drivers/net/bnxt/bnxt_ring.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) Broadcom Limited.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Broadcom Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <rte_bitmap.h>
  35 #include <rte_memzone.h>
  36 #include <unistd.h>
  37
  38 #include "bnxt.h"
  39 #include "bnxt_cpr.h"
  40 #include "bnxt_hwrm.h"
  41 #include "bnxt_ring.h"
  42 #include "bnxt_rxq.h"
  43 #include "bnxt_rxr.h"
  44 #include "bnxt_txq.h"
  45 #include "bnxt_txr.h"
  46
  47 #include "hsi_struct_def_dpdk.h"
  48
  49 /*
  50  * Generic ring handling
  51  */
  52
  53 void bnxt_free_ring(struct bnxt_ring *ring)
  54 {
  55         if (ring->vmem_size && *ring->vmem) {
  56                 memset((char *)*ring->vmem, 0, ring->vmem_size);
  57                 *ring->vmem = NULL;
  58         }
  59         rte_memzone_free((const struct rte_memzone *)ring->mem_zone);
  60 }
  61
  62 /*
  63  * Ring groups
  64  */
  65
  66 void bnxt_init_ring_grps(struct bnxt *bp)
  67 {
  68         unsigned int i;
  69
  70         for (i = 0; i < bp->max_ring_grps; i++)
  71                 memset(&bp->grp_info[i], (uint8_t)HWRM_NA_SIGNATURE,
  72                        sizeof(struct bnxt_ring_grp_info));
  73 }
  74
  75 /*
  76  * Allocates a completion ring with vmem and stats optionally also allocating
  77  * a TX and/or RX ring.  Passing NULL as tx_ring_info and/or rx_ring_info
  78  * to not allocate them.
  79  *
  80  * Order in the allocation is:
  81  * stats - Always non-zero length
  82  * cp vmem - Always zero-length, supported for the bnxt_ring abstraction
  83  * tx vmem - Only non-zero length if tx_ring_info is not NULL
  84  * rx vmem - Only non-zero length if rx_ring_info is not NULL
  85  * cp bd ring - Always non-zero length
  86  * tx bd ring - Only non-zero length if tx_ring_info is not NULL
  87  * rx bd ring - Only non-zero length if rx_ring_info is not NULL
  88  */
  89 int bnxt_alloc_rings(struct bnxt *bp, uint16_t qidx,
  90                             struct bnxt_tx_ring_info *tx_ring_info,
  91                             struct bnxt_rx_ring_info *rx_ring_info,
  92                             struct bnxt_cp_ring_info *cp_ring_info,
  93                             const char *suffix)
  94 {
  95         struct bnxt_ring *cp_ring = cp_ring_info->cp_ring_struct;
  96         struct bnxt_ring *tx_ring;
  97         struct bnxt_ring *rx_ring;
  98         struct rte_pci_device *pdev = bp->pdev;
  99         const struct rte_memzone *mz = NULL;
 100         char mz_name[RTE_MEMZONE_NAMESIZE];
 101         phys_addr_t mz_phys_addr;
 102         int sz;
 103
 104         int stats_len = (tx_ring_info || rx_ring_info) ?
 105             RTE_CACHE_LINE_ROUNDUP(sizeof(struct ctx_hw_stats64)) : 0;
 106
 107         int cp_vmem_start = stats_len;
 108         int cp_vmem_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->vmem_size);
 109
 110         int tx_vmem_start = cp_vmem_start + cp_vmem_len;
 111         int tx_vmem_len =
 112             tx_ring_info ? RTE_CACHE_LINE_ROUNDUP(tx_ring_info->
 113                                                 tx_ring_struct->vmem_size) : 0;
 114
 115         int rx_vmem_start = tx_vmem_start + tx_vmem_len;
 116         int rx_vmem_len = rx_ring_info ?
 117                 RTE_CACHE_LINE_ROUNDUP(rx_ring_info->
 118                                                 rx_ring_struct->vmem_size) : 0;
 119         int ag_vmem_start = 0;
 120         int ag_vmem_len = 0;
 121         int cp_ring_start =  0;
 122
 123         ag_vmem_start = rx_vmem_start + rx_vmem_len;
 124         ag_vmem_len = rx_ring_info ? RTE_CACHE_LINE_ROUNDUP(
 125                                 rx_ring_info->ag_ring_struct->vmem_size) : 0;
 126         cp_ring_start = ag_vmem_start + ag_vmem_len;
 127
 128         int cp_ring_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->ring_size *
 129                                                  sizeof(struct cmpl_base));
 130
 131         int tx_ring_start = cp_ring_start + cp_ring_len;
 132         int tx_ring_len = tx_ring_info ?
 133             RTE_CACHE_LINE_ROUNDUP(tx_ring_info->tx_ring_struct->ring_size *
 134                                    sizeof(struct tx_bd_long)) : 0;
 135
 136         int rx_ring_start = tx_ring_start + tx_ring_len;
 137         int rx_ring_len =  rx_ring_info ?
 138                 RTE_CACHE_LINE_ROUNDUP(rx_ring_info->rx_ring_struct->ring_size *
 139                 sizeof(struct rx_prod_pkt_bd)) : 0;
 140
 141         int ag_ring_start = rx_ring_start + rx_ring_len;
 142         int ag_ring_len = rx_ring_len * AGG_RING_SIZE_FACTOR;
 143
 144         int ag_bitmap_start = ag_ring_start + ag_ring_len;
 145         int ag_bitmap_len =  rx_ring_info ?
 146                 RTE_CACHE_LINE_ROUNDUP(rte_bitmap_get_memory_footprint(
 147                         rx_ring_info->rx_ring_struct->ring_size *
 148                         AGG_RING_SIZE_FACTOR)) : 0;
 149
 150         int tpa_info_start = ag_bitmap_start + ag_bitmap_len;
 151         int tpa_info_len = rx_ring_info ?
 152                 RTE_CACHE_LINE_ROUNDUP(BNXT_TPA_MAX *
 153                                        sizeof(struct bnxt_tpa_info)) : 0;
 154
 155         int total_alloc_len = tpa_info_start;
 156         if (bp->eth_dev->data->dev_conf.rxmode.enable_lro)
 157                 total_alloc_len += tpa_info_len;
 158
 159         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 160                  "bnxt_%04x:%02x:%02x:%02x-%04x_%s", pdev->addr.domain,
 161                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function, qidx,
 162                  suffix);
 163         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 164         mz = rte_memzone_lookup(mz_name);
 165         if (!mz) {
 166                 mz = rte_memzone_reserve_aligned(mz_name, total_alloc_len,
 167                                          SOCKET_ID_ANY,
 168                                          RTE_MEMZONE_2MB |
 169                                          RTE_MEMZONE_SIZE_HINT_ONLY,
 170                                          getpagesize());
 171                 if (mz == NULL)
 172                         return -ENOMEM;
 173         }
 174         memset(mz->addr, 0, mz->len);
 175         mz_phys_addr = mz->phys_addr;
 176         if ((unsigned long)mz->addr == mz_phys_addr) {
 177                 RTE_LOG(WARNING, PMD,
 178                         "Memzone physical address same as virtual.\n");
 179                 RTE_LOG(WARNING, PMD,
 180                         "Using rte_mem_virt2phy()\n");
 181                 for (sz = 0; sz < total_alloc_len; sz += getpagesize())
 182                         rte_mem_lock_page(((char *)mz->addr) + sz);
 183                 mz_phys_addr = rte_mem_virt2phy(mz->addr);
 184                 if (mz_phys_addr == 0) {
 185                         RTE_LOG(ERR, PMD,
 186                         "unable to map ring address to physical memory\n");
 187                         return -ENOMEM;
 188                 }
 189         }
 190
 191         if (tx_ring_info) {
 192                 tx_ring = tx_ring_info->tx_ring_struct;
 193
 194                 tx_ring->bd = ((char *)mz->addr + tx_ring_start);
 195                 tx_ring_info->tx_desc_ring = (struct tx_bd_long *)tx_ring->bd;
 196                 tx_ring->bd_dma = mz_phys_addr + tx_ring_start;
 197                 tx_ring_info->tx_desc_mapping = tx_ring->bd_dma;
 198                 tx_ring->mem_zone = (const void *)mz;
 199
 200                 if (!tx_ring->bd)
 201                         return -ENOMEM;
 202                 if (tx_ring->vmem_size) {
 203                         tx_ring->vmem =
 204                             (void **)((char *)mz->addr + tx_vmem_start);
 205                         tx_ring_info->tx_buf_ring =
 206                             (struct bnxt_sw_tx_bd *)tx_ring->vmem;
 207                 }
 208         }
 209
 210         if (rx_ring_info) {
 211                 rx_ring = rx_ring_info->rx_ring_struct;
 212
 213                 rx_ring->bd = ((char *)mz->addr + rx_ring_start);
 214                 rx_ring_info->rx_desc_ring =
 215                     (struct rx_prod_pkt_bd *)rx_ring->bd;
 216                 rx_ring->bd_dma = mz_phys_addr + rx_ring_start;
 217                 rx_ring_info->rx_desc_mapping = rx_ring->bd_dma;
 218                 rx_ring->mem_zone = (const void *)mz;
 219
 220                 if (!rx_ring->bd)
 221                         return -ENOMEM;
 222                 if (rx_ring->vmem_size) {
 223                         rx_ring->vmem =
 224                             (void **)((char *)mz->addr + rx_vmem_start);
 225                         rx_ring_info->rx_buf_ring =
 226                             (struct bnxt_sw_rx_bd *)rx_ring->vmem;
 227                 }
 228
 229                 rx_ring = rx_ring_info->ag_ring_struct;
 230
 231                 rx_ring->bd = ((char *)mz->addr + ag_ring_start);
 232                 rx_ring_info->ag_desc_ring =
 233                     (struct rx_prod_pkt_bd *)rx_ring->bd;
 234                 rx_ring->bd_dma = mz->phys_addr + ag_ring_start;
 235                 rx_ring_info->ag_desc_mapping = rx_ring->bd_dma;
 236                 rx_ring->mem_zone = (const void *)mz;
 237
 238                 if (!rx_ring->bd)
 239                         return -ENOMEM;
 240                 if (rx_ring->vmem_size) {
 241                         rx_ring->vmem =
 242                             (void **)((char *)mz->addr + ag_vmem_start);
 243                         rx_ring_info->ag_buf_ring =
 244                             (struct bnxt_sw_rx_bd *)rx_ring->vmem;
 245                 }
 246
 247                 rx_ring_info->ag_bitmap =
 248                     rte_bitmap_init(rx_ring_info->rx_ring_struct->ring_size *
 249                                     AGG_RING_SIZE_FACTOR, (uint8_t *)mz->addr +
 250                                     ag_bitmap_start, ag_bitmap_len);
 251
 252                 /* TPA info */
 253                 if (bp->eth_dev->data->dev_conf.rxmode.enable_lro)
 254                         rx_ring_info->tpa_info =
 255                                 ((struct bnxt_tpa_info *)((char *)mz->addr +
 256                                                           tpa_info_start));
 257         }
 258
 259         cp_ring->bd = ((char *)mz->addr + cp_ring_start);
 260         cp_ring->bd_dma = mz_phys_addr + cp_ring_start;
 261         cp_ring_info->cp_desc_ring = cp_ring->bd;
 262         cp_ring_info->cp_desc_mapping = cp_ring->bd_dma;
 263         cp_ring->mem_zone = (const void *)mz;
 264
 265         if (!cp_ring->bd)
 266                 return -ENOMEM;
 267         if (cp_ring->vmem_size)
 268                 *cp_ring->vmem = ((char *)mz->addr + stats_len);
 269         if (stats_len) {
 270                 cp_ring_info->hw_stats = mz->addr;
 271                 cp_ring_info->hw_stats_map = mz_phys_addr;
 272         }
 273         cp_ring_info->hw_stats_ctx_id = HWRM_NA_SIGNATURE;
 274         return 0;
 275 }
 276
 277 /* ring_grp usage:
 278  * [0] = default completion ring
 279  * [1 -> +rx_cp_nr_rings] = rx_cp, rx rings
 280  * [1+rx_cp_nr_rings + 1 -> +tx_cp_nr_rings] = tx_cp, tx rings
 281  */
 282 int bnxt_alloc_hwrm_rings(struct bnxt *bp)
 283 {
 284         struct rte_pci_device *pci_dev = bp->pdev;
 285         unsigned int i;
 286         int rc = 0;
 287
 288         for (i = 0; i < bp->rx_cp_nr_rings; i++) {
 289                 struct bnxt_rx_queue *rxq = bp->rx_queues[i];
 290                 struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 291                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 292                 struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 293                 struct bnxt_ring *ring = rxr->rx_ring_struct;
 294                 unsigned int idx = i + 1;
 295                 unsigned int map_idx = idx + bp->rx_cp_nr_rings;
 296
 297                 bp->grp_info[i].fw_stats_ctx = cpr->hw_stats_ctx_id;
 298
 299                 /* Rx cmpl */
 300                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 301                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_L2_CMPL,
 302                                         idx, HWRM_NA_SIGNATURE,
 303                                         HWRM_NA_SIGNATURE);
 304                 if (rc)
 305                         goto err_out;
 306                 cpr->cp_doorbell = (char *)pci_dev->mem_resource[2].addr +
 307                     idx * 0x80;
 308                 bp->grp_info[i].cp_fw_ring_id = cp_ring->fw_ring_id;
 309                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 310
 311                 /* Rx ring */
 312                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 313                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
 314                                         idx, cpr->hw_stats_ctx_id,
 315                                         cp_ring->fw_ring_id);
 316                 if (rc)
 317                         goto err_out;
 318                 rxr->rx_prod = 0;
 319                 rxr->rx_doorbell = (char *)pci_dev->mem_resource[2].addr +
 320                     idx * 0x80;
 321                 bp->grp_info[i].rx_fw_ring_id = ring->fw_ring_id;
 322                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 323
 324                 ring = rxr->ag_ring_struct;
 325                 /* Agg ring */
 326                 if (ring == NULL)
 327                         RTE_LOG(ERR, PMD, "Alloc AGG Ring is NULL!\n");
 328
 329                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 330                                 HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
 331                                 map_idx, HWRM_NA_SIGNATURE,
 332                                 cp_ring->fw_ring_id);
 333                 if (rc)
 334                         goto err_out;
 335                 RTE_LOG(DEBUG, PMD, "Alloc AGG Done!\n");
 336                 rxr->ag_prod = 0;
 337                 rxr->ag_doorbell =
 338                     (char *)pci_dev->mem_resource[2].addr +
 339                     map_idx * 0x80;
 340                 bp->grp_info[i].ag_fw_ring_id = ring->fw_ring_id;
 341                 B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 342
 343                 rxq->rx_buf_use_size = BNXT_MAX_MTU + ETHER_HDR_LEN +
 344                                         ETHER_CRC_LEN + (2 * VLAN_TAG_SIZE);
 345                 if (bnxt_init_one_rx_ring(rxq)) {
 346                         RTE_LOG(ERR, PMD, "bnxt_init_one_rx_ring failed!\n");
 347                         bnxt_rx_queue_release_op(rxq);
 348                         return -ENOMEM;
 349                 }
 350                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 351                 B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 352                 rxq->index = idx;
 353         }
 354
 355         for (i = 0; i < bp->tx_cp_nr_rings; i++) {
 356                 struct bnxt_tx_queue *txq = bp->tx_queues[i];
 357                 struct bnxt_cp_ring_info *cpr = txq->cp_ring;
 358                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 359                 struct bnxt_tx_ring_info *txr = txq->tx_ring;
 360                 struct bnxt_ring *ring = txr->tx_ring_struct;
 361                 unsigned int idx = i + 1 + bp->rx_cp_nr_rings;
 362
 363                 /* Account for AGG Rings. AGG ring cnt = Rx Cmpl ring cnt */
 364                 idx += bp->rx_cp_nr_rings;
 365
 366                 /* Tx cmpl */
 367                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 368                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_L2_CMPL,
 369                                         idx, HWRM_NA_SIGNATURE,
 370                                         HWRM_NA_SIGNATURE);
 371                 if (rc)
 372                         goto err_out;
 373
 374                 cpr->cp_doorbell = (char *)pci_dev->mem_resource[2].addr +
 375                     idx * 0x80;
 376                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 377
 378                 /* Tx ring */
 379                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 380                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_TX,
 381                                         idx, cpr->hw_stats_ctx_id,
 382                                         cp_ring->fw_ring_id);
 383                 if (rc)
 384                         goto err_out;
 385
 386                 txr->tx_doorbell = (char *)pci_dev->mem_resource[2].addr +
 387                     idx * 0x80;
 388                 txq->index = idx;
 389         }
 390
 391 err_out:
 392         return rc;
 393 }