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1 | /*- |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. | |
5 | * Copyright(c) 2014 6WIND S.A. | |
6 | * All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * * Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * * Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in | |
16 | * the documentation and/or other materials provided with the | |
17 | * distribution. | |
18 | * * Neither the name of Intel Corporation nor the names of its | |
19 | * contributors may be used to endorse or promote products derived | |
20 | * from this software without specific prior written permission. | |
21 | * | |
22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
23 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
24 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
25 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
26 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
27 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
28 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
29 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
30 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
32 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
33 | */ | |
34 | ||
35 | #include <stdio.h> | |
36 | #include <string.h> | |
37 | #include <inttypes.h> | |
38 | #include <sys/queue.h> | |
39 | ||
40 | #include <rte_dev.h> | |
41 | #include <rte_devargs.h> | |
42 | #include <rte_debug.h> | |
43 | #include <rte_devargs.h> | |
44 | #include <rte_log.h> | |
45 | ||
46 | #include "eal_private.h" | |
47 | ||
48 | /** Global list of device drivers. */ | |
49 | static struct rte_driver_list dev_driver_list = | |
50 | TAILQ_HEAD_INITIALIZER(dev_driver_list); | |
51 | /** Global list of device drivers. */ | |
52 | static struct rte_device_list dev_device_list = | |
53 | TAILQ_HEAD_INITIALIZER(dev_device_list); | |
54 | ||
55 | /* register a driver */ | |
56 | void | |
57 | rte_eal_driver_register(struct rte_driver *driver) | |
58 | { | |
59 | TAILQ_INSERT_TAIL(&dev_driver_list, driver, next); | |
60 | } | |
61 | ||
62 | /* unregister a driver */ | |
63 | void | |
64 | rte_eal_driver_unregister(struct rte_driver *driver) | |
65 | { | |
66 | TAILQ_REMOVE(&dev_driver_list, driver, next); | |
67 | } | |
68 | ||
69 | void rte_eal_device_insert(struct rte_device *dev) | |
70 | { | |
71 | TAILQ_INSERT_TAIL(&dev_device_list, dev, next); | |
72 | } | |
73 | ||
74 | void rte_eal_device_remove(struct rte_device *dev) | |
75 | { | |
76 | TAILQ_REMOVE(&dev_device_list, dev, next); | |
77 | } | |
78 | ||
79 | int | |
80 | rte_eal_dev_init(void) | |
81 | { | |
82 | struct rte_devargs *devargs; | |
83 | ||
84 | /* | |
85 | * Note that the dev_driver_list is populated here | |
86 | * from calls made to rte_eal_driver_register from constructor functions | |
87 | * embedded into PMD modules via the RTE_PMD_REGISTER_VDEV macro | |
88 | */ | |
89 | ||
90 | /* call the init function for each virtual device */ | |
91 | TAILQ_FOREACH(devargs, &devargs_list, next) { | |
92 | ||
93 | if (devargs->type != RTE_DEVTYPE_VIRTUAL) | |
94 | continue; | |
95 | ||
96 | if (rte_eal_vdev_init(devargs->virt.drv_name, | |
97 | devargs->args)) { | |
98 | RTE_LOG(ERR, EAL, "failed to initialize %s device\n", | |
99 | devargs->virt.drv_name); | |
100 | return -1; | |
101 | } | |
102 | } | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | int rte_eal_dev_attach(const char *name, const char *devargs) | |
108 | { | |
109 | struct rte_pci_addr addr; | |
110 | ||
111 | if (name == NULL || devargs == NULL) { | |
112 | RTE_LOG(ERR, EAL, "Invalid device or arguments provided\n"); | |
113 | return -EINVAL; | |
114 | } | |
115 | ||
116 | if (eal_parse_pci_DomBDF(name, &addr) == 0) { | |
117 | if (rte_eal_pci_probe_one(&addr) < 0) | |
118 | goto err; | |
119 | ||
120 | } else { | |
121 | if (rte_eal_vdev_init(name, devargs)) | |
122 | goto err; | |
123 | } | |
124 | ||
125 | return 0; | |
126 | ||
127 | err: | |
128 | RTE_LOG(ERR, EAL, "Driver cannot attach the device (%s)\n", name); | |
129 | return -EINVAL; | |
130 | } | |
131 | ||
132 | int rte_eal_dev_detach(const char *name) | |
133 | { | |
134 | struct rte_pci_addr addr; | |
135 | ||
136 | if (name == NULL) { | |
137 | RTE_LOG(ERR, EAL, "Invalid device provided.\n"); | |
138 | return -EINVAL; | |
139 | } | |
140 | ||
141 | if (eal_parse_pci_DomBDF(name, &addr) == 0) { | |
142 | if (rte_eal_pci_detach(&addr) < 0) | |
143 | goto err; | |
144 | } else { | |
145 | if (rte_eal_vdev_uninit(name)) | |
146 | goto err; | |
147 | } | |
148 | return 0; | |
149 | ||
150 | err: | |
151 | RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n", name); | |
152 | return -EINVAL; | |
153 | } |