Rev 4490 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 510 | jermar | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2005 Jakub Jermar |
| 510 | jermar | 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 | |||
| 1888 | jermar | 29 | /** @addtogroup genericconsole |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
||
| 32 | /** @file |
||
| 33 | */ |
||
| 34 | |||
| 1888 | jermar | 35 | #ifndef KERN_CHARDEV_H_ |
| 36 | #define KERN_CHARDEV_H_ |
||
| 510 | jermar | 37 | |
| 38 | #include <arch/types.h> |
||
| 39 | #include <synch/waitq.h> |
||
| 40 | #include <synch/spinlock.h> |
||
| 41 | |||
| 4086 | decky | 42 | #define INDEV_BUFLEN 512 |
| 510 | jermar | 43 | |
| 4086 | decky | 44 | struct indev; |
| 2089 | decky | 45 | |
| 4086 | decky | 46 | /* Input character device operations interface. */ |
| 2089 | decky | 47 | typedef struct { |
| 2106 | jermar | 48 | /** Read character directly from device, assume interrupts disabled. */ |
| 4214 | decky | 49 | wchar_t (* poll)(struct indev *); |
| 4086 | decky | 50 | } indev_operations_t; |
| 510 | jermar | 51 | |
| 52 | /** Character input device. */ |
||
| 4086 | decky | 53 | typedef struct indev { |
| 575 | palkovsky | 54 | char *name; |
| 4086 | decky | 55 | waitq_t wq; |
| 575 | palkovsky | 56 | |
| 2106 | jermar | 57 | /** Protects everything below. */ |
| 4086 | decky | 58 | SPINLOCK_DECLARE(lock); |
| 4214 | decky | 59 | wchar_t buffer[INDEV_BUFLEN]; |
| 4490 | decky | 60 | size_t counter; |
| 4086 | decky | 61 | |
| 62 | /** Implementation of indev operations. */ |
||
| 63 | indev_operations_t *op; |
||
| 4490 | decky | 64 | size_t index; |
| 575 | palkovsky | 65 | void *data; |
| 4086 | decky | 66 | } indev_t; |
| 510 | jermar | 67 | |
| 68 | |||
| 4086 | decky | 69 | struct outdev; |
| 70 | |||
| 71 | /* Output character device operations interface. */ |
||
| 72 | typedef struct { |
||
| 73 | /** Write character to output. */ |
||
| 4214 | decky | 74 | void (* write)(struct outdev *, wchar_t, bool); |
| 4086 | decky | 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; |
||
| 87 | } outdev_t; |
||
| 88 | |||
| 89 | extern void indev_initialize(char *name, indev_t *indev, |
||
| 90 | indev_operations_t *op); |
||
| 4214 | decky | 91 | extern void indev_push_character(indev_t *indev, wchar_t ch); |
| 4310 | decky | 92 | extern wchar_t indev_pop_character(indev_t *indev); |
| 4086 | decky | 93 | |
| 94 | extern void outdev_initialize(char *name, outdev_t *outdev, |
||
| 95 | outdev_operations_t *op); |
||
| 96 | |||
| 4310 | decky | 97 | extern bool check_poll(indev_t *indev); |
| 98 | |||
| 1888 | jermar | 99 | #endif /* KERN_CHARDEV_H_ */ |
| 1702 | cejka | 100 | |
| 1888 | jermar | 101 | /** @} |
| 1702 | cejka | 102 | */ |