Merge branch 'linus' into sched/core
[linux-3.10.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 }