drivers/crypto/ccp/rte_ccp_pmd.c

   1 /*   SPDX-License-Identifier: BSD-3-Clause
   2  *   Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved.
   3  */
   4
   5 #include <rte_bus_pci.h>
   6 #include <rte_bus_vdev.h>
   7 #include <rte_common.h>
   8 #include <rte_config.h>
   9 #include <rte_cryptodev.h>
  10 #include <rte_cryptodev_pmd.h>
  11 #include <rte_pci.h>
  12 #include <rte_dev.h>
  13 #include <rte_malloc.h>
  14
  15 #include "ccp_dev.h"
  16 #include "ccp_pmd_private.h"
  17
  18 /**
  19  * Global static parameter used to find if CCP device is already initialized.
  20  */
  21 static unsigned int ccp_pmd_init_done;
  22 uint8_t ccp_cryptodev_driver_id;
  23
  24 static uint16_t
  25 ccp_pmd_enqueue_burst(void *queue_pair __rte_unused,
  26                       struct rte_crypto_op **ops __rte_unused,
  27                       uint16_t nb_ops __rte_unused)
  28 {
  29         uint16_t enq_cnt = 0;
  30
  31         return enq_cnt;
  32 }
  33
  34 static uint16_t
  35 ccp_pmd_dequeue_burst(void *queue_pair __rte_unused,
  36                       struct rte_crypto_op **ops __rte_unused,
  37                       uint16_t nb_ops __rte_unused)
  38 {
  39         uint16_t nb_dequeued = 0;
  40
  41         return nb_dequeued;
  42 }
  43
  44 /*
  45  * The set of PCI devices this driver supports
  46  */
  47 static struct rte_pci_id ccp_pci_id[] = {
  48         {
  49                 RTE_PCI_DEVICE(0x1022, 0x1456), /* AMD CCP-5a */
  50         },
  51         {
  52                 RTE_PCI_DEVICE(0x1022, 0x1468), /* AMD CCP-5b */
  53         },
  54         {.device_id = 0},
  55 };
  56
  57 /** Remove ccp pmd */
  58 static int
  59 cryptodev_ccp_remove(struct rte_vdev_device *dev)
  60 {
  61         const char *name;
  62
  63         ccp_pmd_init_done = 0;
  64         name = rte_vdev_device_name(dev);
  65         if (name == NULL)
  66                 return -EINVAL;
  67
  68         RTE_LOG(INFO, PMD, "Closing ccp device %s on numa socket %u\n",
  69                         name, rte_socket_id());
  70
  71         return 0;
  72 }
  73
  74 /** Create crypto device */
  75 static int
  76 cryptodev_ccp_create(const char *name,
  77                      struct rte_vdev_device *vdev,
  78                      struct rte_cryptodev_pmd_init_params *init_params)
  79 {
  80         struct rte_cryptodev *dev;
  81         struct ccp_private *internals;
  82         uint8_t cryptodev_cnt = 0;
  83
  84         if (init_params->name[0] == '\0')
  85                 snprintf(init_params->name, sizeof(init_params->name),
  86                                 "%s", name);
  87
  88         dev = rte_cryptodev_pmd_create(init_params->name,
  89                                        &vdev->device,
  90                                        init_params);
  91         if (dev == NULL) {
  92                 CCP_LOG_ERR("failed to create cryptodev vdev");
  93                 goto init_error;
  94         }
  95
  96         cryptodev_cnt = ccp_probe_devices(ccp_pci_id);
  97
  98         if (cryptodev_cnt == 0) {
  99                 CCP_LOG_ERR("failed to detect CCP crypto device");
 100                 goto init_error;
 101         }
 102
 103         printf("CCP : Crypto device count = %d\n", cryptodev_cnt);
 104         dev->driver_id = ccp_cryptodev_driver_id;
 105
 106         /* register rx/tx burst functions for data path */
 107         dev->dev_ops = ccp_pmd_ops;
 108         dev->enqueue_burst = ccp_pmd_enqueue_burst;
 109         dev->dequeue_burst = ccp_pmd_dequeue_burst;
 110
 111         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 112                         RTE_CRYPTODEV_FF_HW_ACCELERATED |
 113                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING;
 114
 115         internals = dev->data->dev_private;
 116
 117         internals->max_nb_qpairs = init_params->max_nb_queue_pairs;
 118         internals->max_nb_sessions = init_params->max_nb_sessions;
 119         internals->crypto_num_dev = cryptodev_cnt;
 120
 121         return 0;
 122
 123 init_error:
 124         CCP_LOG_ERR("driver %s: %s() failed",
 125                     init_params->name, __func__);
 126         cryptodev_ccp_remove(vdev);
 127
 128         return -EFAULT;
 129 }
 130
 131 /** Probe ccp pmd */
 132 static int
 133 cryptodev_ccp_probe(struct rte_vdev_device *vdev)
 134 {
 135         int rc = 0;
 136         const char *name;
 137         struct rte_cryptodev_pmd_init_params init_params = {
 138                 "",
 139                 sizeof(struct ccp_private),
 140                 rte_socket_id(),
 141                 CCP_PMD_MAX_QUEUE_PAIRS,
 142                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_SESSIONS
 143         };
 144         const char *input_args;
 145
 146         if (ccp_pmd_init_done) {
 147                 RTE_LOG(INFO, PMD, "CCP PMD already initialized\n");
 148                 return -EFAULT;
 149         }
 150         name = rte_vdev_device_name(vdev);
 151         if (name == NULL)
 152                 return -EINVAL;
 153
 154         input_args = rte_vdev_device_args(vdev);
 155         rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
 156         init_params.max_nb_queue_pairs = CCP_PMD_MAX_QUEUE_PAIRS;
 157
 158         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 159                         init_params.socket_id);
 160         RTE_LOG(INFO, PMD, "Max number of queue pairs = %d\n",
 161                         init_params.max_nb_queue_pairs);
 162         RTE_LOG(INFO, PMD, "Max number of sessions = %d\n",
 163                         init_params.max_nb_sessions);
 164
 165         rc = cryptodev_ccp_create(name, vdev, &init_params);
 166         if (rc)
 167                 return rc;
 168         ccp_pmd_init_done = 1;
 169         return 0;
 170 }
 171
 172 static struct rte_vdev_driver cryptodev_ccp_pmd_drv = {
 173         .probe = cryptodev_ccp_probe,
 174         .remove = cryptodev_ccp_remove
 175 };
 176
 177 static struct cryptodev_driver ccp_crypto_drv;
 178
 179 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_CCP_PMD, cryptodev_ccp_pmd_drv);
 180 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_CCP_PMD,
 181         "max_nb_queue_pairs=<int> max_nb_sessions=<int> socket_id=<int>");
 182 RTE_PMD_REGISTER_CRYPTO_DRIVER(ccp_crypto_drv, cryptodev_ccp_pmd_drv.driver,
 183                                ccp_cryptodev_driver_id);