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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 <rdma/ib_cache.h>
39#include "hns_roce_common.h"
40#include "hns_roce_device.h"
41#include <rdma/hns-abi.h>
42#include "hns_roce_hem.h"
43
44
45
46
47
48
49
50
51
52
53
54
55int hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index)
56{
57 return gid_index * hr_dev->caps.num_ports + port;
58}
59
60static void hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
61{
62 u8 phy_port;
63 u32 i = 0;
64
65 if (!memcmp(hr_dev->dev_addr[port], addr, MAC_ADDR_OCTET_NUM))
66 return;
67
68 for (i = 0; i < MAC_ADDR_OCTET_NUM; i++)
69 hr_dev->dev_addr[port][i] = addr[i];
70
71 phy_port = hr_dev->iboe.phy_port[port];
72 hr_dev->hw->set_mac(hr_dev, phy_port, addr);
73}
74
75static int hns_roce_add_gid(struct ib_device *device, u8 port_num,
76 unsigned int index, const union ib_gid *gid,
77 const struct ib_gid_attr *attr, void **context)
78{
79 struct hns_roce_dev *hr_dev = to_hr_dev(device);
80 u8 port = port_num - 1;
81 unsigned long flags;
82
83 if (port >= hr_dev->caps.num_ports)
84 return -EINVAL;
85
86 spin_lock_irqsave(&hr_dev->iboe.lock, flags);
87
88 hr_dev->hw->set_gid(hr_dev, port, index, (union ib_gid *)gid);
89
90 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
91
92 return 0;
93}
94
95static int hns_roce_del_gid(struct ib_device *device, u8 port_num,
96 unsigned int index, void **context)
97{
98 struct hns_roce_dev *hr_dev = to_hr_dev(device);
99 union ib_gid zgid = { {0} };
100 u8 port = port_num - 1;
101 unsigned long flags;
102
103 if (port >= hr_dev->caps.num_ports)
104 return -EINVAL;
105
106 spin_lock_irqsave(&hr_dev->iboe.lock, flags);
107
108 hr_dev->hw->set_gid(hr_dev, port, index, &zgid);
109
110 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
111
112 return 0;
113}
114
115static int handle_en_event(struct hns_roce_dev *hr_dev, u8 port,
116 unsigned long event)
117{
118 struct device *dev = &hr_dev->pdev->dev;
119 struct net_device *netdev;
120
121 netdev = hr_dev->iboe.netdevs[port];
122 if (!netdev) {
123 dev_err(dev, "port(%d) can't find netdev\n", port);
124 return -ENODEV;
125 }
126
127 spin_lock_bh(&hr_dev->iboe.lock);
128
129 switch (event) {
130 case NETDEV_UP:
131 case NETDEV_CHANGE:
132 case NETDEV_REGISTER:
133 case NETDEV_CHANGEADDR:
134 hns_roce_set_mac(hr_dev, port, netdev->dev_addr);
135 break;
136 case NETDEV_DOWN:
137
138
139
140 break;
141 default:
142 dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(event));
143 break;
144 }
145
146 spin_unlock_bh(&hr_dev->iboe.lock);
147 return 0;
148}
149
150static int hns_roce_netdev_event(struct notifier_block *self,
151 unsigned long event, void *ptr)
152{
153 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
154 struct hns_roce_ib_iboe *iboe = NULL;
155 struct hns_roce_dev *hr_dev = NULL;
156 u8 port = 0;
157 int ret = 0;
158
159 hr_dev = container_of(self, struct hns_roce_dev, iboe.nb);
160 iboe = &hr_dev->iboe;
161
162 for (port = 0; port < hr_dev->caps.num_ports; port++) {
163 if (dev == iboe->netdevs[port]) {
164 ret = handle_en_event(hr_dev, port, event);
165 if (ret)
166 return NOTIFY_DONE;
167 break;
168 }
169 }
170
171 return NOTIFY_DONE;
172}
173
174static int hns_roce_setup_mtu_mac(struct hns_roce_dev *hr_dev)
175{
176 u8 i;
177
178 for (i = 0; i < hr_dev->caps.num_ports; i++) {
179 hr_dev->hw->set_mtu(hr_dev, hr_dev->iboe.phy_port[i],
180 hr_dev->caps.max_mtu);
181 hns_roce_set_mac(hr_dev, i, hr_dev->iboe.netdevs[i]->dev_addr);
182 }
183
184 return 0;
185}
186
187static int hns_roce_query_device(struct ib_device *ib_dev,
188 struct ib_device_attr *props,
189 struct ib_udata *uhw)
190{
191 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
192
193 memset(props, 0, sizeof(*props));
194
195 props->sys_image_guid = hr_dev->sys_image_guid;
196 props->max_mr_size = (u64)(~(0ULL));
197 props->page_size_cap = hr_dev->caps.page_size_cap;
198 props->vendor_id = hr_dev->vendor_id;
199 props->vendor_part_id = hr_dev->vendor_part_id;
200 props->hw_ver = hr_dev->hw_rev;
201 props->max_qp = hr_dev->caps.num_qps;
202 props->max_qp_wr = hr_dev->caps.max_wqes;
203 props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
204 IB_DEVICE_RC_RNR_NAK_GEN;
205 props->max_sge = hr_dev->caps.max_sq_sg;
206 props->max_sge_rd = 1;
207 props->max_cq = hr_dev->caps.num_cqs;
208 props->max_cqe = hr_dev->caps.max_cqes;
209 props->max_mr = hr_dev->caps.num_mtpts;
210 props->max_pd = hr_dev->caps.num_pds;
211 props->max_qp_rd_atom = hr_dev->caps.max_qp_dest_rdma;
212 props->max_qp_init_rd_atom = hr_dev->caps.max_qp_init_rdma;
213 props->atomic_cap = IB_ATOMIC_NONE;
214 props->max_pkeys = 1;
215 props->local_ca_ack_delay = hr_dev->caps.local_ca_ack_delay;
216
217 return 0;
218}
219
220static struct net_device *hns_roce_get_netdev(struct ib_device *ib_dev,
221 u8 port_num)
222{
223 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
224 struct net_device *ndev;
225
226 if (port_num < 1 || port_num > hr_dev->caps.num_ports)
227 return NULL;
228
229 rcu_read_lock();
230
231 ndev = hr_dev->iboe.netdevs[port_num - 1];
232 if (ndev)
233 dev_hold(ndev);
234
235 rcu_read_unlock();
236 return ndev;
237}
238
239static int hns_roce_query_port(struct ib_device *ib_dev, u8 port_num,
240 struct ib_port_attr *props)
241{
242 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
243 struct device *dev = &hr_dev->pdev->dev;
244 struct net_device *net_dev;
245 unsigned long flags;
246 enum ib_mtu mtu;
247 u8 port;
248
249 assert(port_num > 0);
250 port = port_num - 1;
251
252 memset(props, 0, sizeof(*props));
253
254 props->max_mtu = hr_dev->caps.max_mtu;
255 props->gid_tbl_len = hr_dev->caps.gid_table_len[port];
256 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
257 IB_PORT_VENDOR_CLASS_SUP |
258 IB_PORT_BOOT_MGMT_SUP;
259 props->max_msg_sz = HNS_ROCE_MAX_MSG_LEN;
260 props->pkey_tbl_len = 1;
261 props->active_width = IB_WIDTH_4X;
262 props->active_speed = 1;
263
264 spin_lock_irqsave(&hr_dev->iboe.lock, flags);
265
266 net_dev = hr_dev->iboe.netdevs[port];
267 if (!net_dev) {
268 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
269 dev_err(dev, "find netdev %d failed!\r\n", port);
270 return -EINVAL;
271 }
272
273 mtu = iboe_get_mtu(net_dev->mtu);
274 props->active_mtu = mtu ? min(props->max_mtu, mtu) : IB_MTU_256;
275 props->state = (netif_running(net_dev) && netif_carrier_ok(net_dev)) ?
276 IB_PORT_ACTIVE : IB_PORT_DOWN;
277 props->phys_state = (props->state == IB_PORT_ACTIVE) ? 5 : 3;
278
279 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
280
281 return 0;
282}
283
284static enum rdma_link_layer hns_roce_get_link_layer(struct ib_device *device,
285 u8 port_num)
286{
287 return IB_LINK_LAYER_ETHERNET;
288}
289
290static int hns_roce_query_gid(struct ib_device *ib_dev, u8 port_num, int index,
291 union ib_gid *gid)
292{
293 return 0;
294}
295
296static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index,
297 u16 *pkey)
298{
299 *pkey = PKEY_ID;
300
301 return 0;
302}
303
304static int hns_roce_modify_device(struct ib_device *ib_dev, int mask,
305 struct ib_device_modify *props)
306{
307 unsigned long flags;
308
309 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
310 return -EOPNOTSUPP;
311
312 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
313 spin_lock_irqsave(&to_hr_dev(ib_dev)->sm_lock, flags);
314 memcpy(ib_dev->node_desc, props->node_desc, NODE_DESC_SIZE);
315 spin_unlock_irqrestore(&to_hr_dev(ib_dev)->sm_lock, flags);
316 }
317
318 return 0;
319}
320
321static int hns_roce_modify_port(struct ib_device *ib_dev, u8 port_num, int mask,
322 struct ib_port_modify *props)
323{
324 return 0;
325}
326
327static struct ib_ucontext *hns_roce_alloc_ucontext(struct ib_device *ib_dev,
328 struct ib_udata *udata)
329{
330 int ret = 0;
331 struct hns_roce_ucontext *context;
332 struct hns_roce_ib_alloc_ucontext_resp resp;
333 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
334
335 resp.qp_tab_size = hr_dev->caps.num_qps;
336
337 context = kmalloc(sizeof(*context), GFP_KERNEL);
338 if (!context)
339 return ERR_PTR(-ENOMEM);
340
341 ret = hns_roce_uar_alloc(hr_dev, &context->uar);
342 if (ret)
343 goto error_fail_uar_alloc;
344
345 ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
346 if (ret)
347 goto error_fail_copy_to_udata;
348
349 return &context->ibucontext;
350
351error_fail_copy_to_udata:
352 hns_roce_uar_free(hr_dev, &context->uar);
353
354error_fail_uar_alloc:
355 kfree(context);
356
357 return ERR_PTR(ret);
358}
359
360static int hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext)
361{
362 struct hns_roce_ucontext *context = to_hr_ucontext(ibcontext);
363
364 hns_roce_uar_free(to_hr_dev(ibcontext->device), &context->uar);
365 kfree(context);
366
367 return 0;
368}
369
370static int hns_roce_mmap(struct ib_ucontext *context,
371 struct vm_area_struct *vma)
372{
373 struct hns_roce_dev *hr_dev = to_hr_dev(context->device);
374
375 if (((vma->vm_end - vma->vm_start) % PAGE_SIZE) != 0)
376 return -EINVAL;
377
378 if (vma->vm_pgoff == 0) {
379 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
380 if (io_remap_pfn_range(vma, vma->vm_start,
381 to_hr_ucontext(context)->uar.pfn,
382 PAGE_SIZE, vma->vm_page_prot))
383 return -EAGAIN;
384 } else if (vma->vm_pgoff == 1 && hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
385
386 if (io_remap_pfn_range(vma, vma->vm_start,
387 hr_dev->tptr_dma_addr >> PAGE_SHIFT,
388 hr_dev->tptr_size,
389 vma->vm_page_prot))
390 return -EAGAIN;
391 } else
392 return -EINVAL;
393
394 return 0;
395}
396
397static int hns_roce_port_immutable(struct ib_device *ib_dev, u8 port_num,
398 struct ib_port_immutable *immutable)
399{
400 struct ib_port_attr attr;
401 int ret;
402
403 ret = hns_roce_query_port(ib_dev, port_num, &attr);
404 if (ret)
405 return ret;
406
407 immutable->pkey_tbl_len = attr.pkey_tbl_len;
408 immutable->gid_tbl_len = attr.gid_tbl_len;
409
410 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
411 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
412
413 return 0;
414}
415
416static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
417{
418 struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;
419
420 unregister_inetaddr_notifier(&iboe->nb_inet);
421 unregister_netdevice_notifier(&iboe->nb);
422 ib_unregister_device(&hr_dev->ib_dev);
423}
424
425static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
426{
427 int ret;
428 struct hns_roce_ib_iboe *iboe = NULL;
429 struct ib_device *ib_dev = NULL;
430 struct device *dev = &hr_dev->pdev->dev;
431
432 iboe = &hr_dev->iboe;
433 spin_lock_init(&iboe->lock);
434
435 ib_dev = &hr_dev->ib_dev;
436 strlcpy(ib_dev->name, "hns_%d", IB_DEVICE_NAME_MAX);
437
438 ib_dev->owner = THIS_MODULE;
439 ib_dev->node_type = RDMA_NODE_IB_CA;
440 ib_dev->dma_device = dev;
441
442 ib_dev->phys_port_cnt = hr_dev->caps.num_ports;
443 ib_dev->local_dma_lkey = hr_dev->caps.reserved_lkey;
444 ib_dev->num_comp_vectors = hr_dev->caps.num_comp_vectors;
445 ib_dev->uverbs_abi_ver = 1;
446 ib_dev->uverbs_cmd_mask =
447 (1ULL << IB_USER_VERBS_CMD_GET_CONTEXT) |
448 (1ULL << IB_USER_VERBS_CMD_QUERY_DEVICE) |
449 (1ULL << IB_USER_VERBS_CMD_QUERY_PORT) |
450 (1ULL << IB_USER_VERBS_CMD_ALLOC_PD) |
451 (1ULL << IB_USER_VERBS_CMD_DEALLOC_PD) |
452 (1ULL << IB_USER_VERBS_CMD_REG_MR) |
453 (1ULL << IB_USER_VERBS_CMD_DEREG_MR) |
454 (1ULL << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
455 (1ULL << IB_USER_VERBS_CMD_CREATE_CQ) |
456 (1ULL << IB_USER_VERBS_CMD_DESTROY_CQ) |
457 (1ULL << IB_USER_VERBS_CMD_CREATE_QP) |
458 (1ULL << IB_USER_VERBS_CMD_MODIFY_QP) |
459 (1ULL << IB_USER_VERBS_CMD_QUERY_QP) |
460 (1ULL << IB_USER_VERBS_CMD_DESTROY_QP);
461
462
463 ib_dev->modify_device = hns_roce_modify_device;
464 ib_dev->query_device = hns_roce_query_device;
465 ib_dev->query_port = hns_roce_query_port;
466 ib_dev->modify_port = hns_roce_modify_port;
467 ib_dev->get_link_layer = hns_roce_get_link_layer;
468 ib_dev->get_netdev = hns_roce_get_netdev;
469 ib_dev->query_gid = hns_roce_query_gid;
470 ib_dev->add_gid = hns_roce_add_gid;
471 ib_dev->del_gid = hns_roce_del_gid;
472 ib_dev->query_pkey = hns_roce_query_pkey;
473 ib_dev->alloc_ucontext = hns_roce_alloc_ucontext;
474 ib_dev->dealloc_ucontext = hns_roce_dealloc_ucontext;
475 ib_dev->mmap = hns_roce_mmap;
476
477
478 ib_dev->alloc_pd = hns_roce_alloc_pd;
479 ib_dev->dealloc_pd = hns_roce_dealloc_pd;
480
481
482 ib_dev->create_ah = hns_roce_create_ah;
483 ib_dev->query_ah = hns_roce_query_ah;
484 ib_dev->destroy_ah = hns_roce_destroy_ah;
485
486
487 ib_dev->create_qp = hns_roce_create_qp;
488 ib_dev->modify_qp = hns_roce_modify_qp;
489 ib_dev->query_qp = hr_dev->hw->query_qp;
490 ib_dev->destroy_qp = hr_dev->hw->destroy_qp;
491 ib_dev->post_send = hr_dev->hw->post_send;
492 ib_dev->post_recv = hr_dev->hw->post_recv;
493
494
495 ib_dev->create_cq = hns_roce_ib_create_cq;
496 ib_dev->destroy_cq = hns_roce_ib_destroy_cq;
497 ib_dev->req_notify_cq = hr_dev->hw->req_notify_cq;
498 ib_dev->poll_cq = hr_dev->hw->poll_cq;
499
500
501 ib_dev->get_dma_mr = hns_roce_get_dma_mr;
502 ib_dev->reg_user_mr = hns_roce_reg_user_mr;
503 ib_dev->dereg_mr = hns_roce_dereg_mr;
504
505
506 ib_dev->get_port_immutable = hns_roce_port_immutable;
507
508 ret = ib_register_device(ib_dev, NULL);
509 if (ret) {
510 dev_err(dev, "ib_register_device failed!\n");
511 return ret;
512 }
513
514 ret = hns_roce_setup_mtu_mac(hr_dev);
515 if (ret) {
516 dev_err(dev, "setup_mtu_mac failed!\n");
517 goto error_failed_setup_mtu_mac;
518 }
519
520 iboe->nb.notifier_call = hns_roce_netdev_event;
521 ret = register_netdevice_notifier(&iboe->nb);
522 if (ret) {
523 dev_err(dev, "register_netdevice_notifier failed!\n");
524 goto error_failed_setup_mtu_mac;
525 }
526
527 return 0;
528
529error_failed_setup_mtu_mac:
530 ib_unregister_device(ib_dev);
531
532 return ret;
533}
534
535static const struct of_device_id hns_roce_of_match[] = {
536 { .compatible = "hisilicon,hns-roce-v1", .data = &hns_roce_hw_v1, },
537 {},
538};
539MODULE_DEVICE_TABLE(of, hns_roce_of_match);
540
541static const struct acpi_device_id hns_roce_acpi_match[] = {
542 { "HISI00D1", (kernel_ulong_t)&hns_roce_hw_v1 },
543 {},
544};
545MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);
546
547static int hns_roce_node_match(struct device *dev, void *fwnode)
548{
549 return dev->fwnode == fwnode;
550}
551
552static struct
553platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode)
554{
555 struct device *dev;
556
557
558 dev = bus_find_device(&platform_bus_type, NULL,
559 fwnode, hns_roce_node_match);
560
561 return dev ? to_platform_device(dev) : NULL;
562}
563
564static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev)
565{
566 int i;
567 int ret;
568 u8 phy_port;
569 int port_cnt = 0;
570 struct device *dev = &hr_dev->pdev->dev;
571 struct device_node *net_node;
572 struct net_device *netdev = NULL;
573 struct platform_device *pdev = NULL;
574 struct resource *res;
575
576
577 if (dev_of_node(dev)) {
578 const struct of_device_id *of_id;
579
580 of_id = of_match_node(hns_roce_of_match, dev->of_node);
581 if (!of_id) {
582 dev_err(dev, "device is not compatible!\n");
583 return -ENXIO;
584 }
585 hr_dev->hw = (struct hns_roce_hw *)of_id->data;
586 if (!hr_dev->hw) {
587 dev_err(dev, "couldn't get H/W specific DT data!\n");
588 return -ENXIO;
589 }
590 } else if (is_acpi_device_node(dev->fwnode)) {
591 const struct acpi_device_id *acpi_id;
592
593 acpi_id = acpi_match_device(hns_roce_acpi_match, dev);
594 if (!acpi_id) {
595 dev_err(dev, "device is not compatible!\n");
596 return -ENXIO;
597 }
598 hr_dev->hw = (struct hns_roce_hw *) acpi_id->driver_data;
599 if (!hr_dev->hw) {
600 dev_err(dev, "couldn't get H/W specific ACPI data!\n");
601 return -ENXIO;
602 }
603 } else {
604 dev_err(dev, "can't read compatibility data from DT or ACPI\n");
605 return -ENXIO;
606 }
607
608
609 res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0);
610 if (!res) {
611 dev_err(dev, "memory resource not found!\n");
612 return -EINVAL;
613 }
614 hr_dev->reg_base = devm_ioremap_resource(dev, res);
615 if (IS_ERR(hr_dev->reg_base))
616 return PTR_ERR(hr_dev->reg_base);
617
618
619 ret = device_property_read_u8_array(dev, "node-guid",
620 (u8 *)&hr_dev->ib_dev.node_guid,
621 GUID_LEN);
622 if (ret) {
623 dev_err(dev, "couldn't get node_guid from DT or ACPI!\n");
624 return ret;
625 }
626
627
628 for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) {
629 if (dev_of_node(dev)) {
630 net_node = of_parse_phandle(dev->of_node, "eth-handle",
631 i);
632 if (!net_node)
633 continue;
634 pdev = of_find_device_by_node(net_node);
635 } else if (is_acpi_device_node(dev->fwnode)) {
636 struct acpi_reference_args args;
637 struct fwnode_handle *fwnode;
638
639 ret = acpi_node_get_property_reference(dev->fwnode,
640 "eth-handle",
641 i, &args);
642 if (ret)
643 continue;
644 fwnode = acpi_fwnode_handle(args.adev);
645 pdev = hns_roce_find_pdev(fwnode);
646 } else {
647 dev_err(dev, "cannot read data from DT or ACPI\n");
648 return -ENXIO;
649 }
650
651 if (pdev) {
652 netdev = platform_get_drvdata(pdev);
653 phy_port = (u8)i;
654 if (netdev) {
655 hr_dev->iboe.netdevs[port_cnt] = netdev;
656 hr_dev->iboe.phy_port[port_cnt] = phy_port;
657 } else {
658 dev_err(dev, "no netdev found with pdev %s\n",
659 pdev->name);
660 return -ENODEV;
661 }
662 port_cnt++;
663 }
664 }
665
666 if (port_cnt == 0) {
667 dev_err(dev, "unable to get eth-handle for available ports!\n");
668 return -EINVAL;
669 }
670
671 hr_dev->caps.num_ports = port_cnt;
672
673
674 hr_dev->cmd_mod = 1;
675 hr_dev->loop_idc = 0;
676
677
678 ret = device_property_read_string_array(dev, "interrupt-names",
679 hr_dev->irq_names,
680 HNS_ROCE_MAX_IRQ_NUM);
681 if (ret < 0) {
682 dev_err(dev, "couldn't get interrupt names from DT or ACPI!\n");
683 return ret;
684 }
685
686
687 for (i = 0; i < HNS_ROCE_MAX_IRQ_NUM; i++) {
688 hr_dev->irq[i] = platform_get_irq(hr_dev->pdev, i);
689 if (hr_dev->irq[i] <= 0) {
690 dev_err(dev, "platform get of irq[=%d] failed!\n", i);
691 return -EINVAL;
692 }
693 }
694
695 return 0;
696}
697
698static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
699{
700 int ret;
701 struct device *dev = &hr_dev->pdev->dev;
702
703 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtt_table,
704 HEM_TYPE_MTT, hr_dev->caps.mtt_entry_sz,
705 hr_dev->caps.num_mtt_segs, 1);
706 if (ret) {
707 dev_err(dev, "Failed to init MTT context memory, aborting.\n");
708 return ret;
709 }
710
711 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table,
712 HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz,
713 hr_dev->caps.num_mtpts, 1);
714 if (ret) {
715 dev_err(dev, "Failed to init MTPT context memory, aborting.\n");
716 goto err_unmap_mtt;
717 }
718
719 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table,
720 HEM_TYPE_QPC, hr_dev->caps.qpc_entry_sz,
721 hr_dev->caps.num_qps, 1);
722 if (ret) {
723 dev_err(dev, "Failed to init QP context memory, aborting.\n");
724 goto err_unmap_dmpt;
725 }
726
727 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.irrl_table,
728 HEM_TYPE_IRRL,
729 hr_dev->caps.irrl_entry_sz *
730 hr_dev->caps.max_qp_init_rdma,
731 hr_dev->caps.num_qps, 1);
732 if (ret) {
733 dev_err(dev, "Failed to init irrl_table memory, aborting.\n");
734 goto err_unmap_qp;
735 }
736
737 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table,
738 HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz,
739 hr_dev->caps.num_cqs, 1);
740 if (ret) {
741 dev_err(dev, "Failed to init CQ context memory, aborting.\n");
742 goto err_unmap_irrl;
743 }
744
745 return 0;
746
747err_unmap_irrl:
748 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.irrl_table);
749
750err_unmap_qp:
751 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.qp_table);
752
753err_unmap_dmpt:
754 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table);
755
756err_unmap_mtt:
757 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtt_table);
758
759 return ret;
760}
761
762
763
764
765
766
767static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev)
768{
769 int ret;
770 struct device *dev = &hr_dev->pdev->dev;
771
772 spin_lock_init(&hr_dev->sm_lock);
773 spin_lock_init(&hr_dev->bt_cmd_lock);
774
775 ret = hns_roce_init_uar_table(hr_dev);
776 if (ret) {
777 dev_err(dev, "Failed to initialize uar table. aborting\n");
778 return ret;
779 }
780
781 ret = hns_roce_uar_alloc(hr_dev, &hr_dev->priv_uar);
782 if (ret) {
783 dev_err(dev, "Failed to allocate priv_uar.\n");
784 goto err_uar_table_free;
785 }
786
787 ret = hns_roce_init_pd_table(hr_dev);
788 if (ret) {
789 dev_err(dev, "Failed to init protected domain table.\n");
790 goto err_uar_alloc_free;
791 }
792
793 ret = hns_roce_init_mr_table(hr_dev);
794 if (ret) {
795 dev_err(dev, "Failed to init memory region table.\n");
796 goto err_pd_table_free;
797 }
798
799 ret = hns_roce_init_cq_table(hr_dev);
800 if (ret) {
801 dev_err(dev, "Failed to init completion queue table.\n");
802 goto err_mr_table_free;
803 }
804
805 ret = hns_roce_init_qp_table(hr_dev);
806 if (ret) {
807 dev_err(dev, "Failed to init queue pair table.\n");
808 goto err_cq_table_free;
809 }
810
811 return 0;
812
813err_cq_table_free:
814 hns_roce_cleanup_cq_table(hr_dev);
815
816err_mr_table_free:
817 hns_roce_cleanup_mr_table(hr_dev);
818
819err_pd_table_free:
820 hns_roce_cleanup_pd_table(hr_dev);
821
822err_uar_alloc_free:
823 hns_roce_uar_free(hr_dev, &hr_dev->priv_uar);
824
825err_uar_table_free:
826 hns_roce_cleanup_uar_table(hr_dev);
827 return ret;
828}
829
830
831
832
833
834
835
836static int hns_roce_probe(struct platform_device *pdev)
837{
838 int ret;
839 struct hns_roce_dev *hr_dev;
840 struct device *dev = &pdev->dev;
841
842 hr_dev = (struct hns_roce_dev *)ib_alloc_device(sizeof(*hr_dev));
843 if (!hr_dev)
844 return -ENOMEM;
845
846 hr_dev->pdev = pdev;
847 platform_set_drvdata(pdev, hr_dev);
848
849 if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL)) &&
850 dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) {
851 dev_err(dev, "Not usable DMA addressing mode\n");
852 ret = -EIO;
853 goto error_failed_get_cfg;
854 }
855
856 ret = hns_roce_get_cfg(hr_dev);
857 if (ret) {
858 dev_err(dev, "Get Configuration failed!\n");
859 goto error_failed_get_cfg;
860 }
861
862 ret = hr_dev->hw->reset(hr_dev, true);
863 if (ret) {
864 dev_err(dev, "Reset RoCE engine failed!\n");
865 goto error_failed_get_cfg;
866 }
867
868 hr_dev->hw->hw_profile(hr_dev);
869
870 ret = hns_roce_cmd_init(hr_dev);
871 if (ret) {
872 dev_err(dev, "cmd init failed!\n");
873 goto error_failed_cmd_init;
874 }
875
876 ret = hns_roce_init_eq_table(hr_dev);
877 if (ret) {
878 dev_err(dev, "eq init failed!\n");
879 goto error_failed_eq_table;
880 }
881
882 if (hr_dev->cmd_mod) {
883 ret = hns_roce_cmd_use_events(hr_dev);
884 if (ret) {
885 dev_err(dev, "Switch to event-driven cmd failed!\n");
886 goto error_failed_use_event;
887 }
888 }
889
890 ret = hns_roce_init_hem(hr_dev);
891 if (ret) {
892 dev_err(dev, "init HEM(Hardware Entry Memory) failed!\n");
893 goto error_failed_init_hem;
894 }
895
896 ret = hns_roce_setup_hca(hr_dev);
897 if (ret) {
898 dev_err(dev, "setup hca failed!\n");
899 goto error_failed_setup_hca;
900 }
901
902 ret = hr_dev->hw->hw_init(hr_dev);
903 if (ret) {
904 dev_err(dev, "hw_init failed!\n");
905 goto error_failed_engine_init;
906 }
907
908 ret = hns_roce_register_device(hr_dev);
909 if (ret)
910 goto error_failed_register_device;
911
912 return 0;
913
914error_failed_register_device:
915 hr_dev->hw->hw_exit(hr_dev);
916
917error_failed_engine_init:
918 hns_roce_cleanup_bitmap(hr_dev);
919
920error_failed_setup_hca:
921 hns_roce_cleanup_hem(hr_dev);
922
923error_failed_init_hem:
924 if (hr_dev->cmd_mod)
925 hns_roce_cmd_use_polling(hr_dev);
926
927error_failed_use_event:
928 hns_roce_cleanup_eq_table(hr_dev);
929
930error_failed_eq_table:
931 hns_roce_cmd_cleanup(hr_dev);
932
933error_failed_cmd_init:
934 ret = hr_dev->hw->reset(hr_dev, false);
935 if (ret)
936 dev_err(&hr_dev->pdev->dev, "roce_engine reset fail\n");
937
938error_failed_get_cfg:
939 ib_dealloc_device(&hr_dev->ib_dev);
940
941 return ret;
942}
943
944
945
946
947
948static int hns_roce_remove(struct platform_device *pdev)
949{
950 struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev);
951
952 hns_roce_unregister_device(hr_dev);
953 hr_dev->hw->hw_exit(hr_dev);
954 hns_roce_cleanup_bitmap(hr_dev);
955 hns_roce_cleanup_hem(hr_dev);
956
957 if (hr_dev->cmd_mod)
958 hns_roce_cmd_use_polling(hr_dev);
959
960 hns_roce_cleanup_eq_table(hr_dev);
961 hns_roce_cmd_cleanup(hr_dev);
962 hr_dev->hw->reset(hr_dev, false);
963
964 ib_dealloc_device(&hr_dev->ib_dev);
965
966 return 0;
967}
968
969static struct platform_driver hns_roce_driver = {
970 .probe = hns_roce_probe,
971 .remove = hns_roce_remove,
972 .driver = {
973 .name = DRV_NAME,
974 .of_match_table = hns_roce_of_match,
975 .acpi_match_table = ACPI_PTR(hns_roce_acpi_match),
976 },
977};
978
979module_platform_driver(hns_roce_driver);
980
981MODULE_LICENSE("Dual BSD/GPL");
982MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");
983MODULE_AUTHOR("Nenglong Zhao <zhaonenglong@hisilicon.com>");
984MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>");
985MODULE_DESCRIPTION("HNS RoCE Driver");
986
