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1 | /* |
1 | /* |
2 | * Copyright (c) 2005 Jakub Jermar |
2 | * Copyright (c) 2005 Jakub Jermar |
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 genericconsole |
29 | /** @addtogroup genericconsole |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_CHARDEV_H_ |
35 | #ifndef KERN_CHARDEV_H_ |
36 | #define KERN_CHARDEV_H_ |
36 | #define KERN_CHARDEV_H_ |
37 | 37 | ||
38 | #include <arch/types.h> |
38 | #include <arch/types.h> |
39 | #include <synch/waitq.h> |
39 | #include <synch/waitq.h> |
40 | #include <synch/spinlock.h> |
40 | #include <synch/spinlock.h> |
41 | 41 | ||
42 | #define CHARDEV_BUFLEN 512 |
42 | #define INDEV_BUFLEN 512 |
43 | 43 | ||
44 | struct chardev; |
44 | struct indev; |
45 | 45 | ||
46 | /* Character device operations interface. */ |
46 | /* Input character device operations interface. */ |
47 | typedef struct { |
47 | typedef struct { |
48 | /** Suspend pushing characters. */ |
- | |
49 | void (* suspend)(struct chardev *); |
- | |
50 | /** Resume pushing characters. */ |
- | |
51 | void (* resume)(struct chardev *); |
- | |
52 | /** Write character to stream. */ |
- | |
53 | void (* write)(struct chardev *, char c, bool silent); |
- | |
54 | /** Read character directly from device, assume interrupts disabled. */ |
48 | /** Read character directly from device, assume interrupts disabled. */ |
55 | char (* read)(struct chardev *); |
49 | char (* poll)(struct indev *); |
56 | } chardev_operations_t; |
50 | } indev_operations_t; |
57 | 51 | ||
58 | /** Character input device. */ |
52 | /** Character input device. */ |
59 | typedef struct chardev { |
53 | typedef struct indev { |
60 | char *name; |
54 | char *name; |
61 | - | ||
62 | waitq_t wq; |
55 | waitq_t wq; |
- | 56 | ||
63 | /** Protects everything below. */ |
57 | /** Protects everything below. */ |
64 | SPINLOCK_DECLARE(lock); |
58 | SPINLOCK_DECLARE(lock); |
65 | uint8_t buffer[CHARDEV_BUFLEN]; |
59 | uint8_t buffer[INDEV_BUFLEN]; |
66 | count_t counter; |
60 | count_t counter; |
- | 61 | ||
67 | /** Implementation of chardev operations. */ |
62 | /** Implementation of indev operations. */ |
68 | chardev_operations_t *op; |
63 | indev_operations_t *op; |
69 | index_t index; |
64 | index_t index; |
70 | void *data; |
65 | void *data; |
- | 66 | } indev_t; |
|
- | 67 | ||
- | 68 | ||
- | 69 | struct outdev; |
|
- | 70 | ||
- | 71 | /* Output character device operations interface. */ |
|
- | 72 | typedef struct { |
|
- | 73 | /** Write character to output. */ |
|
- | 74 | void (* write)(struct outdev *, char c, bool silent); |
|
- | 75 | } outdev_operations_t; |
|
- | 76 | ||
- | 77 | /** Character input device. */ |
|
- | 78 | typedef struct outdev { |
|
- | 79 | char *name; |
|
- | 80 | ||
- | 81 | /** Protects everything below. */ |
|
- | 82 | SPINLOCK_DECLARE(lock); |
|
- | 83 | ||
- | 84 | /** Implementation of outdev operations. */ |
|
- | 85 | outdev_operations_t *op; |
|
- | 86 | void *data; |
|
71 | } chardev_t; |
87 | } outdev_t; |
- | 88 | ||
- | 89 | extern void indev_initialize(char *name, indev_t *indev, |
|
- | 90 | indev_operations_t *op); |
|
- | 91 | extern void indev_push_character(indev_t *indev, uint8_t ch); |
|
72 | 92 | ||
73 | extern void chardev_initialize(char *name, chardev_t *chardev, |
93 | extern void outdev_initialize(char *name, outdev_t *outdev, |
74 | chardev_operations_t *op); |
94 | outdev_operations_t *op); |
75 | extern void chardev_push_character(chardev_t *chardev, uint8_t ch); |
- | |
76 | 95 | ||
77 | #endif /* KERN_CHARDEV_H_ */ |
96 | #endif /* KERN_CHARDEV_H_ */ |
78 | 97 | ||
79 | /** @} |
98 | /** @} |
80 | */ |
99 | */ |
81 | 100 |