drivers/bus/fslmc/portal/dpaa2_hw_dpbp.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (c) 2016 Freescale Semiconductor, Inc. All rights reserved.
   5  *   Copyright (c) 2016 NXP. All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Freescale Semiconductor, Inc nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <unistd.h>
  35 #include <stdio.h>
  36 #include <sys/types.h>
  37 #include <string.h>
  38 #include <stdlib.h>
  39 #include <fcntl.h>
  40 #include <errno.h>
  41
  42 #include <rte_malloc.h>
  43 #include <rte_memcpy.h>
  44 #include <rte_string_fns.h>
  45 #include <rte_cycles.h>
  46 #include <rte_kvargs.h>
  47 #include <rte_dev.h>
  48 #include <rte_ethdev.h>
  49
  50 #include <fslmc_logs.h>
  51 #include <fslmc_vfio.h>
  52 #include <mc/fsl_dpbp.h>
  53 #include "portal/dpaa2_hw_pvt.h"
  54 #include "portal/dpaa2_hw_dpio.h"
  55
  56 TAILQ_HEAD(dpbp_device_list, dpaa2_dpbp_dev);
  57 static struct dpbp_device_list *dpbp_dev_list; /*!< DPBP device list */
  58
  59 int
  60 dpaa2_create_dpbp_device(
  61                 int dpbp_id)
  62 {
  63         struct dpaa2_dpbp_dev *dpbp_node;
  64         int ret;
  65
  66         if (!dpbp_dev_list) {
  67                 dpbp_dev_list = malloc(sizeof(struct dpbp_device_list));
  68                 if (!dpbp_dev_list) {
  69                         PMD_INIT_LOG(ERR, "Memory alloc failed in DPBP list\n");
  70                         return -1;
  71                 }
  72                 /* Initialize the DPBP List */
  73                 TAILQ_INIT(dpbp_dev_list);
  74         }
  75
  76         /* Allocate DPAA2 dpbp handle */
  77         dpbp_node = (struct dpaa2_dpbp_dev *)
  78                         malloc(sizeof(struct dpaa2_dpbp_dev));
  79         if (!dpbp_node) {
  80                 PMD_INIT_LOG(ERR, "Memory allocation failed for DPBP Device");
  81                 return -1;
  82         }
  83
  84         /* Open the dpbp object */
  85         dpbp_node->dpbp.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
  86         ret = dpbp_open(&dpbp_node->dpbp,
  87                         CMD_PRI_LOW, dpbp_id, &dpbp_node->token);
  88         if (ret) {
  89                 PMD_INIT_LOG(ERR, "Resource alloc failure with err code: %d",
  90                              ret);
  91                 free(dpbp_node);
  92                 return -1;
  93         }
  94
  95         /* Clean the device first */
  96         ret = dpbp_reset(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
  97         if (ret) {
  98                 PMD_INIT_LOG(ERR, "Failure cleaning dpbp device with"
  99                                         " error code %d\n", ret);
 100                 dpbp_close(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
 101                 free(dpbp_node);
 102                 return -1;
 103         }
 104
 105         dpbp_node->dpbp_id = dpbp_id;
 106         rte_atomic16_init(&dpbp_node->in_use);
 107
 108         TAILQ_INSERT_HEAD(dpbp_dev_list, dpbp_node, next);
 109
 110         PMD_INIT_LOG(DEBUG, "Buffer pool resource initialized %d", dpbp_id);
 111
 112         return 0;
 113 }
 114
 115 struct dpaa2_dpbp_dev *dpaa2_alloc_dpbp_dev(void)
 116 {
 117         struct dpaa2_dpbp_dev *dpbp_dev = NULL;
 118
 119         /* Get DPBP dev handle from list using index */
 120         TAILQ_FOREACH(dpbp_dev, dpbp_dev_list, next) {
 121                 if (dpbp_dev && rte_atomic16_test_and_set(&dpbp_dev->in_use))
 122                         break;
 123         }
 124
 125         return dpbp_dev;
 126 }
 127
 128 void dpaa2_free_dpbp_dev(struct dpaa2_dpbp_dev *dpbp)
 129 {
 130         struct dpaa2_dpbp_dev *dpbp_dev = NULL;
 131
 132         /* Match DPBP handle and mark it free */
 133         TAILQ_FOREACH(dpbp_dev, dpbp_dev_list, next) {
 134                 if (dpbp_dev == dpbp) {
 135                         rte_atomic16_dec(&dpbp_dev->in_use);
 136                         return;
 137                 }
 138         }
 139 }