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4401 svoboda 1
/*
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 * Copyright (c) 2007 Josef Cejka
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 * Copyright (c) 2009 Jiri Svoboda
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 * All rights reserved.
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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 the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT 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 OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <string.h>
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#include <ipc/ipc.h>
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#include <ipc/services.h>
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#include <ipc/devmap.h>
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#include <devmap.h>
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#include <async.h>
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#include <errno.h>
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4416 decky 38
static int devmap_phone_driver = -1;
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static int devmap_phone_client = -1;
4401 svoboda 40
 
41
/** Get phone to device mapper task. */
4416 decky 42
int devmap_get_phone(devmap_interface_t iface, unsigned int flags)
4401 svoboda 43
{
4416 decky 44
    switch (iface) {
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    case DEVMAP_DRIVER:
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        if (devmap_phone_driver >= 0)
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            return devmap_phone_driver;
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49
        if (flags & IPC_FLAG_BLOCKING)
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            devmap_phone_driver = ipc_connect_me_to_blocking(PHONE_NS,
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                SERVICE_DEVMAP, DEVMAP_DRIVER, 0);
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        else
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            devmap_phone_driver = ipc_connect_me_to(PHONE_NS,
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                SERVICE_DEVMAP, DEVMAP_DRIVER, 0);
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56
        return devmap_phone_driver;
57
    case DEVMAP_CLIENT:
58
        if (devmap_phone_client >= 0)
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            return devmap_phone_client;
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61
        if (flags & IPC_FLAG_BLOCKING)
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            devmap_phone_client = ipc_connect_me_to_blocking(PHONE_NS,
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                SERVICE_DEVMAP, DEVMAP_CLIENT, 0);
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        else
65
            devmap_phone_client = ipc_connect_me_to(PHONE_NS,
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                SERVICE_DEVMAP, DEVMAP_CLIENT, 0);
67
 
68
        return devmap_phone_client;
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    default:
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        return -1;
71
    }
72
}
4401 svoboda 73
 
4416 decky 74
void devmap_hangup_phone(devmap_interface_t iface)
75
{
76
    switch (iface) {
77
    case DEVMAP_DRIVER:
78
        if (devmap_phone_driver >= 0) {
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            ipc_hangup(devmap_phone_driver);
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            devmap_phone_driver = -1;
81
        }
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        break;
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    case DEVMAP_CLIENT:
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        if (devmap_phone_client >= 0) {
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            ipc_hangup(devmap_phone_client);
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            devmap_phone_client = -1;
87
        }
88
        break;
89
    default:
90
        break;
4401 svoboda 91
    }
92
}
93
 
94
/** Register new driver with devmap. */
95
int devmap_driver_register(const char *name, async_client_conn_t conn)
96
{
4416 decky 97
    int phone = devmap_get_phone(DEVMAP_DRIVER, IPC_FLAG_BLOCKING);
98
 
99
    if (phone < 0)
4401 svoboda 100
        return phone;
101
 
4474 decky 102
    async_serialize_start();
103
 
4416 decky 104
    ipc_call_t answer;
105
    aid_t req = async_send_2(phone, DEVMAP_DRIVER_REGISTER, 0, 0, &answer);
106
 
107
    ipcarg_t retval = ipc_data_write_start(phone, name, str_size(name) + 1);
108
 
4401 svoboda 109
    if (retval != EOK) {
110
        async_wait_for(req, NULL);
4474 decky 111
        async_serialize_end();
4401 svoboda 112
        return -1;
113
    }
4416 decky 114
 
4401 svoboda 115
    async_set_client_connection(conn);
4416 decky 116
 
117
    ipcarg_t callback_phonehash;
4401 svoboda 118
    ipc_connect_to_me(phone, 0, 0, 0, &callback_phonehash);
119
    async_wait_for(req, &retval);
4416 decky 120
 
4474 decky 121
    async_serialize_end();
122
 
4416 decky 123
    return retval;
4401 svoboda 124
}
125
 
4416 decky 126
/** Register new device.
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 *
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 * @param name   Device name.
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 * @param handle Output: Handle to the created instance of device.
130
 *
131
 */
132
int devmap_device_register(const char *name, dev_handle_t *handle)
4401 svoboda 133
{
4416 decky 134
    int phone = devmap_get_phone(DEVMAP_DRIVER, IPC_FLAG_BLOCKING);
135
 
136
    if (phone < 0)
137
        return phone;
138
 
4474 decky 139
    async_serialize_start();
140
 
4401 svoboda 141
    ipc_call_t answer;
4416 decky 142
    aid_t req = async_send_2(phone, DEVMAP_DEVICE_REGISTER, 0, 0,
143
        &answer);
144
 
145
    ipcarg_t retval = ipc_data_write_start(phone, name, str_size(name) + 1);
146
 
147
    if (retval != EOK) {
148
        async_wait_for(req, NULL);
4474 decky 149
        async_serialize_end();
4416 decky 150
        return retval;
151
    }
152
 
153
    async_wait_for(req, &retval);
154
 
4474 decky 155
    async_serialize_end();
156
 
4416 decky 157
    if (retval != EOK) {
158
        if (handle != NULL)
159
            *handle = -1;
160
        return retval;
161
    }
162
 
163
    if (handle != NULL)
164
        *handle = (dev_handle_t) IPC_GET_ARG1(answer);
165
 
166
    return retval;
167
}
4401 svoboda 168
 
4416 decky 169
int devmap_device_get_handle(const char *name, dev_handle_t *handle, unsigned int flags)
170
{
171
    int phone = devmap_get_phone(DEVMAP_CLIENT, flags);
172
 
4401 svoboda 173
    if (phone < 0)
174
        return phone;
4416 decky 175
 
4474 decky 176
    async_serialize_start();
177
 
4416 decky 178
    ipc_call_t answer;
179
    aid_t req = async_send_2(phone, DEVMAP_DEVICE_GET_HANDLE, flags, 0,
4401 svoboda 180
        &answer);
4416 decky 181
 
182
    ipcarg_t retval = ipc_data_write_start(phone, name, str_size(name) + 1);
183
 
4401 svoboda 184
    if (retval != EOK) {
185
        async_wait_for(req, NULL);
4474 decky 186
        async_serialize_end();
4401 svoboda 187
        return retval;
188
    }
4416 decky 189
 
4401 svoboda 190
    async_wait_for(req, &retval);
4416 decky 191
 
4474 decky 192
    async_serialize_end();
193
 
4401 svoboda 194
    if (retval != EOK) {
195
        if (handle != NULL)
4549 svoboda 196
            *handle = (dev_handle_t) -1;
4401 svoboda 197
        return retval;
198
    }
4416 decky 199
 
4401 svoboda 200
    if (handle != NULL)
4416 decky 201
        *handle = (dev_handle_t) IPC_GET_ARG1(answer);
202
 
4401 svoboda 203
    return retval;
204
}
205
 
206
int devmap_device_connect(dev_handle_t handle, unsigned int flags)
207
{
208
    int phone;
4416 decky 209
 
4401 svoboda 210
    if (flags & IPC_FLAG_BLOCKING) {
211
        phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_DEVMAP,
212
            DEVMAP_CONNECT_TO_DEVICE, handle);
213
    } else {
214
        phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP,
215
            DEVMAP_CONNECT_TO_DEVICE, handle);
216
    }
4416 decky 217
 
4401 svoboda 218
    return phone;
219
}
220
 
4416 decky 221
ipcarg_t devmap_device_get_count(void)
4401 svoboda 222
{
4416 decky 223
    int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
224
 
225
    if (phone < 0)
226
        return 0;
227
 
228
    ipcarg_t count;
4474 decky 229
    int retval = async_req_0_1(phone, DEVMAP_DEVICE_GET_COUNT, &count);
4416 decky 230
    if (retval != EOK)
231
        return 0;
232
 
233
    return count;
234
}
235
 
236
ipcarg_t devmap_device_get_devices(ipcarg_t count, dev_desc_t *data)
237
{
238
    int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
239
 
240
    if (phone < 0)
241
        return 0;
242
 
4474 decky 243
    async_serialize_start();
244
 
4401 svoboda 245
    ipc_call_t answer;
4416 decky 246
    aid_t req = async_send_0(phone, DEVMAP_DEVICE_GET_DEVICES, &answer);
247
 
248
    ipcarg_t retval = ipc_data_read_start(phone, data, count * sizeof(dev_desc_t));
249
 
4401 svoboda 250
    if (retval != EOK) {
251
        async_wait_for(req, NULL);
4474 decky 252
        async_serialize_end();
4416 decky 253
        return 0;
4401 svoboda 254
    }
4416 decky 255
 
4401 svoboda 256
    async_wait_for(req, &retval);
4416 decky 257
 
4474 decky 258
    async_serialize_end();
259
 
4416 decky 260
    if (retval != EOK)
261
        return 0;
262
 
263
    return IPC_GET_ARG1(answer);
4401 svoboda 264
}