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,
 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
 554         ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
 555         kfree(page_list);
 556         if (ret) {
 557                 return ret;
 558         }
 559         if (mr_rereg_mask & IB_MR_REREG_PD)
 560                 mhp->attr.pdid = php->pdid;
 561         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 562                 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 563         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
 564                 mhp->attr.zbva = 0;
 565                 mhp->attr.va_fbo = *iova_start;
 566                 mhp->attr.page_size = shift - 12;
 567                 mhp->attr.len = (u32) total_size;
 568                 mhp->attr.pbl_size = npages;
 569         }
 570
 571         return 0;
 572 }
 573
 574
 575 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
 576                                       int acc, struct ib_udata *udata)
 577 {
 578         __be64 *pages;
 579         int shift, n, len;
 580         int i, j, k;
 581         int err = 0;
 582         struct ib_umem_chunk *chunk;
 583         struct iwch_dev *rhp;
 584         struct iwch_pd *php;
 585         struct iwch_mr *mhp;
 586         struct iwch_reg_user_mr_resp uresp;
 587
 588         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 589         shift = ffs(region->page_size) - 1;
 590
 591         php = to_iwch_pd(pd);
 592         rhp = php->rhp;
 593         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 594         if (!mhp)
 595                 return ERR_PTR(-ENOMEM);
 596
 597         n = 0;
 598         list_for_each_entry(chunk, &region->chunk_list, list)
 599                 n += chunk->nents;
 600
 601         pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
 602         if (!pages) {
 603                 err = -ENOMEM;
 604                 goto err;
 605         }
 606
 607         i = n = 0;
 608
 609         list_for_each_entry(chunk, &region->chunk_list, list)
 610                 for (j = 0; j < chunk->nmap; ++j) {
 611                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
 612                         for (k = 0; k < len; ++k) {
 613                                 pages[i++] = cpu_to_be64(sg_dma_address(
 614                                         &chunk->page_list[j]) +
 615                                         region->page_size * k);
 616                         }
 617                 }
 618
 619         mhp->rhp = rhp;
 620         mhp->attr.pdid = php->pdid;
 621         mhp->attr.zbva = 0;
 622         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 623         mhp->attr.va_fbo = region->virt_base;
 624         mhp->attr.page_size = shift - 12;
 625         mhp->attr.len = (u32) region->length;
 626         mhp->attr.pbl_size = i;
 627         err = iwch_register_mem(rhp, php, mhp, shift, pages);
 628         kfree(pages);
 629         if (err)
 630                 goto err;
 631
 632         if (udata && t3b_device(rhp)) {
 633                 uresp.pbl_addr = (mhp->attr.pbl_addr -
 634                                  rhp->rdev.rnic_info.pbl_base) >> 3;
 635                 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
 636                      uresp.pbl_addr);
 637
 638                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 639                         iwch_dereg_mr(&mhp->ibmr);
 640                         err = -EFAULT;
 641                         goto err;
 642                 }
 643         }
 644
 645         return &mhp->ibmr;
 646
 647 err:
 648         kfree(mhp);
 649         return ERR_PTR(err);
 650 }
 651
 652 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
 653 {
 654         struct ib_phys_buf bl;
 655         u64 kva;
 656         struct ib_mr *ibmr;
 657
 658         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 659
 660         /*
 661          * T3 only supports 32 bits of size.
 662          */
 663         bl.size = 0xffffffff;
 664         bl.addr = 0;
 665         kva = 0;
 666         ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
 667         return ibmr;
 668 }
 669
 670 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
 671 {
 672         struct iwch_dev *rhp;
 673         struct iwch_pd *php;
 674         struct iwch_mw *mhp;
 675         u32 mmid;
 676         u32 stag = 0;
 677         int ret;
 678
 679         php = to_iwch_pd(pd);
 680         rhp = php->rhp;
 681         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 682         if (!mhp)
 683                 return ERR_PTR(-ENOMEM);
 684         ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
 685         if (ret) {
 686                 kfree(mhp);
 687                 return ERR_PTR(ret);
 688         }
 689         mhp->rhp = rhp;
 690         mhp->attr.pdid = php->pdid;
 691         mhp->attr.type = TPT_MW;
 692         mhp->attr.stag = stag;
 693         mmid = (stag) >> 8;
 694         insert_handle(rhp, &rhp->mmidr, mhp, mmid);
 695         PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
 696         return &(mhp->ibmw);
 697 }
 698
 699 static int iwch_dealloc_mw(struct ib_mw *mw)
 700 {
 701         struct iwch_dev *rhp;
 702         struct iwch_mw *mhp;
 703         u32 mmid;
 704
 705         mhp = to_iwch_mw(mw);
 706         rhp = mhp->rhp;
 707         mmid = (mw->rkey) >> 8;
 708         cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
 709         remove_handle(rhp, &rhp->mmidr, mmid);
 710         kfree(mhp);
 711         PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
 712         return 0;
 713 }
 714
 715 static int iwch_destroy_qp(struct ib_qp *ib_qp)
 716 {
 717         struct iwch_dev *rhp;
 718         struct iwch_qp *qhp;
 719         struct iwch_qp_attributes attrs;
 720         struct iwch_ucontext *ucontext;
 721
 722         qhp = to_iwch_qp(ib_qp);
 723         rhp = qhp->rhp;
 724
 725         attrs.next_state = IWCH_QP_STATE_ERROR;
 726         iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
 727         wait_event(qhp->wait, !qhp->ep);
 728
 729         remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
 730
 731         atomic_dec(&qhp->refcnt);
 732         wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
 733
 734         ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
 735                                   : NULL;
 736         cxio_destroy_qp(&rhp->rdev, &qhp->wq,
 737                         ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
 738
 739         PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __FUNCTION__,
 740              ib_qp, qhp->wq.qpid, qhp);
 741         kfree(qhp);
 742         return 0;
 743 }
 744
 745 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
 746                              struct ib_qp_init_attr *attrs,
 747                              struct ib_udata *udata)
 748 {
 749         struct iwch_dev *rhp;
 750         struct iwch_qp *qhp;
 751         struct iwch_pd *php;
 752         struct iwch_cq *schp;
 753         struct iwch_cq *rchp;
 754         struct iwch_create_qp_resp uresp;
 755         int wqsize, sqsize, rqsize;
 756         struct iwch_ucontext *ucontext;
 757
 758         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 759         if (attrs->qp_type != IB_QPT_RC)
 760                 return ERR_PTR(-EINVAL);
 761         php = to_iwch_pd(pd);
 762         rhp = php->rhp;
 763         schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
 764         rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
 765         if (!schp || !rchp)
 766                 return ERR_PTR(-EINVAL);
 767
 768         /* The RQT size must be # of entries + 1 rounded up to a power of two */
 769         rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
 770         if (rqsize == attrs->cap.max_recv_wr)
 771                 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
 772
 773         /* T3 doesn't support RQT depth < 16 */
 774         if (rqsize < 16)
 775                 rqsize = 16;
 776
 777         if (rqsize > T3_MAX_RQ_SIZE)
 778                 return ERR_PTR(-EINVAL);
 779
 780         /*
 781          * NOTE: The SQ and total WQ sizes don't need to be
 782          * a power of two.  However, all the code assumes
 783          * they are. EG: Q_FREECNT() and friends.
 784          */
 785         sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
 786         wqsize = roundup_pow_of_two(rqsize + sqsize);
 787         PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
 788              wqsize, sqsize, rqsize);
 789         qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
 790         if (!qhp)
 791                 return ERR_PTR(-ENOMEM);
 792         qhp->wq.size_log2 = ilog2(wqsize);
 793         qhp->wq.rq_size_log2 = ilog2(rqsize);
 794         qhp->wq.sq_size_log2 = ilog2(sqsize);
 795         ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
 796         if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
 797                            ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
 798                 kfree(qhp);
 799                 return ERR_PTR(-ENOMEM);
 800         }
 801         attrs->cap.max_recv_wr = rqsize - 1;
 802         attrs->cap.max_send_wr = sqsize;
 803         qhp->rhp = rhp;
 804         qhp->attr.pd = php->pdid;
 805         qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
 806         qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
 807         qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
 808         qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
 809         qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
 810         qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
 811         qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
 812         qhp->attr.state = IWCH_QP_STATE_IDLE;
 813         qhp->attr.next_state = IWCH_QP_STATE_IDLE;
 814
 815         /*
 816          * XXX - These don't get passed in from the openib user
 817          * at create time.  The CM sets them via a QP modify.
 818          * Need to fix...  I think the CM should
 819          */
 820         qhp->attr.enable_rdma_read = 1;
 821         qhp->attr.enable_rdma_write = 1;
 822         qhp->attr.enable_bind = 1;
 823         qhp->attr.max_ord = 1;
 824         qhp->attr.max_ird = 1;
 825
 826         spin_lock_init(&qhp->lock);
 827         init_waitqueue_head(&qhp->wait);
 828         atomic_set(&qhp->refcnt, 1);
 829         insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
 830
 831         if (udata) {
 832
 833                 struct iwch_mm_entry *mm1, *mm2;
 834
 835                 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
 836                 if (!mm1) {
 837                         iwch_destroy_qp(&qhp->ibqp);
 838                         return ERR_PTR(-ENOMEM);
 839                 }
 840
 841                 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
 842                 if (!mm2) {
 843                         kfree(mm1);
 844                         iwch_destroy_qp(&qhp->ibqp);
 845                         return ERR_PTR(-ENOMEM);
 846                 }
 847
 848                 uresp.qpid = qhp->wq.qpid;
 849                 uresp.size_log2 = qhp->wq.size_log2;
 850                 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
 851                 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
 852                 spin_lock(&ucontext->mmap_lock);
 853                 uresp.key = ucontext->key;
 854                 ucontext->key += PAGE_SIZE;
 855                 uresp.db_key = ucontext->key;
 856                 ucontext->key += PAGE_SIZE;
 857                 spin_unlock(&ucontext->mmap_lock);
 858                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 859                         kfree(mm1);
 860                         kfree(mm2);
 861                         iwch_destroy_qp(&qhp->ibqp);
 862                         return ERR_PTR(-EFAULT);
 863                 }
 864                 mm1->key = uresp.key;
 865                 mm1->addr = virt_to_phys(qhp->wq.queue);
 866                 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
 867                 insert_mmap(ucontext, mm1);
 868                 mm2->key = uresp.db_key;
 869                 mm2->addr = qhp->wq.udb & PAGE_MASK;
 870                 mm2->len = PAGE_SIZE;
 871                 insert_mmap(ucontext, mm2);
 872         }
 873         qhp->ibqp.qp_num = qhp->wq.qpid;
 874         init_timer(&(qhp->timer));
 875         PDBG("%s sq_num_entries %d, rq_num_entries %d "
 876              "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
 877              __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
 878              qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
 879              1 << qhp->wq.size_log2);
 880         return &qhp->ibqp;
 881 }
 882
 883 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 884                       int attr_mask, struct ib_udata *udata)
 885 {
 886         struct iwch_dev *rhp;
 887         struct iwch_qp *qhp;
 888         enum iwch_qp_attr_mask mask = 0;
 889         struct iwch_qp_attributes attrs;
 890
 891         PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
 892
 893         /* iwarp does not support the RTR state */
 894         if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
 895                 attr_mask &= ~IB_QP_STATE;
 896
 897         /* Make sure we still have something left to do */
 898         if (!attr_mask)
 899                 return 0;
 900
 901         memset(&attrs, 0, sizeof attrs);
 902         qhp = to_iwch_qp(ibqp);
 903         rhp = qhp->rhp;
 904
 905         attrs.next_state = iwch_convert_state(attr->qp_state);
 906         attrs.enable_rdma_read = (attr->qp_access_flags &
 907                                IB_ACCESS_REMOTE_READ) ?  1 : 0;
 908         attrs.enable_rdma_write = (attr->qp_access_flags &
 909                                 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
 910         attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
 911
 912
 913         mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
 914         mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
 915                         (IWCH_QP_ATTR_ENABLE_RDMA_READ |
 916                          IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
 917                          IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
 918
 919         return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
 920 }
 921
 922 void iwch_qp_add_ref(struct ib_qp *qp)
 923 {
 924         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 925         atomic_inc(&(to_iwch_qp(qp)->refcnt));
 926 }
 927
 928 void iwch_qp_rem_ref(struct ib_qp *qp)
 929 {
 930         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 931         if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
 932                 wake_up(&(to_iwch_qp(qp)->wait));
 933 }
 934
 935 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
 936 {
 937         PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
 938         return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
 939 }
 940
 941
 942 static int iwch_query_pkey(struct ib_device *ibdev,
 943                            u8 port, u16 index, u16 * pkey)
 944 {
 945         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 946         *pkey = 0;
 947         return 0;
 948 }
 949
 950 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
 951                           int index, union ib_gid *gid)
 952 {
 953         struct iwch_dev *dev;
 954
 955         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 956                __FUNCTION__, ibdev, port, index, gid);
 957         dev = to_iwch_dev(ibdev);
 958         BUG_ON(port == 0 || port > 2);
 959         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 960         memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
 961         return 0;
 962 }
 963
 964 static int iwch_query_device(struct ib_device *ibdev,
 965                              struct ib_device_attr *props)
 966 {
 967
 968         struct iwch_dev *dev;
 969         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 970
 971         dev = to_iwch_dev(ibdev);
 972         memset(props, 0, sizeof *props);
 973         memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
 974         props->device_cap_flags = dev->device_cap_flags;
 975         props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
 976         props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
 977         props->max_mr_size = ~0ull;
 978         props->max_qp = dev->attr.max_qps;
 979         props->max_qp_wr = dev->attr.max_wrs;
 980         props->max_sge = dev->attr.max_sge_per_wr;
 981         props->max_sge_rd = 1;
 982         props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
 983         props->max_cq = dev->attr.max_cqs;
 984         props->max_cqe = dev->attr.max_cqes_per_cq;
 985         props->max_mr = dev->attr.max_mem_regs;
 986         props->max_pd = dev->attr.max_pds;
 987         props->local_ca_ack_delay = 0;
 988
 989         return 0;
 990 }
 991
 992 static int iwch_query_port(struct ib_device *ibdev,
 993                            u8 port, struct ib_port_attr *props)
 994 {
 995         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 996         props->max_mtu = IB_MTU_4096;
 997         props->lid = 0;
 998         props->lmc = 0;
 999         props->sm_lid = 0;
1000         props->sm_sl = 0;
1001         props->state = IB_PORT_ACTIVE;
1002         props->phys_state = 0;
1003         props->port_cap_flags =
1004             IB_PORT_CM_SUP |
1005             IB_PORT_SNMP_TUNNEL_SUP |
1006             IB_PORT_REINIT_SUP |
1007             IB_PORT_DEVICE_MGMT_SUP |
1008             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1009         props->gid_tbl_len = 1;
1010         props->pkey_tbl_len = 1;
1011         props->qkey_viol_cntr = 0;
1012         props->active_width = 2;
1013         props->active_speed = 2;
1014         props->max_msg_sz = -1;
1015
1016         return 0;
1017 }
1018
1019 static ssize_t show_rev(struct class_device *cdev, char *buf)
1020 {
1021         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1022                                             ibdev.class_dev);
1023         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1024         return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1025 }
1026
1027 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1028 {
1029         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1030                                             ibdev.class_dev);
1031         struct ethtool_drvinfo info;
1032         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1033
1034         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1035         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1036         return sprintf(buf, "%s\n", info.fw_version);
1037 }
1038
1039 static ssize_t show_hca(struct class_device *cdev, char *buf)
1040 {
1041         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1042                                             ibdev.class_dev);
1043         struct ethtool_drvinfo info;
1044         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1045
1046         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1047         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1048         return sprintf(buf, "%s\n", info.driver);
1049 }
1050
1051 static ssize_t show_board(struct class_device *cdev, char *buf)
1052 {
1053         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1054                                             ibdev.class_dev);
1055         PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1056         return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1057                                        dev->rdev.rnic_info.pdev->device);
1058 }
1059
1060 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1061 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1062 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1063 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1064
1065 static struct class_device_attribute *iwch_class_attributes[] = {
1066         &class_device_attr_hw_rev,
1067         &class_device_attr_fw_ver,
1068         &class_device_attr_hca_type,
1069         &class_device_attr_board_id
1070 };
1071
1072 int iwch_register_device(struct iwch_dev *dev)
1073 {
1074         int ret;
1075         int i;
1076
1077         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1078         strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1079         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1080         memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1081         dev->ibdev.owner = THIS_MODULE;
1082         dev->device_cap_flags =
1083             (IB_DEVICE_ZERO_STAG |
1084              IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1085
1086         dev->ibdev.uverbs_cmd_mask =
1087             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1088             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1089             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1090             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1091             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1092             (1ull << IB_USER_VERBS_CMD_REG_MR) |
1093             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1094             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1095             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1096             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1097             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1098             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1099             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1100             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1101             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1102             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1103             (1ull << IB_USER_VERBS_CMD_POST_RECV);
1104         dev->ibdev.node_type = RDMA_NODE_RNIC;
1105         memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1106         dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1107         dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1108         dev->ibdev.class_dev.dev = &(dev->rdev.rnic_info.pdev->dev);
1109         dev->ibdev.query_device = iwch_query_device;
1110         dev->ibdev.query_port = iwch_query_port;
1111         dev->ibdev.modify_port = iwch_modify_port;
1112         dev->ibdev.query_pkey = iwch_query_pkey;
1113         dev->ibdev.query_gid = iwch_query_gid;
1114         dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1115         dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1116         dev->ibdev.mmap = iwch_mmap;
1117         dev->ibdev.alloc_pd = iwch_allocate_pd;
1118         dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1119         dev->ibdev.create_ah = iwch_ah_create;
1120         dev->ibdev.destroy_ah = iwch_ah_destroy;
1121         dev->ibdev.create_qp = iwch_create_qp;
1122         dev->ibdev.modify_qp = iwch_ib_modify_qp;
1123         dev->ibdev.destroy_qp = iwch_destroy_qp;
1124         dev->ibdev.create_cq = iwch_create_cq;
1125         dev->ibdev.destroy_cq = iwch_destroy_cq;
1126         dev->ibdev.resize_cq = iwch_resize_cq;
1127         dev->ibdev.poll_cq = iwch_poll_cq;
1128         dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1129         dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1130         dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1131         dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1132         dev->ibdev.dereg_mr = iwch_dereg_mr;
1133         dev->ibdev.alloc_mw = iwch_alloc_mw;
1134         dev->ibdev.bind_mw = iwch_bind_mw;
1135         dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1136
1137         dev->ibdev.attach_mcast = iwch_multicast_attach;
1138         dev->ibdev.detach_mcast = iwch_multicast_detach;
1139         dev->ibdev.process_mad = iwch_process_mad;
1140
1141         dev->ibdev.req_notify_cq = iwch_arm_cq;
1142         dev->ibdev.post_send = iwch_post_send;
1143         dev->ibdev.post_recv = iwch_post_receive;
1144
1145
1146         dev->ibdev.iwcm =
1147             (struct iw_cm_verbs *) kmalloc(sizeof(struct iw_cm_verbs),
1148                                            GFP_KERNEL);
1149         dev->ibdev.iwcm->connect = iwch_connect;
1150         dev->ibdev.iwcm->accept = iwch_accept_cr;
1151         dev->ibdev.iwcm->reject = iwch_reject_cr;
1152         dev->ibdev.iwcm->create_listen = iwch_create_listen;
1153         dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1154         dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1155         dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1156         dev->ibdev.iwcm->get_qp = iwch_get_qp;
1157
1158         ret = ib_register_device(&dev->ibdev);
1159         if (ret)
1160                 goto bail1;
1161
1162         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1163                 ret = class_device_create_file(&dev->ibdev.class_dev,
1164                                                iwch_class_attributes[i]);
1165                 if (ret) {
1166                         goto bail2;
1167                 }
1168         }
1169         return 0;
1170 bail2:
1171         ib_unregister_device(&dev->ibdev);
1172 bail1:
1173         return ret;
1174 }
1175
1176 void iwch_unregister_device(struct iwch_dev *dev)
1177 {
1178         int i;
1179
1180         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1181         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1182                 class_device_remove_file(&dev->ibdev.class_dev,
1183                                          iwch_class_attributes[i]);
1184         ib_unregister_device(&dev->ibdev);
1185         return;
1186 }