drivers/net/bnxt/bnxt_vnic.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <inttypes.h>
   7
   8 #include <rte_memzone.h>
   9 #include <rte_malloc.h>
  10
  11 #include "bnxt.h"
  12 #include "bnxt_vnic.h"
  13 #include "hsi_struct_def_dpdk.h"
  14
  15 /*
  16  * VNIC Functions
  17  */
  18
  19 static void prandom_bytes(void *dest_ptr, size_t len)
  20 {
  21         char *dest = (char *)dest_ptr;
  22         uint64_t rb;
  23
  24         while (len) {
  25                 rb = rte_rand();
  26                 if (len >= 8) {
  27                         memcpy(dest, &rb, 8);
  28                         len -= 8;
  29                         dest += 8;
  30                 } else {
  31                         memcpy(dest, &rb, len);
  32                         dest += len;
  33                         len = 0;
  34                 }
  35         }
  36 }
  37
  38 void bnxt_init_vnics(struct bnxt *bp)
  39 {
  40         struct bnxt_vnic_info *vnic;
  41         uint16_t max_vnics;
  42         int i, j;
  43
  44         max_vnics = bp->max_vnics;
  45         STAILQ_INIT(&bp->free_vnic_list);
  46         for (i = 0; i < max_vnics; i++) {
  47                 vnic = &bp->vnic_info[i];
  48                 vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
  49                 vnic->rss_rule = (uint16_t)HWRM_NA_SIGNATURE;
  50                 vnic->cos_rule = (uint16_t)HWRM_NA_SIGNATURE;
  51                 vnic->lb_rule = (uint16_t)HWRM_NA_SIGNATURE;
  52                 vnic->hash_mode =
  53                         HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_DEFAULT;
  54
  55                 for (j = 0; j < MAX_QUEUES_PER_VNIC; j++)
  56                         vnic->fw_grp_ids[j] = (uint16_t)HWRM_NA_SIGNATURE;
  57
  58                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
  59                 STAILQ_INIT(&vnic->filter);
  60                 STAILQ_INIT(&vnic->flow_list);
  61                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  62         }
  63         for (i = 0; i < MAX_FF_POOLS; i++)
  64                 STAILQ_INIT(&bp->ff_pool[i]);
  65 }
  66
  67 int bnxt_free_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic,
  68                           int pool)
  69 {
  70         struct bnxt_vnic_info *temp;
  71
  72         temp = STAILQ_FIRST(&bp->ff_pool[pool]);
  73         while (temp) {
  74                 if (temp == vnic) {
  75                         STAILQ_REMOVE(&bp->ff_pool[pool], vnic,
  76                                       bnxt_vnic_info, next);
  77                         vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
  78                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic,
  79                                            next);
  80                         return 0;
  81                 }
  82                 temp = STAILQ_NEXT(temp, next);
  83         }
  84         PMD_DRV_LOG(ERR, "VNIC %p is not found in pool[%d]\n", vnic, pool);
  85         return -EINVAL;
  86 }
  87
  88 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
  89 {
  90         struct bnxt_vnic_info *vnic;
  91
  92         /* Find the 1st unused vnic from the free_vnic_list pool*/
  93         vnic = STAILQ_FIRST(&bp->free_vnic_list);
  94         if (!vnic) {
  95                 PMD_DRV_LOG(ERR, "No more free VNIC resources\n");
  96                 return NULL;
  97         }
  98         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
  99         return vnic;
 100 }
 101
 102 void bnxt_free_all_vnics(struct bnxt *bp)
 103 {
 104         struct bnxt_vnic_info *temp, *next;
 105         int i;
 106
 107         for (i = 0; i < MAX_FF_POOLS; i++) {
 108                 temp = STAILQ_FIRST(&bp->ff_pool[i]);
 109                 while (temp) {
 110                         next = STAILQ_NEXT(temp, next);
 111                         STAILQ_REMOVE(&bp->ff_pool[i], temp, bnxt_vnic_info,
 112                                       next);
 113                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
 114                         temp = next;
 115                 }
 116         }
 117 }
 118
 119 void bnxt_free_vnic_attributes(struct bnxt *bp)
 120 {
 121         struct bnxt_vnic_info *vnic;
 122
 123         STAILQ_FOREACH(vnic, &bp->free_vnic_list, next) {
 124                 if (vnic->rss_table) {
 125                         /* 'Unreserve' the rss_table */
 126                         /* N/A */
 127
 128                         vnic->rss_table = NULL;
 129                 }
 130
 131                 if (vnic->rss_hash_key) {
 132                         /* 'Unreserve' the rss_hash_key */
 133                         /* N/A */
 134
 135                         vnic->rss_hash_key = NULL;
 136                 }
 137         }
 138 }
 139
 140 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 141 {
 142         struct bnxt_vnic_info *vnic;
 143         struct rte_pci_device *pdev = bp->pdev;
 144         const struct rte_memzone *mz;
 145         char mz_name[RTE_MEMZONE_NAMESIZE];
 146         uint32_t entry_length = RTE_CACHE_LINE_ROUNDUP(
 147                                 HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table) +
 148                                 HW_HASH_KEY_SIZE +
 149                                 BNXT_MAX_MC_ADDRS * ETHER_ADDR_LEN);
 150         uint16_t max_vnics;
 151         int i;
 152         rte_iova_t mz_phys_addr;
 153
 154         max_vnics = bp->max_vnics;
 155         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 156                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 157                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 158         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 159         mz = rte_memzone_lookup(mz_name);
 160         if (!mz) {
 161                 mz = rte_memzone_reserve(mz_name,
 162                                 entry_length * max_vnics, SOCKET_ID_ANY,
 163                                 RTE_MEMZONE_2MB |
 164                                 RTE_MEMZONE_SIZE_HINT_ONLY |
 165                                 RTE_MEMZONE_IOVA_CONTIG);
 166                 if (!mz)
 167                         return -ENOMEM;
 168         }
 169         mz_phys_addr = mz->iova;
 170         if ((unsigned long)mz->addr == mz_phys_addr) {
 171                 PMD_DRV_LOG(WARNING,
 172                         "Memzone physical address same as virtual.\n");
 173                 PMD_DRV_LOG(WARNING,
 174                         "Using rte_mem_virt2iova()\n");
 175                 mz_phys_addr = rte_mem_virt2iova(mz->addr);
 176                 if (mz_phys_addr == 0) {
 177                         PMD_DRV_LOG(ERR,
 178                         "unable to map vnic address to physical memory\n");
 179                         return -ENOMEM;
 180                 }
 181         }
 182
 183         for (i = 0; i < max_vnics; i++) {
 184                 vnic = &bp->vnic_info[i];
 185
 186                 /* Allocate rss table and hash key */
 187                 vnic->rss_table =
 188                         (void *)((char *)mz->addr + (entry_length * i));
 189                 memset(vnic->rss_table, -1, entry_length);
 190
 191                 vnic->rss_table_dma_addr = mz_phys_addr + (entry_length * i);
 192                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 193                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table));
 194
 195                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 196                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 197                 vnic->mc_list = (void *)((char *)vnic->rss_hash_key +
 198                                 HW_HASH_KEY_SIZE);
 199                 vnic->mc_list_dma_addr = vnic->rss_hash_key_dma_addr +
 200                                 HW_HASH_KEY_SIZE;
 201         }
 202
 203         return 0;
 204 }
 205
 206 void bnxt_free_vnic_mem(struct bnxt *bp)
 207 {
 208         struct bnxt_vnic_info *vnic;
 209         uint16_t max_vnics, i;
 210
 211         if (bp->vnic_info == NULL)
 212                 return;
 213
 214         max_vnics = bp->max_vnics;
 215         for (i = 0; i < max_vnics; i++) {
 216                 vnic = &bp->vnic_info[i];
 217                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 218                         PMD_DRV_LOG(ERR, "VNIC is not freed yet!\n");
 219                         /* TODO Call HWRM to free VNIC */
 220                 }
 221         }
 222
 223         rte_free(bp->vnic_info);
 224         bp->vnic_info = NULL;
 225 }
 226
 227 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 228 {
 229         struct bnxt_vnic_info *vnic_mem;
 230         uint16_t max_vnics;
 231
 232         max_vnics = bp->max_vnics;
 233         /* Allocate memory for VNIC pool and filter pool */
 234         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 235                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 236         if (vnic_mem == NULL) {
 237                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d VNICs",
 238                         max_vnics);
 239                 return -ENOMEM;
 240         }
 241         bp->vnic_info = vnic_mem;
 242         return 0;
 243 }