drivers/net/bnxt/bnxt_vnic.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2014-2015 Broadcom Corporation.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Broadcom Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <inttypes.h>
  35
  36 #include <rte_memzone.h>
  37 #include <rte_malloc.h>
  38
  39 #include "bnxt.h"
  40 #include "bnxt_vnic.h"
  41 #include "hsi_struct_def_dpdk.h"
  42
  43 /*
  44  * VNIC Functions
  45  */
  46
  47 static void prandom_bytes(void *dest_ptr, size_t len)
  48 {
  49         char *dest = (char *)dest_ptr;
  50         uint64_t rb;
  51
  52         while (len) {
  53                 rb = rte_rand();
  54                 if (len >= 8) {
  55                         memcpy(dest, &rb, 8);
  56                         len -= 8;
  57                         dest += 8;
  58                 } else {
  59                         memcpy(dest, &rb, len);
  60                         dest += len;
  61                         len = 0;
  62                 }
  63         }
  64 }
  65
  66 void bnxt_init_vnics(struct bnxt *bp)
  67 {
  68         struct bnxt_vnic_info *vnic;
  69         uint16_t max_vnics;
  70         int i, j;
  71
  72         if (BNXT_PF(bp)) {
  73                 struct bnxt_pf_info *pf = &bp->pf;
  74
  75                 max_vnics = pf->max_vnics;
  76         } else {
  77                 struct bnxt_vf_info *vf = &bp->vf;
  78
  79                 max_vnics = vf->max_vnics;
  80         }
  81         STAILQ_INIT(&bp->free_vnic_list);
  82         for (i = 0; i < max_vnics; i++) {
  83                 vnic = &bp->vnic_info[i];
  84                 vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
  85                 vnic->fw_rss_cos_lb_ctx = (uint16_t)HWRM_NA_SIGNATURE;
  86                 vnic->ctx_is_rss_cos_lb = HW_CONTEXT_NONE;
  87
  88                 for (j = 0; j < MAX_QUEUES_PER_VNIC; j++)
  89                         vnic->fw_grp_ids[j] = (uint16_t)HWRM_NA_SIGNATURE;
  90
  91                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
  92                 STAILQ_INIT(&vnic->filter);
  93                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  94         }
  95         for (i = 0; i < MAX_FF_POOLS; i++)
  96                 STAILQ_INIT(&bp->ff_pool[i]);
  97 }
  98
  99 int bnxt_free_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic,
 100                           int pool)
 101 {
 102         struct bnxt_vnic_info *temp;
 103
 104         temp = STAILQ_FIRST(&bp->ff_pool[pool]);
 105         while (temp) {
 106                 if (temp == vnic) {
 107                         STAILQ_REMOVE(&bp->ff_pool[pool], vnic,
 108                                       bnxt_vnic_info, next);
 109                         vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
 110                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic,
 111                                            next);
 112                         return 0;
 113                 }
 114                 temp = STAILQ_NEXT(temp, next);
 115         }
 116         RTE_LOG(ERR, PMD, "VNIC %p is not found in pool[%d]\n", vnic, pool);
 117         return -EINVAL;
 118 }
 119
 120 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
 121 {
 122         struct bnxt_vnic_info *vnic;
 123
 124         /* Find the 1st unused vnic from the free_vnic_list pool*/
 125         vnic = STAILQ_FIRST(&bp->free_vnic_list);
 126         if (!vnic) {
 127                 RTE_LOG(ERR, PMD, "No more free VNIC resources\n");
 128                 return NULL;
 129         }
 130         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
 131         return vnic;
 132 }
 133
 134 void bnxt_free_all_vnics(struct bnxt *bp)
 135 {
 136         struct bnxt_vnic_info *temp, *next;
 137         int i;
 138
 139         for (i = 0; i < MAX_FF_POOLS; i++) {
 140                 temp = STAILQ_FIRST(&bp->ff_pool[i]);
 141                 while (temp) {
 142                         next = STAILQ_NEXT(temp, next);
 143                         STAILQ_REMOVE(&bp->ff_pool[i], temp, bnxt_vnic_info,
 144                                       next);
 145                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
 146                         temp = next;
 147                 }
 148         }
 149 }
 150
 151 void bnxt_free_vnic_attributes(struct bnxt *bp)
 152 {
 153         struct bnxt_vnic_info *vnic;
 154
 155         STAILQ_FOREACH(vnic, &bp->free_vnic_list, next) {
 156                 if (vnic->rss_table) {
 157                         /* 'Unreserve' the rss_table */
 158                         /* N/A */
 159
 160                         vnic->rss_table = NULL;
 161                 }
 162
 163                 if (vnic->rss_hash_key) {
 164                         /* 'Unreserve' the rss_hash_key */
 165                         /* N/A */
 166
 167                         vnic->rss_hash_key = NULL;
 168                 }
 169         }
 170 }
 171
 172 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 173 {
 174         struct bnxt_vnic_info *vnic;
 175         struct rte_pci_device *pdev = bp->pdev;
 176         const struct rte_memzone *mz;
 177         char mz_name[RTE_MEMZONE_NAMESIZE];
 178         uint32_t entry_length = RTE_CACHE_LINE_ROUNDUP(
 179                                 HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table) +
 180                                 HW_HASH_KEY_SIZE);
 181         uint16_t max_vnics;
 182         int i;
 183
 184         if (BNXT_PF(bp)) {
 185                 struct bnxt_pf_info *pf = &bp->pf;
 186
 187                 max_vnics = pf->max_vnics;
 188         } else {
 189                 struct bnxt_vf_info *vf = &bp->vf;
 190
 191                 max_vnics = vf->max_vnics;
 192         }
 193         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 194                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 195                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 196         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 197         mz = rte_memzone_lookup(mz_name);
 198         if (!mz) {
 199                 mz = rte_memzone_reserve(mz_name,
 200                                          entry_length * max_vnics,
 201                                          SOCKET_ID_ANY,
 202                                          RTE_MEMZONE_2MB |
 203                                          RTE_MEMZONE_SIZE_HINT_ONLY);
 204                 if (!mz)
 205                         return -ENOMEM;
 206         }
 207
 208         for (i = 0; i < max_vnics; i++) {
 209                 vnic = &bp->vnic_info[i];
 210
 211                 /* Allocate rss table and hash key */
 212                 vnic->rss_table =
 213                         (void *)((char *)mz->addr + (entry_length * i));
 214                 memset(vnic->rss_table, -1, entry_length);
 215
 216                 vnic->rss_table_dma_addr = mz->phys_addr + (entry_length * i);
 217                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 218                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table));
 219
 220                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 221                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 222         }
 223
 224         return 0;
 225 }
 226
 227 void bnxt_free_vnic_mem(struct bnxt *bp)
 228 {
 229         struct bnxt_vnic_info *vnic;
 230         uint16_t max_vnics, i;
 231
 232         if (bp->vnic_info == NULL)
 233                 return;
 234
 235         if (BNXT_PF(bp)) {
 236                 struct bnxt_pf_info *pf = &bp->pf;
 237
 238                 max_vnics = pf->max_vnics;
 239         } else {
 240                 struct bnxt_vf_info *vf = &bp->vf;
 241
 242                 max_vnics = vf->max_vnics;
 243         }
 244         for (i = 0; i < max_vnics; i++) {
 245                 vnic = &bp->vnic_info[i];
 246                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 247                         RTE_LOG(ERR, PMD, "VNIC is not freed yet!\n");
 248                         /* TODO Call HWRM to free VNIC */
 249                 }
 250         }
 251
 252         rte_free(bp->vnic_info);
 253         bp->vnic_info = NULL;
 254 }
 255
 256 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 257 {
 258         struct bnxt_vnic_info *vnic_mem;
 259         uint16_t max_vnics;
 260
 261         if (BNXT_PF(bp)) {
 262                 struct bnxt_pf_info *pf = &bp->pf;
 263
 264                 max_vnics = pf->max_vnics;
 265         } else {
 266                 struct bnxt_vf_info *vf = &bp->vf;
 267
 268                 max_vnics = vf->max_vnics;
 269         }
 270         /* Allocate memory for VNIC pool and filter pool */
 271         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 272                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 273         if (vnic_mem == NULL) {
 274                 RTE_LOG(ERR, PMD, "Failed to alloc memory for %d VNICs",
 275                         max_vnics);
 276                 return -ENOMEM;
 277         }
 278         bp->vnic_info = vnic_mem;
 279         return 0;
 280 }