1/* 2 * Copyright 2008 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#include <linux/kernel.h> 20#include <linux/errno.h> 21#include <linux/types.h> 22#include <linux/pci.h> 23#include <linux/delay.h> 24#include <linux/if_ether.h> 25#include <linux/slab.h> 26#include "vnic_resource.h" 27#include "vnic_devcmd.h" 28#include "vnic_dev.h" 29#include "vnic_stats.h" 30#include "vnic_wq.h" 31 32struct devcmd2_controller { 33 struct vnic_wq_ctrl *wq_ctrl; 34 struct vnic_dev_ring results_ring; 35 struct vnic_wq wq; 36 struct vnic_devcmd2 *cmd_ring; 37 struct devcmd2_result *result; 38 u16 next_result; 39 u16 result_size; 40 int color; 41}; 42 43enum vnic_proxy_type { 44 PROXY_NONE, 45 PROXY_BY_BDF, 46 PROXY_BY_INDEX, 47}; 48 49struct vnic_res { 50 void __iomem *vaddr; 51 unsigned int count; 52}; 53 54struct vnic_dev { 55 void *priv; 56 struct pci_dev *pdev; 57 struct vnic_res res[RES_TYPE_MAX]; 58 enum vnic_dev_intr_mode intr_mode; 59 struct vnic_devcmd __iomem *devcmd; 60 struct vnic_devcmd_notify *notify; 61 struct vnic_devcmd_notify notify_copy; 62 dma_addr_t notify_pa; 63 u32 *linkstatus; 64 dma_addr_t linkstatus_pa; 65 struct vnic_stats *stats; 66 dma_addr_t stats_pa; 67 struct vnic_devcmd_fw_info *fw_info; 68 dma_addr_t fw_info_pa; 69 enum vnic_proxy_type proxy; 70 u32 proxy_index; 71 u64 args[VNIC_DEVCMD_NARGS]; 72 struct devcmd2_controller *devcmd2; 73 int (*devcmd_rtn)(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 74 int wait); 75}; 76 77#define VNIC_MAX_RES_HDR_SIZE \ 78 (sizeof(struct vnic_resource_header) + \ 79 sizeof(struct vnic_resource) * RES_TYPE_MAX) 80#define VNIC_RES_STRIDE 128 81 82void *vnic_dev_priv(struct vnic_dev *vdev) 83{ 84 return vdev->priv; 85} 86 87static int vnic_dev_discover_res(struct vnic_dev *vdev, 88 struct vnic_dev_bar *bar) 89{ 90 struct vnic_resource_header __iomem *rh; 91 struct vnic_resource __iomem *r; 92 u8 type; 93 94 if (bar->len < VNIC_MAX_RES_HDR_SIZE) { 95 printk(KERN_ERR "vNIC BAR0 res hdr length error\n"); 96 return -EINVAL; 97 } 98 99 rh = bar->vaddr; 100 if (!rh) { 101 printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n"); 102 return -EINVAL; 103 } 104 105 if (ioread32(&rh->magic) != VNIC_RES_MAGIC || 106 ioread32(&rh->version) != VNIC_RES_VERSION) { 107 printk(KERN_ERR "vNIC BAR0 res magic/version error " 108 "exp (%lx/%lx) curr (%x/%x)\n", 109 VNIC_RES_MAGIC, VNIC_RES_VERSION, 110 ioread32(&rh->magic), ioread32(&rh->version)); 111 return -EINVAL; 112 } 113 114 r = (struct vnic_resource __iomem *)(rh + 1); 115 116 while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { 117 118 u8 bar_num = ioread8(&r->bar); 119 u32 bar_offset = ioread32(&r->bar_offset); 120 u32 count = ioread32(&r->count); 121 u32 len; 122 123 r++; 124 125 if (bar_num != 0) /* only mapping in BAR0 resources */ 126 continue; 127 128 switch (type) { 129 case RES_TYPE_WQ: 130 case RES_TYPE_RQ: 131 case RES_TYPE_CQ: 132 case RES_TYPE_INTR_CTRL: 133 /* each count is stride bytes long */ 134 len = count * VNIC_RES_STRIDE; 135 if (len + bar_offset > bar->len) { 136 printk(KERN_ERR "vNIC BAR0 resource %d " 137 "out-of-bounds, offset 0x%x + " 138 "size 0x%x > bar len 0x%lx\n", 139 type, bar_offset, 140 len, 141 bar->len); 142 return -EINVAL; 143 } 144 break; 145 case RES_TYPE_INTR_PBA_LEGACY: 146 case RES_TYPE_DEVCMD2: 147 case RES_TYPE_DEVCMD: 148 len = count; 149 break; 150 default: 151 continue; 152 } 153 154 vdev->res[type].count = count; 155 vdev->res[type].vaddr = (char __iomem *)bar->vaddr + bar_offset; 156 } 157 158 return 0; 159} 160 161unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, 162 enum vnic_res_type type) 163{ 164 return vdev->res[type].count; 165} 166 167void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, 168 unsigned int index) 169{ 170 if (!vdev->res[type].vaddr) 171 return NULL; 172 173 switch (type) { 174 case RES_TYPE_WQ: 175 case RES_TYPE_RQ: 176 case RES_TYPE_CQ: 177 case RES_TYPE_INTR_CTRL: 178 return (char __iomem *)vdev->res[type].vaddr + 179 index * VNIC_RES_STRIDE; 180 default: 181 return (char __iomem *)vdev->res[type].vaddr; 182 } 183} 184 185unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, 186 unsigned int desc_count, 187 unsigned int desc_size) 188{ 189 /* The base address of the desc rings must be 512 byte aligned. 190 * Descriptor count is aligned to groups of 32 descriptors. A 191 * count of 0 means the maximum 4096 descriptors. Descriptor 192 * size is aligned to 16 bytes. 193 */ 194 195 unsigned int count_align = 32; 196 unsigned int desc_align = 16; 197 198 ring->base_align = 512; 199 200 if (desc_count == 0) 201 desc_count = 4096; 202 203 ring->desc_count = ALIGN(desc_count, count_align); 204 205 ring->desc_size = ALIGN(desc_size, desc_align); 206 207 ring->size = ring->desc_count * ring->desc_size; 208 ring->size_unaligned = ring->size + ring->base_align; 209 210 return ring->size_unaligned; 211} 212 213void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) 214{ 215 memset(ring->descs, 0, ring->size); 216} 217 218int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, 219 unsigned int desc_count, unsigned int desc_size) 220{ 221 vnic_dev_desc_ring_size(ring, desc_count, desc_size); 222 223 ring->descs_unaligned = dma_alloc_coherent(&vdev->pdev->dev, 224 ring->size_unaligned, 225 &ring->base_addr_unaligned, GFP_KERNEL); 226 227 if (!ring->descs_unaligned) { 228 printk(KERN_ERR 229 "Failed to allocate ring (size=%d), aborting\n", 230 (int)ring->size); 231 return -ENOMEM; 232 } 233 234 ring->base_addr = ALIGN(ring->base_addr_unaligned, 235 ring->base_align); 236 ring->descs = (u8 *)ring->descs_unaligned + 237 (ring->base_addr - ring->base_addr_unaligned); 238 239 vnic_dev_clear_desc_ring(ring); 240 241 ring->desc_avail = ring->desc_count - 1; 242 243 return 0; 244} 245 246void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) 247{ 248 if (ring->descs) { 249 dma_free_coherent(&vdev->pdev->dev, 250 ring->size_unaligned, 251 ring->descs_unaligned, 252 ring->base_addr_unaligned); 253 ring->descs = NULL; 254 } 255} 256 257static int vnic_dev_cmd1(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, int wait) 258{ 259 struct vnic_devcmd __iomem *devcmd = vdev->devcmd; 260 int delay; 261 u32 status; 262 static const int dev_cmd_err[] = { 263 /* convert from fw's version of error.h to host's version */ 264 0, /* ERR_SUCCESS */ 265 EINVAL, /* ERR_EINVAL */ 266 EFAULT, /* ERR_EFAULT */ 267 EPERM, /* ERR_EPERM */ 268 EBUSY, /* ERR_EBUSY */ 269 }; 270 int err; 271 u64 *a0 = &vdev->args[0]; 272 u64 *a1 = &vdev->args[1]; 273 274 status = ioread32(&devcmd->status); 275 if (status & STAT_BUSY) { 276 printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd)); 277 return -EBUSY; 278 } 279 280 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { 281 writeq(*a0, &devcmd->args[0]); 282 writeq(*a1, &devcmd->args[1]); 283 wmb(); 284 } 285 286 iowrite32(cmd, &devcmd->cmd); 287 288 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) 289 return 0; 290 291 for (delay = 0; delay < wait; delay++) { 292 293 udelay(100); 294 295 status = ioread32(&devcmd->status); 296 if (!(status & STAT_BUSY)) { 297 298 if (status & STAT_ERROR) { 299 err = dev_cmd_err[(int)readq(&devcmd->args[0])]; 300 printk(KERN_ERR "Error %d devcmd %d\n", 301 err, _CMD_N(cmd)); 302 return -err; 303 } 304 305 if (_CMD_DIR(cmd) & _CMD_DIR_READ) { 306 rmb(); 307 *a0 = readq(&devcmd->args[0]); 308 *a1 = readq(&devcmd->args[1]); 309 } 310 311 return 0; 312 } 313 } 314 315 printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd)); 316 return -ETIMEDOUT; 317} 318 319static int vnic_dev_cmd2(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 320 int wait) 321{ 322 struct devcmd2_controller *dc2c = vdev->devcmd2; 323 struct devcmd2_result *result; 324 u8 color; 325 unsigned int i; 326 int delay; 327 int err; 328 u32 fetch_index; 329 u32 posted; 330 u32 new_posted; 331 332 posted = ioread32(&dc2c->wq_ctrl->posted_index); 333 fetch_index = ioread32(&dc2c->wq_ctrl->fetch_index); 334 335 if (posted == 0xFFFFFFFF || fetch_index == 0xFFFFFFFF) { 336 /* Hardware surprise removal: return error */ 337 pr_err("%s: devcmd2 invalid posted or fetch index on cmd %d\n", 338 pci_name(vdev->pdev), _CMD_N(cmd)); 339 pr_err("%s: fetch index: %u, posted index: %u\n", 340 pci_name(vdev->pdev), fetch_index, posted); 341 342 return -ENODEV; 343 344 } 345 346 new_posted = (posted + 1) % DEVCMD2_RING_SIZE; 347 348 if (new_posted == fetch_index) { 349 pr_err("%s: devcmd2 wq full while issuing cmd %d\n", 350 pci_name(vdev->pdev), _CMD_N(cmd)); 351 pr_err("%s: fetch index: %u, posted index: %u\n", 352 pci_name(vdev->pdev), fetch_index, posted); 353 return -EBUSY; 354 355 } 356 dc2c->cmd_ring[posted].cmd = cmd; 357 dc2c->cmd_ring[posted].flags = 0; 358 359 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) 360 dc2c->cmd_ring[posted].flags |= DEVCMD2_FNORESULT; 361 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { 362 for (i = 0; i < VNIC_DEVCMD_NARGS; i++) 363 dc2c->cmd_ring[posted].args[i] = vdev->args[i]; 364 365 } 366 367 /* Adding write memory barrier prevents compiler and/or CPU 368 * reordering, thus avoiding descriptor posting before 369 * descriptor is initialized. Otherwise, hardware can read 370 * stale descriptor fields. 371 */ 372 wmb(); 373 iowrite32(new_posted, &dc2c->wq_ctrl->posted_index); 374 375 if (dc2c->cmd_ring[posted].flags & DEVCMD2_FNORESULT) 376 return 0; 377 378 result = dc2c->result + dc2c->next_result; 379 color = dc2c->color; 380 381 dc2c->next_result++; 382 if (dc2c->next_result == dc2c->result_size) { 383 dc2c->next_result = 0; 384 dc2c->color = dc2c->color ? 0 : 1; 385 } 386 387 for (delay = 0; delay < wait; delay++) { 388 udelay(100); 389 if (result->color == color) { 390 if (result->error) { 391 err = -(int) result->error; 392 if (err != ERR_ECMDUNKNOWN || 393 cmd != CMD_CAPABILITY) 394 pr_err("%s:Error %d devcmd %d\n", 395 pci_name(vdev->pdev), 396 err, _CMD_N(cmd)); 397 return err; 398 } 399 if (_CMD_DIR(cmd) & _CMD_DIR_READ) { 400 rmb(); /*prevent reorder while reding result*/ 401 for (i = 0; i < VNIC_DEVCMD_NARGS; i++) 402 vdev->args[i] = result->results[i]; 403 } 404 return 0; 405 } 406 } 407 408 pr_err("%s:Timed out devcmd %d\n", pci_name(vdev->pdev), _CMD_N(cmd)); 409 410 return -ETIMEDOUT; 411} 412 413 414static int vnic_dev_init_devcmd1(struct vnic_dev *vdev) 415{ 416 vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); 417 if (!vdev->devcmd) 418 return -ENODEV; 419 420 vdev->devcmd_rtn = &vnic_dev_cmd1; 421 return 0; 422} 423 424 425static int vnic_dev_init_devcmd2(struct vnic_dev *vdev) 426{ 427 int err; 428 unsigned int fetch_index; 429 430 if (vdev->devcmd2) 431 return 0; 432 433 vdev->devcmd2 = kzalloc(sizeof(*vdev->devcmd2), GFP_ATOMIC); 434 if (!vdev->devcmd2) 435 return -ENOMEM; 436 437 vdev->devcmd2->color = 1; 438 vdev->devcmd2->result_size = DEVCMD2_RING_SIZE; 439 err = vnic_wq_devcmd2_alloc(vdev, &vdev->devcmd2->wq, 440 DEVCMD2_RING_SIZE, DEVCMD2_DESC_SIZE); 441 if (err) 442 goto err_free_devcmd2; 443 444 fetch_index = ioread32(&vdev->devcmd2->wq.ctrl->fetch_index); 445 if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */ 446 pr_err("error in devcmd2 init"); 447 err = -ENODEV; 448 goto err_free_wq; 449 } 450 451 /* 452 * Don't change fetch_index ever and 453 * set posted_index same as fetch_index 454 * when setting up the WQ for devcmd2. 455 */ 456 vnic_wq_init_start(&vdev->devcmd2->wq, 0, fetch_index, 457 fetch_index, 0, 0); 458 459 vnic_wq_enable(&vdev->devcmd2->wq); 460 461 err = vnic_dev_alloc_desc_ring(vdev, &vdev->devcmd2->results_ring, 462 DEVCMD2_RING_SIZE, DEVCMD2_DESC_SIZE); 463 if (err) 464 goto err_disable_wq; 465 466 vdev->devcmd2->result = 467 (struct devcmd2_result *) vdev->devcmd2->results_ring.descs; 468 vdev->devcmd2->cmd_ring = 469 (struct vnic_devcmd2 *) vdev->devcmd2->wq.ring.descs; 470 vdev->devcmd2->wq_ctrl = vdev->devcmd2->wq.ctrl; 471 vdev->args[0] = (u64) vdev->devcmd2->results_ring.base_addr | 472 VNIC_PADDR_TARGET; 473 vdev->args[1] = DEVCMD2_RING_SIZE; 474 475 err = vnic_dev_cmd2(vdev, CMD_INITIALIZE_DEVCMD2, 1000); 476 if (err) 477 goto err_free_desc_ring; 478 479 vdev->devcmd_rtn = &vnic_dev_cmd2; 480 481 return 0; 482 483err_free_desc_ring: 484 vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring); 485err_disable_wq: 486 vnic_wq_disable(&vdev->devcmd2->wq); 487err_free_wq: 488 vnic_wq_free(&vdev->devcmd2->wq); 489err_free_devcmd2: 490 kfree(vdev->devcmd2); 491 vdev->devcmd2 = NULL; 492 493 return err; 494} 495 496 497static void vnic_dev_deinit_devcmd2(struct vnic_dev *vdev) 498{ 499 vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring); 500 vnic_wq_disable(&vdev->devcmd2->wq); 501 vnic_wq_free(&vdev->devcmd2->wq); 502 kfree(vdev->devcmd2); 503 vdev->devcmd2 = NULL; 504 vdev->devcmd_rtn = &vnic_dev_cmd1; 505} 506 507 508static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev, 509 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) 510{ 511 int err; 512 513 vdev->args[0] = *a0; 514 vdev->args[1] = *a1; 515 516 err = (*vdev->devcmd_rtn)(vdev, cmd, wait); 517 518 *a0 = vdev->args[0]; 519 *a1 = vdev->args[1]; 520 521 return err; 522} 523 524 525int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 526 u64 *a0, u64 *a1, int wait) 527{ 528 memset(vdev->args, 0, sizeof(vdev->args)); 529 530 switch (vdev->proxy) { 531 case PROXY_NONE: 532 default: 533 return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait); 534 } 535} 536 537 538int vnic_dev_fw_info(struct vnic_dev *vdev, 539 struct vnic_devcmd_fw_info **fw_info) 540{ 541 u64 a0, a1 = 0; 542 int wait = 1000; 543 int err = 0; 544 545 if (!vdev->fw_info) { 546 vdev->fw_info = dma_alloc_coherent(&vdev->pdev->dev, 547 sizeof(struct vnic_devcmd_fw_info), 548 &vdev->fw_info_pa, GFP_KERNEL); 549 if (!vdev->fw_info) 550 return -ENOMEM; 551 552 a0 = vdev->fw_info_pa; 553 554 /* only get fw_info once and cache it */ 555 err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); 556 } 557 558 *fw_info = vdev->fw_info; 559 560 return err; 561} 562 563int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, 564 void *value) 565{ 566 u64 a0, a1; 567 int wait = 1000; 568 int err; 569 570 a0 = offset; 571 a1 = size; 572 573 err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); 574 575 switch (size) { 576 case 1: 577 *(u8 *)value = (u8)a0; 578 break; 579 case 2: 580 *(u16 *)value = (u16)a0; 581 break; 582 case 4: 583 *(u32 *)value = (u32)a0; 584 break; 585 case 8: 586 *(u64 *)value = a0; 587 break; 588 default: 589 BUG(); 590 break; 591 } 592 593 return err; 594} 595 596int vnic_dev_stats_clear(struct vnic_dev *vdev) 597{ 598 u64 a0 = 0, a1 = 0; 599 int wait = 1000; 600 return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait); 601} 602 603int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) 604{ 605 u64 a0, a1; 606 int wait = 1000; 607 608 if (!vdev->stats) { 609 vdev->stats = dma_alloc_coherent(&vdev->pdev->dev, 610 sizeof(struct vnic_stats), &vdev->stats_pa, GFP_KERNEL); 611 if (!vdev->stats) 612 return -ENOMEM; 613 } 614 615 *stats = vdev->stats; 616 a0 = vdev->stats_pa; 617 a1 = sizeof(struct vnic_stats); 618 619 return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); 620} 621 622int vnic_dev_close(struct vnic_dev *vdev) 623{ 624 u64 a0 = 0, a1 = 0; 625 int wait = 1000; 626 return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); 627} 628 629int vnic_dev_enable(struct vnic_dev *vdev) 630{ 631 u64 a0 = 0, a1 = 0; 632 int wait = 1000; 633 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); 634} 635 636int vnic_dev_disable(struct vnic_dev *vdev) 637{ 638 u64 a0 = 0, a1 = 0; 639 int wait = 1000; 640 return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); 641} 642 643int vnic_dev_open(struct vnic_dev *vdev, int arg) 644{ 645 u64 a0 = (u32)arg, a1 = 0; 646 int wait = 1000; 647 return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); 648} 649 650int vnic_dev_open_done(struct vnic_dev *vdev, int *done) 651{ 652 u64 a0 = 0, a1 = 0; 653 int wait = 1000; 654 int err; 655 656 *done = 0; 657 658 err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); 659 if (err) 660 return err; 661 662 *done = (a0 == 0); 663 664 return 0; 665} 666 667int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) 668{ 669 u64 a0 = (u32)arg, a1 = 0; 670 int wait = 1000; 671 return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); 672} 673 674int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) 675{ 676 u64 a0 = 0, a1 = 0; 677 int wait = 1000; 678 int err; 679 680 *done = 0; 681 682 err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); 683 if (err) 684 return err; 685 686 *done = (a0 == 0); 687 688 return 0; 689} 690 691int vnic_dev_hang_notify(struct vnic_dev *vdev) 692{ 693 u64 a0 = 0, a1 = 0; 694 int wait = 1000; 695 return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); 696} 697 698int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) 699{ 700 u64 a[2] = {}; 701 int wait = 1000; 702 int err, i; 703 704 for (i = 0; i < ETH_ALEN; i++) 705 mac_addr[i] = 0; 706 707 err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a[0], &a[1], wait); 708 if (err) 709 return err; 710 711 for (i = 0; i < ETH_ALEN; i++) 712 mac_addr[i] = ((u8 *)&a)[i]; 713 714 return 0; 715} 716 717void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, 718 int broadcast, int promisc, int allmulti) 719{ 720 u64 a0, a1 = 0; 721 int wait = 1000; 722 int err; 723 724 a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | 725 (multicast ? CMD_PFILTER_MULTICAST : 0) | 726 (broadcast ? CMD_PFILTER_BROADCAST : 0) | 727 (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | 728 (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); 729 730 err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); 731 if (err) 732 printk(KERN_ERR "Can't set packet filter\n"); 733} 734 735void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) 736{ 737 u64 a[2] = {}; 738 int wait = 1000; 739 int err; 740 int i; 741 742 for (i = 0; i < ETH_ALEN; i++) 743 ((u8 *)&a)[i] = addr[i]; 744 745 err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a[0], &a[1], wait); 746 if (err) 747 pr_err("Can't add addr [%pM], %d\n", addr, err); 748} 749 750void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) 751{ 752 u64 a[2] = {}; 753 int wait = 1000; 754 int err; 755 int i; 756 757 for (i = 0; i < ETH_ALEN; i++) 758 ((u8 *)&a)[i] = addr[i]; 759 760 err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a[0], &a[1], wait); 761 if (err) 762 pr_err("Can't del addr [%pM], %d\n", addr, err); 763} 764 765int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) 766{ 767 u64 a0, a1; 768 int wait = 1000; 769 770 if (!vdev->notify) { 771 vdev->notify = dma_alloc_coherent(&vdev->pdev->dev, 772 sizeof(struct vnic_devcmd_notify), 773 &vdev->notify_pa, GFP_KERNEL); 774 if (!vdev->notify) 775 return -ENOMEM; 776 } 777 778 a0 = vdev->notify_pa; 779 a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; 780 a1 += sizeof(struct vnic_devcmd_notify); 781 782 return vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); 783} 784 785void vnic_dev_notify_unset(struct vnic_dev *vdev) 786{ 787 u64 a0, a1; 788 int wait = 1000; 789 790 a0 = 0; /* paddr = 0 to unset notify buffer */ 791 a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ 792 a1 += sizeof(struct vnic_devcmd_notify); 793 794 vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); 795} 796 797static int vnic_dev_notify_ready(struct vnic_dev *vdev) 798{ 799 u32 *words; 800 unsigned int nwords = sizeof(struct vnic_devcmd_notify) / 4; 801 unsigned int i; 802 u32 csum; 803 804 if (!vdev->notify) 805 return 0; 806 807 do { 808 csum = 0; 809 memcpy(&vdev->notify_copy, vdev->notify, 810 sizeof(struct vnic_devcmd_notify)); 811 words = (u32 *)&vdev->notify_copy; 812 for (i = 1; i < nwords; i++) 813 csum += words[i]; 814 } while (csum != words[0]); 815 816 return 1; 817} 818 819int vnic_dev_init(struct vnic_dev *vdev, int arg) 820{ 821 u64 a0 = (u32)arg, a1 = 0; 822 int wait = 1000; 823 return vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); 824} 825 826u16 vnic_dev_set_default_vlan(struct vnic_dev *vdev, u16 new_default_vlan) 827{ 828 u64 a0 = new_default_vlan, a1 = 0; 829 int wait = 1000; 830 int old_vlan = 0; 831 832 old_vlan = vnic_dev_cmd(vdev, CMD_SET_DEFAULT_VLAN, &a0, &a1, wait); 833 return (u16)old_vlan; 834} 835 836int vnic_dev_link_status(struct vnic_dev *vdev) 837{ 838 if (vdev->linkstatus) 839 return *vdev->linkstatus; 840 841 if (!vnic_dev_notify_ready(vdev)) 842 return 0; 843 844 return vdev->notify_copy.link_state; 845} 846 847u32 vnic_dev_port_speed(struct vnic_dev *vdev) 848{ 849 if (!vnic_dev_notify_ready(vdev)) 850 return 0; 851 852 return vdev->notify_copy.port_speed; 853} 854 855u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) 856{ 857 if (!vnic_dev_notify_ready(vdev)) 858 return 0; 859 860 return vdev->notify_copy.msglvl; 861} 862 863u32 vnic_dev_mtu(struct vnic_dev *vdev) 864{ 865 if (!vnic_dev_notify_ready(vdev)) 866 return 0; 867 868 return vdev->notify_copy.mtu; 869} 870 871u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev) 872{ 873 if (!vnic_dev_notify_ready(vdev)) 874 return 0; 875 876 return vdev->notify_copy.link_down_cnt; 877} 878 879void vnic_dev_set_intr_mode(struct vnic_dev *vdev, 880 enum vnic_dev_intr_mode intr_mode) 881{ 882 vdev->intr_mode = intr_mode; 883} 884 885enum vnic_dev_intr_mode vnic_dev_get_intr_mode( 886 struct vnic_dev *vdev) 887{ 888 return vdev->intr_mode; 889} 890 891void vnic_dev_unregister(struct vnic_dev *vdev) 892{ 893 if (vdev) { 894 if (vdev->notify) 895 dma_free_coherent(&vdev->pdev->dev, 896 sizeof(struct vnic_devcmd_notify), 897 vdev->notify, 898 vdev->notify_pa); 899 if (vdev->linkstatus) 900 dma_free_coherent(&vdev->pdev->dev, 901 sizeof(u32), 902 vdev->linkstatus, 903 vdev->linkstatus_pa); 904 if (vdev->stats) 905 dma_free_coherent(&vdev->pdev->dev, 906 sizeof(struct vnic_stats), 907 vdev->stats, vdev->stats_pa); 908 if (vdev->fw_info) 909 dma_free_coherent(&vdev->pdev->dev, 910 sizeof(struct vnic_devcmd_fw_info), 911 vdev->fw_info, vdev->fw_info_pa); 912 if (vdev->devcmd2) 913 vnic_dev_deinit_devcmd2(vdev); 914 kfree(vdev); 915 } 916} 917 918struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, 919 void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar) 920{ 921 if (!vdev) { 922 vdev = kzalloc(sizeof(struct vnic_dev), GFP_KERNEL); 923 if (!vdev) 924 return NULL; 925 } 926 927 vdev->priv = priv; 928 vdev->pdev = pdev; 929 930 if (vnic_dev_discover_res(vdev, bar)) 931 goto err_out; 932 933 return vdev; 934 935err_out: 936 vnic_dev_unregister(vdev); 937 return NULL; 938} 939 940int vnic_dev_cmd_init(struct vnic_dev *vdev) 941{ 942 int err; 943 void *p; 944 945 p = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD2, 0); 946 if (p) { 947 pr_err("fnic: DEVCMD2 resource found!\n"); 948 err = vnic_dev_init_devcmd2(vdev); 949 } else { 950 pr_err("fnic: DEVCMD2 not found, fall back to Devcmd\n"); 951 err = vnic_dev_init_devcmd1(vdev); 952 } 953 954 return err; 955} 956