drivers/raw/ioat/ioat_common.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2020 Intel Corporation
   3  */
   4
   5 #include <rte_rawdev_pmd.h>
   6 #include <rte_memzone.h>
   7 #include <rte_common.h>
   8 #include <rte_string_fns.h>
   9
  10 #include "ioat_private.h"
  11
  12 static const char * const xstat_names[] = {
  13                 "failed_enqueues", "successful_enqueues",
  14                 "copies_started", "copies_completed"
  15 };
  16
  17 int
  18 ioat_xstats_get(const struct rte_rawdev *dev, const unsigned int ids[],
  19                 uint64_t values[], unsigned int n)
  20 {
  21         const struct rte_ioat_rawdev *ioat = dev->dev_private;
  22         const uint64_t *stats = (const void *)&ioat->xstats;
  23         unsigned int i;
  24
  25         for (i = 0; i < n; i++) {
  26                 if (ids[i] > sizeof(ioat->xstats)/sizeof(*stats))
  27                         values[i] = 0;
  28                 else
  29                         values[i] = stats[ids[i]];
  30         }
  31         return n;
  32 }
  33
  34 int
  35 ioat_xstats_get_names(const struct rte_rawdev *dev,
  36                 struct rte_rawdev_xstats_name *names,
  37                 unsigned int size)
  38 {
  39         unsigned int i;
  40
  41         RTE_SET_USED(dev);
  42         if (size < RTE_DIM(xstat_names))
  43                 return RTE_DIM(xstat_names);
  44
  45         for (i = 0; i < RTE_DIM(xstat_names); i++)
  46                 strlcpy(names[i].name, xstat_names[i], sizeof(names[i]));
  47
  48         return RTE_DIM(xstat_names);
  49 }
  50
  51 int
  52 ioat_xstats_reset(struct rte_rawdev *dev, const uint32_t *ids, uint32_t nb_ids)
  53 {
  54         struct rte_ioat_rawdev *ioat = dev->dev_private;
  55         uint64_t *stats = (void *)&ioat->xstats;
  56         unsigned int i;
  57
  58         if (!ids) {
  59                 memset(&ioat->xstats, 0, sizeof(ioat->xstats));
  60                 return 0;
  61         }
  62
  63         for (i = 0; i < nb_ids; i++)
  64                 if (ids[i] < sizeof(ioat->xstats)/sizeof(*stats))
  65                         stats[ids[i]] = 0;
  66
  67         return 0;
  68 }
  69
  70 int
  71 idxd_rawdev_close(struct rte_rawdev *dev __rte_unused)
  72 {
  73         return 0;
  74 }
  75
  76 int
  77 idxd_dev_dump(struct rte_rawdev *dev, FILE *f)
  78 {
  79         struct idxd_rawdev *idxd = dev->dev_private;
  80         struct rte_idxd_rawdev *rte_idxd = &idxd->public;
  81         int i;
  82
  83         fprintf(f, "Raw Device #%d\n", dev->dev_id);
  84         fprintf(f, "Driver: %s\n\n", dev->driver_name);
  85
  86         fprintf(f, "Portal: %p\n", rte_idxd->portal);
  87         fprintf(f, "Config: {ring_size: %u, hdls_disable: %u}\n\n",
  88                         rte_idxd->cfg.ring_size, rte_idxd->cfg.hdls_disable);
  89
  90         fprintf(f, "max batches: %u\n", rte_idxd->max_batches);
  91         fprintf(f, "batch idx read: %u\n", rte_idxd->batch_idx_read);
  92         fprintf(f, "batch idx write: %u\n", rte_idxd->batch_idx_write);
  93         fprintf(f, "batch idxes:");
  94         for (i = 0; i < rte_idxd->max_batches + 1; i++)
  95                 fprintf(f, "%u ", rte_idxd->batch_idx_ring[i]);
  96         fprintf(f, "\n\n");
  97
  98         fprintf(f, "hdls read: %u\n", rte_idxd->max_batches);
  99         fprintf(f, "hdls avail: %u\n", rte_idxd->hdls_avail);
 100         fprintf(f, "batch start: %u\n", rte_idxd->batch_start);
 101         fprintf(f, "batch size: %u\n", rte_idxd->batch_size);
 102
 103         return 0;
 104 }
 105
 106 int
 107 idxd_dev_info_get(struct rte_rawdev *dev, rte_rawdev_obj_t dev_info,
 108                 size_t info_size)
 109 {
 110         struct rte_ioat_rawdev_config *cfg = dev_info;
 111         struct idxd_rawdev *idxd = dev->dev_private;
 112         struct rte_idxd_rawdev *rte_idxd = &idxd->public;
 113
 114         if (info_size != sizeof(*cfg))
 115                 return -EINVAL;
 116
 117         if (cfg != NULL)
 118                 *cfg = rte_idxd->cfg;
 119         return 0;
 120 }
 121
 122 int
 123 idxd_dev_configure(const struct rte_rawdev *dev,
 124                 rte_rawdev_obj_t config, size_t config_size)
 125 {
 126         struct idxd_rawdev *idxd = dev->dev_private;
 127         struct rte_idxd_rawdev *rte_idxd = &idxd->public;
 128         struct rte_ioat_rawdev_config *cfg = config;
 129         uint16_t max_desc = cfg->ring_size;
 130
 131         if (config_size != sizeof(*cfg))
 132                 return -EINVAL;
 133
 134         if (dev->started) {
 135                 IOAT_PMD_ERR("%s: Error, device is started.", __func__);
 136                 return -EAGAIN;
 137         }
 138
 139         rte_idxd->cfg = *cfg;
 140
 141         if (!rte_is_power_of_2(max_desc))
 142                 max_desc = rte_align32pow2(max_desc);
 143         IOAT_PMD_DEBUG("Rawdev %u using %u descriptors",
 144                         dev->dev_id, max_desc);
 145         rte_idxd->desc_ring_mask = max_desc - 1;
 146
 147         /* in case we are reconfiguring a device, free any existing memory */
 148         rte_free(rte_idxd->desc_ring);
 149         rte_free(rte_idxd->hdl_ring);
 150
 151         /* allocate the descriptor ring at 2x size as batches can't wrap */
 152         rte_idxd->desc_ring = rte_zmalloc(NULL,
 153                         sizeof(*rte_idxd->desc_ring) * max_desc * 2, 0);
 154         if (rte_idxd->desc_ring == NULL)
 155                 return -ENOMEM;
 156         rte_idxd->desc_iova = rte_mem_virt2iova(rte_idxd->desc_ring);
 157
 158         rte_idxd->hdl_ring = rte_zmalloc(NULL,
 159                         sizeof(*rte_idxd->hdl_ring) * max_desc, 0);
 160         if (rte_idxd->hdl_ring == NULL) {
 161                 rte_free(rte_idxd->desc_ring);
 162                 rte_idxd->desc_ring = NULL;
 163                 return -ENOMEM;
 164         }
 165         rte_idxd->hdl_ring_flags = rte_zmalloc(NULL,
 166                         sizeof(*rte_idxd->hdl_ring_flags) * max_desc, 0);
 167         if (rte_idxd->hdl_ring_flags == NULL) {
 168                 rte_free(rte_idxd->desc_ring);
 169                 rte_free(rte_idxd->hdl_ring);
 170                 rte_idxd->desc_ring = NULL;
 171                 rte_idxd->hdl_ring = NULL;
 172                 return -ENOMEM;
 173         }
 174         rte_idxd->hdls_read = rte_idxd->batch_start = 0;
 175         rte_idxd->batch_size = 0;
 176
 177         return 0;
 178 }
 179
 180 int
 181 idxd_rawdev_create(const char *name, struct rte_device *dev,
 182                    const struct idxd_rawdev *base_idxd,
 183                    const struct rte_rawdev_ops *ops)
 184 {
 185         struct idxd_rawdev *idxd;
 186         struct rte_idxd_rawdev *public;
 187         struct rte_rawdev *rawdev = NULL;
 188         const struct rte_memzone *mz = NULL;
 189         char mz_name[RTE_MEMZONE_NAMESIZE];
 190         int ret = 0;
 191
 192         RTE_BUILD_BUG_ON(sizeof(struct rte_idxd_hw_desc) != 64);
 193         RTE_BUILD_BUG_ON(offsetof(struct rte_idxd_hw_desc, size) != 32);
 194         RTE_BUILD_BUG_ON(sizeof(struct rte_idxd_completion) != 32);
 195
 196         if (!name) {
 197                 IOAT_PMD_ERR("Invalid name of the device!");
 198                 ret = -EINVAL;
 199                 goto cleanup;
 200         }
 201
 202         /* Allocate device structure */
 203         rawdev = rte_rawdev_pmd_allocate(name, sizeof(struct idxd_rawdev),
 204                                          dev->numa_node);
 205         if (rawdev == NULL) {
 206                 IOAT_PMD_ERR("Unable to allocate raw device");
 207                 ret = -ENOMEM;
 208                 goto cleanup;
 209         }
 210
 211         /* Allocate memory for the primary process or else return the memory
 212          * of primary memzone for the secondary process.
 213          */
 214         snprintf(mz_name, sizeof(mz_name), "rawdev%u_private", rawdev->dev_id);
 215         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
 216                 mz = rte_memzone_lookup(mz_name);
 217                 if (mz == NULL) {
 218                         IOAT_PMD_ERR("Unable lookup memzone for private data\n");
 219                         ret = -ENOMEM;
 220                         goto cleanup;
 221                 }
 222                 rawdev->dev_private = mz->addr;
 223                 rawdev->dev_ops = ops;
 224                 rawdev->device = dev;
 225                 return 0;
 226         }
 227         mz = rte_memzone_reserve(mz_name, sizeof(struct idxd_rawdev),
 228                         dev->numa_node, RTE_MEMZONE_IOVA_CONTIG);
 229         if (mz == NULL) {
 230                 IOAT_PMD_ERR("Unable to reserve memzone for private data\n");
 231                 ret = -ENOMEM;
 232                 goto cleanup;
 233         }
 234         rawdev->dev_private = mz->addr;
 235         rawdev->dev_ops = ops;
 236         rawdev->device = dev;
 237         rawdev->driver_name = IOAT_PMD_RAWDEV_NAME_STR;
 238
 239         idxd = rawdev->dev_private;
 240         *idxd = *base_idxd; /* copy over the main fields already passed in */
 241         idxd->rawdev = rawdev;
 242         idxd->mz = mz;
 243
 244         public = &idxd->public;
 245         public->type = RTE_IDXD_DEV;
 246         public->max_batches = idxd->max_batches;
 247         public->batch_idx_read = 0;
 248         public->batch_idx_write = 0;
 249         /* allocate batch index ring. The +1 is because we can never fully use
 250          * the ring, otherwise read == write means both full and empty.
 251          */
 252         public->batch_idx_ring = rte_zmalloc(NULL,
 253                         sizeof(uint16_t) * (idxd->max_batches + 1), 0);
 254         if (public->batch_idx_ring == NULL) {
 255                 IOAT_PMD_ERR("Unable to reserve memory for batch data\n");
 256                 ret = -ENOMEM;
 257                 goto cleanup;
 258         }
 259
 260         return 0;
 261
 262 cleanup:
 263         if (mz)
 264                 rte_memzone_free(mz);
 265         if (rawdev)
 266                 rte_rawdev_pmd_release(rawdev);
 267
 268         return ret;
 269 }