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 #include <linux/auxiliary_bus.h>
  52
  53 #include <rdma/ib_verbs.h>
  54 #include <rdma/ib_user_verbs.h>
  55 #include <rdma/ib_umem.h>
  56 #include <rdma/ib_addr.h>
  57
  58 #include "bnxt_ulp.h"
  59 #include "roce_hsi.h"
  60 #include "qplib_res.h"
  61 #include "qplib_sp.h"
  62 #include "qplib_fp.h"
  63 #include "qplib_rcfw.h"
  64 #include "bnxt_re.h"
  65 #include "ib_verbs.h"
  66 #include <rdma/bnxt_re-abi.h>
  67 #include "bnxt.h"
  68 #include "hw_counters.h"
  69
  70 static char version[] =
  71                 BNXT_RE_DESC "\n";
  72
  73 MODULE_AUTHOR("Eddie Wai <eddie.wai@broadcom.com>");
  74 MODULE_DESCRIPTION(BNXT_RE_DESC " Driver");
  75 MODULE_LICENSE("Dual BSD/GPL");
  76
  77 /* globals */
  78 static DEFINE_MUTEX(bnxt_re_mutex);
  79
  80 static void bnxt_re_stop_irq(void *handle);
  81 static void bnxt_re_dev_stop(struct bnxt_re_dev *rdev);
  82 static int bnxt_re_netdev_event(struct notifier_block *notifier,
  83                                 unsigned long event, void *ptr);
  84 static struct bnxt_re_dev *bnxt_re_from_netdev(struct net_device *netdev);
  85 static void bnxt_re_dev_uninit(struct bnxt_re_dev *rdev);
  86
  87 static void bnxt_re_set_drv_mode(struct bnxt_re_dev *rdev, u8 mode)
  88 {
  89         struct bnxt_qplib_chip_ctx *cctx;
  90
  91         cctx = rdev->chip_ctx;
  92         cctx->modes.wqe_mode = bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx) ?
  93                                mode : BNXT_QPLIB_WQE_MODE_STATIC;
  94 }
  95
  96 static void bnxt_re_destroy_chip_ctx(struct bnxt_re_dev *rdev)
  97 {
  98         struct bnxt_qplib_chip_ctx *chip_ctx;
  99
 100         if (!rdev->chip_ctx)
 101                 return;
 102         chip_ctx = rdev->chip_ctx;
 103         rdev->chip_ctx = NULL;
 104         rdev->rcfw.res = NULL;
 105         rdev->qplib_res.cctx = NULL;
 106         rdev->qplib_res.pdev = NULL;
 107         rdev->qplib_res.netdev = NULL;
 108         kfree(chip_ctx);
 109 }
 110
 111 static int bnxt_re_setup_chip_ctx(struct bnxt_re_dev *rdev, u8 wqe_mode)
 112 {
 113         struct bnxt_qplib_chip_ctx *chip_ctx;
 114         struct bnxt_en_dev *en_dev;
 115
 116         en_dev = rdev->en_dev;
 117
 118         chip_ctx = kzalloc(sizeof(*chip_ctx), GFP_KERNEL);
 119         if (!chip_ctx)
 120                 return -ENOMEM;
 121         chip_ctx->chip_num = en_dev->chip_num;
 122         chip_ctx->hw_stats_size = en_dev->hw_ring_stats_size;
 123
 124         rdev->chip_ctx = chip_ctx;
 125         /* rest members to follow eventually */
 126
 127         rdev->qplib_res.cctx = rdev->chip_ctx;
 128         rdev->rcfw.res = &rdev->qplib_res;
 129         rdev->qplib_res.dattr = &rdev->dev_attr;
 130         rdev->qplib_res.is_vf = BNXT_EN_VF(en_dev);
 131
 132         bnxt_re_set_drv_mode(rdev, wqe_mode);
 133         if (bnxt_qplib_determine_atomics(en_dev->pdev))
 134                 ibdev_info(&rdev->ibdev,
 135                            "platform doesn't support global atomics.");
 136         return 0;
 137 }
 138
 139 /* SR-IOV helper functions */
 140
 141 static void bnxt_re_get_sriov_func_type(struct bnxt_re_dev *rdev)
 142 {
 143         if (BNXT_EN_VF(rdev->en_dev))
 144                 rdev->is_virtfn = 1;
 145 }
 146
 147 /* Set the maximum number of each resource that the driver actually wants
 148  * to allocate. This may be up to the maximum number the firmware has
 149  * reserved for the function. The driver may choose to allocate fewer
 150  * resources than the firmware maximum.
 151  */
 152 static void bnxt_re_limit_pf_res(struct bnxt_re_dev *rdev)
 153 {
 154         struct bnxt_qplib_dev_attr *attr;
 155         struct bnxt_qplib_ctx *ctx;
 156         int i;
 157
 158         attr = &rdev->dev_attr;
 159         ctx = &rdev->qplib_ctx;
 160
 161         ctx->qpc_count = min_t(u32, BNXT_RE_MAX_QPC_COUNT,
 162                                attr->max_qp);
 163         ctx->mrw_count = BNXT_RE_MAX_MRW_COUNT_256K;
 164         /* Use max_mr from fw since max_mrw does not get set */
 165         ctx->mrw_count = min_t(u32, ctx->mrw_count, attr->max_mr);
 166         ctx->srqc_count = min_t(u32, BNXT_RE_MAX_SRQC_COUNT,
 167                                 attr->max_srq);
 168         ctx->cq_count = min_t(u32, BNXT_RE_MAX_CQ_COUNT, attr->max_cq);
 169         if (!bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx))
 170                 for (i = 0; i < MAX_TQM_ALLOC_REQ; i++)
 171                         rdev->qplib_ctx.tqm_ctx.qcount[i] =
 172                         rdev->dev_attr.tqm_alloc_reqs[i];
 173 }
 174
 175 static void bnxt_re_limit_vf_res(struct bnxt_qplib_ctx *qplib_ctx, u32 num_vf)
 176 {
 177         struct bnxt_qplib_vf_res *vf_res;
 178         u32 mrws = 0;
 179         u32 vf_pct;
 180         u32 nvfs;
 181
 182         vf_res = &qplib_ctx->vf_res;
 183         /*
 184          * Reserve a set of resources for the PF. Divide the remaining
 185          * resources among the VFs
 186          */
 187         vf_pct = 100 - BNXT_RE_PCT_RSVD_FOR_PF;
 188         nvfs = num_vf;
 189         num_vf = 100 * num_vf;
 190         vf_res->max_qp_per_vf = (qplib_ctx->qpc_count * vf_pct) / num_vf;
 191         vf_res->max_srq_per_vf = (qplib_ctx->srqc_count * vf_pct) / num_vf;
 192         vf_res->max_cq_per_vf = (qplib_ctx->cq_count * vf_pct) / num_vf;
 193         /*
 194          * The driver allows many more MRs than other resources. If the
 195          * firmware does also, then reserve a fixed amount for the PF and
 196          * divide the rest among VFs. VFs may use many MRs for NFS
 197          * mounts, ISER, NVME applications, etc. If the firmware severely
 198          * restricts the number of MRs, then let PF have half and divide
 199          * the rest among VFs, as for the other resource types.
 200          */
 201         if (qplib_ctx->mrw_count < BNXT_RE_MAX_MRW_COUNT_64K) {
 202                 mrws = qplib_ctx->mrw_count * vf_pct;
 203                 nvfs = num_vf;
 204         } else {
 205                 mrws = qplib_ctx->mrw_count - BNXT_RE_RESVD_MR_FOR_PF;
 206         }
 207         vf_res->max_mrw_per_vf = (mrws / nvfs);
 208         vf_res->max_gid_per_vf = BNXT_RE_MAX_GID_PER_VF;
 209 }
 210
 211 static void bnxt_re_set_resource_limits(struct bnxt_re_dev *rdev)
 212 {
 213         u32 num_vfs;
 214
 215         memset(&rdev->qplib_ctx.vf_res, 0, sizeof(struct bnxt_qplib_vf_res));
 216         bnxt_re_limit_pf_res(rdev);
 217
 218         num_vfs =  bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx) ?
 219                         BNXT_RE_GEN_P5_MAX_VF : rdev->num_vfs;
 220         if (num_vfs)
 221                 bnxt_re_limit_vf_res(&rdev->qplib_ctx, num_vfs);
 222 }
 223
 224 static void bnxt_re_vf_res_config(struct bnxt_re_dev *rdev)
 225 {
 226
 227         if (test_bit(BNXT_RE_FLAG_ERR_DEVICE_DETACHED, &rdev->flags))
 228                 return;
 229         rdev->num_vfs = pci_sriov_get_totalvfs(rdev->en_dev->pdev);
 230         if (!bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx)) {
 231                 bnxt_re_set_resource_limits(rdev);
 232                 bnxt_qplib_set_func_resources(&rdev->qplib_res, &rdev->rcfw,
 233                                               &rdev->qplib_ctx);
 234         }
 235 }
 236
 237 static void bnxt_re_shutdown(struct auxiliary_device *adev)
 238 {
 239         struct bnxt_re_dev *rdev = auxiliary_get_drvdata(adev);
 240
 241         if (!rdev)
 242                 return;
 243         ib_unregister_device(&rdev->ibdev);
 244         bnxt_re_dev_uninit(rdev);
 245 }
 246
 247 static void bnxt_re_stop_irq(void *handle)
 248 {
 249         struct bnxt_re_dev *rdev = (struct bnxt_re_dev *)handle;
 250         struct bnxt_qplib_rcfw *rcfw = &rdev->rcfw;
 251         struct bnxt_qplib_nq *nq;
 252         int indx;
 253
 254         for (indx = BNXT_RE_NQ_IDX; indx < rdev->num_msix; indx++) {
 255                 nq = &rdev->nq[indx - 1];
 256                 bnxt_qplib_nq_stop_irq(nq, false);
 257         }
 258
 259         bnxt_qplib_rcfw_stop_irq(rcfw, false);
 260 }
 261
 262 static void bnxt_re_start_irq(void *handle, struct bnxt_msix_entry *ent)
 263 {
 264         struct bnxt_re_dev *rdev = (struct bnxt_re_dev *)handle;
 265         struct bnxt_msix_entry *msix_ent = rdev->en_dev->msix_entries;
 266         struct bnxt_qplib_rcfw *rcfw = &rdev->rcfw;
 267         struct bnxt_qplib_nq *nq;
 268         int indx, rc;
 269
 270         if (!ent) {
 271                 /* Not setting the f/w timeout bit in rcfw.
 272                  * During the driver unload the first command
 273                  * to f/w will timeout and that will set the
 274                  * timeout bit.
 275                  */
 276                 ibdev_err(&rdev->ibdev, "Failed to re-start IRQs\n");
 277                 return;
 278         }
 279
 280         /* Vectors may change after restart, so update with new vectors
 281          * in device sctructure.
 282          */
 283         for (indx = 0; indx < rdev->num_msix; indx++)
 284                 rdev->en_dev->msix_entries[indx].vector = ent[indx].vector;
 285
 286         bnxt_qplib_rcfw_start_irq(rcfw, msix_ent[BNXT_RE_AEQ_IDX].vector,
 287                                   false);
 288         for (indx = BNXT_RE_NQ_IDX ; indx < rdev->num_msix; indx++) {
 289                 nq = &rdev->nq[indx - 1];
 290                 rc = bnxt_qplib_nq_start_irq(nq, indx - 1,
 291                                              msix_ent[indx].vector, false);
 292                 if (rc)
 293                         ibdev_warn(&rdev->ibdev, "Failed to reinit NQ index %d\n",
 294                                    indx - 1);
 295         }
 296 }
 297
 298 static struct bnxt_ulp_ops bnxt_re_ulp_ops = {
 299         .ulp_irq_stop = bnxt_re_stop_irq,
 300         .ulp_irq_restart = bnxt_re_start_irq
 301 };
 302
 303 /* RoCE -> Net driver */
 304
 305 static int bnxt_re_register_netdev(struct bnxt_re_dev *rdev)
 306 {
 307         struct bnxt_en_dev *en_dev;
 308         int rc = 0;
 309
 310         en_dev = rdev->en_dev;
 311
 312         rc = bnxt_register_dev(en_dev, &bnxt_re_ulp_ops, rdev);
 313         if (!rc)
 314                 rdev->qplib_res.pdev = rdev->en_dev->pdev;
 315         return rc;
 316 }
 317
 318 static void bnxt_re_init_hwrm_hdr(struct bnxt_re_dev *rdev, struct input *hdr,
 319                                   u16 opcd, u16 crid, u16 trid)
 320 {
 321         hdr->req_type = cpu_to_le16(opcd);
 322         hdr->cmpl_ring = cpu_to_le16(crid);
 323         hdr->target_id = cpu_to_le16(trid);
 324 }
 325
 326 static void bnxt_re_fill_fw_msg(struct bnxt_fw_msg *fw_msg, void *msg,
 327                                 int msg_len, void *resp, int resp_max_len,
 328                                 int timeout)
 329 {
 330         fw_msg->msg = msg;
 331         fw_msg->msg_len = msg_len;
 332         fw_msg->resp = resp;
 333         fw_msg->resp_max_len = resp_max_len;
 334         fw_msg->timeout = timeout;
 335 }
 336
 337 static int bnxt_re_net_ring_free(struct bnxt_re_dev *rdev,
 338                                  u16 fw_ring_id, int type)
 339 {
 340         struct bnxt_en_dev *en_dev;
 341         struct hwrm_ring_free_input req = {0};
 342         struct hwrm_ring_free_output resp;
 343         struct bnxt_fw_msg fw_msg;
 344         int rc = -EINVAL;
 345
 346         if (!rdev)
 347                 return rc;
 348
 349         en_dev = rdev->en_dev;
 350
 351         if (!en_dev)
 352                 return rc;
 353
 354         if (test_bit(BNXT_RE_FLAG_ERR_DEVICE_DETACHED, &rdev->flags))
 355                 return 0;
 356
 357         memset(&fw_msg, 0, sizeof(fw_msg));
 358
 359         bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_FREE, -1, -1);
 360         req.ring_type = type;
 361         req.ring_id = cpu_to_le16(fw_ring_id);
 362         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
 363                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
 364         rc = bnxt_send_msg(en_dev, &fw_msg);
 365         if (rc)
 366                 ibdev_err(&rdev->ibdev, "Failed to free HW ring:%d :%#x",
 367                           req.ring_id, rc);
 368         return rc;
 369 }
 370
 371 static int bnxt_re_net_ring_alloc(struct bnxt_re_dev *rdev,
 372                                   struct bnxt_re_ring_attr *ring_attr,
 373                                   u16 *fw_ring_id)
 374 {
 375         struct bnxt_en_dev *en_dev = rdev->en_dev;
 376         struct hwrm_ring_alloc_input req = {0};
 377         struct hwrm_ring_alloc_output resp;
 378         struct bnxt_fw_msg fw_msg;
 379         int rc = -EINVAL;
 380
 381         if (!en_dev)
 382                 return rc;
 383
 384         memset(&fw_msg, 0, sizeof(fw_msg));
 385         bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_ALLOC, -1, -1);
 386         req.enables = 0;
 387         req.page_tbl_addr =  cpu_to_le64(ring_attr->dma_arr[0]);
 388         if (ring_attr->pages > 1) {
 389                 /* Page size is in log2 units */
 390                 req.page_size = BNXT_PAGE_SHIFT;
 391                 req.page_tbl_depth = 1;
 392         }
 393         req.fbo = 0;
 394         /* Association of ring index with doorbell index and MSIX number */
 395         req.logical_id = cpu_to_le16(ring_attr->lrid);
 396         req.length = cpu_to_le32(ring_attr->depth + 1);
 397         req.ring_type = ring_attr->type;
 398         req.int_mode = ring_attr->mode;
 399         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
 400                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
 401         rc = bnxt_send_msg(en_dev, &fw_msg);
 402         if (!rc)
 403                 *fw_ring_id = le16_to_cpu(resp.ring_id);
 404
 405         return rc;
 406 }
 407
 408 static int bnxt_re_net_stats_ctx_free(struct bnxt_re_dev *rdev,
 409                                       u32 fw_stats_ctx_id)
 410 {
 411         struct bnxt_en_dev *en_dev = rdev->en_dev;
 412         struct hwrm_stat_ctx_free_input req = {};
 413         struct hwrm_stat_ctx_free_output resp = {};
 414         struct bnxt_fw_msg fw_msg;
 415         int rc = -EINVAL;
 416
 417         if (!en_dev)
 418                 return rc;
 419
 420         if (test_bit(BNXT_RE_FLAG_ERR_DEVICE_DETACHED, &rdev->flags))
 421                 return 0;
 422
 423         memset(&fw_msg, 0, sizeof(fw_msg));
 424
 425         bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_FREE, -1, -1);
 426         req.stat_ctx_id = cpu_to_le32(fw_stats_ctx_id);
 427         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
 428                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
 429         rc = bnxt_send_msg(en_dev, &fw_msg);
 430         if (rc)
 431                 ibdev_err(&rdev->ibdev, "Failed to free HW stats context %#x",
 432                           rc);
 433
 434         return rc;
 435 }
 436
 437 static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev,
 438                                        dma_addr_t dma_map,
 439                                        u32 *fw_stats_ctx_id)
 440 {
 441         struct bnxt_qplib_chip_ctx *chip_ctx = rdev->chip_ctx;
 442         struct hwrm_stat_ctx_alloc_output resp = {0};
 443         struct hwrm_stat_ctx_alloc_input req = {0};
 444         struct bnxt_en_dev *en_dev = rdev->en_dev;
 445         struct bnxt_fw_msg fw_msg;
 446         int rc = -EINVAL;
 447
 448         *fw_stats_ctx_id = INVALID_STATS_CTX_ID;
 449
 450         if (!en_dev)
 451                 return rc;
 452
 453         memset(&fw_msg, 0, sizeof(fw_msg));
 454
 455         bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_ALLOC, -1, -1);
 456         req.update_period_ms = cpu_to_le32(1000);
 457         req.stats_dma_addr = cpu_to_le64(dma_map);
 458         req.stats_dma_length = cpu_to_le16(chip_ctx->hw_stats_size);
 459         req.stat_ctx_flags = STAT_CTX_ALLOC_REQ_STAT_CTX_FLAGS_ROCE;
 460         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
 461                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
 462         rc = bnxt_send_msg(en_dev, &fw_msg);
 463         if (!rc)
 464                 *fw_stats_ctx_id = le32_to_cpu(resp.stat_ctx_id);
 465
 466         return rc;
 467 }
 468
 469 /* Device */
 470
 471 static struct bnxt_re_dev *bnxt_re_from_netdev(struct net_device *netdev)
 472 {
 473         struct ib_device *ibdev =
 474                 ib_device_get_by_netdev(netdev, RDMA_DRIVER_BNXT_RE);
 475         if (!ibdev)
 476                 return NULL;
 477
 478         return container_of(ibdev, struct bnxt_re_dev, ibdev);
 479 }
 480
 481 static ssize_t hw_rev_show(struct device *device, struct device_attribute *attr,
 482                            char *buf)
 483 {
 484         struct bnxt_re_dev *rdev =
 485                 rdma_device_to_drv_device(device, struct bnxt_re_dev, ibdev);
 486
 487         return sysfs_emit(buf, "0x%x\n", rdev->en_dev->pdev->vendor);
 488 }
 489 static DEVICE_ATTR_RO(hw_rev);
 490
 491 static ssize_t hca_type_show(struct device *device,
 492                              struct device_attribute *attr, char *buf)
 493 {
 494         struct bnxt_re_dev *rdev =
 495                 rdma_device_to_drv_device(device, struct bnxt_re_dev, ibdev);
 496
 497         return sysfs_emit(buf, "%s\n", rdev->ibdev.node_desc);
 498 }
 499 static DEVICE_ATTR_RO(hca_type);
 500
 501 static struct attribute *bnxt_re_attributes[] = {
 502         &dev_attr_hw_rev.attr,
 503         &dev_attr_hca_type.attr,
 504         NULL
 505 };
 506
 507 static const struct attribute_group bnxt_re_dev_attr_group = {
 508         .attrs = bnxt_re_attributes,
 509 };
 510
 511 static const struct ib_device_ops bnxt_re_dev_ops = {
 512         .owner = THIS_MODULE,
 513         .driver_id = RDMA_DRIVER_BNXT_RE,
 514         .uverbs_abi_ver = BNXT_RE_ABI_VERSION,
 515
 516         .add_gid = bnxt_re_add_gid,
 517         .alloc_hw_port_stats = bnxt_re_ib_alloc_hw_port_stats,
 518         .alloc_mr = bnxt_re_alloc_mr,
 519         .alloc_pd = bnxt_re_alloc_pd,
 520         .alloc_ucontext = bnxt_re_alloc_ucontext,
 521         .create_ah = bnxt_re_create_ah,
 522         .create_cq = bnxt_re_create_cq,
 523         .create_qp = bnxt_re_create_qp,
 524         .create_srq = bnxt_re_create_srq,
 525         .create_user_ah = bnxt_re_create_ah,
 526         .dealloc_pd = bnxt_re_dealloc_pd,
 527         .dealloc_ucontext = bnxt_re_dealloc_ucontext,
 528         .del_gid = bnxt_re_del_gid,
 529         .dereg_mr = bnxt_re_dereg_mr,
 530         .destroy_ah = bnxt_re_destroy_ah,
 531         .destroy_cq = bnxt_re_destroy_cq,
 532         .destroy_qp = bnxt_re_destroy_qp,
 533         .destroy_srq = bnxt_re_destroy_srq,
 534         .device_group = &bnxt_re_dev_attr_group,
 535         .get_dev_fw_str = bnxt_re_query_fw_str,
 536         .get_dma_mr = bnxt_re_get_dma_mr,
 537         .get_hw_stats = bnxt_re_ib_get_hw_stats,
 538         .get_link_layer = bnxt_re_get_link_layer,
 539         .get_port_immutable = bnxt_re_get_port_immutable,
 540         .map_mr_sg = bnxt_re_map_mr_sg,
 541         .mmap = bnxt_re_mmap,
 542         .modify_qp = bnxt_re_modify_qp,
 543         .modify_srq = bnxt_re_modify_srq,
 544         .poll_cq = bnxt_re_poll_cq,
 545         .post_recv = bnxt_re_post_recv,
 546         .post_send = bnxt_re_post_send,
 547         .post_srq_recv = bnxt_re_post_srq_recv,
 548         .query_ah = bnxt_re_query_ah,
 549         .query_device = bnxt_re_query_device,
 550         .query_pkey = bnxt_re_query_pkey,
 551         .query_port = bnxt_re_query_port,
 552         .query_qp = bnxt_re_query_qp,
 553         .query_srq = bnxt_re_query_srq,
 554         .reg_user_mr = bnxt_re_reg_user_mr,
 555         .req_notify_cq = bnxt_re_req_notify_cq,
 556         .resize_cq = bnxt_re_resize_cq,
 557         INIT_RDMA_OBJ_SIZE(ib_ah, bnxt_re_ah, ib_ah),
 558         INIT_RDMA_OBJ_SIZE(ib_cq, bnxt_re_cq, ib_cq),
 559         INIT_RDMA_OBJ_SIZE(ib_pd, bnxt_re_pd, ib_pd),
 560         INIT_RDMA_OBJ_SIZE(ib_qp, bnxt_re_qp, ib_qp),
 561         INIT_RDMA_OBJ_SIZE(ib_srq, bnxt_re_srq, ib_srq),
 562         INIT_RDMA_OBJ_SIZE(ib_ucontext, bnxt_re_ucontext, ib_uctx),
 563 };
 564
 565 static int bnxt_re_register_ib(struct bnxt_re_dev *rdev)
 566 {
 567         struct ib_device *ibdev = &rdev->ibdev;
 568         int ret;
 569
 570         /* ib device init */
 571         ibdev->node_type = RDMA_NODE_IB_CA;
 572         strscpy(ibdev->node_desc, BNXT_RE_DESC " HCA",
 573                 strlen(BNXT_RE_DESC) + 5);
 574         ibdev->phys_port_cnt = 1;
 575
 576         addrconf_addr_eui48((u8 *)&ibdev->node_guid, rdev->netdev->dev_addr);
 577
 578         ibdev->num_comp_vectors = rdev->num_msix - 1;
 579         ibdev->dev.parent = &rdev->en_dev->pdev->dev;
 580         ibdev->local_dma_lkey = BNXT_QPLIB_RSVD_LKEY;
 581
 582         ib_set_device_ops(ibdev, &bnxt_re_dev_ops);
 583         ret = ib_device_set_netdev(&rdev->ibdev, rdev->netdev, 1);
 584         if (ret)
 585                 return ret;
 586
 587         dma_set_max_seg_size(&rdev->en_dev->pdev->dev, UINT_MAX);
 588         ibdev->uverbs_cmd_mask |= BIT_ULL(IB_USER_VERBS_CMD_POLL_CQ);
 589         return ib_register_device(ibdev, "bnxt_re%d", &rdev->en_dev->pdev->dev);
 590 }
 591
 592 static struct bnxt_re_dev *bnxt_re_dev_add(struct bnxt_aux_priv *aux_priv,
 593                                            struct bnxt_en_dev *en_dev)
 594 {
 595         struct bnxt_re_dev *rdev;
 596
 597         /* Allocate bnxt_re_dev instance here */
 598         rdev = ib_alloc_device(bnxt_re_dev, ibdev);
 599         if (!rdev) {
 600                 ibdev_err(NULL, "%s: bnxt_re_dev allocation failure!",
 601                           ROCE_DRV_MODULE_NAME);
 602                 return NULL;
 603         }
 604         /* Default values */
 605         rdev->nb.notifier_call = NULL;
 606         rdev->netdev = en_dev->net;
 607         rdev->en_dev = en_dev;
 608         rdev->id = rdev->en_dev->pdev->devfn;
 609         INIT_LIST_HEAD(&rdev->qp_list);
 610         mutex_init(&rdev->qp_lock);
 611         atomic_set(&rdev->qp_count, 0);
 612         atomic_set(&rdev->cq_count, 0);
 613         atomic_set(&rdev->srq_count, 0);
 614         atomic_set(&rdev->mr_count, 0);
 615         atomic_set(&rdev->mw_count, 0);
 616         atomic_set(&rdev->ah_count, 0);
 617         atomic_set(&rdev->pd_count, 0);
 618         rdev->cosq[0] = 0xFFFF;
 619         rdev->cosq[1] = 0xFFFF;
 620
 621         return rdev;
 622 }
 623
 624 static int bnxt_re_handle_unaffi_async_event(struct creq_func_event
 625                                              *unaffi_async)
 626 {
 627         switch (unaffi_async->event) {
 628         case CREQ_FUNC_EVENT_EVENT_TX_WQE_ERROR:
 629                 break;
 630         case CREQ_FUNC_EVENT_EVENT_TX_DATA_ERROR:
 631                 break;
 632         case CREQ_FUNC_EVENT_EVENT_RX_WQE_ERROR:
 633                 break;
 634         case CREQ_FUNC_EVENT_EVENT_RX_DATA_ERROR:
 635                 break;
 636         case CREQ_FUNC_EVENT_EVENT_CQ_ERROR:
 637                 break;
 638         case CREQ_FUNC_EVENT_EVENT_TQM_ERROR:
 639                 break;
 640         case CREQ_FUNC_EVENT_EVENT_CFCQ_ERROR:
 641                 break;
 642         case CREQ_FUNC_EVENT_EVENT_CFCS_ERROR:
 643                 break;
 644         case CREQ_FUNC_EVENT_EVENT_CFCC_ERROR:
 645                 break;
 646         case CREQ_FUNC_EVENT_EVENT_CFCM_ERROR:
 647                 break;
 648         case CREQ_FUNC_EVENT_EVENT_TIM_ERROR:
 649                 break;
 650         default:
 651                 return -EINVAL;
 652         }
 653         return 0;
 654 }
 655
 656 static int bnxt_re_handle_qp_async_event(struct creq_qp_event *qp_event,
 657                                          struct bnxt_re_qp *qp)
 658 {
 659         struct ib_event event;
 660         unsigned int flags;
 661
 662         if (qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_ERR &&
 663             rdma_is_kernel_res(&qp->ib_qp.res)) {
 664                 flags = bnxt_re_lock_cqs(qp);
 665                 bnxt_qplib_add_flush_qp(&qp->qplib_qp);
 666                 bnxt_re_unlock_cqs(qp, flags);
 667         }
 668
 669         memset(&event, 0, sizeof(event));
 670         if (qp->qplib_qp.srq) {
 671                 event.device = &qp->rdev->ibdev;
 672                 event.element.qp = &qp->ib_qp;
 673                 event.event = IB_EVENT_QP_LAST_WQE_REACHED;
 674         }
 675
 676         if (event.device && qp->ib_qp.event_handler)
 677                 qp->ib_qp.event_handler(&event, qp->ib_qp.qp_context);
 678
 679         return 0;
 680 }
 681
 682 static int bnxt_re_handle_affi_async_event(struct creq_qp_event *affi_async,
 683                                            void *obj)
 684 {
 685         int rc = 0;
 686         u8 event;
 687
 688         if (!obj)
 689                 return rc; /* QP was already dead, still return success */
 690
 691         event = affi_async->event;
 692         if (event == CREQ_QP_EVENT_EVENT_QP_ERROR_NOTIFICATION) {
 693                 struct bnxt_qplib_qp *lib_qp = obj;
 694                 struct bnxt_re_qp *qp = container_of(lib_qp, struct bnxt_re_qp,
 695                                                      qplib_qp);
 696                 rc = bnxt_re_handle_qp_async_event(affi_async, qp);
 697         }
 698         return rc;
 699 }
 700
 701 static int bnxt_re_aeq_handler(struct bnxt_qplib_rcfw *rcfw,
 702                                void *aeqe, void *obj)
 703 {
 704         struct creq_qp_event *affi_async;
 705         struct creq_func_event *unaffi_async;
 706         u8 type;
 707         int rc;
 708
 709         type = ((struct creq_base *)aeqe)->type;
 710         if (type == CREQ_BASE_TYPE_FUNC_EVENT) {
 711                 unaffi_async = aeqe;
 712                 rc = bnxt_re_handle_unaffi_async_event(unaffi_async);
 713         } else {
 714                 affi_async = aeqe;
 715                 rc = bnxt_re_handle_affi_async_event(affi_async, obj);
 716         }
 717
 718         return rc;
 719 }
 720
 721 static int bnxt_re_srqn_handler(struct bnxt_qplib_nq *nq,
 722                                 struct bnxt_qplib_srq *handle, u8 event)
 723 {
 724         struct bnxt_re_srq *srq = container_of(handle, struct bnxt_re_srq,
 725                                                qplib_srq);
 726         struct ib_event ib_event;
 727
 728         ib_event.device = &srq->rdev->ibdev;
 729         ib_event.element.srq = &srq->ib_srq;
 730         if (event == NQ_SRQ_EVENT_EVENT_SRQ_THRESHOLD_EVENT)
 731                 ib_event.event = IB_EVENT_SRQ_LIMIT_REACHED;
 732         else
 733                 ib_event.event = IB_EVENT_SRQ_ERR;
 734
 735         if (srq->ib_srq.event_handler) {
 736                 /* Lock event_handler? */
 737                 (*srq->ib_srq.event_handler)(&ib_event,
 738                                              srq->ib_srq.srq_context);
 739         }
 740         return 0;
 741 }
 742
 743 static int bnxt_re_cqn_handler(struct bnxt_qplib_nq *nq,
 744                                struct bnxt_qplib_cq *handle)
 745 {
 746         struct bnxt_re_cq *cq = container_of(handle, struct bnxt_re_cq,
 747                                              qplib_cq);
 748
 749         if (cq->ib_cq.comp_handler) {
 750                 /* Lock comp_handler? */
 751                 (*cq->ib_cq.comp_handler)(&cq->ib_cq, cq->ib_cq.cq_context);
 752         }
 753
 754         return 0;
 755 }
 756
 757 #define BNXT_RE_GEN_P5_PF_NQ_DB         0x10000
 758 #define BNXT_RE_GEN_P5_VF_NQ_DB         0x4000
 759 static u32 bnxt_re_get_nqdb_offset(struct bnxt_re_dev *rdev, u16 indx)
 760 {
 761         return bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx) ?
 762                 (rdev->is_virtfn ? BNXT_RE_GEN_P5_VF_NQ_DB :
 763                                    BNXT_RE_GEN_P5_PF_NQ_DB) :
 764                                    rdev->en_dev->msix_entries[indx].db_offset;
 765 }
 766
 767 static void bnxt_re_cleanup_res(struct bnxt_re_dev *rdev)
 768 {
 769         int i;
 770
 771         for (i = 1; i < rdev->num_msix; i++)
 772                 bnxt_qplib_disable_nq(&rdev->nq[i - 1]);
 773
 774         if (rdev->qplib_res.rcfw)
 775                 bnxt_qplib_cleanup_res(&rdev->qplib_res);
 776 }
 777
 778 static int bnxt_re_init_res(struct bnxt_re_dev *rdev)
 779 {
 780         int num_vec_enabled = 0;
 781         int rc = 0, i;
 782         u32 db_offt;
 783
 784         bnxt_qplib_init_res(&rdev->qplib_res);
 785
 786         for (i = 1; i < rdev->num_msix ; i++) {
 787                 db_offt = bnxt_re_get_nqdb_offset(rdev, i);
 788                 rc = bnxt_qplib_enable_nq(rdev->en_dev->pdev, &rdev->nq[i - 1],
 789                                           i - 1, rdev->en_dev->msix_entries[i].vector,
 790                                           db_offt, &bnxt_re_cqn_handler,
 791                                           &bnxt_re_srqn_handler);
 792                 if (rc) {
 793                         ibdev_err(&rdev->ibdev,
 794                                   "Failed to enable NQ with rc = 0x%x", rc);
 795                         goto fail;
 796                 }
 797                 num_vec_enabled++;
 798         }
 799         return 0;
 800 fail:
 801         for (i = num_vec_enabled; i >= 0; i--)
 802                 bnxt_qplib_disable_nq(&rdev->nq[i]);
 803         return rc;
 804 }
 805
 806 static void bnxt_re_free_nq_res(struct bnxt_re_dev *rdev)
 807 {
 808         u8 type;
 809         int i;
 810
 811         for (i = 0; i < rdev->num_msix - 1; i++) {
 812                 type = bnxt_qplib_get_ring_type(rdev->chip_ctx);
 813                 bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id, type);
 814                 bnxt_qplib_free_nq(&rdev->nq[i]);
 815                 rdev->nq[i].res = NULL;
 816         }
 817 }
 818
 819 static void bnxt_re_free_res(struct bnxt_re_dev *rdev)
 820 {
 821         bnxt_re_free_nq_res(rdev);
 822
 823         if (rdev->qplib_res.dpi_tbl.max) {
 824                 bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
 825                                        &rdev->qplib_res.dpi_tbl,
 826                                        &rdev->dpi_privileged);
 827         }
 828         if (rdev->qplib_res.rcfw) {
 829                 bnxt_qplib_free_res(&rdev->qplib_res);
 830                 rdev->qplib_res.rcfw = NULL;
 831         }
 832 }
 833
 834 static int bnxt_re_alloc_res(struct bnxt_re_dev *rdev)
 835 {
 836         struct bnxt_re_ring_attr rattr = {};
 837         int num_vec_created = 0;
 838         int rc = 0, i;
 839         u8 type;
 840
 841         /* Configure and allocate resources for qplib */
 842         rdev->qplib_res.rcfw = &rdev->rcfw;
 843         rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr,
 844                                      rdev->is_virtfn);
 845         if (rc)
 846                 goto fail;
 847
 848         rc = bnxt_qplib_alloc_res(&rdev->qplib_res, rdev->en_dev->pdev,
 849                                   rdev->netdev, &rdev->dev_attr);
 850         if (rc)
 851                 goto fail;
 852
 853         rc = bnxt_qplib_alloc_dpi(&rdev->qplib_res.dpi_tbl,
 854                                   &rdev->dpi_privileged,
 855                                   rdev);
 856         if (rc)
 857                 goto dealloc_res;
 858
 859         for (i = 0; i < rdev->num_msix - 1; i++) {
 860                 struct bnxt_qplib_nq *nq;
 861
 862                 nq = &rdev->nq[i];
 863                 nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;
 864                 rc = bnxt_qplib_alloc_nq(&rdev->qplib_res, &rdev->nq[i]);
 865                 if (rc) {
 866                         ibdev_err(&rdev->ibdev, "Alloc Failed NQ%d rc:%#x",
 867                                   i, rc);
 868                         goto free_nq;
 869                 }
 870                 type = bnxt_qplib_get_ring_type(rdev->chip_ctx);
 871                 rattr.dma_arr = nq->hwq.pbl[PBL_LVL_0].pg_map_arr;
 872                 rattr.pages = nq->hwq.pbl[rdev->nq[i].hwq.level].pg_count;
 873                 rattr.type = type;
 874                 rattr.mode = RING_ALLOC_REQ_INT_MODE_MSIX;
 875                 rattr.depth = BNXT_QPLIB_NQE_MAX_CNT - 1;
 876                 rattr.lrid = rdev->en_dev->msix_entries[i + 1].ring_idx;
 877                 rc = bnxt_re_net_ring_alloc(rdev, &rattr, &nq->ring_id);
 878                 if (rc) {
 879                         ibdev_err(&rdev->ibdev,
 880                                   "Failed to allocate NQ fw id with rc = 0x%x",
 881                                   rc);
 882                         bnxt_qplib_free_nq(&rdev->nq[i]);
 883                         goto free_nq;
 884                 }
 885                 num_vec_created++;
 886         }
 887         return 0;
 888 free_nq:
 889         for (i = num_vec_created - 1; i >= 0; i--) {
 890                 type = bnxt_qplib_get_ring_type(rdev->chip_ctx);
 891                 bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id, type);
 892                 bnxt_qplib_free_nq(&rdev->nq[i]);
 893         }
 894         bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
 895                                &rdev->qplib_res.dpi_tbl,
 896                                &rdev->dpi_privileged);
 897 dealloc_res:
 898         bnxt_qplib_free_res(&rdev->qplib_res);
 899
 900 fail:
 901         rdev->qplib_res.rcfw = NULL;
 902         return rc;
 903 }
 904
 905 static void bnxt_re_dispatch_event(struct ib_device *ibdev, struct ib_qp *qp,
 906                                    u8 port_num, enum ib_event_type event)
 907 {
 908         struct ib_event ib_event;
 909
 910         ib_event.device = ibdev;
 911         if (qp) {
 912                 ib_event.element.qp = qp;
 913                 ib_event.event = event;
 914                 if (qp->event_handler)
 915                         qp->event_handler(&ib_event, qp->qp_context);
 916
 917         } else {
 918                 ib_event.element.port_num = port_num;
 919                 ib_event.event = event;
 920                 ib_dispatch_event(&ib_event);
 921         }
 922 }
 923
 924 static bool bnxt_re_is_qp1_or_shadow_qp(struct bnxt_re_dev *rdev,
 925                                         struct bnxt_re_qp *qp)
 926 {
 927         return (qp->ib_qp.qp_type == IB_QPT_GSI) ||
 928                (qp == rdev->gsi_ctx.gsi_sqp);
 929 }
 930
 931 static void bnxt_re_dev_stop(struct bnxt_re_dev *rdev)
 932 {
 933         int mask = IB_QP_STATE;
 934         struct ib_qp_attr qp_attr;
 935         struct bnxt_re_qp *qp;
 936
 937         qp_attr.qp_state = IB_QPS_ERR;
 938         mutex_lock(&rdev->qp_lock);
 939         list_for_each_entry(qp, &rdev->qp_list, list) {
 940                 /* Modify the state of all QPs except QP1/Shadow QP */
 941                 if (!bnxt_re_is_qp1_or_shadow_qp(rdev, qp)) {
 942                         if (qp->qplib_qp.state !=
 943                             CMDQ_MODIFY_QP_NEW_STATE_RESET &&
 944                             qp->qplib_qp.state !=
 945                             CMDQ_MODIFY_QP_NEW_STATE_ERR) {
 946                                 bnxt_re_dispatch_event(&rdev->ibdev, &qp->ib_qp,
 947                                                        1, IB_EVENT_QP_FATAL);
 948                                 bnxt_re_modify_qp(&qp->ib_qp, &qp_attr, mask,
 949                                                   NULL);
 950                         }
 951                 }
 952         }
 953         mutex_unlock(&rdev->qp_lock);
 954 }
 955
 956 static int bnxt_re_update_gid(struct bnxt_re_dev *rdev)
 957 {
 958         struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl;
 959         struct bnxt_qplib_gid gid;
 960         u16 gid_idx, index;
 961         int rc = 0;
 962
 963         if (!ib_device_try_get(&rdev->ibdev))
 964                 return 0;
 965
 966         if (!sgid_tbl) {
 967                 ibdev_err(&rdev->ibdev, "QPLIB: SGID table not allocated");
 968                 rc = -EINVAL;
 969                 goto out;
 970         }
 971
 972         for (index = 0; index < sgid_tbl->active; index++) {
 973                 gid_idx = sgid_tbl->hw_id[index];
 974
 975                 if (!memcmp(&sgid_tbl->tbl[index], &bnxt_qplib_gid_zero,
 976                             sizeof(bnxt_qplib_gid_zero)))
 977                         continue;
 978                 /* need to modify the VLAN enable setting of non VLAN GID only
 979                  * as setting is done for VLAN GID while adding GID
 980                  */
 981                 if (sgid_tbl->vlan[index])
 982                         continue;
 983
 984                 memcpy(&gid, &sgid_tbl->tbl[index], sizeof(gid));
 985
 986                 rc = bnxt_qplib_update_sgid(sgid_tbl, &gid, gid_idx,
 987                                             rdev->qplib_res.netdev->dev_addr);
 988         }
 989 out:
 990         ib_device_put(&rdev->ibdev);
 991         return rc;
 992 }
 993
 994 static u32 bnxt_re_get_priority_mask(struct bnxt_re_dev *rdev)
 995 {
 996         u32 prio_map = 0, tmp_map = 0;
 997         struct net_device *netdev;
 998         struct dcb_app app;
 999
1000         netdev = rdev->netdev;
1001
1002         memset(&app, 0, sizeof(app));
1003         app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
1004         app.protocol = ETH_P_IBOE;
1005         tmp_map = dcb_ieee_getapp_mask(netdev, &app);
1006         prio_map = tmp_map;
1007
1008         app.selector = IEEE_8021QAZ_APP_SEL_DGRAM;
1009         app.protocol = ROCE_V2_UDP_DPORT;
1010         tmp_map = dcb_ieee_getapp_mask(netdev, &app);
1011         prio_map |= tmp_map;
1012
1013         return prio_map;
1014 }
1015
1016 static int bnxt_re_setup_qos(struct bnxt_re_dev *rdev)
1017 {
1018         u8 prio_map = 0;
1019
1020         /* Get priority for roce */
1021         prio_map = bnxt_re_get_priority_mask(rdev);
1022
1023         if (prio_map == rdev->cur_prio_map)
1024                 return 0;
1025         rdev->cur_prio_map = prio_map;
1026         /* Actual priorities are not programmed as they are already
1027          * done by L2 driver; just enable or disable priority vlan tagging
1028          */
1029         if ((prio_map == 0 && rdev->qplib_res.prio) ||
1030             (prio_map != 0 && !rdev->qplib_res.prio)) {
1031                 rdev->qplib_res.prio = prio_map ? true : false;
1032
1033                 bnxt_re_update_gid(rdev);
1034         }
1035
1036         return 0;
1037 }
1038
1039 static void bnxt_re_query_hwrm_intf_version(struct bnxt_re_dev *rdev)
1040 {
1041         struct bnxt_en_dev *en_dev = rdev->en_dev;
1042         struct hwrm_ver_get_output resp = {0};
1043         struct hwrm_ver_get_input req = {0};
1044         struct bnxt_fw_msg fw_msg;
1045         int rc = 0;
1046
1047         memset(&fw_msg, 0, sizeof(fw_msg));
1048         bnxt_re_init_hwrm_hdr(rdev, (void *)&req,
1049                               HWRM_VER_GET, -1, -1);
1050         req.hwrm_intf_maj = HWRM_VERSION_MAJOR;
1051         req.hwrm_intf_min = HWRM_VERSION_MINOR;
1052         req.hwrm_intf_upd = HWRM_VERSION_UPDATE;
1053         bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
1054                             sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
1055         rc = bnxt_send_msg(en_dev, &fw_msg);
1056         if (rc) {
1057                 ibdev_err(&rdev->ibdev, "Failed to query HW version, rc = 0x%x",
1058                           rc);
1059                 return;
1060         }
1061         rdev->qplib_ctx.hwrm_intf_ver =
1062                 (u64)le16_to_cpu(resp.hwrm_intf_major) << 48 |
1063                 (u64)le16_to_cpu(resp.hwrm_intf_minor) << 32 |
1064                 (u64)le16_to_cpu(resp.hwrm_intf_build) << 16 |
1065                 le16_to_cpu(resp.hwrm_intf_patch);
1066 }
1067
1068 static int bnxt_re_ib_init(struct bnxt_re_dev *rdev)
1069 {
1070         int rc = 0;
1071         u32 event;
1072
1073         /* Register ib dev */
1074         rc = bnxt_re_register_ib(rdev);
1075         if (rc) {
1076                 pr_err("Failed to register with IB: %#x\n", rc);
1077                 return rc;
1078         }
1079         dev_info(rdev_to_dev(rdev), "Device registered with IB successfully");
1080         ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed,
1081                          &rdev->active_width);
1082         set_bit(BNXT_RE_FLAG_ISSUE_ROCE_STATS, &rdev->flags);
1083
1084         event = netif_running(rdev->netdev) && netif_carrier_ok(rdev->netdev) ?
1085                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
1086
1087         bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, event);
1088
1089         return rc;
1090 }
1091
1092 static void bnxt_re_dev_uninit(struct bnxt_re_dev *rdev)
1093 {
1094         u8 type;
1095         int rc;
1096
1097         if (test_and_clear_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags))
1098                 cancel_delayed_work_sync(&rdev->worker);
1099
1100         if (test_and_clear_bit(BNXT_RE_FLAG_RESOURCES_INITIALIZED,
1101                                &rdev->flags))
1102                 bnxt_re_cleanup_res(rdev);
1103         if (test_and_clear_bit(BNXT_RE_FLAG_RESOURCES_ALLOCATED, &rdev->flags))
1104                 bnxt_re_free_res(rdev);
1105
1106         if (test_and_clear_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags)) {
1107                 rc = bnxt_qplib_deinit_rcfw(&rdev->rcfw);
1108                 if (rc)
1109                         ibdev_warn(&rdev->ibdev,
1110                                    "Failed to deinitialize RCFW: %#x", rc);
1111                 bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id);
1112                 bnxt_qplib_free_ctx(&rdev->qplib_res, &rdev->qplib_ctx);
1113                 bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
1114                 type = bnxt_qplib_get_ring_type(rdev->chip_ctx);
1115                 bnxt_re_net_ring_free(rdev, rdev->rcfw.creq.ring_id, type);
1116                 bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
1117         }
1118         if (test_and_clear_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags))
1119                 rdev->num_msix = 0;
1120
1121         bnxt_re_destroy_chip_ctx(rdev);
1122         if (test_and_clear_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags))
1123                 bnxt_unregister_dev(rdev->en_dev);
1124 }
1125
1126 /* worker thread for polling periodic events. Now used for QoS programming*/
1127 static void bnxt_re_worker(struct work_struct *work)
1128 {
1129         struct bnxt_re_dev *rdev = container_of(work, struct bnxt_re_dev,
1130                                                 worker.work);
1131
1132         bnxt_re_setup_qos(rdev);
1133         schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
1134 }
1135
1136 static int bnxt_re_dev_init(struct bnxt_re_dev *rdev, u8 wqe_mode)
1137 {
1138         struct bnxt_qplib_creq_ctx *creq;
1139         struct bnxt_re_ring_attr rattr;
1140         u32 db_offt;
1141         int vid;
1142         u8 type;
1143         int rc;
1144
1145         /* Registered a new RoCE device instance to netdev */
1146         memset(&rattr, 0, sizeof(rattr));
1147         rc = bnxt_re_register_netdev(rdev);
1148         if (rc) {
1149                 ibdev_err(&rdev->ibdev,
1150                           "Failed to register with netedev: %#x\n", rc);
1151                 return -EINVAL;
1152         }
1153         set_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags);
1154
1155         rc = bnxt_re_setup_chip_ctx(rdev, wqe_mode);
1156         if (rc) {
1157                 ibdev_err(&rdev->ibdev, "Failed to get chip context\n");
1158                 return -EINVAL;
1159         }
1160
1161         /* Check whether VF or PF */
1162         bnxt_re_get_sriov_func_type(rdev);
1163
1164         if (!rdev->en_dev->ulp_tbl->msix_requested) {
1165                 ibdev_err(&rdev->ibdev,
1166                           "Failed to get MSI-X vectors: %#x\n", rc);
1167                 rc = -EINVAL;
1168                 goto fail;
1169         }
1170         ibdev_dbg(&rdev->ibdev, "Got %d MSI-X vectors\n",
1171                   rdev->en_dev->ulp_tbl->msix_requested);
1172         rdev->num_msix = rdev->en_dev->ulp_tbl->msix_requested;
1173         set_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags);
1174
1175         bnxt_re_query_hwrm_intf_version(rdev);
1176
1177         /* Establish RCFW Communication Channel to initialize the context
1178          * memory for the function and all child VFs
1179          */
1180         rc = bnxt_qplib_alloc_rcfw_channel(&rdev->qplib_res, &rdev->rcfw,
1181                                            &rdev->qplib_ctx,
1182                                            BNXT_RE_MAX_QPC_COUNT);
1183         if (rc) {
1184                 ibdev_err(&rdev->ibdev,
1185                           "Failed to allocate RCFW Channel: %#x\n", rc);
1186                 goto fail;
1187         }
1188
1189         type = bnxt_qplib_get_ring_type(rdev->chip_ctx);
1190         creq = &rdev->rcfw.creq;
1191         rattr.dma_arr = creq->hwq.pbl[PBL_LVL_0].pg_map_arr;
1192         rattr.pages = creq->hwq.pbl[creq->hwq.level].pg_count;
1193         rattr.type = type;
1194         rattr.mode = RING_ALLOC_REQ_INT_MODE_MSIX;
1195         rattr.depth = BNXT_QPLIB_CREQE_MAX_CNT - 1;
1196         rattr.lrid = rdev->en_dev->msix_entries[BNXT_RE_AEQ_IDX].ring_idx;
1197         rc = bnxt_re_net_ring_alloc(rdev, &rattr, &creq->ring_id);
1198         if (rc) {
1199                 ibdev_err(&rdev->ibdev, "Failed to allocate CREQ: %#x\n", rc);
1200                 goto free_rcfw;
1201         }
1202         db_offt = bnxt_re_get_nqdb_offset(rdev, BNXT_RE_AEQ_IDX);
1203         vid = rdev->en_dev->msix_entries[BNXT_RE_AEQ_IDX].vector;
1204         rc = bnxt_qplib_enable_rcfw_channel(&rdev->rcfw,
1205                                             vid, db_offt, rdev->is_virtfn,
1206                                             &bnxt_re_aeq_handler);
1207         if (rc) {
1208                 ibdev_err(&rdev->ibdev, "Failed to enable RCFW channel: %#x\n",
1209                           rc);
1210                 goto free_ring;
1211         }
1212
1213         rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr,
1214                                      rdev->is_virtfn);
1215         if (rc)
1216                 goto disable_rcfw;
1217
1218         bnxt_re_set_resource_limits(rdev);
1219
1220         rc = bnxt_qplib_alloc_ctx(&rdev->qplib_res, &rdev->qplib_ctx, 0,
1221                                   bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx));
1222         if (rc) {
1223                 ibdev_err(&rdev->ibdev,
1224                           "Failed to allocate QPLIB context: %#x\n", rc);
1225                 goto disable_rcfw;
1226         }
1227         rc = bnxt_re_net_stats_ctx_alloc(rdev,
1228                                          rdev->qplib_ctx.stats.dma_map,
1229                                          &rdev->qplib_ctx.stats.fw_id);
1230         if (rc) {
1231                 ibdev_err(&rdev->ibdev,
1232                           "Failed to allocate stats context: %#x\n", rc);
1233                 goto free_ctx;
1234         }
1235
1236         rc = bnxt_qplib_init_rcfw(&rdev->rcfw, &rdev->qplib_ctx,
1237                                   rdev->is_virtfn);
1238         if (rc) {
1239                 ibdev_err(&rdev->ibdev,
1240                           "Failed to initialize RCFW: %#x\n", rc);
1241                 goto free_sctx;
1242         }
1243         set_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags);
1244
1245         /* Resources based on the 'new' device caps */
1246         rc = bnxt_re_alloc_res(rdev);
1247         if (rc) {
1248                 ibdev_err(&rdev->ibdev,
1249                           "Failed to allocate resources: %#x\n", rc);
1250                 goto fail;
1251         }
1252         set_bit(BNXT_RE_FLAG_RESOURCES_ALLOCATED, &rdev->flags);
1253         rc = bnxt_re_init_res(rdev);
1254         if (rc) {
1255                 ibdev_err(&rdev->ibdev,
1256                           "Failed to initialize resources: %#x\n", rc);
1257                 goto fail;
1258         }
1259
1260         set_bit(BNXT_RE_FLAG_RESOURCES_INITIALIZED, &rdev->flags);
1261
1262         if (!rdev->is_virtfn) {
1263                 rc = bnxt_re_setup_qos(rdev);
1264                 if (rc)
1265                         ibdev_info(&rdev->ibdev,
1266                                    "RoCE priority not yet configured\n");
1267
1268                 INIT_DELAYED_WORK(&rdev->worker, bnxt_re_worker);
1269                 set_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags);
1270                 schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
1271                 /*
1272                  * Use the total VF count since the actual VF count may not be
1273                  * available at this point.
1274                  */
1275                 bnxt_re_vf_res_config(rdev);
1276         }
1277
1278         return 0;
1279 free_sctx:
1280         bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id);
1281 free_ctx:
1282         bnxt_qplib_free_ctx(&rdev->qplib_res, &rdev->qplib_ctx);
1283 disable_rcfw:
1284         bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
1285 free_ring:
1286         type = bnxt_qplib_get_ring_type(rdev->chip_ctx);
1287         bnxt_re_net_ring_free(rdev, rdev->rcfw.creq.ring_id, type);
1288 free_rcfw:
1289         bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
1290 fail:
1291         bnxt_re_dev_uninit(rdev);
1292
1293         return rc;
1294 }
1295
1296 static int bnxt_re_add_device(struct auxiliary_device *adev, u8 wqe_mode)
1297 {
1298         struct bnxt_aux_priv *aux_priv =
1299                 container_of(adev, struct bnxt_aux_priv, aux_dev);
1300         struct bnxt_en_dev *en_dev;
1301         struct bnxt_re_dev *rdev;
1302         int rc = 0;
1303
1304         /* en_dev should never be NULL as long as adev and aux_dev are valid. */
1305         en_dev = aux_priv->edev;
1306
1307         rdev = bnxt_re_dev_add(aux_priv, en_dev);
1308         if (!rdev || !rdev_to_dev(rdev)) {
1309                 rc = -ENOMEM;
1310                 goto exit;
1311         }
1312
1313         rc = bnxt_re_dev_init(rdev, wqe_mode);
1314         if (rc)
1315                 goto re_dev_dealloc;
1316
1317         rc = bnxt_re_ib_init(rdev);
1318         if (rc) {
1319                 pr_err("Failed to register with IB: %s",
1320                         aux_priv->aux_dev.name);
1321                 goto re_dev_uninit;
1322         }
1323         auxiliary_set_drvdata(adev, rdev);
1324
1325         return 0;
1326
1327 re_dev_uninit:
1328         bnxt_re_dev_uninit(rdev);
1329 re_dev_dealloc:
1330         ib_dealloc_device(&rdev->ibdev);
1331 exit:
1332         return rc;
1333 }
1334
1335 static void bnxt_re_setup_cc(struct bnxt_re_dev *rdev, bool enable)
1336 {
1337         struct bnxt_qplib_cc_param cc_param = {};
1338
1339         /* Do not enable congestion control on VFs */
1340         if (rdev->is_virtfn)
1341                 return;
1342
1343         /* Currently enabling only for GenP5 adapters */
1344         if (!bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx))
1345                 return;
1346
1347         if (enable) {
1348                 cc_param.enable  = 1;
1349                 cc_param.cc_mode = CMDQ_MODIFY_ROCE_CC_CC_MODE_PROBABILISTIC_CC_MODE;
1350         }
1351
1352         cc_param.mask = (CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_CC_MODE |
1353                          CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_ENABLE_CC |
1354                          CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TOS_ECN);
1355
1356         if (bnxt_qplib_modify_cc(&rdev->qplib_res, &cc_param))
1357                 ibdev_err(&rdev->ibdev, "Failed to setup CC enable = %d\n", enable);
1358 }
1359
1360 /*
1361  * "Notifier chain callback can be invoked for the same chain from
1362  * different CPUs at the same time".
1363  *
1364  * For cases when the netdev is already present, our call to the
1365  * register_netdevice_notifier() will actually get the rtnl_lock()
1366  * before sending NETDEV_REGISTER and (if up) NETDEV_UP
1367  * events.
1368  *
1369  * But for cases when the netdev is not already present, the notifier
1370  * chain is subjected to be invoked from different CPUs simultaneously.
1371  *
1372  * This is protected by the netdev_mutex.
1373  */
1374 static int bnxt_re_netdev_event(struct notifier_block *notifier,
1375                                 unsigned long event, void *ptr)
1376 {
1377         struct net_device *real_dev, *netdev = netdev_notifier_info_to_dev(ptr);
1378         struct bnxt_re_dev *rdev;
1379
1380         real_dev = rdma_vlan_dev_real_dev(netdev);
1381         if (!real_dev)
1382                 real_dev = netdev;
1383
1384         if (real_dev != netdev)
1385                 goto exit;
1386
1387         rdev = bnxt_re_from_netdev(real_dev);
1388         if (!rdev)
1389                 return NOTIFY_DONE;
1390
1391
1392         switch (event) {
1393         case NETDEV_UP:
1394         case NETDEV_DOWN:
1395         case NETDEV_CHANGE:
1396                 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
1397                                         netif_carrier_ok(real_dev) ?
1398                                         IB_EVENT_PORT_ACTIVE :
1399                                         IB_EVENT_PORT_ERR);
1400                 break;
1401         default:
1402                 break;
1403         }
1404         ib_device_put(&rdev->ibdev);
1405 exit:
1406         return NOTIFY_DONE;
1407 }
1408
1409 #define BNXT_ADEV_NAME "bnxt_en"
1410
1411 static void bnxt_re_remove(struct auxiliary_device *adev)
1412 {
1413         struct bnxt_re_dev *rdev = auxiliary_get_drvdata(adev);
1414
1415         if (!rdev)
1416                 return;
1417
1418         mutex_lock(&bnxt_re_mutex);
1419         if (rdev->nb.notifier_call) {
1420                 unregister_netdevice_notifier(&rdev->nb);
1421                 rdev->nb.notifier_call = NULL;
1422         } else {
1423                 /* If notifier is null, we should have already done a
1424                  * clean up before coming here.
1425                  */
1426                 goto skip_remove;
1427         }
1428         bnxt_re_setup_cc(rdev, false);
1429         ib_unregister_device(&rdev->ibdev);
1430         ib_dealloc_device(&rdev->ibdev);
1431         bnxt_re_dev_uninit(rdev);
1432 skip_remove:
1433         mutex_unlock(&bnxt_re_mutex);
1434 }
1435
1436 static int bnxt_re_probe(struct auxiliary_device *adev,
1437                          const struct auxiliary_device_id *id)
1438 {
1439         struct bnxt_re_dev *rdev;
1440         int rc;
1441
1442         mutex_lock(&bnxt_re_mutex);
1443         rc = bnxt_re_add_device(adev, BNXT_QPLIB_WQE_MODE_STATIC);
1444         if (rc) {
1445                 mutex_unlock(&bnxt_re_mutex);
1446                 return rc;
1447         }
1448
1449         rdev = auxiliary_get_drvdata(adev);
1450
1451         rdev->nb.notifier_call = bnxt_re_netdev_event;
1452         rc = register_netdevice_notifier(&rdev->nb);
1453         if (rc) {
1454                 rdev->nb.notifier_call = NULL;
1455                 pr_err("%s: Cannot register to netdevice_notifier",
1456                        ROCE_DRV_MODULE_NAME);
1457                 goto err;
1458         }
1459
1460         bnxt_re_setup_cc(rdev, true);
1461         mutex_unlock(&bnxt_re_mutex);
1462         return 0;
1463
1464 err:
1465         mutex_unlock(&bnxt_re_mutex);
1466         bnxt_re_remove(adev);
1467
1468         return rc;
1469 }
1470
1471 static int bnxt_re_suspend(struct auxiliary_device *adev, pm_message_t state)
1472 {
1473         struct bnxt_re_dev *rdev = auxiliary_get_drvdata(adev);
1474
1475         if (!rdev)
1476                 return 0;
1477
1478         mutex_lock(&bnxt_re_mutex);
1479         /* L2 driver may invoke this callback during device error/crash or device
1480          * reset. Current RoCE driver doesn't recover the device in case of
1481          * error. Handle the error by dispatching fatal events to all qps
1482          * ie. by calling bnxt_re_dev_stop and release the MSIx vectors as
1483          * L2 driver want to modify the MSIx table.
1484          */
1485
1486         ibdev_info(&rdev->ibdev, "Handle device suspend call");
1487         /* Check the current device state from bnxt_en_dev and move the
1488          * device to detached state if FW_FATAL_COND is set.
1489          * This prevents more commands to HW during clean-up,
1490          * in case the device is already in error.
1491          */
1492         if (test_bit(BNXT_STATE_FW_FATAL_COND, &rdev->en_dev->en_state))
1493                 set_bit(ERR_DEVICE_DETACHED, &rdev->rcfw.cmdq.flags);
1494
1495         bnxt_re_dev_stop(rdev);
1496         bnxt_re_stop_irq(rdev);
1497         /* Move the device states to detached and  avoid sending any more
1498          * commands to HW
1499          */
1500         set_bit(BNXT_RE_FLAG_ERR_DEVICE_DETACHED, &rdev->flags);
1501         set_bit(ERR_DEVICE_DETACHED, &rdev->rcfw.cmdq.flags);
1502         mutex_unlock(&bnxt_re_mutex);
1503
1504         return 0;
1505 }
1506
1507 static int bnxt_re_resume(struct auxiliary_device *adev)
1508 {
1509         struct bnxt_re_dev *rdev = auxiliary_get_drvdata(adev);
1510
1511         if (!rdev)
1512                 return 0;
1513
1514         mutex_lock(&bnxt_re_mutex);
1515         /* L2 driver may invoke this callback during device recovery, resume.
1516          * reset. Current RoCE driver doesn't recover the device in case of
1517          * error. Handle the error by dispatching fatal events to all qps
1518          * ie. by calling bnxt_re_dev_stop and release the MSIx vectors as
1519          * L2 driver want to modify the MSIx table.
1520          */
1521
1522         ibdev_info(&rdev->ibdev, "Handle device resume call");
1523         mutex_unlock(&bnxt_re_mutex);
1524
1525         return 0;
1526 }
1527
1528 static const struct auxiliary_device_id bnxt_re_id_table[] = {
1529         { .name = BNXT_ADEV_NAME ".rdma", },
1530         {},
1531 };
1532
1533 MODULE_DEVICE_TABLE(auxiliary, bnxt_re_id_table);
1534
1535 static struct auxiliary_driver bnxt_re_driver = {
1536         .name = "rdma",
1537         .probe = bnxt_re_probe,
1538         .remove = bnxt_re_remove,
1539         .shutdown = bnxt_re_shutdown,
1540         .suspend = bnxt_re_suspend,
1541         .resume = bnxt_re_resume,
1542         .id_table = bnxt_re_id_table,
1543 };
1544
1545 static int __init bnxt_re_mod_init(void)
1546 {
1547         int rc = 0;
1548
1549         pr_info("%s: %s", ROCE_DRV_MODULE_NAME, version);
1550         rc = auxiliary_driver_register(&bnxt_re_driver);
1551         if (rc) {
1552                 pr_err("%s: Failed to register auxiliary driver\n",
1553                         ROCE_DRV_MODULE_NAME);
1554                 return rc;
1555         }
1556         return 0;
1557 }
1558
1559 static void __exit bnxt_re_mod_exit(void)
1560 {
1561         auxiliary_driver_unregister(&bnxt_re_driver);
1562 }
1563
1564 module_init(bnxt_re_mod_init);
1565 module_exit(bnxt_re_mod_exit);