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
  53                 for (j = 0; j < MAX_QUEUES_PER_VNIC; j++)
  54                         vnic->fw_grp_ids[j] = (uint16_t)HWRM_NA_SIGNATURE;
  55
  56                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
  57                 STAILQ_INIT(&vnic->filter);
  58                 STAILQ_INIT(&vnic->flow_list);
  59                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  60         }
  61         for (i = 0; i < MAX_FF_POOLS; i++)
  62                 STAILQ_INIT(&bp->ff_pool[i]);
  63 }
  64
  65 int bnxt_free_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic,
  66                           int pool)
  67 {
  68         struct bnxt_vnic_info *temp;
  69
  70         temp = STAILQ_FIRST(&bp->ff_pool[pool]);
  71         while (temp) {
  72                 if (temp == vnic) {
  73                         STAILQ_REMOVE(&bp->ff_pool[pool], vnic,
  74                                       bnxt_vnic_info, next);
  75                         vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
  76                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic,
  77                                            next);
  78                         return 0;
  79                 }
  80                 temp = STAILQ_NEXT(temp, next);
  81         }
  82         PMD_DRV_LOG(ERR, "VNIC %p is not found in pool[%d]\n", vnic, pool);
  83         return -EINVAL;
  84 }
  85
  86 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
  87 {
  88         struct bnxt_vnic_info *vnic;
  89
  90         /* Find the 1st unused vnic from the free_vnic_list pool*/
  91         vnic = STAILQ_FIRST(&bp->free_vnic_list);
  92         if (!vnic) {
  93                 PMD_DRV_LOG(ERR, "No more free VNIC resources\n");
  94                 return NULL;
  95         }
  96         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
  97         return vnic;
  98 }
  99
 100 void bnxt_free_all_vnics(struct bnxt *bp)
 101 {
 102         struct bnxt_vnic_info *temp, *next;
 103         int i;
 104
 105         for (i = 0; i < MAX_FF_POOLS; i++) {
 106                 temp = STAILQ_FIRST(&bp->ff_pool[i]);
 107                 while (temp) {
 108                         next = STAILQ_NEXT(temp, next);
 109                         STAILQ_REMOVE(&bp->ff_pool[i], temp, bnxt_vnic_info,
 110                                       next);
 111                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
 112                         temp = next;
 113                 }
 114         }
 115 }
 116
 117 void bnxt_free_vnic_attributes(struct bnxt *bp)
 118 {
 119         struct bnxt_vnic_info *vnic;
 120
 121         STAILQ_FOREACH(vnic, &bp->free_vnic_list, next) {
 122                 if (vnic->rss_table) {
 123                         /* 'Unreserve' the rss_table */
 124                         /* N/A */
 125
 126                         vnic->rss_table = NULL;
 127                 }
 128
 129                 if (vnic->rss_hash_key) {
 130                         /* 'Unreserve' the rss_hash_key */
 131                         /* N/A */
 132
 133                         vnic->rss_hash_key = NULL;
 134                 }
 135         }
 136 }
 137
 138 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 139 {
 140         struct bnxt_vnic_info *vnic;
 141         struct rte_pci_device *pdev = bp->pdev;
 142         const struct rte_memzone *mz;
 143         char mz_name[RTE_MEMZONE_NAMESIZE];
 144         uint32_t entry_length = RTE_CACHE_LINE_ROUNDUP(
 145                                 HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table) +
 146                                 HW_HASH_KEY_SIZE +
 147                                 BNXT_MAX_MC_ADDRS * ETHER_ADDR_LEN);
 148         uint16_t max_vnics;
 149         int i;
 150         rte_iova_t mz_phys_addr;
 151
 152         max_vnics = bp->max_vnics;
 153         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 154                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 155                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 156         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 157         mz = rte_memzone_lookup(mz_name);
 158         if (!mz) {
 159                 mz = rte_memzone_reserve(mz_name,
 160                                 entry_length * max_vnics, SOCKET_ID_ANY,
 161                                 RTE_MEMZONE_2MB |
 162                                 RTE_MEMZONE_SIZE_HINT_ONLY |
 163                                 RTE_MEMZONE_IOVA_CONTIG);
 164                 if (!mz)
 165                         return -ENOMEM;
 166         }
 167         mz_phys_addr = mz->iova;
 168         if ((unsigned long)mz->addr == mz_phys_addr) {
 169                 PMD_DRV_LOG(WARNING,
 170                         "Memzone physical address same as virtual.\n");
 171                 PMD_DRV_LOG(WARNING,
 172                         "Using rte_mem_virt2iova()\n");
 173                 mz_phys_addr = rte_mem_virt2iova(mz->addr);
 174                 if (mz_phys_addr == 0) {
 175                         PMD_DRV_LOG(ERR,
 176                         "unable to map vnic address to physical memory\n");
 177                         return -ENOMEM;
 178                 }
 179         }
 180
 181         for (i = 0; i < max_vnics; i++) {
 182                 vnic = &bp->vnic_info[i];
 183
 184                 /* Allocate rss table and hash key */
 185                 vnic->rss_table =
 186                         (void *)((char *)mz->addr + (entry_length * i));
 187                 memset(vnic->rss_table, -1, entry_length);
 188
 189                 vnic->rss_table_dma_addr = mz_phys_addr + (entry_length * i);
 190                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 191                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table));
 192
 193                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 194                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 195                 vnic->mc_list = (void *)((char *)vnic->rss_hash_key +
 196                                 HW_HASH_KEY_SIZE);
 197                 vnic->mc_list_dma_addr = vnic->rss_hash_key_dma_addr +
 198                                 HW_HASH_KEY_SIZE;
 199         }
 200
 201         return 0;
 202 }
 203
 204 void bnxt_free_vnic_mem(struct bnxt *bp)
 205 {
 206         struct bnxt_vnic_info *vnic;
 207         uint16_t max_vnics, i;
 208
 209         if (bp->vnic_info == NULL)
 210                 return;
 211
 212         max_vnics = bp->max_vnics;
 213         for (i = 0; i < max_vnics; i++) {
 214                 vnic = &bp->vnic_info[i];
 215                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 216                         PMD_DRV_LOG(ERR, "VNIC is not freed yet!\n");
 217                         /* TODO Call HWRM to free VNIC */
 218                 }
 219         }
 220
 221         rte_free(bp->vnic_info);
 222         bp->vnic_info = NULL;
 223 }
 224
 225 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 226 {
 227         struct bnxt_vnic_info *vnic_mem;
 228         uint16_t max_vnics;
 229
 230         max_vnics = bp->max_vnics;
 231         /* Allocate memory for VNIC pool and filter pool */
 232         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 233                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 234         if (vnic_mem == NULL) {
 235                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d VNICs",
 236                         max_vnics);
 237                 return -ENOMEM;
 238         }
 239         bp->vnic_info = vnic_mem;
 240         return 0;
 241 }