drivers/compress/isal/isal_compress_pmd_ops.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Intel Corporation
   3  */
   4 #include <isa-l.h>
   5
   6 #include <rte_common.h>
   7 #include <rte_compressdev_pmd.h>
   8 #include <rte_malloc.h>
   9
  10 #include "isal_compress_pmd_private.h"
  11
  12 static const struct rte_compressdev_capabilities isal_pmd_capabilities[] = {
  13         {
  14                 .algo = RTE_COMP_ALGO_DEFLATE,
  15                 .comp_feature_flags =   RTE_COMP_FF_SHAREABLE_PRIV_XFORM |
  16                                         RTE_COMP_FF_HUFFMAN_FIXED |
  17                                         RTE_COMP_FF_HUFFMAN_DYNAMIC,
  18                 .window_size = {
  19                         .min = 15,
  20                         .max = 15,
  21                         .increment = 0
  22                 },
  23         },
  24         RTE_COMP_END_OF_CAPABILITIES_LIST()
  25 };
  26
  27 /** Configure device */
  28 static int
  29 isal_comp_pmd_config(struct rte_compressdev *dev,
  30                 struct rte_compressdev_config *config)
  31 {
  32         int ret = 0;
  33         unsigned int n;
  34         char mp_name[RTE_COMPRESSDEV_NAME_MAX_LEN];
  35         unsigned int elt_size = sizeof(struct isal_priv_xform);
  36         struct isal_comp_private *internals = dev->data->dev_private;
  37
  38         n = snprintf(mp_name, sizeof(mp_name), "compdev_%d_xform_mp",
  39                         dev->data->dev_id);
  40         if (n > sizeof(mp_name)) {
  41                 ISAL_PMD_LOG(ERR,
  42                         "Unable to create unique name for xform mempool");
  43                 return -ENOMEM;
  44         }
  45
  46         internals->priv_xform_mp = rte_mempool_lookup(mp_name);
  47
  48         if (internals->priv_xform_mp != NULL) {
  49                 if (((internals->priv_xform_mp)->elt_size != elt_size) ||
  50                                 ((internals->priv_xform_mp)->size <
  51                                         config->max_nb_priv_xforms)) {
  52
  53                         ISAL_PMD_LOG(ERR, "%s mempool already exists with different"
  54                                 " initialization parameters", mp_name);
  55                         internals->priv_xform_mp = NULL;
  56                         return -ENOMEM;
  57                 }
  58         } else { /* First time configuration */
  59                 internals->priv_xform_mp = rte_mempool_create(
  60                                 mp_name, /* mempool name */
  61                                 /* number of elements*/
  62                                 config->max_nb_priv_xforms,
  63                                 elt_size, /* element size*/
  64                                 0, /* Cache size*/
  65                                 0, /* private data size */
  66                                 NULL, /* obj initialization constructor */
  67                                 NULL, /* obj initialization constructor arg */
  68                                 NULL, /**< obj constructor*/
  69                                 NULL, /* obj constructor arg */
  70                                 config->socket_id, /* socket id */
  71                                 0); /* flags */
  72         }
  73
  74         if (internals->priv_xform_mp == NULL) {
  75                 ISAL_PMD_LOG(ERR, "%s mempool allocation failed", mp_name);
  76                 return -ENOMEM;
  77         }
  78
  79         dev->data->dev_private = internals;
  80
  81         return ret;
  82 }
  83
  84 /** Start device */
  85 static int
  86 isal_comp_pmd_start(__rte_unused struct rte_compressdev *dev)
  87 {
  88         return 0;
  89 }
  90
  91 /** Stop device */
  92 static void
  93 isal_comp_pmd_stop(__rte_unused struct rte_compressdev *dev)
  94 {
  95 }
  96
  97 /** Close device */
  98 static int
  99 isal_comp_pmd_close(struct rte_compressdev *dev)
 100 {
 101         /* Free private data */
 102         struct isal_comp_private *internals = dev->data->dev_private;
 103
 104         rte_mempool_free(internals->priv_xform_mp);
 105         return 0;
 106 }
 107
 108 /** Get device statistics */
 109 static void
 110 isal_comp_pmd_stats_get(struct rte_compressdev *dev,
 111                 struct rte_compressdev_stats *stats)
 112 {
 113         uint16_t qp_id;
 114
 115         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
 116                 struct isal_comp_qp *qp = dev->data->queue_pairs[qp_id];
 117
 118                 stats->enqueued_count += qp->qp_stats.enqueued_count;
 119                 stats->dequeued_count += qp->qp_stats.dequeued_count;
 120
 121                 stats->enqueue_err_count += qp->qp_stats.enqueue_err_count;
 122                 stats->dequeue_err_count += qp->qp_stats.dequeue_err_count;
 123         }
 124 }
 125
 126 /** Get device info */
 127 static void
 128 isal_comp_pmd_info_get(struct rte_compressdev *dev __rte_unused,
 129                 struct rte_compressdev_info *dev_info)
 130 {
 131         if (dev_info != NULL) {
 132                 dev_info->capabilities = isal_pmd_capabilities;
 133                 dev_info->feature_flags = RTE_COMPDEV_FF_CPU_AVX512 |
 134                                 RTE_COMPDEV_FF_CPU_AVX2 |
 135                                 RTE_COMPDEV_FF_CPU_AVX |
 136                                 RTE_COMPDEV_FF_CPU_SSE;
 137         }
 138 }
 139
 140 /** Reset device statistics */
 141 static void
 142 isal_comp_pmd_stats_reset(struct rte_compressdev *dev)
 143 {
 144         uint16_t qp_id;
 145
 146         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
 147                 struct isal_comp_qp *qp = dev->data->queue_pairs[qp_id];
 148                 memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
 149         }
 150 }
 151
 152 /** Release queue pair */
 153 static int
 154 isal_comp_pmd_qp_release(struct rte_compressdev *dev, uint16_t qp_id)
 155 {
 156         struct isal_comp_qp *qp = dev->data->queue_pairs[qp_id];
 157
 158         if (qp == NULL)
 159                 return -EINVAL;
 160
 161         if (qp->stream != NULL)
 162                 rte_free(qp->stream);
 163
 164         if (qp->stream->level_buf != NULL)
 165                 rte_free(qp->stream->level_buf);
 166
 167         if (qp->state != NULL)
 168                 rte_free(qp->state);
 169
 170         rte_free(qp);
 171         dev->data->queue_pairs[qp_id] = NULL;
 172
 173         return 0;
 174 }
 175
 176 /** Create a ring to place process packets on */
 177 static struct rte_ring *
 178 isal_comp_pmd_qp_create_processed_pkts_ring(struct isal_comp_qp *qp,
 179                 unsigned int ring_size, int socket_id)
 180 {
 181         struct rte_ring *r;
 182
 183         r = rte_ring_lookup(qp->name);
 184         if (r) {
 185                 if (rte_ring_get_size(r) >= ring_size) {
 186                         ISAL_PMD_LOG(DEBUG,
 187                                 "Reusing existing ring %s for processed packets",
 188                                 qp->name);
 189                         return r;
 190                 }
 191
 192                         ISAL_PMD_LOG(ERR,
 193                                 "Unable to reuse existing ring %s"
 194                                 " for processed packets",
 195                          qp->name);
 196                 return NULL;
 197         }
 198
 199         return rte_ring_create(qp->name, ring_size, socket_id,
 200                         RING_F_SP_ENQ | RING_F_SC_DEQ);
 201 }
 202
 203 /** set a unique name for the queue pair based on its name, dev_id and qp_id */
 204 static int
 205 isal_comp_pmd_qp_set_unique_name(struct rte_compressdev *dev,
 206 struct isal_comp_qp *qp)
 207 {
 208         unsigned int n = snprintf(qp->name, sizeof(qp->name),
 209                         "isal_compression_pmd_%u_qp_%u",
 210                         dev->data->dev_id, qp->id);
 211
 212         if (n >= sizeof(qp->name))
 213                 return -1;
 214
 215         return 0;
 216 }
 217
 218 /* Setup a queue pair */
 219 static int
 220 isal_comp_pmd_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
 221                 uint32_t max_inflight_ops, int socket_id)
 222 {
 223         struct isal_comp_qp *qp = NULL;
 224         int retval;
 225
 226         /* Free memory prior to re-allocation if needed. */
 227         if (dev->data->queue_pairs[qp_id] != NULL)
 228                 isal_comp_pmd_qp_release(dev, qp_id);
 229
 230         /* Allocate the queue pair data structure. */
 231         qp = rte_zmalloc_socket("Isa-l compression PMD Queue Pair", sizeof(*qp),
 232                                         RTE_CACHE_LINE_SIZE, socket_id);
 233         if (qp == NULL) {
 234                 ISAL_PMD_LOG(ERR, "Failed to allocate queue pair memory");
 235                 return (-ENOMEM);
 236         }
 237
 238         /* Initialize memory for compression stream structure */
 239         qp->stream = rte_zmalloc_socket("Isa-l compression stream ",
 240                         sizeof(struct isal_zstream),  RTE_CACHE_LINE_SIZE,
 241                         socket_id);
 242
 243         /* Initialize memory for compression level buffer */
 244         qp->stream->level_buf = rte_zmalloc_socket("Isa-l compression lev_buf",
 245                         ISAL_DEF_LVL3_DEFAULT, RTE_CACHE_LINE_SIZE,
 246                         socket_id);
 247
 248         /* Initialize memory for decompression state structure */
 249         qp->state = rte_zmalloc_socket("Isa-l decompression state",
 250                         sizeof(struct inflate_state), RTE_CACHE_LINE_SIZE,
 251                         socket_id);
 252
 253         qp->id = qp_id;
 254         dev->data->queue_pairs[qp_id] = qp;
 255
 256         retval = isal_comp_pmd_qp_set_unique_name(dev, qp);
 257         if (retval) {
 258                 ISAL_PMD_LOG(ERR, "Failed to create unique name for isal "
 259                                 "compression device");
 260                 goto qp_setup_cleanup;
 261         }
 262
 263         qp->processed_pkts = isal_comp_pmd_qp_create_processed_pkts_ring(qp,
 264                         max_inflight_ops, socket_id);
 265         if (qp->processed_pkts == NULL) {
 266                 ISAL_PMD_LOG(ERR, "Failed to create unique name for isal "
 267                                 "compression device");
 268                 goto qp_setup_cleanup;
 269         }
 270
 271         qp->num_free_elements = rte_ring_free_count(qp->processed_pkts);
 272
 273         memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
 274         return 0;
 275
 276 qp_setup_cleanup:
 277         if (qp)
 278                 rte_free(qp);
 279
 280         return -1;
 281 }
 282
 283 /** Set private xform data*/
 284 static int
 285 isal_comp_pmd_priv_xform_create(struct rte_compressdev *dev,
 286                         const struct rte_comp_xform *xform, void **priv_xform)
 287 {
 288         int ret;
 289         struct isal_comp_private *internals = dev->data->dev_private;
 290
 291         if (xform == NULL) {
 292                 ISAL_PMD_LOG(ERR, "Invalid Xform struct");
 293                 return -EINVAL;
 294         }
 295
 296         if (rte_mempool_get(internals->priv_xform_mp, priv_xform)) {
 297                 ISAL_PMD_LOG(ERR,
 298                         "Couldn't get object from private xform mempool");
 299                 return -ENOMEM;
 300         }
 301
 302         ret = isal_comp_set_priv_xform_parameters(*priv_xform, xform);
 303         if (ret != 0) {
 304                 ISAL_PMD_LOG(ERR, "Failed to configure private xform parameters");
 305
 306                 /* Return private xform to mempool */
 307                 rte_mempool_put(internals->priv_xform_mp, priv_xform);
 308                 return ret;
 309         }
 310         return 0;
 311 }
 312
 313 /** Clear memory of the private xform so it doesn't leave key material behind */
 314 static int
 315 isal_comp_pmd_priv_xform_free(struct rte_compressdev *dev, void *priv_xform)
 316 {
 317         struct isal_comp_private *internals = dev->data->dev_private;
 318
 319         /* Zero out the whole structure */
 320         if (priv_xform) {
 321                 memset(priv_xform, 0, sizeof(struct isal_priv_xform));
 322                 rte_mempool_put(internals->priv_xform_mp, priv_xform);
 323         }
 324         return 0;
 325 }
 326
 327 struct rte_compressdev_ops isal_pmd_ops = {
 328                 .dev_configure          = isal_comp_pmd_config,
 329                 .dev_start              = isal_comp_pmd_start,
 330                 .dev_stop               = isal_comp_pmd_stop,
 331                 .dev_close              = isal_comp_pmd_close,
 332
 333                 .stats_get              = isal_comp_pmd_stats_get,
 334                 .stats_reset            = isal_comp_pmd_stats_reset,
 335
 336                 .dev_infos_get          = isal_comp_pmd_info_get,
 337
 338                 .queue_pair_setup       = isal_comp_pmd_qp_setup,
 339                 .queue_pair_release     = isal_comp_pmd_qp_release,
 340
 341                 .private_xform_create   = isal_comp_pmd_priv_xform_create,
 342                 .private_xform_free     = isal_comp_pmd_priv_xform_free,
 343 };
 344
 345 struct rte_compressdev_ops *isal_compress_pmd_ops = &isal_pmd_ops;