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Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
blobc7d9411f295427e9fe1ad946ebce3bfba212bb5f
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 struct ib_ah *iwch_ah_create(struct ib_pd *pd,
65 struct ib_ah_attr *ah_attr)
66 {
67 return ERR_PTR(-ENOSYS);
68 }
69
70 static int iwch_ah_destroy(struct ib_ah *ah)
71 {
72 return -ENOSYS;
73 }
74
75 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
76 {
77 return -ENOSYS;
78 }
79
80 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
81 {
82 return -ENOSYS;
83 }
84
85 static int iwch_process_mad(struct ib_device *ibdev,
86 int mad_flags,
87 u8 port_num,
88 struct ib_wc *in_wc,
89 struct ib_grh *in_grh,
90 struct ib_mad *in_mad, struct ib_mad *out_mad)
91 {
92 return -ENOSYS;
93 }
94
95 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
96 {
97 struct iwch_dev *rhp = to_iwch_dev(context->device);
98 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
99 struct iwch_mm_entry *mm, *tmp;
100
101 PDBG("%s context %p\n", __func__, context);
102 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
103 kfree(mm);
104 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
105 kfree(ucontext);
106 return 0;
107 }
108
109 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
110 struct ib_udata *udata)
111 {
112 struct iwch_ucontext *context;
113 struct iwch_dev *rhp = to_iwch_dev(ibdev);
114
115 PDBG("%s ibdev %p\n", __func__, ibdev);
116 context = kzalloc(sizeof(*context), GFP_KERNEL);
117 if (!context)
118 return ERR_PTR(-ENOMEM);
119 cxio_init_ucontext(&rhp->rdev, &context->uctx);
120 INIT_LIST_HEAD(&context->mmaps);
121 spin_lock_init(&context->mmap_lock);
122 return &context->ibucontext;
123 }
124
125 static int iwch_destroy_cq(struct ib_cq *ib_cq)
126 {
127 struct iwch_cq *chp;
128
129 PDBG("%s ib_cq %p\n", __func__, ib_cq);
130 chp = to_iwch_cq(ib_cq);
131
132 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
133 atomic_dec(&chp->refcnt);
134 wait_event(chp->wait, !atomic_read(&chp->refcnt));
135
136 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
137 kfree(chp);
138 return 0;
139 }
140
141 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
142 struct ib_ucontext *ib_context,
143 struct ib_udata *udata)
144 {
145 struct iwch_dev *rhp;
146 struct iwch_cq *chp;
147 struct iwch_create_cq_resp uresp;
148 struct iwch_create_cq_req ureq;
149 struct iwch_ucontext *ucontext = NULL;
150 static int warned;
151 size_t resplen;
152
153 PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
154 rhp = to_iwch_dev(ibdev);
155 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
156 if (!chp)
157 return ERR_PTR(-ENOMEM);
158
159 if (ib_context) {
160 ucontext = to_iwch_ucontext(ib_context);
161 if (!t3a_device(rhp)) {
162 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
163 kfree(chp);
164 return ERR_PTR(-EFAULT);
165 }
166 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
167 }
168 }
169
170 if (t3a_device(rhp)) {
171
172 /*
173 * T3A: Add some fluff to handle extra CQEs inserted
174 * for various errors.
175 * Additional CQE possibilities:
176 * TERMINATE,
177 * incoming RDMA WRITE Failures
178 * incoming RDMA READ REQUEST FAILUREs
179 * NOTE: We cannot ensure the CQ won't overflow.
180 */
181 entries += 16;
182 }
183 entries = roundup_pow_of_two(entries);
184 chp->cq.size_log2 = ilog2(entries);
185
186 if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
187 kfree(chp);
188 return ERR_PTR(-ENOMEM);
189 }
190 chp->rhp = rhp;
191 chp->ibcq.cqe = 1 << chp->cq.size_log2;
192 spin_lock_init(&chp->lock);
193 atomic_set(&chp->refcnt, 1);
194 init_waitqueue_head(&chp->wait);
195 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
196 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
197 kfree(chp);
198 return ERR_PTR(-ENOMEM);
199 }
200
201 if (ucontext) {
202 struct iwch_mm_entry *mm;
203
204 mm = kmalloc(sizeof *mm, GFP_KERNEL);
205 if (!mm) {
206 iwch_destroy_cq(&chp->ibcq);
207 return ERR_PTR(-ENOMEM);
208 }
209 uresp.cqid = chp->cq.cqid;
210 uresp.size_log2 = chp->cq.size_log2;
211 spin_lock(&ucontext->mmap_lock);
212 uresp.key = ucontext->key;
213 ucontext->key += PAGE_SIZE;
214 spin_unlock(&ucontext->mmap_lock);
215 mm->key = uresp.key;
216 mm->addr = virt_to_phys(chp->cq.queue);
217 if (udata->outlen < sizeof uresp) {
218 if (!warned++)
219 printk(KERN_WARNING MOD "Warning - "
220 "downlevel libcxgb3 (non-fatal).\n");
221 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
222 sizeof(struct t3_cqe));
223 resplen = sizeof(struct iwch_create_cq_resp_v0);
224 } else {
225 mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
226 sizeof(struct t3_cqe));
227 uresp.memsize = mm->len;
228 resplen = sizeof uresp;
229 }
230 if (ib_copy_to_udata(udata, &uresp, resplen)) {
231 kfree(mm);
232 iwch_destroy_cq(&chp->ibcq);
233 return ERR_PTR(-EFAULT);
234 }
235 insert_mmap(ucontext, mm);
236 }
237 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
238 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
239 (unsigned long long) chp->cq.dma_addr);
240 return &chp->ibcq;
241 }
242
243 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
244 {
245 #ifdef notyet
246 struct iwch_cq *chp = to_iwch_cq(cq);
247 struct t3_cq oldcq, newcq;
248 int ret;
249
250 PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
251
252 /* We don't downsize... */
253 if (cqe <= cq->cqe)
254 return 0;
255
256 /* create new t3_cq with new size */
257 cqe = roundup_pow_of_two(cqe+1);
258 newcq.size_log2 = ilog2(cqe);
259
260 /* Dont allow resize to less than the current wce count */
261 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
262 return -ENOMEM;
263 }
264
265 /* Quiesce all QPs using this CQ */
266 ret = iwch_quiesce_qps(chp);
267 if (ret) {
268 return ret;
269 }
270
271 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
272 if (ret) {
273 return ret;
274 }
275
276 /* copy CQEs */
277 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
278 sizeof(struct t3_cqe));
279
280 /* old iwch_qp gets new t3_cq but keeps old cqid */
281 oldcq = chp->cq;
282 chp->cq = newcq;
283 chp->cq.cqid = oldcq.cqid;
284
285 /* resize new t3_cq to update the HW context */
286 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
287 if (ret) {
288 chp->cq = oldcq;
289 return ret;
290 }
291 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
292
293 /* destroy old t3_cq */
294 oldcq.cqid = newcq.cqid;
295 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
296 if (ret) {
297 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
298 __func__, ret);
299 }
300
301 /* add user hooks here */
302
303 /* resume qps */
304 ret = iwch_resume_qps(chp);
305 return ret;
306 #else
307 return -ENOSYS;
308 #endif
309 }
310
311 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
312 {
313 struct iwch_dev *rhp;
314 struct iwch_cq *chp;
315 enum t3_cq_opcode cq_op;
316 int err;
317 unsigned long flag;
318 u32 rptr;
319
320 chp = to_iwch_cq(ibcq);
321 rhp = chp->rhp;
322 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
323 cq_op = CQ_ARM_SE;
324 else
325 cq_op = CQ_ARM_AN;
326 if (chp->user_rptr_addr) {
327 if (get_user(rptr, chp->user_rptr_addr))
328 return -EFAULT;
329 spin_lock_irqsave(&chp->lock, flag);
330 chp->cq.rptr = rptr;
331 } else
332 spin_lock_irqsave(&chp->lock, flag);
333 PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
334 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
335 spin_unlock_irqrestore(&chp->lock, flag);
336 if (err < 0)
337 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
338 chp->cq.cqid);
339 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
340 err = 0;
341 return err;
342 }
343
344 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
345 {
346 int len = vma->vm_end - vma->vm_start;
347 u32 key = vma->vm_pgoff << PAGE_SHIFT;
348 struct cxio_rdev *rdev_p;
349 int ret = 0;
350 struct iwch_mm_entry *mm;
351 struct iwch_ucontext *ucontext;
352 u64 addr;
353
354 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
355 key, len);
356
357 if (vma->vm_start & (PAGE_SIZE-1)) {
358 return -EINVAL;
359 }
360
361 rdev_p = &(to_iwch_dev(context->device)->rdev);
362 ucontext = to_iwch_ucontext(context);
363
364 mm = remove_mmap(ucontext, key, len);
365 if (!mm)
366 return -EINVAL;
367 addr = mm->addr;
368 kfree(mm);
369
370 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
371 (addr < (rdev_p->rnic_info.udbell_physbase +
372 rdev_p->rnic_info.udbell_len))) {
373
374 /*
375 * Map T3 DB register.
376 */
377 if (vma->vm_flags & VM_READ) {
378 return -EPERM;
379 }
380
381 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
382 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
383 vma->vm_flags &= ~VM_MAYREAD;
384 ret = io_remap_pfn_range(vma, vma->vm_start,
385 addr >> PAGE_SHIFT,
386 len, vma->vm_page_prot);
387 } else {
388
389 /*
390 * Map WQ or CQ contig dma memory...
391 */
392 ret = remap_pfn_range(vma, vma->vm_start,
393 addr >> PAGE_SHIFT,
394 len, vma->vm_page_prot);
395 }
396
397 return ret;
398 }
399
400 static int iwch_deallocate_pd(struct ib_pd *pd)
401 {
402 struct iwch_dev *rhp;
403 struct iwch_pd *php;
404
405 php = to_iwch_pd(pd);
406 rhp = php->rhp;
407 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
408 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
409 kfree(php);
410 return 0;
411 }
412
413 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
414 struct ib_ucontext *context,
415 struct ib_udata *udata)
416 {
417 struct iwch_pd *php;
418 u32 pdid;
419 struct iwch_dev *rhp;
420
421 PDBG("%s ibdev %p\n", __func__, ibdev);
422 rhp = (struct iwch_dev *) ibdev;
423 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
424 if (!pdid)
425 return ERR_PTR(-EINVAL);
426 php = kzalloc(sizeof(*php), GFP_KERNEL);
427 if (!php) {
428 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
429 return ERR_PTR(-ENOMEM);
430 }
431 php->pdid = pdid;
432 php->rhp = rhp;
433 if (context) {
434 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
435 iwch_deallocate_pd(&php->ibpd);
436 return ERR_PTR(-EFAULT);
437 }
438 }
439 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
440 return &php->ibpd;
441 }
442
443 static int iwch_dereg_mr(struct ib_mr *ib_mr)
444 {
445 struct iwch_dev *rhp;
446 struct iwch_mr *mhp;
447 u32 mmid;
448
449 PDBG("%s ib_mr %p\n", __func__, ib_mr);
450 /* There can be no memory windows */
451 if (atomic_read(&ib_mr->usecnt))
452 return -EINVAL;
453
454 mhp = to_iwch_mr(ib_mr);
455 rhp = mhp->rhp;
456 mmid = mhp->attr.stag >> 8;
457 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
458 mhp->attr.pbl_addr);
459 iwch_free_pbl(mhp);
460 remove_handle(rhp, &rhp->mmidr, mmid);
461 if (mhp->kva)
462 kfree((void *) (unsigned long) mhp->kva);
463 if (mhp->umem)
464 ib_umem_release(mhp->umem);
465 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
466 kfree(mhp);
467 return 0;
468 }
469
470 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
471 struct ib_phys_buf *buffer_list,
472 int num_phys_buf,
473 int acc,
474 u64 *iova_start)
475 {
476 __be64 *page_list;
477 int shift;
478 u64 total_size;
479 int npages;
480 struct iwch_dev *rhp;
481 struct iwch_pd *php;
482 struct iwch_mr *mhp;
483 int ret;
484
485 PDBG("%s ib_pd %p\n", __func__, pd);
486 php = to_iwch_pd(pd);
487 rhp = php->rhp;
488
489 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
490 if (!mhp)
491 return ERR_PTR(-ENOMEM);
492
493 mhp->rhp = rhp;
494
495 /* First check that we have enough alignment */
496 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
497 ret = -EINVAL;
498 goto err;
499 }
500
501 if (num_phys_buf > 1 &&
502 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
503 ret = -EINVAL;
504 goto err;
505 }
506
507 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
508 &total_size, &npages, &shift, &page_list);
509 if (ret)
510 goto err;
511
512 ret = iwch_alloc_pbl(mhp, npages);
513 if (ret) {
514 kfree(page_list);
515 goto err_pbl;
516 }
517
518 ret = iwch_write_pbl(mhp, page_list, npages, 0);
519 kfree(page_list);
520 if (ret)
521 goto err_pbl;
522
523 mhp->attr.pdid = php->pdid;
524 mhp->attr.zbva = 0;
525
526 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
527 mhp->attr.va_fbo = *iova_start;
528 mhp->attr.page_size = shift - 12;
529
530 mhp->attr.len = (u32) total_size;
531 mhp->attr.pbl_size = npages;
532 ret = iwch_register_mem(rhp, php, mhp, shift);
533 if (ret)
534 goto err_pbl;
535
536 return &mhp->ibmr;
537
538 err_pbl:
539 iwch_free_pbl(mhp);
540
541 err:
542 kfree(mhp);
543 return ERR_PTR(ret);
544
545 }
546
547 static int iwch_reregister_phys_mem(struct ib_mr *mr,
548 int mr_rereg_mask,
549 struct ib_pd *pd,
550 struct ib_phys_buf *buffer_list,
551 int num_phys_buf,
552 int acc, u64 * iova_start)
553 {
554
555 struct iwch_mr mh, *mhp;
556 struct iwch_pd *php;
557 struct iwch_dev *rhp;
558 __be64 *page_list = NULL;
559 int shift = 0;
560 u64 total_size;
561 int npages;
562 int ret;
563
564 PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
565
566 /* There can be no memory windows */
567 if (atomic_read(&mr->usecnt))
568 return -EINVAL;
569
570 mhp = to_iwch_mr(mr);
571 rhp = mhp->rhp;
572 php = to_iwch_pd(mr->pd);
573
574 /* make sure we are on the same adapter */
575 if (rhp != php->rhp)
576 return -EINVAL;
577
578 memcpy(&mh, mhp, sizeof *mhp);
579
580 if (mr_rereg_mask & IB_MR_REREG_PD)
581 php = to_iwch_pd(pd);
582 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
583 mh.attr.perms = iwch_ib_to_tpt_access(acc);
584 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
585 ret = build_phys_page_list(buffer_list, num_phys_buf,
586 iova_start,
587 &total_size, &npages,
588 &shift, &page_list);
589 if (ret)
590 return ret;
591 }
592
593 ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
594 kfree(page_list);
595 if (ret) {
596 return ret;
597 }
598 if (mr_rereg_mask & IB_MR_REREG_PD)
599 mhp->attr.pdid = php->pdid;
600 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
601 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
602 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
603 mhp->attr.zbva = 0;
604 mhp->attr.va_fbo = *iova_start;
605 mhp->attr.page_size = shift - 12;
606 mhp->attr.len = (u32) total_size;
607 mhp->attr.pbl_size = npages;
608 }
609
610 return 0;
611 }
612
613
614 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
615 u64 virt, int acc, struct ib_udata *udata)
616 {
617 __be64 *pages;
618 int shift, n, len;
619 int i, j, k;
620 int err = 0;
621 struct ib_umem_chunk *chunk;
622 struct iwch_dev *rhp;
623 struct iwch_pd *php;
624 struct iwch_mr *mhp;
625 struct iwch_reg_user_mr_resp uresp;
626
627 PDBG("%s ib_pd %p\n", __func__, pd);
628
629 php = to_iwch_pd(pd);
630 rhp = php->rhp;
631 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
632 if (!mhp)
633 return ERR_PTR(-ENOMEM);
634
635 mhp->rhp = rhp;
636
637 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
638 if (IS_ERR(mhp->umem)) {
639 err = PTR_ERR(mhp->umem);
640 kfree(mhp);
641 return ERR_PTR(err);
642 }
643
644 shift = ffs(mhp->umem->page_size) - 1;
645
646 n = 0;
647 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
648 n += chunk->nents;
649
650 err = iwch_alloc_pbl(mhp, n);
651 if (err)
652 goto err;
653
654 pages = (__be64 *) __get_free_page(GFP_KERNEL);
655 if (!pages) {
656 err = -ENOMEM;
657 goto err_pbl;
658 }
659
660 i = n = 0;
661
662 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
663 for (j = 0; j < chunk->nmap; ++j) {
664 len = sg_dma_len(&chunk->page_list[j]) >> shift;
665 for (k = 0; k < len; ++k) {
666 pages[i++] = cpu_to_be64(sg_dma_address(
667 &chunk->page_list[j]) +
668 mhp->umem->page_size * k);
669 if (i == PAGE_SIZE / sizeof *pages) {
670 err = iwch_write_pbl(mhp, pages, i, n);
671 if (err)
672 goto pbl_done;
673 n += i;
674 i = 0;
675 }
676 }
677 }
678
679 if (i)
680 err = iwch_write_pbl(mhp, pages, i, n);
681
682 pbl_done:
683 free_page((unsigned long) pages);
684 if (err)
685 goto err_pbl;
686
687 mhp->attr.pdid = php->pdid;
688 mhp->attr.zbva = 0;
689 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
690 mhp->attr.va_fbo = virt;
691 mhp->attr.page_size = shift - 12;
692 mhp->attr.len = (u32) length;
693
694 err = iwch_register_mem(rhp, php, mhp, shift);
695 if (err)
696 goto err_pbl;
697
698 if (udata && !t3a_device(rhp)) {
699 uresp.pbl_addr = (mhp->attr.pbl_addr -
700 rhp->rdev.rnic_info.pbl_base) >> 3;
701 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
702 uresp.pbl_addr);
703
704 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
705 iwch_dereg_mr(&mhp->ibmr);
706 err = -EFAULT;
707 goto err;
708 }
709 }
710
711 return &mhp->ibmr;
712
713 err_pbl:
714 iwch_free_pbl(mhp);
715
716 err:
717 ib_umem_release(mhp->umem);
718 kfree(mhp);
719 return ERR_PTR(err);
720 }
721
722 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
723 {
724 struct ib_phys_buf bl;
725 u64 kva;
726 struct ib_mr *ibmr;
727
728 PDBG("%s ib_pd %p\n", __func__, pd);
729
730 /*
731 * T3 only supports 32 bits of size.
732 */
733 bl.size = 0xffffffff;
734 bl.addr = 0;
735 kva = 0;
736 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
737 return ibmr;
738 }
739
740 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
741 {
742 struct iwch_dev *rhp;
743 struct iwch_pd *php;
744 struct iwch_mw *mhp;
745 u32 mmid;
746 u32 stag = 0;
747 int ret;
748
749 php = to_iwch_pd(pd);
750 rhp = php->rhp;
751 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
752 if (!mhp)
753 return ERR_PTR(-ENOMEM);
754 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
755 if (ret) {
756 kfree(mhp);
757 return ERR_PTR(ret);
758 }
759 mhp->rhp = rhp;
760 mhp->attr.pdid = php->pdid;
761 mhp->attr.type = TPT_MW;
762 mhp->attr.stag = stag;
763 mmid = (stag) >> 8;
764 mhp->ibmw.rkey = stag;
765 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
766 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
767 kfree(mhp);
768 return ERR_PTR(-ENOMEM);
769 }
770 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
771 return &(mhp->ibmw);
772 }
773
774 static int iwch_dealloc_mw(struct ib_mw *mw)
775 {
776 struct iwch_dev *rhp;
777 struct iwch_mw *mhp;
778 u32 mmid;
779
780 mhp = to_iwch_mw(mw);
781 rhp = mhp->rhp;
782 mmid = (mw->rkey) >> 8;
783 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
784 remove_handle(rhp, &rhp->mmidr, mmid);
785 kfree(mhp);
786 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
787 return 0;
788 }
789
790 static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
791 {
792 struct iwch_dev *rhp;
793 struct iwch_pd *php;
794 struct iwch_mr *mhp;
795 u32 mmid;
796 u32 stag = 0;
797 int ret = 0;
798
799 php = to_iwch_pd(pd);
800 rhp = php->rhp;
801 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
802 if (!mhp)
803 goto err;
804
805 mhp->rhp = rhp;
806 ret = iwch_alloc_pbl(mhp, pbl_depth);
807 if (ret)
808 goto err1;
809 mhp->attr.pbl_size = pbl_depth;
810 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
811 mhp->attr.pbl_size, mhp->attr.pbl_addr);
812 if (ret)
813 goto err2;
814 mhp->attr.pdid = php->pdid;
815 mhp->attr.type = TPT_NON_SHARED_MR;
816 mhp->attr.stag = stag;
817 mhp->attr.state = 1;
818 mmid = (stag) >> 8;
819 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
820 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
821 goto err3;
822
823 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
824 return &(mhp->ibmr);
825 err3:
826 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
827 mhp->attr.pbl_addr);
828 err2:
829 iwch_free_pbl(mhp);
830 err1:
831 kfree(mhp);
832 err:
833 return ERR_PTR(ret);
834 }
835
836 static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
837 struct ib_device *device,
838 int page_list_len)
839 {
840 struct ib_fast_reg_page_list *page_list;
841
842 page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
843 GFP_KERNEL);
844 if (!page_list)
845 return ERR_PTR(-ENOMEM);
846
847 page_list->page_list = (u64 *)(page_list + 1);
848 page_list->max_page_list_len = page_list_len;
849
850 return page_list;
851 }
852
853 static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
854 {
855 kfree(page_list);
856 }
857
858 static int iwch_destroy_qp(struct ib_qp *ib_qp)
859 {
860 struct iwch_dev *rhp;
861 struct iwch_qp *qhp;
862 struct iwch_qp_attributes attrs;
863 struct iwch_ucontext *ucontext;
864
865 qhp = to_iwch_qp(ib_qp);
866 rhp = qhp->rhp;
867
868 attrs.next_state = IWCH_QP_STATE_ERROR;
869 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
870 wait_event(qhp->wait, !qhp->ep);
871
872 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
873
874 atomic_dec(&qhp->refcnt);
875 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
876
877 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
878 : NULL;
879 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
880 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
881
882 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
883 ib_qp, qhp->wq.qpid, qhp);
884 kfree(qhp);
885 return 0;
886 }
887
888 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
889 struct ib_qp_init_attr *attrs,
890 struct ib_udata *udata)
891 {
892 struct iwch_dev *rhp;
893 struct iwch_qp *qhp;
894 struct iwch_pd *php;
895 struct iwch_cq *schp;
896 struct iwch_cq *rchp;
897 struct iwch_create_qp_resp uresp;
898 int wqsize, sqsize, rqsize;
899 struct iwch_ucontext *ucontext;
900
901 PDBG("%s ib_pd %p\n", __func__, pd);
902 if (attrs->qp_type != IB_QPT_RC)
903 return ERR_PTR(-EINVAL);
904 php = to_iwch_pd(pd);
905 rhp = php->rhp;
906 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
907 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
908 if (!schp || !rchp)
909 return ERR_PTR(-EINVAL);
910
911 /* The RQT size must be # of entries + 1 rounded up to a power of two */
912 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
913 if (rqsize == attrs->cap.max_recv_wr)
914 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
915
916 /* T3 doesn't support RQT depth < 16 */
917 if (rqsize < 16)
918 rqsize = 16;
919
920 if (rqsize > T3_MAX_RQ_SIZE)
921 return ERR_PTR(-EINVAL);
922
923 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
924 return ERR_PTR(-EINVAL);
925
926 /*
927 * NOTE: The SQ and total WQ sizes don't need to be
928 * a power of two. However, all the code assumes
929 * they are. EG: Q_FREECNT() and friends.
930 */
931 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
932 wqsize = roundup_pow_of_two(rqsize + sqsize);
933
934 /*
935 * Kernel users need more wq space for fastreg WRs which can take
936 * 2 WR fragments.
937 */
938 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
939 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
940 wqsize = roundup_pow_of_two(rqsize +
941 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
942 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
943 wqsize, sqsize, rqsize);
944 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
945 if (!qhp)
946 return ERR_PTR(-ENOMEM);
947 qhp->wq.size_log2 = ilog2(wqsize);
948 qhp->wq.rq_size_log2 = ilog2(rqsize);
949 qhp->wq.sq_size_log2 = ilog2(sqsize);
950 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
951 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
952 kfree(qhp);
953 return ERR_PTR(-ENOMEM);
954 }
955
956 attrs->cap.max_recv_wr = rqsize - 1;
957 attrs->cap.max_send_wr = sqsize;
958 attrs->cap.max_inline_data = T3_MAX_INLINE;
959
960 qhp->rhp = rhp;
961 qhp->attr.pd = php->pdid;
962 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
963 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
964 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
965 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
966 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
967 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
968 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
969 qhp->attr.state = IWCH_QP_STATE_IDLE;
970 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
971
972 /*
973 * XXX - These don't get passed in from the openib user
974 * at create time. The CM sets them via a QP modify.
975 * Need to fix... I think the CM should
976 */
977 qhp->attr.enable_rdma_read = 1;
978 qhp->attr.enable_rdma_write = 1;
979 qhp->attr.enable_bind = 1;
980 qhp->attr.max_ord = 1;
981 qhp->attr.max_ird = 1;
982
983 spin_lock_init(&qhp->lock);
984 init_waitqueue_head(&qhp->wait);
985 atomic_set(&qhp->refcnt, 1);
986
987 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
988 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
989 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
990 kfree(qhp);
991 return ERR_PTR(-ENOMEM);
992 }
993
994 if (udata) {
995
996 struct iwch_mm_entry *mm1, *mm2;
997
998 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
999 if (!mm1) {
1000 iwch_destroy_qp(&qhp->ibqp);
1001 return ERR_PTR(-ENOMEM);
1002 }
1003
1004 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
1005 if (!mm2) {
1006 kfree(mm1);
1007 iwch_destroy_qp(&qhp->ibqp);
1008 return ERR_PTR(-ENOMEM);
1009 }
1010
1011 uresp.qpid = qhp->wq.qpid;
1012 uresp.size_log2 = qhp->wq.size_log2;
1013 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
1014 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
1015 spin_lock(&ucontext->mmap_lock);
1016 uresp.key = ucontext->key;
1017 ucontext->key += PAGE_SIZE;
1018 uresp.db_key = ucontext->key;
1019 ucontext->key += PAGE_SIZE;
1020 spin_unlock(&ucontext->mmap_lock);
1021 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
1022 kfree(mm1);
1023 kfree(mm2);
1024 iwch_destroy_qp(&qhp->ibqp);
1025 return ERR_PTR(-EFAULT);
1026 }
1027 mm1->key = uresp.key;
1028 mm1->addr = virt_to_phys(qhp->wq.queue);
1029 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1030 insert_mmap(ucontext, mm1);
1031 mm2->key = uresp.db_key;
1032 mm2->addr = qhp->wq.udb & PAGE_MASK;
1033 mm2->len = PAGE_SIZE;
1034 insert_mmap(ucontext, mm2);
1035 }
1036 qhp->ibqp.qp_num = qhp->wq.qpid;
1037 init_timer(&(qhp->timer));
1038 PDBG("%s sq_num_entries %d, rq_num_entries %d "
1039 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
1040 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
1041 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
1042 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
1043 return &qhp->ibqp;
1044 }
1045
1046 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1047 int attr_mask, struct ib_udata *udata)
1048 {
1049 struct iwch_dev *rhp;
1050 struct iwch_qp *qhp;
1051 enum iwch_qp_attr_mask mask = 0;
1052 struct iwch_qp_attributes attrs;
1053
1054 PDBG("%s ib_qp %p\n", __func__, ibqp);
1055
1056 /* iwarp does not support the RTR state */
1057 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1058 attr_mask &= ~IB_QP_STATE;
1059
1060 /* Make sure we still have something left to do */
1061 if (!attr_mask)
1062 return 0;
1063
1064 memset(&attrs, 0, sizeof attrs);
1065 qhp = to_iwch_qp(ibqp);
1066 rhp = qhp->rhp;
1067
1068 attrs.next_state = iwch_convert_state(attr->qp_state);
1069 attrs.enable_rdma_read = (attr->qp_access_flags &
1070 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1071 attrs.enable_rdma_write = (attr->qp_access_flags &
1072 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1073 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1074
1075
1076 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1077 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1078 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1079 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1080 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1081
1082 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1083 }
1084
1085 void iwch_qp_add_ref(struct ib_qp *qp)
1086 {
1087 PDBG("%s ib_qp %p\n", __func__, qp);
1088 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1089 }
1090
1091 void iwch_qp_rem_ref(struct ib_qp *qp)
1092 {
1093 PDBG("%s ib_qp %p\n", __func__, qp);
1094 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1095 wake_up(&(to_iwch_qp(qp)->wait));
1096 }
1097
1098 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1099 {
1100 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1101 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1102 }
1103
1104
1105 static int iwch_query_pkey(struct ib_device *ibdev,
1106 u8 port, u16 index, u16 * pkey)
1107 {
1108 PDBG("%s ibdev %p\n", __func__, ibdev);
1109 *pkey = 0;
1110 return 0;
1111 }
1112
1113 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1114 int index, union ib_gid *gid)
1115 {
1116 struct iwch_dev *dev;
1117
1118 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
1119 __func__, ibdev, port, index, gid);
1120 dev = to_iwch_dev(ibdev);
1121 BUG_ON(port == 0 || port > 2);
1122 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1123 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1124 return 0;
1125 }
1126
1127 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1128 {
1129 struct ethtool_drvinfo info;
1130 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1131 char *cp, *next;
1132 unsigned fw_maj, fw_min, fw_mic;
1133
1134 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1135
1136 next = info.fw_version + 1;
1137 cp = strsep(&next, ".");
1138 sscanf(cp, "%i", &fw_maj);
1139 cp = strsep(&next, ".");
1140 sscanf(cp, "%i", &fw_min);
1141 cp = strsep(&next, ".");
1142 sscanf(cp, "%i", &fw_mic);
1143
1144 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1145 (fw_mic & 0xffff);
1146 }
1147
1148 static int iwch_query_device(struct ib_device *ibdev,
1149 struct ib_device_attr *props)
1150 {
1151
1152 struct iwch_dev *dev;
1153 PDBG("%s ibdev %p\n", __func__, ibdev);
1154
1155 dev = to_iwch_dev(ibdev);
1156 memset(props, 0, sizeof *props);
1157 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1158 props->hw_ver = dev->rdev.t3cdev_p->type;
1159 props->fw_ver = fw_vers_string_to_u64(dev);
1160 props->device_cap_flags = dev->device_cap_flags;
1161 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1162 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1163 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1164 props->max_mr_size = dev->attr.max_mr_size;
1165 props->max_qp = dev->attr.max_qps;
1166 props->max_qp_wr = dev->attr.max_wrs;
1167 props->max_sge = dev->attr.max_sge_per_wr;
1168 props->max_sge_rd = 1;
1169 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1170 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1171 props->max_cq = dev->attr.max_cqs;
1172 props->max_cqe = dev->attr.max_cqes_per_cq;
1173 props->max_mr = dev->attr.max_mem_regs;
1174 props->max_pd = dev->attr.max_pds;
1175 props->local_ca_ack_delay = 0;
1176 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1177
1178 return 0;
1179 }
1180
1181 static int iwch_query_port(struct ib_device *ibdev,
1182 u8 port, struct ib_port_attr *props)
1183 {
1184 struct iwch_dev *dev;
1185 struct net_device *netdev;
1186 struct in_device *inetdev;
1187
1188 PDBG("%s ibdev %p\n", __func__, ibdev);
1189
1190 dev = to_iwch_dev(ibdev);
1191 netdev = dev->rdev.port_info.lldevs[port-1];
1192
1193 memset(props, 0, sizeof(struct ib_port_attr));
1194 props->max_mtu = IB_MTU_4096;
1195 if (netdev->mtu >= 4096)
1196 props->active_mtu = IB_MTU_4096;
1197 else if (netdev->mtu >= 2048)
1198 props->active_mtu = IB_MTU_2048;
1199 else if (netdev->mtu >= 1024)
1200 props->active_mtu = IB_MTU_1024;
1201 else if (netdev->mtu >= 512)
1202 props->active_mtu = IB_MTU_512;
1203 else
1204 props->active_mtu = IB_MTU_256;
1205
1206 if (!netif_carrier_ok(netdev))
1207 props->state = IB_PORT_DOWN;
1208 else {
1209 inetdev = in_dev_get(netdev);
1210 if (inetdev) {
1211 if (inetdev->ifa_list)
1212 props->state = IB_PORT_ACTIVE;
1213 else
1214 props->state = IB_PORT_INIT;
1215 in_dev_put(inetdev);
1216 } else
1217 props->state = IB_PORT_INIT;
1218 }
1219
1220 props->port_cap_flags =
1221 IB_PORT_CM_SUP |
1222 IB_PORT_SNMP_TUNNEL_SUP |
1223 IB_PORT_REINIT_SUP |
1224 IB_PORT_DEVICE_MGMT_SUP |
1225 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1226 props->gid_tbl_len = 1;
1227 props->pkey_tbl_len = 1;
1228 props->active_width = 2;
1229 props->active_speed = 2;
1230 props->max_msg_sz = -1;
1231
1232 return 0;
1233 }
1234
1235 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1236 char *buf)
1237 {
1238 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1239 ibdev.dev);
1240 PDBG("%s dev 0x%p\n", __func__, dev);
1241 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1242 }
1243
1244 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
1245 {
1246 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1247 ibdev.dev);
1248 struct ethtool_drvinfo info;
1249 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1250
1251 PDBG("%s dev 0x%p\n", __func__, dev);
1252 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1253 return sprintf(buf, "%s\n", info.fw_version);
1254 }
1255
1256 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1257 char *buf)
1258 {
1259 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1260 ibdev.dev);
1261 struct ethtool_drvinfo info;
1262 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1263
1264 PDBG("%s dev 0x%p\n", __func__, dev);
1265 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1266 return sprintf(buf, "%s\n", info.driver);
1267 }
1268
1269 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1270 char *buf)
1271 {
1272 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1273 ibdev.dev);
1274 PDBG("%s dev 0x%p\n", __func__, dev);
1275 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1276 iwch_dev->rdev.rnic_info.pdev->device);
1277 }
1278
1279 static int iwch_get_mib(struct ib_device *ibdev,
1280 union rdma_protocol_stats *stats)
1281 {
1282 struct iwch_dev *dev;
1283 struct tp_mib_stats m;
1284 int ret;
1285
1286 PDBG("%s ibdev %p\n", __func__, ibdev);
1287 dev = to_iwch_dev(ibdev);
1288 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1289 if (ret)
1290 return -ENOSYS;
1291
1292 memset(stats, 0, sizeof *stats);
1293 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1294 m.ipInReceive_lo;
1295 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1296 m.ipInHdrErrors_lo;
1297 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1298 m.ipInAddrErrors_lo;
1299 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1300 m.ipInUnknownProtos_lo;
1301 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1302 m.ipInDiscards_lo;
1303 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1304 m.ipInDelivers_lo;
1305 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1306 m.ipOutRequests_lo;
1307 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1308 m.ipOutDiscards_lo;
1309 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1310 m.ipOutNoRoutes_lo;
1311 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1312 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1313 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1314 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1315 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1316 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1317 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1318 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1319 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1320 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1321 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1322 m.tcpInSegs_lo;
1323 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1324 m.tcpOutSegs_lo;
1325 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1326 m.tcpRetransSeg_lo;
1327 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1328 m.tcpInErrs_lo;
1329 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1330 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1331 return 0;
1332 }
1333
1334 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1335 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1336 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1337 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1338
1339 static struct device_attribute *iwch_class_attributes[] = {
1340 &dev_attr_hw_rev,
1341 &dev_attr_fw_ver,
1342 &dev_attr_hca_type,
1343 &dev_attr_board_id,
1344 };
1345
1346 int iwch_register_device(struct iwch_dev *dev)
1347 {
1348 int ret;
1349 int i;
1350
1351 PDBG("%s iwch_dev %p\n", __func__, dev);
1352 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1353 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1354 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1355 dev->ibdev.owner = THIS_MODULE;
1356 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1357 IB_DEVICE_MEM_WINDOW |
1358 IB_DEVICE_MEM_MGT_EXTENSIONS;
1359
1360 /* cxgb3 supports STag 0. */
1361 dev->ibdev.local_dma_lkey = 0;
1362
1363 dev->ibdev.uverbs_cmd_mask =
1364 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1365 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1366 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1367 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1368 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1369 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1370 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1371 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1372 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1373 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1374 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1375 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1376 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1377 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1378 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1379 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1380 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1381 dev->ibdev.node_type = RDMA_NODE_RNIC;
1382 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1383 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1384 dev->ibdev.num_comp_vectors = 1;
1385 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1386 dev->ibdev.query_device = iwch_query_device;
1387 dev->ibdev.query_port = iwch_query_port;
1388 dev->ibdev.query_pkey = iwch_query_pkey;
1389 dev->ibdev.query_gid = iwch_query_gid;
1390 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1391 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1392 dev->ibdev.mmap = iwch_mmap;
1393 dev->ibdev.alloc_pd = iwch_allocate_pd;
1394 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1395 dev->ibdev.create_ah = iwch_ah_create;
1396 dev->ibdev.destroy_ah = iwch_ah_destroy;
1397 dev->ibdev.create_qp = iwch_create_qp;
1398 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1399 dev->ibdev.destroy_qp = iwch_destroy_qp;
1400 dev->ibdev.create_cq = iwch_create_cq;
1401 dev->ibdev.destroy_cq = iwch_destroy_cq;
1402 dev->ibdev.resize_cq = iwch_resize_cq;
1403 dev->ibdev.poll_cq = iwch_poll_cq;
1404 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1405 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1406 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1407 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1408 dev->ibdev.dereg_mr = iwch_dereg_mr;
1409 dev->ibdev.alloc_mw = iwch_alloc_mw;
1410 dev->ibdev.bind_mw = iwch_bind_mw;
1411 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1412 dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
1413 dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1414 dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
1415 dev->ibdev.attach_mcast = iwch_multicast_attach;
1416 dev->ibdev.detach_mcast = iwch_multicast_detach;
1417 dev->ibdev.process_mad = iwch_process_mad;
1418 dev->ibdev.req_notify_cq = iwch_arm_cq;
1419 dev->ibdev.post_send = iwch_post_send;
1420 dev->ibdev.post_recv = iwch_post_receive;
1421 dev->ibdev.get_protocol_stats = iwch_get_mib;
1422 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
1423
1424 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1425 if (!dev->ibdev.iwcm)
1426 return -ENOMEM;
1427
1428 dev->ibdev.iwcm->connect = iwch_connect;
1429 dev->ibdev.iwcm->accept = iwch_accept_cr;
1430 dev->ibdev.iwcm->reject = iwch_reject_cr;
1431 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1432 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1433 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1434 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1435 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1436
1437 ret = ib_register_device(&dev->ibdev, NULL);
1438 if (ret)
1439 goto bail1;
1440
1441 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1442 ret = device_create_file(&dev->ibdev.dev,
1443 iwch_class_attributes[i]);
1444 if (ret) {
1445 goto bail2;
1446 }
1447 }
1448 return 0;
1449 bail2:
1450 ib_unregister_device(&dev->ibdev);
1451 bail1:
1452 kfree(dev->ibdev.iwcm);
1453 return ret;
1454 }
1455
1456 void iwch_unregister_device(struct iwch_dev *dev)
1457 {
1458 int i;
1459
1460 PDBG("%s iwch_dev %p\n", __func__, dev);
1461 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1462 device_remove_file(&dev->ibdev.dev,
1463 iwch_class_attributes[i]);
1464 ib_unregister_device(&dev->ibdev);
1465 kfree(dev->ibdev.iwcm);
1466 return;
1467 }
linux-next