| 1 | /*
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| 2 | * Copyright (c) 2006 Martin Decky
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| 3 | * All rights reserved.
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| 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 |
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| 29 | /** @addtogroup ppc32
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #include <arch/drivers/cuda.h>
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| 36 | #include <arch/asm.h>
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| 37 | #include <console/console.h>
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| 38 | #include <console/chardev.h>
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| 39 | #include <arch/drivers/pic.h>
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| 40 | #include <sysinfo/sysinfo.h>
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| 41 | #include <interrupt.h>
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| 42 | #include <stdarg.h>
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| 43 | #include <ddi/device.h>
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| 44 | #include <string.h>
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| 45 |
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| 46 | #define CUDA_IRQ 10
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| 47 |
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| 48 | #define PACKET_ADB 0x00
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| 49 | #define PACKET_CUDA 0x01
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| 50 |
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| 51 | #define CUDA_POWERDOWN 0x0a
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| 52 | #define CUDA_RESET 0x11
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| 53 |
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| 54 | #define RS 0x200
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| 55 | #define B (0 * RS)
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| 56 | #define A (1 * RS)
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| 57 | #define SR (10 * RS)
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| 58 | #define ACR (11 * RS)
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| 59 |
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| 60 | #define SR_OUT 0x10
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| 61 | #define TACK 0x10
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| 62 | #define TIP 0x20
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| 63 |
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| 64 | #define SCANCODES 128
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| 65 |
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| 66 | static volatile uint8_t *cuda = NULL;
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| 67 | static irq_t cuda_irq; /**< Cuda's IRQ. */
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| 68 |
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| 69 | static wchar_t lchars[SCANCODES] = {
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| 70 | 'a', 's', 'd', 'f', 'h', 'g', 'z', 'x', 'c', 'v',
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| 71 | U_SPECIAL,
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| 72 | 'b', 'q', 'w', 'e', 'r', 'y', 't', '1', '2', '3', '4', '6', '5',
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| 73 | '=', '9', '7', '-', '8', '0', ']', 'o', 'u', '[', 'i', 'p',
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| 74 | '\n', /* Enter */
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| 75 | 'l', 'j', '\'', 'k', ';', '\\', ',', '/', 'n', 'm', '.',
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| 76 | '\t', /* Tab */
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| 77 | ' ', '`',
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| 78 | '\b', /* Backspace */
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| 79 | U_SPECIAL,
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| 80 | U_ESCAPE, /* Escape */
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| 81 | U_SPECIAL, /* Ctrl */
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| 82 | U_SPECIAL, /* Alt */
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| 83 | U_SPECIAL, /* Shift */
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| 84 | U_SPECIAL, /* CapsLock */
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| 85 | U_SPECIAL, /* Right Alt */
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| 86 | U_LEFT_ARROW, /* Left */
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| 87 | U_RIGHT_ARROW, /* Right */
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| 88 | U_DOWN_ARROW, /* Down */
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| 89 | U_UP_ARROW, /* Up */
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| 90 | U_SPECIAL,
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| 91 | U_SPECIAL,
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| 92 | '.', /* Keypad . */
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| 93 | U_SPECIAL,
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| 94 | '*', /* Keypad * */
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| 95 | U_SPECIAL,
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| 96 | '+', /* Keypad + */
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| 97 | U_SPECIAL,
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| 98 | U_SPECIAL, /* NumLock */
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| 99 | U_SPECIAL,
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| 100 | U_SPECIAL,
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| 101 | U_SPECIAL,
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| 102 | '/', /* Keypad / */
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| 103 | '\n', /* Keypad Enter */
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| 104 | U_SPECIAL,
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| 105 | '-', /* Keypad - */
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| 106 | U_SPECIAL,
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| 107 | U_SPECIAL,
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| 108 | U_SPECIAL,
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| 109 | '0', /* Keypad 0 */
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| 110 | '1', /* Keypad 1 */
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| 111 | '2', /* Keypad 2 */
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| 112 | '3', /* Keypad 3 */
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| 113 | '4', /* Keypad 4 */
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| 114 | '5', /* Keypad 5 */
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| 115 | '6', /* Keypad 6 */
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| 116 | '7', /* Keypad 7 */
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| 117 | U_SPECIAL,
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| 118 | '8', /* Keypad 8 */
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| 119 | '9', /* Keypad 9 */
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| 120 | U_SPECIAL,
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| 121 | U_SPECIAL,
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| 122 | U_SPECIAL,
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| 123 | U_SPECIAL, /* F5 */
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| 124 | U_SPECIAL, /* F6 */
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| 125 | U_SPECIAL, /* F7 */
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| 126 | U_SPECIAL, /* F3 */
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| 127 | U_SPECIAL, /* F8 */
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| 128 | U_SPECIAL, /* F9 */
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| 129 | U_SPECIAL,
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| 130 | U_SPECIAL, /* F11 */
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| 131 | U_SPECIAL,
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| 132 | U_SPECIAL, /* F13 */
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| 133 | U_SPECIAL,
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| 134 | U_SPECIAL, /* ScrollLock */
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| 135 | U_SPECIAL,
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| 136 | U_SPECIAL, /* F10 */
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| 137 | U_SPECIAL,
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| 138 | U_SPECIAL, /* F12 */
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| 139 | U_SPECIAL,
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| 140 | U_SPECIAL, /* Pause */
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| 141 | U_SPECIAL, /* Insert */
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| 142 | U_HOME_ARROW, /* Home */
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| 143 | U_PAGE_UP, /* Page Up */
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| 144 | U_DELETE, /* Delete */
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| 145 | U_SPECIAL, /* F4 */
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| 146 | U_END_ARROW, /* End */
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| 147 | U_SPECIAL, /* F2 */
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| 148 | U_PAGE_DOWN, /* Page Down */
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| 149 | U_SPECIAL /* F1 */
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| 150 | };
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| 151 |
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| 152 | static void receive_packet(uint8_t *kind, index_t count, uint8_t data[])
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| 153 | {
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| 154 | cuda[B] = cuda[B] & ~TIP;
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| 155 | *kind = cuda[SR];
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| 156 |
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| 157 | index_t i;
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| 158 | for (i = 0; i < count; i++)
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| 159 | data[i] = cuda[SR];
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| 160 |
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| 161 | cuda[B] = cuda[B] | TIP;
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| 162 | }
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| 163 |
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| 164 | static indev_t kbrd;
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| 165 | static indev_operations_t ops = {
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| 166 | .poll = NULL
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| 167 | };
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| 168 |
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| 169 | int cuda_get_scancode(void)
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| 170 | {
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| 171 | if (cuda) {
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| 172 | uint8_t kind;
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| 173 | uint8_t data[4];
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| 174 |
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| 175 | receive_packet(&kind, 4, data);
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| 176 |
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| 177 | if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c))
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| 178 | return data[2];
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| 179 | }
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| 180 |
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| 181 | return -1;
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| 182 | }
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| 183 |
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| 184 | static void cuda_irq_handler(irq_t *irq)
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| 185 | {
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| 186 | int scan_code = cuda_get_scancode();
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| 187 |
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| 188 | if (scan_code != -1) {
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| 189 | uint8_t scancode = (uint8_t) scan_code;
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| 190 | if ((scancode & 0x80) != 0x80)
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| 191 | indev_push_character(&kbrd, lchars[scancode & 0x7f]);
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| 192 | }
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| 193 | }
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| 194 |
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| 195 | static irq_ownership_t cuda_claim(irq_t *irq)
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| 196 | {
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| 197 | return IRQ_ACCEPT;
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| 198 | }
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| 199 |
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| 200 | void cuda_init(uintptr_t base, size_t size)
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| 201 | {
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| 202 | cuda = (uint8_t *) hw_map(base, size);
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| 203 |
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| 204 | indev_initialize("cuda_kbd", &kbrd, &ops);
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| 205 | stdin = &kbrd;
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| 206 |
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| 207 | irq_initialize(&cuda_irq);
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| 208 | cuda_irq.devno = device_assign_devno();
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| 209 | cuda_irq.inr = CUDA_IRQ;
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| 210 | cuda_irq.claim = cuda_claim;
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| 211 | cuda_irq.handler = cuda_irq_handler;
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| 212 | irq_register(&cuda_irq);
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| 213 |
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| 214 | pic_enable_interrupt(CUDA_IRQ);
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| 215 |
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| 216 | sysinfo_set_item_val("kbd", NULL, true);
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| 217 | sysinfo_set_item_val("kbd.inr", NULL, CUDA_IRQ);
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| 218 | sysinfo_set_item_val("kbd.address.virtual", NULL, base);
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| 219 | }
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| 220 |
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| 221 | static void send_packet(const uint8_t kind, count_t count, ...)
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| 222 | {
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| 223 | index_t i;
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| 224 | va_list va;
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| 225 |
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| 226 | cuda[B] = cuda[B] | TIP;
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| 227 | cuda[ACR] = cuda[ACR] | SR_OUT;
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| 228 | cuda[SR] = kind;
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| 229 | cuda[B] = cuda[B] & ~TIP;
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| 230 |
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| 231 | va_start(va, count);
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| 232 |
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| 233 | for (i = 0; i < count; i++) {
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| 234 | cuda[ACR] = cuda[ACR] | SR_OUT;
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| 235 | cuda[SR] = va_arg(va, int);
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| 236 | cuda[B] = cuda[B] | TACK;
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| 237 | }
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| 238 |
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| 239 | va_end(va);
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| 240 |
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| 241 | cuda[B] = cuda[B] | TIP;
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| 242 | }
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| 243 |
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| 244 | void cpu_halt(void) {
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| 245 | asm volatile (
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| 246 | "b 0\n"
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| 247 | );
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| 248 | }
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| 249 |
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| 250 | void arch_reboot(void) {
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| 251 | if (cuda)
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| 252 | send_packet(PACKET_CUDA, 1, CUDA_RESET);
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| 253 |
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| 254 | asm volatile (
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| 255 | "b 0\n"
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| 256 | );
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| 257 | }
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| 258 |
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| 259 | /** @}
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| 260 | */
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