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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
20MODULE_DESCRIPTION("ISM driver for s390");
21MODULE_LICENSE("GPL");
22
23#define PCI_DEVICE_ID_IBM_ISM 0x04ED
24#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 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
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 void ism_dev_release(struct device *dev)
592{
593 struct ism_dev *ism;
594
595 ism = container_of(dev, struct ism_dev, dev);
596
597 kfree(ism);
598}
599
600static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id)
601{
602 struct ism_dev *ism;
603 int ret;
604
605 ism = kzalloc(sizeof(*ism), GFP_KERNEL);
606 if (!ism)
607 return -ENOMEM;
608
609 spin_lock_init(&ism->lock);
610 dev_set_drvdata(&pdev->dev, ism);
611 ism->pdev = pdev;
612 ism->dev.parent = &pdev->dev;
613 ism->dev.release = ism_dev_release;
614 device_initialize(&ism->dev);
615 dev_set_name(&ism->dev, dev_name(&pdev->dev));
616 ret = device_add(&ism->dev);
617 if (ret)
618 goto err_dev;
619
620 ret = pci_enable_device_mem(pdev);
621 if (ret)
622 goto err;
623
624 ret = pci_request_mem_regions(pdev, DRV_NAME);
625 if (ret)
626 goto err_disable;
627
628 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
629 if (ret)
630 goto err_resource;
631
632 dma_set_seg_boundary(&pdev->dev, SZ_1M - 1);
633 dma_set_max_seg_size(&pdev->dev, SZ_1M);
634 pci_set_master(pdev);
635
636 ret = ism_dev_init(ism);
637 if (ret)
638 goto err_resource;
639
640 return 0;
641
642err_resource:
643 pci_release_mem_regions(pdev);
644err_disable:
645 pci_disable_device(pdev);
646err:
647 device_del(&ism->dev);
648err_dev:
649 dev_set_drvdata(&pdev->dev, NULL);
650 put_device(&ism->dev);
651
652 return ret;
653}
654
655static void ism_dev_exit(struct ism_dev *ism)
656{
657 struct pci_dev *pdev = ism->pdev;
658 unsigned long flags;
659 int i;
660
661 spin_lock_irqsave(&ism->lock, flags);
662 for (i = 0; i < max_client; ++i)
663 ism->subs[i] = NULL;
664 spin_unlock_irqrestore(&ism->lock, flags);
665
666 mutex_lock(&ism_dev_list.mutex);
667 mutex_lock(&clients_lock);
668 for (i = 0; i < max_client; ++i) {
669 if (clients[i])
670 clients[i]->remove(ism);
671 }
672 mutex_unlock(&clients_lock);
673
674 if (ism_v2_capable)
675 ism_del_vlan_id(ism, ISM_RESERVED_VLANID);
676 unregister_ieq(ism);
677 unregister_sba(ism);
678 free_irq(pci_irq_vector(pdev, 0), ism);
679 kfree(ism->sba_client_arr);
680 pci_free_irq_vectors(pdev);
681 list_del_init(&ism->list);
682 mutex_unlock(&ism_dev_list.mutex);
683}
684
685static void ism_remove(struct pci_dev *pdev)
686{
687 struct ism_dev *ism = dev_get_drvdata(&pdev->dev);
688
689 ism_dev_exit(ism);
690
691 pci_release_mem_regions(pdev);
692 pci_disable_device(pdev);
693 device_del(&ism->dev);
694 dev_set_drvdata(&pdev->dev, NULL);
695 put_device(&ism->dev);
696}
697
698static struct pci_driver ism_driver = {
699 .name = DRV_NAME,
700 .id_table = ism_device_table,
701 .probe = ism_probe,
702 .remove = ism_remove,
703};
704
705static int __init ism_init(void)
706{
707 int ret;
708
709 ism_debug_info = debug_register("ism", 2, 1, 16);
710 if (!ism_debug_info)
711 return -ENODEV;
712
713 memset(clients, 0, sizeof(clients));
714 max_client = 0;
715 debug_register_view(ism_debug_info, &debug_hex_ascii_view);
716 ret = pci_register_driver(&ism_driver);
717 if (ret)
718 debug_unregister(ism_debug_info);
719
720 return ret;
721}
722
723static void __exit ism_exit(void)
724{
725 pci_unregister_driver(&ism_driver);
726 debug_unregister(ism_debug_info);
727}
728
729module_init(ism_init);
730module_exit(ism_exit);
731
732/*************************** SMC-D Implementation *****************************/
733
734#if IS_ENABLED(CONFIG_SMC)
735static int ism_query_rgid(struct ism_dev *ism, u64 rgid, u32 vid_valid,
736 u32 vid)
737{
738 union ism_query_rgid cmd;
739
740 memset(&cmd, 0, sizeof(cmd));
741 cmd.request.hdr.cmd = ISM_QUERY_RGID;
742 cmd.request.hdr.len = sizeof(cmd.request);
743
744 cmd.request.rgid = rgid;
745 cmd.request.vlan_valid = vid_valid;
746 cmd.request.vlan_id = vid;
747
748 return ism_cmd(ism, &cmd);
749}
750
751static int smcd_query_rgid(struct smcd_dev *smcd, struct smcd_gid *rgid,
752 u32 vid_valid, u32 vid)
753{
754 return ism_query_rgid(smcd->priv, rgid->gid, vid_valid, vid);
755}
756
757static int smcd_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb,
758 void *client)
759{
760 return ism_register_dmb(smcd->priv, (struct ism_dmb *)dmb, client);
761}
762
763static int smcd_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)
764{
765 return ism_unregister_dmb(smcd->priv, (struct ism_dmb *)dmb);
766}
767
768static int smcd_add_vlan_id(struct smcd_dev *smcd, u64 vlan_id)
769{
770 return ism_add_vlan_id(smcd->priv, vlan_id);
771}
772
773static int smcd_del_vlan_id(struct smcd_dev *smcd, u64 vlan_id)
774{
775 return ism_del_vlan_id(smcd->priv, vlan_id);
776}
777
778static int smcd_set_vlan_required(struct smcd_dev *smcd)
779{
780 return ism_cmd_simple(smcd->priv, ISM_SET_VLAN);
781}
782
783static int smcd_reset_vlan_required(struct smcd_dev *smcd)
784{
785 return ism_cmd_simple(smcd->priv, ISM_RESET_VLAN);
786}
787
788static int ism_signal_ieq(struct ism_dev *ism, u64 rgid, u32 trigger_irq,
789 u32 event_code, u64 info)
790{
791 union ism_sig_ieq cmd;
792
793 memset(&cmd, 0, sizeof(cmd));
794 cmd.request.hdr.cmd = ISM_SIGNAL_IEQ;
795 cmd.request.hdr.len = sizeof(cmd.request);
796
797 cmd.request.rgid = rgid;
798 cmd.request.trigger_irq = trigger_irq;
799 cmd.request.event_code = event_code;
800 cmd.request.info = info;
801
802 return ism_cmd(ism, &cmd);
803}
804
805static int smcd_signal_ieq(struct smcd_dev *smcd, struct smcd_gid *rgid,
806 u32 trigger_irq, u32 event_code, u64 info)
807{
808 return ism_signal_ieq(smcd->priv, rgid->gid,
809 trigger_irq, event_code, info);
810}
811
812static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx,
813 bool sf, unsigned int offset, void *data,
814 unsigned int size)
815{
816 return ism_move(smcd->priv, dmb_tok, idx, sf, offset, data, size);
817}
818
819static int smcd_supports_v2(void)
820{
821 return ism_v2_capable;
822}
823
824static u64 ism_get_local_gid(struct ism_dev *ism)
825{
826 return ism->local_gid;
827}
828
829static void smcd_get_local_gid(struct smcd_dev *smcd,
830 struct smcd_gid *smcd_gid)
831{
832 smcd_gid->gid = ism_get_local_gid(smcd->priv);
833 smcd_gid->gid_ext = 0;
834}
835
836static u16 ism_get_chid(struct ism_dev *ism)
837{
838 if (!ism || !ism->pdev)
839 return 0;
840
841 return to_zpci(ism->pdev)->pchid;
842}
843
844static u16 smcd_get_chid(struct smcd_dev *smcd)
845{
846 return ism_get_chid(smcd->priv);
847}
848
849static inline struct device *smcd_get_dev(struct smcd_dev *dev)
850{
851 struct ism_dev *ism = dev->priv;
852
853 return &ism->dev;
854}
855
856static const struct smcd_ops ism_ops = {
857 .query_remote_gid = smcd_query_rgid,
858 .register_dmb = smcd_register_dmb,
859 .unregister_dmb = smcd_unregister_dmb,
860 .add_vlan_id = smcd_add_vlan_id,
861 .del_vlan_id = smcd_del_vlan_id,
862 .set_vlan_required = smcd_set_vlan_required,
863 .reset_vlan_required = smcd_reset_vlan_required,
864 .signal_event = smcd_signal_ieq,
865 .move_data = smcd_move,
866 .supports_v2 = smcd_supports_v2,
867 .get_local_gid = smcd_get_local_gid,
868 .get_chid = smcd_get_chid,
869 .get_dev = smcd_get_dev,
870};
871
872const struct smcd_ops *ism_get_smcd_ops(void)
873{
874 return &ism_ops;
875}
876EXPORT_SYMBOL_GPL(ism_get_smcd_ops);
877#endif