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_free_coherent(&ism->pdev->dev, dmb->dmb_len, 296 dmb->cpu_addr, dmb->dma_addr); 297 } 298 299 static int ism_alloc_dmb(struct ism_dev *ism, struct ism_dmb *dmb) 300 { 301 unsigned long bit; 302 303 if (PAGE_ALIGN(dmb->dmb_len) > dma_get_max_seg_size(&ism->pdev->dev)) 304 return -EINVAL; 305 306 if (!dmb->sba_idx) { 307 bit = find_next_zero_bit(ism->sba_bitmap, ISM_NR_DMBS, 308 ISM_DMB_BIT_OFFSET); 309 if (bit == ISM_NR_DMBS) 310 return -ENOSPC; 311 312 dmb->sba_idx = bit; 313 } 314 if (dmb->sba_idx < ISM_DMB_BIT_OFFSET || 315 test_and_set_bit(dmb->sba_idx, ism->sba_bitmap)) 316 return -EINVAL; 317 318 dmb->cpu_addr = dma_alloc_coherent(&ism->pdev->dev, dmb->dmb_len, 319 &dmb->dma_addr, 320 GFP_KERNEL | __GFP_NOWARN | 321 __GFP_NOMEMALLOC | __GFP_NORETRY); 322 if (!dmb->cpu_addr) 323 clear_bit(dmb->sba_idx, ism->sba_bitmap); 324 325 return dmb->cpu_addr ? 0 : -ENOMEM; 326 } 327 328 int ism_register_dmb(struct ism_dev *ism, struct ism_dmb *dmb, 329 struct ism_client *client) 330 { 331 union ism_reg_dmb cmd; 332 unsigned long flags; 333 int ret; 334 335 ret = ism_alloc_dmb(ism, dmb); 336 if (ret) 337 goto out; 338 339 memset(&cmd, 0, sizeof(cmd)); 340 cmd.request.hdr.cmd = ISM_REG_DMB; 341 cmd.request.hdr.len = sizeof(cmd.request); 342 343 cmd.request.dmb = dmb->dma_addr; 344 cmd.request.dmb_len = dmb->dmb_len; 345 cmd.request.sba_idx = dmb->sba_idx; 346 cmd.request.vlan_valid = dmb->vlan_valid; 347 cmd.request.vlan_id = dmb->vlan_id; 348 cmd.request.rgid = dmb->rgid; 349 350 ret = ism_cmd(ism, &cmd); 351 if (ret) { 352 ism_free_dmb(ism, dmb); 353 goto out; 354 } 355 dmb->dmb_tok = cmd.response.dmb_tok; 356 spin_lock_irqsave(&ism->lock, flags); 357 ism->sba_client_arr[dmb->sba_idx - ISM_DMB_BIT_OFFSET] = client->id; 358 spin_unlock_irqrestore(&ism->lock, flags); 359 out: 360 return ret; 361 } 362 EXPORT_SYMBOL_GPL(ism_register_dmb); 363 364 int ism_unregister_dmb(struct ism_dev *ism, struct ism_dmb *dmb) 365 { 366 union ism_unreg_dmb cmd; 367 unsigned long flags; 368 int ret; 369 370 memset(&cmd, 0, sizeof(cmd)); 371 cmd.request.hdr.cmd = ISM_UNREG_DMB; 372 cmd.request.hdr.len = sizeof(cmd.request); 373 374 cmd.request.dmb_tok = dmb->dmb_tok; 375 376 spin_lock_irqsave(&ism->lock, flags); 377 ism->sba_client_arr[dmb->sba_idx - ISM_DMB_BIT_OFFSET] = NO_CLIENT; 378 spin_unlock_irqrestore(&ism->lock, flags); 379 380 ret = ism_cmd(ism, &cmd); 381 if (ret && ret != ISM_ERROR) 382 goto out; 383 384 ism_free_dmb(ism, dmb); 385 out: 386 return ret; 387 } 388 EXPORT_SYMBOL_GPL(ism_unregister_dmb); 389 390 static int ism_add_vlan_id(struct ism_dev *ism, u64 vlan_id) 391 { 392 union ism_set_vlan_id cmd; 393 394 memset(&cmd, 0, sizeof(cmd)); 395 cmd.request.hdr.cmd = ISM_ADD_VLAN_ID; 396 cmd.request.hdr.len = sizeof(cmd.request); 397 398 cmd.request.vlan_id = vlan_id; 399 400 return ism_cmd(ism, &cmd); 401 } 402 403 static int ism_del_vlan_id(struct ism_dev *ism, u64 vlan_id) 404 { 405 union ism_set_vlan_id cmd; 406 407 memset(&cmd, 0, sizeof(cmd)); 408 cmd.request.hdr.cmd = ISM_DEL_VLAN_ID; 409 cmd.request.hdr.len = sizeof(cmd.request); 410 411 cmd.request.vlan_id = vlan_id; 412 413 return ism_cmd(ism, &cmd); 414 } 415 416 static unsigned int max_bytes(unsigned int start, unsigned int len, 417 unsigned int boundary) 418 { 419 return min(boundary - (start & (boundary - 1)), len); 420 } 421 422 int ism_move(struct ism_dev *ism, u64 dmb_tok, unsigned int idx, bool sf, 423 unsigned int offset, void *data, unsigned int size) 424 { 425 unsigned int bytes; 426 u64 dmb_req; 427 int ret; 428 429 while (size) { 430 bytes = max_bytes(offset, size, PAGE_SIZE); 431 dmb_req = ISM_CREATE_REQ(dmb_tok, idx, size == bytes ? sf : 0, 432 offset); 433 434 ret = __ism_move(ism, dmb_req, data, bytes); 435 if (ret) 436 return ret; 437 438 size -= bytes; 439 data += bytes; 440 offset += bytes; 441 } 442 443 return 0; 444 } 445 EXPORT_SYMBOL_GPL(ism_move); 446 447 static void ism_handle_event(struct ism_dev *ism) 448 { 449 struct ism_event *entry; 450 struct ism_client *clt; 451 int i; 452 453 while ((ism->ieq_idx + 1) != READ_ONCE(ism->ieq->header.idx)) { 454 if (++(ism->ieq_idx) == ARRAY_SIZE(ism->ieq->entry)) 455 ism->ieq_idx = 0; 456 457 entry = &ism->ieq->entry[ism->ieq_idx]; 458 debug_event(ism_debug_info, 2, entry, sizeof(*entry)); 459 for (i = 0; i < max_client; ++i) { 460 clt = ism->subs[i]; 461 if (clt) 462 clt->handle_event(ism, entry); 463 } 464 } 465 } 466 467 static irqreturn_t ism_handle_irq(int irq, void *data) 468 { 469 struct ism_dev *ism = data; 470 unsigned long bit, end; 471 unsigned long *bv; 472 u16 dmbemask; 473 u8 client_id; 474 475 bv = (void *) &ism->sba->dmb_bits[ISM_DMB_WORD_OFFSET]; 476 end = sizeof(ism->sba->dmb_bits) * BITS_PER_BYTE - ISM_DMB_BIT_OFFSET; 477 478 spin_lock(&ism->lock); 479 ism->sba->s = 0; 480 barrier(); 481 for (bit = 0;;) { 482 bit = find_next_bit_inv(bv, end, bit); 483 if (bit >= end) 484 break; 485 486 clear_bit_inv(bit, bv); 487 dmbemask = ism->sba->dmbe_mask[bit + ISM_DMB_BIT_OFFSET]; 488 ism->sba->dmbe_mask[bit + ISM_DMB_BIT_OFFSET] = 0; 489 barrier(); 490 client_id = ism->sba_client_arr[bit]; 491 if (unlikely(client_id == NO_CLIENT || !ism->subs[client_id])) 492 continue; 493 ism->subs[client_id]->handle_irq(ism, bit + ISM_DMB_BIT_OFFSET, dmbemask); 494 } 495 496 if (ism->sba->e) { 497 ism->sba->e = 0; 498 barrier(); 499 ism_handle_event(ism); 500 } 501 spin_unlock(&ism->lock); 502 return IRQ_HANDLED; 503 } 504 505 static int ism_dev_init(struct ism_dev *ism) 506 { 507 struct pci_dev *pdev = ism->pdev; 508 int i, ret; 509 510 ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI); 511 if (ret <= 0) 512 goto out; 513 514 ism->sba_client_arr = kzalloc(ISM_NR_DMBS, GFP_KERNEL); 515 if (!ism->sba_client_arr) 516 goto free_vectors; 517 memset(ism->sba_client_arr, NO_CLIENT, ISM_NR_DMBS); 518 519 ret = request_irq(pci_irq_vector(pdev, 0), ism_handle_irq, 0, 520 pci_name(pdev), ism); 521 if (ret) 522 goto free_client_arr; 523 524 ret = register_sba(ism); 525 if (ret) 526 goto free_irq; 527 528 ret = register_ieq(ism); 529 if (ret) 530 goto unreg_sba; 531 532 ret = ism_read_local_gid(ism); 533 if (ret) 534 goto unreg_ieq; 535 536 if (!ism_add_vlan_id(ism, ISM_RESERVED_VLANID)) 537 /* hardware is V2 capable */ 538 ism_v2_capable = true; 539 else 540 ism_v2_capable = false; 541 542 mutex_lock(&ism_dev_list.mutex); 543 mutex_lock(&clients_lock); 544 for (i = 0; i < max_client; ++i) { 545 if (clients[i]) { 546 clients[i]->add(ism); 547 ism_setup_forwarding(clients[i], ism); 548 } 549 } 550 mutex_unlock(&clients_lock); 551 552 list_add(&ism->list, &ism_dev_list.list); 553 mutex_unlock(&ism_dev_list.mutex); 554 555 query_info(ism); 556 return 0; 557 558 unreg_ieq: 559 unregister_ieq(ism); 560 unreg_sba: 561 unregister_sba(ism); 562 free_irq: 563 free_irq(pci_irq_vector(pdev, 0), ism); 564 free_client_arr: 565 kfree(ism->sba_client_arr); 566 free_vectors: 567 pci_free_irq_vectors(pdev); 568 out: 569 return ret; 570 } 571 572 static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id) 573 { 574 struct ism_dev *ism; 575 int ret; 576 577 ism = kzalloc(sizeof(*ism), GFP_KERNEL); 578 if (!ism) 579 return -ENOMEM; 580 581 spin_lock_init(&ism->lock); 582 dev_set_drvdata(&pdev->dev, ism); 583 ism->pdev = pdev; 584 ism->dev.parent = &pdev->dev; 585 device_initialize(&ism->dev); 586 dev_set_name(&ism->dev, dev_name(&pdev->dev)); 587 ret = device_add(&ism->dev); 588 if (ret) 589 goto err_dev; 590 591 ret = pci_enable_device_mem(pdev); 592 if (ret) 593 goto err; 594 595 ret = pci_request_mem_regions(pdev, DRV_NAME); 596 if (ret) 597 goto err_disable; 598 599 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 600 if (ret) 601 goto err_resource; 602 603 dma_set_seg_boundary(&pdev->dev, SZ_1M - 1); 604 dma_set_max_seg_size(&pdev->dev, SZ_1M); 605 pci_set_master(pdev); 606 607 ret = ism_dev_init(ism); 608 if (ret) 609 goto err_resource; 610 611 return 0; 612 613 err_resource: 614 pci_release_mem_regions(pdev); 615 err_disable: 616 pci_disable_device(pdev); 617 err: 618 device_del(&ism->dev); 619 err_dev: 620 dev_set_drvdata(&pdev->dev, NULL); 621 kfree(ism); 622 623 return ret; 624 } 625 626 static void ism_dev_exit(struct ism_dev *ism) 627 { 628 struct pci_dev *pdev = ism->pdev; 629 unsigned long flags; 630 int i; 631 632 spin_lock_irqsave(&ism->lock, flags); 633 for (i = 0; i < max_client; ++i) 634 ism->subs[i] = NULL; 635 spin_unlock_irqrestore(&ism->lock, flags); 636 637 mutex_lock(&ism_dev_list.mutex); 638 mutex_lock(&clients_lock); 639 for (i = 0; i < max_client; ++i) { 640 if (clients[i]) 641 clients[i]->remove(ism); 642 } 643 mutex_unlock(&clients_lock); 644 645 if (ism_v2_capable) 646 ism_del_vlan_id(ism, ISM_RESERVED_VLANID); 647 unregister_ieq(ism); 648 unregister_sba(ism); 649 free_irq(pci_irq_vector(pdev, 0), ism); 650 kfree(ism->sba_client_arr); 651 pci_free_irq_vectors(pdev); 652 list_del_init(&ism->list); 653 mutex_unlock(&ism_dev_list.mutex); 654 } 655 656 static void ism_remove(struct pci_dev *pdev) 657 { 658 struct ism_dev *ism = dev_get_drvdata(&pdev->dev); 659 660 ism_dev_exit(ism); 661 662 pci_release_mem_regions(pdev); 663 pci_disable_device(pdev); 664 device_del(&ism->dev); 665 dev_set_drvdata(&pdev->dev, NULL); 666 kfree(ism); 667 } 668 669 static struct pci_driver ism_driver = { 670 .name = DRV_NAME, 671 .id_table = ism_device_table, 672 .probe = ism_probe, 673 .remove = ism_remove, 674 }; 675 676 static int __init ism_init(void) 677 { 678 int ret; 679 680 ism_debug_info = debug_register("ism", 2, 1, 16); 681 if (!ism_debug_info) 682 return -ENODEV; 683 684 memset(clients, 0, sizeof(clients)); 685 max_client = 0; 686 debug_register_view(ism_debug_info, &debug_hex_ascii_view); 687 ret = pci_register_driver(&ism_driver); 688 if (ret) 689 debug_unregister(ism_debug_info); 690 691 return ret; 692 } 693 694 static void __exit ism_exit(void) 695 { 696 pci_unregister_driver(&ism_driver); 697 debug_unregister(ism_debug_info); 698 } 699 700 module_init(ism_init); 701 module_exit(ism_exit); 702 703 /*************************** SMC-D Implementation *****************************/ 704 705 #if IS_ENABLED(CONFIG_SMC) 706 static int ism_query_rgid(struct ism_dev *ism, u64 rgid, u32 vid_valid, 707 u32 vid) 708 { 709 union ism_query_rgid cmd; 710 711 memset(&cmd, 0, sizeof(cmd)); 712 cmd.request.hdr.cmd = ISM_QUERY_RGID; 713 cmd.request.hdr.len = sizeof(cmd.request); 714 715 cmd.request.rgid = rgid; 716 cmd.request.vlan_valid = vid_valid; 717 cmd.request.vlan_id = vid; 718 719 return ism_cmd(ism, &cmd); 720 } 721 722 static int smcd_query_rgid(struct smcd_dev *smcd, struct smcd_gid *rgid, 723 u32 vid_valid, u32 vid) 724 { 725 return ism_query_rgid(smcd->priv, rgid->gid, vid_valid, vid); 726 } 727 728 static int smcd_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb, 729 struct ism_client *client) 730 { 731 return ism_register_dmb(smcd->priv, (struct ism_dmb *)dmb, client); 732 } 733 734 static int smcd_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb) 735 { 736 return ism_unregister_dmb(smcd->priv, (struct ism_dmb *)dmb); 737 } 738 739 static int smcd_add_vlan_id(struct smcd_dev *smcd, u64 vlan_id) 740 { 741 return ism_add_vlan_id(smcd->priv, vlan_id); 742 } 743 744 static int smcd_del_vlan_id(struct smcd_dev *smcd, u64 vlan_id) 745 { 746 return ism_del_vlan_id(smcd->priv, vlan_id); 747 } 748 749 static int smcd_set_vlan_required(struct smcd_dev *smcd) 750 { 751 return ism_cmd_simple(smcd->priv, ISM_SET_VLAN); 752 } 753 754 static int smcd_reset_vlan_required(struct smcd_dev *smcd) 755 { 756 return ism_cmd_simple(smcd->priv, ISM_RESET_VLAN); 757 } 758 759 static int ism_signal_ieq(struct ism_dev *ism, u64 rgid, u32 trigger_irq, 760 u32 event_code, u64 info) 761 { 762 union ism_sig_ieq cmd; 763 764 memset(&cmd, 0, sizeof(cmd)); 765 cmd.request.hdr.cmd = ISM_SIGNAL_IEQ; 766 cmd.request.hdr.len = sizeof(cmd.request); 767 768 cmd.request.rgid = rgid; 769 cmd.request.trigger_irq = trigger_irq; 770 cmd.request.event_code = event_code; 771 cmd.request.info = info; 772 773 return ism_cmd(ism, &cmd); 774 } 775 776 static int smcd_signal_ieq(struct smcd_dev *smcd, struct smcd_gid *rgid, 777 u32 trigger_irq, u32 event_code, u64 info) 778 { 779 return ism_signal_ieq(smcd->priv, rgid->gid, 780 trigger_irq, event_code, info); 781 } 782 783 static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx, 784 bool sf, unsigned int offset, void *data, 785 unsigned int size) 786 { 787 return ism_move(smcd->priv, dmb_tok, idx, sf, offset, data, size); 788 } 789 790 static int smcd_supports_v2(void) 791 { 792 return ism_v2_capable; 793 } 794 795 static u64 ism_get_local_gid(struct ism_dev *ism) 796 { 797 return ism->local_gid; 798 } 799 800 static void smcd_get_local_gid(struct smcd_dev *smcd, 801 struct smcd_gid *smcd_gid) 802 { 803 smcd_gid->gid = ism_get_local_gid(smcd->priv); 804 smcd_gid->gid_ext = 0; 805 } 806 807 static u16 ism_get_chid(struct ism_dev *ism) 808 { 809 if (!ism || !ism->pdev) 810 return 0; 811 812 return to_zpci(ism->pdev)->pchid; 813 } 814 815 static u16 smcd_get_chid(struct smcd_dev *smcd) 816 { 817 return ism_get_chid(smcd->priv); 818 } 819 820 static inline struct device *smcd_get_dev(struct smcd_dev *dev) 821 { 822 struct ism_dev *ism = dev->priv; 823 824 return &ism->dev; 825 } 826 827 static const struct smcd_ops ism_ops = { 828 .query_remote_gid = smcd_query_rgid, 829 .register_dmb = smcd_register_dmb, 830 .unregister_dmb = smcd_unregister_dmb, 831 .add_vlan_id = smcd_add_vlan_id, 832 .del_vlan_id = smcd_del_vlan_id, 833 .set_vlan_required = smcd_set_vlan_required, 834 .reset_vlan_required = smcd_reset_vlan_required, 835 .signal_event = smcd_signal_ieq, 836 .move_data = smcd_move, 837 .supports_v2 = smcd_supports_v2, 838 .get_local_gid = smcd_get_local_gid, 839 .get_chid = smcd_get_chid, 840 .get_dev = smcd_get_dev, 841 }; 842 843 const struct smcd_ops *ism_get_smcd_ops(void) 844 { 845 return &ism_ops; 846 } 847 EXPORT_SYMBOL_GPL(ism_get_smcd_ops); 848 #endif 849