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 PROXY_BY_INDEX, 36}; 37 38struct vnic_res { 39 void __iomem *vaddr; 40 dma_addr_t bus_addr; 41 unsigned int count; 42}; 43 44struct vnic_intr_coal_timer_info { 45 u32 mul; 46 u32 div; 47 u32 max_usec; 48}; 49 50struct 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 76void *vnic_dev_priv(struct vnic_dev *vdev) 77{ 78 return vdev->priv; 79} 80 81static 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 173unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, 174 enum vnic_res_type type) 175{ 176 return vdev->res[type].count; 177} 178EXPORT_SYMBOL(vnic_dev_get_res_count); 179 180void __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} 197EXPORT_SYMBOL(vnic_dev_get_res); 198 199static 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 226void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) 227{ 228 memset(ring->descs, 0, ring->size); 229} 230 231int 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 258void 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 269static 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 337static 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 370static 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 386void 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 392void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev) 393{ 394 vdev->proxy = PROXY_NONE; 395 vdev->proxy_index = 0; 396} 397 398int 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 416static 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 427int 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 458int 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 481int 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 500int 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 507int 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 518int 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 525int 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 532int 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 549static 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 556static 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 573int 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 590int 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 612int 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 619int 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 638int 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 658int 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 675int 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 692int 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 705static 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 725int 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 ¬ify_pa); 738 if (!notify_addr) 739 return -ENOMEM; 740 741 return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr); 742} 743 744static 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 762int 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 774static 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 795int 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 816int 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 824void 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 833int 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 864int 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 872u32 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 880u32 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 888u32 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 896void 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 902enum vnic_dev_intr_mode vnic_dev_get_intr_mode( 903 struct vnic_dev *vdev) 904{ 905 return vdev->intr_mode; 906} 907 908u32 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 914u32 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 920u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev) 921{ 922 return vdev->intr_coal_timer_info.max_usec; 923} 924 925void 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} 944EXPORT_SYMBOL(vnic_dev_unregister); 945 946struct 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 968err_out: 969 vnic_dev_unregister(vdev); 970 return NULL; 971} 972EXPORT_SYMBOL(vnic_dev_register); 973 974struct pci_dev *vnic_dev_get_pdev(struct vnic_dev *vdev) 975{ 976 return vdev->pdev; 977} 978EXPORT_SYMBOL(vnic_dev_get_pdev); 979 980int 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 1003int 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 1013static 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 1027int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status) 1028{ 1029 return vnic_dev_cmd_status(vdev, CMD_ENABLE2, status); 1030} 1031 1032int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status) 1033{ 1034 return vnic_dev_cmd_status(vdev, CMD_DEINIT, status); 1035} 1036 1037int 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 */ 1063int 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} 1109