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1// SPDX-License-Identifier: GPL-2.02/*3 * ISM driver for s390.4 *5 * Copyright IBM Corp. 20186 */7#define KMSG_COMPONENT "ism"8#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt9 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 20MODULE_DESCRIPTION("ISM driver for s390");21MODULE_LICENSE("GPL");22 23#define PCI_DEVICE_ID_IBM_ISM 0x04ED24#define DRV_NAME "ism"25 26static const struct pci_device_id ism_device_table[] = {27 { PCI_VDEVICE(IBM, PCI_DEVICE_ID_IBM_ISM), 0 },28 { 0, }29};30MODULE_DEVICE_TABLE(pci, ism_device_table);31 32static debug_info_t *ism_debug_info;33 34#define NO_CLIENT 0xff /* must be >= MAX_CLIENTS */35static struct ism_client *clients[MAX_CLIENTS]; /* use an array rather than */36 /* a list for fast mapping */37static u8 max_client;38static DEFINE_MUTEX(clients_lock);39static bool ism_v2_capable;40struct ism_dev_list {41 struct list_head list;42 struct mutex mutex; /* protects ism device list */43};44 45static 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 50static 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 59int 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}90EXPORT_SYMBOL_GPL(ism_register_client);91 92int 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 122err_reg_dmb:123 spin_unlock_irqrestore(&ism->lock, flags);124 mutex_unlock(&ism_dev_list.mutex);125 return rc;126}127EXPORT_SYMBOL_GPL(ism_unregister_client);128 129static 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));146out:147 return resp->ret;148}149 150static 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 161static 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));174out:175 return 0;176}177 178static 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 205static 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 234static 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 254static 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 274static 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;288out:289 return ret;290}291 292static 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 300static 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 340out_free:341 kfree(dmb->cpu_addr);342out_bit:343 clear_bit(dmb->sba_idx, ism->sba_bitmap);344 return rc;345}346 347int 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);378out:379 return ret;380}381EXPORT_SYMBOL_GPL(ism_register_dmb);382 383int 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);404out:405 return ret;406}407EXPORT_SYMBOL_GPL(ism_unregister_dmb);408 409static 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 422static 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 435static 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 441int 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}464EXPORT_SYMBOL_GPL(ism_move);465 466static 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 486static 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 524static 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 else559 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 577unreg_ieq:578 unregister_ieq(ism);579unreg_sba:580 unregister_sba(ism);581free_irq:582 free_irq(pci_irq_vector(pdev, 0), ism);583free_client_arr:584 kfree(ism->sba_client_arr);585free_vectors:586 pci_free_irq_vectors(pdev);587out:588 return ret;589}590 591static 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 632err_resource:633 pci_release_mem_regions(pdev);634err_disable:635 pci_disable_device(pdev);636err:637 device_del(&ism->dev);638err_dev:639 dev_set_drvdata(&pdev->dev, NULL);640 kfree(ism);641 642 return ret;643}644 645static 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 675static 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 688static 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 695static 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 713static void __exit ism_exit(void)714{715 pci_unregister_driver(&ism_driver);716 debug_unregister(ism_debug_info);717}718 719module_init(ism_init);720module_exit(ism_exit);721 722/*************************** SMC-D Implementation *****************************/723 724#if IS_ENABLED(CONFIG_SMC)725static 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 741static 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 747static 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 753static 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 758static 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 763static 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 768static int smcd_set_vlan_required(struct smcd_dev *smcd)769{770 return ism_cmd_simple(smcd->priv, ISM_SET_VLAN);771}772 773static int smcd_reset_vlan_required(struct smcd_dev *smcd)774{775 return ism_cmd_simple(smcd->priv, ISM_RESET_VLAN);776}777 778static 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 795static 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 802static 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 809static int smcd_supports_v2(void)810{811 return ism_v2_capable;812}813 814static u64 ism_get_local_gid(struct ism_dev *ism)815{816 return ism->local_gid;817}818 819static 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 826static 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 834static u16 smcd_get_chid(struct smcd_dev *smcd)835{836 return ism_get_chid(smcd->priv);837}838 839static 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 846static 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 862const struct smcd_ops *ism_get_smcd_ops(void)863{864 return &ism_ops;865}866EXPORT_SYMBOL_GPL(ism_get_smcd_ops);867#endif868