drivers/mempool/dpaa2/dpaa2_hw_mempool.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (c) 2016 Freescale Semiconductor, Inc. All rights reserved.
   5  *   Copyright 2016 NXP.
   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 Freescale Semiconductor, Inc 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 <unistd.h>
  35 #include <stdio.h>
  36 #include <sys/types.h>
  37 #include <string.h>
  38 #include <stdlib.h>
  39 #include <fcntl.h>
  40 #include <errno.h>
  41
  42 #include <rte_mbuf.h>
  43 #include <rte_ethdev.h>
  44 #include <rte_malloc.h>
  45 #include <rte_memcpy.h>
  46 #include <rte_string_fns.h>
  47 #include <rte_cycles.h>
  48 #include <rte_kvargs.h>
  49 #include <rte_dev.h>
  50
  51 #include <fslmc_logs.h>
  52 #include <mc/fsl_dpbp.h>
  53 #include <portal/dpaa2_hw_pvt.h>
  54 #include <portal/dpaa2_hw_dpio.h>
  55 #include "dpaa2_hw_mempool.h"
  56
  57 struct dpaa2_bp_info rte_dpaa2_bpid_info[MAX_BPID];
  58 static struct dpaa2_bp_list *h_bp_list;
  59
  60 static int
  61 rte_hw_mbuf_create_pool(struct rte_mempool *mp)
  62 {
  63         struct dpaa2_bp_list *bp_list;
  64         struct dpaa2_dpbp_dev *avail_dpbp;
  65         struct dpaa2_bp_info *bp_info;
  66         struct dpbp_attr dpbp_attr;
  67         uint32_t bpid;
  68         int ret, p_ret;
  69
  70         avail_dpbp = dpaa2_alloc_dpbp_dev();
  71
  72         if (!avail_dpbp) {
  73                 PMD_DRV_LOG(ERR, "DPAA2 resources not available");
  74                 return -ENOENT;
  75         }
  76
  77         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
  78                 ret = dpaa2_affine_qbman_swp();
  79                 if (ret) {
  80                         RTE_LOG(ERR, PMD, "Failure in affining portal\n");
  81                         return ret;
  82                 }
  83         }
  84
  85         ret = dpbp_enable(&avail_dpbp->dpbp, CMD_PRI_LOW, avail_dpbp->token);
  86         if (ret != 0) {
  87                 PMD_INIT_LOG(ERR, "Resource enable failure with"
  88                         " err code: %d\n", ret);
  89                 return ret;
  90         }
  91
  92         ret = dpbp_get_attributes(&avail_dpbp->dpbp, CMD_PRI_LOW,
  93                                   avail_dpbp->token, &dpbp_attr);
  94         if (ret != 0) {
  95                 PMD_INIT_LOG(ERR, "Resource read failure with"
  96                              " err code: %d\n", ret);
  97                 p_ret = ret;
  98                 ret = dpbp_disable(&avail_dpbp->dpbp, CMD_PRI_LOW,
  99                                    avail_dpbp->token);
 100                 return p_ret;
 101         }
 102
 103         /* Allocate the bp_list which will be added into global_bp_list */
 104         bp_list = rte_malloc(NULL, sizeof(struct dpaa2_bp_list),
 105                              RTE_CACHE_LINE_SIZE);
 106         if (!bp_list) {
 107                 PMD_INIT_LOG(ERR, "No heap memory available");
 108                 return -ENOMEM;
 109         }
 110
 111         /* Set parameters of buffer pool list */
 112         bp_list->buf_pool.num_bufs = mp->size;
 113         bp_list->buf_pool.size = mp->elt_size
 114                         - sizeof(struct rte_mbuf) - rte_pktmbuf_priv_size(mp);
 115         bp_list->buf_pool.bpid = dpbp_attr.bpid;
 116         bp_list->buf_pool.h_bpool_mem = NULL;
 117         bp_list->buf_pool.dpbp_node = avail_dpbp;
 118         /* Identification for our offloaded pool_data structure */
 119         bp_list->dpaa2_ops_index = mp->ops_index;
 120         bp_list->next = h_bp_list;
 121         bp_list->mp = mp;
 122
 123         bpid = dpbp_attr.bpid;
 124
 125         rte_dpaa2_bpid_info[bpid].meta_data_size = sizeof(struct rte_mbuf)
 126                                 + rte_pktmbuf_priv_size(mp);
 127         rte_dpaa2_bpid_info[bpid].bp_list = bp_list;
 128         rte_dpaa2_bpid_info[bpid].bpid = bpid;
 129
 130         bp_info = rte_malloc(NULL,
 131                              sizeof(struct dpaa2_bp_info),
 132                              RTE_CACHE_LINE_SIZE);
 133         rte_memcpy(bp_info, (void *)&rte_dpaa2_bpid_info[bpid],
 134                    sizeof(struct dpaa2_bp_info));
 135         mp->pool_data = (void *)bp_info;
 136
 137         PMD_INIT_LOG(DEBUG, "BP List created for bpid =%d", dpbp_attr.bpid);
 138
 139         h_bp_list = bp_list;
 140         return 0;
 141 }
 142
 143 static void
 144 rte_hw_mbuf_free_pool(struct rte_mempool *mp)
 145 {
 146         struct dpaa2_bp_info *bpinfo;
 147         struct dpaa2_bp_list *bp;
 148         struct dpaa2_dpbp_dev *dpbp_node;
 149
 150         if (!mp->pool_data) {
 151                 PMD_DRV_LOG(ERR, "Not a valid dpaa22 pool");
 152                 return;
 153         }
 154
 155         bpinfo = (struct dpaa2_bp_info *)mp->pool_data;
 156         bp = bpinfo->bp_list;
 157         dpbp_node = bp->buf_pool.dpbp_node;
 158
 159         dpbp_disable(&(dpbp_node->dpbp), CMD_PRI_LOW, dpbp_node->token);
 160
 161         if (h_bp_list == bp) {
 162                 h_bp_list = h_bp_list->next;
 163         } else { /* if it is not the first node */
 164                 struct dpaa2_bp_list *prev = h_bp_list, *temp;
 165                 temp = h_bp_list->next;
 166                 while (temp) {
 167                         if (temp == bp) {
 168                                 prev->next = temp->next;
 169                                 rte_free(bp);
 170                                 break;
 171                         }
 172                         prev = temp;
 173                         temp = temp->next;
 174                 }
 175         }
 176
 177         rte_free(mp->pool_data);
 178         dpaa2_free_dpbp_dev(dpbp_node);
 179 }
 180
 181 static void
 182 rte_dpaa2_mbuf_release(struct rte_mempool *pool __rte_unused,
 183                         void * const *obj_table,
 184                         uint32_t bpid,
 185                         uint32_t meta_data_size,
 186                         int count)
 187 {
 188         struct qbman_release_desc releasedesc;
 189         struct qbman_swp *swp;
 190         int ret;
 191         int i, n;
 192         uint64_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 193
 194         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 195                 ret = dpaa2_affine_qbman_swp();
 196                 if (ret != 0) {
 197                         RTE_LOG(ERR, PMD, "Failed to allocate IO portal\n");
 198                         return;
 199                 }
 200         }
 201         swp = DPAA2_PER_LCORE_PORTAL;
 202
 203         /* Create a release descriptor required for releasing
 204          * buffers into QBMAN
 205          */
 206         qbman_release_desc_clear(&releasedesc);
 207         qbman_release_desc_set_bpid(&releasedesc, bpid);
 208
 209         n = count % DPAA2_MBUF_MAX_ACQ_REL;
 210         if (unlikely(!n))
 211                 goto aligned;
 212
 213         /* convert mbuf to buffers for the remainder */
 214         for (i = 0; i < n ; i++) {
 215 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 216                 bufs[i] = (uint64_t)rte_mempool_virt2phy(pool, obj_table[i])
 217                                 + meta_data_size;
 218 #else
 219                 bufs[i] = (uint64_t)obj_table[i] + meta_data_size;
 220 #endif
 221         }
 222
 223         /* feed them to bman */
 224         do {
 225                 ret = qbman_swp_release(swp, &releasedesc, bufs, n);
 226         } while (ret == -EBUSY);
 227
 228 aligned:
 229         /* if there are more buffers to free */
 230         while (n < count) {
 231                 /* convert mbuf to buffers */
 232                 for (i = 0; i < DPAA2_MBUF_MAX_ACQ_REL; i++) {
 233 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 234                         bufs[i] = (uint64_t)
 235                                   rte_mempool_virt2phy(pool, obj_table[n + i])
 236                                   + meta_data_size;
 237 #else
 238                         bufs[i] = (uint64_t)obj_table[n + i] + meta_data_size;
 239 #endif
 240                 }
 241
 242                 do {
 243                         ret = qbman_swp_release(swp, &releasedesc, bufs,
 244                                                 DPAA2_MBUF_MAX_ACQ_REL);
 245                 } while (ret == -EBUSY);
 246                 n += DPAA2_MBUF_MAX_ACQ_REL;
 247         }
 248 }
 249
 250 int
 251 rte_dpaa2_mbuf_alloc_bulk(struct rte_mempool *pool,
 252                           void **obj_table, unsigned int count)
 253 {
 254 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 255         static int alloc;
 256 #endif
 257         struct qbman_swp *swp;
 258         uint16_t bpid;
 259         uint64_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 260         int i, ret;
 261         unsigned int n = 0;
 262         struct dpaa2_bp_info *bp_info;
 263
 264         bp_info = mempool_to_bpinfo(pool);
 265
 266         if (!(bp_info->bp_list)) {
 267                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 268                 return -ENOENT;
 269         }
 270
 271         bpid = bp_info->bpid;
 272
 273         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 274                 ret = dpaa2_affine_qbman_swp();
 275                 if (ret != 0) {
 276                         RTE_LOG(ERR, PMD, "Failed to allocate IO portal\n");
 277                         return ret;
 278                 }
 279         }
 280         swp = DPAA2_PER_LCORE_PORTAL;
 281
 282         while (n < count) {
 283                 /* Acquire is all-or-nothing, so we drain in 7s,
 284                  * then the remainder.
 285                  */
 286                 if ((count - n) > DPAA2_MBUF_MAX_ACQ_REL) {
 287                         ret = qbman_swp_acquire(swp, bpid, bufs,
 288                                                 DPAA2_MBUF_MAX_ACQ_REL);
 289                 } else {
 290                         ret = qbman_swp_acquire(swp, bpid, bufs,
 291                                                 count - n);
 292                 }
 293                 /* In case of less than requested number of buffers available
 294                  * in pool, qbman_swp_acquire returns 0
 295                  */
 296                 if (ret <= 0) {
 297                         PMD_TX_LOG(ERR, "Buffer acquire failed with"
 298                                    " err code: %d", ret);
 299                         /* The API expect the exact number of requested bufs */
 300                         /* Releasing all buffers allocated */
 301                         rte_dpaa2_mbuf_release(pool, obj_table, bpid,
 302                                            bp_info->meta_data_size, n);
 303                         return -ENOBUFS;
 304                 }
 305                 /* assigning mbuf from the acquired objects */
 306                 for (i = 0; (i < ret) && bufs[i]; i++) {
 307                         DPAA2_MODIFY_IOVA_TO_VADDR(bufs[i], uint64_t);
 308                         obj_table[n] = (struct rte_mbuf *)
 309                                        (bufs[i] - bp_info->meta_data_size);
 310                         PMD_TX_LOG(DEBUG, "Acquired %p address %p from BMAN",
 311                                    (void *)bufs[i], (void *)obj_table[n]);
 312                         n++;
 313                 }
 314         }
 315
 316 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 317         alloc += n;
 318         PMD_TX_LOG(DEBUG, "Total = %d , req = %d done = %d",
 319                    alloc, count, n);
 320 #endif
 321         return 0;
 322 }
 323
 324 static int
 325 rte_hw_mbuf_free_bulk(struct rte_mempool *pool,
 326                   void * const *obj_table, unsigned int n)
 327 {
 328         struct dpaa2_bp_info *bp_info;
 329
 330         bp_info = mempool_to_bpinfo(pool);
 331         if (!(bp_info->bp_list)) {
 332                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 333                 return -ENOENT;
 334         }
 335         rte_dpaa2_mbuf_release(pool, obj_table, bp_info->bpid,
 336                            bp_info->meta_data_size, n);
 337
 338         return 0;
 339 }
 340
 341 static unsigned int
 342 rte_hw_mbuf_get_count(const struct rte_mempool *mp)
 343 {
 344         int ret;
 345         unsigned int num_of_bufs = 0;
 346         struct dpaa2_bp_info *bp_info;
 347         struct dpaa2_dpbp_dev *dpbp_node;
 348
 349         if (!mp || !mp->pool_data) {
 350                 RTE_LOG(ERR, PMD, "Invalid mempool provided\n");
 351                 return 0;
 352         }
 353
 354         bp_info = (struct dpaa2_bp_info *)mp->pool_data;
 355         dpbp_node = bp_info->bp_list->buf_pool.dpbp_node;
 356
 357         ret = dpbp_get_num_free_bufs(&dpbp_node->dpbp, CMD_PRI_LOW,
 358                                      dpbp_node->token, &num_of_bufs);
 359         if (ret) {
 360                 RTE_LOG(ERR, PMD, "Unable to obtain free buf count (err=%d)\n",
 361                         ret);
 362                 return 0;
 363         }
 364
 365         RTE_LOG(DEBUG, PMD, "Free bufs = %u\n", num_of_bufs);
 366
 367         return num_of_bufs;
 368 }
 369
 370 struct rte_mempool_ops dpaa2_mpool_ops = {
 371         .name = "dpaa2",
 372         .alloc = rte_hw_mbuf_create_pool,
 373         .free = rte_hw_mbuf_free_pool,
 374         .enqueue = rte_hw_mbuf_free_bulk,
 375         .dequeue = rte_dpaa2_mbuf_alloc_bulk,
 376         .get_count = rte_hw_mbuf_get_count,
 377 };
 378
 379 MEMPOOL_REGISTER_OPS(dpaa2_mpool_ops);