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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 <ipc/ipc.h> |
36 | #include <ipc/ipc.h> |
37 | #include <libadt/list.h> |
37 | #include <libadt/list.h> |
38 | 38 | ||
39 | #define DEVMAP_NAME_MAXLEN 512 |
39 | #define DEVMAP_NAME_MAXLEN 512 |
40 | 40 | ||
41 | typedef enum { |
41 | typedef enum { |
42 | DEVMAP_DRIVER_REGISTER = IPC_FIRST_USER_METHOD, |
42 | DEVMAP_DRIVER_REGISTER = IPC_FIRST_USER_METHOD, |
43 | DEVMAP_DRIVER_UNREGISTER, |
43 | DEVMAP_DRIVER_UNREGISTER, |
44 | DEVMAP_DEVICE_REGISTER, |
44 | DEVMAP_DEVICE_REGISTER, |
45 | DEVMAP_DEVICE_UNREGISTER, |
45 | DEVMAP_DEVICE_UNREGISTER, |
46 | DEVMAP_DEVICE_GET_NAME, |
46 | DEVMAP_DEVICE_GET_NAME, |
47 | DEVMAP_DEVICE_GET_HANDLE |
47 | DEVMAP_DEVICE_GET_HANDLE |
48 | } devmap_request_t; |
48 | } devmap_request_t; |
49 | 49 | ||
50 | /** Representation of device driver. |
50 | /** Representation of device driver. |
51 | * Each driver is responsible for a set of devices. |
51 | * Each driver is responsible for a set of devices. |
52 | */ |
52 | */ |
53 | typedef struct { |
53 | typedef struct { |
54 | /** Pointers to previous and next drivers in linked list */ |
54 | /** Pointers to previous and next drivers in linked list */ |
55 | link_t drivers; |
55 | link_t drivers; |
56 | /** Pointer to the linked list of devices controlled by |
56 | /** Pointer to the linked list of devices controlled by |
57 | * this driver */ |
57 | * this driver */ |
58 | link_t devices; |
58 | link_t devices; |
59 | /** Phone asociated with this driver */ |
59 | /** Phone asociated with this driver */ |
60 | ipcarg_t phone; |
60 | ipcarg_t phone; |
61 | /** Device driver name */ |
61 | /** Device driver name */ |
62 | char *name; |
62 | char *name; |
63 | /** Futex for list of devices owned by this driver */ |
63 | /** Futex for list of devices owned by this driver */ |
64 | atomic_t devices_futex; |
64 | atomic_t devices_futex; |
65 | } devmap_driver_t; |
65 | } devmap_driver_t; |
66 | 66 | ||
67 | /** Info about registered device |
67 | /** Info about registered device |
68 | * |
68 | * |
69 | */ |
69 | */ |
70 | typedef struct { |
70 | typedef struct { |
71 | /** Pointer to the previous and next device in the list of all devices */ |
71 | /** Pointer to the previous and next device in the list of all devices */ |
72 | link_t devices; |
72 | link_t devices; |
73 | /** Pointer to the previous and next device in the list of devices |
73 | /** Pointer to the previous and next device in the list of devices |
74 | owned by one driver */ |
74 | owned by one driver */ |
75 | link_t driver_devices; |
75 | link_t driver_devices; |
76 | /** Unique device identifier */ |
76 | /** Unique device identifier */ |
77 | int handle; |
77 | int handle; |
78 | /** Device name */ |
78 | /** Device name */ |
79 | char *name; |
79 | char *name; |
80 | /** Device driver handling this device */ |
80 | /** Device driver handling this device */ |
81 | devmap_driver_t *driver; |
81 | devmap_driver_t *driver; |
82 | } devmap_device_t; |
82 | } devmap_device_t; |
83 | 83 | ||
84 | /** Interface provided by devmap. |
84 | /** Interface provided by devmap. |
85 | * Every process that connects to devmap must ask one of following |
85 | * Every process that connects to devmap must ask one of following |
86 | * interfaces otherwise connection will be refused. |
86 | * interfaces otherwise connection will be refused. |
87 | */ |
87 | */ |
88 | typedef enum { |
88 | typedef enum { |
89 | /** Connect as device driver */ |
89 | /** Connect as device driver */ |
90 | DEVMAP_DRIVER = 1, |
90 | DEVMAP_DRIVER = 1, |
91 | /** Connect as client */ |
91 | /** Connect as client */ |
92 | DEVMAP_CLIENT, |
92 | DEVMAP_CLIENT, |
93 | /** Create new connection to instance of device that |
93 | /** Create new connection to instance of device that |
94 | * is specified by second argument of call. */ |
94 | * is specified by second argument of call. */ |
95 | DEVMAP_CONNECT_TO_DEVICE |
95 | DEVMAP_CONNECT_TO_DEVICE |
96 | } devmap_interface_t; |
96 | } devmap_interface_t; |
97 | 97 | ||
98 | #endif |
98 | #endif |
99 | 99 | ||
100 | 100 |