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 #include <rte_ethdev.h>
  51
  52 #include <fslmc_logs.h>
  53 #include <mc/fsl_dpbp.h>
  54 #include <portal/dpaa2_hw_pvt.h>
  55 #include <portal/dpaa2_hw_dpio.h>
  56 #include "dpaa2_hw_mempool.h"
  57
  58 struct dpaa2_bp_info rte_dpaa2_bpid_info[MAX_BPID];
  59 static struct dpaa2_bp_list *h_bp_list;
  60
  61 static int
  62 rte_hw_mbuf_create_pool(struct rte_mempool *mp)
  63 {
  64         struct dpaa2_bp_list *bp_list;
  65         struct dpaa2_dpbp_dev *avail_dpbp;
  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         mp->pool_data = (void *)&rte_dpaa2_bpid_info[bpid];
 131
 132         PMD_INIT_LOG(DEBUG, "BP List created for bpid =%d", dpbp_attr.bpid);
 133
 134         h_bp_list = bp_list;
 135         return 0;
 136 }
 137
 138 static void
 139 rte_hw_mbuf_free_pool(struct rte_mempool *mp)
 140 {
 141         struct dpaa2_bp_info *bpinfo;
 142         struct dpaa2_bp_list *bp;
 143         struct dpaa2_dpbp_dev *dpbp_node;
 144
 145         if (!mp->pool_data) {
 146                 PMD_DRV_LOG(ERR, "Not a valid dpaa22 pool");
 147                 return;
 148         }
 149
 150         bpinfo = (struct dpaa2_bp_info *)mp->pool_data;
 151         bp = bpinfo->bp_list;
 152         dpbp_node = bp->buf_pool.dpbp_node;
 153
 154         dpbp_disable(&(dpbp_node->dpbp), CMD_PRI_LOW, dpbp_node->token);
 155
 156         if (h_bp_list == bp) {
 157                 h_bp_list = h_bp_list->next;
 158         } else { /* if it is not the first node */
 159                 struct dpaa2_bp_list *prev = h_bp_list, *temp;
 160                 temp = h_bp_list->next;
 161                 while (temp) {
 162                         if (temp == bp) {
 163                                 prev->next = temp->next;
 164                                 free(bp);
 165                                 break;
 166                         }
 167                         prev = temp;
 168                         temp = temp->next;
 169                 }
 170         }
 171
 172         dpaa2_free_dpbp_dev(dpbp_node);
 173 }
 174
 175 static void
 176 rte_dpaa2_mbuf_release(struct rte_mempool *pool __rte_unused,
 177                         void * const *obj_table,
 178                         uint32_t bpid,
 179                         uint32_t meta_data_size,
 180                         int count)
 181 {
 182         struct qbman_release_desc releasedesc;
 183         struct qbman_swp *swp;
 184         int ret;
 185         int i, n;
 186         uint64_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 187
 188         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 189                 ret = dpaa2_affine_qbman_swp();
 190                 if (ret != 0) {
 191                         RTE_LOG(ERR, PMD, "Failed to allocate IO portal\n");
 192                         return;
 193                 }
 194         }
 195         swp = DPAA2_PER_LCORE_PORTAL;
 196
 197         /* Create a release descriptor required for releasing
 198          * buffers into QBMAN
 199          */
 200         qbman_release_desc_clear(&releasedesc);
 201         qbman_release_desc_set_bpid(&releasedesc, bpid);
 202
 203         n = count % DPAA2_MBUF_MAX_ACQ_REL;
 204         if (unlikely(!n))
 205                 goto aligned;
 206
 207         /* convert mbuf to buffers for the remainder */
 208         for (i = 0; i < n ; i++) {
 209 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 210                 bufs[i] = (uint64_t)rte_mempool_virt2phy(pool, obj_table[i])
 211                                 + meta_data_size;
 212 #else
 213                 bufs[i] = (uint64_t)obj_table[i] + meta_data_size;
 214 #endif
 215         }
 216
 217         /* feed them to bman */
 218         do {
 219                 ret = qbman_swp_release(swp, &releasedesc, bufs, n);
 220         } while (ret == -EBUSY);
 221
 222 aligned:
 223         /* if there are more buffers to free */
 224         while (n < count) {
 225                 /* convert mbuf to buffers */
 226                 for (i = 0; i < DPAA2_MBUF_MAX_ACQ_REL; i++) {
 227 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 228                         bufs[i] = (uint64_t)
 229                                   rte_mempool_virt2phy(pool, obj_table[n + i])
 230                                   + meta_data_size;
 231 #else
 232                         bufs[i] = (uint64_t)obj_table[n + i] + meta_data_size;
 233 #endif
 234                 }
 235
 236                 do {
 237                         ret = qbman_swp_release(swp, &releasedesc, bufs,
 238                                                 DPAA2_MBUF_MAX_ACQ_REL);
 239                 } while (ret == -EBUSY);
 240                 n += DPAA2_MBUF_MAX_ACQ_REL;
 241         }
 242 }
 243
 244 int
 245 rte_dpaa2_mbuf_alloc_bulk(struct rte_mempool *pool,
 246                           void **obj_table, unsigned int count)
 247 {
 248 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 249         static int alloc;
 250 #endif
 251         struct qbman_swp *swp;
 252         uint16_t bpid;
 253         uint64_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 254         int i, ret;
 255         unsigned int n = 0;
 256         struct dpaa2_bp_info *bp_info;
 257
 258         bp_info = mempool_to_bpinfo(pool);
 259
 260         if (!(bp_info->bp_list)) {
 261                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 262                 return -ENOENT;
 263         }
 264
 265         bpid = bp_info->bpid;
 266
 267         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 268                 ret = dpaa2_affine_qbman_swp();
 269                 if (ret != 0) {
 270                         RTE_LOG(ERR, PMD, "Failed to allocate IO portal\n");
 271                         return ret;
 272                 }
 273         }
 274         swp = DPAA2_PER_LCORE_PORTAL;
 275
 276         while (n < count) {
 277                 /* Acquire is all-or-nothing, so we drain in 7s,
 278                  * then the remainder.
 279                  */
 280                 if ((count - n) > DPAA2_MBUF_MAX_ACQ_REL) {
 281                         ret = qbman_swp_acquire(swp, bpid, bufs,
 282                                                 DPAA2_MBUF_MAX_ACQ_REL);
 283                 } else {
 284                         ret = qbman_swp_acquire(swp, bpid, bufs,
 285                                                 count - n);
 286                 }
 287                 /* In case of less than requested number of buffers available
 288                  * in pool, qbman_swp_acquire returns 0
 289                  */
 290                 if (ret <= 0) {
 291                         PMD_TX_LOG(ERR, "Buffer acquire failed with"
 292                                    " err code: %d", ret);
 293                         /* The API expect the exact number of requested bufs */
 294                         /* Releasing all buffers allocated */
 295                         rte_dpaa2_mbuf_release(pool, obj_table, bpid,
 296                                            bp_info->meta_data_size, n);
 297                         return ret;
 298                 }
 299                 /* assigning mbuf from the acquired objects */
 300                 for (i = 0; (i < ret) && bufs[i]; i++) {
 301                         DPAA2_MODIFY_IOVA_TO_VADDR(bufs[i], uint64_t);
 302                         obj_table[n] = (struct rte_mbuf *)
 303                                        (bufs[i] - bp_info->meta_data_size);
 304                         PMD_TX_LOG(DEBUG, "Acquired %p address %p from BMAN",
 305                                    (void *)bufs[i], (void *)obj_table[n]);
 306                         n++;
 307                 }
 308         }
 309
 310 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 311         alloc += n;
 312         PMD_TX_LOG(DEBUG, "Total = %d , req = %d done = %d",
 313                    alloc, count, n);
 314 #endif
 315         return 0;
 316 }
 317
 318 static int
 319 rte_hw_mbuf_free_bulk(struct rte_mempool *pool,
 320                   void * const *obj_table, unsigned int n)
 321 {
 322         struct dpaa2_bp_info *bp_info;
 323
 324         bp_info = mempool_to_bpinfo(pool);
 325         if (!(bp_info->bp_list)) {
 326                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 327                 return -ENOENT;
 328         }
 329         rte_dpaa2_mbuf_release(pool, obj_table, bp_info->bpid,
 330                            bp_info->meta_data_size, n);
 331
 332         return 0;
 333 }
 334
 335 static unsigned int
 336 rte_hw_mbuf_get_count(const struct rte_mempool *mp)
 337 {
 338         int ret;
 339         unsigned int num_of_bufs = 0;
 340         struct dpaa2_bp_info *bp_info;
 341         struct dpaa2_dpbp_dev *dpbp_node;
 342
 343         if (!mp || !mp->pool_data) {
 344                 RTE_LOG(ERR, PMD, "Invalid mempool provided\n");
 345                 return 0;
 346         }
 347
 348         bp_info = (struct dpaa2_bp_info *)mp->pool_data;
 349         dpbp_node = bp_info->bp_list->buf_pool.dpbp_node;
 350
 351         ret = dpbp_get_num_free_bufs(&dpbp_node->dpbp, CMD_PRI_LOW,
 352                                      dpbp_node->token, &num_of_bufs);
 353         if (ret) {
 354                 RTE_LOG(ERR, PMD, "Unable to obtain free buf count (err=%d)\n",
 355                         ret);
 356                 return 0;
 357         }
 358
 359         RTE_LOG(DEBUG, PMD, "Free bufs = %u\n", num_of_bufs);
 360
 361         return num_of_bufs;
 362 }
 363
 364 struct rte_mempool_ops dpaa2_mpool_ops = {
 365         .name = "dpaa2",
 366         .alloc = rte_hw_mbuf_create_pool,
 367         .free = rte_hw_mbuf_free_pool,
 368         .enqueue = rte_hw_mbuf_free_bulk,
 369         .dequeue = rte_dpaa2_mbuf_alloc_bulk,
 370         .get_count = rte_hw_mbuf_get_count,
 371 };
 372
 373 MEMPOOL_REGISTER_OPS(dpaa2_mpool_ops);