Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
[linux-2.6] / 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/spinlock.h>
41 #include <linux/ethtool.h>
42 #include <linux/rtnetlink.h>
43
44 #include <asm/io.h>
45 #include <asm/irq.h>
46 #include <asm/byteorder.h>
47
48 #include <rdma/iw_cm.h>
49 #include <rdma/ib_verbs.h>
50 #include <rdma/ib_smi.h>
51 #include <rdma/ib_umem.h>
52 #include <rdma/ib_user_verbs.h>
53
54 #include "cxio_hal.h"
55 #include "iwch.h"
56 #include "iwch_provider.h"
57 #include "iwch_cm.h"
58 #include "iwch_user.h"
59 #include "common.h"
60
61 static int iwch_modify_port(struct ib_device *ibdev,
62                             u8 port, int port_modify_mask,
63                             struct ib_port_modify *props)
64 {
65         return -ENOSYS;
66 }
67
68 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
69                                     struct ib_ah_attr *ah_attr)
70 {
71         return ERR_PTR(-ENOSYS);
72 }
73
74 static int iwch_ah_destroy(struct ib_ah *ah)
75 {
76         return -ENOSYS;
77 }
78
79 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
80 {
81         return -ENOSYS;
82 }
83
84 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
85 {
86         return -ENOSYS;
87 }
88
89 static int iwch_process_mad(struct ib_device *ibdev,
90                             int mad_flags,
91                             u8 port_num,
92                             struct ib_wc *in_wc,
93                             struct ib_grh *in_grh,
94                             struct ib_mad *in_mad, struct ib_mad *out_mad)
95 {
96         return -ENOSYS;
97 }
98
99 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
100 {
101         struct iwch_dev *rhp = to_iwch_dev(context->device);
102         struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
103         struct iwch_mm_entry *mm, *tmp;
104
105         PDBG("%s context %p\n", __func__, context);
106         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
107                 kfree(mm);
108         cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
109         kfree(ucontext);
110         return 0;
111 }
112
113 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
114                                         struct ib_udata *udata)
115 {
116         struct iwch_ucontext *context;
117         struct iwch_dev *rhp = to_iwch_dev(ibdev);
118
119         PDBG("%s ibdev %p\n", __func__, ibdev);
120         context = kzalloc(sizeof(*context), GFP_KERNEL);
121         if (!context)
122                 return ERR_PTR(-ENOMEM);
123         cxio_init_ucontext(&rhp->rdev, &context->uctx);
124         INIT_LIST_HEAD(&context->mmaps);
125         spin_lock_init(&context->mmap_lock);
126         return &context->ibucontext;
127 }
128
129 static int iwch_destroy_cq(struct ib_cq *ib_cq)
130 {
131         struct iwch_cq *chp;
132
133         PDBG("%s ib_cq %p\n", __func__, ib_cq);
134         chp = to_iwch_cq(ib_cq);
135
136         remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
137         atomic_dec(&chp->refcnt);
138         wait_event(chp->wait, !atomic_read(&chp->refcnt));
139
140         cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
141         kfree(chp);
142         return 0;
143 }
144
145 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
146                              struct ib_ucontext *ib_context,
147                              struct ib_udata *udata)
148 {
149         struct iwch_dev *rhp;
150         struct iwch_cq *chp;
151         struct iwch_create_cq_resp uresp;
152         struct iwch_create_cq_req ureq;
153         struct iwch_ucontext *ucontext = NULL;
154
155         PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
156         rhp = to_iwch_dev(ibdev);
157         chp = kzalloc(sizeof(*chp), GFP_KERNEL);
158         if (!chp)
159                 return ERR_PTR(-ENOMEM);
160
161         if (ib_context) {
162                 ucontext = to_iwch_ucontext(ib_context);
163                 if (!t3a_device(rhp)) {
164                         if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
165                                 kfree(chp);
166                                 return ERR_PTR(-EFAULT);
167                         }
168                         chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
169                 }
170         }
171
172         if (t3a_device(rhp)) {
173
174                 /*
175                  * T3A: Add some fluff to handle extra CQEs inserted
176                  * for various errors.
177                  * Additional CQE possibilities:
178                  *      TERMINATE,
179                  *      incoming RDMA WRITE Failures
180                  *      incoming RDMA READ REQUEST FAILUREs
181                  * NOTE: We cannot ensure the CQ won't overflow.
182                  */
183                 entries += 16;
184         }
185         entries = roundup_pow_of_two(entries);
186         chp->cq.size_log2 = ilog2(entries);
187
188         if (cxio_create_cq(&rhp->rdev, &chp->cq)) {
189                 kfree(chp);
190                 return ERR_PTR(-ENOMEM);
191         }
192         chp->rhp = rhp;
193         chp->ibcq.cqe = 1 << chp->cq.size_log2;
194         spin_lock_init(&chp->lock);
195         atomic_set(&chp->refcnt, 1);
196         init_waitqueue_head(&chp->wait);
197         insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
198
199         if (ucontext) {
200                 struct iwch_mm_entry *mm;
201
202                 mm = kmalloc(sizeof *mm, GFP_KERNEL);
203                 if (!mm) {
204                         iwch_destroy_cq(&chp->ibcq);
205                         return ERR_PTR(-ENOMEM);
206                 }
207                 uresp.cqid = chp->cq.cqid;
208                 uresp.size_log2 = chp->cq.size_log2;
209                 spin_lock(&ucontext->mmap_lock);
210                 uresp.key = ucontext->key;
211                 ucontext->key += PAGE_SIZE;
212                 spin_unlock(&ucontext->mmap_lock);
213                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
214                         kfree(mm);
215                         iwch_destroy_cq(&chp->ibcq);
216                         return ERR_PTR(-EFAULT);
217                 }
218                 mm->key = uresp.key;
219                 mm->addr = virt_to_phys(chp->cq.queue);
220                 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
221                                              sizeof (struct t3_cqe));
222                 insert_mmap(ucontext, mm);
223         }
224         PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
225              chp->cq.cqid, chp, (1 << chp->cq.size_log2),
226              (unsigned long long) chp->cq.dma_addr);
227         return &chp->ibcq;
228 }
229
230 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
231 {
232 #ifdef notyet
233         struct iwch_cq *chp = to_iwch_cq(cq);
234         struct t3_cq oldcq, newcq;
235         int ret;
236
237         PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
238
239         /* We don't downsize... */
240         if (cqe <= cq->cqe)
241                 return 0;
242
243         /* create new t3_cq with new size */
244         cqe = roundup_pow_of_two(cqe+1);
245         newcq.size_log2 = ilog2(cqe);
246
247         /* Dont allow resize to less than the current wce count */
248         if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
249                 return -ENOMEM;
250         }
251
252         /* Quiesce all QPs using this CQ */
253         ret = iwch_quiesce_qps(chp);
254         if (ret) {
255                 return ret;
256         }
257
258         ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
259         if (ret) {
260                 return ret;
261         }
262
263         /* copy CQEs */
264         memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
265                                         sizeof(struct t3_cqe));
266
267         /* old iwch_qp gets new t3_cq but keeps old cqid */
268         oldcq = chp->cq;
269         chp->cq = newcq;
270         chp->cq.cqid = oldcq.cqid;
271
272         /* resize new t3_cq to update the HW context */
273         ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
274         if (ret) {
275                 chp->cq = oldcq;
276                 return ret;
277         }
278         chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
279
280         /* destroy old t3_cq */
281         oldcq.cqid = newcq.cqid;
282         ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
283         if (ret) {
284                 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
285                         __func__, ret);
286         }
287
288         /* add user hooks here */
289
290         /* resume qps */
291         ret = iwch_resume_qps(chp);
292         return ret;
293 #else
294         return -ENOSYS;
295 #endif
296 }
297
298 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
299 {
300         struct iwch_dev *rhp;
301         struct iwch_cq *chp;
302         enum t3_cq_opcode cq_op;
303         int err;
304         unsigned long flag;
305         u32 rptr;
306
307         chp = to_iwch_cq(ibcq);
308         rhp = chp->rhp;
309         if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
310                 cq_op = CQ_ARM_SE;
311         else
312                 cq_op = CQ_ARM_AN;
313         if (chp->user_rptr_addr) {
314                 if (get_user(rptr, chp->user_rptr_addr))
315                         return -EFAULT;
316                 spin_lock_irqsave(&chp->lock, flag);
317                 chp->cq.rptr = rptr;
318         } else
319                 spin_lock_irqsave(&chp->lock, flag);
320         PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
321         err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
322         spin_unlock_irqrestore(&chp->lock, flag);
323         if (err < 0)
324                 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
325                        chp->cq.cqid);
326         if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
327                 err = 0;
328         return err;
329 }
330
331 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
332 {
333         int len = vma->vm_end - vma->vm_start;
334         u32 key = vma->vm_pgoff << PAGE_SHIFT;
335         struct cxio_rdev *rdev_p;
336         int ret = 0;
337         struct iwch_mm_entry *mm;
338         struct iwch_ucontext *ucontext;
339         u64 addr;
340
341         PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
342              key, len);
343
344         if (vma->vm_start & (PAGE_SIZE-1)) {
345                 return -EINVAL;
346         }
347
348         rdev_p = &(to_iwch_dev(context->device)->rdev);
349         ucontext = to_iwch_ucontext(context);
350
351         mm = remove_mmap(ucontext, key, len);
352         if (!mm)
353                 return -EINVAL;
354         addr = mm->addr;
355         kfree(mm);
356
357         if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
358             (addr < (rdev_p->rnic_info.udbell_physbase +
359                        rdev_p->rnic_info.udbell_len))) {
360
361                 /*
362                  * Map T3 DB register.
363                  */
364                 if (vma->vm_flags & VM_READ) {
365                         return -EPERM;
366                 }
367
368                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
369                 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
370                 vma->vm_flags &= ~VM_MAYREAD;
371                 ret = io_remap_pfn_range(vma, vma->vm_start,
372                                          addr >> PAGE_SHIFT,
373                                          len, vma->vm_page_prot);
374         } else {
375
376                 /*
377                  * Map WQ or CQ contig dma memory...
378                  */
379                 ret = remap_pfn_range(vma, vma->vm_start,
380                                       addr >> PAGE_SHIFT,
381                                       len, vma->vm_page_prot);
382         }
383
384         return ret;
385 }
386
387 static int iwch_deallocate_pd(struct ib_pd *pd)
388 {
389         struct iwch_dev *rhp;
390         struct iwch_pd *php;
391
392         php = to_iwch_pd(pd);
393         rhp = php->rhp;
394         PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
395         cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
396         kfree(php);
397         return 0;
398 }
399
400 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
401                                struct ib_ucontext *context,
402                                struct ib_udata *udata)
403 {
404         struct iwch_pd *php;
405         u32 pdid;
406         struct iwch_dev *rhp;
407
408         PDBG("%s ibdev %p\n", __func__, ibdev);
409         rhp = (struct iwch_dev *) ibdev;
410         pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
411         if (!pdid)
412                 return ERR_PTR(-EINVAL);
413         php = kzalloc(sizeof(*php), GFP_KERNEL);
414         if (!php) {
415                 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
416                 return ERR_PTR(-ENOMEM);
417         }
418         php->pdid = pdid;
419         php->rhp = rhp;
420         if (context) {
421                 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
422                         iwch_deallocate_pd(&php->ibpd);
423                         return ERR_PTR(-EFAULT);
424                 }
425         }
426         PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
427         return &php->ibpd;
428 }
429
430 static int iwch_dereg_mr(struct ib_mr *ib_mr)
431 {
432         struct iwch_dev *rhp;
433         struct iwch_mr *mhp;
434         u32 mmid;
435
436         PDBG("%s ib_mr %p\n", __func__, ib_mr);
437         /* There can be no memory windows */
438         if (atomic_read(&ib_mr->usecnt))
439                 return -EINVAL;
440
441         mhp = to_iwch_mr(ib_mr);
442         rhp = mhp->rhp;
443         mmid = mhp->attr.stag >> 8;
444         cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
445                        mhp->attr.pbl_addr);
446         iwch_free_pbl(mhp);
447         remove_handle(rhp, &rhp->mmidr, mmid);
448         if (mhp->kva)
449                 kfree((void *) (unsigned long) mhp->kva);
450         if (mhp->umem)
451                 ib_umem_release(mhp->umem);
452         PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
453         kfree(mhp);
454         return 0;
455 }
456
457 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
458                                         struct ib_phys_buf *buffer_list,
459                                         int num_phys_buf,
460                                         int acc,
461                                         u64 *iova_start)
462 {
463         __be64 *page_list;
464         int shift;
465         u64 total_size;
466         int npages;
467         struct iwch_dev *rhp;
468         struct iwch_pd *php;
469         struct iwch_mr *mhp;
470         int ret;
471
472         PDBG("%s ib_pd %p\n", __func__, pd);
473         php = to_iwch_pd(pd);
474         rhp = php->rhp;
475
476         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
477         if (!mhp)
478                 return ERR_PTR(-ENOMEM);
479
480         mhp->rhp = rhp;
481
482         /* First check that we have enough alignment */
483         if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
484                 ret = -EINVAL;
485                 goto err;
486         }
487
488         if (num_phys_buf > 1 &&
489             ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
490                 ret = -EINVAL;
491                 goto err;
492         }
493
494         ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
495                                    &total_size, &npages, &shift, &page_list);
496         if (ret)
497                 goto err;
498
499         ret = iwch_alloc_pbl(mhp, npages);
500         if (ret) {
501                 kfree(page_list);
502                 goto err_pbl;
503         }
504
505         ret = iwch_write_pbl(mhp, page_list, npages, 0);
506         kfree(page_list);
507         if (ret)
508                 goto err_pbl;
509
510         mhp->attr.pdid = php->pdid;
511         mhp->attr.zbva = 0;
512
513         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
514         mhp->attr.va_fbo = *iova_start;
515         mhp->attr.page_size = shift - 12;
516
517         mhp->attr.len = (u32) total_size;
518         mhp->attr.pbl_size = npages;
519         ret = iwch_register_mem(rhp, php, mhp, shift);
520         if (ret)
521                 goto err_pbl;
522
523         return &mhp->ibmr;
524
525 err_pbl:
526         iwch_free_pbl(mhp);
527
528 err:
529         kfree(mhp);
530         return ERR_PTR(ret);
531
532 }
533
534 static int iwch_reregister_phys_mem(struct ib_mr *mr,
535                                      int mr_rereg_mask,
536                                      struct ib_pd *pd,
537                                      struct ib_phys_buf *buffer_list,
538                                      int num_phys_buf,
539                                      int acc, u64 * iova_start)
540 {
541
542         struct iwch_mr mh, *mhp;
543         struct iwch_pd *php;
544         struct iwch_dev *rhp;
545         __be64 *page_list = NULL;
546         int shift = 0;
547         u64 total_size;
548         int npages;
549         int ret;
550
551         PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
552
553         /* There can be no memory windows */
554         if (atomic_read(&mr->usecnt))
555                 return -EINVAL;
556
557         mhp = to_iwch_mr(mr);
558         rhp = mhp->rhp;
559         php = to_iwch_pd(mr->pd);
560
561         /* make sure we are on the same adapter */
562         if (rhp != php->rhp)
563                 return -EINVAL;
564
565         memcpy(&mh, mhp, sizeof *mhp);
566
567         if (mr_rereg_mask & IB_MR_REREG_PD)
568                 php = to_iwch_pd(pd);
569         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
570                 mh.attr.perms = iwch_ib_to_tpt_access(acc);
571         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
572                 ret = build_phys_page_list(buffer_list, num_phys_buf,
573                                            iova_start,
574                                            &total_size, &npages,
575                                            &shift, &page_list);
576                 if (ret)
577                         return ret;
578         }
579
580         ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
581         kfree(page_list);
582         if (ret) {
583                 return ret;
584         }
585         if (mr_rereg_mask & IB_MR_REREG_PD)
586                 mhp->attr.pdid = php->pdid;
587         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
588                 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
589         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
590                 mhp->attr.zbva = 0;
591                 mhp->attr.va_fbo = *iova_start;
592                 mhp->attr.page_size = shift - 12;
593                 mhp->attr.len = (u32) total_size;
594                 mhp->attr.pbl_size = npages;
595         }
596
597         return 0;
598 }
599
600
601 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
602                                       u64 virt, int acc, struct ib_udata *udata)
603 {
604         __be64 *pages;
605         int shift, n, len;
606         int i, j, k;
607         int err = 0;
608         struct ib_umem_chunk *chunk;
609         struct iwch_dev *rhp;
610         struct iwch_pd *php;
611         struct iwch_mr *mhp;
612         struct iwch_reg_user_mr_resp uresp;
613
614         PDBG("%s ib_pd %p\n", __func__, pd);
615
616         php = to_iwch_pd(pd);
617         rhp = php->rhp;
618         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
619         if (!mhp)
620                 return ERR_PTR(-ENOMEM);
621
622         mhp->rhp = rhp;
623
624         mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
625         if (IS_ERR(mhp->umem)) {
626                 err = PTR_ERR(mhp->umem);
627                 kfree(mhp);
628                 return ERR_PTR(err);
629         }
630
631         shift = ffs(mhp->umem->page_size) - 1;
632
633         n = 0;
634         list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
635                 n += chunk->nents;
636
637         err = iwch_alloc_pbl(mhp, n);
638         if (err)
639                 goto err;
640
641         pages = (__be64 *) __get_free_page(GFP_KERNEL);
642         if (!pages) {
643                 err = -ENOMEM;
644                 goto err_pbl;
645         }
646
647         i = n = 0;
648
649         list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
650                 for (j = 0; j < chunk->nmap; ++j) {
651                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
652                         for (k = 0; k < len; ++k) {
653                                 pages[i++] = cpu_to_be64(sg_dma_address(
654                                         &chunk->page_list[j]) +
655                                         mhp->umem->page_size * k);
656                                 if (i == PAGE_SIZE / sizeof *pages) {
657                                         err = iwch_write_pbl(mhp, pages, i, n);
658                                         if (err)
659                                                 goto pbl_done;
660                                         n += i;
661                                         i = 0;
662                                 }
663                         }
664                 }
665
666         if (i)
667                 err = iwch_write_pbl(mhp, pages, i, n);
668
669 pbl_done:
670         free_page((unsigned long) pages);
671         if (err)
672                 goto err_pbl;
673
674         mhp->attr.pdid = php->pdid;
675         mhp->attr.zbva = 0;
676         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
677         mhp->attr.va_fbo = virt;
678         mhp->attr.page_size = shift - 12;
679         mhp->attr.len = (u32) length;
680
681         err = iwch_register_mem(rhp, php, mhp, shift);
682         if (err)
683                 goto err_pbl;
684
685         if (udata && !t3a_device(rhp)) {
686                 uresp.pbl_addr = (mhp->attr.pbl_addr -
687                                  rhp->rdev.rnic_info.pbl_base) >> 3;
688                 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
689                      uresp.pbl_addr);
690
691                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
692                         iwch_dereg_mr(&mhp->ibmr);
693                         err = -EFAULT;
694                         goto err;
695                 }
696         }
697
698         return &mhp->ibmr;
699
700 err_pbl:
701         iwch_free_pbl(mhp);
702
703 err:
704         ib_umem_release(mhp->umem);
705         kfree(mhp);
706         return ERR_PTR(err);
707 }
708
709 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
710 {
711         struct ib_phys_buf bl;
712         u64 kva;
713         struct ib_mr *ibmr;
714
715         PDBG("%s ib_pd %p\n", __func__, pd);
716
717         /*
718          * T3 only supports 32 bits of size.
719          */
720         bl.size = 0xffffffff;
721         bl.addr = 0;
722         kva = 0;
723         ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
724         return ibmr;
725 }
726
727 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
728 {
729         struct iwch_dev *rhp;
730         struct iwch_pd *php;
731         struct iwch_mw *mhp;
732         u32 mmid;
733         u32 stag = 0;
734         int ret;
735
736         php = to_iwch_pd(pd);
737         rhp = php->rhp;
738         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
739         if (!mhp)
740                 return ERR_PTR(-ENOMEM);
741         ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
742         if (ret) {
743                 kfree(mhp);
744                 return ERR_PTR(ret);
745         }
746         mhp->rhp = rhp;
747         mhp->attr.pdid = php->pdid;
748         mhp->attr.type = TPT_MW;
749         mhp->attr.stag = stag;
750         mmid = (stag) >> 8;
751         mhp->ibmw.rkey = stag;
752         insert_handle(rhp, &rhp->mmidr, mhp, mmid);
753         PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
754         return &(mhp->ibmw);
755 }
756
757 static int iwch_dealloc_mw(struct ib_mw *mw)
758 {
759         struct iwch_dev *rhp;
760         struct iwch_mw *mhp;
761         u32 mmid;
762
763         mhp = to_iwch_mw(mw);
764         rhp = mhp->rhp;
765         mmid = (mw->rkey) >> 8;
766         cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
767         remove_handle(rhp, &rhp->mmidr, mmid);
768         kfree(mhp);
769         PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
770         return 0;
771 }
772
773 static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
774 {
775         struct iwch_dev *rhp;
776         struct iwch_pd *php;
777         struct iwch_mr *mhp;
778         u32 mmid;
779         u32 stag = 0;
780         int ret;
781
782         php = to_iwch_pd(pd);
783         rhp = php->rhp;
784         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
785         if (!mhp)
786                 return ERR_PTR(-ENOMEM);
787
788         mhp->rhp = rhp;
789         ret = iwch_alloc_pbl(mhp, pbl_depth);
790         if (ret) {
791                 kfree(mhp);
792                 return ERR_PTR(ret);
793         }
794         mhp->attr.pbl_size = pbl_depth;
795         ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
796                                  mhp->attr.pbl_size, mhp->attr.pbl_addr);
797         if (ret) {
798                 iwch_free_pbl(mhp);
799                 kfree(mhp);
800                 return ERR_PTR(ret);
801         }
802         mhp->attr.pdid = php->pdid;
803         mhp->attr.type = TPT_NON_SHARED_MR;
804         mhp->attr.stag = stag;
805         mhp->attr.state = 1;
806         mmid = (stag) >> 8;
807         mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
808         insert_handle(rhp, &rhp->mmidr, mhp, mmid);
809         PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
810         return &(mhp->ibmr);
811 }
812
813 static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
814                                         struct ib_device *device,
815                                         int page_list_len)
816 {
817         struct ib_fast_reg_page_list *page_list;
818
819         page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
820                             GFP_KERNEL);
821         if (!page_list)
822                 return ERR_PTR(-ENOMEM);
823
824         page_list->page_list = (u64 *)(page_list + 1);
825         page_list->max_page_list_len = page_list_len;
826
827         return page_list;
828 }
829
830 static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
831 {
832         kfree(page_list);
833 }
834
835 static int iwch_destroy_qp(struct ib_qp *ib_qp)
836 {
837         struct iwch_dev *rhp;
838         struct iwch_qp *qhp;
839         struct iwch_qp_attributes attrs;
840         struct iwch_ucontext *ucontext;
841
842         qhp = to_iwch_qp(ib_qp);
843         rhp = qhp->rhp;
844
845         attrs.next_state = IWCH_QP_STATE_ERROR;
846         iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
847         wait_event(qhp->wait, !qhp->ep);
848
849         remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
850
851         atomic_dec(&qhp->refcnt);
852         wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
853
854         ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
855                                   : NULL;
856         cxio_destroy_qp(&rhp->rdev, &qhp->wq,
857                         ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
858
859         PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
860              ib_qp, qhp->wq.qpid, qhp);
861         kfree(qhp);
862         return 0;
863 }
864
865 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
866                              struct ib_qp_init_attr *attrs,
867                              struct ib_udata *udata)
868 {
869         struct iwch_dev *rhp;
870         struct iwch_qp *qhp;
871         struct iwch_pd *php;
872         struct iwch_cq *schp;
873         struct iwch_cq *rchp;
874         struct iwch_create_qp_resp uresp;
875         int wqsize, sqsize, rqsize;
876         struct iwch_ucontext *ucontext;
877
878         PDBG("%s ib_pd %p\n", __func__, pd);
879         if (attrs->qp_type != IB_QPT_RC)
880                 return ERR_PTR(-EINVAL);
881         php = to_iwch_pd(pd);
882         rhp = php->rhp;
883         schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
884         rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
885         if (!schp || !rchp)
886                 return ERR_PTR(-EINVAL);
887
888         /* The RQT size must be # of entries + 1 rounded up to a power of two */
889         rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
890         if (rqsize == attrs->cap.max_recv_wr)
891                 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
892
893         /* T3 doesn't support RQT depth < 16 */
894         if (rqsize < 16)
895                 rqsize = 16;
896
897         if (rqsize > T3_MAX_RQ_SIZE)
898                 return ERR_PTR(-EINVAL);
899
900         if (attrs->cap.max_inline_data > T3_MAX_INLINE)
901                 return ERR_PTR(-EINVAL);
902
903         /*
904          * NOTE: The SQ and total WQ sizes don't need to be
905          * a power of two.  However, all the code assumes
906          * they are. EG: Q_FREECNT() and friends.
907          */
908         sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
909         wqsize = roundup_pow_of_two(rqsize + sqsize);
910
911         /*
912          * Kernel users need more wq space for fastreg WRs which can take
913          * 2 WR fragments.
914          */
915         ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
916         if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
917                 wqsize = roundup_pow_of_two(rqsize +
918                                 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
919         PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
920              wqsize, sqsize, rqsize);
921         qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
922         if (!qhp)
923                 return ERR_PTR(-ENOMEM);
924         qhp->wq.size_log2 = ilog2(wqsize);
925         qhp->wq.rq_size_log2 = ilog2(rqsize);
926         qhp->wq.sq_size_log2 = ilog2(sqsize);
927         if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
928                            ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
929                 kfree(qhp);
930                 return ERR_PTR(-ENOMEM);
931         }
932
933         attrs->cap.max_recv_wr = rqsize - 1;
934         attrs->cap.max_send_wr = sqsize;
935         attrs->cap.max_inline_data = T3_MAX_INLINE;
936
937         qhp->rhp = rhp;
938         qhp->attr.pd = php->pdid;
939         qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
940         qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
941         qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
942         qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
943         qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
944         qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
945         qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
946         qhp->attr.state = IWCH_QP_STATE_IDLE;
947         qhp->attr.next_state = IWCH_QP_STATE_IDLE;
948
949         /*
950          * XXX - These don't get passed in from the openib user
951          * at create time.  The CM sets them via a QP modify.
952          * Need to fix...  I think the CM should
953          */
954         qhp->attr.enable_rdma_read = 1;
955         qhp->attr.enable_rdma_write = 1;
956         qhp->attr.enable_bind = 1;
957         qhp->attr.max_ord = 1;
958         qhp->attr.max_ird = 1;
959
960         spin_lock_init(&qhp->lock);
961         init_waitqueue_head(&qhp->wait);
962         atomic_set(&qhp->refcnt, 1);
963         insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
964
965         if (udata) {
966
967                 struct iwch_mm_entry *mm1, *mm2;
968
969                 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
970                 if (!mm1) {
971                         iwch_destroy_qp(&qhp->ibqp);
972                         return ERR_PTR(-ENOMEM);
973                 }
974
975                 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
976                 if (!mm2) {
977                         kfree(mm1);
978                         iwch_destroy_qp(&qhp->ibqp);
979                         return ERR_PTR(-ENOMEM);
980                 }
981
982                 uresp.qpid = qhp->wq.qpid;
983                 uresp.size_log2 = qhp->wq.size_log2;
984                 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
985                 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
986                 spin_lock(&ucontext->mmap_lock);
987                 uresp.key = ucontext->key;
988                 ucontext->key += PAGE_SIZE;
989                 uresp.db_key = ucontext->key;
990                 ucontext->key += PAGE_SIZE;
991                 spin_unlock(&ucontext->mmap_lock);
992                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
993                         kfree(mm1);
994                         kfree(mm2);
995                         iwch_destroy_qp(&qhp->ibqp);
996                         return ERR_PTR(-EFAULT);
997                 }
998                 mm1->key = uresp.key;
999                 mm1->addr = virt_to_phys(qhp->wq.queue);
1000                 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1001                 insert_mmap(ucontext, mm1);
1002                 mm2->key = uresp.db_key;
1003                 mm2->addr = qhp->wq.udb & PAGE_MASK;
1004                 mm2->len = PAGE_SIZE;
1005                 insert_mmap(ucontext, mm2);
1006         }
1007         qhp->ibqp.qp_num = qhp->wq.qpid;
1008         init_timer(&(qhp->timer));
1009         PDBG("%s sq_num_entries %d, rq_num_entries %d "
1010              "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
1011              __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
1012              qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
1013              1 << qhp->wq.size_log2, qhp->wq.rq_addr);
1014         return &qhp->ibqp;
1015 }
1016
1017 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1018                       int attr_mask, struct ib_udata *udata)
1019 {
1020         struct iwch_dev *rhp;
1021         struct iwch_qp *qhp;
1022         enum iwch_qp_attr_mask mask = 0;
1023         struct iwch_qp_attributes attrs;
1024
1025         PDBG("%s ib_qp %p\n", __func__, ibqp);
1026
1027         /* iwarp does not support the RTR state */
1028         if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1029                 attr_mask &= ~IB_QP_STATE;
1030
1031         /* Make sure we still have something left to do */
1032         if (!attr_mask)
1033                 return 0;
1034
1035         memset(&attrs, 0, sizeof attrs);
1036         qhp = to_iwch_qp(ibqp);
1037         rhp = qhp->rhp;
1038
1039         attrs.next_state = iwch_convert_state(attr->qp_state);
1040         attrs.enable_rdma_read = (attr->qp_access_flags &
1041                                IB_ACCESS_REMOTE_READ) ?  1 : 0;
1042         attrs.enable_rdma_write = (attr->qp_access_flags &
1043                                 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1044         attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1045
1046
1047         mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1048         mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1049                         (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1050                          IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1051                          IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1052
1053         return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1054 }
1055
1056 void iwch_qp_add_ref(struct ib_qp *qp)
1057 {
1058         PDBG("%s ib_qp %p\n", __func__, qp);
1059         atomic_inc(&(to_iwch_qp(qp)->refcnt));
1060 }
1061
1062 void iwch_qp_rem_ref(struct ib_qp *qp)
1063 {
1064         PDBG("%s ib_qp %p\n", __func__, qp);
1065         if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1066                 wake_up(&(to_iwch_qp(qp)->wait));
1067 }
1068
1069 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1070 {
1071         PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1072         return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1073 }
1074
1075
1076 static int iwch_query_pkey(struct ib_device *ibdev,
1077                            u8 port, u16 index, u16 * pkey)
1078 {
1079         PDBG("%s ibdev %p\n", __func__, ibdev);
1080         *pkey = 0;
1081         return 0;
1082 }
1083
1084 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1085                           int index, union ib_gid *gid)
1086 {
1087         struct iwch_dev *dev;
1088
1089         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
1090                __func__, ibdev, port, index, gid);
1091         dev = to_iwch_dev(ibdev);
1092         BUG_ON(port == 0 || port > 2);
1093         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1094         memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1095         return 0;
1096 }
1097
1098 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1099 {
1100         struct ethtool_drvinfo info;
1101         struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1102         char *cp, *next;
1103         unsigned fw_maj, fw_min, fw_mic;
1104
1105         rtnl_lock();
1106         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1107         rtnl_unlock();
1108
1109         next = info.fw_version + 1;
1110         cp = strsep(&next, ".");
1111         sscanf(cp, "%i", &fw_maj);
1112         cp = strsep(&next, ".");
1113         sscanf(cp, "%i", &fw_min);
1114         cp = strsep(&next, ".");
1115         sscanf(cp, "%i", &fw_mic);
1116
1117         return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1118                (fw_mic & 0xffff);
1119 }
1120
1121 static int iwch_query_device(struct ib_device *ibdev,
1122                              struct ib_device_attr *props)
1123 {
1124
1125         struct iwch_dev *dev;
1126         PDBG("%s ibdev %p\n", __func__, ibdev);
1127
1128         dev = to_iwch_dev(ibdev);
1129         memset(props, 0, sizeof *props);
1130         memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1131         props->hw_ver = dev->rdev.t3cdev_p->type;
1132         props->fw_ver = fw_vers_string_to_u64(dev);
1133         props->device_cap_flags = dev->device_cap_flags;
1134         props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1135         props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1136         props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1137         props->max_mr_size = dev->attr.max_mr_size;
1138         props->max_qp = dev->attr.max_qps;
1139         props->max_qp_wr = dev->attr.max_wrs;
1140         props->max_sge = dev->attr.max_sge_per_wr;
1141         props->max_sge_rd = 1;
1142         props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1143         props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1144         props->max_cq = dev->attr.max_cqs;
1145         props->max_cqe = dev->attr.max_cqes_per_cq;
1146         props->max_mr = dev->attr.max_mem_regs;
1147         props->max_pd = dev->attr.max_pds;
1148         props->local_ca_ack_delay = 0;
1149         props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1150
1151         return 0;
1152 }
1153
1154 static int iwch_query_port(struct ib_device *ibdev,
1155                            u8 port, struct ib_port_attr *props)
1156 {
1157         PDBG("%s ibdev %p\n", __func__, ibdev);
1158         props->max_mtu = IB_MTU_4096;
1159         props->lid = 0;
1160         props->lmc = 0;
1161         props->sm_lid = 0;
1162         props->sm_sl = 0;
1163         props->state = IB_PORT_ACTIVE;
1164         props->phys_state = 0;
1165         props->port_cap_flags =
1166             IB_PORT_CM_SUP |
1167             IB_PORT_SNMP_TUNNEL_SUP |
1168             IB_PORT_REINIT_SUP |
1169             IB_PORT_DEVICE_MGMT_SUP |
1170             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1171         props->gid_tbl_len = 1;
1172         props->pkey_tbl_len = 1;
1173         props->qkey_viol_cntr = 0;
1174         props->active_width = 2;
1175         props->active_speed = 2;
1176         props->max_msg_sz = -1;
1177
1178         return 0;
1179 }
1180
1181 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1182                         char *buf)
1183 {
1184         struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1185                                                  ibdev.dev);
1186         PDBG("%s dev 0x%p\n", __func__, dev);
1187         return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1188 }
1189
1190 static int fw_supports_fastreg(struct iwch_dev *iwch_dev)
1191 {
1192         struct ethtool_drvinfo info;
1193         struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1194         char *cp, *next;
1195         unsigned fw_maj, fw_min;
1196
1197         rtnl_lock();
1198         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1199         rtnl_unlock();
1200
1201         next = info.fw_version+1;
1202         cp = strsep(&next, ".");
1203         sscanf(cp, "%i", &fw_maj);
1204         cp = strsep(&next, ".");
1205         sscanf(cp, "%i", &fw_min);
1206
1207         PDBG("%s maj %u min %u\n", __func__, fw_maj, fw_min);
1208
1209         return fw_maj > 6 || (fw_maj == 6 && fw_min > 0);
1210 }
1211
1212 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
1213 {
1214         struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1215                                                  ibdev.dev);
1216         struct ethtool_drvinfo info;
1217         struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1218
1219         PDBG("%s dev 0x%p\n", __func__, dev);
1220         rtnl_lock();
1221         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1222         rtnl_unlock();
1223         return sprintf(buf, "%s\n", info.fw_version);
1224 }
1225
1226 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1227                         char *buf)
1228 {
1229         struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1230                                                  ibdev.dev);
1231         struct ethtool_drvinfo info;
1232         struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1233
1234         PDBG("%s dev 0x%p\n", __func__, dev);
1235         rtnl_lock();
1236         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1237         rtnl_unlock();
1238         return sprintf(buf, "%s\n", info.driver);
1239 }
1240
1241 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1242                           char *buf)
1243 {
1244         struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1245                                                  ibdev.dev);
1246         PDBG("%s dev 0x%p\n", __func__, dev);
1247         return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1248                        iwch_dev->rdev.rnic_info.pdev->device);
1249 }
1250
1251 static int iwch_get_mib(struct ib_device *ibdev,
1252                         union rdma_protocol_stats *stats)
1253 {
1254         struct iwch_dev *dev;
1255         struct tp_mib_stats m;
1256         int ret;
1257
1258         PDBG("%s ibdev %p\n", __func__, ibdev);
1259         dev = to_iwch_dev(ibdev);
1260         ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1261         if (ret)
1262                 return -ENOSYS;
1263
1264         memset(stats, 0, sizeof *stats);
1265         stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1266                                 m.ipInReceive_lo;
1267         stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1268                                   m.ipInHdrErrors_lo;
1269         stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1270                                    m.ipInAddrErrors_lo;
1271         stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1272                                       m.ipInUnknownProtos_lo;
1273         stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1274                                  m.ipInDiscards_lo;
1275         stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1276                                  m.ipInDelivers_lo;
1277         stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1278                                   m.ipOutRequests_lo;
1279         stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1280                                   m.ipOutDiscards_lo;
1281         stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1282                                   m.ipOutNoRoutes_lo;
1283         stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1284         stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1285         stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1286         stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1287         stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1288         stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1289         stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1290         stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1291         stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1292         stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1293         stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1294                               m.tcpInSegs_lo;
1295         stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1296                                m.tcpOutSegs_lo;
1297         stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1298                                   m.tcpRetransSeg_lo;
1299         stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1300                               m.tcpInErrs_lo;
1301         stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1302         stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1303         return 0;
1304 }
1305
1306 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1307 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1308 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1309 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1310
1311 static struct device_attribute *iwch_class_attributes[] = {
1312         &dev_attr_hw_rev,
1313         &dev_attr_fw_ver,
1314         &dev_attr_hca_type,
1315         &dev_attr_board_id,
1316 };
1317
1318 int iwch_register_device(struct iwch_dev *dev)
1319 {
1320         int ret;
1321         int i;
1322
1323         PDBG("%s iwch_dev %p\n", __func__, dev);
1324         strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1325         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1326         memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1327         dev->ibdev.owner = THIS_MODULE;
1328         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
1329
1330         /* cxgb3 supports STag 0. */
1331         dev->ibdev.local_dma_lkey = 0;
1332         if (fw_supports_fastreg(dev))
1333                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
1334
1335         dev->ibdev.uverbs_cmd_mask =
1336             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1337             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1338             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1339             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1340             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1341             (1ull << IB_USER_VERBS_CMD_REG_MR) |
1342             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1343             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1344             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1345             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1346             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1347             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1348             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1349             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1350             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1351             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1352             (1ull << IB_USER_VERBS_CMD_POST_RECV);
1353         dev->ibdev.node_type = RDMA_NODE_RNIC;
1354         memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1355         dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1356         dev->ibdev.num_comp_vectors = 1;
1357         dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1358         dev->ibdev.query_device = iwch_query_device;
1359         dev->ibdev.query_port = iwch_query_port;
1360         dev->ibdev.modify_port = iwch_modify_port;
1361         dev->ibdev.query_pkey = iwch_query_pkey;
1362         dev->ibdev.query_gid = iwch_query_gid;
1363         dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1364         dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1365         dev->ibdev.mmap = iwch_mmap;
1366         dev->ibdev.alloc_pd = iwch_allocate_pd;
1367         dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1368         dev->ibdev.create_ah = iwch_ah_create;
1369         dev->ibdev.destroy_ah = iwch_ah_destroy;
1370         dev->ibdev.create_qp = iwch_create_qp;
1371         dev->ibdev.modify_qp = iwch_ib_modify_qp;
1372         dev->ibdev.destroy_qp = iwch_destroy_qp;
1373         dev->ibdev.create_cq = iwch_create_cq;
1374         dev->ibdev.destroy_cq = iwch_destroy_cq;
1375         dev->ibdev.resize_cq = iwch_resize_cq;
1376         dev->ibdev.poll_cq = iwch_poll_cq;
1377         dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1378         dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1379         dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1380         dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1381         dev->ibdev.dereg_mr = iwch_dereg_mr;
1382         dev->ibdev.alloc_mw = iwch_alloc_mw;
1383         dev->ibdev.bind_mw = iwch_bind_mw;
1384         dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1385         dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
1386         dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1387         dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
1388         dev->ibdev.attach_mcast = iwch_multicast_attach;
1389         dev->ibdev.detach_mcast = iwch_multicast_detach;
1390         dev->ibdev.process_mad = iwch_process_mad;
1391         dev->ibdev.req_notify_cq = iwch_arm_cq;
1392         dev->ibdev.post_send = iwch_post_send;
1393         dev->ibdev.post_recv = iwch_post_receive;
1394         dev->ibdev.get_protocol_stats = iwch_get_mib;
1395
1396         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1397         if (!dev->ibdev.iwcm)
1398                 return -ENOMEM;
1399
1400         dev->ibdev.iwcm->connect = iwch_connect;
1401         dev->ibdev.iwcm->accept = iwch_accept_cr;
1402         dev->ibdev.iwcm->reject = iwch_reject_cr;
1403         dev->ibdev.iwcm->create_listen = iwch_create_listen;
1404         dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1405         dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1406         dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1407         dev->ibdev.iwcm->get_qp = iwch_get_qp;
1408
1409         ret = ib_register_device(&dev->ibdev);
1410         if (ret)
1411                 goto bail1;
1412
1413         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1414                 ret = device_create_file(&dev->ibdev.dev,
1415                                          iwch_class_attributes[i]);
1416                 if (ret) {
1417                         goto bail2;
1418                 }
1419         }
1420         return 0;
1421 bail2:
1422         ib_unregister_device(&dev->ibdev);
1423 bail1:
1424         return ret;
1425 }
1426
1427 void iwch_unregister_device(struct iwch_dev *dev)
1428 {
1429         int i;
1430
1431         PDBG("%s iwch_dev %p\n", __func__, dev);
1432         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1433                 device_remove_file(&dev->ibdev.dev,
1434                                    iwch_class_attributes[i]);
1435         ib_unregister_device(&dev->ibdev);
1436         return;
1437 }