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_memzone.h>
  35
  36 #include "bnxt.h"
  37 #include "bnxt_cpr.h"
  38 #include "bnxt_hwrm.h"
  39 #include "bnxt_ring.h"
  40 #include "bnxt_rxq.h"
  41 #include "bnxt_rxr.h"
  42 #include "bnxt_txq.h"
  43 #include "bnxt_txr.h"
  44
  45 #include "hsi_struct_def_dpdk.h"
  46
  47 /*
  48  * Generic ring handling
  49  */
  50
  51 void bnxt_free_ring(struct bnxt_ring *ring)
  52 {
  53         if (ring->vmem_size && *ring->vmem) {
  54                 memset((char *)*ring->vmem, 0, ring->vmem_size);
  55                 *ring->vmem = NULL;
  56         }
  57         ring->mem_zone = NULL;
  58 }
  59
  60 /*
  61  * Ring groups
  62  */
  63
  64 int bnxt_init_ring_grps(struct bnxt *bp)
  65 {
  66         unsigned int i;
  67
  68         //One slot is still consumed by Default ring.
  69         if (bp->max_ring_grps < 1 + bp->rx_cp_nr_rings)
  70                 return -ENOMEM;
  71
  72         for (i = 0; i < bp->max_ring_grps; i++)
  73                 memset(&bp->grp_info[i], (uint8_t)HWRM_NA_SIGNATURE,
  74                        sizeof(struct bnxt_ring_grp_info));
  75
  76         return 0;
  77 }
  78
  79 /*
  80  * Allocates a completion ring with vmem and stats optionally also allocating
  81  * a TX and/or RX ring.  Passing NULL as tx_ring_info and/or rx_ring_info
  82  * to not allocate them.
  83  *
  84  * Order in the allocation is:
  85  * stats - Always non-zero length
  86  * cp vmem - Always zero-length, supported for the bnxt_ring abstraction
  87  * tx vmem - Only non-zero length if tx_ring_info is not NULL
  88  * rx vmem - Only non-zero length if rx_ring_info is not NULL
  89  * cp bd ring - Always non-zero length
  90  * tx bd ring - Only non-zero length if tx_ring_info is not NULL
  91  * rx bd ring - Only non-zero length if rx_ring_info is not NULL
  92  */
  93 int bnxt_alloc_rings(struct bnxt *bp, uint16_t qidx,
  94                             struct bnxt_tx_queue *txq,
  95                             struct bnxt_rx_queue *rxq,
  96                             struct bnxt_cp_ring_info *cp_ring_info,
  97                             const char *suffix)
  98 {
  99         struct bnxt_ring *cp_ring = cp_ring_info->cp_ring_struct;
 100         struct bnxt_rx_ring_info *rx_ring_info = rxq ? rxq->rx_ring : NULL;
 101         struct bnxt_tx_ring_info *tx_ring_info = txq ? txq->tx_ring : NULL;
 102         struct bnxt_ring *tx_ring;
 103         struct bnxt_ring *rx_ring;
 104         struct rte_pci_device *pdev = bp->pdev;
 105         const struct rte_memzone *mz = NULL;
 106         char mz_name[RTE_MEMZONE_NAMESIZE];
 107
 108         int stats_len = (tx_ring_info || rx_ring_info) ?
 109             RTE_CACHE_LINE_ROUNDUP(sizeof(struct ctx_hw_stats64)) : 0;
 110
 111         int cp_vmem_start = stats_len;
 112         int cp_vmem_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->vmem_size);
 113
 114         int tx_vmem_start = cp_vmem_start + cp_vmem_len;
 115         int tx_vmem_len =
 116             tx_ring_info ? RTE_CACHE_LINE_ROUNDUP(tx_ring_info->
 117                                                 tx_ring_struct->vmem_size) : 0;
 118
 119         int rx_vmem_start = tx_vmem_start + tx_vmem_len;
 120         int rx_vmem_len = rx_ring_info ?
 121                 RTE_CACHE_LINE_ROUNDUP(rx_ring_info->
 122                                                 rx_ring_struct->vmem_size) : 0;
 123
 124         int cp_ring_start = rx_vmem_start + rx_vmem_len;
 125         int cp_ring_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->ring_size *
 126                                                  sizeof(struct cmpl_base));
 127
 128         int tx_ring_start = cp_ring_start + cp_ring_len;
 129         int tx_ring_len = tx_ring_info ?
 130             RTE_CACHE_LINE_ROUNDUP(tx_ring_info->tx_ring_struct->ring_size *
 131                                    sizeof(struct tx_bd_long)) : 0;
 132
 133         int rx_ring_start = tx_ring_start + tx_ring_len;
 134         int rx_ring_len =  rx_ring_info ?
 135                 RTE_CACHE_LINE_ROUNDUP(rx_ring_info->rx_ring_struct->ring_size *
 136                 sizeof(struct rx_prod_pkt_bd)) : 0;
 137
 138         int total_alloc_len = rx_ring_start + rx_ring_len;
 139
 140         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 141                  "bnxt_%04x:%02x:%02x:%02x-%04x_%s", pdev->addr.domain,
 142                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function, qidx,
 143                  suffix);
 144         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 145         mz = rte_memzone_lookup(mz_name);
 146         if (!mz) {
 147                 mz = rte_memzone_reserve(mz_name, total_alloc_len,
 148                                          SOCKET_ID_ANY,
 149                                          RTE_MEMZONE_2MB |
 150                                          RTE_MEMZONE_SIZE_HINT_ONLY);
 151                 if (mz == NULL)
 152                         return -ENOMEM;
 153         }
 154         memset(mz->addr, 0, mz->len);
 155
 156         if (tx_ring_info) {
 157                 txq->mz = mz;
 158                 tx_ring = tx_ring_info->tx_ring_struct;
 159
 160                 tx_ring->bd = ((char *)mz->addr + tx_ring_start);
 161                 tx_ring_info->tx_desc_ring = (struct tx_bd_long *)tx_ring->bd;
 162                 tx_ring->bd_dma = mz->phys_addr + tx_ring_start;
 163                 tx_ring_info->tx_desc_mapping = tx_ring->bd_dma;
 164                 tx_ring->mem_zone = (const void *)mz;
 165
 166                 if (!tx_ring->bd)
 167                         return -ENOMEM;
 168                 if (tx_ring->vmem_size) {
 169                         tx_ring->vmem =
 170                             (void **)((char *)mz->addr + tx_vmem_start);
 171                         tx_ring_info->tx_buf_ring =
 172                             (struct bnxt_sw_tx_bd *)tx_ring->vmem;
 173                 }
 174         }
 175
 176         if (rx_ring_info) {
 177                 rxq->mz = mz;
 178                 rx_ring = rx_ring_info->rx_ring_struct;
 179
 180                 rx_ring->bd = ((char *)mz->addr + rx_ring_start);
 181                 rx_ring_info->rx_desc_ring =
 182                     (struct rx_prod_pkt_bd *)rx_ring->bd;
 183                 rx_ring->bd_dma = mz->phys_addr + rx_ring_start;
 184                 rx_ring_info->rx_desc_mapping = rx_ring->bd_dma;
 185                 rx_ring->mem_zone = (const void *)mz;
 186
 187                 if (!rx_ring->bd)
 188                         return -ENOMEM;
 189                 if (rx_ring->vmem_size) {
 190                         rx_ring->vmem =
 191                             (void **)((char *)mz->addr + rx_vmem_start);
 192                         rx_ring_info->rx_buf_ring =
 193                             (struct bnxt_sw_rx_bd *)rx_ring->vmem;
 194                 }
 195         }
 196
 197         cp_ring->bd = ((char *)mz->addr + cp_ring_start);
 198         cp_ring->bd_dma = mz->phys_addr + cp_ring_start;
 199         cp_ring_info->cp_desc_ring = cp_ring->bd;
 200         cp_ring_info->cp_desc_mapping = cp_ring->bd_dma;
 201         cp_ring->mem_zone = (const void *)mz;
 202
 203         if (!cp_ring->bd)
 204                 return -ENOMEM;
 205         if (cp_ring->vmem_size)
 206                 *cp_ring->vmem = ((char *)mz->addr + stats_len);
 207         if (stats_len) {
 208                 cp_ring_info->hw_stats = mz->addr;
 209                 cp_ring_info->hw_stats_map = mz->phys_addr;
 210         }
 211         cp_ring_info->hw_stats_ctx_id = HWRM_NA_SIGNATURE;
 212         return 0;
 213 }
 214
 215 /* ring_grp usage:
 216  * [0] = default completion ring
 217  * [1 -> +rx_cp_nr_rings] = rx_cp, rx rings
 218  * [1+rx_cp_nr_rings + 1 -> +tx_cp_nr_rings] = tx_cp, tx rings
 219  */
 220 int bnxt_alloc_hwrm_rings(struct bnxt *bp)
 221 {
 222         unsigned int i;
 223         int rc = 0;
 224
 225         /* Default completion ring */
 226         {
 227                 struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
 228                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 229
 230                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 231                                           HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
 232                                           0, HWRM_NA_SIGNATURE,
 233                                           HWRM_NA_SIGNATURE);
 234                 if (rc)
 235                         goto err_out;
 236                 cpr->cp_doorbell =
 237                     (char *)bp->eth_dev->pci_dev->mem_resource[2].addr;
 238                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 239                 bp->grp_info[0].cp_fw_ring_id = cp_ring->fw_ring_id;
 240         }
 241
 242         for (i = 0; i < bp->rx_cp_nr_rings; i++) {
 243                 struct bnxt_rx_queue *rxq = bp->rx_queues[i];
 244                 struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 245                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 246                 struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 247                 struct bnxt_ring *ring = rxr->rx_ring_struct;
 248                 unsigned int idx = i + 1;
 249
 250                 /* Rx cmpl */
 251                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 252                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
 253                                         idx, HWRM_NA_SIGNATURE,
 254                                         HWRM_NA_SIGNATURE);
 255                 if (rc)
 256                         goto err_out;
 257                 cpr->cp_doorbell =
 258                     (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
 259                     idx * 0x80;
 260                 bp->grp_info[idx].cp_fw_ring_id = cp_ring->fw_ring_id;
 261                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 262
 263                 /* Rx ring */
 264                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 265                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
 266                                         idx, cpr->hw_stats_ctx_id,
 267                                         cp_ring->fw_ring_id);
 268                 if (rc)
 269                         goto err_out;
 270                 rxr->rx_prod = 0;
 271                 rxr->rx_doorbell =
 272                     (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
 273                     idx * 0x80;
 274                 bp->grp_info[idx].rx_fw_ring_id = ring->fw_ring_id;
 275                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 276                 if (bnxt_init_one_rx_ring(rxq)) {
 277                         RTE_LOG(ERR, PMD, "bnxt_init_one_rx_ring failed!");
 278                         bnxt_rx_queue_release_op(rxq);
 279                         return -ENOMEM;
 280                 }
 281                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 282         }
 283
 284         for (i = 0; i < bp->tx_cp_nr_rings; i++) {
 285                 struct bnxt_tx_queue *txq = bp->tx_queues[i];
 286                 struct bnxt_cp_ring_info *cpr = txq->cp_ring;
 287                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 288                 struct bnxt_tx_ring_info *txr = txq->tx_ring;
 289                 struct bnxt_ring *ring = txr->tx_ring_struct;
 290                 unsigned int idx = 1 + bp->rx_cp_nr_rings + i;
 291
 292                 /* Tx cmpl */
 293                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 294                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
 295                                         idx, HWRM_NA_SIGNATURE,
 296                                         HWRM_NA_SIGNATURE);
 297                 if (rc)
 298                         goto err_out;
 299
 300                 cpr->cp_doorbell =
 301                     (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
 302                     idx * 0x80;
 303                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 304
 305                 /* Tx ring */
 306                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 307                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_TX,
 308                                         idx, cpr->hw_stats_ctx_id,
 309                                         cp_ring->fw_ring_id);
 310                 if (rc)
 311                         goto err_out;
 312
 313                 txr->tx_doorbell =
 314                     (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
 315                     idx * 0x80;
 316         }
 317
 318 err_out:
 319         return rc;
 320 }