Subversion Repositories HelenOS

Rev

Rev 3076 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2547 cejka 1
/*
2
 * Copyright (c) 2007 Josef Cejka
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
/** @addtogroup devmap
30
 * @{
31
 */
32
 
33
#ifndef DEVMAP_DEVMAP_H_
34
#define DEVMAP_DEVMAP_H_
35
 
2550 cejka 36
#include <ipc/ipc.h>
2555 cejka 37
#include <libadt/list.h>
2550 cejka 38
 
2555 cejka 39
#define DEVMAP_NAME_MAXLEN 512
40
 
2547 cejka 41
typedef enum {
2594 cejka 42
    DEVMAP_DRIVER_REGISTER = IPC_FIRST_USER_METHOD,
43
    DEVMAP_DRIVER_UNREGISTER,
44
    DEVMAP_DEVICE_REGISTER,
45
    DEVMAP_DEVICE_UNREGISTER,
46
    DEVMAP_DEVICE_GET_NAME,
47
    DEVMAP_DEVICE_GET_HANDLE
2547 cejka 48
} devmap_request_t;
49
 
2594 cejka 50
/** Representation of device driver.
51
 * Each driver is responsible for a set of devices.
52
 */
53
typedef struct {
54
        /** Pointers to previous and next drivers in linked list */
55
    link_t drivers;
56
        /** Pointer to the linked list of devices controlled by
57
         * this driver */
58
    link_t devices;
59
        /** Phone asociated with this driver */
60
    ipcarg_t phone;
61
        /** Device driver name */
62
    char *name;
63
        /** Futex for list of devices owned by this driver */
64
    atomic_t devices_futex;
65
} devmap_driver_t;
2555 cejka 66
 
67
/** Info about registered device
68
 *
69
 */
70
typedef struct {
2594 cejka 71
        /** Pointer to the previous and next device in the list of all devices */
72
    link_t devices;
73
        /** Pointer to the previous and next device in the list of devices
74
         owned by one driver */
75
    link_t driver_devices;
76
        /** Unique device identifier  */
2555 cejka 77
    int handle;
2594 cejka 78
        /** Device name */
2555 cejka 79
    char *name;
2594 cejka 80
        /** Device driver handling this device */
81
    devmap_driver_t *driver;
2555 cejka 82
} devmap_device_t;
83
 
2635 cejka 84
/** Interface provided by devmap.
85
 * Every process that connects to devmap must ask one of following
86
 * interfaces otherwise connection will be refused.
2594 cejka 87
 */
88
typedef enum {
2635 cejka 89
        /** Connect as device driver */
90
    DEVMAP_DRIVER = 1
91
        /** Connect as client */
92
    DEVMAP_CLIENT,
93
        /** Create new connection to instance of device that
94
         * is specified by second argument of call. */
95
    DEVMAP_CONNECT_TO_DEVICE
2594 cejka 96
} devmap_interface_t;
97
 
2547 cejka 98
#endif
99