic_dev_enable(struct vnic_dev *vdev) 514{ 515 u64 a0 = 0, a1 = 0; 516 int wait = 1000; 517 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); 518} 519 520int vnic_dev_enable_wait(struct vnic_dev *vdev) 521{ 522 u64 a0 = 0, a1 = 0; 523 int wait = 1000; 524 int err; 525 526 err = vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait); 527 if (err == ERR_ECMDUNKNOWN) 528 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); 529 530 return err; 531} 532 533int vnic_dev_disable(struct vnic_dev *vdev) 534{ 535 u64 a0 = 0, a1 = 0; 536 int wait = 1000; 537 return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); 538} 539 540int vnic_dev_open(struct vnic_dev *vdev, int arg) 541{ 542 u64 a0 = (u32)arg, a1 = 0; 543 int wait = 1000; 544 return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); 545} 546 547int vnic_dev_open_done(struct vnic_dev *vdev, int *done) 548{ 549 u64 a0 = 0, a1 = 0; 550 int wait = 1000; 551 int err; 552 553 *done = 0; 554 555 err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); 556 if (err) 557 return err; 558 559 *done = (a0 == 0); 560 561 return 0; 562} 563 564int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) 565{ 566 u64 a0 = (u32)arg, a1 = 0; 567 int wait = 1000; 568 return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); 569} 570 571int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) 572{ 573 u64 a0 = 0, a1 = 0; 574 int wait = 1000; 575 int err; 576 577 *done = 0; 578 579 err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); 580 if (err) 581 return err; 582 583 *done = (a0 == 0); 584 585 return 0; 586} 587 588int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg) 589{ 590 u64 a0 = (u32)arg, a1 = 0; 591 int wait = 1000; 592 int err; 593 594 err = vnic_dev_cmd(vdev, CMD_HANG_RESET, &a0, &a1, wait); 595 if (err == ERR_ECMDUNKNOWN) { 596 err = vnic_dev_soft_reset(vdev, arg); 597 if (err) 598 return err; 599 600 return vnic_dev_init(vdev, 0); 601 } 602 603 return err; 604} 605 606int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done) 607{ 608 u64 a0 = 0, a1 = 0; 609 int wait = 1000; 610 int err; 611 612 *done = 0; 613 614 err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS, &a0, &a1, wait); 615 if (err) { 616 if (err == ERR_ECMDUNKNOWN) 617 return vnic_dev_soft_reset_done(vdev, done); 618 return err; 619 } 620 621 *done = (a0 == 0); 622 623 return 0; 624} 625 626int vnic_dev_hang_notify(struct vnic_dev *vdev) 627{ 628 u64 a0, a1; 629 int wait = 1000; 630 return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); 631} 632 633int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) 634{ 635 u64 a0, a1; 636 int wait = 1000; 637 int err, i; 638 639 for (i = 0; i < ETH_ALEN; i++) 640 mac_addr[i] = 0; 641 642 err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); 643 if (err) 644 return err; 645 646 for (i = 0; i < ETH_ALEN; i++) 647 mac_addr[i] = ((u8 *)&a0)[i]; 648 649 return 0; 650} 651 652int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, 653 int broadcast, int promisc, int allmulti) 654{ 655 u64 a0, a1 = 0; 656 int wait = 1000; 657 int err; 658 659 a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | 660 (multicast ? CMD_PFILTER_MULTICAST : 0) | 661 (broadcast ? CMD_PFILTER_BROADCAST : 0) | 662 (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | 663 (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); 664 665 err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); 666 if (err) 667 pr_err("Can't set packet filter\n"); 668 669 return err; 670} 671 672int vnic_dev_packet_filter_all(struct vnic_dev *vdev, int directed, 673 int multicast, int broadcast, int promisc, int allmulti) 674{ 675 u64 a0, a1 = 0; 676 int wait = 1000; 677 int err; 678 679 a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | 680 (multicast ? CMD_PFILTER_MULTICAST : 0) | 681 (broadcast ? CMD_PFILTER_BROADCAST : 0) | 682 (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | 683 (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); 684 685 err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER_ALL, &a0, &a1, wait); 686 if (err) 687 pr_err("Can't set packet filter\n"); 688 689 return err; 690} 691 692int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) 693{ 694 u64 a0 = 0, a1 = 0; 695 int wait = 1000; 696 int err; 697 int i; 698 699 for (i = 0; i < ETH_ALEN; i++) 700 ((u8 *)&a0)[i] = addr[i]; 701 702 err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); 703 if (err) 704 pr_err("Can't add addr [%pM], %d\n", addr, err); 705 706 return err; 707} 708 709int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) 710{ 711 u64 a0 = 0, a1 = 0; 712 int wait = 1000; 713 int err; 714 int i; 715 716 for (i = 0; i < ETH_ALEN; i++) 717 ((u8 *)&a0)[i] = addr[i]; 718 719 err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait); 720 if (err) 721 pr_err("Can't del addr [%pM], %d\n", addr, err); 722 723 return err; 724} 725 726int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev, 727 u8 ig_vlan_rewrite_mode) 728{ 729 u64 a0 = ig_vlan_rewrite_mode, a1 = 0; 730 int wait = 1000; 731 int err; 732 733 err = vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE, &a0, &a1, wait); 734 if (err == ERR_ECMDUNKNOWN) 735 return 0; 736 737 return err; 738} 739 740int vnic_dev_raise_intr(struct vnic_dev *vdev, u16 intr) 741{ 742 u64 a0 = intr, a1 = 0; 743 int wait = 1000; 744 int err; 745 746 err = vnic_dev_cmd(vdev, CMD_IAR, &a0, &a1, wait); 747 if (err) 748 pr_err("Failed to raise INTR[%d], err %d\n", intr, err); 749 750 return err; 751} 752 753int vnic_dev_notify_setcmd(struct vnic_dev *vdev, 754 void *notify_addr, dma_addr_t notify_pa, u16 intr) 755{ 756 u64 a0, a1; 757 int wait = 1000; 758 int r; 759 760 memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify)); 761 vdev->notify = notify_addr; 762 vdev->notify_pa = notify_pa; 763 764 a0 = (u64)notify_pa; 765 a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; 766 a1 += sizeof(struct vnic_devcmd_notify); 767 768 r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); 769 vdev->notify_sz = (r == 0) ? (u32)a1 : 0; 770 return r; 771} 772 773int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) 774{ 775 void *notify_addr; 776 dma_addr_t notify_pa; 777 778 if (vdev->notify || vdev->notify_pa) { 779 pr_err("notify block %p still allocated", vdev->notify); 780 return -EINVAL; 781 } 782 783 notify_addr = pci_alloc_consistent(vdev->pdev, 784 sizeof(struct vnic_devcmd_notify), 785 ¬ify_pa); 786 if (!notify_addr) 787 return -ENOMEM; 788 789 return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr); 790} 791 792int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev) 793{ 794 u64 a0, a1; 795 int wait = 1000; 796 int err; 797 798 a0 = 0; /* paddr = 0 to unset notify buffer */ 799 a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ 800 a1 += sizeof(struct vnic_devcmd_notify); 801 802 err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); 803 vdev->notify = NULL; 804 vdev->notify_pa = 0; 805 vdev->notify_sz = 0; 806 807 return err; 808} 809 810int vnic_dev_notify_unset(struct vnic_dev *vdev) 811{ 812 if (vdev->notify) { 813 pci_free_consistent(vdev->pdev, 814 sizeof(struct vnic_devcmd_notify), 815 vdev->notify, 816 vdev->notify_pa); 817 } 818 819 return vnic_dev_notify_unsetcmd(vdev); 820} 821 822static int vnic_dev_notify_ready(struct vnic_dev *vdev) 823{ 824 u32 *words; 825 unsigned int nwords = vdev->notify_sz / 4; 826 unsigned int i; 827 u32 csum; 828 829 if (!vdev->notify || !vdev->notify_sz) 830 return 0; 831 832 do { 833 csum = 0; 834 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz); 835 words = (u32 *)&vdev->notify_copy; 836 for (i = 1; i < nwords; i++) 837 csum += words[i]; 838 } while (csum != words[0]); 839 840 return 1; 841} 842 843int vnic_dev_init(struct vnic_dev *vdev, int arg) 844{ 845 u64 a0 = (u32)arg, a1 = 0; 846 int wait = 1000; 847 int r = 0; 848 849 if (vnic_dev_capable(vdev, CMD_INIT)) 850 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); 851 else { 852 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait); 853 if (a0 & CMD_INITF_DEFAULT_MAC) { 854 /* Emulate these for old CMD_INIT_v1 which 855 * didn't pass a0 so no CMD_INITF_*. 856 */ 857 vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); 858 vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); 859 } 860 } 861 return r; 862} 863 864int vnic_dev_init_done(struct vnic_dev *vdev, int *done, int *err) 865{ 866 u64 a0 = 0, a1 = 0; 867 int wait = 1000; 868 int ret; 869 870 *done = 0; 871 872 ret = vnic_dev_cmd(vdev, CMD_INIT_STATUS, &a0, &a1, wait); 873 if (ret) 874 return ret; 875 876 *done = (a0 == 0); 877 878 *err = (a0 == 0) ? (int)a1:0; 879 880 return 0; 881} 882 883int vnic_dev_init_prov(struct vnic_dev *vdev, u8 *buf, u32 len) 884{ 885 u64 a0, a1 = len; 886 int wait = 1000; 887 dma_addr_t prov_pa; 888 void *prov_buf; 889 int ret; 890 891 prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa); 892 if (!prov_buf) 893 return -ENOMEM; 894 895 memcpy(prov_buf, buf, len); 896 897 a0 = prov_pa; 898 899 ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO, &a0, &a1, wait); 900 901 pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa); 902 903 return ret; 904} 905 906int vnic_dev_deinit(struct vnic_dev *vdev) 907{ 908 u64 a0 = 0, a1 = 0; 909 int wait = 1000; 910 911 return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait); 912} 913 914int vnic_dev_link_status(struct vnic_dev *vdev) 915{ 916 if (!vnic_dev_notify_ready(vdev)) 917 return 0; 918 919 return vdev->notify_copy.link_state; 920} 921 922u32 vnic_dev_port_speed(struct vnic_dev *vdev) 923{ 924 if (!vnic_dev_notify_ready(vdev)) 925 return 0; 926 927 return vdev->notify_copy.port_speed; 928} 929 930u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) 931{ 932 if (!vnic_dev_notify_ready(vdev)) 933 return 0; 934 935 return vdev->notify_copy.msglvl; 936} 937 938u32 vnic_dev_mtu(struct vnic_dev *vdev) 939{ 940 if (!vnic_dev_notify_ready(vdev)) 941 return 0; 942 943 return vdev->notify_copy.mtu; 944} 945 946u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev) 947{ 948 if (!vnic_dev_notify_ready(vdev)) 949 return 0; 950 951 return vdev->notify_copy.link_down_cnt; 952} 953 954u32 vnic_dev_notify_status(struct vnic_dev *vdev) 955{ 956 if (!vnic_dev_notify_ready(vdev)) 957 return 0; 958 959 return vdev->notify_copy.status; 960} 961 962u32 vnic_dev_uif(struct vnic_dev *vdev) 963{ 964 if (!vnic_dev_notify_ready(vdev)) 965 return 0; 966 967 return vdev->notify_copy.uif; 968} 969 970void vnic_dev_set_intr_mode(struct vnic_dev *vdev, 971 enum vnic_dev_intr_mode intr_mode) 972{ 973 vdev->intr_mode = intr_mode; 974} 975 976enum vnic_dev_intr_mode vnic_dev_get_intr_mode( 977 struct vnic_dev *vdev) 978{ 979 return vdev->intr_mode; 980} 981 982void vnic_dev_unregister(struct vnic_dev *vdev) 983{ 984 if (vdev) { 985 if (vdev->notify) 986 pci_free_consistent(vdev->pdev, 987 sizeof(struct vnic_devcmd_notify), 988 vdev->notify, 989 vdev->notify_pa); 990 if (vdev->stats) 991 pci_free_consistent(vdev->pdev, 992 sizeof(struct vnic_stats), 993 vdev->stats, vdev->stats_pa); 994 if (vdev->fw_info) 995 pci_free_consistent(vdev->pdev, 996 sizeof(struct vnic_devcmd_fw_info), 997 vdev->fw_info, vdev->fw_info_pa); 998 kfree(vdev); 999 } 1000} 1001 1002struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, 1003 void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar, 1004 unsigned int num_bars) 1005{ 1006 if (!vdev) { 1007 vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC); 1008 if (!vdev) 1009 return NULL; 1010 } 1011 1012 vdev->priv = priv; 1013 vdev->pdev = pdev; 1014 1015 if (vnic_dev_discover_res(vdev, bar, num_bars)) 1016 goto err_out; 1017 1018 vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); 1019 if (!vdev->devcmd) 1020 goto err_out; 1021 1022 return vdev; 1023 1024err_out: 1025 vnic_dev_unregister(vdev); 1026 return NULL; 1027} 1028