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, "Batch Ring size: %u\n", rte_idxd->batch_ring_sz);
  88         fprintf(f, "Comp Handle Ring size: %u\n\n", rte_idxd->hdl_ring_sz);
  89
  90         fprintf(f, "Next batch: %u\n", rte_idxd->next_batch);
  91         fprintf(f, "Next batch to be completed: %u\n", rte_idxd->next_completed);
  92         for (i = 0; i < rte_idxd->batch_ring_sz; i++) {
  93                 struct rte_idxd_desc_batch *b = &rte_idxd->batch_ring[i];
  94                 fprintf(f, "Batch %u @%p: submitted=%u, op_count=%u, hdl_end=%u\n",
  95                                 i, b, b->submitted, b->op_count, b->hdl_end);
  96         }
  97
  98         fprintf(f, "\n");
  99         fprintf(f, "Next free hdl: %u\n", rte_idxd->next_free_hdl);
 100         fprintf(f, "Last completed hdl: %u\n", rte_idxd->last_completed_hdl);
 101         fprintf(f, "Next returned hdl: %u\n", rte_idxd->next_ret_hdl);
 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->ring_size = rte_idxd->hdl_ring_sz;
 119                 cfg->hdls_disable = rte_idxd->hdls_disable;
 120         }
 121         return 0;
 122 }
 123
 124 int
 125 idxd_dev_configure(const struct rte_rawdev *dev,
 126                 rte_rawdev_obj_t config, size_t config_size)
 127 {
 128         struct idxd_rawdev *idxd = dev->dev_private;
 129         struct rte_idxd_rawdev *rte_idxd = &idxd->public;
 130         struct rte_ioat_rawdev_config *cfg = config;
 131         uint16_t max_desc = cfg->ring_size;
 132         uint16_t max_batches = max_desc / BATCH_SIZE;
 133         uint16_t i;
 134
 135         if (config_size != sizeof(*cfg))
 136                 return -EINVAL;
 137
 138         if (dev->started) {
 139                 IOAT_PMD_ERR("%s: Error, device is started.", __func__);
 140                 return -EAGAIN;
 141         }
 142
 143         rte_idxd->hdls_disable = cfg->hdls_disable;
 144
 145         /* limit the batches to what can be stored in hardware */
 146         if (max_batches > idxd->max_batches) {
 147                 IOAT_PMD_DEBUG("Ring size of %u is too large for this device, need to limit to %u batches of %u",
 148                                 max_desc, idxd->max_batches, BATCH_SIZE);
 149                 max_batches = idxd->max_batches;
 150                 max_desc = max_batches * BATCH_SIZE;
 151         }
 152         if (!rte_is_power_of_2(max_desc))
 153                 max_desc = rte_align32pow2(max_desc);
 154         IOAT_PMD_DEBUG("Rawdev %u using %u descriptors in %u batches",
 155                         dev->dev_id, max_desc, max_batches);
 156
 157         /* in case we are reconfiguring a device, free any existing memory */
 158         rte_free(rte_idxd->batch_ring);
 159         rte_free(rte_idxd->hdl_ring);
 160
 161         rte_idxd->batch_ring = rte_zmalloc(NULL,
 162                         sizeof(*rte_idxd->batch_ring) * max_batches, 0);
 163         if (rte_idxd->batch_ring == NULL)
 164                 return -ENOMEM;
 165
 166         rte_idxd->hdl_ring = rte_zmalloc(NULL,
 167                         sizeof(*rte_idxd->hdl_ring) * max_desc, 0);
 168         if (rte_idxd->hdl_ring == NULL) {
 169                 rte_free(rte_idxd->batch_ring);
 170                 rte_idxd->batch_ring = NULL;
 171                 return -ENOMEM;
 172         }
 173         rte_idxd->batch_ring_sz = max_batches;
 174         rte_idxd->hdl_ring_sz = max_desc;
 175
 176         for (i = 0; i < rte_idxd->batch_ring_sz; i++) {
 177                 struct rte_idxd_desc_batch *b = &rte_idxd->batch_ring[i];
 178                 b->batch_desc.completion = rte_mem_virt2iova(&b->comp);
 179                 b->batch_desc.desc_addr = rte_mem_virt2iova(&b->null_desc);
 180                 b->batch_desc.op_flags = (idxd_op_batch << IDXD_CMD_OP_SHIFT) |
 181                                 IDXD_FLAG_COMPLETION_ADDR_VALID |
 182                                 IDXD_FLAG_REQUEST_COMPLETION;
 183         }
 184
 185         return 0;
 186 }
 187
 188 int
 189 idxd_rawdev_create(const char *name, struct rte_device *dev,
 190                    const struct idxd_rawdev *base_idxd,
 191                    const struct rte_rawdev_ops *ops)
 192 {
 193         struct idxd_rawdev *idxd;
 194         struct rte_rawdev *rawdev = NULL;
 195         const struct rte_memzone *mz = NULL;
 196         char mz_name[RTE_MEMZONE_NAMESIZE];
 197         int ret = 0;
 198
 199         RTE_BUILD_BUG_ON(sizeof(struct rte_idxd_hw_desc) != 64);
 200         RTE_BUILD_BUG_ON(offsetof(struct rte_idxd_hw_desc, size) != 32);
 201         RTE_BUILD_BUG_ON(sizeof(struct rte_idxd_completion) != 32);
 202
 203         if (!name) {
 204                 IOAT_PMD_ERR("Invalid name of the device!");
 205                 ret = -EINVAL;
 206                 goto cleanup;
 207         }
 208
 209         /* Allocate device structure */
 210         rawdev = rte_rawdev_pmd_allocate(name, sizeof(struct idxd_rawdev),
 211                                          dev->numa_node);
 212         if (rawdev == NULL) {
 213                 IOAT_PMD_ERR("Unable to allocate raw device");
 214                 ret = -ENOMEM;
 215                 goto cleanup;
 216         }
 217
 218         /* Allocate memory for the primary process or else return the memory
 219          * of primary memzone for the secondary process.
 220          */
 221         snprintf(mz_name, sizeof(mz_name), "rawdev%u_private", rawdev->dev_id);
 222         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
 223                 mz = rte_memzone_lookup(mz_name);
 224                 if (mz == NULL) {
 225                         IOAT_PMD_ERR("Unable lookup memzone for private data\n");
 226                         ret = -ENOMEM;
 227                         goto cleanup;
 228                 }
 229                 rawdev->dev_private = mz->addr;
 230                 rawdev->dev_ops = ops;
 231                 rawdev->device = dev;
 232                 return 0;
 233         }
 234         mz = rte_memzone_reserve(mz_name, sizeof(struct idxd_rawdev),
 235                         dev->numa_node, RTE_MEMZONE_IOVA_CONTIG);
 236         if (mz == NULL) {
 237                 IOAT_PMD_ERR("Unable to reserve memzone for private data\n");
 238                 ret = -ENOMEM;
 239                 goto cleanup;
 240         }
 241         rawdev->dev_private = mz->addr;
 242         rawdev->dev_ops = ops;
 243         rawdev->device = dev;
 244         rawdev->driver_name = IOAT_PMD_RAWDEV_NAME_STR;
 245
 246         idxd = rawdev->dev_private;
 247         *idxd = *base_idxd; /* copy over the main fields already passed in */
 248         idxd->public.type = RTE_IDXD_DEV;
 249         idxd->rawdev = rawdev;
 250         idxd->mz = mz;
 251
 252         return 0;
 253
 254 cleanup:
 255         if (rawdev)
 256                 rte_rawdev_pmd_release(rawdev);
 257
 258         return ret;
 259 }