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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[mirror_ubuntu-zesty-kernel.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
1 /*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/device.h>
35 #include <linux/netdevice.h>
36 #include <linux/etherdevice.h>
37 #include <linux/delay.h>
38 #include <linux/errno.h>
39 #include <linux/list.h>
40 #include <linux/sched.h>
41 #include <linux/spinlock.h>
42 #include <linux/ethtool.h>
43 #include <linux/rtnetlink.h>
44 #include <linux/inetdevice.h>
45 #include <linux/slab.h>
46
47 #include <asm/io.h>
48 #include <asm/irq.h>
49 #include <asm/byteorder.h>
50
51 #include <rdma/iw_cm.h>
52 #include <rdma/ib_verbs.h>
53 #include <rdma/ib_smi.h>
54 #include <rdma/ib_umem.h>
55 #include <rdma/ib_user_verbs.h>
56
57 #include "cxio_hal.h"
58 #include "iwch.h"
59 #include "iwch_provider.h"
60 #include "iwch_cm.h"
61 #include "iwch_user.h"
62 #include "common.h"
63
64 static int iwch_modify_port(struct ib_device *ibdev,
65 u8 port, int port_modify_mask,
66 struct ib_port_modify *props)
67 {
68 return -ENOSYS;
69 }
70
71 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
72 struct ib_ah_attr *ah_attr)
73 {
74 return ERR_PTR(-ENOSYS);
75 }
76
77 static int iwch_ah_destroy(struct ib_ah *ah)
78 {
79 return -ENOSYS;
80 }
81
82 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
83 {
84 return -ENOSYS;
85 }
86
87 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
88 {
89 return -ENOSYS;
90 }
91
92 static int iwch_process_mad(struct ib_device *ibdev,
93 int mad_flags,
94 u8 port_num,
95 struct ib_wc *in_wc,
96 struct ib_grh *in_grh,
97 struct ib_mad *in_mad, struct ib_mad *out_mad)
98 {
99 return -ENOSYS;
100 }
101
102 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
103 {
104 struct iwch_dev *rhp = to_iwch_dev(context->device);
105 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
106 struct iwch_mm_entry *mm, *tmp;
107
108 PDBG("%s context %p\n", __func__, context);
109 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
110 kfree(mm);
111 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
112 kfree(ucontext);
113 return 0;
114 }
115
116 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
117 struct ib_udata *udata)
118 {
119 struct iwch_ucontext *context;
120 struct iwch_dev *rhp = to_iwch_dev(ibdev);
121
122 PDBG("%s ibdev %p\n", __func__, ibdev);
123 context = kzalloc(sizeof(*context), GFP_KERNEL);
124 if (!context)
125 return ERR_PTR(-ENOMEM);
126 cxio_init_ucontext(&rhp->rdev, &context->uctx);
127 INIT_LIST_HEAD(&context->mmaps);
128 spin_lock_init(&context->mmap_lock);
129 return &context->ibucontext;
130 }
131
132 static int iwch_destroy_cq(struct ib_cq *ib_cq)
133 {
134 struct iwch_cq *chp;
135
136 PDBG("%s ib_cq %p\n", __func__, ib_cq);
137 chp = to_iwch_cq(ib_cq);
138
139 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
140 atomic_dec(&chp->refcnt);
141 wait_event(chp->wait, !atomic_read(&chp->refcnt));
142
143 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
144 kfree(chp);
145 return 0;
146 }
147
148 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
149 struct ib_ucontext *ib_context,
150 struct ib_udata *udata)
151 {
152 struct iwch_dev *rhp;
153 struct iwch_cq *chp;
154 struct iwch_create_cq_resp uresp;
155 struct iwch_create_cq_req ureq;
156 struct iwch_ucontext *ucontext = NULL;
157
158 PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
159 rhp = to_iwch_dev(ibdev);
160 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
161 if (!chp)
162 return ERR_PTR(-ENOMEM);
163
164 if (ib_context) {
165 ucontext = to_iwch_ucontext(ib_context);
166 if (!t3a_device(rhp)) {
167 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
168 kfree(chp);
169 return ERR_PTR(-EFAULT);
170 }
171 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
172 }
173 }
174
175 if (t3a_device(rhp)) {
176
177 /*
178 * T3A: Add some fluff to handle extra CQEs inserted
179 * for various errors.
180 * Additional CQE possibilities:
181 * TERMINATE,
182 * incoming RDMA WRITE Failures
183 * incoming RDMA READ REQUEST FAILUREs
184 * NOTE: We cannot ensure the CQ won't overflow.
185 */
186 entries += 16;
187 }
188 entries = roundup_pow_of_two(entries);
189 chp->cq.size_log2 = ilog2(entries);
190
191 if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
192 kfree(chp);
193 return ERR_PTR(-ENOMEM);
194 }
195 chp->rhp = rhp;
196 chp->ibcq.cqe = 1 << chp->cq.size_log2;
197 spin_lock_init(&chp->lock);
198 atomic_set(&chp->refcnt, 1);
199 init_waitqueue_head(&chp->wait);
200 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
201 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
202 kfree(chp);
203 return ERR_PTR(-ENOMEM);
204 }
205
206 if (ucontext) {
207 struct iwch_mm_entry *mm;
208
209 mm = kmalloc(sizeof *mm, GFP_KERNEL);
210 if (!mm) {
211 iwch_destroy_cq(&chp->ibcq);
212 return ERR_PTR(-ENOMEM);
213 }
214 uresp.cqid = chp->cq.cqid;
215 uresp.size_log2 = chp->cq.size_log2;
216 spin_lock(&ucontext->mmap_lock);
217 uresp.key = ucontext->key;
218 ucontext->key += PAGE_SIZE;
219 spin_unlock(&ucontext->mmap_lock);
220 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
221 kfree(mm);
222 iwch_destroy_cq(&chp->ibcq);
223 return ERR_PTR(-EFAULT);
224 }
225 mm->key = uresp.key;
226 mm->addr = virt_to_phys(chp->cq.queue);
227 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
228 sizeof (struct t3_cqe));
229 insert_mmap(ucontext, mm);
230 }
231 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
232 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
233 (unsigned long long) chp->cq.dma_addr);
234 return &chp->ibcq;
235 }
236
237 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
238 {
239 #ifdef notyet
240 struct iwch_cq *chp = to_iwch_cq(cq);
241 struct t3_cq oldcq, newcq;
242 int ret;
243
244 PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
245
246 /* We don't downsize... */
247 if (cqe <= cq->cqe)
248 return 0;
249
250 /* create new t3_cq with new size */
251 cqe = roundup_pow_of_two(cqe+1);
252 newcq.size_log2 = ilog2(cqe);
253
254 /* Dont allow resize to less than the current wce count */
255 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
256 return -ENOMEM;
257 }
258
259 /* Quiesce all QPs using this CQ */
260 ret = iwch_quiesce_qps(chp);
261 if (ret) {
262 return ret;
263 }
264
265 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
266 if (ret) {
267 return ret;
268 }
269
270 /* copy CQEs */
271 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
272 sizeof(struct t3_cqe));
273
274 /* old iwch_qp gets new t3_cq but keeps old cqid */
275 oldcq = chp->cq;
276 chp->cq = newcq;
277 chp->cq.cqid = oldcq.cqid;
278
279 /* resize new t3_cq to update the HW context */
280 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
281 if (ret) {
282 chp->cq = oldcq;
283 return ret;
284 }
285 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
286
287 /* destroy old t3_cq */
288 oldcq.cqid = newcq.cqid;
289 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
290 if (ret) {
291 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
292 __func__, ret);
293 }
294
295 /* add user hooks here */
296
297 /* resume qps */
298 ret = iwch_resume_qps(chp);
299 return ret;
300 #else
301 return -ENOSYS;
302 #endif
303 }
304
305 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
306 {
307 struct iwch_dev *rhp;
308 struct iwch_cq *chp;
309 enum t3_cq_opcode cq_op;
310 int err;
311 unsigned long flag;
312 u32 rptr;
313
314 chp = to_iwch_cq(ibcq);
315 rhp = chp->rhp;
316 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
317 cq_op = CQ_ARM_SE;
318 else
319 cq_op = CQ_ARM_AN;
320 if (chp->user_rptr_addr) {
321 if (get_user(rptr, chp->user_rptr_addr))
322 return -EFAULT;
323 spin_lock_irqsave(&chp->lock, flag);
324 chp->cq.rptr = rptr;
325 } else
326 spin_lock_irqsave(&chp->lock, flag);
327 PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
328 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
329 spin_unlock_irqrestore(&chp->lock, flag);
330 if (err < 0)
331 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
332 chp->cq.cqid);
333 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
334 err = 0;
335 return err;
336 }
337
338 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
339 {
340 int len = vma->vm_end - vma->vm_start;
341 u32 key = vma->vm_pgoff << PAGE_SHIFT;
342 struct cxio_rdev *rdev_p;
343 int ret = 0;
344 struct iwch_mm_entry *mm;
345 struct iwch_ucontext *ucontext;
346 u64 addr;
347
348 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
349 key, len);
350
351 if (vma->vm_start & (PAGE_SIZE-1)) {
352 return -EINVAL;
353 }
354
355 rdev_p = &(to_iwch_dev(context->device)->rdev);
356 ucontext = to_iwch_ucontext(context);
357
358 mm = remove_mmap(ucontext, key, len);
359 if (!mm)
360 return -EINVAL;
361 addr = mm->addr;
362 kfree(mm);
363
364 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
365 (addr < (rdev_p->rnic_info.udbell_physbase +
366 rdev_p->rnic_info.udbell_len))) {
367
368 /*
369 * Map T3 DB register.
370 */
371 if (vma->vm_flags & VM_READ) {
372 return -EPERM;
373 }
374
375 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
376 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
377 vma->vm_flags &= ~VM_MAYREAD;
378 ret = io_remap_pfn_range(vma, vma->vm_start,
379 addr >> PAGE_SHIFT,
380 len, vma->vm_page_prot);
381 } else {
382
383 /*
384 * Map WQ or CQ contig dma memory...
385 */
386 ret = remap_pfn_range(vma, vma->vm_start,
387 addr >> PAGE_SHIFT,
388 len, vma->vm_page_prot);
389 }
390
391 return ret;
392 }
393
394 static int iwch_deallocate_pd(struct ib_pd *pd)
395 {
396 struct iwch_dev *rhp;
397 struct iwch_pd *php;
398
399 php = to_iwch_pd(pd);
400 rhp = php->rhp;
401 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
402 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
403 kfree(php);
404 return 0;
405 }
406
407 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
408 struct ib_ucontext *context,
409 struct ib_udata *udata)
410 {
411 struct iwch_pd *php;
412 u32 pdid;
413 struct iwch_dev *rhp;
414
415 PDBG("%s ibdev %p\n", __func__, ibdev);
416 rhp = (struct iwch_dev *) ibdev;
417 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
418 if (!pdid)
419 return ERR_PTR(-EINVAL);
420 php = kzalloc(sizeof(*php), GFP_KERNEL);
421 if (!php) {
422 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
423 return ERR_PTR(-ENOMEM);
424 }
425 php->pdid = pdid;
426 php->rhp = rhp;
427 if (context) {
428 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
429 iwch_deallocate_pd(&php->ibpd);
430 return ERR_PTR(-EFAULT);
431 }
432 }
433 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
434 return &php->ibpd;
435 }
436
437 static int iwch_dereg_mr(struct ib_mr *ib_mr)
438 {
439 struct iwch_dev *rhp;
440 struct iwch_mr *mhp;
441 u32 mmid;
442
443 PDBG("%s ib_mr %p\n", __func__, ib_mr);
444 /* There can be no memory windows */
445 if (atomic_read(&ib_mr->usecnt))
446 return -EINVAL;
447
448 mhp = to_iwch_mr(ib_mr);
449 rhp = mhp->rhp;
450 mmid = mhp->attr.stag >> 8;
451 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
452 mhp->attr.pbl_addr);
453 iwch_free_pbl(mhp);
454 remove_handle(rhp, &rhp->mmidr, mmid);
455 if (mhp->kva)
456 kfree((void *) (unsigned long) mhp->kva);
457 if (mhp->umem)
458 ib_umem_release(mhp->umem);
459 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
460 kfree(mhp);
461 return 0;
462 }
463
464 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
465 struct ib_phys_buf *buffer_list,
466 int num_phys_buf,
467 int acc,
468 u64 *iova_start)
469 {
470 __be64 *page_list;
471 int shift;
472 u64 total_size;
473 int npages;
474 struct iwch_dev *rhp;
475 struct iwch_pd *php;
476 struct iwch_mr *mhp;
477 int ret;
478
479 PDBG("%s ib_pd %p\n", __func__, pd);
480 php = to_iwch_pd(pd);
481 rhp = php->rhp;
482
483 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
484 if (!mhp)
485 return ERR_PTR(-ENOMEM);
486
487 mhp->rhp = rhp;
488
489 /* First check that we have enough alignment */
490 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
491 ret = -EINVAL;
492 goto err;
493 }
494
495 if (num_phys_buf > 1 &&
496 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
497 ret = -EINVAL;
498 goto err;
499 }
500
501 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
502 &total_size, &npages, &shift, &page_list);
503 if (ret)
504 goto err;
505
506 ret = iwch_alloc_pbl(mhp, npages);
507 if (ret) {
508 kfree(page_list);
509 goto err_pbl;
510 }
511
512 ret = iwch_write_pbl(mhp, page_list, npages, 0);
513 kfree(page_list);
514 if (ret)
515 goto err_pbl;
516
517 mhp->attr.pdid = php->pdid;
518 mhp->attr.zbva = 0;
519
520 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
521 mhp->attr.va_fbo = *iova_start;
522 mhp->attr.page_size = shift - 12;
523
524 mhp->attr.len = (u32) total_size;
525 mhp->attr.pbl_size = npages;
526 ret = iwch_register_mem(rhp, php, mhp, shift);
527 if (ret)
528 goto err_pbl;
529
530 return &mhp->ibmr;
531
532 err_pbl:
533 iwch_free_pbl(mhp);
534
535 err:
536 kfree(mhp);
537 return ERR_PTR(ret);
538
539 }
540
541 static int iwch_reregister_phys_mem(struct ib_mr *mr,
542 int mr_rereg_mask,
543 struct ib_pd *pd,
544 struct ib_phys_buf *buffer_list,
545 int num_phys_buf,
546 int acc, u64 * iova_start)
547 {
548
549 struct iwch_mr mh, *mhp;
550 struct iwch_pd *php;
551 struct iwch_dev *rhp;
552 __be64 *page_list = NULL;
553 int shift = 0;
554 u64 total_size;
555 int npages;
556 int ret;
557
558 PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
559
560 /* There can be no memory windows */
561 if (atomic_read(&mr->usecnt))
562 return -EINVAL;
563
564 mhp = to_iwch_mr(mr);
565 rhp = mhp->rhp;
566 php = to_iwch_pd(mr->pd);
567
568 /* make sure we are on the same adapter */
569 if (rhp != php->rhp)
570 return -EINVAL;
571
572 memcpy(&mh, mhp, sizeof *mhp);
573
574 if (mr_rereg_mask & IB_MR_REREG_PD)
575 php = to_iwch_pd(pd);
576 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
577 mh.attr.perms = iwch_ib_to_tpt_access(acc);
578 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
579 ret = build_phys_page_list(buffer_list, num_phys_buf,
580 iova_start,
581 &total_size, &npages,
582 &shift, &page_list);
583 if (ret)
584 return ret;
585 }
586
587 ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
588 kfree(page_list);
589 if (ret) {
590 return ret;
591 }
592 if (mr_rereg_mask & IB_MR_REREG_PD)
593 mhp->attr.pdid = php->pdid;
594 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
595 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
596 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
597 mhp->attr.zbva = 0;
598 mhp->attr.va_fbo = *iova_start;
599 mhp->attr.page_size = shift - 12;
600 mhp->attr.len = (u32) total_size;
601 mhp->attr.pbl_size = npages;
602 }
603
604 return 0;
605 }
606
607
608 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
609 u64 virt, int acc, struct ib_udata *udata)
610 {
611 __be64 *pages;
612 int shift, n, len;
613 int i, j, k;
614 int err = 0;
615 struct ib_umem_chunk *chunk;
616 struct iwch_dev *rhp;
617 struct iwch_pd *php;
618 struct iwch_mr *mhp;
619 struct iwch_reg_user_mr_resp uresp;
620
621 PDBG("%s ib_pd %p\n", __func__, pd);
622
623 php = to_iwch_pd(pd);
624 rhp = php->rhp;
625 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
626 if (!mhp)
627 return ERR_PTR(-ENOMEM);
628
629 mhp->rhp = rhp;
630
631 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
632 if (IS_ERR(mhp->umem)) {
633 err = PTR_ERR(mhp->umem);
634 kfree(mhp);
635 return ERR_PTR(err);
636 }
637
638 shift = ffs(mhp->umem->page_size) - 1;
639
640 n = 0;
641 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
642 n += chunk->nents;
643
644 err = iwch_alloc_pbl(mhp, n);
645 if (err)
646 goto err;
647
648 pages = (__be64 *) __get_free_page(GFP_KERNEL);
649 if (!pages) {
650 err = -ENOMEM;
651 goto err_pbl;
652 }
653
654 i = n = 0;
655
656 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
657 for (j = 0; j < chunk->nmap; ++j) {
658 len = sg_dma_len(&chunk->page_list[j]) >> shift;
659 for (k = 0; k < len; ++k) {
660 pages[i++] = cpu_to_be64(sg_dma_address(
661 &chunk->page_list[j]) +
662 mhp->umem->page_size * k);
663 if (i == PAGE_SIZE / sizeof *pages) {
664 err = iwch_write_pbl(mhp, pages, i, n);
665 if (err)
666 goto pbl_done;
667 n += i;
668 i = 0;
669 }
670 }
671 }
672
673 if (i)
674 err = iwch_write_pbl(mhp, pages, i, n);
675
676 pbl_done:
677 free_page((unsigned long) pages);
678 if (err)
679 goto err_pbl;
680
681 mhp->attr.pdid = php->pdid;
682 mhp->attr.zbva = 0;
683 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
684 mhp->attr.va_fbo = virt;
685 mhp->attr.page_size = shift - 12;
686 mhp->attr.len = (u32) length;
687
688 err = iwch_register_mem(rhp, php, mhp, shift);
689 if (err)
690 goto err_pbl;
691
692 if (udata && !t3a_device(rhp)) {
693 uresp.pbl_addr = (mhp->attr.pbl_addr -
694 rhp->rdev.rnic_info.pbl_base) >> 3;
695 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
696 uresp.pbl_addr);
697
698 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
699 iwch_dereg_mr(&mhp->ibmr);
700 err = -EFAULT;
701 goto err;
702 }
703 }
704
705 return &mhp->ibmr;
706
707 err_pbl:
708 iwch_free_pbl(mhp);
709
710 err:
711 ib_umem_release(mhp->umem);
712 kfree(mhp);
713 return ERR_PTR(err);
714 }
715
716 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
717 {
718 struct ib_phys_buf bl;
719 u64 kva;
720 struct ib_mr *ibmr;
721
722 PDBG("%s ib_pd %p\n", __func__, pd);
723
724 /*
725 * T3 only supports 32 bits of size.
726 */
727 bl.size = 0xffffffff;
728 bl.addr = 0;
729 kva = 0;
730 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
731 return ibmr;
732 }
733
734 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
735 {
736 struct iwch_dev *rhp;
737 struct iwch_pd *php;
738 struct iwch_mw *mhp;
739 u32 mmid;
740 u32 stag = 0;
741 int ret;
742
743 php = to_iwch_pd(pd);
744 rhp = php->rhp;
745 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
746 if (!mhp)
747 return ERR_PTR(-ENOMEM);
748 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
749 if (ret) {
750 kfree(mhp);
751 return ERR_PTR(ret);
752 }
753 mhp->rhp = rhp;
754 mhp->attr.pdid = php->pdid;
755 mhp->attr.type = TPT_MW;
756 mhp->attr.stag = stag;
757 mmid = (stag) >> 8;
758 mhp->ibmw.rkey = stag;
759 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
760 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
761 kfree(mhp);
762 return ERR_PTR(-ENOMEM);
763 }
764 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
765 return &(mhp->ibmw);
766 }
767
768 static int iwch_dealloc_mw(struct ib_mw *mw)
769 {
770 struct iwch_dev *rhp;
771 struct iwch_mw *mhp;
772 u32 mmid;
773
774 mhp = to_iwch_mw(mw);
775 rhp = mhp->rhp;
776 mmid = (mw->rkey) >> 8;
777 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
778 remove_handle(rhp, &rhp->mmidr, mmid);
779 kfree(mhp);
780 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
781 return 0;
782 }
783
784 static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
785 {
786 struct iwch_dev *rhp;
787 struct iwch_pd *php;
788 struct iwch_mr *mhp;
789 u32 mmid;
790 u32 stag = 0;
791 int ret = 0;
792
793 php = to_iwch_pd(pd);
794 rhp = php->rhp;
795 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
796 if (!mhp)
797 goto err;
798
799 mhp->rhp = rhp;
800 ret = iwch_alloc_pbl(mhp, pbl_depth);
801 if (ret)
802 goto err1;
803 mhp->attr.pbl_size = pbl_depth;
804 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
805 mhp->attr.pbl_size, mhp->attr.pbl_addr);
806 if (ret)
807 goto err2;
808 mhp->attr.pdid = php->pdid;
809 mhp->attr.type = TPT_NON_SHARED_MR;
810 mhp->attr.stag = stag;
811 mhp->attr.state = 1;
812 mmid = (stag) >> 8;
813 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
814 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
815 goto err3;
816
817 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
818 return &(mhp->ibmr);
819 err3:
820 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
821 mhp->attr.pbl_addr);
822 err2:
823 iwch_free_pbl(mhp);
824 err1:
825 kfree(mhp);
826 err:
827 return ERR_PTR(ret);
828 }
829
830 static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
831 struct ib_device *device,
832 int page_list_len)
833 {
834 struct ib_fast_reg_page_list *page_list;
835
836 page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
837 GFP_KERNEL);
838 if (!page_list)
839 return ERR_PTR(-ENOMEM);
840
841 page_list->page_list = (u64 *)(page_list + 1);
842 page_list->max_page_list_len = page_list_len;
843
844 return page_list;
845 }
846
847 static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
848 {
849 kfree(page_list);
850 }
851
852 static int iwch_destroy_qp(struct ib_qp *ib_qp)
853 {
854 struct iwch_dev *rhp;
855 struct iwch_qp *qhp;
856 struct iwch_qp_attributes attrs;
857 struct iwch_ucontext *ucontext;
858
859 qhp = to_iwch_qp(ib_qp);
860 rhp = qhp->rhp;
861
862 attrs.next_state = IWCH_QP_STATE_ERROR;
863 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
864 wait_event(qhp->wait, !qhp->ep);
865
866 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
867
868 atomic_dec(&qhp->refcnt);
869 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
870
871 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
872 : NULL;
873 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
874 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
875
876 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
877 ib_qp, qhp->wq.qpid, qhp);
878 kfree(qhp);
879 return 0;
880 }
881
882 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
883 struct ib_qp_init_attr *attrs,
884 struct ib_udata *udata)
885 {
886 struct iwch_dev *rhp;
887 struct iwch_qp *qhp;
888 struct iwch_pd *php;
889 struct iwch_cq *schp;
890 struct iwch_cq *rchp;
891 struct iwch_create_qp_resp uresp;
892 int wqsize, sqsize, rqsize;
893 struct iwch_ucontext *ucontext;
894
895 PDBG("%s ib_pd %p\n", __func__, pd);
896 if (attrs->qp_type != IB_QPT_RC)
897 return ERR_PTR(-EINVAL);
898 php = to_iwch_pd(pd);
899 rhp = php->rhp;
900 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
901 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
902 if (!schp || !rchp)
903 return ERR_PTR(-EINVAL);
904
905 /* The RQT size must be # of entries + 1 rounded up to a power of two */
906 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
907 if (rqsize == attrs->cap.max_recv_wr)
908 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
909
910 /* T3 doesn't support RQT depth < 16 */
911 if (rqsize < 16)
912 rqsize = 16;
913
914 if (rqsize > T3_MAX_RQ_SIZE)
915 return ERR_PTR(-EINVAL);
916
917 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
918 return ERR_PTR(-EINVAL);
919
920 /*
921 * NOTE: The SQ and total WQ sizes don't need to be
922 * a power of two. However, all the code assumes
923 * they are. EG: Q_FREECNT() and friends.
924 */
925 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
926 wqsize = roundup_pow_of_two(rqsize + sqsize);
927
928 /*
929 * Kernel users need more wq space for fastreg WRs which can take
930 * 2 WR fragments.
931 */
932 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
933 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
934 wqsize = roundup_pow_of_two(rqsize +
935 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
936 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
937 wqsize, sqsize, rqsize);
938 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
939 if (!qhp)
940 return ERR_PTR(-ENOMEM);
941 qhp->wq.size_log2 = ilog2(wqsize);
942 qhp->wq.rq_size_log2 = ilog2(rqsize);
943 qhp->wq.sq_size_log2 = ilog2(sqsize);
944 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
945 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
946 kfree(qhp);
947 return ERR_PTR(-ENOMEM);
948 }
949
950 attrs->cap.max_recv_wr = rqsize - 1;
951 attrs->cap.max_send_wr = sqsize;
952 attrs->cap.max_inline_data = T3_MAX_INLINE;
953
954 qhp->rhp = rhp;
955 qhp->attr.pd = php->pdid;
956 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
957 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
958 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
959 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
960 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
961 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
962 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
963 qhp->attr.state = IWCH_QP_STATE_IDLE;
964 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
965
966 /*
967 * XXX - These don't get passed in from the openib user
968 * at create time. The CM sets them via a QP modify.
969 * Need to fix... I think the CM should
970 */
971 qhp->attr.enable_rdma_read = 1;
972 qhp->attr.enable_rdma_write = 1;
973 qhp->attr.enable_bind = 1;
974 qhp->attr.max_ord = 1;
975 qhp->attr.max_ird = 1;
976
977 spin_lock_init(&qhp->lock);
978 init_waitqueue_head(&qhp->wait);
979 atomic_set(&qhp->refcnt, 1);
980
981 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
982 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
983 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
984 kfree(qhp);
985 return ERR_PTR(-ENOMEM);
986 }
987
988 if (udata) {
989
990 struct iwch_mm_entry *mm1, *mm2;
991
992 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
993 if (!mm1) {
994 iwch_destroy_qp(&qhp->ibqp);
995 return ERR_PTR(-ENOMEM);
996 }
997
998 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
999 if (!mm2) {
1000 kfree(mm1);
1001 iwch_destroy_qp(&qhp->ibqp);
1002 return ERR_PTR(-ENOMEM);
1003 }
1004
1005 uresp.qpid = qhp->wq.qpid;
1006 uresp.size_log2 = qhp->wq.size_log2;
1007 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
1008 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
1009 spin_lock(&ucontext->mmap_lock);
1010 uresp.key = ucontext->key;
1011 ucontext->key += PAGE_SIZE;
1012 uresp.db_key = ucontext->key;
1013 ucontext->key += PAGE_SIZE;
1014 spin_unlock(&ucontext->mmap_lock);
1015 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
1016 kfree(mm1);
1017 kfree(mm2);
1018 iwch_destroy_qp(&qhp->ibqp);
1019 return ERR_PTR(-EFAULT);
1020 }
1021 mm1->key = uresp.key;
1022 mm1->addr = virt_to_phys(qhp->wq.queue);
1023 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1024 insert_mmap(ucontext, mm1);
1025 mm2->key = uresp.db_key;
1026 mm2->addr = qhp->wq.udb & PAGE_MASK;
1027 mm2->len = PAGE_SIZE;
1028 insert_mmap(ucontext, mm2);
1029 }
1030 qhp->ibqp.qp_num = qhp->wq.qpid;
1031 init_timer(&(qhp->timer));
1032 PDBG("%s sq_num_entries %d, rq_num_entries %d "
1033 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
1034 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
1035 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
1036 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
1037 return &qhp->ibqp;
1038 }
1039
1040 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1041 int attr_mask, struct ib_udata *udata)
1042 {
1043 struct iwch_dev *rhp;
1044 struct iwch_qp *qhp;
1045 enum iwch_qp_attr_mask mask = 0;
1046 struct iwch_qp_attributes attrs;
1047
1048 PDBG("%s ib_qp %p\n", __func__, ibqp);
1049
1050 /* iwarp does not support the RTR state */
1051 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1052 attr_mask &= ~IB_QP_STATE;
1053
1054 /* Make sure we still have something left to do */
1055 if (!attr_mask)
1056 return 0;
1057
1058 memset(&attrs, 0, sizeof attrs);
1059 qhp = to_iwch_qp(ibqp);
1060 rhp = qhp->rhp;
1061
1062 attrs.next_state = iwch_convert_state(attr->qp_state);
1063 attrs.enable_rdma_read = (attr->qp_access_flags &
1064 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1065 attrs.enable_rdma_write = (attr->qp_access_flags &
1066 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1067 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1068
1069
1070 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1071 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1072 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1073 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1074 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1075
1076 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1077 }
1078
1079 void iwch_qp_add_ref(struct ib_qp *qp)
1080 {
1081 PDBG("%s ib_qp %p\n", __func__, qp);
1082 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1083 }
1084
1085 void iwch_qp_rem_ref(struct ib_qp *qp)
1086 {
1087 PDBG("%s ib_qp %p\n", __func__, qp);
1088 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1089 wake_up(&(to_iwch_qp(qp)->wait));
1090 }
1091
1092 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1093 {
1094 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1095 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1096 }
1097
1098
1099 static int iwch_query_pkey(struct ib_device *ibdev,
1100 u8 port, u16 index, u16 * pkey)
1101 {
1102 PDBG("%s ibdev %p\n", __func__, ibdev);
1103 *pkey = 0;
1104 return 0;
1105 }
1106
1107 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1108 int index, union ib_gid *gid)
1109 {
1110 struct iwch_dev *dev;
1111
1112 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
1113 __func__, ibdev, port, index, gid);
1114 dev = to_iwch_dev(ibdev);
1115 BUG_ON(port == 0 || port > 2);
1116 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1117 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1118 return 0;
1119 }
1120
1121 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1122 {
1123 struct ethtool_drvinfo info;
1124 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1125 char *cp, *next;
1126 unsigned fw_maj, fw_min, fw_mic;
1127
1128 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1129
1130 next = info.fw_version + 1;
1131 cp = strsep(&next, ".");
1132 sscanf(cp, "%i", &fw_maj);
1133 cp = strsep(&next, ".");
1134 sscanf(cp, "%i", &fw_min);
1135 cp = strsep(&next, ".");
1136 sscanf(cp, "%i", &fw_mic);
1137
1138 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1139 (fw_mic & 0xffff);
1140 }
1141
1142 static int iwch_query_device(struct ib_device *ibdev,
1143 struct ib_device_attr *props)
1144 {
1145
1146 struct iwch_dev *dev;
1147 PDBG("%s ibdev %p\n", __func__, ibdev);
1148
1149 dev = to_iwch_dev(ibdev);
1150 memset(props, 0, sizeof *props);
1151 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1152 props->hw_ver = dev->rdev.t3cdev_p->type;
1153 props->fw_ver = fw_vers_string_to_u64(dev);
1154 props->device_cap_flags = dev->device_cap_flags;
1155 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1156 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1157 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1158 props->max_mr_size = dev->attr.max_mr_size;
1159 props->max_qp = dev->attr.max_qps;
1160 props->max_qp_wr = dev->attr.max_wrs;
1161 props->max_sge = dev->attr.max_sge_per_wr;
1162 props->max_sge_rd = 1;
1163 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1164 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1165 props->max_cq = dev->attr.max_cqs;
1166 props->max_cqe = dev->attr.max_cqes_per_cq;
1167 props->max_mr = dev->attr.max_mem_regs;
1168 props->max_pd = dev->attr.max_pds;
1169 props->local_ca_ack_delay = 0;
1170 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1171
1172 return 0;
1173 }
1174
1175 static int iwch_query_port(struct ib_device *ibdev,
1176 u8 port, struct ib_port_attr *props)
1177 {
1178 struct iwch_dev *dev;
1179 struct net_device *netdev;
1180 struct in_device *inetdev;
1181
1182 PDBG("%s ibdev %p\n", __func__, ibdev);
1183
1184 dev = to_iwch_dev(ibdev);
1185 netdev = dev->rdev.port_info.lldevs[port-1];
1186
1187 memset(props, 0, sizeof(struct ib_port_attr));
1188 props->max_mtu = IB_MTU_4096;
1189 if (netdev->mtu >= 4096)
1190 props->active_mtu = IB_MTU_4096;
1191 else if (netdev->mtu >= 2048)
1192 props->active_mtu = IB_MTU_2048;
1193 else if (netdev->mtu >= 1024)
1194 props->active_mtu = IB_MTU_1024;
1195 else if (netdev->mtu >= 512)
1196 props->active_mtu = IB_MTU_512;
1197 else
1198 props->active_mtu = IB_MTU_256;
1199
1200 if (!netif_carrier_ok(netdev))
1201 props->state = IB_PORT_DOWN;
1202 else {
1203 inetdev = in_dev_get(netdev);
1204 if (inetdev) {
1205 if (inetdev->ifa_list)
1206 props->state = IB_PORT_ACTIVE;
1207 else
1208 props->state = IB_PORT_INIT;
1209 in_dev_put(inetdev);
1210 } else
1211 props->state = IB_PORT_INIT;
1212 }
1213
1214 props->port_cap_flags =
1215 IB_PORT_CM_SUP |
1216 IB_PORT_SNMP_TUNNEL_SUP |
1217 IB_PORT_REINIT_SUP |
1218 IB_PORT_DEVICE_MGMT_SUP |
1219 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1220 props->gid_tbl_len = 1;
1221 props->pkey_tbl_len = 1;
1222 props->active_width = 2;
1223 props->active_speed = 2;
1224 props->max_msg_sz = -1;
1225
1226 return 0;
1227 }
1228
1229 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1230 char *buf)
1231 {
1232 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1233 ibdev.dev);
1234 PDBG("%s dev 0x%p\n", __func__, dev);
1235 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1236 }
1237
1238 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
1239 {
1240 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1241 ibdev.dev);
1242 struct ethtool_drvinfo info;
1243 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1244
1245 PDBG("%s dev 0x%p\n", __func__, dev);
1246 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1247 return sprintf(buf, "%s\n", info.fw_version);
1248 }
1249
1250 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1251 char *buf)
1252 {
1253 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1254 ibdev.dev);
1255 struct ethtool_drvinfo info;
1256 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1257
1258 PDBG("%s dev 0x%p\n", __func__, dev);
1259 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1260 return sprintf(buf, "%s\n", info.driver);
1261 }
1262
1263 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1264 char *buf)
1265 {
1266 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1267 ibdev.dev);
1268 PDBG("%s dev 0x%p\n", __func__, dev);
1269 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1270 iwch_dev->rdev.rnic_info.pdev->device);
1271 }
1272
1273 static int iwch_get_mib(struct ib_device *ibdev,
1274 union rdma_protocol_stats *stats)
1275 {
1276 struct iwch_dev *dev;
1277 struct tp_mib_stats m;
1278 int ret;
1279
1280 PDBG("%s ibdev %p\n", __func__, ibdev);
1281 dev = to_iwch_dev(ibdev);
1282 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1283 if (ret)
1284 return -ENOSYS;
1285
1286 memset(stats, 0, sizeof *stats);
1287 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1288 m.ipInReceive_lo;
1289 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1290 m.ipInHdrErrors_lo;
1291 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1292 m.ipInAddrErrors_lo;
1293 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1294 m.ipInUnknownProtos_lo;
1295 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1296 m.ipInDiscards_lo;
1297 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1298 m.ipInDelivers_lo;
1299 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1300 m.ipOutRequests_lo;
1301 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1302 m.ipOutDiscards_lo;
1303 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1304 m.ipOutNoRoutes_lo;
1305 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1306 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1307 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1308 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1309 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1310 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1311 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1312 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1313 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1314 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1315 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1316 m.tcpInSegs_lo;
1317 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1318 m.tcpOutSegs_lo;
1319 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1320 m.tcpRetransSeg_lo;
1321 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1322 m.tcpInErrs_lo;
1323 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1324 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1325 return 0;
1326 }
1327
1328 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1329 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1330 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1331 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1332
1333 static struct device_attribute *iwch_class_attributes[] = {
1334 &dev_attr_hw_rev,
1335 &dev_attr_fw_ver,
1336 &dev_attr_hca_type,
1337 &dev_attr_board_id,
1338 };
1339
1340 int iwch_register_device(struct iwch_dev *dev)
1341 {
1342 int ret;
1343 int i;
1344
1345 PDBG("%s iwch_dev %p\n", __func__, dev);
1346 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1347 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1348 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1349 dev->ibdev.owner = THIS_MODULE;
1350 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1351 IB_DEVICE_MEM_WINDOW |
1352 IB_DEVICE_MEM_MGT_EXTENSIONS;
1353
1354 /* cxgb3 supports STag 0. */
1355 dev->ibdev.local_dma_lkey = 0;
1356
1357 dev->ibdev.uverbs_cmd_mask =
1358 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1359 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1360 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1361 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1362 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1363 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1364 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1365 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1366 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1367 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1368 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1369 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1370 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1371 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1372 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1373 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1374 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1375 dev->ibdev.node_type = RDMA_NODE_RNIC;
1376 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1377 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1378 dev->ibdev.num_comp_vectors = 1;
1379 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1380 dev->ibdev.query_device = iwch_query_device;
1381 dev->ibdev.query_port = iwch_query_port;
1382 dev->ibdev.modify_port = iwch_modify_port;
1383 dev->ibdev.query_pkey = iwch_query_pkey;
1384 dev->ibdev.query_gid = iwch_query_gid;
1385 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1386 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1387 dev->ibdev.mmap = iwch_mmap;
1388 dev->ibdev.alloc_pd = iwch_allocate_pd;
1389 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1390 dev->ibdev.create_ah = iwch_ah_create;
1391 dev->ibdev.destroy_ah = iwch_ah_destroy;
1392 dev->ibdev.create_qp = iwch_create_qp;
1393 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1394 dev->ibdev.destroy_qp = iwch_destroy_qp;
1395 dev->ibdev.create_cq = iwch_create_cq;
1396 dev->ibdev.destroy_cq = iwch_destroy_cq;
1397 dev->ibdev.resize_cq = iwch_resize_cq;
1398 dev->ibdev.poll_cq = iwch_poll_cq;
1399 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1400 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1401 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1402 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1403 dev->ibdev.dereg_mr = iwch_dereg_mr;
1404 dev->ibdev.alloc_mw = iwch_alloc_mw;
1405 dev->ibdev.bind_mw = iwch_bind_mw;
1406 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1407 dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
1408 dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1409 dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
1410 dev->ibdev.attach_mcast = iwch_multicast_attach;
1411 dev->ibdev.detach_mcast = iwch_multicast_detach;
1412 dev->ibdev.process_mad = iwch_process_mad;
1413 dev->ibdev.req_notify_cq = iwch_arm_cq;
1414 dev->ibdev.post_send = iwch_post_send;
1415 dev->ibdev.post_recv = iwch_post_receive;
1416 dev->ibdev.get_protocol_stats = iwch_get_mib;
1417
1418 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1419 if (!dev->ibdev.iwcm)
1420 return -ENOMEM;
1421
1422 dev->ibdev.iwcm->connect = iwch_connect;
1423 dev->ibdev.iwcm->accept = iwch_accept_cr;
1424 dev->ibdev.iwcm->reject = iwch_reject_cr;
1425 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1426 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1427 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1428 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1429 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1430
1431 ret = ib_register_device(&dev->ibdev);
1432 if (ret)
1433 goto bail1;
1434
1435 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1436 ret = device_create_file(&dev->ibdev.dev,
1437 iwch_class_attributes[i]);
1438 if (ret) {
1439 goto bail2;
1440 }
1441 }
1442 return 0;
1443 bail2:
1444 ib_unregister_device(&dev->ibdev);
1445 bail1:
1446 kfree(dev->ibdev.iwcm);
1447 return ret;
1448 }
1449
1450 void iwch_unregister_device(struct iwch_dev *dev)
1451 {
1452 int i;
1453
1454 PDBG("%s iwch_dev %p\n", __func__, dev);
1455 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1456 device_remove_file(&dev->ibdev.dev,
1457 iwch_class_attributes[i]);
1458 ib_unregister_device(&dev->ibdev);
1459 kfree(dev->ibdev.iwcm);
1460 return;
1461 }
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