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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
1 /*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/device.h>
35 #include <linux/netdevice.h>
36 #include <linux/etherdevice.h>
37 #include <linux/delay.h>
38 #include <linux/errno.h>
39 #include <linux/list.h>
40 #include <linux/sched.h>
41 #include <linux/spinlock.h>
42 #include <linux/ethtool.h>
43 #include <linux/rtnetlink.h>
44 #include <linux/inetdevice.h>
45 #include <linux/slab.h>
46
47 #include <asm/io.h>
48 #include <asm/irq.h>
49 #include <asm/byteorder.h>
50
51 #include <rdma/iw_cm.h>
52 #include <rdma/ib_verbs.h>
53 #include <rdma/ib_smi.h>
54 #include <rdma/ib_umem.h>
55 #include <rdma/ib_user_verbs.h>
56
57 #include "cxio_hal.h"
58 #include "iwch.h"
59 #include "iwch_provider.h"
60 #include "iwch_cm.h"
61 #include "iwch_user.h"
62 #include "common.h"
63
64 static 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 const struct ib_wc *in_wc,
89 const struct ib_grh *in_grh,
90 const struct ib_mad_hdr *in_mad,
91 size_t in_mad_size,
92 struct ib_mad_hdr *out_mad,
93 size_t *out_mad_size,
94 u16 *out_mad_pkey_index)
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,
146 const struct ib_cq_init_attr *attr,
147 struct ib_ucontext *ib_context,
148 struct ib_udata *udata)
149 {
150 int entries = attr->cqe;
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 static int warned;
157 size_t resplen;
158
159 PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
160 if (attr->flags)
161 return ERR_PTR(-EINVAL);
162
163 rhp = to_iwch_dev(ibdev);
164 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
165 if (!chp)
166 return ERR_PTR(-ENOMEM);
167
168 if (ib_context) {
169 ucontext = to_iwch_ucontext(ib_context);
170 if (!t3a_device(rhp)) {
171 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
172 kfree(chp);
173 return ERR_PTR(-EFAULT);
174 }
175 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
176 }
177 }
178
179 if (t3a_device(rhp)) {
180
181 /*
182 * T3A: Add some fluff to handle extra CQEs inserted
183 * for various errors.
184 * Additional CQE possibilities:
185 * TERMINATE,
186 * incoming RDMA WRITE Failures
187 * incoming RDMA READ REQUEST FAILUREs
188 * NOTE: We cannot ensure the CQ won't overflow.
189 */
190 entries += 16;
191 }
192 entries = roundup_pow_of_two(entries);
193 chp->cq.size_log2 = ilog2(entries);
194
195 if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
196 kfree(chp);
197 return ERR_PTR(-ENOMEM);
198 }
199 chp->rhp = rhp;
200 chp->ibcq.cqe = 1 << chp->cq.size_log2;
201 spin_lock_init(&chp->lock);
202 spin_lock_init(&chp->comp_handler_lock);
203 atomic_set(&chp->refcnt, 1);
204 init_waitqueue_head(&chp->wait);
205 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
206 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
207 kfree(chp);
208 return ERR_PTR(-ENOMEM);
209 }
210
211 if (ucontext) {
212 struct iwch_mm_entry *mm;
213
214 mm = kmalloc(sizeof *mm, GFP_KERNEL);
215 if (!mm) {
216 iwch_destroy_cq(&chp->ibcq);
217 return ERR_PTR(-ENOMEM);
218 }
219 uresp.cqid = chp->cq.cqid;
220 uresp.size_log2 = chp->cq.size_log2;
221 spin_lock(&ucontext->mmap_lock);
222 uresp.key = ucontext->key;
223 ucontext->key += PAGE_SIZE;
224 spin_unlock(&ucontext->mmap_lock);
225 mm->key = uresp.key;
226 mm->addr = virt_to_phys(chp->cq.queue);
227 if (udata->outlen < sizeof uresp) {
228 if (!warned++)
229 printk(KERN_WARNING MOD "Warning - "
230 "downlevel libcxgb3 (non-fatal).\n");
231 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
232 sizeof(struct t3_cqe));
233 resplen = sizeof(struct iwch_create_cq_resp_v0);
234 } else {
235 mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
236 sizeof(struct t3_cqe));
237 uresp.memsize = mm->len;
238 uresp.reserved = 0;
239 resplen = sizeof uresp;
240 }
241 if (ib_copy_to_udata(udata, &uresp, resplen)) {
242 kfree(mm);
243 iwch_destroy_cq(&chp->ibcq);
244 return ERR_PTR(-EFAULT);
245 }
246 insert_mmap(ucontext, mm);
247 }
248 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
249 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
250 (unsigned long long) chp->cq.dma_addr);
251 return &chp->ibcq;
252 }
253
254 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
255 {
256 #ifdef notyet
257 struct iwch_cq *chp = to_iwch_cq(cq);
258 struct t3_cq oldcq, newcq;
259 int ret;
260
261 PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
262
263 /* We don't downsize... */
264 if (cqe <= cq->cqe)
265 return 0;
266
267 /* create new t3_cq with new size */
268 cqe = roundup_pow_of_two(cqe+1);
269 newcq.size_log2 = ilog2(cqe);
270
271 /* Dont allow resize to less than the current wce count */
272 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
273 return -ENOMEM;
274 }
275
276 /* Quiesce all QPs using this CQ */
277 ret = iwch_quiesce_qps(chp);
278 if (ret) {
279 return ret;
280 }
281
282 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
283 if (ret) {
284 return ret;
285 }
286
287 /* copy CQEs */
288 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
289 sizeof(struct t3_cqe));
290
291 /* old iwch_qp gets new t3_cq but keeps old cqid */
292 oldcq = chp->cq;
293 chp->cq = newcq;
294 chp->cq.cqid = oldcq.cqid;
295
296 /* resize new t3_cq to update the HW context */
297 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
298 if (ret) {
299 chp->cq = oldcq;
300 return ret;
301 }
302 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
303
304 /* destroy old t3_cq */
305 oldcq.cqid = newcq.cqid;
306 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
307 if (ret) {
308 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
309 __func__, ret);
310 }
311
312 /* add user hooks here */
313
314 /* resume qps */
315 ret = iwch_resume_qps(chp);
316 return ret;
317 #else
318 return -ENOSYS;
319 #endif
320 }
321
322 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
323 {
324 struct iwch_dev *rhp;
325 struct iwch_cq *chp;
326 enum t3_cq_opcode cq_op;
327 int err;
328 unsigned long flag;
329 u32 rptr;
330
331 chp = to_iwch_cq(ibcq);
332 rhp = chp->rhp;
333 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
334 cq_op = CQ_ARM_SE;
335 else
336 cq_op = CQ_ARM_AN;
337 if (chp->user_rptr_addr) {
338 if (get_user(rptr, chp->user_rptr_addr))
339 return -EFAULT;
340 spin_lock_irqsave(&chp->lock, flag);
341 chp->cq.rptr = rptr;
342 } else
343 spin_lock_irqsave(&chp->lock, flag);
344 PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
345 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
346 spin_unlock_irqrestore(&chp->lock, flag);
347 if (err < 0)
348 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
349 chp->cq.cqid);
350 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
351 err = 0;
352 return err;
353 }
354
355 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
356 {
357 int len = vma->vm_end - vma->vm_start;
358 u32 key = vma->vm_pgoff << PAGE_SHIFT;
359 struct cxio_rdev *rdev_p;
360 int ret = 0;
361 struct iwch_mm_entry *mm;
362 struct iwch_ucontext *ucontext;
363 u64 addr;
364
365 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
366 key, len);
367
368 if (vma->vm_start & (PAGE_SIZE-1)) {
369 return -EINVAL;
370 }
371
372 rdev_p = &(to_iwch_dev(context->device)->rdev);
373 ucontext = to_iwch_ucontext(context);
374
375 mm = remove_mmap(ucontext, key, len);
376 if (!mm)
377 return -EINVAL;
378 addr = mm->addr;
379 kfree(mm);
380
381 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
382 (addr < (rdev_p->rnic_info.udbell_physbase +
383 rdev_p->rnic_info.udbell_len))) {
384
385 /*
386 * Map T3 DB register.
387 */
388 if (vma->vm_flags & VM_READ) {
389 return -EPERM;
390 }
391
392 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
393 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
394 vma->vm_flags &= ~VM_MAYREAD;
395 ret = io_remap_pfn_range(vma, vma->vm_start,
396 addr >> PAGE_SHIFT,
397 len, vma->vm_page_prot);
398 } else {
399
400 /*
401 * Map WQ or CQ contig dma memory...
402 */
403 ret = remap_pfn_range(vma, vma->vm_start,
404 addr >> PAGE_SHIFT,
405 len, vma->vm_page_prot);
406 }
407
408 return ret;
409 }
410
411 static int iwch_deallocate_pd(struct ib_pd *pd)
412 {
413 struct iwch_dev *rhp;
414 struct iwch_pd *php;
415
416 php = to_iwch_pd(pd);
417 rhp = php->rhp;
418 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
419 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
420 kfree(php);
421 return 0;
422 }
423
424 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
425 struct ib_ucontext *context,
426 struct ib_udata *udata)
427 {
428 struct iwch_pd *php;
429 u32 pdid;
430 struct iwch_dev *rhp;
431
432 PDBG("%s ibdev %p\n", __func__, ibdev);
433 rhp = (struct iwch_dev *) ibdev;
434 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
435 if (!pdid)
436 return ERR_PTR(-EINVAL);
437 php = kzalloc(sizeof(*php), GFP_KERNEL);
438 if (!php) {
439 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
440 return ERR_PTR(-ENOMEM);
441 }
442 php->pdid = pdid;
443 php->rhp = rhp;
444 if (context) {
445 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
446 iwch_deallocate_pd(&php->ibpd);
447 return ERR_PTR(-EFAULT);
448 }
449 }
450 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
451 return &php->ibpd;
452 }
453
454 static int iwch_dereg_mr(struct ib_mr *ib_mr)
455 {
456 struct iwch_dev *rhp;
457 struct iwch_mr *mhp;
458 u32 mmid;
459
460 PDBG("%s ib_mr %p\n", __func__, ib_mr);
461 /* There can be no memory windows */
462 if (atomic_read(&ib_mr->usecnt))
463 return -EINVAL;
464
465 mhp = to_iwch_mr(ib_mr);
466 rhp = mhp->rhp;
467 mmid = mhp->attr.stag >> 8;
468 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
469 mhp->attr.pbl_addr);
470 iwch_free_pbl(mhp);
471 remove_handle(rhp, &rhp->mmidr, mmid);
472 if (mhp->kva)
473 kfree((void *) (unsigned long) mhp->kva);
474 if (mhp->umem)
475 ib_umem_release(mhp->umem);
476 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
477 kfree(mhp);
478 return 0;
479 }
480
481 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
482 struct ib_phys_buf *buffer_list,
483 int num_phys_buf,
484 int acc,
485 u64 *iova_start)
486 {
487 __be64 *page_list;
488 int shift;
489 u64 total_size;
490 int npages;
491 struct iwch_dev *rhp;
492 struct iwch_pd *php;
493 struct iwch_mr *mhp;
494 int ret;
495
496 PDBG("%s ib_pd %p\n", __func__, pd);
497 php = to_iwch_pd(pd);
498 rhp = php->rhp;
499
500 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
501 if (!mhp)
502 return ERR_PTR(-ENOMEM);
503
504 mhp->rhp = rhp;
505
506 /* First check that we have enough alignment */
507 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
508 ret = -EINVAL;
509 goto err;
510 }
511
512 if (num_phys_buf > 1 &&
513 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
514 ret = -EINVAL;
515 goto err;
516 }
517
518 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
519 &total_size, &npages, &shift, &page_list);
520 if (ret)
521 goto err;
522
523 ret = iwch_alloc_pbl(mhp, npages);
524 if (ret) {
525 kfree(page_list);
526 goto err_pbl;
527 }
528
529 ret = iwch_write_pbl(mhp, page_list, npages, 0);
530 kfree(page_list);
531 if (ret)
532 goto err_pbl;
533
534 mhp->attr.pdid = php->pdid;
535 mhp->attr.zbva = 0;
536
537 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
538 mhp->attr.va_fbo = *iova_start;
539 mhp->attr.page_size = shift - 12;
540
541 mhp->attr.len = (u32) total_size;
542 mhp->attr.pbl_size = npages;
543 ret = iwch_register_mem(rhp, php, mhp, shift);
544 if (ret)
545 goto err_pbl;
546
547 return &mhp->ibmr;
548
549 err_pbl:
550 iwch_free_pbl(mhp);
551
552 err:
553 kfree(mhp);
554 return ERR_PTR(ret);
555
556 }
557
558 static int iwch_reregister_phys_mem(struct ib_mr *mr,
559 int mr_rereg_mask,
560 struct ib_pd *pd,
561 struct ib_phys_buf *buffer_list,
562 int num_phys_buf,
563 int acc, u64 * iova_start)
564 {
565
566 struct iwch_mr mh, *mhp;
567 struct iwch_pd *php;
568 struct iwch_dev *rhp;
569 __be64 *page_list = NULL;
570 int shift = 0;
571 u64 total_size;
572 int npages = 0;
573 int ret;
574
575 PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
576
577 /* There can be no memory windows */
578 if (atomic_read(&mr->usecnt))
579 return -EINVAL;
580
581 mhp = to_iwch_mr(mr);
582 rhp = mhp->rhp;
583 php = to_iwch_pd(mr->pd);
584
585 /* make sure we are on the same adapter */
586 if (rhp != php->rhp)
587 return -EINVAL;
588
589 memcpy(&mh, mhp, sizeof *mhp);
590
591 if (mr_rereg_mask & IB_MR_REREG_PD)
592 php = to_iwch_pd(pd);
593 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
594 mh.attr.perms = iwch_ib_to_tpt_access(acc);
595 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
596 ret = build_phys_page_list(buffer_list, num_phys_buf,
597 iova_start,
598 &total_size, &npages,
599 &shift, &page_list);
600 if (ret)
601 return ret;
602 }
603
604 ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
605 kfree(page_list);
606 if (ret) {
607 return ret;
608 }
609 if (mr_rereg_mask & IB_MR_REREG_PD)
610 mhp->attr.pdid = php->pdid;
611 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
612 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
613 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
614 mhp->attr.zbva = 0;
615 mhp->attr.va_fbo = *iova_start;
616 mhp->attr.page_size = shift - 12;
617 mhp->attr.len = (u32) total_size;
618 mhp->attr.pbl_size = npages;
619 }
620
621 return 0;
622 }
623
624
625 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
626 u64 virt, int acc, struct ib_udata *udata)
627 {
628 __be64 *pages;
629 int shift, n, len;
630 int i, k, entry;
631 int err = 0;
632 struct iwch_dev *rhp;
633 struct iwch_pd *php;
634 struct iwch_mr *mhp;
635 struct iwch_reg_user_mr_resp uresp;
636 struct scatterlist *sg;
637 PDBG("%s ib_pd %p\n", __func__, pd);
638
639 php = to_iwch_pd(pd);
640 rhp = php->rhp;
641 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
642 if (!mhp)
643 return ERR_PTR(-ENOMEM);
644
645 mhp->rhp = rhp;
646
647 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
648 if (IS_ERR(mhp->umem)) {
649 err = PTR_ERR(mhp->umem);
650 kfree(mhp);
651 return ERR_PTR(err);
652 }
653
654 shift = ffs(mhp->umem->page_size) - 1;
655
656 n = mhp->umem->nmap;
657
658 err = iwch_alloc_pbl(mhp, n);
659 if (err)
660 goto err;
661
662 pages = (__be64 *) __get_free_page(GFP_KERNEL);
663 if (!pages) {
664 err = -ENOMEM;
665 goto err_pbl;
666 }
667
668 i = n = 0;
669
670 for_each_sg(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) {
671 len = sg_dma_len(sg) >> shift;
672 for (k = 0; k < len; ++k) {
673 pages[i++] = cpu_to_be64(sg_dma_address(sg) +
674 mhp->umem->page_size * k);
675 if (i == PAGE_SIZE / sizeof *pages) {
676 err = iwch_write_pbl(mhp, pages, i, n);
677 if (err)
678 goto pbl_done;
679 n += i;
680 i = 0;
681 }
682 }
683 }
684
685 if (i)
686 err = iwch_write_pbl(mhp, pages, i, n);
687
688 pbl_done:
689 free_page((unsigned long) pages);
690 if (err)
691 goto err_pbl;
692
693 mhp->attr.pdid = php->pdid;
694 mhp->attr.zbva = 0;
695 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
696 mhp->attr.va_fbo = virt;
697 mhp->attr.page_size = shift - 12;
698 mhp->attr.len = (u32) length;
699
700 err = iwch_register_mem(rhp, php, mhp, shift);
701 if (err)
702 goto err_pbl;
703
704 if (udata && !t3a_device(rhp)) {
705 uresp.pbl_addr = (mhp->attr.pbl_addr -
706 rhp->rdev.rnic_info.pbl_base) >> 3;
707 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
708 uresp.pbl_addr);
709
710 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
711 iwch_dereg_mr(&mhp->ibmr);
712 err = -EFAULT;
713 goto err;
714 }
715 }
716
717 return &mhp->ibmr;
718
719 err_pbl:
720 iwch_free_pbl(mhp);
721
722 err:
723 ib_umem_release(mhp->umem);
724 kfree(mhp);
725 return ERR_PTR(err);
726 }
727
728 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
729 {
730 struct ib_phys_buf bl;
731 u64 kva;
732 struct ib_mr *ibmr;
733
734 PDBG("%s ib_pd %p\n", __func__, pd);
735
736 /*
737 * T3 only supports 32 bits of size.
738 */
739 if (sizeof(phys_addr_t) > 4) {
740 pr_warn_once(MOD "Cannot support dma_mrs on this platform.\n");
741 return ERR_PTR(-ENOTSUPP);
742 }
743 bl.size = 0xffffffff;
744 bl.addr = 0;
745 kva = 0;
746 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
747 return ibmr;
748 }
749
750 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
751 {
752 struct iwch_dev *rhp;
753 struct iwch_pd *php;
754 struct iwch_mw *mhp;
755 u32 mmid;
756 u32 stag = 0;
757 int ret;
758
759 if (type != IB_MW_TYPE_1)
760 return ERR_PTR(-EINVAL);
761
762 php = to_iwch_pd(pd);
763 rhp = php->rhp;
764 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
765 if (!mhp)
766 return ERR_PTR(-ENOMEM);
767 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
768 if (ret) {
769 kfree(mhp);
770 return ERR_PTR(ret);
771 }
772 mhp->rhp = rhp;
773 mhp->attr.pdid = php->pdid;
774 mhp->attr.type = TPT_MW;
775 mhp->attr.stag = stag;
776 mmid = (stag) >> 8;
777 mhp->ibmw.rkey = stag;
778 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
779 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
780 kfree(mhp);
781 return ERR_PTR(-ENOMEM);
782 }
783 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
784 return &(mhp->ibmw);
785 }
786
787 static int iwch_dealloc_mw(struct ib_mw *mw)
788 {
789 struct iwch_dev *rhp;
790 struct iwch_mw *mhp;
791 u32 mmid;
792
793 mhp = to_iwch_mw(mw);
794 rhp = mhp->rhp;
795 mmid = (mw->rkey) >> 8;
796 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
797 remove_handle(rhp, &rhp->mmidr, mmid);
798 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
799 kfree(mhp);
800 return 0;
801 }
802
803 static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
804 {
805 struct iwch_dev *rhp;
806 struct iwch_pd *php;
807 struct iwch_mr *mhp;
808 u32 mmid;
809 u32 stag = 0;
810 int ret = 0;
811
812 php = to_iwch_pd(pd);
813 rhp = php->rhp;
814 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
815 if (!mhp)
816 goto err;
817
818 mhp->rhp = rhp;
819 ret = iwch_alloc_pbl(mhp, pbl_depth);
820 if (ret)
821 goto err1;
822 mhp->attr.pbl_size = pbl_depth;
823 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
824 mhp->attr.pbl_size, mhp->attr.pbl_addr);
825 if (ret)
826 goto err2;
827 mhp->attr.pdid = php->pdid;
828 mhp->attr.type = TPT_NON_SHARED_MR;
829 mhp->attr.stag = stag;
830 mhp->attr.state = 1;
831 mmid = (stag) >> 8;
832 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
833 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
834 goto err3;
835
836 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
837 return &(mhp->ibmr);
838 err3:
839 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
840 mhp->attr.pbl_addr);
841 err2:
842 iwch_free_pbl(mhp);
843 err1:
844 kfree(mhp);
845 err:
846 return ERR_PTR(ret);
847 }
848
849 static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
850 struct ib_device *device,
851 int page_list_len)
852 {
853 struct ib_fast_reg_page_list *page_list;
854
855 page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
856 GFP_KERNEL);
857 if (!page_list)
858 return ERR_PTR(-ENOMEM);
859
860 page_list->page_list = (u64 *)(page_list + 1);
861 page_list->max_page_list_len = page_list_len;
862
863 return page_list;
864 }
865
866 static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
867 {
868 kfree(page_list);
869 }
870
871 static int iwch_destroy_qp(struct ib_qp *ib_qp)
872 {
873 struct iwch_dev *rhp;
874 struct iwch_qp *qhp;
875 struct iwch_qp_attributes attrs;
876 struct iwch_ucontext *ucontext;
877
878 qhp = to_iwch_qp(ib_qp);
879 rhp = qhp->rhp;
880
881 attrs.next_state = IWCH_QP_STATE_ERROR;
882 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
883 wait_event(qhp->wait, !qhp->ep);
884
885 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
886
887 atomic_dec(&qhp->refcnt);
888 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
889
890 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
891 : NULL;
892 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
893 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
894
895 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
896 ib_qp, qhp->wq.qpid, qhp);
897 kfree(qhp);
898 return 0;
899 }
900
901 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
902 struct ib_qp_init_attr *attrs,
903 struct ib_udata *udata)
904 {
905 struct iwch_dev *rhp;
906 struct iwch_qp *qhp;
907 struct iwch_pd *php;
908 struct iwch_cq *schp;
909 struct iwch_cq *rchp;
910 struct iwch_create_qp_resp uresp;
911 int wqsize, sqsize, rqsize;
912 struct iwch_ucontext *ucontext;
913
914 PDBG("%s ib_pd %p\n", __func__, pd);
915 if (attrs->qp_type != IB_QPT_RC)
916 return ERR_PTR(-EINVAL);
917 php = to_iwch_pd(pd);
918 rhp = php->rhp;
919 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
920 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
921 if (!schp || !rchp)
922 return ERR_PTR(-EINVAL);
923
924 /* The RQT size must be # of entries + 1 rounded up to a power of two */
925 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
926 if (rqsize == attrs->cap.max_recv_wr)
927 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
928
929 /* T3 doesn't support RQT depth < 16 */
930 if (rqsize < 16)
931 rqsize = 16;
932
933 if (rqsize > T3_MAX_RQ_SIZE)
934 return ERR_PTR(-EINVAL);
935
936 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
937 return ERR_PTR(-EINVAL);
938
939 /*
940 * NOTE: The SQ and total WQ sizes don't need to be
941 * a power of two. However, all the code assumes
942 * they are. EG: Q_FREECNT() and friends.
943 */
944 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
945 wqsize = roundup_pow_of_two(rqsize + sqsize);
946
947 /*
948 * Kernel users need more wq space for fastreg WRs which can take
949 * 2 WR fragments.
950 */
951 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
952 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
953 wqsize = roundup_pow_of_two(rqsize +
954 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
955 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
956 wqsize, sqsize, rqsize);
957 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
958 if (!qhp)
959 return ERR_PTR(-ENOMEM);
960 qhp->wq.size_log2 = ilog2(wqsize);
961 qhp->wq.rq_size_log2 = ilog2(rqsize);
962 qhp->wq.sq_size_log2 = ilog2(sqsize);
963 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
964 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
965 kfree(qhp);
966 return ERR_PTR(-ENOMEM);
967 }
968
969 attrs->cap.max_recv_wr = rqsize - 1;
970 attrs->cap.max_send_wr = sqsize;
971 attrs->cap.max_inline_data = T3_MAX_INLINE;
972
973 qhp->rhp = rhp;
974 qhp->attr.pd = php->pdid;
975 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
976 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
977 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
978 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
979 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
980 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
981 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
982 qhp->attr.state = IWCH_QP_STATE_IDLE;
983 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
984
985 /*
986 * XXX - These don't get passed in from the openib user
987 * at create time. The CM sets them via a QP modify.
988 * Need to fix... I think the CM should
989 */
990 qhp->attr.enable_rdma_read = 1;
991 qhp->attr.enable_rdma_write = 1;
992 qhp->attr.enable_bind = 1;
993 qhp->attr.max_ord = 1;
994 qhp->attr.max_ird = 1;
995
996 spin_lock_init(&qhp->lock);
997 init_waitqueue_head(&qhp->wait);
998 atomic_set(&qhp->refcnt, 1);
999
1000 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
1001 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
1002 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
1003 kfree(qhp);
1004 return ERR_PTR(-ENOMEM);
1005 }
1006
1007 if (udata) {
1008
1009 struct iwch_mm_entry *mm1, *mm2;
1010
1011 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
1012 if (!mm1) {
1013 iwch_destroy_qp(&qhp->ibqp);
1014 return ERR_PTR(-ENOMEM);
1015 }
1016
1017 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
1018 if (!mm2) {
1019 kfree(mm1);
1020 iwch_destroy_qp(&qhp->ibqp);
1021 return ERR_PTR(-ENOMEM);
1022 }
1023
1024 uresp.qpid = qhp->wq.qpid;
1025 uresp.size_log2 = qhp->wq.size_log2;
1026 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
1027 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
1028 spin_lock(&ucontext->mmap_lock);
1029 uresp.key = ucontext->key;
1030 ucontext->key += PAGE_SIZE;
1031 uresp.db_key = ucontext->key;
1032 ucontext->key += PAGE_SIZE;
1033 spin_unlock(&ucontext->mmap_lock);
1034 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
1035 kfree(mm1);
1036 kfree(mm2);
1037 iwch_destroy_qp(&qhp->ibqp);
1038 return ERR_PTR(-EFAULT);
1039 }
1040 mm1->key = uresp.key;
1041 mm1->addr = virt_to_phys(qhp->wq.queue);
1042 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1043 insert_mmap(ucontext, mm1);
1044 mm2->key = uresp.db_key;
1045 mm2->addr = qhp->wq.udb & PAGE_MASK;
1046 mm2->len = PAGE_SIZE;
1047 insert_mmap(ucontext, mm2);
1048 }
1049 qhp->ibqp.qp_num = qhp->wq.qpid;
1050 init_timer(&(qhp->timer));
1051 PDBG("%s sq_num_entries %d, rq_num_entries %d "
1052 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
1053 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
1054 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
1055 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
1056 return &qhp->ibqp;
1057 }
1058
1059 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1060 int attr_mask, struct ib_udata *udata)
1061 {
1062 struct iwch_dev *rhp;
1063 struct iwch_qp *qhp;
1064 enum iwch_qp_attr_mask mask = 0;
1065 struct iwch_qp_attributes attrs;
1066
1067 PDBG("%s ib_qp %p\n", __func__, ibqp);
1068
1069 /* iwarp does not support the RTR state */
1070 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1071 attr_mask &= ~IB_QP_STATE;
1072
1073 /* Make sure we still have something left to do */
1074 if (!attr_mask)
1075 return 0;
1076
1077 memset(&attrs, 0, sizeof attrs);
1078 qhp = to_iwch_qp(ibqp);
1079 rhp = qhp->rhp;
1080
1081 attrs.next_state = iwch_convert_state(attr->qp_state);
1082 attrs.enable_rdma_read = (attr->qp_access_flags &
1083 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1084 attrs.enable_rdma_write = (attr->qp_access_flags &
1085 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1086 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1087
1088
1089 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1090 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1091 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1092 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1093 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1094
1095 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1096 }
1097
1098 void iwch_qp_add_ref(struct ib_qp *qp)
1099 {
1100 PDBG("%s ib_qp %p\n", __func__, qp);
1101 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1102 }
1103
1104 void iwch_qp_rem_ref(struct ib_qp *qp)
1105 {
1106 PDBG("%s ib_qp %p\n", __func__, qp);
1107 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1108 wake_up(&(to_iwch_qp(qp)->wait));
1109 }
1110
1111 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1112 {
1113 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1114 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1115 }
1116
1117
1118 static int iwch_query_pkey(struct ib_device *ibdev,
1119 u8 port, u16 index, u16 * pkey)
1120 {
1121 PDBG("%s ibdev %p\n", __func__, ibdev);
1122 *pkey = 0;
1123 return 0;
1124 }
1125
1126 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1127 int index, union ib_gid *gid)
1128 {
1129 struct iwch_dev *dev;
1130
1131 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
1132 __func__, ibdev, port, index, gid);
1133 dev = to_iwch_dev(ibdev);
1134 BUG_ON(port == 0 || port > 2);
1135 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1136 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1137 return 0;
1138 }
1139
1140 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1141 {
1142 struct ethtool_drvinfo info;
1143 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1144 char *cp, *next;
1145 unsigned fw_maj, fw_min, fw_mic;
1146
1147 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1148
1149 next = info.fw_version + 1;
1150 cp = strsep(&next, ".");
1151 sscanf(cp, "%i", &fw_maj);
1152 cp = strsep(&next, ".");
1153 sscanf(cp, "%i", &fw_min);
1154 cp = strsep(&next, ".");
1155 sscanf(cp, "%i", &fw_mic);
1156
1157 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1158 (fw_mic & 0xffff);
1159 }
1160
1161 static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
1162 struct ib_udata *uhw)
1163 {
1164
1165 struct iwch_dev *dev;
1166
1167 PDBG("%s ibdev %p\n", __func__, ibdev);
1168
1169 if (uhw->inlen || uhw->outlen)
1170 return -EINVAL;
1171
1172 dev = to_iwch_dev(ibdev);
1173 memset(props, 0, sizeof *props);
1174 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1175 props->hw_ver = dev->rdev.t3cdev_p->type;
1176 props->fw_ver = fw_vers_string_to_u64(dev);
1177 props->device_cap_flags = dev->device_cap_flags;
1178 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1179 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1180 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1181 props->max_mr_size = dev->attr.max_mr_size;
1182 props->max_qp = dev->attr.max_qps;
1183 props->max_qp_wr = dev->attr.max_wrs;
1184 props->max_sge = dev->attr.max_sge_per_wr;
1185 props->max_sge_rd = 1;
1186 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1187 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1188 props->max_cq = dev->attr.max_cqs;
1189 props->max_cqe = dev->attr.max_cqes_per_cq;
1190 props->max_mr = dev->attr.max_mem_regs;
1191 props->max_pd = dev->attr.max_pds;
1192 props->local_ca_ack_delay = 0;
1193 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1194
1195 return 0;
1196 }
1197
1198 static int iwch_query_port(struct ib_device *ibdev,
1199 u8 port, struct ib_port_attr *props)
1200 {
1201 struct iwch_dev *dev;
1202 struct net_device *netdev;
1203 struct in_device *inetdev;
1204
1205 PDBG("%s ibdev %p\n", __func__, ibdev);
1206
1207 dev = to_iwch_dev(ibdev);
1208 netdev = dev->rdev.port_info.lldevs[port-1];
1209
1210 memset(props, 0, sizeof(struct ib_port_attr));
1211 props->max_mtu = IB_MTU_4096;
1212 if (netdev->mtu >= 4096)
1213 props->active_mtu = IB_MTU_4096;
1214 else if (netdev->mtu >= 2048)
1215 props->active_mtu = IB_MTU_2048;
1216 else if (netdev->mtu >= 1024)
1217 props->active_mtu = IB_MTU_1024;
1218 else if (netdev->mtu >= 512)
1219 props->active_mtu = IB_MTU_512;
1220 else
1221 props->active_mtu = IB_MTU_256;
1222
1223 if (!netif_carrier_ok(netdev))
1224 props->state = IB_PORT_DOWN;
1225 else {
1226 inetdev = in_dev_get(netdev);
1227 if (inetdev) {
1228 if (inetdev->ifa_list)
1229 props->state = IB_PORT_ACTIVE;
1230 else
1231 props->state = IB_PORT_INIT;
1232 in_dev_put(inetdev);
1233 } else
1234 props->state = IB_PORT_INIT;
1235 }
1236
1237 props->port_cap_flags =
1238 IB_PORT_CM_SUP |
1239 IB_PORT_SNMP_TUNNEL_SUP |
1240 IB_PORT_REINIT_SUP |
1241 IB_PORT_DEVICE_MGMT_SUP |
1242 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1243 props->gid_tbl_len = 1;
1244 props->pkey_tbl_len = 1;
1245 props->active_width = 2;
1246 props->active_speed = IB_SPEED_DDR;
1247 props->max_msg_sz = -1;
1248
1249 return 0;
1250 }
1251
1252 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1253 char *buf)
1254 {
1255 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1256 ibdev.dev);
1257 PDBG("%s dev 0x%p\n", __func__, dev);
1258 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1259 }
1260
1261 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
1262 {
1263 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1264 ibdev.dev);
1265 struct ethtool_drvinfo info;
1266 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1267
1268 PDBG("%s dev 0x%p\n", __func__, dev);
1269 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1270 return sprintf(buf, "%s\n", info.fw_version);
1271 }
1272
1273 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1274 char *buf)
1275 {
1276 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1277 ibdev.dev);
1278 struct ethtool_drvinfo info;
1279 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1280
1281 PDBG("%s dev 0x%p\n", __func__, dev);
1282 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1283 return sprintf(buf, "%s\n", info.driver);
1284 }
1285
1286 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1287 char *buf)
1288 {
1289 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1290 ibdev.dev);
1291 PDBG("%s dev 0x%p\n", __func__, dev);
1292 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1293 iwch_dev->rdev.rnic_info.pdev->device);
1294 }
1295
1296 static int iwch_get_mib(struct ib_device *ibdev,
1297 union rdma_protocol_stats *stats)
1298 {
1299 struct iwch_dev *dev;
1300 struct tp_mib_stats m;
1301 int ret;
1302
1303 PDBG("%s ibdev %p\n", __func__, ibdev);
1304 dev = to_iwch_dev(ibdev);
1305 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1306 if (ret)
1307 return -ENOSYS;
1308
1309 memset(stats, 0, sizeof *stats);
1310 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1311 m.ipInReceive_lo;
1312 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1313 m.ipInHdrErrors_lo;
1314 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1315 m.ipInAddrErrors_lo;
1316 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1317 m.ipInUnknownProtos_lo;
1318 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1319 m.ipInDiscards_lo;
1320 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1321 m.ipInDelivers_lo;
1322 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1323 m.ipOutRequests_lo;
1324 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1325 m.ipOutDiscards_lo;
1326 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1327 m.ipOutNoRoutes_lo;
1328 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1329 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1330 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1331 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1332 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1333 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1334 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1335 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1336 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1337 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1338 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1339 m.tcpInSegs_lo;
1340 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1341 m.tcpOutSegs_lo;
1342 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1343 m.tcpRetransSeg_lo;
1344 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1345 m.tcpInErrs_lo;
1346 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1347 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1348 return 0;
1349 }
1350
1351 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1352 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1353 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1354 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1355
1356 static struct device_attribute *iwch_class_attributes[] = {
1357 &dev_attr_hw_rev,
1358 &dev_attr_fw_ver,
1359 &dev_attr_hca_type,
1360 &dev_attr_board_id,
1361 };
1362
1363 static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
1364 struct ib_port_immutable *immutable)
1365 {
1366 struct ib_port_attr attr;
1367 int err;
1368
1369 err = iwch_query_port(ibdev, port_num, &attr);
1370 if (err)
1371 return err;
1372
1373 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1374 immutable->gid_tbl_len = attr.gid_tbl_len;
1375 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
1376
1377 return 0;
1378 }
1379
1380 int iwch_register_device(struct iwch_dev *dev)
1381 {
1382 int ret;
1383 int i;
1384
1385 PDBG("%s iwch_dev %p\n", __func__, dev);
1386 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1387 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1388 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1389 dev->ibdev.owner = THIS_MODULE;
1390 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1391 IB_DEVICE_MEM_WINDOW |
1392 IB_DEVICE_MEM_MGT_EXTENSIONS;
1393
1394 /* cxgb3 supports STag 0. */
1395 dev->ibdev.local_dma_lkey = 0;
1396
1397 dev->ibdev.uverbs_cmd_mask =
1398 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1399 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1400 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1401 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1402 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1403 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1404 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1405 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1406 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1407 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1408 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1409 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1410 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1411 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1412 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1413 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1414 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1415 dev->ibdev.node_type = RDMA_NODE_RNIC;
1416 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1417 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1418 dev->ibdev.num_comp_vectors = 1;
1419 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1420 dev->ibdev.query_device = iwch_query_device;
1421 dev->ibdev.query_port = iwch_query_port;
1422 dev->ibdev.query_pkey = iwch_query_pkey;
1423 dev->ibdev.query_gid = iwch_query_gid;
1424 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1425 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1426 dev->ibdev.mmap = iwch_mmap;
1427 dev->ibdev.alloc_pd = iwch_allocate_pd;
1428 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1429 dev->ibdev.create_ah = iwch_ah_create;
1430 dev->ibdev.destroy_ah = iwch_ah_destroy;
1431 dev->ibdev.create_qp = iwch_create_qp;
1432 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1433 dev->ibdev.destroy_qp = iwch_destroy_qp;
1434 dev->ibdev.create_cq = iwch_create_cq;
1435 dev->ibdev.destroy_cq = iwch_destroy_cq;
1436 dev->ibdev.resize_cq = iwch_resize_cq;
1437 dev->ibdev.poll_cq = iwch_poll_cq;
1438 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1439 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1440 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1441 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1442 dev->ibdev.dereg_mr = iwch_dereg_mr;
1443 dev->ibdev.alloc_mw = iwch_alloc_mw;
1444 dev->ibdev.bind_mw = iwch_bind_mw;
1445 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1446 dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
1447 dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1448 dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
1449 dev->ibdev.attach_mcast = iwch_multicast_attach;
1450 dev->ibdev.detach_mcast = iwch_multicast_detach;
1451 dev->ibdev.process_mad = iwch_process_mad;
1452 dev->ibdev.req_notify_cq = iwch_arm_cq;
1453 dev->ibdev.post_send = iwch_post_send;
1454 dev->ibdev.post_recv = iwch_post_receive;
1455 dev->ibdev.get_protocol_stats = iwch_get_mib;
1456 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
1457 dev->ibdev.get_port_immutable = iwch_port_immutable;
1458
1459 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1460 if (!dev->ibdev.iwcm)
1461 return -ENOMEM;
1462
1463 dev->ibdev.iwcm->connect = iwch_connect;
1464 dev->ibdev.iwcm->accept = iwch_accept_cr;
1465 dev->ibdev.iwcm->reject = iwch_reject_cr;
1466 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1467 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1468 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1469 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1470 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1471
1472 ret = ib_register_device(&dev->ibdev, NULL);
1473 if (ret)
1474 goto bail1;
1475
1476 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1477 ret = device_create_file(&dev->ibdev.dev,
1478 iwch_class_attributes[i]);
1479 if (ret) {
1480 goto bail2;
1481 }
1482 }
1483 return 0;
1484 bail2:
1485 ib_unregister_device(&dev->ibdev);
1486 bail1:
1487 kfree(dev->ibdev.iwcm);
1488 return ret;
1489 }
1490
1491 void iwch_unregister_device(struct iwch_dev *dev)
1492 {
1493 int i;
1494
1495 PDBG("%s iwch_dev %p\n", __func__, dev);
1496 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1497 device_remove_file(&dev->ibdev.dev,
1498 iwch_class_attributes[i]);
1499 ib_unregister_device(&dev->ibdev);
1500 kfree(dev->ibdev.iwcm);
1501 return;
1502 }
Linux kernel - Deliverables
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