SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/infiniband/hw/cxgb3/iwch_provider.c

   1 /*
   2  * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32 #include <linux/module.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/device.h>
  35 #include <linux/netdevice.h>
  36 #include <linux/etherdevice.h>
  37 #include <linux/delay.h>
  38 #include <linux/errno.h>
  39 #include <linux/list.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/ethtool.h>
  42
  43 #include <asm/io.h>
  44 #include <asm/irq.h>
  45 #include <asm/byteorder.h>
  46
  47 #include <rdma/iw_cm.h>
  48 #include <rdma/ib_verbs.h>
  49 #include <rdma/ib_smi.h>
  50 #include <rdma/ib_user_verbs.h>
  51
  52 #include "cxio_hal.h"
  53 #include "iwch.h"
  54 #include "iwch_provider.h"
  55 #include "iwch_cm.h"
  56 #include "iwch_user.h"
  57
  58 static int iwch_modify_port(struct ib_device *ibdev,
  59                             u8 port, int port_modify_mask,
  60                             struct ib_port_modify *props)
  61 {
  62         return -ENOSYS;
  63 }
  64
  65 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
  66                                     struct ib_ah_attr *ah_attr)
  67 {
  68         return ERR_PTR(-ENOSYS);
  69 }
  70
  71 static int iwch_ah_destroy(struct ib_ah *ah)
  72 {
  73         return -ENOSYS;
  74 }
  75
  76 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  77 {
  78         return -ENOSYS;
  79 }
  80
  81 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  82 {
  83         return -ENOSYS;
  84 }
  85
  86 static int iwch_process_mad(struct ib_device *ibdev,
  87                             int mad_flags,
  88                             u8 port_num,
  89                             struct ib_wc *in_wc,
  90                             struct ib_grh *in_grh,
  91                             struct ib_mad *in_mad, struct ib_mad *out_mad)
  92 {
  93         return -ENOSYS;
  94 }
  95
  96 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
  97 {
  98         struct iwch_dev *rhp = to_iwch_dev(context->device);
  99         struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
 100         struct iwch_mm_entry *mm, *tmp;
 101
 102         PDBG("%s context %p\n", __FUNCTION__, context);
 103         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
 104                 kfree(mm);
 105         cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
 106         kfree(ucontext);
 107         return 0;
 108 }
 109
 110 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
 111                                         struct ib_udata *udata)
 112 {
 113         struct iwch_ucontext *context;
 114         struct iwch_dev *rhp = to_iwch_dev(ibdev);
 115
 116         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 117         context = kzalloc(sizeof(*context), GFP_KERNEL);
 118         if (!context)
 119                 return ERR_PTR(-ENOMEM);
 120         cxio_init_ucontext(&rhp->rdev, &context->uctx);
 121         INIT_LIST_HEAD(&context->mmaps);
 122         spin_lock_init(&context->mmap_lock);
 123         return &context->ibucontext;
 124 }
 125
 126 static int iwch_destroy_cq(struct ib_cq *ib_cq)
 127 {
 128         struct iwch_cq *chp;
 129
 130         PDBG("%s ib_cq %p\n", __FUNCTION__, ib_cq);
 131         chp = to_iwch_cq(ib_cq);
 132
 133         remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
 134         atomic_dec(&chp->refcnt);
 135         wait_event(chp->wait, !atomic_read(&chp->refcnt));
 136
 137         cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
 138         kfree(chp);
 139         return 0;
 140 }
 141
 142 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
 143                              struct ib_ucontext *ib_context,
 144                              struct ib_udata *udata)
 145 {
 146         struct iwch_dev *rhp;
 147         struct iwch_cq *chp;
 148         struct iwch_create_cq_resp uresp;
 149         struct iwch_create_cq_req ureq;
 150         struct iwch_ucontext *ucontext = NULL;
 151
 152         PDBG("%s ib_dev %p entries %d\n", __FUNCTION__, ibdev, entries);
 153         rhp = to_iwch_dev(ibdev);
 154         chp = kzalloc(sizeof(*chp), GFP_KERNEL);
 155         if (!chp)
 156                 return ERR_PTR(-ENOMEM);
 157
 158         if (ib_context) {
 159                 ucontext = to_iwch_ucontext(ib_context);
 160                 if (!t3a_device(rhp)) {
 161                         if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
 162                                 kfree(chp);
 163                                 return ERR_PTR(-EFAULT);
 164                         }
 165                         chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
 166                 }
 167         }
 168
 169         if (t3a_device(rhp)) {
 170
 171                 /*
 172                  * T3A: Add some fluff to handle extra CQEs inserted
 173                  * for various errors.
 174                  * Additional CQE possibilities:
 175                  *      TERMINATE,
 176                  *      incoming RDMA WRITE Failures
 177                  *      incoming RDMA READ REQUEST FAILUREs
 178                  * NOTE: We cannot ensure the CQ won't overflow.
 179                  */
 180                 entries += 16;
 181         }
 182         entries = roundup_pow_of_two(entries);
 183         chp->cq.size_log2 = ilog2(entries);
 184
 185         if (cxio_create_cq(&rhp->rdev, &chp->cq)) {
 186                 kfree(chp);
 187                 return ERR_PTR(-ENOMEM);
 188         }
 189         chp->rhp = rhp;
 190         chp->ibcq.cqe = (1 << chp->cq.size_log2) - 1;
 191         spin_lock_init(&chp->lock);
 192         atomic_set(&chp->refcnt, 1);
 193         init_waitqueue_head(&chp->wait);
 194         insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
 195
 196         if (ucontext) {
 197                 struct iwch_mm_entry *mm;
 198
 199                 mm = kmalloc(sizeof *mm, GFP_KERNEL);
 200                 if (!mm) {
 201                         iwch_destroy_cq(&chp->ibcq);
 202                         return ERR_PTR(-ENOMEM);
 203                 }
 204                 uresp.cqid = chp->cq.cqid;
 205                 uresp.size_log2 = chp->cq.size_log2;
 206                 spin_lock(&ucontext->mmap_lock);
 207                 uresp.key = ucontext->key;
 208                 ucontext->key += PAGE_SIZE;
 209                 spin_unlock(&ucontext->mmap_lock);
 210                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 211                         kfree(mm);
 212                         iwch_destroy_cq(&chp->ibcq);
 213                         return ERR_PTR(-EFAULT);
 214                 }
 215                 mm->key = uresp.key;
 216                 mm->addr = virt_to_phys(chp->cq.queue);
 217                 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
 218                                              sizeof (struct t3_cqe));
 219                 insert_mmap(ucontext, mm);
 220         }
 221         PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
 222              chp->cq.cqid, chp, (1 << chp->cq.size_log2),
 223              (unsigned long long) chp->cq.dma_addr);
 224         return &chp->ibcq;
 225 }
 226
 227 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
 228 {
 229 #ifdef notyet
 230         struct iwch_cq *chp = to_iwch_cq(cq);
 231         struct t3_cq oldcq, newcq;
 232         int ret;
 233
 234         PDBG("%s ib_cq %p cqe %d\n", __FUNCTION__, cq, cqe);
 235
 236         /* We don't downsize... */
 237         if (cqe <= cq->cqe)
 238                 return 0;
 239
 240         /* create new t3_cq with new size */
 241         cqe = roundup_pow_of_two(cqe+1);
 242         newcq.size_log2 = ilog2(cqe);
 243
 244         /* Dont allow resize to less than the current wce count */
 245         if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
 246                 return -ENOMEM;
 247         }
 248
 249         /* Quiesce all QPs using this CQ */
 250         ret = iwch_quiesce_qps(chp);
 251         if (ret) {
 252                 return ret;
 253         }
 254
 255         ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
 256         if (ret) {
 257                 return ret;
 258         }
 259
 260         /* copy CQEs */
 261         memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
 262                                         sizeof(struct t3_cqe));
 263
 264         /* old iwch_qp gets new t3_cq but keeps old cqid */
 265         oldcq = chp->cq;
 266         chp->cq = newcq;
 267         chp->cq.cqid = oldcq.cqid;
 268
 269         /* resize new t3_cq to update the HW context */
 270         ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
 271         if (ret) {
 272                 chp->cq = oldcq;
 273                 return ret;
 274         }
 275         chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
 276
 277         /* destroy old t3_cq */
 278         oldcq.cqid = newcq.cqid;
 279         ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
 280         if (ret) {
 281                 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
 282                         __FUNCTION__, ret);
 283         }
 284
 285         /* add user hooks here */
 286
 287         /* resume qps */
 288         ret = iwch_resume_qps(chp);
 289         return ret;
 290 #else
 291         return -ENOSYS;
 292 #endif
 293 }
 294
 295 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify notify)
 296 {
 297         struct iwch_dev *rhp;
 298         struct iwch_cq *chp;
 299         enum t3_cq_opcode cq_op;
 300         int err;
 301         unsigned long flag;
 302         u32 rptr;
 303
 304         chp = to_iwch_cq(ibcq);
 305         rhp = chp->rhp;
 306         if (notify == IB_CQ_SOLICITED)
 307                 cq_op = CQ_ARM_SE;
 308         else
 309                 cq_op = CQ_ARM_AN;
 310         if (chp->user_rptr_addr) {
 311                 if (get_user(rptr, chp->user_rptr_addr))
 312                         return -EFAULT;
 313                 spin_lock_irqsave(&chp->lock, flag);
 314                 chp->cq.rptr = rptr;
 315         } else
 316                 spin_lock_irqsave(&chp->lock, flag);
 317         PDBG("%s rptr 0x%x\n", __FUNCTION__, chp->cq.rptr);
 318         err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
 319         spin_unlock_irqrestore(&chp->lock, flag);
 320         if (err)
 321                 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
 322                        chp->cq.cqid);
 323         return err;
 324 }
 325
 326 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 327 {
 328         int len = vma->vm_end - vma->vm_start;
 329         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 330         struct cxio_rdev *rdev_p;
 331         int ret = 0;
 332         struct iwch_mm_entry *mm;
 333         struct iwch_ucontext *ucontext;
 334         u64 addr;
 335
 336         PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __FUNCTION__, vma->vm_pgoff,
 337              key, len);
 338
 339         if (vma->vm_start & (PAGE_SIZE-1)) {
 340                 return -EINVAL;
 341         }
 342
 343         rdev_p = &(to_iwch_dev(context->device)->rdev);
 344         ucontext = to_iwch_ucontext(context);
 345
 346         mm = remove_mmap(ucontext, key, len);
 347         if (!mm)
 348                 return -EINVAL;
 349         addr = mm->addr;
 350         kfree(mm);
 351
 352         if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
 353             (addr < (rdev_p->rnic_info.udbell_physbase +
 354                        rdev_p->rnic_info.udbell_len))) {
 355
 356                 /*
 357                  * Map T3 DB register.
 358                  */
 359                 if (vma->vm_flags & VM_READ) {
 360                         return -EPERM;
 361                 }
 362
 363                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 364                 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
 365                 vma->vm_flags &= ~VM_MAYREAD;
 366                 ret = io_remap_pfn_range(vma, vma->vm_start,
 367                                          addr >> PAGE_SHIFT,
 368                                          len, vma->vm_page_prot);
 369         } else {
 370
 371                 /*
 372                  * Map WQ or CQ contig dma memory...
 373                  */
 374                 ret = remap_pfn_range(vma, vma->vm_start,
 375                                       addr >> PAGE_SHIFT,
 376                                       len, vma->vm_page_prot);
 377         }
 378
 379         return ret;
 380 }
 381
 382 static int iwch_deallocate_pd(struct ib_pd *pd)
 383 {
 384         struct iwch_dev *rhp;
 385         struct iwch_pd *php;
 386
 387         php = to_iwch_pd(pd);
 388         rhp = php->rhp;
 389         PDBG("%s ibpd %p pdid 0x%x\n", __FUNCTION__, pd, php->pdid);
 390         cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
 391         kfree(php);
 392         return 0;
 393 }
 394
 395 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
 396                                struct ib_ucontext *context,
 397                                struct ib_udata *udata)
 398 {
 399         struct iwch_pd *php;
 400         u32 pdid;
 401         struct iwch_dev *rhp;
 402
 403         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 404         rhp = (struct iwch_dev *) ibdev;
 405         pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
 406         if (!pdid)
 407                 return ERR_PTR(-EINVAL);
 408         php = kzalloc(sizeof(*php), GFP_KERNEL);
 409         if (!php) {
 410                 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
 411                 return ERR_PTR(-ENOMEM);
 412         }
 413         php->pdid = pdid;
 414         php->rhp = rhp;
 415         if (context) {
 416                 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
 417                         iwch_deallocate_pd(&php->ibpd);
 418                         return ERR_PTR(-EFAULT);
 419                 }
 420         }
 421         PDBG("%s pdid 0x%0x ptr 0x%p\n", __FUNCTION__, pdid, php);
 422         return &php->ibpd;
 423 }
 424
 425 static int iwch_dereg_mr(struct ib_mr *ib_mr)
 426 {
 427         struct iwch_dev *rhp;
 428         struct iwch_mr *mhp;
 429         u32 mmid;
 430
 431         PDBG("%s ib_mr %p\n", __FUNCTION__, ib_mr);
 432         /* There can be no memory windows */
 433         if (atomic_read(&ib_mr->usecnt))
 434                 return -EINVAL;
 435
 436         mhp = to_iwch_mr(ib_mr);
 437         rhp = mhp->rhp;
 438         mmid = mhp->attr.stag >> 8;
 439         cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
 440                        mhp->attr.pbl_addr);
 441         remove_handle(rhp, &rhp->mmidr, mmid);
 442         if (mhp->kva)
 443                 kfree((void *) (unsigned long) mhp->kva);
 444         PDBG("%s mmid 0x%x ptr %p\n", __FUNCTION__, mmid, mhp);
 445         kfree(mhp);
 446         return 0;
 447 }
 448
 449 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
 450                                         struct ib_phys_buf *buffer_list,
 451                                         int num_phys_buf,
 452                                         int acc,
 453                                         u64 *iova_start)
 454 {
 455         __be64 *page_list;
 456         int shift;
 457         u64 total_size;
 458         int npages;
 459         struct iwch_dev *rhp;
 460         struct iwch_pd *php;
 461         struct iwch_mr *mhp;
 462         int ret;
 463
 464         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 465         php = to_iwch_pd(pd);
 466         rhp = php->rhp;
 467
 468         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 469         if (!mhp)
 470                 return ERR_PTR(-ENOMEM);
 471
 472         /* First check that we have enough alignment */
 473         if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
 474                 ret = -EINVAL;
 475                 goto err;
 476         }
 477
 478         if (num_phys_buf > 1 &&
 479             ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
 480                 ret = -EINVAL;
 481                 goto err;
 482         }
 483
 484         ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
 485                                    &total_size, &npages, &shift, &page_list);
 486         if (ret)
 487                 goto err;
 488
 489         mhp->rhp = rhp;
 490         mhp->attr.pdid = php->pdid;
 491         mhp->attr.zbva = 0;
 492
 493         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 494         mhp->attr.va_fbo = *iova_start;
 495         mhp->attr.page_size = shift - 12;
 496
 497         mhp->attr.len = (u32) total_size;
 498         mhp->attr.pbl_size = npages;
 499         ret = iwch_register_mem(rhp, php, mhp, shift, page_list);
 500         kfree(page_list);
 501         if (ret) {
 502                 goto err;
 503         }
 504         return &mhp->ibmr;
 505 err:
 506         kfree(mhp);
 507         return ERR_PTR(ret);
 508
 509 }
 510
 511 static int iwch_reregister_phys_mem(struct ib_mr *mr,
 512                                      int mr_rereg_mask,
 513                                      struct ib_pd *pd,
 514                                      struct ib_phys_buf *buffer_list,
 515                                      int num_phys_buf,
 516                                      int acc, u64 * iova_start)
 517 {
 518
 519         struct iwch_mr mh, *mhp;
 520         struct iwch_pd *php;
 521         struct iwch_dev *rhp;
 522         __be64 *page_list = NULL;
 523         int shift = 0;
 524         u64 total_size;
 525         int npages;
 526         int ret;
 527
 528         PDBG("%s ib_mr %p ib_pd %p\n", __FUNCTION__, mr, pd);
 529
 530         /* There can be no memory windows */
 531         if (atomic_read(&mr->usecnt))
 532                 return -EINVAL;
 533
 534         mhp = to_iwch_mr(mr);
 535         rhp = mhp->rhp;
 536         php = to_iwch_pd(mr->pd);
 537
 538         /* make sure we are on the same adapter */
 539         if (rhp != php->rhp)
 540                 return -EINVAL;
 541
 542         memcpy(&mh, mhp, sizeof *mhp);
 543
 544         if (mr_rereg_mask & IB_MR_REREG_PD)
 545                 php = to_iwch_pd(pd);
 546         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 547                 mh.attr.perms = iwch_ib_to_tpt_access(acc);
 548         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
 549                 ret = build_phys_page_list(buffer_list, num_phys_buf,
 550                                            iova_start,
 551                                            &total_size, &npages,
 552                                            &shift, &page_list);
 553                 if (ret)
 554                         return ret;
 555         }
 556
 557         ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
 558         kfree(page_list);
 559         if (ret) {
 560                 return ret;
 561         }
 562         if (mr_rereg_mask & IB_MR_REREG_PD)
 563                 mhp->attr.pdid = php->pdid;
 564         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 565                 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 566         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
 567                 mhp->attr.zbva = 0;
 568                 mhp->attr.va_fbo = *iova_start;
 569                 mhp->attr.page_size = shift - 12;
 570                 mhp->attr.len = (u32) total_size;
 571                 mhp->attr.pbl_size = npages;
 572         }
 573
 574         return 0;
 575 }
 576
 577
 578 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
 579                                       int acc, struct ib_udata *udata)
 580 {
 581         __be64 *pages;
 582         int shift, n, len;
 583         int i, j, k;
 584         int err = 0;
 585         struct ib_umem_chunk *chunk;
 586         struct iwch_dev *rhp;
 587         struct iwch_pd *php;
 588         struct iwch_mr *mhp;
 589         struct iwch_reg_user_mr_resp uresp;
 590
 591         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 592         shift = ffs(region->page_size) - 1;
 593
 594         php = to_iwch_pd(pd);
 595         rhp = php->rhp;
 596         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 597         if (!mhp)
 598                 return ERR_PTR(-ENOMEM);
 599
 600         n = 0;
 601         list_for_each_entry(chunk, &region->chunk_list, list)
 602                 n += chunk->nents;
 603
 604         pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
 605         if (!pages) {
 606                 err = -ENOMEM;
 607                 goto err;
 608         }
 609
 610         i = n = 0;
 611
 612         list_for_each_entry(chunk, &region->chunk_list, list)
 613                 for (j = 0; j < chunk->nmap; ++j) {
 614                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
 615                         for (k = 0; k < len; ++k) {
 616                                 pages[i++] = cpu_to_be64(sg_dma_address(
 617                                         &chunk->page_list[j]) +
 618                                         region->page_size * k);
 619                         }
 620                 }
 621
 622         mhp->rhp = rhp;
 623         mhp->attr.pdid = php->pdid;
 624         mhp->attr.zbva = 0;
 625         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 626         mhp->attr.va_fbo = region->virt_base;
 627         mhp->attr.page_size = shift - 12;
 628         mhp->attr.len = (u32) region->length;
 629         mhp->attr.pbl_size = i;
 630         err = iwch_register_mem(rhp, php, mhp, shift, pages);
 631         kfree(pages);
 632         if (err)
 633                 goto err;
 634
 635         if (udata && t3b_device(rhp)) {
 636                 uresp.pbl_addr = (mhp->attr.pbl_addr -
 637                                  rhp->rdev.rnic_info.pbl_base) >> 3;
 638                 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
 639                      uresp.pbl_addr);
 640
 641                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 642                         iwch_dereg_mr(&mhp->ibmr);
 643                         err = -EFAULT;
 644                         goto err;
 645                 }
 646         }
 647
 648         return &mhp->ibmr;
 649
 650 err:
 651         kfree(mhp);
 652         return ERR_PTR(err);
 653 }
 654
 655 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
 656 {
 657         struct ib_phys_buf bl;
 658         u64 kva;
 659         struct ib_mr *ibmr;
 660
 661         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 662
 663         /*
 664          * T3 only supports 32 bits of size.
 665          */
 666         bl.size = 0xffffffff;
 667         bl.addr = 0;
 668         kva = 0;
 669         ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
 670         return ibmr;
 671 }
 672
 673 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
 674 {
 675         struct iwch_dev *rhp;
 676         struct iwch_pd *php;
 677         struct iwch_mw *mhp;
 678         u32 mmid;
 679         u32 stag = 0;
 680         int ret;
 681
 682         php = to_iwch_pd(pd);
 683         rhp = php->rhp;
 684         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 685         if (!mhp)
 686                 return ERR_PTR(-ENOMEM);
 687         ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
 688         if (ret) {
 689                 kfree(mhp);
 690                 return ERR_PTR(ret);
 691         }
 692         mhp->rhp = rhp;
 693         mhp->attr.pdid = php->pdid;
 694         mhp->attr.type = TPT_MW;
 695         mhp->attr.stag = stag;
 696         mmid = (stag) >> 8;
 697         insert_handle(rhp, &rhp->mmidr, mhp, mmid);
 698         PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
 699         return &(mhp->ibmw);
 700 }
 701
 702 static int iwch_dealloc_mw(struct ib_mw *mw)
 703 {
 704         struct iwch_dev *rhp;
 705         struct iwch_mw *mhp;
 706         u32 mmid;
 707
 708         mhp = to_iwch_mw(mw);
 709         rhp = mhp->rhp;
 710         mmid = (mw->rkey) >> 8;
 711         cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
 712         remove_handle(rhp, &rhp->mmidr, mmid);
 713         kfree(mhp);
 714         PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
 715         return 0;
 716 }
 717
 718 static int iwch_destroy_qp(struct ib_qp *ib_qp)
 719 {
 720         struct iwch_dev *rhp;
 721         struct iwch_qp *qhp;
 722         struct iwch_qp_attributes attrs;
 723         struct iwch_ucontext *ucontext;
 724
 725         qhp = to_iwch_qp(ib_qp);
 726         rhp = qhp->rhp;
 727
 728         attrs.next_state = IWCH_QP_STATE_ERROR;
 729         iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
 730         wait_event(qhp->wait, !qhp->ep);
 731
 732         remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
 733
 734         atomic_dec(&qhp->refcnt);
 735         wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
 736
 737         ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
 738                                   : NULL;
 739         cxio_destroy_qp(&rhp->rdev, &qhp->wq,
 740                         ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
 741
 742         PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __FUNCTION__,
 743              ib_qp, qhp->wq.qpid, qhp);
 744         kfree(qhp);
 745         return 0;
 746 }
 747
 748 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
 749                              struct ib_qp_init_attr *attrs,
 750                              struct ib_udata *udata)
 751 {
 752         struct iwch_dev *rhp;
 753         struct iwch_qp *qhp;
 754         struct iwch_pd *php;
 755         struct iwch_cq *schp;
 756         struct iwch_cq *rchp;
 757         struct iwch_create_qp_resp uresp;
 758         int wqsize, sqsize, rqsize;
 759         struct iwch_ucontext *ucontext;
 760
 761         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 762         if (attrs->qp_type != IB_QPT_RC)
 763                 return ERR_PTR(-EINVAL);
 764         php = to_iwch_pd(pd);
 765         rhp = php->rhp;
 766         schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
 767         rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
 768         if (!schp || !rchp)
 769                 return ERR_PTR(-EINVAL);
 770
 771         /* The RQT size must be # of entries + 1 rounded up to a power of two */
 772         rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
 773         if (rqsize == attrs->cap.max_recv_wr)
 774                 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
 775
 776         /* T3 doesn't support RQT depth < 16 */
 777         if (rqsize < 16)
 778                 rqsize = 16;
 779
 780         if (rqsize > T3_MAX_RQ_SIZE)
 781                 return ERR_PTR(-EINVAL);
 782
 783         if (attrs->cap.max_inline_data > T3_MAX_INLINE)
 784                 return ERR_PTR(-EINVAL);
 785
 786         /*
 787          * NOTE: The SQ and total WQ sizes don't need to be
 788          * a power of two.  However, all the code assumes
 789          * they are. EG: Q_FREECNT() and friends.
 790          */
 791         sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
 792         wqsize = roundup_pow_of_two(rqsize + sqsize);
 793         PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
 794              wqsize, sqsize, rqsize);
 795         qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
 796         if (!qhp)
 797                 return ERR_PTR(-ENOMEM);
 798         qhp->wq.size_log2 = ilog2(wqsize);
 799         qhp->wq.rq_size_log2 = ilog2(rqsize);
 800         qhp->wq.sq_size_log2 = ilog2(sqsize);
 801         ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
 802         if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
 803                            ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
 804                 kfree(qhp);
 805                 return ERR_PTR(-ENOMEM);
 806         }
 807         attrs->cap.max_recv_wr = rqsize - 1;
 808         attrs->cap.max_send_wr = sqsize;
 809         qhp->rhp = rhp;
 810         qhp->attr.pd = php->pdid;
 811         qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
 812         qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
 813         qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
 814         qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
 815         qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
 816         qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
 817         qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
 818         qhp->attr.state = IWCH_QP_STATE_IDLE;
 819         qhp->attr.next_state = IWCH_QP_STATE_IDLE;
 820
 821         /*
 822          * XXX - These don't get passed in from the openib user
 823          * at create time.  The CM sets them via a QP modify.
 824          * Need to fix...  I think the CM should
 825          */
 826         qhp->attr.enable_rdma_read = 1;
 827         qhp->attr.enable_rdma_write = 1;
 828         qhp->attr.enable_bind = 1;
 829         qhp->attr.max_ord = 1;
 830         qhp->attr.max_ird = 1;
 831
 832         spin_lock_init(&qhp->lock);
 833         init_waitqueue_head(&qhp->wait);
 834         atomic_set(&qhp->refcnt, 1);
 835         insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
 836
 837         if (udata) {
 838
 839                 struct iwch_mm_entry *mm1, *mm2;
 840
 841                 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
 842                 if (!mm1) {
 843                         iwch_destroy_qp(&qhp->ibqp);
 844                         return ERR_PTR(-ENOMEM);
 845                 }
 846
 847                 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
 848                 if (!mm2) {
 849                         kfree(mm1);
 850                         iwch_destroy_qp(&qhp->ibqp);
 851                         return ERR_PTR(-ENOMEM);
 852                 }
 853
 854                 uresp.qpid = qhp->wq.qpid;
 855                 uresp.size_log2 = qhp->wq.size_log2;
 856                 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
 857                 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
 858                 spin_lock(&ucontext->mmap_lock);
 859                 uresp.key = ucontext->key;
 860                 ucontext->key += PAGE_SIZE;
 861                 uresp.db_key = ucontext->key;
 862                 ucontext->key += PAGE_SIZE;
 863                 spin_unlock(&ucontext->mmap_lock);
 864                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 865                         kfree(mm1);
 866                         kfree(mm2);
 867                         iwch_destroy_qp(&qhp->ibqp);
 868                         return ERR_PTR(-EFAULT);
 869                 }
 870                 mm1->key = uresp.key;
 871                 mm1->addr = virt_to_phys(qhp->wq.queue);
 872                 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
 873                 insert_mmap(ucontext, mm1);
 874                 mm2->key = uresp.db_key;
 875                 mm2->addr = qhp->wq.udb & PAGE_MASK;
 876                 mm2->len = PAGE_SIZE;
 877                 insert_mmap(ucontext, mm2);
 878         }
 879         qhp->ibqp.qp_num = qhp->wq.qpid;
 880         init_timer(&(qhp->timer));
 881         PDBG("%s sq_num_entries %d, rq_num_entries %d "
 882              "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
 883              __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
 884              qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
 885              1 << qhp->wq.size_log2);
 886         return &qhp->ibqp;
 887 }
 888
 889 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 890                       int attr_mask, struct ib_udata *udata)
 891 {
 892         struct iwch_dev *rhp;
 893         struct iwch_qp *qhp;
 894         enum iwch_qp_attr_mask mask = 0;
 895         struct iwch_qp_attributes attrs;
 896
 897         PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
 898
 899         /* iwarp does not support the RTR state */
 900         if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
 901                 attr_mask &= ~IB_QP_STATE;
 902
 903         /* Make sure we still have something left to do */
 904         if (!attr_mask)
 905                 return 0;
 906
 907         memset(&attrs, 0, sizeof attrs);
 908         qhp = to_iwch_qp(ibqp);
 909         rhp = qhp->rhp;
 910
 911         attrs.next_state = iwch_convert_state(attr->qp_state);
 912         attrs.enable_rdma_read = (attr->qp_access_flags &
 913                                IB_ACCESS_REMOTE_READ) ?  1 : 0;
 914         attrs.enable_rdma_write = (attr->qp_access_flags &
 915                                 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
 916         attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
 917
 918
 919         mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
 920         mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
 921                         (IWCH_QP_ATTR_ENABLE_RDMA_READ |
 922                          IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
 923                          IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
 924
 925         return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
 926 }
 927
 928 void iwch_qp_add_ref(struct ib_qp *qp)
 929 {
 930         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 931         atomic_inc(&(to_iwch_qp(qp)->refcnt));
 932 }
 933
 934 void iwch_qp_rem_ref(struct ib_qp *qp)
 935 {
 936         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 937         if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
 938                 wake_up(&(to_iwch_qp(qp)->wait));
 939 }
 940
 941 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
 942 {
 943         PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
 944         return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
 945 }
 946
 947
 948 static int iwch_query_pkey(struct ib_device *ibdev,
 949                            u8 port, u16 index, u16 * pkey)
 950 {
 951         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 952         *pkey = 0;
 953         return 0;
 954 }
 955
 956 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
 957                           int index, union ib_gid *gid)
 958 {
 959         struct iwch_dev *dev;
 960
 961         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 962                __FUNCTION__, ibdev, port, index, gid);
 963         dev = to_iwch_dev(ibdev);
 964         BUG_ON(port == 0 || port > 2);
 965         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 966         memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
 967         return 0;
 968 }
 969
 970 static int iwch_query_device(struct ib_device *ibdev,
 971                              struct ib_device_attr *props)
 972 {
 973
 974         struct iwch_dev *dev;
 975         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 976
 977         dev = to_iwch_dev(ibdev);
 978         memset(props, 0, sizeof *props);
 979         memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
 980         props->device_cap_flags = dev->device_cap_flags;
 981         props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
 982         props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
 983         props->max_mr_size = ~0ull;
 984         props->max_qp = dev->attr.max_qps;
 985         props->max_qp_wr = dev->attr.max_wrs;
 986         props->max_sge = dev->attr.max_sge_per_wr;
 987         props->max_sge_rd = 1;
 988         props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
 989         props->max_cq = dev->attr.max_cqs;
 990         props->max_cqe = dev->attr.max_cqes_per_cq;
 991         props->max_mr = dev->attr.max_mem_regs;
 992         props->max_pd = dev->attr.max_pds;
 993         props->local_ca_ack_delay = 0;
 994
 995         return 0;
 996 }
 997
 998 static int iwch_query_port(struct ib_device *ibdev,
 999                            u8 port, struct ib_port_attr *props)
1000 {
1001         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
1002         props->max_mtu = IB_MTU_4096;
1003         props->lid = 0;
1004         props->lmc = 0;
1005         props->sm_lid = 0;
1006         props->sm_sl = 0;
1007         props->state = IB_PORT_ACTIVE;
1008         props->phys_state = 0;
1009         props->port_cap_flags =
1010             IB_PORT_CM_SUP |
1011             IB_PORT_SNMP_TUNNEL_SUP |
1012             IB_PORT_REINIT_SUP |
1013             IB_PORT_DEVICE_MGMT_SUP |
1014             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1015         props->gid_tbl_len = 1;
1016         props->pkey_tbl_len = 1;
1017         props->qkey_viol_cntr = 0;
1018         props->active_width = 2;
1019         props->active_speed = 2;
1020         props->max_msg_sz = -1;
1021
1022         return 0;
1023 }
1024
1025 static ssize_t show_rev(struct class_device *cdev, char *buf)
1026 {
1027         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1028                                             ibdev.class_dev);
1029         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1030         return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1031 }
1032
1033 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1034 {
1035         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1036                                             ibdev.class_dev);
1037         struct ethtool_drvinfo info;
1038         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1039
1040         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1041         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1042         return sprintf(buf, "%s\n", info.fw_version);
1043 }
1044
1045 static ssize_t show_hca(struct class_device *cdev, char *buf)
1046 {
1047         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1048                                             ibdev.class_dev);
1049         struct ethtool_drvinfo info;
1050         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1051
1052         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1053         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1054         return sprintf(buf, "%s\n", info.driver);
1055 }
1056
1057 static ssize_t show_board(struct class_device *cdev, char *buf)
1058 {
1059         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1060                                             ibdev.class_dev);
1061         PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1062         return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1063                                        dev->rdev.rnic_info.pdev->device);
1064 }
1065
1066 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1067 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1068 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1069 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1070
1071 static struct class_device_attribute *iwch_class_attributes[] = {
1072         &class_device_attr_hw_rev,
1073         &class_device_attr_fw_ver,
1074         &class_device_attr_hca_type,
1075         &class_device_attr_board_id
1076 };
1077
1078 int iwch_register_device(struct iwch_dev *dev)
1079 {
1080         int ret;
1081         int i;
1082
1083         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1084         strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1085         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1086         memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1087         dev->ibdev.owner = THIS_MODULE;
1088         dev->device_cap_flags =
1089             (IB_DEVICE_ZERO_STAG |
1090              IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1091
1092         dev->ibdev.uverbs_cmd_mask =
1093             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1094             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1095             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1096             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1097             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1098             (1ull << IB_USER_VERBS_CMD_REG_MR) |
1099             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1100             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1101             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1102             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1103             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1104             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1105             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1106             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1107             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1108             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1109             (1ull << IB_USER_VERBS_CMD_POST_RECV);
1110         dev->ibdev.node_type = RDMA_NODE_RNIC;
1111         memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1112         dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1113         dev->ibdev.num_comp_vectors = 1;
1114         dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1115         dev->ibdev.query_device = iwch_query_device;
1116         dev->ibdev.query_port = iwch_query_port;
1117         dev->ibdev.modify_port = iwch_modify_port;
1118         dev->ibdev.query_pkey = iwch_query_pkey;
1119         dev->ibdev.query_gid = iwch_query_gid;
1120         dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1121         dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1122         dev->ibdev.mmap = iwch_mmap;
1123         dev->ibdev.alloc_pd = iwch_allocate_pd;
1124         dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1125         dev->ibdev.create_ah = iwch_ah_create;
1126         dev->ibdev.destroy_ah = iwch_ah_destroy;
1127         dev->ibdev.create_qp = iwch_create_qp;
1128         dev->ibdev.modify_qp = iwch_ib_modify_qp;
1129         dev->ibdev.destroy_qp = iwch_destroy_qp;
1130         dev->ibdev.create_cq = iwch_create_cq;
1131         dev->ibdev.destroy_cq = iwch_destroy_cq;
1132         dev->ibdev.resize_cq = iwch_resize_cq;
1133         dev->ibdev.poll_cq = iwch_poll_cq;
1134         dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1135         dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1136         dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1137         dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1138         dev->ibdev.dereg_mr = iwch_dereg_mr;
1139         dev->ibdev.alloc_mw = iwch_alloc_mw;
1140         dev->ibdev.bind_mw = iwch_bind_mw;
1141         dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1142
1143         dev->ibdev.attach_mcast = iwch_multicast_attach;
1144         dev->ibdev.detach_mcast = iwch_multicast_detach;
1145         dev->ibdev.process_mad = iwch_process_mad;
1146
1147         dev->ibdev.req_notify_cq = iwch_arm_cq;
1148         dev->ibdev.post_send = iwch_post_send;
1149         dev->ibdev.post_recv = iwch_post_receive;
1150
1151
1152         dev->ibdev.iwcm =
1153             (struct iw_cm_verbs *) kmalloc(sizeof(struct iw_cm_verbs),
1154                                            GFP_KERNEL);
1155         dev->ibdev.iwcm->connect = iwch_connect;
1156         dev->ibdev.iwcm->accept = iwch_accept_cr;
1157         dev->ibdev.iwcm->reject = iwch_reject_cr;
1158         dev->ibdev.iwcm->create_listen = iwch_create_listen;
1159         dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1160         dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1161         dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1162         dev->ibdev.iwcm->get_qp = iwch_get_qp;
1163
1164         ret = ib_register_device(&dev->ibdev);
1165         if (ret)
1166                 goto bail1;
1167
1168         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1169                 ret = class_device_create_file(&dev->ibdev.class_dev,
1170                                                iwch_class_attributes[i]);
1171                 if (ret) {
1172                         goto bail2;
1173                 }
1174         }
1175         return 0;
1176 bail2:
1177         ib_unregister_device(&dev->ibdev);
1178 bail1:
1179         return ret;
1180 }
1181
1182 void iwch_unregister_device(struct iwch_dev *dev)
1183 {
1184         int i;
1185
1186         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1187         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1188                 class_device_remove_file(&dev->ibdev.class_dev,
1189                                          iwch_class_attributes[i]);
1190         ib_unregister_device(&dev->ibdev);
1191         return;
1192 }