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 #include <unistd.h>
  36
  37 #include "bnxt.h"
  38 #include "bnxt_cpr.h"
  39 #include "bnxt_hwrm.h"
  40 #include "bnxt_ring.h"
  41 #include "bnxt_rxq.h"
  42 #include "bnxt_rxr.h"
  43 #include "bnxt_txq.h"
  44 #include "bnxt_txr.h"
  45
  46 #include "hsi_struct_def_dpdk.h"
  47
  48 /*
  49  * Generic ring handling
  50  */
  51
  52 void bnxt_free_ring(struct bnxt_ring *ring)
  53 {
  54         if (ring->vmem_size && *ring->vmem) {
  55                 memset((char *)*ring->vmem, 0, ring->vmem_size);
  56                 *ring->vmem = NULL;
  57         }
  58         rte_memzone_free((const struct rte_memzone *)ring->mem_zone);
  59 }
  60
  61 /*
  62  * Ring groups
  63  */
  64
  65 void bnxt_init_ring_grps(struct bnxt *bp)
  66 {
  67         unsigned int i;
  68
  69         for (i = 0; i < bp->max_ring_grps; i++)
  70                 memset(&bp->grp_info[i], (uint8_t)HWRM_NA_SIGNATURE,
  71                        sizeof(struct bnxt_ring_grp_info));
  72 }
  73
  74 /*
  75  * Allocates a completion ring with vmem and stats optionally also allocating
  76  * a TX and/or RX ring.  Passing NULL as tx_ring_info and/or rx_ring_info
  77  * to not allocate them.
  78  *
  79  * Order in the allocation is:
  80  * stats - Always non-zero length
  81  * cp vmem - Always zero-length, supported for the bnxt_ring abstraction
  82  * tx vmem - Only non-zero length if tx_ring_info is not NULL
  83  * rx vmem - Only non-zero length if rx_ring_info is not NULL
  84  * cp bd ring - Always non-zero length
  85  * tx bd ring - Only non-zero length if tx_ring_info is not NULL
  86  * rx bd ring - Only non-zero length if rx_ring_info is not NULL
  87  */
  88 int bnxt_alloc_rings(struct bnxt *bp, uint16_t qidx,
  89                             struct bnxt_tx_ring_info *tx_ring_info,
  90                             struct bnxt_rx_ring_info *rx_ring_info,
  91                             struct bnxt_cp_ring_info *cp_ring_info,
  92                             const char *suffix)
  93 {
  94         struct bnxt_ring *cp_ring = cp_ring_info->cp_ring_struct;
  95         struct bnxt_ring *tx_ring;
  96         struct bnxt_ring *rx_ring;
  97         struct rte_pci_device *pdev = bp->pdev;
  98         const struct rte_memzone *mz = NULL;
  99         char mz_name[RTE_MEMZONE_NAMESIZE];
 100         phys_addr_t mz_phys_addr;
 101         int sz;
 102
 103         int stats_len = (tx_ring_info || rx_ring_info) ?
 104             RTE_CACHE_LINE_ROUNDUP(sizeof(struct ctx_hw_stats64)) : 0;
 105
 106         int cp_vmem_start = stats_len;
 107         int cp_vmem_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->vmem_size);
 108
 109         int tx_vmem_start = cp_vmem_start + cp_vmem_len;
 110         int tx_vmem_len =
 111             tx_ring_info ? RTE_CACHE_LINE_ROUNDUP(tx_ring_info->
 112                                                 tx_ring_struct->vmem_size) : 0;
 113
 114         int rx_vmem_start = tx_vmem_start + tx_vmem_len;
 115         int rx_vmem_len = rx_ring_info ?
 116                 RTE_CACHE_LINE_ROUNDUP(rx_ring_info->
 117                                                 rx_ring_struct->vmem_size) : 0;
 118         int ag_vmem_start = 0;
 119         int ag_vmem_len = 0;
 120         int cp_ring_start =  0;
 121
 122         ag_vmem_start = rx_vmem_start + rx_vmem_len;
 123         ag_vmem_len = rx_ring_info ? RTE_CACHE_LINE_ROUNDUP(
 124                                 rx_ring_info->ag_ring_struct->vmem_size) : 0;
 125         cp_ring_start = ag_vmem_start + ag_vmem_len;
 126
 127         int cp_ring_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->ring_size *
 128                                                  sizeof(struct cmpl_base));
 129
 130         int tx_ring_start = cp_ring_start + cp_ring_len;
 131         int tx_ring_len = tx_ring_info ?
 132             RTE_CACHE_LINE_ROUNDUP(tx_ring_info->tx_ring_struct->ring_size *
 133                                    sizeof(struct tx_bd_long)) : 0;
 134
 135         int rx_ring_start = tx_ring_start + tx_ring_len;
 136         int rx_ring_len =  rx_ring_info ?
 137                 RTE_CACHE_LINE_ROUNDUP(rx_ring_info->rx_ring_struct->ring_size *
 138                 sizeof(struct rx_prod_pkt_bd)) : 0;
 139
 140         int total_alloc_len = rx_ring_start + rx_ring_len;
 141         int ag_ring_start = 0;
 142
 143         ag_ring_start = rx_ring_start + rx_ring_len;
 144         total_alloc_len = ag_ring_start + rx_ring_len * AGG_RING_SIZE_FACTOR;
 145
 146         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 147                  "bnxt_%04x:%02x:%02x:%02x-%04x_%s", pdev->addr.domain,
 148                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function, qidx,
 149                  suffix);
 150         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 151         mz = rte_memzone_lookup(mz_name);
 152         if (!mz) {
 153                 mz = rte_memzone_reserve_aligned(mz_name, total_alloc_len,
 154                                          SOCKET_ID_ANY,
 155                                          RTE_MEMZONE_2MB |
 156                                          RTE_MEMZONE_SIZE_HINT_ONLY,
 157                                          getpagesize());
 158                 if (mz == NULL)
 159                         return -ENOMEM;
 160         }
 161         memset(mz->addr, 0, mz->len);
 162         mz_phys_addr = mz->phys_addr;
 163         if ((unsigned long)mz->addr == mz_phys_addr) {
 164                 RTE_LOG(WARNING, PMD,
 165                         "Memzone physical address same as virtual.\n");
 166                 RTE_LOG(WARNING, PMD,
 167                         "Using rte_mem_virt2phy()\n");
 168                 for (sz = 0; sz < total_alloc_len; sz += getpagesize())
 169                         rte_mem_lock_page(((char *)mz->addr) + sz);
 170                 mz_phys_addr = rte_mem_virt2phy(mz->addr);
 171                 if (mz_phys_addr == 0) {
 172                         RTE_LOG(ERR, PMD,
 173                         "unable to map ring address to physical memory\n");
 174                         return -ENOMEM;
 175                 }
 176         }
 177
 178         if (tx_ring_info) {
 179                 tx_ring = tx_ring_info->tx_ring_struct;
 180
 181                 tx_ring->bd = ((char *)mz->addr + tx_ring_start);
 182                 tx_ring_info->tx_desc_ring = (struct tx_bd_long *)tx_ring->bd;
 183                 tx_ring->bd_dma = mz_phys_addr + tx_ring_start;
 184                 tx_ring_info->tx_desc_mapping = tx_ring->bd_dma;
 185                 tx_ring->mem_zone = (const void *)mz;
 186
 187                 if (!tx_ring->bd)
 188                         return -ENOMEM;
 189                 if (tx_ring->vmem_size) {
 190                         tx_ring->vmem =
 191                             (void **)((char *)mz->addr + tx_vmem_start);
 192                         tx_ring_info->tx_buf_ring =
 193                             (struct bnxt_sw_tx_bd *)tx_ring->vmem;
 194                 }
 195         }
 196
 197         if (rx_ring_info) {
 198                 rx_ring = rx_ring_info->rx_ring_struct;
 199
 200                 rx_ring->bd = ((char *)mz->addr + rx_ring_start);
 201                 rx_ring_info->rx_desc_ring =
 202                     (struct rx_prod_pkt_bd *)rx_ring->bd;
 203                 rx_ring->bd_dma = mz_phys_addr + rx_ring_start;
 204                 rx_ring_info->rx_desc_mapping = rx_ring->bd_dma;
 205                 rx_ring->mem_zone = (const void *)mz;
 206
 207                 if (!rx_ring->bd)
 208                         return -ENOMEM;
 209                 if (rx_ring->vmem_size) {
 210                         rx_ring->vmem =
 211                             (void **)((char *)mz->addr + rx_vmem_start);
 212                         rx_ring_info->rx_buf_ring =
 213                             (struct bnxt_sw_rx_bd *)rx_ring->vmem;
 214                 }
 215
 216                 rx_ring = rx_ring_info->ag_ring_struct;
 217
 218                 rx_ring->bd = ((char *)mz->addr + ag_ring_start);
 219                 rx_ring_info->ag_desc_ring =
 220                     (struct rx_prod_pkt_bd *)rx_ring->bd;
 221                 rx_ring->bd_dma = mz->phys_addr + ag_ring_start;
 222                 rx_ring_info->ag_desc_mapping = rx_ring->bd_dma;
 223                 rx_ring->mem_zone = (const void *)mz;
 224
 225                 if (!rx_ring->bd)
 226                         return -ENOMEM;
 227                 if (rx_ring->vmem_size) {
 228                         rx_ring->vmem =
 229                             (void **)((char *)mz->addr + ag_vmem_start);
 230                         rx_ring_info->ag_buf_ring =
 231                             (struct bnxt_sw_rx_bd *)rx_ring->vmem;
 232                 }
 233         }
 234
 235         cp_ring->bd = ((char *)mz->addr + cp_ring_start);
 236         cp_ring->bd_dma = mz_phys_addr + cp_ring_start;
 237         cp_ring_info->cp_desc_ring = cp_ring->bd;
 238         cp_ring_info->cp_desc_mapping = cp_ring->bd_dma;
 239         cp_ring->mem_zone = (const void *)mz;
 240
 241         if (!cp_ring->bd)
 242                 return -ENOMEM;
 243         if (cp_ring->vmem_size)
 244                 *cp_ring->vmem = ((char *)mz->addr + stats_len);
 245         if (stats_len) {
 246                 cp_ring_info->hw_stats = mz->addr;
 247                 cp_ring_info->hw_stats_map = mz_phys_addr;
 248         }
 249         cp_ring_info->hw_stats_ctx_id = HWRM_NA_SIGNATURE;
 250         return 0;
 251 }
 252
 253 /* ring_grp usage:
 254  * [0] = default completion ring
 255  * [1 -> +rx_cp_nr_rings] = rx_cp, rx rings
 256  * [1+rx_cp_nr_rings + 1 -> +tx_cp_nr_rings] = tx_cp, tx rings
 257  */
 258 int bnxt_alloc_hwrm_rings(struct bnxt *bp)
 259 {
 260         struct rte_pci_device *pci_dev = bp->pdev;
 261         unsigned int i;
 262         int rc = 0;
 263
 264         for (i = 0; i < bp->rx_cp_nr_rings; i++) {
 265                 struct bnxt_rx_queue *rxq = bp->rx_queues[i];
 266                 struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 267                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 268                 struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 269                 struct bnxt_ring *ring = rxr->rx_ring_struct;
 270                 unsigned int idx = i + 1;
 271                 unsigned int map_idx = idx + bp->rx_cp_nr_rings;
 272
 273                 bp->grp_info[i].fw_stats_ctx = cpr->hw_stats_ctx_id;
 274
 275                 /* Rx cmpl */
 276                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 277                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_L2_CMPL,
 278                                         idx, HWRM_NA_SIGNATURE,
 279                                         HWRM_NA_SIGNATURE);
 280                 if (rc)
 281                         goto err_out;
 282                 cpr->cp_doorbell = (char *)pci_dev->mem_resource[2].addr +
 283                     idx * 0x80;
 284                 bp->grp_info[i].cp_fw_ring_id = cp_ring->fw_ring_id;
 285                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 286
 287                 /* Rx ring */
 288                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 289                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
 290                                         idx, cpr->hw_stats_ctx_id,
 291                                         cp_ring->fw_ring_id);
 292                 if (rc)
 293                         goto err_out;
 294                 rxr->rx_prod = 0;
 295                 rxr->rx_doorbell = (char *)pci_dev->mem_resource[2].addr +
 296                     idx * 0x80;
 297                 bp->grp_info[i].rx_fw_ring_id = ring->fw_ring_id;
 298                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 299
 300                 ring = rxr->ag_ring_struct;
 301                 /* Agg ring */
 302                 if (ring == NULL)
 303                         RTE_LOG(ERR, PMD, "Alloc AGG Ring is NULL!\n");
 304
 305                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 306                                 HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
 307                                 map_idx, HWRM_NA_SIGNATURE,
 308                                 cp_ring->fw_ring_id);
 309                 if (rc)
 310                         goto err_out;
 311                 RTE_LOG(DEBUG, PMD, "Alloc AGG Done!\n");
 312                 rxr->ag_prod = 0;
 313                 rxr->ag_doorbell =
 314                     (char *)pci_dev->mem_resource[2].addr +
 315                     map_idx * 0x80;
 316                 bp->grp_info[i].ag_fw_ring_id = ring->fw_ring_id;
 317                 B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 318
 319                 rxq->rx_buf_use_size = BNXT_MAX_MTU + ETHER_HDR_LEN +
 320                                         ETHER_CRC_LEN + (2 * VLAN_TAG_SIZE);
 321                 if (bnxt_init_one_rx_ring(rxq)) {
 322                         RTE_LOG(ERR, PMD, "bnxt_init_one_rx_ring failed!\n");
 323                         bnxt_rx_queue_release_op(rxq);
 324                         return -ENOMEM;
 325                 }
 326                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 327                 B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 328                 rxq->index = idx;
 329         }
 330
 331         for (i = 0; i < bp->tx_cp_nr_rings; i++) {
 332                 struct bnxt_tx_queue *txq = bp->tx_queues[i];
 333                 struct bnxt_cp_ring_info *cpr = txq->cp_ring;
 334                 struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 335                 struct bnxt_tx_ring_info *txr = txq->tx_ring;
 336                 struct bnxt_ring *ring = txr->tx_ring_struct;
 337                 unsigned int idx = i + 1 + bp->rx_cp_nr_rings;
 338
 339                 /* Account for AGG Rings. AGG ring cnt = Rx Cmpl ring cnt */
 340                 idx += bp->rx_cp_nr_rings;
 341
 342                 /* Tx cmpl */
 343                 rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 344                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_L2_CMPL,
 345                                         idx, HWRM_NA_SIGNATURE,
 346                                         HWRM_NA_SIGNATURE);
 347                 if (rc)
 348                         goto err_out;
 349
 350                 cpr->cp_doorbell = (char *)pci_dev->mem_resource[2].addr +
 351                     idx * 0x80;
 352                 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 353
 354                 /* Tx ring */
 355                 rc = bnxt_hwrm_ring_alloc(bp, ring,
 356                                         HWRM_RING_ALLOC_INPUT_RING_TYPE_TX,
 357                                         idx, cpr->hw_stats_ctx_id,
 358                                         cp_ring->fw_ring_id);
 359                 if (rc)
 360                         goto err_out;
 361
 362                 txr->tx_doorbell = (char *)pci_dev->mem_resource[2].addr +
 363                     idx * 0x80;
 364                 txq->index = idx;
 365         }
 366
 367 err_out:
 368         return rc;
 369 }