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 #include <rte_mbuf_pool_ops.h>
  24
  25 #include <fslmc_logs.h>
  26 #include <rte_fslmc.h>
  27 #include <mc/fsl_dpbp.h>
  28 #include "portal/dpaa2_hw_pvt.h"
  29 #include "portal/dpaa2_hw_dpio.h"
  30
  31 TAILQ_HEAD(dpbp_dev_list, dpaa2_dpbp_dev);
  32 static struct dpbp_dev_list dpbp_dev_list
  33         = TAILQ_HEAD_INITIALIZER(dpbp_dev_list); /*!< DPBP device list */
  34
  35 static int
  36 dpaa2_create_dpbp_device(int vdev_fd __rte_unused,
  37                          struct vfio_device_info *obj_info __rte_unused,
  38                          int dpbp_id)
  39 {
  40         struct dpaa2_dpbp_dev *dpbp_node;
  41         int ret;
  42         static int register_once;
  43
  44         /* Allocate DPAA2 dpbp handle */
  45         dpbp_node = rte_malloc(NULL, sizeof(struct dpaa2_dpbp_dev), 0);
  46         if (!dpbp_node) {
  47                 DPAA2_BUS_ERR("Memory allocation failed for DPBP Device");
  48                 return -1;
  49         }
  50
  51         /* Open the dpbp object */
  52         dpbp_node->dpbp.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
  53         ret = dpbp_open(&dpbp_node->dpbp,
  54                         CMD_PRI_LOW, dpbp_id, &dpbp_node->token);
  55         if (ret) {
  56                 DPAA2_BUS_ERR("Unable to open buffer pool object: err(%d)",
  57                               ret);
  58                 rte_free(dpbp_node);
  59                 return -1;
  60         }
  61
  62         /* Clean the device first */
  63         ret = dpbp_reset(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
  64         if (ret) {
  65                 DPAA2_BUS_ERR("Unable to reset buffer pool device. err(%d)",
  66                               ret);
  67                 dpbp_close(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
  68                 rte_free(dpbp_node);
  69                 return -1;
  70         }
  71
  72         dpbp_node->dpbp_id = dpbp_id;
  73         rte_atomic16_init(&dpbp_node->in_use);
  74
  75         TAILQ_INSERT_TAIL(&dpbp_dev_list, dpbp_node, next);
  76
  77         if (!register_once) {
  78                 rte_mbuf_set_platform_mempool_ops(DPAA2_MEMPOOL_OPS_NAME);
  79                 register_once = 1;
  80         }
  81
  82         return 0;
  83 }
  84
  85 struct dpaa2_dpbp_dev *dpaa2_alloc_dpbp_dev(void)
  86 {
  87         struct dpaa2_dpbp_dev *dpbp_dev = NULL;
  88
  89         /* Get DPBP dev handle from list using index */
  90         TAILQ_FOREACH(dpbp_dev, &dpbp_dev_list, next) {
  91                 if (dpbp_dev && rte_atomic16_test_and_set(&dpbp_dev->in_use))
  92                         break;
  93         }
  94
  95         return dpbp_dev;
  96 }
  97
  98 void dpaa2_free_dpbp_dev(struct dpaa2_dpbp_dev *dpbp)
  99 {
 100         struct dpaa2_dpbp_dev *dpbp_dev = NULL;
 101
 102         /* Match DPBP handle and mark it free */
 103         TAILQ_FOREACH(dpbp_dev, &dpbp_dev_list, next) {
 104                 if (dpbp_dev == dpbp) {
 105                         rte_atomic16_dec(&dpbp_dev->in_use);
 106                         return;
 107                 }
 108         }
 109 }
 110
 111 int dpaa2_dpbp_supported(void)
 112 {
 113         if (TAILQ_EMPTY(&dpbp_dev_list))
 114                 return -1;
 115         return 0;
 116 }
 117
 118 static struct rte_dpaa2_object rte_dpaa2_dpbp_obj = {
 119         .dev_type = DPAA2_BPOOL,
 120         .create = dpaa2_create_dpbp_device,
 121 };
 122
 123 RTE_PMD_REGISTER_DPAA2_OBJECT(dpbp, rte_dpaa2_dpbp_obj);