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 /* List of all the memseg information locally maintained in dpaa2 driver. This
  32  * is to optimize the PA_to_VA searches until a better mechanism (algo) is
  33  * available.
  34  */
  35 struct dpaa2_memseg_list rte_dpaa2_memsegs
  36         = TAILQ_HEAD_INITIALIZER(rte_dpaa2_memsegs);
  37
  38 TAILQ_HEAD(dpbp_dev_list, dpaa2_dpbp_dev);
  39 static struct dpbp_dev_list dpbp_dev_list
  40         = TAILQ_HEAD_INITIALIZER(dpbp_dev_list); /*!< DPBP device list */
  41
  42 static int
  43 dpaa2_create_dpbp_device(int vdev_fd __rte_unused,
  44                          struct vfio_device_info *obj_info __rte_unused,
  45                          int dpbp_id)
  46 {
  47         struct dpaa2_dpbp_dev *dpbp_node;
  48         int ret;
  49         static int register_once;
  50
  51         /* Allocate DPAA2 dpbp handle */
  52         dpbp_node = rte_malloc(NULL, sizeof(struct dpaa2_dpbp_dev), 0);
  53         if (!dpbp_node) {
  54                 DPAA2_BUS_ERR("Memory allocation failed for DPBP Device");
  55                 return -1;
  56         }
  57
  58         /* Open the dpbp object */
  59         dpbp_node->dpbp.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
  60         ret = dpbp_open(&dpbp_node->dpbp,
  61                         CMD_PRI_LOW, dpbp_id, &dpbp_node->token);
  62         if (ret) {
  63                 DPAA2_BUS_ERR("Unable to open buffer pool object: err(%d)",
  64                               ret);
  65                 rte_free(dpbp_node);
  66                 return -1;
  67         }
  68
  69         /* Clean the device first */
  70         ret = dpbp_reset(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
  71         if (ret) {
  72                 DPAA2_BUS_ERR("Unable to reset buffer pool device. err(%d)",
  73                               ret);
  74                 dpbp_close(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
  75                 rte_free(dpbp_node);
  76                 return -1;
  77         }
  78
  79         dpbp_node->dpbp_id = dpbp_id;
  80         rte_atomic16_init(&dpbp_node->in_use);
  81
  82         TAILQ_INSERT_TAIL(&dpbp_dev_list, dpbp_node, next);
  83
  84         if (!register_once) {
  85                 rte_mbuf_set_platform_mempool_ops(DPAA2_MEMPOOL_OPS_NAME);
  86                 register_once = 1;
  87         }
  88
  89         return 0;
  90 }
  91
  92 struct dpaa2_dpbp_dev *dpaa2_alloc_dpbp_dev(void)
  93 {
  94         struct dpaa2_dpbp_dev *dpbp_dev = NULL;
  95
  96         /* Get DPBP dev handle from list using index */
  97         TAILQ_FOREACH(dpbp_dev, &dpbp_dev_list, next) {
  98                 if (dpbp_dev && rte_atomic16_test_and_set(&dpbp_dev->in_use))
  99                         break;
 100         }
 101
 102         return dpbp_dev;
 103 }
 104
 105 void dpaa2_free_dpbp_dev(struct dpaa2_dpbp_dev *dpbp)
 106 {
 107         struct dpaa2_dpbp_dev *dpbp_dev = NULL;
 108
 109         /* Match DPBP handle and mark it free */
 110         TAILQ_FOREACH(dpbp_dev, &dpbp_dev_list, next) {
 111                 if (dpbp_dev == dpbp) {
 112                         rte_atomic16_dec(&dpbp_dev->in_use);
 113                         return;
 114                 }
 115         }
 116 }
 117
 118 int dpaa2_dpbp_supported(void)
 119 {
 120         if (TAILQ_EMPTY(&dpbp_dev_list))
 121                 return -1;
 122         return 0;
 123 }
 124
 125 static struct rte_dpaa2_object rte_dpaa2_dpbp_obj = {
 126         .dev_type = DPAA2_BPOOL,
 127         .create = dpaa2_create_dpbp_device,
 128 };
 129
 130 RTE_PMD_REGISTER_DPAA2_OBJECT(dpbp, rte_dpaa2_dpbp_obj);