drivers/mempool/dpaa2/dpaa2_hw_mempool.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright (c) 2016 Freescale Semiconductor, Inc. All rights reserved.
   4  *   Copyright 2016-2019 NXP
   5  *
   6  */
   7
   8 #include <unistd.h>
   9 #include <stdio.h>
  10 #include <sys/types.h>
  11 #include <string.h>
  12 #include <stdlib.h>
  13 #include <fcntl.h>
  14 #include <errno.h>
  15
  16 #include <rte_mbuf.h>
  17 #include <rte_ethdev_driver.h>
  18 #include <rte_malloc.h>
  19 #include <rte_memcpy.h>
  20 #include <rte_string_fns.h>
  21 #include <rte_cycles.h>
  22 #include <rte_kvargs.h>
  23 #include <rte_dev.h>
  24 #include "rte_dpaa2_mempool.h"
  25
  26 #include "fslmc_vfio.h"
  27 #include <fslmc_logs.h>
  28 #include <mc/fsl_dpbp.h>
  29 #include <portal/dpaa2_hw_pvt.h>
  30 #include <portal/dpaa2_hw_dpio.h>
  31 #include "dpaa2_hw_mempool.h"
  32 #include "dpaa2_hw_mempool_logs.h"
  33
  34 #include <dpaax_iova_table.h>
  35
  36 struct dpaa2_bp_info *rte_dpaa2_bpid_info;
  37 static struct dpaa2_bp_list *h_bp_list;
  38
  39 static int
  40 rte_hw_mbuf_create_pool(struct rte_mempool *mp)
  41 {
  42         struct dpaa2_bp_list *bp_list;
  43         struct dpaa2_dpbp_dev *avail_dpbp;
  44         struct dpaa2_bp_info *bp_info;
  45         struct dpbp_attr dpbp_attr;
  46         uint32_t bpid;
  47         int ret;
  48
  49         avail_dpbp = dpaa2_alloc_dpbp_dev();
  50
  51         if (rte_dpaa2_bpid_info == NULL) {
  52                 rte_dpaa2_bpid_info = (struct dpaa2_bp_info *)rte_malloc(NULL,
  53                                       sizeof(struct dpaa2_bp_info) * MAX_BPID,
  54                                       RTE_CACHE_LINE_SIZE);
  55                 if (rte_dpaa2_bpid_info == NULL)
  56                         return -ENOMEM;
  57                 memset(rte_dpaa2_bpid_info, 0,
  58                        sizeof(struct dpaa2_bp_info) * MAX_BPID);
  59         }
  60
  61         if (!avail_dpbp) {
  62                 DPAA2_MEMPOOL_ERR("DPAA2 pool not available!");
  63                 return -ENOENT;
  64         }
  65
  66         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
  67                 ret = dpaa2_affine_qbman_swp();
  68                 if (ret) {
  69                         DPAA2_MEMPOOL_ERR(
  70                                 "Failed to allocate IO portal, tid: %d\n",
  71                                 rte_gettid());
  72                         goto err1;
  73                 }
  74         }
  75
  76         ret = dpbp_enable(&avail_dpbp->dpbp, CMD_PRI_LOW, avail_dpbp->token);
  77         if (ret != 0) {
  78                 DPAA2_MEMPOOL_ERR("Resource enable failure with err code: %d",
  79                                   ret);
  80                 goto err1;
  81         }
  82
  83         ret = dpbp_get_attributes(&avail_dpbp->dpbp, CMD_PRI_LOW,
  84                                   avail_dpbp->token, &dpbp_attr);
  85         if (ret != 0) {
  86                 DPAA2_MEMPOOL_ERR("Resource read failure with err code: %d",
  87                                   ret);
  88                 goto err2;
  89         }
  90
  91         bp_info = rte_malloc(NULL,
  92                              sizeof(struct dpaa2_bp_info),
  93                              RTE_CACHE_LINE_SIZE);
  94         if (!bp_info) {
  95                 DPAA2_MEMPOOL_ERR("Unable to allocate buffer pool memory");
  96                 ret = -ENOMEM;
  97                 goto err2;
  98         }
  99
 100         /* Allocate the bp_list which will be added into global_bp_list */
 101         bp_list = rte_malloc(NULL, sizeof(struct dpaa2_bp_list),
 102                              RTE_CACHE_LINE_SIZE);
 103         if (!bp_list) {
 104                 DPAA2_MEMPOOL_ERR("Unable to allocate buffer pool memory");
 105                 ret = -ENOMEM;
 106                 goto err3;
 107         }
 108
 109         /* Set parameters of buffer pool list */
 110         bp_list->buf_pool.num_bufs = mp->size;
 111         bp_list->buf_pool.size = mp->elt_size
 112                         - sizeof(struct rte_mbuf) - rte_pktmbuf_priv_size(mp);
 113         bp_list->buf_pool.bpid = dpbp_attr.bpid;
 114         bp_list->buf_pool.h_bpool_mem = NULL;
 115         bp_list->buf_pool.dpbp_node = avail_dpbp;
 116         /* Identification for our offloaded pool_data structure */
 117         bp_list->dpaa2_ops_index = mp->ops_index;
 118         bp_list->next = h_bp_list;
 119         bp_list->mp = mp;
 120
 121         bpid = dpbp_attr.bpid;
 122
 123         rte_dpaa2_bpid_info[bpid].meta_data_size = sizeof(struct rte_mbuf)
 124                                 + rte_pktmbuf_priv_size(mp);
 125         rte_dpaa2_bpid_info[bpid].bp_list = bp_list;
 126         rte_dpaa2_bpid_info[bpid].bpid = bpid;
 127
 128         rte_memcpy(bp_info, (void *)&rte_dpaa2_bpid_info[bpid],
 129                    sizeof(struct dpaa2_bp_info));
 130         mp->pool_data = (void *)bp_info;
 131
 132         DPAA2_MEMPOOL_DEBUG("BP List created for bpid =%d", dpbp_attr.bpid);
 133
 134         h_bp_list = bp_list;
 135         return 0;
 136 err3:
 137         rte_free(bp_info);
 138 err2:
 139         dpbp_disable(&avail_dpbp->dpbp, CMD_PRI_LOW, avail_dpbp->token);
 140 err1:
 141         dpaa2_free_dpbp_dev(avail_dpbp);
 142
 143         return ret;
 144 }
 145
 146 static void
 147 rte_hw_mbuf_free_pool(struct rte_mempool *mp)
 148 {
 149         struct dpaa2_bp_info *bpinfo;
 150         struct dpaa2_bp_list *bp;
 151         struct dpaa2_dpbp_dev *dpbp_node;
 152
 153         if (!mp->pool_data) {
 154                 DPAA2_MEMPOOL_ERR("Not a valid dpaa2 buffer pool");
 155                 return;
 156         }
 157
 158         bpinfo = (struct dpaa2_bp_info *)mp->pool_data;
 159         bp = bpinfo->bp_list;
 160         dpbp_node = bp->buf_pool.dpbp_node;
 161
 162         dpbp_disable(&(dpbp_node->dpbp), CMD_PRI_LOW, dpbp_node->token);
 163
 164         if (h_bp_list == bp) {
 165                 h_bp_list = h_bp_list->next;
 166         } else { /* if it is not the first node */
 167                 struct dpaa2_bp_list *prev = h_bp_list, *temp;
 168                 temp = h_bp_list->next;
 169                 while (temp) {
 170                         if (temp == bp) {
 171                                 prev->next = temp->next;
 172                                 rte_free(bp);
 173                                 break;
 174                         }
 175                         prev = temp;
 176                         temp = temp->next;
 177                 }
 178         }
 179
 180         rte_free(mp->pool_data);
 181         dpaa2_free_dpbp_dev(dpbp_node);
 182 }
 183
 184 static void
 185 rte_dpaa2_mbuf_release(struct rte_mempool *pool __rte_unused,
 186                         void * const *obj_table,
 187                         uint32_t bpid,
 188                         uint32_t meta_data_size,
 189                         int count)
 190 {
 191         struct qbman_release_desc releasedesc;
 192         struct qbman_swp *swp;
 193         int ret;
 194         int i, n, retry_count;
 195         uint64_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 196
 197         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 198                 ret = dpaa2_affine_qbman_swp();
 199                 if (ret != 0) {
 200                         DPAA2_MEMPOOL_ERR(
 201                                 "Failed to allocate IO portal, tid: %d\n",
 202                                 rte_gettid());
 203                         return;
 204                 }
 205         }
 206         swp = DPAA2_PER_LCORE_PORTAL;
 207
 208         /* Create a release descriptor required for releasing
 209          * buffers into QBMAN
 210          */
 211         qbman_release_desc_clear(&releasedesc);
 212         qbman_release_desc_set_bpid(&releasedesc, bpid);
 213
 214         n = count % DPAA2_MBUF_MAX_ACQ_REL;
 215         if (unlikely(!n))
 216                 goto aligned;
 217
 218         /* convert mbuf to buffers for the remainder */
 219         for (i = 0; i < n ; i++) {
 220 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 221                 bufs[i] = (uint64_t)rte_mempool_virt2iova(obj_table[i])
 222                                 + meta_data_size;
 223 #else
 224                 bufs[i] = (uint64_t)obj_table[i] + meta_data_size;
 225 #endif
 226         }
 227
 228         /* feed them to bman */
 229         retry_count = 0;
 230         while ((ret = qbman_swp_release(swp, &releasedesc, bufs, n)) ==
 231                         -EBUSY) {
 232                 retry_count++;
 233                 if (retry_count > DPAA2_MAX_TX_RETRY_COUNT) {
 234                         DPAA2_MEMPOOL_ERR("bman release retry exceeded, low fbpr?");
 235                         return;
 236                 }
 237         }
 238
 239 aligned:
 240         /* if there are more buffers to free */
 241         while (n < count) {
 242                 /* convert mbuf to buffers */
 243                 for (i = 0; i < DPAA2_MBUF_MAX_ACQ_REL; i++) {
 244 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 245                         bufs[i] = (uint64_t)
 246                                   rte_mempool_virt2iova(obj_table[n + i])
 247                                   + meta_data_size;
 248 #else
 249                         bufs[i] = (uint64_t)obj_table[n + i] + meta_data_size;
 250 #endif
 251                 }
 252
 253                 retry_count = 0;
 254                 while ((ret = qbman_swp_release(swp, &releasedesc, bufs,
 255                                         DPAA2_MBUF_MAX_ACQ_REL)) == -EBUSY) {
 256                         retry_count++;
 257                         if (retry_count > DPAA2_MAX_TX_RETRY_COUNT) {
 258                                 DPAA2_MEMPOOL_ERR("bman release retry exceeded, low fbpr?");
 259                                 return;
 260                         }
 261                 }
 262                 n += DPAA2_MBUF_MAX_ACQ_REL;
 263         }
 264 }
 265
 266 uint16_t
 267 rte_dpaa2_mbuf_pool_bpid(struct rte_mempool *mp)
 268 {
 269         struct dpaa2_bp_info *bp_info;
 270
 271         bp_info = mempool_to_bpinfo(mp);
 272         if (!(bp_info->bp_list)) {
 273                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 274                 return -ENOMEM;
 275         }
 276
 277         return bp_info->bpid;
 278 }
 279
 280 struct rte_mbuf *
 281 rte_dpaa2_mbuf_from_buf_addr(struct rte_mempool *mp, void *buf_addr)
 282 {
 283         struct dpaa2_bp_info *bp_info;
 284
 285         bp_info = mempool_to_bpinfo(mp);
 286         if (!(bp_info->bp_list)) {
 287                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 288                 return NULL;
 289         }
 290
 291         return (struct rte_mbuf *)((uint8_t *)buf_addr -
 292                         bp_info->meta_data_size);
 293 }
 294
 295 int
 296 rte_dpaa2_mbuf_alloc_bulk(struct rte_mempool *pool,
 297                           void **obj_table, unsigned int count)
 298 {
 299 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 300         static int alloc;
 301 #endif
 302         struct qbman_swp *swp;
 303         uint16_t bpid;
 304         size_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 305         int i, ret;
 306         unsigned int n = 0;
 307         struct dpaa2_bp_info *bp_info;
 308
 309         bp_info = mempool_to_bpinfo(pool);
 310
 311         if (!(bp_info->bp_list)) {
 312                 DPAA2_MEMPOOL_ERR("DPAA2 buffer pool not configured");
 313                 return -ENOENT;
 314         }
 315
 316         bpid = bp_info->bpid;
 317
 318         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 319                 ret = dpaa2_affine_qbman_swp();
 320                 if (ret != 0) {
 321                         DPAA2_MEMPOOL_ERR(
 322                                 "Failed to allocate IO portal, tid: %d\n",
 323                                 rte_gettid());
 324                         return ret;
 325                 }
 326         }
 327         swp = DPAA2_PER_LCORE_PORTAL;
 328
 329         while (n < count) {
 330                 /* Acquire is all-or-nothing, so we drain in 7s,
 331                  * then the remainder.
 332                  */
 333                 if ((count - n) > DPAA2_MBUF_MAX_ACQ_REL) {
 334                         ret = qbman_swp_acquire(swp, bpid, (void *)bufs,
 335                                                 DPAA2_MBUF_MAX_ACQ_REL);
 336                 } else {
 337                         ret = qbman_swp_acquire(swp, bpid, (void *)bufs,
 338                                                 count - n);
 339                 }
 340                 /* In case of less than requested number of buffers available
 341                  * in pool, qbman_swp_acquire returns 0
 342                  */
 343                 if (ret <= 0) {
 344                         DPAA2_MEMPOOL_DP_DEBUG(
 345                                 "Buffer acquire failed with err code: %d", ret);
 346                         /* The API expect the exact number of requested bufs */
 347                         /* Releasing all buffers allocated */
 348                         rte_dpaa2_mbuf_release(pool, obj_table, bpid,
 349                                            bp_info->meta_data_size, n);
 350                         return -ENOBUFS;
 351                 }
 352                 /* assigning mbuf from the acquired objects */
 353                 for (i = 0; (i < ret) && bufs[i]; i++) {
 354                         DPAA2_MODIFY_IOVA_TO_VADDR(bufs[i], size_t);
 355                         obj_table[n] = (struct rte_mbuf *)
 356                                        (bufs[i] - bp_info->meta_data_size);
 357                         DPAA2_MEMPOOL_DP_DEBUG(
 358                                    "Acquired %p address %p from BMAN\n",
 359                                    (void *)bufs[i], (void *)obj_table[n]);
 360                         n++;
 361                 }
 362         }
 363
 364 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 365         alloc += n;
 366         DPAA2_MEMPOOL_DP_DEBUG("Total = %d , req = %d done = %d\n",
 367                                alloc, count, n);
 368 #endif
 369         return 0;
 370 }
 371
 372 static int
 373 rte_hw_mbuf_free_bulk(struct rte_mempool *pool,
 374                   void * const *obj_table, unsigned int n)
 375 {
 376         struct dpaa2_bp_info *bp_info;
 377
 378         bp_info = mempool_to_bpinfo(pool);
 379         if (!(bp_info->bp_list)) {
 380                 DPAA2_MEMPOOL_ERR("DPAA2 buffer pool not configured");
 381                 return -ENOENT;
 382         }
 383         rte_dpaa2_mbuf_release(pool, obj_table, bp_info->bpid,
 384                            bp_info->meta_data_size, n);
 385
 386         return 0;
 387 }
 388
 389 static unsigned int
 390 rte_hw_mbuf_get_count(const struct rte_mempool *mp)
 391 {
 392         int ret;
 393         unsigned int num_of_bufs = 0;
 394         struct dpaa2_bp_info *bp_info;
 395         struct dpaa2_dpbp_dev *dpbp_node;
 396
 397         if (!mp || !mp->pool_data) {
 398                 DPAA2_MEMPOOL_ERR("Invalid mempool provided");
 399                 return 0;
 400         }
 401
 402         bp_info = (struct dpaa2_bp_info *)mp->pool_data;
 403         dpbp_node = bp_info->bp_list->buf_pool.dpbp_node;
 404
 405         ret = dpbp_get_num_free_bufs(&dpbp_node->dpbp, CMD_PRI_LOW,
 406                                      dpbp_node->token, &num_of_bufs);
 407         if (ret) {
 408                 DPAA2_MEMPOOL_ERR("Unable to obtain free buf count (err=%d)",
 409                                   ret);
 410                 return 0;
 411         }
 412
 413         DPAA2_MEMPOOL_DP_DEBUG("Free bufs = %u\n", num_of_bufs);
 414
 415         return num_of_bufs;
 416 }
 417
 418 static int
 419 dpaa2_populate(struct rte_mempool *mp, unsigned int max_objs,
 420               void *vaddr, rte_iova_t paddr, size_t len,
 421               rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg)
 422 {
 423         struct rte_memseg_list *msl;
 424         /* The memsegment list exists incase the memory is not external.
 425          * So, DMA-Map is required only when memory is provided by user,
 426          * i.e. External.
 427          */
 428         msl = rte_mem_virt2memseg_list(vaddr);
 429
 430         if (!msl) {
 431                 DPAA2_MEMPOOL_DEBUG("Memsegment is External.\n");
 432                 rte_fslmc_vfio_mem_dmamap((size_t)vaddr,
 433                                 (size_t)paddr, (size_t)len);
 434         }
 435         /* Insert entry into the PA->VA Table */
 436         dpaax_iova_table_update(paddr, vaddr, len);
 437
 438         return rte_mempool_op_populate_helper(mp, 0, max_objs, vaddr, paddr,
 439                                                len, obj_cb, obj_cb_arg);
 440 }
 441
 442 static const struct rte_mempool_ops dpaa2_mpool_ops = {
 443         .name = DPAA2_MEMPOOL_OPS_NAME,
 444         .alloc = rte_hw_mbuf_create_pool,
 445         .free = rte_hw_mbuf_free_pool,
 446         .enqueue = rte_hw_mbuf_free_bulk,
 447         .dequeue = rte_dpaa2_mbuf_alloc_bulk,
 448         .get_count = rte_hw_mbuf_get_count,
 449         .populate = dpaa2_populate,
 450 };
 451
 452 MEMPOOL_REGISTER_OPS(dpaa2_mpool_ops);
 453
 454 RTE_LOG_REGISTER(dpaa2_logtype_mempool, mempool.dpaa2, NOTICE);