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         max_vnics = bp->max_vnics;
  73         STAILQ_INIT(&bp->free_vnic_list);
  74         for (i = 0; i < max_vnics; i++) {
  75                 vnic = &bp->vnic_info[i];
  76                 vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
  77                 vnic->rss_rule = (uint16_t)HWRM_NA_SIGNATURE;
  78                 vnic->cos_rule = (uint16_t)HWRM_NA_SIGNATURE;
  79                 vnic->lb_rule = (uint16_t)HWRM_NA_SIGNATURE;
  80
  81                 for (j = 0; j < MAX_QUEUES_PER_VNIC; j++)
  82                         vnic->fw_grp_ids[j] = (uint16_t)HWRM_NA_SIGNATURE;
  83
  84                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
  85                 STAILQ_INIT(&vnic->filter);
  86                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  87         }
  88         for (i = 0; i < MAX_FF_POOLS; i++)
  89                 STAILQ_INIT(&bp->ff_pool[i]);
  90 }
  91
  92 int bnxt_free_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic,
  93                           int pool)
  94 {
  95         struct bnxt_vnic_info *temp;
  96
  97         temp = STAILQ_FIRST(&bp->ff_pool[pool]);
  98         while (temp) {
  99                 if (temp == vnic) {
 100                         STAILQ_REMOVE(&bp->ff_pool[pool], vnic,
 101                                       bnxt_vnic_info, next);
 102                         vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
 103                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic,
 104                                            next);
 105                         return 0;
 106                 }
 107                 temp = STAILQ_NEXT(temp, next);
 108         }
 109         RTE_LOG(ERR, PMD, "VNIC %p is not found in pool[%d]\n", vnic, pool);
 110         return -EINVAL;
 111 }
 112
 113 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
 114 {
 115         struct bnxt_vnic_info *vnic;
 116
 117         /* Find the 1st unused vnic from the free_vnic_list pool*/
 118         vnic = STAILQ_FIRST(&bp->free_vnic_list);
 119         if (!vnic) {
 120                 RTE_LOG(ERR, PMD, "No more free VNIC resources\n");
 121                 return NULL;
 122         }
 123         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
 124         return vnic;
 125 }
 126
 127 void bnxt_free_all_vnics(struct bnxt *bp)
 128 {
 129         struct bnxt_vnic_info *temp, *next;
 130         int i;
 131
 132         for (i = 0; i < MAX_FF_POOLS; i++) {
 133                 temp = STAILQ_FIRST(&bp->ff_pool[i]);
 134                 while (temp) {
 135                         next = STAILQ_NEXT(temp, next);
 136                         STAILQ_REMOVE(&bp->ff_pool[i], temp, bnxt_vnic_info,
 137                                       next);
 138                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
 139                         temp = next;
 140                 }
 141         }
 142 }
 143
 144 void bnxt_free_vnic_attributes(struct bnxt *bp)
 145 {
 146         struct bnxt_vnic_info *vnic;
 147
 148         STAILQ_FOREACH(vnic, &bp->free_vnic_list, next) {
 149                 if (vnic->rss_table) {
 150                         /* 'Unreserve' the rss_table */
 151                         /* N/A */
 152
 153                         vnic->rss_table = NULL;
 154                 }
 155
 156                 if (vnic->rss_hash_key) {
 157                         /* 'Unreserve' the rss_hash_key */
 158                         /* N/A */
 159
 160                         vnic->rss_hash_key = NULL;
 161                 }
 162         }
 163 }
 164
 165 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 166 {
 167         struct bnxt_vnic_info *vnic;
 168         struct rte_pci_device *pdev = bp->pdev;
 169         const struct rte_memzone *mz;
 170         char mz_name[RTE_MEMZONE_NAMESIZE];
 171         uint32_t entry_length = RTE_CACHE_LINE_ROUNDUP(
 172                                 HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table) +
 173                                 HW_HASH_KEY_SIZE);
 174         uint16_t max_vnics;
 175         int i;
 176         phys_addr_t mz_phys_addr;
 177
 178         max_vnics = bp->max_vnics;
 179         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 180                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 181                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 182         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 183         mz = rte_memzone_lookup(mz_name);
 184         if (!mz) {
 185                 mz = rte_memzone_reserve(mz_name,
 186                                          entry_length * max_vnics,
 187                                          SOCKET_ID_ANY,
 188                                          RTE_MEMZONE_2MB |
 189                                          RTE_MEMZONE_SIZE_HINT_ONLY);
 190                 if (!mz)
 191                         return -ENOMEM;
 192         }
 193         mz_phys_addr = mz->phys_addr;
 194         if ((unsigned long)mz->addr == mz_phys_addr) {
 195                 RTE_LOG(WARNING, PMD,
 196                         "Memzone physical address same as virtual.\n");
 197                 RTE_LOG(WARNING, PMD,
 198                         "Using rte_mem_virt2phy()\n");
 199                 mz_phys_addr = rte_mem_virt2phy(mz->addr);
 200                 if (mz_phys_addr == 0) {
 201                         RTE_LOG(ERR, PMD,
 202                         "unable to map vnic address to physical memory\n");
 203                         return -ENOMEM;
 204                 }
 205         }
 206
 207         for (i = 0; i < max_vnics; i++) {
 208                 vnic = &bp->vnic_info[i];
 209
 210                 /* Allocate rss table and hash key */
 211                 vnic->rss_table =
 212                         (void *)((char *)mz->addr + (entry_length * i));
 213                 memset(vnic->rss_table, -1, entry_length);
 214
 215                 vnic->rss_table_dma_addr = mz_phys_addr + (entry_length * i);
 216                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 217                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table));
 218
 219                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 220                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 221         }
 222
 223         return 0;
 224 }
 225
 226 void bnxt_free_vnic_mem(struct bnxt *bp)
 227 {
 228         struct bnxt_vnic_info *vnic;
 229         uint16_t max_vnics, i;
 230
 231         if (bp->vnic_info == NULL)
 232                 return;
 233
 234         max_vnics = bp->max_vnics;
 235         for (i = 0; i < max_vnics; i++) {
 236                 vnic = &bp->vnic_info[i];
 237                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 238                         RTE_LOG(ERR, PMD, "VNIC is not freed yet!\n");
 239                         /* TODO Call HWRM to free VNIC */
 240                 }
 241         }
 242
 243         rte_free(bp->vnic_info);
 244         bp->vnic_info = NULL;
 245 }
 246
 247 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 248 {
 249         struct bnxt_vnic_info *vnic_mem;
 250         uint16_t max_vnics;
 251
 252         max_vnics = bp->max_vnics;
 253         /* Allocate memory for VNIC pool and filter pool */
 254         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 255                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 256         if (vnic_mem == NULL) {
 257                 RTE_LOG(ERR, PMD, "Failed to alloc memory for %d VNICs",
 258                         max_vnics);
 259                 return -ENOMEM;
 260         }
 261         bp->vnic_info = vnic_mem;
 262         return 0;
 263 }