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 }
  61
  62 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
  63 {
  64         struct bnxt_vnic_info *vnic;
  65
  66         /* Find the 1st unused vnic from the free_vnic_list pool*/
  67         vnic = STAILQ_FIRST(&bp->free_vnic_list);
  68         if (!vnic) {
  69                 PMD_DRV_LOG(ERR, "No more free VNIC resources\n");
  70                 return NULL;
  71         }
  72         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
  73         return vnic;
  74 }
  75
  76 void bnxt_free_all_vnics(struct bnxt *bp)
  77 {
  78         struct bnxt_vnic_info *temp;
  79         unsigned int i;
  80
  81         for (i = 0; i < bp->nr_vnics; i++) {
  82                 temp = &bp->vnic_info[i];
  83                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
  84         }
  85 }
  86
  87 void bnxt_free_vnic_attributes(struct bnxt *bp)
  88 {
  89         struct bnxt_vnic_info *vnic;
  90         unsigned int i;
  91
  92         for (i = 0; i < bp->max_vnics; i++) {
  93                 vnic = &bp->vnic_info[i];
  94                 if (vnic->rss_table) {
  95                         /* 'Unreserve' the rss_table */
  96                         /* N/A */
  97
  98                         vnic->rss_table = NULL;
  99                 }
 100
 101                 if (vnic->rss_hash_key) {
 102                         /* 'Unreserve' the rss_hash_key */
 103                         /* N/A */
 104
 105                         vnic->rss_hash_key = NULL;
 106                 }
 107         }
 108 }
 109
 110 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 111 {
 112         struct bnxt_vnic_info *vnic;
 113         struct rte_pci_device *pdev = bp->pdev;
 114         const struct rte_memzone *mz;
 115         char mz_name[RTE_MEMZONE_NAMESIZE];
 116         uint32_t entry_length;
 117         uint16_t max_vnics;
 118         int i;
 119         rte_iova_t mz_phys_addr;
 120
 121         entry_length = HW_HASH_KEY_SIZE +
 122                        BNXT_MAX_MC_ADDRS * RTE_ETHER_ADDR_LEN;
 123
 124         if (BNXT_CHIP_THOR(bp))
 125                 entry_length += BNXT_RSS_TBL_SIZE_THOR *
 126                                 2 * sizeof(*vnic->rss_table);
 127         else
 128                 entry_length += HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 129         entry_length = RTE_CACHE_LINE_ROUNDUP(entry_length);
 130
 131         max_vnics = bp->max_vnics;
 132         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 133                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 134                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 135         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 136         mz = rte_memzone_lookup(mz_name);
 137         if (!mz) {
 138                 mz = rte_memzone_reserve(mz_name,
 139                                 entry_length * max_vnics, SOCKET_ID_ANY,
 140                                 RTE_MEMZONE_2MB |
 141                                 RTE_MEMZONE_SIZE_HINT_ONLY |
 142                                 RTE_MEMZONE_IOVA_CONTIG);
 143                 if (!mz)
 144                         return -ENOMEM;
 145         }
 146         mz_phys_addr = mz->iova;
 147         if ((unsigned long)mz->addr == mz_phys_addr) {
 148                 PMD_DRV_LOG(WARNING,
 149                         "Memzone physical address same as virtual.\n");
 150                 PMD_DRV_LOG(WARNING,
 151                         "Using rte_mem_virt2iova()\n");
 152                 mz_phys_addr = rte_mem_virt2iova(mz->addr);
 153                 if (mz_phys_addr == 0) {
 154                         PMD_DRV_LOG(ERR,
 155                         "unable to map vnic address to physical memory\n");
 156                         return -ENOMEM;
 157                 }
 158         }
 159
 160         for (i = 0; i < max_vnics; i++) {
 161                 vnic = &bp->vnic_info[i];
 162
 163                 /* Allocate rss table and hash key */
 164                 vnic->rss_table =
 165                         (void *)((char *)mz->addr + (entry_length * i));
 166                 memset(vnic->rss_table, -1, entry_length);
 167
 168                 vnic->rss_table_dma_addr = mz_phys_addr + (entry_length * i);
 169                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 170                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table));
 171
 172                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 173                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 174                 vnic->mc_list = (void *)((char *)vnic->rss_hash_key +
 175                                 HW_HASH_KEY_SIZE);
 176                 vnic->mc_list_dma_addr = vnic->rss_hash_key_dma_addr +
 177                                 HW_HASH_KEY_SIZE;
 178         }
 179
 180         return 0;
 181 }
 182
 183 void bnxt_free_vnic_mem(struct bnxt *bp)
 184 {
 185         struct bnxt_vnic_info *vnic;
 186         uint16_t max_vnics, i;
 187
 188         if (bp->vnic_info == NULL)
 189                 return;
 190
 191         max_vnics = bp->max_vnics;
 192         for (i = 0; i < max_vnics; i++) {
 193                 vnic = &bp->vnic_info[i];
 194                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 195                         PMD_DRV_LOG(ERR, "VNIC is not freed yet!\n");
 196                         /* TODO Call HWRM to free VNIC */
 197                 }
 198         }
 199
 200         rte_free(bp->vnic_info);
 201         bp->vnic_info = NULL;
 202 }
 203
 204 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 205 {
 206         struct bnxt_vnic_info *vnic_mem;
 207         uint16_t max_vnics;
 208
 209         max_vnics = bp->max_vnics;
 210         /* Allocate memory for VNIC pool and filter pool */
 211         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 212                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 213         if (vnic_mem == NULL) {
 214                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d VNICs",
 215                         max_vnics);
 216                 return -ENOMEM;
 217         }
 218         bp->vnic_info = vnic_mem;
 219         return 0;
 220 }