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;
  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                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
  89                 STAILQ_INIT(&vnic->filter);
  90                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  91         }
  92         for (i = 0; i < MAX_FF_POOLS; i++)
  93                 STAILQ_INIT(&bp->ff_pool[i]);
  94 }
  95
  96 int bnxt_free_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic,
  97                           int pool)
  98 {
  99         struct bnxt_vnic_info *temp;
 100
 101         temp = STAILQ_FIRST(&bp->ff_pool[pool]);
 102         while (temp) {
 103                 if (temp == vnic) {
 104                         STAILQ_REMOVE(&bp->ff_pool[pool], vnic,
 105                                       bnxt_vnic_info, next);
 106                         vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
 107                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic,
 108                                            next);
 109                         return 0;
 110                 }
 111                 temp = STAILQ_NEXT(temp, next);
 112         }
 113         RTE_LOG(ERR, PMD, "VNIC %p is not found in pool[%d]\n", vnic, pool);
 114         return -EINVAL;
 115 }
 116
 117 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
 118 {
 119         struct bnxt_vnic_info *vnic;
 120
 121         /* Find the 1st unused vnic from the free_vnic_list pool*/
 122         vnic = STAILQ_FIRST(&bp->free_vnic_list);
 123         if (!vnic) {
 124                 RTE_LOG(ERR, PMD, "No more free VNIC resources\n");
 125                 return NULL;
 126         }
 127         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
 128         return vnic;
 129 }
 130
 131 void bnxt_free_all_vnics(struct bnxt *bp)
 132 {
 133         struct bnxt_vnic_info *temp, *next;
 134         int i;
 135
 136         for (i = 0; i < MAX_FF_POOLS; i++) {
 137                 temp = STAILQ_FIRST(&bp->ff_pool[i]);
 138                 while (temp) {
 139                         next = STAILQ_NEXT(temp, next);
 140                         STAILQ_REMOVE(&bp->ff_pool[i], temp, bnxt_vnic_info,
 141                                       next);
 142                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
 143                         temp = next;
 144                 }
 145         }
 146 }
 147
 148 void bnxt_free_vnic_attributes(struct bnxt *bp)
 149 {
 150         struct bnxt_vnic_info *vnic;
 151
 152         STAILQ_FOREACH(vnic, &bp->free_vnic_list, next) {
 153                 if (vnic->rss_table) {
 154                         /* 'Unreserve' the rss_table */
 155                         /* N/A */
 156
 157                         vnic->rss_table = NULL;
 158                 }
 159
 160                 if (vnic->rss_hash_key) {
 161                         /* 'Unreserve' the rss_hash_key */
 162                         /* N/A */
 163
 164                         vnic->rss_hash_key = NULL;
 165                 }
 166         }
 167 }
 168
 169 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 170 {
 171         struct bnxt_vnic_info *vnic;
 172         struct rte_pci_device *pdev = bp->pdev;
 173         const struct rte_memzone *mz;
 174         char mz_name[RTE_MEMZONE_NAMESIZE];
 175         uint32_t entry_length = RTE_CACHE_LINE_ROUNDUP(
 176                                 HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table) +
 177                                 HW_HASH_KEY_SIZE);
 178         uint16_t max_vnics;
 179         int i;
 180
 181         if (BNXT_PF(bp)) {
 182                 struct bnxt_pf_info *pf = &bp->pf;
 183
 184                 max_vnics = pf->max_vnics;
 185         } else {
 186                 struct bnxt_vf_info *vf = &bp->vf;
 187
 188                 max_vnics = vf->max_vnics;
 189         }
 190         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 191                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 192                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 193         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 194         mz = rte_memzone_lookup(mz_name);
 195         if (!mz) {
 196                 mz = rte_memzone_reserve(mz_name,
 197                                          entry_length * max_vnics,
 198                                          SOCKET_ID_ANY,
 199                                          RTE_MEMZONE_2MB |
 200                                          RTE_MEMZONE_SIZE_HINT_ONLY);
 201                 if (!mz)
 202                         return -ENOMEM;
 203         }
 204
 205         for (i = 0; i < max_vnics; i++) {
 206                 vnic = &bp->vnic_info[i];
 207
 208                 /* Allocate rss table and hash key */
 209                 vnic->rss_table =
 210                         (void *)((char *)mz->addr + (entry_length * i));
 211                 memset(vnic->rss_table, -1, entry_length);
 212
 213                 vnic->rss_table_dma_addr = mz->phys_addr + (entry_length * i);
 214                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 215                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table));
 216
 217                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 218                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 219         }
 220
 221         return 0;
 222 }
 223
 224 void bnxt_free_vnic_mem(struct bnxt *bp)
 225 {
 226         struct bnxt_vnic_info *vnic;
 227         uint16_t max_vnics, i;
 228
 229         if (bp->vnic_info == NULL)
 230                 return;
 231
 232         if (BNXT_PF(bp)) {
 233                 struct bnxt_pf_info *pf = &bp->pf;
 234
 235                 max_vnics = pf->max_vnics;
 236         } else {
 237                 struct bnxt_vf_info *vf = &bp->vf;
 238
 239                 max_vnics = vf->max_vnics;
 240         }
 241         for (i = 0; i < max_vnics; i++) {
 242                 vnic = &bp->vnic_info[i];
 243                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 244                         RTE_LOG(ERR, PMD, "VNIC is not freed yet!\n");
 245                         /* TODO Call HWRM to free VNIC */
 246                 }
 247         }
 248
 249         rte_free(bp->vnic_info);
 250         bp->vnic_info = NULL;
 251 }
 252
 253 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 254 {
 255         struct bnxt_vnic_info *vnic_mem;
 256         uint16_t max_vnics;
 257
 258         if (BNXT_PF(bp)) {
 259                 struct bnxt_pf_info *pf = &bp->pf;
 260
 261                 max_vnics = pf->max_vnics;
 262         } else {
 263                 struct bnxt_vf_info *vf = &bp->vf;
 264
 265                 max_vnics = vf->max_vnics;
 266         }
 267         /* Allocate memory for VNIC pool and filter pool */
 268         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 269                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 270         if (vnic_mem == NULL) {
 271                 RTE_LOG(ERR, PMD, "Failed to alloc memory for %d VNICs",
 272                         max_vnics);
 273                 return -ENOMEM;
 274         }
 275         bp->vnic_info = vnic_mem;
 276         return 0;
 277 }