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IB/core: Change provider's API of create_cq to be extendible
[deliverable/linux.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
CommitLineData
b038ced7
SW		 1/*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
b038ced7
SW		 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>
d43c36dc 40#include <linux/sched.h>
b038ced7
SW		 41#include <linux/spinlock.h>
42#include <linux/ethtool.h>
7f049f2f 43#include <linux/rtnetlink.h>
7ab1a2b3 44#include <linux/inetdevice.h>
5a0e3ad6 45#include <linux/slab.h>
b038ced7
SW		 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>
f7c6a7b5 54#include <rdma/ib_umem.h>
b038ced7
SW		 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"
14cc180f 62#include "common.h"
b038ced7 63
b038ced7
SW		 64static 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
70static int iwch_ah_destroy(struct ib_ah *ah)
71{
72 return -ENOSYS;
73}
74
75static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
76{
77 return -ENOSYS;
78}
79
80static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
81{
82 return -ENOSYS;
83}
84
85static int iwch_process_mad(struct ib_device *ibdev,
86 int mad_flags,
87 u8 port_num,
a97e2d86
IW		 88 const struct ib_wc *in_wc,
89 const struct ib_grh *in_grh,
90 const struct ib_mad *in_mad, struct ib_mad *out_mad)
b038ced7
SW		 91{
92 return -ENOSYS;
93}
94
95static int iwch_dealloc_ucontext(struct ib_ucontext *context)
96{
97 struct iwch_dev *rhp = to_iwch_dev(context->device);
98 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
99 struct iwch_mm_entry *mm, *tmp;
100
33718363 101 PDBG("%s context %p\n", __func__, context);
b038ced7
SW		 102 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
103 kfree(mm);
104 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
105 kfree(ucontext);
106 return 0;
107}
108
109static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
110 struct ib_udata *udata)
111{
112 struct iwch_ucontext *context;
113 struct iwch_dev *rhp = to_iwch_dev(ibdev);
114
33718363 115 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7
SW		 116 context = kzalloc(sizeof(*context), GFP_KERNEL);
117 if (!context)
118 return ERR_PTR(-ENOMEM);
119 cxio_init_ucontext(&rhp->rdev, &context->uctx);
120 INIT_LIST_HEAD(&context->mmaps);
121 spin_lock_init(&context->mmap_lock);
122 return &context->ibucontext;
123}
124
125static int iwch_destroy_cq(struct ib_cq *ib_cq)
126{
127 struct iwch_cq *chp;
128
33718363 129 PDBG("%s ib_cq %p\n", __func__, ib_cq);
b038ced7
SW		 130 chp = to_iwch_cq(ib_cq);
131
132 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
133 atomic_dec(&chp->refcnt);
134 wait_event(chp->wait, !atomic_read(&chp->refcnt));
135
136 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
137 kfree(chp);
138 return 0;
139}
140
bcf4c1ea
MB		 141static struct ib_cq *iwch_create_cq(struct ib_device *ibdev,
142 const struct ib_cq_init_attr *attr,
143 struct ib_ucontext *ib_context,
144 struct ib_udata *udata)
b038ced7 145{
bcf4c1ea 146 int entries = attr->cqe;
b038ced7
SW		 147 struct iwch_dev *rhp;
148 struct iwch_cq *chp;
149 struct iwch_create_cq_resp uresp;
150 struct iwch_create_cq_req ureq;
151 struct iwch_ucontext *ucontext = NULL;
b955150e
SW		 152 static int warned;
153 size_t resplen;
b038ced7 154
33718363 155 PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
bcf4c1ea
MB		 156 if (attr->flags)
157 return ERR_PTR(-EINVAL);
158
b038ced7
SW		 159 rhp = to_iwch_dev(ibdev);
160 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
161 if (!chp)
162 return ERR_PTR(-ENOMEM);
163
164 if (ib_context) {
165 ucontext = to_iwch_ucontext(ib_context);
166 if (!t3a_device(rhp)) {
167 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
168 kfree(chp);
169 return ERR_PTR(-EFAULT);
170 }
171 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
172 }
173 }
174
175 if (t3a_device(rhp)) {
176
177 /*
178 * T3A: Add some fluff to handle extra CQEs inserted
179 * for various errors.
180 * Additional CQE possibilities:
181 * TERMINATE,
182 * incoming RDMA WRITE Failures
183 * incoming RDMA READ REQUEST FAILUREs
184 * NOTE: We cannot ensure the CQ won't overflow.
185 */
186 entries += 16;
187 }
188 entries = roundup_pow_of_two(entries);
189 chp->cq.size_log2 = ilog2(entries);
190
5279d3ac 191 if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
b038ced7
SW		 192 kfree(chp);
193 return ERR_PTR(-ENOMEM);
194 }
195 chp->rhp = rhp;
4fa45725 196 chp->ibcq.cqe = 1 << chp->cq.size_log2;
b038ced7 197 spin_lock_init(&chp->lock);
f7cc25d0 198 spin_lock_init(&chp->comp_handler_lock);
b038ced7
SW		 199 atomic_set(&chp->refcnt, 1);
200 init_waitqueue_head(&chp->wait);
13a23933
SW		 201 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
202 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
203 kfree(chp);
204 return ERR_PTR(-ENOMEM);
205 }
b038ced7
SW		 206
207 if (ucontext) {
208 struct iwch_mm_entry *mm;
209
210 mm = kmalloc(sizeof *mm, GFP_KERNEL);
211 if (!mm) {
212 iwch_destroy_cq(&chp->ibcq);
213 return ERR_PTR(-ENOMEM);
214 }
215 uresp.cqid = chp->cq.cqid;
216 uresp.size_log2 = chp->cq.size_log2;
217 spin_lock(&ucontext->mmap_lock);
218 uresp.key = ucontext->key;
219 ucontext->key += PAGE_SIZE;
220 spin_unlock(&ucontext->mmap_lock);
b955150e
SW		 221 mm->key = uresp.key;
222 mm->addr = virt_to_phys(chp->cq.queue);
223 if (udata->outlen < sizeof uresp) {
224 if (!warned++)
225 printk(KERN_WARNING MOD "Warning - "
226 "downlevel libcxgb3 (non-fatal).\n");
227 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
228 sizeof(struct t3_cqe));
229 resplen = sizeof(struct iwch_create_cq_resp_v0);
230 } else {
231 mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
232 sizeof(struct t3_cqe));
233 uresp.memsize = mm->len;
246fcdbc 234 uresp.reserved = 0;
b955150e
SW		 235 resplen = sizeof uresp;
236 }
237 if (ib_copy_to_udata(udata, &uresp, resplen)) {
b038ced7
SW		 238 kfree(mm);
239 iwch_destroy_cq(&chp->ibcq);
240 return ERR_PTR(-EFAULT);
241 }
b038ced7
SW		 242 insert_mmap(ucontext, mm);
243 }
244 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
245 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
246 (unsigned long long) chp->cq.dma_addr);
247 return &chp->ibcq;
248}
249
250static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
251{
252#ifdef notyet
253 struct iwch_cq *chp = to_iwch_cq(cq);
254 struct t3_cq oldcq, newcq;
255 int ret;
256
33718363 257 PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
b038ced7
SW		 258
259 /* We don't downsize... */
260 if (cqe <= cq->cqe)
261 return 0;
262
263 /* create new t3_cq with new size */
264 cqe = roundup_pow_of_two(cqe+1);
265 newcq.size_log2 = ilog2(cqe);
266
267 /* Dont allow resize to less than the current wce count */
268 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
269 return -ENOMEM;
270 }
271
272 /* Quiesce all QPs using this CQ */
273 ret = iwch_quiesce_qps(chp);
274 if (ret) {
275 return ret;
276 }
277
278 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
279 if (ret) {
280 return ret;
281 }
282
283 /* copy CQEs */
284 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
285 sizeof(struct t3_cqe));
286
287 /* old iwch_qp gets new t3_cq but keeps old cqid */
288 oldcq = chp->cq;
289 chp->cq = newcq;
290 chp->cq.cqid = oldcq.cqid;
291
292 /* resize new t3_cq to update the HW context */
293 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
294 if (ret) {
295 chp->cq = oldcq;
296 return ret;
297 }
298 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
299
300 /* destroy old t3_cq */
301 oldcq.cqid = newcq.cqid;
302 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
303 if (ret) {
304 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
33718363 305 __func__, ret);
b038ced7
SW		 306 }
307
308 /* add user hooks here */
309
310 /* resume qps */
311 ret = iwch_resume_qps(chp);
312 return ret;
313#else
314 return -ENOSYS;
315#endif
316}
317
ed23a727 318static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
b038ced7
SW		 319{
320 struct iwch_dev *rhp;
321 struct iwch_cq *chp;
322 enum t3_cq_opcode cq_op;
323 int err;
324 unsigned long flag;
325 u32 rptr;
326
327 chp = to_iwch_cq(ibcq);
328 rhp = chp->rhp;
ed23a727 329 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
b038ced7
SW		 330 cq_op = CQ_ARM_SE;
331 else
332 cq_op = CQ_ARM_AN;
333 if (chp->user_rptr_addr) {
334 if (get_user(rptr, chp->user_rptr_addr))
335 return -EFAULT;
336 spin_lock_irqsave(&chp->lock, flag);
337 chp->cq.rptr = rptr;
338 } else
339 spin_lock_irqsave(&chp->lock, flag);
33718363 340 PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
b038ced7
SW		 341 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
342 spin_unlock_irqrestore(&chp->lock, flag);
ed23a727 343 if (err < 0)
b038ced7
SW		 344 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
345 chp->cq.cqid);
ed23a727
RD		 346 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
347 err = 0;
b038ced7
SW		 348 return err;
349}
350
351static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
352{
353 int len = vma->vm_end - vma->vm_start;
354 u32 key = vma->vm_pgoff << PAGE_SHIFT;
355 struct cxio_rdev *rdev_p;
356 int ret = 0;
357 struct iwch_mm_entry *mm;
358 struct iwch_ucontext *ucontext;
aeb100e2 359 u64 addr;
b038ced7 360
33718363 361 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
b038ced7
SW		 362 key, len);
363
364 if (vma->vm_start & (PAGE_SIZE-1)) {
365 return -EINVAL;
366 }
367
368 rdev_p = &(to_iwch_dev(context->device)->rdev);
369 ucontext = to_iwch_ucontext(context);
370
371 mm = remove_mmap(ucontext, key, len);
372 if (!mm)
373 return -EINVAL;
aeb100e2 374 addr = mm->addr;
b038ced7
SW		 375 kfree(mm);
376
aeb100e2
SW		 377 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
378 (addr < (rdev_p->rnic_info.udbell_physbase +
b038ced7
SW		 379 rdev_p->rnic_info.udbell_len))) {
380
381 /*
382 * Map T3 DB register.
383 */
384 if (vma->vm_flags & VM_READ) {
385 return -EPERM;
386 }
387
388 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
389 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
390 vma->vm_flags &= ~VM_MAYREAD;
391 ret = io_remap_pfn_range(vma, vma->vm_start,
aeb100e2 392 addr >> PAGE_SHIFT,
b038ced7
SW		 393 len, vma->vm_page_prot);
394 } else {
395
396 /*
397 * Map WQ or CQ contig dma memory...
398 */
399 ret = remap_pfn_range(vma, vma->vm_start,
aeb100e2 400 addr >> PAGE_SHIFT,
b038ced7
SW		 401 len, vma->vm_page_prot);
402 }
403
404 return ret;
405}
406
407static int iwch_deallocate_pd(struct ib_pd *pd)
408{
409 struct iwch_dev *rhp;
410 struct iwch_pd *php;
411
412 php = to_iwch_pd(pd);
413 rhp = php->rhp;
33718363 414 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
b038ced7
SW		 415 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
416 kfree(php);
417 return 0;
418}
419
420static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
421 struct ib_ucontext *context,
422 struct ib_udata *udata)
423{
424 struct iwch_pd *php;
425 u32 pdid;
426 struct iwch_dev *rhp;
427
33718363 428 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7
SW		 429 rhp = (struct iwch_dev *) ibdev;
430 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
431 if (!pdid)
432 return ERR_PTR(-EINVAL);
433 php = kzalloc(sizeof(*php), GFP_KERNEL);
434 if (!php) {
435 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
436 return ERR_PTR(-ENOMEM);
437 }
438 php->pdid = pdid;
439 php->rhp = rhp;
440 if (context) {
441 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
442 iwch_deallocate_pd(&php->ibpd);
443 return ERR_PTR(-EFAULT);
444 }
445 }
33718363 446 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
b038ced7
SW		 447 return &php->ibpd;
448}
449
450static int iwch_dereg_mr(struct ib_mr *ib_mr)
451{
452 struct iwch_dev *rhp;
453 struct iwch_mr *mhp;
454 u32 mmid;
455
33718363 456 PDBG("%s ib_mr %p\n", __func__, ib_mr);
b038ced7
SW		 457 /* There can be no memory windows */
458 if (atomic_read(&ib_mr->usecnt))
459 return -EINVAL;
460
461 mhp = to_iwch_mr(ib_mr);
462 rhp = mhp->rhp;
463 mmid = mhp->attr.stag >> 8;
464 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
465 mhp->attr.pbl_addr);
273748cc 466 iwch_free_pbl(mhp);
b038ced7
SW		 467 remove_handle(rhp, &rhp->mmidr, mmid);
468 if (mhp->kva)
469 kfree((void *) (unsigned long) mhp->kva);
f7c6a7b5
RD		 470 if (mhp->umem)
471 ib_umem_release(mhp->umem);
33718363 472 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
b038ced7
SW		 473 kfree(mhp);
474 return 0;
475}
476
477static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
478 struct ib_phys_buf *buffer_list,
479 int num_phys_buf,
480 int acc,
481 u64 *iova_start)
482{
483 __be64 *page_list;
484 int shift;
485 u64 total_size;
486 int npages;
487 struct iwch_dev *rhp;
488 struct iwch_pd *php;
489 struct iwch_mr *mhp;
490 int ret;
491
33718363 492 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 493 php = to_iwch_pd(pd);
494 rhp = php->rhp;
495
b038ced7
SW		 496 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
497 if (!mhp)
498 return ERR_PTR(-ENOMEM);
499
273748cc
RD		 500 mhp->rhp = rhp;
501
b038ced7
SW		 502 /* First check that we have enough alignment */
503 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
504 ret = -EINVAL;
505 goto err;
506 }
507
508 if (num_phys_buf > 1 &&
509 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
510 ret = -EINVAL;
511 goto err;
512 }
513
514 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
515 &total_size, &npages, &shift, &page_list);
516 if (ret)
517 goto err;
518
273748cc
RD		 519 ret = iwch_alloc_pbl(mhp, npages);
520 if (ret) {
521 kfree(page_list);
522 goto err_pbl;
523 }
524
525 ret = iwch_write_pbl(mhp, page_list, npages, 0);
526 kfree(page_list);
527 if (ret)
528 goto err_pbl;
529
b038ced7
SW		 530 mhp->attr.pdid = php->pdid;
531 mhp->attr.zbva = 0;
532
e64518f3 533 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
b038ced7
SW		 534 mhp->attr.va_fbo = *iova_start;
535 mhp->attr.page_size = shift - 12;
536
537 mhp->attr.len = (u32) total_size;
538 mhp->attr.pbl_size = npages;
273748cc
RD		 539 ret = iwch_register_mem(rhp, php, mhp, shift);
540 if (ret)
541 goto err_pbl;
542
b038ced7 543 return &mhp->ibmr;
273748cc
RD		 544
545err_pbl:
546 iwch_free_pbl(mhp);
547
b038ced7
SW		 548err:
549 kfree(mhp);
550 return ERR_PTR(ret);
551
552}
553
554static int iwch_reregister_phys_mem(struct ib_mr *mr,
555 int mr_rereg_mask,
556 struct ib_pd *pd,
557 struct ib_phys_buf *buffer_list,
558 int num_phys_buf,
559 int acc, u64 * iova_start)
560{
561
562 struct iwch_mr mh, *mhp;
563 struct iwch_pd *php;
564 struct iwch_dev *rhp;
b038ced7
SW		 565 __be64 *page_list = NULL;
566 int shift = 0;
567 u64 total_size;
bc4ba94c 568 int npages = 0;
b038ced7
SW		 569 int ret;
570
33718363 571 PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
b038ced7
SW		 572
573 /* There can be no memory windows */
574 if (atomic_read(&mr->usecnt))
575 return -EINVAL;
576
577 mhp = to_iwch_mr(mr);
578 rhp = mhp->rhp;
579 php = to_iwch_pd(mr->pd);
580
581 /* make sure we are on the same adapter */
582 if (rhp != php->rhp)
583 return -EINVAL;
584
b038ced7
SW		 585 memcpy(&mh, mhp, sizeof *mhp);
586
587 if (mr_rereg_mask & IB_MR_REREG_PD)
588 php = to_iwch_pd(pd);
589 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
e64518f3 590 mh.attr.perms = iwch_ib_to_tpt_access(acc);
d6013471 591 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
b038ced7
SW		 592 ret = build_phys_page_list(buffer_list, num_phys_buf,
593 iova_start,
594 &total_size, &npages,
595 &shift, &page_list);
d6013471
SW		 596 if (ret)
597 return ret;
598 }
b038ced7 599
273748cc 600 ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
b038ced7
SW		 601 kfree(page_list);
602 if (ret) {
603 return ret;
604 }
605 if (mr_rereg_mask & IB_MR_REREG_PD)
606 mhp->attr.pdid = php->pdid;
607 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
e64518f3 608 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
b038ced7
SW		 609 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
610 mhp->attr.zbva = 0;
611 mhp->attr.va_fbo = *iova_start;
612 mhp->attr.page_size = shift - 12;
613 mhp->attr.len = (u32) total_size;
614 mhp->attr.pbl_size = npages;
615 }
616
617 return 0;
618}
619
620
f7c6a7b5
RD		 621static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
622 u64 virt, int acc, struct ib_udata *udata)
b038ced7
SW		 623{
624 __be64 *pages;
625 int shift, n, len;
eeb8461e 626 int i, k, entry;
b038ced7 627 int err = 0;
b038ced7
SW		 628 struct iwch_dev *rhp;
629 struct iwch_pd *php;
630 struct iwch_mr *mhp;
631 struct iwch_reg_user_mr_resp uresp;
eeb8461e 632 struct scatterlist *sg;
33718363 633 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 634
635 php = to_iwch_pd(pd);
636 rhp = php->rhp;
637 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
638 if (!mhp)
639 return ERR_PTR(-ENOMEM);
640
273748cc
RD		 641 mhp->rhp = rhp;
642
cb9fbc5c 643 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
f7c6a7b5
RD		 644 if (IS_ERR(mhp->umem)) {
645 err = PTR_ERR(mhp->umem);
646 kfree(mhp);
647 return ERR_PTR(err);
648 }
649
650 shift = ffs(mhp->umem->page_size) - 1;
651
eeb8461e 652 n = mhp->umem->nmap;
b038ced7 653
273748cc
RD		 654 err = iwch_alloc_pbl(mhp, n);
655 if (err)
656 goto err;
657
658 pages = (__be64 *) __get_free_page(GFP_KERNEL);
b038ced7
SW		 659 if (!pages) {
660 err = -ENOMEM;
273748cc 661 goto err_pbl;
b038ced7
SW		 662 }
663
b038ced7
SW		 664 i = n = 0;
665
eeb8461e
YH		 666 for_each_sg(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) {
667 len = sg_dma_len(sg) >> shift;
b038ced7 668 for (k = 0; k < len; ++k) {
eeb8461e 669 pages[i++] = cpu_to_be64(sg_dma_address(sg) +
f7c6a7b5 670 mhp->umem->page_size * k);
273748cc
RD		 671 if (i == PAGE_SIZE / sizeof *pages) {
672 err = iwch_write_pbl(mhp, pages, i, n);
673 if (err)
674 goto pbl_done;
675 n += i;
676 i = 0;
677 }
b038ced7 678 }
eeb8461e 679 }
b038ced7 680
273748cc
RD		 681 if (i)
682 err = iwch_write_pbl(mhp, pages, i, n);
683
684pbl_done:
685 free_page((unsigned long) pages);
686 if (err)
687 goto err_pbl;
688
b038ced7
SW		 689 mhp->attr.pdid = php->pdid;
690 mhp->attr.zbva = 0;
e64518f3 691 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
f7c6a7b5 692 mhp->attr.va_fbo = virt;
b038ced7 693 mhp->attr.page_size = shift - 12;
f7c6a7b5 694 mhp->attr.len = (u32) length;
273748cc
RD		 695
696 err = iwch_register_mem(rhp, php, mhp, shift);
b038ced7 697 if (err)
273748cc 698 goto err_pbl;
b038ced7 699
8176d297 700 if (udata && !t3a_device(rhp)) {
b038ced7 701 uresp.pbl_addr = (mhp->attr.pbl_addr -
273748cc 702 rhp->rdev.rnic_info.pbl_base) >> 3;
33718363 703 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
b038ced7
SW		 704 uresp.pbl_addr);
705
706 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
707 iwch_dereg_mr(&mhp->ibmr);
708 err = -EFAULT;
709 goto err;
710 }
711 }
712
713 return &mhp->ibmr;
714
273748cc
RD		 715err_pbl:
716 iwch_free_pbl(mhp);
717
b038ced7 718err:
f7c6a7b5 719 ib_umem_release(mhp->umem);
b038ced7
SW		 720 kfree(mhp);
721 return ERR_PTR(err);
722}
723
724static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
725{
726 struct ib_phys_buf bl;
727 u64 kva;
728 struct ib_mr *ibmr;
729
33718363 730 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 731
732 /*
733 * T3 only supports 32 bits of size.
734 */
735 bl.size = 0xffffffff;
736 bl.addr = 0;
737 kva = 0;
738 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
739 return ibmr;
740}
741
7083e42e 742static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
b038ced7
SW		 743{
744 struct iwch_dev *rhp;
745 struct iwch_pd *php;
746 struct iwch_mw *mhp;
747 u32 mmid;
748 u32 stag = 0;
749 int ret;
750
7083e42e
SM		 751 if (type != IB_MW_TYPE_1)
752 return ERR_PTR(-EINVAL);
753
b038ced7
SW		 754 php = to_iwch_pd(pd);
755 rhp = php->rhp;
756 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
757 if (!mhp)
758 return ERR_PTR(-ENOMEM);
759 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
760 if (ret) {
761 kfree(mhp);
762 return ERR_PTR(ret);
763 }
764 mhp->rhp = rhp;
765 mhp->attr.pdid = php->pdid;
766 mhp->attr.type = TPT_MW;
767 mhp->attr.stag = stag;
768 mmid = (stag) >> 8;
70fe1796 769 mhp->ibmw.rkey = stag;
13a23933
SW		 770 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
771 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
772 kfree(mhp);
773 return ERR_PTR(-ENOMEM);
774 }
33718363 775 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
b038ced7
SW		 776 return &(mhp->ibmw);
777}
778
779static int iwch_dealloc_mw(struct ib_mw *mw)
780{
781 struct iwch_dev *rhp;
782 struct iwch_mw *mhp;
783 u32 mmid;
784
785 mhp = to_iwch_mw(mw);
786 rhp = mhp->rhp;
787 mmid = (mw->rkey) >> 8;
788 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
789 remove_handle(rhp, &rhp->mmidr, mmid);
33718363 790 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
fe194f19 791 kfree(mhp);
b038ced7
SW		 792 return 0;
793}
794
e7e55829
SW		 795static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
796{
797 struct iwch_dev *rhp;
798 struct iwch_pd *php;
799 struct iwch_mr *mhp;
800 u32 mmid;
801 u32 stag = 0;
13a23933 802 int ret = 0;
e7e55829
SW		 803
804 php = to_iwch_pd(pd);
805 rhp = php->rhp;
806 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
807 if (!mhp)
13a23933 808 goto err;
e7e55829
SW		 809
810 mhp->rhp = rhp;
811 ret = iwch_alloc_pbl(mhp, pbl_depth);
13a23933
SW		 812 if (ret)
813 goto err1;
e7e55829
SW		 814 mhp->attr.pbl_size = pbl_depth;
815 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
816 mhp->attr.pbl_size, mhp->attr.pbl_addr);
13a23933
SW		 817 if (ret)
818 goto err2;
e7e55829
SW		 819 mhp->attr.pdid = php->pdid;
820 mhp->attr.type = TPT_NON_SHARED_MR;
821 mhp->attr.stag = stag;
822 mhp->attr.state = 1;
823 mmid = (stag) >> 8;
824 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
13a23933
SW		 825 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
826 goto err3;
827
e7e55829
SW		 828 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
829 return &(mhp->ibmr);
13a23933
SW		 830err3:
831 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
832 mhp->attr.pbl_addr);
833err2:
834 iwch_free_pbl(mhp);
835err1:
836 kfree(mhp);
837err:
838 return ERR_PTR(ret);
e7e55829
SW		 839}
840
841static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
842 struct ib_device *device,
843 int page_list_len)
844{
845 struct ib_fast_reg_page_list *page_list;
846
847 page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
848 GFP_KERNEL);
849 if (!page_list)
850 return ERR_PTR(-ENOMEM);
851
852 page_list->page_list = (u64 *)(page_list + 1);
853 page_list->max_page_list_len = page_list_len;
854
855 return page_list;
856}
857
858static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
859{
860 kfree(page_list);
861}
862
b038ced7
SW		 863static int iwch_destroy_qp(struct ib_qp *ib_qp)
864{
865 struct iwch_dev *rhp;
866 struct iwch_qp *qhp;
867 struct iwch_qp_attributes attrs;
868 struct iwch_ucontext *ucontext;
869
870 qhp = to_iwch_qp(ib_qp);
871 rhp = qhp->rhp;
872
2df50da0
SW		 873 attrs.next_state = IWCH_QP_STATE_ERROR;
874 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
b038ced7
SW		 875 wait_event(qhp->wait, !qhp->ep);
876
877 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
878
879 atomic_dec(&qhp->refcnt);
880 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
881
882 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
883 : NULL;
884 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
885 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
886
33718363 887 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
b038ced7
SW		 888 ib_qp, qhp->wq.qpid, qhp);
889 kfree(qhp);
890 return 0;
891}
892
893static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
894 struct ib_qp_init_attr *attrs,
895 struct ib_udata *udata)
896{
897 struct iwch_dev *rhp;
898 struct iwch_qp *qhp;
899 struct iwch_pd *php;
900 struct iwch_cq *schp;
901 struct iwch_cq *rchp;
902 struct iwch_create_qp_resp uresp;
903 int wqsize, sqsize, rqsize;
904 struct iwch_ucontext *ucontext;
905
33718363 906 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 907 if (attrs->qp_type != IB_QPT_RC)
908 return ERR_PTR(-EINVAL);
909 php = to_iwch_pd(pd);
910 rhp = php->rhp;
911 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
912 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
913 if (!schp || !rchp)
914 return ERR_PTR(-EINVAL);
915
916 /* The RQT size must be # of entries + 1 rounded up to a power of two */
917 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
918 if (rqsize == attrs->cap.max_recv_wr)
919 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
920
921 /* T3 doesn't support RQT depth < 16 */
922 if (rqsize < 16)
923 rqsize = 16;
924
925 if (rqsize > T3_MAX_RQ_SIZE)
926 return ERR_PTR(-EINVAL);
927
1860cdf8
SW		 928 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
929 return ERR_PTR(-EINVAL);
930
b038ced7
SW		 931 /*
932 * NOTE: The SQ and total WQ sizes don't need to be
933 * a power of two. However, all the code assumes
934 * they are. EG: Q_FREECNT() and friends.
935 */
936 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
937 wqsize = roundup_pow_of_two(rqsize + sqsize);
e7e55829
SW		 938
939 /*
940 * Kernel users need more wq space for fastreg WRs which can take
941 * 2 WR fragments.
942 */
943 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
944 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
945 wqsize = roundup_pow_of_two(rqsize +
946 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
33718363 947 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
b038ced7
SW		 948 wqsize, sqsize, rqsize);
949 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
950 if (!qhp)
951 return ERR_PTR(-ENOMEM);
952 qhp->wq.size_log2 = ilog2(wqsize);
953 qhp->wq.rq_size_log2 = ilog2(rqsize);
954 qhp->wq.sq_size_log2 = ilog2(sqsize);
b038ced7
SW		 955 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
956 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
957 kfree(qhp);
958 return ERR_PTR(-ENOMEM);
959 }
1bab74e6 960
b038ced7
SW		 961 attrs->cap.max_recv_wr = rqsize - 1;
962 attrs->cap.max_send_wr = sqsize;
1bab74e6
JM		 963 attrs->cap.max_inline_data = T3_MAX_INLINE;
964
b038ced7
SW		 965 qhp->rhp = rhp;
966 qhp->attr.pd = php->pdid;
967 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
968 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
969 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
970 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
971 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
972 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
973 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
974 qhp->attr.state = IWCH_QP_STATE_IDLE;
975 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
976
977 /*
978 * XXX - These don't get passed in from the openib user
979 * at create time. The CM sets them via a QP modify.
980 * Need to fix... I think the CM should
981 */
982 qhp->attr.enable_rdma_read = 1;
983 qhp->attr.enable_rdma_write = 1;
984 qhp->attr.enable_bind = 1;
985 qhp->attr.max_ord = 1;
986 qhp->attr.max_ird = 1;
987
988 spin_lock_init(&qhp->lock);
989 init_waitqueue_head(&qhp->wait);
990 atomic_set(&qhp->refcnt, 1);
13a23933
SW		 991
992 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
993 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
994 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
995 kfree(qhp);
996 return ERR_PTR(-ENOMEM);
997 }
b038ced7
SW		 998
999 if (udata) {
1000
1001 struct iwch_mm_entry *mm1, *mm2;
1002
1003 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
1004 if (!mm1) {
1005 iwch_destroy_qp(&qhp->ibqp);
1006 return ERR_PTR(-ENOMEM);
1007 }
1008
1009 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
1010 if (!mm2) {
1011 kfree(mm1);
1012 iwch_destroy_qp(&qhp->ibqp);
1013 return ERR_PTR(-ENOMEM);
1014 }
1015
1016 uresp.qpid = qhp->wq.qpid;
1017 uresp.size_log2 = qhp->wq.size_log2;
1018 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
1019 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
1020 spin_lock(&ucontext->mmap_lock);
1021 uresp.key = ucontext->key;
1022 ucontext->key += PAGE_SIZE;
1023 uresp.db_key = ucontext->key;
1024 ucontext->key += PAGE_SIZE;
1025 spin_unlock(&ucontext->mmap_lock);
1026 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
1027 kfree(mm1);
1028 kfree(mm2);
1029 iwch_destroy_qp(&qhp->ibqp);
1030 return ERR_PTR(-EFAULT);
1031 }
1032 mm1->key = uresp.key;
1033 mm1->addr = virt_to_phys(qhp->wq.queue);
1034 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1035 insert_mmap(ucontext, mm1);
1036 mm2->key = uresp.db_key;
1037 mm2->addr = qhp->wq.udb & PAGE_MASK;
1038 mm2->len = PAGE_SIZE;
1039 insert_mmap(ucontext, mm2);
1040 }
1041 qhp->ibqp.qp_num = qhp->wq.qpid;
1042 init_timer(&(qhp->timer));
1043 PDBG("%s sq_num_entries %d, rq_num_entries %d "
4ab928f6 1044 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
33718363 1045 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
b038ced7 1046 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
4ab928f6 1047 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
b038ced7
SW		 1048 return &qhp->ibqp;
1049}
1050
1051static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1052 int attr_mask, struct ib_udata *udata)
1053{
1054 struct iwch_dev *rhp;
1055 struct iwch_qp *qhp;
1056 enum iwch_qp_attr_mask mask = 0;
1057 struct iwch_qp_attributes attrs;
1058
33718363 1059 PDBG("%s ib_qp %p\n", __func__, ibqp);
b038ced7
SW		 1060
1061 /* iwarp does not support the RTR state */
1062 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1063 attr_mask &= ~IB_QP_STATE;
1064
1065 /* Make sure we still have something left to do */
1066 if (!attr_mask)
1067 return 0;
1068
1069 memset(&attrs, 0, sizeof attrs);
1070 qhp = to_iwch_qp(ibqp);
1071 rhp = qhp->rhp;
1072
1073 attrs.next_state = iwch_convert_state(attr->qp_state);
1074 attrs.enable_rdma_read = (attr->qp_access_flags &
1075 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1076 attrs.enable_rdma_write = (attr->qp_access_flags &
1077 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1078 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1079
1080
1081 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1082 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1083 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1084 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1085 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1086
1087 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1088}
1089
1090void iwch_qp_add_ref(struct ib_qp *qp)
1091{
33718363 1092 PDBG("%s ib_qp %p\n", __func__, qp);
b038ced7
SW		 1093 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1094}
1095
1096void iwch_qp_rem_ref(struct ib_qp *qp)
1097{
33718363 1098 PDBG("%s ib_qp %p\n", __func__, qp);
b038ced7
SW		 1099 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1100 wake_up(&(to_iwch_qp(qp)->wait));
1101}
1102
2b540355 1103static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
b038ced7 1104{
33718363 1105 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
b038ced7
SW		 1106 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1107}
1108
1109
1110static int iwch_query_pkey(struct ib_device *ibdev,
1111 u8 port, u16 index, u16 * pkey)
1112{
33718363 1113 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7
SW		 1114 *pkey = 0;
1115 return 0;
1116}
1117
1118static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1119 int index, union ib_gid *gid)
1120{
1121 struct iwch_dev *dev;
1122
1123 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
33718363 1124 __func__, ibdev, port, index, gid);
b038ced7
SW		 1125 dev = to_iwch_dev(ibdev);
1126 BUG_ON(port == 0 || port > 2);
1127 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1128 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1129 return 0;
1130}
1131
97d1cc80
SW		 1132static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1133{
1134 struct ethtool_drvinfo info;
1135 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1136 char *cp, *next;
1137 unsigned fw_maj, fw_min, fw_mic;
1138
97d1cc80 1139 lldev->ethtool_ops->get_drvinfo(lldev, &info);
97d1cc80
SW		 1140
1141 next = info.fw_version + 1;
1142 cp = strsep(&next, ".");
1143 sscanf(cp, "%i", &fw_maj);
1144 cp = strsep(&next, ".");
1145 sscanf(cp, "%i", &fw_min);
1146 cp = strsep(&next, ".");
1147 sscanf(cp, "%i", &fw_mic);
1148
1149 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1150 (fw_mic & 0xffff);
1151}
1152
b038ced7
SW		 1153static int iwch_query_device(struct ib_device *ibdev,
1154 struct ib_device_attr *props)
1155{
1156
1157 struct iwch_dev *dev;
33718363 1158 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7
SW		 1159
1160 dev = to_iwch_dev(ibdev);
1161 memset(props, 0, sizeof *props);
1162 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
97d1cc80
SW		 1163 props->hw_ver = dev->rdev.t3cdev_p->type;
1164 props->fw_ver = fw_vers_string_to_u64(dev);
b038ced7 1165 props->device_cap_flags = dev->device_cap_flags;
52c8084b 1166 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
b038ced7
SW		 1167 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1168 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
ccaf10d0 1169 props->max_mr_size = dev->attr.max_mr_size;
b038ced7
SW		 1170 props->max_qp = dev->attr.max_qps;
1171 props->max_qp_wr = dev->attr.max_wrs;
1172 props->max_sge = dev->attr.max_sge_per_wr;
1173 props->max_sge_rd = 1;
1174 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
9a766649 1175 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
b038ced7
SW		 1176 props->max_cq = dev->attr.max_cqs;
1177 props->max_cqe = dev->attr.max_cqes_per_cq;
1178 props->max_mr = dev->attr.max_mem_regs;
1179 props->max_pd = dev->attr.max_pds;
1180 props->local_ca_ack_delay = 0;
e7e55829 1181 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
b038ced7
SW		 1182
1183 return 0;
1184}
1185
1186static int iwch_query_port(struct ib_device *ibdev,
1187 u8 port, struct ib_port_attr *props)
1188{
7ab1a2b3
SW		 1189 struct iwch_dev *dev;
1190 struct net_device *netdev;
1191 struct in_device *inetdev;
1192
33718363 1193 PDBG("%s ibdev %p\n", __func__, ibdev);
c752c782 1194
7ab1a2b3
SW		 1195 dev = to_iwch_dev(ibdev);
1196 netdev = dev->rdev.port_info.lldevs[port-1];
1197
c752c782 1198 memset(props, 0, sizeof(struct ib_port_attr));
b038ced7 1199 props->max_mtu = IB_MTU_4096;
7ab1a2b3
SW		 1200 if (netdev->mtu >= 4096)
1201 props->active_mtu = IB_MTU_4096;
1202 else if (netdev->mtu >= 2048)
1203 props->active_mtu = IB_MTU_2048;
1204 else if (netdev->mtu >= 1024)
1205 props->active_mtu = IB_MTU_1024;
1206 else if (netdev->mtu >= 512)
1207 props->active_mtu = IB_MTU_512;
1208 else
1209 props->active_mtu = IB_MTU_256;
1210
1211 if (!netif_carrier_ok(netdev))
1212 props->state = IB_PORT_DOWN;
1213 else {
1214 inetdev = in_dev_get(netdev);
e5da4ed8
SW		 1215 if (inetdev) {
1216 if (inetdev->ifa_list)
1217 props->state = IB_PORT_ACTIVE;
1218 else
1219 props->state = IB_PORT_INIT;
1220 in_dev_put(inetdev);
1221 } else
7ab1a2b3 1222 props->state = IB_PORT_INIT;
7ab1a2b3
SW		 1223 }
1224
b038ced7
SW		 1225 props->port_cap_flags =
1226 IB_PORT_CM_SUP |
1227 IB_PORT_SNMP_TUNNEL_SUP |
1228 IB_PORT_REINIT_SUP |
1229 IB_PORT_DEVICE_MGMT_SUP |
1230 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1231 props->gid_tbl_len = 1;
1232 props->pkey_tbl_len = 1;
b038ced7 1233 props->active_width = 2;
2e96691c 1234 props->active_speed = IB_SPEED_DDR;
b038ced7
SW		 1235 props->max_msg_sz = -1;
1236
1237 return 0;
1238}
1239
f4e91eb4
TJ		 1240static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1241 char *buf)
b038ced7 1242{
f4e91eb4
TJ		 1243 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1244 ibdev.dev);
1245 PDBG("%s dev 0x%p\n", __func__, dev);
1246 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
b038ced7
SW		 1247}
1248
f4e91eb4 1249static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
b038ced7 1250{
f4e91eb4
TJ		 1251 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1252 ibdev.dev);
b038ced7 1253 struct ethtool_drvinfo info;
f4e91eb4 1254 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
b038ced7 1255
f4e91eb4 1256 PDBG("%s dev 0x%p\n", __func__, dev);
b038ced7
SW		 1257 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1258 return sprintf(buf, "%s\n", info.fw_version);
1259}
1260
f4e91eb4
TJ		 1261static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1262 char *buf)
b038ced7 1263{
f4e91eb4
TJ		 1264 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1265 ibdev.dev);
b038ced7 1266 struct ethtool_drvinfo info;
f4e91eb4 1267 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
b038ced7 1268
f4e91eb4 1269 PDBG("%s dev 0x%p\n", __func__, dev);
b038ced7
SW		 1270 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1271 return sprintf(buf, "%s\n", info.driver);
1272}
1273
f4e91eb4
TJ		 1274static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1275 char *buf)
b038ced7 1276{
f4e91eb4
TJ		 1277 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1278 ibdev.dev);
1279 PDBG("%s dev 0x%p\n", __func__, dev);
1280 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1281 iwch_dev->rdev.rnic_info.pdev->device);
b038ced7
SW		 1282}
1283
14cc180f
SW		 1284static int iwch_get_mib(struct ib_device *ibdev,
1285 union rdma_protocol_stats *stats)
1286{
1287 struct iwch_dev *dev;
1288 struct tp_mib_stats m;
1289 int ret;
1290
1291 PDBG("%s ibdev %p\n", __func__, ibdev);
1292 dev = to_iwch_dev(ibdev);
1293 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1294 if (ret)
1295 return -ENOSYS;
1296
1297 memset(stats, 0, sizeof *stats);
1298 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1299 m.ipInReceive_lo;
1300 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1301 m.ipInHdrErrors_lo;
1302 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1303 m.ipInAddrErrors_lo;
1304 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1305 m.ipInUnknownProtos_lo;
1306 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1307 m.ipInDiscards_lo;
1308 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1309 m.ipInDelivers_lo;
1310 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1311 m.ipOutRequests_lo;
1312 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1313 m.ipOutDiscards_lo;
1314 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1315 m.ipOutNoRoutes_lo;
1316 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1317 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1318 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1319 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1320 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1321 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1322 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1323 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1324 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1325 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1326 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1327 m.tcpInSegs_lo;
1328 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1329 m.tcpOutSegs_lo;
1330 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1331 m.tcpRetransSeg_lo;
1332 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1333 m.tcpInErrs_lo;
1334 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1335 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1336 return 0;
1337}
1338
f4e91eb4
TJ		 1339static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1340static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1341static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1342static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
b038ced7 1343
f4e91eb4
TJ		 1344static struct device_attribute *iwch_class_attributes[] = {
1345 &dev_attr_hw_rev,
1346 &dev_attr_fw_ver,
1347 &dev_attr_hca_type,
14cc180f 1348 &dev_attr_board_id,
b038ced7
SW		 1349};
1350
7738613e
IW		 1351static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
1352 struct ib_port_immutable *immutable)
1353{
1354 struct ib_port_attr attr;
1355 int err;
1356
1357 err = iwch_query_port(ibdev, port_num, &attr);
1358 if (err)
1359 return err;
1360
1361 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1362 immutable->gid_tbl_len = attr.gid_tbl_len;
f9b22e35 1363 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
7738613e
IW		 1364
1365 return 0;
1366}
1367
b038ced7
SW		 1368int iwch_register_device(struct iwch_dev *dev)
1369{
1370 int ret;
1371 int i;
1372
33718363 1373 PDBG("%s iwch_dev %p\n", __func__, dev);
b038ced7
SW		 1374 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1375 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1376 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1377 dev->ibdev.owner = THIS_MODULE;
be43324d
SW		 1378 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1379 IB_DEVICE_MEM_WINDOW |
1380 IB_DEVICE_MEM_MGT_EXTENSIONS;
96f15c03
SW		 1381
1382 /* cxgb3 supports STag 0. */
1383 dev->ibdev.local_dma_lkey = 0;
b038ced7
SW		 1384
1385 dev->ibdev.uverbs_cmd_mask =
1386 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1387 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1388 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1389 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1390 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1391 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1392 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1393 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1394 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1395 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1396 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1397 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1398 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1399 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1400 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1401 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1402 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1403 dev->ibdev.node_type = RDMA_NODE_RNIC;
1404 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1405 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
f4fd0b22 1406 dev->ibdev.num_comp_vectors = 1;
b038ced7 1407 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
b038ced7
SW		 1408 dev->ibdev.query_device = iwch_query_device;
1409 dev->ibdev.query_port = iwch_query_port;
b038ced7
SW		 1410 dev->ibdev.query_pkey = iwch_query_pkey;
1411 dev->ibdev.query_gid = iwch_query_gid;
1412 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1413 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1414 dev->ibdev.mmap = iwch_mmap;
1415 dev->ibdev.alloc_pd = iwch_allocate_pd;
1416 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1417 dev->ibdev.create_ah = iwch_ah_create;
1418 dev->ibdev.destroy_ah = iwch_ah_destroy;
1419 dev->ibdev.create_qp = iwch_create_qp;
1420 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1421 dev->ibdev.destroy_qp = iwch_destroy_qp;
1422 dev->ibdev.create_cq = iwch_create_cq;
1423 dev->ibdev.destroy_cq = iwch_destroy_cq;
1424 dev->ibdev.resize_cq = iwch_resize_cq;
1425 dev->ibdev.poll_cq = iwch_poll_cq;
1426 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1427 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1428 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1429 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1430 dev->ibdev.dereg_mr = iwch_dereg_mr;
1431 dev->ibdev.alloc_mw = iwch_alloc_mw;
1432 dev->ibdev.bind_mw = iwch_bind_mw;
1433 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
e7e55829
SW		 1434 dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
1435 dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1436 dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
b038ced7
SW		 1437 dev->ibdev.attach_mcast = iwch_multicast_attach;
1438 dev->ibdev.detach_mcast = iwch_multicast_detach;
1439 dev->ibdev.process_mad = iwch_process_mad;
b038ced7
SW		 1440 dev->ibdev.req_notify_cq = iwch_arm_cq;
1441 dev->ibdev.post_send = iwch_post_send;
1442 dev->ibdev.post_recv = iwch_post_receive;
14cc180f 1443 dev->ibdev.get_protocol_stats = iwch_get_mib;
b955150e 1444 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
7738613e 1445 dev->ibdev.get_port_immutable = iwch_port_immutable;
b038ced7 1446
6abb6ea8
WC		 1447 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1448 if (!dev->ibdev.iwcm)
1449 return -ENOMEM;
1450
b038ced7
SW		 1451 dev->ibdev.iwcm->connect = iwch_connect;
1452 dev->ibdev.iwcm->accept = iwch_accept_cr;
1453 dev->ibdev.iwcm->reject = iwch_reject_cr;
1454 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1455 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1456 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1457 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1458 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1459
9a6edb60 1460 ret = ib_register_device(&dev->ibdev, NULL);
b038ced7
SW		 1461 if (ret)
1462 goto bail1;
1463
1464 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
f4e91eb4
TJ		 1465 ret = device_create_file(&dev->ibdev.dev,
1466 iwch_class_attributes[i]);
b038ced7
SW		 1467 if (ret) {
1468 goto bail2;
1469 }
1470 }
1471 return 0;
1472bail2:
1473 ib_unregister_device(&dev->ibdev);
1474bail1:
3793d2fc 1475 kfree(dev->ibdev.iwcm);
b038ced7
SW		 1476 return ret;
1477}
1478
1479void iwch_unregister_device(struct iwch_dev *dev)
1480{
1481 int i;
1482
33718363 1483 PDBG("%s iwch_dev %p\n", __func__, dev);
b038ced7 1484 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
f4e91eb4
TJ		 1485 device_remove_file(&dev->ibdev.dev,
1486 iwch_class_attributes[i]);
b038ced7 1487 ib_unregister_device(&dev->ibdev);
3793d2fc 1488 kfree(dev->ibdev.iwcm);
b038ced7
SW		 1489 return;
1490}
Linux kernel - Deliverables
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