source: mainline/uspace/drv/test1/test1.c@ 97a62fe

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 97a62fe was 97a62fe, checked in by Jiri Svoboda <jiri@…>, 14 years ago

Refactor create_function(), delete_function() and register_function() into
ddf_fun_create(), ddf_fun_destroy() and ddf_fun_bind(). This is not just
a rename.

  • Property mode set to 100644
File size: 4.1 KB
Line 
1/*
2 * Copyright (c) 2010 Vojtech Horky
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @file
30 */
31
32#include <assert.h>
33#include <stdio.h>
34#include <errno.h>
35#include <str_error.h>
36#include "test1.h"
37
38static int test1_add_device(device_t *dev);
39
40static driver_ops_t driver_ops = {
41 .add_device = &test1_add_device
42};
43
44static driver_t test1_driver = {
45 .name = NAME,
46 .driver_ops = &driver_ops
47};
48
49/** Register child and inform user about it.
50 *
51 * @param parent Parent device.
52 * @param message Message for the user.
53 * @param name Device name.
54 * @param match_id Device match id.
55 * @param score Device match score.
56 */
57static void register_fun_verbose(device_t *parent, const char *message,
58 const char *name, const char *match_id, int match_score)
59{
60 printf(NAME ": registering child device `%s': %s.\n",
61 name, message);
62
63 int rc = register_function_wrapper(parent, name,
64 match_id, match_score);
65
66 if (rc == EOK) {
67 printf(NAME ": registered function `%s'.\n", name);
68 } else {
69 printf(NAME ": failed to register function `%s' (%s).\n",
70 name, str_error(rc));
71 }
72}
73
74/** Callback when new device is passed to this driver.
75 * This function is the body of the test: it shall register new child
76 * (named `clone') that shall be driven by the same task. When the clone
77 * is added, it registers another child (named `child') that is also driven
78 * by this task. The conditions ensure that we do not recurse indefinitely.
79 * When successful, the device tree shall contain following fragment:
80 *
81 * /virtual/test1
82 * /virtual/test1/clone
83 * /virtual/test1/clone/child
84 *
85 * and devman shall not deadlock.
86 *
87 *
88 * @param dev New device.
89 * @return Error code reporting success of the operation.
90 */
91static int test1_add_device(device_t *dev)
92{
93 function_t *fun_a;
94 int rc;
95
96 printf(NAME ": add_device(name=\"%s\", handle=%d)\n",
97 dev->name, (int) dev->handle);
98
99 fun_a = ddf_fun_create(dev, fun_exposed, "a");
100 if (fun_a == NULL) {
101 printf(NAME ": error creating function 'a'.\n");
102 return ENOMEM;
103 }
104
105 rc = ddf_fun_bind(fun_a);
106 if (rc != EOK) {
107 printf(NAME ": error binding function 'a'.\n");
108 return rc;
109 }
110
111 add_function_to_class(fun_a, "virtual");
112
113 if (str_cmp(dev->name, "null") == 0) {
114 fun_a->ops = &char_device_ops;
115 add_function_to_class(fun_a, "virt-null");
116 } else if (str_cmp(dev->name, "test1") == 0) {
117 register_fun_verbose(dev, "cloning myself ;-)", "clone",
118 "virtual&test1", 10);
119 } else if (str_cmp(dev->name, "clone") == 0) {
120 register_fun_verbose(dev, "run by the same task", "child",
121 "virtual&test1&child", 10);
122 }
123
124 printf(NAME ": device `%s' accepted.\n", dev->name);
125
126 return EOK;
127}
128
129int main(int argc, char *argv[])
130{
131 printf(NAME ": HelenOS test1 virtual device driver\n");
132 return driver_main(&test1_driver);
133}
134
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