]> git.ipfire.org Git - people/ms/linux.git/blob - drivers/infiniband/hw/irdma/verbs.c
projects / people / ms / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
selftests: forwarding: add shebang for sch_red.sh
[people/ms/linux.git] / drivers / infiniband / hw / irdma / verbs.c
1 // SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
2 /* Copyright (c) 2015 - 2021 Intel Corporation */
3 #include "main.h"
4
5 /**
6 * irdma_query_device - get device attributes
7 * @ibdev: device pointer from stack
8 * @props: returning device attributes
9 * @udata: user data
10 */
11 static int irdma_query_device(struct ib_device *ibdev,
12 struct ib_device_attr *props,
13 struct ib_udata *udata)
14 {
15 struct irdma_device *iwdev = to_iwdev(ibdev);
16 struct irdma_pci_f *rf = iwdev->rf;
17 struct pci_dev *pcidev = iwdev->rf->pcidev;
18 struct irdma_hw_attrs *hw_attrs = &rf->sc_dev.hw_attrs;
19
20 if (udata->inlen || udata->outlen)
21 return -EINVAL;
22
23 memset(props, 0, sizeof(*props));
24 addrconf_addr_eui48((u8 *)&props->sys_image_guid,
25 iwdev->netdev->dev_addr);
26 props->fw_ver = (u64)irdma_fw_major_ver(&rf->sc_dev) << 32 |
27 irdma_fw_minor_ver(&rf->sc_dev);
28 props->device_cap_flags = IB_DEVICE_MEM_WINDOW |
29 IB_DEVICE_MEM_MGT_EXTENSIONS;
30 props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY;
31 props->vendor_id = pcidev->vendor;
32 props->vendor_part_id = pcidev->device;
33
34 props->hw_ver = rf->pcidev->revision;
35 props->page_size_cap = hw_attrs->page_size_cap;
36 props->max_mr_size = hw_attrs->max_mr_size;
37 props->max_qp = rf->max_qp - rf->used_qps;
38 props->max_qp_wr = hw_attrs->max_qp_wr;
39 props->max_send_sge = hw_attrs->uk_attrs.max_hw_wq_frags;
40 props->max_recv_sge = hw_attrs->uk_attrs.max_hw_wq_frags;
41 props->max_cq = rf->max_cq - rf->used_cqs;
42 props->max_cqe = rf->max_cqe;
43 props->max_mr = rf->max_mr - rf->used_mrs;
44 props->max_mw = props->max_mr;
45 props->max_pd = rf->max_pd - rf->used_pds;
46 props->max_sge_rd = hw_attrs->uk_attrs.max_hw_read_sges;
47 props->max_qp_rd_atom = hw_attrs->max_hw_ird;
48 props->max_qp_init_rd_atom = hw_attrs->max_hw_ord;
49 if (rdma_protocol_roce(ibdev, 1))
50 props->max_pkeys = IRDMA_PKEY_TBL_SZ;
51 props->max_ah = rf->max_ah;
52 props->max_mcast_grp = rf->max_mcg;
53 props->max_mcast_qp_attach = IRDMA_MAX_MGS_PER_CTX;
54 props->max_total_mcast_qp_attach = rf->max_qp * IRDMA_MAX_MGS_PER_CTX;
55 props->max_fast_reg_page_list_len = IRDMA_MAX_PAGES_PER_FMR;
56 #define HCA_CLOCK_TIMESTAMP_MASK 0x1ffff
57 if (hw_attrs->uk_attrs.hw_rev >= IRDMA_GEN_2)
58 props->timestamp_mask = HCA_CLOCK_TIMESTAMP_MASK;
59
60 return 0;
61 }
62
63 /**
64 * irdma_get_eth_speed_and_width - Get IB port speed and width from netdev speed
65 * @link_speed: netdev phy link speed
66 * @active_speed: IB port speed
67 * @active_width: IB port width
68 */
69 static void irdma_get_eth_speed_and_width(u32 link_speed, u16 *active_speed,
70 u8 *active_width)
71 {
72 if (link_speed <= SPEED_1000) {
73 *active_width = IB_WIDTH_1X;
74 *active_speed = IB_SPEED_SDR;
75 } else if (link_speed <= SPEED_10000) {
76 *active_width = IB_WIDTH_1X;
77 *active_speed = IB_SPEED_FDR10;
78 } else if (link_speed <= SPEED_20000) {
79 *active_width = IB_WIDTH_4X;
80 *active_speed = IB_SPEED_DDR;
81 } else if (link_speed <= SPEED_25000) {
82 *active_width = IB_WIDTH_1X;
83 *active_speed = IB_SPEED_EDR;
84 } else if (link_speed <= SPEED_40000) {
85 *active_width = IB_WIDTH_4X;
86 *active_speed = IB_SPEED_FDR10;
87 } else {
88 *active_width = IB_WIDTH_4X;
89 *active_speed = IB_SPEED_EDR;
90 }
91 }
92
93 /**
94 * irdma_query_port - get port attributes
95 * @ibdev: device pointer from stack
96 * @port: port number for query
97 * @props: returning device attributes
98 */
99 static int irdma_query_port(struct ib_device *ibdev, u32 port,
100 struct ib_port_attr *props)
101 {
102 struct irdma_device *iwdev = to_iwdev(ibdev);
103 struct net_device *netdev = iwdev->netdev;
104
105 /* no need to zero out pros here. done by caller */
106
107 props->max_mtu = IB_MTU_4096;
108 props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
109 props->lid = 1;
110 props->lmc = 0;
111 props->sm_lid = 0;
112 props->sm_sl = 0;
113 if (netif_carrier_ok(netdev) && netif_running(netdev)) {
114 props->state = IB_PORT_ACTIVE;
115 props->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
116 } else {
117 props->state = IB_PORT_DOWN;
118 props->phys_state = IB_PORT_PHYS_STATE_DISABLED;
119 }
120 irdma_get_eth_speed_and_width(SPEED_100000, &props->active_speed,
121 &props->active_width);
122
123 if (rdma_protocol_roce(ibdev, 1)) {
124 props->gid_tbl_len = 32;
125 props->ip_gids = true;
126 props->pkey_tbl_len = IRDMA_PKEY_TBL_SZ;
127 } else {
128 props->gid_tbl_len = 1;
129 }
130 props->qkey_viol_cntr = 0;
131 props->port_cap_flags |= IB_PORT_CM_SUP | IB_PORT_REINIT_SUP;
132 props->max_msg_sz = iwdev->rf->sc_dev.hw_attrs.max_hw_outbound_msg_size;
133
134 return 0;
135 }
136
137 /**
138 * irdma_disassociate_ucontext - Disassociate user context
139 * @context: ib user context
140 */
141 static void irdma_disassociate_ucontext(struct ib_ucontext *context)
142 {
143 }
144
145 static int irdma_mmap_legacy(struct irdma_ucontext *ucontext,
146 struct vm_area_struct *vma)
147 {
148 u64 pfn;
149
150 if (vma->vm_pgoff || vma->vm_end - vma->vm_start != PAGE_SIZE)
151 return -EINVAL;
152
153 vma->vm_private_data = ucontext;
154 pfn = ((uintptr_t)ucontext->iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET] +
155 pci_resource_start(ucontext->iwdev->rf->pcidev, 0)) >> PAGE_SHIFT;
156
157 return rdma_user_mmap_io(&ucontext->ibucontext, vma, pfn, PAGE_SIZE,
158 pgprot_noncached(vma->vm_page_prot), NULL);
159 }
160
161 static void irdma_mmap_free(struct rdma_user_mmap_entry *rdma_entry)
162 {
163 struct irdma_user_mmap_entry *entry = to_irdma_mmap_entry(rdma_entry);
164
165 kfree(entry);
166 }
167
168 static struct rdma_user_mmap_entry*
169 irdma_user_mmap_entry_insert(struct irdma_ucontext *ucontext, u64 bar_offset,
170 enum irdma_mmap_flag mmap_flag, u64 *mmap_offset)
171 {
172 struct irdma_user_mmap_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL);
173 int ret;
174
175 if (!entry)
176 return NULL;
177
178 entry->bar_offset = bar_offset;
179 entry->mmap_flag = mmap_flag;
180
181 ret = rdma_user_mmap_entry_insert(&ucontext->ibucontext,
182 &entry->rdma_entry, PAGE_SIZE);
183 if (ret) {
184 kfree(entry);
185 return NULL;
186 }
187 *mmap_offset = rdma_user_mmap_get_offset(&entry->rdma_entry);
188
189 return &entry->rdma_entry;
190 }
191
192 /**
193 * irdma_mmap - user memory map
194 * @context: context created during alloc
195 * @vma: kernel info for user memory map
196 */
197 static int irdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
198 {
199 struct rdma_user_mmap_entry *rdma_entry;
200 struct irdma_user_mmap_entry *entry;
201 struct irdma_ucontext *ucontext;
202 u64 pfn;
203 int ret;
204
205 ucontext = to_ucontext(context);
206
207 /* Legacy support for libi40iw with hard-coded mmap key */
208 if (ucontext->legacy_mode)
209 return irdma_mmap_legacy(ucontext, vma);
210
211 rdma_entry = rdma_user_mmap_entry_get(&ucontext->ibucontext, vma);
212 if (!rdma_entry) {
213 ibdev_dbg(&ucontext->iwdev->ibdev,
214 "VERBS: pgoff[0x%lx] does not have valid entry\n",
215 vma->vm_pgoff);
216 return -EINVAL;
217 }
218
219 entry = to_irdma_mmap_entry(rdma_entry);
220 ibdev_dbg(&ucontext->iwdev->ibdev,
221 "VERBS: bar_offset [0x%llx] mmap_flag [%d]\n",
222 entry->bar_offset, entry->mmap_flag);
223
224 pfn = (entry->bar_offset +
225 pci_resource_start(ucontext->iwdev->rf->pcidev, 0)) >> PAGE_SHIFT;
226
227 switch (entry->mmap_flag) {
228 case IRDMA_MMAP_IO_NC:
229 ret = rdma_user_mmap_io(context, vma, pfn, PAGE_SIZE,
230 pgprot_noncached(vma->vm_page_prot),
231 rdma_entry);
232 break;
233 case IRDMA_MMAP_IO_WC:
234 ret = rdma_user_mmap_io(context, vma, pfn, PAGE_SIZE,
235 pgprot_writecombine(vma->vm_page_prot),
236 rdma_entry);
237 break;
238 default:
239 ret = -EINVAL;
240 }
241
242 if (ret)
243 ibdev_dbg(&ucontext->iwdev->ibdev,
244 "VERBS: bar_offset [0x%llx] mmap_flag[%d] err[%d]\n",
245 entry->bar_offset, entry->mmap_flag, ret);
246 rdma_user_mmap_entry_put(rdma_entry);
247
248 return ret;
249 }
250
251 /**
252 * irdma_alloc_push_page - allocate a push page for qp
253 * @iwqp: qp pointer
254 */
255 static void irdma_alloc_push_page(struct irdma_qp *iwqp)
256 {
257 struct irdma_cqp_request *cqp_request;
258 struct cqp_cmds_info *cqp_info;
259 struct irdma_device *iwdev = iwqp->iwdev;
260 struct irdma_sc_qp *qp = &iwqp->sc_qp;
261 int status;
262
263 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
264 if (!cqp_request)
265 return;
266
267 cqp_info = &cqp_request->info;
268 cqp_info->cqp_cmd = IRDMA_OP_MANAGE_PUSH_PAGE;
269 cqp_info->post_sq = 1;
270 cqp_info->in.u.manage_push_page.info.push_idx = 0;
271 cqp_info->in.u.manage_push_page.info.qs_handle =
272 qp->vsi->qos[qp->user_pri].qs_handle;
273 cqp_info->in.u.manage_push_page.info.free_page = 0;
274 cqp_info->in.u.manage_push_page.info.push_page_type = 0;
275 cqp_info->in.u.manage_push_page.cqp = &iwdev->rf->cqp.sc_cqp;
276 cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
277
278 status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
279 if (!status && cqp_request->compl_info.op_ret_val <
280 iwdev->rf->sc_dev.hw_attrs.max_hw_device_pages) {
281 qp->push_idx = cqp_request->compl_info.op_ret_val;
282 qp->push_offset = 0;
283 }
284
285 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
286 }
287
288 /**
289 * irdma_alloc_ucontext - Allocate the user context data structure
290 * @uctx: uverbs context pointer
291 * @udata: user data
292 *
293 * This keeps track of all objects associated with a particular
294 * user-mode client.
295 */
296 static int irdma_alloc_ucontext(struct ib_ucontext *uctx,
297 struct ib_udata *udata)
298 {
299 struct ib_device *ibdev = uctx->device;
300 struct irdma_device *iwdev = to_iwdev(ibdev);
301 struct irdma_alloc_ucontext_req req;
302 struct irdma_alloc_ucontext_resp uresp = {};
303 struct irdma_ucontext *ucontext = to_ucontext(uctx);
304 struct irdma_uk_attrs *uk_attrs;
305
306 if (ib_copy_from_udata(&req, udata, min(sizeof(req), udata->inlen)))
307 return -EINVAL;
308
309 if (req.userspace_ver < 4 || req.userspace_ver > IRDMA_ABI_VER)
310 goto ver_error;
311
312 ucontext->iwdev = iwdev;
313 ucontext->abi_ver = req.userspace_ver;
314
315 uk_attrs = &iwdev->rf->sc_dev.hw_attrs.uk_attrs;
316 /* GEN_1 legacy support with libi40iw */
317 if (udata->outlen < sizeof(uresp)) {
318 if (uk_attrs->hw_rev != IRDMA_GEN_1)
319 return -EOPNOTSUPP;
320
321 ucontext->legacy_mode = true;
322 uresp.max_qps = iwdev->rf->max_qp;
323 uresp.max_pds = iwdev->rf->sc_dev.hw_attrs.max_hw_pds;
324 uresp.wq_size = iwdev->rf->sc_dev.hw_attrs.max_qp_wr * 2;
325 uresp.kernel_ver = req.userspace_ver;
326 if (ib_copy_to_udata(udata, &uresp,
327 min(sizeof(uresp), udata->outlen)))
328 return -EFAULT;
329 } else {
330 u64 bar_off = (uintptr_t)iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET];
331
332 ucontext->db_mmap_entry =
333 irdma_user_mmap_entry_insert(ucontext, bar_off,
334 IRDMA_MMAP_IO_NC,
335 &uresp.db_mmap_key);
336 if (!ucontext->db_mmap_entry)
337 return -ENOMEM;
338
339 uresp.kernel_ver = IRDMA_ABI_VER;
340 uresp.feature_flags = uk_attrs->feature_flags;
341 uresp.max_hw_wq_frags = uk_attrs->max_hw_wq_frags;
342 uresp.max_hw_read_sges = uk_attrs->max_hw_read_sges;
343 uresp.max_hw_inline = uk_attrs->max_hw_inline;
344 uresp.max_hw_rq_quanta = uk_attrs->max_hw_rq_quanta;
345 uresp.max_hw_wq_quanta = uk_attrs->max_hw_wq_quanta;
346 uresp.max_hw_sq_chunk = uk_attrs->max_hw_sq_chunk;
347 uresp.max_hw_cq_size = uk_attrs->max_hw_cq_size;
348 uresp.min_hw_cq_size = uk_attrs->min_hw_cq_size;
349 uresp.hw_rev = uk_attrs->hw_rev;
350 if (ib_copy_to_udata(udata, &uresp,
351 min(sizeof(uresp), udata->outlen))) {
352 rdma_user_mmap_entry_remove(ucontext->db_mmap_entry);
353 return -EFAULT;
354 }
355 }
356
357 INIT_LIST_HEAD(&ucontext->cq_reg_mem_list);
358 spin_lock_init(&ucontext->cq_reg_mem_list_lock);
359 INIT_LIST_HEAD(&ucontext->qp_reg_mem_list);
360 spin_lock_init(&ucontext->qp_reg_mem_list_lock);
361
362 return 0;
363
364 ver_error:
365 ibdev_err(&iwdev->ibdev,
366 "Invalid userspace driver version detected. Detected version %d, should be %d\n",
367 req.userspace_ver, IRDMA_ABI_VER);
368 return -EINVAL;
369 }
370
371 /**
372 * irdma_dealloc_ucontext - deallocate the user context data structure
373 * @context: user context created during alloc
374 */
375 static void irdma_dealloc_ucontext(struct ib_ucontext *context)
376 {
377 struct irdma_ucontext *ucontext = to_ucontext(context);
378
379 rdma_user_mmap_entry_remove(ucontext->db_mmap_entry);
380 }
381
382 /**
383 * irdma_alloc_pd - allocate protection domain
384 * @pd: PD pointer
385 * @udata: user data
386 */
387 static int irdma_alloc_pd(struct ib_pd *pd, struct ib_udata *udata)
388 {
389 struct irdma_pd *iwpd = to_iwpd(pd);
390 struct irdma_device *iwdev = to_iwdev(pd->device);
391 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
392 struct irdma_pci_f *rf = iwdev->rf;
393 struct irdma_alloc_pd_resp uresp = {};
394 struct irdma_sc_pd *sc_pd;
395 u32 pd_id = 0;
396 int err;
397
398 err = irdma_alloc_rsrc(rf, rf->allocated_pds, rf->max_pd, &pd_id,
399 &rf->next_pd);
400 if (err)
401 return err;
402
403 sc_pd = &iwpd->sc_pd;
404 if (udata) {
405 struct irdma_ucontext *ucontext =
406 rdma_udata_to_drv_context(udata, struct irdma_ucontext,
407 ibucontext);
408 irdma_sc_pd_init(dev, sc_pd, pd_id, ucontext->abi_ver);
409 uresp.pd_id = pd_id;
410 if (ib_copy_to_udata(udata, &uresp,
411 min(sizeof(uresp), udata->outlen))) {
412 err = -EFAULT;
413 goto error;
414 }
415 } else {
416 irdma_sc_pd_init(dev, sc_pd, pd_id, IRDMA_ABI_VER);
417 }
418
419 return 0;
420 error:
421 irdma_free_rsrc(rf, rf->allocated_pds, pd_id);
422
423 return err;
424 }
425
426 /**
427 * irdma_dealloc_pd - deallocate pd
428 * @ibpd: ptr of pd to be deallocated
429 * @udata: user data
430 */
431 static int irdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
432 {
433 struct irdma_pd *iwpd = to_iwpd(ibpd);
434 struct irdma_device *iwdev = to_iwdev(ibpd->device);
435
436 irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_pds, iwpd->sc_pd.pd_id);
437
438 return 0;
439 }
440
441 /**
442 * irdma_get_pbl - Retrieve pbl from a list given a virtual
443 * address
444 * @va: user virtual address
445 * @pbl_list: pbl list to search in (QP's or CQ's)
446 */
447 static struct irdma_pbl *irdma_get_pbl(unsigned long va,
448 struct list_head *pbl_list)
449 {
450 struct irdma_pbl *iwpbl;
451
452 list_for_each_entry (iwpbl, pbl_list, list) {
453 if (iwpbl->user_base == va) {
454 list_del(&iwpbl->list);
455 iwpbl->on_list = false;
456 return iwpbl;
457 }
458 }
459
460 return NULL;
461 }
462
463 /**
464 * irdma_clean_cqes - clean cq entries for qp
465 * @iwqp: qp ptr (user or kernel)
466 * @iwcq: cq ptr
467 */
468 static void irdma_clean_cqes(struct irdma_qp *iwqp, struct irdma_cq *iwcq)
469 {
470 struct irdma_cq_uk *ukcq = &iwcq->sc_cq.cq_uk;
471 unsigned long flags;
472
473 spin_lock_irqsave(&iwcq->lock, flags);
474 irdma_uk_clean_cq(&iwqp->sc_qp.qp_uk, ukcq);
475 spin_unlock_irqrestore(&iwcq->lock, flags);
476 }
477
478 static void irdma_remove_push_mmap_entries(struct irdma_qp *iwqp)
479 {
480 if (iwqp->push_db_mmap_entry) {
481 rdma_user_mmap_entry_remove(iwqp->push_db_mmap_entry);
482 iwqp->push_db_mmap_entry = NULL;
483 }
484 if (iwqp->push_wqe_mmap_entry) {
485 rdma_user_mmap_entry_remove(iwqp->push_wqe_mmap_entry);
486 iwqp->push_wqe_mmap_entry = NULL;
487 }
488 }
489
490 static int irdma_setup_push_mmap_entries(struct irdma_ucontext *ucontext,
491 struct irdma_qp *iwqp,
492 u64 *push_wqe_mmap_key,
493 u64 *push_db_mmap_key)
494 {
495 struct irdma_device *iwdev = ucontext->iwdev;
496 u64 rsvd, bar_off;
497
498 rsvd = IRDMA_PF_BAR_RSVD;
499 bar_off = (uintptr_t)iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET];
500 /* skip over db page */
501 bar_off += IRDMA_HW_PAGE_SIZE;
502 /* push wqe page */
503 bar_off += rsvd + iwqp->sc_qp.push_idx * IRDMA_HW_PAGE_SIZE;
504 iwqp->push_wqe_mmap_entry = irdma_user_mmap_entry_insert(ucontext,
505 bar_off, IRDMA_MMAP_IO_WC,
506 push_wqe_mmap_key);
507 if (!iwqp->push_wqe_mmap_entry)
508 return -ENOMEM;
509
510 /* push doorbell page */
511 bar_off += IRDMA_HW_PAGE_SIZE;
512 iwqp->push_db_mmap_entry = irdma_user_mmap_entry_insert(ucontext,
513 bar_off, IRDMA_MMAP_IO_NC,
514 push_db_mmap_key);
515 if (!iwqp->push_db_mmap_entry) {
516 rdma_user_mmap_entry_remove(iwqp->push_wqe_mmap_entry);
517 return -ENOMEM;
518 }
519
520 return 0;
521 }
522
523 /**
524 * irdma_destroy_qp - destroy qp
525 * @ibqp: qp's ib pointer also to get to device's qp address
526 * @udata: user data
527 */
528 static int irdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
529 {
530 struct irdma_qp *iwqp = to_iwqp(ibqp);
531 struct irdma_device *iwdev = iwqp->iwdev;
532
533 iwqp->sc_qp.qp_uk.destroy_pending = true;
534
535 if (iwqp->iwarp_state == IRDMA_QP_STATE_RTS)
536 irdma_modify_qp_to_err(&iwqp->sc_qp);
537
538 if (!iwqp->user_mode)
539 cancel_delayed_work_sync(&iwqp->dwork_flush);
540
541 irdma_qp_rem_ref(&iwqp->ibqp);
542 wait_for_completion(&iwqp->free_qp);
543 irdma_free_lsmm_rsrc(iwqp);
544 irdma_cqp_qp_destroy_cmd(&iwdev->rf->sc_dev, &iwqp->sc_qp);
545
546 if (!iwqp->user_mode) {
547 if (iwqp->iwscq) {
548 irdma_clean_cqes(iwqp, iwqp->iwscq);
549 if (iwqp->iwrcq != iwqp->iwscq)
550 irdma_clean_cqes(iwqp, iwqp->iwrcq);
551 }
552 }
553 irdma_remove_push_mmap_entries(iwqp);
554 irdma_free_qp_rsrc(iwqp);
555
556 return 0;
557 }
558
559 /**
560 * irdma_setup_virt_qp - setup for allocation of virtual qp
561 * @iwdev: irdma device
562 * @iwqp: qp ptr
563 * @init_info: initialize info to return
564 */
565 static void irdma_setup_virt_qp(struct irdma_device *iwdev,
566 struct irdma_qp *iwqp,
567 struct irdma_qp_init_info *init_info)
568 {
569 struct irdma_pbl *iwpbl = iwqp->iwpbl;
570 struct irdma_qp_mr *qpmr = &iwpbl->qp_mr;
571
572 iwqp->page = qpmr->sq_page;
573 init_info->shadow_area_pa = qpmr->shadow;
574 if (iwpbl->pbl_allocated) {
575 init_info->virtual_map = true;
576 init_info->sq_pa = qpmr->sq_pbl.idx;
577 init_info->rq_pa = qpmr->rq_pbl.idx;
578 } else {
579 init_info->sq_pa = qpmr->sq_pbl.addr;
580 init_info->rq_pa = qpmr->rq_pbl.addr;
581 }
582 }
583
584 /**
585 * irdma_setup_kmode_qp - setup initialization for kernel mode qp
586 * @iwdev: iwarp device
587 * @iwqp: qp ptr (user or kernel)
588 * @info: initialize info to return
589 * @init_attr: Initial QP create attributes
590 */
591 static int irdma_setup_kmode_qp(struct irdma_device *iwdev,
592 struct irdma_qp *iwqp,
593 struct irdma_qp_init_info *info,
594 struct ib_qp_init_attr *init_attr)
595 {
596 struct irdma_dma_mem *mem = &iwqp->kqp.dma_mem;
597 u32 sqdepth, rqdepth;
598 u8 sqshift, rqshift;
599 u32 size;
600 int status;
601 struct irdma_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
602 struct irdma_uk_attrs *uk_attrs = &iwdev->rf->sc_dev.hw_attrs.uk_attrs;
603
604 irdma_get_wqe_shift(uk_attrs,
605 uk_attrs->hw_rev >= IRDMA_GEN_2 ? ukinfo->max_sq_frag_cnt + 1 :
606 ukinfo->max_sq_frag_cnt,
607 ukinfo->max_inline_data, &sqshift);
608 status = irdma_get_sqdepth(uk_attrs, ukinfo->sq_size, sqshift,
609 &sqdepth);
610 if (status)
611 return status;
612
613 if (uk_attrs->hw_rev == IRDMA_GEN_1)
614 rqshift = IRDMA_MAX_RQ_WQE_SHIFT_GEN1;
615 else
616 irdma_get_wqe_shift(uk_attrs, ukinfo->max_rq_frag_cnt, 0,
617 &rqshift);
618
619 status = irdma_get_rqdepth(uk_attrs, ukinfo->rq_size, rqshift,
620 &rqdepth);
621 if (status)
622 return status;
623
624 iwqp->kqp.sq_wrid_mem =
625 kcalloc(sqdepth, sizeof(*iwqp->kqp.sq_wrid_mem), GFP_KERNEL);
626 if (!iwqp->kqp.sq_wrid_mem)
627 return -ENOMEM;
628
629 iwqp->kqp.rq_wrid_mem =
630 kcalloc(rqdepth, sizeof(*iwqp->kqp.rq_wrid_mem), GFP_KERNEL);
631 if (!iwqp->kqp.rq_wrid_mem) {
632 kfree(iwqp->kqp.sq_wrid_mem);
633 iwqp->kqp.sq_wrid_mem = NULL;
634 return -ENOMEM;
635 }
636
637 ukinfo->sq_wrtrk_array = iwqp->kqp.sq_wrid_mem;
638 ukinfo->rq_wrid_array = iwqp->kqp.rq_wrid_mem;
639
640 size = (sqdepth + rqdepth) * IRDMA_QP_WQE_MIN_SIZE;
641 size += (IRDMA_SHADOW_AREA_SIZE << 3);
642
643 mem->size = ALIGN(size, 256);
644 mem->va = dma_alloc_coherent(iwdev->rf->hw.device, mem->size,
645 &mem->pa, GFP_KERNEL);
646 if (!mem->va) {
647 kfree(iwqp->kqp.sq_wrid_mem);
648 iwqp->kqp.sq_wrid_mem = NULL;
649 kfree(iwqp->kqp.rq_wrid_mem);
650 iwqp->kqp.rq_wrid_mem = NULL;
651 return -ENOMEM;
652 }
653
654 ukinfo->sq = mem->va;
655 info->sq_pa = mem->pa;
656 ukinfo->rq = &ukinfo->sq[sqdepth];
657 info->rq_pa = info->sq_pa + (sqdepth * IRDMA_QP_WQE_MIN_SIZE);
658 ukinfo->shadow_area = ukinfo->rq[rqdepth].elem;
659 info->shadow_area_pa = info->rq_pa + (rqdepth * IRDMA_QP_WQE_MIN_SIZE);
660 ukinfo->sq_size = sqdepth >> sqshift;
661 ukinfo->rq_size = rqdepth >> rqshift;
662 ukinfo->qp_id = iwqp->ibqp.qp_num;
663
664 init_attr->cap.max_send_wr = (sqdepth - IRDMA_SQ_RSVD) >> sqshift;
665 init_attr->cap.max_recv_wr = (rqdepth - IRDMA_RQ_RSVD) >> rqshift;
666
667 return 0;
668 }
669
670 static int irdma_cqp_create_qp_cmd(struct irdma_qp *iwqp)
671 {
672 struct irdma_pci_f *rf = iwqp->iwdev->rf;
673 struct irdma_cqp_request *cqp_request;
674 struct cqp_cmds_info *cqp_info;
675 struct irdma_create_qp_info *qp_info;
676 int status;
677
678 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
679 if (!cqp_request)
680 return -ENOMEM;
681
682 cqp_info = &cqp_request->info;
683 qp_info = &cqp_request->info.in.u.qp_create.info;
684 memset(qp_info, 0, sizeof(*qp_info));
685 qp_info->mac_valid = true;
686 qp_info->cq_num_valid = true;
687 qp_info->next_iwarp_state = IRDMA_QP_STATE_IDLE;
688
689 cqp_info->cqp_cmd = IRDMA_OP_QP_CREATE;
690 cqp_info->post_sq = 1;
691 cqp_info->in.u.qp_create.qp = &iwqp->sc_qp;
692 cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
693 status = irdma_handle_cqp_op(rf, cqp_request);
694 irdma_put_cqp_request(&rf->cqp, cqp_request);
695
696 return status;
697 }
698
699 static void irdma_roce_fill_and_set_qpctx_info(struct irdma_qp *iwqp,
700 struct irdma_qp_host_ctx_info *ctx_info)
701 {
702 struct irdma_device *iwdev = iwqp->iwdev;
703 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
704 struct irdma_roce_offload_info *roce_info;
705 struct irdma_udp_offload_info *udp_info;
706
707 udp_info = &iwqp->udp_info;
708 udp_info->snd_mss = ib_mtu_enum_to_int(ib_mtu_int_to_enum(iwdev->vsi.mtu));
709 udp_info->cwnd = iwdev->roce_cwnd;
710 udp_info->rexmit_thresh = 2;
711 udp_info->rnr_nak_thresh = 2;
712 udp_info->src_port = 0xc000;
713 udp_info->dst_port = ROCE_V2_UDP_DPORT;
714 roce_info = &iwqp->roce_info;
715 ether_addr_copy(roce_info->mac_addr, iwdev->netdev->dev_addr);
716
717 roce_info->rd_en = true;
718 roce_info->wr_rdresp_en = true;
719 roce_info->bind_en = true;
720 roce_info->dcqcn_en = false;
721 roce_info->rtomin = 5;
722
723 roce_info->ack_credits = iwdev->roce_ackcreds;
724 roce_info->ird_size = dev->hw_attrs.max_hw_ird;
725 roce_info->ord_size = dev->hw_attrs.max_hw_ord;
726
727 if (!iwqp->user_mode) {
728 roce_info->priv_mode_en = true;
729 roce_info->fast_reg_en = true;
730 roce_info->udprivcq_en = true;
731 }
732 roce_info->roce_tver = 0;
733
734 ctx_info->roce_info = &iwqp->roce_info;
735 ctx_info->udp_info = &iwqp->udp_info;
736 irdma_sc_qp_setctx_roce(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
737 }
738
739 static void irdma_iw_fill_and_set_qpctx_info(struct irdma_qp *iwqp,
740 struct irdma_qp_host_ctx_info *ctx_info)
741 {
742 struct irdma_device *iwdev = iwqp->iwdev;
743 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
744 struct irdma_iwarp_offload_info *iwarp_info;
745
746 iwarp_info = &iwqp->iwarp_info;
747 ether_addr_copy(iwarp_info->mac_addr, iwdev->netdev->dev_addr);
748 iwarp_info->rd_en = true;
749 iwarp_info->wr_rdresp_en = true;
750 iwarp_info->bind_en = true;
751 iwarp_info->ecn_en = true;
752 iwarp_info->rtomin = 5;
753
754 if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
755 iwarp_info->ib_rd_en = true;
756 if (!iwqp->user_mode) {
757 iwarp_info->priv_mode_en = true;
758 iwarp_info->fast_reg_en = true;
759 }
760 iwarp_info->ddp_ver = 1;
761 iwarp_info->rdmap_ver = 1;
762
763 ctx_info->iwarp_info = &iwqp->iwarp_info;
764 ctx_info->iwarp_info_valid = true;
765 irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
766 ctx_info->iwarp_info_valid = false;
767 }
768
769 static int irdma_validate_qp_attrs(struct ib_qp_init_attr *init_attr,
770 struct irdma_device *iwdev)
771 {
772 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
773 struct irdma_uk_attrs *uk_attrs = &dev->hw_attrs.uk_attrs;
774
775 if (init_attr->create_flags)
776 return -EOPNOTSUPP;
777
778 if (init_attr->cap.max_inline_data > uk_attrs->max_hw_inline ||
779 init_attr->cap.max_send_sge > uk_attrs->max_hw_wq_frags ||
780 init_attr->cap.max_recv_sge > uk_attrs->max_hw_wq_frags)
781 return -EINVAL;
782
783 if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
784 if (init_attr->qp_type != IB_QPT_RC &&
785 init_attr->qp_type != IB_QPT_UD &&
786 init_attr->qp_type != IB_QPT_GSI)
787 return -EOPNOTSUPP;
788 } else {
789 if (init_attr->qp_type != IB_QPT_RC)
790 return -EOPNOTSUPP;
791 }
792
793 return 0;
794 }
795
796 static void irdma_flush_worker(struct work_struct *work)
797 {
798 struct delayed_work *dwork = to_delayed_work(work);
799 struct irdma_qp *iwqp = container_of(dwork, struct irdma_qp, dwork_flush);
800
801 irdma_generate_flush_completions(iwqp);
802 }
803
804 /**
805 * irdma_create_qp - create qp
806 * @ibqp: ptr of qp
807 * @init_attr: attributes for qp
808 * @udata: user data for create qp
809 */
810 static int irdma_create_qp(struct ib_qp *ibqp,
811 struct ib_qp_init_attr *init_attr,
812 struct ib_udata *udata)
813 {
814 struct ib_pd *ibpd = ibqp->pd;
815 struct irdma_pd *iwpd = to_iwpd(ibpd);
816 struct irdma_device *iwdev = to_iwdev(ibpd->device);
817 struct irdma_pci_f *rf = iwdev->rf;
818 struct irdma_qp *iwqp = to_iwqp(ibqp);
819 struct irdma_create_qp_req req;
820 struct irdma_create_qp_resp uresp = {};
821 u32 qp_num = 0;
822 int err_code;
823 int sq_size;
824 int rq_size;
825 struct irdma_sc_qp *qp;
826 struct irdma_sc_dev *dev = &rf->sc_dev;
827 struct irdma_uk_attrs *uk_attrs = &dev->hw_attrs.uk_attrs;
828 struct irdma_qp_init_info init_info = {};
829 struct irdma_qp_host_ctx_info *ctx_info;
830 unsigned long flags;
831
832 err_code = irdma_validate_qp_attrs(init_attr, iwdev);
833 if (err_code)
834 return err_code;
835
836 sq_size = init_attr->cap.max_send_wr;
837 rq_size = init_attr->cap.max_recv_wr;
838
839 init_info.vsi = &iwdev->vsi;
840 init_info.qp_uk_init_info.uk_attrs = uk_attrs;
841 init_info.qp_uk_init_info.sq_size = sq_size;
842 init_info.qp_uk_init_info.rq_size = rq_size;
843 init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge;
844 init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge;
845 init_info.qp_uk_init_info.max_inline_data = init_attr->cap.max_inline_data;
846
847 qp = &iwqp->sc_qp;
848 qp->qp_uk.back_qp = iwqp;
849 qp->push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX;
850
851 iwqp->iwdev = iwdev;
852 iwqp->q2_ctx_mem.size = ALIGN(IRDMA_Q2_BUF_SIZE + IRDMA_QP_CTX_SIZE,
853 256);
854 iwqp->q2_ctx_mem.va = dma_alloc_coherent(dev->hw->device,
855 iwqp->q2_ctx_mem.size,
856 &iwqp->q2_ctx_mem.pa,
857 GFP_KERNEL);
858 if (!iwqp->q2_ctx_mem.va)
859 return -ENOMEM;
860
861 init_info.q2 = iwqp->q2_ctx_mem.va;
862 init_info.q2_pa = iwqp->q2_ctx_mem.pa;
863 init_info.host_ctx = (__le64 *)(init_info.q2 + IRDMA_Q2_BUF_SIZE);
864 init_info.host_ctx_pa = init_info.q2_pa + IRDMA_Q2_BUF_SIZE;
865
866 if (init_attr->qp_type == IB_QPT_GSI)
867 qp_num = 1;
868 else
869 err_code = irdma_alloc_rsrc(rf, rf->allocated_qps, rf->max_qp,
870 &qp_num, &rf->next_qp);
871 if (err_code)
872 goto error;
873
874 iwqp->iwpd = iwpd;
875 iwqp->ibqp.qp_num = qp_num;
876 qp = &iwqp->sc_qp;
877 iwqp->iwscq = to_iwcq(init_attr->send_cq);
878 iwqp->iwrcq = to_iwcq(init_attr->recv_cq);
879 iwqp->host_ctx.va = init_info.host_ctx;
880 iwqp->host_ctx.pa = init_info.host_ctx_pa;
881 iwqp->host_ctx.size = IRDMA_QP_CTX_SIZE;
882
883 init_info.pd = &iwpd->sc_pd;
884 init_info.qp_uk_init_info.qp_id = iwqp->ibqp.qp_num;
885 if (!rdma_protocol_roce(&iwdev->ibdev, 1))
886 init_info.qp_uk_init_info.first_sq_wq = 1;
887 iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp;
888 init_waitqueue_head(&iwqp->waitq);
889 init_waitqueue_head(&iwqp->mod_qp_waitq);
890
891 if (udata) {
892 err_code = ib_copy_from_udata(&req, udata,
893 min(sizeof(req), udata->inlen));
894 if (err_code) {
895 ibdev_dbg(&iwdev->ibdev,
896 "VERBS: ib_copy_from_data fail\n");
897 goto error;
898 }
899
900 iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx;
901 iwqp->user_mode = 1;
902 if (req.user_wqe_bufs) {
903 struct irdma_ucontext *ucontext =
904 rdma_udata_to_drv_context(udata,
905 struct irdma_ucontext,
906 ibucontext);
907
908 init_info.qp_uk_init_info.legacy_mode = ucontext->legacy_mode;
909 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
910 iwqp->iwpbl = irdma_get_pbl((unsigned long)req.user_wqe_bufs,
911 &ucontext->qp_reg_mem_list);
912 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
913
914 if (!iwqp->iwpbl) {
915 err_code = -ENODATA;
916 ibdev_dbg(&iwdev->ibdev, "VERBS: no pbl info\n");
917 goto error;
918 }
919 }
920 init_info.qp_uk_init_info.abi_ver = iwpd->sc_pd.abi_ver;
921 irdma_setup_virt_qp(iwdev, iwqp, &init_info);
922 } else {
923 INIT_DELAYED_WORK(&iwqp->dwork_flush, irdma_flush_worker);
924 init_info.qp_uk_init_info.abi_ver = IRDMA_ABI_VER;
925 err_code = irdma_setup_kmode_qp(iwdev, iwqp, &init_info, init_attr);
926 }
927
928 if (err_code) {
929 ibdev_dbg(&iwdev->ibdev, "VERBS: setup qp failed\n");
930 goto error;
931 }
932
933 if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
934 if (init_attr->qp_type == IB_QPT_RC) {
935 init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_ROCE_RC;
936 init_info.qp_uk_init_info.qp_caps = IRDMA_SEND_WITH_IMM |
937 IRDMA_WRITE_WITH_IMM |
938 IRDMA_ROCE;
939 } else {
940 init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_ROCE_UD;
941 init_info.qp_uk_init_info.qp_caps = IRDMA_SEND_WITH_IMM |
942 IRDMA_ROCE;
943 }
944 } else {
945 init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_IWARP;
946 init_info.qp_uk_init_info.qp_caps = IRDMA_WRITE_WITH_IMM;
947 }
948
949 if (dev->hw_attrs.uk_attrs.hw_rev > IRDMA_GEN_1)
950 init_info.qp_uk_init_info.qp_caps |= IRDMA_PUSH_MODE;
951
952 err_code = irdma_sc_qp_init(qp, &init_info);
953 if (err_code) {
954 ibdev_dbg(&iwdev->ibdev, "VERBS: qp_init fail\n");
955 goto error;
956 }
957
958 ctx_info = &iwqp->ctx_info;
959 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
960 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
961
962 if (rdma_protocol_roce(&iwdev->ibdev, 1))
963 irdma_roce_fill_and_set_qpctx_info(iwqp, ctx_info);
964 else
965 irdma_iw_fill_and_set_qpctx_info(iwqp, ctx_info);
966
967 err_code = irdma_cqp_create_qp_cmd(iwqp);
968 if (err_code)
969 goto error;
970
971 refcount_set(&iwqp->refcnt, 1);
972 spin_lock_init(&iwqp->lock);
973 spin_lock_init(&iwqp->sc_qp.pfpdu.lock);
974 iwqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? 1 : 0;
975 rf->qp_table[qp_num] = iwqp;
976 iwqp->max_send_wr = sq_size;
977 iwqp->max_recv_wr = rq_size;
978
979 if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
980 if (dev->ws_add(&iwdev->vsi, 0)) {
981 irdma_cqp_qp_destroy_cmd(&rf->sc_dev, &iwqp->sc_qp);
982 err_code = -EINVAL;
983 goto error;
984 }
985
986 irdma_qp_add_qos(&iwqp->sc_qp);
987 }
988
989 if (udata) {
990 /* GEN_1 legacy support with libi40iw does not have expanded uresp struct */
991 if (udata->outlen < sizeof(uresp)) {
992 uresp.lsmm = 1;
993 uresp.push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX_GEN_1;
994 } else {
995 if (rdma_protocol_iwarp(&iwdev->ibdev, 1))
996 uresp.lsmm = 1;
997 }
998 uresp.actual_sq_size = sq_size;
999 uresp.actual_rq_size = rq_size;
1000 uresp.qp_id = qp_num;
1001 uresp.qp_caps = qp->qp_uk.qp_caps;
1002
1003 err_code = ib_copy_to_udata(udata, &uresp,
1004 min(sizeof(uresp), udata->outlen));
1005 if (err_code) {
1006 ibdev_dbg(&iwdev->ibdev, "VERBS: copy_to_udata failed\n");
1007 irdma_destroy_qp(&iwqp->ibqp, udata);
1008 return err_code;
1009 }
1010 }
1011
1012 init_completion(&iwqp->free_qp);
1013 return 0;
1014
1015 error:
1016 irdma_free_qp_rsrc(iwqp);
1017 return err_code;
1018 }
1019
1020 static int irdma_get_ib_acc_flags(struct irdma_qp *iwqp)
1021 {
1022 int acc_flags = 0;
1023
1024 if (rdma_protocol_roce(iwqp->ibqp.device, 1)) {
1025 if (iwqp->roce_info.wr_rdresp_en) {
1026 acc_flags |= IB_ACCESS_LOCAL_WRITE;
1027 acc_flags |= IB_ACCESS_REMOTE_WRITE;
1028 }
1029 if (iwqp->roce_info.rd_en)
1030 acc_flags |= IB_ACCESS_REMOTE_READ;
1031 if (iwqp->roce_info.bind_en)
1032 acc_flags |= IB_ACCESS_MW_BIND;
1033 } else {
1034 if (iwqp->iwarp_info.wr_rdresp_en) {
1035 acc_flags |= IB_ACCESS_LOCAL_WRITE;
1036 acc_flags |= IB_ACCESS_REMOTE_WRITE;
1037 }
1038 if (iwqp->iwarp_info.rd_en)
1039 acc_flags |= IB_ACCESS_REMOTE_READ;
1040 if (iwqp->iwarp_info.bind_en)
1041 acc_flags |= IB_ACCESS_MW_BIND;
1042 }
1043 return acc_flags;
1044 }
1045
1046 /**
1047 * irdma_query_qp - query qp attributes
1048 * @ibqp: qp pointer
1049 * @attr: attributes pointer
1050 * @attr_mask: Not used
1051 * @init_attr: qp attributes to return
1052 */
1053 static int irdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1054 int attr_mask, struct ib_qp_init_attr *init_attr)
1055 {
1056 struct irdma_qp *iwqp = to_iwqp(ibqp);
1057 struct irdma_sc_qp *qp = &iwqp->sc_qp;
1058
1059 memset(attr, 0, sizeof(*attr));
1060 memset(init_attr, 0, sizeof(*init_attr));
1061
1062 attr->qp_state = iwqp->ibqp_state;
1063 attr->cur_qp_state = iwqp->ibqp_state;
1064 attr->cap.max_send_wr = iwqp->max_send_wr;
1065 attr->cap.max_recv_wr = iwqp->max_recv_wr;
1066 attr->cap.max_inline_data = qp->qp_uk.max_inline_data;
1067 attr->cap.max_send_sge = qp->qp_uk.max_sq_frag_cnt;
1068 attr->cap.max_recv_sge = qp->qp_uk.max_rq_frag_cnt;
1069 attr->qp_access_flags = irdma_get_ib_acc_flags(iwqp);
1070 attr->port_num = 1;
1071 if (rdma_protocol_roce(ibqp->device, 1)) {
1072 attr->path_mtu = ib_mtu_int_to_enum(iwqp->udp_info.snd_mss);
1073 attr->qkey = iwqp->roce_info.qkey;
1074 attr->rq_psn = iwqp->udp_info.epsn;
1075 attr->sq_psn = iwqp->udp_info.psn_nxt;
1076 attr->dest_qp_num = iwqp->roce_info.dest_qp;
1077 attr->pkey_index = iwqp->roce_info.p_key;
1078 attr->retry_cnt = iwqp->udp_info.rexmit_thresh;
1079 attr->rnr_retry = iwqp->udp_info.rnr_nak_thresh;
1080 attr->max_rd_atomic = iwqp->roce_info.ord_size;
1081 attr->max_dest_rd_atomic = iwqp->roce_info.ird_size;
1082 }
1083
1084 init_attr->event_handler = iwqp->ibqp.event_handler;
1085 init_attr->qp_context = iwqp->ibqp.qp_context;
1086 init_attr->send_cq = iwqp->ibqp.send_cq;
1087 init_attr->recv_cq = iwqp->ibqp.recv_cq;
1088 init_attr->cap = attr->cap;
1089
1090 return 0;
1091 }
1092
1093 /**
1094 * irdma_query_pkey - Query partition key
1095 * @ibdev: device pointer from stack
1096 * @port: port number
1097 * @index: index of pkey
1098 * @pkey: pointer to store the pkey
1099 */
1100 static int irdma_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
1101 u16 *pkey)
1102 {
1103 if (index >= IRDMA_PKEY_TBL_SZ)
1104 return -EINVAL;
1105
1106 *pkey = IRDMA_DEFAULT_PKEY;
1107 return 0;
1108 }
1109
1110 /**
1111 * irdma_modify_qp_roce - modify qp request
1112 * @ibqp: qp's pointer for modify
1113 * @attr: access attributes
1114 * @attr_mask: state mask
1115 * @udata: user data
1116 */
1117 int irdma_modify_qp_roce(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1118 int attr_mask, struct ib_udata *udata)
1119 {
1120 struct irdma_pd *iwpd = to_iwpd(ibqp->pd);
1121 struct irdma_qp *iwqp = to_iwqp(ibqp);
1122 struct irdma_device *iwdev = iwqp->iwdev;
1123 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
1124 struct irdma_qp_host_ctx_info *ctx_info;
1125 struct irdma_roce_offload_info *roce_info;
1126 struct irdma_udp_offload_info *udp_info;
1127 struct irdma_modify_qp_info info = {};
1128 struct irdma_modify_qp_resp uresp = {};
1129 struct irdma_modify_qp_req ureq = {};
1130 unsigned long flags;
1131 u8 issue_modify_qp = 0;
1132 int ret = 0;
1133
1134 ctx_info = &iwqp->ctx_info;
1135 roce_info = &iwqp->roce_info;
1136 udp_info = &iwqp->udp_info;
1137
1138 if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
1139 return -EOPNOTSUPP;
1140
1141 if (attr_mask & IB_QP_DEST_QPN)
1142 roce_info->dest_qp = attr->dest_qp_num;
1143
1144 if (attr_mask & IB_QP_PKEY_INDEX) {
1145 ret = irdma_query_pkey(ibqp->device, 0, attr->pkey_index,
1146 &roce_info->p_key);
1147 if (ret)
1148 return ret;
1149 }
1150
1151 if (attr_mask & IB_QP_QKEY)
1152 roce_info->qkey = attr->qkey;
1153
1154 if (attr_mask & IB_QP_PATH_MTU)
1155 udp_info->snd_mss = ib_mtu_enum_to_int(attr->path_mtu);
1156
1157 if (attr_mask & IB_QP_SQ_PSN) {
1158 udp_info->psn_nxt = attr->sq_psn;
1159 udp_info->lsn = 0xffff;
1160 udp_info->psn_una = attr->sq_psn;
1161 udp_info->psn_max = attr->sq_psn;
1162 }
1163
1164 if (attr_mask & IB_QP_RQ_PSN)
1165 udp_info->epsn = attr->rq_psn;
1166
1167 if (attr_mask & IB_QP_RNR_RETRY)
1168 udp_info->rnr_nak_thresh = attr->rnr_retry;
1169
1170 if (attr_mask & IB_QP_RETRY_CNT)
1171 udp_info->rexmit_thresh = attr->retry_cnt;
1172
1173 ctx_info->roce_info->pd_id = iwpd->sc_pd.pd_id;
1174
1175 if (attr_mask & IB_QP_AV) {
1176 struct irdma_av *av = &iwqp->roce_ah.av;
1177 const struct ib_gid_attr *sgid_attr;
1178 u16 vlan_id = VLAN_N_VID;
1179 u32 local_ip[4];
1180
1181 memset(&iwqp->roce_ah, 0, sizeof(iwqp->roce_ah));
1182 if (attr->ah_attr.ah_flags & IB_AH_GRH) {
1183 udp_info->ttl = attr->ah_attr.grh.hop_limit;
1184 udp_info->flow_label = attr->ah_attr.grh.flow_label;
1185 udp_info->tos = attr->ah_attr.grh.traffic_class;
1186 udp_info->src_port =
1187 rdma_get_udp_sport(udp_info->flow_label,
1188 ibqp->qp_num,
1189 roce_info->dest_qp);
1190 irdma_qp_rem_qos(&iwqp->sc_qp);
1191 dev->ws_remove(iwqp->sc_qp.vsi, ctx_info->user_pri);
1192 ctx_info->user_pri = rt_tos2priority(udp_info->tos);
1193 iwqp->sc_qp.user_pri = ctx_info->user_pri;
1194 if (dev->ws_add(iwqp->sc_qp.vsi, ctx_info->user_pri))
1195 return -ENOMEM;
1196 irdma_qp_add_qos(&iwqp->sc_qp);
1197 }
1198 sgid_attr = attr->ah_attr.grh.sgid_attr;
1199 ret = rdma_read_gid_l2_fields(sgid_attr, &vlan_id,
1200 ctx_info->roce_info->mac_addr);
1201 if (ret)
1202 return ret;
1203
1204 if (vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
1205 vlan_id = 0;
1206 if (vlan_id < VLAN_N_VID) {
1207 udp_info->insert_vlan_tag = true;
1208 udp_info->vlan_tag = vlan_id |
1209 ctx_info->user_pri << VLAN_PRIO_SHIFT;
1210 } else {
1211 udp_info->insert_vlan_tag = false;
1212 }
1213
1214 av->attrs = attr->ah_attr;
1215 rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
1216 rdma_gid2ip((struct sockaddr *)&av->dgid_addr, &attr->ah_attr.grh.dgid);
1217 if (av->net_type == RDMA_NETWORK_IPV6) {
1218 __be32 *daddr =
1219 av->dgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32;
1220 __be32 *saddr =
1221 av->sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32;
1222
1223 irdma_copy_ip_ntohl(&udp_info->dest_ip_addr[0], daddr);
1224 irdma_copy_ip_ntohl(&udp_info->local_ipaddr[0], saddr);
1225
1226 udp_info->ipv4 = false;
1227 irdma_copy_ip_ntohl(local_ip, daddr);
1228
1229 udp_info->arp_idx = irdma_arp_table(iwdev->rf,
1230 &local_ip[0],
1231 false, NULL,
1232 IRDMA_ARP_RESOLVE);
1233 } else if (av->net_type == RDMA_NETWORK_IPV4) {
1234 __be32 saddr = av->sgid_addr.saddr_in.sin_addr.s_addr;
1235 __be32 daddr = av->dgid_addr.saddr_in.sin_addr.s_addr;
1236
1237 local_ip[0] = ntohl(daddr);
1238
1239 udp_info->ipv4 = true;
1240 udp_info->dest_ip_addr[0] = 0;
1241 udp_info->dest_ip_addr[1] = 0;
1242 udp_info->dest_ip_addr[2] = 0;
1243 udp_info->dest_ip_addr[3] = local_ip[0];
1244
1245 udp_info->local_ipaddr[0] = 0;
1246 udp_info->local_ipaddr[1] = 0;
1247 udp_info->local_ipaddr[2] = 0;
1248 udp_info->local_ipaddr[3] = ntohl(saddr);
1249 }
1250 udp_info->arp_idx =
1251 irdma_add_arp(iwdev->rf, local_ip, udp_info->ipv4,
1252 attr->ah_attr.roce.dmac);
1253 }
1254
1255 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
1256 if (attr->max_rd_atomic > dev->hw_attrs.max_hw_ord) {
1257 ibdev_err(&iwdev->ibdev,
1258 "rd_atomic = %d, above max_hw_ord=%d\n",
1259 attr->max_rd_atomic,
1260 dev->hw_attrs.max_hw_ord);
1261 return -EINVAL;
1262 }
1263 if (attr->max_rd_atomic)
1264 roce_info->ord_size = attr->max_rd_atomic;
1265 info.ord_valid = true;
1266 }
1267
1268 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
1269 if (attr->max_dest_rd_atomic > dev->hw_attrs.max_hw_ird) {
1270 ibdev_err(&iwdev->ibdev,
1271 "rd_atomic = %d, above max_hw_ird=%d\n",
1272 attr->max_rd_atomic,
1273 dev->hw_attrs.max_hw_ird);
1274 return -EINVAL;
1275 }
1276 if (attr->max_dest_rd_atomic)
1277 roce_info->ird_size = attr->max_dest_rd_atomic;
1278 }
1279
1280 if (attr_mask & IB_QP_ACCESS_FLAGS) {
1281 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
1282 roce_info->wr_rdresp_en = true;
1283 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
1284 roce_info->wr_rdresp_en = true;
1285 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
1286 roce_info->rd_en = true;
1287 }
1288
1289 wait_event(iwqp->mod_qp_waitq, !atomic_read(&iwqp->hw_mod_qp_pend));
1290
1291 ibdev_dbg(&iwdev->ibdev,
1292 "VERBS: caller: %pS qp_id=%d to_ibqpstate=%d ibqpstate=%d irdma_qpstate=%d attr_mask=0x%x\n",
1293 __builtin_return_address(0), ibqp->qp_num, attr->qp_state,
1294 iwqp->ibqp_state, iwqp->iwarp_state, attr_mask);
1295
1296 spin_lock_irqsave(&iwqp->lock, flags);
1297 if (attr_mask & IB_QP_STATE) {
1298 if (!ib_modify_qp_is_ok(iwqp->ibqp_state, attr->qp_state,
1299 iwqp->ibqp.qp_type, attr_mask)) {
1300 ibdev_warn(&iwdev->ibdev, "modify_qp invalid for qp_id=%d, old_state=0x%x, new_state=0x%x\n",
1301 iwqp->ibqp.qp_num, iwqp->ibqp_state,
1302 attr->qp_state);
1303 ret = -EINVAL;
1304 goto exit;
1305 }
1306 info.curr_iwarp_state = iwqp->iwarp_state;
1307
1308 switch (attr->qp_state) {
1309 case IB_QPS_INIT:
1310 if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) {
1311 ret = -EINVAL;
1312 goto exit;
1313 }
1314
1315 if (iwqp->iwarp_state == IRDMA_QP_STATE_INVALID) {
1316 info.next_iwarp_state = IRDMA_QP_STATE_IDLE;
1317 issue_modify_qp = 1;
1318 }
1319 break;
1320 case IB_QPS_RTR:
1321 if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) {
1322 ret = -EINVAL;
1323 goto exit;
1324 }
1325 info.arp_cache_idx_valid = true;
1326 info.cq_num_valid = true;
1327 info.next_iwarp_state = IRDMA_QP_STATE_RTR;
1328 issue_modify_qp = 1;
1329 break;
1330 case IB_QPS_RTS:
1331 if (iwqp->ibqp_state < IB_QPS_RTR ||
1332 iwqp->ibqp_state == IB_QPS_ERR) {
1333 ret = -EINVAL;
1334 goto exit;
1335 }
1336
1337 info.arp_cache_idx_valid = true;
1338 info.cq_num_valid = true;
1339 info.ord_valid = true;
1340 info.next_iwarp_state = IRDMA_QP_STATE_RTS;
1341 issue_modify_qp = 1;
1342 if (iwdev->push_mode && udata &&
1343 iwqp->sc_qp.push_idx == IRDMA_INVALID_PUSH_PAGE_INDEX &&
1344 dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1345 spin_unlock_irqrestore(&iwqp->lock, flags);
1346 irdma_alloc_push_page(iwqp);
1347 spin_lock_irqsave(&iwqp->lock, flags);
1348 }
1349 break;
1350 case IB_QPS_SQD:
1351 if (iwqp->iwarp_state == IRDMA_QP_STATE_SQD)
1352 goto exit;
1353
1354 if (iwqp->iwarp_state != IRDMA_QP_STATE_RTS) {
1355 ret = -EINVAL;
1356 goto exit;
1357 }
1358
1359 info.next_iwarp_state = IRDMA_QP_STATE_SQD;
1360 issue_modify_qp = 1;
1361 break;
1362 case IB_QPS_SQE:
1363 case IB_QPS_ERR:
1364 case IB_QPS_RESET:
1365 if (iwqp->iwarp_state == IRDMA_QP_STATE_RTS) {
1366 spin_unlock_irqrestore(&iwqp->lock, flags);
1367 info.next_iwarp_state = IRDMA_QP_STATE_SQD;
1368 irdma_hw_modify_qp(iwdev, iwqp, &info, true);
1369 spin_lock_irqsave(&iwqp->lock, flags);
1370 }
1371
1372 if (iwqp->iwarp_state == IRDMA_QP_STATE_ERROR) {
1373 spin_unlock_irqrestore(&iwqp->lock, flags);
1374 if (udata) {
1375 if (ib_copy_from_udata(&ureq, udata,
1376 min(sizeof(ureq), udata->inlen)))
1377 return -EINVAL;
1378
1379 irdma_flush_wqes(iwqp,
1380 (ureq.sq_flush ? IRDMA_FLUSH_SQ : 0) |
1381 (ureq.rq_flush ? IRDMA_FLUSH_RQ : 0) |
1382 IRDMA_REFLUSH);
1383 }
1384 return 0;
1385 }
1386
1387 info.next_iwarp_state = IRDMA_QP_STATE_ERROR;
1388 issue_modify_qp = 1;
1389 break;
1390 default:
1391 ret = -EINVAL;
1392 goto exit;
1393 }
1394
1395 iwqp->ibqp_state = attr->qp_state;
1396 }
1397
1398 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
1399 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
1400 irdma_sc_qp_setctx_roce(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
1401 spin_unlock_irqrestore(&iwqp->lock, flags);
1402
1403 if (attr_mask & IB_QP_STATE) {
1404 if (issue_modify_qp) {
1405 ctx_info->rem_endpoint_idx = udp_info->arp_idx;
1406 if (irdma_hw_modify_qp(iwdev, iwqp, &info, true))
1407 return -EINVAL;
1408 spin_lock_irqsave(&iwqp->lock, flags);
1409 if (iwqp->iwarp_state == info.curr_iwarp_state) {
1410 iwqp->iwarp_state = info.next_iwarp_state;
1411 iwqp->ibqp_state = attr->qp_state;
1412 }
1413 if (iwqp->ibqp_state > IB_QPS_RTS &&
1414 !iwqp->flush_issued) {
1415 spin_unlock_irqrestore(&iwqp->lock, flags);
1416 irdma_flush_wqes(iwqp, IRDMA_FLUSH_SQ |
1417 IRDMA_FLUSH_RQ |
1418 IRDMA_FLUSH_WAIT);
1419 iwqp->flush_issued = 1;
1420 } else {
1421 spin_unlock_irqrestore(&iwqp->lock, flags);
1422 }
1423 } else {
1424 iwqp->ibqp_state = attr->qp_state;
1425 }
1426 if (udata && dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1427 struct irdma_ucontext *ucontext;
1428
1429 ucontext = rdma_udata_to_drv_context(udata,
1430 struct irdma_ucontext, ibucontext);
1431 if (iwqp->sc_qp.push_idx != IRDMA_INVALID_PUSH_PAGE_INDEX &&
1432 !iwqp->push_wqe_mmap_entry &&
1433 !irdma_setup_push_mmap_entries(ucontext, iwqp,
1434 &uresp.push_wqe_mmap_key, &uresp.push_db_mmap_key)) {
1435 uresp.push_valid = 1;
1436 uresp.push_offset = iwqp->sc_qp.push_offset;
1437 }
1438 ret = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp),
1439 udata->outlen));
1440 if (ret) {
1441 irdma_remove_push_mmap_entries(iwqp);
1442 ibdev_dbg(&iwdev->ibdev,
1443 "VERBS: copy_to_udata failed\n");
1444 return ret;
1445 }
1446 }
1447 }
1448
1449 return 0;
1450 exit:
1451 spin_unlock_irqrestore(&iwqp->lock, flags);
1452
1453 return ret;
1454 }
1455
1456 /**
1457 * irdma_modify_qp - modify qp request
1458 * @ibqp: qp's pointer for modify
1459 * @attr: access attributes
1460 * @attr_mask: state mask
1461 * @udata: user data
1462 */
1463 int irdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
1464 struct ib_udata *udata)
1465 {
1466 struct irdma_qp *iwqp = to_iwqp(ibqp);
1467 struct irdma_device *iwdev = iwqp->iwdev;
1468 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev;
1469 struct irdma_qp_host_ctx_info *ctx_info;
1470 struct irdma_tcp_offload_info *tcp_info;
1471 struct irdma_iwarp_offload_info *offload_info;
1472 struct irdma_modify_qp_info info = {};
1473 struct irdma_modify_qp_resp uresp = {};
1474 struct irdma_modify_qp_req ureq = {};
1475 u8 issue_modify_qp = 0;
1476 u8 dont_wait = 0;
1477 int err;
1478 unsigned long flags;
1479
1480 if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
1481 return -EOPNOTSUPP;
1482
1483 ctx_info = &iwqp->ctx_info;
1484 offload_info = &iwqp->iwarp_info;
1485 tcp_info = &iwqp->tcp_info;
1486 wait_event(iwqp->mod_qp_waitq, !atomic_read(&iwqp->hw_mod_qp_pend));
1487 ibdev_dbg(&iwdev->ibdev,
1488 "VERBS: caller: %pS qp_id=%d to_ibqpstate=%d ibqpstate=%d irdma_qpstate=%d last_aeq=%d hw_tcp_state=%d hw_iwarp_state=%d attr_mask=0x%x\n",
1489 __builtin_return_address(0), ibqp->qp_num, attr->qp_state,
1490 iwqp->ibqp_state, iwqp->iwarp_state, iwqp->last_aeq,
1491 iwqp->hw_tcp_state, iwqp->hw_iwarp_state, attr_mask);
1492
1493 spin_lock_irqsave(&iwqp->lock, flags);
1494 if (attr_mask & IB_QP_STATE) {
1495 info.curr_iwarp_state = iwqp->iwarp_state;
1496 switch (attr->qp_state) {
1497 case IB_QPS_INIT:
1498 case IB_QPS_RTR:
1499 if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) {
1500 err = -EINVAL;
1501 goto exit;
1502 }
1503
1504 if (iwqp->iwarp_state == IRDMA_QP_STATE_INVALID) {
1505 info.next_iwarp_state = IRDMA_QP_STATE_IDLE;
1506 issue_modify_qp = 1;
1507 }
1508 if (iwdev->push_mode && udata &&
1509 iwqp->sc_qp.push_idx == IRDMA_INVALID_PUSH_PAGE_INDEX &&
1510 dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1511 spin_unlock_irqrestore(&iwqp->lock, flags);
1512 irdma_alloc_push_page(iwqp);
1513 spin_lock_irqsave(&iwqp->lock, flags);
1514 }
1515 break;
1516 case IB_QPS_RTS:
1517 if (iwqp->iwarp_state > IRDMA_QP_STATE_RTS ||
1518 !iwqp->cm_id) {
1519 err = -EINVAL;
1520 goto exit;
1521 }
1522
1523 issue_modify_qp = 1;
1524 iwqp->hw_tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
1525 iwqp->hte_added = 1;
1526 info.next_iwarp_state = IRDMA_QP_STATE_RTS;
1527 info.tcp_ctx_valid = true;
1528 info.ord_valid = true;
1529 info.arp_cache_idx_valid = true;
1530 info.cq_num_valid = true;
1531 break;
1532 case IB_QPS_SQD:
1533 if (iwqp->hw_iwarp_state > IRDMA_QP_STATE_RTS) {
1534 err = 0;
1535 goto exit;
1536 }
1537
1538 if (iwqp->iwarp_state == IRDMA_QP_STATE_CLOSING ||
1539 iwqp->iwarp_state < IRDMA_QP_STATE_RTS) {
1540 err = 0;
1541 goto exit;
1542 }
1543
1544 if (iwqp->iwarp_state > IRDMA_QP_STATE_CLOSING) {
1545 err = -EINVAL;
1546 goto exit;
1547 }
1548
1549 info.next_iwarp_state = IRDMA_QP_STATE_CLOSING;
1550 issue_modify_qp = 1;
1551 break;
1552 case IB_QPS_SQE:
1553 if (iwqp->iwarp_state >= IRDMA_QP_STATE_TERMINATE) {
1554 err = -EINVAL;
1555 goto exit;
1556 }
1557
1558 info.next_iwarp_state = IRDMA_QP_STATE_TERMINATE;
1559 issue_modify_qp = 1;
1560 break;
1561 case IB_QPS_ERR:
1562 case IB_QPS_RESET:
1563 if (iwqp->iwarp_state == IRDMA_QP_STATE_ERROR) {
1564 spin_unlock_irqrestore(&iwqp->lock, flags);
1565 if (udata) {
1566 if (ib_copy_from_udata(&ureq, udata,
1567 min(sizeof(ureq), udata->inlen)))
1568 return -EINVAL;
1569
1570 irdma_flush_wqes(iwqp,
1571 (ureq.sq_flush ? IRDMA_FLUSH_SQ : 0) |
1572 (ureq.rq_flush ? IRDMA_FLUSH_RQ : 0) |
1573 IRDMA_REFLUSH);
1574 }
1575 return 0;
1576 }
1577
1578 if (iwqp->sc_qp.term_flags) {
1579 spin_unlock_irqrestore(&iwqp->lock, flags);
1580 irdma_terminate_del_timer(&iwqp->sc_qp);
1581 spin_lock_irqsave(&iwqp->lock, flags);
1582 }
1583 info.next_iwarp_state = IRDMA_QP_STATE_ERROR;
1584 if (iwqp->hw_tcp_state > IRDMA_TCP_STATE_CLOSED &&
1585 iwdev->iw_status &&
1586 iwqp->hw_tcp_state != IRDMA_TCP_STATE_TIME_WAIT)
1587 info.reset_tcp_conn = true;
1588 else
1589 dont_wait = 1;
1590
1591 issue_modify_qp = 1;
1592 info.next_iwarp_state = IRDMA_QP_STATE_ERROR;
1593 break;
1594 default:
1595 err = -EINVAL;
1596 goto exit;
1597 }
1598
1599 iwqp->ibqp_state = attr->qp_state;
1600 }
1601 if (attr_mask & IB_QP_ACCESS_FLAGS) {
1602 ctx_info->iwarp_info_valid = true;
1603 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
1604 offload_info->wr_rdresp_en = true;
1605 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
1606 offload_info->wr_rdresp_en = true;
1607 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
1608 offload_info->rd_en = true;
1609 }
1610
1611 if (ctx_info->iwarp_info_valid) {
1612 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
1613 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
1614 irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
1615 }
1616 spin_unlock_irqrestore(&iwqp->lock, flags);
1617
1618 if (attr_mask & IB_QP_STATE) {
1619 if (issue_modify_qp) {
1620 ctx_info->rem_endpoint_idx = tcp_info->arp_idx;
1621 if (irdma_hw_modify_qp(iwdev, iwqp, &info, true))
1622 return -EINVAL;
1623 }
1624
1625 spin_lock_irqsave(&iwqp->lock, flags);
1626 if (iwqp->iwarp_state == info.curr_iwarp_state) {
1627 iwqp->iwarp_state = info.next_iwarp_state;
1628 iwqp->ibqp_state = attr->qp_state;
1629 }
1630 spin_unlock_irqrestore(&iwqp->lock, flags);
1631 }
1632
1633 if (issue_modify_qp && iwqp->ibqp_state > IB_QPS_RTS) {
1634 if (dont_wait) {
1635 if (iwqp->hw_tcp_state) {
1636 spin_lock_irqsave(&iwqp->lock, flags);
1637 iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED;
1638 iwqp->last_aeq = IRDMA_AE_RESET_SENT;
1639 spin_unlock_irqrestore(&iwqp->lock, flags);
1640 }
1641 irdma_cm_disconn(iwqp);
1642 } else {
1643 int close_timer_started;
1644
1645 spin_lock_irqsave(&iwdev->cm_core.ht_lock, flags);
1646
1647 if (iwqp->cm_node) {
1648 refcount_inc(&iwqp->cm_node->refcnt);
1649 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
1650 close_timer_started = atomic_inc_return(&iwqp->close_timer_started);
1651 if (iwqp->cm_id && close_timer_started == 1)
1652 irdma_schedule_cm_timer(iwqp->cm_node,
1653 (struct irdma_puda_buf *)iwqp,
1654 IRDMA_TIMER_TYPE_CLOSE, 1, 0);
1655
1656 irdma_rem_ref_cm_node(iwqp->cm_node);
1657 } else {
1658 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
1659 }
1660 }
1661 }
1662 if (attr_mask & IB_QP_STATE && udata &&
1663 dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1664 struct irdma_ucontext *ucontext;
1665
1666 ucontext = rdma_udata_to_drv_context(udata,
1667 struct irdma_ucontext, ibucontext);
1668 if (iwqp->sc_qp.push_idx != IRDMA_INVALID_PUSH_PAGE_INDEX &&
1669 !iwqp->push_wqe_mmap_entry &&
1670 !irdma_setup_push_mmap_entries(ucontext, iwqp,
1671 &uresp.push_wqe_mmap_key, &uresp.push_db_mmap_key)) {
1672 uresp.push_valid = 1;
1673 uresp.push_offset = iwqp->sc_qp.push_offset;
1674 }
1675
1676 err = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp),
1677 udata->outlen));
1678 if (err) {
1679 irdma_remove_push_mmap_entries(iwqp);
1680 ibdev_dbg(&iwdev->ibdev,
1681 "VERBS: copy_to_udata failed\n");
1682 return err;
1683 }
1684 }
1685
1686 return 0;
1687 exit:
1688 spin_unlock_irqrestore(&iwqp->lock, flags);
1689
1690 return err;
1691 }
1692
1693 /**
1694 * irdma_cq_free_rsrc - free up resources for cq
1695 * @rf: RDMA PCI function
1696 * @iwcq: cq ptr
1697 */
1698 static void irdma_cq_free_rsrc(struct irdma_pci_f *rf, struct irdma_cq *iwcq)
1699 {
1700 struct irdma_sc_cq *cq = &iwcq->sc_cq;
1701
1702 if (!iwcq->user_mode) {
1703 dma_free_coherent(rf->sc_dev.hw->device, iwcq->kmem.size,
1704 iwcq->kmem.va, iwcq->kmem.pa);
1705 iwcq->kmem.va = NULL;
1706 dma_free_coherent(rf->sc_dev.hw->device,
1707 iwcq->kmem_shadow.size,
1708 iwcq->kmem_shadow.va, iwcq->kmem_shadow.pa);
1709 iwcq->kmem_shadow.va = NULL;
1710 }
1711
1712 irdma_free_rsrc(rf, rf->allocated_cqs, cq->cq_uk.cq_id);
1713 }
1714
1715 /**
1716 * irdma_free_cqbuf - worker to free a cq buffer
1717 * @work: provides access to the cq buffer to free
1718 */
1719 static void irdma_free_cqbuf(struct work_struct *work)
1720 {
1721 struct irdma_cq_buf *cq_buf = container_of(work, struct irdma_cq_buf, work);
1722
1723 dma_free_coherent(cq_buf->hw->device, cq_buf->kmem_buf.size,
1724 cq_buf->kmem_buf.va, cq_buf->kmem_buf.pa);
1725 cq_buf->kmem_buf.va = NULL;
1726 kfree(cq_buf);
1727 }
1728
1729 /**
1730 * irdma_process_resize_list - remove resized cq buffers from the resize_list
1731 * @iwcq: cq which owns the resize_list
1732 * @iwdev: irdma device
1733 * @lcqe_buf: the buffer where the last cqe is received
1734 */
1735 static int irdma_process_resize_list(struct irdma_cq *iwcq,
1736 struct irdma_device *iwdev,
1737 struct irdma_cq_buf *lcqe_buf)
1738 {
1739 struct list_head *tmp_node, *list_node;
1740 struct irdma_cq_buf *cq_buf;
1741 int cnt = 0;
1742
1743 list_for_each_safe(list_node, tmp_node, &iwcq->resize_list) {
1744 cq_buf = list_entry(list_node, struct irdma_cq_buf, list);
1745 if (cq_buf == lcqe_buf)
1746 return cnt;
1747
1748 list_del(&cq_buf->list);
1749 queue_work(iwdev->cleanup_wq, &cq_buf->work);
1750 cnt++;
1751 }
1752
1753 return cnt;
1754 }
1755
1756 /**
1757 * irdma_destroy_cq - destroy cq
1758 * @ib_cq: cq pointer
1759 * @udata: user data
1760 */
1761 static int irdma_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata)
1762 {
1763 struct irdma_device *iwdev = to_iwdev(ib_cq->device);
1764 struct irdma_cq *iwcq = to_iwcq(ib_cq);
1765 struct irdma_sc_cq *cq = &iwcq->sc_cq;
1766 struct irdma_sc_dev *dev = cq->dev;
1767 struct irdma_sc_ceq *ceq = dev->ceq[cq->ceq_id];
1768 struct irdma_ceq *iwceq = container_of(ceq, struct irdma_ceq, sc_ceq);
1769 unsigned long flags;
1770
1771 spin_lock_irqsave(&iwcq->lock, flags);
1772 if (!list_empty(&iwcq->cmpl_generated))
1773 irdma_remove_cmpls_list(iwcq);
1774 if (!list_empty(&iwcq->resize_list))
1775 irdma_process_resize_list(iwcq, iwdev, NULL);
1776 spin_unlock_irqrestore(&iwcq->lock, flags);
1777
1778 irdma_cq_wq_destroy(iwdev->rf, cq);
1779
1780 spin_lock_irqsave(&iwceq->ce_lock, flags);
1781 irdma_sc_cleanup_ceqes(cq, ceq);
1782 spin_unlock_irqrestore(&iwceq->ce_lock, flags);
1783 irdma_cq_free_rsrc(iwdev->rf, iwcq);
1784
1785 return 0;
1786 }
1787
1788 /**
1789 * irdma_resize_cq - resize cq
1790 * @ibcq: cq to be resized
1791 * @entries: desired cq size
1792 * @udata: user data
1793 */
1794 static int irdma_resize_cq(struct ib_cq *ibcq, int entries,
1795 struct ib_udata *udata)
1796 {
1797 struct irdma_cq *iwcq = to_iwcq(ibcq);
1798 struct irdma_sc_dev *dev = iwcq->sc_cq.dev;
1799 struct irdma_cqp_request *cqp_request;
1800 struct cqp_cmds_info *cqp_info;
1801 struct irdma_modify_cq_info *m_info;
1802 struct irdma_modify_cq_info info = {};
1803 struct irdma_dma_mem kmem_buf;
1804 struct irdma_cq_mr *cqmr_buf;
1805 struct irdma_pbl *iwpbl_buf;
1806 struct irdma_device *iwdev;
1807 struct irdma_pci_f *rf;
1808 struct irdma_cq_buf *cq_buf = NULL;
1809 unsigned long flags;
1810 int ret;
1811
1812 iwdev = to_iwdev(ibcq->device);
1813 rf = iwdev->rf;
1814
1815 if (!(rf->sc_dev.hw_attrs.uk_attrs.feature_flags &
1816 IRDMA_FEATURE_CQ_RESIZE))
1817 return -EOPNOTSUPP;
1818
1819 if (entries > rf->max_cqe)
1820 return -EINVAL;
1821
1822 if (!iwcq->user_mode) {
1823 entries++;
1824 if (rf->sc_dev.hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
1825 entries *= 2;
1826 }
1827
1828 info.cq_size = max(entries, 4);
1829
1830 if (info.cq_size == iwcq->sc_cq.cq_uk.cq_size - 1)
1831 return 0;
1832
1833 if (udata) {
1834 struct irdma_resize_cq_req req = {};
1835 struct irdma_ucontext *ucontext =
1836 rdma_udata_to_drv_context(udata, struct irdma_ucontext,
1837 ibucontext);
1838
1839 /* CQ resize not supported with legacy GEN_1 libi40iw */
1840 if (ucontext->legacy_mode)
1841 return -EOPNOTSUPP;
1842
1843 if (ib_copy_from_udata(&req, udata,
1844 min(sizeof(req), udata->inlen)))
1845 return -EINVAL;
1846
1847 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1848 iwpbl_buf = irdma_get_pbl((unsigned long)req.user_cq_buffer,
1849 &ucontext->cq_reg_mem_list);
1850 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1851
1852 if (!iwpbl_buf)
1853 return -ENOMEM;
1854
1855 cqmr_buf = &iwpbl_buf->cq_mr;
1856 if (iwpbl_buf->pbl_allocated) {
1857 info.virtual_map = true;
1858 info.pbl_chunk_size = 1;
1859 info.first_pm_pbl_idx = cqmr_buf->cq_pbl.idx;
1860 } else {
1861 info.cq_pa = cqmr_buf->cq_pbl.addr;
1862 }
1863 } else {
1864 /* Kmode CQ resize */
1865 int rsize;
1866
1867 rsize = info.cq_size * sizeof(struct irdma_cqe);
1868 kmem_buf.size = ALIGN(round_up(rsize, 256), 256);
1869 kmem_buf.va = dma_alloc_coherent(dev->hw->device,
1870 kmem_buf.size, &kmem_buf.pa,
1871 GFP_KERNEL);
1872 if (!kmem_buf.va)
1873 return -ENOMEM;
1874
1875 info.cq_base = kmem_buf.va;
1876 info.cq_pa = kmem_buf.pa;
1877 cq_buf = kzalloc(sizeof(*cq_buf), GFP_KERNEL);
1878 if (!cq_buf) {
1879 ret = -ENOMEM;
1880 goto error;
1881 }
1882 }
1883
1884 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
1885 if (!cqp_request) {
1886 ret = -ENOMEM;
1887 goto error;
1888 }
1889
1890 info.shadow_read_threshold = iwcq->sc_cq.shadow_read_threshold;
1891 info.cq_resize = true;
1892
1893 cqp_info = &cqp_request->info;
1894 m_info = &cqp_info->in.u.cq_modify.info;
1895 memcpy(m_info, &info, sizeof(*m_info));
1896
1897 cqp_info->cqp_cmd = IRDMA_OP_CQ_MODIFY;
1898 cqp_info->in.u.cq_modify.cq = &iwcq->sc_cq;
1899 cqp_info->in.u.cq_modify.scratch = (uintptr_t)cqp_request;
1900 cqp_info->post_sq = 1;
1901 ret = irdma_handle_cqp_op(rf, cqp_request);
1902 irdma_put_cqp_request(&rf->cqp, cqp_request);
1903 if (ret)
1904 goto error;
1905
1906 spin_lock_irqsave(&iwcq->lock, flags);
1907 if (cq_buf) {
1908 cq_buf->kmem_buf = iwcq->kmem;
1909 cq_buf->hw = dev->hw;
1910 memcpy(&cq_buf->cq_uk, &iwcq->sc_cq.cq_uk, sizeof(cq_buf->cq_uk));
1911 INIT_WORK(&cq_buf->work, irdma_free_cqbuf);
1912 list_add_tail(&cq_buf->list, &iwcq->resize_list);
1913 iwcq->kmem = kmem_buf;
1914 }
1915
1916 irdma_sc_cq_resize(&iwcq->sc_cq, &info);
1917 ibcq->cqe = info.cq_size - 1;
1918 spin_unlock_irqrestore(&iwcq->lock, flags);
1919
1920 return 0;
1921 error:
1922 if (!udata) {
1923 dma_free_coherent(dev->hw->device, kmem_buf.size, kmem_buf.va,
1924 kmem_buf.pa);
1925 kmem_buf.va = NULL;
1926 }
1927 kfree(cq_buf);
1928
1929 return ret;
1930 }
1931
1932 static inline int cq_validate_flags(u32 flags, u8 hw_rev)
1933 {
1934 /* GEN1 does not support CQ create flags */
1935 if (hw_rev == IRDMA_GEN_1)
1936 return flags ? -EOPNOTSUPP : 0;
1937
1938 return flags & ~IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION ? -EOPNOTSUPP : 0;
1939 }
1940
1941 /**
1942 * irdma_create_cq - create cq
1943 * @ibcq: CQ allocated
1944 * @attr: attributes for cq
1945 * @udata: user data
1946 */
1947 static int irdma_create_cq(struct ib_cq *ibcq,
1948 const struct ib_cq_init_attr *attr,
1949 struct ib_udata *udata)
1950 {
1951 struct ib_device *ibdev = ibcq->device;
1952 struct irdma_device *iwdev = to_iwdev(ibdev);
1953 struct irdma_pci_f *rf = iwdev->rf;
1954 struct irdma_cq *iwcq = to_iwcq(ibcq);
1955 u32 cq_num = 0;
1956 struct irdma_sc_cq *cq;
1957 struct irdma_sc_dev *dev = &rf->sc_dev;
1958 struct irdma_cq_init_info info = {};
1959 struct irdma_cqp_request *cqp_request;
1960 struct cqp_cmds_info *cqp_info;
1961 struct irdma_cq_uk_init_info *ukinfo = &info.cq_uk_init_info;
1962 unsigned long flags;
1963 int err_code;
1964 int entries = attr->cqe;
1965
1966 err_code = cq_validate_flags(attr->flags, dev->hw_attrs.uk_attrs.hw_rev);
1967 if (err_code)
1968 return err_code;
1969 err_code = irdma_alloc_rsrc(rf, rf->allocated_cqs, rf->max_cq, &cq_num,
1970 &rf->next_cq);
1971 if (err_code)
1972 return err_code;
1973
1974 cq = &iwcq->sc_cq;
1975 cq->back_cq = iwcq;
1976 spin_lock_init(&iwcq->lock);
1977 INIT_LIST_HEAD(&iwcq->resize_list);
1978 INIT_LIST_HEAD(&iwcq->cmpl_generated);
1979 info.dev = dev;
1980 ukinfo->cq_size = max(entries, 4);
1981 ukinfo->cq_id = cq_num;
1982 iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size;
1983 if (attr->comp_vector < rf->ceqs_count)
1984 info.ceq_id = attr->comp_vector;
1985 info.ceq_id_valid = true;
1986 info.ceqe_mask = 1;
1987 info.type = IRDMA_CQ_TYPE_IWARP;
1988 info.vsi = &iwdev->vsi;
1989
1990 if (udata) {
1991 struct irdma_ucontext *ucontext;
1992 struct irdma_create_cq_req req = {};
1993 struct irdma_cq_mr *cqmr;
1994 struct irdma_pbl *iwpbl;
1995 struct irdma_pbl *iwpbl_shadow;
1996 struct irdma_cq_mr *cqmr_shadow;
1997
1998 iwcq->user_mode = true;
1999 ucontext =
2000 rdma_udata_to_drv_context(udata, struct irdma_ucontext,
2001 ibucontext);
2002 if (ib_copy_from_udata(&req, udata,
2003 min(sizeof(req), udata->inlen))) {
2004 err_code = -EFAULT;
2005 goto cq_free_rsrc;
2006 }
2007
2008 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
2009 iwpbl = irdma_get_pbl((unsigned long)req.user_cq_buf,
2010 &ucontext->cq_reg_mem_list);
2011 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
2012 if (!iwpbl) {
2013 err_code = -EPROTO;
2014 goto cq_free_rsrc;
2015 }
2016
2017 iwcq->iwpbl = iwpbl;
2018 iwcq->cq_mem_size = 0;
2019 cqmr = &iwpbl->cq_mr;
2020
2021 if (rf->sc_dev.hw_attrs.uk_attrs.feature_flags &
2022 IRDMA_FEATURE_CQ_RESIZE && !ucontext->legacy_mode) {
2023 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
2024 iwpbl_shadow = irdma_get_pbl(
2025 (unsigned long)req.user_shadow_area,
2026 &ucontext->cq_reg_mem_list);
2027 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
2028
2029 if (!iwpbl_shadow) {
2030 err_code = -EPROTO;
2031 goto cq_free_rsrc;
2032 }
2033 iwcq->iwpbl_shadow = iwpbl_shadow;
2034 cqmr_shadow = &iwpbl_shadow->cq_mr;
2035 info.shadow_area_pa = cqmr_shadow->cq_pbl.addr;
2036 cqmr->split = true;
2037 } else {
2038 info.shadow_area_pa = cqmr->shadow;
2039 }
2040 if (iwpbl->pbl_allocated) {
2041 info.virtual_map = true;
2042 info.pbl_chunk_size = 1;
2043 info.first_pm_pbl_idx = cqmr->cq_pbl.idx;
2044 } else {
2045 info.cq_base_pa = cqmr->cq_pbl.addr;
2046 }
2047 } else {
2048 /* Kmode allocations */
2049 int rsize;
2050
2051 if (entries < 1 || entries > rf->max_cqe) {
2052 err_code = -EINVAL;
2053 goto cq_free_rsrc;
2054 }
2055
2056 entries++;
2057 if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
2058 entries *= 2;
2059 ukinfo->cq_size = entries;
2060
2061 rsize = info.cq_uk_init_info.cq_size * sizeof(struct irdma_cqe);
2062 iwcq->kmem.size = ALIGN(round_up(rsize, 256), 256);
2063 iwcq->kmem.va = dma_alloc_coherent(dev->hw->device,
2064 iwcq->kmem.size,
2065 &iwcq->kmem.pa, GFP_KERNEL);
2066 if (!iwcq->kmem.va) {
2067 err_code = -ENOMEM;
2068 goto cq_free_rsrc;
2069 }
2070
2071 iwcq->kmem_shadow.size = ALIGN(IRDMA_SHADOW_AREA_SIZE << 3,
2072 64);
2073 iwcq->kmem_shadow.va = dma_alloc_coherent(dev->hw->device,
2074 iwcq->kmem_shadow.size,
2075 &iwcq->kmem_shadow.pa,
2076 GFP_KERNEL);
2077 if (!iwcq->kmem_shadow.va) {
2078 err_code = -ENOMEM;
2079 goto cq_free_rsrc;
2080 }
2081 info.shadow_area_pa = iwcq->kmem_shadow.pa;
2082 ukinfo->shadow_area = iwcq->kmem_shadow.va;
2083 ukinfo->cq_base = iwcq->kmem.va;
2084 info.cq_base_pa = iwcq->kmem.pa;
2085 }
2086
2087 if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
2088 info.shadow_read_threshold = min(info.cq_uk_init_info.cq_size / 2,
2089 (u32)IRDMA_MAX_CQ_READ_THRESH);
2090
2091 if (irdma_sc_cq_init(cq, &info)) {
2092 ibdev_dbg(&iwdev->ibdev, "VERBS: init cq fail\n");
2093 err_code = -EPROTO;
2094 goto cq_free_rsrc;
2095 }
2096
2097 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
2098 if (!cqp_request) {
2099 err_code = -ENOMEM;
2100 goto cq_free_rsrc;
2101 }
2102
2103 cqp_info = &cqp_request->info;
2104 cqp_info->cqp_cmd = IRDMA_OP_CQ_CREATE;
2105 cqp_info->post_sq = 1;
2106 cqp_info->in.u.cq_create.cq = cq;
2107 cqp_info->in.u.cq_create.check_overflow = true;
2108 cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
2109 err_code = irdma_handle_cqp_op(rf, cqp_request);
2110 irdma_put_cqp_request(&rf->cqp, cqp_request);
2111 if (err_code)
2112 goto cq_free_rsrc;
2113
2114 if (udata) {
2115 struct irdma_create_cq_resp resp = {};
2116
2117 resp.cq_id = info.cq_uk_init_info.cq_id;
2118 resp.cq_size = info.cq_uk_init_info.cq_size;
2119 if (ib_copy_to_udata(udata, &resp,
2120 min(sizeof(resp), udata->outlen))) {
2121 ibdev_dbg(&iwdev->ibdev,
2122 "VERBS: copy to user data\n");
2123 err_code = -EPROTO;
2124 goto cq_destroy;
2125 }
2126 }
2127 return 0;
2128 cq_destroy:
2129 irdma_cq_wq_destroy(rf, cq);
2130 cq_free_rsrc:
2131 irdma_cq_free_rsrc(rf, iwcq);
2132
2133 return err_code;
2134 }
2135
2136 /**
2137 * irdma_get_mr_access - get hw MR access permissions from IB access flags
2138 * @access: IB access flags
2139 */
2140 static inline u16 irdma_get_mr_access(int access)
2141 {
2142 u16 hw_access = 0;
2143
2144 hw_access |= (access & IB_ACCESS_LOCAL_WRITE) ?
2145 IRDMA_ACCESS_FLAGS_LOCALWRITE : 0;
2146 hw_access |= (access & IB_ACCESS_REMOTE_WRITE) ?
2147 IRDMA_ACCESS_FLAGS_REMOTEWRITE : 0;
2148 hw_access |= (access & IB_ACCESS_REMOTE_READ) ?
2149 IRDMA_ACCESS_FLAGS_REMOTEREAD : 0;
2150 hw_access |= (access & IB_ACCESS_MW_BIND) ?
2151 IRDMA_ACCESS_FLAGS_BIND_WINDOW : 0;
2152 hw_access |= (access & IB_ZERO_BASED) ?
2153 IRDMA_ACCESS_FLAGS_ZERO_BASED : 0;
2154 hw_access |= IRDMA_ACCESS_FLAGS_LOCALREAD;
2155
2156 return hw_access;
2157 }
2158
2159 /**
2160 * irdma_free_stag - free stag resource
2161 * @iwdev: irdma device
2162 * @stag: stag to free
2163 */
2164 static void irdma_free_stag(struct irdma_device *iwdev, u32 stag)
2165 {
2166 u32 stag_idx;
2167
2168 stag_idx = (stag & iwdev->rf->mr_stagmask) >> IRDMA_CQPSQ_STAG_IDX_S;
2169 irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_mrs, stag_idx);
2170 }
2171
2172 /**
2173 * irdma_create_stag - create random stag
2174 * @iwdev: irdma device
2175 */
2176 static u32 irdma_create_stag(struct irdma_device *iwdev)
2177 {
2178 u32 stag = 0;
2179 u32 stag_index = 0;
2180 u32 next_stag_index;
2181 u32 driver_key;
2182 u32 random;
2183 u8 consumer_key;
2184 int ret;
2185
2186 get_random_bytes(&random, sizeof(random));
2187 consumer_key = (u8)random;
2188
2189 driver_key = random & ~iwdev->rf->mr_stagmask;
2190 next_stag_index = (random & iwdev->rf->mr_stagmask) >> 8;
2191 next_stag_index %= iwdev->rf->max_mr;
2192
2193 ret = irdma_alloc_rsrc(iwdev->rf, iwdev->rf->allocated_mrs,
2194 iwdev->rf->max_mr, &stag_index,
2195 &next_stag_index);
2196 if (ret)
2197 return stag;
2198 stag = stag_index << IRDMA_CQPSQ_STAG_IDX_S;
2199 stag |= driver_key;
2200 stag += (u32)consumer_key;
2201
2202 return stag;
2203 }
2204
2205 /**
2206 * irdma_next_pbl_addr - Get next pbl address
2207 * @pbl: pointer to a pble
2208 * @pinfo: info pointer
2209 * @idx: index
2210 */
2211 static inline u64 *irdma_next_pbl_addr(u64 *pbl, struct irdma_pble_info **pinfo,
2212 u32 *idx)
2213 {
2214 *idx += 1;
2215 if (!(*pinfo) || *idx != (*pinfo)->cnt)
2216 return ++pbl;
2217 *idx = 0;
2218 (*pinfo)++;
2219
2220 return (*pinfo)->addr;
2221 }
2222
2223 /**
2224 * irdma_copy_user_pgaddrs - copy user page address to pble's os locally
2225 * @iwmr: iwmr for IB's user page addresses
2226 * @pbl: ple pointer to save 1 level or 0 level pble
2227 * @level: indicated level 0, 1 or 2
2228 */
2229 static void irdma_copy_user_pgaddrs(struct irdma_mr *iwmr, u64 *pbl,
2230 enum irdma_pble_level level)
2231 {
2232 struct ib_umem *region = iwmr->region;
2233 struct irdma_pbl *iwpbl = &iwmr->iwpbl;
2234 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
2235 struct irdma_pble_info *pinfo;
2236 struct ib_block_iter biter;
2237 u32 idx = 0;
2238 u32 pbl_cnt = 0;
2239
2240 pinfo = (level == PBLE_LEVEL_1) ? NULL : palloc->level2.leaf;
2241
2242 if (iwmr->type == IRDMA_MEMREG_TYPE_QP)
2243 iwpbl->qp_mr.sq_page = sg_page(region->sgt_append.sgt.sgl);
2244
2245 rdma_umem_for_each_dma_block(region, &biter, iwmr->page_size) {
2246 *pbl = rdma_block_iter_dma_address(&biter);
2247 if (++pbl_cnt == palloc->total_cnt)
2248 break;
2249 pbl = irdma_next_pbl_addr(pbl, &pinfo, &idx);
2250 }
2251 }
2252
2253 /**
2254 * irdma_check_mem_contiguous - check if pbls stored in arr are contiguous
2255 * @arr: lvl1 pbl array
2256 * @npages: page count
2257 * @pg_size: page size
2258 *
2259 */
2260 static bool irdma_check_mem_contiguous(u64 *arr, u32 npages, u32 pg_size)
2261 {
2262 u32 pg_idx;
2263
2264 for (pg_idx = 0; pg_idx < npages; pg_idx++) {
2265 if ((*arr + (pg_size * pg_idx)) != arr[pg_idx])
2266 return false;
2267 }
2268
2269 return true;
2270 }
2271
2272 /**
2273 * irdma_check_mr_contiguous - check if MR is physically contiguous
2274 * @palloc: pbl allocation struct
2275 * @pg_size: page size
2276 */
2277 static bool irdma_check_mr_contiguous(struct irdma_pble_alloc *palloc,
2278 u32 pg_size)
2279 {
2280 struct irdma_pble_level2 *lvl2 = &palloc->level2;
2281 struct irdma_pble_info *leaf = lvl2->leaf;
2282 u64 *arr = NULL;
2283 u64 *start_addr = NULL;
2284 int i;
2285 bool ret;
2286
2287 if (palloc->level == PBLE_LEVEL_1) {
2288 arr = palloc->level1.addr;
2289 ret = irdma_check_mem_contiguous(arr, palloc->total_cnt,
2290 pg_size);
2291 return ret;
2292 }
2293
2294 start_addr = leaf->addr;
2295
2296 for (i = 0; i < lvl2->leaf_cnt; i++, leaf++) {
2297 arr = leaf->addr;
2298 if ((*start_addr + (i * pg_size * PBLE_PER_PAGE)) != *arr)
2299 return false;
2300 ret = irdma_check_mem_contiguous(arr, leaf->cnt, pg_size);
2301 if (!ret)
2302 return false;
2303 }
2304
2305 return true;
2306 }
2307
2308 /**
2309 * irdma_setup_pbles - copy user pg address to pble's
2310 * @rf: RDMA PCI function
2311 * @iwmr: mr pointer for this memory registration
2312 * @use_pbles: flag if to use pble's
2313 */
2314 static int irdma_setup_pbles(struct irdma_pci_f *rf, struct irdma_mr *iwmr,
2315 bool use_pbles)
2316 {
2317 struct irdma_pbl *iwpbl = &iwmr->iwpbl;
2318 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
2319 struct irdma_pble_info *pinfo;
2320 u64 *pbl;
2321 int status;
2322 enum irdma_pble_level level = PBLE_LEVEL_1;
2323
2324 if (use_pbles) {
2325 status = irdma_get_pble(rf->pble_rsrc, palloc, iwmr->page_cnt,
2326 false);
2327 if (status)
2328 return status;
2329
2330 iwpbl->pbl_allocated = true;
2331 level = palloc->level;
2332 pinfo = (level == PBLE_LEVEL_1) ? &palloc->level1 :
2333 palloc->level2.leaf;
2334 pbl = pinfo->addr;
2335 } else {
2336 pbl = iwmr->pgaddrmem;
2337 }
2338
2339 irdma_copy_user_pgaddrs(iwmr, pbl, level);
2340
2341 if (use_pbles)
2342 iwmr->pgaddrmem[0] = *pbl;
2343
2344 return 0;
2345 }
2346
2347 /**
2348 * irdma_handle_q_mem - handle memory for qp and cq
2349 * @iwdev: irdma device
2350 * @req: information for q memory management
2351 * @iwpbl: pble struct
2352 * @use_pbles: flag to use pble
2353 */
2354 static int irdma_handle_q_mem(struct irdma_device *iwdev,
2355 struct irdma_mem_reg_req *req,
2356 struct irdma_pbl *iwpbl, bool use_pbles)
2357 {
2358 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
2359 struct irdma_mr *iwmr = iwpbl->iwmr;
2360 struct irdma_qp_mr *qpmr = &iwpbl->qp_mr;
2361 struct irdma_cq_mr *cqmr = &iwpbl->cq_mr;
2362 struct irdma_hmc_pble *hmc_p;
2363 u64 *arr = iwmr->pgaddrmem;
2364 u32 pg_size, total;
2365 int err = 0;
2366 bool ret = true;
2367
2368 pg_size = iwmr->page_size;
2369 err = irdma_setup_pbles(iwdev->rf, iwmr, use_pbles);
2370 if (err)
2371 return err;
2372
2373 if (use_pbles && palloc->level != PBLE_LEVEL_1) {
2374 irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
2375 iwpbl->pbl_allocated = false;
2376 return -ENOMEM;
2377 }
2378
2379 if (use_pbles)
2380 arr = palloc->level1.addr;
2381
2382 switch (iwmr->type) {
2383 case IRDMA_MEMREG_TYPE_QP:
2384 total = req->sq_pages + req->rq_pages;
2385 hmc_p = &qpmr->sq_pbl;
2386 qpmr->shadow = (dma_addr_t)arr[total];
2387
2388 if (use_pbles) {
2389 ret = irdma_check_mem_contiguous(arr, req->sq_pages,
2390 pg_size);
2391 if (ret)
2392 ret = irdma_check_mem_contiguous(&arr[req->sq_pages],
2393 req->rq_pages,
2394 pg_size);
2395 }
2396
2397 if (!ret) {
2398 hmc_p->idx = palloc->level1.idx;
2399 hmc_p = &qpmr->rq_pbl;
2400 hmc_p->idx = palloc->level1.idx + req->sq_pages;
2401 } else {
2402 hmc_p->addr = arr[0];
2403 hmc_p = &qpmr->rq_pbl;
2404 hmc_p->addr = arr[req->sq_pages];
2405 }
2406 break;
2407 case IRDMA_MEMREG_TYPE_CQ:
2408 hmc_p = &cqmr->cq_pbl;
2409
2410 if (!cqmr->split)
2411 cqmr->shadow = (dma_addr_t)arr[req->cq_pages];
2412
2413 if (use_pbles)
2414 ret = irdma_check_mem_contiguous(arr, req->cq_pages,
2415 pg_size);
2416
2417 if (!ret)
2418 hmc_p->idx = palloc->level1.idx;
2419 else
2420 hmc_p->addr = arr[0];
2421 break;
2422 default:
2423 ibdev_dbg(&iwdev->ibdev, "VERBS: MR type error\n");
2424 err = -EINVAL;
2425 }
2426
2427 if (use_pbles && ret) {
2428 irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
2429 iwpbl->pbl_allocated = false;
2430 }
2431
2432 return err;
2433 }
2434
2435 /**
2436 * irdma_hw_alloc_mw - create the hw memory window
2437 * @iwdev: irdma device
2438 * @iwmr: pointer to memory window info
2439 */
2440 static int irdma_hw_alloc_mw(struct irdma_device *iwdev, struct irdma_mr *iwmr)
2441 {
2442 struct irdma_mw_alloc_info *info;
2443 struct irdma_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
2444 struct irdma_cqp_request *cqp_request;
2445 struct cqp_cmds_info *cqp_info;
2446 int status;
2447
2448 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
2449 if (!cqp_request)
2450 return -ENOMEM;
2451
2452 cqp_info = &cqp_request->info;
2453 info = &cqp_info->in.u.mw_alloc.info;
2454 memset(info, 0, sizeof(*info));
2455 if (iwmr->ibmw.type == IB_MW_TYPE_1)
2456 info->mw_wide = true;
2457
2458 info->page_size = PAGE_SIZE;
2459 info->mw_stag_index = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S;
2460 info->pd_id = iwpd->sc_pd.pd_id;
2461 info->remote_access = true;
2462 cqp_info->cqp_cmd = IRDMA_OP_MW_ALLOC;
2463 cqp_info->post_sq = 1;
2464 cqp_info->in.u.mw_alloc.dev = &iwdev->rf->sc_dev;
2465 cqp_info->in.u.mw_alloc.scratch = (uintptr_t)cqp_request;
2466 status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
2467 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
2468
2469 return status;
2470 }
2471
2472 /**
2473 * irdma_alloc_mw - Allocate memory window
2474 * @ibmw: Memory Window
2475 * @udata: user data pointer
2476 */
2477 static int irdma_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata)
2478 {
2479 struct irdma_device *iwdev = to_iwdev(ibmw->device);
2480 struct irdma_mr *iwmr = to_iwmw(ibmw);
2481 int err_code;
2482 u32 stag;
2483
2484 stag = irdma_create_stag(iwdev);
2485 if (!stag)
2486 return -ENOMEM;
2487
2488 iwmr->stag = stag;
2489 ibmw->rkey = stag;
2490
2491 err_code = irdma_hw_alloc_mw(iwdev, iwmr);
2492 if (err_code) {
2493 irdma_free_stag(iwdev, stag);
2494 return err_code;
2495 }
2496
2497 return 0;
2498 }
2499
2500 /**
2501 * irdma_dealloc_mw - Dealloc memory window
2502 * @ibmw: memory window structure.
2503 */
2504 static int irdma_dealloc_mw(struct ib_mw *ibmw)
2505 {
2506 struct ib_pd *ibpd = ibmw->pd;
2507 struct irdma_pd *iwpd = to_iwpd(ibpd);
2508 struct irdma_mr *iwmr = to_iwmr((struct ib_mr *)ibmw);
2509 struct irdma_device *iwdev = to_iwdev(ibmw->device);
2510 struct irdma_cqp_request *cqp_request;
2511 struct cqp_cmds_info *cqp_info;
2512 struct irdma_dealloc_stag_info *info;
2513
2514 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
2515 if (!cqp_request)
2516 return -ENOMEM;
2517
2518 cqp_info = &cqp_request->info;
2519 info = &cqp_info->in.u.dealloc_stag.info;
2520 memset(info, 0, sizeof(*info));
2521 info->pd_id = iwpd->sc_pd.pd_id;
2522 info->stag_idx = ibmw->rkey >> IRDMA_CQPSQ_STAG_IDX_S;
2523 info->mr = false;
2524 cqp_info->cqp_cmd = IRDMA_OP_DEALLOC_STAG;
2525 cqp_info->post_sq = 1;
2526 cqp_info->in.u.dealloc_stag.dev = &iwdev->rf->sc_dev;
2527 cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
2528 irdma_handle_cqp_op(iwdev->rf, cqp_request);
2529 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
2530 irdma_free_stag(iwdev, iwmr->stag);
2531
2532 return 0;
2533 }
2534
2535 /**
2536 * irdma_hw_alloc_stag - cqp command to allocate stag
2537 * @iwdev: irdma device
2538 * @iwmr: irdma mr pointer
2539 */
2540 static int irdma_hw_alloc_stag(struct irdma_device *iwdev,
2541 struct irdma_mr *iwmr)
2542 {
2543 struct irdma_allocate_stag_info *info;
2544 struct irdma_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
2545 int status;
2546 struct irdma_cqp_request *cqp_request;
2547 struct cqp_cmds_info *cqp_info;
2548
2549 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
2550 if (!cqp_request)
2551 return -ENOMEM;
2552
2553 cqp_info = &cqp_request->info;
2554 info = &cqp_info->in.u.alloc_stag.info;
2555 memset(info, 0, sizeof(*info));
2556 info->page_size = PAGE_SIZE;
2557 info->stag_idx = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S;
2558 info->pd_id = iwpd->sc_pd.pd_id;
2559 info->total_len = iwmr->len;
2560 info->remote_access = true;
2561 cqp_info->cqp_cmd = IRDMA_OP_ALLOC_STAG;
2562 cqp_info->post_sq = 1;
2563 cqp_info->in.u.alloc_stag.dev = &iwdev->rf->sc_dev;
2564 cqp_info->in.u.alloc_stag.scratch = (uintptr_t)cqp_request;
2565 status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
2566 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
2567
2568 return status;
2569 }
2570
2571 /**
2572 * irdma_alloc_mr - register stag for fast memory registration
2573 * @pd: ibpd pointer
2574 * @mr_type: memory for stag registrion
2575 * @max_num_sg: man number of pages
2576 */
2577 static struct ib_mr *irdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
2578 u32 max_num_sg)
2579 {
2580 struct irdma_device *iwdev = to_iwdev(pd->device);
2581 struct irdma_pble_alloc *palloc;
2582 struct irdma_pbl *iwpbl;
2583 struct irdma_mr *iwmr;
2584 u32 stag;
2585 int err_code;
2586
2587 iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
2588 if (!iwmr)
2589 return ERR_PTR(-ENOMEM);
2590
2591 stag = irdma_create_stag(iwdev);
2592 if (!stag) {
2593 err_code = -ENOMEM;
2594 goto err;
2595 }
2596
2597 iwmr->stag = stag;
2598 iwmr->ibmr.rkey = stag;
2599 iwmr->ibmr.lkey = stag;
2600 iwmr->ibmr.pd = pd;
2601 iwmr->ibmr.device = pd->device;
2602 iwpbl = &iwmr->iwpbl;
2603 iwpbl->iwmr = iwmr;
2604 iwmr->type = IRDMA_MEMREG_TYPE_MEM;
2605 palloc = &iwpbl->pble_alloc;
2606 iwmr->page_cnt = max_num_sg;
2607 err_code = irdma_get_pble(iwdev->rf->pble_rsrc, palloc, iwmr->page_cnt,
2608 false);
2609 if (err_code)
2610 goto err_get_pble;
2611
2612 err_code = irdma_hw_alloc_stag(iwdev, iwmr);
2613 if (err_code)
2614 goto err_alloc_stag;
2615
2616 iwpbl->pbl_allocated = true;
2617
2618 return &iwmr->ibmr;
2619 err_alloc_stag:
2620 irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
2621 err_get_pble:
2622 irdma_free_stag(iwdev, stag);
2623 err:
2624 kfree(iwmr);
2625
2626 return ERR_PTR(err_code);
2627 }
2628
2629 /**
2630 * irdma_set_page - populate pbl list for fmr
2631 * @ibmr: ib mem to access iwarp mr pointer
2632 * @addr: page dma address fro pbl list
2633 */
2634 static int irdma_set_page(struct ib_mr *ibmr, u64 addr)
2635 {
2636 struct irdma_mr *iwmr = to_iwmr(ibmr);
2637 struct irdma_pbl *iwpbl = &iwmr->iwpbl;
2638 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
2639 u64 *pbl;
2640
2641 if (unlikely(iwmr->npages == iwmr->page_cnt))
2642 return -ENOMEM;
2643
2644 if (palloc->level == PBLE_LEVEL_2) {
2645 struct irdma_pble_info *palloc_info =
2646 palloc->level2.leaf + (iwmr->npages >> PBLE_512_SHIFT);
2647
2648 palloc_info->addr[iwmr->npages & (PBLE_PER_PAGE - 1)] = addr;
2649 } else {
2650 pbl = palloc->level1.addr;
2651 pbl[iwmr->npages] = addr;
2652 }
2653 iwmr->npages++;
2654
2655 return 0;
2656 }
2657
2658 /**
2659 * irdma_map_mr_sg - map of sg list for fmr
2660 * @ibmr: ib mem to access iwarp mr pointer
2661 * @sg: scatter gather list
2662 * @sg_nents: number of sg pages
2663 * @sg_offset: scatter gather list for fmr
2664 */
2665 static int irdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
2666 int sg_nents, unsigned int *sg_offset)
2667 {
2668 struct irdma_mr *iwmr = to_iwmr(ibmr);
2669
2670 iwmr->npages = 0;
2671
2672 return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, irdma_set_page);
2673 }
2674
2675 /**
2676 * irdma_hwreg_mr - send cqp command for memory registration
2677 * @iwdev: irdma device
2678 * @iwmr: irdma mr pointer
2679 * @access: access for MR
2680 */
2681 static int irdma_hwreg_mr(struct irdma_device *iwdev, struct irdma_mr *iwmr,
2682 u16 access)
2683 {
2684 struct irdma_pbl *iwpbl = &iwmr->iwpbl;
2685 struct irdma_reg_ns_stag_info *stag_info;
2686 struct irdma_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
2687 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
2688 struct irdma_cqp_request *cqp_request;
2689 struct cqp_cmds_info *cqp_info;
2690 int ret;
2691
2692 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
2693 if (!cqp_request)
2694 return -ENOMEM;
2695
2696 cqp_info = &cqp_request->info;
2697 stag_info = &cqp_info->in.u.mr_reg_non_shared.info;
2698 memset(stag_info, 0, sizeof(*stag_info));
2699 stag_info->va = iwpbl->user_base;
2700 stag_info->stag_idx = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S;
2701 stag_info->stag_key = (u8)iwmr->stag;
2702 stag_info->total_len = iwmr->len;
2703 stag_info->access_rights = irdma_get_mr_access(access);
2704 stag_info->pd_id = iwpd->sc_pd.pd_id;
2705 if (stag_info->access_rights & IRDMA_ACCESS_FLAGS_ZERO_BASED)
2706 stag_info->addr_type = IRDMA_ADDR_TYPE_ZERO_BASED;
2707 else
2708 stag_info->addr_type = IRDMA_ADDR_TYPE_VA_BASED;
2709 stag_info->page_size = iwmr->page_size;
2710
2711 if (iwpbl->pbl_allocated) {
2712 if (palloc->level == PBLE_LEVEL_1) {
2713 stag_info->first_pm_pbl_index = palloc->level1.idx;
2714 stag_info->chunk_size = 1;
2715 } else {
2716 stag_info->first_pm_pbl_index = palloc->level2.root.idx;
2717 stag_info->chunk_size = 3;
2718 }
2719 } else {
2720 stag_info->reg_addr_pa = iwmr->pgaddrmem[0];
2721 }
2722
2723 cqp_info->cqp_cmd = IRDMA_OP_MR_REG_NON_SHARED;
2724 cqp_info->post_sq = 1;
2725 cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->rf->sc_dev;
2726 cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request;
2727 ret = irdma_handle_cqp_op(iwdev->rf, cqp_request);
2728 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
2729
2730 return ret;
2731 }
2732
2733 /**
2734 * irdma_reg_user_mr - Register a user memory region
2735 * @pd: ptr of pd
2736 * @start: virtual start address
2737 * @len: length of mr
2738 * @virt: virtual address
2739 * @access: access of mr
2740 * @udata: user data
2741 */
2742 static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,
2743 u64 virt, int access,
2744 struct ib_udata *udata)
2745 {
2746 struct irdma_device *iwdev = to_iwdev(pd->device);
2747 struct irdma_ucontext *ucontext;
2748 struct irdma_pble_alloc *palloc;
2749 struct irdma_pbl *iwpbl;
2750 struct irdma_mr *iwmr;
2751 struct ib_umem *region;
2752 struct irdma_mem_reg_req req;
2753 u32 total, stag = 0;
2754 u8 shadow_pgcnt = 1;
2755 bool use_pbles = false;
2756 unsigned long flags;
2757 int err = -EINVAL;
2758 int ret;
2759
2760 if (len > iwdev->rf->sc_dev.hw_attrs.max_mr_size)
2761 return ERR_PTR(-EINVAL);
2762
2763 region = ib_umem_get(pd->device, start, len, access);
2764
2765 if (IS_ERR(region)) {
2766 ibdev_dbg(&iwdev->ibdev,
2767 "VERBS: Failed to create ib_umem region\n");
2768 return (struct ib_mr *)region;
2769 }
2770
2771 if (ib_copy_from_udata(&req, udata, min(sizeof(req), udata->inlen))) {
2772 ib_umem_release(region);
2773 return ERR_PTR(-EFAULT);
2774 }
2775
2776 iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
2777 if (!iwmr) {
2778 ib_umem_release(region);
2779 return ERR_PTR(-ENOMEM);
2780 }
2781
2782 iwpbl = &iwmr->iwpbl;
2783 iwpbl->iwmr = iwmr;
2784 iwmr->region = region;
2785 iwmr->ibmr.pd = pd;
2786 iwmr->ibmr.device = pd->device;
2787 iwmr->ibmr.iova = virt;
2788 iwmr->page_size = PAGE_SIZE;
2789
2790 if (req.reg_type == IRDMA_MEMREG_TYPE_MEM) {
2791 iwmr->page_size = ib_umem_find_best_pgsz(region,
2792 iwdev->rf->sc_dev.hw_attrs.page_size_cap,
2793 virt);
2794 if (unlikely(!iwmr->page_size)) {
2795 kfree(iwmr);
2796 ib_umem_release(region);
2797 return ERR_PTR(-EOPNOTSUPP);
2798 }
2799 }
2800 iwmr->len = region->length;
2801 iwpbl->user_base = virt;
2802 palloc = &iwpbl->pble_alloc;
2803 iwmr->type = req.reg_type;
2804 iwmr->page_cnt = ib_umem_num_dma_blocks(region, iwmr->page_size);
2805
2806 switch (req.reg_type) {
2807 case IRDMA_MEMREG_TYPE_QP:
2808 total = req.sq_pages + req.rq_pages + shadow_pgcnt;
2809 if (total > iwmr->page_cnt) {
2810 err = -EINVAL;
2811 goto error;
2812 }
2813 total = req.sq_pages + req.rq_pages;
2814 use_pbles = (total > 2);
2815 err = irdma_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
2816 if (err)
2817 goto error;
2818
2819 ucontext = rdma_udata_to_drv_context(udata, struct irdma_ucontext,
2820 ibucontext);
2821 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
2822 list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list);
2823 iwpbl->on_list = true;
2824 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
2825 break;
2826 case IRDMA_MEMREG_TYPE_CQ:
2827 if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_CQ_RESIZE)
2828 shadow_pgcnt = 0;
2829 total = req.cq_pages + shadow_pgcnt;
2830 if (total > iwmr->page_cnt) {
2831 err = -EINVAL;
2832 goto error;
2833 }
2834
2835 use_pbles = (req.cq_pages > 1);
2836 err = irdma_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
2837 if (err)
2838 goto error;
2839
2840 ucontext = rdma_udata_to_drv_context(udata, struct irdma_ucontext,
2841 ibucontext);
2842 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
2843 list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list);
2844 iwpbl->on_list = true;
2845 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
2846 break;
2847 case IRDMA_MEMREG_TYPE_MEM:
2848 use_pbles = (iwmr->page_cnt != 1);
2849
2850 err = irdma_setup_pbles(iwdev->rf, iwmr, use_pbles);
2851 if (err)
2852 goto error;
2853
2854 if (use_pbles) {
2855 ret = irdma_check_mr_contiguous(palloc,
2856 iwmr->page_size);
2857 if (ret) {
2858 irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
2859 iwpbl->pbl_allocated = false;
2860 }
2861 }
2862
2863 stag = irdma_create_stag(iwdev);
2864 if (!stag) {
2865 err = -ENOMEM;
2866 goto error;
2867 }
2868
2869 iwmr->stag = stag;
2870 iwmr->ibmr.rkey = stag;
2871 iwmr->ibmr.lkey = stag;
2872 err = irdma_hwreg_mr(iwdev, iwmr, access);
2873 if (err) {
2874 irdma_free_stag(iwdev, stag);
2875 goto error;
2876 }
2877
2878 break;
2879 default:
2880 goto error;
2881 }
2882
2883 iwmr->type = req.reg_type;
2884
2885 return &iwmr->ibmr;
2886
2887 error:
2888 if (palloc->level != PBLE_LEVEL_0 && iwpbl->pbl_allocated)
2889 irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
2890 ib_umem_release(region);
2891 kfree(iwmr);
2892
2893 return ERR_PTR(err);
2894 }
2895
2896 /**
2897 * irdma_reg_phys_mr - register kernel physical memory
2898 * @pd: ibpd pointer
2899 * @addr: physical address of memory to register
2900 * @size: size of memory to register
2901 * @access: Access rights
2902 * @iova_start: start of virtual address for physical buffers
2903 */
2904 struct ib_mr *irdma_reg_phys_mr(struct ib_pd *pd, u64 addr, u64 size, int access,
2905 u64 *iova_start)
2906 {
2907 struct irdma_device *iwdev = to_iwdev(pd->device);
2908 struct irdma_pbl *iwpbl;
2909 struct irdma_mr *iwmr;
2910 u32 stag;
2911 int ret;
2912
2913 iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
2914 if (!iwmr)
2915 return ERR_PTR(-ENOMEM);
2916
2917 iwmr->ibmr.pd = pd;
2918 iwmr->ibmr.device = pd->device;
2919 iwpbl = &iwmr->iwpbl;
2920 iwpbl->iwmr = iwmr;
2921 iwmr->type = IRDMA_MEMREG_TYPE_MEM;
2922 iwpbl->user_base = *iova_start;
2923 stag = irdma_create_stag(iwdev);
2924 if (!stag) {
2925 ret = -ENOMEM;
2926 goto err;
2927 }
2928
2929 iwmr->stag = stag;
2930 iwmr->ibmr.iova = *iova_start;
2931 iwmr->ibmr.rkey = stag;
2932 iwmr->ibmr.lkey = stag;
2933 iwmr->page_cnt = 1;
2934 iwmr->pgaddrmem[0] = addr;
2935 iwmr->len = size;
2936 iwmr->page_size = SZ_4K;
2937 ret = irdma_hwreg_mr(iwdev, iwmr, access);
2938 if (ret) {
2939 irdma_free_stag(iwdev, stag);
2940 goto err;
2941 }
2942
2943 return &iwmr->ibmr;
2944
2945 err:
2946 kfree(iwmr);
2947
2948 return ERR_PTR(ret);
2949 }
2950
2951 /**
2952 * irdma_get_dma_mr - register physical mem
2953 * @pd: ptr of pd
2954 * @acc: access for memory
2955 */
2956 static struct ib_mr *irdma_get_dma_mr(struct ib_pd *pd, int acc)
2957 {
2958 u64 kva = 0;
2959
2960 return irdma_reg_phys_mr(pd, 0, 0, acc, &kva);
2961 }
2962
2963 /**
2964 * irdma_del_memlist - Deleting pbl list entries for CQ/QP
2965 * @iwmr: iwmr for IB's user page addresses
2966 * @ucontext: ptr to user context
2967 */
2968 static void irdma_del_memlist(struct irdma_mr *iwmr,
2969 struct irdma_ucontext *ucontext)
2970 {
2971 struct irdma_pbl *iwpbl = &iwmr->iwpbl;
2972 unsigned long flags;
2973
2974 switch (iwmr->type) {
2975 case IRDMA_MEMREG_TYPE_CQ:
2976 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
2977 if (iwpbl->on_list) {
2978 iwpbl->on_list = false;
2979 list_del(&iwpbl->list);
2980 }
2981 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
2982 break;
2983 case IRDMA_MEMREG_TYPE_QP:
2984 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
2985 if (iwpbl->on_list) {
2986 iwpbl->on_list = false;
2987 list_del(&iwpbl->list);
2988 }
2989 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
2990 break;
2991 default:
2992 break;
2993 }
2994 }
2995
2996 /**
2997 * irdma_dereg_mr - deregister mr
2998 * @ib_mr: mr ptr for dereg
2999 * @udata: user data
3000 */
3001 static int irdma_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata)
3002 {
3003 struct ib_pd *ibpd = ib_mr->pd;
3004 struct irdma_pd *iwpd = to_iwpd(ibpd);
3005 struct irdma_mr *iwmr = to_iwmr(ib_mr);
3006 struct irdma_device *iwdev = to_iwdev(ib_mr->device);
3007 struct irdma_dealloc_stag_info *info;
3008 struct irdma_pbl *iwpbl = &iwmr->iwpbl;
3009 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc;
3010 struct irdma_cqp_request *cqp_request;
3011 struct cqp_cmds_info *cqp_info;
3012
3013 if (iwmr->type != IRDMA_MEMREG_TYPE_MEM) {
3014 if (iwmr->region) {
3015 struct irdma_ucontext *ucontext;
3016
3017 ucontext = rdma_udata_to_drv_context(udata,
3018 struct irdma_ucontext,
3019 ibucontext);
3020 irdma_del_memlist(iwmr, ucontext);
3021 }
3022 goto done;
3023 }
3024
3025 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
3026 if (!cqp_request)
3027 return -ENOMEM;
3028
3029 cqp_info = &cqp_request->info;
3030 info = &cqp_info->in.u.dealloc_stag.info;
3031 memset(info, 0, sizeof(*info));
3032 info->pd_id = iwpd->sc_pd.pd_id;
3033 info->stag_idx = ib_mr->rkey >> IRDMA_CQPSQ_STAG_IDX_S;
3034 info->mr = true;
3035 if (iwpbl->pbl_allocated)
3036 info->dealloc_pbl = true;
3037
3038 cqp_info->cqp_cmd = IRDMA_OP_DEALLOC_STAG;
3039 cqp_info->post_sq = 1;
3040 cqp_info->in.u.dealloc_stag.dev = &iwdev->rf->sc_dev;
3041 cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
3042 irdma_handle_cqp_op(iwdev->rf, cqp_request);
3043 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
3044 irdma_free_stag(iwdev, iwmr->stag);
3045 done:
3046 if (iwpbl->pbl_allocated)
3047 irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
3048 ib_umem_release(iwmr->region);
3049 kfree(iwmr);
3050
3051 return 0;
3052 }
3053
3054 /**
3055 * irdma_post_send - kernel application wr
3056 * @ibqp: qp ptr for wr
3057 * @ib_wr: work request ptr
3058 * @bad_wr: return of bad wr if err
3059 */
3060 static int irdma_post_send(struct ib_qp *ibqp,
3061 const struct ib_send_wr *ib_wr,
3062 const struct ib_send_wr **bad_wr)
3063 {
3064 struct irdma_qp *iwqp;
3065 struct irdma_qp_uk *ukqp;
3066 struct irdma_sc_dev *dev;
3067 struct irdma_post_sq_info info;
3068 int err = 0;
3069 unsigned long flags;
3070 bool inv_stag;
3071 struct irdma_ah *ah;
3072
3073 iwqp = to_iwqp(ibqp);
3074 ukqp = &iwqp->sc_qp.qp_uk;
3075 dev = &iwqp->iwdev->rf->sc_dev;
3076
3077 spin_lock_irqsave(&iwqp->lock, flags);
3078 while (ib_wr) {
3079 memset(&info, 0, sizeof(info));
3080 inv_stag = false;
3081 info.wr_id = (ib_wr->wr_id);
3082 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all)
3083 info.signaled = true;
3084 if (ib_wr->send_flags & IB_SEND_FENCE)
3085 info.read_fence = true;
3086 switch (ib_wr->opcode) {
3087 case IB_WR_SEND_WITH_IMM:
3088 if (ukqp->qp_caps & IRDMA_SEND_WITH_IMM) {
3089 info.imm_data_valid = true;
3090 info.imm_data = ntohl(ib_wr->ex.imm_data);
3091 } else {
3092 err = -EINVAL;
3093 break;
3094 }
3095 fallthrough;
3096 case IB_WR_SEND:
3097 case IB_WR_SEND_WITH_INV:
3098 if (ib_wr->opcode == IB_WR_SEND ||
3099 ib_wr->opcode == IB_WR_SEND_WITH_IMM) {
3100 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3101 info.op_type = IRDMA_OP_TYPE_SEND_SOL;
3102 else
3103 info.op_type = IRDMA_OP_TYPE_SEND;
3104 } else {
3105 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3106 info.op_type = IRDMA_OP_TYPE_SEND_SOL_INV;
3107 else
3108 info.op_type = IRDMA_OP_TYPE_SEND_INV;
3109 info.stag_to_inv = ib_wr->ex.invalidate_rkey;
3110 }
3111
3112 if (ib_wr->send_flags & IB_SEND_INLINE) {
3113 info.op.inline_send.data = (void *)(unsigned long)
3114 ib_wr->sg_list[0].addr;
3115 info.op.inline_send.len = ib_wr->sg_list[0].length;
3116 if (iwqp->ibqp.qp_type == IB_QPT_UD ||
3117 iwqp->ibqp.qp_type == IB_QPT_GSI) {
3118 ah = to_iwah(ud_wr(ib_wr)->ah);
3119 info.op.inline_send.ah_id = ah->sc_ah.ah_info.ah_idx;
3120 info.op.inline_send.qkey = ud_wr(ib_wr)->remote_qkey;
3121 info.op.inline_send.dest_qp = ud_wr(ib_wr)->remote_qpn;
3122 }
3123 err = irdma_uk_inline_send(ukqp, &info, false);
3124 } else {
3125 info.op.send.num_sges = ib_wr->num_sge;
3126 info.op.send.sg_list = ib_wr->sg_list;
3127 if (iwqp->ibqp.qp_type == IB_QPT_UD ||
3128 iwqp->ibqp.qp_type == IB_QPT_GSI) {
3129 ah = to_iwah(ud_wr(ib_wr)->ah);
3130 info.op.send.ah_id = ah->sc_ah.ah_info.ah_idx;
3131 info.op.send.qkey = ud_wr(ib_wr)->remote_qkey;
3132 info.op.send.dest_qp = ud_wr(ib_wr)->remote_qpn;
3133 }
3134 err = irdma_uk_send(ukqp, &info, false);
3135 }
3136 break;
3137 case IB_WR_RDMA_WRITE_WITH_IMM:
3138 if (ukqp->qp_caps & IRDMA_WRITE_WITH_IMM) {
3139 info.imm_data_valid = true;
3140 info.imm_data = ntohl(ib_wr->ex.imm_data);
3141 } else {
3142 err = -EINVAL;
3143 break;
3144 }
3145 fallthrough;
3146 case IB_WR_RDMA_WRITE:
3147 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3148 info.op_type = IRDMA_OP_TYPE_RDMA_WRITE_SOL;
3149 else
3150 info.op_type = IRDMA_OP_TYPE_RDMA_WRITE;
3151
3152 if (ib_wr->send_flags & IB_SEND_INLINE) {
3153 info.op.inline_rdma_write.data = (void *)(uintptr_t)ib_wr->sg_list[0].addr;
3154 info.op.inline_rdma_write.len =
3155 ib_wr->sg_list[0].length;
3156 info.op.inline_rdma_write.rem_addr.addr =
3157 rdma_wr(ib_wr)->remote_addr;
3158 info.op.inline_rdma_write.rem_addr.lkey =
3159 rdma_wr(ib_wr)->rkey;
3160 err = irdma_uk_inline_rdma_write(ukqp, &info, false);
3161 } else {
3162 info.op.rdma_write.lo_sg_list = (void *)ib_wr->sg_list;
3163 info.op.rdma_write.num_lo_sges = ib_wr->num_sge;
3164 info.op.rdma_write.rem_addr.addr = rdma_wr(ib_wr)->remote_addr;
3165 info.op.rdma_write.rem_addr.lkey = rdma_wr(ib_wr)->rkey;
3166 err = irdma_uk_rdma_write(ukqp, &info, false);
3167 }
3168 break;
3169 case IB_WR_RDMA_READ_WITH_INV:
3170 inv_stag = true;
3171 fallthrough;
3172 case IB_WR_RDMA_READ:
3173 if (ib_wr->num_sge >
3174 dev->hw_attrs.uk_attrs.max_hw_read_sges) {
3175 err = -EINVAL;
3176 break;
3177 }
3178 info.op_type = IRDMA_OP_TYPE_RDMA_READ;
3179 info.op.rdma_read.rem_addr.addr = rdma_wr(ib_wr)->remote_addr;
3180 info.op.rdma_read.rem_addr.lkey = rdma_wr(ib_wr)->rkey;
3181 info.op.rdma_read.lo_sg_list = (void *)ib_wr->sg_list;
3182 info.op.rdma_read.num_lo_sges = ib_wr->num_sge;
3183 err = irdma_uk_rdma_read(ukqp, &info, inv_stag, false);
3184 break;
3185 case IB_WR_LOCAL_INV:
3186 info.op_type = IRDMA_OP_TYPE_INV_STAG;
3187 info.op.inv_local_stag.target_stag = ib_wr->ex.invalidate_rkey;
3188 err = irdma_uk_stag_local_invalidate(ukqp, &info, true);
3189 break;
3190 case IB_WR_REG_MR: {
3191 struct irdma_mr *iwmr = to_iwmr(reg_wr(ib_wr)->mr);
3192 struct irdma_pble_alloc *palloc = &iwmr->iwpbl.pble_alloc;
3193 struct irdma_fast_reg_stag_info stag_info = {};
3194
3195 stag_info.signaled = info.signaled;
3196 stag_info.read_fence = info.read_fence;
3197 stag_info.access_rights = irdma_get_mr_access(reg_wr(ib_wr)->access);
3198 stag_info.stag_key = reg_wr(ib_wr)->key & 0xff;
3199 stag_info.stag_idx = reg_wr(ib_wr)->key >> 8;
3200 stag_info.page_size = reg_wr(ib_wr)->mr->page_size;
3201 stag_info.wr_id = ib_wr->wr_id;
3202 stag_info.addr_type = IRDMA_ADDR_TYPE_VA_BASED;
3203 stag_info.va = (void *)(uintptr_t)iwmr->ibmr.iova;
3204 stag_info.total_len = iwmr->ibmr.length;
3205 stag_info.reg_addr_pa = *palloc->level1.addr;
3206 stag_info.first_pm_pbl_index = palloc->level1.idx;
3207 stag_info.local_fence = ib_wr->send_flags & IB_SEND_FENCE;
3208 if (iwmr->npages > IRDMA_MIN_PAGES_PER_FMR)
3209 stag_info.chunk_size = 1;
3210 err = irdma_sc_mr_fast_register(&iwqp->sc_qp, &stag_info,
3211 true);
3212 break;
3213 }
3214 default:
3215 err = -EINVAL;
3216 ibdev_dbg(&iwqp->iwdev->ibdev,
3217 "VERBS: upost_send bad opcode = 0x%x\n",
3218 ib_wr->opcode);
3219 break;
3220 }
3221
3222 if (err)
3223 break;
3224 ib_wr = ib_wr->next;
3225 }
3226
3227 if (!iwqp->flush_issued) {
3228 if (iwqp->hw_iwarp_state <= IRDMA_QP_STATE_RTS)
3229 irdma_uk_qp_post_wr(ukqp);
3230 spin_unlock_irqrestore(&iwqp->lock, flags);
3231 } else {
3232 spin_unlock_irqrestore(&iwqp->lock, flags);
3233 mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush,
3234 msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
3235 }
3236 if (err)
3237 *bad_wr = ib_wr;
3238
3239 return err;
3240 }
3241
3242 /**
3243 * irdma_post_recv - post receive wr for kernel application
3244 * @ibqp: ib qp pointer
3245 * @ib_wr: work request for receive
3246 * @bad_wr: bad wr caused an error
3247 */
3248 static int irdma_post_recv(struct ib_qp *ibqp,
3249 const struct ib_recv_wr *ib_wr,
3250 const struct ib_recv_wr **bad_wr)
3251 {
3252 struct irdma_qp *iwqp;
3253 struct irdma_qp_uk *ukqp;
3254 struct irdma_post_rq_info post_recv = {};
3255 unsigned long flags;
3256 int err = 0;
3257
3258 iwqp = to_iwqp(ibqp);
3259 ukqp = &iwqp->sc_qp.qp_uk;
3260
3261 spin_lock_irqsave(&iwqp->lock, flags);
3262 while (ib_wr) {
3263 post_recv.num_sges = ib_wr->num_sge;
3264 post_recv.wr_id = ib_wr->wr_id;
3265 post_recv.sg_list = ib_wr->sg_list;
3266 err = irdma_uk_post_receive(ukqp, &post_recv);
3267 if (err) {
3268 ibdev_dbg(&iwqp->iwdev->ibdev,
3269 "VERBS: post_recv err %d\n", err);
3270 goto out;
3271 }
3272
3273 ib_wr = ib_wr->next;
3274 }
3275
3276 out:
3277 spin_unlock_irqrestore(&iwqp->lock, flags);
3278 if (iwqp->flush_issued)
3279 mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush,
3280 msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
3281
3282 if (err)
3283 *bad_wr = ib_wr;
3284
3285 return err;
3286 }
3287
3288 /**
3289 * irdma_flush_err_to_ib_wc_status - return change flush error code to IB status
3290 * @opcode: iwarp flush code
3291 */
3292 static enum ib_wc_status irdma_flush_err_to_ib_wc_status(enum irdma_flush_opcode opcode)
3293 {
3294 switch (opcode) {
3295 case FLUSH_PROT_ERR:
3296 return IB_WC_LOC_PROT_ERR;
3297 case FLUSH_REM_ACCESS_ERR:
3298 return IB_WC_REM_ACCESS_ERR;
3299 case FLUSH_LOC_QP_OP_ERR:
3300 return IB_WC_LOC_QP_OP_ERR;
3301 case FLUSH_REM_OP_ERR:
3302 return IB_WC_REM_OP_ERR;
3303 case FLUSH_LOC_LEN_ERR:
3304 return IB_WC_LOC_LEN_ERR;
3305 case FLUSH_GENERAL_ERR:
3306 return IB_WC_WR_FLUSH_ERR;
3307 case FLUSH_RETRY_EXC_ERR:
3308 return IB_WC_RETRY_EXC_ERR;
3309 case FLUSH_MW_BIND_ERR:
3310 return IB_WC_MW_BIND_ERR;
3311 case FLUSH_FATAL_ERR:
3312 default:
3313 return IB_WC_FATAL_ERR;
3314 }
3315 }
3316
3317 /**
3318 * irdma_process_cqe - process cqe info
3319 * @entry: processed cqe
3320 * @cq_poll_info: cqe info
3321 */
3322 static void irdma_process_cqe(struct ib_wc *entry,
3323 struct irdma_cq_poll_info *cq_poll_info)
3324 {
3325 struct irdma_qp *iwqp;
3326 struct irdma_sc_qp *qp;
3327
3328 entry->wc_flags = 0;
3329 entry->pkey_index = 0;
3330 entry->wr_id = cq_poll_info->wr_id;
3331
3332 qp = cq_poll_info->qp_handle;
3333 iwqp = qp->qp_uk.back_qp;
3334 entry->qp = qp->qp_uk.back_qp;
3335
3336 if (cq_poll_info->error) {
3337 entry->status = (cq_poll_info->comp_status == IRDMA_COMPL_STATUS_FLUSHED) ?
3338 irdma_flush_err_to_ib_wc_status(cq_poll_info->minor_err) : IB_WC_GENERAL_ERR;
3339
3340 entry->vendor_err = cq_poll_info->major_err << 16 |
3341 cq_poll_info->minor_err;
3342 } else {
3343 entry->status = IB_WC_SUCCESS;
3344 if (cq_poll_info->imm_valid) {
3345 entry->ex.imm_data = htonl(cq_poll_info->imm_data);
3346 entry->wc_flags |= IB_WC_WITH_IMM;
3347 }
3348 if (cq_poll_info->ud_smac_valid) {
3349 ether_addr_copy(entry->smac, cq_poll_info->ud_smac);
3350 entry->wc_flags |= IB_WC_WITH_SMAC;
3351 }
3352
3353 if (cq_poll_info->ud_vlan_valid) {
3354 u16 vlan = cq_poll_info->ud_vlan & VLAN_VID_MASK;
3355
3356 entry->sl = cq_poll_info->ud_vlan >> VLAN_PRIO_SHIFT;
3357 if (vlan) {
3358 entry->vlan_id = vlan;
3359 entry->wc_flags |= IB_WC_WITH_VLAN;
3360 }
3361 } else {
3362 entry->sl = 0;
3363 }
3364 }
3365
3366 switch (cq_poll_info->op_type) {
3367 case IRDMA_OP_TYPE_RDMA_WRITE:
3368 case IRDMA_OP_TYPE_RDMA_WRITE_SOL:
3369 entry->opcode = IB_WC_RDMA_WRITE;
3370 break;
3371 case IRDMA_OP_TYPE_RDMA_READ_INV_STAG:
3372 case IRDMA_OP_TYPE_RDMA_READ:
3373 entry->opcode = IB_WC_RDMA_READ;
3374 break;
3375 case IRDMA_OP_TYPE_SEND_INV:
3376 case IRDMA_OP_TYPE_SEND_SOL:
3377 case IRDMA_OP_TYPE_SEND_SOL_INV:
3378 case IRDMA_OP_TYPE_SEND:
3379 entry->opcode = IB_WC_SEND;
3380 break;
3381 case IRDMA_OP_TYPE_FAST_REG_NSMR:
3382 entry->opcode = IB_WC_REG_MR;
3383 break;
3384 case IRDMA_OP_TYPE_INV_STAG:
3385 entry->opcode = IB_WC_LOCAL_INV;
3386 break;
3387 case IRDMA_OP_TYPE_REC_IMM:
3388 case IRDMA_OP_TYPE_REC:
3389 entry->opcode = cq_poll_info->op_type == IRDMA_OP_TYPE_REC_IMM ?
3390 IB_WC_RECV_RDMA_WITH_IMM : IB_WC_RECV;
3391 if (qp->qp_uk.qp_type != IRDMA_QP_TYPE_ROCE_UD &&
3392 cq_poll_info->stag_invalid_set) {
3393 entry->ex.invalidate_rkey = cq_poll_info->inv_stag;
3394 entry->wc_flags |= IB_WC_WITH_INVALIDATE;
3395 }
3396 break;
3397 default:
3398 ibdev_err(&iwqp->iwdev->ibdev,
3399 "Invalid opcode = %d in CQE\n", cq_poll_info->op_type);
3400 entry->status = IB_WC_GENERAL_ERR;
3401 return;
3402 }
3403
3404 if (qp->qp_uk.qp_type == IRDMA_QP_TYPE_ROCE_UD) {
3405 entry->src_qp = cq_poll_info->ud_src_qpn;
3406 entry->slid = 0;
3407 entry->wc_flags |=
3408 (IB_WC_GRH | IB_WC_WITH_NETWORK_HDR_TYPE);
3409 entry->network_hdr_type = cq_poll_info->ipv4 ?
3410 RDMA_NETWORK_IPV4 :
3411 RDMA_NETWORK_IPV6;
3412 } else {
3413 entry->src_qp = cq_poll_info->qp_id;
3414 }
3415
3416 entry->byte_len = cq_poll_info->bytes_xfered;
3417 }
3418
3419 /**
3420 * irdma_poll_one - poll one entry of the CQ
3421 * @ukcq: ukcq to poll
3422 * @cur_cqe: current CQE info to be filled in
3423 * @entry: ibv_wc object to be filled for non-extended CQ or NULL for extended CQ
3424 *
3425 * Returns the internal irdma device error code or 0 on success
3426 */
3427 static inline int irdma_poll_one(struct irdma_cq_uk *ukcq,
3428 struct irdma_cq_poll_info *cur_cqe,
3429 struct ib_wc *entry)
3430 {
3431 int ret = irdma_uk_cq_poll_cmpl(ukcq, cur_cqe);
3432
3433 if (ret)
3434 return ret;
3435
3436 irdma_process_cqe(entry, cur_cqe);
3437
3438 return 0;
3439 }
3440
3441 /**
3442 * __irdma_poll_cq - poll cq for completion (kernel apps)
3443 * @iwcq: cq to poll
3444 * @num_entries: number of entries to poll
3445 * @entry: wr of a completed entry
3446 */
3447 static int __irdma_poll_cq(struct irdma_cq *iwcq, int num_entries, struct ib_wc *entry)
3448 {
3449 struct list_head *tmp_node, *list_node;
3450 struct irdma_cq_buf *last_buf = NULL;
3451 struct irdma_cq_poll_info *cur_cqe = &iwcq->cur_cqe;
3452 struct irdma_cq_buf *cq_buf;
3453 int ret;
3454 struct irdma_device *iwdev;
3455 struct irdma_cq_uk *ukcq;
3456 bool cq_new_cqe = false;
3457 int resized_bufs = 0;
3458 int npolled = 0;
3459
3460 iwdev = to_iwdev(iwcq->ibcq.device);
3461 ukcq = &iwcq->sc_cq.cq_uk;
3462
3463 /* go through the list of previously resized CQ buffers */
3464 list_for_each_safe(list_node, tmp_node, &iwcq->resize_list) {
3465 cq_buf = container_of(list_node, struct irdma_cq_buf, list);
3466 while (npolled < num_entries) {
3467 ret = irdma_poll_one(&cq_buf->cq_uk, cur_cqe, entry + npolled);
3468 if (!ret) {
3469 ++npolled;
3470 cq_new_cqe = true;
3471 continue;
3472 }
3473 if (ret == -ENOENT)
3474 break;
3475 /* QP using the CQ is destroyed. Skip reporting this CQE */
3476 if (ret == -EFAULT) {
3477 cq_new_cqe = true;
3478 continue;
3479 }
3480 goto error;
3481 }
3482
3483 /* save the resized CQ buffer which received the last cqe */
3484 if (cq_new_cqe)
3485 last_buf = cq_buf;
3486 cq_new_cqe = false;
3487 }
3488
3489 /* check the current CQ for new cqes */
3490 while (npolled < num_entries) {
3491 ret = irdma_poll_one(ukcq, cur_cqe, entry + npolled);
3492 if (ret == -ENOENT) {
3493 ret = irdma_generated_cmpls(iwcq, cur_cqe);
3494 if (!ret)
3495 irdma_process_cqe(entry + npolled, cur_cqe);
3496 }
3497 if (!ret) {
3498 ++npolled;
3499 cq_new_cqe = true;
3500 continue;
3501 }
3502
3503 if (ret == -ENOENT)
3504 break;
3505 /* QP using the CQ is destroyed. Skip reporting this CQE */
3506 if (ret == -EFAULT) {
3507 cq_new_cqe = true;
3508 continue;
3509 }
3510 goto error;
3511 }
3512
3513 if (cq_new_cqe)
3514 /* all previous CQ resizes are complete */
3515 resized_bufs = irdma_process_resize_list(iwcq, iwdev, NULL);
3516 else if (last_buf)
3517 /* only CQ resizes up to the last_buf are complete */
3518 resized_bufs = irdma_process_resize_list(iwcq, iwdev, last_buf);
3519 if (resized_bufs)
3520 /* report to the HW the number of complete CQ resizes */
3521 irdma_uk_cq_set_resized_cnt(ukcq, resized_bufs);
3522
3523 return npolled;
3524 error:
3525 ibdev_dbg(&iwdev->ibdev, "%s: Error polling CQ, irdma_err: %d\n",
3526 __func__, ret);
3527
3528 return ret;
3529 }
3530
3531 /**
3532 * irdma_poll_cq - poll cq for completion (kernel apps)
3533 * @ibcq: cq to poll
3534 * @num_entries: number of entries to poll
3535 * @entry: wr of a completed entry
3536 */
3537 static int irdma_poll_cq(struct ib_cq *ibcq, int num_entries,
3538 struct ib_wc *entry)
3539 {
3540 struct irdma_cq *iwcq;
3541 unsigned long flags;
3542 int ret;
3543
3544 iwcq = to_iwcq(ibcq);
3545
3546 spin_lock_irqsave(&iwcq->lock, flags);
3547 ret = __irdma_poll_cq(iwcq, num_entries, entry);
3548 spin_unlock_irqrestore(&iwcq->lock, flags);
3549
3550 return ret;
3551 }
3552
3553 /**
3554 * irdma_req_notify_cq - arm cq kernel application
3555 * @ibcq: cq to arm
3556 * @notify_flags: notofication flags
3557 */
3558 static int irdma_req_notify_cq(struct ib_cq *ibcq,
3559 enum ib_cq_notify_flags notify_flags)
3560 {
3561 struct irdma_cq *iwcq;
3562 struct irdma_cq_uk *ukcq;
3563 unsigned long flags;
3564 enum irdma_cmpl_notify cq_notify;
3565 bool promo_event = false;
3566 int ret = 0;
3567
3568 cq_notify = notify_flags == IB_CQ_SOLICITED ?
3569 IRDMA_CQ_COMPL_SOLICITED : IRDMA_CQ_COMPL_EVENT;
3570 iwcq = to_iwcq(ibcq);
3571 ukcq = &iwcq->sc_cq.cq_uk;
3572
3573 spin_lock_irqsave(&iwcq->lock, flags);
3574 /* Only promote to arm the CQ for any event if the last arm event was solicited. */
3575 if (iwcq->last_notify == IRDMA_CQ_COMPL_SOLICITED && notify_flags != IB_CQ_SOLICITED)
3576 promo_event = true;
3577
3578 if (!atomic_cmpxchg(&iwcq->armed, 0, 1) || promo_event) {
3579 iwcq->last_notify = cq_notify;
3580 irdma_uk_cq_request_notification(ukcq, cq_notify);
3581 }
3582
3583 if ((notify_flags & IB_CQ_REPORT_MISSED_EVENTS) &&
3584 (!irdma_cq_empty(iwcq) || !list_empty(&iwcq->cmpl_generated)))
3585 ret = 1;
3586 spin_unlock_irqrestore(&iwcq->lock, flags);
3587
3588 return ret;
3589 }
3590
3591 static int irdma_roce_port_immutable(struct ib_device *ibdev, u32 port_num,
3592 struct ib_port_immutable *immutable)
3593 {
3594 struct ib_port_attr attr;
3595 int err;
3596
3597 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
3598 err = ib_query_port(ibdev, port_num, &attr);
3599 if (err)
3600 return err;
3601
3602 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
3603 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3604 immutable->gid_tbl_len = attr.gid_tbl_len;
3605
3606 return 0;
3607 }
3608
3609 static int irdma_iw_port_immutable(struct ib_device *ibdev, u32 port_num,
3610 struct ib_port_immutable *immutable)
3611 {
3612 struct ib_port_attr attr;
3613 int err;
3614
3615 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3616 err = ib_query_port(ibdev, port_num, &attr);
3617 if (err)
3618 return err;
3619 immutable->gid_tbl_len = attr.gid_tbl_len;
3620
3621 return 0;
3622 }
3623
3624 static const struct rdma_stat_desc irdma_hw_stat_descs[] = {
3625 /* 32bit names */
3626 [IRDMA_HW_STAT_INDEX_RXVLANERR].name = "rxVlanErrors",
3627 [IRDMA_HW_STAT_INDEX_IP4RXDISCARD].name = "ip4InDiscards",
3628 [IRDMA_HW_STAT_INDEX_IP4RXTRUNC].name = "ip4InTruncatedPkts",
3629 [IRDMA_HW_STAT_INDEX_IP4TXNOROUTE].name = "ip4OutNoRoutes",
3630 [IRDMA_HW_STAT_INDEX_IP6RXDISCARD].name = "ip6InDiscards",
3631 [IRDMA_HW_STAT_INDEX_IP6RXTRUNC].name = "ip6InTruncatedPkts",
3632 [IRDMA_HW_STAT_INDEX_IP6TXNOROUTE].name = "ip6OutNoRoutes",
3633 [IRDMA_HW_STAT_INDEX_TCPRTXSEG].name = "tcpRetransSegs",
3634 [IRDMA_HW_STAT_INDEX_TCPRXOPTERR].name = "tcpInOptErrors",
3635 [IRDMA_HW_STAT_INDEX_TCPRXPROTOERR].name = "tcpInProtoErrors",
3636 [IRDMA_HW_STAT_INDEX_RXRPCNPHANDLED].name = "cnpHandled",
3637 [IRDMA_HW_STAT_INDEX_RXRPCNPIGNORED].name = "cnpIgnored",
3638 [IRDMA_HW_STAT_INDEX_TXNPCNPSENT].name = "cnpSent",
3639
3640 /* 64bit names */
3641 [IRDMA_HW_STAT_INDEX_IP4RXOCTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3642 "ip4InOctets",
3643 [IRDMA_HW_STAT_INDEX_IP4RXPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3644 "ip4InPkts",
3645 [IRDMA_HW_STAT_INDEX_IP4RXFRAGS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3646 "ip4InReasmRqd",
3647 [IRDMA_HW_STAT_INDEX_IP4RXMCOCTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3648 "ip4InMcastOctets",
3649 [IRDMA_HW_STAT_INDEX_IP4RXMCPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3650 "ip4InMcastPkts",
3651 [IRDMA_HW_STAT_INDEX_IP4TXOCTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3652 "ip4OutOctets",
3653 [IRDMA_HW_STAT_INDEX_IP4TXPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3654 "ip4OutPkts",
3655 [IRDMA_HW_STAT_INDEX_IP4TXFRAGS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3656 "ip4OutSegRqd",
3657 [IRDMA_HW_STAT_INDEX_IP4TXMCOCTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3658 "ip4OutMcastOctets",
3659 [IRDMA_HW_STAT_INDEX_IP4TXMCPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3660 "ip4OutMcastPkts",
3661 [IRDMA_HW_STAT_INDEX_IP6RXOCTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3662 "ip6InOctets",
3663 [IRDMA_HW_STAT_INDEX_IP6RXPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3664 "ip6InPkts",
3665 [IRDMA_HW_STAT_INDEX_IP6RXFRAGS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3666 "ip6InReasmRqd",
3667 [IRDMA_HW_STAT_INDEX_IP6RXMCOCTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3668 "ip6InMcastOctets",
3669 [IRDMA_HW_STAT_INDEX_IP6RXMCPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3670 "ip6InMcastPkts",
3671 [IRDMA_HW_STAT_INDEX_IP6TXOCTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3672 "ip6OutOctets",
3673 [IRDMA_HW_STAT_INDEX_IP6TXPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3674 "ip6OutPkts",
3675 [IRDMA_HW_STAT_INDEX_IP6TXFRAGS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3676 "ip6OutSegRqd",
3677 [IRDMA_HW_STAT_INDEX_IP6TXMCOCTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3678 "ip6OutMcastOctets",
3679 [IRDMA_HW_STAT_INDEX_IP6TXMCPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3680 "ip6OutMcastPkts",
3681 [IRDMA_HW_STAT_INDEX_TCPRXSEGS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3682 "tcpInSegs",
3683 [IRDMA_HW_STAT_INDEX_TCPTXSEG + IRDMA_HW_STAT_INDEX_MAX_32].name =
3684 "tcpOutSegs",
3685 [IRDMA_HW_STAT_INDEX_RDMARXRDS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3686 "iwInRdmaReads",
3687 [IRDMA_HW_STAT_INDEX_RDMARXSNDS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3688 "iwInRdmaSends",
3689 [IRDMA_HW_STAT_INDEX_RDMARXWRS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3690 "iwInRdmaWrites",
3691 [IRDMA_HW_STAT_INDEX_RDMATXRDS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3692 "iwOutRdmaReads",
3693 [IRDMA_HW_STAT_INDEX_RDMATXSNDS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3694 "iwOutRdmaSends",
3695 [IRDMA_HW_STAT_INDEX_RDMATXWRS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3696 "iwOutRdmaWrites",
3697 [IRDMA_HW_STAT_INDEX_RDMAVBND + IRDMA_HW_STAT_INDEX_MAX_32].name =
3698 "iwRdmaBnd",
3699 [IRDMA_HW_STAT_INDEX_RDMAVINV + IRDMA_HW_STAT_INDEX_MAX_32].name =
3700 "iwRdmaInv",
3701 [IRDMA_HW_STAT_INDEX_UDPRXPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3702 "RxUDP",
3703 [IRDMA_HW_STAT_INDEX_UDPTXPKTS + IRDMA_HW_STAT_INDEX_MAX_32].name =
3704 "TxUDP",
3705 [IRDMA_HW_STAT_INDEX_RXNPECNMARKEDPKTS + IRDMA_HW_STAT_INDEX_MAX_32]
3706 .name = "RxECNMrkd",
3707 };
3708
3709 static void irdma_get_dev_fw_str(struct ib_device *dev, char *str)
3710 {
3711 struct irdma_device *iwdev = to_iwdev(dev);
3712
3713 snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u",
3714 irdma_fw_major_ver(&iwdev->rf->sc_dev),
3715 irdma_fw_minor_ver(&iwdev->rf->sc_dev));
3716 }
3717
3718 /**
3719 * irdma_alloc_hw_port_stats - Allocate a hw stats structure
3720 * @ibdev: device pointer from stack
3721 * @port_num: port number
3722 */
3723 static struct rdma_hw_stats *irdma_alloc_hw_port_stats(struct ib_device *ibdev,
3724 u32 port_num)
3725 {
3726 int num_counters = IRDMA_HW_STAT_INDEX_MAX_32 +
3727 IRDMA_HW_STAT_INDEX_MAX_64;
3728 unsigned long lifespan = RDMA_HW_STATS_DEFAULT_LIFESPAN;
3729
3730 BUILD_BUG_ON(ARRAY_SIZE(irdma_hw_stat_descs) !=
3731 (IRDMA_HW_STAT_INDEX_MAX_32 + IRDMA_HW_STAT_INDEX_MAX_64));
3732
3733 return rdma_alloc_hw_stats_struct(irdma_hw_stat_descs, num_counters,
3734 lifespan);
3735 }
3736
3737 /**
3738 * irdma_get_hw_stats - Populates the rdma_hw_stats structure
3739 * @ibdev: device pointer from stack
3740 * @stats: stats pointer from stack
3741 * @port_num: port number
3742 * @index: which hw counter the stack is requesting we update
3743 */
3744 static int irdma_get_hw_stats(struct ib_device *ibdev,
3745 struct rdma_hw_stats *stats, u32 port_num,
3746 int index)
3747 {
3748 struct irdma_device *iwdev = to_iwdev(ibdev);
3749 struct irdma_dev_hw_stats *hw_stats = &iwdev->vsi.pestat->hw_stats;
3750
3751 if (iwdev->rf->rdma_ver >= IRDMA_GEN_2)
3752 irdma_cqp_gather_stats_cmd(&iwdev->rf->sc_dev, iwdev->vsi.pestat, true);
3753 else
3754 irdma_cqp_gather_stats_gen1(&iwdev->rf->sc_dev, iwdev->vsi.pestat);
3755
3756 memcpy(&stats->value[0], hw_stats, sizeof(*hw_stats));
3757
3758 return stats->num_counters;
3759 }
3760
3761 /**
3762 * irdma_query_gid - Query port GID
3763 * @ibdev: device pointer from stack
3764 * @port: port number
3765 * @index: Entry index
3766 * @gid: Global ID
3767 */
3768 static int irdma_query_gid(struct ib_device *ibdev, u32 port, int index,
3769 union ib_gid *gid)
3770 {
3771 struct irdma_device *iwdev = to_iwdev(ibdev);
3772
3773 memset(gid->raw, 0, sizeof(gid->raw));
3774 ether_addr_copy(gid->raw, iwdev->netdev->dev_addr);
3775
3776 return 0;
3777 }
3778
3779 /**
3780 * mcast_list_add - Add a new mcast item to list
3781 * @rf: RDMA PCI function
3782 * @new_elem: pointer to element to add
3783 */
3784 static void mcast_list_add(struct irdma_pci_f *rf,
3785 struct mc_table_list *new_elem)
3786 {
3787 list_add(&new_elem->list, &rf->mc_qht_list.list);
3788 }
3789
3790 /**
3791 * mcast_list_del - Remove an mcast item from list
3792 * @mc_qht_elem: pointer to mcast table list element
3793 */
3794 static void mcast_list_del(struct mc_table_list *mc_qht_elem)
3795 {
3796 if (mc_qht_elem)
3797 list_del(&mc_qht_elem->list);
3798 }
3799
3800 /**
3801 * mcast_list_lookup_ip - Search mcast list for address
3802 * @rf: RDMA PCI function
3803 * @ip_mcast: pointer to mcast IP address
3804 */
3805 static struct mc_table_list *mcast_list_lookup_ip(struct irdma_pci_f *rf,
3806 u32 *ip_mcast)
3807 {
3808 struct mc_table_list *mc_qht_el;
3809 struct list_head *pos, *q;
3810
3811 list_for_each_safe (pos, q, &rf->mc_qht_list.list) {
3812 mc_qht_el = list_entry(pos, struct mc_table_list, list);
3813 if (!memcmp(mc_qht_el->mc_info.dest_ip, ip_mcast,
3814 sizeof(mc_qht_el->mc_info.dest_ip)))
3815 return mc_qht_el;
3816 }
3817
3818 return NULL;
3819 }
3820
3821 /**
3822 * irdma_mcast_cqp_op - perform a mcast cqp operation
3823 * @iwdev: irdma device
3824 * @mc_grp_ctx: mcast group info
3825 * @op: operation
3826 *
3827 * returns error status
3828 */
3829 static int irdma_mcast_cqp_op(struct irdma_device *iwdev,
3830 struct irdma_mcast_grp_info *mc_grp_ctx, u8 op)
3831 {
3832 struct cqp_cmds_info *cqp_info;
3833 struct irdma_cqp_request *cqp_request;
3834 int status;
3835
3836 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true);
3837 if (!cqp_request)
3838 return -ENOMEM;
3839
3840 cqp_request->info.in.u.mc_create.info = *mc_grp_ctx;
3841 cqp_info = &cqp_request->info;
3842 cqp_info->cqp_cmd = op;
3843 cqp_info->post_sq = 1;
3844 cqp_info->in.u.mc_create.scratch = (uintptr_t)cqp_request;
3845 cqp_info->in.u.mc_create.cqp = &iwdev->rf->cqp.sc_cqp;
3846 status = irdma_handle_cqp_op(iwdev->rf, cqp_request);
3847 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request);
3848
3849 return status;
3850 }
3851
3852 /**
3853 * irdma_mcast_mac - Get the multicast MAC for an IP address
3854 * @ip_addr: IPv4 or IPv6 address
3855 * @mac: pointer to result MAC address
3856 * @ipv4: flag indicating IPv4 or IPv6
3857 *
3858 */
3859 void irdma_mcast_mac(u32 *ip_addr, u8 *mac, bool ipv4)
3860 {
3861 u8 *ip = (u8 *)ip_addr;
3862
3863 if (ipv4) {
3864 unsigned char mac4[ETH_ALEN] = {0x01, 0x00, 0x5E, 0x00,
3865 0x00, 0x00};
3866
3867 mac4[3] = ip[2] & 0x7F;
3868 mac4[4] = ip[1];
3869 mac4[5] = ip[0];
3870 ether_addr_copy(mac, mac4);
3871 } else {
3872 unsigned char mac6[ETH_ALEN] = {0x33, 0x33, 0x00, 0x00,
3873 0x00, 0x00};
3874
3875 mac6[2] = ip[3];
3876 mac6[3] = ip[2];
3877 mac6[4] = ip[1];
3878 mac6[5] = ip[0];
3879 ether_addr_copy(mac, mac6);
3880 }
3881 }
3882
3883 /**
3884 * irdma_attach_mcast - attach a qp to a multicast group
3885 * @ibqp: ptr to qp
3886 * @ibgid: pointer to global ID
3887 * @lid: local ID
3888 *
3889 * returns error status
3890 */
3891 static int irdma_attach_mcast(struct ib_qp *ibqp, union ib_gid *ibgid, u16 lid)
3892 {
3893 struct irdma_qp *iwqp = to_iwqp(ibqp);
3894 struct irdma_device *iwdev = iwqp->iwdev;
3895 struct irdma_pci_f *rf = iwdev->rf;
3896 struct mc_table_list *mc_qht_elem;
3897 struct irdma_mcast_grp_ctx_entry_info mcg_info = {};
3898 unsigned long flags;
3899 u32 ip_addr[4] = {};
3900 u32 mgn;
3901 u32 no_mgs;
3902 int ret = 0;
3903 bool ipv4;
3904 u16 vlan_id;
3905 union irdma_sockaddr sgid_addr;
3906 unsigned char dmac[ETH_ALEN];
3907
3908 rdma_gid2ip((struct sockaddr *)&sgid_addr, ibgid);
3909
3910 if (!ipv6_addr_v4mapped((struct in6_addr *)ibgid)) {
3911 irdma_copy_ip_ntohl(ip_addr,
3912 sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32);
3913 irdma_netdev_vlan_ipv6(ip_addr, &vlan_id, NULL);
3914 ipv4 = false;
3915 ibdev_dbg(&iwdev->ibdev,
3916 "VERBS: qp_id=%d, IP6address=%pI6\n", ibqp->qp_num,
3917 ip_addr);
3918 irdma_mcast_mac(ip_addr, dmac, false);
3919 } else {
3920 ip_addr[0] = ntohl(sgid_addr.saddr_in.sin_addr.s_addr);
3921 ipv4 = true;
3922 vlan_id = irdma_get_vlan_ipv4(ip_addr);
3923 irdma_mcast_mac(ip_addr, dmac, true);
3924 ibdev_dbg(&iwdev->ibdev,
3925 "VERBS: qp_id=%d, IP4address=%pI4, MAC=%pM\n",
3926 ibqp->qp_num, ip_addr, dmac);
3927 }
3928
3929 spin_lock_irqsave(&rf->qh_list_lock, flags);
3930 mc_qht_elem = mcast_list_lookup_ip(rf, ip_addr);
3931 if (!mc_qht_elem) {
3932 struct irdma_dma_mem *dma_mem_mc;
3933
3934 spin_unlock_irqrestore(&rf->qh_list_lock, flags);
3935 mc_qht_elem = kzalloc(sizeof(*mc_qht_elem), GFP_KERNEL);
3936 if (!mc_qht_elem)
3937 return -ENOMEM;
3938
3939 mc_qht_elem->mc_info.ipv4_valid = ipv4;
3940 memcpy(mc_qht_elem->mc_info.dest_ip, ip_addr,
3941 sizeof(mc_qht_elem->mc_info.dest_ip));
3942 ret = irdma_alloc_rsrc(rf, rf->allocated_mcgs, rf->max_mcg,
3943 &mgn, &rf->next_mcg);
3944 if (ret) {
3945 kfree(mc_qht_elem);
3946 return -ENOMEM;
3947 }
3948
3949 mc_qht_elem->mc_info.mgn = mgn;
3950 dma_mem_mc = &mc_qht_elem->mc_grp_ctx.dma_mem_mc;
3951 dma_mem_mc->size = ALIGN(sizeof(u64) * IRDMA_MAX_MGS_PER_CTX,
3952 IRDMA_HW_PAGE_SIZE);
3953 dma_mem_mc->va = dma_alloc_coherent(rf->hw.device,
3954 dma_mem_mc->size,
3955 &dma_mem_mc->pa,
3956 GFP_KERNEL);
3957 if (!dma_mem_mc->va) {
3958 irdma_free_rsrc(rf, rf->allocated_mcgs, mgn);
3959 kfree(mc_qht_elem);
3960 return -ENOMEM;
3961 }
3962
3963 mc_qht_elem->mc_grp_ctx.mg_id = (u16)mgn;
3964 memcpy(mc_qht_elem->mc_grp_ctx.dest_ip_addr, ip_addr,
3965 sizeof(mc_qht_elem->mc_grp_ctx.dest_ip_addr));
3966 mc_qht_elem->mc_grp_ctx.ipv4_valid = ipv4;
3967 mc_qht_elem->mc_grp_ctx.vlan_id = vlan_id;
3968 if (vlan_id < VLAN_N_VID)
3969 mc_qht_elem->mc_grp_ctx.vlan_valid = true;
3970 mc_qht_elem->mc_grp_ctx.hmc_fcn_id = iwdev->vsi.fcn_id;
3971 mc_qht_elem->mc_grp_ctx.qs_handle =
3972 iwqp->sc_qp.vsi->qos[iwqp->sc_qp.user_pri].qs_handle;
3973 ether_addr_copy(mc_qht_elem->mc_grp_ctx.dest_mac_addr, dmac);
3974
3975 spin_lock_irqsave(&rf->qh_list_lock, flags);
3976 mcast_list_add(rf, mc_qht_elem);
3977 } else {
3978 if (mc_qht_elem->mc_grp_ctx.no_of_mgs ==
3979 IRDMA_MAX_MGS_PER_CTX) {
3980 spin_unlock_irqrestore(&rf->qh_list_lock, flags);
3981 return -ENOMEM;
3982 }
3983 }
3984
3985 mcg_info.qp_id = iwqp->ibqp.qp_num;
3986 no_mgs = mc_qht_elem->mc_grp_ctx.no_of_mgs;
3987 irdma_sc_add_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info);
3988 spin_unlock_irqrestore(&rf->qh_list_lock, flags);
3989
3990 /* Only if there is a change do we need to modify or create */
3991 if (!no_mgs) {
3992 ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx,
3993 IRDMA_OP_MC_CREATE);
3994 } else if (no_mgs != mc_qht_elem->mc_grp_ctx.no_of_mgs) {
3995 ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx,
3996 IRDMA_OP_MC_MODIFY);
3997 } else {
3998 return 0;
3999 }
4000
4001 if (ret)
4002 goto error;
4003
4004 return 0;
4005
4006 error:
4007 irdma_sc_del_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info);
4008 if (!mc_qht_elem->mc_grp_ctx.no_of_mgs) {
4009 mcast_list_del(mc_qht_elem);
4010 dma_free_coherent(rf->hw.device,
4011 mc_qht_elem->mc_grp_ctx.dma_mem_mc.size,
4012 mc_qht_elem->mc_grp_ctx.dma_mem_mc.va,
4013 mc_qht_elem->mc_grp_ctx.dma_mem_mc.pa);
4014 mc_qht_elem->mc_grp_ctx.dma_mem_mc.va = NULL;
4015 irdma_free_rsrc(rf, rf->allocated_mcgs,
4016 mc_qht_elem->mc_grp_ctx.mg_id);
4017 kfree(mc_qht_elem);
4018 }
4019
4020 return ret;
4021 }
4022
4023 /**
4024 * irdma_detach_mcast - detach a qp from a multicast group
4025 * @ibqp: ptr to qp
4026 * @ibgid: pointer to global ID
4027 * @lid: local ID
4028 *
4029 * returns error status
4030 */
4031 static int irdma_detach_mcast(struct ib_qp *ibqp, union ib_gid *ibgid, u16 lid)
4032 {
4033 struct irdma_qp *iwqp = to_iwqp(ibqp);
4034 struct irdma_device *iwdev = iwqp->iwdev;
4035 struct irdma_pci_f *rf = iwdev->rf;
4036 u32 ip_addr[4] = {};
4037 struct mc_table_list *mc_qht_elem;
4038 struct irdma_mcast_grp_ctx_entry_info mcg_info = {};
4039 int ret;
4040 unsigned long flags;
4041 union irdma_sockaddr sgid_addr;
4042
4043 rdma_gid2ip((struct sockaddr *)&sgid_addr, ibgid);
4044 if (!ipv6_addr_v4mapped((struct in6_addr *)ibgid))
4045 irdma_copy_ip_ntohl(ip_addr,
4046 sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32);
4047 else
4048 ip_addr[0] = ntohl(sgid_addr.saddr_in.sin_addr.s_addr);
4049
4050 spin_lock_irqsave(&rf->qh_list_lock, flags);
4051 mc_qht_elem = mcast_list_lookup_ip(rf, ip_addr);
4052 if (!mc_qht_elem) {
4053 spin_unlock_irqrestore(&rf->qh_list_lock, flags);
4054 ibdev_dbg(&iwdev->ibdev,
4055 "VERBS: address not found MCG\n");
4056 return 0;
4057 }
4058
4059 mcg_info.qp_id = iwqp->ibqp.qp_num;
4060 irdma_sc_del_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info);
4061 if (!mc_qht_elem->mc_grp_ctx.no_of_mgs) {
4062 mcast_list_del(mc_qht_elem);
4063 spin_unlock_irqrestore(&rf->qh_list_lock, flags);
4064 ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx,
4065 IRDMA_OP_MC_DESTROY);
4066 if (ret) {
4067 ibdev_dbg(&iwdev->ibdev,
4068 "VERBS: failed MC_DESTROY MCG\n");
4069 spin_lock_irqsave(&rf->qh_list_lock, flags);
4070 mcast_list_add(rf, mc_qht_elem);
4071 spin_unlock_irqrestore(&rf->qh_list_lock, flags);
4072 return -EAGAIN;
4073 }
4074
4075 dma_free_coherent(rf->hw.device,
4076 mc_qht_elem->mc_grp_ctx.dma_mem_mc.size,
4077 mc_qht_elem->mc_grp_ctx.dma_mem_mc.va,
4078 mc_qht_elem->mc_grp_ctx.dma_mem_mc.pa);
4079 mc_qht_elem->mc_grp_ctx.dma_mem_mc.va = NULL;
4080 irdma_free_rsrc(rf, rf->allocated_mcgs,
4081 mc_qht_elem->mc_grp_ctx.mg_id);
4082 kfree(mc_qht_elem);
4083 } else {
4084 spin_unlock_irqrestore(&rf->qh_list_lock, flags);
4085 ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx,
4086 IRDMA_OP_MC_MODIFY);
4087 if (ret) {
4088 ibdev_dbg(&iwdev->ibdev,
4089 "VERBS: failed Modify MCG\n");
4090 return ret;
4091 }
4092 }
4093
4094 return 0;
4095 }
4096
4097 static int irdma_create_hw_ah(struct irdma_device *iwdev, struct irdma_ah *ah, bool sleep)
4098 {
4099 struct irdma_pci_f *rf = iwdev->rf;
4100 int err;
4101
4102 err = irdma_alloc_rsrc(rf, rf->allocated_ahs, rf->max_ah, &ah->sc_ah.ah_info.ah_idx,
4103 &rf->next_ah);
4104 if (err)
4105 return err;
4106
4107 err = irdma_ah_cqp_op(rf, &ah->sc_ah, IRDMA_OP_AH_CREATE, sleep,
4108 irdma_gsi_ud_qp_ah_cb, &ah->sc_ah);
4109
4110 if (err) {
4111 ibdev_dbg(&iwdev->ibdev, "VERBS: CQP-OP Create AH fail");
4112 goto err_ah_create;
4113 }
4114
4115 if (!sleep) {
4116 int cnt = CQP_COMPL_WAIT_TIME_MS * CQP_TIMEOUT_THRESHOLD;
4117
4118 do {
4119 irdma_cqp_ce_handler(rf, &rf->ccq.sc_cq);
4120 mdelay(1);
4121 } while (!ah->sc_ah.ah_info.ah_valid && --cnt);
4122
4123 if (!cnt) {
4124 ibdev_dbg(&iwdev->ibdev, "VERBS: CQP create AH timed out");
4125 err = -ETIMEDOUT;
4126 goto err_ah_create;
4127 }
4128 }
4129 return 0;
4130
4131 err_ah_create:
4132 irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_ahs, ah->sc_ah.ah_info.ah_idx);
4133
4134 return err;
4135 }
4136
4137 static int irdma_setup_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *attr)
4138 {
4139 struct irdma_pd *pd = to_iwpd(ibah->pd);
4140 struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah);
4141 struct rdma_ah_attr *ah_attr = attr->ah_attr;
4142 const struct ib_gid_attr *sgid_attr;
4143 struct irdma_device *iwdev = to_iwdev(ibah->pd->device);
4144 struct irdma_pci_f *rf = iwdev->rf;
4145 struct irdma_sc_ah *sc_ah;
4146 struct irdma_ah_info *ah_info;
4147 union irdma_sockaddr sgid_addr, dgid_addr;
4148 int err;
4149 u8 dmac[ETH_ALEN];
4150
4151 ah->pd = pd;
4152 sc_ah = &ah->sc_ah;
4153 sc_ah->ah_info.vsi = &iwdev->vsi;
4154 irdma_sc_init_ah(&rf->sc_dev, sc_ah);
4155 ah->sgid_index = ah_attr->grh.sgid_index;
4156 sgid_attr = ah_attr->grh.sgid_attr;
4157 memcpy(&ah->dgid, &ah_attr->grh.dgid, sizeof(ah->dgid));
4158 rdma_gid2ip((struct sockaddr *)&sgid_addr, &sgid_attr->gid);
4159 rdma_gid2ip((struct sockaddr *)&dgid_addr, &ah_attr->grh.dgid);
4160 ah->av.attrs = *ah_attr;
4161 ah->av.net_type = rdma_gid_attr_network_type(sgid_attr);
4162 ah_info = &sc_ah->ah_info;
4163 ah_info->pd_idx = pd->sc_pd.pd_id;
4164 if (ah_attr->ah_flags & IB_AH_GRH) {
4165 ah_info->flow_label = ah_attr->grh.flow_label;
4166 ah_info->hop_ttl = ah_attr->grh.hop_limit;
4167 ah_info->tc_tos = ah_attr->grh.traffic_class;
4168 }
4169
4170 ether_addr_copy(dmac, ah_attr->roce.dmac);
4171 if (ah->av.net_type == RDMA_NETWORK_IPV4) {
4172 ah_info->ipv4_valid = true;
4173 ah_info->dest_ip_addr[0] =
4174 ntohl(dgid_addr.saddr_in.sin_addr.s_addr);
4175 ah_info->src_ip_addr[0] =
4176 ntohl(sgid_addr.saddr_in.sin_addr.s_addr);
4177 ah_info->do_lpbk = irdma_ipv4_is_lpb(ah_info->src_ip_addr[0],
4178 ah_info->dest_ip_addr[0]);
4179 if (ipv4_is_multicast(dgid_addr.saddr_in.sin_addr.s_addr)) {
4180 ah_info->do_lpbk = true;
4181 irdma_mcast_mac(ah_info->dest_ip_addr, dmac, true);
4182 }
4183 } else {
4184 irdma_copy_ip_ntohl(ah_info->dest_ip_addr,
4185 dgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32);
4186 irdma_copy_ip_ntohl(ah_info->src_ip_addr,
4187 sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32);
4188 ah_info->do_lpbk = irdma_ipv6_is_lpb(ah_info->src_ip_addr,
4189 ah_info->dest_ip_addr);
4190 if (rdma_is_multicast_addr(&dgid_addr.saddr_in6.sin6_addr)) {
4191 ah_info->do_lpbk = true;
4192 irdma_mcast_mac(ah_info->dest_ip_addr, dmac, false);
4193 }
4194 }
4195
4196 err = rdma_read_gid_l2_fields(sgid_attr, &ah_info->vlan_tag,
4197 ah_info->mac_addr);
4198 if (err)
4199 return err;
4200
4201 ah_info->dst_arpindex = irdma_add_arp(iwdev->rf, ah_info->dest_ip_addr,
4202 ah_info->ipv4_valid, dmac);
4203
4204 if (ah_info->dst_arpindex == -1)
4205 return -EINVAL;
4206
4207 if (ah_info->vlan_tag >= VLAN_N_VID && iwdev->dcb_vlan_mode)
4208 ah_info->vlan_tag = 0;
4209
4210 if (ah_info->vlan_tag < VLAN_N_VID) {
4211 ah_info->insert_vlan_tag = true;
4212 ah_info->vlan_tag |=
4213 rt_tos2priority(ah_info->tc_tos) << VLAN_PRIO_SHIFT;
4214 }
4215
4216 return 0;
4217 }
4218
4219 /**
4220 * irdma_ah_exists - Check for existing identical AH
4221 * @iwdev: irdma device
4222 * @new_ah: AH to check for
4223 *
4224 * returns true if AH is found, false if not found.
4225 */
4226 static bool irdma_ah_exists(struct irdma_device *iwdev,
4227 struct irdma_ah *new_ah)
4228 {
4229 struct irdma_ah *ah;
4230 u32 key = new_ah->sc_ah.ah_info.dest_ip_addr[0] ^
4231 new_ah->sc_ah.ah_info.dest_ip_addr[1] ^
4232 new_ah->sc_ah.ah_info.dest_ip_addr[2] ^
4233 new_ah->sc_ah.ah_info.dest_ip_addr[3];
4234
4235 hash_for_each_possible(iwdev->ah_hash_tbl, ah, list, key) {
4236 /* Set ah_valid and ah_id the same so memcmp can work */
4237 new_ah->sc_ah.ah_info.ah_idx = ah->sc_ah.ah_info.ah_idx;
4238 new_ah->sc_ah.ah_info.ah_valid = ah->sc_ah.ah_info.ah_valid;
4239 if (!memcmp(&ah->sc_ah.ah_info, &new_ah->sc_ah.ah_info,
4240 sizeof(ah->sc_ah.ah_info))) {
4241 refcount_inc(&ah->refcnt);
4242 new_ah->parent_ah = ah;
4243 return true;
4244 }
4245 }
4246
4247 return false;
4248 }
4249
4250 /**
4251 * irdma_destroy_ah - Destroy address handle
4252 * @ibah: pointer to address handle
4253 * @ah_flags: flags for sleepable
4254 */
4255 static int irdma_destroy_ah(struct ib_ah *ibah, u32 ah_flags)
4256 {
4257 struct irdma_device *iwdev = to_iwdev(ibah->device);
4258 struct irdma_ah *ah = to_iwah(ibah);
4259
4260 if ((ah_flags & RDMA_DESTROY_AH_SLEEPABLE) && ah->parent_ah) {
4261 mutex_lock(&iwdev->ah_tbl_lock);
4262 if (!refcount_dec_and_test(&ah->parent_ah->refcnt)) {
4263 mutex_unlock(&iwdev->ah_tbl_lock);
4264 return 0;
4265 }
4266 hash_del(&ah->parent_ah->list);
4267 kfree(ah->parent_ah);
4268 mutex_unlock(&iwdev->ah_tbl_lock);
4269 }
4270
4271 irdma_ah_cqp_op(iwdev->rf, &ah->sc_ah, IRDMA_OP_AH_DESTROY,
4272 false, NULL, ah);
4273
4274 irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_ahs,
4275 ah->sc_ah.ah_info.ah_idx);
4276
4277 return 0;
4278 }
4279
4280 /**
4281 * irdma_create_user_ah - create user address handle
4282 * @ibah: address handle
4283 * @attr: address handle attributes
4284 * @udata: User data
4285 *
4286 * returns 0 on success, error otherwise
4287 */
4288 static int irdma_create_user_ah(struct ib_ah *ibah,
4289 struct rdma_ah_init_attr *attr,
4290 struct ib_udata *udata)
4291 {
4292 struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah);
4293 struct irdma_device *iwdev = to_iwdev(ibah->pd->device);
4294 struct irdma_create_ah_resp uresp;
4295 struct irdma_ah *parent_ah;
4296 int err;
4297
4298 err = irdma_setup_ah(ibah, attr);
4299 if (err)
4300 return err;
4301 mutex_lock(&iwdev->ah_tbl_lock);
4302 if (!irdma_ah_exists(iwdev, ah)) {
4303 err = irdma_create_hw_ah(iwdev, ah, true);
4304 if (err) {
4305 mutex_unlock(&iwdev->ah_tbl_lock);
4306 return err;
4307 }
4308 /* Add new AH to list */
4309 parent_ah = kmemdup(ah, sizeof(*ah), GFP_KERNEL);
4310 if (parent_ah) {
4311 u32 key = parent_ah->sc_ah.ah_info.dest_ip_addr[0] ^
4312 parent_ah->sc_ah.ah_info.dest_ip_addr[1] ^
4313 parent_ah->sc_ah.ah_info.dest_ip_addr[2] ^
4314 parent_ah->sc_ah.ah_info.dest_ip_addr[3];
4315
4316 ah->parent_ah = parent_ah;
4317 hash_add(iwdev->ah_hash_tbl, &parent_ah->list, key);
4318 refcount_set(&parent_ah->refcnt, 1);
4319 }
4320 }
4321 mutex_unlock(&iwdev->ah_tbl_lock);
4322
4323 uresp.ah_id = ah->sc_ah.ah_info.ah_idx;
4324 err = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp), udata->outlen));
4325 if (err)
4326 irdma_destroy_ah(ibah, attr->flags);
4327
4328 return err;
4329 }
4330
4331 /**
4332 * irdma_create_ah - create address handle
4333 * @ibah: address handle
4334 * @attr: address handle attributes
4335 * @udata: NULL
4336 *
4337 * returns 0 on success, error otherwise
4338 */
4339 static int irdma_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *attr,
4340 struct ib_udata *udata)
4341 {
4342 struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah);
4343 struct irdma_device *iwdev = to_iwdev(ibah->pd->device);
4344 int err;
4345
4346 err = irdma_setup_ah(ibah, attr);
4347 if (err)
4348 return err;
4349 err = irdma_create_hw_ah(iwdev, ah, attr->flags & RDMA_CREATE_AH_SLEEPABLE);
4350
4351 return err;
4352 }
4353
4354 /**
4355 * irdma_query_ah - Query address handle
4356 * @ibah: pointer to address handle
4357 * @ah_attr: address handle attributes
4358 */
4359 static int irdma_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
4360 {
4361 struct irdma_ah *ah = to_iwah(ibah);
4362
4363 memset(ah_attr, 0, sizeof(*ah_attr));
4364 if (ah->av.attrs.ah_flags & IB_AH_GRH) {
4365 ah_attr->ah_flags = IB_AH_GRH;
4366 ah_attr->grh.flow_label = ah->sc_ah.ah_info.flow_label;
4367 ah_attr->grh.traffic_class = ah->sc_ah.ah_info.tc_tos;
4368 ah_attr->grh.hop_limit = ah->sc_ah.ah_info.hop_ttl;
4369 ah_attr->grh.sgid_index = ah->sgid_index;
4370 ah_attr->grh.sgid_index = ah->sgid_index;
4371 memcpy(&ah_attr->grh.dgid, &ah->dgid,
4372 sizeof(ah_attr->grh.dgid));
4373 }
4374
4375 return 0;
4376 }
4377
4378 static enum rdma_link_layer irdma_get_link_layer(struct ib_device *ibdev,
4379 u32 port_num)
4380 {
4381 return IB_LINK_LAYER_ETHERNET;
4382 }
4383
4384 static const struct ib_device_ops irdma_roce_dev_ops = {
4385 .attach_mcast = irdma_attach_mcast,
4386 .create_ah = irdma_create_ah,
4387 .create_user_ah = irdma_create_user_ah,
4388 .destroy_ah = irdma_destroy_ah,
4389 .detach_mcast = irdma_detach_mcast,
4390 .get_link_layer = irdma_get_link_layer,
4391 .get_port_immutable = irdma_roce_port_immutable,
4392 .modify_qp = irdma_modify_qp_roce,
4393 .query_ah = irdma_query_ah,
4394 .query_pkey = irdma_query_pkey,
4395 };
4396
4397 static const struct ib_device_ops irdma_iw_dev_ops = {
4398 .modify_qp = irdma_modify_qp,
4399 .get_port_immutable = irdma_iw_port_immutable,
4400 .query_gid = irdma_query_gid,
4401 };
4402
4403 static const struct ib_device_ops irdma_dev_ops = {
4404 .owner = THIS_MODULE,
4405 .driver_id = RDMA_DRIVER_IRDMA,
4406 .uverbs_abi_ver = IRDMA_ABI_VER,
4407
4408 .alloc_hw_port_stats = irdma_alloc_hw_port_stats,
4409 .alloc_mr = irdma_alloc_mr,
4410 .alloc_mw = irdma_alloc_mw,
4411 .alloc_pd = irdma_alloc_pd,
4412 .alloc_ucontext = irdma_alloc_ucontext,
4413 .create_cq = irdma_create_cq,
4414 .create_qp = irdma_create_qp,
4415 .dealloc_driver = irdma_ib_dealloc_device,
4416 .dealloc_mw = irdma_dealloc_mw,
4417 .dealloc_pd = irdma_dealloc_pd,
4418 .dealloc_ucontext = irdma_dealloc_ucontext,
4419 .dereg_mr = irdma_dereg_mr,
4420 .destroy_cq = irdma_destroy_cq,
4421 .destroy_qp = irdma_destroy_qp,
4422 .disassociate_ucontext = irdma_disassociate_ucontext,
4423 .get_dev_fw_str = irdma_get_dev_fw_str,
4424 .get_dma_mr = irdma_get_dma_mr,
4425 .get_hw_stats = irdma_get_hw_stats,
4426 .map_mr_sg = irdma_map_mr_sg,
4427 .mmap = irdma_mmap,
4428 .mmap_free = irdma_mmap_free,
4429 .poll_cq = irdma_poll_cq,
4430 .post_recv = irdma_post_recv,
4431 .post_send = irdma_post_send,
4432 .query_device = irdma_query_device,
4433 .query_port = irdma_query_port,
4434 .query_qp = irdma_query_qp,
4435 .reg_user_mr = irdma_reg_user_mr,
4436 .req_notify_cq = irdma_req_notify_cq,
4437 .resize_cq = irdma_resize_cq,
4438 INIT_RDMA_OBJ_SIZE(ib_pd, irdma_pd, ibpd),
4439 INIT_RDMA_OBJ_SIZE(ib_ucontext, irdma_ucontext, ibucontext),
4440 INIT_RDMA_OBJ_SIZE(ib_ah, irdma_ah, ibah),
4441 INIT_RDMA_OBJ_SIZE(ib_cq, irdma_cq, ibcq),
4442 INIT_RDMA_OBJ_SIZE(ib_mw, irdma_mr, ibmw),
4443 INIT_RDMA_OBJ_SIZE(ib_qp, irdma_qp, ibqp),
4444 };
4445
4446 /**
4447 * irdma_init_roce_device - initialization of roce rdma device
4448 * @iwdev: irdma device
4449 */
4450 static void irdma_init_roce_device(struct irdma_device *iwdev)
4451 {
4452 iwdev->ibdev.node_type = RDMA_NODE_IB_CA;
4453 addrconf_addr_eui48((u8 *)&iwdev->ibdev.node_guid,
4454 iwdev->netdev->dev_addr);
4455 ib_set_device_ops(&iwdev->ibdev, &irdma_roce_dev_ops);
4456 }
4457
4458 /**
4459 * irdma_init_iw_device - initialization of iwarp rdma device
4460 * @iwdev: irdma device
4461 */
4462 static int irdma_init_iw_device(struct irdma_device *iwdev)
4463 {
4464 struct net_device *netdev = iwdev->netdev;
4465
4466 iwdev->ibdev.node_type = RDMA_NODE_RNIC;
4467 addrconf_addr_eui48((u8 *)&iwdev->ibdev.node_guid,
4468 netdev->dev_addr);
4469 iwdev->ibdev.ops.iw_add_ref = irdma_qp_add_ref;
4470 iwdev->ibdev.ops.iw_rem_ref = irdma_qp_rem_ref;
4471 iwdev->ibdev.ops.iw_get_qp = irdma_get_qp;
4472 iwdev->ibdev.ops.iw_connect = irdma_connect;
4473 iwdev->ibdev.ops.iw_accept = irdma_accept;
4474 iwdev->ibdev.ops.iw_reject = irdma_reject;
4475 iwdev->ibdev.ops.iw_create_listen = irdma_create_listen;
4476 iwdev->ibdev.ops.iw_destroy_listen = irdma_destroy_listen;
4477 memcpy(iwdev->ibdev.iw_ifname, netdev->name,
4478 sizeof(iwdev->ibdev.iw_ifname));
4479 ib_set_device_ops(&iwdev->ibdev, &irdma_iw_dev_ops);
4480
4481 return 0;
4482 }
4483
4484 /**
4485 * irdma_init_rdma_device - initialization of rdma device
4486 * @iwdev: irdma device
4487 */
4488 static int irdma_init_rdma_device(struct irdma_device *iwdev)
4489 {
4490 struct pci_dev *pcidev = iwdev->rf->pcidev;
4491 int ret;
4492
4493 if (iwdev->roce_mode) {
4494 irdma_init_roce_device(iwdev);
4495 } else {
4496 ret = irdma_init_iw_device(iwdev);
4497 if (ret)
4498 return ret;
4499 }
4500 iwdev->ibdev.phys_port_cnt = 1;
4501 iwdev->ibdev.num_comp_vectors = iwdev->rf->ceqs_count;
4502 iwdev->ibdev.dev.parent = &pcidev->dev;
4503 ib_set_device_ops(&iwdev->ibdev, &irdma_dev_ops);
4504
4505 return 0;
4506 }
4507
4508 /**
4509 * irdma_port_ibevent - indicate port event
4510 * @iwdev: irdma device
4511 */
4512 void irdma_port_ibevent(struct irdma_device *iwdev)
4513 {
4514 struct ib_event event;
4515
4516 event.device = &iwdev->ibdev;
4517 event.element.port_num = 1;
4518 event.event =
4519 iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
4520 ib_dispatch_event(&event);
4521 }
4522
4523 /**
4524 * irdma_ib_unregister_device - unregister rdma device from IB
4525 * core
4526 * @iwdev: irdma device
4527 */
4528 void irdma_ib_unregister_device(struct irdma_device *iwdev)
4529 {
4530 iwdev->iw_status = 0;
4531 irdma_port_ibevent(iwdev);
4532 ib_unregister_device(&iwdev->ibdev);
4533 }
4534
4535 /**
4536 * irdma_ib_register_device - register irdma device to IB core
4537 * @iwdev: irdma device
4538 */
4539 int irdma_ib_register_device(struct irdma_device *iwdev)
4540 {
4541 int ret;
4542
4543 ret = irdma_init_rdma_device(iwdev);
4544 if (ret)
4545 return ret;
4546
4547 ret = ib_device_set_netdev(&iwdev->ibdev, iwdev->netdev, 1);
4548 if (ret)
4549 goto error;
4550 dma_set_max_seg_size(iwdev->rf->hw.device, UINT_MAX);
4551 ret = ib_register_device(&iwdev->ibdev, "irdma%d", iwdev->rf->hw.device);
4552 if (ret)
4553 goto error;
4554
4555 iwdev->iw_status = 1;
4556 irdma_port_ibevent(iwdev);
4557
4558 return 0;
4559
4560 error:
4561 if (ret)
4562 ibdev_dbg(&iwdev->ibdev, "VERBS: Register RDMA device fail\n");
4563
4564 return ret;
4565 }
4566
4567 /**
4568 * irdma_ib_dealloc_device
4569 * @ibdev: ib device
4570 *
4571 * callback from ibdev dealloc_driver to deallocate resources
4572 * unber irdma device
4573 */
4574 void irdma_ib_dealloc_device(struct ib_device *ibdev)
4575 {
4576 struct irdma_device *iwdev = to_iwdev(ibdev);
4577
4578 irdma_rt_deinit_hw(iwdev);
4579 irdma_ctrl_deinit_hw(iwdev->rf);
4580 kfree(iwdev->rf);
4581 }
Michael's Linux tree.