drivers/infiniband/hw/bnxt_re/qplib_sp.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: Slow Path Operators
  37  */
  38
  39 #include <linux/interrupt.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/sched.h>
  42 #include <linux/pci.h>
  43
  44 #include "roce_hsi.h"
  45
  46 #include "qplib_res.h"
  47 #include "qplib_rcfw.h"
  48 #include "qplib_sp.h"
  49
  50 const struct bnxt_qplib_gid bnxt_qplib_gid_zero = {{ 0, 0, 0, 0, 0, 0, 0, 0,
  51                                                      0, 0, 0, 0, 0, 0, 0, 0 } };
  52
  53 /* Device */
  54
  55 static bool bnxt_qplib_is_atomic_cap(struct bnxt_qplib_rcfw *rcfw)
  56 {
  57         int rc;
  58         u16 pcie_ctl2;
  59
  60         rc = pcie_capability_read_word(rcfw->pdev, PCI_EXP_DEVCTL2,
  61                                        &pcie_ctl2);
  62         if (rc)
  63                 return false;
  64         return !!(pcie_ctl2 & PCI_EXP_DEVCTL2_ATOMIC_REQ);
  65 }
  66
  67 int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
  68                             struct bnxt_qplib_dev_attr *attr)
  69 {
  70         struct cmdq_query_func req;
  71         struct creq_query_func_resp resp;
  72         struct bnxt_qplib_rcfw_sbuf *sbuf;
  73         struct creq_query_func_resp_sb *sb;
  74         u16 cmd_flags = 0;
  75         u32 temp;
  76         u8 *tqm_alloc;
  77         int i, rc = 0;
  78
  79         RCFW_CMD_PREP(req, QUERY_FUNC, cmd_flags);
  80
  81         sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb));
  82         if (!sbuf) {
  83                 dev_err(&rcfw->pdev->dev,
  84                         "QPLIB: SP: QUERY_FUNC alloc side buffer failed");
  85                 return -ENOMEM;
  86         }
  87
  88         sb = sbuf->sb;
  89         req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS;
  90         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
  91                                           (void *)sbuf, 0);
  92         if (rc)
  93                 goto bail;
  94
  95         /* Extract the context from the side buffer */
  96         attr->max_qp = le32_to_cpu(sb->max_qp);
  97         /* max_qp value reported by FW for PF doesn't include the QP1 for PF */
  98         attr->max_qp += 1;
  99         attr->max_qp_rd_atom =
 100                 sb->max_qp_rd_atom > BNXT_QPLIB_MAX_OUT_RD_ATOM ?
 101                 BNXT_QPLIB_MAX_OUT_RD_ATOM : sb->max_qp_rd_atom;
 102         attr->max_qp_init_rd_atom =
 103                 sb->max_qp_init_rd_atom > BNXT_QPLIB_MAX_OUT_RD_ATOM ?
 104                 BNXT_QPLIB_MAX_OUT_RD_ATOM : sb->max_qp_init_rd_atom;
 105         attr->max_qp_wqes = le16_to_cpu(sb->max_qp_wr);
 106         /*
 107          * 128 WQEs needs to be reserved for the HW (8916). Prevent
 108          * reporting the max number
 109          */
 110         attr->max_qp_wqes -= BNXT_QPLIB_RESERVED_QP_WRS;
 111         attr->max_qp_sges = sb->max_sge;
 112         attr->max_cq = le32_to_cpu(sb->max_cq);
 113         attr->max_cq_wqes = le32_to_cpu(sb->max_cqe);
 114         attr->max_cq_sges = attr->max_qp_sges;
 115         attr->max_mr = le32_to_cpu(sb->max_mr);
 116         attr->max_mw = le32_to_cpu(sb->max_mw);
 117
 118         attr->max_mr_size = le64_to_cpu(sb->max_mr_size);
 119         attr->max_pd = 64 * 1024;
 120         attr->max_raw_ethy_qp = le32_to_cpu(sb->max_raw_eth_qp);
 121         attr->max_ah = le32_to_cpu(sb->max_ah);
 122
 123         attr->max_fmr = le32_to_cpu(sb->max_fmr);
 124         attr->max_map_per_fmr = sb->max_map_per_fmr;
 125
 126         attr->max_srq = le16_to_cpu(sb->max_srq);
 127         attr->max_srq_wqes = le32_to_cpu(sb->max_srq_wr) - 1;
 128         attr->max_srq_sges = sb->max_srq_sge;
 129         /* Bono only reports 1 PKEY for now, but it can support > 1 */
 130         attr->max_pkey = le32_to_cpu(sb->max_pkeys);
 131
 132         attr->max_inline_data = le32_to_cpu(sb->max_inline_data);
 133         attr->l2_db_size = (sb->l2_db_space_size + 1) *
 134                             (0x01 << RCFW_DBR_BASE_PAGE_SHIFT);
 135         attr->max_sgid = le32_to_cpu(sb->max_gid);
 136
 137         strlcpy(attr->fw_ver, "20.6.28.0", sizeof(attr->fw_ver));
 138
 139         for (i = 0; i < MAX_TQM_ALLOC_REQ / 4; i++) {
 140                 temp = le32_to_cpu(sb->tqm_alloc_reqs[i]);
 141                 tqm_alloc = (u8 *)&temp;
 142                 attr->tqm_alloc_reqs[i * 4] = *tqm_alloc;
 143                 attr->tqm_alloc_reqs[i * 4 + 1] = *(++tqm_alloc);
 144                 attr->tqm_alloc_reqs[i * 4 + 2] = *(++tqm_alloc);
 145                 attr->tqm_alloc_reqs[i * 4 + 3] = *(++tqm_alloc);
 146         }
 147
 148         attr->is_atomic = bnxt_qplib_is_atomic_cap(rcfw);
 149 bail:
 150         bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf);
 151         return rc;
 152 }
 153
 154 /* SGID */
 155 int bnxt_qplib_get_sgid(struct bnxt_qplib_res *res,
 156                         struct bnxt_qplib_sgid_tbl *sgid_tbl, int index,
 157                         struct bnxt_qplib_gid *gid)
 158 {
 159         if (index >= sgid_tbl->max) {
 160                 dev_err(&res->pdev->dev,
 161                         "QPLIB: Index %d exceeded SGID table max (%d)",
 162                         index, sgid_tbl->max);
 163                 return -EINVAL;
 164         }
 165         memcpy(gid, &sgid_tbl->tbl[index], sizeof(*gid));
 166         return 0;
 167 }
 168
 169 int bnxt_qplib_del_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 170                         struct bnxt_qplib_gid *gid, bool update)
 171 {
 172         struct bnxt_qplib_res *res = to_bnxt_qplib(sgid_tbl,
 173                                                    struct bnxt_qplib_res,
 174                                                    sgid_tbl);
 175         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 176         int index;
 177
 178         if (!sgid_tbl) {
 179                 dev_err(&res->pdev->dev, "QPLIB: SGID table not allocated");
 180                 return -EINVAL;
 181         }
 182         /* Do we need a sgid_lock here? */
 183         if (!sgid_tbl->active) {
 184                 dev_err(&res->pdev->dev,
 185                         "QPLIB: SGID table has no active entries");
 186                 return -ENOMEM;
 187         }
 188         for (index = 0; index < sgid_tbl->max; index++) {
 189                 if (!memcmp(&sgid_tbl->tbl[index], gid, sizeof(*gid)))
 190                         break;
 191         }
 192         if (index == sgid_tbl->max) {
 193                 dev_warn(&res->pdev->dev, "GID not found in the SGID table");
 194                 return 0;
 195         }
 196         /* Remove GID from the SGID table */
 197         if (update) {
 198                 struct cmdq_delete_gid req;
 199                 struct creq_delete_gid_resp resp;
 200                 u16 cmd_flags = 0;
 201                 int rc;
 202
 203                 RCFW_CMD_PREP(req, DELETE_GID, cmd_flags);
 204                 if (sgid_tbl->hw_id[index] == 0xFFFF) {
 205                         dev_err(&res->pdev->dev,
 206                                 "QPLIB: GID entry contains an invalid HW id");
 207                         return -EINVAL;
 208                 }
 209                 req.gid_index = cpu_to_le16(sgid_tbl->hw_id[index]);
 210                 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 211                                                   (void *)&resp, NULL, 0);
 212                 if (rc)
 213                         return rc;
 214         }
 215         memcpy(&sgid_tbl->tbl[index], &bnxt_qplib_gid_zero,
 216                sizeof(bnxt_qplib_gid_zero));
 217         sgid_tbl->vlan[index] = 0;
 218         sgid_tbl->active--;
 219         dev_dbg(&res->pdev->dev,
 220                 "QPLIB: SGID deleted hw_id[0x%x] = 0x%x active = 0x%x",
 221                  index, sgid_tbl->hw_id[index], sgid_tbl->active);
 222         sgid_tbl->hw_id[index] = (u16)-1;
 223
 224         /* unlock */
 225         return 0;
 226 }
 227
 228 int bnxt_qplib_add_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 229                         struct bnxt_qplib_gid *gid, u8 *smac, u16 vlan_id,
 230                         bool update, u32 *index)
 231 {
 232         struct bnxt_qplib_res *res = to_bnxt_qplib(sgid_tbl,
 233                                                    struct bnxt_qplib_res,
 234                                                    sgid_tbl);
 235         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 236         int i, free_idx;
 237
 238         if (!sgid_tbl) {
 239                 dev_err(&res->pdev->dev, "QPLIB: SGID table not allocated");
 240                 return -EINVAL;
 241         }
 242         /* Do we need a sgid_lock here? */
 243         if (sgid_tbl->active == sgid_tbl->max) {
 244                 dev_err(&res->pdev->dev, "QPLIB: SGID table is full");
 245                 return -ENOMEM;
 246         }
 247         free_idx = sgid_tbl->max;
 248         for (i = 0; i < sgid_tbl->max; i++) {
 249                 if (!memcmp(&sgid_tbl->tbl[i], gid, sizeof(*gid))) {
 250                         dev_dbg(&res->pdev->dev,
 251                                 "QPLIB: SGID entry already exist in entry %d!",
 252                                 i);
 253                         *index = i;
 254                         return -EALREADY;
 255                 } else if (!memcmp(&sgid_tbl->tbl[i], &bnxt_qplib_gid_zero,
 256                                    sizeof(bnxt_qplib_gid_zero)) &&
 257                            free_idx == sgid_tbl->max) {
 258                         free_idx = i;
 259                 }
 260         }
 261         if (free_idx == sgid_tbl->max) {
 262                 dev_err(&res->pdev->dev,
 263                         "QPLIB: SGID table is FULL but count is not MAX??");
 264                 return -ENOMEM;
 265         }
 266         if (update) {
 267                 struct cmdq_add_gid req;
 268                 struct creq_add_gid_resp resp;
 269                 u16 cmd_flags = 0;
 270                 int rc;
 271
 272                 RCFW_CMD_PREP(req, ADD_GID, cmd_flags);
 273
 274                 req.gid[0] = cpu_to_be32(((u32 *)gid->data)[3]);
 275                 req.gid[1] = cpu_to_be32(((u32 *)gid->data)[2]);
 276                 req.gid[2] = cpu_to_be32(((u32 *)gid->data)[1]);
 277                 req.gid[3] = cpu_to_be32(((u32 *)gid->data)[0]);
 278                 /*
 279                  * driver should ensure that all RoCE traffic is always VLAN
 280                  * tagged if RoCE traffic is running on non-zero VLAN ID or
 281                  * RoCE traffic is running on non-zero Priority.
 282                  */
 283                 if ((vlan_id != 0xFFFF) || res->prio) {
 284                         if (vlan_id != 0xFFFF)
 285                                 req.vlan = cpu_to_le16
 286                                 (vlan_id & CMDQ_ADD_GID_VLAN_VLAN_ID_MASK);
 287                         req.vlan |= cpu_to_le16
 288                                         (CMDQ_ADD_GID_VLAN_TPID_TPID_8100 |
 289                                          CMDQ_ADD_GID_VLAN_VLAN_EN);
 290                 }
 291
 292                 /* MAC in network format */
 293                 req.src_mac[0] = cpu_to_be16(((u16 *)smac)[0]);
 294                 req.src_mac[1] = cpu_to_be16(((u16 *)smac)[1]);
 295                 req.src_mac[2] = cpu_to_be16(((u16 *)smac)[2]);
 296
 297                 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 298                                                   (void *)&resp, NULL, 0);
 299                 if (rc)
 300                         return rc;
 301                 sgid_tbl->hw_id[free_idx] = le32_to_cpu(resp.xid);
 302         }
 303         /* Add GID to the sgid_tbl */
 304         memcpy(&sgid_tbl->tbl[free_idx], gid, sizeof(*gid));
 305         sgid_tbl->active++;
 306         if (vlan_id != 0xFFFF)
 307                 sgid_tbl->vlan[free_idx] = 1;
 308
 309         dev_dbg(&res->pdev->dev,
 310                 "QPLIB: SGID added hw_id[0x%x] = 0x%x active = 0x%x",
 311                  free_idx, sgid_tbl->hw_id[free_idx], sgid_tbl->active);
 312
 313         *index = free_idx;
 314         /* unlock */
 315         return 0;
 316 }
 317
 318 int bnxt_qplib_update_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 319                            struct bnxt_qplib_gid *gid, u16 gid_idx,
 320                            u8 *smac)
 321 {
 322         struct bnxt_qplib_res *res = to_bnxt_qplib(sgid_tbl,
 323                                                    struct bnxt_qplib_res,
 324                                                    sgid_tbl);
 325         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 326         struct creq_modify_gid_resp resp;
 327         struct cmdq_modify_gid req;
 328         int rc;
 329         u16 cmd_flags = 0;
 330
 331         RCFW_CMD_PREP(req, MODIFY_GID, cmd_flags);
 332
 333         req.gid[0] = cpu_to_be32(((u32 *)gid->data)[3]);
 334         req.gid[1] = cpu_to_be32(((u32 *)gid->data)[2]);
 335         req.gid[2] = cpu_to_be32(((u32 *)gid->data)[1]);
 336         req.gid[3] = cpu_to_be32(((u32 *)gid->data)[0]);
 337         if (res->prio) {
 338                 req.vlan |= cpu_to_le16
 339                         (CMDQ_ADD_GID_VLAN_TPID_TPID_8100 |
 340                          CMDQ_ADD_GID_VLAN_VLAN_EN);
 341         }
 342
 343         /* MAC in network format */
 344         req.src_mac[0] = cpu_to_be16(((u16 *)smac)[0]);
 345         req.src_mac[1] = cpu_to_be16(((u16 *)smac)[1]);
 346         req.src_mac[2] = cpu_to_be16(((u16 *)smac)[2]);
 347
 348         req.gid_index = cpu_to_le16(gid_idx);
 349
 350         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 351                                           (void *)&resp, NULL, 0);
 352         return rc;
 353 }
 354
 355 /* pkeys */
 356 int bnxt_qplib_get_pkey(struct bnxt_qplib_res *res,
 357                         struct bnxt_qplib_pkey_tbl *pkey_tbl, u16 index,
 358                         u16 *pkey)
 359 {
 360         if (index == 0xFFFF) {
 361                 *pkey = 0xFFFF;
 362                 return 0;
 363         }
 364         if (index >= pkey_tbl->max) {
 365                 dev_err(&res->pdev->dev,
 366                         "QPLIB: Index %d exceeded PKEY table max (%d)",
 367                         index, pkey_tbl->max);
 368                 return -EINVAL;
 369         }
 370         memcpy(pkey, &pkey_tbl->tbl[index], sizeof(*pkey));
 371         return 0;
 372 }
 373
 374 int bnxt_qplib_del_pkey(struct bnxt_qplib_res *res,
 375                         struct bnxt_qplib_pkey_tbl *pkey_tbl, u16 *pkey,
 376                         bool update)
 377 {
 378         int i, rc = 0;
 379
 380         if (!pkey_tbl) {
 381                 dev_err(&res->pdev->dev, "QPLIB: PKEY table not allocated");
 382                 return -EINVAL;
 383         }
 384
 385         /* Do we need a pkey_lock here? */
 386         if (!pkey_tbl->active) {
 387                 dev_err(&res->pdev->dev,
 388                         "QPLIB: PKEY table has no active entries");
 389                 return -ENOMEM;
 390         }
 391         for (i = 0; i < pkey_tbl->max; i++) {
 392                 if (!memcmp(&pkey_tbl->tbl[i], pkey, sizeof(*pkey)))
 393                         break;
 394         }
 395         if (i == pkey_tbl->max) {
 396                 dev_err(&res->pdev->dev,
 397                         "QPLIB: PKEY 0x%04x not found in the pkey table",
 398                         *pkey);
 399                 return -ENOMEM;
 400         }
 401         memset(&pkey_tbl->tbl[i], 0, sizeof(*pkey));
 402         pkey_tbl->active--;
 403
 404         /* unlock */
 405         return rc;
 406 }
 407
 408 int bnxt_qplib_add_pkey(struct bnxt_qplib_res *res,
 409                         struct bnxt_qplib_pkey_tbl *pkey_tbl, u16 *pkey,
 410                         bool update)
 411 {
 412         int i, free_idx, rc = 0;
 413
 414         if (!pkey_tbl) {
 415                 dev_err(&res->pdev->dev, "QPLIB: PKEY table not allocated");
 416                 return -EINVAL;
 417         }
 418
 419         /* Do we need a pkey_lock here? */
 420         if (pkey_tbl->active == pkey_tbl->max) {
 421                 dev_err(&res->pdev->dev, "QPLIB: PKEY table is full");
 422                 return -ENOMEM;
 423         }
 424         free_idx = pkey_tbl->max;
 425         for (i = 0; i < pkey_tbl->max; i++) {
 426                 if (!memcmp(&pkey_tbl->tbl[i], pkey, sizeof(*pkey)))
 427                         return -EALREADY;
 428                 else if (!pkey_tbl->tbl[i] && free_idx == pkey_tbl->max)
 429                         free_idx = i;
 430         }
 431         if (free_idx == pkey_tbl->max) {
 432                 dev_err(&res->pdev->dev,
 433                         "QPLIB: PKEY table is FULL but count is not MAX??");
 434                 return -ENOMEM;
 435         }
 436         /* Add PKEY to the pkey_tbl */
 437         memcpy(&pkey_tbl->tbl[free_idx], pkey, sizeof(*pkey));
 438         pkey_tbl->active++;
 439
 440         /* unlock */
 441         return rc;
 442 }
 443
 444 /* AH */
 445 int bnxt_qplib_create_ah(struct bnxt_qplib_res *res, struct bnxt_qplib_ah *ah)
 446 {
 447         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 448         struct cmdq_create_ah req;
 449         struct creq_create_ah_resp resp;
 450         u16 cmd_flags = 0;
 451         u32 temp32[4];
 452         u16 temp16[3];
 453         int rc;
 454
 455         RCFW_CMD_PREP(req, CREATE_AH, cmd_flags);
 456
 457         memcpy(temp32, ah->dgid.data, sizeof(struct bnxt_qplib_gid));
 458         req.dgid[0] = cpu_to_le32(temp32[0]);
 459         req.dgid[1] = cpu_to_le32(temp32[1]);
 460         req.dgid[2] = cpu_to_le32(temp32[2]);
 461         req.dgid[3] = cpu_to_le32(temp32[3]);
 462
 463         req.type = ah->nw_type;
 464         req.hop_limit = ah->hop_limit;
 465         req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id[ah->sgid_index]);
 466         req.dest_vlan_id_flow_label = cpu_to_le32((ah->flow_label &
 467                                         CMDQ_CREATE_AH_FLOW_LABEL_MASK) |
 468                                         CMDQ_CREATE_AH_DEST_VLAN_ID_MASK);
 469         req.pd_id = cpu_to_le32(ah->pd->id);
 470         req.traffic_class = ah->traffic_class;
 471
 472         /* MAC in network format */
 473         memcpy(temp16, ah->dmac, 6);
 474         req.dest_mac[0] = cpu_to_le16(temp16[0]);
 475         req.dest_mac[1] = cpu_to_le16(temp16[1]);
 476         req.dest_mac[2] = cpu_to_le16(temp16[2]);
 477
 478         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
 479                                           NULL, 1);
 480         if (rc)
 481                 return rc;
 482
 483         ah->id = le32_to_cpu(resp.xid);
 484         return 0;
 485 }
 486
 487 int bnxt_qplib_destroy_ah(struct bnxt_qplib_res *res, struct bnxt_qplib_ah *ah)
 488 {
 489         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 490         struct cmdq_destroy_ah req;
 491         struct creq_destroy_ah_resp resp;
 492         u16 cmd_flags = 0;
 493         int rc;
 494
 495         /* Clean up the AH table in the device */
 496         RCFW_CMD_PREP(req, DESTROY_AH, cmd_flags);
 497
 498         req.ah_cid = cpu_to_le32(ah->id);
 499
 500         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
 501                                           NULL, 1);
 502         if (rc)
 503                 return rc;
 504         return 0;
 505 }
 506
 507 /* MRW */
 508 int bnxt_qplib_free_mrw(struct bnxt_qplib_res *res, struct bnxt_qplib_mrw *mrw)
 509 {
 510         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 511         struct cmdq_deallocate_key req;
 512         struct creq_deallocate_key_resp resp;
 513         u16 cmd_flags = 0;
 514         int rc;
 515
 516         if (mrw->lkey == 0xFFFFFFFF) {
 517                 dev_info(&res->pdev->dev,
 518                          "QPLIB: SP: Free a reserved lkey MRW");
 519                 return 0;
 520         }
 521
 522         RCFW_CMD_PREP(req, DEALLOCATE_KEY, cmd_flags);
 523
 524         req.mrw_flags = mrw->type;
 525
 526         if ((mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE1)  ||
 527             (mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE2A) ||
 528             (mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE2B))
 529                 req.key = cpu_to_le32(mrw->rkey);
 530         else
 531                 req.key = cpu_to_le32(mrw->lkey);
 532
 533         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
 534                                           NULL, 0);
 535         if (rc)
 536                 return rc;
 537
 538         /* Free the qplib's MRW memory */
 539         if (mrw->hwq.max_elements)
 540                 bnxt_qplib_free_hwq(res->pdev, &mrw->hwq);
 541
 542         return 0;
 543 }
 544
 545 int bnxt_qplib_alloc_mrw(struct bnxt_qplib_res *res, struct bnxt_qplib_mrw *mrw)
 546 {
 547         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 548         struct cmdq_allocate_mrw req;
 549         struct creq_allocate_mrw_resp resp;
 550         u16 cmd_flags = 0;
 551         unsigned long tmp;
 552         int rc;
 553
 554         RCFW_CMD_PREP(req, ALLOCATE_MRW, cmd_flags);
 555
 556         req.pd_id = cpu_to_le32(mrw->pd->id);
 557         req.mrw_flags = mrw->type;
 558         if ((mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR &&
 559              mrw->flags & BNXT_QPLIB_FR_PMR) ||
 560             mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE2A ||
 561             mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE2B)
 562                 req.access = CMDQ_ALLOCATE_MRW_ACCESS_CONSUMER_OWNED_KEY;
 563         tmp = (unsigned long)mrw;
 564         req.mrw_handle = cpu_to_le64(tmp);
 565
 566         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 567                                           (void *)&resp, NULL, 0);
 568         if (rc)
 569                 return rc;
 570
 571         if ((mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE1)  ||
 572             (mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE2A) ||
 573             (mrw->type == CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE2B))
 574                 mrw->rkey = le32_to_cpu(resp.xid);
 575         else
 576                 mrw->lkey = le32_to_cpu(resp.xid);
 577         return 0;
 578 }
 579
 580 int bnxt_qplib_dereg_mrw(struct bnxt_qplib_res *res, struct bnxt_qplib_mrw *mrw,
 581                          bool block)
 582 {
 583         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 584         struct cmdq_deregister_mr req;
 585         struct creq_deregister_mr_resp resp;
 586         u16 cmd_flags = 0;
 587         int rc;
 588
 589         RCFW_CMD_PREP(req, DEREGISTER_MR, cmd_flags);
 590
 591         req.lkey = cpu_to_le32(mrw->lkey);
 592         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 593                                           (void *)&resp, NULL, block);
 594         if (rc)
 595                 return rc;
 596
 597         /* Free the qplib's MR memory */
 598         if (mrw->hwq.max_elements) {
 599                 mrw->va = 0;
 600                 mrw->total_size = 0;
 601                 bnxt_qplib_free_hwq(res->pdev, &mrw->hwq);
 602         }
 603
 604         return 0;
 605 }
 606
 607 int bnxt_qplib_reg_mr(struct bnxt_qplib_res *res, struct bnxt_qplib_mrw *mr,
 608                       u64 *pbl_tbl, int num_pbls, bool block)
 609 {
 610         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 611         struct cmdq_register_mr req;
 612         struct creq_register_mr_resp resp;
 613         u16 cmd_flags = 0, level;
 614         int pg_ptrs, pages, i, rc;
 615         dma_addr_t **pbl_ptr;
 616         u32 pg_size;
 617
 618         if (num_pbls) {
 619                 pg_ptrs = roundup_pow_of_two(num_pbls);
 620                 pages = pg_ptrs >> MAX_PBL_LVL_1_PGS_SHIFT;
 621                 if (!pages)
 622                         pages++;
 623
 624                 if (pages > MAX_PBL_LVL_1_PGS) {
 625                         dev_err(&res->pdev->dev, "QPLIB: SP: Reg MR pages ");
 626                         dev_err(&res->pdev->dev,
 627                                 "requested (0x%x) exceeded max (0x%x)",
 628                                 pages, MAX_PBL_LVL_1_PGS);
 629                         return -ENOMEM;
 630                 }
 631                 /* Free the hwq if it already exist, must be a rereg */
 632                 if (mr->hwq.max_elements)
 633                         bnxt_qplib_free_hwq(res->pdev, &mr->hwq);
 634
 635                 mr->hwq.max_elements = pages;
 636                 rc = bnxt_qplib_alloc_init_hwq(res->pdev, &mr->hwq, NULL, 0,
 637                                                &mr->hwq.max_elements,
 638                                                PAGE_SIZE, 0, PAGE_SIZE,
 639                                                HWQ_TYPE_CTX);
 640                 if (rc) {
 641                         dev_err(&res->pdev->dev,
 642                                 "SP: Reg MR memory allocation failed");
 643                         return -ENOMEM;
 644                 }
 645                 /* Write to the hwq */
 646                 pbl_ptr = (dma_addr_t **)mr->hwq.pbl_ptr;
 647                 for (i = 0; i < num_pbls; i++)
 648                         pbl_ptr[PTR_PG(i)][PTR_IDX(i)] =
 649                                 (pbl_tbl[i] & PAGE_MASK) | PTU_PTE_VALID;
 650         }
 651
 652         RCFW_CMD_PREP(req, REGISTER_MR, cmd_flags);
 653
 654         /* Configure the request */
 655         if (mr->hwq.level == PBL_LVL_MAX) {
 656                 level = 0;
 657                 req.pbl = 0;
 658                 pg_size = PAGE_SIZE;
 659         } else {
 660                 level = mr->hwq.level + 1;
 661                 req.pbl = cpu_to_le64(mr->hwq.pbl[PBL_LVL_0].pg_map_arr[0]);
 662                 pg_size = mr->hwq.pbl[PBL_LVL_0].pg_size;
 663         }
 664         req.log2_pg_size_lvl = (level << CMDQ_REGISTER_MR_LVL_SFT) |
 665                                ((ilog2(pg_size) <<
 666                                  CMDQ_REGISTER_MR_LOG2_PG_SIZE_SFT) &
 667                                 CMDQ_REGISTER_MR_LOG2_PG_SIZE_MASK);
 668         req.access = (mr->flags & 0xFFFF);
 669         req.va = cpu_to_le64(mr->va);
 670         req.key = cpu_to_le32(mr->lkey);
 671         req.mr_size = cpu_to_le64(mr->total_size);
 672
 673         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 674                                           (void *)&resp, NULL, block);
 675         if (rc)
 676                 goto fail;
 677
 678         return 0;
 679
 680 fail:
 681         if (mr->hwq.max_elements)
 682                 bnxt_qplib_free_hwq(res->pdev, &mr->hwq);
 683         return rc;
 684 }
 685
 686 int bnxt_qplib_alloc_fast_reg_page_list(struct bnxt_qplib_res *res,
 687                                         struct bnxt_qplib_frpl *frpl,
 688                                         int max_pg_ptrs)
 689 {
 690         int pg_ptrs, pages, rc;
 691
 692         /* Re-calculate the max to fit the HWQ allocation model */
 693         pg_ptrs = roundup_pow_of_two(max_pg_ptrs);
 694         pages = pg_ptrs >> MAX_PBL_LVL_1_PGS_SHIFT;
 695         if (!pages)
 696                 pages++;
 697
 698         if (pages > MAX_PBL_LVL_1_PGS)
 699                 return -ENOMEM;
 700
 701         frpl->hwq.max_elements = pages;
 702         rc = bnxt_qplib_alloc_init_hwq(res->pdev, &frpl->hwq, NULL, 0,
 703                                        &frpl->hwq.max_elements, PAGE_SIZE, 0,
 704                                        PAGE_SIZE, HWQ_TYPE_CTX);
 705         if (!rc)
 706                 frpl->max_pg_ptrs = pg_ptrs;
 707
 708         return rc;
 709 }
 710
 711 int bnxt_qplib_free_fast_reg_page_list(struct bnxt_qplib_res *res,
 712                                        struct bnxt_qplib_frpl *frpl)
 713 {
 714         bnxt_qplib_free_hwq(res->pdev, &frpl->hwq);
 715         return 0;
 716 }
 717
 718 int bnxt_qplib_map_tc2cos(struct bnxt_qplib_res *res, u16 *cids)
 719 {
 720         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 721         struct cmdq_map_tc_to_cos req;
 722         struct creq_map_tc_to_cos_resp resp;
 723         u16 cmd_flags = 0;
 724         int rc = 0;
 725
 726         RCFW_CMD_PREP(req, MAP_TC_TO_COS, cmd_flags);
 727         req.cos0 = cpu_to_le16(cids[0]);
 728         req.cos1 = cpu_to_le16(cids[1]);
 729
 730         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 731                                           (void *)&resp, NULL, 0);
 732         return 0;
 733 }