1 /*
2 * Copyright (c) 2016 Hisilicon Limited.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33 #include <linux/acpi.h>
34 #include <linux/of_platform.h>
35 #include <linux/module.h>
36 #include <rdma/ib_addr.h>
37 #include <rdma/ib_smi.h>
38 #include <rdma/ib_user_verbs.h>
39 #include <rdma/ib_cache.h>
40 #include "hns_roce_common.h"
41 #include "hns_roce_device.h"
42 #include <rdma/hns-abi.h>
43 #include "hns_roce_hem.h"
44
45 /**
46 * hns_get_gid_index - Get gid index.
47 * @hr_dev: pointer to structure hns_roce_dev.
48 * @port: port, value range: 0 ~ MAX
49 * @gid_index: gid_index, value range: 0 ~ MAX
50 * Description:
51 * N ports shared gids, allocation method as follow:
52 * GID[0][0], GID[1][0],.....GID[N - 1][0],
53 * GID[0][0], GID[1][0],.....GID[N - 1][0],
54 * And so on
55 */
hns_get_gid_index(struct hns_roce_dev * hr_dev,u8 port,int gid_index)56 int hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index)
57 {
58 return gid_index * hr_dev->caps.num_ports + port;
59 }
60
hns_roce_set_mac(struct hns_roce_dev * hr_dev,u8 port,u8 * addr)61 static int hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
62 {
63 u8 phy_port;
64 u32 i = 0;
65
66 if (!memcmp(hr_dev->dev_addr[port], addr, ETH_ALEN))
67 return 0;
68
69 for (i = 0; i < ETH_ALEN; i++)
70 hr_dev->dev_addr[port][i] = addr[i];
71
72 phy_port = hr_dev->iboe.phy_port[port];
73 return hr_dev->hw->set_mac(hr_dev, phy_port, addr);
74 }
75
hns_roce_add_gid(const struct ib_gid_attr * attr,void ** context)76 static int hns_roce_add_gid(const struct ib_gid_attr *attr, void **context)
77 {
78 struct hns_roce_dev *hr_dev = to_hr_dev(attr->device);
79 u8 port = attr->port_num - 1;
80 int ret;
81
82 if (port >= hr_dev->caps.num_ports)
83 return -EINVAL;
84
85 ret = hr_dev->hw->set_gid(hr_dev, port, attr->index, &attr->gid, attr);
86
87 return ret;
88 }
89
hns_roce_del_gid(const struct ib_gid_attr * attr,void ** context)90 static int hns_roce_del_gid(const struct ib_gid_attr *attr, void **context)
91 {
92 struct hns_roce_dev *hr_dev = to_hr_dev(attr->device);
93 struct ib_gid_attr zattr = {};
94 u8 port = attr->port_num - 1;
95 int ret;
96
97 if (port >= hr_dev->caps.num_ports)
98 return -EINVAL;
99
100 ret = hr_dev->hw->set_gid(hr_dev, port, attr->index, &zgid, &zattr);
101
102 return ret;
103 }
104
handle_en_event(struct hns_roce_dev * hr_dev,u8 port,unsigned long event)105 static int handle_en_event(struct hns_roce_dev *hr_dev, u8 port,
106 unsigned long event)
107 {
108 struct device *dev = hr_dev->dev;
109 struct net_device *netdev;
110 int ret = 0;
111
112 netdev = hr_dev->iboe.netdevs[port];
113 if (!netdev) {
114 dev_err(dev, "Can't find netdev on port(%u)!\n", port);
115 return -ENODEV;
116 }
117
118 switch (event) {
119 case NETDEV_UP:
120 case NETDEV_CHANGE:
121 case NETDEV_REGISTER:
122 case NETDEV_CHANGEADDR:
123 ret = hns_roce_set_mac(hr_dev, port, netdev->dev_addr);
124 break;
125 case NETDEV_DOWN:
126 /*
127 * In v1 engine, only support all ports closed together.
128 */
129 break;
130 default:
131 dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(event));
132 break;
133 }
134
135 return ret;
136 }
137
hns_roce_netdev_event(struct notifier_block * self,unsigned long event,void * ptr)138 static int hns_roce_netdev_event(struct notifier_block *self,
139 unsigned long event, void *ptr)
140 {
141 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
142 struct hns_roce_ib_iboe *iboe = NULL;
143 struct hns_roce_dev *hr_dev = NULL;
144 int ret;
145 u8 port;
146
147 hr_dev = container_of(self, struct hns_roce_dev, iboe.nb);
148 iboe = &hr_dev->iboe;
149
150 for (port = 0; port < hr_dev->caps.num_ports; port++) {
151 if (dev == iboe->netdevs[port]) {
152 ret = handle_en_event(hr_dev, port, event);
153 if (ret)
154 return NOTIFY_DONE;
155 break;
156 }
157 }
158
159 return NOTIFY_DONE;
160 }
161
hns_roce_setup_mtu_mac(struct hns_roce_dev * hr_dev)162 static int hns_roce_setup_mtu_mac(struct hns_roce_dev *hr_dev)
163 {
164 int ret;
165 u8 i;
166
167 for (i = 0; i < hr_dev->caps.num_ports; i++) {
168 if (hr_dev->hw->set_mtu)
169 hr_dev->hw->set_mtu(hr_dev, hr_dev->iboe.phy_port[i],
170 hr_dev->caps.max_mtu);
171 ret = hns_roce_set_mac(hr_dev, i,
172 hr_dev->iboe.netdevs[i]->dev_addr);
173 if (ret)
174 return ret;
175 }
176
177 return 0;
178 }
179
hns_roce_query_device(struct ib_device * ib_dev,struct ib_device_attr * props,struct ib_udata * uhw)180 static int hns_roce_query_device(struct ib_device *ib_dev,
181 struct ib_device_attr *props,
182 struct ib_udata *uhw)
183 {
184 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
185
186 memset(props, 0, sizeof(*props));
187
188 props->fw_ver = hr_dev->caps.fw_ver;
189 props->sys_image_guid = cpu_to_be64(hr_dev->sys_image_guid);
190 props->max_mr_size = (u64)(~(0ULL));
191 props->page_size_cap = hr_dev->caps.page_size_cap;
192 props->vendor_id = hr_dev->vendor_id;
193 props->vendor_part_id = hr_dev->vendor_part_id;
194 props->hw_ver = hr_dev->hw_rev;
195 props->max_qp = hr_dev->caps.num_qps;
196 props->max_qp_wr = hr_dev->caps.max_wqes;
197 props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
198 IB_DEVICE_RC_RNR_NAK_GEN;
199 props->max_send_sge = hr_dev->caps.max_sq_sg;
200 props->max_recv_sge = hr_dev->caps.max_rq_sg;
201 props->max_sge_rd = 1;
202 props->max_cq = hr_dev->caps.num_cqs;
203 props->max_cqe = hr_dev->caps.max_cqes;
204 props->max_mr = hr_dev->caps.num_mtpts;
205 props->max_pd = hr_dev->caps.num_pds;
206 props->max_qp_rd_atom = hr_dev->caps.max_qp_dest_rdma;
207 props->max_qp_init_rd_atom = hr_dev->caps.max_qp_init_rdma;
208 props->atomic_cap = hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_ATOMIC ?
209 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
210 props->max_pkeys = 1;
211 props->local_ca_ack_delay = hr_dev->caps.local_ca_ack_delay;
212 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ) {
213 props->max_srq = hr_dev->caps.num_srqs;
214 props->max_srq_wr = hr_dev->caps.max_srq_wrs;
215 props->max_srq_sge = hr_dev->caps.max_srq_sges;
216 }
217
218 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_FRMR) {
219 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
220 props->max_fast_reg_page_list_len = HNS_ROCE_FRMR_MAX_PA;
221 }
222
223 return 0;
224 }
225
hns_roce_query_port(struct ib_device * ib_dev,u8 port_num,struct ib_port_attr * props)226 static int hns_roce_query_port(struct ib_device *ib_dev, u8 port_num,
227 struct ib_port_attr *props)
228 {
229 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
230 struct device *dev = hr_dev->dev;
231 struct net_device *net_dev;
232 unsigned long flags;
233 enum ib_mtu mtu;
234 u8 port;
235
236 port = port_num - 1;
237
238 /* props being zeroed by the caller, avoid zeroing it here */
239
240 props->max_mtu = hr_dev->caps.max_mtu;
241 props->gid_tbl_len = hr_dev->caps.gid_table_len[port];
242 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
243 IB_PORT_VENDOR_CLASS_SUP |
244 IB_PORT_BOOT_MGMT_SUP;
245 props->max_msg_sz = HNS_ROCE_MAX_MSG_LEN;
246 props->pkey_tbl_len = 1;
247 props->active_width = IB_WIDTH_4X;
248 props->active_speed = 1;
249
250 spin_lock_irqsave(&hr_dev->iboe.lock, flags);
251
252 net_dev = hr_dev->iboe.netdevs[port];
253 if (!net_dev) {
254 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
255 dev_err(dev, "Find netdev %u failed!\n", port);
256 return -EINVAL;
257 }
258
259 mtu = iboe_get_mtu(net_dev->mtu);
260 props->active_mtu = mtu ? min(props->max_mtu, mtu) : IB_MTU_256;
261 props->state = netif_running(net_dev) && netif_carrier_ok(net_dev) ?
262 IB_PORT_ACTIVE :
263 IB_PORT_DOWN;
264 props->phys_state = props->state == IB_PORT_ACTIVE ?
265 IB_PORT_PHYS_STATE_LINK_UP :
266 IB_PORT_PHYS_STATE_DISABLED;
267
268 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
269
270 return 0;
271 }
272
hns_roce_get_link_layer(struct ib_device * device,u8 port_num)273 static enum rdma_link_layer hns_roce_get_link_layer(struct ib_device *device,
274 u8 port_num)
275 {
276 return IB_LINK_LAYER_ETHERNET;
277 }
278
hns_roce_query_pkey(struct ib_device * ib_dev,u8 port,u16 index,u16 * pkey)279 static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index,
280 u16 *pkey)
281 {
282 *pkey = PKEY_ID;
283
284 return 0;
285 }
286
hns_roce_modify_device(struct ib_device * ib_dev,int mask,struct ib_device_modify * props)287 static int hns_roce_modify_device(struct ib_device *ib_dev, int mask,
288 struct ib_device_modify *props)
289 {
290 unsigned long flags;
291
292 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
293 return -EOPNOTSUPP;
294
295 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
296 spin_lock_irqsave(&to_hr_dev(ib_dev)->sm_lock, flags);
297 memcpy(ib_dev->node_desc, props->node_desc, NODE_DESC_SIZE);
298 spin_unlock_irqrestore(&to_hr_dev(ib_dev)->sm_lock, flags);
299 }
300
301 return 0;
302 }
303
hns_roce_alloc_ucontext(struct ib_ucontext * uctx,struct ib_udata * udata)304 static int hns_roce_alloc_ucontext(struct ib_ucontext *uctx,
305 struct ib_udata *udata)
306 {
307 int ret;
308 struct hns_roce_ucontext *context = to_hr_ucontext(uctx);
309 struct hns_roce_ib_alloc_ucontext_resp resp = {};
310 struct hns_roce_dev *hr_dev = to_hr_dev(uctx->device);
311
312 if (!hr_dev->active)
313 return -EAGAIN;
314
315 resp.qp_tab_size = hr_dev->caps.num_qps;
316
317 ret = hns_roce_uar_alloc(hr_dev, &context->uar);
318 if (ret)
319 goto error_fail_uar_alloc;
320
321 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) {
322 INIT_LIST_HEAD(&context->page_list);
323 mutex_init(&context->page_mutex);
324 }
325
326 resp.cqe_size = hr_dev->caps.cqe_sz;
327
328 ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
329 if (ret)
330 goto error_fail_copy_to_udata;
331
332 return 0;
333
334 error_fail_copy_to_udata:
335 hns_roce_uar_free(hr_dev, &context->uar);
336
337 error_fail_uar_alloc:
338 return ret;
339 }
340
hns_roce_dealloc_ucontext(struct ib_ucontext * ibcontext)341 static void hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext)
342 {
343 struct hns_roce_ucontext *context = to_hr_ucontext(ibcontext);
344
345 hns_roce_uar_free(to_hr_dev(ibcontext->device), &context->uar);
346 }
347
hns_roce_mmap(struct ib_ucontext * context,struct vm_area_struct * vma)348 static int hns_roce_mmap(struct ib_ucontext *context,
349 struct vm_area_struct *vma)
350 {
351 struct hns_roce_dev *hr_dev = to_hr_dev(context->device);
352
353 switch (vma->vm_pgoff) {
354 case 0:
355 return rdma_user_mmap_io(context, vma,
356 to_hr_ucontext(context)->uar.pfn,
357 PAGE_SIZE,
358 pgprot_noncached(vma->vm_page_prot),
359 NULL);
360
361 /* vm_pgoff: 1 -- TPTR */
362 case 1:
363 if (!hr_dev->tptr_dma_addr || !hr_dev->tptr_size)
364 return -EINVAL;
365 /*
366 * FIXME: using io_remap_pfn_range on the dma address returned
367 * by dma_alloc_coherent is totally wrong.
368 */
369 return rdma_user_mmap_io(context, vma,
370 hr_dev->tptr_dma_addr >> PAGE_SHIFT,
371 hr_dev->tptr_size,
372 vma->vm_page_prot,
373 NULL);
374
375 default:
376 return -EINVAL;
377 }
378 }
379
hns_roce_port_immutable(struct ib_device * ib_dev,u8 port_num,struct ib_port_immutable * immutable)380 static int hns_roce_port_immutable(struct ib_device *ib_dev, u8 port_num,
381 struct ib_port_immutable *immutable)
382 {
383 struct ib_port_attr attr;
384 int ret;
385
386 ret = ib_query_port(ib_dev, port_num, &attr);
387 if (ret)
388 return ret;
389
390 immutable->pkey_tbl_len = attr.pkey_tbl_len;
391 immutable->gid_tbl_len = attr.gid_tbl_len;
392
393 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
394 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
395 if (to_hr_dev(ib_dev)->caps.flags & HNS_ROCE_CAP_FLAG_ROCE_V1_V2)
396 immutable->core_cap_flags |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
397
398 return 0;
399 }
400
hns_roce_disassociate_ucontext(struct ib_ucontext * ibcontext)401 static void hns_roce_disassociate_ucontext(struct ib_ucontext *ibcontext)
402 {
403 }
404
hns_roce_unregister_device(struct hns_roce_dev * hr_dev)405 static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
406 {
407 struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;
408
409 hr_dev->active = false;
410 unregister_netdevice_notifier(&iboe->nb);
411 ib_unregister_device(&hr_dev->ib_dev);
412 }
413
414 static const struct ib_device_ops hns_roce_dev_ops = {
415 .owner = THIS_MODULE,
416 .driver_id = RDMA_DRIVER_HNS,
417 .uverbs_abi_ver = 1,
418 .uverbs_no_driver_id_binding = 1,
419
420 .add_gid = hns_roce_add_gid,
421 .alloc_pd = hns_roce_alloc_pd,
422 .alloc_ucontext = hns_roce_alloc_ucontext,
423 .create_ah = hns_roce_create_ah,
424 .create_cq = hns_roce_create_cq,
425 .create_qp = hns_roce_create_qp,
426 .dealloc_pd = hns_roce_dealloc_pd,
427 .dealloc_ucontext = hns_roce_dealloc_ucontext,
428 .del_gid = hns_roce_del_gid,
429 .dereg_mr = hns_roce_dereg_mr,
430 .destroy_ah = hns_roce_destroy_ah,
431 .destroy_cq = hns_roce_destroy_cq,
432 .disassociate_ucontext = hns_roce_disassociate_ucontext,
433 .fill_res_cq_entry = hns_roce_fill_res_cq_entry,
434 .get_dma_mr = hns_roce_get_dma_mr,
435 .get_link_layer = hns_roce_get_link_layer,
436 .get_port_immutable = hns_roce_port_immutable,
437 .mmap = hns_roce_mmap,
438 .modify_device = hns_roce_modify_device,
439 .modify_qp = hns_roce_modify_qp,
440 .query_ah = hns_roce_query_ah,
441 .query_device = hns_roce_query_device,
442 .query_pkey = hns_roce_query_pkey,
443 .query_port = hns_roce_query_port,
444 .reg_user_mr = hns_roce_reg_user_mr,
445
446 INIT_RDMA_OBJ_SIZE(ib_ah, hns_roce_ah, ibah),
447 INIT_RDMA_OBJ_SIZE(ib_cq, hns_roce_cq, ib_cq),
448 INIT_RDMA_OBJ_SIZE(ib_pd, hns_roce_pd, ibpd),
449 INIT_RDMA_OBJ_SIZE(ib_ucontext, hns_roce_ucontext, ibucontext),
450 };
451
452 static const struct ib_device_ops hns_roce_dev_mr_ops = {
453 .rereg_user_mr = hns_roce_rereg_user_mr,
454 };
455
456 static const struct ib_device_ops hns_roce_dev_mw_ops = {
457 .alloc_mw = hns_roce_alloc_mw,
458 .dealloc_mw = hns_roce_dealloc_mw,
459
460 INIT_RDMA_OBJ_SIZE(ib_mw, hns_roce_mw, ibmw),
461 };
462
463 static const struct ib_device_ops hns_roce_dev_frmr_ops = {
464 .alloc_mr = hns_roce_alloc_mr,
465 .map_mr_sg = hns_roce_map_mr_sg,
466 };
467
468 static const struct ib_device_ops hns_roce_dev_srq_ops = {
469 .create_srq = hns_roce_create_srq,
470 .destroy_srq = hns_roce_destroy_srq,
471
472 INIT_RDMA_OBJ_SIZE(ib_srq, hns_roce_srq, ibsrq),
473 };
474
hns_roce_register_device(struct hns_roce_dev * hr_dev)475 static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
476 {
477 int ret;
478 struct hns_roce_ib_iboe *iboe = NULL;
479 struct ib_device *ib_dev = NULL;
480 struct device *dev = hr_dev->dev;
481 unsigned int i;
482
483 iboe = &hr_dev->iboe;
484 spin_lock_init(&iboe->lock);
485
486 ib_dev = &hr_dev->ib_dev;
487
488 ib_dev->node_type = RDMA_NODE_IB_CA;
489 ib_dev->dev.parent = dev;
490
491 ib_dev->phys_port_cnt = hr_dev->caps.num_ports;
492 ib_dev->local_dma_lkey = hr_dev->caps.reserved_lkey;
493 ib_dev->num_comp_vectors = hr_dev->caps.num_comp_vectors;
494 ib_dev->uverbs_cmd_mask =
495 (1ULL << IB_USER_VERBS_CMD_GET_CONTEXT) |
496 (1ULL << IB_USER_VERBS_CMD_QUERY_DEVICE) |
497 (1ULL << IB_USER_VERBS_CMD_QUERY_PORT) |
498 (1ULL << IB_USER_VERBS_CMD_ALLOC_PD) |
499 (1ULL << IB_USER_VERBS_CMD_DEALLOC_PD) |
500 (1ULL << IB_USER_VERBS_CMD_REG_MR) |
501 (1ULL << IB_USER_VERBS_CMD_DEREG_MR) |
502 (1ULL << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
503 (1ULL << IB_USER_VERBS_CMD_CREATE_CQ) |
504 (1ULL << IB_USER_VERBS_CMD_DESTROY_CQ) |
505 (1ULL << IB_USER_VERBS_CMD_CREATE_QP) |
506 (1ULL << IB_USER_VERBS_CMD_MODIFY_QP) |
507 (1ULL << IB_USER_VERBS_CMD_QUERY_QP) |
508 (1ULL << IB_USER_VERBS_CMD_DESTROY_QP);
509
510 ib_dev->uverbs_ex_cmd_mask |= (1ULL << IB_USER_VERBS_EX_CMD_MODIFY_CQ);
511
512 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_REREG_MR) {
513 ib_dev->uverbs_cmd_mask |= (1ULL << IB_USER_VERBS_CMD_REREG_MR);
514 ib_set_device_ops(ib_dev, &hns_roce_dev_mr_ops);
515 }
516
517 /* MW */
518 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_MW) {
519 ib_dev->uverbs_cmd_mask |=
520 (1ULL << IB_USER_VERBS_CMD_ALLOC_MW) |
521 (1ULL << IB_USER_VERBS_CMD_DEALLOC_MW);
522 ib_set_device_ops(ib_dev, &hns_roce_dev_mw_ops);
523 }
524
525 /* FRMR */
526 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_FRMR)
527 ib_set_device_ops(ib_dev, &hns_roce_dev_frmr_ops);
528
529 /* SRQ */
530 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ) {
531 ib_dev->uverbs_cmd_mask |=
532 (1ULL << IB_USER_VERBS_CMD_CREATE_SRQ) |
533 (1ULL << IB_USER_VERBS_CMD_MODIFY_SRQ) |
534 (1ULL << IB_USER_VERBS_CMD_QUERY_SRQ) |
535 (1ULL << IB_USER_VERBS_CMD_DESTROY_SRQ) |
536 (1ULL << IB_USER_VERBS_CMD_POST_SRQ_RECV);
537 ib_set_device_ops(ib_dev, &hns_roce_dev_srq_ops);
538 ib_set_device_ops(ib_dev, hr_dev->hw->hns_roce_dev_srq_ops);
539 }
540
541 ib_set_device_ops(ib_dev, hr_dev->hw->hns_roce_dev_ops);
542 ib_set_device_ops(ib_dev, &hns_roce_dev_ops);
543 for (i = 0; i < hr_dev->caps.num_ports; i++) {
544 if (!hr_dev->iboe.netdevs[i])
545 continue;
546
547 ret = ib_device_set_netdev(ib_dev, hr_dev->iboe.netdevs[i],
548 i + 1);
549 if (ret)
550 return ret;
551 }
552 dma_set_max_seg_size(dev, UINT_MAX);
553 ret = ib_register_device(ib_dev, "hns_%d", dev);
554 if (ret) {
555 dev_err(dev, "ib_register_device failed!\n");
556 return ret;
557 }
558
559 ret = hns_roce_setup_mtu_mac(hr_dev);
560 if (ret) {
561 dev_err(dev, "setup_mtu_mac failed!\n");
562 goto error_failed_setup_mtu_mac;
563 }
564
565 iboe->nb.notifier_call = hns_roce_netdev_event;
566 ret = register_netdevice_notifier(&iboe->nb);
567 if (ret) {
568 dev_err(dev, "register_netdevice_notifier failed!\n");
569 goto error_failed_setup_mtu_mac;
570 }
571
572 hr_dev->active = true;
573 return 0;
574
575 error_failed_setup_mtu_mac:
576 ib_unregister_device(ib_dev);
577
578 return ret;
579 }
580
hns_roce_init_hem(struct hns_roce_dev * hr_dev)581 static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
582 {
583 int ret;
584 struct device *dev = hr_dev->dev;
585
586 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table,
587 HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz,
588 hr_dev->caps.num_mtpts, 1);
589 if (ret) {
590 dev_err(dev, "Failed to init MTPT context memory, aborting.\n");
591 return ret;
592 }
593
594 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table,
595 HEM_TYPE_QPC, hr_dev->caps.qpc_sz,
596 hr_dev->caps.num_qps, 1);
597 if (ret) {
598 dev_err(dev, "Failed to init QP context memory, aborting.\n");
599 goto err_unmap_dmpt;
600 }
601
602 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.irrl_table,
603 HEM_TYPE_IRRL,
604 hr_dev->caps.irrl_entry_sz *
605 hr_dev->caps.max_qp_init_rdma,
606 hr_dev->caps.num_qps, 1);
607 if (ret) {
608 dev_err(dev, "Failed to init irrl_table memory, aborting.\n");
609 goto err_unmap_qp;
610 }
611
612 if (hr_dev->caps.trrl_entry_sz) {
613 ret = hns_roce_init_hem_table(hr_dev,
614 &hr_dev->qp_table.trrl_table,
615 HEM_TYPE_TRRL,
616 hr_dev->caps.trrl_entry_sz *
617 hr_dev->caps.max_qp_dest_rdma,
618 hr_dev->caps.num_qps, 1);
619 if (ret) {
620 dev_err(dev,
621 "Failed to init trrl_table memory, aborting.\n");
622 goto err_unmap_irrl;
623 }
624 }
625
626 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table,
627 HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz,
628 hr_dev->caps.num_cqs, 1);
629 if (ret) {
630 dev_err(dev, "Failed to init CQ context memory, aborting.\n");
631 goto err_unmap_trrl;
632 }
633
634 if (hr_dev->caps.srqc_entry_sz) {
635 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->srq_table.table,
636 HEM_TYPE_SRQC,
637 hr_dev->caps.srqc_entry_sz,
638 hr_dev->caps.num_srqs, 1);
639 if (ret) {
640 dev_err(dev,
641 "Failed to init SRQ context memory, aborting.\n");
642 goto err_unmap_cq;
643 }
644 }
645
646 if (hr_dev->caps.sccc_sz) {
647 ret = hns_roce_init_hem_table(hr_dev,
648 &hr_dev->qp_table.sccc_table,
649 HEM_TYPE_SCCC,
650 hr_dev->caps.sccc_sz,
651 hr_dev->caps.num_qps, 1);
652 if (ret) {
653 dev_err(dev,
654 "Failed to init SCC context memory, aborting.\n");
655 goto err_unmap_srq;
656 }
657 }
658
659 if (hr_dev->caps.qpc_timer_entry_sz) {
660 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qpc_timer_table,
661 HEM_TYPE_QPC_TIMER,
662 hr_dev->caps.qpc_timer_entry_sz,
663 hr_dev->caps.num_qpc_timer, 1);
664 if (ret) {
665 dev_err(dev,
666 "Failed to init QPC timer memory, aborting.\n");
667 goto err_unmap_ctx;
668 }
669 }
670
671 if (hr_dev->caps.cqc_timer_entry_sz) {
672 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cqc_timer_table,
673 HEM_TYPE_CQC_TIMER,
674 hr_dev->caps.cqc_timer_entry_sz,
675 hr_dev->caps.num_cqc_timer, 1);
676 if (ret) {
677 dev_err(dev,
678 "Failed to init CQC timer memory, aborting.\n");
679 goto err_unmap_qpc_timer;
680 }
681 }
682
683 return 0;
684
685 err_unmap_qpc_timer:
686 if (hr_dev->caps.qpc_timer_entry_sz)
687 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qpc_timer_table);
688
689 err_unmap_ctx:
690 if (hr_dev->caps.sccc_sz)
691 hns_roce_cleanup_hem_table(hr_dev,
692 &hr_dev->qp_table.sccc_table);
693 err_unmap_srq:
694 if (hr_dev->caps.srqc_entry_sz)
695 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->srq_table.table);
696
697 err_unmap_cq:
698 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->cq_table.table);
699
700 err_unmap_trrl:
701 if (hr_dev->caps.trrl_entry_sz)
702 hns_roce_cleanup_hem_table(hr_dev,
703 &hr_dev->qp_table.trrl_table);
704
705 err_unmap_irrl:
706 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.irrl_table);
707
708 err_unmap_qp:
709 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.qp_table);
710
711 err_unmap_dmpt:
712 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table);
713
714 return ret;
715 }
716
717 /**
718 * hns_roce_setup_hca - setup host channel adapter
719 * @hr_dev: pointer to hns roce device
720 * Return : int
721 */
hns_roce_setup_hca(struct hns_roce_dev * hr_dev)722 static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev)
723 {
724 int ret;
725 struct device *dev = hr_dev->dev;
726
727 spin_lock_init(&hr_dev->sm_lock);
728 spin_lock_init(&hr_dev->bt_cmd_lock);
729
730 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) {
731 INIT_LIST_HEAD(&hr_dev->pgdir_list);
732 mutex_init(&hr_dev->pgdir_mutex);
733 }
734
735 ret = hns_roce_init_uar_table(hr_dev);
736 if (ret) {
737 dev_err(dev, "Failed to initialize uar table. aborting\n");
738 return ret;
739 }
740
741 ret = hns_roce_uar_alloc(hr_dev, &hr_dev->priv_uar);
742 if (ret) {
743 dev_err(dev, "Failed to allocate priv_uar.\n");
744 goto err_uar_table_free;
745 }
746
747 ret = hns_roce_init_pd_table(hr_dev);
748 if (ret) {
749 dev_err(dev, "Failed to init protected domain table.\n");
750 goto err_uar_alloc_free;
751 }
752
753 ret = hns_roce_init_mr_table(hr_dev);
754 if (ret) {
755 dev_err(dev, "Failed to init memory region table.\n");
756 goto err_pd_table_free;
757 }
758
759 ret = hns_roce_init_cq_table(hr_dev);
760 if (ret) {
761 dev_err(dev, "Failed to init completion queue table.\n");
762 goto err_mr_table_free;
763 }
764
765 ret = hns_roce_init_qp_table(hr_dev);
766 if (ret) {
767 dev_err(dev, "Failed to init queue pair table.\n");
768 goto err_cq_table_free;
769 }
770
771 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ) {
772 ret = hns_roce_init_srq_table(hr_dev);
773 if (ret) {
774 dev_err(dev,
775 "Failed to init share receive queue table.\n");
776 goto err_qp_table_free;
777 }
778 }
779
780 return 0;
781
782 err_qp_table_free:
783 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ)
784 hns_roce_cleanup_qp_table(hr_dev);
785
786 err_cq_table_free:
787 hns_roce_cleanup_cq_table(hr_dev);
788
789 err_mr_table_free:
790 hns_roce_cleanup_mr_table(hr_dev);
791
792 err_pd_table_free:
793 hns_roce_cleanup_pd_table(hr_dev);
794
795 err_uar_alloc_free:
796 hns_roce_uar_free(hr_dev, &hr_dev->priv_uar);
797
798 err_uar_table_free:
799 hns_roce_cleanup_uar_table(hr_dev);
800 return ret;
801 }
802
check_and_get_armed_cq(struct list_head * cq_list,struct ib_cq * cq)803 static void check_and_get_armed_cq(struct list_head *cq_list, struct ib_cq *cq)
804 {
805 struct hns_roce_cq *hr_cq = to_hr_cq(cq);
806 unsigned long flags;
807
808 spin_lock_irqsave(&hr_cq->lock, flags);
809 if (cq->comp_handler) {
810 if (!hr_cq->is_armed) {
811 hr_cq->is_armed = 1;
812 list_add_tail(&hr_cq->node, cq_list);
813 }
814 }
815 spin_unlock_irqrestore(&hr_cq->lock, flags);
816 }
817
hns_roce_handle_device_err(struct hns_roce_dev * hr_dev)818 void hns_roce_handle_device_err(struct hns_roce_dev *hr_dev)
819 {
820 struct hns_roce_qp *hr_qp;
821 struct hns_roce_cq *hr_cq;
822 struct list_head cq_list;
823 unsigned long flags_qp;
824 unsigned long flags;
825
826 INIT_LIST_HEAD(&cq_list);
827
828 spin_lock_irqsave(&hr_dev->qp_list_lock, flags);
829 list_for_each_entry(hr_qp, &hr_dev->qp_list, node) {
830 spin_lock_irqsave(&hr_qp->sq.lock, flags_qp);
831 if (hr_qp->sq.tail != hr_qp->sq.head)
832 check_and_get_armed_cq(&cq_list, hr_qp->ibqp.send_cq);
833 spin_unlock_irqrestore(&hr_qp->sq.lock, flags_qp);
834
835 spin_lock_irqsave(&hr_qp->rq.lock, flags_qp);
836 if ((!hr_qp->ibqp.srq) && (hr_qp->rq.tail != hr_qp->rq.head))
837 check_and_get_armed_cq(&cq_list, hr_qp->ibqp.recv_cq);
838 spin_unlock_irqrestore(&hr_qp->rq.lock, flags_qp);
839 }
840
841 list_for_each_entry(hr_cq, &cq_list, node)
842 hns_roce_cq_completion(hr_dev, hr_cq->cqn);
843
844 spin_unlock_irqrestore(&hr_dev->qp_list_lock, flags);
845 }
846
hns_roce_init(struct hns_roce_dev * hr_dev)847 int hns_roce_init(struct hns_roce_dev *hr_dev)
848 {
849 int ret;
850 struct device *dev = hr_dev->dev;
851
852 if (hr_dev->hw->reset) {
853 ret = hr_dev->hw->reset(hr_dev, true);
854 if (ret) {
855 dev_err(dev, "Reset RoCE engine failed!\n");
856 return ret;
857 }
858 }
859 hr_dev->is_reset = false;
860
861 if (hr_dev->hw->cmq_init) {
862 ret = hr_dev->hw->cmq_init(hr_dev);
863 if (ret) {
864 dev_err(dev, "Init RoCE Command Queue failed!\n");
865 goto error_failed_cmq_init;
866 }
867 }
868
869 ret = hr_dev->hw->hw_profile(hr_dev);
870 if (ret) {
871 dev_err(dev, "Get RoCE engine profile failed!\n");
872 goto error_failed_cmd_init;
873 }
874
875 ret = hns_roce_cmd_init(hr_dev);
876 if (ret) {
877 dev_err(dev, "cmd init failed!\n");
878 goto error_failed_cmd_init;
879 }
880
881 /* EQ depends on poll mode, event mode depends on EQ */
882 ret = hr_dev->hw->init_eq(hr_dev);
883 if (ret) {
884 dev_err(dev, "eq init failed!\n");
885 goto error_failed_eq_table;
886 }
887
888 if (hr_dev->cmd_mod) {
889 ret = hns_roce_cmd_use_events(hr_dev);
890 if (ret) {
891 dev_warn(dev,
892 "Cmd event mode failed, set back to poll!\n");
893 hns_roce_cmd_use_polling(hr_dev);
894 }
895 }
896
897 ret = hns_roce_init_hem(hr_dev);
898 if (ret) {
899 dev_err(dev, "init HEM(Hardware Entry Memory) failed!\n");
900 goto error_failed_init_hem;
901 }
902
903 ret = hns_roce_setup_hca(hr_dev);
904 if (ret) {
905 dev_err(dev, "setup hca failed!\n");
906 goto error_failed_setup_hca;
907 }
908
909 if (hr_dev->hw->hw_init) {
910 ret = hr_dev->hw->hw_init(hr_dev);
911 if (ret) {
912 dev_err(dev, "hw_init failed!\n");
913 goto error_failed_engine_init;
914 }
915 }
916
917 INIT_LIST_HEAD(&hr_dev->qp_list);
918 spin_lock_init(&hr_dev->qp_list_lock);
919
920 ret = hns_roce_register_device(hr_dev);
921 if (ret)
922 goto error_failed_register_device;
923
924 return 0;
925
926 error_failed_register_device:
927 if (hr_dev->hw->hw_exit)
928 hr_dev->hw->hw_exit(hr_dev);
929
930 error_failed_engine_init:
931 hns_roce_cleanup_bitmap(hr_dev);
932
933 error_failed_setup_hca:
934 hns_roce_cleanup_hem(hr_dev);
935
936 error_failed_init_hem:
937 if (hr_dev->cmd_mod)
938 hns_roce_cmd_use_polling(hr_dev);
939 hr_dev->hw->cleanup_eq(hr_dev);
940
941 error_failed_eq_table:
942 hns_roce_cmd_cleanup(hr_dev);
943
944 error_failed_cmd_init:
945 if (hr_dev->hw->cmq_exit)
946 hr_dev->hw->cmq_exit(hr_dev);
947
948 error_failed_cmq_init:
949 if (hr_dev->hw->reset) {
950 if (hr_dev->hw->reset(hr_dev, false))
951 dev_err(dev, "Dereset RoCE engine failed!\n");
952 }
953
954 return ret;
955 }
956
hns_roce_exit(struct hns_roce_dev * hr_dev)957 void hns_roce_exit(struct hns_roce_dev *hr_dev)
958 {
959 hns_roce_unregister_device(hr_dev);
960
961 if (hr_dev->hw->hw_exit)
962 hr_dev->hw->hw_exit(hr_dev);
963 hns_roce_cleanup_bitmap(hr_dev);
964 hns_roce_cleanup_hem(hr_dev);
965
966 if (hr_dev->cmd_mod)
967 hns_roce_cmd_use_polling(hr_dev);
968
969 hr_dev->hw->cleanup_eq(hr_dev);
970 hns_roce_cmd_cleanup(hr_dev);
971 if (hr_dev->hw->cmq_exit)
972 hr_dev->hw->cmq_exit(hr_dev);
973 if (hr_dev->hw->reset)
974 hr_dev->hw->reset(hr_dev, false);
975 }
976
977 MODULE_LICENSE("Dual BSD/GPL");
978 MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");
979 MODULE_AUTHOR("Nenglong Zhao <zhaonenglong@hisilicon.com>");
980 MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>");
981 MODULE_DESCRIPTION("HNS RoCE Driver");
982