drivers/net/bnxt/bnxt_ring.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <rte_bitmap.h>
   7 #include <rte_memzone.h>
   8 #include <unistd.h>
   9
  10 #include "bnxt.h"
  11 #include "bnxt_cpr.h"
  12 #include "bnxt_hwrm.h"
  13 #include "bnxt_ring.h"
  14 #include "bnxt_rxq.h"
  15 #include "bnxt_rxr.h"
  16 #include "bnxt_txq.h"
  17 #include "bnxt_txr.h"
  18
  19 #include "hsi_struct_def_dpdk.h"
  20
  21 /*
  22  * Generic ring handling
  23  */
  24
  25 void bnxt_free_ring(struct bnxt_ring *ring)
  26 {
  27         if (ring->vmem_size && *ring->vmem) {
  28                 memset((char *)*ring->vmem, 0, ring->vmem_size);
  29                 *ring->vmem = NULL;
  30         }
  31         rte_memzone_free((const struct rte_memzone *)ring->mem_zone);
  32 }
  33
  34 /*
  35  * Ring groups
  36  */
  37
  38 int bnxt_init_ring_grps(struct bnxt *bp)
  39 {
  40         unsigned int i;
  41
  42         for (i = 0; i < bp->max_ring_grps; i++)
  43                 memset(&bp->grp_info[i], (uint8_t)HWRM_NA_SIGNATURE,
  44                        sizeof(struct bnxt_ring_grp_info));
  45
  46         return 0;
  47 }
  48
  49 /*
  50  * Allocates a completion ring with vmem and stats optionally also allocating
  51  * a TX and/or RX ring.  Passing NULL as tx_ring_info and/or rx_ring_info
  52  * to not allocate them.
  53  *
  54  * Order in the allocation is:
  55  * stats - Always non-zero length
  56  * cp vmem - Always zero-length, supported for the bnxt_ring abstraction
  57  * tx vmem - Only non-zero length if tx_ring_info is not NULL
  58  * rx vmem - Only non-zero length if rx_ring_info is not NULL
  59  * cp bd ring - Always non-zero length
  60  * tx bd ring - Only non-zero length if tx_ring_info is not NULL
  61  * rx bd ring - Only non-zero length if rx_ring_info is not NULL
  62  */
  63 int bnxt_alloc_rings(struct bnxt *bp, uint16_t qidx,
  64                             struct bnxt_tx_ring_info *tx_ring_info,
  65                             struct bnxt_rx_ring_info *rx_ring_info,
  66                             struct bnxt_cp_ring_info *cp_ring_info,
  67                             const char *suffix)
  68 {
  69         struct bnxt_ring *cp_ring = cp_ring_info->cp_ring_struct;
  70         struct bnxt_ring *tx_ring;
  71         struct bnxt_ring *rx_ring;
  72         struct rte_pci_device *pdev = bp->pdev;
  73         const struct rte_memzone *mz = NULL;
  74         char mz_name[RTE_MEMZONE_NAMESIZE];
  75         rte_iova_t mz_phys_addr;
  76         int sz;
  77
  78         int stats_len = (tx_ring_info || rx_ring_info) ?
  79             RTE_CACHE_LINE_ROUNDUP(sizeof(struct ctx_hw_stats64)) : 0;
  80
  81         int cp_vmem_start = stats_len;
  82         int cp_vmem_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->vmem_size);
  83
  84         int tx_vmem_start = cp_vmem_start + cp_vmem_len;
  85         int tx_vmem_len =
  86             tx_ring_info ? RTE_CACHE_LINE_ROUNDUP(tx_ring_info->
  87                                                 tx_ring_struct->vmem_size) : 0;
  88
  89         int rx_vmem_start = tx_vmem_start + tx_vmem_len;
  90         int rx_vmem_len = rx_ring_info ?
  91                 RTE_CACHE_LINE_ROUNDUP(rx_ring_info->
  92                                                 rx_ring_struct->vmem_size) : 0;
  93         int ag_vmem_start = 0;
  94         int ag_vmem_len = 0;
  95         int cp_ring_start =  0;
  96
  97         ag_vmem_start = rx_vmem_start + rx_vmem_len;
  98         ag_vmem_len = rx_ring_info ? RTE_CACHE_LINE_ROUNDUP(
  99                                 rx_ring_info->ag_ring_struct->vmem_size) : 0;
 100         cp_ring_start = ag_vmem_start + ag_vmem_len;
 101
 102         int cp_ring_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->ring_size *
 103                                                  sizeof(struct cmpl_base));
 104
 105         int tx_ring_start = cp_ring_start + cp_ring_len;
 106         int tx_ring_len = tx_ring_info ?
 107             RTE_CACHE_LINE_ROUNDUP(tx_ring_info->tx_ring_struct->ring_size *
 108                                    sizeof(struct tx_bd_long)) : 0;
 109
 110         int rx_ring_start = tx_ring_start + tx_ring_len;
 111         int rx_ring_len =  rx_ring_info ?
 112                 RTE_CACHE_LINE_ROUNDUP(rx_ring_info->rx_ring_struct->ring_size *
 113                 sizeof(struct rx_prod_pkt_bd)) : 0;
 114
 115         int ag_ring_start = rx_ring_start + rx_ring_len;
 116         int ag_ring_len = rx_ring_len * AGG_RING_SIZE_FACTOR;
 117
 118         int ag_bitmap_start = ag_ring_start + ag_ring_len;
 119         int ag_bitmap_len =  rx_ring_info ?
 120                 RTE_CACHE_LINE_ROUNDUP(rte_bitmap_get_memory_footprint(
 121                         rx_ring_info->rx_ring_struct->ring_size *
 122                         AGG_RING_SIZE_FACTOR)) : 0;
 123
 124         int tpa_info_start = ag_bitmap_start + ag_bitmap_len;
 125         int tpa_info_len = rx_ring_info ?
 126                 RTE_CACHE_LINE_ROUNDUP(BNXT_TPA_MAX *
 127                                        sizeof(struct bnxt_tpa_info)) : 0;
 128
 129         int total_alloc_len = tpa_info_start;
 130         if (bp->eth_dev->data->dev_conf.rxmode.enable_lro)
 131                 total_alloc_len += tpa_info_len;
 132
 133         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 134                  "bnxt_%04x:%02x:%02x:%02x-%04x_%s", pdev->addr.domain,
 135                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function, qidx,
 136                  suffix);
 137         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 138         mz = rte_memzone_lookup(mz_name);
 139         if (!mz) {
 140                 mz = rte_memzone_reserve_aligned(mz_name, total_alloc_len,
 141                                 SOCKET_ID_ANY,
 142                                 RTE_MEMZONE_2MB |
 143                                 RTE_MEMZONE_SIZE_HINT_ONLY |
 144                                 RTE_MEMZONE_IOVA_CONTIG,
 145                                 getpagesize());
 146                 if (mz == NULL)
 147                         return -ENOMEM;
 148         }
 149         memset(mz->addr, 0, mz->len);
 150         mz_phys_addr = mz->iova;
 151         if ((unsigned long)mz->addr == mz_phys_addr) {
 152                 PMD_DRV_LOG(WARNING,
 153                         "Memzone physical address same as virtual.\n");
 154                 PMD_DRV_LOG(WARNING,
 155                         "Using rte_mem_virt2iova()\n");
 156                 for (sz = 0; sz < total_alloc_len; sz += getpagesize())
 157                         rte_mem_lock_page(((char *)mz->addr) + sz);
 158                 mz_phys_addr = rte_mem_virt2iova(mz->addr);
 159                 if (mz_phys_addr == 0) {
 160                         PMD_DRV_LOG(ERR,
 161                         "unable to map ring address to physical memory\n");
 162                         return -ENOMEM;
 163                 }
 164         }
 165
 166         if (tx_ring_info) {
 167                 tx_ring = tx_ring_info->tx_ring_struct;
 168
 169                 tx_ring->bd = ((char *)mz->addr + tx_ring_start);
 170                 tx_ring_info->tx_desc_ring = (struct tx_bd_long *)tx_ring->bd;
 171                 tx_ring->bd_dma = mz_phys_addr + tx_ring_start;
 172                 tx_ring_info->tx_desc_mapping = tx_ring->bd_dma;
 173                 tx_ring->mem_zone = (const void *)mz;
 174
 175                 if (!tx_ring->bd)
 176                         return -ENOMEM;
 177                 if (tx_ring->vmem_size) {
 178                         tx_ring->vmem =
 179                             (void **)((char *)mz->addr + tx_vmem_start);
 180                         tx_ring_info->tx_buf_ring =
 181                             (struct bnxt_sw_tx_bd *)tx_ring->vmem;
 182                 }
 183         }
 184
 185         if (rx_ring_info) {
 186                 rx_ring = rx_ring_info->rx_ring_struct;
 187
 188                 rx_ring->bd = ((char *)mz->addr + rx_ring_start);
 189                 rx_ring_info->rx_desc_ring =
 190                     (struct rx_prod_pkt_bd *)rx_ring->bd;
 191                 rx_ring->bd_dma = mz_phys_addr + rx_ring_start;
 192                 rx_ring_info->rx_desc_mapping = rx_ring->bd_dma;
 193                 rx_ring->mem_zone = (const void *)mz;
 194
 195                 if (!rx_ring->bd)
 196                         return -ENOMEM;
 197                 if (rx_ring->vmem_size) {
 198                         rx_ring->vmem =
 199                             (void **)((char *)mz->addr + rx_vmem_start);
 200                         rx_ring_info->rx_buf_ring =
 201                             (struct bnxt_sw_rx_bd *)rx_ring->vmem;
 202                 }
 203
 204                 rx_ring = rx_ring_info->ag_ring_struct;
 205
 206                 rx_ring->bd = ((char *)mz->addr + ag_ring_start);
 207                 rx_ring_info->ag_desc_ring =
 208                     (struct rx_prod_pkt_bd *)rx_ring->bd;
 209                 rx_ring->bd_dma = mz->iova + ag_ring_start;
 210                 rx_ring_info->ag_desc_mapping = rx_ring->bd_dma;
 211                 rx_ring->mem_zone = (const void *)mz;
 212
 213                 if (!rx_ring->bd)
 214                         return -ENOMEM;
 215                 if (rx_ring->vmem_size) {
 216                         rx_ring->vmem =
 217                             (void **)((char *)mz->addr + ag_vmem_start);
 218                         rx_ring_info->ag_buf_ring =
 219                             (struct bnxt_sw_rx_bd *)rx_ring->vmem;
 220                 }
 221
 222                 rx_ring_info->ag_bitmap =
 223                     rte_bitmap_init(rx_ring_info->rx_ring_struct->ring_size *
 224                                     AGG_RING_SIZE_FACTOR, (uint8_t *)mz->addr +
 225                                     ag_bitmap_start, ag_bitmap_len);
 226
 227                 /* TPA info */
 228                 if (bp->eth_dev->data->dev_conf.rxmode.enable_lro)
 229                         rx_ring_info->tpa_info =
 230                                 ((struct bnxt_tpa_info *)((char *)mz->addr +
 231                                                           tpa_info_start));
 232         }
 233
 234         cp_ring->bd = ((char *)mz->addr + cp_ring_start);
 235         cp_ring->bd_dma = mz_phys_addr + cp_ring_start;
 236         cp_ring_info->cp_desc_ring = cp_ring->bd;
 237         cp_ring_info->cp_desc_mapping = cp_ring->bd_dma;
 238         cp_ring->mem_zone = (const void *)mz;
 239
 240         if (!cp_ring->bd)
 241                 return -ENOMEM;
 242         if (cp_ring->vmem_size)
 243                 *cp_ring->vmem = ((char *)mz->addr + stats_len);
 244         if (stats_len) {
 245                 cp_ring_info->hw_stats = mz->addr;
 246                 cp_ring_info->hw_stats_map = mz_phys_addr;
 247         }
 248         cp_ring_info->hw_stats_ctx_id = HWRM_NA_SIGNATURE;
 249         return 0;
 250 }
 251
 252 /* ring_grp usage:
 253  * [0] = default completion ring
 254  * [1 -> +rx_cp_nr_rings] = rx_cp, rx rings
 255  * [1+rx_cp_nr_rings + 1 -> +tx_cp_nr_rings] = tx_cp, tx rings
 256  */
 257 int bnxt_alloc_hwrm_rings(struct bnxt *bp)
 258 {
 259         struct rte_pci_device *pci_dev = bp->pdev;
 260         unsigned int i;
 261         int rc = 0;
 262
 263         for (i = 0; i < bp->rx_cp_nr_rings; i++) {
 264                 struct bnxt_rx_queue *rxq = bp->rx_queues[i];
 265                 struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 266                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 267                 struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 268                 struct bnxt_ring *ring = rxr->rx_ring_struct;
 269                 unsigned int idx = i + 1;
 270                 unsigned int map_idx = idx + bp->rx_cp_nr_rings;
 271
 272                 bp->grp_info[i].fw_stats_ctx = cpr->hw_stats_ctx_id;
 273
 274                 /* Rx cmpl */
 275                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 276                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_L2_CMPL,
 277                                         idx, HWRM_NA_SIGNATURE,
 278                                         HWRM_NA_SIGNATURE);
 279                 if (rc)
 280                         goto err_out;
 281                 cpr->cp_doorbell = (char *)pci_dev->mem_resource[2].addr +
 282                     idx * 0x80;
 283                 bp->grp_info[i].cp_fw_ring_id = cp_ring->fw_ring_id;
 284                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 285
 286                 /* Rx ring */
 287                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 288                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
 289                                         idx, cpr->hw_stats_ctx_id,
 290                                         cp_ring->fw_ring_id);
 291                 if (rc)
 292                         goto err_out;
 293                 rxr->rx_prod = 0;
 294                 rxr->rx_doorbell = (char *)pci_dev->mem_resource[2].addr +
 295                     idx * 0x80;
 296                 bp->grp_info[i].rx_fw_ring_id = ring->fw_ring_id;
 297                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 298
 299                 ring = rxr->ag_ring_struct;
 300                 /* Agg ring */
 301                 if (ring == NULL) {
 302                         PMD_DRV_LOG(ERR, "Alloc AGG Ring is NULL!\n");
 303                         goto err_out;
 304                 }
 305
 306                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 307                                 HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
 308                                 map_idx, HWRM_NA_SIGNATURE,
 309                                 cp_ring->fw_ring_id);
 310                 if (rc)
 311                         goto err_out;
 312                 PMD_DRV_LOG(DEBUG, "Alloc AGG Done!\n");
 313                 rxr->ag_prod = 0;
 314                 rxr->ag_doorbell =
 315                     (char *)pci_dev->mem_resource[2].addr +
 316                     map_idx * 0x80;
 317                 bp->grp_info[i].ag_fw_ring_id = ring->fw_ring_id;
 318                 B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 319
 320                 rxq->rx_buf_use_size = BNXT_MAX_MTU + ETHER_HDR_LEN +
 321                                         ETHER_CRC_LEN + (2 * VLAN_TAG_SIZE);
 322                 if (bnxt_init_one_rx_ring(rxq)) {
 323                         PMD_DRV_LOG(ERR, "bnxt_init_one_rx_ring failed!\n");
 324                         bnxt_rx_queue_release_op(rxq);
 325                         return -ENOMEM;
 326                 }
 327                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 328                 B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 329                 rxq->index = idx;
 330         }
 331
 332         for (i = 0; i < bp->tx_cp_nr_rings; i++) {
 333                 struct bnxt_tx_queue *txq = bp->tx_queues[i];
 334                 struct bnxt_cp_ring_info *cpr = txq->cp_ring;
 335                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 336                 struct bnxt_tx_ring_info *txr = txq->tx_ring;
 337                 struct bnxt_ring *ring = txr->tx_ring_struct;
 338                 unsigned int idx = i + 1 + bp->rx_cp_nr_rings;
 339
 340                 /* Tx cmpl */
 341                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 342                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_L2_CMPL,
 343                                         idx, HWRM_NA_SIGNATURE,
 344                                         HWRM_NA_SIGNATURE);
 345                 if (rc)
 346                         goto err_out;
 347
 348                 cpr->cp_doorbell = (char *)pci_dev->mem_resource[2].addr +
 349                     idx * 0x80;
 350                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 351
 352                 /* Tx ring */
 353                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 354                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_TX,
 355                                         idx, cpr->hw_stats_ctx_id,
 356                                         cp_ring->fw_ring_id);
 357                 if (rc)
 358                         goto err_out;
 359
 360                 txr->tx_doorbell = (char *)pci_dev->mem_resource[2].addr +
 361                     idx * 0x80;
 362                 txq->index = idx;
 363         }
 364
 365 err_out:
 366         return rc;
 367 }