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Rev | Author | Line No. | Line |
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982 | decky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2006 Martin Decky |
982 | decky | 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 | |||
1734 | decky | 29 | /** @addtogroup ppc32 |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
982 | decky | 35 | #include <arch/drivers/cuda.h> |
2089 | decky | 36 | #include <ipc/irq.h> |
982 | decky | 37 | #include <arch/asm.h> |
987 | decky | 38 | #include <console/console.h> |
1628 | decky | 39 | #include <console/chardev.h> |
1480 | palkovsky | 40 | #include <arch/drivers/pic.h> |
1625 | decky | 41 | #include <sysinfo/sysinfo.h> |
1480 | palkovsky | 42 | #include <interrupt.h> |
1619 | decky | 43 | #include <stdarg.h> |
982 | decky | 44 | |
1928 | decky | 45 | #define CUDA_IRQ 10 |
1633 | decky | 46 | #define SPECIAL '?' |
47 | |||
1619 | decky | 48 | #define PACKET_ADB 0x00 |
49 | #define PACKET_CUDA 0x01 |
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50 | |||
2227 | decky | 51 | #define CUDA_POWERDOWN 0x0a |
52 | #define CUDA_RESET 0x11 |
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982 | decky | 53 | |
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 | |||
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 | |||
64 | |||
1780 | jermar | 65 | static volatile uint8_t *cuda = NULL; |
1928 | decky | 66 | static irq_t cuda_irq; /**< Cuda's IRQ. */ |
982 | decky | 67 | |
1619 | decky | 68 | static char lchars[0x80] = { |
1633 | decky | 69 | 'a', |
70 | 's', |
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71 | 'd', |
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72 | 'f', |
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73 | 'h', |
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74 | 'g', |
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75 | 'z', |
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76 | 'x', |
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77 | 'c', |
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78 | 'v', |
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79 | SPECIAL, |
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80 | 'b', |
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81 | 'q', |
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82 | 'w', |
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83 | 'e', |
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84 | 'r', |
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85 | 'y', |
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86 | 't', |
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87 | '1', |
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88 | '2', |
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89 | '3', |
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90 | '4', |
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91 | '6', |
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92 | '5', |
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93 | '=', |
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94 | '9', |
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95 | '7', |
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96 | '-', |
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97 | '8', |
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98 | '0', |
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99 | ']', |
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100 | 'o', |
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101 | 'u', |
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102 | '[', |
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103 | 'i', |
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104 | 'p', |
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105 | '\n', /* Enter */ |
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106 | 'l', |
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107 | 'j', |
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108 | '\'', |
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109 | 'k', |
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110 | ';', |
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111 | '\\', |
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112 | ',', |
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113 | '/', |
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114 | 'n', |
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115 | 'm', |
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116 | '.', |
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117 | '\t', /* Tab */ |
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118 | ' ', |
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119 | '`', |
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120 | '\b', /* Backspace */ |
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121 | SPECIAL, |
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122 | SPECIAL, /* Escape */ |
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123 | SPECIAL, /* Ctrl */ |
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124 | SPECIAL, /* Alt */ |
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125 | SPECIAL, /* Shift */ |
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126 | SPECIAL, /* Caps-Lock */ |
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127 | SPECIAL, /* RAlt */ |
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128 | SPECIAL, /* Left */ |
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129 | SPECIAL, /* Right */ |
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130 | SPECIAL, /* Down */ |
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131 | SPECIAL, /* Up */ |
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132 | SPECIAL, |
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133 | SPECIAL, |
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134 | '.', /* Keypad . */ |
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135 | SPECIAL, |
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136 | '*', /* Keypad * */ |
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137 | SPECIAL, |
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138 | '+', /* Keypad + */ |
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139 | SPECIAL, |
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140 | SPECIAL, /* NumLock */ |
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141 | SPECIAL, |
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142 | SPECIAL, |
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143 | SPECIAL, |
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144 | '/', /* Keypad / */ |
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145 | '\n', /* Keypad Enter */ |
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146 | SPECIAL, |
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147 | '-', /* Keypad - */ |
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148 | SPECIAL, |
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149 | SPECIAL, |
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150 | SPECIAL, |
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151 | '0', /* Keypad 0 */ |
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152 | '1', /* Keypad 1 */ |
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153 | '2', /* Keypad 2 */ |
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154 | '3', /* Keypad 3 */ |
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155 | '4', /* Keypad 4 */ |
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156 | '5', /* Keypad 5 */ |
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157 | '6', /* Keypad 6 */ |
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158 | '7', /* Keypad 7 */ |
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159 | SPECIAL, |
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160 | '8', /* Keypad 8 */ |
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161 | '9', /* Keypad 9 */ |
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162 | SPECIAL, |
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163 | SPECIAL, |
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164 | SPECIAL, |
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165 | SPECIAL, /* F5 */ |
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166 | SPECIAL, /* F6 */ |
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167 | SPECIAL, /* F7 */ |
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168 | SPECIAL, /* F3 */ |
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169 | SPECIAL, /* F8 */ |
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170 | SPECIAL, /* F9 */ |
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171 | SPECIAL, |
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172 | SPECIAL, /* F11 */ |
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173 | SPECIAL, |
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174 | SPECIAL, /* F13 */ |
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175 | SPECIAL, |
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176 | SPECIAL, /* ScrollLock */ |
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177 | SPECIAL, |
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178 | SPECIAL, /* F10 */ |
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179 | SPECIAL, |
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180 | SPECIAL, /* F12 */ |
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181 | SPECIAL, |
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182 | SPECIAL, /* Pause */ |
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183 | SPECIAL, /* Insert */ |
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184 | SPECIAL, /* Home */ |
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185 | SPECIAL, /* PageUp */ |
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186 | SPECIAL, /* Delete */ |
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187 | SPECIAL, /* F4 */ |
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188 | SPECIAL, /* End */ |
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189 | SPECIAL, /* F2 */ |
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190 | SPECIAL, /* PageDown */ |
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191 | SPECIAL /* F1 */ |
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1619 | decky | 192 | }; |
193 | |||
194 | |||
1780 | jermar | 195 | static void receive_packet(uint8_t *kind, index_t count, uint8_t data[]) |
1619 | decky | 196 | { |
197 | cuda[B] = cuda[B] & ~TIP; |
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198 | *kind = cuda[SR]; |
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199 | |||
200 | index_t i; |
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201 | for (i = 0; i < count; i++) |
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202 | data[i] = cuda[SR]; |
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203 | |||
204 | cuda[B] = cuda[B] | TIP; |
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205 | } |
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206 | |||
207 | |||
1606 | decky | 208 | /* Called from getc(). */ |
209 | static void cuda_resume(chardev_t *d) |
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210 | { |
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211 | } |
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212 | |||
213 | |||
214 | /* Called from getc(). */ |
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215 | static void cuda_suspend(chardev_t *d) |
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216 | { |
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217 | } |
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218 | |||
219 | |||
220 | static char key_read(chardev_t *d) |
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221 | { |
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222 | char ch; |
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223 | |||
224 | ch = 0; |
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225 | return ch; |
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226 | } |
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227 | |||
228 | |||
1628 | decky | 229 | static chardev_t kbrd; |
1606 | decky | 230 | static chardev_operations_t ops = { |
231 | .suspend = cuda_suspend, |
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232 | .resume = cuda_resume, |
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233 | .read = key_read |
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234 | }; |
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235 | |||
1619 | decky | 236 | |
1633 | decky | 237 | int cuda_get_scancode(void) |
1480 | palkovsky | 238 | { |
3829 | decky | 239 | if (cuda) { |
240 | uint8_t kind; |
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241 | uint8_t data[4]; |
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242 | |||
243 | receive_packet(&kind, 4, data); |
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244 | |||
245 | if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c)) |
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246 | return data[2]; |
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247 | } |
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1619 | decky | 248 | |
1633 | decky | 249 | return -1; |
1480 | palkovsky | 250 | } |
982 | decky | 251 | |
3906 | jermar | 252 | static void cuda_irq_handler(irq_t *irq) |
1628 | decky | 253 | { |
1934 | decky | 254 | if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox)) |
1928 | decky | 255 | ipc_irq_send_notif(irq); |
256 | else { |
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257 | int scan_code = cuda_get_scancode(); |
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258 | |||
259 | if (scan_code != -1) { |
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260 | uint8_t scancode = (uint8_t) scan_code; |
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261 | if ((scancode & 0x80) != 0x80) |
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262 | chardev_push_character(&kbrd, lchars[scancode & 0x7f]); |
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263 | } |
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1633 | decky | 264 | } |
1628 | decky | 265 | } |
266 | |||
3941 | jermar | 267 | static irq_ownership_t cuda_claim(irq_t *irq) |
1928 | decky | 268 | { |
269 | return IRQ_ACCEPT; |
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270 | } |
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1628 | decky | 271 | |
1928 | decky | 272 | |
1734 | decky | 273 | /** Initialize keyboard and service interrupts using kernel routine */ |
274 | void cuda_grab(void) |
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275 | { |
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3829 | decky | 276 | if (cuda) { |
277 | ipl_t ipl = interrupts_disable(); |
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278 | spinlock_lock(&cuda_irq.lock); |
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279 | cuda_irq.notif_cfg.notify = false; |
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280 | spinlock_unlock(&cuda_irq.lock); |
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281 | interrupts_restore(ipl); |
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282 | } |
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1734 | decky | 283 | } |
284 | |||
285 | |||
286 | /** Resume the former interrupt vector */ |
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287 | void cuda_release(void) |
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288 | { |
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3829 | decky | 289 | if (cuda) { |
290 | ipl_t ipl = interrupts_disable(); |
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291 | spinlock_lock(&cuda_irq.lock); |
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292 | if (cuda_irq.notif_cfg.answerbox) |
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293 | cuda_irq.notif_cfg.notify = true; |
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294 | spinlock_unlock(&cuda_irq.unlock); |
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295 | interrupts_restore(ipl); |
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296 | } |
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1734 | decky | 297 | } |
298 | |||
299 | |||
1928 | decky | 300 | void cuda_init(devno_t devno, uintptr_t base, size_t size) |
990 | decky | 301 | { |
3829 | decky | 302 | cuda = (uint8_t *) hw_map(base, size); |
1619 | decky | 303 | |
1606 | decky | 304 | chardev_initialize("cuda_kbd", &kbrd, &ops); |
305 | stdin = &kbrd; |
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1625 | decky | 306 | |
1928 | decky | 307 | irq_initialize(&cuda_irq); |
308 | cuda_irq.devno = devno; |
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309 | cuda_irq.inr = CUDA_IRQ; |
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310 | cuda_irq.claim = cuda_claim; |
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311 | cuda_irq.handler = cuda_irq_handler; |
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312 | irq_register(&cuda_irq); |
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313 | |||
314 | pic_enable_interrupt(CUDA_IRQ); |
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3829 | decky | 315 | |
1928 | decky | 316 | sysinfo_set_item_val("kbd", NULL, true); |
317 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
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318 | sysinfo_set_item_val("kbd.inr", NULL, CUDA_IRQ); |
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319 | sysinfo_set_item_val("kbd.address.virtual", NULL, base); |
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990 | decky | 320 | } |
321 | |||
322 | |||
2227 | decky | 323 | static void send_packet(const uint8_t kind, count_t count, ...) |
1628 | decky | 324 | { |
325 | index_t i; |
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326 | va_list va; |
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327 | |||
328 | cuda[B] = cuda[B] | TIP; |
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329 | cuda[ACR] = cuda[ACR] | SR_OUT; |
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330 | cuda[SR] = kind; |
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331 | cuda[B] = cuda[B] & ~TIP; |
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332 | |||
333 | va_start(va, count); |
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334 | |||
335 | for (i = 0; i < count; i++) { |
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336 | cuda[ACR] = cuda[ACR] | SR_OUT; |
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337 | cuda[SR] = va_arg(va, int); |
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338 | cuda[B] = cuda[B] | TACK; |
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339 | } |
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340 | |||
341 | va_end(va); |
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342 | |||
343 | cuda[B] = cuda[B] | TIP; |
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344 | } |
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345 | |||
346 | |||
982 | decky | 347 | void cpu_halt(void) { |
1269 | decky | 348 | asm volatile ( |
349 | "b 0\n" |
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350 | ); |
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982 | decky | 351 | } |
1702 | cejka | 352 | |
2227 | decky | 353 | void arch_reboot(void) { |
3829 | decky | 354 | if (cuda) |
355 | send_packet(PACKET_CUDA, 1, CUDA_RESET); |
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356 | |||
2227 | decky | 357 | asm volatile ( |
358 | "b 0\n" |
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359 | ); |
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360 | } |
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361 | |||
1734 | decky | 362 | /** @} |
1702 | cejka | 363 | */ |