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RDMA/ocrdma: Support the new memory registration API
[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,
4cd7c947
IW		 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)
b038ced7
SW		 95{
96 return -ENOSYS;
97}
98
99static 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
33718363 105 PDBG("%s context %p\n", __func__, context);
b038ced7
SW		 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
113static 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
33718363 119 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7
SW		 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
129static int iwch_destroy_cq(struct ib_cq *ib_cq)
130{
131 struct iwch_cq *chp;
132
33718363 133 PDBG("%s ib_cq %p\n", __func__, ib_cq);
b038ced7
SW		 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
bcf4c1ea
MB		 145static 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)
b038ced7 149{
bcf4c1ea 150 int entries = attr->cqe;
b038ced7
SW		 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;
b955150e
SW		 156 static int warned;
157 size_t resplen;
b038ced7 158
33718363 159 PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
bcf4c1ea
MB		 160 if (attr->flags)
161 return ERR_PTR(-EINVAL);
162
b038ced7
SW		 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
5279d3ac 195 if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
b038ced7
SW		 196 kfree(chp);
197 return ERR_PTR(-ENOMEM);
198 }
199 chp->rhp = rhp;
4fa45725 200 chp->ibcq.cqe = 1 << chp->cq.size_log2;
b038ced7 201 spin_lock_init(&chp->lock);
f7cc25d0 202 spin_lock_init(&chp->comp_handler_lock);
b038ced7
SW		 203 atomic_set(&chp->refcnt, 1);
204 init_waitqueue_head(&chp->wait);
13a23933
SW		 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 }
b038ced7
SW		 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);
b955150e
SW		 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;
246fcdbc 238 uresp.reserved = 0;
b955150e
SW		 239 resplen = sizeof uresp;
240 }
241 if (ib_copy_to_udata(udata, &uresp, resplen)) {
b038ced7
SW		 242 kfree(mm);
243 iwch_destroy_cq(&chp->ibcq);
244 return ERR_PTR(-EFAULT);
245 }
b038ced7
SW		 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
254static 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
33718363 261 PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
b038ced7
SW		 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",
33718363 309 __func__, ret);
b038ced7
SW		 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
ed23a727 322static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
b038ced7
SW		 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;
ed23a727 333 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
b038ced7
SW		 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);
33718363 344 PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
b038ced7
SW		 345 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
346 spin_unlock_irqrestore(&chp->lock, flag);
ed23a727 347 if (err < 0)
b038ced7
SW		 348 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
349 chp->cq.cqid);
ed23a727
RD		 350 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
351 err = 0;
b038ced7
SW		 352 return err;
353}
354
355static 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;
aeb100e2 363 u64 addr;
b038ced7 364
33718363 365 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
b038ced7
SW		 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;
aeb100e2 378 addr = mm->addr;
b038ced7
SW		 379 kfree(mm);
380
aeb100e2
SW		 381 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
382 (addr < (rdev_p->rnic_info.udbell_physbase +
b038ced7
SW		 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,
aeb100e2 396 addr >> PAGE_SHIFT,
b038ced7
SW		 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,
aeb100e2 404 addr >> PAGE_SHIFT,
b038ced7
SW		 405 len, vma->vm_page_prot);
406 }
407
408 return ret;
409}
410
411static 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;
33718363 418 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
b038ced7
SW		 419 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
420 kfree(php);
421 return 0;
422}
423
424static 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
33718363 432 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7
SW		 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 }
33718363 450 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
b038ced7
SW		 451 return &php->ibpd;
452}
453
454static int iwch_dereg_mr(struct ib_mr *ib_mr)
455{
456 struct iwch_dev *rhp;
457 struct iwch_mr *mhp;
458 u32 mmid;
459
33718363 460 PDBG("%s ib_mr %p\n", __func__, ib_mr);
b038ced7
SW		 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);
273748cc 470 iwch_free_pbl(mhp);
b038ced7
SW		 471 remove_handle(rhp, &rhp->mmidr, mmid);
472 if (mhp->kva)
473 kfree((void *) (unsigned long) mhp->kva);
f7c6a7b5
RD		 474 if (mhp->umem)
475 ib_umem_release(mhp->umem);
33718363 476 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
b038ced7
SW		 477 kfree(mhp);
478 return 0;
479}
480
481static 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
33718363 496 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 497 php = to_iwch_pd(pd);
498 rhp = php->rhp;
499
b038ced7
SW		 500 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
501 if (!mhp)
502 return ERR_PTR(-ENOMEM);
503
273748cc
RD		 504 mhp->rhp = rhp;
505
b038ced7
SW		 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
273748cc
RD		 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
b038ced7
SW		 534 mhp->attr.pdid = php->pdid;
535 mhp->attr.zbva = 0;
536
e64518f3 537 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
b038ced7
SW		 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;
273748cc
RD		 543 ret = iwch_register_mem(rhp, php, mhp, shift);
544 if (ret)
545 goto err_pbl;
546
b038ced7 547 return &mhp->ibmr;
273748cc
RD		 548
549err_pbl:
550 iwch_free_pbl(mhp);
551
b038ced7
SW		 552err:
553 kfree(mhp);
554 return ERR_PTR(ret);
555
556}
557
558static 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;
b038ced7
SW		 569 __be64 *page_list = NULL;
570 int shift = 0;
571 u64 total_size;
bc4ba94c 572 int npages = 0;
b038ced7
SW		 573 int ret;
574
33718363 575 PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
b038ced7
SW		 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
b038ced7
SW		 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)
e64518f3 594 mh.attr.perms = iwch_ib_to_tpt_access(acc);
d6013471 595 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
b038ced7
SW		 596 ret = build_phys_page_list(buffer_list, num_phys_buf,
597 iova_start,
598 &total_size, &npages,
599 &shift, &page_list);
d6013471
SW		 600 if (ret)
601 return ret;
602 }
b038ced7 603
273748cc 604 ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
b038ced7
SW		 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)
e64518f3 612 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
b038ced7
SW		 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
f7c6a7b5
RD		 625static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
626 u64 virt, int acc, struct ib_udata *udata)
b038ced7
SW		 627{
628 __be64 *pages;
629 int shift, n, len;
eeb8461e 630 int i, k, entry;
b038ced7 631 int err = 0;
b038ced7
SW		 632 struct iwch_dev *rhp;
633 struct iwch_pd *php;
634 struct iwch_mr *mhp;
635 struct iwch_reg_user_mr_resp uresp;
eeb8461e 636 struct scatterlist *sg;
33718363 637 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 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
273748cc
RD		 645 mhp->rhp = rhp;
646
cb9fbc5c 647 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
f7c6a7b5
RD		 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
eeb8461e 656 n = mhp->umem->nmap;
b038ced7 657
273748cc
RD		 658 err = iwch_alloc_pbl(mhp, n);
659 if (err)
660 goto err;
661
662 pages = (__be64 *) __get_free_page(GFP_KERNEL);
b038ced7
SW		 663 if (!pages) {
664 err = -ENOMEM;
273748cc 665 goto err_pbl;
b038ced7
SW		 666 }
667
b038ced7
SW		 668 i = n = 0;
669
eeb8461e
YH		 670 for_each_sg(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) {
671 len = sg_dma_len(sg) >> shift;
b038ced7 672 for (k = 0; k < len; ++k) {
eeb8461e 673 pages[i++] = cpu_to_be64(sg_dma_address(sg) +
f7c6a7b5 674 mhp->umem->page_size * k);
273748cc
RD		 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 }
b038ced7 682 }
eeb8461e 683 }
b038ced7 684
273748cc
RD		 685 if (i)
686 err = iwch_write_pbl(mhp, pages, i, n);
687
688pbl_done:
689 free_page((unsigned long) pages);
690 if (err)
691 goto err_pbl;
692
b038ced7
SW		 693 mhp->attr.pdid = php->pdid;
694 mhp->attr.zbva = 0;
e64518f3 695 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
f7c6a7b5 696 mhp->attr.va_fbo = virt;
b038ced7 697 mhp->attr.page_size = shift - 12;
f7c6a7b5 698 mhp->attr.len = (u32) length;
273748cc
RD		 699
700 err = iwch_register_mem(rhp, php, mhp, shift);
b038ced7 701 if (err)
273748cc 702 goto err_pbl;
b038ced7 703
8176d297 704 if (udata && !t3a_device(rhp)) {
b038ced7 705 uresp.pbl_addr = (mhp->attr.pbl_addr -
273748cc 706 rhp->rdev.rnic_info.pbl_base) >> 3;
33718363 707 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
b038ced7
SW		 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
273748cc
RD		 719err_pbl:
720 iwch_free_pbl(mhp);
721
b038ced7 722err:
f7c6a7b5 723 ib_umem_release(mhp->umem);
b038ced7
SW		 724 kfree(mhp);
725 return ERR_PTR(err);
726}
727
728static 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
33718363 734 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 735
736 /*
737 * T3 only supports 32 bits of size.
738 */
49fa63d8
SW		 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 }
b038ced7
SW		 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
7083e42e 750static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
b038ced7
SW		 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
7083e42e
SM		 759 if (type != IB_MW_TYPE_1)
760 return ERR_PTR(-EINVAL);
761
b038ced7
SW		 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;
70fe1796 777 mhp->ibmw.rkey = stag;
13a23933
SW		 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 }
33718363 783 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
b038ced7
SW		 784 return &(mhp->ibmw);
785}
786
787static 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);
33718363 798 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
fe194f19 799 kfree(mhp);
b038ced7
SW		 800 return 0;
801}
802
f683d3bd
SG		 803static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd,
804 enum ib_mr_type mr_type,
805 u32 max_num_sg)
e7e55829
SW		 806{
807 struct iwch_dev *rhp;
808 struct iwch_pd *php;
809 struct iwch_mr *mhp;
810 u32 mmid;
811 u32 stag = 0;
13a23933 812 int ret = 0;
e7e55829 813
f683d3bd
SG		 814 if (mr_type != IB_MR_TYPE_MEM_REG ||
815 max_num_sg > T3_MAX_FASTREG_DEPTH)
816 return ERR_PTR(-EINVAL);
817
e7e55829
SW		 818 php = to_iwch_pd(pd);
819 rhp = php->rhp;
820 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
821 if (!mhp)
13a23933 822 goto err;
e7e55829
SW		 823
824 mhp->rhp = rhp;
f683d3bd 825 ret = iwch_alloc_pbl(mhp, max_num_sg);
13a23933
SW		 826 if (ret)
827 goto err1;
f683d3bd 828 mhp->attr.pbl_size = max_num_sg;
e7e55829
SW		 829 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
830 mhp->attr.pbl_size, mhp->attr.pbl_addr);
13a23933
SW		 831 if (ret)
832 goto err2;
e7e55829
SW		 833 mhp->attr.pdid = php->pdid;
834 mhp->attr.type = TPT_NON_SHARED_MR;
835 mhp->attr.stag = stag;
836 mhp->attr.state = 1;
837 mmid = (stag) >> 8;
838 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
13a23933
SW		 839 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
840 goto err3;
841
e7e55829
SW		 842 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
843 return &(mhp->ibmr);
13a23933
SW		 844err3:
845 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
846 mhp->attr.pbl_addr);
847err2:
848 iwch_free_pbl(mhp);
849err1:
850 kfree(mhp);
851err:
852 return ERR_PTR(ret);
e7e55829
SW		 853}
854
855static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
856 struct ib_device *device,
857 int page_list_len)
858{
859 struct ib_fast_reg_page_list *page_list;
860
861 page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
862 GFP_KERNEL);
863 if (!page_list)
864 return ERR_PTR(-ENOMEM);
865
866 page_list->page_list = (u64 *)(page_list + 1);
867 page_list->max_page_list_len = page_list_len;
868
869 return page_list;
870}
871
872static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
873{
874 kfree(page_list);
875}
876
b038ced7
SW		 877static int iwch_destroy_qp(struct ib_qp *ib_qp)
878{
879 struct iwch_dev *rhp;
880 struct iwch_qp *qhp;
881 struct iwch_qp_attributes attrs;
882 struct iwch_ucontext *ucontext;
883
884 qhp = to_iwch_qp(ib_qp);
885 rhp = qhp->rhp;
886
2df50da0
SW		 887 attrs.next_state = IWCH_QP_STATE_ERROR;
888 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
b038ced7
SW		 889 wait_event(qhp->wait, !qhp->ep);
890
891 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
892
893 atomic_dec(&qhp->refcnt);
894 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
895
896 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
897 : NULL;
898 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
899 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
900
33718363 901 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
b038ced7
SW		 902 ib_qp, qhp->wq.qpid, qhp);
903 kfree(qhp);
904 return 0;
905}
906
907static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
908 struct ib_qp_init_attr *attrs,
909 struct ib_udata *udata)
910{
911 struct iwch_dev *rhp;
912 struct iwch_qp *qhp;
913 struct iwch_pd *php;
914 struct iwch_cq *schp;
915 struct iwch_cq *rchp;
916 struct iwch_create_qp_resp uresp;
917 int wqsize, sqsize, rqsize;
918 struct iwch_ucontext *ucontext;
919
33718363 920 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 921 if (attrs->qp_type != IB_QPT_RC)
922 return ERR_PTR(-EINVAL);
923 php = to_iwch_pd(pd);
924 rhp = php->rhp;
925 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
926 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
927 if (!schp || !rchp)
928 return ERR_PTR(-EINVAL);
929
930 /* The RQT size must be # of entries + 1 rounded up to a power of two */
931 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
932 if (rqsize == attrs->cap.max_recv_wr)
933 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
934
935 /* T3 doesn't support RQT depth < 16 */
936 if (rqsize < 16)
937 rqsize = 16;
938
939 if (rqsize > T3_MAX_RQ_SIZE)
940 return ERR_PTR(-EINVAL);
941
1860cdf8
SW		 942 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
943 return ERR_PTR(-EINVAL);
944
b038ced7
SW		 945 /*
946 * NOTE: The SQ and total WQ sizes don't need to be
947 * a power of two. However, all the code assumes
948 * they are. EG: Q_FREECNT() and friends.
949 */
950 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
951 wqsize = roundup_pow_of_two(rqsize + sqsize);
e7e55829
SW		 952
953 /*
954 * Kernel users need more wq space for fastreg WRs which can take
955 * 2 WR fragments.
956 */
957 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
958 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
959 wqsize = roundup_pow_of_two(rqsize +
960 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
33718363 961 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
b038ced7
SW		 962 wqsize, sqsize, rqsize);
963 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
964 if (!qhp)
965 return ERR_PTR(-ENOMEM);
966 qhp->wq.size_log2 = ilog2(wqsize);
967 qhp->wq.rq_size_log2 = ilog2(rqsize);
968 qhp->wq.sq_size_log2 = ilog2(sqsize);
b038ced7
SW		 969 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
970 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
971 kfree(qhp);
972 return ERR_PTR(-ENOMEM);
973 }
1bab74e6 974
b038ced7
SW		 975 attrs->cap.max_recv_wr = rqsize - 1;
976 attrs->cap.max_send_wr = sqsize;
1bab74e6
JM		 977 attrs->cap.max_inline_data = T3_MAX_INLINE;
978
b038ced7
SW		 979 qhp->rhp = rhp;
980 qhp->attr.pd = php->pdid;
981 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
982 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
983 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
984 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
985 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
986 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
987 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
988 qhp->attr.state = IWCH_QP_STATE_IDLE;
989 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
990
991 /*
992 * XXX - These don't get passed in from the openib user
993 * at create time. The CM sets them via a QP modify.
994 * Need to fix... I think the CM should
995 */
996 qhp->attr.enable_rdma_read = 1;
997 qhp->attr.enable_rdma_write = 1;
998 qhp->attr.enable_bind = 1;
999 qhp->attr.max_ord = 1;
1000 qhp->attr.max_ird = 1;
1001
1002 spin_lock_init(&qhp->lock);
1003 init_waitqueue_head(&qhp->wait);
1004 atomic_set(&qhp->refcnt, 1);
13a23933
SW		 1005
1006 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
1007 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
1008 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
1009 kfree(qhp);
1010 return ERR_PTR(-ENOMEM);
1011 }
b038ced7
SW		 1012
1013 if (udata) {
1014
1015 struct iwch_mm_entry *mm1, *mm2;
1016
1017 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
1018 if (!mm1) {
1019 iwch_destroy_qp(&qhp->ibqp);
1020 return ERR_PTR(-ENOMEM);
1021 }
1022
1023 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
1024 if (!mm2) {
1025 kfree(mm1);
1026 iwch_destroy_qp(&qhp->ibqp);
1027 return ERR_PTR(-ENOMEM);
1028 }
1029
1030 uresp.qpid = qhp->wq.qpid;
1031 uresp.size_log2 = qhp->wq.size_log2;
1032 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
1033 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
1034 spin_lock(&ucontext->mmap_lock);
1035 uresp.key = ucontext->key;
1036 ucontext->key += PAGE_SIZE;
1037 uresp.db_key = ucontext->key;
1038 ucontext->key += PAGE_SIZE;
1039 spin_unlock(&ucontext->mmap_lock);
1040 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
1041 kfree(mm1);
1042 kfree(mm2);
1043 iwch_destroy_qp(&qhp->ibqp);
1044 return ERR_PTR(-EFAULT);
1045 }
1046 mm1->key = uresp.key;
1047 mm1->addr = virt_to_phys(qhp->wq.queue);
1048 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1049 insert_mmap(ucontext, mm1);
1050 mm2->key = uresp.db_key;
1051 mm2->addr = qhp->wq.udb & PAGE_MASK;
1052 mm2->len = PAGE_SIZE;
1053 insert_mmap(ucontext, mm2);
1054 }
1055 qhp->ibqp.qp_num = qhp->wq.qpid;
1056 init_timer(&(qhp->timer));
1057 PDBG("%s sq_num_entries %d, rq_num_entries %d "
4ab928f6 1058 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
33718363 1059 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
b038ced7 1060 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
4ab928f6 1061 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
b038ced7
SW		 1062 return &qhp->ibqp;
1063}
1064
1065static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1066 int attr_mask, struct ib_udata *udata)
1067{
1068 struct iwch_dev *rhp;
1069 struct iwch_qp *qhp;
1070 enum iwch_qp_attr_mask mask = 0;
1071 struct iwch_qp_attributes attrs;
1072
33718363 1073 PDBG("%s ib_qp %p\n", __func__, ibqp);
b038ced7
SW		 1074
1075 /* iwarp does not support the RTR state */
1076 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1077 attr_mask &= ~IB_QP_STATE;
1078
1079 /* Make sure we still have something left to do */
1080 if (!attr_mask)
1081 return 0;
1082
1083 memset(&attrs, 0, sizeof attrs);
1084 qhp = to_iwch_qp(ibqp);
1085 rhp = qhp->rhp;
1086
1087 attrs.next_state = iwch_convert_state(attr->qp_state);
1088 attrs.enable_rdma_read = (attr->qp_access_flags &
1089 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1090 attrs.enable_rdma_write = (attr->qp_access_flags &
1091 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1092 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1093
1094
1095 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1096 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1097 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1098 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1099 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1100
1101 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1102}
1103
1104void iwch_qp_add_ref(struct ib_qp *qp)
1105{
33718363 1106 PDBG("%s ib_qp %p\n", __func__, qp);
b038ced7
SW		 1107 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1108}
1109
1110void iwch_qp_rem_ref(struct ib_qp *qp)
1111{
33718363 1112 PDBG("%s ib_qp %p\n", __func__, qp);
b038ced7
SW		 1113 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1114 wake_up(&(to_iwch_qp(qp)->wait));
1115}
1116
2b540355 1117static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
b038ced7 1118{
33718363 1119 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
b038ced7
SW		 1120 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1121}
1122
1123
1124static int iwch_query_pkey(struct ib_device *ibdev,
1125 u8 port, u16 index, u16 * pkey)
1126{
33718363 1127 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7
SW		 1128 *pkey = 0;
1129 return 0;
1130}
1131
1132static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1133 int index, union ib_gid *gid)
1134{
1135 struct iwch_dev *dev;
1136
1137 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
33718363 1138 __func__, ibdev, port, index, gid);
b038ced7
SW		 1139 dev = to_iwch_dev(ibdev);
1140 BUG_ON(port == 0 || port > 2);
1141 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1142 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1143 return 0;
1144}
1145
97d1cc80
SW		 1146static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1147{
1148 struct ethtool_drvinfo info;
1149 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1150 char *cp, *next;
1151 unsigned fw_maj, fw_min, fw_mic;
1152
97d1cc80 1153 lldev->ethtool_ops->get_drvinfo(lldev, &info);
97d1cc80
SW		 1154
1155 next = info.fw_version + 1;
1156 cp = strsep(&next, ".");
1157 sscanf(cp, "%i", &fw_maj);
1158 cp = strsep(&next, ".");
1159 sscanf(cp, "%i", &fw_min);
1160 cp = strsep(&next, ".");
1161 sscanf(cp, "%i", &fw_mic);
1162
1163 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1164 (fw_mic & 0xffff);
1165}
1166
2528e33e
MB		 1167static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
1168 struct ib_udata *uhw)
b038ced7
SW		 1169{
1170
1171 struct iwch_dev *dev;
2528e33e 1172
33718363 1173 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7 1174
2528e33e
MB		 1175 if (uhw->inlen || uhw->outlen)
1176 return -EINVAL;
1177
b038ced7
SW		 1178 dev = to_iwch_dev(ibdev);
1179 memset(props, 0, sizeof *props);
1180 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
97d1cc80
SW		 1181 props->hw_ver = dev->rdev.t3cdev_p->type;
1182 props->fw_ver = fw_vers_string_to_u64(dev);
b038ced7 1183 props->device_cap_flags = dev->device_cap_flags;
52c8084b 1184 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
b038ced7
SW		 1185 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1186 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
ccaf10d0 1187 props->max_mr_size = dev->attr.max_mr_size;
b038ced7
SW		 1188 props->max_qp = dev->attr.max_qps;
1189 props->max_qp_wr = dev->attr.max_wrs;
1190 props->max_sge = dev->attr.max_sge_per_wr;
1191 props->max_sge_rd = 1;
1192 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
9a766649 1193 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
b038ced7
SW		 1194 props->max_cq = dev->attr.max_cqs;
1195 props->max_cqe = dev->attr.max_cqes_per_cq;
1196 props->max_mr = dev->attr.max_mem_regs;
1197 props->max_pd = dev->attr.max_pds;
1198 props->local_ca_ack_delay = 0;
e7e55829 1199 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
b038ced7
SW		 1200
1201 return 0;
1202}
1203
1204static int iwch_query_port(struct ib_device *ibdev,
1205 u8 port, struct ib_port_attr *props)
1206{
7ab1a2b3
SW		 1207 struct iwch_dev *dev;
1208 struct net_device *netdev;
1209 struct in_device *inetdev;
1210
33718363 1211 PDBG("%s ibdev %p\n", __func__, ibdev);
c752c782 1212
7ab1a2b3
SW		 1213 dev = to_iwch_dev(ibdev);
1214 netdev = dev->rdev.port_info.lldevs[port-1];
1215
c752c782 1216 memset(props, 0, sizeof(struct ib_port_attr));
b038ced7 1217 props->max_mtu = IB_MTU_4096;
7ab1a2b3
SW		 1218 if (netdev->mtu >= 4096)
1219 props->active_mtu = IB_MTU_4096;
1220 else if (netdev->mtu >= 2048)
1221 props->active_mtu = IB_MTU_2048;
1222 else if (netdev->mtu >= 1024)
1223 props->active_mtu = IB_MTU_1024;
1224 else if (netdev->mtu >= 512)
1225 props->active_mtu = IB_MTU_512;
1226 else
1227 props->active_mtu = IB_MTU_256;
1228
1229 if (!netif_carrier_ok(netdev))
1230 props->state = IB_PORT_DOWN;
1231 else {
1232 inetdev = in_dev_get(netdev);
e5da4ed8
SW		 1233 if (inetdev) {
1234 if (inetdev->ifa_list)
1235 props->state = IB_PORT_ACTIVE;
1236 else
1237 props->state = IB_PORT_INIT;
1238 in_dev_put(inetdev);
1239 } else
7ab1a2b3 1240 props->state = IB_PORT_INIT;
7ab1a2b3
SW		 1241 }
1242
b038ced7
SW		 1243 props->port_cap_flags =
1244 IB_PORT_CM_SUP |
1245 IB_PORT_SNMP_TUNNEL_SUP |
1246 IB_PORT_REINIT_SUP |
1247 IB_PORT_DEVICE_MGMT_SUP |
1248 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1249 props->gid_tbl_len = 1;
1250 props->pkey_tbl_len = 1;
b038ced7 1251 props->active_width = 2;
2e96691c 1252 props->active_speed = IB_SPEED_DDR;
b038ced7
SW		 1253 props->max_msg_sz = -1;
1254
1255 return 0;
1256}
1257
f4e91eb4
TJ		 1258static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1259 char *buf)
b038ced7 1260{
f4e91eb4
TJ		 1261 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1262 ibdev.dev);
1263 PDBG("%s dev 0x%p\n", __func__, dev);
1264 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
b038ced7
SW		 1265}
1266
f4e91eb4 1267static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
b038ced7 1268{
f4e91eb4
TJ		 1269 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1270 ibdev.dev);
b038ced7 1271 struct ethtool_drvinfo info;
f4e91eb4 1272 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
b038ced7 1273
f4e91eb4 1274 PDBG("%s dev 0x%p\n", __func__, dev);
b038ced7
SW		 1275 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1276 return sprintf(buf, "%s\n", info.fw_version);
1277}
1278
f4e91eb4
TJ		 1279static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1280 char *buf)
b038ced7 1281{
f4e91eb4
TJ		 1282 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1283 ibdev.dev);
b038ced7 1284 struct ethtool_drvinfo info;
f4e91eb4 1285 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
b038ced7 1286
f4e91eb4 1287 PDBG("%s dev 0x%p\n", __func__, dev);
b038ced7
SW		 1288 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1289 return sprintf(buf, "%s\n", info.driver);
1290}
1291
f4e91eb4
TJ		 1292static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1293 char *buf)
b038ced7 1294{
f4e91eb4
TJ		 1295 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1296 ibdev.dev);
1297 PDBG("%s dev 0x%p\n", __func__, dev);
1298 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1299 iwch_dev->rdev.rnic_info.pdev->device);
b038ced7
SW		 1300}
1301
14cc180f
SW		 1302static int iwch_get_mib(struct ib_device *ibdev,
1303 union rdma_protocol_stats *stats)
1304{
1305 struct iwch_dev *dev;
1306 struct tp_mib_stats m;
1307 int ret;
1308
1309 PDBG("%s ibdev %p\n", __func__, ibdev);
1310 dev = to_iwch_dev(ibdev);
1311 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1312 if (ret)
1313 return -ENOSYS;
1314
1315 memset(stats, 0, sizeof *stats);
1316 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1317 m.ipInReceive_lo;
1318 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1319 m.ipInHdrErrors_lo;
1320 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1321 m.ipInAddrErrors_lo;
1322 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1323 m.ipInUnknownProtos_lo;
1324 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1325 m.ipInDiscards_lo;
1326 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1327 m.ipInDelivers_lo;
1328 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1329 m.ipOutRequests_lo;
1330 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1331 m.ipOutDiscards_lo;
1332 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1333 m.ipOutNoRoutes_lo;
1334 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1335 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1336 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1337 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1338 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1339 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1340 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1341 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1342 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1343 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1344 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1345 m.tcpInSegs_lo;
1346 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1347 m.tcpOutSegs_lo;
1348 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1349 m.tcpRetransSeg_lo;
1350 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1351 m.tcpInErrs_lo;
1352 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1353 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1354 return 0;
1355}
1356
f4e91eb4
TJ		 1357static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1358static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1359static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1360static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
b038ced7 1361
f4e91eb4
TJ		 1362static struct device_attribute *iwch_class_attributes[] = {
1363 &dev_attr_hw_rev,
1364 &dev_attr_fw_ver,
1365 &dev_attr_hca_type,
14cc180f 1366 &dev_attr_board_id,
b038ced7
SW		 1367};
1368
7738613e
IW		 1369static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
1370 struct ib_port_immutable *immutable)
1371{
1372 struct ib_port_attr attr;
1373 int err;
1374
1375 err = iwch_query_port(ibdev, port_num, &attr);
1376 if (err)
1377 return err;
1378
1379 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1380 immutable->gid_tbl_len = attr.gid_tbl_len;
f9b22e35 1381 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
7738613e
IW		 1382
1383 return 0;
1384}
1385
b038ced7
SW		 1386int iwch_register_device(struct iwch_dev *dev)
1387{
1388 int ret;
1389 int i;
1390
33718363 1391 PDBG("%s iwch_dev %p\n", __func__, dev);
b038ced7
SW		 1392 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1393 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1394 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1395 dev->ibdev.owner = THIS_MODULE;
be43324d
SW		 1396 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1397 IB_DEVICE_MEM_WINDOW |
1398 IB_DEVICE_MEM_MGT_EXTENSIONS;
96f15c03
SW		 1399
1400 /* cxgb3 supports STag 0. */
1401 dev->ibdev.local_dma_lkey = 0;
b038ced7
SW		 1402
1403 dev->ibdev.uverbs_cmd_mask =
1404 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1405 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1406 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1407 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1408 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1409 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1410 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1411 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1412 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1413 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1414 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1415 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1416 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1417 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1418 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1419 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1420 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1421 dev->ibdev.node_type = RDMA_NODE_RNIC;
1422 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1423 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
f4fd0b22 1424 dev->ibdev.num_comp_vectors = 1;
b038ced7 1425 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
b038ced7
SW		 1426 dev->ibdev.query_device = iwch_query_device;
1427 dev->ibdev.query_port = iwch_query_port;
b038ced7
SW		 1428 dev->ibdev.query_pkey = iwch_query_pkey;
1429 dev->ibdev.query_gid = iwch_query_gid;
1430 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1431 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1432 dev->ibdev.mmap = iwch_mmap;
1433 dev->ibdev.alloc_pd = iwch_allocate_pd;
1434 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1435 dev->ibdev.create_ah = iwch_ah_create;
1436 dev->ibdev.destroy_ah = iwch_ah_destroy;
1437 dev->ibdev.create_qp = iwch_create_qp;
1438 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1439 dev->ibdev.destroy_qp = iwch_destroy_qp;
1440 dev->ibdev.create_cq = iwch_create_cq;
1441 dev->ibdev.destroy_cq = iwch_destroy_cq;
1442 dev->ibdev.resize_cq = iwch_resize_cq;
1443 dev->ibdev.poll_cq = iwch_poll_cq;
1444 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1445 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1446 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1447 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1448 dev->ibdev.dereg_mr = iwch_dereg_mr;
1449 dev->ibdev.alloc_mw = iwch_alloc_mw;
1450 dev->ibdev.bind_mw = iwch_bind_mw;
1451 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
f683d3bd 1452 dev->ibdev.alloc_mr = iwch_alloc_mr;
e7e55829
SW		 1453 dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1454 dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
b038ced7
SW		 1455 dev->ibdev.attach_mcast = iwch_multicast_attach;
1456 dev->ibdev.detach_mcast = iwch_multicast_detach;
1457 dev->ibdev.process_mad = iwch_process_mad;
b038ced7
SW		 1458 dev->ibdev.req_notify_cq = iwch_arm_cq;
1459 dev->ibdev.post_send = iwch_post_send;
1460 dev->ibdev.post_recv = iwch_post_receive;
14cc180f 1461 dev->ibdev.get_protocol_stats = iwch_get_mib;
b955150e 1462 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
7738613e 1463 dev->ibdev.get_port_immutable = iwch_port_immutable;
b038ced7 1464
6abb6ea8
WC		 1465 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1466 if (!dev->ibdev.iwcm)
1467 return -ENOMEM;
1468
b038ced7
SW		 1469 dev->ibdev.iwcm->connect = iwch_connect;
1470 dev->ibdev.iwcm->accept = iwch_accept_cr;
1471 dev->ibdev.iwcm->reject = iwch_reject_cr;
1472 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1473 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1474 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1475 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1476 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1477
9a6edb60 1478 ret = ib_register_device(&dev->ibdev, NULL);
b038ced7
SW		 1479 if (ret)
1480 goto bail1;
1481
1482 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
f4e91eb4
TJ		 1483 ret = device_create_file(&dev->ibdev.dev,
1484 iwch_class_attributes[i]);
b038ced7
SW		 1485 if (ret) {
1486 goto bail2;
1487 }
1488 }
1489 return 0;
1490bail2:
1491 ib_unregister_device(&dev->ibdev);
1492bail1:
3793d2fc 1493 kfree(dev->ibdev.iwcm);
b038ced7
SW		 1494 return ret;
1495}
1496
1497void iwch_unregister_device(struct iwch_dev *dev)
1498{
1499 int i;
1500
33718363 1501 PDBG("%s iwch_dev %p\n", __func__, dev);
b038ced7 1502 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
f4e91eb4
TJ		 1503 device_remove_file(&dev->ibdev.dev,
1504 iwch_class_attributes[i]);
b038ced7 1505 ib_unregister_device(&dev->ibdev);
3793d2fc 1506 kfree(dev->ibdev.iwcm);
b038ced7
SW		 1507 return;
1508}
Linux kernel - Deliverables
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