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                 DPAA2_BUS_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                 DPAA2_BUS_ERR("Resource alloc failure with err code: %d", ret);
  57                 rte_free(dpci_node);
  58                 return -1;
  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                 rte_free(dpci_node);
  67                 return -1;
  68         }
  69
  70         /* Set up the Rx Queue */
  71         memset(&rx_queue_cfg, 0, sizeof(struct dpci_rx_queue_cfg));
  72         ret = dpci_set_rx_queue(&dpci_node->dpci,
  73                                 CMD_PRI_LOW,
  74                                 dpci_node->token,
  75                                 0, &rx_queue_cfg);
  76         if (ret) {
  77                 DPAA2_BUS_ERR("Setting Rx queue failed with err code: %d",
  78                               ret);
  79                 rte_free(dpci_node);
  80                 return -1;
  81         }
  82
  83         /* Enable the device */
  84         ret = dpci_enable(&dpci_node->dpci,
  85                           CMD_PRI_LOW, dpci_node->token);
  86         if (ret != 0) {
  87                 DPAA2_BUS_ERR("Enabling device failed with err code: %d", ret);
  88                 rte_free(dpci_node);
  89                 return -1;
  90         }
  91
  92         for (i = 0; i < DPAA2_DPCI_MAX_QUEUES; i++) {
  93                 /* Get the Rx FQID's */
  94                 ret = dpci_get_rx_queue(&dpci_node->dpci,
  95                                         CMD_PRI_LOW,
  96                                         dpci_node->token, i,
  97                                         &rx_attr);
  98                 if (ret != 0) {
  99                         DPAA2_BUS_ERR("Rx queue fetch failed with err code:"
 100                                       " %d", ret);
 101                         rte_free(dpci_node);
 102                         return -1;
 103                 }
 104
 105                 dpci_node->queue[i].fqid = rx_attr.fqid;
 106         }
 107
 108         dpci_node->dpci_id = dpci_id;
 109         rte_atomic16_init(&dpci_node->in_use);
 110
 111         TAILQ_INSERT_TAIL(&dpci_dev_list, dpci_node, next);
 112
 113         return 0;
 114 }
 115
 116 struct dpaa2_dpci_dev *rte_dpaa2_alloc_dpci_dev(void)
 117 {
 118         struct dpaa2_dpci_dev *dpci_dev = NULL;
 119
 120         /* Get DPCI dev handle from list using index */
 121         TAILQ_FOREACH(dpci_dev, &dpci_dev_list, next) {
 122                 if (dpci_dev && rte_atomic16_test_and_set(&dpci_dev->in_use))
 123                         break;
 124         }
 125
 126         return dpci_dev;
 127 }
 128
 129 void rte_dpaa2_free_dpci_dev(struct dpaa2_dpci_dev *dpci)
 130 {
 131         struct dpaa2_dpci_dev *dpci_dev = NULL;
 132
 133         /* Match DPCI handle and mark it free */
 134         TAILQ_FOREACH(dpci_dev, &dpci_dev_list, next) {
 135                 if (dpci_dev == dpci) {
 136                         rte_atomic16_dec(&dpci_dev->in_use);
 137                         return;
 138                 }
 139         }
 140 }
 141
 142 static struct rte_dpaa2_object rte_dpaa2_dpci_obj = {
 143         .dev_type = DPAA2_CI,
 144         .create = rte_dpaa2_create_dpci_device,
 145 };
 146
 147 RTE_PMD_REGISTER_DPAA2_OBJECT(dpci, rte_dpaa2_dpci_obj);