drivers/infiniband/hw/bnxt_re/main.c

   1 /*
   2  * Broadcom NetXtreme-E RoCE driver.
   3  *
   4  * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
   5  * Broadcom refers to Broadcom Limited and/or its subsidiaries.
   6  *
   7  * This software is available to you under a choice of one of two
   8  * licenses.  You may choose to be licensed under the terms of the GNU
   9  * General Public License (GPL) Version 2, available from the file
  10  * COPYING in the main directory of this source tree, or the
  11  * BSD license below:
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in
  21  *    the documentation and/or other materials provided with the
  22  *    distribution.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
  25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  26  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  27  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  31  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  32  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  33  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  34  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  * Description: Main component of the bnxt_re driver
  37  */
  38
  39 #include <linux/module.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/ethtool.h>
  42 #include <linux/mutex.h>
  43 #include <linux/list.h>
  44 #include <linux/rculist.h>
  45 #include <linux/spinlock.h>
  46 #include <linux/pci.h>
  47 #include <net/dcbnl.h>
  48 #include <net/ipv6.h>
  49 #include <net/addrconf.h>
  50 #include <linux/if_ether.h>
  51
  52 #include <rdma/ib_verbs.h>
  53 #include <rdma/ib_user_verbs.h>
  54 #include <rdma/ib_umem.h>
  55 #include <rdma/ib_addr.h>
  56
  57 #include "bnxt_ulp.h"
  58 #include "roce_hsi.h"
  59 #include "qplib_res.h"
  60 #include "qplib_sp.h"
  61 #include "qplib_fp.h"
  62 #include "qplib_rcfw.h"
  63 #include "bnxt_re.h"
  64 #include "ib_verbs.h"
  65 #include <rdma/bnxt_re-abi.h>
  66 #include "bnxt.h"
  67 #include "hw_counters.h"
  68
  69 static char version[] =
  70                 BNXT_RE_DESC " v" ROCE_DRV_MODULE_VERSION "\n";
  71
  72 MODULE_AUTHOR("Eddie Wai <eddie.wai@broadcom.com>");
  73 MODULE_DESCRIPTION(BNXT_RE_DESC " Driver");
  74 MODULE_LICENSE("Dual BSD/GPL");
  75
  76 /* globals */
  77 static struct list_head bnxt_re_dev_list = LIST_HEAD_INIT(bnxt_re_dev_list);
  78 /* Mutex to protect the list of bnxt_re devices added */
  79 static DEFINE_MUTEX(bnxt_re_dev_lock);
  80 static struct workqueue_struct *bnxt_re_wq;
  81 static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait);
  82
  83 /* SR-IOV helper functions */
  84
  85 static void bnxt_re_get_sriov_func_type(struct bnxt_re_dev *rdev)
  86 {
  87         struct bnxt *bp;
  88
  89         bp = netdev_priv(rdev->en_dev->net);
  90         if (BNXT_VF(bp))
  91                 rdev->is_virtfn = 1;
  92 }
  93
  94 /* Set the maximum number of each resource that the driver actually wants
  95  * to allocate. This may be up to the maximum number the firmware has
  96  * reserved for the function. The driver may choose to allocate fewer
  97  * resources than the firmware maximum.
  98  */
  99 static void bnxt_re_set_resource_limits(struct bnxt_re_dev *rdev)
 100 {
 101         u32 vf_qps = 0, vf_srqs = 0, vf_cqs = 0, vf_mrws = 0, vf_gids = 0;
 102         u32 i;
 103         u32 vf_pct;
 104         u32 num_vfs;
 105         struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
 106
 107         rdev->qplib_ctx.qpc_count = min_t(u32, BNXT_RE_MAX_QPC_COUNT,
 108                                           dev_attr->max_qp);
 109
 110         rdev->qplib_ctx.mrw_count = BNXT_RE_MAX_MRW_COUNT_256K;
 111         /* Use max_mr from fw since max_mrw does not get set */
 112         rdev->qplib_ctx.mrw_count = min_t(u32, rdev->qplib_ctx.mrw_count,
 113                                           dev_attr->max_mr);
 114         rdev->qplib_ctx.srqc_count = min_t(u32, BNXT_RE_MAX_SRQC_COUNT,
 115                                            dev_attr->max_srq);
 116         rdev->qplib_ctx.cq_count = min_t(u32, BNXT_RE_MAX_CQ_COUNT,
 117                                          dev_attr->max_cq);
 118
 119         for (i = 0; i < MAX_TQM_ALLOC_REQ; i++)
 120                 rdev->qplib_ctx.tqm_count[i] =
 121                 rdev->dev_attr.tqm_alloc_reqs[i];
 122
 123         if (rdev->num_vfs) {
 124                 /*
 125                  * Reserve a set of resources for the PF. Divide the remaining
 126                  * resources among the VFs
 127                  */
 128                 vf_pct = 100 - BNXT_RE_PCT_RSVD_FOR_PF;
 129                 num_vfs = 100 * rdev->num_vfs;
 130                 vf_qps = (rdev->qplib_ctx.qpc_count * vf_pct) / num_vfs;
 131                 vf_srqs = (rdev->qplib_ctx.srqc_count * vf_pct) / num_vfs;
 132                 vf_cqs = (rdev->qplib_ctx.cq_count * vf_pct) / num_vfs;
 133                 /*
 134                  * The driver allows many more MRs than other resources. If the
 135                  * firmware does also, then reserve a fixed amount for the PF
 136                  * and divide the rest among VFs. VFs may use many MRs for NFS
 137                  * mounts, ISER, NVME applications, etc. If the firmware
 138                  * severely restricts the number of MRs, then let PF have
 139                  * half and divide the rest among VFs, as for the other
 140                  * resource types.
 141                  */
 142                 if (rdev->qplib_ctx.mrw_count < BNXT_RE_MAX_MRW_COUNT_64K)
 143                         vf_mrws = rdev->qplib_ctx.mrw_count * vf_pct / num_vfs;
 144                 else
 145                         vf_mrws = (rdev->qplib_ctx.mrw_count -
 146                                    BNXT_RE_RESVD_MR_FOR_PF) / rdev->num_vfs;
 147                 vf_gids = BNXT_RE_MAX_GID_PER_VF;
 148         }
 149         rdev->qplib_ctx.vf_res.max_mrw_per_vf = vf_mrws;
 150         rdev->qplib_ctx.vf_res.max_gid_per_vf = vf_gids;
 151         rdev->qplib_ctx.vf_res.max_qp_per_vf = vf_qps;
 152         rdev->qplib_ctx.vf_res.max_srq_per_vf = vf_srqs;
 153         rdev->qplib_ctx.vf_res.max_cq_per_vf = vf_cqs;
 154 }
 155
 156 /* for handling bnxt_en callbacks later */
 157 static void bnxt_re_stop(void *p)
 158 {
 159 }
 160
 161 static void bnxt_re_start(void *p)
 162 {
 163 }
 164
 165 static void bnxt_re_sriov_config(void *p, int num_vfs)
 166 {
 167         struct bnxt_re_dev *rdev = p;
 168
 169         if (!rdev)
 170                 return;
 171
 172         rdev->num_vfs = num_vfs;
 173         bnxt_re_set_resource_limits(rdev);
 174         bnxt_qplib_set_func_resources(&rdev->qplib_res, &rdev->rcfw,
 175                                       &rdev->qplib_ctx);
 176 }
 177
 178 static void bnxt_re_shutdown(void *p)
 179 {
 180         struct bnxt_re_dev *rdev = p;
 181
 182         if (!rdev)
 183                 return;
 184
 185         bnxt_re_ib_unreg(rdev, false);
 186 }
 187
 188 static struct bnxt_ulp_ops bnxt_re_ulp_ops = {
 189         .ulp_async_notifier = NULL,
 190         .ulp_stop = bnxt_re_stop,
 191         .ulp_start = bnxt_re_start,
 192         .ulp_sriov_config = bnxt_re_sriov_config,
 193         .ulp_shutdown = bnxt_re_shutdown
 194 };
 195
 196 /* RoCE -> Net driver */
 197
 198 /* Driver registration routines used to let the networking driver (bnxt_en)
 199  * to know that the RoCE driver is now installed
 200  */
 201 static int bnxt_re_unregister_netdev(struct bnxt_re_dev *rdev, bool lock_wait)
 202 {
 203         struct bnxt_en_dev *en_dev;
 204         int rc;
 205
 206         if (!rdev)
 207                 return -EINVAL;
 208
 209         en_dev = rdev->en_dev;
 210         /* Acquire rtnl lock if it is not invokded from netdev event */
 211         if (lock_wait)
 212                 rtnl_lock();
 213
 214         rc = en_dev->en_ops->bnxt_unregister_device(rdev->en_dev,
 215                                                     BNXT_ROCE_ULP);
 216         if (lock_wait)
 217                 rtnl_unlock();
 218         return rc;
 219 }
 220
 221 static int bnxt_re_register_netdev(struct bnxt_re_dev *rdev)
 222 {
 223         struct bnxt_en_dev *en_dev;
 224         int rc = 0;
 225
 226         if (!rdev)
 227                 return -EINVAL;
 228
 229         en_dev = rdev->en_dev;
 230
 231         rtnl_lock();
 232         rc = en_dev->en_ops->bnxt_register_device(en_dev, BNXT_ROCE_ULP,
 233                                                   &bnxt_re_ulp_ops, rdev);
 234         rtnl_unlock();
 235         return rc;
 236 }
 237
 238 static int bnxt_re_free_msix(struct bnxt_re_dev *rdev, bool lock_wait)
 239 {
 240         struct bnxt_en_dev *en_dev;
 241         int rc;
 242
 243         if (!rdev)
 244                 return -EINVAL;
 245
 246         en_dev = rdev->en_dev;
 247
 248         if (lock_wait)
 249                 rtnl_lock();
 250
 251         rc = en_dev->en_ops->bnxt_free_msix(rdev->en_dev, BNXT_ROCE_ULP);
 252
 253         if (lock_wait)
 254                 rtnl_unlock();
 255         return rc;
 256 }
 257
 258 static int bnxt_re_request_msix(struct bnxt_re_dev *rdev)
 259 {
 260         int rc = 0, num_msix_want = BNXT_RE_MAX_MSIX, num_msix_got;
 261         struct bnxt_en_dev *en_dev;
 262
 263         if (!rdev)
 264                 return -EINVAL;
 265
 266         en_dev = rdev->en_dev;
 267
 268         num_msix_want = min_t(u32, BNXT_RE_MAX_MSIX, num_online_cpus());
 269
 270         rtnl_lock();
 271         num_msix_got = en_dev->en_ops->bnxt_request_msix(en_dev, BNXT_ROCE_ULP,
 272                                                          rdev->msix_entries,
 273                                                          num_msix_want);
 274         if (num_msix_got < BNXT_RE_MIN_MSIX) {
 275                 rc = -EINVAL;
 276                 goto done;
 277         }
 278         if (num_msix_got != num_msix_want) {
 279                 dev_warn(rdev_to_dev(rdev),
 280                          "Requested %d MSI-X vectors, got %d\n",
 281                          num_msix_want, num_msix_got);
 282         }
 283         rdev->num_msix = num_msix_got;
 284 done:
 285         rtnl_unlock();
 286         return rc;
 287 }
 288
 289 static void bnxt_re_init_hwrm_hdr(struct bnxt_re_dev *rdev, struct input *hdr,
 290                                   u16 opcd, u16 crid, u16 trid)
 291 {
 292         hdr->req_type = cpu_to_le16(opcd);
 293         hdr->cmpl_ring = cpu_to_le16(crid);
 294         hdr->target_id = cpu_to_le16(trid);
 295 }
 296
 297 static void bnxt_re_fill_fw_msg(struct bnxt_fw_msg *fw_msg, void *msg,
 298                                 int msg_len, void *resp, int resp_max_len,
 299                                 int timeout)
 300 {
 301         fw_msg->msg = msg;
 302         fw_msg->msg_len = msg_len;
 303         fw_msg->resp = resp;
 304         fw_msg->resp_max_len = resp_max_len;
 305         fw_msg->timeout = timeout;
 306 }
 307
 308 static int bnxt_re_net_ring_free(struct bnxt_re_dev *rdev, u16 fw_ring_id,
 309                                  bool lock_wait)
 310 {
 311         struct bnxt_en_dev *en_dev = rdev->en_dev;
 312         struct hwrm_ring_free_input req = {0};
 313         struct hwrm_ring_free_output resp;
 314         struct bnxt_fw_msg fw_msg;
 315         bool do_unlock = false;
 316         int rc = -EINVAL;
 317
 318         if (!en_dev)
 319                 return rc;
 320
 321         memset(&fw_msg, 0, sizeof(fw_msg));
 322         if (lock_wait) {
 323                 rtnl_lock();
 324                 do_unlock = true;
 325         }
 326
 327         bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_FREE, -1, -1);
 328         req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
 329         req.ring_id = cpu_to_le16(fw_ring_id);
 330         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
 331                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
 332         rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
 333         if (rc)
 334                 dev_err(rdev_to_dev(rdev),
 335                         "Failed to free HW ring:%d :%#x", req.ring_id, rc);
 336         if (do_unlock)
 337                 rtnl_unlock();
 338         return rc;
 339 }
 340
 341 static int bnxt_re_net_ring_alloc(struct bnxt_re_dev *rdev, dma_addr_t *dma_arr,
 342                                   int pages, int type, u32 ring_mask,
 343                                   u32 map_index, u16 *fw_ring_id)
 344 {
 345         struct bnxt_en_dev *en_dev = rdev->en_dev;
 346         struct hwrm_ring_alloc_input req = {0};
 347         struct hwrm_ring_alloc_output resp;
 348         struct bnxt_fw_msg fw_msg;
 349         int rc = -EINVAL;
 350
 351         if (!en_dev)
 352                 return rc;
 353
 354         memset(&fw_msg, 0, sizeof(fw_msg));
 355         rtnl_lock();
 356         bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_ALLOC, -1, -1);
 357         req.enables = 0;
 358         req.page_tbl_addr =  cpu_to_le64(dma_arr[0]);
 359         if (pages > 1) {
 360                 /* Page size is in log2 units */
 361                 req.page_size = BNXT_PAGE_SHIFT;
 362                 req.page_tbl_depth = 1;
 363         }
 364         req.fbo = 0;
 365         /* Association of ring index with doorbell index and MSIX number */
 366         req.logical_id = cpu_to_le16(map_index);
 367         req.length = cpu_to_le32(ring_mask + 1);
 368         req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
 369         req.int_mode = RING_ALLOC_REQ_INT_MODE_MSIX;
 370         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
 371                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
 372         rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
 373         if (!rc)
 374                 *fw_ring_id = le16_to_cpu(resp.ring_id);
 375
 376         rtnl_unlock();
 377         return rc;
 378 }
 379
 380 static int bnxt_re_net_stats_ctx_free(struct bnxt_re_dev *rdev,
 381                                       u32 fw_stats_ctx_id, bool lock_wait)
 382 {
 383         struct bnxt_en_dev *en_dev = rdev->en_dev;
 384         struct hwrm_stat_ctx_free_input req = {0};
 385         struct bnxt_fw_msg fw_msg;
 386         bool do_unlock = false;
 387         int rc = -EINVAL;
 388
 389         if (!en_dev)
 390                 return rc;
 391
 392         memset(&fw_msg, 0, sizeof(fw_msg));
 393         if (lock_wait) {
 394                 rtnl_lock();
 395                 do_unlock = true;
 396         }
 397
 398         bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_FREE, -1, -1);
 399         req.stat_ctx_id = cpu_to_le32(fw_stats_ctx_id);
 400         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&req,
 401                             sizeof(req), DFLT_HWRM_CMD_TIMEOUT);
 402         rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
 403         if (rc)
 404                 dev_err(rdev_to_dev(rdev),
 405                         "Failed to free HW stats context %#x", rc);
 406
 407         if (do_unlock)
 408                 rtnl_unlock();
 409         return rc;
 410 }
 411
 412 static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev,
 413                                        dma_addr_t dma_map,
 414                                        u32 *fw_stats_ctx_id)
 415 {
 416         struct hwrm_stat_ctx_alloc_output resp = {0};
 417         struct hwrm_stat_ctx_alloc_input req = {0};
 418         struct bnxt_en_dev *en_dev = rdev->en_dev;
 419         struct bnxt_fw_msg fw_msg;
 420         int rc = -EINVAL;
 421
 422         *fw_stats_ctx_id = INVALID_STATS_CTX_ID;
 423
 424         if (!en_dev)
 425                 return rc;
 426
 427         memset(&fw_msg, 0, sizeof(fw_msg));
 428         rtnl_lock();
 429
 430         bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_ALLOC, -1, -1);
 431         req.update_period_ms = cpu_to_le32(1000);
 432         req.stats_dma_addr = cpu_to_le64(dma_map);
 433         req.stat_ctx_flags = STAT_CTX_ALLOC_REQ_STAT_CTX_FLAGS_ROCE;
 434         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
 435                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
 436         rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
 437         if (!rc)
 438                 *fw_stats_ctx_id = le32_to_cpu(resp.stat_ctx_id);
 439
 440         rtnl_unlock();
 441         return rc;
 442 }
 443
 444 /* Device */
 445
 446 static bool is_bnxt_re_dev(struct net_device *netdev)
 447 {
 448         struct ethtool_drvinfo drvinfo;
 449
 450         if (netdev->ethtool_ops && netdev->ethtool_ops->get_drvinfo) {
 451                 memset(&drvinfo, 0, sizeof(drvinfo));
 452                 netdev->ethtool_ops->get_drvinfo(netdev, &drvinfo);
 453
 454                 if (strcmp(drvinfo.driver, "bnxt_en"))
 455                         return false;
 456                 return true;
 457         }
 458         return false;
 459 }
 460
 461 static struct bnxt_re_dev *bnxt_re_from_netdev(struct net_device *netdev)
 462 {
 463         struct bnxt_re_dev *rdev;
 464
 465         rcu_read_lock();
 466         list_for_each_entry_rcu(rdev, &bnxt_re_dev_list, list) {
 467                 if (rdev->netdev == netdev) {
 468                         rcu_read_unlock();
 469                         return rdev;
 470                 }
 471         }
 472         rcu_read_unlock();
 473         return NULL;
 474 }
 475
 476 static void bnxt_re_dev_unprobe(struct net_device *netdev,
 477                                 struct bnxt_en_dev *en_dev)
 478 {
 479         dev_put(netdev);
 480         module_put(en_dev->pdev->driver->driver.owner);
 481 }
 482
 483 static struct bnxt_en_dev *bnxt_re_dev_probe(struct net_device *netdev)
 484 {
 485         struct bnxt *bp = netdev_priv(netdev);
 486         struct bnxt_en_dev *en_dev;
 487         struct pci_dev *pdev;
 488
 489         /* Call bnxt_en's RoCE probe via indirect API */
 490         if (!bp->ulp_probe)
 491                 return ERR_PTR(-EINVAL);
 492
 493         en_dev = bp->ulp_probe(netdev);
 494         if (IS_ERR(en_dev))
 495                 return en_dev;
 496
 497         pdev = en_dev->pdev;
 498         if (!pdev)
 499                 return ERR_PTR(-EINVAL);
 500
 501         if (!(en_dev->flags & BNXT_EN_FLAG_ROCE_CAP)) {
 502                 dev_info(&pdev->dev,
 503                         "%s: probe error: RoCE is not supported on this device",
 504                         ROCE_DRV_MODULE_NAME);
 505                 return ERR_PTR(-ENODEV);
 506         }
 507
 508         /* Bump net device reference count */
 509         if (!try_module_get(pdev->driver->driver.owner))
 510                 return ERR_PTR(-ENODEV);
 511
 512         dev_hold(netdev);
 513
 514         return en_dev;
 515 }
 516
 517 static void bnxt_re_unregister_ib(struct bnxt_re_dev *rdev)
 518 {
 519         ib_unregister_device(&rdev->ibdev);
 520 }
 521
 522 static int bnxt_re_register_ib(struct bnxt_re_dev *rdev)
 523 {
 524         struct ib_device *ibdev = &rdev->ibdev;
 525
 526         /* ib device init */
 527         ibdev->owner = THIS_MODULE;
 528         ibdev->node_type = RDMA_NODE_IB_CA;
 529         strlcpy(ibdev->name, "bnxt_re%d", IB_DEVICE_NAME_MAX);
 530         strlcpy(ibdev->node_desc, BNXT_RE_DESC " HCA",
 531                 strlen(BNXT_RE_DESC) + 5);
 532         ibdev->phys_port_cnt = 1;
 533
 534         bnxt_qplib_get_guid(rdev->netdev->dev_addr, (u8 *)&ibdev->node_guid);
 535
 536         ibdev->num_comp_vectors = 1;
 537         ibdev->dev.parent = &rdev->en_dev->pdev->dev;
 538         ibdev->local_dma_lkey = BNXT_QPLIB_RSVD_LKEY;
 539
 540         /* User space */
 541         ibdev->uverbs_abi_ver = BNXT_RE_ABI_VERSION;
 542         ibdev->uverbs_cmd_mask =
 543                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 544                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 545                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 546                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 547                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 548                         (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 549                         (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
 550                         (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 551                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 552                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 553                         (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
 554                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 555                         (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 556                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 557                         (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 558                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 559                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
 560                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
 561                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
 562                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
 563                         (1ull << IB_USER_VERBS_CMD_CREATE_AH)           |
 564                         (1ull << IB_USER_VERBS_CMD_MODIFY_AH)           |
 565                         (1ull << IB_USER_VERBS_CMD_QUERY_AH)            |
 566                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH);
 567         /* POLL_CQ and REQ_NOTIFY_CQ is directly handled in libbnxt_re */
 568
 569         /* Kernel verbs */
 570         ibdev->query_device             = bnxt_re_query_device;
 571         ibdev->modify_device            = bnxt_re_modify_device;
 572
 573         ibdev->query_port               = bnxt_re_query_port;
 574         ibdev->get_port_immutable       = bnxt_re_get_port_immutable;
 575         ibdev->get_dev_fw_str           = bnxt_re_query_fw_str;
 576         ibdev->query_pkey               = bnxt_re_query_pkey;
 577         ibdev->query_gid                = bnxt_re_query_gid;
 578         ibdev->get_netdev               = bnxt_re_get_netdev;
 579         ibdev->add_gid                  = bnxt_re_add_gid;
 580         ibdev->del_gid                  = bnxt_re_del_gid;
 581         ibdev->get_link_layer           = bnxt_re_get_link_layer;
 582
 583         ibdev->alloc_pd                 = bnxt_re_alloc_pd;
 584         ibdev->dealloc_pd               = bnxt_re_dealloc_pd;
 585
 586         ibdev->create_ah                = bnxt_re_create_ah;
 587         ibdev->modify_ah                = bnxt_re_modify_ah;
 588         ibdev->query_ah                 = bnxt_re_query_ah;
 589         ibdev->destroy_ah               = bnxt_re_destroy_ah;
 590
 591         ibdev->create_srq               = bnxt_re_create_srq;
 592         ibdev->modify_srq               = bnxt_re_modify_srq;
 593         ibdev->query_srq                = bnxt_re_query_srq;
 594         ibdev->destroy_srq              = bnxt_re_destroy_srq;
 595         ibdev->post_srq_recv            = bnxt_re_post_srq_recv;
 596
 597         ibdev->create_qp                = bnxt_re_create_qp;
 598         ibdev->modify_qp                = bnxt_re_modify_qp;
 599         ibdev->query_qp                 = bnxt_re_query_qp;
 600         ibdev->destroy_qp               = bnxt_re_destroy_qp;
 601
 602         ibdev->post_send                = bnxt_re_post_send;
 603         ibdev->post_recv                = bnxt_re_post_recv;
 604
 605         ibdev->create_cq                = bnxt_re_create_cq;
 606         ibdev->destroy_cq               = bnxt_re_destroy_cq;
 607         ibdev->poll_cq                  = bnxt_re_poll_cq;
 608         ibdev->req_notify_cq            = bnxt_re_req_notify_cq;
 609
 610         ibdev->get_dma_mr               = bnxt_re_get_dma_mr;
 611         ibdev->dereg_mr                 = bnxt_re_dereg_mr;
 612         ibdev->alloc_mr                 = bnxt_re_alloc_mr;
 613         ibdev->map_mr_sg                = bnxt_re_map_mr_sg;
 614
 615         ibdev->reg_user_mr              = bnxt_re_reg_user_mr;
 616         ibdev->alloc_ucontext           = bnxt_re_alloc_ucontext;
 617         ibdev->dealloc_ucontext         = bnxt_re_dealloc_ucontext;
 618         ibdev->mmap                     = bnxt_re_mmap;
 619         ibdev->get_hw_stats             = bnxt_re_ib_get_hw_stats;
 620         ibdev->alloc_hw_stats           = bnxt_re_ib_alloc_hw_stats;
 621
 622         return ib_register_device(ibdev, NULL);
 623 }
 624
 625 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 626                         char *buf)
 627 {
 628         struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev);
 629
 630         return scnprintf(buf, PAGE_SIZE, "0x%x\n", rdev->en_dev->pdev->vendor);
 631 }
 632
 633 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 634                         char *buf)
 635 {
 636         struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev);
 637
 638         return scnprintf(buf, PAGE_SIZE, "%s\n", rdev->ibdev.node_desc);
 639 }
 640
 641 static DEVICE_ATTR(hw_rev, 0444, show_rev, NULL);
 642 static DEVICE_ATTR(hca_type, 0444, show_hca, NULL);
 643
 644 static struct device_attribute *bnxt_re_attributes[] = {
 645         &dev_attr_hw_rev,
 646         &dev_attr_hca_type
 647 };
 648
 649 static void bnxt_re_dev_remove(struct bnxt_re_dev *rdev)
 650 {
 651         dev_put(rdev->netdev);
 652         rdev->netdev = NULL;
 653
 654         mutex_lock(&bnxt_re_dev_lock);
 655         list_del_rcu(&rdev->list);
 656         mutex_unlock(&bnxt_re_dev_lock);
 657
 658         synchronize_rcu();
 659
 660         ib_dealloc_device(&rdev->ibdev);
 661         /* rdev is gone */
 662 }
 663
 664 static struct bnxt_re_dev *bnxt_re_dev_add(struct net_device *netdev,
 665                                            struct bnxt_en_dev *en_dev)
 666 {
 667         struct bnxt_re_dev *rdev;
 668
 669         /* Allocate bnxt_re_dev instance here */
 670         rdev = (struct bnxt_re_dev *)ib_alloc_device(sizeof(*rdev));
 671         if (!rdev) {
 672                 dev_err(NULL, "%s: bnxt_re_dev allocation failure!",
 673                         ROCE_DRV_MODULE_NAME);
 674                 return NULL;
 675         }
 676         /* Default values */
 677         rdev->netdev = netdev;
 678         dev_hold(rdev->netdev);
 679         rdev->en_dev = en_dev;
 680         rdev->id = rdev->en_dev->pdev->devfn;
 681         INIT_LIST_HEAD(&rdev->qp_list);
 682         mutex_init(&rdev->qp_lock);
 683         atomic_set(&rdev->qp_count, 0);
 684         atomic_set(&rdev->cq_count, 0);
 685         atomic_set(&rdev->srq_count, 0);
 686         atomic_set(&rdev->mr_count, 0);
 687         atomic_set(&rdev->mw_count, 0);
 688         rdev->cosq[0] = 0xFFFF;
 689         rdev->cosq[1] = 0xFFFF;
 690
 691         mutex_lock(&bnxt_re_dev_lock);
 692         list_add_tail_rcu(&rdev->list, &bnxt_re_dev_list);
 693         mutex_unlock(&bnxt_re_dev_lock);
 694         return rdev;
 695 }
 696
 697 static int bnxt_re_handle_unaffi_async_event(struct creq_func_event
 698                                              *unaffi_async)
 699 {
 700         switch (unaffi_async->event) {
 701         case CREQ_FUNC_EVENT_EVENT_TX_WQE_ERROR:
 702                 break;
 703         case CREQ_FUNC_EVENT_EVENT_TX_DATA_ERROR:
 704                 break;
 705         case CREQ_FUNC_EVENT_EVENT_RX_WQE_ERROR:
 706                 break;
 707         case CREQ_FUNC_EVENT_EVENT_RX_DATA_ERROR:
 708                 break;
 709         case CREQ_FUNC_EVENT_EVENT_CQ_ERROR:
 710                 break;
 711         case CREQ_FUNC_EVENT_EVENT_TQM_ERROR:
 712                 break;
 713         case CREQ_FUNC_EVENT_EVENT_CFCQ_ERROR:
 714                 break;
 715         case CREQ_FUNC_EVENT_EVENT_CFCS_ERROR:
 716                 break;
 717         case CREQ_FUNC_EVENT_EVENT_CFCC_ERROR:
 718                 break;
 719         case CREQ_FUNC_EVENT_EVENT_CFCM_ERROR:
 720                 break;
 721         case CREQ_FUNC_EVENT_EVENT_TIM_ERROR:
 722                 break;
 723         default:
 724                 return -EINVAL;
 725         }
 726         return 0;
 727 }
 728
 729 static int bnxt_re_handle_qp_async_event(struct creq_qp_event *qp_event,
 730                                          struct bnxt_re_qp *qp)
 731 {
 732         struct ib_event event;
 733         unsigned int flags;
 734
 735         if (qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
 736                 flags = bnxt_re_lock_cqs(qp);
 737                 bnxt_qplib_add_flush_qp(&qp->qplib_qp);
 738                 bnxt_re_unlock_cqs(qp, flags);
 739         }
 740
 741         memset(&event, 0, sizeof(event));
 742         if (qp->qplib_qp.srq) {
 743                 event.device = &qp->rdev->ibdev;
 744                 event.element.qp = &qp->ib_qp;
 745                 event.event = IB_EVENT_QP_LAST_WQE_REACHED;
 746         }
 747
 748         if (event.device && qp->ib_qp.event_handler)
 749                 qp->ib_qp.event_handler(&event, qp->ib_qp.qp_context);
 750
 751         return 0;
 752 }
 753
 754 static int bnxt_re_handle_affi_async_event(struct creq_qp_event *affi_async,
 755                                            void *obj)
 756 {
 757         int rc = 0;
 758         u8 event;
 759
 760         if (!obj)
 761                 return rc; /* QP was already dead, still return success */
 762
 763         event = affi_async->event;
 764         if (event == CREQ_QP_EVENT_EVENT_QP_ERROR_NOTIFICATION) {
 765                 struct bnxt_qplib_qp *lib_qp = obj;
 766                 struct bnxt_re_qp *qp = container_of(lib_qp, struct bnxt_re_qp,
 767                                                      qplib_qp);
 768                 rc = bnxt_re_handle_qp_async_event(affi_async, qp);
 769         }
 770         return rc;
 771 }
 772
 773 static int bnxt_re_aeq_handler(struct bnxt_qplib_rcfw *rcfw,
 774                                void *aeqe, void *obj)
 775 {
 776         struct creq_qp_event *affi_async;
 777         struct creq_func_event *unaffi_async;
 778         u8 type;
 779         int rc;
 780
 781         type = ((struct creq_base *)aeqe)->type;
 782         if (type == CREQ_BASE_TYPE_FUNC_EVENT) {
 783                 unaffi_async = aeqe;
 784                 rc = bnxt_re_handle_unaffi_async_event(unaffi_async);
 785         } else {
 786                 affi_async = aeqe;
 787                 rc = bnxt_re_handle_affi_async_event(affi_async, obj);
 788         }
 789
 790         return rc;
 791 }
 792
 793 static int bnxt_re_srqn_handler(struct bnxt_qplib_nq *nq,
 794                                 struct bnxt_qplib_srq *handle, u8 event)
 795 {
 796         struct bnxt_re_srq *srq = container_of(handle, struct bnxt_re_srq,
 797                                                qplib_srq);
 798         struct ib_event ib_event;
 799         int rc = 0;
 800
 801         if (!srq) {
 802                 dev_err(NULL, "%s: SRQ is NULL, SRQN not handled",
 803                         ROCE_DRV_MODULE_NAME);
 804                 rc = -EINVAL;
 805                 goto done;
 806         }
 807         ib_event.device = &srq->rdev->ibdev;
 808         ib_event.element.srq = &srq->ib_srq;
 809         if (event == NQ_SRQ_EVENT_EVENT_SRQ_THRESHOLD_EVENT)
 810                 ib_event.event = IB_EVENT_SRQ_LIMIT_REACHED;
 811         else
 812                 ib_event.event = IB_EVENT_SRQ_ERR;
 813
 814         if (srq->ib_srq.event_handler) {
 815                 /* Lock event_handler? */
 816                 (*srq->ib_srq.event_handler)(&ib_event,
 817                                              srq->ib_srq.srq_context);
 818         }
 819 done:
 820         return rc;
 821 }
 822
 823 static int bnxt_re_cqn_handler(struct bnxt_qplib_nq *nq,
 824                                struct bnxt_qplib_cq *handle)
 825 {
 826         struct bnxt_re_cq *cq = container_of(handle, struct bnxt_re_cq,
 827                                              qplib_cq);
 828
 829         if (!cq) {
 830                 dev_err(NULL, "%s: CQ is NULL, CQN not handled",
 831                         ROCE_DRV_MODULE_NAME);
 832                 return -EINVAL;
 833         }
 834         if (cq->ib_cq.comp_handler) {
 835                 /* Lock comp_handler? */
 836                 (*cq->ib_cq.comp_handler)(&cq->ib_cq, cq->ib_cq.cq_context);
 837         }
 838
 839         return 0;
 840 }
 841
 842 static void bnxt_re_cleanup_res(struct bnxt_re_dev *rdev)
 843 {
 844         int i;
 845
 846         if (rdev->nq[0].hwq.max_elements) {
 847                 for (i = 1; i < rdev->num_msix; i++)
 848                         bnxt_qplib_disable_nq(&rdev->nq[i - 1]);
 849         }
 850
 851         if (rdev->qplib_res.rcfw)
 852                 bnxt_qplib_cleanup_res(&rdev->qplib_res);
 853 }
 854
 855 static int bnxt_re_init_res(struct bnxt_re_dev *rdev)
 856 {
 857         int rc = 0, i;
 858
 859         bnxt_qplib_init_res(&rdev->qplib_res);
 860
 861         for (i = 1; i < rdev->num_msix ; i++) {
 862                 rc = bnxt_qplib_enable_nq(rdev->en_dev->pdev, &rdev->nq[i - 1],
 863                                           i - 1, rdev->msix_entries[i].vector,
 864                                           rdev->msix_entries[i].db_offset,
 865                                           &bnxt_re_cqn_handler,
 866                                           &bnxt_re_srqn_handler);
 867
 868                 if (rc) {
 869                         dev_err(rdev_to_dev(rdev),
 870                                 "Failed to enable NQ with rc = 0x%x", rc);
 871                         goto fail;
 872                 }
 873         }
 874         return 0;
 875 fail:
 876         return rc;
 877 }
 878
 879 static void bnxt_re_free_nq_res(struct bnxt_re_dev *rdev, bool lock_wait)
 880 {
 881         int i;
 882
 883         for (i = 0; i < rdev->num_msix - 1; i++) {
 884                 bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id, lock_wait);
 885                 bnxt_qplib_free_nq(&rdev->nq[i]);
 886         }
 887 }
 888
 889 static void bnxt_re_free_res(struct bnxt_re_dev *rdev, bool lock_wait)
 890 {
 891         bnxt_re_free_nq_res(rdev, lock_wait);
 892
 893         if (rdev->qplib_res.dpi_tbl.max) {
 894                 bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
 895                                        &rdev->qplib_res.dpi_tbl,
 896                                        &rdev->dpi_privileged);
 897         }
 898         if (rdev->qplib_res.rcfw) {
 899                 bnxt_qplib_free_res(&rdev->qplib_res);
 900                 rdev->qplib_res.rcfw = NULL;
 901         }
 902 }
 903
 904 static int bnxt_re_alloc_res(struct bnxt_re_dev *rdev)
 905 {
 906         int rc = 0, i;
 907
 908         /* Configure and allocate resources for qplib */
 909         rdev->qplib_res.rcfw = &rdev->rcfw;
 910         rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr,
 911                                      rdev->is_virtfn);
 912         if (rc)
 913                 goto fail;
 914
 915         rc = bnxt_qplib_alloc_res(&rdev->qplib_res, rdev->en_dev->pdev,
 916                                   rdev->netdev, &rdev->dev_attr);
 917         if (rc)
 918                 goto fail;
 919
 920         rc = bnxt_qplib_alloc_dpi(&rdev->qplib_res.dpi_tbl,
 921                                   &rdev->dpi_privileged,
 922                                   rdev);
 923         if (rc)
 924                 goto dealloc_res;
 925
 926         for (i = 0; i < rdev->num_msix - 1; i++) {
 927                 rdev->nq[i].hwq.max_elements = BNXT_RE_MAX_CQ_COUNT +
 928                         BNXT_RE_MAX_SRQC_COUNT + 2;
 929                 rc = bnxt_qplib_alloc_nq(rdev->en_dev->pdev, &rdev->nq[i]);
 930                 if (rc) {
 931                         dev_err(rdev_to_dev(rdev), "Alloc Failed NQ%d rc:%#x",
 932                                 i, rc);
 933                         goto dealloc_dpi;
 934                 }
 935                 rc = bnxt_re_net_ring_alloc
 936                         (rdev, rdev->nq[i].hwq.pbl[PBL_LVL_0].pg_map_arr,
 937                          rdev->nq[i].hwq.pbl[rdev->nq[i].hwq.level].pg_count,
 938                          HWRM_RING_ALLOC_CMPL,
 939                          BNXT_QPLIB_NQE_MAX_CNT - 1,
 940                          rdev->msix_entries[i + 1].ring_idx,
 941                          &rdev->nq[i].ring_id);
 942                 if (rc) {
 943                         dev_err(rdev_to_dev(rdev),
 944                                 "Failed to allocate NQ fw id with rc = 0x%x",
 945                                 rc);
 946                         goto free_nq;
 947                 }
 948         }
 949         return 0;
 950 free_nq:
 951         for (i = 0; i < rdev->num_msix - 1; i++)
 952                 bnxt_qplib_free_nq(&rdev->nq[i]);
 953 dealloc_dpi:
 954         bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
 955                                &rdev->qplib_res.dpi_tbl,
 956                                &rdev->dpi_privileged);
 957 dealloc_res:
 958         bnxt_qplib_free_res(&rdev->qplib_res);
 959
 960 fail:
 961         rdev->qplib_res.rcfw = NULL;
 962         return rc;
 963 }
 964
 965 static void bnxt_re_dispatch_event(struct ib_device *ibdev, struct ib_qp *qp,
 966                                    u8 port_num, enum ib_event_type event)
 967 {
 968         struct ib_event ib_event;
 969
 970         ib_event.device = ibdev;
 971         if (qp)
 972                 ib_event.element.qp = qp;
 973         else
 974                 ib_event.element.port_num = port_num;
 975         ib_event.event = event;
 976         ib_dispatch_event(&ib_event);
 977 }
 978
 979 #define HWRM_QUEUE_PRI2COS_QCFG_INPUT_FLAGS_IVLAN      0x02
 980 static int bnxt_re_query_hwrm_pri2cos(struct bnxt_re_dev *rdev, u8 dir,
 981                                       u64 *cid_map)
 982 {
 983         struct hwrm_queue_pri2cos_qcfg_input req = {0};
 984         struct bnxt *bp = netdev_priv(rdev->netdev);
 985         struct hwrm_queue_pri2cos_qcfg_output resp;
 986         struct bnxt_en_dev *en_dev = rdev->en_dev;
 987         struct bnxt_fw_msg fw_msg;
 988         u32 flags = 0;
 989         u8 *qcfgmap, *tmp_map;
 990         int rc = 0, i;
 991
 992         if (!cid_map)
 993                 return -EINVAL;
 994
 995         memset(&fw_msg, 0, sizeof(fw_msg));
 996         bnxt_re_init_hwrm_hdr(rdev, (void *)&req,
 997                               HWRM_QUEUE_PRI2COS_QCFG, -1, -1);
 998         flags |= (dir & 0x01);
 999         flags |= HWRM_QUEUE_PRI2COS_QCFG_INPUT_FLAGS_IVLAN;
1000         req.flags = cpu_to_le32(flags);
1001         req.port_id = bp->pf.port_id;
1002
1003         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
1004                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
1005         rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
1006         if (rc)
1007                 return rc;
1008
1009         if (resp.queue_cfg_info) {
1010                 dev_warn(rdev_to_dev(rdev),
1011                          "Asymmetric cos queue configuration detected");
1012                 dev_warn(rdev_to_dev(rdev),
1013                          " on device, QoS may not be fully functional\n");
1014         }
1015         qcfgmap = &resp.pri0_cos_queue_id;
1016         tmp_map = (u8 *)cid_map;
1017         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
1018                 tmp_map[i] = qcfgmap[i];
1019
1020         return rc;
1021 }
1022
1023 static bool bnxt_re_is_qp1_or_shadow_qp(struct bnxt_re_dev *rdev,
1024                                         struct bnxt_re_qp *qp)
1025 {
1026         return (qp->ib_qp.qp_type == IB_QPT_GSI) || (qp == rdev->qp1_sqp);
1027 }
1028
1029 static void bnxt_re_dev_stop(struct bnxt_re_dev *rdev)
1030 {
1031         int mask = IB_QP_STATE;
1032         struct ib_qp_attr qp_attr;
1033         struct bnxt_re_qp *qp;
1034
1035         qp_attr.qp_state = IB_QPS_ERR;
1036         mutex_lock(&rdev->qp_lock);
1037         list_for_each_entry(qp, &rdev->qp_list, list) {
1038                 /* Modify the state of all QPs except QP1/Shadow QP */
1039                 if (!bnxt_re_is_qp1_or_shadow_qp(rdev, qp)) {
1040                         if (qp->qplib_qp.state !=
1041                             CMDQ_MODIFY_QP_NEW_STATE_RESET &&
1042                             qp->qplib_qp.state !=
1043                             CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1044                                 bnxt_re_dispatch_event(&rdev->ibdev, &qp->ib_qp,
1045                                                        1, IB_EVENT_QP_FATAL);
1046                                 bnxt_re_modify_qp(&qp->ib_qp, &qp_attr, mask,
1047                                                   NULL);
1048                         }
1049                 }
1050         }
1051         mutex_unlock(&rdev->qp_lock);
1052 }
1053
1054 static int bnxt_re_update_gid(struct bnxt_re_dev *rdev)
1055 {
1056         struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl;
1057         struct bnxt_qplib_gid gid;
1058         u16 gid_idx, index;
1059         int rc = 0;
1060
1061         if (!test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags))
1062                 return 0;
1063
1064         if (!sgid_tbl) {
1065                 dev_err(rdev_to_dev(rdev), "QPLIB: SGID table not allocated");
1066                 return -EINVAL;
1067         }
1068
1069         for (index = 0; index < sgid_tbl->active; index++) {
1070                 gid_idx = sgid_tbl->hw_id[index];
1071
1072                 if (!memcmp(&sgid_tbl->tbl[index], &bnxt_qplib_gid_zero,
1073                             sizeof(bnxt_qplib_gid_zero)))
1074                         continue;
1075                 /* need to modify the VLAN enable setting of non VLAN GID only
1076                  * as setting is done for VLAN GID while adding GID
1077                  */
1078                 if (sgid_tbl->vlan[index])
1079                         continue;
1080
1081                 memcpy(&gid, &sgid_tbl->tbl[index], sizeof(gid));
1082
1083                 rc = bnxt_qplib_update_sgid(sgid_tbl, &gid, gid_idx,
1084                                             rdev->qplib_res.netdev->dev_addr);
1085         }
1086
1087         return rc;
1088 }
1089
1090 static u32 bnxt_re_get_priority_mask(struct bnxt_re_dev *rdev)
1091 {
1092         u32 prio_map = 0, tmp_map = 0;
1093         struct net_device *netdev;
1094         struct dcb_app app;
1095
1096         netdev = rdev->netdev;
1097
1098         memset(&app, 0, sizeof(app));
1099         app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
1100         app.protocol = ETH_P_IBOE;
1101         tmp_map = dcb_ieee_getapp_mask(netdev, &app);
1102         prio_map = tmp_map;
1103
1104         app.selector = IEEE_8021QAZ_APP_SEL_DGRAM;
1105         app.protocol = ROCE_V2_UDP_DPORT;
1106         tmp_map = dcb_ieee_getapp_mask(netdev, &app);
1107         prio_map |= tmp_map;
1108
1109         return prio_map;
1110 }
1111
1112 static void bnxt_re_parse_cid_map(u8 prio_map, u8 *cid_map, u16 *cosq)
1113 {
1114         u16 prio;
1115         u8 id;
1116
1117         for (prio = 0, id = 0; prio < 8; prio++) {
1118                 if (prio_map & (1 << prio)) {
1119                         cosq[id] = cid_map[prio];
1120                         id++;
1121                         if (id == 2) /* Max 2 tcs supported */
1122                                 break;
1123                 }
1124         }
1125 }
1126
1127 static int bnxt_re_setup_qos(struct bnxt_re_dev *rdev)
1128 {
1129         u8 prio_map = 0;
1130         u64 cid_map;
1131         int rc;
1132
1133         /* Get priority for roce */
1134         prio_map = bnxt_re_get_priority_mask(rdev);
1135
1136         if (prio_map == rdev->cur_prio_map)
1137                 return 0;
1138         rdev->cur_prio_map = prio_map;
1139         /* Get cosq id for this priority */
1140         rc = bnxt_re_query_hwrm_pri2cos(rdev, 0, &cid_map);
1141         if (rc) {
1142                 dev_warn(rdev_to_dev(rdev), "no cos for p_mask %x\n", prio_map);
1143                 return rc;
1144         }
1145         /* Parse CoS IDs for app priority */
1146         bnxt_re_parse_cid_map(prio_map, (u8 *)&cid_map, rdev->cosq);
1147
1148         /* Config BONO. */
1149         rc = bnxt_qplib_map_tc2cos(&rdev->qplib_res, rdev->cosq);
1150         if (rc) {
1151                 dev_warn(rdev_to_dev(rdev), "no tc for cos{%x, %x}\n",
1152                          rdev->cosq[0], rdev->cosq[1]);
1153                 return rc;
1154         }
1155
1156         /* Actual priorities are not programmed as they are already
1157          * done by L2 driver; just enable or disable priority vlan tagging
1158          */
1159         if ((prio_map == 0 && rdev->qplib_res.prio) ||
1160             (prio_map != 0 && !rdev->qplib_res.prio)) {
1161                 rdev->qplib_res.prio = prio_map ? true : false;
1162
1163                 bnxt_re_update_gid(rdev);
1164         }
1165
1166         return 0;
1167 }
1168
1169 static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait)
1170 {
1171         int i, rc;
1172
1173         if (test_and_clear_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags)) {
1174                 for (i = 0; i < ARRAY_SIZE(bnxt_re_attributes); i++)
1175                         device_remove_file(&rdev->ibdev.dev,
1176                                            bnxt_re_attributes[i]);
1177                 /* Cleanup ib dev */
1178                 bnxt_re_unregister_ib(rdev);
1179         }
1180         if (test_and_clear_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags))
1181                 cancel_delayed_work(&rdev->worker);
1182
1183         bnxt_re_cleanup_res(rdev);
1184         bnxt_re_free_res(rdev, lock_wait);
1185
1186         if (test_and_clear_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags)) {
1187                 rc = bnxt_qplib_deinit_rcfw(&rdev->rcfw);
1188                 if (rc)
1189                         dev_warn(rdev_to_dev(rdev),
1190                                  "Failed to deinitialize RCFW: %#x", rc);
1191                 bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id,
1192                                            lock_wait);
1193                 bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx);
1194                 bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
1195                 bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id, lock_wait);
1196                 bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
1197         }
1198         if (test_and_clear_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags)) {
1199                 rc = bnxt_re_free_msix(rdev, lock_wait);
1200                 if (rc)
1201                         dev_warn(rdev_to_dev(rdev),
1202                                  "Failed to free MSI-X vectors: %#x", rc);
1203         }
1204         if (test_and_clear_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags)) {
1205                 rc = bnxt_re_unregister_netdev(rdev, lock_wait);
1206                 if (rc)
1207                         dev_warn(rdev_to_dev(rdev),
1208                                  "Failed to unregister with netdev: %#x", rc);
1209         }
1210 }
1211
1212 /* worker thread for polling periodic events. Now used for QoS programming*/
1213 static void bnxt_re_worker(struct work_struct *work)
1214 {
1215         struct bnxt_re_dev *rdev = container_of(work, struct bnxt_re_dev,
1216                                                 worker.work);
1217
1218         bnxt_re_setup_qos(rdev);
1219         schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
1220 }
1221
1222 static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev)
1223 {
1224         int i, j, rc;
1225
1226         /* Registered a new RoCE device instance to netdev */
1227         rc = bnxt_re_register_netdev(rdev);
1228         if (rc) {
1229                 pr_err("Failed to register with netedev: %#x\n", rc);
1230                 return -EINVAL;
1231         }
1232         set_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags);
1233
1234         /* Check whether VF or PF */
1235         bnxt_re_get_sriov_func_type(rdev);
1236
1237         rc = bnxt_re_request_msix(rdev);
1238         if (rc) {
1239                 pr_err("Failed to get MSI-X vectors: %#x\n", rc);
1240                 rc = -EINVAL;
1241                 goto fail;
1242         }
1243         set_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags);
1244
1245         /* Establish RCFW Communication Channel to initialize the context
1246          * memory for the function and all child VFs
1247          */
1248         rc = bnxt_qplib_alloc_rcfw_channel(rdev->en_dev->pdev, &rdev->rcfw,
1249                                            BNXT_RE_MAX_QPC_COUNT);
1250         if (rc) {
1251                 pr_err("Failed to allocate RCFW Channel: %#x\n", rc);
1252                 goto fail;
1253         }
1254         rc = bnxt_re_net_ring_alloc
1255                         (rdev, rdev->rcfw.creq.pbl[PBL_LVL_0].pg_map_arr,
1256                          rdev->rcfw.creq.pbl[rdev->rcfw.creq.level].pg_count,
1257                          HWRM_RING_ALLOC_CMPL, BNXT_QPLIB_CREQE_MAX_CNT - 1,
1258                          rdev->msix_entries[BNXT_RE_AEQ_IDX].ring_idx,
1259                          &rdev->rcfw.creq_ring_id);
1260         if (rc) {
1261                 pr_err("Failed to allocate CREQ: %#x\n", rc);
1262                 goto free_rcfw;
1263         }
1264         rc = bnxt_qplib_enable_rcfw_channel
1265                                 (rdev->en_dev->pdev, &rdev->rcfw,
1266                                  rdev->msix_entries[BNXT_RE_AEQ_IDX].vector,
1267                                  rdev->msix_entries[BNXT_RE_AEQ_IDX].db_offset,
1268                                  rdev->is_virtfn, &bnxt_re_aeq_handler);
1269         if (rc) {
1270                 pr_err("Failed to enable RCFW channel: %#x\n", rc);
1271                 goto free_ring;
1272         }
1273
1274         rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr,
1275                                      rdev->is_virtfn);
1276         if (rc)
1277                 goto disable_rcfw;
1278         if (!rdev->is_virtfn)
1279                 bnxt_re_set_resource_limits(rdev);
1280
1281         rc = bnxt_qplib_alloc_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx, 0);
1282         if (rc) {
1283                 pr_err("Failed to allocate QPLIB context: %#x\n", rc);
1284                 goto disable_rcfw;
1285         }
1286         rc = bnxt_re_net_stats_ctx_alloc(rdev,
1287                                          rdev->qplib_ctx.stats.dma_map,
1288                                          &rdev->qplib_ctx.stats.fw_id);
1289         if (rc) {
1290                 pr_err("Failed to allocate stats context: %#x\n", rc);
1291                 goto free_ctx;
1292         }
1293
1294         rc = bnxt_qplib_init_rcfw(&rdev->rcfw, &rdev->qplib_ctx,
1295                                   rdev->is_virtfn);
1296         if (rc) {
1297                 pr_err("Failed to initialize RCFW: %#x\n", rc);
1298                 goto free_sctx;
1299         }
1300         set_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags);
1301
1302         /* Resources based on the 'new' device caps */
1303         rc = bnxt_re_alloc_res(rdev);
1304         if (rc) {
1305                 pr_err("Failed to allocate resources: %#x\n", rc);
1306                 goto fail;
1307         }
1308         rc = bnxt_re_init_res(rdev);
1309         if (rc) {
1310                 pr_err("Failed to initialize resources: %#x\n", rc);
1311                 goto fail;
1312         }
1313
1314         if (!rdev->is_virtfn) {
1315                 rc = bnxt_re_setup_qos(rdev);
1316                 if (rc)
1317                         pr_info("RoCE priority not yet configured\n");
1318
1319                 INIT_DELAYED_WORK(&rdev->worker, bnxt_re_worker);
1320                 set_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags);
1321                 schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
1322         }
1323
1324         /* Register ib dev */
1325         rc = bnxt_re_register_ib(rdev);
1326         if (rc) {
1327                 pr_err("Failed to register with IB: %#x\n", rc);
1328                 goto fail;
1329         }
1330         dev_info(rdev_to_dev(rdev), "Device registered successfully");
1331         for (i = 0; i < ARRAY_SIZE(bnxt_re_attributes); i++) {
1332                 rc = device_create_file(&rdev->ibdev.dev,
1333                                         bnxt_re_attributes[i]);
1334                 if (rc) {
1335                         dev_err(rdev_to_dev(rdev),
1336                                 "Failed to create IB sysfs: %#x", rc);
1337                         /* Must clean up all created device files */
1338                         for (j = 0; j < i; j++)
1339                                 device_remove_file(&rdev->ibdev.dev,
1340                                                    bnxt_re_attributes[j]);
1341                         bnxt_re_unregister_ib(rdev);
1342                         goto fail;
1343                 }
1344         }
1345         set_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags);
1346         ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed,
1347                          &rdev->active_width);
1348         set_bit(BNXT_RE_FLAG_ISSUE_ROCE_STATS, &rdev->flags);
1349         bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_PORT_ACTIVE);
1350         bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_GID_CHANGE);
1351
1352         return 0;
1353 free_sctx:
1354         bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id, true);
1355 free_ctx:
1356         bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx);
1357 disable_rcfw:
1358         bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
1359 free_ring:
1360         bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id, true);
1361 free_rcfw:
1362         bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
1363 fail:
1364         bnxt_re_ib_unreg(rdev, true);
1365         return rc;
1366 }
1367
1368 static void bnxt_re_dev_unreg(struct bnxt_re_dev *rdev)
1369 {
1370         struct bnxt_en_dev *en_dev = rdev->en_dev;
1371         struct net_device *netdev = rdev->netdev;
1372
1373         bnxt_re_dev_remove(rdev);
1374
1375         if (netdev)
1376                 bnxt_re_dev_unprobe(netdev, en_dev);
1377 }
1378
1379 static int bnxt_re_dev_reg(struct bnxt_re_dev **rdev, struct net_device *netdev)
1380 {
1381         struct bnxt_en_dev *en_dev;
1382         int rc = 0;
1383
1384         if (!is_bnxt_re_dev(netdev))
1385                 return -ENODEV;
1386
1387         en_dev = bnxt_re_dev_probe(netdev);
1388         if (IS_ERR(en_dev)) {
1389                 if (en_dev != ERR_PTR(-ENODEV))
1390                         pr_err("%s: Failed to probe\n", ROCE_DRV_MODULE_NAME);
1391                 rc = PTR_ERR(en_dev);
1392                 goto exit;
1393         }
1394         *rdev = bnxt_re_dev_add(netdev, en_dev);
1395         if (!*rdev) {
1396                 rc = -ENOMEM;
1397                 bnxt_re_dev_unprobe(netdev, en_dev);
1398                 goto exit;
1399         }
1400 exit:
1401         return rc;
1402 }
1403
1404 static void bnxt_re_remove_one(struct bnxt_re_dev *rdev)
1405 {
1406         pci_dev_put(rdev->en_dev->pdev);
1407 }
1408
1409 /* Handle all deferred netevents tasks */
1410 static void bnxt_re_task(struct work_struct *work)
1411 {
1412         struct bnxt_re_work *re_work;
1413         struct bnxt_re_dev *rdev;
1414         int rc = 0;
1415
1416         re_work = container_of(work, struct bnxt_re_work, work);
1417         rdev = re_work->rdev;
1418
1419         if (re_work->event != NETDEV_REGISTER &&
1420             !test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags))
1421                 return;
1422
1423         switch (re_work->event) {
1424         case NETDEV_REGISTER:
1425                 rc = bnxt_re_ib_reg(rdev);
1426                 if (rc) {
1427                         dev_err(rdev_to_dev(rdev),
1428                                 "Failed to register with IB: %#x", rc);
1429                         bnxt_re_remove_one(rdev);
1430                         bnxt_re_dev_unreg(rdev);
1431                 }
1432                 break;
1433         case NETDEV_UP:
1434                 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
1435                                        IB_EVENT_PORT_ACTIVE);
1436                 break;
1437         case NETDEV_DOWN:
1438                 bnxt_re_dev_stop(rdev);
1439                 break;
1440         case NETDEV_CHANGE:
1441                 if (!netif_carrier_ok(rdev->netdev))
1442                         bnxt_re_dev_stop(rdev);
1443                 else if (netif_carrier_ok(rdev->netdev))
1444                         bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
1445                                                IB_EVENT_PORT_ACTIVE);
1446                 ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed,
1447                                  &rdev->active_width);
1448                 break;
1449         default:
1450                 break;
1451         }
1452         smp_mb__before_atomic();
1453         atomic_dec(&rdev->sched_count);
1454         kfree(re_work);
1455 }
1456
1457 static void bnxt_re_init_one(struct bnxt_re_dev *rdev)
1458 {
1459         pci_dev_get(rdev->en_dev->pdev);
1460 }
1461
1462 /*
1463  * "Notifier chain callback can be invoked for the same chain from
1464  * different CPUs at the same time".
1465  *
1466  * For cases when the netdev is already present, our call to the
1467  * register_netdevice_notifier() will actually get the rtnl_lock()
1468  * before sending NETDEV_REGISTER and (if up) NETDEV_UP
1469  * events.
1470  *
1471  * But for cases when the netdev is not already present, the notifier
1472  * chain is subjected to be invoked from different CPUs simultaneously.
1473  *
1474  * This is protected by the netdev_mutex.
1475  */
1476 static int bnxt_re_netdev_event(struct notifier_block *notifier,
1477                                 unsigned long event, void *ptr)
1478 {
1479         struct net_device *real_dev, *netdev = netdev_notifier_info_to_dev(ptr);
1480         struct bnxt_re_work *re_work;
1481         struct bnxt_re_dev *rdev;
1482         int rc = 0;
1483         bool sch_work = false;
1484
1485         real_dev = rdma_vlan_dev_real_dev(netdev);
1486         if (!real_dev)
1487                 real_dev = netdev;
1488
1489         rdev = bnxt_re_from_netdev(real_dev);
1490         if (!rdev && event != NETDEV_REGISTER)
1491                 goto exit;
1492         if (real_dev != netdev)
1493                 goto exit;
1494
1495         switch (event) {
1496         case NETDEV_REGISTER:
1497                 if (rdev)
1498                         break;
1499                 rc = bnxt_re_dev_reg(&rdev, real_dev);
1500                 if (rc == -ENODEV)
1501                         break;
1502                 if (rc) {
1503                         pr_err("Failed to register with the device %s: %#x\n",
1504                                real_dev->name, rc);
1505                         break;
1506                 }
1507                 bnxt_re_init_one(rdev);
1508                 sch_work = true;
1509                 break;
1510
1511         case NETDEV_UNREGISTER:
1512                 /* netdev notifier will call NETDEV_UNREGISTER again later since
1513                  * we are still holding the reference to the netdev
1514                  */
1515                 if (atomic_read(&rdev->sched_count) > 0)
1516                         goto exit;
1517                 bnxt_re_ib_unreg(rdev, false);
1518                 bnxt_re_remove_one(rdev);
1519                 bnxt_re_dev_unreg(rdev);
1520                 break;
1521
1522         default:
1523                 sch_work = true;
1524                 break;
1525         }
1526         if (sch_work) {
1527                 /* Allocate for the deferred task */
1528                 re_work = kzalloc(sizeof(*re_work), GFP_ATOMIC);
1529                 if (re_work) {
1530                         re_work->rdev = rdev;
1531                         re_work->event = event;
1532                         re_work->vlan_dev = (real_dev == netdev ?
1533                                              NULL : netdev);
1534                         INIT_WORK(&re_work->work, bnxt_re_task);
1535                         atomic_inc(&rdev->sched_count);
1536                         queue_work(bnxt_re_wq, &re_work->work);
1537                 }
1538         }
1539
1540 exit:
1541         return NOTIFY_DONE;
1542 }
1543
1544 static struct notifier_block bnxt_re_netdev_notifier = {
1545         .notifier_call = bnxt_re_netdev_event
1546 };
1547
1548 static int __init bnxt_re_mod_init(void)
1549 {
1550         int rc = 0;
1551
1552         pr_info("%s: %s", ROCE_DRV_MODULE_NAME, version);
1553
1554         bnxt_re_wq = create_singlethread_workqueue("bnxt_re");
1555         if (!bnxt_re_wq)
1556                 return -ENOMEM;
1557
1558         INIT_LIST_HEAD(&bnxt_re_dev_list);
1559
1560         rc = register_netdevice_notifier(&bnxt_re_netdev_notifier);
1561         if (rc) {
1562                 pr_err("%s: Cannot register to netdevice_notifier",
1563                        ROCE_DRV_MODULE_NAME);
1564                 goto err_netdev;
1565         }
1566         return 0;
1567
1568 err_netdev:
1569         destroy_workqueue(bnxt_re_wq);
1570
1571         return rc;
1572 }
1573
1574 static void __exit bnxt_re_mod_exit(void)
1575 {
1576         struct bnxt_re_dev *rdev, *next;
1577         LIST_HEAD(to_be_deleted);
1578
1579         mutex_lock(&bnxt_re_dev_lock);
1580         /* Free all adapter allocated resources */
1581         if (!list_empty(&bnxt_re_dev_list))
1582                 list_splice_init(&bnxt_re_dev_list, &to_be_deleted);
1583         mutex_unlock(&bnxt_re_dev_lock);
1584        /*
1585         * Cleanup the devices in reverse order so that the VF device
1586         * cleanup is done before PF cleanup
1587         */
1588         list_for_each_entry_safe_reverse(rdev, next, &to_be_deleted, list) {
1589                 dev_info(rdev_to_dev(rdev), "Unregistering Device");
1590                 /*
1591                  * Flush out any scheduled tasks before destroying the
1592                  * resources
1593                  */
1594                 flush_workqueue(bnxt_re_wq);
1595                 bnxt_re_dev_stop(rdev);
1596                 bnxt_re_ib_unreg(rdev, true);
1597                 bnxt_re_remove_one(rdev);
1598                 bnxt_re_dev_unreg(rdev);
1599         }
1600         unregister_netdevice_notifier(&bnxt_re_netdev_notifier);
1601         if (bnxt_re_wq)
1602                 destroy_workqueue(bnxt_re_wq);
1603 }
1604
1605 module_init(bnxt_re_mod_init);
1606 module_exit(bnxt_re_mod_exit);