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_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 /* Dynamic logging identified for mempool */
  40 int dpaa2_logtype_mempool;
  41
  42 static int
  43 rte_hw_mbuf_create_pool(struct rte_mempool *mp)
  44 {
  45         struct dpaa2_bp_list *bp_list;
  46         struct dpaa2_dpbp_dev *avail_dpbp;
  47         struct dpaa2_bp_info *bp_info;
  48         struct dpbp_attr dpbp_attr;
  49         uint32_t bpid;
  50         int ret;
  51
  52         avail_dpbp = dpaa2_alloc_dpbp_dev();
  53
  54         if (rte_dpaa2_bpid_info == NULL) {
  55                 rte_dpaa2_bpid_info = (struct dpaa2_bp_info *)rte_malloc(NULL,
  56                                       sizeof(struct dpaa2_bp_info) * MAX_BPID,
  57                                       RTE_CACHE_LINE_SIZE);
  58                 if (rte_dpaa2_bpid_info == NULL)
  59                         return -ENOMEM;
  60                 memset(rte_dpaa2_bpid_info, 0,
  61                        sizeof(struct dpaa2_bp_info) * MAX_BPID);
  62         }
  63
  64         if (!avail_dpbp) {
  65                 DPAA2_MEMPOOL_ERR("DPAA2 pool not available!");
  66                 return -ENOENT;
  67         }
  68
  69         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
  70                 ret = dpaa2_affine_qbman_swp();
  71                 if (ret) {
  72                         DPAA2_MEMPOOL_ERR("Failure in affining portal");
  73                         goto err1;
  74                 }
  75         }
  76
  77         ret = dpbp_enable(&avail_dpbp->dpbp, CMD_PRI_LOW, avail_dpbp->token);
  78         if (ret != 0) {
  79                 DPAA2_MEMPOOL_ERR("Resource enable failure with err code: %d",
  80                                   ret);
  81                 goto err1;
  82         }
  83
  84         ret = dpbp_get_attributes(&avail_dpbp->dpbp, CMD_PRI_LOW,
  85                                   avail_dpbp->token, &dpbp_attr);
  86         if (ret != 0) {
  87                 DPAA2_MEMPOOL_ERR("Resource read failure with err code: %d",
  88                                   ret);
  89                 goto err2;
  90         }
  91
  92         bp_info = rte_malloc(NULL,
  93                              sizeof(struct dpaa2_bp_info),
  94                              RTE_CACHE_LINE_SIZE);
  95         if (!bp_info) {
  96                 DPAA2_MEMPOOL_ERR("Unable to allocate buffer pool memory");
  97                 ret = -ENOMEM;
  98                 goto err2;
  99         }
 100
 101         /* Allocate the bp_list which will be added into global_bp_list */
 102         bp_list = rte_malloc(NULL, sizeof(struct dpaa2_bp_list),
 103                              RTE_CACHE_LINE_SIZE);
 104         if (!bp_list) {
 105                 DPAA2_MEMPOOL_ERR("Unable to allocate buffer pool memory");
 106                 ret = -ENOMEM;
 107                 goto err3;
 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         rte_memcpy(bp_info, (void *)&rte_dpaa2_bpid_info[bpid],
 130                    sizeof(struct dpaa2_bp_info));
 131         mp->pool_data = (void *)bp_info;
 132
 133         DPAA2_MEMPOOL_DEBUG("BP List created for bpid =%d", dpbp_attr.bpid);
 134
 135         h_bp_list = bp_list;
 136         return 0;
 137 err3:
 138         rte_free(bp_info);
 139 err2:
 140         dpbp_disable(&avail_dpbp->dpbp, CMD_PRI_LOW, avail_dpbp->token);
 141 err1:
 142         dpaa2_free_dpbp_dev(avail_dpbp);
 143
 144         return ret;
 145 }
 146
 147 static void
 148 rte_hw_mbuf_free_pool(struct rte_mempool *mp)
 149 {
 150         struct dpaa2_bp_info *bpinfo;
 151         struct dpaa2_bp_list *bp;
 152         struct dpaa2_dpbp_dev *dpbp_node;
 153
 154         if (!mp->pool_data) {
 155                 DPAA2_MEMPOOL_ERR("Not a valid dpaa2 buffer pool");
 156                 return;
 157         }
 158
 159         bpinfo = (struct dpaa2_bp_info *)mp->pool_data;
 160         bp = bpinfo->bp_list;
 161         dpbp_node = bp->buf_pool.dpbp_node;
 162
 163         dpbp_disable(&(dpbp_node->dpbp), CMD_PRI_LOW, dpbp_node->token);
 164
 165         if (h_bp_list == bp) {
 166                 h_bp_list = h_bp_list->next;
 167         } else { /* if it is not the first node */
 168                 struct dpaa2_bp_list *prev = h_bp_list, *temp;
 169                 temp = h_bp_list->next;
 170                 while (temp) {
 171                         if (temp == bp) {
 172                                 prev->next = temp->next;
 173                                 rte_free(bp);
 174                                 break;
 175                         }
 176                         prev = temp;
 177                         temp = temp->next;
 178                 }
 179         }
 180
 181         rte_free(mp->pool_data);
 182         dpaa2_free_dpbp_dev(dpbp_node);
 183 }
 184
 185 static void
 186 rte_dpaa2_mbuf_release(struct rte_mempool *pool __rte_unused,
 187                         void * const *obj_table,
 188                         uint32_t bpid,
 189                         uint32_t meta_data_size,
 190                         int count)
 191 {
 192         struct qbman_release_desc releasedesc;
 193         struct qbman_swp *swp;
 194         int ret;
 195         int i, n, retry_count;
 196         uint64_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 197
 198         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 199                 ret = dpaa2_affine_qbman_swp();
 200                 if (ret != 0) {
 201                         DPAA2_MEMPOOL_ERR("Failed to allocate IO portal");
 202                         return;
 203                 }
 204         }
 205         swp = DPAA2_PER_LCORE_PORTAL;
 206
 207         /* Create a release descriptor required for releasing
 208          * buffers into QBMAN
 209          */
 210         qbman_release_desc_clear(&releasedesc);
 211         qbman_release_desc_set_bpid(&releasedesc, bpid);
 212
 213         n = count % DPAA2_MBUF_MAX_ACQ_REL;
 214         if (unlikely(!n))
 215                 goto aligned;
 216
 217         /* convert mbuf to buffers for the remainder */
 218         for (i = 0; i < n ; i++) {
 219 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 220                 bufs[i] = (uint64_t)rte_mempool_virt2iova(obj_table[i])
 221                                 + meta_data_size;
 222 #else
 223                 bufs[i] = (uint64_t)obj_table[i] + meta_data_size;
 224 #endif
 225         }
 226
 227         /* feed them to bman */
 228         retry_count = 0;
 229         while ((ret = qbman_swp_release(swp, &releasedesc, bufs, n)) ==
 230                         -EBUSY) {
 231                 retry_count++;
 232                 if (retry_count > DPAA2_MAX_TX_RETRY_COUNT) {
 233                         DPAA2_MEMPOOL_ERR("bman release retry exceeded, low fbpr?");
 234                         return;
 235                 }
 236         }
 237
 238 aligned:
 239         /* if there are more buffers to free */
 240         while (n < count) {
 241                 /* convert mbuf to buffers */
 242                 for (i = 0; i < DPAA2_MBUF_MAX_ACQ_REL; i++) {
 243 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 244                         bufs[i] = (uint64_t)
 245                                   rte_mempool_virt2iova(obj_table[n + i])
 246                                   + meta_data_size;
 247 #else
 248                         bufs[i] = (uint64_t)obj_table[n + i] + meta_data_size;
 249 #endif
 250                 }
 251
 252                 retry_count = 0;
 253                 while ((ret = qbman_swp_release(swp, &releasedesc, bufs,
 254                                         DPAA2_MBUF_MAX_ACQ_REL)) == -EBUSY) {
 255                         retry_count++;
 256                         if (retry_count > DPAA2_MAX_TX_RETRY_COUNT) {
 257                                 DPAA2_MEMPOOL_ERR("bman release retry exceeded, low fbpr?");
 258                                 return;
 259                         }
 260                 }
 261                 n += DPAA2_MBUF_MAX_ACQ_REL;
 262         }
 263 }
 264
 265 uint16_t
 266 rte_dpaa2_mbuf_pool_bpid(struct rte_mempool *mp)
 267 {
 268         struct dpaa2_bp_info *bp_info;
 269
 270         bp_info = mempool_to_bpinfo(mp);
 271         if (!(bp_info->bp_list)) {
 272                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 273                 return -ENOMEM;
 274         }
 275
 276         return bp_info->bpid;
 277 }
 278
 279 struct rte_mbuf *
 280 rte_dpaa2_mbuf_from_buf_addr(struct rte_mempool *mp, void *buf_addr)
 281 {
 282         struct dpaa2_bp_info *bp_info;
 283
 284         bp_info = mempool_to_bpinfo(mp);
 285         if (!(bp_info->bp_list)) {
 286                 RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
 287                 return NULL;
 288         }
 289
 290         return (struct rte_mbuf *)((uint8_t *)buf_addr -
 291                         bp_info->meta_data_size);
 292 }
 293
 294 int
 295 rte_dpaa2_mbuf_alloc_bulk(struct rte_mempool *pool,
 296                           void **obj_table, unsigned int count)
 297 {
 298 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 299         static int alloc;
 300 #endif
 301         struct qbman_swp *swp;
 302         uint16_t bpid;
 303         size_t bufs[DPAA2_MBUF_MAX_ACQ_REL];
 304         int i, ret;
 305         unsigned int n = 0;
 306         struct dpaa2_bp_info *bp_info;
 307
 308         bp_info = mempool_to_bpinfo(pool);
 309
 310         if (!(bp_info->bp_list)) {
 311                 DPAA2_MEMPOOL_ERR("DPAA2 buffer pool not configured");
 312                 return -ENOENT;
 313         }
 314
 315         bpid = bp_info->bpid;
 316
 317         if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
 318                 ret = dpaa2_affine_qbman_swp();
 319                 if (ret != 0) {
 320                         DPAA2_MEMPOOL_ERR("Failed to allocate IO portal");
 321                         return ret;
 322                 }
 323         }
 324         swp = DPAA2_PER_LCORE_PORTAL;
 325
 326         while (n < count) {
 327                 /* Acquire is all-or-nothing, so we drain in 7s,
 328                  * then the remainder.
 329                  */
 330                 if ((count - n) > DPAA2_MBUF_MAX_ACQ_REL) {
 331                         ret = qbman_swp_acquire(swp, bpid, (void *)bufs,
 332                                                 DPAA2_MBUF_MAX_ACQ_REL);
 333                 } else {
 334                         ret = qbman_swp_acquire(swp, bpid, (void *)bufs,
 335                                                 count - n);
 336                 }
 337                 /* In case of less than requested number of buffers available
 338                  * in pool, qbman_swp_acquire returns 0
 339                  */
 340                 if (ret <= 0) {
 341                         DPAA2_MEMPOOL_DP_DEBUG(
 342                                 "Buffer acquire failed with err code: %d", ret);
 343                         /* The API expect the exact number of requested bufs */
 344                         /* Releasing all buffers allocated */
 345                         rte_dpaa2_mbuf_release(pool, obj_table, bpid,
 346                                            bp_info->meta_data_size, n);
 347                         return -ENOBUFS;
 348                 }
 349                 /* assigning mbuf from the acquired objects */
 350                 for (i = 0; (i < ret) && bufs[i]; i++) {
 351                         DPAA2_MODIFY_IOVA_TO_VADDR(bufs[i], size_t);
 352                         obj_table[n] = (struct rte_mbuf *)
 353                                        (bufs[i] - bp_info->meta_data_size);
 354                         DPAA2_MEMPOOL_DP_DEBUG(
 355                                    "Acquired %p address %p from BMAN\n",
 356                                    (void *)bufs[i], (void *)obj_table[n]);
 357                         n++;
 358                 }
 359         }
 360
 361 #ifdef RTE_LIBRTE_DPAA2_DEBUG_DRIVER
 362         alloc += n;
 363         DPAA2_MEMPOOL_DP_DEBUG("Total = %d , req = %d done = %d\n",
 364                                alloc, count, n);
 365 #endif
 366         return 0;
 367 }
 368
 369 static int
 370 rte_hw_mbuf_free_bulk(struct rte_mempool *pool,
 371                   void * const *obj_table, unsigned int n)
 372 {
 373         struct dpaa2_bp_info *bp_info;
 374
 375         bp_info = mempool_to_bpinfo(pool);
 376         if (!(bp_info->bp_list)) {
 377                 DPAA2_MEMPOOL_ERR("DPAA2 buffer pool not configured");
 378                 return -ENOENT;
 379         }
 380         rte_dpaa2_mbuf_release(pool, obj_table, bp_info->bpid,
 381                            bp_info->meta_data_size, n);
 382
 383         return 0;
 384 }
 385
 386 static unsigned int
 387 rte_hw_mbuf_get_count(const struct rte_mempool *mp)
 388 {
 389         int ret;
 390         unsigned int num_of_bufs = 0;
 391         struct dpaa2_bp_info *bp_info;
 392         struct dpaa2_dpbp_dev *dpbp_node;
 393
 394         if (!mp || !mp->pool_data) {
 395                 DPAA2_MEMPOOL_ERR("Invalid mempool provided");
 396                 return 0;
 397         }
 398
 399         bp_info = (struct dpaa2_bp_info *)mp->pool_data;
 400         dpbp_node = bp_info->bp_list->buf_pool.dpbp_node;
 401
 402         ret = dpbp_get_num_free_bufs(&dpbp_node->dpbp, CMD_PRI_LOW,
 403                                      dpbp_node->token, &num_of_bufs);
 404         if (ret) {
 405                 DPAA2_MEMPOOL_ERR("Unable to obtain free buf count (err=%d)",
 406                                   ret);
 407                 return 0;
 408         }
 409
 410         DPAA2_MEMPOOL_DP_DEBUG("Free bufs = %u\n", num_of_bufs);
 411
 412         return num_of_bufs;
 413 }
 414
 415 static int
 416 dpaa2_populate(struct rte_mempool *mp, unsigned int max_objs,
 417               void *vaddr, rte_iova_t paddr, size_t len,
 418               rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg)
 419 {
 420         struct rte_memseg_list *msl;
 421         /* The memsegment list exists incase the memory is not external.
 422          * So, DMA-Map is required only when memory is provided by user,
 423          * i.e. External.
 424          */
 425         msl = rte_mem_virt2memseg_list(vaddr);
 426
 427         if (!msl) {
 428                 DPAA2_MEMPOOL_DEBUG("Memsegment is External.\n");
 429                 rte_fslmc_vfio_mem_dmamap((size_t)vaddr,
 430                                 (size_t)paddr, (size_t)len);
 431         }
 432         /* Insert entry into the PA->VA Table */
 433         dpaax_iova_table_update(paddr, vaddr, len);
 434
 435         return rte_mempool_op_populate_default(mp, max_objs, vaddr, paddr, len,
 436                                                obj_cb, obj_cb_arg);
 437 }
 438
 439 static const struct rte_mempool_ops dpaa2_mpool_ops = {
 440         .name = DPAA2_MEMPOOL_OPS_NAME,
 441         .alloc = rte_hw_mbuf_create_pool,
 442         .free = rte_hw_mbuf_free_pool,
 443         .enqueue = rte_hw_mbuf_free_bulk,
 444         .dequeue = rte_dpaa2_mbuf_alloc_bulk,
 445         .get_count = rte_hw_mbuf_get_count,
 446         .populate = dpaa2_populate,
 447 };
 448
 449 MEMPOOL_REGISTER_OPS(dpaa2_mpool_ops);
 450
 451 RTE_INIT(dpaa2_mempool_init_log)
 452 {
 453         dpaa2_logtype_mempool = rte_log_register("mempool.dpaa2");
 454         if (dpaa2_logtype_mempool >= 0)
 455                 rte_log_set_level(dpaa2_logtype_mempool, RTE_LOG_NOTICE);
 456 }