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 #include <linux/rtnetlink.h>
  43
  44 #include <asm/io.h>
  45 #include <asm/irq.h>
  46 #include <asm/byteorder.h>
  47
  48 #include <rdma/iw_cm.h>
  49 #include <rdma/ib_verbs.h>
  50 #include <rdma/ib_smi.h>
  51 #include <rdma/ib_umem.h>
  52 #include <rdma/ib_user_verbs.h>
  53
  54 #include "cxio_hal.h"
  55 #include "iwch.h"
  56 #include "iwch_provider.h"
  57 #include "iwch_cm.h"
  58 #include "iwch_user.h"
  59
  60 static int iwch_modify_port(struct ib_device *ibdev,
  61                             u8 port, int port_modify_mask,
  62                             struct ib_port_modify *props)
  63 {
  64         return -ENOSYS;
  65 }
  66
  67 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
  68                                     struct ib_ah_attr *ah_attr)
  69 {
  70         return ERR_PTR(-ENOSYS);
  71 }
  72
  73 static int iwch_ah_destroy(struct ib_ah *ah)
  74 {
  75         return -ENOSYS;
  76 }
  77
  78 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  79 {
  80         return -ENOSYS;
  81 }
  82
  83 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  84 {
  85         return -ENOSYS;
  86 }
  87
  88 static int iwch_process_mad(struct ib_device *ibdev,
  89                             int mad_flags,
  90                             u8 port_num,
  91                             struct ib_wc *in_wc,
  92                             struct ib_grh *in_grh,
  93                             struct ib_mad *in_mad, struct ib_mad *out_mad)
  94 {
  95         return -ENOSYS;
  96 }
  97
  98 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
  99 {
 100         struct iwch_dev *rhp = to_iwch_dev(context->device);
 101         struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
 102         struct iwch_mm_entry *mm, *tmp;
 103
 104         PDBG("%s context %p\n", __FUNCTION__, context);
 105         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
 106                 kfree(mm);
 107         cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
 108         kfree(ucontext);
 109         return 0;
 110 }
 111
 112 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
 113                                         struct ib_udata *udata)
 114 {
 115         struct iwch_ucontext *context;
 116         struct iwch_dev *rhp = to_iwch_dev(ibdev);
 117
 118         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 119         context = kzalloc(sizeof(*context), GFP_KERNEL);
 120         if (!context)
 121                 return ERR_PTR(-ENOMEM);
 122         cxio_init_ucontext(&rhp->rdev, &context->uctx);
 123         INIT_LIST_HEAD(&context->mmaps);
 124         spin_lock_init(&context->mmap_lock);
 125         return &context->ibucontext;
 126 }
 127
 128 static int iwch_destroy_cq(struct ib_cq *ib_cq)
 129 {
 130         struct iwch_cq *chp;
 131
 132         PDBG("%s ib_cq %p\n", __FUNCTION__, ib_cq);
 133         chp = to_iwch_cq(ib_cq);
 134
 135         remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
 136         atomic_dec(&chp->refcnt);
 137         wait_event(chp->wait, !atomic_read(&chp->refcnt));
 138
 139         cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
 140         kfree(chp);
 141         return 0;
 142 }
 143
 144 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
 145                              struct ib_ucontext *ib_context,
 146                              struct ib_udata *udata)
 147 {
 148         struct iwch_dev *rhp;
 149         struct iwch_cq *chp;
 150         struct iwch_create_cq_resp uresp;
 151         struct iwch_create_cq_req ureq;
 152         struct iwch_ucontext *ucontext = NULL;
 153
 154         PDBG("%s ib_dev %p entries %d\n", __FUNCTION__, ibdev, entries);
 155         rhp = to_iwch_dev(ibdev);
 156         chp = kzalloc(sizeof(*chp), GFP_KERNEL);
 157         if (!chp)
 158                 return ERR_PTR(-ENOMEM);
 159
 160         if (ib_context) {
 161                 ucontext = to_iwch_ucontext(ib_context);
 162                 if (!t3a_device(rhp)) {
 163                         if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
 164                                 kfree(chp);
 165                                 return ERR_PTR(-EFAULT);
 166                         }
 167                         chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
 168                 }
 169         }
 170
 171         if (t3a_device(rhp)) {
 172
 173                 /*
 174                  * T3A: Add some fluff to handle extra CQEs inserted
 175                  * for various errors.
 176                  * Additional CQE possibilities:
 177                  *      TERMINATE,
 178                  *      incoming RDMA WRITE Failures
 179                  *      incoming RDMA READ REQUEST FAILUREs
 180                  * NOTE: We cannot ensure the CQ won't overflow.
 181                  */
 182                 entries += 16;
 183         }
 184         entries = roundup_pow_of_two(entries);
 185         chp->cq.size_log2 = ilog2(entries);
 186
 187         if (cxio_create_cq(&rhp->rdev, &chp->cq)) {
 188                 kfree(chp);
 189                 return ERR_PTR(-ENOMEM);
 190         }
 191         chp->rhp = rhp;
 192         chp->ibcq.cqe = (1 << chp->cq.size_log2) - 1;
 193         spin_lock_init(&chp->lock);
 194         atomic_set(&chp->refcnt, 1);
 195         init_waitqueue_head(&chp->wait);
 196         insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
 197
 198         if (ucontext) {
 199                 struct iwch_mm_entry *mm;
 200
 201                 mm = kmalloc(sizeof *mm, GFP_KERNEL);
 202                 if (!mm) {
 203                         iwch_destroy_cq(&chp->ibcq);
 204                         return ERR_PTR(-ENOMEM);
 205                 }
 206                 uresp.cqid = chp->cq.cqid;
 207                 uresp.size_log2 = chp->cq.size_log2;
 208                 spin_lock(&ucontext->mmap_lock);
 209                 uresp.key = ucontext->key;
 210                 ucontext->key += PAGE_SIZE;
 211                 spin_unlock(&ucontext->mmap_lock);
 212                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 213                         kfree(mm);
 214                         iwch_destroy_cq(&chp->ibcq);
 215                         return ERR_PTR(-EFAULT);
 216                 }
 217                 mm->key = uresp.key;
 218                 mm->addr = virt_to_phys(chp->cq.queue);
 219                 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
 220                                              sizeof (struct t3_cqe));
 221                 insert_mmap(ucontext, mm);
 222         }
 223         PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
 224              chp->cq.cqid, chp, (1 << chp->cq.size_log2),
 225              (unsigned long long) chp->cq.dma_addr);
 226         return &chp->ibcq;
 227 }
 228
 229 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
 230 {
 231 #ifdef notyet
 232         struct iwch_cq *chp = to_iwch_cq(cq);
 233         struct t3_cq oldcq, newcq;
 234         int ret;
 235
 236         PDBG("%s ib_cq %p cqe %d\n", __FUNCTION__, cq, cqe);
 237
 238         /* We don't downsize... */
 239         if (cqe <= cq->cqe)
 240                 return 0;
 241
 242         /* create new t3_cq with new size */
 243         cqe = roundup_pow_of_two(cqe+1);
 244         newcq.size_log2 = ilog2(cqe);
 245
 246         /* Dont allow resize to less than the current wce count */
 247         if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
 248                 return -ENOMEM;
 249         }
 250
 251         /* Quiesce all QPs using this CQ */
 252         ret = iwch_quiesce_qps(chp);
 253         if (ret) {
 254                 return ret;
 255         }
 256
 257         ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
 258         if (ret) {
 259                 return ret;
 260         }
 261
 262         /* copy CQEs */
 263         memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
 264                                         sizeof(struct t3_cqe));
 265
 266         /* old iwch_qp gets new t3_cq but keeps old cqid */
 267         oldcq = chp->cq;
 268         chp->cq = newcq;
 269         chp->cq.cqid = oldcq.cqid;
 270
 271         /* resize new t3_cq to update the HW context */
 272         ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
 273         if (ret) {
 274                 chp->cq = oldcq;
 275                 return ret;
 276         }
 277         chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
 278
 279         /* destroy old t3_cq */
 280         oldcq.cqid = newcq.cqid;
 281         ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
 282         if (ret) {
 283                 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
 284                         __FUNCTION__, ret);
 285         }
 286
 287         /* add user hooks here */
 288
 289         /* resume qps */
 290         ret = iwch_resume_qps(chp);
 291         return ret;
 292 #else
 293         return -ENOSYS;
 294 #endif
 295 }
 296
 297 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
 298 {
 299         struct iwch_dev *rhp;
 300         struct iwch_cq *chp;
 301         enum t3_cq_opcode cq_op;
 302         int err;
 303         unsigned long flag;
 304         u32 rptr;
 305
 306         chp = to_iwch_cq(ibcq);
 307         rhp = chp->rhp;
 308         if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
 309                 cq_op = CQ_ARM_SE;
 310         else
 311                 cq_op = CQ_ARM_AN;
 312         if (chp->user_rptr_addr) {
 313                 if (get_user(rptr, chp->user_rptr_addr))
 314                         return -EFAULT;
 315                 spin_lock_irqsave(&chp->lock, flag);
 316                 chp->cq.rptr = rptr;
 317         } else
 318                 spin_lock_irqsave(&chp->lock, flag);
 319         PDBG("%s rptr 0x%x\n", __FUNCTION__, chp->cq.rptr);
 320         err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
 321         spin_unlock_irqrestore(&chp->lock, flag);
 322         if (err < 0)
 323                 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
 324                        chp->cq.cqid);
 325         if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
 326                 err = 0;
 327         return err;
 328 }
 329
 330 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 331 {
 332         int len = vma->vm_end - vma->vm_start;
 333         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 334         struct cxio_rdev *rdev_p;
 335         int ret = 0;
 336         struct iwch_mm_entry *mm;
 337         struct iwch_ucontext *ucontext;
 338         u64 addr;
 339
 340         PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __FUNCTION__, vma->vm_pgoff,
 341              key, len);
 342
 343         if (vma->vm_start & (PAGE_SIZE-1)) {
 344                 return -EINVAL;
 345         }
 346
 347         rdev_p = &(to_iwch_dev(context->device)->rdev);
 348         ucontext = to_iwch_ucontext(context);
 349
 350         mm = remove_mmap(ucontext, key, len);
 351         if (!mm)
 352                 return -EINVAL;
 353         addr = mm->addr;
 354         kfree(mm);
 355
 356         if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
 357             (addr < (rdev_p->rnic_info.udbell_physbase +
 358                        rdev_p->rnic_info.udbell_len))) {
 359
 360                 /*
 361                  * Map T3 DB register.
 362                  */
 363                 if (vma->vm_flags & VM_READ) {
 364                         return -EPERM;
 365                 }
 366
 367                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 368                 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
 369                 vma->vm_flags &= ~VM_MAYREAD;
 370                 ret = io_remap_pfn_range(vma, vma->vm_start,
 371                                          addr >> PAGE_SHIFT,
 372                                          len, vma->vm_page_prot);
 373         } else {
 374
 375                 /*
 376                  * Map WQ or CQ contig dma memory...
 377                  */
 378                 ret = remap_pfn_range(vma, vma->vm_start,
 379                                       addr >> PAGE_SHIFT,
 380                                       len, vma->vm_page_prot);
 381         }
 382
 383         return ret;
 384 }
 385
 386 static int iwch_deallocate_pd(struct ib_pd *pd)
 387 {
 388         struct iwch_dev *rhp;
 389         struct iwch_pd *php;
 390
 391         php = to_iwch_pd(pd);
 392         rhp = php->rhp;
 393         PDBG("%s ibpd %p pdid 0x%x\n", __FUNCTION__, pd, php->pdid);
 394         cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
 395         kfree(php);
 396         return 0;
 397 }
 398
 399 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
 400                                struct ib_ucontext *context,
 401                                struct ib_udata *udata)
 402 {
 403         struct iwch_pd *php;
 404         u32 pdid;
 405         struct iwch_dev *rhp;
 406
 407         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 408         rhp = (struct iwch_dev *) ibdev;
 409         pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
 410         if (!pdid)
 411                 return ERR_PTR(-EINVAL);
 412         php = kzalloc(sizeof(*php), GFP_KERNEL);
 413         if (!php) {
 414                 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
 415                 return ERR_PTR(-ENOMEM);
 416         }
 417         php->pdid = pdid;
 418         php->rhp = rhp;
 419         if (context) {
 420                 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
 421                         iwch_deallocate_pd(&php->ibpd);
 422                         return ERR_PTR(-EFAULT);
 423                 }
 424         }
 425         PDBG("%s pdid 0x%0x ptr 0x%p\n", __FUNCTION__, pdid, php);
 426         return &php->ibpd;
 427 }
 428
 429 static int iwch_dereg_mr(struct ib_mr *ib_mr)
 430 {
 431         struct iwch_dev *rhp;
 432         struct iwch_mr *mhp;
 433         u32 mmid;
 434
 435         PDBG("%s ib_mr %p\n", __FUNCTION__, ib_mr);
 436         /* There can be no memory windows */
 437         if (atomic_read(&ib_mr->usecnt))
 438                 return -EINVAL;
 439
 440         mhp = to_iwch_mr(ib_mr);
 441         rhp = mhp->rhp;
 442         mmid = mhp->attr.stag >> 8;
 443         cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
 444                        mhp->attr.pbl_addr);
 445         remove_handle(rhp, &rhp->mmidr, mmid);
 446         if (mhp->kva)
 447                 kfree((void *) (unsigned long) mhp->kva);
 448         if (mhp->umem)
 449                 ib_umem_release(mhp->umem);
 450         PDBG("%s mmid 0x%x ptr %p\n", __FUNCTION__, mmid, mhp);
 451         kfree(mhp);
 452         return 0;
 453 }
 454
 455 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
 456                                         struct ib_phys_buf *buffer_list,
 457                                         int num_phys_buf,
 458                                         int acc,
 459                                         u64 *iova_start)
 460 {
 461         __be64 *page_list;
 462         int shift;
 463         u64 total_size;
 464         int npages;
 465         struct iwch_dev *rhp;
 466         struct iwch_pd *php;
 467         struct iwch_mr *mhp;
 468         int ret;
 469
 470         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 471         php = to_iwch_pd(pd);
 472         rhp = php->rhp;
 473
 474         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 475         if (!mhp)
 476                 return ERR_PTR(-ENOMEM);
 477
 478         /* First check that we have enough alignment */
 479         if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
 480                 ret = -EINVAL;
 481                 goto err;
 482         }
 483
 484         if (num_phys_buf > 1 &&
 485             ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
 486                 ret = -EINVAL;
 487                 goto err;
 488         }
 489
 490         ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
 491                                    &total_size, &npages, &shift, &page_list);
 492         if (ret)
 493                 goto err;
 494
 495         mhp->rhp = rhp;
 496         mhp->attr.pdid = php->pdid;
 497         mhp->attr.zbva = 0;
 498
 499         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 500         mhp->attr.va_fbo = *iova_start;
 501         mhp->attr.page_size = shift - 12;
 502
 503         mhp->attr.len = (u32) total_size;
 504         mhp->attr.pbl_size = npages;
 505         ret = iwch_register_mem(rhp, php, mhp, shift, page_list);
 506         kfree(page_list);
 507         if (ret) {
 508                 goto err;
 509         }
 510         return &mhp->ibmr;
 511 err:
 512         kfree(mhp);
 513         return ERR_PTR(ret);
 514
 515 }
 516
 517 static int iwch_reregister_phys_mem(struct ib_mr *mr,
 518                                      int mr_rereg_mask,
 519                                      struct ib_pd *pd,
 520                                      struct ib_phys_buf *buffer_list,
 521                                      int num_phys_buf,
 522                                      int acc, u64 * iova_start)
 523 {
 524
 525         struct iwch_mr mh, *mhp;
 526         struct iwch_pd *php;
 527         struct iwch_dev *rhp;
 528         __be64 *page_list = NULL;
 529         int shift = 0;
 530         u64 total_size;
 531         int npages;
 532         int ret;
 533
 534         PDBG("%s ib_mr %p ib_pd %p\n", __FUNCTION__, mr, pd);
 535
 536         /* There can be no memory windows */
 537         if (atomic_read(&mr->usecnt))
 538                 return -EINVAL;
 539
 540         mhp = to_iwch_mr(mr);
 541         rhp = mhp->rhp;
 542         php = to_iwch_pd(mr->pd);
 543
 544         /* make sure we are on the same adapter */
 545         if (rhp != php->rhp)
 546                 return -EINVAL;
 547
 548         memcpy(&mh, mhp, sizeof *mhp);
 549
 550         if (mr_rereg_mask & IB_MR_REREG_PD)
 551                 php = to_iwch_pd(pd);
 552         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 553                 mh.attr.perms = iwch_ib_to_tpt_access(acc);
 554         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
 555                 ret = build_phys_page_list(buffer_list, num_phys_buf,
 556                                            iova_start,
 557                                            &total_size, &npages,
 558                                            &shift, &page_list);
 559                 if (ret)
 560                         return ret;
 561         }
 562
 563         ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
 564         kfree(page_list);
 565         if (ret) {
 566                 return ret;
 567         }
 568         if (mr_rereg_mask & IB_MR_REREG_PD)
 569                 mhp->attr.pdid = php->pdid;
 570         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 571                 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 572         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
 573                 mhp->attr.zbva = 0;
 574                 mhp->attr.va_fbo = *iova_start;
 575                 mhp->attr.page_size = shift - 12;
 576                 mhp->attr.len = (u32) total_size;
 577                 mhp->attr.pbl_size = npages;
 578         }
 579
 580         return 0;
 581 }
 582
 583
 584 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 585                                       u64 virt, int acc, struct ib_udata *udata)
 586 {
 587         __be64 *pages;
 588         int shift, n, len;
 589         int i, j, k;
 590         int err = 0;
 591         struct ib_umem_chunk *chunk;
 592         struct iwch_dev *rhp;
 593         struct iwch_pd *php;
 594         struct iwch_mr *mhp;
 595         struct iwch_reg_user_mr_resp uresp;
 596
 597         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 598
 599         php = to_iwch_pd(pd);
 600         rhp = php->rhp;
 601         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 602         if (!mhp)
 603                 return ERR_PTR(-ENOMEM);
 604
 605         mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc);
 606         if (IS_ERR(mhp->umem)) {
 607                 err = PTR_ERR(mhp->umem);
 608                 kfree(mhp);
 609                 return ERR_PTR(err);
 610         }
 611
 612         shift = ffs(mhp->umem->page_size) - 1;
 613
 614         n = 0;
 615         list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
 616                 n += chunk->nents;
 617
 618         pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
 619         if (!pages) {
 620                 err = -ENOMEM;
 621                 goto err;
 622         }
 623
 624         i = n = 0;
 625
 626         list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
 627                 for (j = 0; j < chunk->nmap; ++j) {
 628                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
 629                         for (k = 0; k < len; ++k) {
 630                                 pages[i++] = cpu_to_be64(sg_dma_address(
 631                                         &chunk->page_list[j]) +
 632                                         mhp->umem->page_size * k);
 633                         }
 634                 }
 635
 636         mhp->rhp = rhp;
 637         mhp->attr.pdid = php->pdid;
 638         mhp->attr.zbva = 0;
 639         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 640         mhp->attr.va_fbo = virt;
 641         mhp->attr.page_size = shift - 12;
 642         mhp->attr.len = (u32) length;
 643         mhp->attr.pbl_size = i;
 644         err = iwch_register_mem(rhp, php, mhp, shift, pages);
 645         kfree(pages);
 646         if (err)
 647                 goto err;
 648
 649         if (udata && !t3a_device(rhp)) {
 650                 uresp.pbl_addr = (mhp->attr.pbl_addr -
 651                                  rhp->rdev.rnic_info.pbl_base) >> 3;
 652                 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
 653                      uresp.pbl_addr);
 654
 655                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 656                         iwch_dereg_mr(&mhp->ibmr);
 657                         err = -EFAULT;
 658                         goto err;
 659                 }
 660         }
 661
 662         return &mhp->ibmr;
 663
 664 err:
 665         ib_umem_release(mhp->umem);
 666         kfree(mhp);
 667         return ERR_PTR(err);
 668 }
 669
 670 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
 671 {
 672         struct ib_phys_buf bl;
 673         u64 kva;
 674         struct ib_mr *ibmr;
 675
 676         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 677
 678         /*
 679          * T3 only supports 32 bits of size.
 680          */
 681         bl.size = 0xffffffff;
 682         bl.addr = 0;
 683         kva = 0;
 684         ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
 685         return ibmr;
 686 }
 687
 688 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
 689 {
 690         struct iwch_dev *rhp;
 691         struct iwch_pd *php;
 692         struct iwch_mw *mhp;
 693         u32 mmid;
 694         u32 stag = 0;
 695         int ret;
 696
 697         php = to_iwch_pd(pd);
 698         rhp = php->rhp;
 699         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 700         if (!mhp)
 701                 return ERR_PTR(-ENOMEM);
 702         ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
 703         if (ret) {
 704                 kfree(mhp);
 705                 return ERR_PTR(ret);
 706         }
 707         mhp->rhp = rhp;
 708         mhp->attr.pdid = php->pdid;
 709         mhp->attr.type = TPT_MW;
 710         mhp->attr.stag = stag;
 711         mmid = (stag) >> 8;
 712         insert_handle(rhp, &rhp->mmidr, mhp, mmid);
 713         PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
 714         return &(mhp->ibmw);
 715 }
 716
 717 static int iwch_dealloc_mw(struct ib_mw *mw)
 718 {
 719         struct iwch_dev *rhp;
 720         struct iwch_mw *mhp;
 721         u32 mmid;
 722
 723         mhp = to_iwch_mw(mw);
 724         rhp = mhp->rhp;
 725         mmid = (mw->rkey) >> 8;
 726         cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
 727         remove_handle(rhp, &rhp->mmidr, mmid);
 728         kfree(mhp);
 729         PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
 730         return 0;
 731 }
 732
 733 static int iwch_destroy_qp(struct ib_qp *ib_qp)
 734 {
 735         struct iwch_dev *rhp;
 736         struct iwch_qp *qhp;
 737         struct iwch_qp_attributes attrs;
 738         struct iwch_ucontext *ucontext;
 739
 740         qhp = to_iwch_qp(ib_qp);
 741         rhp = qhp->rhp;
 742
 743         attrs.next_state = IWCH_QP_STATE_ERROR;
 744         iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
 745         wait_event(qhp->wait, !qhp->ep);
 746
 747         remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
 748
 749         atomic_dec(&qhp->refcnt);
 750         wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
 751
 752         ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
 753                                   : NULL;
 754         cxio_destroy_qp(&rhp->rdev, &qhp->wq,
 755                         ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
 756
 757         PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __FUNCTION__,
 758              ib_qp, qhp->wq.qpid, qhp);
 759         kfree(qhp);
 760         return 0;
 761 }
 762
 763 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
 764                              struct ib_qp_init_attr *attrs,
 765                              struct ib_udata *udata)
 766 {
 767         struct iwch_dev *rhp;
 768         struct iwch_qp *qhp;
 769         struct iwch_pd *php;
 770         struct iwch_cq *schp;
 771         struct iwch_cq *rchp;
 772         struct iwch_create_qp_resp uresp;
 773         int wqsize, sqsize, rqsize;
 774         struct iwch_ucontext *ucontext;
 775
 776         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 777         if (attrs->qp_type != IB_QPT_RC)
 778                 return ERR_PTR(-EINVAL);
 779         php = to_iwch_pd(pd);
 780         rhp = php->rhp;
 781         schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
 782         rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
 783         if (!schp || !rchp)
 784                 return ERR_PTR(-EINVAL);
 785
 786         /* The RQT size must be # of entries + 1 rounded up to a power of two */
 787         rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
 788         if (rqsize == attrs->cap.max_recv_wr)
 789                 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
 790
 791         /* T3 doesn't support RQT depth < 16 */
 792         if (rqsize < 16)
 793                 rqsize = 16;
 794
 795         if (rqsize > T3_MAX_RQ_SIZE)
 796                 return ERR_PTR(-EINVAL);
 797
 798         if (attrs->cap.max_inline_data > T3_MAX_INLINE)
 799                 return ERR_PTR(-EINVAL);
 800
 801         /*
 802          * NOTE: The SQ and total WQ sizes don't need to be
 803          * a power of two.  However, all the code assumes
 804          * they are. EG: Q_FREECNT() and friends.
 805          */
 806         sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
 807         wqsize = roundup_pow_of_two(rqsize + sqsize);
 808         PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
 809              wqsize, sqsize, rqsize);
 810         qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
 811         if (!qhp)
 812                 return ERR_PTR(-ENOMEM);
 813         qhp->wq.size_log2 = ilog2(wqsize);
 814         qhp->wq.rq_size_log2 = ilog2(rqsize);
 815         qhp->wq.sq_size_log2 = ilog2(sqsize);
 816         ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
 817         if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
 818                            ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
 819                 kfree(qhp);
 820                 return ERR_PTR(-ENOMEM);
 821         }
 822         attrs->cap.max_recv_wr = rqsize - 1;
 823         attrs->cap.max_send_wr = sqsize;
 824         qhp->rhp = rhp;
 825         qhp->attr.pd = php->pdid;
 826         qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
 827         qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
 828         qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
 829         qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
 830         qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
 831         qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
 832         qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
 833         qhp->attr.state = IWCH_QP_STATE_IDLE;
 834         qhp->attr.next_state = IWCH_QP_STATE_IDLE;
 835
 836         /*
 837          * XXX - These don't get passed in from the openib user
 838          * at create time.  The CM sets them via a QP modify.
 839          * Need to fix...  I think the CM should
 840          */
 841         qhp->attr.enable_rdma_read = 1;
 842         qhp->attr.enable_rdma_write = 1;
 843         qhp->attr.enable_bind = 1;
 844         qhp->attr.max_ord = 1;
 845         qhp->attr.max_ird = 1;
 846
 847         spin_lock_init(&qhp->lock);
 848         init_waitqueue_head(&qhp->wait);
 849         atomic_set(&qhp->refcnt, 1);
 850         insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
 851
 852         if (udata) {
 853
 854                 struct iwch_mm_entry *mm1, *mm2;
 855
 856                 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
 857                 if (!mm1) {
 858                         iwch_destroy_qp(&qhp->ibqp);
 859                         return ERR_PTR(-ENOMEM);
 860                 }
 861
 862                 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
 863                 if (!mm2) {
 864                         kfree(mm1);
 865                         iwch_destroy_qp(&qhp->ibqp);
 866                         return ERR_PTR(-ENOMEM);
 867                 }
 868
 869                 uresp.qpid = qhp->wq.qpid;
 870                 uresp.size_log2 = qhp->wq.size_log2;
 871                 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
 872                 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
 873                 spin_lock(&ucontext->mmap_lock);
 874                 uresp.key = ucontext->key;
 875                 ucontext->key += PAGE_SIZE;
 876                 uresp.db_key = ucontext->key;
 877                 ucontext->key += PAGE_SIZE;
 878                 spin_unlock(&ucontext->mmap_lock);
 879                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 880                         kfree(mm1);
 881                         kfree(mm2);
 882                         iwch_destroy_qp(&qhp->ibqp);
 883                         return ERR_PTR(-EFAULT);
 884                 }
 885                 mm1->key = uresp.key;
 886                 mm1->addr = virt_to_phys(qhp->wq.queue);
 887                 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
 888                 insert_mmap(ucontext, mm1);
 889                 mm2->key = uresp.db_key;
 890                 mm2->addr = qhp->wq.udb & PAGE_MASK;
 891                 mm2->len = PAGE_SIZE;
 892                 insert_mmap(ucontext, mm2);
 893         }
 894         qhp->ibqp.qp_num = qhp->wq.qpid;
 895         init_timer(&(qhp->timer));
 896         PDBG("%s sq_num_entries %d, rq_num_entries %d "
 897              "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
 898              __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
 899              qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
 900              1 << qhp->wq.size_log2);
 901         return &qhp->ibqp;
 902 }
 903
 904 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 905                       int attr_mask, struct ib_udata *udata)
 906 {
 907         struct iwch_dev *rhp;
 908         struct iwch_qp *qhp;
 909         enum iwch_qp_attr_mask mask = 0;
 910         struct iwch_qp_attributes attrs;
 911
 912         PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
 913
 914         /* iwarp does not support the RTR state */
 915         if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
 916                 attr_mask &= ~IB_QP_STATE;
 917
 918         /* Make sure we still have something left to do */
 919         if (!attr_mask)
 920                 return 0;
 921
 922         memset(&attrs, 0, sizeof attrs);
 923         qhp = to_iwch_qp(ibqp);
 924         rhp = qhp->rhp;
 925
 926         attrs.next_state = iwch_convert_state(attr->qp_state);
 927         attrs.enable_rdma_read = (attr->qp_access_flags &
 928                                IB_ACCESS_REMOTE_READ) ?  1 : 0;
 929         attrs.enable_rdma_write = (attr->qp_access_flags &
 930                                 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
 931         attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
 932
 933
 934         mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
 935         mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
 936                         (IWCH_QP_ATTR_ENABLE_RDMA_READ |
 937                          IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
 938                          IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
 939
 940         return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
 941 }
 942
 943 void iwch_qp_add_ref(struct ib_qp *qp)
 944 {
 945         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 946         atomic_inc(&(to_iwch_qp(qp)->refcnt));
 947 }
 948
 949 void iwch_qp_rem_ref(struct ib_qp *qp)
 950 {
 951         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 952         if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
 953                 wake_up(&(to_iwch_qp(qp)->wait));
 954 }
 955
 956 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
 957 {
 958         PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
 959         return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
 960 }
 961
 962
 963 static int iwch_query_pkey(struct ib_device *ibdev,
 964                            u8 port, u16 index, u16 * pkey)
 965 {
 966         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 967         *pkey = 0;
 968         return 0;
 969 }
 970
 971 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
 972                           int index, union ib_gid *gid)
 973 {
 974         struct iwch_dev *dev;
 975
 976         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 977                __FUNCTION__, ibdev, port, index, gid);
 978         dev = to_iwch_dev(ibdev);
 979         BUG_ON(port == 0 || port > 2);
 980         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 981         memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
 982         return 0;
 983 }
 984
 985 static int iwch_query_device(struct ib_device *ibdev,
 986                              struct ib_device_attr *props)
 987 {
 988
 989         struct iwch_dev *dev;
 990         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 991
 992         dev = to_iwch_dev(ibdev);
 993         memset(props, 0, sizeof *props);
 994         memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
 995         props->device_cap_flags = dev->device_cap_flags;
 996         props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
 997         props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
 998         props->max_mr_size = ~0ull;
 999         props->max_qp = dev->attr.max_qps;
1000         props->max_qp_wr = dev->attr.max_wrs;
1001         props->max_sge = dev->attr.max_sge_per_wr;
1002         props->max_sge_rd = 1;
1003         props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1004         props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1005         props->max_cq = dev->attr.max_cqs;
1006         props->max_cqe = dev->attr.max_cqes_per_cq;
1007         props->max_mr = dev->attr.max_mem_regs;
1008         props->max_pd = dev->attr.max_pds;
1009         props->local_ca_ack_delay = 0;
1010
1011         return 0;
1012 }
1013
1014 static int iwch_query_port(struct ib_device *ibdev,
1015                            u8 port, struct ib_port_attr *props)
1016 {
1017         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
1018         props->max_mtu = IB_MTU_4096;
1019         props->lid = 0;
1020         props->lmc = 0;
1021         props->sm_lid = 0;
1022         props->sm_sl = 0;
1023         props->state = IB_PORT_ACTIVE;
1024         props->phys_state = 0;
1025         props->port_cap_flags =
1026             IB_PORT_CM_SUP |
1027             IB_PORT_SNMP_TUNNEL_SUP |
1028             IB_PORT_REINIT_SUP |
1029             IB_PORT_DEVICE_MGMT_SUP |
1030             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1031         props->gid_tbl_len = 1;
1032         props->pkey_tbl_len = 1;
1033         props->qkey_viol_cntr = 0;
1034         props->active_width = 2;
1035         props->active_speed = 2;
1036         props->max_msg_sz = -1;
1037
1038         return 0;
1039 }
1040
1041 static ssize_t show_rev(struct class_device *cdev, char *buf)
1042 {
1043         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1044                                             ibdev.class_dev);
1045         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1046         return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1047 }
1048
1049 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1050 {
1051         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1052                                             ibdev.class_dev);
1053         struct ethtool_drvinfo info;
1054         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1055
1056         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1057         rtnl_lock();
1058         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1059         rtnl_unlock();
1060         return sprintf(buf, "%s\n", info.fw_version);
1061 }
1062
1063 static ssize_t show_hca(struct class_device *cdev, char *buf)
1064 {
1065         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1066                                             ibdev.class_dev);
1067         struct ethtool_drvinfo info;
1068         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1069
1070         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1071         rtnl_lock();
1072         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1073         rtnl_unlock();
1074         return sprintf(buf, "%s\n", info.driver);
1075 }
1076
1077 static ssize_t show_board(struct class_device *cdev, char *buf)
1078 {
1079         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1080                                             ibdev.class_dev);
1081         PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1082         return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1083                                        dev->rdev.rnic_info.pdev->device);
1084 }
1085
1086 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1087 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1088 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1089 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1090
1091 static struct class_device_attribute *iwch_class_attributes[] = {
1092         &class_device_attr_hw_rev,
1093         &class_device_attr_fw_ver,
1094         &class_device_attr_hca_type,
1095         &class_device_attr_board_id
1096 };
1097
1098 int iwch_register_device(struct iwch_dev *dev)
1099 {
1100         int ret;
1101         int i;
1102
1103         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1104         strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1105         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1106         memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1107         dev->ibdev.owner = THIS_MODULE;
1108         dev->device_cap_flags =
1109             (IB_DEVICE_ZERO_STAG |
1110              IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1111
1112         dev->ibdev.uverbs_cmd_mask =
1113             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1114             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1115             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1116             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1117             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1118             (1ull << IB_USER_VERBS_CMD_REG_MR) |
1119             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1120             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1121             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1122             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1123             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1124             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1125             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1126             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1127             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1128             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1129             (1ull << IB_USER_VERBS_CMD_POST_RECV);
1130         dev->ibdev.node_type = RDMA_NODE_RNIC;
1131         memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1132         dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1133         dev->ibdev.num_comp_vectors = 1;
1134         dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1135         dev->ibdev.query_device = iwch_query_device;
1136         dev->ibdev.query_port = iwch_query_port;
1137         dev->ibdev.modify_port = iwch_modify_port;
1138         dev->ibdev.query_pkey = iwch_query_pkey;
1139         dev->ibdev.query_gid = iwch_query_gid;
1140         dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1141         dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1142         dev->ibdev.mmap = iwch_mmap;
1143         dev->ibdev.alloc_pd = iwch_allocate_pd;
1144         dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1145         dev->ibdev.create_ah = iwch_ah_create;
1146         dev->ibdev.destroy_ah = iwch_ah_destroy;
1147         dev->ibdev.create_qp = iwch_create_qp;
1148         dev->ibdev.modify_qp = iwch_ib_modify_qp;
1149         dev->ibdev.destroy_qp = iwch_destroy_qp;
1150         dev->ibdev.create_cq = iwch_create_cq;
1151         dev->ibdev.destroy_cq = iwch_destroy_cq;
1152         dev->ibdev.resize_cq = iwch_resize_cq;
1153         dev->ibdev.poll_cq = iwch_poll_cq;
1154         dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1155         dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1156         dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1157         dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1158         dev->ibdev.dereg_mr = iwch_dereg_mr;
1159         dev->ibdev.alloc_mw = iwch_alloc_mw;
1160         dev->ibdev.bind_mw = iwch_bind_mw;
1161         dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1162
1163         dev->ibdev.attach_mcast = iwch_multicast_attach;
1164         dev->ibdev.detach_mcast = iwch_multicast_detach;
1165         dev->ibdev.process_mad = iwch_process_mad;
1166
1167         dev->ibdev.req_notify_cq = iwch_arm_cq;
1168         dev->ibdev.post_send = iwch_post_send;
1169         dev->ibdev.post_recv = iwch_post_receive;
1170
1171
1172         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1173         if (!dev->ibdev.iwcm)
1174                 return -ENOMEM;
1175
1176         dev->ibdev.iwcm->connect = iwch_connect;
1177         dev->ibdev.iwcm->accept = iwch_accept_cr;
1178         dev->ibdev.iwcm->reject = iwch_reject_cr;
1179         dev->ibdev.iwcm->create_listen = iwch_create_listen;
1180         dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1181         dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1182         dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1183         dev->ibdev.iwcm->get_qp = iwch_get_qp;
1184
1185         ret = ib_register_device(&dev->ibdev);
1186         if (ret)
1187                 goto bail1;
1188
1189         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1190                 ret = class_device_create_file(&dev->ibdev.class_dev,
1191                                                iwch_class_attributes[i]);
1192                 if (ret) {
1193                         goto bail2;
1194                 }
1195         }
1196         return 0;
1197 bail2:
1198         ib_unregister_device(&dev->ibdev);
1199 bail1:
1200         return ret;
1201 }
1202
1203 void iwch_unregister_device(struct iwch_dev *dev)
1204 {
1205         int i;
1206
1207         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1208         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1209                 class_device_remove_file(&dev->ibdev.class_dev,
1210                                          iwch_class_attributes[i]);
1211         ib_unregister_device(&dev->ibdev);
1212         return;
1213 }