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->vendor_id;
  67         props->vendor_part_id = iwdev->vendor_part_id;
  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 = 1;
  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         return 0;
  83 }
  84
  85 /**
  86  * i40iw_query_port - get port attrubutes
  87  * @ibdev: device pointer from stack
  88  * @port: port number for query
  89  * @props: returning device attributes
  90  */
  91 static int i40iw_query_port(struct ib_device *ibdev,
  92                             u8 port,
  93                             struct ib_port_attr *props)
  94 {
  95         struct i40iw_device *iwdev = to_iwdev(ibdev);
  96         struct net_device *netdev = iwdev->netdev;
  97
  98         memset(props, 0, sizeof(*props));
  99
 100         props->max_mtu = IB_MTU_4096;
 101         if (netdev->mtu >= 4096)
 102                 props->active_mtu = IB_MTU_4096;
 103         else if (netdev->mtu >= 2048)
 104                 props->active_mtu = IB_MTU_2048;
 105         else if (netdev->mtu >= 1024)
 106                 props->active_mtu = IB_MTU_1024;
 107         else if (netdev->mtu >= 512)
 108                 props->active_mtu = IB_MTU_512;
 109         else
 110                 props->active_mtu = IB_MTU_256;
 111
 112         props->lid = 1;
 113         if (netif_carrier_ok(iwdev->netdev))
 114                 props->state = IB_PORT_ACTIVE;
 115         else
 116                 props->state = IB_PORT_DOWN;
 117         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 118                 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 119         props->gid_tbl_len = 1;
 120         props->pkey_tbl_len = 1;
 121         props->active_width = IB_WIDTH_4X;
 122         props->active_speed = 1;
 123         props->max_msg_sz = 0x80000000;
 124         return 0;
 125 }
 126
 127 /**
 128  * i40iw_alloc_ucontext - Allocate the user context data structure
 129  * @ibdev: device pointer from stack
 130  * @udata: user data
 131  *
 132  * This keeps track of all objects associated with a particular
 133  * user-mode client.
 134  */
 135 static struct ib_ucontext *i40iw_alloc_ucontext(struct ib_device *ibdev,
 136                                                 struct ib_udata *udata)
 137 {
 138         struct i40iw_device *iwdev = to_iwdev(ibdev);
 139         struct i40iw_alloc_ucontext_req req;
 140         struct i40iw_alloc_ucontext_resp uresp;
 141         struct i40iw_ucontext *ucontext;
 142
 143         if (ib_copy_from_udata(&req, udata, sizeof(req)))
 144                 return ERR_PTR(-EINVAL);
 145
 146         if (req.userspace_ver != I40IW_ABI_USERSPACE_VER) {
 147                 i40iw_pr_err("Invalid userspace driver version detected. Detected version %d, should be %d\n",
 148                              req.userspace_ver, I40IW_ABI_USERSPACE_VER);
 149                 return ERR_PTR(-EINVAL);
 150         }
 151
 152         memset(&uresp, 0, sizeof(uresp));
 153         uresp.max_qps = iwdev->max_qp;
 154         uresp.max_pds = iwdev->max_pd;
 155         uresp.wq_size = iwdev->max_qp_wr * 2;
 156         uresp.kernel_ver = I40IW_ABI_KERNEL_VER;
 157
 158         ucontext = kzalloc(sizeof(*ucontext), GFP_KERNEL);
 159         if (!ucontext)
 160                 return ERR_PTR(-ENOMEM);
 161
 162         ucontext->iwdev = iwdev;
 163
 164         if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 165                 kfree(ucontext);
 166                 return ERR_PTR(-EFAULT);
 167         }
 168
 169         INIT_LIST_HEAD(&ucontext->cq_reg_mem_list);
 170         spin_lock_init(&ucontext->cq_reg_mem_list_lock);
 171         INIT_LIST_HEAD(&ucontext->qp_reg_mem_list);
 172         spin_lock_init(&ucontext->qp_reg_mem_list_lock);
 173
 174         return &ucontext->ibucontext;
 175 }
 176
 177 /**
 178  * i40iw_dealloc_ucontext - deallocate the user context data structure
 179  * @context: user context created during alloc
 180  */
 181 static int i40iw_dealloc_ucontext(struct ib_ucontext *context)
 182 {
 183         struct i40iw_ucontext *ucontext = to_ucontext(context);
 184         unsigned long flags;
 185
 186         spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
 187         if (!list_empty(&ucontext->cq_reg_mem_list)) {
 188                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 189                 return -EBUSY;
 190         }
 191         spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 192         spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
 193         if (!list_empty(&ucontext->qp_reg_mem_list)) {
 194                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
 195                 return -EBUSY;
 196         }
 197         spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
 198
 199         kfree(ucontext);
 200         return 0;
 201 }
 202
 203 /**
 204  * i40iw_mmap - user memory map
 205  * @context: context created during alloc
 206  * @vma: kernel info for user memory map
 207  */
 208 static int i40iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 209 {
 210         struct i40iw_ucontext *ucontext;
 211         u64 db_addr_offset;
 212         u64 push_offset;
 213
 214         ucontext = to_ucontext(context);
 215         if (ucontext->iwdev->sc_dev.is_pf) {
 216                 db_addr_offset = I40IW_DB_ADDR_OFFSET;
 217                 push_offset = I40IW_PUSH_OFFSET;
 218                 if (vma->vm_pgoff)
 219                         vma->vm_pgoff += I40IW_PF_FIRST_PUSH_PAGE_INDEX - 1;
 220         } else {
 221                 db_addr_offset = I40IW_VF_DB_ADDR_OFFSET;
 222                 push_offset = I40IW_VF_PUSH_OFFSET;
 223                 if (vma->vm_pgoff)
 224                         vma->vm_pgoff += I40IW_VF_FIRST_PUSH_PAGE_INDEX - 1;
 225         }
 226
 227         vma->vm_pgoff += db_addr_offset >> PAGE_SHIFT;
 228
 229         if (vma->vm_pgoff == (db_addr_offset >> PAGE_SHIFT)) {
 230                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 231                 vma->vm_private_data = ucontext;
 232         } else {
 233                 if ((vma->vm_pgoff - (push_offset >> PAGE_SHIFT)) % 2)
 234                         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 235                 else
 236                         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 237         }
 238
 239         if (io_remap_pfn_range(vma, vma->vm_start,
 240                                vma->vm_pgoff + (pci_resource_start(ucontext->iwdev->ldev->pcidev, 0) >> PAGE_SHIFT),
 241                                PAGE_SIZE, vma->vm_page_prot))
 242                 return -EAGAIN;
 243
 244         return 0;
 245 }
 246
 247 /**
 248  * i40iw_alloc_push_page - allocate a push page for qp
 249  * @iwdev: iwarp device
 250  * @qp: hardware control qp
 251  */
 252 static void i40iw_alloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
 253 {
 254         struct i40iw_cqp_request *cqp_request;
 255         struct cqp_commands_info *cqp_info;
 256         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 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 = dev->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         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 295         enum i40iw_status_code status;
 296
 297         if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX)
 298                 return;
 299
 300         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 301         if (!cqp_request)
 302                 return;
 303
 304         cqp_info = &cqp_request->info;
 305         cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
 306         cqp_info->post_sq = 1;
 307
 308         cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx;
 309         cqp_info->in.u.manage_push_page.info.qs_handle = dev->qs_handle;
 310         cqp_info->in.u.manage_push_page.info.free_page = 1;
 311         cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
 312         cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
 313
 314         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 315         if (!status)
 316                 qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
 317         else
 318                 i40iw_pr_err("CQP-OP Push page fail");
 319 }
 320
 321 /**
 322  * i40iw_alloc_pd - allocate protection domain
 323  * @ibdev: device pointer from stack
 324  * @context: user context created during alloc
 325  * @udata: user data
 326  */
 327 static struct ib_pd *i40iw_alloc_pd(struct ib_device *ibdev,
 328                                     struct ib_ucontext *context,
 329                                     struct ib_udata *udata)
 330 {
 331         struct i40iw_pd *iwpd;
 332         struct i40iw_device *iwdev = to_iwdev(ibdev);
 333         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 334         struct i40iw_alloc_pd_resp uresp;
 335         struct i40iw_sc_pd *sc_pd;
 336         u32 pd_id = 0;
 337         int err;
 338
 339         err = i40iw_alloc_resource(iwdev, iwdev->allocated_pds,
 340                                    iwdev->max_pd, &pd_id, &iwdev->next_pd);
 341         if (err) {
 342                 i40iw_pr_err("alloc resource failed\n");
 343                 return ERR_PTR(err);
 344         }
 345
 346         iwpd = kzalloc(sizeof(*iwpd), GFP_KERNEL);
 347         if (!iwpd) {
 348                 err = -ENOMEM;
 349                 goto free_res;
 350         }
 351
 352         sc_pd = &iwpd->sc_pd;
 353         dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id);
 354
 355         if (context) {
 356                 memset(&uresp, 0, sizeof(uresp));
 357                 uresp.pd_id = pd_id;
 358                 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 359                         err = -EFAULT;
 360                         goto error;
 361                 }
 362         }
 363
 364         i40iw_add_pdusecount(iwpd);
 365         return &iwpd->ibpd;
 366 error:
 367         kfree(iwpd);
 368 free_res:
 369         i40iw_free_resource(iwdev, iwdev->allocated_pds, pd_id);
 370         return ERR_PTR(err);
 371 }
 372
 373 /**
 374  * i40iw_dealloc_pd - deallocate pd
 375  * @ibpd: ptr of pd to be deallocated
 376  */
 377 static int i40iw_dealloc_pd(struct ib_pd *ibpd)
 378 {
 379         struct i40iw_pd *iwpd = to_iwpd(ibpd);
 380         struct i40iw_device *iwdev = to_iwdev(ibpd->device);
 381
 382         i40iw_rem_pdusecount(iwpd, iwdev);
 383         return 0;
 384 }
 385
 386 /**
 387  * i40iw_qp_roundup - return round up qp ring size
 388  * @wr_ring_size: ring size to round up
 389  */
 390 static int i40iw_qp_roundup(u32 wr_ring_size)
 391 {
 392         int scount = 1;
 393
 394         if (wr_ring_size < I40IWQP_SW_MIN_WQSIZE)
 395                 wr_ring_size = I40IWQP_SW_MIN_WQSIZE;
 396
 397         for (wr_ring_size--; scount <= 16; scount *= 2)
 398                 wr_ring_size |= wr_ring_size >> scount;
 399         return ++wr_ring_size;
 400 }
 401
 402 /**
 403  * i40iw_get_pbl - Retrieve pbl from a list given a virtual
 404  * address
 405  * @va: user virtual address
 406  * @pbl_list: pbl list to search in (QP's or CQ's)
 407  */
 408 static struct i40iw_pbl *i40iw_get_pbl(unsigned long va,
 409                                        struct list_head *pbl_list)
 410 {
 411         struct i40iw_pbl *iwpbl;
 412
 413         list_for_each_entry(iwpbl, pbl_list, list) {
 414                 if (iwpbl->user_base == va) {
 415                         list_del(&iwpbl->list);
 416                         return iwpbl;
 417                 }
 418         }
 419         return NULL;
 420 }
 421
 422 /**
 423  * i40iw_free_qp_resources - free up memory resources for qp
 424  * @iwdev: iwarp device
 425  * @iwqp: qp ptr (user or kernel)
 426  * @qp_num: qp number assigned
 427  */
 428 void i40iw_free_qp_resources(struct i40iw_device *iwdev,
 429                              struct i40iw_qp *iwqp,
 430                              u32 qp_num)
 431 {
 432         i40iw_dealloc_push_page(iwdev, &iwqp->sc_qp);
 433         if (qp_num)
 434                 i40iw_free_resource(iwdev, iwdev->allocated_qps, qp_num);
 435         i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->q2_ctx_mem);
 436         i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->kqp.dma_mem);
 437         kfree(iwqp->kqp.wrid_mem);
 438         iwqp->kqp.wrid_mem = NULL;
 439         kfree(iwqp->allocated_buffer);
 440         iwqp->allocated_buffer = NULL;
 441 }
 442
 443 /**
 444  * i40iw_clean_cqes - clean cq entries for qp
 445  * @iwqp: qp ptr (user or kernel)
 446  * @iwcq: cq ptr
 447  */
 448 static void i40iw_clean_cqes(struct i40iw_qp *iwqp, struct i40iw_cq *iwcq)
 449 {
 450         struct i40iw_cq_uk *ukcq = &iwcq->sc_cq.cq_uk;
 451
 452         ukcq->ops.iw_cq_clean(&iwqp->sc_qp.qp_uk, ukcq);
 453 }
 454
 455 /**
 456  * i40iw_destroy_qp - destroy qp
 457  * @ibqp: qp's ib pointer also to get to device's qp address
 458  */
 459 static int i40iw_destroy_qp(struct ib_qp *ibqp)
 460 {
 461         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 462
 463         iwqp->destroyed = 1;
 464
 465         if (iwqp->ibqp_state >= IB_QPS_INIT && iwqp->ibqp_state < IB_QPS_RTS)
 466                 i40iw_next_iw_state(iwqp, I40IW_QP_STATE_ERROR, 0, 0, 0);
 467
 468         if (!iwqp->user_mode) {
 469                 if (iwqp->iwscq) {
 470                         i40iw_clean_cqes(iwqp, iwqp->iwscq);
 471                         if (iwqp->iwrcq != iwqp->iwscq)
 472                                 i40iw_clean_cqes(iwqp, iwqp->iwrcq);
 473                 }
 474         }
 475
 476         i40iw_rem_ref(&iwqp->ibqp);
 477         return 0;
 478 }
 479
 480 /**
 481  * i40iw_setup_virt_qp - setup for allocation of virtual qp
 482  * @dev: iwarp device
 483  * @qp: qp ptr
 484  * @init_info: initialize info to return
 485  */
 486 static int i40iw_setup_virt_qp(struct i40iw_device *iwdev,
 487                                struct i40iw_qp *iwqp,
 488                                struct i40iw_qp_init_info *init_info)
 489 {
 490         struct i40iw_pbl *iwpbl = iwqp->iwpbl;
 491         struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
 492
 493         iwqp->page = qpmr->sq_page;
 494         init_info->shadow_area_pa = cpu_to_le64(qpmr->shadow);
 495         if (iwpbl->pbl_allocated) {
 496                 init_info->virtual_map = true;
 497                 init_info->sq_pa = qpmr->sq_pbl.idx;
 498                 init_info->rq_pa = qpmr->rq_pbl.idx;
 499         } else {
 500                 init_info->sq_pa = qpmr->sq_pbl.addr;
 501                 init_info->rq_pa = qpmr->rq_pbl.addr;
 502         }
 503         return 0;
 504 }
 505
 506 /**
 507  * i40iw_setup_kmode_qp - setup initialization for kernel mode qp
 508  * @iwdev: iwarp device
 509  * @iwqp: qp ptr (user or kernel)
 510  * @info: initialize info to return
 511  */
 512 static int i40iw_setup_kmode_qp(struct i40iw_device *iwdev,
 513                                 struct i40iw_qp *iwqp,
 514                                 struct i40iw_qp_init_info *info)
 515 {
 516         struct i40iw_dma_mem *mem = &iwqp->kqp.dma_mem;
 517         u32 sqdepth, rqdepth;
 518         u32 sq_size, rq_size;
 519         u8 sqshift, rqshift;
 520         u32 size;
 521         enum i40iw_status_code status;
 522         struct i40iw_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
 523
 524         ukinfo->max_sq_frag_cnt = I40IW_MAX_WQ_FRAGMENT_COUNT;
 525
 526         sq_size = i40iw_qp_roundup(ukinfo->sq_size + 1);
 527         rq_size = i40iw_qp_roundup(ukinfo->rq_size + 1);
 528
 529         status = i40iw_get_wqe_shift(sq_size, ukinfo->max_sq_frag_cnt, &sqshift);
 530         if (!status)
 531                 status = i40iw_get_wqe_shift(rq_size, ukinfo->max_rq_frag_cnt, &rqshift);
 532
 533         if (status)
 534                 return -ENOSYS;
 535
 536         sqdepth = sq_size << sqshift;
 537         rqdepth = rq_size << rqshift;
 538
 539         size = sqdepth * sizeof(struct i40iw_sq_uk_wr_trk_info) + (rqdepth << 3);
 540         iwqp->kqp.wrid_mem = kzalloc(size, GFP_KERNEL);
 541
 542         ukinfo->sq_wrtrk_array = (struct i40iw_sq_uk_wr_trk_info *)iwqp->kqp.wrid_mem;
 543         if (!ukinfo->sq_wrtrk_array)
 544                 return -ENOMEM;
 545
 546         ukinfo->rq_wrid_array = (u64 *)&ukinfo->sq_wrtrk_array[sqdepth];
 547
 548         size = (sqdepth + rqdepth) * I40IW_QP_WQE_MIN_SIZE;
 549         size += (I40IW_SHADOW_AREA_SIZE << 3);
 550
 551         status = i40iw_allocate_dma_mem(iwdev->sc_dev.hw, mem, size, 256);
 552         if (status) {
 553                 kfree(ukinfo->sq_wrtrk_array);
 554                 ukinfo->sq_wrtrk_array = NULL;
 555                 return -ENOMEM;
 556         }
 557
 558         ukinfo->sq = mem->va;
 559         info->sq_pa = mem->pa;
 560
 561         ukinfo->rq = &ukinfo->sq[sqdepth];
 562         info->rq_pa = info->sq_pa + (sqdepth * I40IW_QP_WQE_MIN_SIZE);
 563
 564         ukinfo->shadow_area = ukinfo->rq[rqdepth].elem;
 565         info->shadow_area_pa = info->rq_pa + (rqdepth * I40IW_QP_WQE_MIN_SIZE);
 566
 567         ukinfo->sq_size = sq_size;
 568         ukinfo->rq_size = rq_size;
 569         ukinfo->qp_id = iwqp->ibqp.qp_num;
 570         return 0;
 571 }
 572
 573 /**
 574  * i40iw_create_qp - create qp
 575  * @ibpd: ptr of pd
 576  * @init_attr: attributes for qp
 577  * @udata: user data for create qp
 578  */
 579 static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
 580                                      struct ib_qp_init_attr *init_attr,
 581                                      struct ib_udata *udata)
 582 {
 583         struct i40iw_pd *iwpd = to_iwpd(ibpd);
 584         struct i40iw_device *iwdev = to_iwdev(ibpd->device);
 585         struct i40iw_cqp *iwcqp = &iwdev->cqp;
 586         struct i40iw_qp *iwqp;
 587         struct i40iw_ucontext *ucontext;
 588         struct i40iw_create_qp_req req;
 589         struct i40iw_create_qp_resp uresp;
 590         u32 qp_num = 0;
 591         void *mem;
 592         enum i40iw_status_code ret;
 593         int err_code;
 594         int sq_size;
 595         int rq_size;
 596         struct i40iw_sc_qp *qp;
 597         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 598         struct i40iw_qp_init_info init_info;
 599         struct i40iw_create_qp_info *qp_info;
 600         struct i40iw_cqp_request *cqp_request;
 601         struct cqp_commands_info *cqp_info;
 602
 603         struct i40iw_qp_host_ctx_info *ctx_info;
 604         struct i40iwarp_offload_info *iwarp_info;
 605         unsigned long flags;
 606
 607         if (init_attr->create_flags)
 608                 return ERR_PTR(-EINVAL);
 609         if (init_attr->cap.max_inline_data > I40IW_MAX_INLINE_DATA_SIZE)
 610                 init_attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
 611
 612         memset(&init_info, 0, sizeof(init_info));
 613
 614         sq_size = init_attr->cap.max_send_wr;
 615         rq_size = init_attr->cap.max_recv_wr;
 616
 617         init_info.qp_uk_init_info.sq_size = sq_size;
 618         init_info.qp_uk_init_info.rq_size = rq_size;
 619         init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge;
 620         init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge;
 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 = -ENOSYS;
 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->priv_mode_en = true;
 727         iwarp_info->ddp_ver = 1;
 728         iwarp_info->rdmap_ver = 1;
 729
 730         ctx_info->iwarp_info_valid = true;
 731         ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
 732         ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
 733         if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX) {
 734                 ctx_info->push_mode_en = false;
 735         } else {
 736                 ctx_info->push_mode_en = true;
 737                 ctx_info->push_idx = qp->push_idx;
 738         }
 739
 740         ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
 741                                              (u64 *)iwqp->host_ctx.va,
 742                                              ctx_info);
 743         ctx_info->iwarp_info_valid = false;
 744         cqp_request = i40iw_get_cqp_request(iwcqp, true);
 745         if (!cqp_request) {
 746                 err_code = -ENOMEM;
 747                 goto error;
 748         }
 749         cqp_info = &cqp_request->info;
 750         qp_info = &cqp_request->info.in.u.qp_create.info;
 751
 752         memset(qp_info, 0, sizeof(*qp_info));
 753
 754         qp_info->cq_num_valid = true;
 755         qp_info->next_iwarp_state = I40IW_QP_STATE_IDLE;
 756
 757         cqp_info->cqp_cmd = OP_QP_CREATE;
 758         cqp_info->post_sq = 1;
 759         cqp_info->in.u.qp_create.qp = qp;
 760         cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
 761         ret = i40iw_handle_cqp_op(iwdev, cqp_request);
 762         if (ret) {
 763                 i40iw_pr_err("CQP-OP QP create fail");
 764                 err_code = -EACCES;
 765                 goto error;
 766         }
 767
 768         i40iw_add_ref(&iwqp->ibqp);
 769         spin_lock_init(&iwqp->lock);
 770         iwqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? 1 : 0;
 771         iwdev->qp_table[qp_num] = iwqp;
 772         i40iw_add_pdusecount(iwqp->iwpd);
 773         if (ibpd->uobject && udata) {
 774                 memset(&uresp, 0, sizeof(uresp));
 775                 uresp.actual_sq_size = sq_size;
 776                 uresp.actual_rq_size = rq_size;
 777                 uresp.qp_id = qp_num;
 778                 uresp.push_idx = qp->push_idx;
 779                 err_code = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
 780                 if (err_code) {
 781                         i40iw_pr_err("copy_to_udata failed\n");
 782                         i40iw_destroy_qp(&iwqp->ibqp);
 783                            /* let the completion of the qp destroy free the qp */
 784                         return ERR_PTR(err_code);
 785                 }
 786         }
 787
 788         return &iwqp->ibqp;
 789 error:
 790         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 791         kfree(mem);
 792         return ERR_PTR(err_code);
 793 }
 794
 795 /**
 796  * i40iw_query - query qp attributes
 797  * @ibqp: qp pointer
 798  * @attr: attributes pointer
 799  * @attr_mask: Not used
 800  * @init_attr: qp attributes to return
 801  */
 802 static int i40iw_query_qp(struct ib_qp *ibqp,
 803                           struct ib_qp_attr *attr,
 804                           int attr_mask,
 805                           struct ib_qp_init_attr *init_attr)
 806 {
 807         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 808         struct i40iw_sc_qp *qp = &iwqp->sc_qp;
 809
 810         attr->qp_access_flags = 0;
 811         attr->cap.max_send_wr = qp->qp_uk.sq_size;
 812         attr->cap.max_recv_wr = qp->qp_uk.rq_size;
 813         attr->cap.max_recv_sge = 1;
 814         attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
 815         init_attr->event_handler = iwqp->ibqp.event_handler;
 816         init_attr->qp_context = iwqp->ibqp.qp_context;
 817         init_attr->send_cq = iwqp->ibqp.send_cq;
 818         init_attr->recv_cq = iwqp->ibqp.recv_cq;
 819         init_attr->srq = iwqp->ibqp.srq;
 820         init_attr->cap = attr->cap;
 821         return 0;
 822 }
 823
 824 /**
 825  * i40iw_hw_modify_qp - setup cqp for modify qp
 826  * @iwdev: iwarp device
 827  * @iwqp: qp ptr (user or kernel)
 828  * @info: info for modify qp
 829  * @wait: flag to wait or not for modify qp completion
 830  */
 831 void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
 832                         struct i40iw_modify_qp_info *info, bool wait)
 833 {
 834         enum i40iw_status_code status;
 835         struct i40iw_cqp_request *cqp_request;
 836         struct cqp_commands_info *cqp_info;
 837         struct i40iw_modify_qp_info *m_info;
 838
 839         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, wait);
 840         if (!cqp_request)
 841                 return;
 842
 843         cqp_info = &cqp_request->info;
 844         m_info = &cqp_info->in.u.qp_modify.info;
 845         memcpy(m_info, info, sizeof(*m_info));
 846         cqp_info->cqp_cmd = OP_QP_MODIFY;
 847         cqp_info->post_sq = 1;
 848         cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
 849         cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
 850         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 851         if (status)
 852                 i40iw_pr_err("CQP-OP Modify QP fail");
 853 }
 854
 855 /**
 856  * i40iw_modify_qp - modify qp request
 857  * @ibqp: qp's pointer for modify
 858  * @attr: access attributes
 859  * @attr_mask: state mask
 860  * @udata: user data
 861  */
 862 int i40iw_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 863                     int attr_mask, struct ib_udata *udata)
 864 {
 865         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 866         struct i40iw_device *iwdev = iwqp->iwdev;
 867         struct i40iw_qp_host_ctx_info *ctx_info;
 868         struct i40iwarp_offload_info *iwarp_info;
 869         struct i40iw_modify_qp_info info;
 870         u8 issue_modify_qp = 0;
 871         u8 dont_wait = 0;
 872         u32 err;
 873         unsigned long flags;
 874
 875         memset(&info, 0, sizeof(info));
 876         ctx_info = &iwqp->ctx_info;
 877         iwarp_info = &iwqp->iwarp_info;
 878
 879         spin_lock_irqsave(&iwqp->lock, flags);
 880
 881         if (attr_mask & IB_QP_STATE) {
 882                 switch (attr->qp_state) {
 883                 case IB_QPS_INIT:
 884                 case IB_QPS_RTR:
 885                         if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_IDLE) {
 886                                 err = -EINVAL;
 887                                 goto exit;
 888                         }
 889                         if (iwqp->iwarp_state == I40IW_QP_STATE_INVALID) {
 890                                 info.next_iwarp_state = I40IW_QP_STATE_IDLE;
 891                                 issue_modify_qp = 1;
 892                         }
 893                         break;
 894                 case IB_QPS_RTS:
 895                         if ((iwqp->iwarp_state > (u32)I40IW_QP_STATE_RTS) ||
 896                             (!iwqp->cm_id)) {
 897                                 err = -EINVAL;
 898                                 goto exit;
 899                         }
 900
 901                         issue_modify_qp = 1;
 902                         iwqp->hw_tcp_state = I40IW_TCP_STATE_ESTABLISHED;
 903                         iwqp->hte_added = 1;
 904                         info.next_iwarp_state = I40IW_QP_STATE_RTS;
 905                         info.tcp_ctx_valid = true;
 906                         info.ord_valid = true;
 907                         info.arp_cache_idx_valid = true;
 908                         info.cq_num_valid = true;
 909                         break;
 910                 case IB_QPS_SQD:
 911                         if (iwqp->hw_iwarp_state > (u32)I40IW_QP_STATE_RTS) {
 912                                 err = 0;
 913                                 goto exit;
 914                         }
 915                         if ((iwqp->iwarp_state == (u32)I40IW_QP_STATE_CLOSING) ||
 916                             (iwqp->iwarp_state < (u32)I40IW_QP_STATE_RTS)) {
 917                                 err = 0;
 918                                 goto exit;
 919                         }
 920                         if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_CLOSING) {
 921                                 err = -EINVAL;
 922                                 goto exit;
 923                         }
 924                         info.next_iwarp_state = I40IW_QP_STATE_CLOSING;
 925                         issue_modify_qp = 1;
 926                         break;
 927                 case IB_QPS_SQE:
 928                         if (iwqp->iwarp_state >= (u32)I40IW_QP_STATE_TERMINATE) {
 929                                 err = -EINVAL;
 930                                 goto exit;
 931                         }
 932                         info.next_iwarp_state = I40IW_QP_STATE_TERMINATE;
 933                         issue_modify_qp = 1;
 934                         break;
 935                 case IB_QPS_ERR:
 936                 case IB_QPS_RESET:
 937                         if (iwqp->iwarp_state == (u32)I40IW_QP_STATE_ERROR) {
 938                                 err = -EINVAL;
 939                                 goto exit;
 940                         }
 941                         if (iwqp->sc_qp.term_flags)
 942                                 del_timer(&iwqp->terminate_timer);
 943                         info.next_iwarp_state = I40IW_QP_STATE_ERROR;
 944                         if ((iwqp->hw_tcp_state > I40IW_TCP_STATE_CLOSED) &&
 945                             iwdev->iw_status &&
 946                             (iwqp->hw_tcp_state != I40IW_TCP_STATE_TIME_WAIT))
 947                                 info.reset_tcp_conn = true;
 948                         else
 949                                 dont_wait = 1;
 950                         issue_modify_qp = 1;
 951                         info.next_iwarp_state = I40IW_QP_STATE_ERROR;
 952                         break;
 953                 default:
 954                         err = -EINVAL;
 955                         goto exit;
 956                 }
 957
 958                 iwqp->ibqp_state = attr->qp_state;
 959
 960                 if (issue_modify_qp)
 961                         iwqp->iwarp_state = info.next_iwarp_state;
 962                 else
 963                         info.next_iwarp_state = iwqp->iwarp_state;
 964         }
 965         if (attr_mask & IB_QP_ACCESS_FLAGS) {
 966                 ctx_info->iwarp_info_valid = true;
 967                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
 968                         iwarp_info->wr_rdresp_en = true;
 969                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
 970                         iwarp_info->wr_rdresp_en = true;
 971                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
 972                         iwarp_info->rd_enable = true;
 973                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND)
 974                         iwarp_info->bind_en = true;
 975
 976                 if (iwqp->user_mode) {
 977                         iwarp_info->rd_enable = true;
 978                         iwarp_info->wr_rdresp_en = true;
 979                         iwarp_info->priv_mode_en = false;
 980                 }
 981         }
 982
 983         if (ctx_info->iwarp_info_valid) {
 984                 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 985                 int ret;
 986
 987                 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
 988                 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
 989                 ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
 990                                                      (u64 *)iwqp->host_ctx.va,
 991                                                      ctx_info);
 992                 if (ret) {
 993                         i40iw_pr_err("setting QP context\n");
 994                         err = -EINVAL;
 995                         goto exit;
 996                 }
 997         }
 998
 999         spin_unlock_irqrestore(&iwqp->lock, flags);
1000
1001         if (issue_modify_qp)
1002                 i40iw_hw_modify_qp(iwdev, iwqp, &info, true);
1003
1004         if (issue_modify_qp && (iwqp->ibqp_state > IB_QPS_RTS)) {
1005                 if (dont_wait) {
1006                         if (iwqp->cm_id && iwqp->hw_tcp_state) {
1007                                 spin_lock_irqsave(&iwqp->lock, flags);
1008                                 iwqp->hw_tcp_state = I40IW_TCP_STATE_CLOSED;
1009                                 iwqp->last_aeq = I40IW_AE_RESET_SENT;
1010                                 spin_unlock_irqrestore(&iwqp->lock, flags);
1011                         }
1012                 }
1013         }
1014         return 0;
1015 exit:
1016         spin_unlock_irqrestore(&iwqp->lock, flags);
1017         return err;
1018 }
1019
1020 /**
1021  * cq_free_resources - free up recources for cq
1022  * @iwdev: iwarp device
1023  * @iwcq: cq ptr
1024  */
1025 static void cq_free_resources(struct i40iw_device *iwdev, struct i40iw_cq *iwcq)
1026 {
1027         struct i40iw_sc_cq *cq = &iwcq->sc_cq;
1028
1029         if (!iwcq->user_mode)
1030                 i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwcq->kmem);
1031         i40iw_free_resource(iwdev, iwdev->allocated_cqs, cq->cq_uk.cq_id);
1032 }
1033
1034 /**
1035  * cq_wq_destroy - send cq destroy cqp
1036  * @iwdev: iwarp device
1037  * @cq: hardware control cq
1038  */
1039 static void cq_wq_destroy(struct i40iw_device *iwdev, struct i40iw_sc_cq *cq)
1040 {
1041         enum i40iw_status_code status;
1042         struct i40iw_cqp_request *cqp_request;
1043         struct cqp_commands_info *cqp_info;
1044
1045         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1046         if (!cqp_request)
1047                 return;
1048
1049         cqp_info = &cqp_request->info;
1050
1051         cqp_info->cqp_cmd = OP_CQ_DESTROY;
1052         cqp_info->post_sq = 1;
1053         cqp_info->in.u.cq_destroy.cq = cq;
1054         cqp_info->in.u.cq_destroy.scratch = (uintptr_t)cqp_request;
1055         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1056         if (status)
1057                 i40iw_pr_err("CQP-OP Destroy QP fail");
1058 }
1059
1060 /**
1061  * i40iw_destroy_cq - destroy cq
1062  * @ib_cq: cq pointer
1063  */
1064 static int i40iw_destroy_cq(struct ib_cq *ib_cq)
1065 {
1066         struct i40iw_cq *iwcq;
1067         struct i40iw_device *iwdev;
1068         struct i40iw_sc_cq *cq;
1069
1070         if (!ib_cq) {
1071                 i40iw_pr_err("ib_cq == NULL\n");
1072                 return 0;
1073         }
1074
1075         iwcq = to_iwcq(ib_cq);
1076         iwdev = to_iwdev(ib_cq->device);
1077         cq = &iwcq->sc_cq;
1078         cq_wq_destroy(iwdev, cq);
1079         cq_free_resources(iwdev, iwcq);
1080         kfree(iwcq);
1081         return 0;
1082 }
1083
1084 /**
1085  * i40iw_create_cq - create cq
1086  * @ibdev: device pointer from stack
1087  * @attr: attributes for cq
1088  * @context: user context created during alloc
1089  * @udata: user data
1090  */
1091 static struct ib_cq *i40iw_create_cq(struct ib_device *ibdev,
1092                                      const struct ib_cq_init_attr *attr,
1093                                      struct ib_ucontext *context,
1094                                      struct ib_udata *udata)
1095 {
1096         struct i40iw_device *iwdev = to_iwdev(ibdev);
1097         struct i40iw_cq *iwcq;
1098         struct i40iw_pbl *iwpbl;
1099         u32 cq_num = 0;
1100         struct i40iw_sc_cq *cq;
1101         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1102         struct i40iw_cq_init_info info;
1103         enum i40iw_status_code status;
1104         struct i40iw_cqp_request *cqp_request;
1105         struct cqp_commands_info *cqp_info;
1106         struct i40iw_cq_uk_init_info *ukinfo = &info.cq_uk_init_info;
1107         unsigned long flags;
1108         int err_code;
1109         int entries = attr->cqe;
1110
1111         if (entries > iwdev->max_cqe)
1112                 return ERR_PTR(-EINVAL);
1113
1114         iwcq = kzalloc(sizeof(*iwcq), GFP_KERNEL);
1115         if (!iwcq)
1116                 return ERR_PTR(-ENOMEM);
1117
1118         memset(&info, 0, sizeof(info));
1119
1120         err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_cqs,
1121                                         iwdev->max_cq, &cq_num,
1122                                         &iwdev->next_cq);
1123         if (err_code)
1124                 goto error;
1125
1126         cq = &iwcq->sc_cq;
1127         cq->back_cq = (void *)iwcq;
1128         spin_lock_init(&iwcq->lock);
1129
1130         info.dev = dev;
1131         ukinfo->cq_size = max(entries, 4);
1132         ukinfo->cq_id = cq_num;
1133         iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size;
1134         info.ceqe_mask = 0;
1135         info.ceq_id = 0;
1136         info.ceq_id_valid = true;
1137         info.ceqe_mask = 1;
1138         info.type = I40IW_CQ_TYPE_IWARP;
1139         if (context) {
1140                 struct i40iw_ucontext *ucontext;
1141                 struct i40iw_create_cq_req req;
1142                 struct i40iw_cq_mr *cqmr;
1143
1144                 memset(&req, 0, sizeof(req));
1145                 iwcq->user_mode = true;
1146                 ucontext = to_ucontext(context);
1147                 if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req)))
1148                         goto cq_free_resources;
1149
1150                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1151                 iwpbl = i40iw_get_pbl((unsigned long)req.user_cq_buffer,
1152                                       &ucontext->cq_reg_mem_list);
1153                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1154                 if (!iwpbl) {
1155                         err_code = -EPROTO;
1156                         goto cq_free_resources;
1157                 }
1158
1159                 iwcq->iwpbl = iwpbl;
1160                 iwcq->cq_mem_size = 0;
1161                 cqmr = &iwpbl->cq_mr;
1162                 info.shadow_area_pa = cpu_to_le64(cqmr->shadow);
1163                 if (iwpbl->pbl_allocated) {
1164                         info.virtual_map = true;
1165                         info.pbl_chunk_size = 1;
1166                         info.first_pm_pbl_idx = cqmr->cq_pbl.idx;
1167                 } else {
1168                         info.cq_base_pa = cqmr->cq_pbl.addr;
1169                 }
1170         } else {
1171                 /* Kmode allocations */
1172                 int rsize;
1173                 int shadow;
1174
1175                 rsize = info.cq_uk_init_info.cq_size * sizeof(struct i40iw_cqe);
1176                 rsize = round_up(rsize, 256);
1177                 shadow = I40IW_SHADOW_AREA_SIZE << 3;
1178                 status = i40iw_allocate_dma_mem(dev->hw, &iwcq->kmem,
1179                                                 rsize + shadow, 256);
1180                 if (status) {
1181                         err_code = -ENOMEM;
1182                         goto cq_free_resources;
1183                 }
1184                 ukinfo->cq_base = iwcq->kmem.va;
1185                 info.cq_base_pa = iwcq->kmem.pa;
1186                 info.shadow_area_pa = info.cq_base_pa + rsize;
1187                 ukinfo->shadow_area = iwcq->kmem.va + rsize;
1188         }
1189
1190         if (dev->iw_priv_cq_ops->cq_init(cq, &info)) {
1191                 i40iw_pr_err("init cq fail\n");
1192                 err_code = -EPROTO;
1193                 goto cq_free_resources;
1194         }
1195
1196         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1197         if (!cqp_request) {
1198                 err_code = -ENOMEM;
1199                 goto cq_free_resources;
1200         }
1201
1202         cqp_info = &cqp_request->info;
1203         cqp_info->cqp_cmd = OP_CQ_CREATE;
1204         cqp_info->post_sq = 1;
1205         cqp_info->in.u.cq_create.cq = cq;
1206         cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1207         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1208         if (status) {
1209                 i40iw_pr_err("CQP-OP Create QP fail");
1210                 err_code = -EPROTO;
1211                 goto cq_free_resources;
1212         }
1213
1214         if (context) {
1215                 struct i40iw_create_cq_resp resp;
1216
1217                 memset(&resp, 0, sizeof(resp));
1218                 resp.cq_id = info.cq_uk_init_info.cq_id;
1219                 resp.cq_size = info.cq_uk_init_info.cq_size;
1220                 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
1221                         i40iw_pr_err("copy to user data\n");
1222                         err_code = -EPROTO;
1223                         goto cq_destroy;
1224                 }
1225         }
1226
1227         return (struct ib_cq *)iwcq;
1228
1229 cq_destroy:
1230         cq_wq_destroy(iwdev, cq);
1231 cq_free_resources:
1232         cq_free_resources(iwdev, iwcq);
1233 error:
1234         kfree(iwcq);
1235         return ERR_PTR(err_code);
1236 }
1237
1238 /**
1239  * i40iw_get_user_access - get hw access from IB access
1240  * @acc: IB access to return hw access
1241  */
1242 static inline u16 i40iw_get_user_access(int acc)
1243 {
1244         u16 access = 0;
1245
1246         access |= (acc & IB_ACCESS_LOCAL_WRITE) ? I40IW_ACCESS_FLAGS_LOCALWRITE : 0;
1247         access |= (acc & IB_ACCESS_REMOTE_WRITE) ? I40IW_ACCESS_FLAGS_REMOTEWRITE : 0;
1248         access |= (acc & IB_ACCESS_REMOTE_READ) ? I40IW_ACCESS_FLAGS_REMOTEREAD : 0;
1249         access |= (acc & IB_ACCESS_MW_BIND) ? I40IW_ACCESS_FLAGS_BIND_WINDOW : 0;
1250         return access;
1251 }
1252
1253 /**
1254  * i40iw_free_stag - free stag resource
1255  * @iwdev: iwarp device
1256  * @stag: stag to free
1257  */
1258 static void i40iw_free_stag(struct i40iw_device *iwdev, u32 stag)
1259 {
1260         u32 stag_idx;
1261
1262         stag_idx = (stag & iwdev->mr_stagmask) >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1263         i40iw_free_resource(iwdev, iwdev->allocated_mrs, stag_idx);
1264 }
1265
1266 /**
1267  * i40iw_create_stag - create random stag
1268  * @iwdev: iwarp device
1269  */
1270 static u32 i40iw_create_stag(struct i40iw_device *iwdev)
1271 {
1272         u32 stag = 0;
1273         u32 stag_index = 0;
1274         u32 next_stag_index;
1275         u32 driver_key;
1276         u32 random;
1277         u8 consumer_key;
1278         int ret;
1279
1280         get_random_bytes(&random, sizeof(random));
1281         consumer_key = (u8)random;
1282
1283         driver_key = random & ~iwdev->mr_stagmask;
1284         next_stag_index = (random & iwdev->mr_stagmask) >> 8;
1285         next_stag_index %= iwdev->max_mr;
1286
1287         ret = i40iw_alloc_resource(iwdev,
1288                                    iwdev->allocated_mrs, iwdev->max_mr,
1289                                    &stag_index, &next_stag_index);
1290         if (!ret) {
1291                 stag = stag_index << I40IW_CQPSQ_STAG_IDX_SHIFT;
1292                 stag |= driver_key;
1293                 stag += (u32)consumer_key;
1294         }
1295         return stag;
1296 }
1297
1298 /**
1299  * i40iw_next_pbl_addr - Get next pbl address
1300  * @palloc: Poiner to allocated pbles
1301  * @pbl: pointer to a pble
1302  * @pinfo: info pointer
1303  * @idx: index
1304  */
1305 static inline u64 *i40iw_next_pbl_addr(struct i40iw_pble_alloc *palloc,
1306                                        u64 *pbl,
1307                                        struct i40iw_pble_info **pinfo,
1308                                        u32 *idx)
1309 {
1310         *idx += 1;
1311         if ((!(*pinfo)) || (*idx != (*pinfo)->cnt))
1312                 return ++pbl;
1313         *idx = 0;
1314         (*pinfo)++;
1315         return (u64 *)(*pinfo)->addr;
1316 }
1317
1318 /**
1319  * i40iw_copy_user_pgaddrs - copy user page address to pble's os locally
1320  * @iwmr: iwmr for IB's user page addresses
1321  * @pbl: ple pointer to save 1 level or 0 level pble
1322  * @level: indicated level 0, 1 or 2
1323  */
1324 static void i40iw_copy_user_pgaddrs(struct i40iw_mr *iwmr,
1325                                     u64 *pbl,
1326                                     enum i40iw_pble_level level)
1327 {
1328         struct ib_umem *region = iwmr->region;
1329         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1330         int chunk_pages, entry, pg_shift, i;
1331         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1332         struct i40iw_pble_info *pinfo;
1333         struct scatterlist *sg;
1334         u32 idx = 0;
1335
1336         pinfo = (level == I40IW_LEVEL_1) ? NULL : palloc->level2.leaf;
1337         pg_shift = ffs(region->page_size) - 1;
1338         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
1339                 chunk_pages = sg_dma_len(sg) >> pg_shift;
1340                 if ((iwmr->type == IW_MEMREG_TYPE_QP) &&
1341                     !iwpbl->qp_mr.sq_page)
1342                         iwpbl->qp_mr.sq_page = sg_page(sg);
1343                 for (i = 0; i < chunk_pages; i++) {
1344                         *pbl = cpu_to_le64(sg_dma_address(sg) + region->page_size * i);
1345                         pbl = i40iw_next_pbl_addr(palloc, pbl, &pinfo, &idx);
1346                 }
1347         }
1348 }
1349
1350 /**
1351  * i40iw_setup_pbles - copy user pg address to pble's
1352  * @iwdev: iwarp device
1353  * @iwmr: mr pointer for this memory registration
1354  * @use_pbles: flag if to use pble's or memory (level 0)
1355  */
1356 static int i40iw_setup_pbles(struct i40iw_device *iwdev,
1357                              struct i40iw_mr *iwmr,
1358                              bool use_pbles)
1359 {
1360         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1361         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1362         struct i40iw_pble_info *pinfo;
1363         u64 *pbl;
1364         enum i40iw_status_code status;
1365         enum i40iw_pble_level level = I40IW_LEVEL_1;
1366
1367         if (!use_pbles && (iwmr->page_cnt > MAX_SAVE_PAGE_ADDRS))
1368                 return -ENOMEM;
1369
1370         if (use_pbles) {
1371                 mutex_lock(&iwdev->pbl_mutex);
1372                 status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt);
1373                 mutex_unlock(&iwdev->pbl_mutex);
1374                 if (status)
1375                         return -ENOMEM;
1376
1377                 iwpbl->pbl_allocated = true;
1378                 level = palloc->level;
1379                 pinfo = (level == I40IW_LEVEL_1) ? &palloc->level1 : palloc->level2.leaf;
1380                 pbl = (u64 *)pinfo->addr;
1381         } else {
1382                 pbl = iwmr->pgaddrmem;
1383         }
1384
1385         i40iw_copy_user_pgaddrs(iwmr, pbl, level);
1386         return 0;
1387 }
1388
1389 /**
1390  * i40iw_handle_q_mem - handle memory for qp and cq
1391  * @iwdev: iwarp device
1392  * @req: information for q memory management
1393  * @iwpbl: pble struct
1394  * @use_pbles: flag to use pble
1395  */
1396 static int i40iw_handle_q_mem(struct i40iw_device *iwdev,
1397                               struct i40iw_mem_reg_req *req,
1398                               struct i40iw_pbl *iwpbl,
1399                               bool use_pbles)
1400 {
1401         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1402         struct i40iw_mr *iwmr = iwpbl->iwmr;
1403         struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
1404         struct i40iw_cq_mr *cqmr = &iwpbl->cq_mr;
1405         struct i40iw_hmc_pble *hmc_p;
1406         u64 *arr = iwmr->pgaddrmem;
1407         int err;
1408         int total;
1409
1410         total = req->sq_pages + req->rq_pages + req->cq_pages;
1411
1412         err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
1413         if (err)
1414                 return err;
1415         if (use_pbles && (palloc->level != I40IW_LEVEL_1)) {
1416                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1417                 iwpbl->pbl_allocated = false;
1418                 return -ENOMEM;
1419         }
1420
1421         if (use_pbles)
1422                 arr = (u64 *)palloc->level1.addr;
1423         if (req->reg_type == IW_MEMREG_TYPE_QP) {
1424                 hmc_p = &qpmr->sq_pbl;
1425                 qpmr->shadow = (dma_addr_t)arr[total];
1426                 if (use_pbles) {
1427                         hmc_p->idx = palloc->level1.idx;
1428                         hmc_p = &qpmr->rq_pbl;
1429                         hmc_p->idx = palloc->level1.idx + req->sq_pages;
1430                 } else {
1431                         hmc_p->addr = arr[0];
1432                         hmc_p = &qpmr->rq_pbl;
1433                         hmc_p->addr = arr[1];
1434                 }
1435         } else {                /* CQ */
1436                 hmc_p = &cqmr->cq_pbl;
1437                 cqmr->shadow = (dma_addr_t)arr[total];
1438                 if (use_pbles)
1439                         hmc_p->idx = palloc->level1.idx;
1440                 else
1441                         hmc_p->addr = arr[0];
1442         }
1443         return err;
1444 }
1445
1446 /**
1447  * i40iw_hwreg_mr - send cqp command for memory registration
1448  * @iwdev: iwarp device
1449  * @iwmr: iwarp mr pointer
1450  * @access: access for MR
1451  */
1452 static int i40iw_hwreg_mr(struct i40iw_device *iwdev,
1453                           struct i40iw_mr *iwmr,
1454                           u16 access)
1455 {
1456         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1457         struct i40iw_reg_ns_stag_info *stag_info;
1458         struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
1459         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1460         enum i40iw_status_code status;
1461         int err = 0;
1462         struct i40iw_cqp_request *cqp_request;
1463         struct cqp_commands_info *cqp_info;
1464
1465         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1466         if (!cqp_request)
1467                 return -ENOMEM;
1468
1469         cqp_info = &cqp_request->info;
1470         stag_info = &cqp_info->in.u.mr_reg_non_shared.info;
1471         memset(stag_info, 0, sizeof(*stag_info));
1472         stag_info->va = (void *)(unsigned long)iwpbl->user_base;
1473         stag_info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1474         stag_info->stag_key = (u8)iwmr->stag;
1475         stag_info->total_len = iwmr->length;
1476         stag_info->access_rights = access;
1477         stag_info->pd_id = iwpd->sc_pd.pd_id;
1478         stag_info->addr_type = I40IW_ADDR_TYPE_VA_BASED;
1479
1480         if (iwmr->page_cnt > 1) {
1481                 if (palloc->level == I40IW_LEVEL_1) {
1482                         stag_info->first_pm_pbl_index = palloc->level1.idx;
1483                         stag_info->chunk_size = 1;
1484                 } else {
1485                         stag_info->first_pm_pbl_index = palloc->level2.root.idx;
1486                         stag_info->chunk_size = 3;
1487                 }
1488         } else {
1489                 stag_info->reg_addr_pa = iwmr->pgaddrmem[0];
1490         }
1491
1492         cqp_info->cqp_cmd = OP_MR_REG_NON_SHARED;
1493         cqp_info->post_sq = 1;
1494         cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->sc_dev;
1495         cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request;
1496
1497         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1498         if (status) {
1499                 err = -ENOMEM;
1500                 i40iw_pr_err("CQP-OP MR Reg fail");
1501         }
1502         return err;
1503 }
1504
1505 /**
1506  * i40iw_reg_user_mr - Register a user memory region
1507  * @pd: ptr of pd
1508  * @start: virtual start address
1509  * @length: length of mr
1510  * @virt: virtual address
1511  * @acc: access of mr
1512  * @udata: user data
1513  */
1514 static struct ib_mr *i40iw_reg_user_mr(struct ib_pd *pd,
1515                                        u64 start,
1516                                        u64 length,
1517                                        u64 virt,
1518                                        int acc,
1519                                        struct ib_udata *udata)
1520 {
1521         struct i40iw_pd *iwpd = to_iwpd(pd);
1522         struct i40iw_device *iwdev = to_iwdev(pd->device);
1523         struct i40iw_ucontext *ucontext;
1524         struct i40iw_pble_alloc *palloc;
1525         struct i40iw_pbl *iwpbl;
1526         struct i40iw_mr *iwmr;
1527         struct ib_umem *region;
1528         struct i40iw_mem_reg_req req;
1529         u32 pbl_depth = 0;
1530         u32 stag = 0;
1531         u16 access;
1532         u32 region_length;
1533         bool use_pbles = false;
1534         unsigned long flags;
1535         int err = -ENOSYS;
1536
1537         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
1538         if (IS_ERR(region))
1539                 return (struct ib_mr *)region;
1540
1541         if (ib_copy_from_udata(&req, udata, sizeof(req))) {
1542                 ib_umem_release(region);
1543                 return ERR_PTR(-EFAULT);
1544         }
1545
1546         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1547         if (!iwmr) {
1548                 ib_umem_release(region);
1549                 return ERR_PTR(-ENOMEM);
1550         }
1551
1552         iwpbl = &iwmr->iwpbl;
1553         iwpbl->iwmr = iwmr;
1554         iwmr->region = region;
1555         iwmr->ibmr.pd = pd;
1556         iwmr->ibmr.device = pd->device;
1557         ucontext = to_ucontext(pd->uobject->context);
1558         region_length = region->length + (start & 0xfff);
1559         pbl_depth = region_length >> 12;
1560         pbl_depth += (region_length & (4096 - 1)) ? 1 : 0;
1561         iwmr->length = region->length;
1562
1563         iwpbl->user_base = virt;
1564         palloc = &iwpbl->pble_alloc;
1565
1566         iwmr->type = req.reg_type;
1567         iwmr->page_cnt = pbl_depth;
1568
1569         switch (req.reg_type) {
1570         case IW_MEMREG_TYPE_QP:
1571                 use_pbles = ((req.sq_pages + req.rq_pages) > 2);
1572                 err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
1573                 if (err)
1574                         goto error;
1575                 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
1576                 list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list);
1577                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
1578                 break;
1579         case IW_MEMREG_TYPE_CQ:
1580                 use_pbles = (req.cq_pages > 1);
1581                 err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
1582                 if (err)
1583                         goto error;
1584
1585                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1586                 list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list);
1587                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1588                 break;
1589         case IW_MEMREG_TYPE_MEM:
1590                 access = I40IW_ACCESS_FLAGS_LOCALREAD;
1591
1592                 use_pbles = (iwmr->page_cnt != 1);
1593                 err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
1594                 if (err)
1595                         goto error;
1596
1597                 access |= i40iw_get_user_access(acc);
1598                 stag = i40iw_create_stag(iwdev);
1599                 if (!stag) {
1600                         err = -ENOMEM;
1601                         goto error;
1602                 }
1603
1604                 iwmr->stag = stag;
1605                 iwmr->ibmr.rkey = stag;
1606                 iwmr->ibmr.lkey = stag;
1607
1608                 err = i40iw_hwreg_mr(iwdev, iwmr, access);
1609                 if (err) {
1610                         i40iw_free_stag(iwdev, stag);
1611                         goto error;
1612                 }
1613                 break;
1614         default:
1615                 goto error;
1616         }
1617
1618         iwmr->type = req.reg_type;
1619         if (req.reg_type == IW_MEMREG_TYPE_MEM)
1620                 i40iw_add_pdusecount(iwpd);
1621         return &iwmr->ibmr;
1622
1623 error:
1624         if (palloc->level != I40IW_LEVEL_0)
1625                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1626         ib_umem_release(region);
1627         kfree(iwmr);
1628         return ERR_PTR(err);
1629 }
1630
1631 /**
1632  * i40iw_reg_phys_mr - register kernel physical memory
1633  * @pd: ibpd pointer
1634  * @addr: physical address of memory to register
1635  * @size: size of memory to register
1636  * @acc: Access rights
1637  * @iova_start: start of virtual address for physical buffers
1638  */
1639 struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *pd,
1640                                 u64 addr,
1641                                 u64 size,
1642                                 int acc,
1643                                 u64 *iova_start)
1644 {
1645         struct i40iw_pd *iwpd = to_iwpd(pd);
1646         struct i40iw_device *iwdev = to_iwdev(pd->device);
1647         struct i40iw_pbl *iwpbl;
1648         struct i40iw_mr *iwmr;
1649         enum i40iw_status_code status;
1650         u32 stag;
1651         u16 access = I40IW_ACCESS_FLAGS_LOCALREAD;
1652         int ret;
1653
1654         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1655         if (!iwmr)
1656                 return ERR_PTR(-ENOMEM);
1657         iwmr->ibmr.pd = pd;
1658         iwmr->ibmr.device = pd->device;
1659         iwpbl = &iwmr->iwpbl;
1660         iwpbl->iwmr = iwmr;
1661         iwmr->type = IW_MEMREG_TYPE_MEM;
1662         iwpbl->user_base = *iova_start;
1663         stag = i40iw_create_stag(iwdev);
1664         if (!stag) {
1665                 ret = -EOVERFLOW;
1666                 goto err;
1667         }
1668         access |= i40iw_get_user_access(acc);
1669         iwmr->stag = stag;
1670         iwmr->ibmr.rkey = stag;
1671         iwmr->ibmr.lkey = stag;
1672         iwmr->page_cnt = 1;
1673         iwmr->pgaddrmem[0]  = addr;
1674         status = i40iw_hwreg_mr(iwdev, iwmr, access);
1675         if (status) {
1676                 i40iw_free_stag(iwdev, stag);
1677                 ret = -ENOMEM;
1678                 goto err;
1679         }
1680
1681         i40iw_add_pdusecount(iwpd);
1682         return &iwmr->ibmr;
1683  err:
1684         kfree(iwmr);
1685         return ERR_PTR(ret);
1686 }
1687
1688 /**
1689  * i40iw_get_dma_mr - register physical mem
1690  * @pd: ptr of pd
1691  * @acc: access for memory
1692  */
1693 static struct ib_mr *i40iw_get_dma_mr(struct ib_pd *pd, int acc)
1694 {
1695         u64 kva = 0;
1696
1697         return i40iw_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
1698 }
1699
1700 /**
1701  * i40iw_del_mem_list - Deleting pbl list entries for CQ/QP
1702  * @iwmr: iwmr for IB's user page addresses
1703  * @ucontext: ptr to user context
1704  */
1705 static void i40iw_del_memlist(struct i40iw_mr *iwmr,
1706                               struct i40iw_ucontext *ucontext)
1707 {
1708         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1709         unsigned long flags;
1710
1711         switch (iwmr->type) {
1712         case IW_MEMREG_TYPE_CQ:
1713                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1714                 if (!list_empty(&ucontext->cq_reg_mem_list))
1715                         list_del(&iwpbl->list);
1716                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1717                 break;
1718         case IW_MEMREG_TYPE_QP:
1719                 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
1720                 if (!list_empty(&ucontext->qp_reg_mem_list))
1721                         list_del(&iwpbl->list);
1722                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
1723                 break;
1724         default:
1725                 break;
1726         }
1727 }
1728
1729 /**
1730  * i40iw_dereg_mr - deregister mr
1731  * @ib_mr: mr ptr for dereg
1732  */
1733 static int i40iw_dereg_mr(struct ib_mr *ib_mr)
1734 {
1735         struct ib_pd *ibpd = ib_mr->pd;
1736         struct i40iw_pd *iwpd = to_iwpd(ibpd);
1737         struct i40iw_mr *iwmr = to_iwmr(ib_mr);
1738         struct i40iw_device *iwdev = to_iwdev(ib_mr->device);
1739         enum i40iw_status_code status;
1740         struct i40iw_dealloc_stag_info *info;
1741         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1742         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1743         struct i40iw_cqp_request *cqp_request;
1744         struct cqp_commands_info *cqp_info;
1745         u32 stag_idx;
1746
1747         if (iwmr->region)
1748                 ib_umem_release(iwmr->region);
1749
1750         if (iwmr->type != IW_MEMREG_TYPE_MEM) {
1751                 if (ibpd->uobject) {
1752                         struct i40iw_ucontext *ucontext;
1753
1754                         ucontext = to_ucontext(ibpd->uobject->context);
1755                         i40iw_del_memlist(iwmr, ucontext);
1756                 }
1757                 if (iwpbl->pbl_allocated)
1758                         i40iw_free_pble(iwdev->pble_rsrc, palloc);
1759                 kfree(iwpbl->iwmr);
1760                 iwpbl->iwmr = NULL;
1761                 return 0;
1762         }
1763
1764         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1765         if (!cqp_request)
1766                 return -ENOMEM;
1767
1768         cqp_info = &cqp_request->info;
1769         info = &cqp_info->in.u.dealloc_stag.info;
1770         memset(info, 0, sizeof(*info));
1771
1772         info->pd_id = cpu_to_le32(iwpd->sc_pd.pd_id & 0x00007fff);
1773         info->stag_idx = RS_64_1(ib_mr->rkey, I40IW_CQPSQ_STAG_IDX_SHIFT);
1774         stag_idx = info->stag_idx;
1775         info->mr = true;
1776         if (iwpbl->pbl_allocated)
1777                 info->dealloc_pbl = true;
1778
1779         cqp_info->cqp_cmd = OP_DEALLOC_STAG;
1780         cqp_info->post_sq = 1;
1781         cqp_info->in.u.dealloc_stag.dev = &iwdev->sc_dev;
1782         cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
1783         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1784         if (status)
1785                 i40iw_pr_err("CQP-OP dealloc failed for stag_idx = 0x%x\n", stag_idx);
1786         i40iw_rem_pdusecount(iwpd, iwdev);
1787         i40iw_free_stag(iwdev, iwmr->stag);
1788         if (iwpbl->pbl_allocated)
1789                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1790         kfree(iwmr);
1791         return 0;
1792 }
1793
1794 /**
1795  * i40iw_show_rev
1796  */
1797 static ssize_t i40iw_show_rev(struct device *dev,
1798                               struct device_attribute *attr, char *buf)
1799 {
1800         struct i40iw_ib_device *iwibdev = container_of(dev,
1801                                                        struct i40iw_ib_device,
1802                                                        ibdev.dev);
1803         u32 hw_rev = iwibdev->iwdev->sc_dev.hw_rev;
1804
1805         return sprintf(buf, "%x\n", hw_rev);
1806 }
1807
1808 /**
1809  * i40iw_show_fw_ver
1810  */
1811 static ssize_t i40iw_show_fw_ver(struct device *dev,
1812                                  struct device_attribute *attr, char *buf)
1813 {
1814         u32 firmware_version = I40IW_FW_VERSION;
1815
1816         return sprintf(buf, "%u.%u\n", firmware_version,
1817                        (firmware_version & 0x000000ff));
1818 }
1819
1820 /**
1821  * i40iw_show_hca
1822  */
1823 static ssize_t i40iw_show_hca(struct device *dev,
1824                               struct device_attribute *attr, char *buf)
1825 {
1826         return sprintf(buf, "I40IW\n");
1827 }
1828
1829 /**
1830  * i40iw_show_board
1831  */
1832 static ssize_t i40iw_show_board(struct device *dev,
1833                                 struct device_attribute *attr,
1834                                 char *buf)
1835 {
1836         return sprintf(buf, "%.*s\n", 32, "I40IW Board ID");
1837 }
1838
1839 static DEVICE_ATTR(hw_rev, S_IRUGO, i40iw_show_rev, NULL);
1840 static DEVICE_ATTR(fw_ver, S_IRUGO, i40iw_show_fw_ver, NULL);
1841 static DEVICE_ATTR(hca_type, S_IRUGO, i40iw_show_hca, NULL);
1842 static DEVICE_ATTR(board_id, S_IRUGO, i40iw_show_board, NULL);
1843
1844 static struct device_attribute *i40iw_dev_attributes[] = {
1845         &dev_attr_hw_rev,
1846         &dev_attr_fw_ver,
1847         &dev_attr_hca_type,
1848         &dev_attr_board_id
1849 };
1850
1851 /**
1852  * i40iw_copy_sg_list - copy sg list for qp
1853  * @sg_list: copied into sg_list
1854  * @sgl: copy from sgl
1855  * @num_sges: count of sg entries
1856  */
1857 static void i40iw_copy_sg_list(struct i40iw_sge *sg_list, struct ib_sge *sgl, int num_sges)
1858 {
1859         unsigned int i;
1860
1861         for (i = 0; (i < num_sges) && (i < I40IW_MAX_WQ_FRAGMENT_COUNT); i++) {
1862                 sg_list[i].tag_off = sgl[i].addr;
1863                 sg_list[i].len = sgl[i].length;
1864                 sg_list[i].stag = sgl[i].lkey;
1865         }
1866 }
1867
1868 /**
1869  * i40iw_post_send -  kernel application wr
1870  * @ibqp: qp ptr for wr
1871  * @ib_wr: work request ptr
1872  * @bad_wr: return of bad wr if err
1873  */
1874 static int i40iw_post_send(struct ib_qp *ibqp,
1875                            struct ib_send_wr *ib_wr,
1876                            struct ib_send_wr **bad_wr)
1877 {
1878         struct i40iw_qp *iwqp;
1879         struct i40iw_qp_uk *ukqp;
1880         struct i40iw_post_sq_info info;
1881         enum i40iw_status_code ret;
1882         int err = 0;
1883         unsigned long flags;
1884
1885         iwqp = (struct i40iw_qp *)ibqp;
1886         ukqp = &iwqp->sc_qp.qp_uk;
1887
1888         spin_lock_irqsave(&iwqp->lock, flags);
1889         while (ib_wr) {
1890                 memset(&info, 0, sizeof(info));
1891                 info.wr_id = (u64)(ib_wr->wr_id);
1892                 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all)
1893                         info.signaled = true;
1894                 if (ib_wr->send_flags & IB_SEND_FENCE)
1895                         info.read_fence = true;
1896
1897                 switch (ib_wr->opcode) {
1898                 case IB_WR_SEND:
1899                         if (ib_wr->send_flags & IB_SEND_SOLICITED)
1900                                 info.op_type = I40IW_OP_TYPE_SEND_SOL;
1901                         else
1902                                 info.op_type = I40IW_OP_TYPE_SEND;
1903
1904                         if (ib_wr->send_flags & IB_SEND_INLINE) {
1905                                 info.op.inline_send.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
1906                                 info.op.inline_send.len = ib_wr->sg_list[0].length;
1907                                 ret = ukqp->ops.iw_inline_send(ukqp, &info, rdma_wr(ib_wr)->rkey, false);
1908                         } else {
1909                                 info.op.send.num_sges = ib_wr->num_sge;
1910                                 info.op.send.sg_list = (struct i40iw_sge *)ib_wr->sg_list;
1911                                 ret = ukqp->ops.iw_send(ukqp, &info, rdma_wr(ib_wr)->rkey, false);
1912                         }
1913
1914                         if (ret)
1915                                 err = -EIO;
1916                         break;
1917                 case IB_WR_RDMA_WRITE:
1918                         info.op_type = I40IW_OP_TYPE_RDMA_WRITE;
1919
1920                         if (ib_wr->send_flags & IB_SEND_INLINE) {
1921                                 info.op.inline_rdma_write.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
1922                                 info.op.inline_rdma_write.len = ib_wr->sg_list[0].length;
1923                                 info.op.inline_rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
1924                                 info.op.inline_rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
1925                                 info.op.inline_rdma_write.rem_addr.len = ib_wr->sg_list->length;
1926                                 ret = ukqp->ops.iw_inline_rdma_write(ukqp, &info, false);
1927                         } else {
1928                                 info.op.rdma_write.lo_sg_list = (void *)ib_wr->sg_list;
1929                                 info.op.rdma_write.num_lo_sges = ib_wr->num_sge;
1930                                 info.op.rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
1931                                 info.op.rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
1932                                 info.op.rdma_write.rem_addr.len = ib_wr->sg_list->length;
1933                                 ret = ukqp->ops.iw_rdma_write(ukqp, &info, false);
1934                         }
1935
1936                         if (ret)
1937                                 err = -EIO;
1938                         break;
1939                 case IB_WR_RDMA_READ:
1940                         info.op_type = I40IW_OP_TYPE_RDMA_READ;
1941                         info.op.rdma_read.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
1942                         info.op.rdma_read.rem_addr.stag = rdma_wr(ib_wr)->rkey;
1943                         info.op.rdma_read.rem_addr.len = ib_wr->sg_list->length;
1944                         info.op.rdma_read.lo_addr.tag_off = ib_wr->sg_list->addr;
1945                         info.op.rdma_read.lo_addr.stag = ib_wr->sg_list->lkey;
1946                         info.op.rdma_read.lo_addr.len = ib_wr->sg_list->length;
1947                         ret = ukqp->ops.iw_rdma_read(ukqp, &info, false, false);
1948                         if (ret)
1949                                 err = -EIO;
1950                         break;
1951                 default:
1952                         err = -EINVAL;
1953                         i40iw_pr_err(" upost_send bad opcode = 0x%x\n",
1954                                      ib_wr->opcode);
1955                         break;
1956                 }
1957
1958                 if (err)
1959                         break;
1960                 ib_wr = ib_wr->next;
1961         }
1962
1963         if (err)
1964                 *bad_wr = ib_wr;
1965         else
1966                 ukqp->ops.iw_qp_post_wr(ukqp);
1967         spin_unlock_irqrestore(&iwqp->lock, flags);
1968
1969         return err;
1970 }
1971
1972 /**
1973  * i40iw_post_recv - post receive wr for kernel application
1974  * @ibqp: ib qp pointer
1975  * @ib_wr: work request for receive
1976  * @bad_wr: bad wr caused an error
1977  */
1978 static int i40iw_post_recv(struct ib_qp *ibqp,
1979                            struct ib_recv_wr *ib_wr,
1980                            struct ib_recv_wr **bad_wr)
1981 {
1982         struct i40iw_qp *iwqp;
1983         struct i40iw_qp_uk *ukqp;
1984         struct i40iw_post_rq_info post_recv;
1985         struct i40iw_sge sg_list[I40IW_MAX_WQ_FRAGMENT_COUNT];
1986         enum i40iw_status_code ret = 0;
1987         unsigned long flags;
1988
1989         iwqp = (struct i40iw_qp *)ibqp;
1990         ukqp = &iwqp->sc_qp.qp_uk;
1991
1992         memset(&post_recv, 0, sizeof(post_recv));
1993         spin_lock_irqsave(&iwqp->lock, flags);
1994         while (ib_wr) {
1995                 post_recv.num_sges = ib_wr->num_sge;
1996                 post_recv.wr_id = ib_wr->wr_id;
1997                 i40iw_copy_sg_list(sg_list, ib_wr->sg_list, ib_wr->num_sge);
1998                 post_recv.sg_list = sg_list;
1999                 ret = ukqp->ops.iw_post_receive(ukqp, &post_recv);
2000                 if (ret) {
2001                         i40iw_pr_err(" post_recv err %d\n", ret);
2002                         *bad_wr = ib_wr;
2003                         goto out;
2004                 }
2005                 ib_wr = ib_wr->next;
2006         }
2007  out:
2008         spin_unlock_irqrestore(&iwqp->lock, flags);
2009         if (ret)
2010                 return -ENOSYS;
2011         return 0;
2012 }
2013
2014 /**
2015  * i40iw_poll_cq - poll cq for completion (kernel apps)
2016  * @ibcq: cq to poll
2017  * @num_entries: number of entries to poll
2018  * @entry: wr of entry completed
2019  */
2020 static int i40iw_poll_cq(struct ib_cq *ibcq,
2021                          int num_entries,
2022                          struct ib_wc *entry)
2023 {
2024         struct i40iw_cq *iwcq;
2025         int cqe_count = 0;
2026         struct i40iw_cq_poll_info cq_poll_info;
2027         enum i40iw_status_code ret;
2028         struct i40iw_cq_uk *ukcq;
2029         struct i40iw_sc_qp *qp;
2030         unsigned long flags;
2031
2032         iwcq = (struct i40iw_cq *)ibcq;
2033         ukcq = &iwcq->sc_cq.cq_uk;
2034
2035         spin_lock_irqsave(&iwcq->lock, flags);
2036         while (cqe_count < num_entries) {
2037                 ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info, true);
2038                 if (ret == I40IW_ERR_QUEUE_EMPTY) {
2039                         break;
2040                 } else if (ret) {
2041                         if (!cqe_count)
2042                                 cqe_count = -1;
2043                         break;
2044                 }
2045                 entry->wc_flags = 0;
2046                 entry->wr_id = cq_poll_info.wr_id;
2047                 if (!cq_poll_info.error)
2048                         entry->status = IB_WC_SUCCESS;
2049                 else
2050                         entry->status = IB_WC_WR_FLUSH_ERR;
2051
2052                 switch (cq_poll_info.op_type) {
2053                 case I40IW_OP_TYPE_RDMA_WRITE:
2054                         entry->opcode = IB_WC_RDMA_WRITE;
2055                         break;
2056                 case I40IW_OP_TYPE_RDMA_READ_INV_STAG:
2057                 case I40IW_OP_TYPE_RDMA_READ:
2058                         entry->opcode = IB_WC_RDMA_READ;
2059                         break;
2060                 case I40IW_OP_TYPE_SEND_SOL:
2061                 case I40IW_OP_TYPE_SEND_SOL_INV:
2062                 case I40IW_OP_TYPE_SEND_INV:
2063                 case I40IW_OP_TYPE_SEND:
2064                         entry->opcode = IB_WC_SEND;
2065                         break;
2066                 case I40IW_OP_TYPE_REC:
2067                         entry->opcode = IB_WC_RECV;
2068                         break;
2069                 default:
2070                         entry->opcode = IB_WC_RECV;
2071                         break;
2072                 }
2073
2074                 entry->vendor_err =
2075                     cq_poll_info.major_err << 16 | cq_poll_info.minor_err;
2076                 entry->ex.imm_data = 0;
2077                 qp = (struct i40iw_sc_qp *)cq_poll_info.qp_handle;
2078                 entry->qp = (struct ib_qp *)qp->back_qp;
2079                 entry->src_qp = cq_poll_info.qp_id;
2080                 entry->byte_len = cq_poll_info.bytes_xfered;
2081                 entry++;
2082                 cqe_count++;
2083         }
2084         spin_unlock_irqrestore(&iwcq->lock, flags);
2085         return cqe_count;
2086 }
2087
2088 /**
2089  * i40iw_req_notify_cq - arm cq kernel application
2090  * @ibcq: cq to arm
2091  * @notify_flags: notofication flags
2092  */
2093 static int i40iw_req_notify_cq(struct ib_cq *ibcq,
2094                                enum ib_cq_notify_flags notify_flags)
2095 {
2096         struct i40iw_cq *iwcq;
2097         struct i40iw_cq_uk *ukcq;
2098         enum i40iw_completion_notify cq_notify = IW_CQ_COMPL_SOLICITED;
2099
2100         iwcq = (struct i40iw_cq *)ibcq;
2101         ukcq = &iwcq->sc_cq.cq_uk;
2102         if (notify_flags == IB_CQ_NEXT_COMP)
2103                 cq_notify = IW_CQ_COMPL_EVENT;
2104         ukcq->ops.iw_cq_request_notification(ukcq, cq_notify);
2105         return 0;
2106 }
2107
2108 /**
2109  * i40iw_port_immutable - return port's immutable data
2110  * @ibdev: ib dev struct
2111  * @port_num: port number
2112  * @immutable: immutable data for the port return
2113  */
2114 static int i40iw_port_immutable(struct ib_device *ibdev, u8 port_num,
2115                                 struct ib_port_immutable *immutable)
2116 {
2117         struct ib_port_attr attr;
2118         int err;
2119
2120         err = i40iw_query_port(ibdev, port_num, &attr);
2121
2122         if (err)
2123                 return err;
2124
2125         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2126         immutable->gid_tbl_len = attr.gid_tbl_len;
2127         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
2128
2129         return 0;
2130 }
2131
2132 /**
2133  * i40iw_get_protocol_stats - Populates the rdma_stats structure
2134  * @ibdev: ib dev struct
2135  * @stats: iw protocol stats struct
2136  */
2137 static int i40iw_get_protocol_stats(struct ib_device *ibdev,
2138                                     union rdma_protocol_stats *stats)
2139 {
2140         struct i40iw_device *iwdev = to_iwdev(ibdev);
2141         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
2142         struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
2143         struct i40iw_dev_hw_stats *hw_stats = &devstat->hw_stats;
2144         struct timespec curr_time;
2145         static struct timespec last_rd_time = {0, 0};
2146         enum i40iw_status_code status = 0;
2147         unsigned long flags;
2148
2149         curr_time = current_kernel_time();
2150         memset(stats, 0, sizeof(*stats));
2151
2152         if (dev->is_pf) {
2153                 spin_lock_irqsave(&devstat->stats_lock, flags);
2154                 devstat->ops.iw_hw_stat_read_all(devstat,
2155                         &devstat->hw_stats);
2156                 spin_unlock_irqrestore(&devstat->stats_lock, flags);
2157         } else {
2158                 if (((u64)curr_time.tv_sec - (u64)last_rd_time.tv_sec) > 1)
2159                         status = i40iw_vchnl_vf_get_pe_stats(dev,
2160                                                              &devstat->hw_stats);
2161
2162                 if (status)
2163                         return -ENOSYS;
2164         }
2165
2166         stats->iw.ipInReceives = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXPKTS] +
2167                                  hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXPKTS];
2168         stats->iw.ipInTruncatedPkts = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4RXTRUNC] +
2169                                       hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6RXTRUNC];
2170         stats->iw.ipInDiscards = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4RXDISCARD] +
2171                                  hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6RXDISCARD];
2172         stats->iw.ipOutNoRoutes = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4TXNOROUTE] +
2173                                   hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6TXNOROUTE];
2174         stats->iw.ipReasmReqds = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXFRAGS] +
2175                                  hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXFRAGS];
2176         stats->iw.ipFragCreates = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4TXFRAGS] +
2177                                   hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6TXFRAGS];
2178         stats->iw.ipInMcastPkts = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXMCPKTS] +
2179                                   hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXMCPKTS];
2180         stats->iw.ipOutMcastPkts = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4TXMCPKTS] +
2181                                    hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6TXMCPKTS];
2182         stats->iw.tcpOutSegs = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_TCPTXSEG];
2183         stats->iw.tcpInSegs = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_TCPRXSEGS];
2184         stats->iw.tcpRetransSegs = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_TCPRTXSEG];
2185
2186         last_rd_time = curr_time;
2187         return 0;
2188 }
2189
2190 /**
2191  * i40iw_query_gid - Query port GID
2192  * @ibdev: device pointer from stack
2193  * @port: port number
2194  * @index: Entry index
2195  * @gid: Global ID
2196  */
2197 static int i40iw_query_gid(struct ib_device *ibdev,
2198                            u8 port,
2199                            int index,
2200                            union ib_gid *gid)
2201 {
2202         struct i40iw_device *iwdev = to_iwdev(ibdev);
2203
2204         memset(gid->raw, 0, sizeof(gid->raw));
2205         ether_addr_copy(gid->raw, iwdev->netdev->dev_addr);
2206         return 0;
2207 }
2208
2209 /**
2210  * i40iw_modify_port  Modify port properties
2211  * @ibdev: device pointer from stack
2212  * @port: port number
2213  * @port_modify_mask: mask for port modifications
2214  * @props: port properties
2215  */
2216 static int i40iw_modify_port(struct ib_device *ibdev,
2217                              u8 port,
2218                              int port_modify_mask,
2219                              struct ib_port_modify *props)
2220 {
2221         return 0;
2222 }
2223
2224 /**
2225  * i40iw_query_pkey - Query partition key
2226  * @ibdev: device pointer from stack
2227  * @port: port number
2228  * @index: index of pkey
2229  * @pkey: pointer to store the pkey
2230  */
2231 static int i40iw_query_pkey(struct ib_device *ibdev,
2232                             u8 port,
2233                             u16 index,
2234                             u16 *pkey)
2235 {
2236         *pkey = 0;
2237         return 0;
2238 }
2239
2240 /**
2241  * i40iw_create_ah - create address handle
2242  * @ibpd: ptr of pd
2243  * @ah_attr: address handle attributes
2244  */
2245 static struct ib_ah *i40iw_create_ah(struct ib_pd *ibpd,
2246                                      struct ib_ah_attr *attr)
2247 {
2248         return ERR_PTR(-ENOSYS);
2249 }
2250
2251 /**
2252  * i40iw_destroy_ah - Destroy address handle
2253  * @ah: pointer to address handle
2254  */
2255 static int i40iw_destroy_ah(struct ib_ah *ah)
2256 {
2257         return -ENOSYS;
2258 }
2259
2260 /**
2261  * i40iw_init_rdma_device - initialization of iwarp device
2262  * @iwdev: iwarp device
2263  */
2264 static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev)
2265 {
2266         struct i40iw_ib_device *iwibdev;
2267         struct net_device *netdev = iwdev->netdev;
2268         struct pci_dev *pcidev = (struct pci_dev *)iwdev->hw.dev_context;
2269
2270         iwibdev = (struct i40iw_ib_device *)ib_alloc_device(sizeof(*iwibdev));
2271         if (!iwibdev) {
2272                 i40iw_pr_err("iwdev == NULL\n");
2273                 return NULL;
2274         }
2275         strlcpy(iwibdev->ibdev.name, "i40iw%d", IB_DEVICE_NAME_MAX);
2276         iwibdev->ibdev.owner = THIS_MODULE;
2277         iwdev->iwibdev = iwibdev;
2278         iwibdev->iwdev = iwdev;
2279
2280         iwibdev->ibdev.node_type = RDMA_NODE_RNIC;
2281         ether_addr_copy((u8 *)&iwibdev->ibdev.node_guid, netdev->dev_addr);
2282
2283         iwibdev->ibdev.uverbs_cmd_mask =
2284             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
2285             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
2286             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
2287             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
2288             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
2289             (1ull << IB_USER_VERBS_CMD_REG_MR) |
2290             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
2291             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2292             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
2293             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
2294             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
2295             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
2296             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
2297             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
2298             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
2299             (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
2300             (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
2301             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
2302             (1ull << IB_USER_VERBS_CMD_POST_RECV) |
2303             (1ull << IB_USER_VERBS_CMD_POST_SEND);
2304         iwibdev->ibdev.phys_port_cnt = 1;
2305         iwibdev->ibdev.num_comp_vectors = 1;
2306         iwibdev->ibdev.dma_device = &pcidev->dev;
2307         iwibdev->ibdev.dev.parent = &pcidev->dev;
2308         iwibdev->ibdev.query_port = i40iw_query_port;
2309         iwibdev->ibdev.modify_port = i40iw_modify_port;
2310         iwibdev->ibdev.query_pkey = i40iw_query_pkey;
2311         iwibdev->ibdev.query_gid = i40iw_query_gid;
2312         iwibdev->ibdev.alloc_ucontext = i40iw_alloc_ucontext;
2313         iwibdev->ibdev.dealloc_ucontext = i40iw_dealloc_ucontext;
2314         iwibdev->ibdev.mmap = i40iw_mmap;
2315         iwibdev->ibdev.alloc_pd = i40iw_alloc_pd;
2316         iwibdev->ibdev.dealloc_pd = i40iw_dealloc_pd;
2317         iwibdev->ibdev.create_qp = i40iw_create_qp;
2318         iwibdev->ibdev.modify_qp = i40iw_modify_qp;
2319         iwibdev->ibdev.query_qp = i40iw_query_qp;
2320         iwibdev->ibdev.destroy_qp = i40iw_destroy_qp;
2321         iwibdev->ibdev.create_cq = i40iw_create_cq;
2322         iwibdev->ibdev.destroy_cq = i40iw_destroy_cq;
2323         iwibdev->ibdev.get_dma_mr = i40iw_get_dma_mr;
2324         iwibdev->ibdev.reg_user_mr = i40iw_reg_user_mr;
2325         iwibdev->ibdev.dereg_mr = i40iw_dereg_mr;
2326         iwibdev->ibdev.get_protocol_stats = i40iw_get_protocol_stats;
2327         iwibdev->ibdev.query_device = i40iw_query_device;
2328         iwibdev->ibdev.create_ah = i40iw_create_ah;
2329         iwibdev->ibdev.destroy_ah = i40iw_destroy_ah;
2330         iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL);
2331         if (!iwibdev->ibdev.iwcm) {
2332                 ib_dealloc_device(&iwibdev->ibdev);
2333                 i40iw_pr_err("iwcm == NULL\n");
2334                 return NULL;
2335         }
2336
2337         iwibdev->ibdev.iwcm->add_ref = i40iw_add_ref;
2338         iwibdev->ibdev.iwcm->rem_ref = i40iw_rem_ref;
2339         iwibdev->ibdev.iwcm->get_qp = i40iw_get_qp;
2340         iwibdev->ibdev.iwcm->connect = i40iw_connect;
2341         iwibdev->ibdev.iwcm->accept = i40iw_accept;
2342         iwibdev->ibdev.iwcm->reject = i40iw_reject;
2343         iwibdev->ibdev.iwcm->create_listen = i40iw_create_listen;
2344         iwibdev->ibdev.iwcm->destroy_listen = i40iw_destroy_listen;
2345         memcpy(iwibdev->ibdev.iwcm->ifname, netdev->name,
2346                sizeof(iwibdev->ibdev.iwcm->ifname));
2347         iwibdev->ibdev.get_port_immutable   = i40iw_port_immutable;
2348         iwibdev->ibdev.poll_cq = i40iw_poll_cq;
2349         iwibdev->ibdev.req_notify_cq = i40iw_req_notify_cq;
2350         iwibdev->ibdev.post_send = i40iw_post_send;
2351         iwibdev->ibdev.post_recv = i40iw_post_recv;
2352
2353         return iwibdev;
2354 }
2355
2356 /**
2357  * i40iw_port_ibevent - indicate port event
2358  * @iwdev: iwarp device
2359  */
2360 void i40iw_port_ibevent(struct i40iw_device *iwdev)
2361 {
2362         struct i40iw_ib_device *iwibdev = iwdev->iwibdev;
2363         struct ib_event event;
2364
2365         event.device = &iwibdev->ibdev;
2366         event.element.port_num = 1;
2367         event.event = iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2368         ib_dispatch_event(&event);
2369 }
2370
2371 /**
2372  * i40iw_unregister_rdma_device - unregister of iwarp from IB
2373  * @iwibdev: rdma device ptr
2374  */
2375 static void i40iw_unregister_rdma_device(struct i40iw_ib_device *iwibdev)
2376 {
2377         int i;
2378
2379         for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i)
2380                 device_remove_file(&iwibdev->ibdev.dev,
2381                                    i40iw_dev_attributes[i]);
2382         ib_unregister_device(&iwibdev->ibdev);
2383 }
2384
2385 /**
2386  * i40iw_destroy_rdma_device - destroy rdma device and free resources
2387  * @iwibdev: IB device ptr
2388  */
2389 void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev)
2390 {
2391         if (!iwibdev)
2392                 return;
2393
2394         i40iw_unregister_rdma_device(iwibdev);
2395         kfree(iwibdev->ibdev.iwcm);
2396         iwibdev->ibdev.iwcm = NULL;
2397         ib_dealloc_device(&iwibdev->ibdev);
2398 }
2399
2400 /**
2401  * i40iw_register_rdma_device - register iwarp device to IB
2402  * @iwdev: iwarp device
2403  */
2404 int i40iw_register_rdma_device(struct i40iw_device *iwdev)
2405 {
2406         int i, ret;
2407         struct i40iw_ib_device *iwibdev;
2408
2409         iwdev->iwibdev = i40iw_init_rdma_device(iwdev);
2410         if (!iwdev->iwibdev)
2411                 return -ENOSYS;
2412         iwibdev = iwdev->iwibdev;
2413
2414         ret = ib_register_device(&iwibdev->ibdev, NULL);
2415         if (ret)
2416                 goto error;
2417
2418         for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i) {
2419                 ret =
2420                     device_create_file(&iwibdev->ibdev.dev,
2421                                        i40iw_dev_attributes[i]);
2422                 if (ret) {
2423                         while (i > 0) {
2424                                 i--;
2425                                 device_remove_file(&iwibdev->ibdev.dev, i40iw_dev_attributes[i]);
2426                         }
2427                         ib_unregister_device(&iwibdev->ibdev);
2428                         goto error;
2429                 }
2430         }
2431         return 0;
2432 error:
2433         kfree(iwdev->iwibdev->ibdev.iwcm);
2434         iwdev->iwibdev->ibdev.iwcm = NULL;
2435         ib_dealloc_device(&iwdev->iwibdev->ibdev);
2436         return -ENOSYS;
2437 }