drivers/bus/fslmc/portal/dpaa2_hw_dpbp.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright (c) 2016 Freescale Semiconductor, Inc. All rights reserved.
   4  *   Copyright 2016 NXP
   5  *
   6  */
   7
   8 #include <unistd.h>
   9 #include <stdio.h>
  10 #include <sys/types.h>
  11 #include <string.h>
  12 #include <stdlib.h>
  13 #include <fcntl.h>
  14 #include <errno.h>
  15
  16 #include <rte_malloc.h>
  17 #include <rte_memcpy.h>
  18 #include <rte_string_fns.h>
  19 #include <rte_cycles.h>
  20 #include <rte_kvargs.h>
  21 #include <rte_dev.h>
  22 #include <rte_ethdev_driver.h>
  23
  24 #include <fslmc_logs.h>
  25 #include <rte_fslmc.h>
  26 #include <mc/fsl_dpbp.h>
  27 #include "portal/dpaa2_hw_pvt.h"
  28 #include "portal/dpaa2_hw_dpio.h"
  29
  30 TAILQ_HEAD(dpbp_dev_list, dpaa2_dpbp_dev);
  31 static struct dpbp_dev_list dpbp_dev_list
  32         = TAILQ_HEAD_INITIALIZER(dpbp_dev_list); /*!< DPBP device list */
  33
  34 static int
  35 dpaa2_create_dpbp_device(int vdev_fd __rte_unused,
  36                          struct vfio_device_info *obj_info __rte_unused,
  37                          int dpbp_id)
  38 {
  39         struct dpaa2_dpbp_dev *dpbp_node;
  40         int ret;
  41
  42         /* Allocate DPAA2 dpbp handle */
  43         dpbp_node = rte_malloc(NULL, sizeof(struct dpaa2_dpbp_dev), 0);
  44         if (!dpbp_node) {
  45                 PMD_INIT_LOG(ERR, "Memory allocation failed for DPBP Device");
  46                 return -1;
  47         }
  48
  49         /* Open the dpbp object */
  50         dpbp_node->dpbp.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
  51         ret = dpbp_open(&dpbp_node->dpbp,
  52                         CMD_PRI_LOW, dpbp_id, &dpbp_node->token);
  53         if (ret) {
  54                 PMD_INIT_LOG(ERR, "Resource alloc failure with err code: %d",
  55                              ret);
  56                 rte_free(dpbp_node);
  57                 return -1;
  58         }
  59
  60         /* Clean the device first */
  61         ret = dpbp_reset(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
  62         if (ret) {
  63                 PMD_INIT_LOG(ERR, "Failure cleaning dpbp device with"
  64                                         " error code %d\n", ret);
  65                 dpbp_close(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
  66                 rte_free(dpbp_node);
  67                 return -1;
  68         }
  69
  70         dpbp_node->dpbp_id = dpbp_id;
  71         rte_atomic16_init(&dpbp_node->in_use);
  72
  73         TAILQ_INSERT_TAIL(&dpbp_dev_list, dpbp_node, next);
  74
  75         RTE_LOG(DEBUG, PMD, "DPAA2: Added [dpbp.%d]\n", dpbp_id);
  76
  77         return 0;
  78 }
  79
  80 struct dpaa2_dpbp_dev *dpaa2_alloc_dpbp_dev(void)
  81 {
  82         struct dpaa2_dpbp_dev *dpbp_dev = NULL;
  83
  84         /* Get DPBP dev handle from list using index */
  85         TAILQ_FOREACH(dpbp_dev, &dpbp_dev_list, next) {
  86                 if (dpbp_dev && rte_atomic16_test_and_set(&dpbp_dev->in_use))
  87                         break;
  88         }
  89
  90         return dpbp_dev;
  91 }
  92
  93 void dpaa2_free_dpbp_dev(struct dpaa2_dpbp_dev *dpbp)
  94 {
  95         struct dpaa2_dpbp_dev *dpbp_dev = NULL;
  96
  97         /* Match DPBP handle and mark it free */
  98         TAILQ_FOREACH(dpbp_dev, &dpbp_dev_list, next) {
  99                 if (dpbp_dev == dpbp) {
 100                         rte_atomic16_dec(&dpbp_dev->in_use);
 101                         return;
 102                 }
 103         }
 104 }
 105
 106 int dpaa2_dpbp_supported(void)
 107 {
 108         if (TAILQ_EMPTY(&dpbp_dev_list))
 109                 return -1;
 110         return 0;
 111 }
 112
 113 static struct rte_dpaa2_object rte_dpaa2_dpbp_obj = {
 114         .dev_type = DPAA2_BPOOL,
 115         .create = dpaa2_create_dpbp_device,
 116 };
 117
 118 RTE_PMD_REGISTER_DPAA2_OBJECT(dpbp, rte_dpaa2_dpbp_obj);