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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 509 | jermar | 1 | /* |
| 510 | jermar | 2 | * Copyright (C) 2003 Josef Cejka |
| 509 | jermar | 3 | * Copyright (C) 2005 Jakub Jermar |
| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions |
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| 8 | * are met: |
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| 9 | * |
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| 10 | * - Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * - Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * - The name of the author may not be used to endorse or promote products |
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| 16 | * derived from this software without specific prior written permission. |
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| 17 | * |
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 28 | */ |
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| 29 | |||
| 30 | #include <arch/drivers/keyboard.h> |
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| 510 | jermar | 31 | #include <console/chardev.h> |
| 32 | #include <console/console.h> |
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| 509 | jermar | 33 | #include <arch/cp0.h> |
| 34 | #include <putchar.h> |
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| 510 | jermar | 35 | #include <synch/spinlock.h> |
| 36 | #include <synch/waitq.h> |
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| 37 | #include <typedefs.h> |
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| 567 | palkovsky | 38 | #include <arch/drivers/arc.h> |
| 509 | jermar | 39 | |
| 511 | jermar | 40 | static void keyboard_enable(void); |
| 41 | static void keyboard_disable(void); |
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| 567 | palkovsky | 42 | static void arc_kb_disable(void); |
| 43 | static void arc_kb_enable(void); |
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| 511 | jermar | 44 | |
| 510 | jermar | 45 | static chardev_t kbrd; |
| 567 | palkovsky | 46 | |
| 47 | static chardev_operations_t arc_ops = { |
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| 48 | .resume = arc_kb_enable, |
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| 49 | .suspend = arc_kb_disable |
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| 50 | }; |
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| 51 | |||
| 52 | static chardev_operations_t msim_ops = { |
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| 511 | jermar | 53 | .resume = keyboard_enable, |
| 54 | .suspend = keyboard_disable |
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| 55 | }; |
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| 510 | jermar | 56 | |
| 567 | palkovsky | 57 | static int arc_kb_enabled; |
| 58 | |||
| 510 | jermar | 59 | /** Initialize keyboard subsystem. */ |
| 509 | jermar | 60 | void keyboard_init(void) |
| 61 | { |
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| 567 | palkovsky | 62 | if (arc_enabled()) { |
| 63 | chardev_initialize(&kbrd, &arc_ops); |
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| 64 | arc_kb_enabled = 1; |
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| 65 | } else { |
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| 66 | cp0_unmask_int(KEYBOARD_IRQ); |
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| 67 | chardev_initialize(&kbrd, &msim_ops); |
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| 68 | } |
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| 510 | jermar | 69 | stdin = &kbrd; |
| 509 | jermar | 70 | } |
| 71 | |||
| 511 | jermar | 72 | /** Process keyboard interrupt. */ |
| 509 | jermar | 73 | void keyboard(void) |
| 74 | { |
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| 510 | jermar | 75 | char ch; |
| 76 | |||
| 77 | ch = *((char *) KEYBOARD_ADDRESS); |
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| 511 | jermar | 78 | chardev_push_character(&kbrd, ch); |
| 509 | jermar | 79 | } |
| 510 | jermar | 80 | |
| 81 | /* Called from getc(). */ |
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| 82 | void keyboard_enable(void) |
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| 83 | { |
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| 84 | cp0_unmask_int(KEYBOARD_IRQ); |
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| 85 | } |
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| 511 | jermar | 86 | |
| 87 | /* Called from getc(). */ |
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| 88 | void keyboard_disable(void) |
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| 89 | { |
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| 90 | cp0_mask_int(KEYBOARD_IRQ); |
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| 91 | } |
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| 567 | palkovsky | 92 | |
| 93 | /*****************************/ |
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| 94 | /* Arc keyboard */ |
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| 95 | |||
| 96 | void keyboard_poll(void) |
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| 97 | { |
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| 98 | int ch; |
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| 99 | |||
| 100 | if (!arc_enabled() || !arc_kb_enabled) |
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| 101 | return; |
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| 102 | while ((ch = arc_getchar()) != -1) |
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| 103 | chardev_push_character(&kbrd, ch); |
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| 104 | } |
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| 105 | |||
| 106 | static void arc_kb_enable(void) |
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| 107 | { |
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| 108 | arc_kb_enabled = 1; |
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| 109 | } |
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| 110 | |||
| 111 | /* Called from getc(). */ |
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| 112 | static void arc_kb_disable(void) |
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| 113 | { |
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| 114 | arc_kb_enabled = 0; |
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| 115 | } |