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         int ret, i;
  43
  44         /* Allocate DPAA2 dpci handle */
  45         dpci_node = rte_malloc(NULL, sizeof(struct dpaa2_dpci_dev), 0);
  46         if (!dpci_node) {
  47                 PMD_INIT_LOG(ERR, "Memory allocation failed for DPCI Device");
  48                 return -1;
  49         }
  50
  51         /* Open the dpci object */
  52         dpci_node->dpci.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
  53         ret = dpci_open(&dpci_node->dpci,
  54                         CMD_PRI_LOW, dpci_id, &dpci_node->token);
  55         if (ret) {
  56                 PMD_INIT_LOG(ERR, "Resource alloc failure with err code: %d",
  57                              ret);
  58                 rte_free(dpci_node);
  59                 return -1;
  60         }
  61
  62         /* Get the device attributes */
  63         ret = dpci_get_attributes(&dpci_node->dpci,
  64                                   CMD_PRI_LOW, dpci_node->token, &attr);
  65         if (ret != 0) {
  66                 PMD_INIT_LOG(ERR, "Reading device failed with err code: %d",
  67                              ret);
  68                 rte_free(dpci_node);
  69                 return -1;
  70         }
  71
  72         /* Set up the Rx Queue */
  73         memset(&rx_queue_cfg, 0, sizeof(struct dpci_rx_queue_cfg));
  74         ret = dpci_set_rx_queue(&dpci_node->dpci,
  75                                 CMD_PRI_LOW,
  76                                 dpci_node->token,
  77                                 0, &rx_queue_cfg);
  78         if (ret) {
  79                 PMD_INIT_LOG(ERR, "Setting Rx queue failed with err code: %d",
  80                              ret);
  81                 rte_free(dpci_node);
  82                 return -1;
  83         }
  84
  85         /* Enable the device */
  86         ret = dpci_enable(&dpci_node->dpci,
  87                           CMD_PRI_LOW, dpci_node->token);
  88         if (ret != 0) {
  89                 PMD_INIT_LOG(ERR, "Enabling device failed with err code: %d",
  90                              ret);
  91                 rte_free(dpci_node);
  92                 return -1;
  93         }
  94
  95         for (i = 0; i < DPAA2_DPCI_MAX_QUEUES; i++) {
  96                 /* Get the Rx FQID's */
  97                 ret = dpci_get_rx_queue(&dpci_node->dpci,
  98                                         CMD_PRI_LOW,
  99                                         dpci_node->token, i,
 100                                         &rx_attr);
 101                 if (ret != 0) {
 102                         PMD_INIT_LOG(ERR,
 103                                      "Reading device failed with err code: %d",
 104                                 ret);
 105                         rte_free(dpci_node);
 106                         return -1;
 107                 }
 108
 109                 dpci_node->queue[i].fqid = rx_attr.fqid;
 110         }
 111
 112         dpci_node->dpci_id = dpci_id;
 113         rte_atomic16_init(&dpci_node->in_use);
 114
 115         TAILQ_INSERT_TAIL(&dpci_dev_list, dpci_node, next);
 116
 117         RTE_LOG(DEBUG, PMD, "DPAA2: Added [dpci.%d]\n", dpci_id);
 118
 119         return 0;
 120 }
 121
 122 struct dpaa2_dpci_dev *rte_dpaa2_alloc_dpci_dev(void)
 123 {
 124         struct dpaa2_dpci_dev *dpci_dev = NULL;
 125
 126         /* Get DPCI dev handle from list using index */
 127         TAILQ_FOREACH(dpci_dev, &dpci_dev_list, next) {
 128                 if (dpci_dev && rte_atomic16_test_and_set(&dpci_dev->in_use))
 129                         break;
 130         }
 131
 132         return dpci_dev;
 133 }
 134
 135 void rte_dpaa2_free_dpci_dev(struct dpaa2_dpci_dev *dpci)
 136 {
 137         struct dpaa2_dpci_dev *dpci_dev = NULL;
 138
 139         /* Match DPCI handle and mark it free */
 140         TAILQ_FOREACH(dpci_dev, &dpci_dev_list, next) {
 141                 if (dpci_dev == dpci) {
 142                         rte_atomic16_dec(&dpci_dev->in_use);
 143                         return;
 144                 }
 145         }
 146 }
 147
 148 static struct rte_dpaa2_object rte_dpaa2_dpci_obj = {
 149         .dev_type = DPAA2_CI,
 150         .create = rte_dpaa2_create_dpci_device,
 151 };
 152
 153 RTE_PMD_REGISTER_DPAA2_OBJECT(dpci, rte_dpaa2_dpci_obj);