mirror of https://github.com/F-Stack/f-stack.git
140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright 2017 NXP.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of NXP nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <string.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <rte_malloc.h>
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#include <rte_memcpy.h>
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#include <rte_string_fns.h>
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#include <rte_cycles.h>
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#include <rte_kvargs.h>
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#include <rte_dev.h>
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#include <rte_ethdev.h>
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#include <rte_fslmc.h>
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#include <mc/fsl_dpcon.h>
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#include <portal/dpaa2_hw_pvt.h>
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#include "dpaa2_eventdev.h"
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TAILQ_HEAD(dpcon_dev_list, dpaa2_dpcon_dev);
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static struct dpcon_dev_list dpcon_dev_list
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= TAILQ_HEAD_INITIALIZER(dpcon_dev_list); /*!< DPCON device list */
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static int
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rte_dpaa2_create_dpcon_device(int dev_fd __rte_unused,
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struct vfio_device_info *obj_info __rte_unused,
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int dpcon_id)
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{
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struct dpaa2_dpcon_dev *dpcon_node;
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struct dpcon_attr attr;
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int ret;
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/* Allocate DPAA2 dpcon handle */
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dpcon_node = rte_malloc(NULL, sizeof(struct dpaa2_dpcon_dev), 0);
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if (!dpcon_node) {
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PMD_DRV_LOG(ERR, "Memory allocation failed for DPCON Device");
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return -1;
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}
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/* Open the dpcon object */
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dpcon_node->dpcon.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
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ret = dpcon_open(&dpcon_node->dpcon,
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CMD_PRI_LOW, dpcon_id, &dpcon_node->token);
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if (ret) {
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PMD_DRV_LOG(ERR, "Resource alloc failure with err code: %d",
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ret);
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rte_free(dpcon_node);
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return -1;
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}
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/* Get the device attributes */
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ret = dpcon_get_attributes(&dpcon_node->dpcon,
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CMD_PRI_LOW, dpcon_node->token, &attr);
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if (ret != 0) {
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PMD_DRV_LOG(ERR, "Reading device failed with err code: %d",
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ret);
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rte_free(dpcon_node);
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return -1;
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}
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/* Updating device specific private information*/
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dpcon_node->qbman_ch_id = attr.qbman_ch_id;
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dpcon_node->num_priorities = attr.num_priorities;
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dpcon_node->dpcon_id = dpcon_id;
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rte_atomic16_init(&dpcon_node->in_use);
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TAILQ_INSERT_TAIL(&dpcon_dev_list, dpcon_node, next);
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RTE_LOG(DEBUG, PMD, "DPAA2: Added [dpcon.%d]\n", dpcon_id);
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return 0;
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}
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struct dpaa2_dpcon_dev *rte_dpaa2_alloc_dpcon_dev(void)
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{
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struct dpaa2_dpcon_dev *dpcon_dev = NULL;
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/* Get DPCON dev handle from list using index */
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TAILQ_FOREACH(dpcon_dev, &dpcon_dev_list, next) {
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if (dpcon_dev && rte_atomic16_test_and_set(&dpcon_dev->in_use))
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break;
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}
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return dpcon_dev;
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}
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void rte_dpaa2_free_dpcon_dev(struct dpaa2_dpcon_dev *dpcon)
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{
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struct dpaa2_dpcon_dev *dpcon_dev = NULL;
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/* Match DPCON handle and mark it free */
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TAILQ_FOREACH(dpcon_dev, &dpcon_dev_list, next) {
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if (dpcon_dev == dpcon) {
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rte_atomic16_dec(&dpcon_dev->in_use);
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return;
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}
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}
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}
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static struct rte_dpaa2_object rte_dpaa2_dpcon_obj = {
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.dev_type = DPAA2_CON,
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.create = rte_dpaa2_create_dpcon_device,
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};
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RTE_PMD_REGISTER_DPAA2_OBJECT(dpcon, rte_dpaa2_dpcon_obj);
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