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1 | /* |
1 | /* |
2 | * Copyright (c) 2007 Josef Cejka |
2 | * Copyright (c) 2007 Josef Cejka |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup devmap |
29 | /** @addtogroup devmap |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | #ifndef DEVMAP_DEVMAP_H_ |
33 | #ifndef DEVMAP_DEVMAP_H_ |
34 | #define DEVMAP_DEVMAP_H_ |
34 | #define DEVMAP_DEVMAP_H_ |
35 | 35 | ||
36 | #include <atomic.h> |
36 | #include <atomic.h> |
37 | #include <ipc/ipc.h> |
37 | #include <ipc/ipc.h> |
38 | #include <libadt/list.h> |
38 | #include <libadt/list.h> |
39 | 39 | ||
40 | #define DEVMAP_NAME_MAXLEN 512 |
40 | #define DEVMAP_NAME_MAXLEN 255 |
- | 41 | ||
- | 42 | typedef ipcarg_t dev_handle_t; |
|
41 | 43 | ||
42 | typedef enum { |
44 | typedef enum { |
43 | DEVMAP_DRIVER_REGISTER = IPC_FIRST_USER_METHOD, |
45 | DEVMAP_DRIVER_REGISTER = IPC_FIRST_USER_METHOD, |
44 | DEVMAP_DRIVER_UNREGISTER, |
46 | DEVMAP_DRIVER_UNREGISTER, |
45 | DEVMAP_DEVICE_REGISTER, |
47 | DEVMAP_DEVICE_REGISTER, |
46 | DEVMAP_DEVICE_UNREGISTER, |
48 | DEVMAP_DEVICE_UNREGISTER, |
47 | DEVMAP_DEVICE_GET_NAME, |
49 | DEVMAP_DEVICE_GET_NAME, |
48 | DEVMAP_DEVICE_GET_HANDLE |
50 | DEVMAP_DEVICE_GET_HANDLE, |
- | 51 | DEVMAP_DEVICE_GET_COUNT, |
|
- | 52 | DEVMAP_DEVICE_GET_DEVICES |
|
49 | } devmap_request_t; |
53 | } devmap_request_t; |
50 | 54 | ||
51 | /** Representation of device driver. |
- | |
52 | * Each driver is responsible for a set of devices. |
- | |
53 | */ |
- | |
54 | typedef struct { |
- | |
55 | /** Pointers to previous and next drivers in linked list */ |
- | |
56 | link_t drivers; |
- | |
57 | /** Pointer to the linked list of devices controlled by |
- | |
58 | * this driver */ |
- | |
59 | link_t devices; |
- | |
60 | /** Phone asociated with this driver */ |
- | |
61 | ipcarg_t phone; |
- | |
62 | /** Device driver name */ |
- | |
63 | char *name; |
- | |
64 | /** Futex for list of devices owned by this driver */ |
- | |
65 | atomic_t devices_futex; |
- | |
66 | } devmap_driver_t; |
- | |
67 | - | ||
68 | /** Info about registered device |
- | |
69 | * |
- | |
70 | */ |
- | |
71 | typedef struct { |
- | |
72 | /** Pointer to the previous and next device in the list of all devices */ |
- | |
73 | link_t devices; |
- | |
74 | /** Pointer to the previous and next device in the list of devices |
- | |
75 | owned by one driver */ |
- | |
76 | link_t driver_devices; |
- | |
77 | /** Unique device identifier */ |
- | |
78 | int handle; |
- | |
79 | /** Device name */ |
- | |
80 | char *name; |
- | |
81 | /** Device driver handling this device */ |
- | |
82 | devmap_driver_t *driver; |
- | |
83 | } devmap_device_t; |
- | |
84 | - | ||
85 | /** Interface provided by devmap. |
55 | /** Interface provided by devmap. |
- | 56 | * |
|
86 | * Every process that connects to devmap must ask one of following |
57 | * Every process that connects to devmap must ask one of following |
87 | * interfaces otherwise connection will be refused. |
58 | * interfaces otherwise connection will be refused. |
- | 59 | * |
|
88 | */ |
60 | */ |
89 | typedef enum { |
61 | typedef enum { |
90 | /** Connect as device driver */ |
62 | /** Connect as device driver */ |
91 | DEVMAP_DRIVER = 1, |
63 | DEVMAP_DRIVER = 1, |
92 | /** Connect as client */ |
64 | /** Connect as client */ |
93 | DEVMAP_CLIENT, |
65 | DEVMAP_CLIENT, |
94 | /** Create new connection to instance of device that |
66 | /** Create new connection to instance of device that |
95 | * is specified by second argument of call. */ |
67 | is specified by second argument of call. */ |
96 | DEVMAP_CONNECT_TO_DEVICE |
68 | DEVMAP_CONNECT_TO_DEVICE |
97 | } devmap_interface_t; |
69 | } devmap_interface_t; |
98 | 70 | ||
- | 71 | typedef struct { |
|
- | 72 | dev_handle_t handle; |
|
- | 73 | char name[DEVMAP_NAME_MAXLEN + 1]; |
|
99 | #endif |
74 | } dev_desc_t; |
100 | 75 | ||
- | 76 | #endif |
|
101 | 77 |