drivers/bus/fslmc/portal/dpaa2_hw_dpci.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright 2017 NXP
   4  *
   5  */
   6
   7 #include <unistd.h>
   8 #include <stdio.h>
   9 #include <sys/types.h>
  10 #include <string.h>
  11 #include <stdlib.h>
  12 #include <fcntl.h>
  13 #include <errno.h>
  14
  15 #include <rte_malloc.h>
  16 #include <rte_memcpy.h>
  17 #include <rte_string_fns.h>
  18 #include <rte_cycles.h>
  19 #include <rte_kvargs.h>
  20 #include <rte_dev.h>
  21 #include <rte_ethdev_driver.h>
  22
  23 #include <fslmc_logs.h>
  24 #include <rte_fslmc.h>
  25 #include <mc/fsl_dpci.h>
  26 #include "portal/dpaa2_hw_pvt.h"
  27 #include "portal/dpaa2_hw_dpio.h"
  28
  29 TAILQ_HEAD(dpci_dev_list, dpaa2_dpci_dev);
  30 static struct dpci_dev_list dpci_dev_list
  31         = TAILQ_HEAD_INITIALIZER(dpci_dev_list); /*!< DPCI device list */
  32
  33 static int
  34 rte_dpaa2_create_dpci_device(int vdev_fd __rte_unused,
  35                              struct vfio_device_info *obj_info __rte_unused,
  36                              int dpci_id)
  37 {
  38         struct dpaa2_dpci_dev *dpci_node;
  39         struct dpci_attr attr;
  40         struct dpci_rx_queue_cfg rx_queue_cfg;
  41         struct dpci_rx_queue_attr rx_attr;
  42         struct dpci_tx_queue_attr tx_attr;
  43         int ret, i;
  44
  45         /* Allocate DPAA2 dpci handle */
  46         dpci_node = rte_malloc(NULL, sizeof(struct dpaa2_dpci_dev), 0);
  47         if (!dpci_node) {
  48                 DPAA2_BUS_ERR("Memory allocation failed for DPCI Device");
  49                 return -ENOMEM;
  50         }
  51
  52         /* Open the dpci object */
  53         dpci_node->dpci.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
  54         ret = dpci_open(&dpci_node->dpci,
  55                         CMD_PRI_LOW, dpci_id, &dpci_node->token);
  56         if (ret) {
  57                 DPAA2_BUS_ERR("Resource alloc failure with err code: %d", ret);
  58                 goto err;
  59         }
  60
  61         /* Get the device attributes */
  62         ret = dpci_get_attributes(&dpci_node->dpci,
  63                                   CMD_PRI_LOW, dpci_node->token, &attr);
  64         if (ret != 0) {
  65                 DPAA2_BUS_ERR("Reading device failed with err code: %d", ret);
  66                 goto err;
  67         }
  68
  69         for (i = 0; i < DPAA2_DPCI_MAX_QUEUES; i++) {
  70                 struct dpaa2_queue *rxq;
  71
  72                 memset(&rx_queue_cfg, 0, sizeof(struct dpci_rx_queue_cfg));
  73                 ret = dpci_set_rx_queue(&dpci_node->dpci,
  74                                         CMD_PRI_LOW,
  75                                         dpci_node->token,
  76                                         i, &rx_queue_cfg);
  77                 if (ret) {
  78                         DPAA2_BUS_ERR("Setting Rx queue failed with err code: %d",
  79                                       ret);
  80                         goto err;
  81                 }
  82
  83                 /* Allocate DQ storage for the DPCI Rx queues */
  84                 rxq = &(dpci_node->rx_queue[i]);
  85                 rxq->q_storage = rte_malloc("dq_storage",
  86                                         sizeof(struct queue_storage_info_t),
  87                                         RTE_CACHE_LINE_SIZE);
  88                 if (!rxq->q_storage) {
  89                         DPAA2_BUS_ERR("q_storage allocation failed\n");
  90                         ret = -ENOMEM;
  91                         goto err;
  92                 }
  93
  94                 memset(rxq->q_storage, 0, sizeof(struct queue_storage_info_t));
  95                 ret = dpaa2_alloc_dq_storage(rxq->q_storage);
  96                 if (ret) {
  97                         DPAA2_BUS_ERR("dpaa2_alloc_dq_storage failed\n");
  98                         goto err;
  99                 }
 100         }
 101
 102         /* Enable the device */
 103         ret = dpci_enable(&dpci_node->dpci,
 104                           CMD_PRI_LOW, dpci_node->token);
 105         if (ret != 0) {
 106                 DPAA2_BUS_ERR("Enabling device failed with err code: %d", ret);
 107                 goto err;
 108         }
 109
 110         for (i = 0; i < DPAA2_DPCI_MAX_QUEUES; i++) {
 111                 /* Get the Rx FQID's */
 112                 ret = dpci_get_rx_queue(&dpci_node->dpci,
 113                                         CMD_PRI_LOW,
 114                                         dpci_node->token, i,
 115                                         &rx_attr);
 116                 if (ret != 0) {
 117                         DPAA2_BUS_ERR("Rx queue fetch failed with err code: %d",
 118                                       ret);
 119                         goto err;
 120                 }
 121                 dpci_node->rx_queue[i].fqid = rx_attr.fqid;
 122
 123                 ret = dpci_get_tx_queue(&dpci_node->dpci,
 124                                         CMD_PRI_LOW,
 125                                         dpci_node->token, i,
 126                                         &tx_attr);
 127                 if (ret != 0) {
 128                         DPAA2_BUS_ERR("Reading device failed with err code: %d",
 129                                       ret);
 130                         goto err;
 131                 }
 132                 dpci_node->tx_queue[i].fqid = tx_attr.fqid;
 133         }
 134
 135         dpci_node->dpci_id = dpci_id;
 136         rte_atomic16_init(&dpci_node->in_use);
 137
 138         TAILQ_INSERT_TAIL(&dpci_dev_list, dpci_node, next);
 139
 140         return 0;
 141
 142 err:
 143         for (i = 0; i < DPAA2_DPCI_MAX_QUEUES; i++) {
 144                 struct dpaa2_queue *rxq = &(dpci_node->rx_queue[i]);
 145
 146                 if (rxq->q_storage) {
 147                         dpaa2_free_dq_storage(rxq->q_storage);
 148                         rte_free(rxq->q_storage);
 149                 }
 150         }
 151         rte_free(dpci_node);
 152
 153         return ret;
 154 }
 155
 156 struct dpaa2_dpci_dev *rte_dpaa2_alloc_dpci_dev(void)
 157 {
 158         struct dpaa2_dpci_dev *dpci_dev = NULL;
 159
 160         /* Get DPCI dev handle from list using index */
 161         TAILQ_FOREACH(dpci_dev, &dpci_dev_list, next) {
 162                 if (dpci_dev && rte_atomic16_test_and_set(&dpci_dev->in_use))
 163                         break;
 164         }
 165
 166         return dpci_dev;
 167 }
 168
 169 void rte_dpaa2_free_dpci_dev(struct dpaa2_dpci_dev *dpci)
 170 {
 171         struct dpaa2_dpci_dev *dpci_dev = NULL;
 172
 173         /* Match DPCI handle and mark it free */
 174         TAILQ_FOREACH(dpci_dev, &dpci_dev_list, next) {
 175                 if (dpci_dev == dpci) {
 176                         rte_atomic16_dec(&dpci_dev->in_use);
 177                         return;
 178                 }
 179         }
 180 }
 181
 182 static struct rte_dpaa2_object rte_dpaa2_dpci_obj = {
 183         .dev_type = DPAA2_CI,
 184         .create = rte_dpaa2_create_dpci_device,
 185 };
 186
 187 RTE_PMD_REGISTER_DPAA2_OBJECT(dpci, rte_dpaa2_dpci_obj);