drivers/infiniband/hw/cxgb3/iwch_provider.c

   1 /*
   2  * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
   3  * Copyright (c) 2006 Open Grid Computing, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33 #include <linux/module.h>
  34 #include <linux/moduleparam.h>
  35 #include <linux/device.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/delay.h>
  39 #include <linux/errno.h>
  40 #include <linux/list.h>
  41 #include <linux/spinlock.h>
  42 #include <linux/ethtool.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_user_verbs.h>
  52
  53 #include "cxio_hal.h"
  54 #include "iwch.h"
  55 #include "iwch_provider.h"
  56 #include "iwch_cm.h"
  57 #include "iwch_user.h"
  58
  59 static int iwch_modify_port(struct ib_device *ibdev,
  60                             u8 port, int port_modify_mask,
  61                             struct ib_port_modify *props)
  62 {
  63         return -ENOSYS;
  64 }
  65
  66 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
  67                                     struct ib_ah_attr *ah_attr)
  68 {
  69         return ERR_PTR(-ENOSYS);
  70 }
  71
  72 static int iwch_ah_destroy(struct ib_ah *ah)
  73 {
  74         return -ENOSYS;
  75 }
  76
  77 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  78 {
  79         return -ENOSYS;
  80 }
  81
  82 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  83 {
  84         return -ENOSYS;
  85 }
  86
  87 static int iwch_process_mad(struct ib_device *ibdev,
  88                             int mad_flags,
  89                             u8 port_num,
  90                             struct ib_wc *in_wc,
  91                             struct ib_grh *in_grh,
  92                             struct ib_mad *in_mad, struct ib_mad *out_mad)
  93 {
  94         return -ENOSYS;
  95 }
  96
  97 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
  98 {
  99         struct iwch_dev *rhp = to_iwch_dev(context->device);
 100         struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
 101         struct iwch_mm_entry *mm, *tmp;
 102
 103         PDBG("%s context %p\n", __FUNCTION__, context);
 104         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
 105                 kfree(mm);
 106         cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
 107         kfree(ucontext);
 108         return 0;
 109 }
 110
 111 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
 112                                         struct ib_udata *udata)
 113 {
 114         struct iwch_ucontext *context;
 115         struct iwch_dev *rhp = to_iwch_dev(ibdev);
 116
 117         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 118         context = kzalloc(sizeof(*context), GFP_KERNEL);
 119         if (!context)
 120                 return ERR_PTR(-ENOMEM);
 121         cxio_init_ucontext(&rhp->rdev, &context->uctx);
 122         INIT_LIST_HEAD(&context->mmaps);
 123         spin_lock_init(&context->mmap_lock);
 124         return &context->ibucontext;
 125 }
 126
 127 static int iwch_destroy_cq(struct ib_cq *ib_cq)
 128 {
 129         struct iwch_cq *chp;
 130
 131         PDBG("%s ib_cq %p\n", __FUNCTION__, ib_cq);
 132         chp = to_iwch_cq(ib_cq);
 133
 134         remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
 135         atomic_dec(&chp->refcnt);
 136         wait_event(chp->wait, !atomic_read(&chp->refcnt));
 137
 138         cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
 139         kfree(chp);
 140         return 0;
 141 }
 142
 143 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries,
 144                              struct ib_ucontext *ib_context,
 145                              struct ib_udata *udata)
 146 {
 147         struct iwch_dev *rhp;
 148         struct iwch_cq *chp;
 149         struct iwch_create_cq_resp uresp;
 150         struct iwch_create_cq_req ureq;
 151         struct iwch_ucontext *ucontext = NULL;
 152
 153         PDBG("%s ib_dev %p entries %d\n", __FUNCTION__, ibdev, entries);
 154         rhp = to_iwch_dev(ibdev);
 155         chp = kzalloc(sizeof(*chp), GFP_KERNEL);
 156         if (!chp)
 157                 return ERR_PTR(-ENOMEM);
 158
 159         if (ib_context) {
 160                 ucontext = to_iwch_ucontext(ib_context);
 161                 if (!t3a_device(rhp)) {
 162                         if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
 163                                 kfree(chp);
 164                                 return ERR_PTR(-EFAULT);
 165                         }
 166                         chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
 167                 }
 168         }
 169
 170         if (t3a_device(rhp)) {
 171
 172                 /*
 173                  * T3A: Add some fluff to handle extra CQEs inserted
 174                  * for various errors.
 175                  * Additional CQE possibilities:
 176                  *      TERMINATE,
 177                  *      incoming RDMA WRITE Failures
 178                  *      incoming RDMA READ REQUEST FAILUREs
 179                  * NOTE: We cannot ensure the CQ won't overflow.
 180                  */
 181                 entries += 16;
 182         }
 183         entries = roundup_pow_of_two(entries);
 184         chp->cq.size_log2 = ilog2(entries);
 185
 186         if (cxio_create_cq(&rhp->rdev, &chp->cq)) {
 187                 kfree(chp);
 188                 return ERR_PTR(-ENOMEM);
 189         }
 190         chp->rhp = rhp;
 191         chp->ibcq.cqe = (1 << chp->cq.size_log2) - 1;
 192         spin_lock_init(&chp->lock);
 193         atomic_set(&chp->refcnt, 1);
 194         init_waitqueue_head(&chp->wait);
 195         insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
 196
 197         if (ucontext) {
 198                 struct iwch_mm_entry *mm;
 199
 200                 mm = kmalloc(sizeof *mm, GFP_KERNEL);
 201                 if (!mm) {
 202                         iwch_destroy_cq(&chp->ibcq);
 203                         return ERR_PTR(-ENOMEM);
 204                 }
 205                 uresp.cqid = chp->cq.cqid;
 206                 uresp.size_log2 = chp->cq.size_log2;
 207                 spin_lock(&ucontext->mmap_lock);
 208                 uresp.key = ucontext->key;
 209                 ucontext->key += PAGE_SIZE;
 210                 spin_unlock(&ucontext->mmap_lock);
 211                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 212                         kfree(mm);
 213                         iwch_destroy_cq(&chp->ibcq);
 214                         return ERR_PTR(-EFAULT);
 215                 }
 216                 mm->key = uresp.key;
 217                 mm->addr = virt_to_phys(chp->cq.queue);
 218                 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
 219                                              sizeof (struct t3_cqe));
 220                 insert_mmap(ucontext, mm);
 221         }
 222         PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
 223              chp->cq.cqid, chp, (1 << chp->cq.size_log2),
 224              (unsigned long long) chp->cq.dma_addr);
 225         return &chp->ibcq;
 226 }
 227
 228 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
 229 {
 230 #ifdef notyet
 231         struct iwch_cq *chp = to_iwch_cq(cq);
 232         struct t3_cq oldcq, newcq;
 233         int ret;
 234
 235         PDBG("%s ib_cq %p cqe %d\n", __FUNCTION__, cq, cqe);
 236
 237         /* We don't downsize... */
 238         if (cqe <= cq->cqe)
 239                 return 0;
 240
 241         /* create new t3_cq with new size */
 242         cqe = roundup_pow_of_two(cqe+1);
 243         newcq.size_log2 = ilog2(cqe);
 244
 245         /* Dont allow resize to less than the current wce count */
 246         if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
 247                 return -ENOMEM;
 248         }
 249
 250         /* Quiesce all QPs using this CQ */
 251         ret = iwch_quiesce_qps(chp);
 252         if (ret) {
 253                 return ret;
 254         }
 255
 256         ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
 257         if (ret) {
 258                 return ret;
 259         }
 260
 261         /* copy CQEs */
 262         memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
 263                                         sizeof(struct t3_cqe));
 264
 265         /* old iwch_qp gets new t3_cq but keeps old cqid */
 266         oldcq = chp->cq;
 267         chp->cq = newcq;
 268         chp->cq.cqid = oldcq.cqid;
 269
 270         /* resize new t3_cq to update the HW context */
 271         ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
 272         if (ret) {
 273                 chp->cq = oldcq;
 274                 return ret;
 275         }
 276         chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
 277
 278         /* destroy old t3_cq */
 279         oldcq.cqid = newcq.cqid;
 280         ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
 281         if (ret) {
 282                 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
 283                         __FUNCTION__, ret);
 284         }
 285
 286         /* add user hooks here */
 287
 288         /* resume qps */
 289         ret = iwch_resume_qps(chp);
 290         return ret;
 291 #else
 292         return -ENOSYS;
 293 #endif
 294 }
 295
 296 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify notify)
 297 {
 298         struct iwch_dev *rhp;
 299         struct iwch_cq *chp;
 300         enum t3_cq_opcode cq_op;
 301         int err;
 302         unsigned long flag;
 303         u32 rptr;
 304
 305         chp = to_iwch_cq(ibcq);
 306         rhp = chp->rhp;
 307         if (notify == IB_CQ_SOLICITED)
 308                 cq_op = CQ_ARM_SE;
 309         else
 310                 cq_op = CQ_ARM_AN;
 311         if (chp->user_rptr_addr) {
 312                 if (get_user(rptr, chp->user_rptr_addr))
 313                         return -EFAULT;
 314                 spin_lock_irqsave(&chp->lock, flag);
 315                 chp->cq.rptr = rptr;
 316         } else
 317                 spin_lock_irqsave(&chp->lock, flag);
 318         PDBG("%s rptr 0x%x\n", __FUNCTION__, chp->cq.rptr);
 319         err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
 320         spin_unlock_irqrestore(&chp->lock, flag);
 321         if (err)
 322                 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
 323                        chp->cq.cqid);
 324         return err;
 325 }
 326
 327 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 328 {
 329         int len = vma->vm_end - vma->vm_start;
 330         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 331         struct cxio_rdev *rdev_p;
 332         int ret = 0;
 333         struct iwch_mm_entry *mm;
 334         struct iwch_ucontext *ucontext;
 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         kfree(mm);
 350
 351         if ((mm->addr >= rdev_p->rnic_info.udbell_physbase) &&
 352             (mm->addr < (rdev_p->rnic_info.udbell_physbase +
 353                        rdev_p->rnic_info.udbell_len))) {
 354
 355                 /*
 356                  * Map T3 DB register.
 357                  */
 358                 if (vma->vm_flags & VM_READ) {
 359                         return -EPERM;
 360                 }
 361
 362                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 363                 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
 364                 vma->vm_flags &= ~VM_MAYREAD;
 365                 ret = io_remap_pfn_range(vma, vma->vm_start,
 366                                          mm->addr >> PAGE_SHIFT,
 367                                          len, vma->vm_page_prot);
 368         } else {
 369
 370                 /*
 371                  * Map WQ or CQ contig dma memory...
 372                  */
 373                 ret = remap_pfn_range(vma, vma->vm_start,
 374                                       mm->addr >> PAGE_SHIFT,
 375                                       len, vma->vm_page_prot);
 376         }
 377
 378         return ret;
 379 }
 380
 381 static int iwch_deallocate_pd(struct ib_pd *pd)
 382 {
 383         struct iwch_dev *rhp;
 384         struct iwch_pd *php;
 385
 386         php = to_iwch_pd(pd);
 387         rhp = php->rhp;
 388         PDBG("%s ibpd %p pdid 0x%x\n", __FUNCTION__, pd, php->pdid);
 389         cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
 390         kfree(php);
 391         return 0;
 392 }
 393
 394 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
 395                                struct ib_ucontext *context,
 396                                struct ib_udata *udata)
 397 {
 398         struct iwch_pd *php;
 399         u32 pdid;
 400         struct iwch_dev *rhp;
 401
 402         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 403         rhp = (struct iwch_dev *) ibdev;
 404         pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
 405         if (!pdid)
 406                 return ERR_PTR(-EINVAL);
 407         php = kzalloc(sizeof(*php), GFP_KERNEL);
 408         if (!php) {
 409                 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
 410                 return ERR_PTR(-ENOMEM);
 411         }
 412         php->pdid = pdid;
 413         php->rhp = rhp;
 414         if (context) {
 415                 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
 416                         iwch_deallocate_pd(&php->ibpd);
 417                         return ERR_PTR(-EFAULT);
 418                 }
 419         }
 420         PDBG("%s pdid 0x%0x ptr 0x%p\n", __FUNCTION__, pdid, php);
 421         return &php->ibpd;
 422 }
 423
 424 static int iwch_dereg_mr(struct ib_mr *ib_mr)
 425 {
 426         struct iwch_dev *rhp;
 427         struct iwch_mr *mhp;
 428         u32 mmid;
 429
 430         PDBG("%s ib_mr %p\n", __FUNCTION__, ib_mr);
 431         /* There can be no memory windows */
 432         if (atomic_read(&ib_mr->usecnt))
 433                 return -EINVAL;
 434
 435         mhp = to_iwch_mr(ib_mr);
 436         rhp = mhp->rhp;
 437         mmid = mhp->attr.stag >> 8;
 438         cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
 439                        mhp->attr.pbl_addr);
 440         remove_handle(rhp, &rhp->mmidr, mmid);
 441         if (mhp->kva)
 442                 kfree((void *) (unsigned long) mhp->kva);
 443         PDBG("%s mmid 0x%x ptr %p\n", __FUNCTION__, mmid, mhp);
 444         kfree(mhp);
 445         return 0;
 446 }
 447
 448 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
 449                                         struct ib_phys_buf *buffer_list,
 450                                         int num_phys_buf,
 451                                         int acc,
 452                                         u64 *iova_start)
 453 {
 454         __be64 *page_list;
 455         int shift;
 456         u64 total_size;
 457         int npages;
 458         struct iwch_dev *rhp;
 459         struct iwch_pd *php;
 460         struct iwch_mr *mhp;
 461         int ret;
 462
 463         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 464         php = to_iwch_pd(pd);
 465         rhp = php->rhp;
 466
 467         acc = iwch_convert_access(acc);
 468
 469
 470         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 471         if (!mhp)
 472                 return ERR_PTR(-ENOMEM);
 473
 474         /* First check that we have enough alignment */
 475         if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
 476                 ret = -EINVAL;
 477                 goto err;
 478         }
 479
 480         if (num_phys_buf > 1 &&
 481             ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
 482                 ret = -EINVAL;
 483                 goto err;
 484         }
 485
 486         ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
 487                                    &total_size, &npages, &shift, &page_list);
 488         if (ret)
 489                 goto err;
 490
 491         mhp->rhp = rhp;
 492         mhp->attr.pdid = php->pdid;
 493         mhp->attr.zbva = 0;
 494
 495         /* NOTE: TPT perms are backwards from BIND WR perms! */
 496         mhp->attr.perms = (acc & 0x1) << 3;
 497         mhp->attr.perms |= (acc & 0x2) << 1;
 498         mhp->attr.perms |= (acc & 0x4) >> 1;
 499         mhp->attr.perms |= (acc & 0x8) >> 3;
 500
 501         mhp->attr.va_fbo = *iova_start;
 502         mhp->attr.page_size = shift - 12;
 503
 504         mhp->attr.len = (u32) total_size;
 505         mhp->attr.pbl_size = npages;
 506         ret = iwch_register_mem(rhp, php, mhp, shift, page_list);
 507         kfree(page_list);
 508         if (ret) {
 509                 goto err;
 510         }
 511         return &mhp->ibmr;
 512 err:
 513         kfree(mhp);
 514         return ERR_PTR(ret);
 515
 516 }
 517
 518 static int iwch_reregister_phys_mem(struct ib_mr *mr,
 519                                      int mr_rereg_mask,
 520                                      struct ib_pd *pd,
 521                                      struct ib_phys_buf *buffer_list,
 522                                      int num_phys_buf,
 523                                      int acc, u64 * iova_start)
 524 {
 525
 526         struct iwch_mr mh, *mhp;
 527         struct iwch_pd *php;
 528         struct iwch_dev *rhp;
 529         int new_acc;
 530         __be64 *page_list = NULL;
 531         int shift = 0;
 532         u64 total_size;
 533         int npages;
 534         int ret;
 535
 536         PDBG("%s ib_mr %p ib_pd %p\n", __FUNCTION__, mr, pd);
 537
 538         /* There can be no memory windows */
 539         if (atomic_read(&mr->usecnt))
 540                 return -EINVAL;
 541
 542         mhp = to_iwch_mr(mr);
 543         rhp = mhp->rhp;
 544         php = to_iwch_pd(mr->pd);
 545
 546         /* make sure we are on the same adapter */
 547         if (rhp != php->rhp)
 548                 return -EINVAL;
 549
 550         new_acc = mhp->attr.perms;
 551
 552         memcpy(&mh, mhp, sizeof *mhp);
 553
 554         if (mr_rereg_mask & IB_MR_REREG_PD)
 555                 php = to_iwch_pd(pd);
 556         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 557                 mh.attr.perms = iwch_convert_access(acc);
 558         if (mr_rereg_mask & IB_MR_REREG_TRANS)
 559                 ret = build_phys_page_list(buffer_list, num_phys_buf,
 560                                            iova_start,
 561                                            &total_size, &npages,
 562                                            &shift, &page_list);
 563
 564         ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
 565         kfree(page_list);
 566         if (ret) {
 567                 return ret;
 568         }
 569         if (mr_rereg_mask & IB_MR_REREG_PD)
 570                 mhp->attr.pdid = php->pdid;
 571         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 572                 mhp->attr.perms = acc;
 573         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
 574                 mhp->attr.zbva = 0;
 575                 mhp->attr.va_fbo = *iova_start;
 576                 mhp->attr.page_size = shift - 12;
 577                 mhp->attr.len = (u32) total_size;
 578                 mhp->attr.pbl_size = npages;
 579         }
 580
 581         return 0;
 582 }
 583
 584
 585 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
 586                                       int acc, struct ib_udata *udata)
 587 {
 588         __be64 *pages;
 589         int shift, n, len;
 590         int i, j, k;
 591         int err = 0;
 592         struct ib_umem_chunk *chunk;
 593         struct iwch_dev *rhp;
 594         struct iwch_pd *php;
 595         struct iwch_mr *mhp;
 596         struct iwch_reg_user_mr_resp uresp;
 597
 598         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 599         shift = ffs(region->page_size) - 1;
 600
 601         php = to_iwch_pd(pd);
 602         rhp = php->rhp;
 603         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 604         if (!mhp)
 605                 return ERR_PTR(-ENOMEM);
 606
 607         n = 0;
 608         list_for_each_entry(chunk, &region->chunk_list, list)
 609                 n += chunk->nents;
 610
 611         pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
 612         if (!pages) {
 613                 err = -ENOMEM;
 614                 goto err;
 615         }
 616
 617         acc = iwch_convert_access(acc);
 618
 619         i = n = 0;
 620
 621         list_for_each_entry(chunk, &region->chunk_list, list)
 622                 for (j = 0; j < chunk->nmap; ++j) {
 623                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
 624                         for (k = 0; k < len; ++k) {
 625                                 pages[i++] = cpu_to_be64(sg_dma_address(
 626                                         &chunk->page_list[j]) +
 627                                         region->page_size * k);
 628                         }
 629                 }
 630
 631         mhp->rhp = rhp;
 632         mhp->attr.pdid = php->pdid;
 633         mhp->attr.zbva = 0;
 634         mhp->attr.perms = (acc & 0x1) << 3;
 635         mhp->attr.perms |= (acc & 0x2) << 1;
 636         mhp->attr.perms |= (acc & 0x4) >> 1;
 637         mhp->attr.perms |= (acc & 0x8) >> 3;
 638         mhp->attr.va_fbo = region->virt_base;
 639         mhp->attr.page_size = shift - 12;
 640         mhp->attr.len = (u32) region->length;
 641         mhp->attr.pbl_size = i;
 642         err = iwch_register_mem(rhp, php, mhp, shift, pages);
 643         kfree(pages);
 644         if (err)
 645                 goto err;
 646
 647         if (udata && t3b_device(rhp)) {
 648                 uresp.pbl_addr = (mhp->attr.pbl_addr -
 649                                  rhp->rdev.rnic_info.pbl_base) >> 3;
 650                 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
 651                      uresp.pbl_addr);
 652
 653                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 654                         iwch_dereg_mr(&mhp->ibmr);
 655                         err = -EFAULT;
 656                         goto err;
 657                 }
 658         }
 659
 660         return &mhp->ibmr;
 661
 662 err:
 663         kfree(mhp);
 664         return ERR_PTR(err);
 665 }
 666
 667 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
 668 {
 669         struct ib_phys_buf bl;
 670         u64 kva;
 671         struct ib_mr *ibmr;
 672
 673         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 674
 675         /*
 676          * T3 only supports 32 bits of size.
 677          */
 678         bl.size = 0xffffffff;
 679         bl.addr = 0;
 680         kva = 0;
 681         ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
 682         return ibmr;
 683 }
 684
 685 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
 686 {
 687         struct iwch_dev *rhp;
 688         struct iwch_pd *php;
 689         struct iwch_mw *mhp;
 690         u32 mmid;
 691         u32 stag = 0;
 692         int ret;
 693
 694         php = to_iwch_pd(pd);
 695         rhp = php->rhp;
 696         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 697         if (!mhp)
 698                 return ERR_PTR(-ENOMEM);
 699         ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
 700         if (ret) {
 701                 kfree(mhp);
 702                 return ERR_PTR(ret);
 703         }
 704         mhp->rhp = rhp;
 705         mhp->attr.pdid = php->pdid;
 706         mhp->attr.type = TPT_MW;
 707         mhp->attr.stag = stag;
 708         mmid = (stag) >> 8;
 709         insert_handle(rhp, &rhp->mmidr, mhp, mmid);
 710         PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
 711         return &(mhp->ibmw);
 712 }
 713
 714 static int iwch_dealloc_mw(struct ib_mw *mw)
 715 {
 716         struct iwch_dev *rhp;
 717         struct iwch_mw *mhp;
 718         u32 mmid;
 719
 720         mhp = to_iwch_mw(mw);
 721         rhp = mhp->rhp;
 722         mmid = (mw->rkey) >> 8;
 723         cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
 724         remove_handle(rhp, &rhp->mmidr, mmid);
 725         kfree(mhp);
 726         PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
 727         return 0;
 728 }
 729
 730 static int iwch_destroy_qp(struct ib_qp *ib_qp)
 731 {
 732         struct iwch_dev *rhp;
 733         struct iwch_qp *qhp;
 734         struct iwch_qp_attributes attrs;
 735         struct iwch_ucontext *ucontext;
 736
 737         qhp = to_iwch_qp(ib_qp);
 738         rhp = qhp->rhp;
 739
 740         if (qhp->attr.state == IWCH_QP_STATE_RTS) {
 741                 attrs.next_state = IWCH_QP_STATE_ERROR;
 742                 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
 743         }
 744         wait_event(qhp->wait, !qhp->ep);
 745
 746         remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
 747
 748         atomic_dec(&qhp->refcnt);
 749         wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
 750
 751         ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
 752                                   : NULL;
 753         cxio_destroy_qp(&rhp->rdev, &qhp->wq,
 754                         ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
 755
 756         PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __FUNCTION__,
 757              ib_qp, qhp->wq.qpid, qhp);
 758         kfree(qhp);
 759         return 0;
 760 }
 761
 762 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
 763                              struct ib_qp_init_attr *attrs,
 764                              struct ib_udata *udata)
 765 {
 766         struct iwch_dev *rhp;
 767         struct iwch_qp *qhp;
 768         struct iwch_pd *php;
 769         struct iwch_cq *schp;
 770         struct iwch_cq *rchp;
 771         struct iwch_create_qp_resp uresp;
 772         int wqsize, sqsize, rqsize;
 773         struct iwch_ucontext *ucontext;
 774
 775         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 776         if (attrs->qp_type != IB_QPT_RC)
 777                 return ERR_PTR(-EINVAL);
 778         php = to_iwch_pd(pd);
 779         rhp = php->rhp;
 780         schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
 781         rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
 782         if (!schp || !rchp)
 783                 return ERR_PTR(-EINVAL);
 784
 785         /* The RQT size must be # of entries + 1 rounded up to a power of two */
 786         rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
 787         if (rqsize == attrs->cap.max_recv_wr)
 788                 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
 789
 790         /* T3 doesn't support RQT depth < 16 */
 791         if (rqsize < 16)
 792                 rqsize = 16;
 793
 794         if (rqsize > T3_MAX_RQ_SIZE)
 795                 return ERR_PTR(-EINVAL);
 796
 797         /*
 798          * NOTE: The SQ and total WQ sizes don't need to be
 799          * a power of two.  However, all the code assumes
 800          * they are. EG: Q_FREECNT() and friends.
 801          */
 802         sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
 803         wqsize = roundup_pow_of_two(rqsize + sqsize);
 804         PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
 805              wqsize, sqsize, rqsize);
 806         qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
 807         if (!qhp)
 808                 return ERR_PTR(-ENOMEM);
 809         qhp->wq.size_log2 = ilog2(wqsize);
 810         qhp->wq.rq_size_log2 = ilog2(rqsize);
 811         qhp->wq.sq_size_log2 = ilog2(sqsize);
 812         ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
 813         if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
 814                            ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
 815                 kfree(qhp);
 816                 return ERR_PTR(-ENOMEM);
 817         }
 818         attrs->cap.max_recv_wr = rqsize - 1;
 819         attrs->cap.max_send_wr = sqsize;
 820         qhp->rhp = rhp;
 821         qhp->attr.pd = php->pdid;
 822         qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
 823         qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
 824         qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
 825         qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
 826         qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
 827         qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
 828         qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
 829         qhp->attr.state = IWCH_QP_STATE_IDLE;
 830         qhp->attr.next_state = IWCH_QP_STATE_IDLE;
 831
 832         /*
 833          * XXX - These don't get passed in from the openib user
 834          * at create time.  The CM sets them via a QP modify.
 835          * Need to fix...  I think the CM should
 836          */
 837         qhp->attr.enable_rdma_read = 1;
 838         qhp->attr.enable_rdma_write = 1;
 839         qhp->attr.enable_bind = 1;
 840         qhp->attr.max_ord = 1;
 841         qhp->attr.max_ird = 1;
 842
 843         spin_lock_init(&qhp->lock);
 844         init_waitqueue_head(&qhp->wait);
 845         atomic_set(&qhp->refcnt, 1);
 846         insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
 847
 848         if (udata) {
 849
 850                 struct iwch_mm_entry *mm1, *mm2;
 851
 852                 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
 853                 if (!mm1) {
 854                         iwch_destroy_qp(&qhp->ibqp);
 855                         return ERR_PTR(-ENOMEM);
 856                 }
 857
 858                 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
 859                 if (!mm2) {
 860                         kfree(mm1);
 861                         iwch_destroy_qp(&qhp->ibqp);
 862                         return ERR_PTR(-ENOMEM);
 863                 }
 864
 865                 uresp.qpid = qhp->wq.qpid;
 866                 uresp.size_log2 = qhp->wq.size_log2;
 867                 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
 868                 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
 869                 spin_lock(&ucontext->mmap_lock);
 870                 uresp.key = ucontext->key;
 871                 ucontext->key += PAGE_SIZE;
 872                 uresp.db_key = ucontext->key;
 873                 ucontext->key += PAGE_SIZE;
 874                 spin_unlock(&ucontext->mmap_lock);
 875                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 876                         kfree(mm1);
 877                         kfree(mm2);
 878                         iwch_destroy_qp(&qhp->ibqp);
 879                         return ERR_PTR(-EFAULT);
 880                 }
 881                 mm1->key = uresp.key;
 882                 mm1->addr = virt_to_phys(qhp->wq.queue);
 883                 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
 884                 insert_mmap(ucontext, mm1);
 885                 mm2->key = uresp.db_key;
 886                 mm2->addr = qhp->wq.udb & PAGE_MASK;
 887                 mm2->len = PAGE_SIZE;
 888                 insert_mmap(ucontext, mm2);
 889         }
 890         qhp->ibqp.qp_num = qhp->wq.qpid;
 891         init_timer(&(qhp->timer));
 892         PDBG("%s sq_num_entries %d, rq_num_entries %d "
 893              "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
 894              __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
 895              qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
 896              1 << qhp->wq.size_log2);
 897         return &qhp->ibqp;
 898 }
 899
 900 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 901                       int attr_mask, struct ib_udata *udata)
 902 {
 903         struct iwch_dev *rhp;
 904         struct iwch_qp *qhp;
 905         enum iwch_qp_attr_mask mask = 0;
 906         struct iwch_qp_attributes attrs;
 907
 908         PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
 909
 910         /* iwarp does not support the RTR state */
 911         if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
 912                 attr_mask &= ~IB_QP_STATE;
 913
 914         /* Make sure we still have something left to do */
 915         if (!attr_mask)
 916                 return 0;
 917
 918         memset(&attrs, 0, sizeof attrs);
 919         qhp = to_iwch_qp(ibqp);
 920         rhp = qhp->rhp;
 921
 922         attrs.next_state = iwch_convert_state(attr->qp_state);
 923         attrs.enable_rdma_read = (attr->qp_access_flags &
 924                                IB_ACCESS_REMOTE_READ) ?  1 : 0;
 925         attrs.enable_rdma_write = (attr->qp_access_flags &
 926                                 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
 927         attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
 928
 929
 930         mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
 931         mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
 932                         (IWCH_QP_ATTR_ENABLE_RDMA_READ |
 933                          IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
 934                          IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
 935
 936         return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
 937 }
 938
 939 void iwch_qp_add_ref(struct ib_qp *qp)
 940 {
 941         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 942         atomic_inc(&(to_iwch_qp(qp)->refcnt));
 943 }
 944
 945 void iwch_qp_rem_ref(struct ib_qp *qp)
 946 {
 947         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 948         if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
 949                 wake_up(&(to_iwch_qp(qp)->wait));
 950 }
 951
 952 struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
 953 {
 954         PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
 955         return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
 956 }
 957
 958
 959 static int iwch_query_pkey(struct ib_device *ibdev,
 960                            u8 port, u16 index, u16 * pkey)
 961 {
 962         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 963         *pkey = 0;
 964         return 0;
 965 }
 966
 967 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
 968                           int index, union ib_gid *gid)
 969 {
 970         struct iwch_dev *dev;
 971
 972         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 973                __FUNCTION__, ibdev, port, index, gid);
 974         dev = to_iwch_dev(ibdev);
 975         BUG_ON(port == 0 || port > 2);
 976         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 977         memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
 978         return 0;
 979 }
 980
 981 static int iwch_query_device(struct ib_device *ibdev,
 982                              struct ib_device_attr *props)
 983 {
 984
 985         struct iwch_dev *dev;
 986         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 987
 988         dev = to_iwch_dev(ibdev);
 989         memset(props, 0, sizeof *props);
 990         memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
 991         props->device_cap_flags = dev->device_cap_flags;
 992         props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
 993         props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
 994         props->max_mr_size = ~0ull;
 995         props->max_qp = dev->attr.max_qps;
 996         props->max_qp_wr = dev->attr.max_wrs;
 997         props->max_sge = dev->attr.max_sge_per_wr;
 998         props->max_sge_rd = 1;
 999         props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1000         props->max_cq = dev->attr.max_cqs;
1001         props->max_cqe = dev->attr.max_cqes_per_cq;
1002         props->max_mr = dev->attr.max_mem_regs;
1003         props->max_pd = dev->attr.max_pds;
1004         props->local_ca_ack_delay = 0;
1005
1006         return 0;
1007 }
1008
1009 static int iwch_query_port(struct ib_device *ibdev,
1010                            u8 port, struct ib_port_attr *props)
1011 {
1012         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
1013         props->max_mtu = IB_MTU_4096;
1014         props->lid = 0;
1015         props->lmc = 0;
1016         props->sm_lid = 0;
1017         props->sm_sl = 0;
1018         props->state = IB_PORT_ACTIVE;
1019         props->phys_state = 0;
1020         props->port_cap_flags =
1021             IB_PORT_CM_SUP |
1022             IB_PORT_SNMP_TUNNEL_SUP |
1023             IB_PORT_REINIT_SUP |
1024             IB_PORT_DEVICE_MGMT_SUP |
1025             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1026         props->gid_tbl_len = 1;
1027         props->pkey_tbl_len = 1;
1028         props->qkey_viol_cntr = 0;
1029         props->active_width = 2;
1030         props->active_speed = 2;
1031         props->max_msg_sz = -1;
1032
1033         return 0;
1034 }
1035
1036 static ssize_t show_rev(struct class_device *cdev, char *buf)
1037 {
1038         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1039                                             ibdev.class_dev);
1040         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1041         return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1042 }
1043
1044 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1045 {
1046         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1047                                             ibdev.class_dev);
1048         struct ethtool_drvinfo info;
1049         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1050
1051         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1052         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1053         return sprintf(buf, "%s\n", info.fw_version);
1054 }
1055
1056 static ssize_t show_hca(struct class_device *cdev, char *buf)
1057 {
1058         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1059                                             ibdev.class_dev);
1060         struct ethtool_drvinfo info;
1061         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1062
1063         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1064         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1065         return sprintf(buf, "%s\n", info.driver);
1066 }
1067
1068 static ssize_t show_board(struct class_device *cdev, char *buf)
1069 {
1070         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1071                                             ibdev.class_dev);
1072         PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1073         return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1074                                        dev->rdev.rnic_info.pdev->device);
1075 }
1076
1077 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1078 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1079 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1080 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1081
1082 static struct class_device_attribute *iwch_class_attributes[] = {
1083         &class_device_attr_hw_rev,
1084         &class_device_attr_fw_ver,
1085         &class_device_attr_hca_type,
1086         &class_device_attr_board_id
1087 };
1088
1089 int iwch_register_device(struct iwch_dev *dev)
1090 {
1091         int ret;
1092         int i;
1093
1094         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1095         strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1096         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1097         memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1098         dev->ibdev.owner = THIS_MODULE;
1099         dev->device_cap_flags =
1100             (IB_DEVICE_ZERO_STAG |
1101              IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1102
1103         dev->ibdev.uverbs_cmd_mask =
1104             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1105             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1106             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1107             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1108             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1109             (1ull << IB_USER_VERBS_CMD_REG_MR) |
1110             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1111             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1112             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1113             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1114             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1115             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1116             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1117             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1118             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1119             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1120             (1ull << IB_USER_VERBS_CMD_POST_RECV);
1121         dev->ibdev.node_type = RDMA_NODE_RNIC;
1122         memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1123         dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1124         dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1125         dev->ibdev.class_dev.dev = &(dev->rdev.rnic_info.pdev->dev);
1126         dev->ibdev.query_device = iwch_query_device;
1127         dev->ibdev.query_port = iwch_query_port;
1128         dev->ibdev.modify_port = iwch_modify_port;
1129         dev->ibdev.query_pkey = iwch_query_pkey;
1130         dev->ibdev.query_gid = iwch_query_gid;
1131         dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1132         dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1133         dev->ibdev.mmap = iwch_mmap;
1134         dev->ibdev.alloc_pd = iwch_allocate_pd;
1135         dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1136         dev->ibdev.create_ah = iwch_ah_create;
1137         dev->ibdev.destroy_ah = iwch_ah_destroy;
1138         dev->ibdev.create_qp = iwch_create_qp;
1139         dev->ibdev.modify_qp = iwch_ib_modify_qp;
1140         dev->ibdev.destroy_qp = iwch_destroy_qp;
1141         dev->ibdev.create_cq = iwch_create_cq;
1142         dev->ibdev.destroy_cq = iwch_destroy_cq;
1143         dev->ibdev.resize_cq = iwch_resize_cq;
1144         dev->ibdev.poll_cq = iwch_poll_cq;
1145         dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1146         dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1147         dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1148         dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1149         dev->ibdev.dereg_mr = iwch_dereg_mr;
1150         dev->ibdev.alloc_mw = iwch_alloc_mw;
1151         dev->ibdev.bind_mw = iwch_bind_mw;
1152         dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1153
1154         dev->ibdev.attach_mcast = iwch_multicast_attach;
1155         dev->ibdev.detach_mcast = iwch_multicast_detach;
1156         dev->ibdev.process_mad = iwch_process_mad;
1157
1158         dev->ibdev.req_notify_cq = iwch_arm_cq;
1159         dev->ibdev.post_send = iwch_post_send;
1160         dev->ibdev.post_recv = iwch_post_receive;
1161
1162
1163         dev->ibdev.iwcm =
1164             (struct iw_cm_verbs *) kmalloc(sizeof(struct iw_cm_verbs),
1165                                            GFP_KERNEL);
1166         dev->ibdev.iwcm->connect = iwch_connect;
1167         dev->ibdev.iwcm->accept = iwch_accept_cr;
1168         dev->ibdev.iwcm->reject = iwch_reject_cr;
1169         dev->ibdev.iwcm->create_listen = iwch_create_listen;
1170         dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1171         dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1172         dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1173         dev->ibdev.iwcm->get_qp = iwch_get_qp;
1174
1175         ret = ib_register_device(&dev->ibdev);
1176         if (ret)
1177                 goto bail1;
1178
1179         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1180                 ret = class_device_create_file(&dev->ibdev.class_dev,
1181                                                iwch_class_attributes[i]);
1182                 if (ret) {
1183                         goto bail2;
1184                 }
1185         }
1186         return 0;
1187 bail2:
1188         ib_unregister_device(&dev->ibdev);
1189 bail1:
1190         return ret;
1191 }
1192
1193 void iwch_unregister_device(struct iwch_dev *dev)
1194 {
1195         int i;
1196
1197         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1198         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1199                 class_device_remove_file(&dev->ibdev.class_dev,
1200                                          iwch_class_attributes[i]);
1201         ib_unregister_device(&dev->ibdev);
1202         return;
1203 }