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
32 TAILQ_HEAD(dpbp_dev_list, dpaa2_dpbp_dev);
33 static struct dpbp_dev_list dpbp_dev_list
34 = TAILQ_HEAD_INITIALIZER(dpbp_dev_list); /*!< DPBP device list */
35
36 static int
dpaa2_create_dpbp_device(int vdev_fd __rte_unused,struct vfio_device_info * obj_info __rte_unused,int dpbp_id)37 dpaa2_create_dpbp_device(int vdev_fd __rte_unused,
38 struct vfio_device_info *obj_info __rte_unused,
39 int dpbp_id)
40 {
41 struct dpaa2_dpbp_dev *dpbp_node;
42 int ret;
43 static int register_once;
44
45 /* Allocate DPAA2 dpbp handle */
46 dpbp_node = rte_malloc(NULL, sizeof(struct dpaa2_dpbp_dev), 0);
47 if (!dpbp_node) {
48 DPAA2_BUS_ERR("Memory allocation failed for DPBP Device");
49 return -1;
50 }
51
52 /* Open the dpbp object */
53 dpbp_node->dpbp.regs = dpaa2_get_mcp_ptr(MC_PORTAL_INDEX);
54 ret = dpbp_open(&dpbp_node->dpbp,
55 CMD_PRI_LOW, dpbp_id, &dpbp_node->token);
56 if (ret) {
57 DPAA2_BUS_ERR("Unable to open buffer pool object: err(%d)",
58 ret);
59 rte_free(dpbp_node);
60 return -1;
61 }
62
63 /* Clean the device first */
64 ret = dpbp_reset(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
65 if (ret) {
66 DPAA2_BUS_ERR("Unable to reset buffer pool device. err(%d)",
67 ret);
68 dpbp_close(&dpbp_node->dpbp, CMD_PRI_LOW, dpbp_node->token);
69 rte_free(dpbp_node);
70 return -1;
71 }
72
73 dpbp_node->dpbp_id = dpbp_id;
74 rte_atomic16_init(&dpbp_node->in_use);
75
76 TAILQ_INSERT_TAIL(&dpbp_dev_list, dpbp_node, next);
77
78 if (!register_once) {
79 rte_mbuf_set_platform_mempool_ops(DPAA2_MEMPOOL_OPS_NAME);
80 register_once = 1;
81 }
82
83 return 0;
84 }
85
dpaa2_alloc_dpbp_dev(void)86 struct dpaa2_dpbp_dev *dpaa2_alloc_dpbp_dev(void)
87 {
88 struct dpaa2_dpbp_dev *dpbp_dev = NULL;
89
90 /* Get DPBP dev handle from list using index */
91 TAILQ_FOREACH(dpbp_dev, &dpbp_dev_list, next) {
92 if (dpbp_dev && rte_atomic16_test_and_set(&dpbp_dev->in_use))
93 break;
94 }
95
96 return dpbp_dev;
97 }
98
dpaa2_free_dpbp_dev(struct dpaa2_dpbp_dev * dpbp)99 void dpaa2_free_dpbp_dev(struct dpaa2_dpbp_dev *dpbp)
100 {
101 struct dpaa2_dpbp_dev *dpbp_dev = NULL;
102
103 /* Match DPBP handle and mark it free */
104 TAILQ_FOREACH(dpbp_dev, &dpbp_dev_list, next) {
105 if (dpbp_dev == dpbp) {
106 rte_atomic16_dec(&dpbp_dev->in_use);
107 return;
108 }
109 }
110 }
111
dpaa2_dpbp_supported(void)112 int dpaa2_dpbp_supported(void)
113 {
114 if (TAILQ_EMPTY(&dpbp_dev_list))
115 return -1;
116 return 0;
117 }
118
119 static struct rte_dpaa2_object rte_dpaa2_dpbp_obj = {
120 .dev_type = DPAA2_BPOOL,
121 .create = dpaa2_create_dpbp_device,
122 };
123
124 RTE_PMD_REGISTER_DPAA2_OBJECT(dpbp, rte_dpaa2_dpbp_obj);
125