1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * ISM driver for s390. 4 * 5 * Copyright IBM Corp. 2018 6 */ 7 #define KMSG_COMPONENT "ism" 8 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 9 10 #include <linux/module.h> 11 #include <linux/types.h> 12 #include <linux/interrupt.h> 13 #include <linux/device.h> 14 #include <linux/err.h> 15 #include <linux/ctype.h> 16 #include <linux/processor.h> 17 18 #include "ism.h" 19 20 MODULE_DESCRIPTION("ISM driver for s390"); 21 MODULE_LICENSE("GPL"); 22 23 #define PCI_DEVICE_ID_IBM_ISM 0x04ED 24 #define DRV_NAME "ism" 25 26 static const struct pci_device_id ism_device_table[] = { 27 { PCI_VDEVICE(IBM, PCI_DEVICE_ID_IBM_ISM), 0 }, 28 { 0, } 29 }; 30 MODULE_DEVICE_TABLE(pci, ism_device_table); 31 32 static debug_info_t *ism_debug_info; 33 34 #define NO_CLIENT 0xff /* must be >= MAX_CLIENTS */ 35 static struct ism_client *clients[MAX_CLIENTS]; /* use an array rather than */ 36 /* a list for fast mapping */ 37 static u8 max_client; 38 static DEFINE_MUTEX(clients_lock); 39 static bool ism_v2_capable; 40 struct ism_dev_list { 41 struct list_head list; 42 struct mutex mutex; /* protects ism device list */ 43 }; 44 45 static struct ism_dev_list ism_dev_list = { 46 .list = LIST_HEAD_INIT(ism_dev_list.list), 47 .mutex = __MUTEX_INITIALIZER(ism_dev_list.mutex), 48 }; 49 50 static void ism_setup_forwarding(struct ism_client *client, struct ism_dev *ism) 51 { 52 unsigned long flags; 53 54 spin_lock_irqsave(&ism->lock, flags); 55 ism->subs[client->id] = client; 56 spin_unlock_irqrestore(&ism->lock, flags); 57 } 58 59 int ism_register_client(struct ism_client *client) 60 { 61 struct ism_dev *ism; 62 int i, rc = -ENOSPC; 63 64 mutex_lock(&ism_dev_list.mutex); 65 mutex_lock(&clients_lock); 66 for (i = 0; i < MAX_CLIENTS; ++i) { 67 if (!clients[i]) { 68 clients[i] = client; 69 client->id = i; 70 if (i == max_client) 71 max_client++; 72 rc = 0; 73 break; 74 } 75 } 76 mutex_unlock(&clients_lock); 77 78 if (i < MAX_CLIENTS) { 79 /* initialize with all devices that we got so far */ 80 list_for_each_entry(ism, &ism_dev_list.list, list) { 81 ism->priv[i] = NULL; 82 client->add(ism); 83 ism_setup_forwarding(client, ism); 84 } 85 } 86 mutex_unlock(&ism_dev_list.mutex); 87 88 return rc; 89 } 90 EXPORT_SYMBOL_GPL(ism_register_client); 91 92 int ism_unregister_client(struct ism_client *client) 93 { 94 struct ism_dev *ism; 95 unsigned long flags; 96 int rc = 0; 97 98 mutex_lock(&ism_dev_list.mutex); 99 list_for_each_entry(ism, &ism_dev_list.list, list) { 100 spin_lock_irqsave(&ism->lock, flags); 101 /* Stop forwarding IRQs and events */ 102 ism->subs[client->id] = NULL; 103 for (int i = 0; i < ISM_NR_DMBS; ++i) { 104 if (ism->sba_client_arr[i] == client->id) { 105 WARN(1, "%s: attempt to unregister '%s' with registered dmb(s)\n", 106 __func__, client->name); 107 rc = -EBUSY; 108 goto err_reg_dmb; 109 } 110 } 111 spin_unlock_irqrestore(&ism->lock, flags); 112 } 113 mutex_unlock(&ism_dev_list.mutex); 114 115 mutex_lock(&clients_lock); 116 clients[client->id] = NULL; 117 if (client->id + 1 == max_client) 118 max_client--; 119 mutex_unlock(&clients_lock); 120 return rc; 121 122 err_reg_dmb: 123 spin_unlock_irqrestore(&ism->lock, flags); 124 mutex_unlock(&ism_dev_list.mutex); 125 return rc; 126 } 127 EXPORT_SYMBOL_GPL(ism_unregister_client); 128 129 static int ism_cmd(struct ism_dev *ism, void *cmd) 130 { 131 struct ism_req_hdr *req = cmd; 132 struct ism_resp_hdr *resp = cmd; 133 134 __ism_write_cmd(ism, req + 1, sizeof(*req), req->len - sizeof(*req)); 135 __ism_write_cmd(ism, req, 0, sizeof(*req)); 136 137 WRITE_ONCE(resp->ret, ISM_ERROR); 138 139 __ism_read_cmd(ism, resp, 0, sizeof(*resp)); 140 if (resp->ret) { 141 debug_text_event(ism_debug_info, 0, "cmd failure"); 142 debug_event(ism_debug_info, 0, resp, sizeof(*resp)); 143 goto out; 144 } 145 __ism_read_cmd(ism, resp + 1, sizeof(*resp), resp->len - sizeof(*resp)); 146 out: 147 return resp->ret; 148 } 149 150 static int ism_cmd_simple(struct ism_dev *ism, u32 cmd_code) 151 { 152 union ism_cmd_simple cmd; 153 154 memset(&cmd, 0, sizeof(cmd)); 155 cmd.request.hdr.cmd = cmd_code; 156 cmd.request.hdr.len = sizeof(cmd.request); 157 158 return ism_cmd(ism, &cmd); 159 } 160 161 static int query_info(struct ism_dev *ism) 162 { 163 union ism_qi cmd; 164 165 memset(&cmd, 0, sizeof(cmd)); 166 cmd.request.hdr.cmd = ISM_QUERY_INFO; 167 cmd.request.hdr.len = sizeof(cmd.request); 168 169 if (ism_cmd(ism, &cmd)) 170 goto out; 171 172 debug_text_event(ism_debug_info, 3, "query info"); 173 debug_event(ism_debug_info, 3, &cmd.response, sizeof(cmd.response)); 174 out: 175 return 0; 176 } 177 178 static int register_sba(struct ism_dev *ism) 179 { 180 union ism_reg_sba cmd; 181 dma_addr_t dma_handle; 182 struct ism_sba *sba; 183 184 sba = dma_alloc_coherent(&ism->pdev->dev, PAGE_SIZE, &dma_handle, 185 GFP_KERNEL); 186 if (!sba) 187 return -ENOMEM; 188 189 memset(&cmd, 0, sizeof(cmd)); 190 cmd.request.hdr.cmd = ISM_REG_SBA; 191 cmd.request.hdr.len = sizeof(cmd.request); 192 cmd.request.sba = dma_handle; 193 194 if (ism_cmd(ism, &cmd)) { 195 dma_free_coherent(&ism->pdev->dev, PAGE_SIZE, sba, dma_handle); 196 return -EIO; 197 } 198 199 ism->sba = sba; 200 ism->sba_dma_addr = dma_handle; 201 202 return 0; 203 } 204 205 static int register_ieq(struct ism_dev *ism) 206 { 207 union ism_reg_ieq cmd; 208 dma_addr_t dma_handle; 209 struct ism_eq *ieq; 210 211 ieq = dma_alloc_coherent(&ism->pdev->dev, PAGE_SIZE, &dma_handle, 212 GFP_KERNEL); 213 if (!ieq) 214 return -ENOMEM; 215 216 memset(&cmd, 0, sizeof(cmd)); 217 cmd.request.hdr.cmd = ISM_REG_IEQ; 218 cmd.request.hdr.len = sizeof(cmd.request); 219 cmd.request.ieq = dma_handle; 220 cmd.request.len = sizeof(*ieq); 221 222 if (ism_cmd(ism, &cmd)) { 223 dma_free_coherent(&ism->pdev->dev, PAGE_SIZE, ieq, dma_handle); 224 return -EIO; 225 } 226 227 ism->ieq = ieq; 228 ism->ieq_idx = -1; 229 ism->ieq_dma_addr = dma_handle; 230 231 return 0; 232 } 233 234 static int unregister_sba(struct ism_dev *ism) 235 { 236 int ret; 237 238 if (!ism->sba) 239 return 0; 240 241 ret = ism_cmd_simple(ism, ISM_UNREG_SBA); 242 if (ret && ret != ISM_ERROR) 243 return -EIO; 244 245 dma_free_coherent(&ism->pdev->dev, PAGE_SIZE, 246 ism->sba, ism->sba_dma_addr); 247 248 ism->sba = NULL; 249 ism->sba_dma_addr = 0; 250 251 return 0; 252 } 253 254 static int unregister_ieq(struct ism_dev *ism) 255 { 256 int ret; 257 258 if (!ism->ieq) 259 return 0; 260 261 ret = ism_cmd_simple(ism, ISM_UNREG_IEQ); 262 if (ret && ret != ISM_ERROR) 263 return -EIO; 264 265 dma_free_coherent(&ism->pdev->dev, PAGE_SIZE, 266 ism->ieq, ism->ieq_dma_addr); 267 268 ism->ieq = NULL; 269 ism->ieq_dma_addr = 0; 270 271 return 0; 272 } 273 274 static int ism_read_local_gid(struct ism_dev *ism) 275 { 276 union ism_read_gid cmd; 277 int ret; 278 279 memset(&cmd, 0, sizeof(cmd)); 280 cmd.request.hdr.cmd = ISM_READ_GID; 281 cmd.request.hdr.len = sizeof(cmd.request); 282 283 ret = ism_cmd(ism, &cmd); 284 if (ret) 285 goto out; 286 287 ism->local_gid = cmd.response.gid; 288 out: 289 return ret; 290 } 291 292 static void ism_free_dmb(struct ism_dev *ism, struct ism_dmb *dmb) 293 { 294 clear_bit(dmb->sba_idx, ism->sba_bitmap); 295 dma_unmap_page(&ism->pdev->dev, dmb->dma_addr, dmb->dmb_len, 296 DMA_FROM_DEVICE); 297 folio_put(virt_to_folio(dmb->cpu_addr)); 298 } 299 300 static int ism_alloc_dmb(struct ism_dev *ism, struct ism_dmb *dmb) 301 { 302 struct folio *folio; 303 unsigned long bit; 304 int rc; 305 306 if (PAGE_ALIGN(dmb->dmb_len) > dma_get_max_seg_size(&ism->pdev->dev)) 307 return -EINVAL; 308 309 if (!dmb->sba_idx) { 310 bit = find_next_zero_bit(ism->sba_bitmap, ISM_NR_DMBS, 311 ISM_DMB_BIT_OFFSET); 312 if (bit == ISM_NR_DMBS) 313 return -ENOSPC; 314 315 dmb->sba_idx = bit; 316 } 317 if (dmb->sba_idx < ISM_DMB_BIT_OFFSET || 318 test_and_set_bit(dmb->sba_idx, ism->sba_bitmap)) 319 return -EINVAL; 320 321 folio = folio_alloc(GFP_KERNEL | __GFP_NOWARN | __GFP_NOMEMALLOC | 322 __GFP_NORETRY, get_order(dmb->dmb_len)); 323 324 if (!folio) { 325 rc = -ENOMEM; 326 goto out_bit; 327 } 328 329 dmb->cpu_addr = folio_address(folio); 330 dmb->dma_addr = dma_map_page(&ism->pdev->dev, 331 virt_to_page(dmb->cpu_addr), 0, 332 dmb->dmb_len, DMA_FROM_DEVICE); 333 if (dma_mapping_error(&ism->pdev->dev, dmb->dma_addr)) { 334 rc = -ENOMEM; 335 goto out_free; 336 } 337 338 return 0; 339 340 out_free: 341 kfree(dmb->cpu_addr); 342 out_bit: 343 clear_bit(dmb->sba_idx, ism->sba_bitmap); 344 return rc; 345 } 346 347 int ism_register_dmb(struct ism_dev *ism, struct ism_dmb *dmb, 348 struct ism_client *client) 349 { 350 union ism_reg_dmb cmd; 351 unsigned long flags; 352 int ret; 353 354 ret = ism_alloc_dmb(ism, dmb); 355 if (ret) 356 goto out; 357 358 memset(&cmd, 0, sizeof(cmd)); 359 cmd.request.hdr.cmd = ISM_REG_DMB; 360 cmd.request.hdr.len = sizeof(cmd.request); 361 362 cmd.request.dmb = dmb->dma_addr; 363 cmd.request.dmb_len = dmb->dmb_len; 364 cmd.request.sba_idx = dmb->sba_idx; 365 cmd.request.vlan_valid = dmb->vlan_valid; 366 cmd.request.vlan_id = dmb->vlan_id; 367 cmd.request.rgid = dmb->rgid; 368 369 ret = ism_cmd(ism, &cmd); 370 if (ret) { 371 ism_free_dmb(ism, dmb); 372 goto out; 373 } 374 dmb->dmb_tok = cmd.response.dmb_tok; 375 spin_lock_irqsave(&ism->lock, flags); 376 ism->sba_client_arr[dmb->sba_idx - ISM_DMB_BIT_OFFSET] = client->id; 377 spin_unlock_irqrestore(&ism->lock, flags); 378 out: 379 return ret; 380 } 381 EXPORT_SYMBOL_GPL(ism_register_dmb); 382 383 int ism_unregister_dmb(struct ism_dev *ism, struct ism_dmb *dmb) 384 { 385 union ism_unreg_dmb cmd; 386 unsigned long flags; 387 int ret; 388 389 memset(&cmd, 0, sizeof(cmd)); 390 cmd.request.hdr.cmd = ISM_UNREG_DMB; 391 cmd.request.hdr.len = sizeof(cmd.request); 392 393 cmd.request.dmb_tok = dmb->dmb_tok; 394 395 spin_lock_irqsave(&ism->lock, flags); 396 ism->sba_client_arr[dmb->sba_idx - ISM_DMB_BIT_OFFSET] = NO_CLIENT; 397 spin_unlock_irqrestore(&ism->lock, flags); 398 399 ret = ism_cmd(ism, &cmd); 400 if (ret && ret != ISM_ERROR) 401 goto out; 402 403 ism_free_dmb(ism, dmb); 404 out: 405 return ret; 406 } 407 EXPORT_SYMBOL_GPL(ism_unregister_dmb); 408 409 static int ism_add_vlan_id(struct ism_dev *ism, u64 vlan_id) 410 { 411 union ism_set_vlan_id cmd; 412 413 memset(&cmd, 0, sizeof(cmd)); 414 cmd.request.hdr.cmd = ISM_ADD_VLAN_ID; 415 cmd.request.hdr.len = sizeof(cmd.request); 416 417 cmd.request.vlan_id = vlan_id; 418 419 return ism_cmd(ism, &cmd); 420 } 421 422 static int ism_del_vlan_id(struct ism_dev *ism, u64 vlan_id) 423 { 424 union ism_set_vlan_id cmd; 425 426 memset(&cmd, 0, sizeof(cmd)); 427 cmd.request.hdr.cmd = ISM_DEL_VLAN_ID; 428 cmd.request.hdr.len = sizeof(cmd.request); 429 430 cmd.request.vlan_id = vlan_id; 431 432 return ism_cmd(ism, &cmd); 433 } 434 435 static unsigned int max_bytes(unsigned int start, unsigned int len, 436 unsigned int boundary) 437 { 438 return min(boundary - (start & (boundary - 1)), len); 439 } 440 441 int ism_move(struct ism_dev *ism, u64 dmb_tok, unsigned int idx, bool sf, 442 unsigned int offset, void *data, unsigned int size) 443 { 444 unsigned int bytes; 445 u64 dmb_req; 446 int ret; 447 448 while (size) { 449 bytes = max_bytes(offset, size, PAGE_SIZE); 450 dmb_req = ISM_CREATE_REQ(dmb_tok, idx, size == bytes ? sf : 0, 451 offset); 452 453 ret = __ism_move(ism, dmb_req, data, bytes); 454 if (ret) 455 return ret; 456 457 size -= bytes; 458 data += bytes; 459 offset += bytes; 460 } 461 462 return 0; 463 } 464 EXPORT_SYMBOL_GPL(ism_move); 465 466 static void ism_handle_event(struct ism_dev *ism) 467 { 468 struct ism_event *entry; 469 struct ism_client *clt; 470 int i; 471 472 while ((ism->ieq_idx + 1) != READ_ONCE(ism->ieq->header.idx)) { 473 if (++(ism->ieq_idx) == ARRAY_SIZE(ism->ieq->entry)) 474 ism->ieq_idx = 0; 475 476 entry = &ism->ieq->entry[ism->ieq_idx]; 477 debug_event(ism_debug_info, 2, entry, sizeof(*entry)); 478 for (i = 0; i < max_client; ++i) { 479 clt = ism->subs[i]; 480 if (clt) 481 clt->handle_event(ism, entry); 482 } 483 } 484 } 485 486 static irqreturn_t ism_handle_irq(int irq, void *data) 487 { 488 struct ism_dev *ism = data; 489 unsigned long bit, end; 490 unsigned long *bv; 491 u16 dmbemask; 492 u8 client_id; 493 494 bv = (void *) &ism->sba->dmb_bits[ISM_DMB_WORD_OFFSET]; 495 end = sizeof(ism->sba->dmb_bits) * BITS_PER_BYTE - ISM_DMB_BIT_OFFSET; 496 497 spin_lock(&ism->lock); 498 ism->sba->s = 0; 499 barrier(); 500 for (bit = 0;;) { 501 bit = find_next_bit_inv(bv, end, bit); 502 if (bit >= end) 503 break; 504 505 clear_bit_inv(bit, bv); 506 dmbemask = ism->sba->dmbe_mask[bit + ISM_DMB_BIT_OFFSET]; 507 ism->sba->dmbe_mask[bit + ISM_DMB_BIT_OFFSET] = 0; 508 barrier(); 509 client_id = ism->sba_client_arr[bit]; 510 if (unlikely(client_id == NO_CLIENT || !ism->subs[client_id])) 511 continue; 512 ism->subs[client_id]->handle_irq(ism, bit + ISM_DMB_BIT_OFFSET, dmbemask); 513 } 514 515 if (ism->sba->e) { 516 ism->sba->e = 0; 517 barrier(); 518 ism_handle_event(ism); 519 } 520 spin_unlock(&ism->lock); 521 return IRQ_HANDLED; 522 } 523 524 static int ism_dev_init(struct ism_dev *ism) 525 { 526 struct pci_dev *pdev = ism->pdev; 527 int i, ret; 528 529 ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI); 530 if (ret <= 0) 531 goto out; 532 533 ism->sba_client_arr = kzalloc(ISM_NR_DMBS, GFP_KERNEL); 534 if (!ism->sba_client_arr) 535 goto free_vectors; 536 memset(ism->sba_client_arr, NO_CLIENT, ISM_NR_DMBS); 537 538 ret = request_irq(pci_irq_vector(pdev, 0), ism_handle_irq, 0, 539 pci_name(pdev), ism); 540 if (ret) 541 goto free_client_arr; 542 543 ret = register_sba(ism); 544 if (ret) 545 goto free_irq; 546 547 ret = register_ieq(ism); 548 if (ret) 549 goto unreg_sba; 550 551 ret = ism_read_local_gid(ism); 552 if (ret) 553 goto unreg_ieq; 554 555 if (!ism_add_vlan_id(ism, ISM_RESERVED_VLANID)) 556 /* hardware is V2 capable */ 557 ism_v2_capable = true; 558 else 559 ism_v2_capable = false; 560 561 mutex_lock(&ism_dev_list.mutex); 562 mutex_lock(&clients_lock); 563 for (i = 0; i < max_client; ++i) { 564 if (clients[i]) { 565 clients[i]->add(ism); 566 ism_setup_forwarding(clients[i], ism); 567 } 568 } 569 mutex_unlock(&clients_lock); 570 571 list_add(&ism->list, &ism_dev_list.list); 572 mutex_unlock(&ism_dev_list.mutex); 573 574 query_info(ism); 575 return 0; 576 577 unreg_ieq: 578 unregister_ieq(ism); 579 unreg_sba: 580 unregister_sba(ism); 581 free_irq: 582 free_irq(pci_irq_vector(pdev, 0), ism); 583 free_client_arr: 584 kfree(ism->sba_client_arr); 585 free_vectors: 586 pci_free_irq_vectors(pdev); 587 out: 588 return ret; 589 } 590 591 static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id) 592 { 593 struct ism_dev *ism; 594 int ret; 595 596 ism = kzalloc(sizeof(*ism), GFP_KERNEL); 597 if (!ism) 598 return -ENOMEM; 599 600 spin_lock_init(&ism->lock); 601 dev_set_drvdata(&pdev->dev, ism); 602 ism->pdev = pdev; 603 ism->dev.parent = &pdev->dev; 604 device_initialize(&ism->dev); 605 dev_set_name(&ism->dev, dev_name(&pdev->dev)); 606 ret = device_add(&ism->dev); 607 if (ret) 608 goto err_dev; 609 610 ret = pci_enable_device_mem(pdev); 611 if (ret) 612 goto err; 613 614 ret = pci_request_mem_regions(pdev, DRV_NAME); 615 if (ret) 616 goto err_disable; 617 618 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 619 if (ret) 620 goto err_resource; 621 622 dma_set_seg_boundary(&pdev->dev, SZ_1M - 1); 623 dma_set_max_seg_size(&pdev->dev, SZ_1M); 624 pci_set_master(pdev); 625 626 ret = ism_dev_init(ism); 627 if (ret) 628 goto err_resource; 629 630 return 0; 631 632 err_resource: 633 pci_release_mem_regions(pdev); 634 err_disable: 635 pci_disable_device(pdev); 636 err: 637 device_del(&ism->dev); 638 err_dev: 639 dev_set_drvdata(&pdev->dev, NULL); 640 kfree(ism); 641 642 return ret; 643 } 644 645 static void ism_dev_exit(struct ism_dev *ism) 646 { 647 struct pci_dev *pdev = ism->pdev; 648 unsigned long flags; 649 int i; 650 651 spin_lock_irqsave(&ism->lock, flags); 652 for (i = 0; i < max_client; ++i) 653 ism->subs[i] = NULL; 654 spin_unlock_irqrestore(&ism->lock, flags); 655 656 mutex_lock(&ism_dev_list.mutex); 657 mutex_lock(&clients_lock); 658 for (i = 0; i < max_client; ++i) { 659 if (clients[i]) 660 clients[i]->remove(ism); 661 } 662 mutex_unlock(&clients_lock); 663 664 if (ism_v2_capable) 665 ism_del_vlan_id(ism, ISM_RESERVED_VLANID); 666 unregister_ieq(ism); 667 unregister_sba(ism); 668 free_irq(pci_irq_vector(pdev, 0), ism); 669 kfree(ism->sba_client_arr); 670 pci_free_irq_vectors(pdev); 671 list_del_init(&ism->list); 672 mutex_unlock(&ism_dev_list.mutex); 673 } 674 675 static void ism_remove(struct pci_dev *pdev) 676 { 677 struct ism_dev *ism = dev_get_drvdata(&pdev->dev); 678 679 ism_dev_exit(ism); 680 681 pci_release_mem_regions(pdev); 682 pci_disable_device(pdev); 683 device_del(&ism->dev); 684 dev_set_drvdata(&pdev->dev, NULL); 685 kfree(ism); 686 } 687 688 static struct pci_driver ism_driver = { 689 .name = DRV_NAME, 690 .id_table = ism_device_table, 691 .probe = ism_probe, 692 .remove = ism_remove, 693 }; 694 695 static int __init ism_init(void) 696 { 697 int ret; 698 699 ism_debug_info = debug_register("ism", 2, 1, 16); 700 if (!ism_debug_info) 701 return -ENODEV; 702 703 memset(clients, 0, sizeof(clients)); 704 max_client = 0; 705 debug_register_view(ism_debug_info, &debug_hex_ascii_view); 706 ret = pci_register_driver(&ism_driver); 707 if (ret) 708 debug_unregister(ism_debug_info); 709 710 return ret; 711 } 712 713 static void __exit ism_exit(void) 714 { 715 pci_unregister_driver(&ism_driver); 716 debug_unregister(ism_debug_info); 717 } 718 719 module_init(ism_init); 720 module_exit(ism_exit); 721 722 /*************************** SMC-D Implementation *****************************/ 723 724 #if IS_ENABLED(CONFIG_SMC) 725 static int ism_query_rgid(struct ism_dev *ism, u64 rgid, u32 vid_valid, 726 u32 vid) 727 { 728 union ism_query_rgid cmd; 729 730 memset(&cmd, 0, sizeof(cmd)); 731 cmd.request.hdr.cmd = ISM_QUERY_RGID; 732 cmd.request.hdr.len = sizeof(cmd.request); 733 734 cmd.request.rgid = rgid; 735 cmd.request.vlan_valid = vid_valid; 736 cmd.request.vlan_id = vid; 737 738 return ism_cmd(ism, &cmd); 739 } 740 741 static int smcd_query_rgid(struct smcd_dev *smcd, struct smcd_gid *rgid, 742 u32 vid_valid, u32 vid) 743 { 744 return ism_query_rgid(smcd->priv, rgid->gid, vid_valid, vid); 745 } 746 747 static int smcd_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb, 748 void *client) 749 { 750 return ism_register_dmb(smcd->priv, (struct ism_dmb *)dmb, client); 751 } 752 753 static int smcd_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb) 754 { 755 return ism_unregister_dmb(smcd->priv, (struct ism_dmb *)dmb); 756 } 757 758 static int smcd_add_vlan_id(struct smcd_dev *smcd, u64 vlan_id) 759 { 760 return ism_add_vlan_id(smcd->priv, vlan_id); 761 } 762 763 static int smcd_del_vlan_id(struct smcd_dev *smcd, u64 vlan_id) 764 { 765 return ism_del_vlan_id(smcd->priv, vlan_id); 766 } 767 768 static int smcd_set_vlan_required(struct smcd_dev *smcd) 769 { 770 return ism_cmd_simple(smcd->priv, ISM_SET_VLAN); 771 } 772 773 static int smcd_reset_vlan_required(struct smcd_dev *smcd) 774 { 775 return ism_cmd_simple(smcd->priv, ISM_RESET_VLAN); 776 } 777 778 static int ism_signal_ieq(struct ism_dev *ism, u64 rgid, u32 trigger_irq, 779 u32 event_code, u64 info) 780 { 781 union ism_sig_ieq cmd; 782 783 memset(&cmd, 0, sizeof(cmd)); 784 cmd.request.hdr.cmd = ISM_SIGNAL_IEQ; 785 cmd.request.hdr.len = sizeof(cmd.request); 786 787 cmd.request.rgid = rgid; 788 cmd.request.trigger_irq = trigger_irq; 789 cmd.request.event_code = event_code; 790 cmd.request.info = info; 791 792 return ism_cmd(ism, &cmd); 793 } 794 795 static int smcd_signal_ieq(struct smcd_dev *smcd, struct smcd_gid *rgid, 796 u32 trigger_irq, u32 event_code, u64 info) 797 { 798 return ism_signal_ieq(smcd->priv, rgid->gid, 799 trigger_irq, event_code, info); 800 } 801 802 static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx, 803 bool sf, unsigned int offset, void *data, 804 unsigned int size) 805 { 806 return ism_move(smcd->priv, dmb_tok, idx, sf, offset, data, size); 807 } 808 809 static int smcd_supports_v2(void) 810 { 811 return ism_v2_capable; 812 } 813 814 static u64 ism_get_local_gid(struct ism_dev *ism) 815 { 816 return ism->local_gid; 817 } 818 819 static void smcd_get_local_gid(struct smcd_dev *smcd, 820 struct smcd_gid *smcd_gid) 821 { 822 smcd_gid->gid = ism_get_local_gid(smcd->priv); 823 smcd_gid->gid_ext = 0; 824 } 825 826 static u16 ism_get_chid(struct ism_dev *ism) 827 { 828 if (!ism || !ism->pdev) 829 return 0; 830 831 return to_zpci(ism->pdev)->pchid; 832 } 833 834 static u16 smcd_get_chid(struct smcd_dev *smcd) 835 { 836 return ism_get_chid(smcd->priv); 837 } 838 839 static inline struct device *smcd_get_dev(struct smcd_dev *dev) 840 { 841 struct ism_dev *ism = dev->priv; 842 843 return &ism->dev; 844 } 845 846 static const struct smcd_ops ism_ops = { 847 .query_remote_gid = smcd_query_rgid, 848 .register_dmb = smcd_register_dmb, 849 .unregister_dmb = smcd_unregister_dmb, 850 .add_vlan_id = smcd_add_vlan_id, 851 .del_vlan_id = smcd_del_vlan_id, 852 .set_vlan_required = smcd_set_vlan_required, 853 .reset_vlan_required = smcd_reset_vlan_required, 854 .signal_event = smcd_signal_ieq, 855 .move_data = smcd_move, 856 .supports_v2 = smcd_supports_v2, 857 .get_local_gid = smcd_get_local_gid, 858 .get_chid = smcd_get_chid, 859 .get_dev = smcd_get_dev, 860 }; 861 862 const struct smcd_ops *ism_get_smcd_ops(void) 863 { 864 return &ism_ops; 865 } 866 EXPORT_SYMBOL_GPL(ism_get_smcd_ops); 867 #endif 868