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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 520 | vana | 1 | /* |
| 521 | vana | 2 | * Copyright (C) 2005 Jakub Vana |
| 520 | vana | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <arch/drivers/keyboard.h> |
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| 30 | #include <console/chardev.h> |
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| 31 | #include <console/console.h> |
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| 32 | #include <putchar.h> |
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| 33 | #include <synch/spinlock.h> |
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| 34 | #include <synch/waitq.h> |
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| 35 | #include <typedefs.h> |
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| 36 | #include <print.h> |
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| 37 | |||
| 38 | static void keyboard_enable(void); |
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| 39 | static void keyboard_disable(void); |
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| 40 | |||
| 41 | static chardev_t kbrd; |
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| 42 | static chardev_operations_t ops = { |
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| 43 | .resume = keyboard_enable, |
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| 44 | .suspend = keyboard_disable |
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| 45 | }; |
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| 46 | |||
| 523 | jermar | 47 | bool kb_disable; |
| 520 | vana | 48 | |
| 49 | /** Initialize keyboard subsystem. */ |
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| 50 | void keyboard_init(void) |
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| 51 | { |
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| 52 | chardev_initialize(&kbrd, &ops); |
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| 53 | stdin = &kbrd; |
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| 521 | vana | 54 | kb_disable = false; |
| 520 | vana | 55 | } |
| 56 | |||
| 523 | jermar | 57 | /** Ask keyboard if a key was pressed. */ |
| 521 | vana | 58 | void poll_keyboard(void) |
| 520 | vana | 59 | { |
| 60 | char ch; |
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| 61 | |||
| 523 | jermar | 62 | if (kb_disable) |
| 63 | return; |
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| 64 | |||
| 520 | vana | 65 | ch = ski_getchar(); |
| 523 | jermar | 66 | if(ch == '\r') |
| 67 | ch = '\n'; |
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| 68 | if (ch) |
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| 69 | chardev_push_character(&kbrd, ch); |
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| 520 | vana | 70 | } |
| 71 | |||
| 72 | /* Called from getc(). */ |
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| 73 | void keyboard_enable(void) |
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| 74 | { |
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| 523 | jermar | 75 | kb_disable = false; |
| 520 | vana | 76 | } |
| 77 | |||
| 78 | /* Called from getc(). */ |
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| 79 | void keyboard_disable(void) |
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| 80 | { |
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| 523 | jermar | 81 | kb_disable = true; |
| 520 | vana | 82 | } |