drivers/infiniband/hw/cxgb3/iwch_provider.c

   1 /*
   2  * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32 #include <linux/module.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/device.h>
  35 #include <linux/netdevice.h>
  36 #include <linux/etherdevice.h>
  37 #include <linux/delay.h>
  38 #include <linux/errno.h>
  39 #include <linux/list.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/ethtool.h>
  42
  43 #include <asm/io.h>
  44 #include <asm/irq.h>
  45 #include <asm/byteorder.h>
  46
  47 #include <rdma/iw_cm.h>
  48 #include <rdma/ib_verbs.h>
  49 #include <rdma/ib_smi.h>
  50 #include <rdma/ib_umem.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, int vector,
 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_flags flags)
 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 ((flags & IB_CQ_SOLICITED_MASK) == 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 < 0)
 322                 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
 323                        chp->cq.cqid);
 324         if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
 325                 err = 0;
 326         return err;
 327 }
 328
 329 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 330 {
 331         int len = vma->vm_end - vma->vm_start;
 332         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 333         struct cxio_rdev *rdev_p;
 334         int ret = 0;
 335         struct iwch_mm_entry *mm;
 336         struct iwch_ucontext *ucontext;
 337         u64 addr;
 338
 339         PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __FUNCTION__, vma->vm_pgoff,
 340              key, len);
 341
 342         if (vma->vm_start & (PAGE_SIZE-1)) {
 343                 return -EINVAL;
 344         }
 345
 346         rdev_p = &(to_iwch_dev(context->device)->rdev);
 347         ucontext = to_iwch_ucontext(context);
 348
 349         mm = remove_mmap(ucontext, key, len);
 350         if (!mm)
 351                 return -EINVAL;
 352         addr = mm->addr;
 353         kfree(mm);
 354
 355         if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
 356             (addr < (rdev_p->rnic_info.udbell_physbase +
 357                        rdev_p->rnic_info.udbell_len))) {
 358
 359                 /*
 360                  * Map T3 DB register.
 361                  */
 362                 if (vma->vm_flags & VM_READ) {
 363                         return -EPERM;
 364                 }
 365
 366                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 367                 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
 368                 vma->vm_flags &= ~VM_MAYREAD;
 369                 ret = io_remap_pfn_range(vma, vma->vm_start,
 370                                          addr >> PAGE_SHIFT,
 371                                          len, vma->vm_page_prot);
 372         } else {
 373
 374                 /*
 375                  * Map WQ or CQ contig dma memory...
 376                  */
 377                 ret = remap_pfn_range(vma, vma->vm_start,
 378                                       addr >> PAGE_SHIFT,
 379                                       len, vma->vm_page_prot);
 380         }
 381
 382         return ret;
 383 }
 384
 385 static int iwch_deallocate_pd(struct ib_pd *pd)
 386 {
 387         struct iwch_dev *rhp;
 388         struct iwch_pd *php;
 389
 390         php = to_iwch_pd(pd);
 391         rhp = php->rhp;
 392         PDBG("%s ibpd %p pdid 0x%x\n", __FUNCTION__, pd, php->pdid);
 393         cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
 394         kfree(php);
 395         return 0;
 396 }
 397
 398 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
 399                                struct ib_ucontext *context,
 400                                struct ib_udata *udata)
 401 {
 402         struct iwch_pd *php;
 403         u32 pdid;
 404         struct iwch_dev *rhp;
 405
 406         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 407         rhp = (struct iwch_dev *) ibdev;
 408         pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
 409         if (!pdid)
 410                 return ERR_PTR(-EINVAL);
 411         php = kzalloc(sizeof(*php), GFP_KERNEL);
 412         if (!php) {
 413                 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
 414                 return ERR_PTR(-ENOMEM);
 415         }
 416         php->pdid = pdid;
 417         php->rhp = rhp;
 418         if (context) {
 419                 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
 420                         iwch_deallocate_pd(&php->ibpd);
 421                         return ERR_PTR(-EFAULT);
 422                 }
 423         }
 424         PDBG("%s pdid 0x%0x ptr 0x%p\n", __FUNCTION__, pdid, php);
 425         return &php->ibpd;
 426 }
 427
 428 static int iwch_dereg_mr(struct ib_mr *ib_mr)
 429 {
 430         struct iwch_dev *rhp;
 431         struct iwch_mr *mhp;
 432         u32 mmid;
 433
 434         PDBG("%s ib_mr %p\n", __FUNCTION__, ib_mr);
 435         /* There can be no memory windows */
 436         if (atomic_read(&ib_mr->usecnt))
 437                 return -EINVAL;
 438
 439         mhp = to_iwch_mr(ib_mr);
 440         rhp = mhp->rhp;
 441         mmid = mhp->attr.stag >> 8;
 442         cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
 443                        mhp->attr.pbl_addr);
 444         remove_handle(rhp, &rhp->mmidr, mmid);
 445         if (mhp->kva)
 446                 kfree((void *) (unsigned long) mhp->kva);
 447         if (mhp->umem)
 448                 ib_umem_release(mhp->umem);
 449         PDBG("%s mmid 0x%x ptr %p\n", __FUNCTION__, mmid, mhp);
 450         kfree(mhp);
 451         return 0;
 452 }
 453
 454 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
 455                                         struct ib_phys_buf *buffer_list,
 456                                         int num_phys_buf,
 457                                         int acc,
 458                                         u64 *iova_start)
 459 {
 460         __be64 *page_list;
 461         int shift;
 462         u64 total_size;
 463         int npages;
 464         struct iwch_dev *rhp;
 465         struct iwch_pd *php;
 466         struct iwch_mr *mhp;
 467         int ret;
 468
 469         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 470         php = to_iwch_pd(pd);
 471         rhp = php->rhp;
 472
 473         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 474         if (!mhp)
 475                 return ERR_PTR(-ENOMEM);
 476
 477         /* First check that we have enough alignment */
 478         if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
 479                 ret = -EINVAL;
 480                 goto err;
 481         }
 482
 483         if (num_phys_buf > 1 &&
 484             ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
 485                 ret = -EINVAL;
 486                 goto err;
 487         }
 488
 489         ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
 490                                    &total_size, &npages, &shift, &page_list);
 491         if (ret)
 492                 goto err;
 493
 494         mhp->rhp = rhp;
 495         mhp->attr.pdid = php->pdid;
 496         mhp->attr.zbva = 0;
 497
 498         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 499         mhp->attr.va_fbo = *iova_start;
 500         mhp->attr.page_size = shift - 12;
 501
 502         mhp->attr.len = (u32) total_size;
 503         mhp->attr.pbl_size = npages;
 504         ret = iwch_register_mem(rhp, php, mhp, shift, page_list);
 505         kfree(page_list);
 506         if (ret) {
 507                 goto err;
 508         }
 509         return &mhp->ibmr;
 510 err:
 511         kfree(mhp);
 512         return ERR_PTR(ret);
 513
 514 }
 515
 516 static int iwch_reregister_phys_mem(struct ib_mr *mr,
 517                                      int mr_rereg_mask,
 518                                      struct ib_pd *pd,
 519                                      struct ib_phys_buf *buffer_list,
 520                                      int num_phys_buf,
 521                                      int acc, u64 * iova_start)
 522 {
 523
 524         struct iwch_mr mh, *mhp;
 525         struct iwch_pd *php;
 526         struct iwch_dev *rhp;
 527         __be64 *page_list = NULL;
 528         int shift = 0;
 529         u64 total_size;
 530         int npages;
 531         int ret;
 532
 533         PDBG("%s ib_mr %p ib_pd %p\n", __FUNCTION__, mr, pd);
 534
 535         /* There can be no memory windows */
 536         if (atomic_read(&mr->usecnt))
 537                 return -EINVAL;
 538
 539         mhp = to_iwch_mr(mr);
 540         rhp = mhp->rhp;
 541         php = to_iwch_pd(mr->pd);
 542
 543         /* make sure we are on the same adapter */
 544         if (rhp != php->rhp)
 545                 return -EINVAL;
 546
 547         memcpy(&mh, mhp, sizeof *mhp);
 548
 549         if (mr_rereg_mask & IB_MR_REREG_PD)
 550                 php = to_iwch_pd(pd);
 551         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 552                 mh.attr.perms = iwch_ib_to_tpt_access(acc);
 553         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
 554                 ret = build_phys_page_list(buffer_list, num_phys_buf,
 555                                            iova_start,
 556                                            &total_size, &npages,
 557                                            &shift, &page_list);
 558                 if (ret)
 559                         return ret;
 560         }
 561
 562         ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
 563         kfree(page_list);
 564         if (ret) {
 565                 return ret;
 566         }
 567         if (mr_rereg_mask & IB_MR_REREG_PD)
 568                 mhp->attr.pdid = php->pdid;
 569         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
 570                 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 571         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
 572                 mhp->attr.zbva = 0;
 573                 mhp->attr.va_fbo = *iova_start;
 574                 mhp->attr.page_size = shift - 12;
 575                 mhp->attr.len = (u32) total_size;
 576                 mhp->attr.pbl_size = npages;
 577         }
 578
 579         return 0;
 580 }
 581
 582
 583 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 584                                       u64 virt, int acc, struct ib_udata *udata)
 585 {
 586         __be64 *pages;
 587         int shift, n, len;
 588         int i, j, k;
 589         int err = 0;
 590         struct ib_umem_chunk *chunk;
 591         struct iwch_dev *rhp;
 592         struct iwch_pd *php;
 593         struct iwch_mr *mhp;
 594         struct iwch_reg_user_mr_resp uresp;
 595
 596         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 597
 598         php = to_iwch_pd(pd);
 599         rhp = php->rhp;
 600         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 601         if (!mhp)
 602                 return ERR_PTR(-ENOMEM);
 603
 604         mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc);
 605         if (IS_ERR(mhp->umem)) {
 606                 err = PTR_ERR(mhp->umem);
 607                 kfree(mhp);
 608                 return ERR_PTR(err);
 609         }
 610
 611         shift = ffs(mhp->umem->page_size) - 1;
 612
 613         n = 0;
 614         list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
 615                 n += chunk->nents;
 616
 617         pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
 618         if (!pages) {
 619                 err = -ENOMEM;
 620                 goto err;
 621         }
 622
 623         i = n = 0;
 624
 625         list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
 626                 for (j = 0; j < chunk->nmap; ++j) {
 627                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
 628                         for (k = 0; k < len; ++k) {
 629                                 pages[i++] = cpu_to_be64(sg_dma_address(
 630                                         &chunk->page_list[j]) +
 631                                         mhp->umem->page_size * k);
 632                         }
 633                 }
 634
 635         mhp->rhp = rhp;
 636         mhp->attr.pdid = php->pdid;
 637         mhp->attr.zbva = 0;
 638         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
 639         mhp->attr.va_fbo = virt;
 640         mhp->attr.page_size = shift - 12;
 641         mhp->attr.len = (u32) length;
 642         mhp->attr.pbl_size = i;
 643         err = iwch_register_mem(rhp, php, mhp, shift, pages);
 644         kfree(pages);
 645         if (err)
 646                 goto err;
 647
 648         if (udata && t3b_device(rhp)) {
 649                 uresp.pbl_addr = (mhp->attr.pbl_addr -
 650                                  rhp->rdev.rnic_info.pbl_base) >> 3;
 651                 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
 652                      uresp.pbl_addr);
 653
 654                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 655                         iwch_dereg_mr(&mhp->ibmr);
 656                         err = -EFAULT;
 657                         goto err;
 658                 }
 659         }
 660
 661         return &mhp->ibmr;
 662
 663 err:
 664         ib_umem_release(mhp->umem);
 665         kfree(mhp);
 666         return ERR_PTR(err);
 667 }
 668
 669 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
 670 {
 671         struct ib_phys_buf bl;
 672         u64 kva;
 673         struct ib_mr *ibmr;
 674
 675         PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
 676
 677         /*
 678          * T3 only supports 32 bits of size.
 679          */
 680         bl.size = 0xffffffff;
 681         bl.addr = 0;
 682         kva = 0;
 683         ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
 684         return ibmr;
 685 }
 686
 687 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
 688 {
 689         struct iwch_dev *rhp;
 690         struct iwch_pd *php;
 691         struct iwch_mw *mhp;
 692         u32 mmid;
 693         u32 stag = 0;
 694         int ret;
 695
 696         php = to_iwch_pd(pd);
 697         rhp = php->rhp;
 698         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 699         if (!mhp)
 700                 return ERR_PTR(-ENOMEM);
 701         ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
 702         if (ret) {
 703                 kfree(mhp);
 704                 return ERR_PTR(ret);
 705         }
 706         mhp->rhp = rhp;
 707         mhp->attr.pdid = php->pdid;
 708         mhp->attr.type = TPT_MW;
 709         mhp->attr.stag = stag;
 710         mmid = (stag) >> 8;
 711         insert_handle(rhp, &rhp->mmidr, mhp, mmid);
 712         PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
 713         return &(mhp->ibmw);
 714 }
 715
 716 static int iwch_dealloc_mw(struct ib_mw *mw)
 717 {
 718         struct iwch_dev *rhp;
 719         struct iwch_mw *mhp;
 720         u32 mmid;
 721
 722         mhp = to_iwch_mw(mw);
 723         rhp = mhp->rhp;
 724         mmid = (mw->rkey) >> 8;
 725         cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
 726         remove_handle(rhp, &rhp->mmidr, mmid);
 727         kfree(mhp);
 728         PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
 729         return 0;
 730 }
 731
 732 static int iwch_destroy_qp(struct ib_qp *ib_qp)
 733 {
 734         struct iwch_dev *rhp;
 735         struct iwch_qp *qhp;
 736         struct iwch_qp_attributes attrs;
 737         struct iwch_ucontext *ucontext;
 738
 739         qhp = to_iwch_qp(ib_qp);
 740         rhp = qhp->rhp;
 741
 742         attrs.next_state = IWCH_QP_STATE_ERROR;
 743         iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
 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         if (attrs->cap.max_inline_data > T3_MAX_INLINE)
 798                 return ERR_PTR(-EINVAL);
 799
 800         /*
 801          * NOTE: The SQ and total WQ sizes don't need to be
 802          * a power of two.  However, all the code assumes
 803          * they are. EG: Q_FREECNT() and friends.
 804          */
 805         sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
 806         wqsize = roundup_pow_of_two(rqsize + sqsize);
 807         PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
 808              wqsize, sqsize, rqsize);
 809         qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
 810         if (!qhp)
 811                 return ERR_PTR(-ENOMEM);
 812         qhp->wq.size_log2 = ilog2(wqsize);
 813         qhp->wq.rq_size_log2 = ilog2(rqsize);
 814         qhp->wq.sq_size_log2 = ilog2(sqsize);
 815         ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
 816         if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
 817                            ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
 818                 kfree(qhp);
 819                 return ERR_PTR(-ENOMEM);
 820         }
 821         attrs->cap.max_recv_wr = rqsize - 1;
 822         attrs->cap.max_send_wr = sqsize;
 823         qhp->rhp = rhp;
 824         qhp->attr.pd = php->pdid;
 825         qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
 826         qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
 827         qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
 828         qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
 829         qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
 830         qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
 831         qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
 832         qhp->attr.state = IWCH_QP_STATE_IDLE;
 833         qhp->attr.next_state = IWCH_QP_STATE_IDLE;
 834
 835         /*
 836          * XXX - These don't get passed in from the openib user
 837          * at create time.  The CM sets them via a QP modify.
 838          * Need to fix...  I think the CM should
 839          */
 840         qhp->attr.enable_rdma_read = 1;
 841         qhp->attr.enable_rdma_write = 1;
 842         qhp->attr.enable_bind = 1;
 843         qhp->attr.max_ord = 1;
 844         qhp->attr.max_ird = 1;
 845
 846         spin_lock_init(&qhp->lock);
 847         init_waitqueue_head(&qhp->wait);
 848         atomic_set(&qhp->refcnt, 1);
 849         insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
 850
 851         if (udata) {
 852
 853                 struct iwch_mm_entry *mm1, *mm2;
 854
 855                 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
 856                 if (!mm1) {
 857                         iwch_destroy_qp(&qhp->ibqp);
 858                         return ERR_PTR(-ENOMEM);
 859                 }
 860
 861                 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
 862                 if (!mm2) {
 863                         kfree(mm1);
 864                         iwch_destroy_qp(&qhp->ibqp);
 865                         return ERR_PTR(-ENOMEM);
 866                 }
 867
 868                 uresp.qpid = qhp->wq.qpid;
 869                 uresp.size_log2 = qhp->wq.size_log2;
 870                 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
 871                 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
 872                 spin_lock(&ucontext->mmap_lock);
 873                 uresp.key = ucontext->key;
 874                 ucontext->key += PAGE_SIZE;
 875                 uresp.db_key = ucontext->key;
 876                 ucontext->key += PAGE_SIZE;
 877                 spin_unlock(&ucontext->mmap_lock);
 878                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
 879                         kfree(mm1);
 880                         kfree(mm2);
 881                         iwch_destroy_qp(&qhp->ibqp);
 882                         return ERR_PTR(-EFAULT);
 883                 }
 884                 mm1->key = uresp.key;
 885                 mm1->addr = virt_to_phys(qhp->wq.queue);
 886                 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
 887                 insert_mmap(ucontext, mm1);
 888                 mm2->key = uresp.db_key;
 889                 mm2->addr = qhp->wq.udb & PAGE_MASK;
 890                 mm2->len = PAGE_SIZE;
 891                 insert_mmap(ucontext, mm2);
 892         }
 893         qhp->ibqp.qp_num = qhp->wq.qpid;
 894         init_timer(&(qhp->timer));
 895         PDBG("%s sq_num_entries %d, rq_num_entries %d "
 896              "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
 897              __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
 898              qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
 899              1 << qhp->wq.size_log2);
 900         return &qhp->ibqp;
 901 }
 902
 903 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 904                       int attr_mask, struct ib_udata *udata)
 905 {
 906         struct iwch_dev *rhp;
 907         struct iwch_qp *qhp;
 908         enum iwch_qp_attr_mask mask = 0;
 909         struct iwch_qp_attributes attrs;
 910
 911         PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
 912
 913         /* iwarp does not support the RTR state */
 914         if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
 915                 attr_mask &= ~IB_QP_STATE;
 916
 917         /* Make sure we still have something left to do */
 918         if (!attr_mask)
 919                 return 0;
 920
 921         memset(&attrs, 0, sizeof attrs);
 922         qhp = to_iwch_qp(ibqp);
 923         rhp = qhp->rhp;
 924
 925         attrs.next_state = iwch_convert_state(attr->qp_state);
 926         attrs.enable_rdma_read = (attr->qp_access_flags &
 927                                IB_ACCESS_REMOTE_READ) ?  1 : 0;
 928         attrs.enable_rdma_write = (attr->qp_access_flags &
 929                                 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
 930         attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
 931
 932
 933         mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
 934         mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
 935                         (IWCH_QP_ATTR_ENABLE_RDMA_READ |
 936                          IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
 937                          IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
 938
 939         return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
 940 }
 941
 942 void iwch_qp_add_ref(struct ib_qp *qp)
 943 {
 944         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 945         atomic_inc(&(to_iwch_qp(qp)->refcnt));
 946 }
 947
 948 void iwch_qp_rem_ref(struct ib_qp *qp)
 949 {
 950         PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
 951         if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
 952                 wake_up(&(to_iwch_qp(qp)->wait));
 953 }
 954
 955 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
 956 {
 957         PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
 958         return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
 959 }
 960
 961
 962 static int iwch_query_pkey(struct ib_device *ibdev,
 963                            u8 port, u16 index, u16 * pkey)
 964 {
 965         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 966         *pkey = 0;
 967         return 0;
 968 }
 969
 970 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
 971                           int index, union ib_gid *gid)
 972 {
 973         struct iwch_dev *dev;
 974
 975         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 976                __FUNCTION__, ibdev, port, index, gid);
 977         dev = to_iwch_dev(ibdev);
 978         BUG_ON(port == 0 || port > 2);
 979         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 980         memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
 981         return 0;
 982 }
 983
 984 static int iwch_query_device(struct ib_device *ibdev,
 985                              struct ib_device_attr *props)
 986 {
 987
 988         struct iwch_dev *dev;
 989         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
 990
 991         dev = to_iwch_dev(ibdev);
 992         memset(props, 0, sizeof *props);
 993         memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
 994         props->device_cap_flags = dev->device_cap_flags;
 995         props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
 996         props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
 997         props->max_mr_size = ~0ull;
 998         props->max_qp = dev->attr.max_qps;
 999         props->max_qp_wr = dev->attr.max_wrs;
1000         props->max_sge = dev->attr.max_sge_per_wr;
1001         props->max_sge_rd = 1;
1002         props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1003         props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1004         props->max_cq = dev->attr.max_cqs;
1005         props->max_cqe = dev->attr.max_cqes_per_cq;
1006         props->max_mr = dev->attr.max_mem_regs;
1007         props->max_pd = dev->attr.max_pds;
1008         props->local_ca_ack_delay = 0;
1009
1010         return 0;
1011 }
1012
1013 static int iwch_query_port(struct ib_device *ibdev,
1014                            u8 port, struct ib_port_attr *props)
1015 {
1016         PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
1017         props->max_mtu = IB_MTU_4096;
1018         props->lid = 0;
1019         props->lmc = 0;
1020         props->sm_lid = 0;
1021         props->sm_sl = 0;
1022         props->state = IB_PORT_ACTIVE;
1023         props->phys_state = 0;
1024         props->port_cap_flags =
1025             IB_PORT_CM_SUP |
1026             IB_PORT_SNMP_TUNNEL_SUP |
1027             IB_PORT_REINIT_SUP |
1028             IB_PORT_DEVICE_MGMT_SUP |
1029             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1030         props->gid_tbl_len = 1;
1031         props->pkey_tbl_len = 1;
1032         props->qkey_viol_cntr = 0;
1033         props->active_width = 2;
1034         props->active_speed = 2;
1035         props->max_msg_sz = -1;
1036
1037         return 0;
1038 }
1039
1040 static ssize_t show_rev(struct class_device *cdev, char *buf)
1041 {
1042         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1043                                             ibdev.class_dev);
1044         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1045         return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1046 }
1047
1048 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1049 {
1050         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1051                                             ibdev.class_dev);
1052         struct ethtool_drvinfo info;
1053         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1054
1055         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1056         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1057         return sprintf(buf, "%s\n", info.fw_version);
1058 }
1059
1060 static ssize_t show_hca(struct class_device *cdev, char *buf)
1061 {
1062         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1063                                             ibdev.class_dev);
1064         struct ethtool_drvinfo info;
1065         struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1066
1067         PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1068         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1069         return sprintf(buf, "%s\n", info.driver);
1070 }
1071
1072 static ssize_t show_board(struct class_device *cdev, char *buf)
1073 {
1074         struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1075                                             ibdev.class_dev);
1076         PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1077         return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1078                                        dev->rdev.rnic_info.pdev->device);
1079 }
1080
1081 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1082 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1083 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1084 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1085
1086 static struct class_device_attribute *iwch_class_attributes[] = {
1087         &class_device_attr_hw_rev,
1088         &class_device_attr_fw_ver,
1089         &class_device_attr_hca_type,
1090         &class_device_attr_board_id
1091 };
1092
1093 int iwch_register_device(struct iwch_dev *dev)
1094 {
1095         int ret;
1096         int i;
1097
1098         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1099         strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1100         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1101         memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1102         dev->ibdev.owner = THIS_MODULE;
1103         dev->device_cap_flags =
1104             (IB_DEVICE_ZERO_STAG |
1105              IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1106
1107         dev->ibdev.uverbs_cmd_mask =
1108             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1109             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1110             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1111             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1112             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1113             (1ull << IB_USER_VERBS_CMD_REG_MR) |
1114             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1115             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1116             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1117             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1118             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1119             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1120             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1121             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1122             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1123             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1124             (1ull << IB_USER_VERBS_CMD_POST_RECV);
1125         dev->ibdev.node_type = RDMA_NODE_RNIC;
1126         memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1127         dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1128         dev->ibdev.num_comp_vectors = 1;
1129         dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1130         dev->ibdev.query_device = iwch_query_device;
1131         dev->ibdev.query_port = iwch_query_port;
1132         dev->ibdev.modify_port = iwch_modify_port;
1133         dev->ibdev.query_pkey = iwch_query_pkey;
1134         dev->ibdev.query_gid = iwch_query_gid;
1135         dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1136         dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1137         dev->ibdev.mmap = iwch_mmap;
1138         dev->ibdev.alloc_pd = iwch_allocate_pd;
1139         dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1140         dev->ibdev.create_ah = iwch_ah_create;
1141         dev->ibdev.destroy_ah = iwch_ah_destroy;
1142         dev->ibdev.create_qp = iwch_create_qp;
1143         dev->ibdev.modify_qp = iwch_ib_modify_qp;
1144         dev->ibdev.destroy_qp = iwch_destroy_qp;
1145         dev->ibdev.create_cq = iwch_create_cq;
1146         dev->ibdev.destroy_cq = iwch_destroy_cq;
1147         dev->ibdev.resize_cq = iwch_resize_cq;
1148         dev->ibdev.poll_cq = iwch_poll_cq;
1149         dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1150         dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1151         dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1152         dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1153         dev->ibdev.dereg_mr = iwch_dereg_mr;
1154         dev->ibdev.alloc_mw = iwch_alloc_mw;
1155         dev->ibdev.bind_mw = iwch_bind_mw;
1156         dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1157
1158         dev->ibdev.attach_mcast = iwch_multicast_attach;
1159         dev->ibdev.detach_mcast = iwch_multicast_detach;
1160         dev->ibdev.process_mad = iwch_process_mad;
1161
1162         dev->ibdev.req_notify_cq = iwch_arm_cq;
1163         dev->ibdev.post_send = iwch_post_send;
1164         dev->ibdev.post_recv = iwch_post_receive;
1165
1166
1167         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1168         if (!dev->ibdev.iwcm)
1169                 return -ENOMEM;
1170
1171         dev->ibdev.iwcm->connect = iwch_connect;
1172         dev->ibdev.iwcm->accept = iwch_accept_cr;
1173         dev->ibdev.iwcm->reject = iwch_reject_cr;
1174         dev->ibdev.iwcm->create_listen = iwch_create_listen;
1175         dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1176         dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1177         dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1178         dev->ibdev.iwcm->get_qp = iwch_get_qp;
1179
1180         ret = ib_register_device(&dev->ibdev);
1181         if (ret)
1182                 goto bail1;
1183
1184         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1185                 ret = class_device_create_file(&dev->ibdev.class_dev,
1186                                                iwch_class_attributes[i]);
1187                 if (ret) {
1188                         goto bail2;
1189                 }
1190         }
1191         return 0;
1192 bail2:
1193         ib_unregister_device(&dev->ibdev);
1194 bail1:
1195         return ret;
1196 }
1197
1198 void iwch_unregister_device(struct iwch_dev *dev)
1199 {
1200         int i;
1201
1202         PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1203         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1204                 class_device_remove_file(&dev->ibdev.class_dev,
1205                                          iwch_class_attributes[i]);
1206         ib_unregister_device(&dev->ibdev);
1207         return;
1208 }