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