1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright 2008 Cisco Systems, Inc. All rights reserved. 4 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 5 */ 6 7#include <linux/kernel.h> 8#include <linux/errno.h> 9#include <linux/types.h> 10#include <linux/pci.h> 11#include <linux/delay.h> 12#include <linux/if_ether.h> 13#include <linux/slab.h> 14#include "vnic_resource.h" 15#include "vnic_devcmd.h" 16#include "vnic_dev.h" 17#include "vnic_stats.h" 18#include "vnic_wq.h" 19 20struct devcmd2_controller { 21 struct vnic_wq_ctrl *wq_ctrl; 22 struct vnic_dev_ring results_ring; 23 struct vnic_wq wq; 24 struct vnic_devcmd2 *cmd_ring; 25 struct devcmd2_result *result; 26 u16 next_result; 27 u16 result_size; 28 int color; 29}; 30 31enum vnic_proxy_type { 32 PROXY_NONE, 33 PROXY_BY_BDF, 34 PROXY_BY_INDEX, 35}; 36 37struct vnic_res { 38 void __iomem *vaddr; 39 unsigned int count; 40}; 41 42struct vnic_dev { 43 void *priv; 44 struct pci_dev *pdev; 45 struct vnic_res res[RES_TYPE_MAX]; 46 enum vnic_dev_intr_mode intr_mode; 47 struct vnic_devcmd __iomem *devcmd; 48 struct vnic_devcmd_notify *notify; 49 struct vnic_devcmd_notify notify_copy; 50 dma_addr_t notify_pa; 51 u32 *linkstatus; 52 dma_addr_t linkstatus_pa; 53 struct vnic_stats *stats; 54 dma_addr_t stats_pa; 55 struct vnic_devcmd_fw_info *fw_info; 56 dma_addr_t fw_info_pa; 57 enum vnic_proxy_type proxy; 58 u32 proxy_index; 59 u64 args[VNIC_DEVCMD_NARGS]; 60 struct devcmd2_controller *devcmd2; 61 int (*devcmd_rtn)(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 62 int wait); 63}; 64 65#define VNIC_MAX_RES_HDR_SIZE \ 66 (sizeof(struct vnic_resource_header) + \ 67 sizeof(struct vnic_resource) * RES_TYPE_MAX) 68#define VNIC_RES_STRIDE 128 69 70void *vnic_dev_priv(struct vnic_dev *vdev) 71{ 72 return vdev->priv; 73} 74 75static int vnic_dev_discover_res(struct vnic_dev *vdev, 76 struct vnic_dev_bar *bar) 77{ 78 struct vnic_resource_header __iomem *rh; 79 struct vnic_resource __iomem *r; 80 u8 type; 81 82 if (bar->len < VNIC_MAX_RES_HDR_SIZE) { 83 printk(KERN_ERR "vNIC BAR0 res hdr length error\n"); 84 return -EINVAL; 85 } 86 87 rh = bar->vaddr; 88 if (!rh) { 89 printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n"); 90 return -EINVAL; 91 } 92 93 if (ioread32(&rh->magic) != VNIC_RES_MAGIC || 94 ioread32(&rh->version) != VNIC_RES_VERSION) { 95 printk(KERN_ERR "vNIC BAR0 res magic/version error " 96 "exp (%lx/%lx) curr (%x/%x)\n", 97 VNIC_RES_MAGIC, VNIC_RES_VERSION, 98 ioread32(&rh->magic), ioread32(&rh->version)); 99 return -EINVAL; 100 } 101 102 r = (struct vnic_resource __iomem *)(rh + 1); 103 104 while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { 105 106 u8 bar_num = ioread8(&r->bar); 107 u32 bar_offset = ioread32(&r->bar_offset); 108 u32 count = ioread32(&r->count); 109 u32 len; 110 111 r++; 112 113 if (bar_num != 0) /* only mapping in BAR0 resources */ 114 continue; 115 116 switch (type) { 117 case RES_TYPE_WQ: 118 case RES_TYPE_RQ: 119 case RES_TYPE_CQ: 120 case RES_TYPE_INTR_CTRL: 121 /* each count is stride bytes long */ 122 len = count * VNIC_RES_STRIDE; 123 if (len + bar_offset > bar->len) { 124 printk(KERN_ERR "vNIC BAR0 resource %d " 125 "out-of-bounds, offset 0x%x + " 126 "size 0x%x > bar len 0x%lx\n", 127 type, bar_offset, 128 len, 129 bar->len); 130 return -EINVAL; 131 } 132 break; 133 case RES_TYPE_INTR_PBA_LEGACY: 134 case RES_TYPE_DEVCMD2: 135 case RES_TYPE_DEVCMD: 136 len = count; 137 break; 138 default: 139 continue; 140 } 141 142 vdev->res[type].count = count; 143 vdev->res[type].vaddr = (char __iomem *)bar->vaddr + bar_offset; 144 } 145 146 pr_info("res_type_wq: %d res_type_rq: %d res_type_cq: %d res_type_intr_ctrl: %d\n", 147 vdev->res[RES_TYPE_WQ].count, vdev->res[RES_TYPE_RQ].count, 148 vdev->res[RES_TYPE_CQ].count, vdev->res[RES_TYPE_INTR_CTRL].count); 149 150 return 0; 151} 152 153unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, 154 enum vnic_res_type type) 155{ 156 return vdev->res[type].count; 157} 158 159void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, 160 unsigned int index) 161{ 162 if (!vdev->res[type].vaddr) 163 return NULL; 164 165 switch (type) { 166 case RES_TYPE_WQ: 167 case RES_TYPE_RQ: 168 case RES_TYPE_CQ: 169 case RES_TYPE_INTR_CTRL: 170 return (char __iomem *)vdev->res[type].vaddr + 171 index * VNIC_RES_STRIDE; 172 default: 173 return (char __iomem *)vdev->res[type].vaddr; 174 } 175} 176 177unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, 178 unsigned int desc_count, 179 unsigned int desc_size) 180{ 181 /* The base address of the desc rings must be 512 byte aligned. 182 * Descriptor count is aligned to groups of 32 descriptors. A 183 * count of 0 means the maximum 4096 descriptors. Descriptor 184 * size is aligned to 16 bytes. 185 */ 186 187 unsigned int count_align = 32; 188 unsigned int desc_align = 16; 189 190 ring->base_align = 512; 191 192 if (desc_count == 0) 193 desc_count = 4096; 194 195 ring->desc_count = ALIGN(desc_count, count_align); 196 197 ring->desc_size = ALIGN(desc_size, desc_align); 198 199 ring->size = ring->desc_count * ring->desc_size; 200 ring->size_unaligned = ring->size + ring->base_align; 201 202 return ring->size_unaligned; 203} 204 205void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) 206{ 207 memset(ring->descs, 0, ring->size); 208} 209 210int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, 211 unsigned int desc_count, unsigned int desc_size) 212{ 213 vnic_dev_desc_ring_size(ring, desc_count, desc_size); 214 215 ring->descs_unaligned = dma_alloc_coherent(&vdev->pdev->dev, 216 ring->size_unaligned, 217 &ring->base_addr_unaligned, GFP_KERNEL); 218 219 if (!ring->descs_unaligned) { 220 printk(KERN_ERR 221 "Failed to allocate ring (size=%d), aborting\n", 222 (int)ring->size); 223 return -ENOMEM; 224 } 225 226 ring->base_addr = ALIGN(ring->base_addr_unaligned, 227 ring->base_align); 228 ring->descs = (u8 *)ring->descs_unaligned + 229 (ring->base_addr - ring->base_addr_unaligned); 230 231 vnic_dev_clear_desc_ring(ring); 232 233 ring->desc_avail = ring->desc_count - 1; 234 235 return 0; 236} 237 238void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) 239{ 240 if (ring->descs) { 241 dma_free_coherent(&vdev->pdev->dev, 242 ring->size_unaligned, 243 ring->descs_unaligned, 244 ring->base_addr_unaligned); 245 ring->descs = NULL; 246 } 247} 248 249static int vnic_dev_cmd1(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, int wait) 250{ 251 struct vnic_devcmd __iomem *devcmd = vdev->devcmd; 252 int delay; 253 u32 status; 254 static const int dev_cmd_err[] = { 255 /* convert from fw's version of error.h to host's version */ 256 0, /* ERR_SUCCESS */ 257 EINVAL, /* ERR_EINVAL */ 258 EFAULT, /* ERR_EFAULT */ 259 EPERM, /* ERR_EPERM */ 260 EBUSY, /* ERR_EBUSY */ 261 }; 262 int err; 263 u64 *a0 = &vdev->args[0]; 264 u64 *a1 = &vdev->args[1]; 265 266 status = ioread32(&devcmd->status); 267 if (status & STAT_BUSY) { 268 printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd)); 269 return -EBUSY; 270 } 271 272 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { 273 writeq(*a0, &devcmd->args[0]); 274 writeq(*a1, &devcmd->args[1]); 275 wmb(); 276 } 277 278 iowrite32(cmd, &devcmd->cmd); 279 280 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) 281 return 0; 282 283 for (delay = 0; delay < wait; delay++) { 284 285 udelay(100); 286 287 status = ioread32(&devcmd->status); 288 if (!(status & STAT_BUSY)) { 289 290 if (status & STAT_ERROR) { 291 err = dev_cmd_err[(int)readq(&devcmd->args[0])]; 292 printk(KERN_ERR "Error %d devcmd %d\n", 293 err, _CMD_N(cmd)); 294 return -err; 295 } 296 297 if (_CMD_DIR(cmd) & _CMD_DIR_READ) { 298 rmb(); 299 *a0 = readq(&devcmd->args[0]); 300 *a1 = readq(&devcmd->args[1]); 301 } 302 303 return 0; 304 } 305 } 306 307 printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd)); 308 return -ETIMEDOUT; 309} 310 311static int vnic_dev_cmd2(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 312 int wait) 313{ 314 struct devcmd2_controller *dc2c = vdev->devcmd2; 315 struct devcmd2_result *result; 316 u8 color; 317 unsigned int i; 318 int delay; 319 int err; 320 u32 fetch_index; 321 u32 posted; 322 u32 new_posted; 323 324 posted = ioread32(&dc2c->wq_ctrl->posted_index); 325 fetch_index = ioread32(&dc2c->wq_ctrl->fetch_index); 326 327 if (posted == 0xFFFFFFFF || fetch_index == 0xFFFFFFFF) { 328 /* Hardware surprise removal: return error */ 329 pr_err("%s: devcmd2 invalid posted or fetch index on cmd %d\n", 330 pci_name(vdev->pdev), _CMD_N(cmd)); 331 pr_err("%s: fetch index: %u, posted index: %u\n", 332 pci_name(vdev->pdev), fetch_index, posted); 333 334 return -ENODEV; 335 336 } 337 338 new_posted = (posted + 1) % DEVCMD2_RING_SIZE; 339 340 if (new_posted == fetch_index) { 341 pr_err("%s: devcmd2 wq full while issuing cmd %d\n", 342 pci_name(vdev->pdev), _CMD_N(cmd)); 343 pr_err("%s: fetch index: %u, posted index: %u\n", 344 pci_name(vdev->pdev), fetch_index, posted); 345 return -EBUSY; 346 347 } 348 dc2c->cmd_ring[posted].cmd = cmd; 349 dc2c->cmd_ring[posted].flags = 0; 350 351 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) 352 dc2c->cmd_ring[posted].flags |= DEVCMD2_FNORESULT; 353 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { 354 for (i = 0; i < VNIC_DEVCMD_NARGS; i++) 355 dc2c->cmd_ring[posted].args[i] = vdev->args[i]; 356 357 } 358 359 /* Adding write memory barrier prevents compiler and/or CPU 360 * reordering, thus avoiding descriptor posting before 361 * descriptor is initialized. Otherwise, hardware can read 362 * stale descriptor fields. 363 */ 364 wmb(); 365 iowrite32(new_posted, &dc2c->wq_ctrl->posted_index); 366 367 if (dc2c->cmd_ring[posted].flags & DEVCMD2_FNORESULT) 368 return 0; 369 370 result = dc2c->result + dc2c->next_result; 371 color = dc2c->color; 372 373 dc2c->next_result++; 374 if (dc2c->next_result == dc2c->result_size) { 375 dc2c->next_result = 0; 376 dc2c->color = dc2c->color ? 0 : 1; 377 } 378 379 for (delay = 0; delay < wait; delay++) { 380 udelay(100); 381 if (result->color == color) { 382 if (result->error) { 383 err = -(int) result->error; 384 if (err != ERR_ECMDUNKNOWN || 385 cmd != CMD_CAPABILITY) 386 pr_err("%s:Error %d devcmd %d\n", 387 pci_name(vdev->pdev), 388 err, _CMD_N(cmd)); 389 return err; 390 } 391 if (_CMD_DIR(cmd) & _CMD_DIR_READ) { 392 rmb(); /*prevent reorder while reding result*/ 393 for (i = 0; i < VNIC_DEVCMD_NARGS; i++) 394 vdev->args[i] = result->results[i]; 395 } 396 return 0; 397 } 398 } 399 400 pr_err("%s:Timed out devcmd %d\n", pci_name(vdev->pdev), _CMD_N(cmd)); 401 402 return -ETIMEDOUT; 403} 404 405 406static int vnic_dev_init_devcmd1(struct vnic_dev *vdev) 407{ 408 vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); 409 if (!vdev->devcmd) 410 return -ENODEV; 411 412 vdev->devcmd_rtn = &vnic_dev_cmd1; 413 return 0; 414} 415 416 417static int vnic_dev_init_devcmd2(struct vnic_dev *vdev) 418{ 419 int err; 420 unsigned int fetch_index; 421 422 if (vdev->devcmd2) 423 return 0; 424 425 vdev->devcmd2 = kzalloc(sizeof(*vdev->devcmd2), GFP_ATOMIC); 426 if (!vdev->devcmd2) 427 return -ENOMEM; 428 429 vdev->devcmd2->color = 1; 430 vdev->devcmd2->result_size = DEVCMD2_RING_SIZE; 431 err = vnic_wq_devcmd2_alloc(vdev, &vdev->devcmd2->wq, 432 DEVCMD2_RING_SIZE, DEVCMD2_DESC_SIZE); 433 if (err) 434 goto err_free_devcmd2; 435 436 fetch_index = ioread32(&vdev->devcmd2->wq.ctrl->fetch_index); 437 if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */ 438 pr_err("error in devcmd2 init"); 439 err = -ENODEV; 440 goto err_free_wq; 441 } 442 443 /* 444 * Don't change fetch_index ever and 445 * set posted_index same as fetch_index 446 * when setting up the WQ for devcmd2. 447 */ 448 vnic_wq_init_start(&vdev->devcmd2->wq, 0, fetch_index, 449 fetch_index, 0, 0); 450 451 vnic_wq_enable(&vdev->devcmd2->wq); 452 453 err = vnic_dev_alloc_desc_ring(vdev, &vdev->devcmd2->results_ring, 454 DEVCMD2_RING_SIZE, DEVCMD2_DESC_SIZE); 455 if (err) 456 goto err_disable_wq; 457 458 vdev->devcmd2->result = 459 (struct devcmd2_result *) vdev->devcmd2->results_ring.descs; 460 vdev->devcmd2->cmd_ring = 461 (struct vnic_devcmd2 *) vdev->devcmd2->wq.ring.descs; 462 vdev->devcmd2->wq_ctrl = vdev->devcmd2->wq.ctrl; 463 vdev->args[0] = (u64) vdev->devcmd2->results_ring.base_addr | 464 VNIC_PADDR_TARGET; 465 vdev->args[1] = DEVCMD2_RING_SIZE; 466 467 err = vnic_dev_cmd2(vdev, CMD_INITIALIZE_DEVCMD2, 1000); 468 if (err) 469 goto err_free_desc_ring; 470 471 vdev->devcmd_rtn = &vnic_dev_cmd2; 472 473 return 0; 474 475err_free_desc_ring: 476 vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring); 477err_disable_wq: 478 vnic_wq_disable(&vdev->devcmd2->wq); 479err_free_wq: 480 vnic_wq_free(&vdev->devcmd2->wq); 481err_free_devcmd2: 482 kfree(vdev->devcmd2); 483 vdev->devcmd2 = NULL; 484 485 return err; 486} 487 488 489static void vnic_dev_deinit_devcmd2(struct vnic_dev *vdev) 490{ 491 vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring); 492 vnic_wq_disable(&vdev->devcmd2->wq); 493 vnic_wq_free(&vdev->devcmd2->wq); 494 kfree(vdev->devcmd2); 495 vdev->devcmd2 = NULL; 496 vdev->devcmd_rtn = &vnic_dev_cmd1; 497} 498 499 500static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev, 501 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) 502{ 503 int err; 504 505 vdev->args[0] = *a0; 506 vdev->args[1] = *a1; 507 508 err = (*vdev->devcmd_rtn)(vdev, cmd, wait); 509 510 *a0 = vdev->args[0]; 511 *a1 = vdev->args[1]; 512 513 return err; 514} 515 516 517int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 518 u64 *a0, u64 *a1, int wait) 519{ 520 memset(vdev->args, 0, sizeof(vdev->args)); 521 522 switch (vdev->proxy) { 523 case PROXY_NONE: 524 default: 525 return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait); 526 } 527} 528 529 530int vnic_dev_fw_info(struct vnic_dev *vdev, 531 struct vnic_devcmd_fw_info **fw_info) 532{ 533 u64 a0, a1 = 0; 534 int wait = 1000; 535 int err = 0; 536 537 if (!vdev->fw_info) { 538 vdev->fw_info = dma_alloc_coherent(&vdev->pdev->dev, 539 sizeof(struct vnic_devcmd_fw_info), 540 &vdev->fw_info_pa, GFP_KERNEL); 541 if (!vdev->fw_info) 542 return -ENOMEM; 543 544 a0 = vdev->fw_info_pa; 545 546 /* only get fw_info once and cache it */ 547 err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); 548 } 549 550 *fw_info = vdev->fw_info; 551 552 return err; 553} 554 555int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, 556 void *value) 557{ 558 u64 a0, a1; 559 int wait = 1000; 560 int err; 561 562 a0 = offset; 563 a1 = size; 564 565 err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); 566 567 switch (size) { 568 case 1: 569 *(u8 *)value = (u8)a0; 570 break; 571 case 2: 572 *(u16 *)value = (u16)a0; 573 break; 574 case 4: 575 *(u32 *)value = (u32)a0; 576 break; 577 case 8: 578 *(u64 *)value = a0; 579 break; 580 default: 581 BUG(); 582 break; 583 } 584 585 return err; 586} 587 588int vnic_dev_stats_clear(struct vnic_dev *vdev) 589{ 590 u64 a0 = 0, a1 = 0; 591 int wait = 1000; 592 return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait); 593} 594 595int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) 596{ 597 u64 a0, a1; 598 int wait = 1000; 599 600 if (!vdev->stats) { 601 vdev->stats = dma_alloc_coherent(&vdev->pdev->dev, 602 sizeof(struct vnic_stats), &vdev->stats_pa, GFP_KERNEL); 603 if (!vdev->stats) 604 return -ENOMEM; 605 } 606 607 *stats = vdev->stats; 608 a0 = vdev->stats_pa; 609 a1 = sizeof(struct vnic_stats); 610 611 return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); 612} 613 614int vnic_dev_close(struct vnic_dev *vdev) 615{ 616 u64 a0 = 0, a1 = 0; 617 int wait = 1000; 618 return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); 619} 620 621int vnic_dev_enable(struct vnic_dev *vdev) 622{ 623 u64 a0 = 0, a1 = 0; 624 int wait = 1000; 625 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); 626} 627 628int vnic_dev_disable(struct vnic_dev *vdev) 629{ 630 u64 a0 = 0, a1 = 0; 631 int wait = 1000; 632 return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); 633} 634 635int vnic_dev_open(struct vnic_dev *vdev, int arg) 636{ 637 u64 a0 = (u32)arg, a1 = 0; 638 int wait = 1000; 639 return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); 640} 641 642int vnic_dev_open_done(struct vnic_dev *vdev, int *done) 643{ 644 u64 a0 = 0, a1 = 0; 645 int wait = 1000; 646 int err; 647 648 *done = 0; 649 650 err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); 651 if (err) 652 return err; 653 654 *done = (a0 == 0); 655 656 return 0; 657} 658 659int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) 660{ 661 u64 a0 = (u32)arg, a1 = 0; 662 int wait = 1000; 663 return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); 664} 665 666int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) 667{ 668 u64 a0 = 0, a1 = 0; 669 int wait = 1000; 670 int err; 671 672 *done = 0; 673 674 err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); 675 if (err) 676 return err; 677 678 *done = (a0 == 0); 679 680 return 0; 681} 682 683int vnic_dev_hang_notify(struct vnic_dev *vdev) 684{ 685 u64 a0 = 0, a1 = 0; 686 int wait = 1000; 687 return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); 688} 689 690int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) 691{ 692 u64 a[2] = {}; 693 int wait = 1000; 694 int err, i; 695 696 for (i = 0; i < ETH_ALEN; i++) 697 mac_addr[i] = 0; 698 699 err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a[0], &a[1], wait); 700 if (err) 701 return err; 702 703 for (i = 0; i < ETH_ALEN; i++) 704 mac_addr[i] = ((u8 *)&a)[i]; 705 706 return 0; 707} 708 709void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, 710 int broadcast, int promisc, int allmulti) 711{ 712 u64 a0, a1 = 0; 713 int wait = 1000; 714 int err; 715 716 a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | 717 (multicast ? CMD_PFILTER_MULTICAST : 0) | 718 (broadcast ? CMD_PFILTER_BROADCAST : 0) | 719 (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | 720 (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); 721 722 err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); 723 if (err) 724 printk(KERN_ERR "Can't set packet filter\n"); 725} 726 727void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) 728{ 729 u64 a[2] = {}; 730 int wait = 1000; 731 int err; 732 int i; 733 734 for (i = 0; i < ETH_ALEN; i++) 735 ((u8 *)&a)[i] = addr[i]; 736 737 err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a[0], &a[1], wait); 738 if (err) 739 pr_err("Can't add addr [%pM], %d\n", addr, err); 740} 741 742void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) 743{ 744 u64 a[2] = {}; 745 int wait = 1000; 746 int err; 747 int i; 748 749 for (i = 0; i < ETH_ALEN; i++) 750 ((u8 *)&a)[i] = addr[i]; 751 752 err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a[0], &a[1], wait); 753 if (err) 754 pr_err("Can't del addr [%pM], %d\n", addr, err); 755} 756 757int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) 758{ 759 u64 a0, a1; 760 int wait = 1000; 761 762 if (!vdev->notify) { 763 vdev->notify = dma_alloc_coherent(&vdev->pdev->dev, 764 sizeof(struct vnic_devcmd_notify), 765 &vdev->notify_pa, GFP_KERNEL); 766 if (!vdev->notify) 767 return -ENOMEM; 768 } 769 770 a0 = vdev->notify_pa; 771 a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; 772 a1 += sizeof(struct vnic_devcmd_notify); 773 774 return vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); 775} 776 777void vnic_dev_notify_unset(struct vnic_dev *vdev) 778{ 779 u64 a0, a1; 780 int wait = 1000; 781 782 a0 = 0; /* paddr = 0 to unset notify buffer */ 783 a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ 784 a1 += sizeof(struct vnic_devcmd_notify); 785 786 vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); 787} 788 789static int vnic_dev_notify_ready(struct vnic_dev *vdev) 790{ 791 u32 *words; 792 unsigned int nwords = sizeof(struct vnic_devcmd_notify) / 4; 793 unsigned int i; 794 u32 csum; 795 796 if (!vdev->notify) 797 return 0; 798 799 do { 800 csum = 0; 801 memcpy(&vdev->notify_copy, vdev->notify, 802 sizeof(struct vnic_devcmd_notify)); 803 words = (u32 *)&vdev->notify_copy; 804 for (i = 1; i < nwords; i++) 805 csum += words[i]; 806 } while (csum != words[0]); 807 808 return 1; 809} 810 811int vnic_dev_init(struct vnic_dev *vdev, int arg) 812{ 813 u64 a0 = (u32)arg, a1 = 0; 814 int wait = 1000; 815 return vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); 816} 817 818u16 vnic_dev_set_default_vlan(struct vnic_dev *vdev, u16 new_default_vlan) 819{ 820 u64 a0 = new_default_vlan, a1 = 0; 821 int wait = 1000; 822 int old_vlan = 0; 823 824 old_vlan = vnic_dev_cmd(vdev, CMD_SET_DEFAULT_VLAN, &a0, &a1, wait); 825 return (u16)old_vlan; 826} 827 828int vnic_dev_link_status(struct vnic_dev *vdev) 829{ 830 if (vdev->linkstatus) 831 return *vdev->linkstatus; 832 833 if (!vnic_dev_notify_ready(vdev)) 834 return 0; 835 836 return vdev->notify_copy.link_state; 837} 838 839u32 vnic_dev_port_speed(struct vnic_dev *vdev) 840{ 841 if (!vnic_dev_notify_ready(vdev)) 842 return 0; 843 844 return vdev->notify_copy.port_speed; 845} 846 847u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) 848{ 849 if (!vnic_dev_notify_ready(vdev)) 850 return 0; 851 852 return vdev->notify_copy.msglvl; 853} 854 855u32 vnic_dev_mtu(struct vnic_dev *vdev) 856{ 857 if (!vnic_dev_notify_ready(vdev)) 858 return 0; 859 860 return vdev->notify_copy.mtu; 861} 862 863u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev) 864{ 865 if (!vnic_dev_notify_ready(vdev)) 866 return 0; 867 868 return vdev->notify_copy.link_down_cnt; 869} 870 871void vnic_dev_set_intr_mode(struct vnic_dev *vdev, 872 enum vnic_dev_intr_mode intr_mode) 873{ 874 vdev->intr_mode = intr_mode; 875} 876 877enum vnic_dev_intr_mode vnic_dev_get_intr_mode( 878 struct vnic_dev *vdev) 879{ 880 return vdev->intr_mode; 881} 882 883void vnic_dev_unregister(struct vnic_dev *vdev) 884{ 885 if (vdev) { 886 if (vdev->notify) 887 dma_free_coherent(&vdev->pdev->dev, 888 sizeof(struct vnic_devcmd_notify), 889 vdev->notify, 890 vdev->notify_pa); 891 if (vdev->linkstatus) 892 dma_free_coherent(&vdev->pdev->dev, 893 sizeof(u32), 894 vdev->linkstatus, 895 vdev->linkstatus_pa); 896 if (vdev->stats) 897 dma_free_coherent(&vdev->pdev->dev, 898 sizeof(struct vnic_stats), 899 vdev->stats, vdev->stats_pa); 900 if (vdev->fw_info) 901 dma_free_coherent(&vdev->pdev->dev, 902 sizeof(struct vnic_devcmd_fw_info), 903 vdev->fw_info, vdev->fw_info_pa); 904 if (vdev->devcmd2) 905 vnic_dev_deinit_devcmd2(vdev); 906 kfree(vdev); 907 } 908} 909 910struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, 911 void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar) 912{ 913 if (!vdev) { 914 vdev = kzalloc(sizeof(struct vnic_dev), GFP_KERNEL); 915 if (!vdev) 916 return NULL; 917 } 918 919 vdev->priv = priv; 920 vdev->pdev = pdev; 921 922 if (vnic_dev_discover_res(vdev, bar)) 923 goto err_out; 924 925 return vdev; 926 927err_out: 928 vnic_dev_unregister(vdev); 929 return NULL; 930} 931 932int vnic_dev_cmd_init(struct vnic_dev *vdev) 933{ 934 int err; 935 void *p; 936 937 p = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD2, 0); 938 if (p) { 939 pr_err("fnic: DEVCMD2 resource found!\n"); 940 err = vnic_dev_init_devcmd2(vdev); 941 } else { 942 pr_err("fnic: DEVCMD2 not found, fall back to Devcmd\n"); 943 err = vnic_dev_init_devcmd1(vdev); 944 } 945 946 return err; 947} 948