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