drivers/infiniband/hw/i40iw/i40iw_verbs.c

   1 /*******************************************************************************
   2 *
   3 * Copyright (c) 2015-2016 Intel Corporation.  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 * OpenFabrics.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 *******************************************************************************/
  34
  35 #include <linux/module.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/random.h>
  38 #include <linux/highmem.h>
  39 #include <linux/time.h>
  40 #include <asm/byteorder.h>
  41 #include <net/ip.h>
  42 #include <rdma/ib_verbs.h>
  43 #include <rdma/iw_cm.h>
  44 #include <rdma/ib_user_verbs.h>
  45 #include <rdma/ib_umem.h>
  46 #include "i40iw.h"
  47
  48 /**
  49  * i40iw_query_device - get device attributes
  50  * @ibdev: device pointer from stack
  51  * @props: returning device attributes
  52  * @udata: user data
  53  */
  54 static int i40iw_query_device(struct ib_device *ibdev,
  55                               struct ib_device_attr *props,
  56                               struct ib_udata *udata)
  57 {
  58         struct i40iw_device *iwdev = to_iwdev(ibdev);
  59
  60         if (udata->inlen || udata->outlen)
  61                 return -EINVAL;
  62         memset(props, 0, sizeof(*props));
  63         ether_addr_copy((u8 *)&props->sys_image_guid, iwdev->netdev->dev_addr);
  64         props->fw_ver = I40IW_FW_VERSION;
  65         props->device_cap_flags = iwdev->device_cap_flags;
  66         props->vendor_id = iwdev->ldev->pcidev->vendor;
  67         props->vendor_part_id = iwdev->ldev->pcidev->device;
  68         props->hw_ver = (u32)iwdev->sc_dev.hw_rev;
  69         props->max_mr_size = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
  70         props->max_qp = iwdev->max_qp;
  71         props->max_qp_wr = (I40IW_MAX_WQ_ENTRIES >> 2) - 1;
  72         props->max_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
  73         props->max_cq = iwdev->max_cq;
  74         props->max_cqe = iwdev->max_cqe;
  75         props->max_mr = iwdev->max_mr;
  76         props->max_pd = iwdev->max_pd;
  77         props->max_sge_rd = I40IW_MAX_SGE_RD;
  78         props->max_qp_rd_atom = I40IW_MAX_IRD_SIZE;
  79         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
  80         props->atomic_cap = IB_ATOMIC_NONE;
  81         props->max_map_per_fmr = 1;
  82         props->max_fast_reg_page_list_len = I40IW_MAX_PAGES_PER_FMR;
  83         return 0;
  84 }
  85
  86 /**
  87  * i40iw_query_port - get port attrubutes
  88  * @ibdev: device pointer from stack
  89  * @port: port number for query
  90  * @props: returning device attributes
  91  */
  92 static int i40iw_query_port(struct ib_device *ibdev,
  93                             u8 port,
  94                             struct ib_port_attr *props)
  95 {
  96         struct i40iw_device *iwdev = to_iwdev(ibdev);
  97         struct net_device *netdev = iwdev->netdev;
  98
  99         memset(props, 0, sizeof(*props));
 100
 101         props->max_mtu = IB_MTU_4096;
 102         if (netdev->mtu >= 4096)
 103                 props->active_mtu = IB_MTU_4096;
 104         else if (netdev->mtu >= 2048)
 105                 props->active_mtu = IB_MTU_2048;
 106         else if (netdev->mtu >= 1024)
 107                 props->active_mtu = IB_MTU_1024;
 108         else if (netdev->mtu >= 512)
 109                 props->active_mtu = IB_MTU_512;
 110         else
 111                 props->active_mtu = IB_MTU_256;
 112
 113         props->lid = 1;
 114         if (netif_carrier_ok(iwdev->netdev))
 115                 props->state = IB_PORT_ACTIVE;
 116         else
 117                 props->state = IB_PORT_DOWN;
 118         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 119                 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 120         props->gid_tbl_len = 1;
 121         props->pkey_tbl_len = 1;
 122         props->active_width = IB_WIDTH_4X;
 123         props->active_speed = 1;
 124         props->max_msg_sz = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
 125         return 0;
 126 }
 127
 128 /**
 129  * i40iw_alloc_ucontext - Allocate the user context data structure
 130  * @ibdev: device pointer from stack
 131  * @udata: user data
 132  *
 133  * This keeps track of all objects associated with a particular
 134  * user-mode client.
 135  */
 136 static struct ib_ucontext *i40iw_alloc_ucontext(struct ib_device *ibdev,
 137                                                 struct ib_udata *udata)
 138 {
 139         struct i40iw_device *iwdev = to_iwdev(ibdev);
 140         struct i40iw_alloc_ucontext_req req;
 141         struct i40iw_alloc_ucontext_resp uresp;
 142         struct i40iw_ucontext *ucontext;
 143
 144         if (ib_copy_from_udata(&req, udata, sizeof(req)))
 145                 return ERR_PTR(-EINVAL);
 146
 147         if (req.userspace_ver != I40IW_ABI_USERSPACE_VER) {
 148                 i40iw_pr_err("Invalid userspace driver version detected. Detected version %d, should be %d\n",
 149                              req.userspace_ver, I40IW_ABI_USERSPACE_VER);
 150                 return ERR_PTR(-EINVAL);
 151         }
 152
 153         memset(&uresp, 0, sizeof(uresp));
 154         uresp.max_qps = iwdev->max_qp;
 155         uresp.max_pds = iwdev->max_pd;
 156         uresp.wq_size = iwdev->max_qp_wr * 2;
 157         uresp.kernel_ver = I40IW_ABI_KERNEL_VER;
 158
 159         ucontext = kzalloc(sizeof(*ucontext), GFP_KERNEL);
 160         if (!ucontext)
 161                 return ERR_PTR(-ENOMEM);
 162
 163         ucontext->iwdev = iwdev;
 164
 165         if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 166                 kfree(ucontext);
 167                 return ERR_PTR(-EFAULT);
 168         }
 169
 170         INIT_LIST_HEAD(&ucontext->cq_reg_mem_list);
 171         spin_lock_init(&ucontext->cq_reg_mem_list_lock);
 172         INIT_LIST_HEAD(&ucontext->qp_reg_mem_list);
 173         spin_lock_init(&ucontext->qp_reg_mem_list_lock);
 174
 175         return &ucontext->ibucontext;
 176 }
 177
 178 /**
 179  * i40iw_dealloc_ucontext - deallocate the user context data structure
 180  * @context: user context created during alloc
 181  */
 182 static int i40iw_dealloc_ucontext(struct ib_ucontext *context)
 183 {
 184         struct i40iw_ucontext *ucontext = to_ucontext(context);
 185         unsigned long flags;
 186
 187         spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
 188         if (!list_empty(&ucontext->cq_reg_mem_list)) {
 189                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 190                 return -EBUSY;
 191         }
 192         spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 193         spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
 194         if (!list_empty(&ucontext->qp_reg_mem_list)) {
 195                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
 196                 return -EBUSY;
 197         }
 198         spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
 199
 200         kfree(ucontext);
 201         return 0;
 202 }
 203
 204 /**
 205  * i40iw_mmap - user memory map
 206  * @context: context created during alloc
 207  * @vma: kernel info for user memory map
 208  */
 209 static int i40iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 210 {
 211         struct i40iw_ucontext *ucontext;
 212         u64 db_addr_offset;
 213         u64 push_offset;
 214
 215         ucontext = to_ucontext(context);
 216         if (ucontext->iwdev->sc_dev.is_pf) {
 217                 db_addr_offset = I40IW_DB_ADDR_OFFSET;
 218                 push_offset = I40IW_PUSH_OFFSET;
 219                 if (vma->vm_pgoff)
 220                         vma->vm_pgoff += I40IW_PF_FIRST_PUSH_PAGE_INDEX - 1;
 221         } else {
 222                 db_addr_offset = I40IW_VF_DB_ADDR_OFFSET;
 223                 push_offset = I40IW_VF_PUSH_OFFSET;
 224                 if (vma->vm_pgoff)
 225                         vma->vm_pgoff += I40IW_VF_FIRST_PUSH_PAGE_INDEX - 1;
 226         }
 227
 228         vma->vm_pgoff += db_addr_offset >> PAGE_SHIFT;
 229
 230         if (vma->vm_pgoff == (db_addr_offset >> PAGE_SHIFT)) {
 231                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 232                 vma->vm_private_data = ucontext;
 233         } else {
 234                 if ((vma->vm_pgoff - (push_offset >> PAGE_SHIFT)) % 2)
 235                         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 236                 else
 237                         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 238         }
 239
 240         if (io_remap_pfn_range(vma, vma->vm_start,
 241                                vma->vm_pgoff + (pci_resource_start(ucontext->iwdev->ldev->pcidev, 0) >> PAGE_SHIFT),
 242                                PAGE_SIZE, vma->vm_page_prot))
 243                 return -EAGAIN;
 244
 245         return 0;
 246 }
 247
 248 /**
 249  * i40iw_alloc_push_page - allocate a push page for qp
 250  * @iwdev: iwarp device
 251  * @qp: hardware control qp
 252  */
 253 static void i40iw_alloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
 254 {
 255         struct i40iw_cqp_request *cqp_request;
 256         struct cqp_commands_info *cqp_info;
 257         enum i40iw_status_code status;
 258
 259         if (qp->push_idx != I40IW_INVALID_PUSH_PAGE_INDEX)
 260                 return;
 261
 262         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 263         if (!cqp_request)
 264                 return;
 265
 266         atomic_inc(&cqp_request->refcount);
 267
 268         cqp_info = &cqp_request->info;
 269         cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
 270         cqp_info->post_sq = 1;
 271
 272         cqp_info->in.u.manage_push_page.info.qs_handle = qp->qs_handle;
 273         cqp_info->in.u.manage_push_page.info.free_page = 0;
 274         cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
 275         cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
 276
 277         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 278         if (!status)
 279                 qp->push_idx = cqp_request->compl_info.op_ret_val;
 280         else
 281                 i40iw_pr_err("CQP-OP Push page fail");
 282         i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
 283 }
 284
 285 /**
 286  * i40iw_dealloc_push_page - free a push page for qp
 287  * @iwdev: iwarp device
 288  * @qp: hardware control qp
 289  */
 290 static void i40iw_dealloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
 291 {
 292         struct i40iw_cqp_request *cqp_request;
 293         struct cqp_commands_info *cqp_info;
 294         enum i40iw_status_code status;
 295
 296         if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX)
 297                 return;
 298
 299         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 300         if (!cqp_request)
 301                 return;
 302
 303         cqp_info = &cqp_request->info;
 304         cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
 305         cqp_info->post_sq = 1;
 306
 307         cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx;
 308         cqp_info->in.u.manage_push_page.info.qs_handle = qp->qs_handle;
 309         cqp_info->in.u.manage_push_page.info.free_page = 1;
 310         cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
 311         cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
 312
 313         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 314         if (!status)
 315                 qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
 316         else
 317                 i40iw_pr_err("CQP-OP Push page fail");
 318 }
 319
 320 /**
 321  * i40iw_alloc_pd - allocate protection domain
 322  * @ibdev: device pointer from stack
 323  * @context: user context created during alloc
 324  * @udata: user data
 325  */
 326 static struct ib_pd *i40iw_alloc_pd(struct ib_device *ibdev,
 327                                     struct ib_ucontext *context,
 328                                     struct ib_udata *udata)
 329 {
 330         struct i40iw_pd *iwpd;
 331         struct i40iw_device *iwdev = to_iwdev(ibdev);
 332         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 333         struct i40iw_alloc_pd_resp uresp;
 334         struct i40iw_sc_pd *sc_pd;
 335         u32 pd_id = 0;
 336         int err;
 337
 338         err = i40iw_alloc_resource(iwdev, iwdev->allocated_pds,
 339                                    iwdev->max_pd, &pd_id, &iwdev->next_pd);
 340         if (err) {
 341                 i40iw_pr_err("alloc resource failed\n");
 342                 return ERR_PTR(err);
 343         }
 344
 345         iwpd = kzalloc(sizeof(*iwpd), GFP_KERNEL);
 346         if (!iwpd) {
 347                 err = -ENOMEM;
 348                 goto free_res;
 349         }
 350
 351         sc_pd = &iwpd->sc_pd;
 352         dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id);
 353
 354         if (context) {
 355                 memset(&uresp, 0, sizeof(uresp));
 356                 uresp.pd_id = pd_id;
 357                 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 358                         err = -EFAULT;
 359                         goto error;
 360                 }
 361         }
 362
 363         i40iw_add_pdusecount(iwpd);
 364         return &iwpd->ibpd;
 365 error:
 366         kfree(iwpd);
 367 free_res:
 368         i40iw_free_resource(iwdev, iwdev->allocated_pds, pd_id);
 369         return ERR_PTR(err);
 370 }
 371
 372 /**
 373  * i40iw_dealloc_pd - deallocate pd
 374  * @ibpd: ptr of pd to be deallocated
 375  */
 376 static int i40iw_dealloc_pd(struct ib_pd *ibpd)
 377 {
 378         struct i40iw_pd *iwpd = to_iwpd(ibpd);
 379         struct i40iw_device *iwdev = to_iwdev(ibpd->device);
 380
 381         i40iw_rem_pdusecount(iwpd, iwdev);
 382         return 0;
 383 }
 384
 385 /**
 386  * i40iw_qp_roundup - return round up qp ring size
 387  * @wr_ring_size: ring size to round up
 388  */
 389 static int i40iw_qp_roundup(u32 wr_ring_size)
 390 {
 391         int scount = 1;
 392
 393         if (wr_ring_size < I40IWQP_SW_MIN_WQSIZE)
 394                 wr_ring_size = I40IWQP_SW_MIN_WQSIZE;
 395
 396         for (wr_ring_size--; scount <= 16; scount *= 2)
 397                 wr_ring_size |= wr_ring_size >> scount;
 398         return ++wr_ring_size;
 399 }
 400
 401 /**
 402  * i40iw_get_pbl - Retrieve pbl from a list given a virtual
 403  * address
 404  * @va: user virtual address
 405  * @pbl_list: pbl list to search in (QP's or CQ's)
 406  */
 407 static struct i40iw_pbl *i40iw_get_pbl(unsigned long va,
 408                                        struct list_head *pbl_list)
 409 {
 410         struct i40iw_pbl *iwpbl;
 411
 412         list_for_each_entry(iwpbl, pbl_list, list) {
 413                 if (iwpbl->user_base == va) {
 414                         list_del(&iwpbl->list);
 415                         return iwpbl;
 416                 }
 417         }
 418         return NULL;
 419 }
 420
 421 /**
 422  * i40iw_free_qp_resources - free up memory resources for qp
 423  * @iwdev: iwarp device
 424  * @iwqp: qp ptr (user or kernel)
 425  * @qp_num: qp number assigned
 426  */
 427 void i40iw_free_qp_resources(struct i40iw_device *iwdev,
 428                              struct i40iw_qp *iwqp,
 429                              u32 qp_num)
 430 {
 431         i40iw_dealloc_push_page(iwdev, &iwqp->sc_qp);
 432         if (qp_num)
 433                 i40iw_free_resource(iwdev, iwdev->allocated_qps, qp_num);
 434         i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->q2_ctx_mem);
 435         i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->kqp.dma_mem);
 436         kfree(iwqp->kqp.wrid_mem);
 437         iwqp->kqp.wrid_mem = NULL;
 438         kfree(iwqp->allocated_buffer);
 439 }
 440
 441 /**
 442  * i40iw_clean_cqes - clean cq entries for qp
 443  * @iwqp: qp ptr (user or kernel)
 444  * @iwcq: cq ptr
 445  */
 446 static void i40iw_clean_cqes(struct i40iw_qp *iwqp, struct i40iw_cq *iwcq)
 447 {
 448         struct i40iw_cq_uk *ukcq = &iwcq->sc_cq.cq_uk;
 449
 450         ukcq->ops.iw_cq_clean(&iwqp->sc_qp.qp_uk, ukcq);
 451 }
 452
 453 /**
 454  * i40iw_destroy_qp - destroy qp
 455  * @ibqp: qp's ib pointer also to get to device's qp address
 456  */
 457 static int i40iw_destroy_qp(struct ib_qp *ibqp)
 458 {
 459         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 460
 461         iwqp->destroyed = 1;
 462
 463         if (iwqp->ibqp_state >= IB_QPS_INIT && iwqp->ibqp_state < IB_QPS_RTS)
 464                 i40iw_next_iw_state(iwqp, I40IW_QP_STATE_ERROR, 0, 0, 0);
 465
 466         if (!iwqp->user_mode) {
 467                 if (iwqp->iwscq) {
 468                         i40iw_clean_cqes(iwqp, iwqp->iwscq);
 469                         if (iwqp->iwrcq != iwqp->iwscq)
 470                                 i40iw_clean_cqes(iwqp, iwqp->iwrcq);
 471                 }
 472         }
 473
 474         i40iw_rem_ref(&iwqp->ibqp);
 475         return 0;
 476 }
 477
 478 /**
 479  * i40iw_setup_virt_qp - setup for allocation of virtual qp
 480  * @dev: iwarp device
 481  * @qp: qp ptr
 482  * @init_info: initialize info to return
 483  */
 484 static int i40iw_setup_virt_qp(struct i40iw_device *iwdev,
 485                                struct i40iw_qp *iwqp,
 486                                struct i40iw_qp_init_info *init_info)
 487 {
 488         struct i40iw_pbl *iwpbl = iwqp->iwpbl;
 489         struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
 490
 491         iwqp->page = qpmr->sq_page;
 492         init_info->shadow_area_pa = cpu_to_le64(qpmr->shadow);
 493         if (iwpbl->pbl_allocated) {
 494                 init_info->virtual_map = true;
 495                 init_info->sq_pa = qpmr->sq_pbl.idx;
 496                 init_info->rq_pa = qpmr->rq_pbl.idx;
 497         } else {
 498                 init_info->sq_pa = qpmr->sq_pbl.addr;
 499                 init_info->rq_pa = qpmr->rq_pbl.addr;
 500         }
 501         return 0;
 502 }
 503
 504 /**
 505  * i40iw_setup_kmode_qp - setup initialization for kernel mode qp
 506  * @iwdev: iwarp device
 507  * @iwqp: qp ptr (user or kernel)
 508  * @info: initialize info to return
 509  */
 510 static int i40iw_setup_kmode_qp(struct i40iw_device *iwdev,
 511                                 struct i40iw_qp *iwqp,
 512                                 struct i40iw_qp_init_info *info)
 513 {
 514         struct i40iw_dma_mem *mem = &iwqp->kqp.dma_mem;
 515         u32 sqdepth, rqdepth;
 516         u32 sq_size, rq_size;
 517         u8 sqshift, rqshift;
 518         u32 size;
 519         enum i40iw_status_code status;
 520         struct i40iw_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
 521
 522         sq_size = i40iw_qp_roundup(ukinfo->sq_size + 1);
 523         rq_size = i40iw_qp_roundup(ukinfo->rq_size + 1);
 524
 525         status = i40iw_get_wqe_shift(sq_size, ukinfo->max_sq_frag_cnt, ukinfo->max_inline_data, &sqshift);
 526         if (!status)
 527                 status = i40iw_get_wqe_shift(rq_size, ukinfo->max_rq_frag_cnt, 0, &rqshift);
 528
 529         if (status)
 530                 return -ENOMEM;
 531
 532         sqdepth = sq_size << sqshift;
 533         rqdepth = rq_size << rqshift;
 534
 535         size = sqdepth * sizeof(struct i40iw_sq_uk_wr_trk_info) + (rqdepth << 3);
 536         iwqp->kqp.wrid_mem = kzalloc(size, GFP_KERNEL);
 537
 538         ukinfo->sq_wrtrk_array = (struct i40iw_sq_uk_wr_trk_info *)iwqp->kqp.wrid_mem;
 539         if (!ukinfo->sq_wrtrk_array)
 540                 return -ENOMEM;
 541
 542         ukinfo->rq_wrid_array = (u64 *)&ukinfo->sq_wrtrk_array[sqdepth];
 543
 544         size = (sqdepth + rqdepth) * I40IW_QP_WQE_MIN_SIZE;
 545         size += (I40IW_SHADOW_AREA_SIZE << 3);
 546
 547         status = i40iw_allocate_dma_mem(iwdev->sc_dev.hw, mem, size, 256);
 548         if (status) {
 549                 kfree(ukinfo->sq_wrtrk_array);
 550                 ukinfo->sq_wrtrk_array = NULL;
 551                 return -ENOMEM;
 552         }
 553
 554         ukinfo->sq = mem->va;
 555         info->sq_pa = mem->pa;
 556
 557         ukinfo->rq = &ukinfo->sq[sqdepth];
 558         info->rq_pa = info->sq_pa + (sqdepth * I40IW_QP_WQE_MIN_SIZE);
 559
 560         ukinfo->shadow_area = ukinfo->rq[rqdepth].elem;
 561         info->shadow_area_pa = info->rq_pa + (rqdepth * I40IW_QP_WQE_MIN_SIZE);
 562
 563         ukinfo->sq_size = sq_size;
 564         ukinfo->rq_size = rq_size;
 565         ukinfo->qp_id = iwqp->ibqp.qp_num;
 566         return 0;
 567 }
 568
 569 /**
 570  * i40iw_create_qp - create qp
 571  * @ibpd: ptr of pd
 572  * @init_attr: attributes for qp
 573  * @udata: user data for create qp
 574  */
 575 static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
 576                                      struct ib_qp_init_attr *init_attr,
 577                                      struct ib_udata *udata)
 578 {
 579         struct i40iw_pd *iwpd = to_iwpd(ibpd);
 580         struct i40iw_device *iwdev = to_iwdev(ibpd->device);
 581         struct i40iw_cqp *iwcqp = &iwdev->cqp;
 582         struct i40iw_qp *iwqp;
 583         struct i40iw_ucontext *ucontext;
 584         struct i40iw_create_qp_req req;
 585         struct i40iw_create_qp_resp uresp;
 586         u32 qp_num = 0;
 587         void *mem;
 588         enum i40iw_status_code ret;
 589         int err_code;
 590         int sq_size;
 591         int rq_size;
 592         struct i40iw_sc_qp *qp;
 593         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 594         struct i40iw_qp_init_info init_info;
 595         struct i40iw_create_qp_info *qp_info;
 596         struct i40iw_cqp_request *cqp_request;
 597         struct cqp_commands_info *cqp_info;
 598
 599         struct i40iw_qp_host_ctx_info *ctx_info;
 600         struct i40iwarp_offload_info *iwarp_info;
 601         unsigned long flags;
 602
 603         if (init_attr->create_flags)
 604                 return ERR_PTR(-EINVAL);
 605         if (init_attr->cap.max_inline_data > I40IW_MAX_INLINE_DATA_SIZE)
 606                 init_attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
 607
 608         if (init_attr->cap.max_send_sge > I40IW_MAX_WQ_FRAGMENT_COUNT)
 609                 init_attr->cap.max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
 610
 611         memset(&init_info, 0, sizeof(init_info));
 612
 613         sq_size = init_attr->cap.max_send_wr;
 614         rq_size = init_attr->cap.max_recv_wr;
 615
 616         init_info.qp_uk_init_info.sq_size = sq_size;
 617         init_info.qp_uk_init_info.rq_size = rq_size;
 618         init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge;
 619         init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge;
 620         init_info.qp_uk_init_info.max_inline_data = init_attr->cap.max_inline_data;
 621
 622         mem = kzalloc(sizeof(*iwqp), GFP_KERNEL);
 623         if (!mem)
 624                 return ERR_PTR(-ENOMEM);
 625
 626         iwqp = (struct i40iw_qp *)mem;
 627         qp = &iwqp->sc_qp;
 628         qp->back_qp = (void *)iwqp;
 629         qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
 630
 631         iwqp->ctx_info.iwarp_info = &iwqp->iwarp_info;
 632
 633         if (i40iw_allocate_dma_mem(dev->hw,
 634                                    &iwqp->q2_ctx_mem,
 635                                    I40IW_Q2_BUFFER_SIZE + I40IW_QP_CTX_SIZE,
 636                                    256)) {
 637                 i40iw_pr_err("dma_mem failed\n");
 638                 err_code = -ENOMEM;
 639                 goto error;
 640         }
 641
 642         init_info.q2 = iwqp->q2_ctx_mem.va;
 643         init_info.q2_pa = iwqp->q2_ctx_mem.pa;
 644
 645         init_info.host_ctx = (void *)init_info.q2 + I40IW_Q2_BUFFER_SIZE;
 646         init_info.host_ctx_pa = init_info.q2_pa + I40IW_Q2_BUFFER_SIZE;
 647
 648         err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_qps, iwdev->max_qp,
 649                                         &qp_num, &iwdev->next_qp);
 650         if (err_code) {
 651                 i40iw_pr_err("qp resource\n");
 652                 goto error;
 653         }
 654
 655         iwqp->allocated_buffer = mem;
 656         iwqp->iwdev = iwdev;
 657         iwqp->iwpd = iwpd;
 658         iwqp->ibqp.qp_num = qp_num;
 659         qp = &iwqp->sc_qp;
 660         iwqp->iwscq = to_iwcq(init_attr->send_cq);
 661         iwqp->iwrcq = to_iwcq(init_attr->recv_cq);
 662
 663         iwqp->host_ctx.va = init_info.host_ctx;
 664         iwqp->host_ctx.pa = init_info.host_ctx_pa;
 665         iwqp->host_ctx.size = I40IW_QP_CTX_SIZE;
 666
 667         init_info.pd = &iwpd->sc_pd;
 668         init_info.qp_uk_init_info.qp_id = iwqp->ibqp.qp_num;
 669         iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp;
 670
 671         if (init_attr->qp_type != IB_QPT_RC) {
 672                 err_code = -EINVAL;
 673                 goto error;
 674         }
 675         if (iwdev->push_mode)
 676                 i40iw_alloc_push_page(iwdev, qp);
 677         if (udata) {
 678                 err_code = ib_copy_from_udata(&req, udata, sizeof(req));
 679                 if (err_code) {
 680                         i40iw_pr_err("ib_copy_from_data\n");
 681                         goto error;
 682                 }
 683                 iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx;
 684                 if (ibpd->uobject && ibpd->uobject->context) {
 685                         iwqp->user_mode = 1;
 686                         ucontext = to_ucontext(ibpd->uobject->context);
 687
 688                         if (req.user_wqe_buffers) {
 689                                 spin_lock_irqsave(
 690                                     &ucontext->qp_reg_mem_list_lock, flags);
 691                                 iwqp->iwpbl = i40iw_get_pbl(
 692                                     (unsigned long)req.user_wqe_buffers,
 693                                     &ucontext->qp_reg_mem_list);
 694                                 spin_unlock_irqrestore(
 695                                     &ucontext->qp_reg_mem_list_lock, flags);
 696
 697                                 if (!iwqp->iwpbl) {
 698                                         err_code = -ENODATA;
 699                                         i40iw_pr_err("no pbl info\n");
 700                                         goto error;
 701                                 }
 702                         }
 703                 }
 704                 err_code = i40iw_setup_virt_qp(iwdev, iwqp, &init_info);
 705         } else {
 706                 err_code = i40iw_setup_kmode_qp(iwdev, iwqp, &init_info);
 707         }
 708
 709         if (err_code) {
 710                 i40iw_pr_err("setup qp failed\n");
 711                 goto error;
 712         }
 713
 714         init_info.type = I40IW_QP_TYPE_IWARP;
 715         ret = dev->iw_priv_qp_ops->qp_init(qp, &init_info);
 716         if (ret) {
 717                 err_code = -EPROTO;
 718                 i40iw_pr_err("qp_init fail\n");
 719                 goto error;
 720         }
 721         ctx_info = &iwqp->ctx_info;
 722         iwarp_info = &iwqp->iwarp_info;
 723         iwarp_info->rd_enable = true;
 724         iwarp_info->wr_rdresp_en = true;
 725         if (!iwqp->user_mode) {
 726                 iwarp_info->fast_reg_en = true;
 727                 iwarp_info->priv_mode_en = true;
 728         }
 729         iwarp_info->ddp_ver = 1;
 730         iwarp_info->rdmap_ver = 1;
 731
 732         ctx_info->iwarp_info_valid = true;
 733         ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
 734         ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
 735         if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX) {
 736                 ctx_info->push_mode_en = false;
 737         } else {
 738                 ctx_info->push_mode_en = true;
 739                 ctx_info->push_idx = qp->push_idx;
 740         }
 741
 742         ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
 743                                              (u64 *)iwqp->host_ctx.va,
 744                                              ctx_info);
 745         ctx_info->iwarp_info_valid = false;
 746         cqp_request = i40iw_get_cqp_request(iwcqp, true);
 747         if (!cqp_request) {
 748                 err_code = -ENOMEM;
 749                 goto error;
 750         }
 751         cqp_info = &cqp_request->info;
 752         qp_info = &cqp_request->info.in.u.qp_create.info;
 753
 754         memset(qp_info, 0, sizeof(*qp_info));
 755
 756         qp_info->cq_num_valid = true;
 757         qp_info->next_iwarp_state = I40IW_QP_STATE_IDLE;
 758
 759         cqp_info->cqp_cmd = OP_QP_CREATE;
 760         cqp_info->post_sq = 1;
 761         cqp_info->in.u.qp_create.qp = qp;
 762         cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
 763         ret = i40iw_handle_cqp_op(iwdev, cqp_request);
 764         if (ret) {
 765                 i40iw_pr_err("CQP-OP QP create fail");
 766                 err_code = -EACCES;
 767                 goto error;
 768         }
 769
 770         i40iw_add_ref(&iwqp->ibqp);
 771         spin_lock_init(&iwqp->lock);
 772         iwqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? 1 : 0;
 773         iwdev->qp_table[qp_num] = iwqp;
 774         i40iw_add_pdusecount(iwqp->iwpd);
 775         if (ibpd->uobject && udata) {
 776                 memset(&uresp, 0, sizeof(uresp));
 777                 uresp.actual_sq_size = sq_size;
 778                 uresp.actual_rq_size = rq_size;
 779                 uresp.qp_id = qp_num;
 780                 uresp.push_idx = qp->push_idx;
 781                 err_code = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
 782                 if (err_code) {
 783                         i40iw_pr_err("copy_to_udata failed\n");
 784                         i40iw_destroy_qp(&iwqp->ibqp);
 785                            /* let the completion of the qp destroy free the qp */
 786                         return ERR_PTR(err_code);
 787                 }
 788         }
 789         init_completion(&iwqp->sq_drained);
 790         init_completion(&iwqp->rq_drained);
 791
 792         return &iwqp->ibqp;
 793 error:
 794         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 795         return ERR_PTR(err_code);
 796 }
 797
 798 /**
 799  * i40iw_query - query qp attributes
 800  * @ibqp: qp pointer
 801  * @attr: attributes pointer
 802  * @attr_mask: Not used
 803  * @init_attr: qp attributes to return
 804  */
 805 static int i40iw_query_qp(struct ib_qp *ibqp,
 806                           struct ib_qp_attr *attr,
 807                           int attr_mask,
 808                           struct ib_qp_init_attr *init_attr)
 809 {
 810         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 811         struct i40iw_sc_qp *qp = &iwqp->sc_qp;
 812
 813         attr->qp_access_flags = 0;
 814         attr->cap.max_send_wr = qp->qp_uk.sq_size;
 815         attr->cap.max_recv_wr = qp->qp_uk.rq_size;
 816         attr->cap.max_recv_sge = 1;
 817         attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
 818         init_attr->event_handler = iwqp->ibqp.event_handler;
 819         init_attr->qp_context = iwqp->ibqp.qp_context;
 820         init_attr->send_cq = iwqp->ibqp.send_cq;
 821         init_attr->recv_cq = iwqp->ibqp.recv_cq;
 822         init_attr->srq = iwqp->ibqp.srq;
 823         init_attr->cap = attr->cap;
 824         return 0;
 825 }
 826
 827 /**
 828  * i40iw_hw_modify_qp - setup cqp for modify qp
 829  * @iwdev: iwarp device
 830  * @iwqp: qp ptr (user or kernel)
 831  * @info: info for modify qp
 832  * @wait: flag to wait or not for modify qp completion
 833  */
 834 void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
 835                         struct i40iw_modify_qp_info *info, bool wait)
 836 {
 837         enum i40iw_status_code status;
 838         struct i40iw_cqp_request *cqp_request;
 839         struct cqp_commands_info *cqp_info;
 840         struct i40iw_modify_qp_info *m_info;
 841
 842         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, wait);
 843         if (!cqp_request)
 844                 return;
 845
 846         cqp_info = &cqp_request->info;
 847         m_info = &cqp_info->in.u.qp_modify.info;
 848         memcpy(m_info, info, sizeof(*m_info));
 849         cqp_info->cqp_cmd = OP_QP_MODIFY;
 850         cqp_info->post_sq = 1;
 851         cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
 852         cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
 853         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 854         if (status)
 855                 i40iw_pr_err("CQP-OP Modify QP fail");
 856 }
 857
 858 /**
 859  * i40iw_modify_qp - modify qp request
 860  * @ibqp: qp's pointer for modify
 861  * @attr: access attributes
 862  * @attr_mask: state mask
 863  * @udata: user data
 864  */
 865 int i40iw_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 866                     int attr_mask, struct ib_udata *udata)
 867 {
 868         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 869         struct i40iw_device *iwdev = iwqp->iwdev;
 870         struct i40iw_qp_host_ctx_info *ctx_info;
 871         struct i40iwarp_offload_info *iwarp_info;
 872         struct i40iw_modify_qp_info info;
 873         u8 issue_modify_qp = 0;
 874         u8 dont_wait = 0;
 875         u32 err;
 876         unsigned long flags;
 877
 878         memset(&info, 0, sizeof(info));
 879         ctx_info = &iwqp->ctx_info;
 880         iwarp_info = &iwqp->iwarp_info;
 881
 882         spin_lock_irqsave(&iwqp->lock, flags);
 883
 884         if (attr_mask & IB_QP_STATE) {
 885                 switch (attr->qp_state) {
 886                 case IB_QPS_INIT:
 887                 case IB_QPS_RTR:
 888                         if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_IDLE) {
 889                                 err = -EINVAL;
 890                                 goto exit;
 891                         }
 892                         if (iwqp->iwarp_state == I40IW_QP_STATE_INVALID) {
 893                                 info.next_iwarp_state = I40IW_QP_STATE_IDLE;
 894                                 issue_modify_qp = 1;
 895                         }
 896                         break;
 897                 case IB_QPS_RTS:
 898                         if ((iwqp->iwarp_state > (u32)I40IW_QP_STATE_RTS) ||
 899                             (!iwqp->cm_id)) {
 900                                 err = -EINVAL;
 901                                 goto exit;
 902                         }
 903
 904                         issue_modify_qp = 1;
 905                         iwqp->hw_tcp_state = I40IW_TCP_STATE_ESTABLISHED;
 906                         iwqp->hte_added = 1;
 907                         info.next_iwarp_state = I40IW_QP_STATE_RTS;
 908                         info.tcp_ctx_valid = true;
 909                         info.ord_valid = true;
 910                         info.arp_cache_idx_valid = true;
 911                         info.cq_num_valid = true;
 912                         break;
 913                 case IB_QPS_SQD:
 914                         if (iwqp->hw_iwarp_state > (u32)I40IW_QP_STATE_RTS) {
 915                                 err = 0;
 916                                 goto exit;
 917                         }
 918                         if ((iwqp->iwarp_state == (u32)I40IW_QP_STATE_CLOSING) ||
 919                             (iwqp->iwarp_state < (u32)I40IW_QP_STATE_RTS)) {
 920                                 err = 0;
 921                                 goto exit;
 922                         }
 923                         if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_CLOSING) {
 924                                 err = -EINVAL;
 925                                 goto exit;
 926                         }
 927                         info.next_iwarp_state = I40IW_QP_STATE_CLOSING;
 928                         issue_modify_qp = 1;
 929                         break;
 930                 case IB_QPS_SQE:
 931                         if (iwqp->iwarp_state >= (u32)I40IW_QP_STATE_TERMINATE) {
 932                                 err = -EINVAL;
 933                                 goto exit;
 934                         }
 935                         info.next_iwarp_state = I40IW_QP_STATE_TERMINATE;
 936                         issue_modify_qp = 1;
 937                         break;
 938                 case IB_QPS_ERR:
 939                 case IB_QPS_RESET:
 940                         if (iwqp->iwarp_state == (u32)I40IW_QP_STATE_ERROR) {
 941                                 err = -EINVAL;
 942                                 goto exit;
 943                         }
 944                         if (iwqp->sc_qp.term_flags)
 945                                 del_timer(&iwqp->terminate_timer);
 946                         info.next_iwarp_state = I40IW_QP_STATE_ERROR;
 947                         if ((iwqp->hw_tcp_state > I40IW_TCP_STATE_CLOSED) &&
 948                             iwdev->iw_status &&
 949                             (iwqp->hw_tcp_state != I40IW_TCP_STATE_TIME_WAIT))
 950                                 info.reset_tcp_conn = true;
 951                         else
 952                                 dont_wait = 1;
 953                         issue_modify_qp = 1;
 954                         info.next_iwarp_state = I40IW_QP_STATE_ERROR;
 955                         break;
 956                 default:
 957                         err = -EINVAL;
 958                         goto exit;
 959                 }
 960
 961                 iwqp->ibqp_state = attr->qp_state;
 962
 963                 if (issue_modify_qp)
 964                         iwqp->iwarp_state = info.next_iwarp_state;
 965                 else
 966                         info.next_iwarp_state = iwqp->iwarp_state;
 967         }
 968         if (attr_mask & IB_QP_ACCESS_FLAGS) {
 969                 ctx_info->iwarp_info_valid = true;
 970                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
 971                         iwarp_info->wr_rdresp_en = true;
 972                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
 973                         iwarp_info->wr_rdresp_en = true;
 974                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
 975                         iwarp_info->rd_enable = true;
 976                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND)
 977                         iwarp_info->bind_en = true;
 978
 979                 if (iwqp->user_mode) {
 980                         iwarp_info->rd_enable = true;
 981                         iwarp_info->wr_rdresp_en = true;
 982                         iwarp_info->priv_mode_en = false;
 983                 }
 984         }
 985
 986         if (ctx_info->iwarp_info_valid) {
 987                 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 988                 int ret;
 989
 990                 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
 991                 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
 992                 ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
 993                                                      (u64 *)iwqp->host_ctx.va,
 994                                                      ctx_info);
 995                 if (ret) {
 996                         i40iw_pr_err("setting QP context\n");
 997                         err = -EINVAL;
 998                         goto exit;
 999                 }
1000         }
1001
1002         spin_unlock_irqrestore(&iwqp->lock, flags);
1003
1004         if (issue_modify_qp)
1005                 i40iw_hw_modify_qp(iwdev, iwqp, &info, true);
1006
1007         if (issue_modify_qp && (iwqp->ibqp_state > IB_QPS_RTS)) {
1008                 if (dont_wait) {
1009                         if (iwqp->cm_id && iwqp->hw_tcp_state) {
1010                                 spin_lock_irqsave(&iwqp->lock, flags);
1011                                 iwqp->hw_tcp_state = I40IW_TCP_STATE_CLOSED;
1012                                 iwqp->last_aeq = I40IW_AE_RESET_SENT;
1013                                 spin_unlock_irqrestore(&iwqp->lock, flags);
1014                         }
1015                 }
1016         }
1017         return 0;
1018 exit:
1019         spin_unlock_irqrestore(&iwqp->lock, flags);
1020         return err;
1021 }
1022
1023 /**
1024  * cq_free_resources - free up recources for cq
1025  * @iwdev: iwarp device
1026  * @iwcq: cq ptr
1027  */
1028 static void cq_free_resources(struct i40iw_device *iwdev, struct i40iw_cq *iwcq)
1029 {
1030         struct i40iw_sc_cq *cq = &iwcq->sc_cq;
1031
1032         if (!iwcq->user_mode)
1033                 i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwcq->kmem);
1034         i40iw_free_resource(iwdev, iwdev->allocated_cqs, cq->cq_uk.cq_id);
1035 }
1036
1037 /**
1038  * cq_wq_destroy - send cq destroy cqp
1039  * @iwdev: iwarp device
1040  * @cq: hardware control cq
1041  */
1042 static void cq_wq_destroy(struct i40iw_device *iwdev, struct i40iw_sc_cq *cq)
1043 {
1044         enum i40iw_status_code status;
1045         struct i40iw_cqp_request *cqp_request;
1046         struct cqp_commands_info *cqp_info;
1047
1048         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1049         if (!cqp_request)
1050                 return;
1051
1052         cqp_info = &cqp_request->info;
1053
1054         cqp_info->cqp_cmd = OP_CQ_DESTROY;
1055         cqp_info->post_sq = 1;
1056         cqp_info->in.u.cq_destroy.cq = cq;
1057         cqp_info->in.u.cq_destroy.scratch = (uintptr_t)cqp_request;
1058         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1059         if (status)
1060                 i40iw_pr_err("CQP-OP Destroy QP fail");
1061 }
1062
1063 /**
1064  * i40iw_destroy_cq - destroy cq
1065  * @ib_cq: cq pointer
1066  */
1067 static int i40iw_destroy_cq(struct ib_cq *ib_cq)
1068 {
1069         struct i40iw_cq *iwcq;
1070         struct i40iw_device *iwdev;
1071         struct i40iw_sc_cq *cq;
1072
1073         if (!ib_cq) {
1074                 i40iw_pr_err("ib_cq == NULL\n");
1075                 return 0;
1076         }
1077
1078         iwcq = to_iwcq(ib_cq);
1079         iwdev = to_iwdev(ib_cq->device);
1080         cq = &iwcq->sc_cq;
1081         cq_wq_destroy(iwdev, cq);
1082         cq_free_resources(iwdev, iwcq);
1083         kfree(iwcq);
1084         return 0;
1085 }
1086
1087 /**
1088  * i40iw_create_cq - create cq
1089  * @ibdev: device pointer from stack
1090  * @attr: attributes for cq
1091  * @context: user context created during alloc
1092  * @udata: user data
1093  */
1094 static struct ib_cq *i40iw_create_cq(struct ib_device *ibdev,
1095                                      const struct ib_cq_init_attr *attr,
1096                                      struct ib_ucontext *context,
1097                                      struct ib_udata *udata)
1098 {
1099         struct i40iw_device *iwdev = to_iwdev(ibdev);
1100         struct i40iw_cq *iwcq;
1101         struct i40iw_pbl *iwpbl;
1102         u32 cq_num = 0;
1103         struct i40iw_sc_cq *cq;
1104         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1105         struct i40iw_cq_init_info info;
1106         enum i40iw_status_code status;
1107         struct i40iw_cqp_request *cqp_request;
1108         struct cqp_commands_info *cqp_info;
1109         struct i40iw_cq_uk_init_info *ukinfo = &info.cq_uk_init_info;
1110         unsigned long flags;
1111         int err_code;
1112         int entries = attr->cqe;
1113
1114         if (entries > iwdev->max_cqe)
1115                 return ERR_PTR(-EINVAL);
1116
1117         iwcq = kzalloc(sizeof(*iwcq), GFP_KERNEL);
1118         if (!iwcq)
1119                 return ERR_PTR(-ENOMEM);
1120
1121         memset(&info, 0, sizeof(info));
1122
1123         err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_cqs,
1124                                         iwdev->max_cq, &cq_num,
1125                                         &iwdev->next_cq);
1126         if (err_code)
1127                 goto error;
1128
1129         cq = &iwcq->sc_cq;
1130         cq->back_cq = (void *)iwcq;
1131         spin_lock_init(&iwcq->lock);
1132
1133         info.dev = dev;
1134         ukinfo->cq_size = max(entries, 4);
1135         ukinfo->cq_id = cq_num;
1136         iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size;
1137         info.ceqe_mask = 0;
1138         info.ceq_id = 0;
1139         info.ceq_id_valid = true;
1140         info.ceqe_mask = 1;
1141         info.type = I40IW_CQ_TYPE_IWARP;
1142         if (context) {
1143                 struct i40iw_ucontext *ucontext;
1144                 struct i40iw_create_cq_req req;
1145                 struct i40iw_cq_mr *cqmr;
1146
1147                 memset(&req, 0, sizeof(req));
1148                 iwcq->user_mode = true;
1149                 ucontext = to_ucontext(context);
1150                 if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req)))
1151                         goto cq_free_resources;
1152
1153                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1154                 iwpbl = i40iw_get_pbl((unsigned long)req.user_cq_buffer,
1155                                       &ucontext->cq_reg_mem_list);
1156                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1157                 if (!iwpbl) {
1158                         err_code = -EPROTO;
1159                         goto cq_free_resources;
1160                 }
1161
1162                 iwcq->iwpbl = iwpbl;
1163                 iwcq->cq_mem_size = 0;
1164                 cqmr = &iwpbl->cq_mr;
1165                 info.shadow_area_pa = cpu_to_le64(cqmr->shadow);
1166                 if (iwpbl->pbl_allocated) {
1167                         info.virtual_map = true;
1168                         info.pbl_chunk_size = 1;
1169                         info.first_pm_pbl_idx = cqmr->cq_pbl.idx;
1170                 } else {
1171                         info.cq_base_pa = cqmr->cq_pbl.addr;
1172                 }
1173         } else {
1174                 /* Kmode allocations */
1175                 int rsize;
1176                 int shadow;
1177
1178                 rsize = info.cq_uk_init_info.cq_size * sizeof(struct i40iw_cqe);
1179                 rsize = round_up(rsize, 256);
1180                 shadow = I40IW_SHADOW_AREA_SIZE << 3;
1181                 status = i40iw_allocate_dma_mem(dev->hw, &iwcq->kmem,
1182                                                 rsize + shadow, 256);
1183                 if (status) {
1184                         err_code = -ENOMEM;
1185                         goto cq_free_resources;
1186                 }
1187                 ukinfo->cq_base = iwcq->kmem.va;
1188                 info.cq_base_pa = iwcq->kmem.pa;
1189                 info.shadow_area_pa = info.cq_base_pa + rsize;
1190                 ukinfo->shadow_area = iwcq->kmem.va + rsize;
1191         }
1192
1193         if (dev->iw_priv_cq_ops->cq_init(cq, &info)) {
1194                 i40iw_pr_err("init cq fail\n");
1195                 err_code = -EPROTO;
1196                 goto cq_free_resources;
1197         }
1198
1199         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1200         if (!cqp_request) {
1201                 err_code = -ENOMEM;
1202                 goto cq_free_resources;
1203         }
1204
1205         cqp_info = &cqp_request->info;
1206         cqp_info->cqp_cmd = OP_CQ_CREATE;
1207         cqp_info->post_sq = 1;
1208         cqp_info->in.u.cq_create.cq = cq;
1209         cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1210         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1211         if (status) {
1212                 i40iw_pr_err("CQP-OP Create QP fail");
1213                 err_code = -EPROTO;
1214                 goto cq_free_resources;
1215         }
1216
1217         if (context) {
1218                 struct i40iw_create_cq_resp resp;
1219
1220                 memset(&resp, 0, sizeof(resp));
1221                 resp.cq_id = info.cq_uk_init_info.cq_id;
1222                 resp.cq_size = info.cq_uk_init_info.cq_size;
1223                 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
1224                         i40iw_pr_err("copy to user data\n");
1225                         err_code = -EPROTO;
1226                         goto cq_destroy;
1227                 }
1228         }
1229
1230         return (struct ib_cq *)iwcq;
1231
1232 cq_destroy:
1233         cq_wq_destroy(iwdev, cq);
1234 cq_free_resources:
1235         cq_free_resources(iwdev, iwcq);
1236 error:
1237         kfree(iwcq);
1238         return ERR_PTR(err_code);
1239 }
1240
1241 /**
1242  * i40iw_get_user_access - get hw access from IB access
1243  * @acc: IB access to return hw access
1244  */
1245 static inline u16 i40iw_get_user_access(int acc)
1246 {
1247         u16 access = 0;
1248
1249         access |= (acc & IB_ACCESS_LOCAL_WRITE) ? I40IW_ACCESS_FLAGS_LOCALWRITE : 0;
1250         access |= (acc & IB_ACCESS_REMOTE_WRITE) ? I40IW_ACCESS_FLAGS_REMOTEWRITE : 0;
1251         access |= (acc & IB_ACCESS_REMOTE_READ) ? I40IW_ACCESS_FLAGS_REMOTEREAD : 0;
1252         access |= (acc & IB_ACCESS_MW_BIND) ? I40IW_ACCESS_FLAGS_BIND_WINDOW : 0;
1253         return access;
1254 }
1255
1256 /**
1257  * i40iw_free_stag - free stag resource
1258  * @iwdev: iwarp device
1259  * @stag: stag to free
1260  */
1261 static void i40iw_free_stag(struct i40iw_device *iwdev, u32 stag)
1262 {
1263         u32 stag_idx;
1264
1265         stag_idx = (stag & iwdev->mr_stagmask) >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1266         i40iw_free_resource(iwdev, iwdev->allocated_mrs, stag_idx);
1267 }
1268
1269 /**
1270  * i40iw_create_stag - create random stag
1271  * @iwdev: iwarp device
1272  */
1273 static u32 i40iw_create_stag(struct i40iw_device *iwdev)
1274 {
1275         u32 stag = 0;
1276         u32 stag_index = 0;
1277         u32 next_stag_index;
1278         u32 driver_key;
1279         u32 random;
1280         u8 consumer_key;
1281         int ret;
1282
1283         get_random_bytes(&random, sizeof(random));
1284         consumer_key = (u8)random;
1285
1286         driver_key = random & ~iwdev->mr_stagmask;
1287         next_stag_index = (random & iwdev->mr_stagmask) >> 8;
1288         next_stag_index %= iwdev->max_mr;
1289
1290         ret = i40iw_alloc_resource(iwdev,
1291                                    iwdev->allocated_mrs, iwdev->max_mr,
1292                                    &stag_index, &next_stag_index);
1293         if (!ret) {
1294                 stag = stag_index << I40IW_CQPSQ_STAG_IDX_SHIFT;
1295                 stag |= driver_key;
1296                 stag += (u32)consumer_key;
1297         }
1298         return stag;
1299 }
1300
1301 /**
1302  * i40iw_next_pbl_addr - Get next pbl address
1303  * @palloc: Poiner to allocated pbles
1304  * @pbl: pointer to a pble
1305  * @pinfo: info pointer
1306  * @idx: index
1307  */
1308 static inline u64 *i40iw_next_pbl_addr(struct i40iw_pble_alloc *palloc,
1309                                        u64 *pbl,
1310                                        struct i40iw_pble_info **pinfo,
1311                                        u32 *idx)
1312 {
1313         *idx += 1;
1314         if ((!(*pinfo)) || (*idx != (*pinfo)->cnt))
1315                 return ++pbl;
1316         *idx = 0;
1317         (*pinfo)++;
1318         return (u64 *)(*pinfo)->addr;
1319 }
1320
1321 /**
1322  * i40iw_copy_user_pgaddrs - copy user page address to pble's os locally
1323  * @iwmr: iwmr for IB's user page addresses
1324  * @pbl: ple pointer to save 1 level or 0 level pble
1325  * @level: indicated level 0, 1 or 2
1326  */
1327 static void i40iw_copy_user_pgaddrs(struct i40iw_mr *iwmr,
1328                                     u64 *pbl,
1329                                     enum i40iw_pble_level level)
1330 {
1331         struct ib_umem *region = iwmr->region;
1332         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1333         int chunk_pages, entry, pg_shift, i;
1334         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1335         struct i40iw_pble_info *pinfo;
1336         struct scatterlist *sg;
1337         u32 idx = 0;
1338
1339         pinfo = (level == I40IW_LEVEL_1) ? NULL : palloc->level2.leaf;
1340         pg_shift = ffs(region->page_size) - 1;
1341         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
1342                 chunk_pages = sg_dma_len(sg) >> pg_shift;
1343                 if ((iwmr->type == IW_MEMREG_TYPE_QP) &&
1344                     !iwpbl->qp_mr.sq_page)
1345                         iwpbl->qp_mr.sq_page = sg_page(sg);
1346                 for (i = 0; i < chunk_pages; i++) {
1347                         *pbl = cpu_to_le64(sg_dma_address(sg) + region->page_size * i);
1348                         pbl = i40iw_next_pbl_addr(palloc, pbl, &pinfo, &idx);
1349                 }
1350         }
1351 }
1352
1353 /**
1354  * i40iw_setup_pbles - copy user pg address to pble's
1355  * @iwdev: iwarp device
1356  * @iwmr: mr pointer for this memory registration
1357  * @use_pbles: flag if to use pble's or memory (level 0)
1358  */
1359 static int i40iw_setup_pbles(struct i40iw_device *iwdev,
1360                              struct i40iw_mr *iwmr,
1361                              bool use_pbles)
1362 {
1363         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1364         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1365         struct i40iw_pble_info *pinfo;
1366         u64 *pbl;
1367         enum i40iw_status_code status;
1368         enum i40iw_pble_level level = I40IW_LEVEL_1;
1369
1370         if (!use_pbles && (iwmr->page_cnt > MAX_SAVE_PAGE_ADDRS))
1371                 return -ENOMEM;
1372
1373         if (use_pbles) {
1374                 mutex_lock(&iwdev->pbl_mutex);
1375                 status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt);
1376                 mutex_unlock(&iwdev->pbl_mutex);
1377                 if (status)
1378                         return -ENOMEM;
1379
1380                 iwpbl->pbl_allocated = true;
1381                 level = palloc->level;
1382                 pinfo = (level == I40IW_LEVEL_1) ? &palloc->level1 : palloc->level2.leaf;
1383                 pbl = (u64 *)pinfo->addr;
1384         } else {
1385                 pbl = iwmr->pgaddrmem;
1386         }
1387
1388         i40iw_copy_user_pgaddrs(iwmr, pbl, level);
1389         return 0;
1390 }
1391
1392 /**
1393  * i40iw_handle_q_mem - handle memory for qp and cq
1394  * @iwdev: iwarp device
1395  * @req: information for q memory management
1396  * @iwpbl: pble struct
1397  * @use_pbles: flag to use pble
1398  */
1399 static int i40iw_handle_q_mem(struct i40iw_device *iwdev,
1400                               struct i40iw_mem_reg_req *req,
1401                               struct i40iw_pbl *iwpbl,
1402                               bool use_pbles)
1403 {
1404         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1405         struct i40iw_mr *iwmr = iwpbl->iwmr;
1406         struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
1407         struct i40iw_cq_mr *cqmr = &iwpbl->cq_mr;
1408         struct i40iw_hmc_pble *hmc_p;
1409         u64 *arr = iwmr->pgaddrmem;
1410         int err;
1411         int total;
1412
1413         total = req->sq_pages + req->rq_pages + req->cq_pages;
1414
1415         err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
1416         if (err)
1417                 return err;
1418         if (use_pbles && (palloc->level != I40IW_LEVEL_1)) {
1419                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1420                 iwpbl->pbl_allocated = false;
1421                 return -ENOMEM;
1422         }
1423
1424         if (use_pbles)
1425                 arr = (u64 *)palloc->level1.addr;
1426         if (req->reg_type == IW_MEMREG_TYPE_QP) {
1427                 hmc_p = &qpmr->sq_pbl;
1428                 qpmr->shadow = (dma_addr_t)arr[total];
1429                 if (use_pbles) {
1430                         hmc_p->idx = palloc->level1.idx;
1431                         hmc_p = &qpmr->rq_pbl;
1432                         hmc_p->idx = palloc->level1.idx + req->sq_pages;
1433                 } else {
1434                         hmc_p->addr = arr[0];
1435                         hmc_p = &qpmr->rq_pbl;
1436                         hmc_p->addr = arr[1];
1437                 }
1438         } else {                /* CQ */
1439                 hmc_p = &cqmr->cq_pbl;
1440                 cqmr->shadow = (dma_addr_t)arr[total];
1441                 if (use_pbles)
1442                         hmc_p->idx = palloc->level1.idx;
1443                 else
1444                         hmc_p->addr = arr[0];
1445         }
1446         return err;
1447 }
1448
1449 /**
1450  * i40iw_hw_alloc_stag - cqp command to allocate stag
1451  * @iwdev: iwarp device
1452  * @iwmr: iwarp mr pointer
1453  */
1454 static int i40iw_hw_alloc_stag(struct i40iw_device *iwdev, struct i40iw_mr *iwmr)
1455 {
1456         struct i40iw_allocate_stag_info *info;
1457         struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
1458         enum i40iw_status_code status;
1459         int err = 0;
1460         struct i40iw_cqp_request *cqp_request;
1461         struct cqp_commands_info *cqp_info;
1462
1463         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1464         if (!cqp_request)
1465                 return -ENOMEM;
1466
1467         cqp_info = &cqp_request->info;
1468         info = &cqp_info->in.u.alloc_stag.info;
1469         memset(info, 0, sizeof(*info));
1470         info->page_size = PAGE_SIZE;
1471         info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1472         info->pd_id = iwpd->sc_pd.pd_id;
1473         info->total_len = iwmr->length;
1474         info->remote_access = true;
1475         cqp_info->cqp_cmd = OP_ALLOC_STAG;
1476         cqp_info->post_sq = 1;
1477         cqp_info->in.u.alloc_stag.dev = &iwdev->sc_dev;
1478         cqp_info->in.u.alloc_stag.scratch = (uintptr_t)cqp_request;
1479
1480         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1481         if (status) {
1482                 err = -ENOMEM;
1483                 i40iw_pr_err("CQP-OP MR Reg fail");
1484         }
1485         return err;
1486 }
1487
1488 /**
1489  * i40iw_alloc_mr - register stag for fast memory registration
1490  * @pd: ibpd pointer
1491  * @mr_type: memory for stag registrion
1492  * @max_num_sg: man number of pages
1493  */
1494 static struct ib_mr *i40iw_alloc_mr(struct ib_pd *pd,
1495                                     enum ib_mr_type mr_type,
1496                                     u32 max_num_sg)
1497 {
1498         struct i40iw_pd *iwpd = to_iwpd(pd);
1499         struct i40iw_device *iwdev = to_iwdev(pd->device);
1500         struct i40iw_pble_alloc *palloc;
1501         struct i40iw_pbl *iwpbl;
1502         struct i40iw_mr *iwmr;
1503         enum i40iw_status_code status;
1504         u32 stag;
1505         int err_code = -ENOMEM;
1506
1507         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1508         if (!iwmr)
1509                 return ERR_PTR(-ENOMEM);
1510
1511         stag = i40iw_create_stag(iwdev);
1512         if (!stag) {
1513                 err_code = -EOVERFLOW;
1514                 goto err;
1515         }
1516         iwmr->stag = stag;
1517         iwmr->ibmr.rkey = stag;
1518         iwmr->ibmr.lkey = stag;
1519         iwmr->ibmr.pd = pd;
1520         iwmr->ibmr.device = pd->device;
1521         iwpbl = &iwmr->iwpbl;
1522         iwpbl->iwmr = iwmr;
1523         iwmr->type = IW_MEMREG_TYPE_MEM;
1524         palloc = &iwpbl->pble_alloc;
1525         iwmr->page_cnt = max_num_sg;
1526         mutex_lock(&iwdev->pbl_mutex);
1527         status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt);
1528         mutex_unlock(&iwdev->pbl_mutex);
1529         if (status)
1530                 goto err1;
1531
1532         if (palloc->level != I40IW_LEVEL_1)
1533                 goto err2;
1534         err_code = i40iw_hw_alloc_stag(iwdev, iwmr);
1535         if (err_code)
1536                 goto err2;
1537         iwpbl->pbl_allocated = true;
1538         i40iw_add_pdusecount(iwpd);
1539         return &iwmr->ibmr;
1540 err2:
1541         i40iw_free_pble(iwdev->pble_rsrc, palloc);
1542 err1:
1543         i40iw_free_stag(iwdev, stag);
1544 err:
1545         kfree(iwmr);
1546         return ERR_PTR(err_code);
1547 }
1548
1549 /**
1550  * i40iw_set_page - populate pbl list for fmr
1551  * @ibmr: ib mem to access iwarp mr pointer
1552  * @addr: page dma address fro pbl list
1553  */
1554 static int i40iw_set_page(struct ib_mr *ibmr, u64 addr)
1555 {
1556         struct i40iw_mr *iwmr = to_iwmr(ibmr);
1557         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1558         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1559         u64 *pbl;
1560
1561         if (unlikely(iwmr->npages == iwmr->page_cnt))
1562                 return -ENOMEM;
1563
1564         pbl = (u64 *)palloc->level1.addr;
1565         pbl[iwmr->npages++] = cpu_to_le64(addr);
1566         return 0;
1567 }
1568
1569 /**
1570  * i40iw_map_mr_sg - map of sg list for fmr
1571  * @ibmr: ib mem to access iwarp mr pointer
1572  * @sg: scatter gather list for fmr
1573  * @sg_nents: number of sg pages
1574  */
1575 static int i40iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
1576                            int sg_nents, unsigned int *sg_offset)
1577 {
1578         struct i40iw_mr *iwmr = to_iwmr(ibmr);
1579
1580         iwmr->npages = 0;
1581         return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, i40iw_set_page);
1582 }
1583
1584 /**
1585  * i40iw_drain_sq - drain the send queue
1586  * @ibqp: ib qp pointer
1587  */
1588 static void i40iw_drain_sq(struct ib_qp *ibqp)
1589 {
1590         struct i40iw_qp *iwqp = to_iwqp(ibqp);
1591         struct i40iw_sc_qp *qp = &iwqp->sc_qp;
1592
1593         if (I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring))
1594                 wait_for_completion(&iwqp->sq_drained);
1595 }
1596
1597 /**
1598  * i40iw_drain_rq - drain the receive queue
1599  * @ibqp: ib qp pointer
1600  */
1601 static void i40iw_drain_rq(struct ib_qp *ibqp)
1602 {
1603         struct i40iw_qp *iwqp = to_iwqp(ibqp);
1604         struct i40iw_sc_qp *qp = &iwqp->sc_qp;
1605
1606         if (I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring))
1607                 wait_for_completion(&iwqp->rq_drained);
1608 }
1609
1610 /**
1611  * i40iw_hwreg_mr - send cqp command for memory registration
1612  * @iwdev: iwarp device
1613  * @iwmr: iwarp mr pointer
1614  * @access: access for MR
1615  */
1616 static int i40iw_hwreg_mr(struct i40iw_device *iwdev,
1617                           struct i40iw_mr *iwmr,
1618                           u16 access)
1619 {
1620         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1621         struct i40iw_reg_ns_stag_info *stag_info;
1622         struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
1623         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1624         enum i40iw_status_code status;
1625         int err = 0;
1626         struct i40iw_cqp_request *cqp_request;
1627         struct cqp_commands_info *cqp_info;
1628
1629         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1630         if (!cqp_request)
1631                 return -ENOMEM;
1632
1633         cqp_info = &cqp_request->info;
1634         stag_info = &cqp_info->in.u.mr_reg_non_shared.info;
1635         memset(stag_info, 0, sizeof(*stag_info));
1636         stag_info->va = (void *)(unsigned long)iwpbl->user_base;
1637         stag_info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1638         stag_info->stag_key = (u8)iwmr->stag;
1639         stag_info->total_len = iwmr->length;
1640         stag_info->access_rights = access;
1641         stag_info->pd_id = iwpd->sc_pd.pd_id;
1642         stag_info->addr_type = I40IW_ADDR_TYPE_VA_BASED;
1643
1644         if (iwmr->page_cnt > 1) {
1645                 if (palloc->level == I40IW_LEVEL_1) {
1646                         stag_info->first_pm_pbl_index = palloc->level1.idx;
1647                         stag_info->chunk_size = 1;
1648                 } else {
1649                         stag_info->first_pm_pbl_index = palloc->level2.root.idx;
1650                         stag_info->chunk_size = 3;
1651                 }
1652         } else {
1653                 stag_info->reg_addr_pa = iwmr->pgaddrmem[0];
1654         }
1655
1656         cqp_info->cqp_cmd = OP_MR_REG_NON_SHARED;
1657         cqp_info->post_sq = 1;
1658         cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->sc_dev;
1659         cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request;
1660
1661         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1662         if (status) {
1663                 err = -ENOMEM;
1664                 i40iw_pr_err("CQP-OP MR Reg fail");
1665         }
1666         return err;
1667 }
1668
1669 /**
1670  * i40iw_reg_user_mr - Register a user memory region
1671  * @pd: ptr of pd
1672  * @start: virtual start address
1673  * @length: length of mr
1674  * @virt: virtual address
1675  * @acc: access of mr
1676  * @udata: user data
1677  */
1678 static struct ib_mr *i40iw_reg_user_mr(struct ib_pd *pd,
1679                                        u64 start,
1680                                        u64 length,
1681                                        u64 virt,
1682                                        int acc,
1683                                        struct ib_udata *udata)
1684 {
1685         struct i40iw_pd *iwpd = to_iwpd(pd);
1686         struct i40iw_device *iwdev = to_iwdev(pd->device);
1687         struct i40iw_ucontext *ucontext;
1688         struct i40iw_pble_alloc *palloc;
1689         struct i40iw_pbl *iwpbl;
1690         struct i40iw_mr *iwmr;
1691         struct ib_umem *region;
1692         struct i40iw_mem_reg_req req;
1693         u64 pbl_depth = 0;
1694         u32 stag = 0;
1695         u16 access;
1696         u64 region_length;
1697         bool use_pbles = false;
1698         unsigned long flags;
1699         int err = -ENOSYS;
1700
1701         if (length > I40IW_MAX_MR_SIZE)
1702                 return ERR_PTR(-EINVAL);
1703         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
1704         if (IS_ERR(region))
1705                 return (struct ib_mr *)region;
1706
1707         if (ib_copy_from_udata(&req, udata, sizeof(req))) {
1708                 ib_umem_release(region);
1709                 return ERR_PTR(-EFAULT);
1710         }
1711
1712         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1713         if (!iwmr) {
1714                 ib_umem_release(region);
1715                 return ERR_PTR(-ENOMEM);
1716         }
1717
1718         iwpbl = &iwmr->iwpbl;
1719         iwpbl->iwmr = iwmr;
1720         iwmr->region = region;
1721         iwmr->ibmr.pd = pd;
1722         iwmr->ibmr.device = pd->device;
1723         ucontext = to_ucontext(pd->uobject->context);
1724         region_length = region->length + (start & 0xfff);
1725         pbl_depth = region_length >> 12;
1726         pbl_depth += (region_length & (4096 - 1)) ? 1 : 0;
1727         iwmr->length = region->length;
1728
1729         iwpbl->user_base = virt;
1730         palloc = &iwpbl->pble_alloc;
1731
1732         iwmr->type = req.reg_type;
1733         iwmr->page_cnt = (u32)pbl_depth;
1734
1735         switch (req.reg_type) {
1736         case IW_MEMREG_TYPE_QP:
1737                 use_pbles = ((req.sq_pages + req.rq_pages) > 2);
1738                 err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
1739                 if (err)
1740                         goto error;
1741                 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
1742                 list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list);
1743                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
1744                 break;
1745         case IW_MEMREG_TYPE_CQ:
1746                 use_pbles = (req.cq_pages > 1);
1747                 err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
1748                 if (err)
1749                         goto error;
1750
1751                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1752                 list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list);
1753                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1754                 break;
1755         case IW_MEMREG_TYPE_MEM:
1756                 access = I40IW_ACCESS_FLAGS_LOCALREAD;
1757
1758                 use_pbles = (iwmr->page_cnt != 1);
1759                 err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
1760                 if (err)
1761                         goto error;
1762
1763                 access |= i40iw_get_user_access(acc);
1764                 stag = i40iw_create_stag(iwdev);
1765                 if (!stag) {
1766                         err = -ENOMEM;
1767                         goto error;
1768                 }
1769
1770                 iwmr->stag = stag;
1771                 iwmr->ibmr.rkey = stag;
1772                 iwmr->ibmr.lkey = stag;
1773
1774                 err = i40iw_hwreg_mr(iwdev, iwmr, access);
1775                 if (err) {
1776                         i40iw_free_stag(iwdev, stag);
1777                         goto error;
1778                 }
1779                 break;
1780         default:
1781                 goto error;
1782         }
1783
1784         iwmr->type = req.reg_type;
1785         if (req.reg_type == IW_MEMREG_TYPE_MEM)
1786                 i40iw_add_pdusecount(iwpd);
1787         return &iwmr->ibmr;
1788
1789 error:
1790         if (palloc->level != I40IW_LEVEL_0)
1791                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1792         ib_umem_release(region);
1793         kfree(iwmr);
1794         return ERR_PTR(err);
1795 }
1796
1797 /**
1798  * i40iw_reg_phys_mr - register kernel physical memory
1799  * @pd: ibpd pointer
1800  * @addr: physical address of memory to register
1801  * @size: size of memory to register
1802  * @acc: Access rights
1803  * @iova_start: start of virtual address for physical buffers
1804  */
1805 struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *pd,
1806                                 u64 addr,
1807                                 u64 size,
1808                                 int acc,
1809                                 u64 *iova_start)
1810 {
1811         struct i40iw_pd *iwpd = to_iwpd(pd);
1812         struct i40iw_device *iwdev = to_iwdev(pd->device);
1813         struct i40iw_pbl *iwpbl;
1814         struct i40iw_mr *iwmr;
1815         enum i40iw_status_code status;
1816         u32 stag;
1817         u16 access = I40IW_ACCESS_FLAGS_LOCALREAD;
1818         int ret;
1819
1820         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1821         if (!iwmr)
1822                 return ERR_PTR(-ENOMEM);
1823         iwmr->ibmr.pd = pd;
1824         iwmr->ibmr.device = pd->device;
1825         iwpbl = &iwmr->iwpbl;
1826         iwpbl->iwmr = iwmr;
1827         iwmr->type = IW_MEMREG_TYPE_MEM;
1828         iwpbl->user_base = *iova_start;
1829         stag = i40iw_create_stag(iwdev);
1830         if (!stag) {
1831                 ret = -EOVERFLOW;
1832                 goto err;
1833         }
1834         access |= i40iw_get_user_access(acc);
1835         iwmr->stag = stag;
1836         iwmr->ibmr.rkey = stag;
1837         iwmr->ibmr.lkey = stag;
1838         iwmr->page_cnt = 1;
1839         iwmr->pgaddrmem[0]  = addr;
1840         iwmr->length = size;
1841         status = i40iw_hwreg_mr(iwdev, iwmr, access);
1842         if (status) {
1843                 i40iw_free_stag(iwdev, stag);
1844                 ret = -ENOMEM;
1845                 goto err;
1846         }
1847
1848         i40iw_add_pdusecount(iwpd);
1849         return &iwmr->ibmr;
1850  err:
1851         kfree(iwmr);
1852         return ERR_PTR(ret);
1853 }
1854
1855 /**
1856  * i40iw_get_dma_mr - register physical mem
1857  * @pd: ptr of pd
1858  * @acc: access for memory
1859  */
1860 static struct ib_mr *i40iw_get_dma_mr(struct ib_pd *pd, int acc)
1861 {
1862         u64 kva = 0;
1863
1864         return i40iw_reg_phys_mr(pd, 0, 0, acc, &kva);
1865 }
1866
1867 /**
1868  * i40iw_del_mem_list - Deleting pbl list entries for CQ/QP
1869  * @iwmr: iwmr for IB's user page addresses
1870  * @ucontext: ptr to user context
1871  */
1872 static void i40iw_del_memlist(struct i40iw_mr *iwmr,
1873                               struct i40iw_ucontext *ucontext)
1874 {
1875         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1876         unsigned long flags;
1877
1878         switch (iwmr->type) {
1879         case IW_MEMREG_TYPE_CQ:
1880                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1881                 if (!list_empty(&ucontext->cq_reg_mem_list))
1882                         list_del(&iwpbl->list);
1883                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1884                 break;
1885         case IW_MEMREG_TYPE_QP:
1886                 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
1887                 if (!list_empty(&ucontext->qp_reg_mem_list))
1888                         list_del(&iwpbl->list);
1889                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
1890                 break;
1891         default:
1892                 break;
1893         }
1894 }
1895
1896 /**
1897  * i40iw_dereg_mr - deregister mr
1898  * @ib_mr: mr ptr for dereg
1899  */
1900 static int i40iw_dereg_mr(struct ib_mr *ib_mr)
1901 {
1902         struct ib_pd *ibpd = ib_mr->pd;
1903         struct i40iw_pd *iwpd = to_iwpd(ibpd);
1904         struct i40iw_mr *iwmr = to_iwmr(ib_mr);
1905         struct i40iw_device *iwdev = to_iwdev(ib_mr->device);
1906         enum i40iw_status_code status;
1907         struct i40iw_dealloc_stag_info *info;
1908         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1909         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1910         struct i40iw_cqp_request *cqp_request;
1911         struct cqp_commands_info *cqp_info;
1912         u32 stag_idx;
1913
1914         if (iwmr->region)
1915                 ib_umem_release(iwmr->region);
1916
1917         if (iwmr->type != IW_MEMREG_TYPE_MEM) {
1918                 if (ibpd->uobject) {
1919                         struct i40iw_ucontext *ucontext;
1920
1921                         ucontext = to_ucontext(ibpd->uobject->context);
1922                         i40iw_del_memlist(iwmr, ucontext);
1923                 }
1924                 if (iwpbl->pbl_allocated)
1925                         i40iw_free_pble(iwdev->pble_rsrc, palloc);
1926                 kfree(iwmr);
1927                 return 0;
1928         }
1929
1930         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1931         if (!cqp_request)
1932                 return -ENOMEM;
1933
1934         cqp_info = &cqp_request->info;
1935         info = &cqp_info->in.u.dealloc_stag.info;
1936         memset(info, 0, sizeof(*info));
1937
1938         info->pd_id = cpu_to_le32(iwpd->sc_pd.pd_id & 0x00007fff);
1939         info->stag_idx = RS_64_1(ib_mr->rkey, I40IW_CQPSQ_STAG_IDX_SHIFT);
1940         stag_idx = info->stag_idx;
1941         info->mr = true;
1942         if (iwpbl->pbl_allocated)
1943                 info->dealloc_pbl = true;
1944
1945         cqp_info->cqp_cmd = OP_DEALLOC_STAG;
1946         cqp_info->post_sq = 1;
1947         cqp_info->in.u.dealloc_stag.dev = &iwdev->sc_dev;
1948         cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
1949         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1950         if (status)
1951                 i40iw_pr_err("CQP-OP dealloc failed for stag_idx = 0x%x\n", stag_idx);
1952         i40iw_rem_pdusecount(iwpd, iwdev);
1953         i40iw_free_stag(iwdev, iwmr->stag);
1954         if (iwpbl->pbl_allocated)
1955                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1956         kfree(iwmr);
1957         return 0;
1958 }
1959
1960 /**
1961  * i40iw_show_rev
1962  */
1963 static ssize_t i40iw_show_rev(struct device *dev,
1964                               struct device_attribute *attr, char *buf)
1965 {
1966         struct i40iw_ib_device *iwibdev = container_of(dev,
1967                                                        struct i40iw_ib_device,
1968                                                        ibdev.dev);
1969         u32 hw_rev = iwibdev->iwdev->sc_dev.hw_rev;
1970
1971         return sprintf(buf, "%x\n", hw_rev);
1972 }
1973
1974 /**
1975  * i40iw_show_hca
1976  */
1977 static ssize_t i40iw_show_hca(struct device *dev,
1978                               struct device_attribute *attr, char *buf)
1979 {
1980         return sprintf(buf, "I40IW\n");
1981 }
1982
1983 /**
1984  * i40iw_show_board
1985  */
1986 static ssize_t i40iw_show_board(struct device *dev,
1987                                 struct device_attribute *attr,
1988                                 char *buf)
1989 {
1990         return sprintf(buf, "%.*s\n", 32, "I40IW Board ID");
1991 }
1992
1993 static DEVICE_ATTR(hw_rev, S_IRUGO, i40iw_show_rev, NULL);
1994 static DEVICE_ATTR(hca_type, S_IRUGO, i40iw_show_hca, NULL);
1995 static DEVICE_ATTR(board_id, S_IRUGO, i40iw_show_board, NULL);
1996
1997 static struct device_attribute *i40iw_dev_attributes[] = {
1998         &dev_attr_hw_rev,
1999         &dev_attr_hca_type,
2000         &dev_attr_board_id
2001 };
2002
2003 /**
2004  * i40iw_copy_sg_list - copy sg list for qp
2005  * @sg_list: copied into sg_list
2006  * @sgl: copy from sgl
2007  * @num_sges: count of sg entries
2008  */
2009 static void i40iw_copy_sg_list(struct i40iw_sge *sg_list, struct ib_sge *sgl, int num_sges)
2010 {
2011         unsigned int i;
2012
2013         for (i = 0; (i < num_sges) && (i < I40IW_MAX_WQ_FRAGMENT_COUNT); i++) {
2014                 sg_list[i].tag_off = sgl[i].addr;
2015                 sg_list[i].len = sgl[i].length;
2016                 sg_list[i].stag = sgl[i].lkey;
2017         }
2018 }
2019
2020 /**
2021  * i40iw_post_send -  kernel application wr
2022  * @ibqp: qp ptr for wr
2023  * @ib_wr: work request ptr
2024  * @bad_wr: return of bad wr if err
2025  */
2026 static int i40iw_post_send(struct ib_qp *ibqp,
2027                            struct ib_send_wr *ib_wr,
2028                            struct ib_send_wr **bad_wr)
2029 {
2030         struct i40iw_qp *iwqp;
2031         struct i40iw_qp_uk *ukqp;
2032         struct i40iw_post_sq_info info;
2033         enum i40iw_status_code ret;
2034         int err = 0;
2035         unsigned long flags;
2036         bool inv_stag;
2037
2038         iwqp = (struct i40iw_qp *)ibqp;
2039         ukqp = &iwqp->sc_qp.qp_uk;
2040
2041         spin_lock_irqsave(&iwqp->lock, flags);
2042         while (ib_wr) {
2043                 inv_stag = false;
2044                 memset(&info, 0, sizeof(info));
2045                 info.wr_id = (u64)(ib_wr->wr_id);
2046                 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all)
2047                         info.signaled = true;
2048                 if (ib_wr->send_flags & IB_SEND_FENCE)
2049                         info.read_fence = true;
2050
2051                 switch (ib_wr->opcode) {
2052                 case IB_WR_SEND:
2053                         /* fall-through */
2054                 case IB_WR_SEND_WITH_INV:
2055                         if (ib_wr->opcode == IB_WR_SEND) {
2056                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
2057                                         info.op_type = I40IW_OP_TYPE_SEND_SOL;
2058                                 else
2059                                         info.op_type = I40IW_OP_TYPE_SEND;
2060                         } else {
2061                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
2062                                         info.op_type = I40IW_OP_TYPE_SEND_SOL_INV;
2063                                 else
2064                                         info.op_type = I40IW_OP_TYPE_SEND_INV;
2065                         }
2066
2067                         if (ib_wr->send_flags & IB_SEND_INLINE) {
2068                                 info.op.inline_send.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
2069                                 info.op.inline_send.len = ib_wr->sg_list[0].length;
2070                                 ret = ukqp->ops.iw_inline_send(ukqp, &info, ib_wr->ex.invalidate_rkey, false);
2071                         } else {
2072                                 info.op.send.num_sges = ib_wr->num_sge;
2073                                 info.op.send.sg_list = (struct i40iw_sge *)ib_wr->sg_list;
2074                                 ret = ukqp->ops.iw_send(ukqp, &info, ib_wr->ex.invalidate_rkey, false);
2075                         }
2076
2077                         if (ret) {
2078                                 if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
2079                                         err = -ENOMEM;
2080                                 else
2081                                         err = -EINVAL;
2082                         }
2083                         break;
2084                 case IB_WR_RDMA_WRITE:
2085                         info.op_type = I40IW_OP_TYPE_RDMA_WRITE;
2086
2087                         if (ib_wr->send_flags & IB_SEND_INLINE) {
2088                                 info.op.inline_rdma_write.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
2089                                 info.op.inline_rdma_write.len = ib_wr->sg_list[0].length;
2090                                 info.op.inline_rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
2091                                 info.op.inline_rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
2092                                 info.op.inline_rdma_write.rem_addr.len = ib_wr->sg_list->length;
2093                                 ret = ukqp->ops.iw_inline_rdma_write(ukqp, &info, false);
2094                         } else {
2095                                 info.op.rdma_write.lo_sg_list = (void *)ib_wr->sg_list;
2096                                 info.op.rdma_write.num_lo_sges = ib_wr->num_sge;
2097                                 info.op.rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
2098                                 info.op.rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
2099                                 info.op.rdma_write.rem_addr.len = ib_wr->sg_list->length;
2100                                 ret = ukqp->ops.iw_rdma_write(ukqp, &info, false);
2101                         }
2102
2103                         if (ret) {
2104                                 if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
2105                                         err = -ENOMEM;
2106                                 else
2107                                         err = -EINVAL;
2108                         }
2109                         break;
2110                 case IB_WR_RDMA_READ_WITH_INV:
2111                         inv_stag = true;
2112                         /* fall-through*/
2113                 case IB_WR_RDMA_READ:
2114                         if (ib_wr->num_sge > I40IW_MAX_SGE_RD) {
2115                                 err = -EINVAL;
2116                                 break;
2117                         }
2118                         info.op_type = I40IW_OP_TYPE_RDMA_READ;
2119                         info.op.rdma_read.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
2120                         info.op.rdma_read.rem_addr.stag = rdma_wr(ib_wr)->rkey;
2121                         info.op.rdma_read.rem_addr.len = ib_wr->sg_list->length;
2122                         info.op.rdma_read.lo_addr.tag_off = ib_wr->sg_list->addr;
2123                         info.op.rdma_read.lo_addr.stag = ib_wr->sg_list->lkey;
2124                         info.op.rdma_read.lo_addr.len = ib_wr->sg_list->length;
2125                         ret = ukqp->ops.iw_rdma_read(ukqp, &info, inv_stag, false);
2126                         if (ret) {
2127                                 if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
2128                                         err = -ENOMEM;
2129                                 else
2130                                         err = -EINVAL;
2131                         }
2132                         break;
2133                 case IB_WR_LOCAL_INV:
2134                         info.op_type = I40IW_OP_TYPE_INV_STAG;
2135                         info.op.inv_local_stag.target_stag = ib_wr->ex.invalidate_rkey;
2136                         ret = ukqp->ops.iw_stag_local_invalidate(ukqp, &info, true);
2137                         if (ret)
2138                                 err = -ENOMEM;
2139                         break;
2140                 case IB_WR_REG_MR:
2141                 {
2142                         struct i40iw_mr *iwmr = to_iwmr(reg_wr(ib_wr)->mr);
2143                         int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
2144                         int flags = reg_wr(ib_wr)->access;
2145                         struct i40iw_pble_alloc *palloc = &iwmr->iwpbl.pble_alloc;
2146                         struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev;
2147                         struct i40iw_fast_reg_stag_info info;
2148
2149                         memset(&info, 0, sizeof(info));
2150                         info.access_rights = I40IW_ACCESS_FLAGS_LOCALREAD;
2151                         info.access_rights |= i40iw_get_user_access(flags);
2152                         info.stag_key = reg_wr(ib_wr)->key & 0xff;
2153                         info.stag_idx = reg_wr(ib_wr)->key >> 8;
2154                         info.wr_id = ib_wr->wr_id;
2155
2156                         info.addr_type = I40IW_ADDR_TYPE_VA_BASED;
2157                         info.va = (void *)(uintptr_t)iwmr->ibmr.iova;
2158                         info.total_len = iwmr->ibmr.length;
2159                         info.reg_addr_pa = *(u64 *)palloc->level1.addr;
2160                         info.first_pm_pbl_index = palloc->level1.idx;
2161                         info.local_fence = ib_wr->send_flags & IB_SEND_FENCE;
2162                         info.signaled = ib_wr->send_flags & IB_SEND_SIGNALED;
2163
2164                         if (iwmr->npages > I40IW_MIN_PAGES_PER_FMR)
2165                                 info.chunk_size = 1;
2166
2167                         if (page_shift == 21)
2168                                 info.page_size = 1; /* 2M page */
2169
2170                         ret = dev->iw_priv_qp_ops->iw_mr_fast_register(&iwqp->sc_qp, &info, true);
2171                         if (ret)
2172                                 err = -ENOMEM;
2173                         break;
2174                 }
2175                 default:
2176                         err = -EINVAL;
2177                         i40iw_pr_err(" upost_send bad opcode = 0x%x\n",
2178                                      ib_wr->opcode);
2179                         break;
2180                 }
2181
2182                 if (err)
2183                         break;
2184                 ib_wr = ib_wr->next;
2185         }
2186
2187         if (err)
2188                 *bad_wr = ib_wr;
2189         else
2190                 ukqp->ops.iw_qp_post_wr(ukqp);
2191         spin_unlock_irqrestore(&iwqp->lock, flags);
2192
2193         return err;
2194 }
2195
2196 /**
2197  * i40iw_post_recv - post receive wr for kernel application
2198  * @ibqp: ib qp pointer
2199  * @ib_wr: work request for receive
2200  * @bad_wr: bad wr caused an error
2201  */
2202 static int i40iw_post_recv(struct ib_qp *ibqp,
2203                            struct ib_recv_wr *ib_wr,
2204                            struct ib_recv_wr **bad_wr)
2205 {
2206         struct i40iw_qp *iwqp;
2207         struct i40iw_qp_uk *ukqp;
2208         struct i40iw_post_rq_info post_recv;
2209         struct i40iw_sge sg_list[I40IW_MAX_WQ_FRAGMENT_COUNT];
2210         enum i40iw_status_code ret = 0;
2211         unsigned long flags;
2212         int err = 0;
2213
2214         iwqp = (struct i40iw_qp *)ibqp;
2215         ukqp = &iwqp->sc_qp.qp_uk;
2216
2217         memset(&post_recv, 0, sizeof(post_recv));
2218         spin_lock_irqsave(&iwqp->lock, flags);
2219         while (ib_wr) {
2220                 post_recv.num_sges = ib_wr->num_sge;
2221                 post_recv.wr_id = ib_wr->wr_id;
2222                 i40iw_copy_sg_list(sg_list, ib_wr->sg_list, ib_wr->num_sge);
2223                 post_recv.sg_list = sg_list;
2224                 ret = ukqp->ops.iw_post_receive(ukqp, &post_recv);
2225                 if (ret) {
2226                         i40iw_pr_err(" post_recv err %d\n", ret);
2227                         if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
2228                                 err = -ENOMEM;
2229                         else
2230                                 err = -EINVAL;
2231                         *bad_wr = ib_wr;
2232                         goto out;
2233                 }
2234                 ib_wr = ib_wr->next;
2235         }
2236  out:
2237         spin_unlock_irqrestore(&iwqp->lock, flags);
2238         return err;
2239 }
2240
2241 /**
2242  * i40iw_poll_cq - poll cq for completion (kernel apps)
2243  * @ibcq: cq to poll
2244  * @num_entries: number of entries to poll
2245  * @entry: wr of entry completed
2246  */
2247 static int i40iw_poll_cq(struct ib_cq *ibcq,
2248                          int num_entries,
2249                          struct ib_wc *entry)
2250 {
2251         struct i40iw_cq *iwcq;
2252         int cqe_count = 0;
2253         struct i40iw_cq_poll_info cq_poll_info;
2254         enum i40iw_status_code ret;
2255         struct i40iw_cq_uk *ukcq;
2256         struct i40iw_sc_qp *qp;
2257         struct i40iw_qp *iwqp;
2258         unsigned long flags;
2259
2260         iwcq = (struct i40iw_cq *)ibcq;
2261         ukcq = &iwcq->sc_cq.cq_uk;
2262
2263         spin_lock_irqsave(&iwcq->lock, flags);
2264         while (cqe_count < num_entries) {
2265                 ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info);
2266                 if (ret == I40IW_ERR_QUEUE_EMPTY) {
2267                         break;
2268                 } else if (ret == I40IW_ERR_QUEUE_DESTROYED) {
2269                         continue;
2270                 } else if (ret) {
2271                         if (!cqe_count)
2272                                 cqe_count = -1;
2273                         break;
2274                 }
2275                 entry->wc_flags = 0;
2276                 entry->wr_id = cq_poll_info.wr_id;
2277                 if (cq_poll_info.error) {
2278                         entry->status = IB_WC_WR_FLUSH_ERR;
2279                         entry->vendor_err = cq_poll_info.major_err << 16 | cq_poll_info.minor_err;
2280                 } else {
2281                         entry->status = IB_WC_SUCCESS;
2282                 }
2283
2284                 switch (cq_poll_info.op_type) {
2285                 case I40IW_OP_TYPE_RDMA_WRITE:
2286                         entry->opcode = IB_WC_RDMA_WRITE;
2287                         break;
2288                 case I40IW_OP_TYPE_RDMA_READ_INV_STAG:
2289                 case I40IW_OP_TYPE_RDMA_READ:
2290                         entry->opcode = IB_WC_RDMA_READ;
2291                         break;
2292                 case I40IW_OP_TYPE_SEND_SOL:
2293                 case I40IW_OP_TYPE_SEND_SOL_INV:
2294                 case I40IW_OP_TYPE_SEND_INV:
2295                 case I40IW_OP_TYPE_SEND:
2296                         entry->opcode = IB_WC_SEND;
2297                         break;
2298                 case I40IW_OP_TYPE_REC:
2299                         entry->opcode = IB_WC_RECV;
2300                         break;
2301                 default:
2302                         entry->opcode = IB_WC_RECV;
2303                         break;
2304                 }
2305
2306                 entry->ex.imm_data = 0;
2307                 qp = (struct i40iw_sc_qp *)cq_poll_info.qp_handle;
2308                 entry->qp = (struct ib_qp *)qp->back_qp;
2309                 entry->src_qp = cq_poll_info.qp_id;
2310                 iwqp = (struct i40iw_qp *)qp->back_qp;
2311                 if (iwqp->iwarp_state > I40IW_QP_STATE_RTS) {
2312                         if (!I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring))
2313                                 complete(&iwqp->sq_drained);
2314                         if (!I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring))
2315                                 complete(&iwqp->rq_drained);
2316                 }
2317                 entry->byte_len = cq_poll_info.bytes_xfered;
2318                 entry++;
2319                 cqe_count++;
2320         }
2321         spin_unlock_irqrestore(&iwcq->lock, flags);
2322         return cqe_count;
2323 }
2324
2325 /**
2326  * i40iw_req_notify_cq - arm cq kernel application
2327  * @ibcq: cq to arm
2328  * @notify_flags: notofication flags
2329  */
2330 static int i40iw_req_notify_cq(struct ib_cq *ibcq,
2331                                enum ib_cq_notify_flags notify_flags)
2332 {
2333         struct i40iw_cq *iwcq;
2334         struct i40iw_cq_uk *ukcq;
2335         unsigned long flags;
2336         enum i40iw_completion_notify cq_notify = IW_CQ_COMPL_EVENT;
2337
2338         iwcq = (struct i40iw_cq *)ibcq;
2339         ukcq = &iwcq->sc_cq.cq_uk;
2340         if (notify_flags == IB_CQ_SOLICITED)
2341                 cq_notify = IW_CQ_COMPL_SOLICITED;
2342         spin_lock_irqsave(&iwcq->lock, flags);
2343         ukcq->ops.iw_cq_request_notification(ukcq, cq_notify);
2344         spin_unlock_irqrestore(&iwcq->lock, flags);
2345         return 0;
2346 }
2347
2348 /**
2349  * i40iw_port_immutable - return port's immutable data
2350  * @ibdev: ib dev struct
2351  * @port_num: port number
2352  * @immutable: immutable data for the port return
2353  */
2354 static int i40iw_port_immutable(struct ib_device *ibdev, u8 port_num,
2355                                 struct ib_port_immutable *immutable)
2356 {
2357         struct ib_port_attr attr;
2358         int err;
2359
2360         err = i40iw_query_port(ibdev, port_num, &attr);
2361
2362         if (err)
2363                 return err;
2364
2365         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2366         immutable->gid_tbl_len = attr.gid_tbl_len;
2367         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
2368
2369         return 0;
2370 }
2371
2372 static const char * const i40iw_hw_stat_names[] = {
2373         // 32bit names
2374         [I40IW_HW_STAT_INDEX_IP4RXDISCARD] = "ip4InDiscards",
2375         [I40IW_HW_STAT_INDEX_IP4RXTRUNC] = "ip4InTruncatedPkts",
2376         [I40IW_HW_STAT_INDEX_IP4TXNOROUTE] = "ip4OutNoRoutes",
2377         [I40IW_HW_STAT_INDEX_IP6RXDISCARD] = "ip6InDiscards",
2378         [I40IW_HW_STAT_INDEX_IP6RXTRUNC] = "ip6InTruncatedPkts",
2379         [I40IW_HW_STAT_INDEX_IP6TXNOROUTE] = "ip6OutNoRoutes",
2380         [I40IW_HW_STAT_INDEX_TCPRTXSEG] = "tcpRetransSegs",
2381         [I40IW_HW_STAT_INDEX_TCPRXOPTERR] = "tcpInOptErrors",
2382         [I40IW_HW_STAT_INDEX_TCPRXPROTOERR] = "tcpInProtoErrors",
2383         // 64bit names
2384         [I40IW_HW_STAT_INDEX_IP4RXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
2385                 "ip4InOctets",
2386         [I40IW_HW_STAT_INDEX_IP4RXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2387                 "ip4InPkts",
2388         [I40IW_HW_STAT_INDEX_IP4RXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
2389                 "ip4InReasmRqd",
2390         [I40IW_HW_STAT_INDEX_IP4RXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2391                 "ip4InMcastPkts",
2392         [I40IW_HW_STAT_INDEX_IP4TXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
2393                 "ip4OutOctets",
2394         [I40IW_HW_STAT_INDEX_IP4TXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2395                 "ip4OutPkts",
2396         [I40IW_HW_STAT_INDEX_IP4TXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
2397                 "ip4OutSegRqd",
2398         [I40IW_HW_STAT_INDEX_IP4TXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2399                 "ip4OutMcastPkts",
2400         [I40IW_HW_STAT_INDEX_IP6RXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
2401                 "ip6InOctets",
2402         [I40IW_HW_STAT_INDEX_IP6RXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2403                 "ip6InPkts",
2404         [I40IW_HW_STAT_INDEX_IP6RXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
2405                 "ip6InReasmRqd",
2406         [I40IW_HW_STAT_INDEX_IP6RXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2407                 "ip6InMcastPkts",
2408         [I40IW_HW_STAT_INDEX_IP6TXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
2409                 "ip6OutOctets",
2410         [I40IW_HW_STAT_INDEX_IP6TXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2411                 "ip6OutPkts",
2412         [I40IW_HW_STAT_INDEX_IP6TXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
2413                 "ip6OutSegRqd",
2414         [I40IW_HW_STAT_INDEX_IP6TXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2415                 "ip6OutMcastPkts",
2416         [I40IW_HW_STAT_INDEX_TCPRXSEGS + I40IW_HW_STAT_INDEX_MAX_32] =
2417                 "tcpInSegs",
2418         [I40IW_HW_STAT_INDEX_TCPTXSEG + I40IW_HW_STAT_INDEX_MAX_32] =
2419                 "tcpOutSegs",
2420         [I40IW_HW_STAT_INDEX_RDMARXRDS + I40IW_HW_STAT_INDEX_MAX_32] =
2421                 "iwInRdmaReads",
2422         [I40IW_HW_STAT_INDEX_RDMARXSNDS + I40IW_HW_STAT_INDEX_MAX_32] =
2423                 "iwInRdmaSends",
2424         [I40IW_HW_STAT_INDEX_RDMARXWRS + I40IW_HW_STAT_INDEX_MAX_32] =
2425                 "iwInRdmaWrites",
2426         [I40IW_HW_STAT_INDEX_RDMATXRDS + I40IW_HW_STAT_INDEX_MAX_32] =
2427                 "iwOutRdmaReads",
2428         [I40IW_HW_STAT_INDEX_RDMATXSNDS + I40IW_HW_STAT_INDEX_MAX_32] =
2429                 "iwOutRdmaSends",
2430         [I40IW_HW_STAT_INDEX_RDMATXWRS + I40IW_HW_STAT_INDEX_MAX_32] =
2431                 "iwOutRdmaWrites",
2432         [I40IW_HW_STAT_INDEX_RDMAVBND + I40IW_HW_STAT_INDEX_MAX_32] =
2433                 "iwRdmaBnd",
2434         [I40IW_HW_STAT_INDEX_RDMAVINV + I40IW_HW_STAT_INDEX_MAX_32] =
2435                 "iwRdmaInv"
2436 };
2437
2438 static void i40iw_get_dev_fw_str(struct ib_device *dev, char *str,
2439                                  size_t str_len)
2440 {
2441         u32 firmware_version = I40IW_FW_VERSION;
2442
2443         snprintf(str, str_len, "%u.%u", firmware_version,
2444                        (firmware_version & 0x000000ff));
2445 }
2446
2447 /**
2448  * i40iw_alloc_hw_stats - Allocate a hw stats structure
2449  * @ibdev: device pointer from stack
2450  * @port_num: port number
2451  */
2452 static struct rdma_hw_stats *i40iw_alloc_hw_stats(struct ib_device *ibdev,
2453                                                   u8 port_num)
2454 {
2455         struct i40iw_device *iwdev = to_iwdev(ibdev);
2456         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
2457         int num_counters = I40IW_HW_STAT_INDEX_MAX_32 +
2458                 I40IW_HW_STAT_INDEX_MAX_64;
2459         unsigned long lifespan = RDMA_HW_STATS_DEFAULT_LIFESPAN;
2460
2461         BUILD_BUG_ON(ARRAY_SIZE(i40iw_hw_stat_names) !=
2462                      (I40IW_HW_STAT_INDEX_MAX_32 +
2463                       I40IW_HW_STAT_INDEX_MAX_64));
2464
2465         /*
2466          * PFs get the default update lifespan, but VFs only update once
2467          * per second
2468          */
2469         if (!dev->is_pf)
2470                 lifespan = 1000;
2471         return rdma_alloc_hw_stats_struct(i40iw_hw_stat_names, num_counters,
2472                                           lifespan);
2473 }
2474
2475 /**
2476  * i40iw_get_hw_stats - Populates the rdma_hw_stats structure
2477  * @ibdev: device pointer from stack
2478  * @stats: stats pointer from stack
2479  * @port_num: port number
2480  * @index: which hw counter the stack is requesting we update
2481  */
2482 static int i40iw_get_hw_stats(struct ib_device *ibdev,
2483                               struct rdma_hw_stats *stats,
2484                               u8 port_num, int index)
2485 {
2486         struct i40iw_device *iwdev = to_iwdev(ibdev);
2487         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
2488         struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
2489         struct i40iw_dev_hw_stats *hw_stats = &devstat->hw_stats;
2490         unsigned long flags;
2491
2492         if (dev->is_pf) {
2493                 spin_lock_irqsave(&devstat->stats_lock, flags);
2494                 devstat->ops.iw_hw_stat_read_all(devstat,
2495                         &devstat->hw_stats);
2496                 spin_unlock_irqrestore(&devstat->stats_lock, flags);
2497         } else {
2498                 if (i40iw_vchnl_vf_get_pe_stats(dev, &devstat->hw_stats))
2499                         return -ENOSYS;
2500         }
2501
2502         memcpy(&stats->value[0], &hw_stats, sizeof(*hw_stats));
2503
2504         return stats->num_counters;
2505 }
2506
2507 /**
2508  * i40iw_query_gid - Query port GID
2509  * @ibdev: device pointer from stack
2510  * @port: port number
2511  * @index: Entry index
2512  * @gid: Global ID
2513  */
2514 static int i40iw_query_gid(struct ib_device *ibdev,
2515                            u8 port,
2516                            int index,
2517                            union ib_gid *gid)
2518 {
2519         struct i40iw_device *iwdev = to_iwdev(ibdev);
2520
2521         memset(gid->raw, 0, sizeof(gid->raw));
2522         ether_addr_copy(gid->raw, iwdev->netdev->dev_addr);
2523         return 0;
2524 }
2525
2526 /**
2527  * i40iw_modify_port  Modify port properties
2528  * @ibdev: device pointer from stack
2529  * @port: port number
2530  * @port_modify_mask: mask for port modifications
2531  * @props: port properties
2532  */
2533 static int i40iw_modify_port(struct ib_device *ibdev,
2534                              u8 port,
2535                              int port_modify_mask,
2536                              struct ib_port_modify *props)
2537 {
2538         return -ENOSYS;
2539 }
2540
2541 /**
2542  * i40iw_query_pkey - Query partition key
2543  * @ibdev: device pointer from stack
2544  * @port: port number
2545  * @index: index of pkey
2546  * @pkey: pointer to store the pkey
2547  */
2548 static int i40iw_query_pkey(struct ib_device *ibdev,
2549                             u8 port,
2550                             u16 index,
2551                             u16 *pkey)
2552 {
2553         *pkey = 0;
2554         return 0;
2555 }
2556
2557 /**
2558  * i40iw_create_ah - create address handle
2559  * @ibpd: ptr of pd
2560  * @ah_attr: address handle attributes
2561  */
2562 static struct ib_ah *i40iw_create_ah(struct ib_pd *ibpd,
2563                                      struct ib_ah_attr *attr)
2564 {
2565         return ERR_PTR(-ENOSYS);
2566 }
2567
2568 /**
2569  * i40iw_destroy_ah - Destroy address handle
2570  * @ah: pointer to address handle
2571  */
2572 static int i40iw_destroy_ah(struct ib_ah *ah)
2573 {
2574         return -ENOSYS;
2575 }
2576
2577 /**
2578  * i40iw_init_rdma_device - initialization of iwarp device
2579  * @iwdev: iwarp device
2580  */
2581 static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev)
2582 {
2583         struct i40iw_ib_device *iwibdev;
2584         struct net_device *netdev = iwdev->netdev;
2585         struct pci_dev *pcidev = (struct pci_dev *)iwdev->hw.dev_context;
2586
2587         iwibdev = (struct i40iw_ib_device *)ib_alloc_device(sizeof(*iwibdev));
2588         if (!iwibdev) {
2589                 i40iw_pr_err("iwdev == NULL\n");
2590                 return NULL;
2591         }
2592         strlcpy(iwibdev->ibdev.name, "i40iw%d", IB_DEVICE_NAME_MAX);
2593         iwibdev->ibdev.owner = THIS_MODULE;
2594         iwdev->iwibdev = iwibdev;
2595         iwibdev->iwdev = iwdev;
2596
2597         iwibdev->ibdev.node_type = RDMA_NODE_RNIC;
2598         ether_addr_copy((u8 *)&iwibdev->ibdev.node_guid, netdev->dev_addr);
2599
2600         iwibdev->ibdev.uverbs_cmd_mask =
2601             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
2602             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
2603             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
2604             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
2605             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
2606             (1ull << IB_USER_VERBS_CMD_REG_MR) |
2607             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
2608             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2609             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
2610             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
2611             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
2612             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
2613             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
2614             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
2615             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
2616             (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
2617             (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
2618             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
2619             (1ull << IB_USER_VERBS_CMD_POST_RECV) |
2620             (1ull << IB_USER_VERBS_CMD_POST_SEND);
2621         iwibdev->ibdev.phys_port_cnt = 1;
2622         iwibdev->ibdev.num_comp_vectors = 1;
2623         iwibdev->ibdev.dma_device = &pcidev->dev;
2624         iwibdev->ibdev.dev.parent = &pcidev->dev;
2625         iwibdev->ibdev.query_port = i40iw_query_port;
2626         iwibdev->ibdev.modify_port = i40iw_modify_port;
2627         iwibdev->ibdev.query_pkey = i40iw_query_pkey;
2628         iwibdev->ibdev.query_gid = i40iw_query_gid;
2629         iwibdev->ibdev.alloc_ucontext = i40iw_alloc_ucontext;
2630         iwibdev->ibdev.dealloc_ucontext = i40iw_dealloc_ucontext;
2631         iwibdev->ibdev.mmap = i40iw_mmap;
2632         iwibdev->ibdev.alloc_pd = i40iw_alloc_pd;
2633         iwibdev->ibdev.dealloc_pd = i40iw_dealloc_pd;
2634         iwibdev->ibdev.create_qp = i40iw_create_qp;
2635         iwibdev->ibdev.modify_qp = i40iw_modify_qp;
2636         iwibdev->ibdev.query_qp = i40iw_query_qp;
2637         iwibdev->ibdev.destroy_qp = i40iw_destroy_qp;
2638         iwibdev->ibdev.create_cq = i40iw_create_cq;
2639         iwibdev->ibdev.destroy_cq = i40iw_destroy_cq;
2640         iwibdev->ibdev.get_dma_mr = i40iw_get_dma_mr;
2641         iwibdev->ibdev.reg_user_mr = i40iw_reg_user_mr;
2642         iwibdev->ibdev.dereg_mr = i40iw_dereg_mr;
2643         iwibdev->ibdev.alloc_hw_stats = i40iw_alloc_hw_stats;
2644         iwibdev->ibdev.get_hw_stats = i40iw_get_hw_stats;
2645         iwibdev->ibdev.query_device = i40iw_query_device;
2646         iwibdev->ibdev.create_ah = i40iw_create_ah;
2647         iwibdev->ibdev.destroy_ah = i40iw_destroy_ah;
2648         iwibdev->ibdev.drain_sq = i40iw_drain_sq;
2649         iwibdev->ibdev.drain_rq = i40iw_drain_rq;
2650         iwibdev->ibdev.alloc_mr = i40iw_alloc_mr;
2651         iwibdev->ibdev.map_mr_sg = i40iw_map_mr_sg;
2652         iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL);
2653         if (!iwibdev->ibdev.iwcm) {
2654                 ib_dealloc_device(&iwibdev->ibdev);
2655                 i40iw_pr_err("iwcm == NULL\n");
2656                 return NULL;
2657         }
2658
2659         iwibdev->ibdev.iwcm->add_ref = i40iw_add_ref;
2660         iwibdev->ibdev.iwcm->rem_ref = i40iw_rem_ref;
2661         iwibdev->ibdev.iwcm->get_qp = i40iw_get_qp;
2662         iwibdev->ibdev.iwcm->connect = i40iw_connect;
2663         iwibdev->ibdev.iwcm->accept = i40iw_accept;
2664         iwibdev->ibdev.iwcm->reject = i40iw_reject;
2665         iwibdev->ibdev.iwcm->create_listen = i40iw_create_listen;
2666         iwibdev->ibdev.iwcm->destroy_listen = i40iw_destroy_listen;
2667         memcpy(iwibdev->ibdev.iwcm->ifname, netdev->name,
2668                sizeof(iwibdev->ibdev.iwcm->ifname));
2669         iwibdev->ibdev.get_port_immutable   = i40iw_port_immutable;
2670         iwibdev->ibdev.get_dev_fw_str       = i40iw_get_dev_fw_str;
2671         iwibdev->ibdev.poll_cq = i40iw_poll_cq;
2672         iwibdev->ibdev.req_notify_cq = i40iw_req_notify_cq;
2673         iwibdev->ibdev.post_send = i40iw_post_send;
2674         iwibdev->ibdev.post_recv = i40iw_post_recv;
2675
2676         return iwibdev;
2677 }
2678
2679 /**
2680  * i40iw_port_ibevent - indicate port event
2681  * @iwdev: iwarp device
2682  */
2683 void i40iw_port_ibevent(struct i40iw_device *iwdev)
2684 {
2685         struct i40iw_ib_device *iwibdev = iwdev->iwibdev;
2686         struct ib_event event;
2687
2688         event.device = &iwibdev->ibdev;
2689         event.element.port_num = 1;
2690         event.event = iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2691         ib_dispatch_event(&event);
2692 }
2693
2694 /**
2695  * i40iw_unregister_rdma_device - unregister of iwarp from IB
2696  * @iwibdev: rdma device ptr
2697  */
2698 static void i40iw_unregister_rdma_device(struct i40iw_ib_device *iwibdev)
2699 {
2700         int i;
2701
2702         for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i)
2703                 device_remove_file(&iwibdev->ibdev.dev,
2704                                    i40iw_dev_attributes[i]);
2705         ib_unregister_device(&iwibdev->ibdev);
2706 }
2707
2708 /**
2709  * i40iw_destroy_rdma_device - destroy rdma device and free resources
2710  * @iwibdev: IB device ptr
2711  */
2712 void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev)
2713 {
2714         if (!iwibdev)
2715                 return;
2716
2717         i40iw_unregister_rdma_device(iwibdev);
2718         kfree(iwibdev->ibdev.iwcm);
2719         iwibdev->ibdev.iwcm = NULL;
2720         ib_dealloc_device(&iwibdev->ibdev);
2721 }
2722
2723 /**
2724  * i40iw_register_rdma_device - register iwarp device to IB
2725  * @iwdev: iwarp device
2726  */
2727 int i40iw_register_rdma_device(struct i40iw_device *iwdev)
2728 {
2729         int i, ret;
2730         struct i40iw_ib_device *iwibdev;
2731
2732         iwdev->iwibdev = i40iw_init_rdma_device(iwdev);
2733         if (!iwdev->iwibdev)
2734                 return -ENOMEM;
2735         iwibdev = iwdev->iwibdev;
2736
2737         ret = ib_register_device(&iwibdev->ibdev, NULL);
2738         if (ret)
2739                 goto error;
2740
2741         for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i) {
2742                 ret =
2743                     device_create_file(&iwibdev->ibdev.dev,
2744                                        i40iw_dev_attributes[i]);
2745                 if (ret) {
2746                         while (i > 0) {
2747                                 i--;
2748                                 device_remove_file(&iwibdev->ibdev.dev, i40iw_dev_attributes[i]);
2749                         }
2750                         ib_unregister_device(&iwibdev->ibdev);
2751                         goto error;
2752                 }
2753         }
2754         return 0;
2755 error:
2756         kfree(iwdev->iwibdev->ibdev.iwcm);
2757         iwdev->iwibdev->ibdev.iwcm = NULL;
2758         ib_dealloc_device(&iwdev->iwibdev->ibdev);
2759         return ret;
2760 }