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 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_logs.h>
  27 #include <mc/fsl_dpbp.h>
  28 #include <portal/dpaa2_hw_pvt.h>
  29 #include <portal/dpaa2_hw_dpio.h>
  30 #include "dpaa2_hw_mempool.h"
  31 #include "dpaa2_hw_mempool_logs.h"
  32
  33 #include <dpaax_iova_table.h>
  34
  35 struct dpaa2_bp_info *rte_dpaa2_bpid_info;
  36 static struct dpaa2_bp_list *h_bp_list;
  37
  38 /* Dynamic logging identified for mempool */
  39 int dpaa2_logtype_mempool;
  40
  41 static int
  42 rte_hw_mbuf_create_pool(struct rte_mempool *mp)
  43 {
  44         struct dpaa2_bp_list *bp_list;
  45         struct dpaa2_dpbp_dev *avail_dpbp;
  46         struct dpaa2_bp_info *bp_info;
  47         struct dpbp_attr dpbp_attr;
  48         uint32_t bpid;
  49         int ret;
  50
  51         avail_dpbp = dpaa2_alloc_dpbp_dev();
  52
  53         if (rte_dpaa2_bpid_info == NULL) {
  54                 rte_dpaa2_bpid_info = (struct dpaa2_bp_info *)rte_malloc(NULL,
  55                                       sizeof(struct dpaa2_bp_info) * MAX_BPID,
  56                                       RTE_CACHE_LINE_SIZE);
  57                 if (rte_dpaa2_bpid_info == NULL)
  58                         return -ENOMEM;
  59                 memset(rte_dpaa2_bpid_info, 0,
  60                        sizeof(struct dpaa2_bp_info) * MAX_BPID);
  61         }
  62
  63         if (!avail_dpbp) {
  64                 DPAA2_MEMPOOL_ERR("DPAA2 pool not available!");
  65                 return -ENOENT;
  66         }
  67
  68         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
  69                 ret = dpaa2_affine_qbman_swp();
  70                 if (ret) {
  71                         DPAA2_MEMPOOL_ERR("Failure in affining portal");
  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;
 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("Failed to allocate IO portal");
 201                         return;
 202                 }
 203         }
 204         swp = DPAA2_PER_LCORE_PORTAL;
 205
 206         /* Create a release descriptor required for releasing
 207          * buffers into QBMAN
 208          */
 209         qbman_release_desc_clear(&releasedesc);
 210         qbman_release_desc_set_bpid(&releasedesc, bpid);
 211
 212         n = count % DPAA2_MBUF_MAX_ACQ_REL;
 213         if (unlikely(!n))
 214                 goto aligned;
 215
 216         /* convert mbuf to buffers for the remainder */
 217         for (i = 0; i < n ; i++) {
 218 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 219                 bufs[i] = (uint64_t)rte_mempool_virt2iova(obj_table[i])
 220                                 + meta_data_size;
 221 #else
 222                 bufs[i] = (uint64_t)obj_table[i] + meta_data_size;
 223 #endif
 224         }
 225
 226         /* feed them to bman */
 227         do {
 228                 ret = qbman_swp_release(swp, &releasedesc, bufs, n);
 229         } while (ret == -EBUSY);
 230
 231 aligned:
 232         /* if there are more buffers to free */
 233         while (n < count) {
 234                 /* convert mbuf to buffers */
 235                 for (i = 0; i < DPAA2_MBUF_MAX_ACQ_REL; i++) {
 236 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 237                         bufs[i] = (uint64_t)
 238                                   rte_mempool_virt2iova(obj_table[n + i])
 239                                   + meta_data_size;
 240 #else
 241                         bufs[i] = (uint64_t)obj_table[n + i] + meta_data_size;
 242 #endif
 243                 }
 244
 245                 do {
 246                         ret = qbman_swp_release(swp, &releasedesc, bufs,
 247                                                 DPAA2_MBUF_MAX_ACQ_REL);
 248                 } while (ret == -EBUSY);
 249                 n += DPAA2_MBUF_MAX_ACQ_REL;
 250         }
 251 }
 252
 253 uint16_t
 254 rte_dpaa2_mbuf_pool_bpid(struct rte_mempool *mp)
 255 {
 256         struct dpaa2_bp_info *bp_info;
 257
 258         bp_info = mempool_to_bpinfo(mp);
 259         if (!(bp_info->bp_list)) {
 260                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 261                 return -ENOMEM;
 262         }
 263
 264         return bp_info->bpid;
 265 }
 266
 267 struct rte_mbuf *
 268 rte_dpaa2_mbuf_from_buf_addr(struct rte_mempool *mp, void *buf_addr)
 269 {
 270         struct dpaa2_bp_info *bp_info;
 271
 272         bp_info = mempool_to_bpinfo(mp);
 273         if (!(bp_info->bp_list)) {
 274                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 275                 return NULL;
 276         }
 277
 278         return (struct rte_mbuf *)((uint8_t *)buf_addr -
 279                         bp_info->meta_data_size);
 280 }
 281
 282 int
 283 rte_dpaa2_mbuf_alloc_bulk(struct rte_mempool *pool,
 284                           void **obj_table, unsigned int count)
 285 {
 286 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 287         static int alloc;
 288 #endif
 289         struct qbman_swp *swp;
 290         uint16_t bpid;
 291         size_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 292         int i, ret;
 293         unsigned int n = 0;
 294         struct dpaa2_bp_info *bp_info;
 295
 296         bp_info = mempool_to_bpinfo(pool);
 297
 298         if (!(bp_info->bp_list)) {
 299                 DPAA2_MEMPOOL_ERR("DPAA2 buffer pool not configured");
 300                 return -ENOENT;
 301         }
 302
 303         bpid = bp_info->bpid;
 304
 305         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 306                 ret = dpaa2_affine_qbman_swp();
 307                 if (ret != 0) {
 308                         DPAA2_MEMPOOL_ERR("Failed to allocate IO portal");
 309                         return ret;
 310                 }
 311         }
 312         swp = DPAA2_PER_LCORE_PORTAL;
 313
 314         while (n < count) {
 315                 /* Acquire is all-or-nothing, so we drain in 7s,
 316                  * then the remainder.
 317                  */
 318                 if ((count - n) > DPAA2_MBUF_MAX_ACQ_REL) {
 319                         ret = qbman_swp_acquire(swp, bpid, (void *)bufs,
 320                                                 DPAA2_MBUF_MAX_ACQ_REL);
 321                 } else {
 322                         ret = qbman_swp_acquire(swp, bpid, (void *)bufs,
 323                                                 count - n);
 324                 }
 325                 /* In case of less than requested number of buffers available
 326                  * in pool, qbman_swp_acquire returns 0
 327                  */
 328                 if (ret <= 0) {
 329                         DPAA2_MEMPOOL_DP_DEBUG(
 330                                 "Buffer acquire failed with err code: %d", ret);
 331                         /* The API expect the exact number of requested bufs */
 332                         /* Releasing all buffers allocated */
 333                         rte_dpaa2_mbuf_release(pool, obj_table, bpid,
 334                                            bp_info->meta_data_size, n);
 335                         return -ENOBUFS;
 336                 }
 337                 /* assigning mbuf from the acquired objects */
 338                 for (i = 0; (i < ret) && bufs[i]; i++) {
 339                         DPAA2_MODIFY_IOVA_TO_VADDR(bufs[i], size_t);
 340                         obj_table[n] = (struct rte_mbuf *)
 341                                        (bufs[i] - bp_info->meta_data_size);
 342                         DPAA2_MEMPOOL_DP_DEBUG(
 343                                    "Acquired %p address %p from BMAN\n",
 344                                    (void *)bufs[i], (void *)obj_table[n]);
 345                         n++;
 346                 }
 347         }
 348
 349 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 350         alloc += n;
 351         DPAA2_MEMPOOL_DP_DEBUG("Total = %d , req = %d done = %d\n",
 352                                alloc, count, n);
 353 #endif
 354         return 0;
 355 }
 356
 357 static int
 358 rte_hw_mbuf_free_bulk(struct rte_mempool *pool,
 359                   void * const *obj_table, unsigned int n)
 360 {
 361         struct dpaa2_bp_info *bp_info;
 362
 363         bp_info = mempool_to_bpinfo(pool);
 364         if (!(bp_info->bp_list)) {
 365                 DPAA2_MEMPOOL_ERR("DPAA2 buffer pool not configured");
 366                 return -ENOENT;
 367         }
 368         rte_dpaa2_mbuf_release(pool, obj_table, bp_info->bpid,
 369                            bp_info->meta_data_size, n);
 370
 371         return 0;
 372 }
 373
 374 static unsigned int
 375 rte_hw_mbuf_get_count(const struct rte_mempool *mp)
 376 {
 377         int ret;
 378         unsigned int num_of_bufs = 0;
 379         struct dpaa2_bp_info *bp_info;
 380         struct dpaa2_dpbp_dev *dpbp_node;
 381
 382         if (!mp || !mp->pool_data) {
 383                 DPAA2_MEMPOOL_ERR("Invalid mempool provided");
 384                 return 0;
 385         }
 386
 387         bp_info = (struct dpaa2_bp_info *)mp->pool_data;
 388         dpbp_node = bp_info->bp_list->buf_pool.dpbp_node;
 389
 390         ret = dpbp_get_num_free_bufs(&dpbp_node->dpbp, CMD_PRI_LOW,
 391                                      dpbp_node->token, &num_of_bufs);
 392         if (ret) {
 393                 DPAA2_MEMPOOL_ERR("Unable to obtain free buf count (err=%d)",
 394                                   ret);
 395                 return 0;
 396         }
 397
 398         DPAA2_MEMPOOL_DP_DEBUG("Free bufs = %u\n", num_of_bufs);
 399
 400         return num_of_bufs;
 401 }
 402
 403 static int
 404 dpaa2_populate(struct rte_mempool *mp, unsigned int max_objs,
 405               void *vaddr, rte_iova_t paddr, size_t len,
 406               rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg)
 407 {
 408         /* Insert entry into the PA->VA Table */
 409         dpaax_iova_table_update(paddr, vaddr, len);
 410
 411         return rte_mempool_op_populate_default(mp, max_objs, vaddr, paddr, len,
 412                                                obj_cb, obj_cb_arg);
 413 }
 414
 415 static const struct rte_mempool_ops dpaa2_mpool_ops = {
 416         .name = DPAA2_MEMPOOL_OPS_NAME,
 417         .alloc = rte_hw_mbuf_create_pool,
 418         .free = rte_hw_mbuf_free_pool,
 419         .enqueue = rte_hw_mbuf_free_bulk,
 420         .dequeue = rte_dpaa2_mbuf_alloc_bulk,
 421         .get_count = rte_hw_mbuf_get_count,
 422         .populate = dpaa2_populate,
 423 };
 424
 425 MEMPOOL_REGISTER_OPS(dpaa2_mpool_ops);
 426
 427 RTE_INIT(dpaa2_mempool_init_log)
 428 {
 429         dpaa2_logtype_mempool = rte_log_register("mempool.dpaa2");
 430         if (dpaa2_logtype_mempool >= 0)
 431                 rte_log_set_level(dpaa2_logtype_mempool, RTE_LOG_NOTICE);
 432 }