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