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Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
1 /*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/device.h>
35 #include <linux/netdevice.h>
36 #include <linux/etherdevice.h>
37 #include <linux/delay.h>
38 #include <linux/errno.h>
39 #include <linux/list.h>
40 #include <linux/sched.h>
41 #include <linux/spinlock.h>
42 #include <linux/ethtool.h>
43 #include <linux/rtnetlink.h>
44 #include <linux/inetdevice.h>
45
46 #include <asm/io.h>
47 #include <asm/irq.h>
48 #include <asm/byteorder.h>
49
50 #include <rdma/iw_cm.h>
51 #include <rdma/ib_verbs.h>
52 #include <rdma/ib_smi.h>
53 #include <rdma/ib_umem.h>
54 #include <rdma/ib_user_verbs.h>
55
56 #include "cxio_hal.h"
57 #include "iwch.h"
58 #include "iwch_provider.h"
59 #include "iwch_cm.h"
60 #include "iwch_user.h"
61 #include "common.h"
62
63 static int iwch_modify_port(struct ib_device *ibdev,
64 u8 port, int port_modify_mask,
65 struct ib_port_modify *props)
66 {
67 return -ENOSYS;
68 }
69
70 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
71 struct ib_ah_attr *ah_attr)
72 {
73 return ERR_PTR(-ENOSYS);
74 }
75
76 static int iwch_ah_destroy(struct ib_ah *ah)
77 {
78 return -ENOSYS;
79 }
80
81 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
82 {
83 return -ENOSYS;
84 }
85
86 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
87 {
88 return -ENOSYS;
89 }
90
91 static int iwch_process_mad(struct ib_device *ibdev,
92 int mad_flags,
93 u8 port_num,
94 struct ib_wc *in_wc,
95 struct ib_grh *in_grh,
96 struct ib_mad *in_mad, struct ib_mad *out_mad)
97 {
98 return -ENOSYS;
99 }
100
101 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
102 {
103 struct iwch_dev *rhp = to_iwch_dev(context->device);
104 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
105 struct iwch_mm_entry *mm, *tmp;
106
107 PDBG("%s context %p\n", __func__, context);
108 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
109 kfree(mm);
110 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
111 kfree(ucontext);
112 return 0;
113 }
114
115 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
116 struct ib_udata *udata)
117 {
118 struct iwch_ucontext *context;
119 struct iwch_dev *rhp = to_iwch_dev(ibdev);
120
121 PDBG("%s ibdev %p\n", __func__, ibdev);
122 context = kzalloc(sizeof(*context), GFP_KERNEL);
123 if (!context)
124 return ERR_PTR(-ENOMEM);
125 cxio_init_ucontext(&rhp->rdev, &context->uctx);
126 INIT_LIST_HEAD(&context->mmaps);
127 spin_lock_init(&context->mmap_lock);
128 return &context->ibucontext;
129 }
130
131 static int iwch_destroy_cq(struct ib_cq *ib_cq)
132 {
133 struct iwch_cq *chp;
134
135 PDBG("%s ib_cq %p\n", __func__, ib_cq);
136 chp = to_iwch_cq(ib_cq);
137
138 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
139 atomic_dec(&chp->refcnt);
140 wait_event(chp->wait, !atomic_read(&chp->refcnt));
141
142 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
143 kfree(chp);
144 return 0;
145 }
146
147 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
148 struct ib_ucontext *ib_context,
149 struct ib_udata *udata)
150 {
151 struct iwch_dev *rhp;
152 struct iwch_cq *chp;
153 struct iwch_create_cq_resp uresp;
154 struct iwch_create_cq_req ureq;
155 struct iwch_ucontext *ucontext = NULL;
156
157 PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
158 rhp = to_iwch_dev(ibdev);
159 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
160 if (!chp)
161 return ERR_PTR(-ENOMEM);
162
163 if (ib_context) {
164 ucontext = to_iwch_ucontext(ib_context);
165 if (!t3a_device(rhp)) {
166 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
167 kfree(chp);
168 return ERR_PTR(-EFAULT);
169 }
170 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
171 }
172 }
173
174 if (t3a_device(rhp)) {
175
176 /*
177 * T3A: Add some fluff to handle extra CQEs inserted
178 * for various errors.
179 * Additional CQE possibilities:
180 * TERMINATE,
181 * incoming RDMA WRITE Failures
182 * incoming RDMA READ REQUEST FAILUREs
183 * NOTE: We cannot ensure the CQ won't overflow.
184 */
185 entries += 16;
186 }
187 entries = roundup_pow_of_two(entries);
188 chp->cq.size_log2 = ilog2(entries);
189
190 if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
191 kfree(chp);
192 return ERR_PTR(-ENOMEM);
193 }
194 chp->rhp = rhp;
195 chp->ibcq.cqe = 1 << chp->cq.size_log2;
196 spin_lock_init(&chp->lock);
197 atomic_set(&chp->refcnt, 1);
198 init_waitqueue_head(&chp->wait);
199 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
200 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
201 kfree(chp);
202 return ERR_PTR(-ENOMEM);
203 }
204
205 if (ucontext) {
206 struct iwch_mm_entry *mm;
207
208 mm = kmalloc(sizeof *mm, GFP_KERNEL);
209 if (!mm) {
210 iwch_destroy_cq(&chp->ibcq);
211 return ERR_PTR(-ENOMEM);
212 }
213 uresp.cqid = chp->cq.cqid;
214 uresp.size_log2 = chp->cq.size_log2;
215 spin_lock(&ucontext->mmap_lock);
216 uresp.key = ucontext->key;
217 ucontext->key += PAGE_SIZE;
218 spin_unlock(&ucontext->mmap_lock);
219 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
220 kfree(mm);
221 iwch_destroy_cq(&chp->ibcq);
222 return ERR_PTR(-EFAULT);
223 }
224 mm->key = uresp.key;
225 mm->addr = virt_to_phys(chp->cq.queue);
226 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
227 sizeof (struct t3_cqe));
228 insert_mmap(ucontext, mm);
229 }
230 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
231 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
232 (unsigned long long) chp->cq.dma_addr);
233 return &chp->ibcq;
234 }
235
236 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
237 {
238 #ifdef notyet
239 struct iwch_cq *chp = to_iwch_cq(cq);
240 struct t3_cq oldcq, newcq;
241 int ret;
242
243 PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
244
245 /* We don't downsize... */
246 if (cqe <= cq->cqe)
247 return 0;
248
249 /* create new t3_cq with new size */
250 cqe = roundup_pow_of_two(cqe+1);
251 newcq.size_log2 = ilog2(cqe);
252
253 /* Dont allow resize to less than the current wce count */
254 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
255 return -ENOMEM;
256 }
257
258 /* Quiesce all QPs using this CQ */
259 ret = iwch_quiesce_qps(chp);
260 if (ret) {
261 return ret;
262 }
263
264 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
265 if (ret) {
266 return ret;
267 }
268
269 /* copy CQEs */
270 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
271 sizeof(struct t3_cqe));
272
273 /* old iwch_qp gets new t3_cq but keeps old cqid */
274 oldcq = chp->cq;
275 chp->cq = newcq;
276 chp->cq.cqid = oldcq.cqid;
277
278 /* resize new t3_cq to update the HW context */
279 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
280 if (ret) {
281 chp->cq = oldcq;
282 return ret;
283 }
284 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
285
286 /* destroy old t3_cq */
287 oldcq.cqid = newcq.cqid;
288 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
289 if (ret) {
290 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
291 __func__, ret);
292 }
293
294 /* add user hooks here */
295
296 /* resume qps */
297 ret = iwch_resume_qps(chp);
298 return ret;
299 #else
300 return -ENOSYS;
301 #endif
302 }
303
304 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
305 {
306 struct iwch_dev *rhp;
307 struct iwch_cq *chp;
308 enum t3_cq_opcode cq_op;
309 int err;
310 unsigned long flag;
311 u32 rptr;
312
313 chp = to_iwch_cq(ibcq);
314 rhp = chp->rhp;
315 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
316 cq_op = CQ_ARM_SE;
317 else
318 cq_op = CQ_ARM_AN;
319 if (chp->user_rptr_addr) {
320 if (get_user(rptr, chp->user_rptr_addr))
321 return -EFAULT;
322 spin_lock_irqsave(&chp->lock, flag);
323 chp->cq.rptr = rptr;
324 } else
325 spin_lock_irqsave(&chp->lock, flag);
326 PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
327 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
328 spin_unlock_irqrestore(&chp->lock, flag);
329 if (err < 0)
330 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
331 chp->cq.cqid);
332 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
333 err = 0;
334 return err;
335 }
336
337 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
338 {
339 int len = vma->vm_end - vma->vm_start;
340 u32 key = vma->vm_pgoff << PAGE_SHIFT;
341 struct cxio_rdev *rdev_p;
342 int ret = 0;
343 struct iwch_mm_entry *mm;
344 struct iwch_ucontext *ucontext;
345 u64 addr;
346
347 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
348 key, len);
349
350 if (vma->vm_start & (PAGE_SIZE-1)) {
351 return -EINVAL;
352 }
353
354 rdev_p = &(to_iwch_dev(context->device)->rdev);
355 ucontext = to_iwch_ucontext(context);
356
357 mm = remove_mmap(ucontext, key, len);
358 if (!mm)
359 return -EINVAL;
360 addr = mm->addr;
361 kfree(mm);
362
363 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
364 (addr < (rdev_p->rnic_info.udbell_physbase +
365 rdev_p->rnic_info.udbell_len))) {
366
367 /*
368 * Map T3 DB register.
369 */
370 if (vma->vm_flags & VM_READ) {
371 return -EPERM;
372 }
373
374 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
375 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
376 vma->vm_flags &= ~VM_MAYREAD;
377 ret = io_remap_pfn_range(vma, vma->vm_start,
378 addr >> PAGE_SHIFT,
379 len, vma->vm_page_prot);
380 } else {
381
382 /*
383 * Map WQ or CQ contig dma memory...
384 */
385 ret = remap_pfn_range(vma, vma->vm_start,
386 addr >> PAGE_SHIFT,
387 len, vma->vm_page_prot);
388 }
389
390 return ret;
391 }
392
393 static int iwch_deallocate_pd(struct ib_pd *pd)
394 {
395 struct iwch_dev *rhp;
396 struct iwch_pd *php;
397
398 php = to_iwch_pd(pd);
399 rhp = php->rhp;
400 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
401 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
402 kfree(php);
403 return 0;
404 }
405
406 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
407 struct ib_ucontext *context,
408 struct ib_udata *udata)
409 {
410 struct iwch_pd *php;
411 u32 pdid;
412 struct iwch_dev *rhp;
413
414 PDBG("%s ibdev %p\n", __func__, ibdev);
415 rhp = (struct iwch_dev *) ibdev;
416 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
417 if (!pdid)
418 return ERR_PTR(-EINVAL);
419 php = kzalloc(sizeof(*php), GFP_KERNEL);
420 if (!php) {
421 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
422 return ERR_PTR(-ENOMEM);
423 }
424 php->pdid = pdid;
425 php->rhp = rhp;
426 if (context) {
427 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
428 iwch_deallocate_pd(&php->ibpd);
429 return ERR_PTR(-EFAULT);
430 }
431 }
432 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
433 return &php->ibpd;
434 }
435
436 static int iwch_dereg_mr(struct ib_mr *ib_mr)
437 {
438 struct iwch_dev *rhp;
439 struct iwch_mr *mhp;
440 u32 mmid;
441
442 PDBG("%s ib_mr %p\n", __func__, ib_mr);
443 /* There can be no memory windows */
444 if (atomic_read(&ib_mr->usecnt))
445 return -EINVAL;
446
447 mhp = to_iwch_mr(ib_mr);
448 rhp = mhp->rhp;
449 mmid = mhp->attr.stag >> 8;
450 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
451 mhp->attr.pbl_addr);
452 iwch_free_pbl(mhp);
453 remove_handle(rhp, &rhp->mmidr, mmid);
454 if (mhp->kva)
455 kfree((void *) (unsigned long) mhp->kva);
456 if (mhp->umem)
457 ib_umem_release(mhp->umem);
458 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
459 kfree(mhp);
460 return 0;
461 }
462
463 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
464 struct ib_phys_buf *buffer_list,
465 int num_phys_buf,
466 int acc,
467 u64 *iova_start)
468 {
469 __be64 *page_list;
470 int shift;
471 u64 total_size;
472 int npages;
473 struct iwch_dev *rhp;
474 struct iwch_pd *php;
475 struct iwch_mr *mhp;
476 int ret;
477
478 PDBG("%s ib_pd %p\n", __func__, pd);
479 php = to_iwch_pd(pd);
480 rhp = php->rhp;
481
482 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
483 if (!mhp)
484 return ERR_PTR(-ENOMEM);
485
486 mhp->rhp = rhp;
487
488 /* First check that we have enough alignment */
489 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
490 ret = -EINVAL;
491 goto err;
492 }
493
494 if (num_phys_buf > 1 &&
495 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
496 ret = -EINVAL;
497 goto err;
498 }
499
500 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
501 &total_size, &npages, &shift, &page_list);
502 if (ret)
503 goto err;
504
505 ret = iwch_alloc_pbl(mhp, npages);
506 if (ret) {
507 kfree(page_list);
508 goto err_pbl;
509 }
510
511 ret = iwch_write_pbl(mhp, page_list, npages, 0);
512 kfree(page_list);
513 if (ret)
514 goto err_pbl;
515
516 mhp->attr.pdid = php->pdid;
517 mhp->attr.zbva = 0;
518
519 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
520 mhp->attr.va_fbo = *iova_start;
521 mhp->attr.page_size = shift - 12;
522
523 mhp->attr.len = (u32) total_size;
524 mhp->attr.pbl_size = npages;
525 ret = iwch_register_mem(rhp, php, mhp, shift);
526 if (ret)
527 goto err_pbl;
528
529 return &mhp->ibmr;
530
531 err_pbl:
532 iwch_free_pbl(mhp);
533
534 err:
535 kfree(mhp);
536 return ERR_PTR(ret);
537
538 }
539
540 static int iwch_reregister_phys_mem(struct ib_mr *mr,
541 int mr_rereg_mask,
542 struct ib_pd *pd,
543 struct ib_phys_buf *buffer_list,
544 int num_phys_buf,
545 int acc, u64 * iova_start)
546 {
547
548 struct iwch_mr mh, *mhp;
549 struct iwch_pd *php;
550 struct iwch_dev *rhp;
551 __be64 *page_list = NULL;
552 int shift = 0;
553 u64 total_size;
554 int npages;
555 int ret;
556
557 PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
558
559 /* There can be no memory windows */
560 if (atomic_read(&mr->usecnt))
561 return -EINVAL;
562
563 mhp = to_iwch_mr(mr);
564 rhp = mhp->rhp;
565 php = to_iwch_pd(mr->pd);
566
567 /* make sure we are on the same adapter */
568 if (rhp != php->rhp)
569 return -EINVAL;
570
571 memcpy(&mh, mhp, sizeof *mhp);
572
573 if (mr_rereg_mask & IB_MR_REREG_PD)
574 php = to_iwch_pd(pd);
575 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
576 mh.attr.perms = iwch_ib_to_tpt_access(acc);
577 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
578 ret = build_phys_page_list(buffer_list, num_phys_buf,
579 iova_start,
580 &total_size, &npages,
581 &shift, &page_list);
582 if (ret)
583 return ret;
584 }
585
586 ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
587 kfree(page_list);
588 if (ret) {
589 return ret;
590 }
591 if (mr_rereg_mask & IB_MR_REREG_PD)
592 mhp->attr.pdid = php->pdid;
593 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
594 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
595 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
596 mhp->attr.zbva = 0;
597 mhp->attr.va_fbo = *iova_start;
598 mhp->attr.page_size = shift - 12;
599 mhp->attr.len = (u32) total_size;
600 mhp->attr.pbl_size = npages;
601 }
602
603 return 0;
604 }
605
606
607 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
608 u64 virt, int acc, struct ib_udata *udata)
609 {
610 __be64 *pages;
611 int shift, n, len;
612 int i, j, k;
613 int err = 0;
614 struct ib_umem_chunk *chunk;
615 struct iwch_dev *rhp;
616 struct iwch_pd *php;
617 struct iwch_mr *mhp;
618 struct iwch_reg_user_mr_resp uresp;
619
620 PDBG("%s ib_pd %p\n", __func__, pd);
621
622 php = to_iwch_pd(pd);
623 rhp = php->rhp;
624 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
625 if (!mhp)
626 return ERR_PTR(-ENOMEM);
627
628 mhp->rhp = rhp;
629
630 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
631 if (IS_ERR(mhp->umem)) {
632 err = PTR_ERR(mhp->umem);
633 kfree(mhp);
634 return ERR_PTR(err);
635 }
636
637 shift = ffs(mhp->umem->page_size) - 1;
638
639 n = 0;
640 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
641 n += chunk->nents;
642
643 err = iwch_alloc_pbl(mhp, n);
644 if (err)
645 goto err;
646
647 pages = (__be64 *) __get_free_page(GFP_KERNEL);
648 if (!pages) {
649 err = -ENOMEM;
650 goto err_pbl;
651 }
652
653 i = n = 0;
654
655 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
656 for (j = 0; j < chunk->nmap; ++j) {
657 len = sg_dma_len(&chunk->page_list[j]) >> shift;
658 for (k = 0; k < len; ++k) {
659 pages[i++] = cpu_to_be64(sg_dma_address(
660 &chunk->page_list[j]) +
661 mhp->umem->page_size * k);
662 if (i == PAGE_SIZE / sizeof *pages) {
663 err = iwch_write_pbl(mhp, pages, i, n);
664 if (err)
665 goto pbl_done;
666 n += i;
667 i = 0;
668 }
669 }
670 }
671
672 if (i)
673 err = iwch_write_pbl(mhp, pages, i, n);
674
675 pbl_done:
676 free_page((unsigned long) pages);
677 if (err)
678 goto err_pbl;
679
680 mhp->attr.pdid = php->pdid;
681 mhp->attr.zbva = 0;
682 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
683 mhp->attr.va_fbo = virt;
684 mhp->attr.page_size = shift - 12;
685 mhp->attr.len = (u32) length;
686
687 err = iwch_register_mem(rhp, php, mhp, shift);
688 if (err)
689 goto err_pbl;
690
691 if (udata && !t3a_device(rhp)) {
692 uresp.pbl_addr = (mhp->attr.pbl_addr -
693 rhp->rdev.rnic_info.pbl_base) >> 3;
694 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
695 uresp.pbl_addr);
696
697 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
698 iwch_dereg_mr(&mhp->ibmr);
699 err = -EFAULT;
700 goto err;
701 }
702 }
703
704 return &mhp->ibmr;
705
706 err_pbl:
707 iwch_free_pbl(mhp);
708
709 err:
710 ib_umem_release(mhp->umem);
711 kfree(mhp);
712 return ERR_PTR(err);
713 }
714
715 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
716 {
717 struct ib_phys_buf bl;
718 u64 kva;
719 struct ib_mr *ibmr;
720
721 PDBG("%s ib_pd %p\n", __func__, pd);
722
723 /*
724 * T3 only supports 32 bits of size.
725 */
726 bl.size = 0xffffffff;
727 bl.addr = 0;
728 kva = 0;
729 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
730 return ibmr;
731 }
732
733 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
734 {
735 struct iwch_dev *rhp;
736 struct iwch_pd *php;
737 struct iwch_mw *mhp;
738 u32 mmid;
739 u32 stag = 0;
740 int ret;
741
742 php = to_iwch_pd(pd);
743 rhp = php->rhp;
744 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
745 if (!mhp)
746 return ERR_PTR(-ENOMEM);
747 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
748 if (ret) {
749 kfree(mhp);
750 return ERR_PTR(ret);
751 }
752 mhp->rhp = rhp;
753 mhp->attr.pdid = php->pdid;
754 mhp->attr.type = TPT_MW;
755 mhp->attr.stag = stag;
756 mmid = (stag) >> 8;
757 mhp->ibmw.rkey = stag;
758 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
759 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
760 kfree(mhp);
761 return ERR_PTR(-ENOMEM);
762 }
763 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
764 return &(mhp->ibmw);
765 }
766
767 static int iwch_dealloc_mw(struct ib_mw *mw)
768 {
769 struct iwch_dev *rhp;
770 struct iwch_mw *mhp;
771 u32 mmid;
772
773 mhp = to_iwch_mw(mw);
774 rhp = mhp->rhp;
775 mmid = (mw->rkey) >> 8;
776 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
777 remove_handle(rhp, &rhp->mmidr, mmid);
778 kfree(mhp);
779 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
780 return 0;
781 }
782
783 static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
784 {
785 struct iwch_dev *rhp;
786 struct iwch_pd *php;
787 struct iwch_mr *mhp;
788 u32 mmid;
789 u32 stag = 0;
790 int ret = 0;
791
792 php = to_iwch_pd(pd);
793 rhp = php->rhp;
794 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
795 if (!mhp)
796 goto err;
797
798 mhp->rhp = rhp;
799 ret = iwch_alloc_pbl(mhp, pbl_depth);
800 if (ret)
801 goto err1;
802 mhp->attr.pbl_size = pbl_depth;
803 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
804 mhp->attr.pbl_size, mhp->attr.pbl_addr);
805 if (ret)
806 goto err2;
807 mhp->attr.pdid = php->pdid;
808 mhp->attr.type = TPT_NON_SHARED_MR;
809 mhp->attr.stag = stag;
810 mhp->attr.state = 1;
811 mmid = (stag) >> 8;
812 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
813 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
814 goto err3;
815
816 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
817 return &(mhp->ibmr);
818 err3:
819 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
820 mhp->attr.pbl_addr);
821 err2:
822 iwch_free_pbl(mhp);
823 err1:
824 kfree(mhp);
825 err:
826 return ERR_PTR(ret);
827 }
828
829 static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
830 struct ib_device *device,
831 int page_list_len)
832 {
833 struct ib_fast_reg_page_list *page_list;
834
835 page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
836 GFP_KERNEL);
837 if (!page_list)
838 return ERR_PTR(-ENOMEM);
839
840 page_list->page_list = (u64 *)(page_list + 1);
841 page_list->max_page_list_len = page_list_len;
842
843 return page_list;
844 }
845
846 static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
847 {
848 kfree(page_list);
849 }
850
851 static int iwch_destroy_qp(struct ib_qp *ib_qp)
852 {
853 struct iwch_dev *rhp;
854 struct iwch_qp *qhp;
855 struct iwch_qp_attributes attrs;
856 struct iwch_ucontext *ucontext;
857
858 qhp = to_iwch_qp(ib_qp);
859 rhp = qhp->rhp;
860
861 attrs.next_state = IWCH_QP_STATE_ERROR;
862 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
863 wait_event(qhp->wait, !qhp->ep);
864
865 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
866
867 atomic_dec(&qhp->refcnt);
868 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
869
870 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
871 : NULL;
872 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
873 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
874
875 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
876 ib_qp, qhp->wq.qpid, qhp);
877 kfree(qhp);
878 return 0;
879 }
880
881 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
882 struct ib_qp_init_attr *attrs,
883 struct ib_udata *udata)
884 {
885 struct iwch_dev *rhp;
886 struct iwch_qp *qhp;
887 struct iwch_pd *php;
888 struct iwch_cq *schp;
889 struct iwch_cq *rchp;
890 struct iwch_create_qp_resp uresp;
891 int wqsize, sqsize, rqsize;
892 struct iwch_ucontext *ucontext;
893
894 PDBG("%s ib_pd %p\n", __func__, pd);
895 if (attrs->qp_type != IB_QPT_RC)
896 return ERR_PTR(-EINVAL);
897 php = to_iwch_pd(pd);
898 rhp = php->rhp;
899 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
900 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
901 if (!schp || !rchp)
902 return ERR_PTR(-EINVAL);
903
904 /* The RQT size must be # of entries + 1 rounded up to a power of two */
905 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
906 if (rqsize == attrs->cap.max_recv_wr)
907 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
908
909 /* T3 doesn't support RQT depth < 16 */
910 if (rqsize < 16)
911 rqsize = 16;
912
913 if (rqsize > T3_MAX_RQ_SIZE)
914 return ERR_PTR(-EINVAL);
915
916 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
917 return ERR_PTR(-EINVAL);
918
919 /*
920 * NOTE: The SQ and total WQ sizes don't need to be
921 * a power of two. However, all the code assumes
922 * they are. EG: Q_FREECNT() and friends.
923 */
924 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
925 wqsize = roundup_pow_of_two(rqsize + sqsize);
926
927 /*
928 * Kernel users need more wq space for fastreg WRs which can take
929 * 2 WR fragments.
930 */
931 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
932 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
933 wqsize = roundup_pow_of_two(rqsize +
934 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
935 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
936 wqsize, sqsize, rqsize);
937 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
938 if (!qhp)
939 return ERR_PTR(-ENOMEM);
940 qhp->wq.size_log2 = ilog2(wqsize);
941 qhp->wq.rq_size_log2 = ilog2(rqsize);
942 qhp->wq.sq_size_log2 = ilog2(sqsize);
943 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
944 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
945 kfree(qhp);
946 return ERR_PTR(-ENOMEM);
947 }
948
949 attrs->cap.max_recv_wr = rqsize - 1;
950 attrs->cap.max_send_wr = sqsize;
951 attrs->cap.max_inline_data = T3_MAX_INLINE;
952
953 qhp->rhp = rhp;
954 qhp->attr.pd = php->pdid;
955 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
956 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
957 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
958 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
959 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
960 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
961 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
962 qhp->attr.state = IWCH_QP_STATE_IDLE;
963 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
964
965 /*
966 * XXX - These don't get passed in from the openib user
967 * at create time. The CM sets them via a QP modify.
968 * Need to fix... I think the CM should
969 */
970 qhp->attr.enable_rdma_read = 1;
971 qhp->attr.enable_rdma_write = 1;
972 qhp->attr.enable_bind = 1;
973 qhp->attr.max_ord = 1;
974 qhp->attr.max_ird = 1;
975
976 spin_lock_init(&qhp->lock);
977 init_waitqueue_head(&qhp->wait);
978 atomic_set(&qhp->refcnt, 1);
979
980 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
981 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
982 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
983 kfree(qhp);
984 return ERR_PTR(-ENOMEM);
985 }
986
987 if (udata) {
988
989 struct iwch_mm_entry *mm1, *mm2;
990
991 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
992 if (!mm1) {
993 iwch_destroy_qp(&qhp->ibqp);
994 return ERR_PTR(-ENOMEM);
995 }
996
997 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
998 if (!mm2) {
999 kfree(mm1);
1000 iwch_destroy_qp(&qhp->ibqp);
1001 return ERR_PTR(-ENOMEM);
1002 }
1003
1004 uresp.qpid = qhp->wq.qpid;
1005 uresp.size_log2 = qhp->wq.size_log2;
1006 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
1007 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
1008 spin_lock(&ucontext->mmap_lock);
1009 uresp.key = ucontext->key;
1010 ucontext->key += PAGE_SIZE;
1011 uresp.db_key = ucontext->key;
1012 ucontext->key += PAGE_SIZE;
1013 spin_unlock(&ucontext->mmap_lock);
1014 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
1015 kfree(mm1);
1016 kfree(mm2);
1017 iwch_destroy_qp(&qhp->ibqp);
1018 return ERR_PTR(-EFAULT);
1019 }
1020 mm1->key = uresp.key;
1021 mm1->addr = virt_to_phys(qhp->wq.queue);
1022 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1023 insert_mmap(ucontext, mm1);
1024 mm2->key = uresp.db_key;
1025 mm2->addr = qhp->wq.udb & PAGE_MASK;
1026 mm2->len = PAGE_SIZE;
1027 insert_mmap(ucontext, mm2);
1028 }
1029 qhp->ibqp.qp_num = qhp->wq.qpid;
1030 init_timer(&(qhp->timer));
1031 PDBG("%s sq_num_entries %d, rq_num_entries %d "
1032 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
1033 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
1034 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
1035 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
1036 return &qhp->ibqp;
1037 }
1038
1039 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1040 int attr_mask, struct ib_udata *udata)
1041 {
1042 struct iwch_dev *rhp;
1043 struct iwch_qp *qhp;
1044 enum iwch_qp_attr_mask mask = 0;
1045 struct iwch_qp_attributes attrs;
1046
1047 PDBG("%s ib_qp %p\n", __func__, ibqp);
1048
1049 /* iwarp does not support the RTR state */
1050 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1051 attr_mask &= ~IB_QP_STATE;
1052
1053 /* Make sure we still have something left to do */
1054 if (!attr_mask)
1055 return 0;
1056
1057 memset(&attrs, 0, sizeof attrs);
1058 qhp = to_iwch_qp(ibqp);
1059 rhp = qhp->rhp;
1060
1061 attrs.next_state = iwch_convert_state(attr->qp_state);
1062 attrs.enable_rdma_read = (attr->qp_access_flags &
1063 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1064 attrs.enable_rdma_write = (attr->qp_access_flags &
1065 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1066 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1067
1068
1069 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1070 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1071 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1072 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1073 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1074
1075 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1076 }
1077
1078 void iwch_qp_add_ref(struct ib_qp *qp)
1079 {
1080 PDBG("%s ib_qp %p\n", __func__, qp);
1081 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1082 }
1083
1084 void iwch_qp_rem_ref(struct ib_qp *qp)
1085 {
1086 PDBG("%s ib_qp %p\n", __func__, qp);
1087 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1088 wake_up(&(to_iwch_qp(qp)->wait));
1089 }
1090
1091 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1092 {
1093 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1094 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1095 }
1096
1097
1098 static int iwch_query_pkey(struct ib_device *ibdev,
1099 u8 port, u16 index, u16 * pkey)
1100 {
1101 PDBG("%s ibdev %p\n", __func__, ibdev);
1102 *pkey = 0;
1103 return 0;
1104 }
1105
1106 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1107 int index, union ib_gid *gid)
1108 {
1109 struct iwch_dev *dev;
1110
1111 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
1112 __func__, ibdev, port, index, gid);
1113 dev = to_iwch_dev(ibdev);
1114 BUG_ON(port == 0 || port > 2);
1115 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1116 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1117 return 0;
1118 }
1119
1120 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1121 {
1122 struct ethtool_drvinfo info;
1123 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1124 char *cp, *next;
1125 unsigned fw_maj, fw_min, fw_mic;
1126
1127 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1128
1129 next = info.fw_version + 1;
1130 cp = strsep(&next, ".");
1131 sscanf(cp, "%i", &fw_maj);
1132 cp = strsep(&next, ".");
1133 sscanf(cp, "%i", &fw_min);
1134 cp = strsep(&next, ".");
1135 sscanf(cp, "%i", &fw_mic);
1136
1137 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1138 (fw_mic & 0xffff);
1139 }
1140
1141 static int iwch_query_device(struct ib_device *ibdev,
1142 struct ib_device_attr *props)
1143 {
1144
1145 struct iwch_dev *dev;
1146 PDBG("%s ibdev %p\n", __func__, ibdev);
1147
1148 dev = to_iwch_dev(ibdev);
1149 memset(props, 0, sizeof *props);
1150 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1151 props->hw_ver = dev->rdev.t3cdev_p->type;
1152 props->fw_ver = fw_vers_string_to_u64(dev);
1153 props->device_cap_flags = dev->device_cap_flags;
1154 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1155 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1156 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1157 props->max_mr_size = dev->attr.max_mr_size;
1158 props->max_qp = dev->attr.max_qps;
1159 props->max_qp_wr = dev->attr.max_wrs;
1160 props->max_sge = dev->attr.max_sge_per_wr;
1161 props->max_sge_rd = 1;
1162 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1163 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1164 props->max_cq = dev->attr.max_cqs;
1165 props->max_cqe = dev->attr.max_cqes_per_cq;
1166 props->max_mr = dev->attr.max_mem_regs;
1167 props->max_pd = dev->attr.max_pds;
1168 props->local_ca_ack_delay = 0;
1169 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1170
1171 return 0;
1172 }
1173
1174 static int iwch_query_port(struct ib_device *ibdev,
1175 u8 port, struct ib_port_attr *props)
1176 {
1177 struct iwch_dev *dev;
1178 struct net_device *netdev;
1179 struct in_device *inetdev;
1180
1181 PDBG("%s ibdev %p\n", __func__, ibdev);
1182
1183 dev = to_iwch_dev(ibdev);
1184 netdev = dev->rdev.port_info.lldevs[port-1];
1185
1186 memset(props, 0, sizeof(struct ib_port_attr));
1187 props->max_mtu = IB_MTU_4096;
1188 if (netdev->mtu >= 4096)
1189 props->active_mtu = IB_MTU_4096;
1190 else if (netdev->mtu >= 2048)
1191 props->active_mtu = IB_MTU_2048;
1192 else if (netdev->mtu >= 1024)
1193 props->active_mtu = IB_MTU_1024;
1194 else if (netdev->mtu >= 512)
1195 props->active_mtu = IB_MTU_512;
1196 else
1197 props->active_mtu = IB_MTU_256;
1198
1199 if (!netif_carrier_ok(netdev))
1200 props->state = IB_PORT_DOWN;
1201 else {
1202 inetdev = in_dev_get(netdev);
1203 if (inetdev) {
1204 if (inetdev->ifa_list)
1205 props->state = IB_PORT_ACTIVE;
1206 else
1207 props->state = IB_PORT_INIT;
1208 in_dev_put(inetdev);
1209 } else
1210 props->state = IB_PORT_INIT;
1211 }
1212
1213 props->port_cap_flags =
1214 IB_PORT_CM_SUP |
1215 IB_PORT_SNMP_TUNNEL_SUP |
1216 IB_PORT_REINIT_SUP |
1217 IB_PORT_DEVICE_MGMT_SUP |
1218 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1219 props->gid_tbl_len = 1;
1220 props->pkey_tbl_len = 1;
1221 props->active_width = 2;
1222 props->active_speed = 2;
1223 props->max_msg_sz = -1;
1224
1225 return 0;
1226 }
1227
1228 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1229 char *buf)
1230 {
1231 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1232 ibdev.dev);
1233 PDBG("%s dev 0x%p\n", __func__, dev);
1234 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1235 }
1236
1237 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
1238 {
1239 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1240 ibdev.dev);
1241 struct ethtool_drvinfo info;
1242 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1243
1244 PDBG("%s dev 0x%p\n", __func__, dev);
1245 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1246 return sprintf(buf, "%s\n", info.fw_version);
1247 }
1248
1249 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1250 char *buf)
1251 {
1252 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1253 ibdev.dev);
1254 struct ethtool_drvinfo info;
1255 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1256
1257 PDBG("%s dev 0x%p\n", __func__, dev);
1258 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1259 return sprintf(buf, "%s\n", info.driver);
1260 }
1261
1262 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1263 char *buf)
1264 {
1265 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1266 ibdev.dev);
1267 PDBG("%s dev 0x%p\n", __func__, dev);
1268 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1269 iwch_dev->rdev.rnic_info.pdev->device);
1270 }
1271
1272 static int iwch_get_mib(struct ib_device *ibdev,
1273 union rdma_protocol_stats *stats)
1274 {
1275 struct iwch_dev *dev;
1276 struct tp_mib_stats m;
1277 int ret;
1278
1279 PDBG("%s ibdev %p\n", __func__, ibdev);
1280 dev = to_iwch_dev(ibdev);
1281 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1282 if (ret)
1283 return -ENOSYS;
1284
1285 memset(stats, 0, sizeof *stats);
1286 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1287 m.ipInReceive_lo;
1288 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1289 m.ipInHdrErrors_lo;
1290 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1291 m.ipInAddrErrors_lo;
1292 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1293 m.ipInUnknownProtos_lo;
1294 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1295 m.ipInDiscards_lo;
1296 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1297 m.ipInDelivers_lo;
1298 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1299 m.ipOutRequests_lo;
1300 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1301 m.ipOutDiscards_lo;
1302 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1303 m.ipOutNoRoutes_lo;
1304 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1305 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1306 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1307 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1308 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1309 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1310 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1311 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1312 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1313 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1314 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1315 m.tcpInSegs_lo;
1316 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1317 m.tcpOutSegs_lo;
1318 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1319 m.tcpRetransSeg_lo;
1320 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1321 m.tcpInErrs_lo;
1322 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1323 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1324 return 0;
1325 }
1326
1327 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1328 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1329 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1330 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1331
1332 static struct device_attribute *iwch_class_attributes[] = {
1333 &dev_attr_hw_rev,
1334 &dev_attr_fw_ver,
1335 &dev_attr_hca_type,
1336 &dev_attr_board_id,
1337 };
1338
1339 int iwch_register_device(struct iwch_dev *dev)
1340 {
1341 int ret;
1342 int i;
1343
1344 PDBG("%s iwch_dev %p\n", __func__, dev);
1345 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1346 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1347 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1348 dev->ibdev.owner = THIS_MODULE;
1349 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1350 IB_DEVICE_MEM_WINDOW |
1351 IB_DEVICE_MEM_MGT_EXTENSIONS;
1352
1353 /* cxgb3 supports STag 0. */
1354 dev->ibdev.local_dma_lkey = 0;
1355
1356 dev->ibdev.uverbs_cmd_mask =
1357 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1358 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1359 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1360 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1361 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1362 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1363 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1364 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1365 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1366 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1367 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1368 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1369 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1370 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1371 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1372 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1373 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1374 dev->ibdev.node_type = RDMA_NODE_RNIC;
1375 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1376 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1377 dev->ibdev.num_comp_vectors = 1;
1378 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1379 dev->ibdev.query_device = iwch_query_device;
1380 dev->ibdev.query_port = iwch_query_port;
1381 dev->ibdev.modify_port = iwch_modify_port;
1382 dev->ibdev.query_pkey = iwch_query_pkey;
1383 dev->ibdev.query_gid = iwch_query_gid;
1384 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1385 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1386 dev->ibdev.mmap = iwch_mmap;
1387 dev->ibdev.alloc_pd = iwch_allocate_pd;
1388 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1389 dev->ibdev.create_ah = iwch_ah_create;
1390 dev->ibdev.destroy_ah = iwch_ah_destroy;
1391 dev->ibdev.create_qp = iwch_create_qp;
1392 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1393 dev->ibdev.destroy_qp = iwch_destroy_qp;
1394 dev->ibdev.create_cq = iwch_create_cq;
1395 dev->ibdev.destroy_cq = iwch_destroy_cq;
1396 dev->ibdev.resize_cq = iwch_resize_cq;
1397 dev->ibdev.poll_cq = iwch_poll_cq;
1398 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1399 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1400 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1401 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1402 dev->ibdev.dereg_mr = iwch_dereg_mr;
1403 dev->ibdev.alloc_mw = iwch_alloc_mw;
1404 dev->ibdev.bind_mw = iwch_bind_mw;
1405 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1406 dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
1407 dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1408 dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
1409 dev->ibdev.attach_mcast = iwch_multicast_attach;
1410 dev->ibdev.detach_mcast = iwch_multicast_detach;
1411 dev->ibdev.process_mad = iwch_process_mad;
1412 dev->ibdev.req_notify_cq = iwch_arm_cq;
1413 dev->ibdev.post_send = iwch_post_send;
1414 dev->ibdev.post_recv = iwch_post_receive;
1415 dev->ibdev.get_protocol_stats = iwch_get_mib;
1416
1417 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1418 if (!dev->ibdev.iwcm)
1419 return -ENOMEM;
1420
1421 dev->ibdev.iwcm->connect = iwch_connect;
1422 dev->ibdev.iwcm->accept = iwch_accept_cr;
1423 dev->ibdev.iwcm->reject = iwch_reject_cr;
1424 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1425 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1426 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1427 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1428 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1429
1430 ret = ib_register_device(&dev->ibdev);
1431 if (ret)
1432 goto bail1;
1433
1434 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1435 ret = device_create_file(&dev->ibdev.dev,
1436 iwch_class_attributes[i]);
1437 if (ret) {
1438 goto bail2;
1439 }
1440 }
1441 return 0;
1442 bail2:
1443 ib_unregister_device(&dev->ibdev);
1444 bail1:
1445 kfree(dev->ibdev.iwcm);
1446 return ret;
1447 }
1448
1449 void iwch_unregister_device(struct iwch_dev *dev)
1450 {
1451 int i;
1452
1453 PDBG("%s iwch_dev %p\n", __func__, dev);
1454 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1455 device_remove_file(&dev->ibdev.dev,
1456 iwch_class_attributes[i]);
1457 ib_unregister_device(&dev->ibdev);
1458 kfree(dev->ibdev.iwcm);
1459 return;
1460 }
kernel source for telekom puls (alcatel/mediatek)