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IB: remove the write-only usecnt field from struct ib_mr
[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
462 mhp = to_iwch_mr(ib_mr);
14fb4171 463 kfree(mhp->pages);
b038ced7
SW		 464 rhp = mhp->rhp;
465 mmid = mhp->attr.stag >> 8;
466 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
467 mhp->attr.pbl_addr);
273748cc 468 iwch_free_pbl(mhp);
b038ced7
SW		 469 remove_handle(rhp, &rhp->mmidr, mmid);
470 if (mhp->kva)
471 kfree((void *) (unsigned long) mhp->kva);
f7c6a7b5
RD		 472 if (mhp->umem)
473 ib_umem_release(mhp->umem);
33718363 474 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
b038ced7
SW		 475 kfree(mhp);
476 return 0;
477}
478
35cb3fc0 479static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
b038ced7 480{
35cb3fc0
CH		 481 const u64 total_size = 0xffffffff;
482 const u64 mask = (total_size + PAGE_SIZE - 1) & PAGE_MASK;
483 struct iwch_pd *php = to_iwch_pd(pd);
484 struct iwch_dev *rhp = php->rhp;
b038ced7 485 struct iwch_mr *mhp;
35cb3fc0
CH		 486 __be64 *page_list;
487 int shift = 26, npages, ret, i;
b038ced7 488
33718363 489 PDBG("%s ib_pd %p\n", __func__, pd);
35cb3fc0
CH		 490
491 /*
492 * T3 only supports 32 bits of size.
493 */
494 if (sizeof(phys_addr_t) > 4) {
495 pr_warn_once(MOD "Cannot support dma_mrs on this platform.\n");
496 return ERR_PTR(-ENOTSUPP);
497 }
b038ced7 498
b038ced7
SW		 499 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
500 if (!mhp)
501 return ERR_PTR(-ENOMEM);
502
273748cc
RD		 503 mhp->rhp = rhp;
504
35cb3fc0
CH		 505 npages = (total_size + (1ULL << shift) - 1) >> shift;
506 if (!npages) {
b038ced7
SW		 507 ret = -EINVAL;
508 goto err;
509 }
510
35cb3fc0
CH		 511 page_list = kmalloc_array(npages, sizeof(u64), GFP_KERNEL);
512 if (!page_list) {
513 ret = -ENOMEM;
b038ced7
SW		 514 goto err;
515 }
516
35cb3fc0
CH		 517 for (i = 0; i < npages; i++)
518 page_list[i] = cpu_to_be64((u64)i << shift);
519
520 PDBG("%s mask 0x%llx shift %d len %lld pbl_size %d\n",
521 __func__, mask, shift, total_size, npages);
b038ced7 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);
35cb3fc0 538 mhp->attr.va_fbo = 0;
b038ced7
SW		 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);
b038ced7
SW		 555}
556
f7c6a7b5
RD		 557static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
558 u64 virt, int acc, struct ib_udata *udata)
b038ced7
SW		 559{
560 __be64 *pages;
561 int shift, n, len;
eeb8461e 562 int i, k, entry;
b038ced7 563 int err = 0;
b038ced7
SW		 564 struct iwch_dev *rhp;
565 struct iwch_pd *php;
566 struct iwch_mr *mhp;
567 struct iwch_reg_user_mr_resp uresp;
eeb8461e 568 struct scatterlist *sg;
33718363 569 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 570
571 php = to_iwch_pd(pd);
572 rhp = php->rhp;
573 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
574 if (!mhp)
575 return ERR_PTR(-ENOMEM);
576
273748cc
RD		 577 mhp->rhp = rhp;
578
cb9fbc5c 579 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
f7c6a7b5
RD		 580 if (IS_ERR(mhp->umem)) {
581 err = PTR_ERR(mhp->umem);
582 kfree(mhp);
583 return ERR_PTR(err);
584 }
585
586 shift = ffs(mhp->umem->page_size) - 1;
587
eeb8461e 588 n = mhp->umem->nmap;
b038ced7 589
273748cc
RD		 590 err = iwch_alloc_pbl(mhp, n);
591 if (err)
592 goto err;
593
594 pages = (__be64 *) __get_free_page(GFP_KERNEL);
b038ced7
SW		 595 if (!pages) {
596 err = -ENOMEM;
273748cc 597 goto err_pbl;
b038ced7
SW		 598 }
599
b038ced7
SW		 600 i = n = 0;
601
eeb8461e
YH		 602 for_each_sg(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) {
603 len = sg_dma_len(sg) >> shift;
b038ced7 604 for (k = 0; k < len; ++k) {
eeb8461e 605 pages[i++] = cpu_to_be64(sg_dma_address(sg) +
f7c6a7b5 606 mhp->umem->page_size * k);
273748cc
RD		 607 if (i == PAGE_SIZE / sizeof *pages) {
608 err = iwch_write_pbl(mhp, pages, i, n);
609 if (err)
610 goto pbl_done;
611 n += i;
612 i = 0;
613 }
b038ced7 614 }
eeb8461e 615 }
b038ced7 616
273748cc
RD		 617 if (i)
618 err = iwch_write_pbl(mhp, pages, i, n);
619
620pbl_done:
621 free_page((unsigned long) pages);
622 if (err)
623 goto err_pbl;
624
b038ced7
SW		 625 mhp->attr.pdid = php->pdid;
626 mhp->attr.zbva = 0;
e64518f3 627 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
f7c6a7b5 628 mhp->attr.va_fbo = virt;
b038ced7 629 mhp->attr.page_size = shift - 12;
f7c6a7b5 630 mhp->attr.len = (u32) length;
273748cc
RD		 631
632 err = iwch_register_mem(rhp, php, mhp, shift);
b038ced7 633 if (err)
273748cc 634 goto err_pbl;
b038ced7 635
8176d297 636 if (udata && !t3a_device(rhp)) {
b038ced7 637 uresp.pbl_addr = (mhp->attr.pbl_addr -
273748cc 638 rhp->rdev.rnic_info.pbl_base) >> 3;
33718363 639 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
b038ced7
SW		 640 uresp.pbl_addr);
641
642 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
643 iwch_dereg_mr(&mhp->ibmr);
644 err = -EFAULT;
645 goto err;
646 }
647 }
648
649 return &mhp->ibmr;
650
273748cc
RD		 651err_pbl:
652 iwch_free_pbl(mhp);
653
b038ced7 654err:
f7c6a7b5 655 ib_umem_release(mhp->umem);
b038ced7
SW		 656 kfree(mhp);
657 return ERR_PTR(err);
658}
659
7083e42e 660static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
b038ced7
SW		 661{
662 struct iwch_dev *rhp;
663 struct iwch_pd *php;
664 struct iwch_mw *mhp;
665 u32 mmid;
666 u32 stag = 0;
667 int ret;
668
7083e42e
SM		 669 if (type != IB_MW_TYPE_1)
670 return ERR_PTR(-EINVAL);
671
b038ced7
SW		 672 php = to_iwch_pd(pd);
673 rhp = php->rhp;
674 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
675 if (!mhp)
676 return ERR_PTR(-ENOMEM);
677 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
678 if (ret) {
679 kfree(mhp);
680 return ERR_PTR(ret);
681 }
682 mhp->rhp = rhp;
683 mhp->attr.pdid = php->pdid;
684 mhp->attr.type = TPT_MW;
685 mhp->attr.stag = stag;
686 mmid = (stag) >> 8;
70fe1796 687 mhp->ibmw.rkey = stag;
13a23933
SW		 688 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
689 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
690 kfree(mhp);
691 return ERR_PTR(-ENOMEM);
692 }
33718363 693 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
b038ced7
SW		 694 return &(mhp->ibmw);
695}
696
697static int iwch_dealloc_mw(struct ib_mw *mw)
698{
699 struct iwch_dev *rhp;
700 struct iwch_mw *mhp;
701 u32 mmid;
702
703 mhp = to_iwch_mw(mw);
704 rhp = mhp->rhp;
705 mmid = (mw->rkey) >> 8;
706 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
707 remove_handle(rhp, &rhp->mmidr, mmid);
33718363 708 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
fe194f19 709 kfree(mhp);
b038ced7
SW		 710 return 0;
711}
712
f683d3bd
SG		 713static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd,
714 enum ib_mr_type mr_type,
715 u32 max_num_sg)
e7e55829
SW		 716{
717 struct iwch_dev *rhp;
718 struct iwch_pd *php;
719 struct iwch_mr *mhp;
720 u32 mmid;
721 u32 stag = 0;
13a23933 722 int ret = 0;
e7e55829 723
f683d3bd
SG		 724 if (mr_type != IB_MR_TYPE_MEM_REG ||
725 max_num_sg > T3_MAX_FASTREG_DEPTH)
726 return ERR_PTR(-EINVAL);
727
e7e55829
SW		 728 php = to_iwch_pd(pd);
729 rhp = php->rhp;
730 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
731 if (!mhp)
13a23933 732 goto err;
e7e55829 733
14fb4171
SG		 734 mhp->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
735 if (!mhp->pages) {
736 ret = -ENOMEM;
737 goto pl_err;
738 }
739
e7e55829 740 mhp->rhp = rhp;
f683d3bd 741 ret = iwch_alloc_pbl(mhp, max_num_sg);
13a23933
SW		 742 if (ret)
743 goto err1;
f683d3bd 744 mhp->attr.pbl_size = max_num_sg;
e7e55829
SW		 745 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
746 mhp->attr.pbl_size, mhp->attr.pbl_addr);
13a23933
SW		 747 if (ret)
748 goto err2;
e7e55829
SW		 749 mhp->attr.pdid = php->pdid;
750 mhp->attr.type = TPT_NON_SHARED_MR;
751 mhp->attr.stag = stag;
752 mhp->attr.state = 1;
753 mmid = (stag) >> 8;
754 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
13a23933
SW		 755 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
756 goto err3;
757
e7e55829
SW		 758 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
759 return &(mhp->ibmr);
13a23933
SW		 760err3:
761 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
762 mhp->attr.pbl_addr);
763err2:
764 iwch_free_pbl(mhp);
765err1:
14fb4171
SG		 766 kfree(mhp->pages);
767pl_err:
13a23933
SW		 768 kfree(mhp);
769err:
770 return ERR_PTR(ret);
e7e55829
SW		 771}
772
14fb4171
SG		 773static int iwch_set_page(struct ib_mr *ibmr, u64 addr)
774{
775 struct iwch_mr *mhp = to_iwch_mr(ibmr);
776
777 if (unlikely(mhp->npages == mhp->attr.pbl_size))
778 return -ENOMEM;
779
780 mhp->pages[mhp->npages++] = addr;
781
782 return 0;
783}
784
785static int iwch_map_mr_sg(struct ib_mr *ibmr,
786 struct scatterlist *sg,
787 int sg_nents)
788{
789 struct iwch_mr *mhp = to_iwch_mr(ibmr);
790
791 mhp->npages = 0;
792
793 return ib_sg_to_pages(ibmr, sg, sg_nents, iwch_set_page);
794}
795
b038ced7
SW		 796static int iwch_destroy_qp(struct ib_qp *ib_qp)
797{
798 struct iwch_dev *rhp;
799 struct iwch_qp *qhp;
800 struct iwch_qp_attributes attrs;
801 struct iwch_ucontext *ucontext;
802
803 qhp = to_iwch_qp(ib_qp);
804 rhp = qhp->rhp;
805
2df50da0
SW		 806 attrs.next_state = IWCH_QP_STATE_ERROR;
807 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
b038ced7
SW		 808 wait_event(qhp->wait, !qhp->ep);
809
810 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
811
812 atomic_dec(&qhp->refcnt);
813 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
814
815 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
816 : NULL;
817 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
818 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
819
33718363 820 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
b038ced7
SW		 821 ib_qp, qhp->wq.qpid, qhp);
822 kfree(qhp);
823 return 0;
824}
825
826static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
827 struct ib_qp_init_attr *attrs,
828 struct ib_udata *udata)
829{
830 struct iwch_dev *rhp;
831 struct iwch_qp *qhp;
832 struct iwch_pd *php;
833 struct iwch_cq *schp;
834 struct iwch_cq *rchp;
835 struct iwch_create_qp_resp uresp;
836 int wqsize, sqsize, rqsize;
837 struct iwch_ucontext *ucontext;
838
33718363 839 PDBG("%s ib_pd %p\n", __func__, pd);
b038ced7
SW		 840 if (attrs->qp_type != IB_QPT_RC)
841 return ERR_PTR(-EINVAL);
842 php = to_iwch_pd(pd);
843 rhp = php->rhp;
844 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
845 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
846 if (!schp || !rchp)
847 return ERR_PTR(-EINVAL);
848
849 /* The RQT size must be # of entries + 1 rounded up to a power of two */
850 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
851 if (rqsize == attrs->cap.max_recv_wr)
852 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
853
854 /* T3 doesn't support RQT depth < 16 */
855 if (rqsize < 16)
856 rqsize = 16;
857
858 if (rqsize > T3_MAX_RQ_SIZE)
859 return ERR_PTR(-EINVAL);
860
1860cdf8
SW		 861 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
862 return ERR_PTR(-EINVAL);
863
b038ced7
SW		 864 /*
865 * NOTE: The SQ and total WQ sizes don't need to be
866 * a power of two. However, all the code assumes
867 * they are. EG: Q_FREECNT() and friends.
868 */
869 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
870 wqsize = roundup_pow_of_two(rqsize + sqsize);
e7e55829
SW		 871
872 /*
873 * Kernel users need more wq space for fastreg WRs which can take
874 * 2 WR fragments.
875 */
876 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
877 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
878 wqsize = roundup_pow_of_two(rqsize +
879 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
33718363 880 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
b038ced7
SW		 881 wqsize, sqsize, rqsize);
882 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
883 if (!qhp)
884 return ERR_PTR(-ENOMEM);
885 qhp->wq.size_log2 = ilog2(wqsize);
886 qhp->wq.rq_size_log2 = ilog2(rqsize);
887 qhp->wq.sq_size_log2 = ilog2(sqsize);
b038ced7
SW		 888 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
889 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
890 kfree(qhp);
891 return ERR_PTR(-ENOMEM);
892 }
1bab74e6 893
b038ced7
SW		 894 attrs->cap.max_recv_wr = rqsize - 1;
895 attrs->cap.max_send_wr = sqsize;
1bab74e6
JM		 896 attrs->cap.max_inline_data = T3_MAX_INLINE;
897
b038ced7
SW		 898 qhp->rhp = rhp;
899 qhp->attr.pd = php->pdid;
900 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
901 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
902 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
903 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
904 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
905 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
906 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
907 qhp->attr.state = IWCH_QP_STATE_IDLE;
908 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
909
910 /*
911 * XXX - These don't get passed in from the openib user
912 * at create time. The CM sets them via a QP modify.
913 * Need to fix... I think the CM should
914 */
915 qhp->attr.enable_rdma_read = 1;
916 qhp->attr.enable_rdma_write = 1;
917 qhp->attr.enable_bind = 1;
918 qhp->attr.max_ord = 1;
919 qhp->attr.max_ird = 1;
920
921 spin_lock_init(&qhp->lock);
922 init_waitqueue_head(&qhp->wait);
923 atomic_set(&qhp->refcnt, 1);
13a23933
SW		 924
925 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
926 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
927 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
928 kfree(qhp);
929 return ERR_PTR(-ENOMEM);
930 }
b038ced7
SW		 931
932 if (udata) {
933
934 struct iwch_mm_entry *mm1, *mm2;
935
936 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
937 if (!mm1) {
938 iwch_destroy_qp(&qhp->ibqp);
939 return ERR_PTR(-ENOMEM);
940 }
941
942 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
943 if (!mm2) {
944 kfree(mm1);
945 iwch_destroy_qp(&qhp->ibqp);
946 return ERR_PTR(-ENOMEM);
947 }
948
949 uresp.qpid = qhp->wq.qpid;
950 uresp.size_log2 = qhp->wq.size_log2;
951 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
952 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
953 spin_lock(&ucontext->mmap_lock);
954 uresp.key = ucontext->key;
955 ucontext->key += PAGE_SIZE;
956 uresp.db_key = ucontext->key;
957 ucontext->key += PAGE_SIZE;
958 spin_unlock(&ucontext->mmap_lock);
959 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
960 kfree(mm1);
961 kfree(mm2);
962 iwch_destroy_qp(&qhp->ibqp);
963 return ERR_PTR(-EFAULT);
964 }
965 mm1->key = uresp.key;
966 mm1->addr = virt_to_phys(qhp->wq.queue);
967 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
968 insert_mmap(ucontext, mm1);
969 mm2->key = uresp.db_key;
970 mm2->addr = qhp->wq.udb & PAGE_MASK;
971 mm2->len = PAGE_SIZE;
972 insert_mmap(ucontext, mm2);
973 }
974 qhp->ibqp.qp_num = qhp->wq.qpid;
975 init_timer(&(qhp->timer));
976 PDBG("%s sq_num_entries %d, rq_num_entries %d "
4ab928f6 977 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
33718363 978 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
b038ced7 979 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
4ab928f6 980 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
b038ced7
SW		 981 return &qhp->ibqp;
982}
983
984static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
985 int attr_mask, struct ib_udata *udata)
986{
987 struct iwch_dev *rhp;
988 struct iwch_qp *qhp;
989 enum iwch_qp_attr_mask mask = 0;
990 struct iwch_qp_attributes attrs;
991
33718363 992 PDBG("%s ib_qp %p\n", __func__, ibqp);
b038ced7
SW		 993
994 /* iwarp does not support the RTR state */
995 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
996 attr_mask &= ~IB_QP_STATE;
997
998 /* Make sure we still have something left to do */
999 if (!attr_mask)
1000 return 0;
1001
1002 memset(&attrs, 0, sizeof attrs);
1003 qhp = to_iwch_qp(ibqp);
1004 rhp = qhp->rhp;
1005
1006 attrs.next_state = iwch_convert_state(attr->qp_state);
1007 attrs.enable_rdma_read = (attr->qp_access_flags &
1008 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1009 attrs.enable_rdma_write = (attr->qp_access_flags &
1010 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1011 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1012
1013
1014 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1015 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1016 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1017 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1018 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1019
1020 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1021}
1022
1023void iwch_qp_add_ref(struct ib_qp *qp)
1024{
33718363 1025 PDBG("%s ib_qp %p\n", __func__, qp);
b038ced7
SW		 1026 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1027}
1028
1029void iwch_qp_rem_ref(struct ib_qp *qp)
1030{
33718363 1031 PDBG("%s ib_qp %p\n", __func__, qp);
b038ced7
SW		 1032 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1033 wake_up(&(to_iwch_qp(qp)->wait));
1034}
1035
2b540355 1036static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
b038ced7 1037{
33718363 1038 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
b038ced7
SW		 1039 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1040}
1041
1042
1043static int iwch_query_pkey(struct ib_device *ibdev,
1044 u8 port, u16 index, u16 * pkey)
1045{
33718363 1046 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7
SW		 1047 *pkey = 0;
1048 return 0;
1049}
1050
1051static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1052 int index, union ib_gid *gid)
1053{
1054 struct iwch_dev *dev;
1055
1056 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
33718363 1057 __func__, ibdev, port, index, gid);
b038ced7
SW		 1058 dev = to_iwch_dev(ibdev);
1059 BUG_ON(port == 0 || port > 2);
1060 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1061 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1062 return 0;
1063}
1064
97d1cc80
SW		 1065static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1066{
1067 struct ethtool_drvinfo info;
1068 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1069 char *cp, *next;
1070 unsigned fw_maj, fw_min, fw_mic;
1071
97d1cc80 1072 lldev->ethtool_ops->get_drvinfo(lldev, &info);
97d1cc80
SW		 1073
1074 next = info.fw_version + 1;
1075 cp = strsep(&next, ".");
1076 sscanf(cp, "%i", &fw_maj);
1077 cp = strsep(&next, ".");
1078 sscanf(cp, "%i", &fw_min);
1079 cp = strsep(&next, ".");
1080 sscanf(cp, "%i", &fw_mic);
1081
1082 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1083 (fw_mic & 0xffff);
1084}
1085
2528e33e
MB		 1086static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
1087 struct ib_udata *uhw)
b038ced7
SW		 1088{
1089
1090 struct iwch_dev *dev;
2528e33e 1091
33718363 1092 PDBG("%s ibdev %p\n", __func__, ibdev);
b038ced7 1093
2528e33e
MB		 1094 if (uhw->inlen || uhw->outlen)
1095 return -EINVAL;
1096
b038ced7
SW		 1097 dev = to_iwch_dev(ibdev);
1098 memset(props, 0, sizeof *props);
1099 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
97d1cc80
SW		 1100 props->hw_ver = dev->rdev.t3cdev_p->type;
1101 props->fw_ver = fw_vers_string_to_u64(dev);
b038ced7 1102 props->device_cap_flags = dev->device_cap_flags;
52c8084b 1103 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
b038ced7
SW		 1104 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1105 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
ccaf10d0 1106 props->max_mr_size = dev->attr.max_mr_size;
b038ced7
SW		 1107 props->max_qp = dev->attr.max_qps;
1108 props->max_qp_wr = dev->attr.max_wrs;
1109 props->max_sge = dev->attr.max_sge_per_wr;
1110 props->max_sge_rd = 1;
1111 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
9a766649 1112 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
b038ced7
SW		 1113 props->max_cq = dev->attr.max_cqs;
1114 props->max_cqe = dev->attr.max_cqes_per_cq;
1115 props->max_mr = dev->attr.max_mem_regs;
1116 props->max_pd = dev->attr.max_pds;
1117 props->local_ca_ack_delay = 0;
e7e55829 1118 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
b038ced7
SW		 1119
1120 return 0;
1121}
1122
1123static int iwch_query_port(struct ib_device *ibdev,
1124 u8 port, struct ib_port_attr *props)
1125{
7ab1a2b3
SW		 1126 struct iwch_dev *dev;
1127 struct net_device *netdev;
1128 struct in_device *inetdev;
1129
33718363 1130 PDBG("%s ibdev %p\n", __func__, ibdev);
c752c782 1131
7ab1a2b3
SW		 1132 dev = to_iwch_dev(ibdev);
1133 netdev = dev->rdev.port_info.lldevs[port-1];
1134
c752c782 1135 memset(props, 0, sizeof(struct ib_port_attr));
b038ced7 1136 props->max_mtu = IB_MTU_4096;
7ab1a2b3
SW		 1137 if (netdev->mtu >= 4096)
1138 props->active_mtu = IB_MTU_4096;
1139 else if (netdev->mtu >= 2048)
1140 props->active_mtu = IB_MTU_2048;
1141 else if (netdev->mtu >= 1024)
1142 props->active_mtu = IB_MTU_1024;
1143 else if (netdev->mtu >= 512)
1144 props->active_mtu = IB_MTU_512;
1145 else
1146 props->active_mtu = IB_MTU_256;
1147
1148 if (!netif_carrier_ok(netdev))
1149 props->state = IB_PORT_DOWN;
1150 else {
1151 inetdev = in_dev_get(netdev);
e5da4ed8
SW		 1152 if (inetdev) {
1153 if (inetdev->ifa_list)
1154 props->state = IB_PORT_ACTIVE;
1155 else
1156 props->state = IB_PORT_INIT;
1157 in_dev_put(inetdev);
1158 } else
7ab1a2b3 1159 props->state = IB_PORT_INIT;
7ab1a2b3
SW		 1160 }
1161
b038ced7
SW		 1162 props->port_cap_flags =
1163 IB_PORT_CM_SUP |
1164 IB_PORT_SNMP_TUNNEL_SUP |
1165 IB_PORT_REINIT_SUP |
1166 IB_PORT_DEVICE_MGMT_SUP |
1167 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1168 props->gid_tbl_len = 1;
1169 props->pkey_tbl_len = 1;
b038ced7 1170 props->active_width = 2;
2e96691c 1171 props->active_speed = IB_SPEED_DDR;
b038ced7
SW		 1172 props->max_msg_sz = -1;
1173
1174 return 0;
1175}
1176
f4e91eb4
TJ		 1177static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1178 char *buf)
b038ced7 1179{
f4e91eb4
TJ		 1180 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1181 ibdev.dev);
1182 PDBG("%s dev 0x%p\n", __func__, dev);
1183 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
b038ced7
SW		 1184}
1185
f4e91eb4 1186static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
b038ced7 1187{
f4e91eb4
TJ		 1188 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1189 ibdev.dev);
b038ced7 1190 struct ethtool_drvinfo info;
f4e91eb4 1191 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
b038ced7 1192
f4e91eb4 1193 PDBG("%s dev 0x%p\n", __func__, dev);
b038ced7
SW		 1194 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1195 return sprintf(buf, "%s\n", info.fw_version);
1196}
1197
f4e91eb4
TJ		 1198static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1199 char *buf)
b038ced7 1200{
f4e91eb4
TJ		 1201 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1202 ibdev.dev);
b038ced7 1203 struct ethtool_drvinfo info;
f4e91eb4 1204 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
b038ced7 1205
f4e91eb4 1206 PDBG("%s dev 0x%p\n", __func__, dev);
b038ced7
SW		 1207 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1208 return sprintf(buf, "%s\n", info.driver);
1209}
1210
f4e91eb4
TJ		 1211static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1212 char *buf)
b038ced7 1213{
f4e91eb4
TJ		 1214 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1215 ibdev.dev);
1216 PDBG("%s dev 0x%p\n", __func__, dev);
1217 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1218 iwch_dev->rdev.rnic_info.pdev->device);
b038ced7
SW		 1219}
1220
14cc180f
SW		 1221static int iwch_get_mib(struct ib_device *ibdev,
1222 union rdma_protocol_stats *stats)
1223{
1224 struct iwch_dev *dev;
1225 struct tp_mib_stats m;
1226 int ret;
1227
1228 PDBG("%s ibdev %p\n", __func__, ibdev);
1229 dev = to_iwch_dev(ibdev);
1230 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1231 if (ret)
1232 return -ENOSYS;
1233
1234 memset(stats, 0, sizeof *stats);
1235 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1236 m.ipInReceive_lo;
1237 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1238 m.ipInHdrErrors_lo;
1239 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1240 m.ipInAddrErrors_lo;
1241 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1242 m.ipInUnknownProtos_lo;
1243 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1244 m.ipInDiscards_lo;
1245 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1246 m.ipInDelivers_lo;
1247 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1248 m.ipOutRequests_lo;
1249 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1250 m.ipOutDiscards_lo;
1251 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1252 m.ipOutNoRoutes_lo;
1253 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1254 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1255 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1256 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1257 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1258 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1259 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1260 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1261 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1262 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1263 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1264 m.tcpInSegs_lo;
1265 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1266 m.tcpOutSegs_lo;
1267 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1268 m.tcpRetransSeg_lo;
1269 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1270 m.tcpInErrs_lo;
1271 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1272 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1273 return 0;
1274}
1275
f4e91eb4
TJ		 1276static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1277static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1278static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1279static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
b038ced7 1280
f4e91eb4
TJ		 1281static struct device_attribute *iwch_class_attributes[] = {
1282 &dev_attr_hw_rev,
1283 &dev_attr_fw_ver,
1284 &dev_attr_hca_type,
14cc180f 1285 &dev_attr_board_id,
b038ced7
SW		 1286};
1287
7738613e
IW		 1288static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
1289 struct ib_port_immutable *immutable)
1290{
1291 struct ib_port_attr attr;
1292 int err;
1293
1294 err = iwch_query_port(ibdev, port_num, &attr);
1295 if (err)
1296 return err;
1297
1298 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1299 immutable->gid_tbl_len = attr.gid_tbl_len;
f9b22e35 1300 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
7738613e
IW		 1301
1302 return 0;
1303}
1304
b038ced7
SW		 1305int iwch_register_device(struct iwch_dev *dev)
1306{
1307 int ret;
1308 int i;
1309
33718363 1310 PDBG("%s iwch_dev %p\n", __func__, dev);
b038ced7
SW		 1311 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1312 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1313 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1314 dev->ibdev.owner = THIS_MODULE;
be43324d
SW		 1315 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1316 IB_DEVICE_MEM_WINDOW |
1317 IB_DEVICE_MEM_MGT_EXTENSIONS;
96f15c03
SW		 1318
1319 /* cxgb3 supports STag 0. */
1320 dev->ibdev.local_dma_lkey = 0;
b038ced7
SW		 1321
1322 dev->ibdev.uverbs_cmd_mask =
1323 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1324 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1325 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1326 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1327 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1328 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1329 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1330 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1331 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1332 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1333 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1334 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1335 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1336 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1337 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1338 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1339 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1340 dev->ibdev.node_type = RDMA_NODE_RNIC;
1341 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1342 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
f4fd0b22 1343 dev->ibdev.num_comp_vectors = 1;
b038ced7 1344 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
b038ced7
SW		 1345 dev->ibdev.query_device = iwch_query_device;
1346 dev->ibdev.query_port = iwch_query_port;
b038ced7
SW		 1347 dev->ibdev.query_pkey = iwch_query_pkey;
1348 dev->ibdev.query_gid = iwch_query_gid;
1349 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1350 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1351 dev->ibdev.mmap = iwch_mmap;
1352 dev->ibdev.alloc_pd = iwch_allocate_pd;
1353 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1354 dev->ibdev.create_ah = iwch_ah_create;
1355 dev->ibdev.destroy_ah = iwch_ah_destroy;
1356 dev->ibdev.create_qp = iwch_create_qp;
1357 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1358 dev->ibdev.destroy_qp = iwch_destroy_qp;
1359 dev->ibdev.create_cq = iwch_create_cq;
1360 dev->ibdev.destroy_cq = iwch_destroy_cq;
1361 dev->ibdev.resize_cq = iwch_resize_cq;
1362 dev->ibdev.poll_cq = iwch_poll_cq;
1363 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
b038ced7
SW		 1364 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1365 dev->ibdev.dereg_mr = iwch_dereg_mr;
1366 dev->ibdev.alloc_mw = iwch_alloc_mw;
b038ced7 1367 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
f683d3bd 1368 dev->ibdev.alloc_mr = iwch_alloc_mr;
14fb4171 1369 dev->ibdev.map_mr_sg = iwch_map_mr_sg;
b038ced7
SW		 1370 dev->ibdev.attach_mcast = iwch_multicast_attach;
1371 dev->ibdev.detach_mcast = iwch_multicast_detach;
1372 dev->ibdev.process_mad = iwch_process_mad;
b038ced7
SW		 1373 dev->ibdev.req_notify_cq = iwch_arm_cq;
1374 dev->ibdev.post_send = iwch_post_send;
1375 dev->ibdev.post_recv = iwch_post_receive;
14cc180f 1376 dev->ibdev.get_protocol_stats = iwch_get_mib;
b955150e 1377 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
7738613e 1378 dev->ibdev.get_port_immutable = iwch_port_immutable;
b038ced7 1379
6abb6ea8
WC		 1380 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1381 if (!dev->ibdev.iwcm)
1382 return -ENOMEM;
1383
b038ced7
SW		 1384 dev->ibdev.iwcm->connect = iwch_connect;
1385 dev->ibdev.iwcm->accept = iwch_accept_cr;
1386 dev->ibdev.iwcm->reject = iwch_reject_cr;
1387 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1388 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1389 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1390 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1391 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1392
9a6edb60 1393 ret = ib_register_device(&dev->ibdev, NULL);
b038ced7
SW		 1394 if (ret)
1395 goto bail1;
1396
1397 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
f4e91eb4
TJ		 1398 ret = device_create_file(&dev->ibdev.dev,
1399 iwch_class_attributes[i]);
b038ced7
SW		 1400 if (ret) {
1401 goto bail2;
1402 }
1403 }
1404 return 0;
1405bail2:
1406 ib_unregister_device(&dev->ibdev);
1407bail1:
3793d2fc 1408 kfree(dev->ibdev.iwcm);
b038ced7
SW		 1409 return ret;
1410}
1411
1412void iwch_unregister_device(struct iwch_dev *dev)
1413{
1414 int i;
1415
33718363 1416 PDBG("%s iwch_dev %p\n", __func__, dev);
b038ced7 1417 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
f4e91eb4
TJ		 1418 device_remove_file(&dev->ibdev.dev,
1419 iwch_class_attributes[i]);
b038ced7 1420 ib_unregister_device(&dev->ibdev);
3793d2fc 1421 kfree(dev->ibdev.iwcm);
b038ced7
SW		 1422 return;
1423}
Linux kernel - Deliverables
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