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Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev
[linux/fpc-iii.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
blob6895523779d0d5ebb9d5eeb4f58e9d5ca42a1c0c
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/spinlock.h>
41 #include <linux/ethtool.h>
42 #include <linux/rtnetlink.h>
43 #include <linux/inetdevice.h>
44
45 #include <asm/io.h>
46 #include <asm/irq.h>
47 #include <asm/byteorder.h>
48
49 #include <rdma/iw_cm.h>
50 #include <rdma/ib_verbs.h>
51 #include <rdma/ib_smi.h>
52 #include <rdma/ib_umem.h>
53 #include <rdma/ib_user_verbs.h>
54
55 #include "cxio_hal.h"
56 #include "iwch.h"
57 #include "iwch_provider.h"
58 #include "iwch_cm.h"
59 #include "iwch_user.h"
60 #include "common.h"
61
62 static int iwch_modify_port(struct ib_device *ibdev,
63 u8 port, int port_modify_mask,
64 struct ib_port_modify *props)
65 {
66 return -ENOSYS;
67 }
68
69 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
70 struct ib_ah_attr *ah_attr)
71 {
72 return ERR_PTR(-ENOSYS);
73 }
74
75 static int iwch_ah_destroy(struct ib_ah *ah)
76 {
77 return -ENOSYS;
78 }
79
80 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
81 {
82 return -ENOSYS;
83 }
84
85 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
86 {
87 return -ENOSYS;
88 }
89
90 static int iwch_process_mad(struct ib_device *ibdev,
91 int mad_flags,
92 u8 port_num,
93 struct ib_wc *in_wc,
94 struct ib_grh *in_grh,
95 struct ib_mad *in_mad, struct ib_mad *out_mad)
96 {
97 return -ENOSYS;
98 }
99
100 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
101 {
102 struct iwch_dev *rhp = to_iwch_dev(context->device);
103 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
104 struct iwch_mm_entry *mm, *tmp;
105
106 PDBG("%s context %p\n", __func__, context);
107 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
108 kfree(mm);
109 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
110 kfree(ucontext);
111 return 0;
112 }
113
114 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
115 struct ib_udata *udata)
116 {
117 struct iwch_ucontext *context;
118 struct iwch_dev *rhp = to_iwch_dev(ibdev);
119
120 PDBG("%s ibdev %p\n", __func__, ibdev);
121 context = kzalloc(sizeof(*context), GFP_KERNEL);
122 if (!context)
123 return ERR_PTR(-ENOMEM);
124 cxio_init_ucontext(&rhp->rdev, &context->uctx);
125 INIT_LIST_HEAD(&context->mmaps);
126 spin_lock_init(&context->mmap_lock);
127 return &context->ibucontext;
128 }
129
130 static int iwch_destroy_cq(struct ib_cq *ib_cq)
131 {
132 struct iwch_cq *chp;
133
134 PDBG("%s ib_cq %p\n", __func__, ib_cq);
135 chp = to_iwch_cq(ib_cq);
136
137 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
138 atomic_dec(&chp->refcnt);
139 wait_event(chp->wait, !atomic_read(&chp->refcnt));
140
141 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
142 kfree(chp);
143 return 0;
144 }
145
146 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
147 struct ib_ucontext *ib_context,
148 struct ib_udata *udata)
149 {
150 struct iwch_dev *rhp;
151 struct iwch_cq *chp;
152 struct iwch_create_cq_resp uresp;
153 struct iwch_create_cq_req ureq;
154 struct iwch_ucontext *ucontext = NULL;
155
156 PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
157 rhp = to_iwch_dev(ibdev);
158 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
159 if (!chp)
160 return ERR_PTR(-ENOMEM);
161
162 if (ib_context) {
163 ucontext = to_iwch_ucontext(ib_context);
164 if (!t3a_device(rhp)) {
165 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
166 kfree(chp);
167 return ERR_PTR(-EFAULT);
168 }
169 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
170 }
171 }
172
173 if (t3a_device(rhp)) {
174
175 /*
176 * T3A: Add some fluff to handle extra CQEs inserted
177 * for various errors.
178 * Additional CQE possibilities:
179 * TERMINATE,
180 * incoming RDMA WRITE Failures
181 * incoming RDMA READ REQUEST FAILUREs
182 * NOTE: We cannot ensure the CQ won't overflow.
183 */
184 entries += 16;
185 }
186 entries = roundup_pow_of_two(entries);
187 chp->cq.size_log2 = ilog2(entries);
188
189 if (cxio_create_cq(&rhp->rdev, &chp->cq)) {
190 kfree(chp);
191 return ERR_PTR(-ENOMEM);
192 }
193 chp->rhp = rhp;
194 chp->ibcq.cqe = 1 << chp->cq.size_log2;
195 spin_lock_init(&chp->lock);
196 atomic_set(&chp->refcnt, 1);
197 init_waitqueue_head(&chp->wait);
198 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
199 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
200 kfree(chp);
201 return ERR_PTR(-ENOMEM);
202 }
203
204 if (ucontext) {
205 struct iwch_mm_entry *mm;
206
207 mm = kmalloc(sizeof *mm, GFP_KERNEL);
208 if (!mm) {
209 iwch_destroy_cq(&chp->ibcq);
210 return ERR_PTR(-ENOMEM);
211 }
212 uresp.cqid = chp->cq.cqid;
213 uresp.size_log2 = chp->cq.size_log2;
214 spin_lock(&ucontext->mmap_lock);
215 uresp.key = ucontext->key;
216 ucontext->key += PAGE_SIZE;
217 spin_unlock(&ucontext->mmap_lock);
218 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
219 kfree(mm);
220 iwch_destroy_cq(&chp->ibcq);
221 return ERR_PTR(-EFAULT);
222 }
223 mm->key = uresp.key;
224 mm->addr = virt_to_phys(chp->cq.queue);
225 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
226 sizeof (struct t3_cqe));
227 insert_mmap(ucontext, mm);
228 }
229 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
230 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
231 (unsigned long long) chp->cq.dma_addr);
232 return &chp->ibcq;
233 }
234
235 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
236 {
237 #ifdef notyet
238 struct iwch_cq *chp = to_iwch_cq(cq);
239 struct t3_cq oldcq, newcq;
240 int ret;
241
242 PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
243
244 /* We don't downsize... */
245 if (cqe <= cq->cqe)
246 return 0;
247
248 /* create new t3_cq with new size */
249 cqe = roundup_pow_of_two(cqe+1);
250 newcq.size_log2 = ilog2(cqe);
251
252 /* Dont allow resize to less than the current wce count */
253 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
254 return -ENOMEM;
255 }
256
257 /* Quiesce all QPs using this CQ */
258 ret = iwch_quiesce_qps(chp);
259 if (ret) {
260 return ret;
261 }
262
263 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
264 if (ret) {
265 return ret;
266 }
267
268 /* copy CQEs */
269 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
270 sizeof(struct t3_cqe));
271
272 /* old iwch_qp gets new t3_cq but keeps old cqid */
273 oldcq = chp->cq;
274 chp->cq = newcq;
275 chp->cq.cqid = oldcq.cqid;
276
277 /* resize new t3_cq to update the HW context */
278 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
279 if (ret) {
280 chp->cq = oldcq;
281 return ret;
282 }
283 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
284
285 /* destroy old t3_cq */
286 oldcq.cqid = newcq.cqid;
287 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
288 if (ret) {
289 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
290 __func__, ret);
291 }
292
293 /* add user hooks here */
294
295 /* resume qps */
296 ret = iwch_resume_qps(chp);
297 return ret;
298 #else
299 return -ENOSYS;
300 #endif
301 }
302
303 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
304 {
305 struct iwch_dev *rhp;
306 struct iwch_cq *chp;
307 enum t3_cq_opcode cq_op;
308 int err;
309 unsigned long flag;
310 u32 rptr;
311
312 chp = to_iwch_cq(ibcq);
313 rhp = chp->rhp;
314 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
315 cq_op = CQ_ARM_SE;
316 else
317 cq_op = CQ_ARM_AN;
318 if (chp->user_rptr_addr) {
319 if (get_user(rptr, chp->user_rptr_addr))
320 return -EFAULT;
321 spin_lock_irqsave(&chp->lock, flag);
322 chp->cq.rptr = rptr;
323 } else
324 spin_lock_irqsave(&chp->lock, flag);
325 PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
326 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
327 spin_unlock_irqrestore(&chp->lock, flag);
328 if (err < 0)
329 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
330 chp->cq.cqid);
331 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
332 err = 0;
333 return err;
334 }
335
336 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
337 {
338 int len = vma->vm_end - vma->vm_start;
339 u32 key = vma->vm_pgoff << PAGE_SHIFT;
340 struct cxio_rdev *rdev_p;
341 int ret = 0;
342 struct iwch_mm_entry *mm;
343 struct iwch_ucontext *ucontext;
344 u64 addr;
345
346 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
347 key, len);
348
349 if (vma->vm_start & (PAGE_SIZE-1)) {
350 return -EINVAL;
351 }
352
353 rdev_p = &(to_iwch_dev(context->device)->rdev);
354 ucontext = to_iwch_ucontext(context);
355
356 mm = remove_mmap(ucontext, key, len);
357 if (!mm)
358 return -EINVAL;
359 addr = mm->addr;
360 kfree(mm);
361
362 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
363 (addr < (rdev_p->rnic_info.udbell_physbase +
364 rdev_p->rnic_info.udbell_len))) {
365
366 /*
367 * Map T3 DB register.
368 */
369 if (vma->vm_flags & VM_READ) {
370 return -EPERM;
371 }
372
373 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
374 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
375 vma->vm_flags &= ~VM_MAYREAD;
376 ret = io_remap_pfn_range(vma, vma->vm_start,
377 addr >> PAGE_SHIFT,
378 len, vma->vm_page_prot);
379 } else {
380
381 /*
382 * Map WQ or CQ contig dma memory...
383 */
384 ret = remap_pfn_range(vma, vma->vm_start,
385 addr >> PAGE_SHIFT,
386 len, vma->vm_page_prot);
387 }
388
389 return ret;
390 }
391
392 static int iwch_deallocate_pd(struct ib_pd *pd)
393 {
394 struct iwch_dev *rhp;
395 struct iwch_pd *php;
396
397 php = to_iwch_pd(pd);
398 rhp = php->rhp;
399 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
400 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
401 kfree(php);
402 return 0;
403 }
404
405 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
406 struct ib_ucontext *context,
407 struct ib_udata *udata)
408 {
409 struct iwch_pd *php;
410 u32 pdid;
411 struct iwch_dev *rhp;
412
413 PDBG("%s ibdev %p\n", __func__, ibdev);
414 rhp = (struct iwch_dev *) ibdev;
415 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
416 if (!pdid)
417 return ERR_PTR(-EINVAL);
418 php = kzalloc(sizeof(*php), GFP_KERNEL);
419 if (!php) {
420 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
421 return ERR_PTR(-ENOMEM);
422 }
423 php->pdid = pdid;
424 php->rhp = rhp;
425 if (context) {
426 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
427 iwch_deallocate_pd(&php->ibpd);
428 return ERR_PTR(-EFAULT);
429 }
430 }
431 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
432 return &php->ibpd;
433 }
434
435 static int iwch_dereg_mr(struct ib_mr *ib_mr)
436 {
437 struct iwch_dev *rhp;
438 struct iwch_mr *mhp;
439 u32 mmid;
440
441 PDBG("%s ib_mr %p\n", __func__, ib_mr);
442 /* There can be no memory windows */
443 if (atomic_read(&ib_mr->usecnt))
444 return -EINVAL;
445
446 mhp = to_iwch_mr(ib_mr);
447 rhp = mhp->rhp;
448 mmid = mhp->attr.stag >> 8;
449 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
450 mhp->attr.pbl_addr);
451 iwch_free_pbl(mhp);
452 remove_handle(rhp, &rhp->mmidr, mmid);
453 if (mhp->kva)
454 kfree((void *) (unsigned long) mhp->kva);
455 if (mhp->umem)
456 ib_umem_release(mhp->umem);
457 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
458 kfree(mhp);
459 return 0;
460 }
461
462 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
463 struct ib_phys_buf *buffer_list,
464 int num_phys_buf,
465 int acc,
466 u64 *iova_start)
467 {
468 __be64 *page_list;
469 int shift;
470 u64 total_size;
471 int npages;
472 struct iwch_dev *rhp;
473 struct iwch_pd *php;
474 struct iwch_mr *mhp;
475 int ret;
476
477 PDBG("%s ib_pd %p\n", __func__, pd);
478 php = to_iwch_pd(pd);
479 rhp = php->rhp;
480
481 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
482 if (!mhp)
483 return ERR_PTR(-ENOMEM);
484
485 mhp->rhp = rhp;
486
487 /* First check that we have enough alignment */
488 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
489 ret = -EINVAL;
490 goto err;
491 }
492
493 if (num_phys_buf > 1 &&
494 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
495 ret = -EINVAL;
496 goto err;
497 }
498
499 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
500 &total_size, &npages, &shift, &page_list);
501 if (ret)
502 goto err;
503
504 ret = iwch_alloc_pbl(mhp, npages);
505 if (ret) {
506 kfree(page_list);
507 goto err_pbl;
508 }
509
510 ret = iwch_write_pbl(mhp, page_list, npages, 0);
511 kfree(page_list);
512 if (ret)
513 goto err_pbl;
514
515 mhp->attr.pdid = php->pdid;
516 mhp->attr.zbva = 0;
517
518 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
519 mhp->attr.va_fbo = *iova_start;
520 mhp->attr.page_size = shift - 12;
521
522 mhp->attr.len = (u32) total_size;
523 mhp->attr.pbl_size = npages;
524 ret = iwch_register_mem(rhp, php, mhp, shift);
525 if (ret)
526 goto err_pbl;
527
528 return &mhp->ibmr;
529
530 err_pbl:
531 iwch_free_pbl(mhp);
532
533 err:
534 kfree(mhp);
535 return ERR_PTR(ret);
536
537 }
538
539 static int iwch_reregister_phys_mem(struct ib_mr *mr,
540 int mr_rereg_mask,
541 struct ib_pd *pd,
542 struct ib_phys_buf *buffer_list,
543 int num_phys_buf,
544 int acc, u64 * iova_start)
545 {
546
547 struct iwch_mr mh, *mhp;
548 struct iwch_pd *php;
549 struct iwch_dev *rhp;
550 __be64 *page_list = NULL;
551 int shift = 0;
552 u64 total_size;
553 int npages;
554 int ret;
555
556 PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
557
558 /* There can be no memory windows */
559 if (atomic_read(&mr->usecnt))
560 return -EINVAL;
561
562 mhp = to_iwch_mr(mr);
563 rhp = mhp->rhp;
564 php = to_iwch_pd(mr->pd);
565
566 /* make sure we are on the same adapter */
567 if (rhp != php->rhp)
568 return -EINVAL;
569
570 memcpy(&mh, mhp, sizeof *mhp);
571
572 if (mr_rereg_mask & IB_MR_REREG_PD)
573 php = to_iwch_pd(pd);
574 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
575 mh.attr.perms = iwch_ib_to_tpt_access(acc);
576 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
577 ret = build_phys_page_list(buffer_list, num_phys_buf,
578 iova_start,
579 &total_size, &npages,
580 &shift, &page_list);
581 if (ret)
582 return ret;
583 }
584
585 ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
586 kfree(page_list);
587 if (ret) {
588 return ret;
589 }
590 if (mr_rereg_mask & IB_MR_REREG_PD)
591 mhp->attr.pdid = php->pdid;
592 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
593 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
594 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
595 mhp->attr.zbva = 0;
596 mhp->attr.va_fbo = *iova_start;
597 mhp->attr.page_size = shift - 12;
598 mhp->attr.len = (u32) total_size;
599 mhp->attr.pbl_size = npages;
600 }
601
602 return 0;
603 }
604
605
606 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
607 u64 virt, int acc, struct ib_udata *udata)
608 {
609 __be64 *pages;
610 int shift, n, len;
611 int i, j, k;
612 int err = 0;
613 struct ib_umem_chunk *chunk;
614 struct iwch_dev *rhp;
615 struct iwch_pd *php;
616 struct iwch_mr *mhp;
617 struct iwch_reg_user_mr_resp uresp;
618
619 PDBG("%s ib_pd %p\n", __func__, pd);
620
621 php = to_iwch_pd(pd);
622 rhp = php->rhp;
623 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
624 if (!mhp)
625 return ERR_PTR(-ENOMEM);
626
627 mhp->rhp = rhp;
628
629 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
630 if (IS_ERR(mhp->umem)) {
631 err = PTR_ERR(mhp->umem);
632 kfree(mhp);
633 return ERR_PTR(err);
634 }
635
636 shift = ffs(mhp->umem->page_size) - 1;
637
638 n = 0;
639 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
640 n += chunk->nents;
641
642 err = iwch_alloc_pbl(mhp, n);
643 if (err)
644 goto err;
645
646 pages = (__be64 *) __get_free_page(GFP_KERNEL);
647 if (!pages) {
648 err = -ENOMEM;
649 goto err_pbl;
650 }
651
652 i = n = 0;
653
654 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
655 for (j = 0; j < chunk->nmap; ++j) {
656 len = sg_dma_len(&chunk->page_list[j]) >> shift;
657 for (k = 0; k < len; ++k) {
658 pages[i++] = cpu_to_be64(sg_dma_address(
659 &chunk->page_list[j]) +
660 mhp->umem->page_size * k);
661 if (i == PAGE_SIZE / sizeof *pages) {
662 err = iwch_write_pbl(mhp, pages, i, n);
663 if (err)
664 goto pbl_done;
665 n += i;
666 i = 0;
667 }
668 }
669 }
670
671 if (i)
672 err = iwch_write_pbl(mhp, pages, i, n);
673
674 pbl_done:
675 free_page((unsigned long) pages);
676 if (err)
677 goto err_pbl;
678
679 mhp->attr.pdid = php->pdid;
680 mhp->attr.zbva = 0;
681 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
682 mhp->attr.va_fbo = virt;
683 mhp->attr.page_size = shift - 12;
684 mhp->attr.len = (u32) length;
685
686 err = iwch_register_mem(rhp, php, mhp, shift);
687 if (err)
688 goto err_pbl;
689
690 if (udata && !t3a_device(rhp)) {
691 uresp.pbl_addr = (mhp->attr.pbl_addr -
692 rhp->rdev.rnic_info.pbl_base) >> 3;
693 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
694 uresp.pbl_addr);
695
696 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
697 iwch_dereg_mr(&mhp->ibmr);
698 err = -EFAULT;
699 goto err;
700 }
701 }
702
703 return &mhp->ibmr;
704
705 err_pbl:
706 iwch_free_pbl(mhp);
707
708 err:
709 ib_umem_release(mhp->umem);
710 kfree(mhp);
711 return ERR_PTR(err);
712 }
713
714 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
715 {
716 struct ib_phys_buf bl;
717 u64 kva;
718 struct ib_mr *ibmr;
719
720 PDBG("%s ib_pd %p\n", __func__, pd);
721
722 /*
723 * T3 only supports 32 bits of size.
724 */
725 bl.size = 0xffffffff;
726 bl.addr = 0;
727 kva = 0;
728 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
729 return ibmr;
730 }
731
732 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
733 {
734 struct iwch_dev *rhp;
735 struct iwch_pd *php;
736 struct iwch_mw *mhp;
737 u32 mmid;
738 u32 stag = 0;
739 int ret;
740
741 php = to_iwch_pd(pd);
742 rhp = php->rhp;
743 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
744 if (!mhp)
745 return ERR_PTR(-ENOMEM);
746 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
747 if (ret) {
748 kfree(mhp);
749 return ERR_PTR(ret);
750 }
751 mhp->rhp = rhp;
752 mhp->attr.pdid = php->pdid;
753 mhp->attr.type = TPT_MW;
754 mhp->attr.stag = stag;
755 mmid = (stag) >> 8;
756 mhp->ibmw.rkey = stag;
757 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
758 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
759 kfree(mhp);
760 return ERR_PTR(-ENOMEM);
761 }
762 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
763 return &(mhp->ibmw);
764 }
765
766 static int iwch_dealloc_mw(struct ib_mw *mw)
767 {
768 struct iwch_dev *rhp;
769 struct iwch_mw *mhp;
770 u32 mmid;
771
772 mhp = to_iwch_mw(mw);
773 rhp = mhp->rhp;
774 mmid = (mw->rkey) >> 8;
775 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
776 remove_handle(rhp, &rhp->mmidr, mmid);
777 kfree(mhp);
778 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
779 return 0;
780 }
781
782 static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
783 {
784 struct iwch_dev *rhp;
785 struct iwch_pd *php;
786 struct iwch_mr *mhp;
787 u32 mmid;
788 u32 stag = 0;
789 int ret = 0;
790
791 php = to_iwch_pd(pd);
792 rhp = php->rhp;
793 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
794 if (!mhp)
795 goto err;
796
797 mhp->rhp = rhp;
798 ret = iwch_alloc_pbl(mhp, pbl_depth);
799 if (ret)
800 goto err1;
801 mhp->attr.pbl_size = pbl_depth;
802 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
803 mhp->attr.pbl_size, mhp->attr.pbl_addr);
804 if (ret)
805 goto err2;
806 mhp->attr.pdid = php->pdid;
807 mhp->attr.type = TPT_NON_SHARED_MR;
808 mhp->attr.stag = stag;
809 mhp->attr.state = 1;
810 mmid = (stag) >> 8;
811 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
812 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
813 goto err3;
814
815 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
816 return &(mhp->ibmr);
817 err3:
818 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
819 mhp->attr.pbl_addr);
820 err2:
821 iwch_free_pbl(mhp);
822 err1:
823 kfree(mhp);
824 err:
825 return ERR_PTR(ret);
826 }
827
828 static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
829 struct ib_device *device,
830 int page_list_len)
831 {
832 struct ib_fast_reg_page_list *page_list;
833
834 page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
835 GFP_KERNEL);
836 if (!page_list)
837 return ERR_PTR(-ENOMEM);
838
839 page_list->page_list = (u64 *)(page_list + 1);
840 page_list->max_page_list_len = page_list_len;
841
842 return page_list;
843 }
844
845 static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
846 {
847 kfree(page_list);
848 }
849
850 static int iwch_destroy_qp(struct ib_qp *ib_qp)
851 {
852 struct iwch_dev *rhp;
853 struct iwch_qp *qhp;
854 struct iwch_qp_attributes attrs;
855 struct iwch_ucontext *ucontext;
856
857 qhp = to_iwch_qp(ib_qp);
858 rhp = qhp->rhp;
859
860 attrs.next_state = IWCH_QP_STATE_ERROR;
861 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
862 wait_event(qhp->wait, !qhp->ep);
863
864 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
865
866 atomic_dec(&qhp->refcnt);
867 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
868
869 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
870 : NULL;
871 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
872 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
873
874 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
875 ib_qp, qhp->wq.qpid, qhp);
876 kfree(qhp);
877 return 0;
878 }
879
880 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
881 struct ib_qp_init_attr *attrs,
882 struct ib_udata *udata)
883 {
884 struct iwch_dev *rhp;
885 struct iwch_qp *qhp;
886 struct iwch_pd *php;
887 struct iwch_cq *schp;
888 struct iwch_cq *rchp;
889 struct iwch_create_qp_resp uresp;
890 int wqsize, sqsize, rqsize;
891 struct iwch_ucontext *ucontext;
892
893 PDBG("%s ib_pd %p\n", __func__, pd);
894 if (attrs->qp_type != IB_QPT_RC)
895 return ERR_PTR(-EINVAL);
896 php = to_iwch_pd(pd);
897 rhp = php->rhp;
898 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
899 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
900 if (!schp || !rchp)
901 return ERR_PTR(-EINVAL);
902
903 /* The RQT size must be # of entries + 1 rounded up to a power of two */
904 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
905 if (rqsize == attrs->cap.max_recv_wr)
906 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
907
908 /* T3 doesn't support RQT depth < 16 */
909 if (rqsize < 16)
910 rqsize = 16;
911
912 if (rqsize > T3_MAX_RQ_SIZE)
913 return ERR_PTR(-EINVAL);
914
915 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
916 return ERR_PTR(-EINVAL);
917
918 /*
919 * NOTE: The SQ and total WQ sizes don't need to be
920 * a power of two. However, all the code assumes
921 * they are. EG: Q_FREECNT() and friends.
922 */
923 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
924 wqsize = roundup_pow_of_two(rqsize + sqsize);
925
926 /*
927 * Kernel users need more wq space for fastreg WRs which can take
928 * 2 WR fragments.
929 */
930 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
931 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
932 wqsize = roundup_pow_of_two(rqsize +
933 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
934 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
935 wqsize, sqsize, rqsize);
936 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
937 if (!qhp)
938 return ERR_PTR(-ENOMEM);
939 qhp->wq.size_log2 = ilog2(wqsize);
940 qhp->wq.rq_size_log2 = ilog2(rqsize);
941 qhp->wq.sq_size_log2 = ilog2(sqsize);
942 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
943 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
944 kfree(qhp);
945 return ERR_PTR(-ENOMEM);
946 }
947
948 attrs->cap.max_recv_wr = rqsize - 1;
949 attrs->cap.max_send_wr = sqsize;
950 attrs->cap.max_inline_data = T3_MAX_INLINE;
951
952 qhp->rhp = rhp;
953 qhp->attr.pd = php->pdid;
954 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
955 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
956 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
957 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
958 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
959 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
960 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
961 qhp->attr.state = IWCH_QP_STATE_IDLE;
962 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
963
964 /*
965 * XXX - These don't get passed in from the openib user
966 * at create time. The CM sets them via a QP modify.
967 * Need to fix... I think the CM should
968 */
969 qhp->attr.enable_rdma_read = 1;
970 qhp->attr.enable_rdma_write = 1;
971 qhp->attr.enable_bind = 1;
972 qhp->attr.max_ord = 1;
973 qhp->attr.max_ird = 1;
974
975 spin_lock_init(&qhp->lock);
976 init_waitqueue_head(&qhp->wait);
977 atomic_set(&qhp->refcnt, 1);
978
979 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
980 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
981 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
982 kfree(qhp);
983 return ERR_PTR(-ENOMEM);
984 }
985
986 if (udata) {
987
988 struct iwch_mm_entry *mm1, *mm2;
989
990 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
991 if (!mm1) {
992 iwch_destroy_qp(&qhp->ibqp);
993 return ERR_PTR(-ENOMEM);
994 }
995
996 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
997 if (!mm2) {
998 kfree(mm1);
999 iwch_destroy_qp(&qhp->ibqp);
1000 return ERR_PTR(-ENOMEM);
1001 }
1002
1003 uresp.qpid = qhp->wq.qpid;
1004 uresp.size_log2 = qhp->wq.size_log2;
1005 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
1006 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
1007 spin_lock(&ucontext->mmap_lock);
1008 uresp.key = ucontext->key;
1009 ucontext->key += PAGE_SIZE;
1010 uresp.db_key = ucontext->key;
1011 ucontext->key += PAGE_SIZE;
1012 spin_unlock(&ucontext->mmap_lock);
1013 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
1014 kfree(mm1);
1015 kfree(mm2);
1016 iwch_destroy_qp(&qhp->ibqp);
1017 return ERR_PTR(-EFAULT);
1018 }
1019 mm1->key = uresp.key;
1020 mm1->addr = virt_to_phys(qhp->wq.queue);
1021 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1022 insert_mmap(ucontext, mm1);
1023 mm2->key = uresp.db_key;
1024 mm2->addr = qhp->wq.udb & PAGE_MASK;
1025 mm2->len = PAGE_SIZE;
1026 insert_mmap(ucontext, mm2);
1027 }
1028 qhp->ibqp.qp_num = qhp->wq.qpid;
1029 init_timer(&(qhp->timer));
1030 PDBG("%s sq_num_entries %d, rq_num_entries %d "
1031 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
1032 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
1033 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
1034 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
1035 return &qhp->ibqp;
1036 }
1037
1038 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1039 int attr_mask, struct ib_udata *udata)
1040 {
1041 struct iwch_dev *rhp;
1042 struct iwch_qp *qhp;
1043 enum iwch_qp_attr_mask mask = 0;
1044 struct iwch_qp_attributes attrs;
1045
1046 PDBG("%s ib_qp %p\n", __func__, ibqp);
1047
1048 /* iwarp does not support the RTR state */
1049 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1050 attr_mask &= ~IB_QP_STATE;
1051
1052 /* Make sure we still have something left to do */
1053 if (!attr_mask)
1054 return 0;
1055
1056 memset(&attrs, 0, sizeof attrs);
1057 qhp = to_iwch_qp(ibqp);
1058 rhp = qhp->rhp;
1059
1060 attrs.next_state = iwch_convert_state(attr->qp_state);
1061 attrs.enable_rdma_read = (attr->qp_access_flags &
1062 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1063 attrs.enable_rdma_write = (attr->qp_access_flags &
1064 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1065 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1066
1067
1068 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1069 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1070 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1071 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1072 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1073
1074 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1075 }
1076
1077 void iwch_qp_add_ref(struct ib_qp *qp)
1078 {
1079 PDBG("%s ib_qp %p\n", __func__, qp);
1080 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1081 }
1082
1083 void iwch_qp_rem_ref(struct ib_qp *qp)
1084 {
1085 PDBG("%s ib_qp %p\n", __func__, qp);
1086 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1087 wake_up(&(to_iwch_qp(qp)->wait));
1088 }
1089
1090 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1091 {
1092 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1093 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1094 }
1095
1096
1097 static int iwch_query_pkey(struct ib_device *ibdev,
1098 u8 port, u16 index, u16 * pkey)
1099 {
1100 PDBG("%s ibdev %p\n", __func__, ibdev);
1101 *pkey = 0;
1102 return 0;
1103 }
1104
1105 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1106 int index, union ib_gid *gid)
1107 {
1108 struct iwch_dev *dev;
1109
1110 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
1111 __func__, ibdev, port, index, gid);
1112 dev = to_iwch_dev(ibdev);
1113 BUG_ON(port == 0 || port > 2);
1114 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1115 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1116 return 0;
1117 }
1118
1119 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1120 {
1121 struct ethtool_drvinfo info;
1122 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1123 char *cp, *next;
1124 unsigned fw_maj, fw_min, fw_mic;
1125
1126 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1127
1128 next = info.fw_version + 1;
1129 cp = strsep(&next, ".");
1130 sscanf(cp, "%i", &fw_maj);
1131 cp = strsep(&next, ".");
1132 sscanf(cp, "%i", &fw_min);
1133 cp = strsep(&next, ".");
1134 sscanf(cp, "%i", &fw_mic);
1135
1136 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1137 (fw_mic & 0xffff);
1138 }
1139
1140 static int iwch_query_device(struct ib_device *ibdev,
1141 struct ib_device_attr *props)
1142 {
1143
1144 struct iwch_dev *dev;
1145 PDBG("%s ibdev %p\n", __func__, ibdev);
1146
1147 dev = to_iwch_dev(ibdev);
1148 memset(props, 0, sizeof *props);
1149 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1150 props->hw_ver = dev->rdev.t3cdev_p->type;
1151 props->fw_ver = fw_vers_string_to_u64(dev);
1152 props->device_cap_flags = dev->device_cap_flags;
1153 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1154 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1155 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1156 props->max_mr_size = dev->attr.max_mr_size;
1157 props->max_qp = dev->attr.max_qps;
1158 props->max_qp_wr = dev->attr.max_wrs;
1159 props->max_sge = dev->attr.max_sge_per_wr;
1160 props->max_sge_rd = 1;
1161 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1162 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1163 props->max_cq = dev->attr.max_cqs;
1164 props->max_cqe = dev->attr.max_cqes_per_cq;
1165 props->max_mr = dev->attr.max_mem_regs;
1166 props->max_pd = dev->attr.max_pds;
1167 props->local_ca_ack_delay = 0;
1168 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1169
1170 return 0;
1171 }
1172
1173 static int iwch_query_port(struct ib_device *ibdev,
1174 u8 port, struct ib_port_attr *props)
1175 {
1176 struct iwch_dev *dev;
1177 struct net_device *netdev;
1178 struct in_device *inetdev;
1179
1180 PDBG("%s ibdev %p\n", __func__, ibdev);
1181
1182 dev = to_iwch_dev(ibdev);
1183 netdev = dev->rdev.port_info.lldevs[port-1];
1184
1185 memset(props, 0, sizeof(struct ib_port_attr));
1186 props->max_mtu = IB_MTU_4096;
1187 if (netdev->mtu >= 4096)
1188 props->active_mtu = IB_MTU_4096;
1189 else if (netdev->mtu >= 2048)
1190 props->active_mtu = IB_MTU_2048;
1191 else if (netdev->mtu >= 1024)
1192 props->active_mtu = IB_MTU_1024;
1193 else if (netdev->mtu >= 512)
1194 props->active_mtu = IB_MTU_512;
1195 else
1196 props->active_mtu = IB_MTU_256;
1197
1198 if (!netif_carrier_ok(netdev))
1199 props->state = IB_PORT_DOWN;
1200 else {
1201 inetdev = in_dev_get(netdev);
1202 if (inetdev->ifa_list)
1203 props->state = IB_PORT_ACTIVE;
1204 else
1205 props->state = IB_PORT_INIT;
1206 in_dev_put(inetdev);
1207 }
1208
1209 props->port_cap_flags =
1210 IB_PORT_CM_SUP |
1211 IB_PORT_SNMP_TUNNEL_SUP |
1212 IB_PORT_REINIT_SUP |
1213 IB_PORT_DEVICE_MGMT_SUP |
1214 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1215 props->gid_tbl_len = 1;
1216 props->pkey_tbl_len = 1;
1217 props->active_width = 2;
1218 props->active_speed = 2;
1219 props->max_msg_sz = -1;
1220
1221 return 0;
1222 }
1223
1224 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1225 char *buf)
1226 {
1227 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1228 ibdev.dev);
1229 PDBG("%s dev 0x%p\n", __func__, dev);
1230 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1231 }
1232
1233 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
1234 {
1235 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1236 ibdev.dev);
1237 struct ethtool_drvinfo info;
1238 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1239
1240 PDBG("%s dev 0x%p\n", __func__, dev);
1241 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1242 return sprintf(buf, "%s\n", info.fw_version);
1243 }
1244
1245 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1246 char *buf)
1247 {
1248 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1249 ibdev.dev);
1250 struct ethtool_drvinfo info;
1251 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1252
1253 PDBG("%s dev 0x%p\n", __func__, dev);
1254 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1255 return sprintf(buf, "%s\n", info.driver);
1256 }
1257
1258 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1259 char *buf)
1260 {
1261 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1262 ibdev.dev);
1263 PDBG("%s dev 0x%p\n", __func__, dev);
1264 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1265 iwch_dev->rdev.rnic_info.pdev->device);
1266 }
1267
1268 static int iwch_get_mib(struct ib_device *ibdev,
1269 union rdma_protocol_stats *stats)
1270 {
1271 struct iwch_dev *dev;
1272 struct tp_mib_stats m;
1273 int ret;
1274
1275 PDBG("%s ibdev %p\n", __func__, ibdev);
1276 dev = to_iwch_dev(ibdev);
1277 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1278 if (ret)
1279 return -ENOSYS;
1280
1281 memset(stats, 0, sizeof *stats);
1282 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1283 m.ipInReceive_lo;
1284 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1285 m.ipInHdrErrors_lo;
1286 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1287 m.ipInAddrErrors_lo;
1288 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1289 m.ipInUnknownProtos_lo;
1290 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1291 m.ipInDiscards_lo;
1292 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1293 m.ipInDelivers_lo;
1294 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1295 m.ipOutRequests_lo;
1296 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1297 m.ipOutDiscards_lo;
1298 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1299 m.ipOutNoRoutes_lo;
1300 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1301 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1302 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1303 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1304 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1305 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1306 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1307 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1308 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1309 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1310 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1311 m.tcpInSegs_lo;
1312 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1313 m.tcpOutSegs_lo;
1314 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1315 m.tcpRetransSeg_lo;
1316 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1317 m.tcpInErrs_lo;
1318 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1319 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1320 return 0;
1321 }
1322
1323 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1324 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1325 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1326 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1327
1328 static struct device_attribute *iwch_class_attributes[] = {
1329 &dev_attr_hw_rev,
1330 &dev_attr_fw_ver,
1331 &dev_attr_hca_type,
1332 &dev_attr_board_id,
1333 };
1334
1335 int iwch_register_device(struct iwch_dev *dev)
1336 {
1337 int ret;
1338 int i;
1339
1340 PDBG("%s iwch_dev %p\n", __func__, dev);
1341 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1342 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1343 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1344 dev->ibdev.owner = THIS_MODULE;
1345 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1346 IB_DEVICE_MEM_WINDOW |
1347 IB_DEVICE_MEM_MGT_EXTENSIONS;
1348
1349 /* cxgb3 supports STag 0. */
1350 dev->ibdev.local_dma_lkey = 0;
1351
1352 dev->ibdev.uverbs_cmd_mask =
1353 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1354 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1355 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1356 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1357 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1358 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1359 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1360 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1361 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1362 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1363 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1364 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1365 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1366 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1367 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1368 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1369 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1370 dev->ibdev.node_type = RDMA_NODE_RNIC;
1371 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1372 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1373 dev->ibdev.num_comp_vectors = 1;
1374 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1375 dev->ibdev.query_device = iwch_query_device;
1376 dev->ibdev.query_port = iwch_query_port;
1377 dev->ibdev.modify_port = iwch_modify_port;
1378 dev->ibdev.query_pkey = iwch_query_pkey;
1379 dev->ibdev.query_gid = iwch_query_gid;
1380 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1381 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1382 dev->ibdev.mmap = iwch_mmap;
1383 dev->ibdev.alloc_pd = iwch_allocate_pd;
1384 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1385 dev->ibdev.create_ah = iwch_ah_create;
1386 dev->ibdev.destroy_ah = iwch_ah_destroy;
1387 dev->ibdev.create_qp = iwch_create_qp;
1388 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1389 dev->ibdev.destroy_qp = iwch_destroy_qp;
1390 dev->ibdev.create_cq = iwch_create_cq;
1391 dev->ibdev.destroy_cq = iwch_destroy_cq;
1392 dev->ibdev.resize_cq = iwch_resize_cq;
1393 dev->ibdev.poll_cq = iwch_poll_cq;
1394 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1395 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1396 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1397 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1398 dev->ibdev.dereg_mr = iwch_dereg_mr;
1399 dev->ibdev.alloc_mw = iwch_alloc_mw;
1400 dev->ibdev.bind_mw = iwch_bind_mw;
1401 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1402 dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
1403 dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1404 dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
1405 dev->ibdev.attach_mcast = iwch_multicast_attach;
1406 dev->ibdev.detach_mcast = iwch_multicast_detach;
1407 dev->ibdev.process_mad = iwch_process_mad;
1408 dev->ibdev.req_notify_cq = iwch_arm_cq;
1409 dev->ibdev.post_send = iwch_post_send;
1410 dev->ibdev.post_recv = iwch_post_receive;
1411 dev->ibdev.get_protocol_stats = iwch_get_mib;
1412
1413 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1414 if (!dev->ibdev.iwcm)
1415 return -ENOMEM;
1416
1417 dev->ibdev.iwcm->connect = iwch_connect;
1418 dev->ibdev.iwcm->accept = iwch_accept_cr;
1419 dev->ibdev.iwcm->reject = iwch_reject_cr;
1420 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1421 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1422 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1423 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1424 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1425
1426 ret = ib_register_device(&dev->ibdev);
1427 if (ret)
1428 goto bail1;
1429
1430 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1431 ret = device_create_file(&dev->ibdev.dev,
1432 iwch_class_attributes[i]);
1433 if (ret) {
1434 goto bail2;
1435 }
1436 }
1437 return 0;
1438 bail2:
1439 ib_unregister_device(&dev->ibdev);
1440 bail1:
1441 kfree(dev->ibdev.iwcm);
1442 return ret;
1443 }
1444
1445 void iwch_unregister_device(struct iwch_dev *dev)
1446 {
1447 int i;
1448
1449 PDBG("%s iwch_dev %p\n", __func__, dev);
1450 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1451 device_remove_file(&dev->ibdev.dev,
1452 iwch_class_attributes[i]);
1453 ib_unregister_device(&dev->ibdev);
1454 kfree(dev->ibdev.iwcm);
1455 return;
1456 }
Linux with added FPC-III support