drivers/raw/octeontx2_ep/otx2_ep_rawdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4 #include <string.h>
   5 #include <unistd.h>
   6
   7 #include <rte_bus.h>
   8 #include <rte_bus_pci.h>
   9 #include <rte_eal.h>
  10 #include <rte_lcore.h>
  11 #include <rte_mempool.h>
  12 #include <rte_pci.h>
  13
  14 #include <rte_common.h>
  15 #include <rte_rawdev.h>
  16 #include <rte_rawdev_pmd.h>
  17
  18 #include "otx2_common.h"
  19 #include "otx2_ep_rawdev.h"
  20 #include "otx2_ep_vf.h"
  21
  22 static const struct rte_pci_id pci_sdp_vf_map[] = {
  23         {
  24                 RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM,
  25                                PCI_DEVID_OCTEONTX2_EP_VF)
  26         },
  27         {
  28                 .vendor_id = 0,
  29         },
  30 };
  31
  32 /* SDP_VF default configuration */
  33 const struct sdp_config default_sdp_conf = {
  34         /* IQ attributes */
  35         .iq                        = {
  36                 .max_iqs           = SDP_VF_CFG_IO_QUEUES,
  37                 .instr_type        = SDP_VF_64BYTE_INSTR,
  38                 .pending_list_size = (SDP_VF_MAX_IQ_DESCRIPTORS *
  39                                       SDP_VF_CFG_IO_QUEUES),
  40         },
  41
  42         /* OQ attributes */
  43         .oq                        = {
  44                 .max_oqs           = SDP_VF_CFG_IO_QUEUES,
  45                 .info_ptr          = SDP_VF_OQ_INFOPTR_MODE,
  46                 .refill_threshold  = SDP_VF_OQ_REFIL_THRESHOLD,
  47         },
  48
  49         .num_iqdef_descs           = SDP_VF_MAX_IQ_DESCRIPTORS,
  50         .num_oqdef_descs           = SDP_VF_MAX_OQ_DESCRIPTORS,
  51         .oqdef_buf_size            = SDP_VF_OQ_BUF_SIZE,
  52
  53 };
  54
  55 const struct sdp_config*
  56 sdp_get_defconf(struct sdp_device *sdp_dev __rte_unused)
  57 {
  58         const struct sdp_config *default_conf = NULL;
  59
  60         default_conf = &default_sdp_conf;
  61
  62         return default_conf;
  63 }
  64
  65 static int
  66 sdp_vfdev_exit(struct rte_rawdev *rawdev)
  67 {
  68         struct sdp_device *sdpvf;
  69         uint32_t rawdev_queues, q;
  70
  71         otx2_info("%s:", __func__);
  72
  73         sdpvf = (struct sdp_device *)rawdev->dev_private;
  74
  75         sdpvf->fn_list.disable_io_queues(sdpvf);
  76
  77         rawdev_queues = sdpvf->num_oqs;
  78         for (q = 0; q < rawdev_queues; q++) {
  79                 if (sdp_delete_oqs(sdpvf, q)) {
  80                         otx2_err("Failed to delete OQ:%d", q);
  81                         return -ENOMEM;
  82                 }
  83         }
  84         otx2_info("Num OQs:%d freed", sdpvf->num_oqs);
  85
  86         /* Free the oqbuf_pool */
  87         rte_mempool_free(sdpvf->enqdeq_mpool);
  88         sdpvf->enqdeq_mpool = NULL;
  89
  90         otx2_info("Enqdeq_mpool free done");
  91
  92         rawdev_queues = sdpvf->num_iqs;
  93         for (q = 0; q < rawdev_queues; q++) {
  94                 if (sdp_delete_iqs(sdpvf, q)) {
  95                         otx2_err("Failed to delete IQ:%d", q);
  96                         return -ENOMEM;
  97                 }
  98         }
  99         otx2_sdp_dbg("Num IQs:%d freed", sdpvf->num_iqs);
 100
 101         return 0;
 102 }
 103
 104 static int
 105 sdp_chip_specific_setup(struct sdp_device *sdpvf)
 106 {
 107         struct rte_pci_device *pdev = sdpvf->pci_dev;
 108         uint32_t dev_id = pdev->id.device_id;
 109         int ret;
 110
 111         switch (dev_id) {
 112         case PCI_DEVID_OCTEONTX2_EP_VF:
 113                 sdpvf->chip_id = PCI_DEVID_OCTEONTX2_EP_VF;
 114                 ret = sdp_vf_setup_device(sdpvf);
 115
 116                 break;
 117         default:
 118                 otx2_err("Unsupported device");
 119                 ret = -EINVAL;
 120         }
 121
 122         if (!ret)
 123                 otx2_info("SDP dev_id[%d]", dev_id);
 124
 125         return ret;
 126 }
 127
 128 /* SDP VF device initialization */
 129 static int
 130 sdp_vfdev_init(struct sdp_device *sdpvf)
 131 {
 132         uint32_t rawdev_queues, q;
 133
 134         if (sdp_chip_specific_setup(sdpvf)) {
 135                 otx2_err("Chip specific setup failed");
 136                 goto setup_fail;
 137         }
 138
 139         if (sdpvf->fn_list.setup_device_regs(sdpvf)) {
 140                 otx2_err("Failed to configure device registers");
 141                 goto setup_fail;
 142         }
 143
 144         rawdev_queues = (uint32_t)(sdpvf->sriov_info.rings_per_vf);
 145
 146         /* Rawdev queues setup for enqueue/dequeue */
 147         for (q = 0; q < rawdev_queues; q++) {
 148                 if (sdp_setup_iqs(sdpvf, q)) {
 149                         otx2_err("Failed to setup IQs");
 150                         goto iq_fail;
 151                 }
 152         }
 153         otx2_info("Total[%d] IQs setup", sdpvf->num_iqs);
 154
 155         for (q = 0; q < rawdev_queues; q++) {
 156                 if (sdp_setup_oqs(sdpvf, q)) {
 157                         otx2_err("Failed to setup OQs");
 158                         goto oq_fail;
 159                 }
 160         }
 161         otx2_info("Total [%d] OQs setup", sdpvf->num_oqs);
 162
 163         /* Enable IQ/OQ for this device */
 164         sdpvf->fn_list.enable_io_queues(sdpvf);
 165
 166         /* Send OQ desc credits for OQs, credits are always
 167          * sent after the OQs are enabled.
 168          */
 169         for (q = 0; q < rawdev_queues; q++) {
 170                 rte_write32(sdpvf->droq[q]->nb_desc,
 171                             sdpvf->droq[q]->pkts_credit_reg);
 172
 173                 rte_io_mb();
 174                 otx2_info("OQ[%d] dbells [%d]", q,
 175                 rte_read32(sdpvf->droq[q]->pkts_credit_reg));
 176         }
 177
 178         rte_wmb();
 179
 180         otx2_info("SDP Device is Ready");
 181
 182         return 0;
 183
 184 /* Error handling  */
 185 oq_fail:
 186         /* Free the allocated OQs */
 187         for (q = 0; q < sdpvf->num_oqs; q++)
 188                 sdp_delete_oqs(sdpvf, q);
 189
 190 iq_fail:
 191         /* Free the allocated IQs */
 192         for (q = 0; q < sdpvf->num_iqs; q++)
 193                 sdp_delete_iqs(sdpvf, q);
 194
 195 setup_fail:
 196         return -ENOMEM;
 197 }
 198
 199 static int
 200 sdp_rawdev_start(struct rte_rawdev *dev)
 201 {
 202         dev->started = 1;
 203
 204         return 0;
 205 }
 206
 207 static void
 208 sdp_rawdev_stop(struct rte_rawdev *dev)
 209 {
 210         dev->started = 0;
 211 }
 212
 213 static int
 214 sdp_rawdev_close(struct rte_rawdev *dev)
 215 {
 216         int ret;
 217         ret = sdp_vfdev_exit(dev);
 218         if (ret) {
 219                 otx2_err(" SDP_EP rawdev exit error");
 220                 return ret;
 221         }
 222
 223         return 0;
 224 }
 225
 226 static int
 227 sdp_rawdev_configure(const struct rte_rawdev *dev, rte_rawdev_obj_t config)
 228 {
 229         struct sdp_rawdev_info *app_info = (struct sdp_rawdev_info *)config;
 230         struct sdp_device *sdpvf;
 231
 232         if (app_info == NULL) {
 233                 otx2_err("Application config info [NULL]");
 234                 return -EINVAL;
 235         }
 236
 237         sdpvf = (struct sdp_device *)dev->dev_private;
 238
 239         sdpvf->conf = app_info->app_conf;
 240         sdpvf->enqdeq_mpool = app_info->enqdeq_mpool;
 241
 242         sdp_vfdev_init(sdpvf);
 243
 244         return 0;
 245
 246 }
 247
 248 /* SDP VF endpoint rawdev ops */
 249 static const struct rte_rawdev_ops sdp_rawdev_ops = {
 250         .dev_configure  = sdp_rawdev_configure,
 251         .dev_start      = sdp_rawdev_start,
 252         .dev_stop       = sdp_rawdev_stop,
 253         .dev_close      = sdp_rawdev_close,
 254 };
 255
 256 static int
 257 otx2_sdp_rawdev_probe(struct rte_pci_driver *pci_drv __rte_unused,
 258                       struct rte_pci_device *pci_dev)
 259 {
 260         char name[RTE_RAWDEV_NAME_MAX_LEN];
 261         struct sdp_device *sdpvf = NULL;
 262         struct rte_rawdev *sdp_rawdev;
 263         uint16_t vf_id;
 264
 265         /* Single process support */
 266         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 267                 return 0;
 268
 269         if (pci_dev->mem_resource[0].addr)
 270                 otx2_info("SDP_EP BAR0 is mapped:");
 271         else {
 272                 otx2_err("SDP_EP: Failed to map device BARs");
 273                 otx2_err("BAR0 %p\n BAR2 %p",
 274                         pci_dev->mem_resource[0].addr,
 275                         pci_dev->mem_resource[2].addr);
 276                 return -ENODEV;
 277         }
 278
 279         memset(name, 0, sizeof(name));
 280         snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "SDPEP:%x:%02x.%x",
 281                  pci_dev->addr.bus, pci_dev->addr.devid,
 282                  pci_dev->addr.function);
 283
 284         /* Allocate rawdev pmd */
 285         sdp_rawdev = rte_rawdev_pmd_allocate(name,
 286                                              sizeof(struct sdp_device),
 287                                              rte_socket_id());
 288
 289         if (sdp_rawdev == NULL) {
 290                 otx2_err("SDP_EP VF rawdev allocation failed");
 291                 return -ENOMEM;
 292         }
 293
 294         sdp_rawdev->dev_ops = &sdp_rawdev_ops;
 295         sdp_rawdev->device = &pci_dev->device;
 296         sdp_rawdev->driver_name = pci_dev->driver->driver.name;
 297
 298         sdpvf = (struct sdp_device *)sdp_rawdev->dev_private;
 299         sdpvf->hw_addr = pci_dev->mem_resource[0].addr;
 300         sdpvf->pci_dev = pci_dev;
 301
 302         /* Discover the VF number being probed */
 303         vf_id = ((pci_dev->addr.devid & 0x1F) << 3) |
 304                  (pci_dev->addr.function & 0x7);
 305
 306         vf_id -= 1;
 307         sdpvf->vf_num = vf_id;
 308
 309         otx2_info("SDP_EP VF[%d] probe done", vf_id);
 310
 311         return 0;
 312 }
 313
 314 static int
 315 otx2_sdp_rawdev_remove(struct rte_pci_device *pci_dev)
 316 {
 317         char name[RTE_RAWDEV_NAME_MAX_LEN];
 318         struct rte_rawdev *rawdev;
 319         struct sdp_device *sdpvf;
 320
 321         /* Single process support */
 322         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 323                 return 0;
 324
 325         if (pci_dev == NULL) {
 326                 otx2_err("SDP_EP:invalid pci_dev!");
 327                 return -EINVAL;
 328         }
 329
 330
 331         memset(name, 0, sizeof(name));
 332         snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "SDPEP:%x:%02x.%x",
 333                  pci_dev->addr.bus, pci_dev->addr.devid,
 334                  pci_dev->addr.function);
 335
 336         rawdev = rte_rawdev_pmd_get_named_dev(name);
 337         if (rawdev == NULL) {
 338                 otx2_err("SDP_EP: invalid device name (%s)", name);
 339                 return -EINVAL;
 340         }
 341
 342         sdpvf = (struct sdp_device *)rawdev->dev_private;
 343         otx2_info("Removing SDP_EP VF[%d] ", sdpvf->vf_num);
 344
 345         /* rte_rawdev_close is called by pmd_release */
 346         return rte_rawdev_pmd_release(rawdev);
 347 }
 348
 349 static struct rte_pci_driver rte_sdp_rawdev_pmd = {
 350         .id_table  = pci_sdp_vf_map,
 351         .drv_flags = (RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_NEED_IOVA_AS_VA),
 352         .probe     = otx2_sdp_rawdev_probe,
 353         .remove    = otx2_sdp_rawdev_remove,
 354 };
 355
 356 RTE_PMD_REGISTER_PCI(sdp_rawdev_pci_driver, rte_sdp_rawdev_pmd);
 357 RTE_PMD_REGISTER_PCI_TABLE(sdp_rawdev_pci_driver, pci_sdp_vf_map);
 358 RTE_PMD_REGISTER_KMOD_DEP(sdp_rawdev_pci_driver, "vfio-pci");