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33#include <linux/acpi.h>
34#include <linux/of_platform.h>
35#include <rdma/ib_addr.h>
36#include <rdma/ib_smi.h>
37#include <rdma/ib_user_verbs.h>
38#include "hns_roce_common.h"
39#include "hns_roce_device.h"
40#include "hns_roce_user.h"
41#include "hns_roce_hem.h"
42
43
44
45
46
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48
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55
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59
60static void hns_roce_addrconf_ifid_eui48(u8 *eui, u16 vlan_id,
61 struct net_device *dev)
62{
63 memcpy(eui, dev->dev_addr, 3);
64 memcpy(eui + 5, dev->dev_addr + 3, 3);
65 if (vlan_id < 0x1000) {
66 eui[3] = vlan_id >> 8;
67 eui[4] = vlan_id & 0xff;
68 } else {
69 eui[3] = 0xff;
70 eui[4] = 0xfe;
71 }
72 eui[0] ^= 2;
73}
74
75static void hns_roce_make_default_gid(struct net_device *dev, union ib_gid *gid)
76{
77 memset(gid, 0, sizeof(*gid));
78 gid->raw[0] = 0xFE;
79 gid->raw[1] = 0x80;
80 hns_roce_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev);
81}
82
83
84
85
86
87
88
89
90
91
92
93
94int hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index)
95{
96 return gid_index * hr_dev->caps.num_ports + port;
97}
98
99static int hns_roce_set_gid(struct hns_roce_dev *hr_dev, u8 port, int gid_index,
100 union ib_gid *gid)
101{
102 struct device *dev = &hr_dev->pdev->dev;
103 u8 gid_idx = 0;
104
105 if (gid_index >= hr_dev->caps.gid_table_len[port]) {
106 dev_err(dev, "gid_index %d illegal, port %d gid range: 0~%d\n",
107 gid_index, port, hr_dev->caps.gid_table_len[port] - 1);
108 return -EINVAL;
109 }
110
111 gid_idx = hns_get_gid_index(hr_dev, port, gid_index);
112
113 if (!memcmp(gid, &hr_dev->iboe.gid_table[gid_idx], sizeof(*gid)))
114 return -EINVAL;
115
116 memcpy(&hr_dev->iboe.gid_table[gid_idx], gid, sizeof(*gid));
117
118 hr_dev->hw->set_gid(hr_dev, port, gid_index, gid);
119
120 return 0;
121}
122
123static void hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
124{
125 u8 phy_port;
126 u32 i = 0;
127
128 if (!memcmp(hr_dev->dev_addr[port], addr, MAC_ADDR_OCTET_NUM))
129 return;
130
131 for (i = 0; i < MAC_ADDR_OCTET_NUM; i++)
132 hr_dev->dev_addr[port][i] = addr[i];
133
134 phy_port = hr_dev->iboe.phy_port[port];
135 hr_dev->hw->set_mac(hr_dev, phy_port, addr);
136}
137
138static void hns_roce_set_mtu(struct hns_roce_dev *hr_dev, u8 port, int mtu)
139{
140 u8 phy_port = hr_dev->iboe.phy_port[port];
141 enum ib_mtu tmp;
142
143 tmp = iboe_get_mtu(mtu);
144 if (!tmp)
145 tmp = IB_MTU_256;
146
147 hr_dev->hw->set_mtu(hr_dev, phy_port, tmp);
148}
149
150static void hns_roce_update_gids(struct hns_roce_dev *hr_dev, int port)
151{
152 struct ib_event event;
153
154
155 event.device = &hr_dev->ib_dev;
156 event.element.port_num = port + 1;
157 event.event = IB_EVENT_GID_CHANGE;
158 ib_dispatch_event(&event);
159}
160
161static int handle_en_event(struct hns_roce_dev *hr_dev, u8 port,
162 unsigned long event)
163{
164 struct device *dev = &hr_dev->pdev->dev;
165 struct net_device *netdev;
166 unsigned long flags;
167 union ib_gid gid;
168 int ret = 0;
169
170 netdev = hr_dev->iboe.netdevs[port];
171 if (!netdev) {
172 dev_err(dev, "port(%d) can't find netdev\n", port);
173 return -ENODEV;
174 }
175
176 spin_lock_irqsave(&hr_dev->iboe.lock, flags);
177
178 switch (event) {
179 case NETDEV_UP:
180 case NETDEV_CHANGE:
181 case NETDEV_REGISTER:
182 case NETDEV_CHANGEADDR:
183 hns_roce_set_mac(hr_dev, port, netdev->dev_addr);
184 hns_roce_make_default_gid(netdev, &gid);
185 ret = hns_roce_set_gid(hr_dev, port, 0, &gid);
186 if (!ret)
187 hns_roce_update_gids(hr_dev, port);
188 break;
189 case NETDEV_DOWN:
190
191
192
193 break;
194 default:
195 dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(event));
196 break;
197 }
198
199 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
200 return ret;
201}
202
203static int hns_roce_netdev_event(struct notifier_block *self,
204 unsigned long event, void *ptr)
205{
206 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
207 struct hns_roce_ib_iboe *iboe = NULL;
208 struct hns_roce_dev *hr_dev = NULL;
209 u8 port = 0;
210 int ret = 0;
211
212 hr_dev = container_of(self, struct hns_roce_dev, iboe.nb);
213 iboe = &hr_dev->iboe;
214
215 for (port = 0; port < hr_dev->caps.num_ports; port++) {
216 if (dev == iboe->netdevs[port]) {
217 ret = handle_en_event(hr_dev, port, event);
218 if (ret)
219 return NOTIFY_DONE;
220 break;
221 }
222 }
223
224 return NOTIFY_DONE;
225}
226
227static void hns_roce_addr_event(int event, struct net_device *event_netdev,
228 struct hns_roce_dev *hr_dev, union ib_gid *gid)
229{
230 struct hns_roce_ib_iboe *iboe = NULL;
231 int gid_table_len = 0;
232 unsigned long flags;
233 union ib_gid zgid;
234 u8 gid_idx = 0;
235 u8 port = 0;
236 int i = 0;
237 int free;
238 struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ?
239 rdma_vlan_dev_real_dev(event_netdev) :
240 event_netdev;
241
242 if (event != NETDEV_UP && event != NETDEV_DOWN)
243 return;
244
245 iboe = &hr_dev->iboe;
246 while (port < hr_dev->caps.num_ports) {
247 if (real_dev == iboe->netdevs[port])
248 break;
249 port++;
250 }
251
252 if (port >= hr_dev->caps.num_ports) {
253 dev_dbg(&hr_dev->pdev->dev, "can't find netdev\n");
254 return;
255 }
256
257 memset(zgid.raw, 0, sizeof(zgid.raw));
258 free = -1;
259 gid_table_len = hr_dev->caps.gid_table_len[port];
260
261 spin_lock_irqsave(&hr_dev->iboe.lock, flags);
262
263 for (i = 0; i < gid_table_len; i++) {
264 gid_idx = hns_get_gid_index(hr_dev, port, i);
265 if (!memcmp(gid->raw, iboe->gid_table[gid_idx].raw,
266 sizeof(gid->raw)))
267 break;
268 if (free < 0 && !memcmp(zgid.raw,
269 iboe->gid_table[gid_idx].raw, sizeof(zgid.raw)))
270 free = i;
271 }
272
273 if (i >= gid_table_len) {
274 if (free < 0) {
275 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
276 dev_dbg(&hr_dev->pdev->dev,
277 "gid_index overflow, port(%d)\n", port);
278 return;
279 }
280 if (!hns_roce_set_gid(hr_dev, port, free, gid))
281 hns_roce_update_gids(hr_dev, port);
282 } else if (event == NETDEV_DOWN) {
283 if (!hns_roce_set_gid(hr_dev, port, i, &zgid))
284 hns_roce_update_gids(hr_dev, port);
285 }
286
287 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
288}
289
290static int hns_roce_inet_event(struct notifier_block *self, unsigned long event,
291 void *ptr)
292{
293 struct in_ifaddr *ifa = ptr;
294 struct hns_roce_dev *hr_dev;
295 struct net_device *dev = ifa->ifa_dev->dev;
296 union ib_gid gid;
297
298 ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
299
300 hr_dev = container_of(self, struct hns_roce_dev, iboe.nb_inet);
301
302 hns_roce_addr_event(event, dev, hr_dev, &gid);
303
304 return NOTIFY_DONE;
305}
306
307static int hns_roce_setup_mtu_gids(struct hns_roce_dev *hr_dev)
308{
309 struct in_ifaddr *ifa_list = NULL;
310 union ib_gid gid = {{0} };
311 u32 ipaddr = 0;
312 int index = 0;
313 int ret = 0;
314 u8 i = 0;
315
316 for (i = 0; i < hr_dev->caps.num_ports; i++) {
317 hns_roce_set_mtu(hr_dev, i,
318 ib_mtu_enum_to_int(hr_dev->caps.max_mtu));
319 hns_roce_set_mac(hr_dev, i, hr_dev->iboe.netdevs[i]->dev_addr);
320
321 if (hr_dev->iboe.netdevs[i]->ip_ptr) {
322 ifa_list = hr_dev->iboe.netdevs[i]->ip_ptr->ifa_list;
323 index = 1;
324 while (ifa_list) {
325 ipaddr = ifa_list->ifa_address;
326 ipv6_addr_set_v4mapped(ipaddr,
327 (struct in6_addr *)&gid);
328 ret = hns_roce_set_gid(hr_dev, i, index, &gid);
329 if (ret)
330 break;
331 index++;
332 ifa_list = ifa_list->ifa_next;
333 }
334 hns_roce_update_gids(hr_dev, i);
335 }
336 }
337
338 return ret;
339}
340
341static int hns_roce_query_device(struct ib_device *ib_dev,
342 struct ib_device_attr *props,
343 struct ib_udata *uhw)
344{
345 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
346
347 memset(props, 0, sizeof(*props));
348
349 props->sys_image_guid = hr_dev->sys_image_guid;
350 props->max_mr_size = (u64)(~(0ULL));
351 props->page_size_cap = hr_dev->caps.page_size_cap;
352 props->vendor_id = hr_dev->vendor_id;
353 props->vendor_part_id = hr_dev->vendor_part_id;
354 props->hw_ver = hr_dev->hw_rev;
355 props->max_qp = hr_dev->caps.num_qps;
356 props->max_qp_wr = hr_dev->caps.max_wqes;
357 props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
358 IB_DEVICE_RC_RNR_NAK_GEN;
359 props->max_sge = hr_dev->caps.max_sq_sg;
360 props->max_sge_rd = 1;
361 props->max_cq = hr_dev->caps.num_cqs;
362 props->max_cqe = hr_dev->caps.max_cqes;
363 props->max_mr = hr_dev->caps.num_mtpts;
364 props->max_pd = hr_dev->caps.num_pds;
365 props->max_qp_rd_atom = hr_dev->caps.max_qp_dest_rdma;
366 props->max_qp_init_rd_atom = hr_dev->caps.max_qp_init_rdma;
367 props->atomic_cap = IB_ATOMIC_NONE;
368 props->max_pkeys = 1;
369 props->local_ca_ack_delay = hr_dev->caps.local_ca_ack_delay;
370
371 return 0;
372}
373
374static struct net_device *hns_roce_get_netdev(struct ib_device *ib_dev,
375 u8 port_num)
376{
377 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
378 struct net_device *ndev;
379
380 if (port_num < 1 || port_num > hr_dev->caps.num_ports)
381 return NULL;
382
383 rcu_read_lock();
384
385 ndev = hr_dev->iboe.netdevs[port_num - 1];
386 if (ndev)
387 dev_hold(ndev);
388
389 rcu_read_unlock();
390 return ndev;
391}
392
393static int hns_roce_query_port(struct ib_device *ib_dev, u8 port_num,
394 struct ib_port_attr *props)
395{
396 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
397 struct device *dev = &hr_dev->pdev->dev;
398 struct net_device *net_dev;
399 unsigned long flags;
400 enum ib_mtu mtu;
401 u8 port;
402
403 assert(port_num > 0);
404 port = port_num - 1;
405
406 memset(props, 0, sizeof(*props));
407
408 props->max_mtu = hr_dev->caps.max_mtu;
409 props->gid_tbl_len = hr_dev->caps.gid_table_len[port];
410 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
411 IB_PORT_VENDOR_CLASS_SUP |
412 IB_PORT_BOOT_MGMT_SUP;
413 props->max_msg_sz = HNS_ROCE_MAX_MSG_LEN;
414 props->pkey_tbl_len = 1;
415 props->active_width = IB_WIDTH_4X;
416 props->active_speed = 1;
417
418 spin_lock_irqsave(&hr_dev->iboe.lock, flags);
419
420 net_dev = hr_dev->iboe.netdevs[port];
421 if (!net_dev) {
422 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
423 dev_err(dev, "find netdev %d failed!\r\n", port);
424 return -EINVAL;
425 }
426
427 mtu = iboe_get_mtu(net_dev->mtu);
428 props->active_mtu = mtu ? min(props->max_mtu, mtu) : IB_MTU_256;
429 props->state = (netif_running(net_dev) && netif_carrier_ok(net_dev)) ?
430 IB_PORT_ACTIVE : IB_PORT_DOWN;
431 props->phys_state = (props->state == IB_PORT_ACTIVE) ? 5 : 3;
432
433 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
434
435 return 0;
436}
437
438static enum rdma_link_layer hns_roce_get_link_layer(struct ib_device *device,
439 u8 port_num)
440{
441 return IB_LINK_LAYER_ETHERNET;
442}
443
444static int hns_roce_query_gid(struct ib_device *ib_dev, u8 port_num, int index,
445 union ib_gid *gid)
446{
447 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
448 struct device *dev = &hr_dev->pdev->dev;
449 u8 gid_idx = 0;
450 u8 port;
451
452 if (port_num < 1 || port_num > hr_dev->caps.num_ports ||
453 index >= hr_dev->caps.gid_table_len[port_num - 1]) {
454 dev_err(dev,
455 "port_num %d index %d illegal! correct range: port_num 1~%d index 0~%d!\n",
456 port_num, index, hr_dev->caps.num_ports,
457 hr_dev->caps.gid_table_len[port_num - 1] - 1);
458 return -EINVAL;
459 }
460
461 port = port_num - 1;
462 gid_idx = hns_get_gid_index(hr_dev, port, index);
463 if (gid_idx >= HNS_ROCE_MAX_GID_NUM) {
464 dev_err(dev, "port_num %d index %d illegal! total gid num %d!\n",
465 port_num, index, HNS_ROCE_MAX_GID_NUM);
466 return -EINVAL;
467 }
468
469 memcpy(gid->raw, hr_dev->iboe.gid_table[gid_idx].raw,
470 HNS_ROCE_GID_SIZE);
471
472 return 0;
473}
474
475static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index,
476 u16 *pkey)
477{
478 *pkey = PKEY_ID;
479
480 return 0;
481}
482
483static int hns_roce_modify_device(struct ib_device *ib_dev, int mask,
484 struct ib_device_modify *props)
485{
486 unsigned long flags;
487
488 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
489 return -EOPNOTSUPP;
490
491 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
492 spin_lock_irqsave(&to_hr_dev(ib_dev)->sm_lock, flags);
493 memcpy(ib_dev->node_desc, props->node_desc, NODE_DESC_SIZE);
494 spin_unlock_irqrestore(&to_hr_dev(ib_dev)->sm_lock, flags);
495 }
496
497 return 0;
498}
499
500static int hns_roce_modify_port(struct ib_device *ib_dev, u8 port_num, int mask,
501 struct ib_port_modify *props)
502{
503 return 0;
504}
505
506static struct ib_ucontext *hns_roce_alloc_ucontext(struct ib_device *ib_dev,
507 struct ib_udata *udata)
508{
509 int ret = 0;
510 struct hns_roce_ucontext *context;
511 struct hns_roce_ib_alloc_ucontext_resp resp;
512 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
513
514 resp.qp_tab_size = hr_dev->caps.num_qps;
515
516 context = kmalloc(sizeof(*context), GFP_KERNEL);
517 if (!context)
518 return ERR_PTR(-ENOMEM);
519
520 ret = hns_roce_uar_alloc(hr_dev, &context->uar);
521 if (ret)
522 goto error_fail_uar_alloc;
523
524 ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
525 if (ret)
526 goto error_fail_copy_to_udata;
527
528 return &context->ibucontext;
529
530error_fail_copy_to_udata:
531 hns_roce_uar_free(hr_dev, &context->uar);
532
533error_fail_uar_alloc:
534 kfree(context);
535
536 return ERR_PTR(ret);
537}
538
539static int hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext)
540{
541 struct hns_roce_ucontext *context = to_hr_ucontext(ibcontext);
542
543 hns_roce_uar_free(to_hr_dev(ibcontext->device), &context->uar);
544 kfree(context);
545
546 return 0;
547}
548
549static int hns_roce_mmap(struct ib_ucontext *context,
550 struct vm_area_struct *vma)
551{
552 if (((vma->vm_end - vma->vm_start) % PAGE_SIZE) != 0)
553 return -EINVAL;
554
555 if (vma->vm_pgoff == 0) {
556 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
557 if (io_remap_pfn_range(vma, vma->vm_start,
558 to_hr_ucontext(context)->uar.pfn,
559 PAGE_SIZE, vma->vm_page_prot))
560 return -EAGAIN;
561
562 } else {
563 return -EINVAL;
564 }
565
566 return 0;
567}
568
569static int hns_roce_port_immutable(struct ib_device *ib_dev, u8 port_num,
570 struct ib_port_immutable *immutable)
571{
572 struct ib_port_attr attr;
573 int ret;
574
575 ret = hns_roce_query_port(ib_dev, port_num, &attr);
576 if (ret)
577 return ret;
578
579 immutable->pkey_tbl_len = attr.pkey_tbl_len;
580 immutable->gid_tbl_len = attr.gid_tbl_len;
581
582 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
583 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
584
585 return 0;
586}
587
588static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
589{
590 struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;
591
592 unregister_inetaddr_notifier(&iboe->nb_inet);
593 unregister_netdevice_notifier(&iboe->nb);
594 ib_unregister_device(&hr_dev->ib_dev);
595}
596
597static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
598{
599 int ret;
600 struct hns_roce_ib_iboe *iboe = NULL;
601 struct ib_device *ib_dev = NULL;
602 struct device *dev = &hr_dev->pdev->dev;
603
604 iboe = &hr_dev->iboe;
605 spin_lock_init(&iboe->lock);
606
607 ib_dev = &hr_dev->ib_dev;
608 strlcpy(ib_dev->name, "hisi_%d", IB_DEVICE_NAME_MAX);
609
610 ib_dev->owner = THIS_MODULE;
611 ib_dev->node_type = RDMA_NODE_IB_CA;
612 ib_dev->dma_device = dev;
613
614 ib_dev->phys_port_cnt = hr_dev->caps.num_ports;
615 ib_dev->local_dma_lkey = hr_dev->caps.reserved_lkey;
616 ib_dev->num_comp_vectors = hr_dev->caps.num_comp_vectors;
617 ib_dev->uverbs_abi_ver = 1;
618 ib_dev->uverbs_cmd_mask =
619 (1ULL << IB_USER_VERBS_CMD_GET_CONTEXT) |
620 (1ULL << IB_USER_VERBS_CMD_QUERY_DEVICE) |
621 (1ULL << IB_USER_VERBS_CMD_QUERY_PORT) |
622 (1ULL << IB_USER_VERBS_CMD_ALLOC_PD) |
623 (1ULL << IB_USER_VERBS_CMD_DEALLOC_PD) |
624 (1ULL << IB_USER_VERBS_CMD_REG_MR) |
625 (1ULL << IB_USER_VERBS_CMD_DEREG_MR) |
626 (1ULL << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
627 (1ULL << IB_USER_VERBS_CMD_CREATE_CQ) |
628 (1ULL << IB_USER_VERBS_CMD_DESTROY_CQ) |
629 (1ULL << IB_USER_VERBS_CMD_CREATE_QP) |
630 (1ULL << IB_USER_VERBS_CMD_MODIFY_QP) |
631 (1ULL << IB_USER_VERBS_CMD_QUERY_QP) |
632 (1ULL << IB_USER_VERBS_CMD_DESTROY_QP);
633
634
635 ib_dev->modify_device = hns_roce_modify_device;
636 ib_dev->query_device = hns_roce_query_device;
637 ib_dev->query_port = hns_roce_query_port;
638 ib_dev->modify_port = hns_roce_modify_port;
639 ib_dev->get_link_layer = hns_roce_get_link_layer;
640 ib_dev->get_netdev = hns_roce_get_netdev;
641 ib_dev->query_gid = hns_roce_query_gid;
642 ib_dev->query_pkey = hns_roce_query_pkey;
643 ib_dev->alloc_ucontext = hns_roce_alloc_ucontext;
644 ib_dev->dealloc_ucontext = hns_roce_dealloc_ucontext;
645 ib_dev->mmap = hns_roce_mmap;
646
647
648 ib_dev->alloc_pd = hns_roce_alloc_pd;
649 ib_dev->dealloc_pd = hns_roce_dealloc_pd;
650
651
652 ib_dev->create_ah = hns_roce_create_ah;
653 ib_dev->query_ah = hns_roce_query_ah;
654 ib_dev->destroy_ah = hns_roce_destroy_ah;
655
656
657 ib_dev->create_qp = hns_roce_create_qp;
658 ib_dev->modify_qp = hns_roce_modify_qp;
659 ib_dev->query_qp = hr_dev->hw->query_qp;
660 ib_dev->destroy_qp = hr_dev->hw->destroy_qp;
661 ib_dev->post_send = hr_dev->hw->post_send;
662 ib_dev->post_recv = hr_dev->hw->post_recv;
663
664
665 ib_dev->create_cq = hns_roce_ib_create_cq;
666 ib_dev->destroy_cq = hns_roce_ib_destroy_cq;
667 ib_dev->req_notify_cq = hr_dev->hw->req_notify_cq;
668 ib_dev->poll_cq = hr_dev->hw->poll_cq;
669
670
671 ib_dev->get_dma_mr = hns_roce_get_dma_mr;
672 ib_dev->reg_user_mr = hns_roce_reg_user_mr;
673 ib_dev->dereg_mr = hns_roce_dereg_mr;
674
675
676 ib_dev->get_port_immutable = hns_roce_port_immutable;
677
678 ret = ib_register_device(ib_dev, NULL);
679 if (ret) {
680 dev_err(dev, "ib_register_device failed!\n");
681 return ret;
682 }
683
684 ret = hns_roce_setup_mtu_gids(hr_dev);
685 if (ret) {
686 dev_err(dev, "roce_setup_mtu_gids failed!\n");
687 goto error_failed_setup_mtu_gids;
688 }
689
690 iboe->nb.notifier_call = hns_roce_netdev_event;
691 ret = register_netdevice_notifier(&iboe->nb);
692 if (ret) {
693 dev_err(dev, "register_netdevice_notifier failed!\n");
694 goto error_failed_setup_mtu_gids;
695 }
696
697 iboe->nb_inet.notifier_call = hns_roce_inet_event;
698 ret = register_inetaddr_notifier(&iboe->nb_inet);
699 if (ret) {
700 dev_err(dev, "register inet addr notifier failed!\n");
701 goto error_failed_register_inetaddr_notifier;
702 }
703
704 return 0;
705
706error_failed_register_inetaddr_notifier:
707 unregister_netdevice_notifier(&iboe->nb);
708
709error_failed_setup_mtu_gids:
710 ib_unregister_device(ib_dev);
711
712 return ret;
713}
714
715static const struct of_device_id hns_roce_of_match[] = {
716 { .compatible = "hisilicon,hns-roce-v1", .data = &hns_roce_hw_v1, },
717 {},
718};
719MODULE_DEVICE_TABLE(of, hns_roce_of_match);
720
721static const struct acpi_device_id hns_roce_acpi_match[] = {
722 { "HISI00D1", (kernel_ulong_t)&hns_roce_hw_v1 },
723 {},
724};
725MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);
726
727static int hns_roce_node_match(struct device *dev, void *fwnode)
728{
729 return dev->fwnode == fwnode;
730}
731
732static struct
733platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode)
734{
735 struct device *dev;
736
737
738 dev = bus_find_device(&platform_bus_type, NULL,
739 fwnode, hns_roce_node_match);
740
741 return dev ? to_platform_device(dev) : NULL;
742}
743
744static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev)
745{
746 int i;
747 int ret;
748 u8 phy_port;
749 int port_cnt = 0;
750 struct device *dev = &hr_dev->pdev->dev;
751 struct device_node *net_node;
752 struct net_device *netdev = NULL;
753 struct platform_device *pdev = NULL;
754 struct resource *res;
755
756
757 if (dev_of_node(dev)) {
758 const struct of_device_id *of_id;
759
760 of_id = of_match_node(hns_roce_of_match, dev->of_node);
761 if (!of_id) {
762 dev_err(dev, "device is not compatible!\n");
763 return -ENXIO;
764 }
765 hr_dev->hw = (struct hns_roce_hw *)of_id->data;
766 if (!hr_dev->hw) {
767 dev_err(dev, "couldn't get H/W specific DT data!\n");
768 return -ENXIO;
769 }
770 } else if (is_acpi_device_node(dev->fwnode)) {
771 const struct acpi_device_id *acpi_id;
772
773 acpi_id = acpi_match_device(hns_roce_acpi_match, dev);
774 if (!acpi_id) {
775 dev_err(dev, "device is not compatible!\n");
776 return -ENXIO;
777 }
778 hr_dev->hw = (struct hns_roce_hw *) acpi_id->driver_data;
779 if (!hr_dev->hw) {
780 dev_err(dev, "couldn't get H/W specific ACPI data!\n");
781 return -ENXIO;
782 }
783 } else {
784 dev_err(dev, "can't read compatibility data from DT or ACPI\n");
785 return -ENXIO;
786 }
787
788
789 res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0);
790 if (!res) {
791 dev_err(dev, "memory resource not found!\n");
792 return -EINVAL;
793 }
794 hr_dev->reg_base = devm_ioremap_resource(dev, res);
795 if (IS_ERR(hr_dev->reg_base))
796 return PTR_ERR(hr_dev->reg_base);
797
798
799 ret = device_property_read_u8_array(dev, "node-guid",
800 (u8 *)&hr_dev->ib_dev.node_guid,
801 GUID_LEN);
802 if (ret) {
803 dev_err(dev, "couldn't get node_guid from DT or ACPI!\n");
804 return ret;
805 }
806
807
808 for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) {
809 if (dev_of_node(dev)) {
810 net_node = of_parse_phandle(dev->of_node, "eth-handle",
811 i);
812 if (!net_node)
813 continue;
814 pdev = of_find_device_by_node(net_node);
815 } else if (is_acpi_device_node(dev->fwnode)) {
816 struct acpi_reference_args args;
817 struct fwnode_handle *fwnode;
818
819 ret = acpi_node_get_property_reference(dev->fwnode,
820 "eth-handle",
821 i, &args);
822 if (ret)
823 continue;
824 fwnode = acpi_fwnode_handle(args.adev);
825 pdev = hns_roce_find_pdev(fwnode);
826 } else {
827 dev_err(dev, "cannot read data from DT or ACPI\n");
828 return -ENXIO;
829 }
830
831 if (pdev) {
832 netdev = platform_get_drvdata(pdev);
833 phy_port = (u8)i;
834 if (netdev) {
835 hr_dev->iboe.netdevs[port_cnt] = netdev;
836 hr_dev->iboe.phy_port[port_cnt] = phy_port;
837 } else {
838 dev_err(dev, "no netdev found with pdev %s\n",
839 pdev->name);
840 return -ENODEV;
841 }
842 port_cnt++;
843 }
844 }
845
846 if (port_cnt == 0) {
847 dev_err(dev, "unable to get eth-handle for available ports!\n");
848 return -EINVAL;
849 }
850
851 hr_dev->caps.num_ports = port_cnt;
852
853
854 hr_dev->cmd_mod = 1;
855 hr_dev->loop_idc = 0;
856
857
858 ret = device_property_read_string_array(dev, "interrupt-names",
859 hr_dev->irq_names,
860 HNS_ROCE_MAX_IRQ_NUM);
861 if (ret < 0) {
862 dev_err(dev, "couldn't get interrupt names from DT or ACPI!\n");
863 return ret;
864 }
865
866
867 for (i = 0; i < HNS_ROCE_MAX_IRQ_NUM; i++) {
868 hr_dev->irq[i] = platform_get_irq(hr_dev->pdev, i);
869 if (hr_dev->irq[i] <= 0) {
870 dev_err(dev, "platform get of irq[=%d] failed!\n", i);
871 return -EINVAL;
872 }
873 }
874
875 return 0;
876}
877
878static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
879{
880 int ret;
881 struct device *dev = &hr_dev->pdev->dev;
882
883 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtt_table,
884 HEM_TYPE_MTT, hr_dev->caps.mtt_entry_sz,
885 hr_dev->caps.num_mtt_segs, 1);
886 if (ret) {
887 dev_err(dev, "Failed to init MTT context memory, aborting.\n");
888 return ret;
889 }
890
891 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table,
892 HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz,
893 hr_dev->caps.num_mtpts, 1);
894 if (ret) {
895 dev_err(dev, "Failed to init MTPT context memory, aborting.\n");
896 goto err_unmap_mtt;
897 }
898
899 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table,
900 HEM_TYPE_QPC, hr_dev->caps.qpc_entry_sz,
901 hr_dev->caps.num_qps, 1);
902 if (ret) {
903 dev_err(dev, "Failed to init QP context memory, aborting.\n");
904 goto err_unmap_dmpt;
905 }
906
907 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.irrl_table,
908 HEM_TYPE_IRRL,
909 hr_dev->caps.irrl_entry_sz *
910 hr_dev->caps.max_qp_init_rdma,
911 hr_dev->caps.num_qps, 1);
912 if (ret) {
913 dev_err(dev, "Failed to init irrl_table memory, aborting.\n");
914 goto err_unmap_qp;
915 }
916
917 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table,
918 HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz,
919 hr_dev->caps.num_cqs, 1);
920 if (ret) {
921 dev_err(dev, "Failed to init CQ context memory, aborting.\n");
922 goto err_unmap_irrl;
923 }
924
925 return 0;
926
927err_unmap_irrl:
928 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.irrl_table);
929
930err_unmap_qp:
931 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.qp_table);
932
933err_unmap_dmpt:
934 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table);
935
936err_unmap_mtt:
937 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtt_table);
938
939 return ret;
940}
941
942
943
944
945
946
947static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev)
948{
949 int ret;
950 struct device *dev = &hr_dev->pdev->dev;
951
952 spin_lock_init(&hr_dev->sm_lock);
953 spin_lock_init(&hr_dev->bt_cmd_lock);
954
955 ret = hns_roce_init_uar_table(hr_dev);
956 if (ret) {
957 dev_err(dev, "Failed to initialize uar table. aborting\n");
958 return ret;
959 }
960
961 ret = hns_roce_uar_alloc(hr_dev, &hr_dev->priv_uar);
962 if (ret) {
963 dev_err(dev, "Failed to allocate priv_uar.\n");
964 goto err_uar_table_free;
965 }
966
967 ret = hns_roce_init_pd_table(hr_dev);
968 if (ret) {
969 dev_err(dev, "Failed to init protected domain table.\n");
970 goto err_uar_alloc_free;
971 }
972
973 ret = hns_roce_init_mr_table(hr_dev);
974 if (ret) {
975 dev_err(dev, "Failed to init memory region table.\n");
976 goto err_pd_table_free;
977 }
978
979 ret = hns_roce_init_cq_table(hr_dev);
980 if (ret) {
981 dev_err(dev, "Failed to init completion queue table.\n");
982 goto err_mr_table_free;
983 }
984
985 ret = hns_roce_init_qp_table(hr_dev);
986 if (ret) {
987 dev_err(dev, "Failed to init queue pair table.\n");
988 goto err_cq_table_free;
989 }
990
991 return 0;
992
993err_cq_table_free:
994 hns_roce_cleanup_cq_table(hr_dev);
995
996err_mr_table_free:
997 hns_roce_cleanup_mr_table(hr_dev);
998
999err_pd_table_free:
1000 hns_roce_cleanup_pd_table(hr_dev);
1001
1002err_uar_alloc_free:
1003 hns_roce_uar_free(hr_dev, &hr_dev->priv_uar);
1004
1005err_uar_table_free:
1006 hns_roce_cleanup_uar_table(hr_dev);
1007 return ret;
1008}
1009
1010
1011
1012
1013
1014
1015
1016static int hns_roce_probe(struct platform_device *pdev)
1017{
1018 int ret;
1019 struct hns_roce_dev *hr_dev;
1020 struct device *dev = &pdev->dev;
1021
1022 hr_dev = (struct hns_roce_dev *)ib_alloc_device(sizeof(*hr_dev));
1023 if (!hr_dev)
1024 return -ENOMEM;
1025
1026 memset((u8 *)hr_dev + sizeof(struct ib_device), 0,
1027 sizeof(struct hns_roce_dev) - sizeof(struct ib_device));
1028
1029 hr_dev->pdev = pdev;
1030 platform_set_drvdata(pdev, hr_dev);
1031
1032 if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL)) &&
1033 dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) {
1034 dev_err(dev, "Not usable DMA addressing mode\n");
1035 ret = -EIO;
1036 goto error_failed_get_cfg;
1037 }
1038
1039 ret = hns_roce_get_cfg(hr_dev);
1040 if (ret) {
1041 dev_err(dev, "Get Configuration failed!\n");
1042 goto error_failed_get_cfg;
1043 }
1044
1045 ret = hr_dev->hw->reset(hr_dev, true);
1046 if (ret) {
1047 dev_err(dev, "Reset RoCE engine failed!\n");
1048 goto error_failed_get_cfg;
1049 }
1050
1051 hr_dev->hw->hw_profile(hr_dev);
1052
1053 ret = hns_roce_cmd_init(hr_dev);
1054 if (ret) {
1055 dev_err(dev, "cmd init failed!\n");
1056 goto error_failed_cmd_init;
1057 }
1058
1059 ret = hns_roce_init_eq_table(hr_dev);
1060 if (ret) {
1061 dev_err(dev, "eq init failed!\n");
1062 goto error_failed_eq_table;
1063 }
1064
1065 if (hr_dev->cmd_mod) {
1066 ret = hns_roce_cmd_use_events(hr_dev);
1067 if (ret) {
1068 dev_err(dev, "Switch to event-driven cmd failed!\n");
1069 goto error_failed_use_event;
1070 }
1071 }
1072
1073 ret = hns_roce_init_hem(hr_dev);
1074 if (ret) {
1075 dev_err(dev, "init HEM(Hardware Entry Memory) failed!\n");
1076 goto error_failed_init_hem;
1077 }
1078
1079 ret = hns_roce_setup_hca(hr_dev);
1080 if (ret) {
1081 dev_err(dev, "setup hca failed!\n");
1082 goto error_failed_setup_hca;
1083 }
1084
1085 ret = hr_dev->hw->hw_init(hr_dev);
1086 if (ret) {
1087 dev_err(dev, "hw_init failed!\n");
1088 goto error_failed_engine_init;
1089 }
1090
1091 ret = hns_roce_register_device(hr_dev);
1092 if (ret)
1093 goto error_failed_register_device;
1094
1095 return 0;
1096
1097error_failed_register_device:
1098 hr_dev->hw->hw_exit(hr_dev);
1099
1100error_failed_engine_init:
1101 hns_roce_cleanup_bitmap(hr_dev);
1102
1103error_failed_setup_hca:
1104 hns_roce_cleanup_hem(hr_dev);
1105
1106error_failed_init_hem:
1107 if (hr_dev->cmd_mod)
1108 hns_roce_cmd_use_polling(hr_dev);
1109
1110error_failed_use_event:
1111 hns_roce_cleanup_eq_table(hr_dev);
1112
1113error_failed_eq_table:
1114 hns_roce_cmd_cleanup(hr_dev);
1115
1116error_failed_cmd_init:
1117 ret = hr_dev->hw->reset(hr_dev, false);
1118 if (ret)
1119 dev_err(&hr_dev->pdev->dev, "roce_engine reset fail\n");
1120
1121error_failed_get_cfg:
1122 ib_dealloc_device(&hr_dev->ib_dev);
1123
1124 return ret;
1125}
1126
1127
1128
1129
1130
1131static int hns_roce_remove(struct platform_device *pdev)
1132{
1133 struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev);
1134
1135 hns_roce_unregister_device(hr_dev);
1136 hr_dev->hw->hw_exit(hr_dev);
1137 hns_roce_cleanup_bitmap(hr_dev);
1138 hns_roce_cleanup_hem(hr_dev);
1139
1140 if (hr_dev->cmd_mod)
1141 hns_roce_cmd_use_polling(hr_dev);
1142
1143 hns_roce_cleanup_eq_table(hr_dev);
1144 hns_roce_cmd_cleanup(hr_dev);
1145 hr_dev->hw->reset(hr_dev, false);
1146
1147 ib_dealloc_device(&hr_dev->ib_dev);
1148
1149 return 0;
1150}
1151
1152static struct platform_driver hns_roce_driver = {
1153 .probe = hns_roce_probe,
1154 .remove = hns_roce_remove,
1155 .driver = {
1156 .name = DRV_NAME,
1157 .of_match_table = hns_roce_of_match,
1158 .acpi_match_table = ACPI_PTR(hns_roce_acpi_match),
1159 },
1160};
1161
1162module_platform_driver(hns_roce_driver);
1163
1164MODULE_LICENSE("Dual BSD/GPL");
1165MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");
1166MODULE_AUTHOR("Nenglong Zhao <zhaonenglong@hisilicon.com>");
1167MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>");
1168MODULE_DESCRIPTION("HNS RoCE Driver");
1169
