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Rev | Author | Line No. | Line |
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575 | palkovsky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2005 Ondrej Palkovsky |
575 | palkovsky | 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 | |||
3844 | decky | 29 | /** @addtogroup mips32 |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
575 | palkovsky | 35 | #include <interrupt.h> |
36 | #include <console/chardev.h> |
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37 | #include <arch/drivers/msim.h> |
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38 | #include <arch/cp0.h> |
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606 | palkovsky | 39 | #include <console/console.h> |
1936 | decky | 40 | #include <sysinfo/sysinfo.h> |
3234 | decky | 41 | #include <ddi/ddi.h> |
575 | palkovsky | 42 | |
43 | static chardev_t console; |
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1936 | decky | 44 | static irq_t msim_irq; |
575 | palkovsky | 45 | |
3848 | svoboda | 46 | static void msim_write(chardev_t *dev, const char ch, bool silent); |
575 | palkovsky | 47 | static void msim_enable(chardev_t *dev); |
48 | static void msim_disable(chardev_t *dev); |
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607 | palkovsky | 49 | static char msim_do_read(chardev_t *dev); |
575 | palkovsky | 50 | |
51 | static chardev_operations_t msim_ops = { |
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52 | .resume = msim_enable, |
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53 | .suspend = msim_disable, |
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607 | palkovsky | 54 | .write = msim_write, |
55 | .read = msim_do_read, |
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575 | palkovsky | 56 | }; |
57 | |||
58 | /** Putchar that works with MSIM & gxemul */ |
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3844 | decky | 59 | void msim_write(chardev_t *dev, const char ch, bool silent) |
575 | palkovsky | 60 | { |
3844 | decky | 61 | if (!silent) |
62 | *((char *) MSIM_VIDEORAM) = ch; |
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575 | palkovsky | 63 | } |
64 | |||
65 | /* Called from getc(). */ |
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66 | void msim_enable(chardev_t *dev) |
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67 | { |
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68 | cp0_unmask_int(MSIM_KBD_IRQ); |
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69 | } |
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70 | |||
71 | /* Called from getc(). */ |
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72 | void msim_disable(chardev_t *dev) |
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73 | { |
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74 | cp0_mask_int(MSIM_KBD_IRQ); |
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75 | } |
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76 | |||
607 | palkovsky | 77 | /** Read character using polling, assume interrupts disabled */ |
78 | static char msim_do_read(chardev_t *dev) |
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79 | { |
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80 | char ch; |
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3844 | decky | 81 | |
607 | palkovsky | 82 | while (1) { |
83 | ch = *((volatile char *) MSIM_KBD_ADDRESS); |
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84 | if (ch) { |
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85 | if (ch == '\r') |
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86 | return '\n'; |
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87 | if (ch == 0x7f) |
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88 | return '\b'; |
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89 | return ch; |
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90 | } |
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91 | } |
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92 | } |
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93 | |||
575 | palkovsky | 94 | /** Process keyboard interrupt. */ |
3906 | jermar | 95 | static void msim_irq_handler(irq_t *irq) |
575 | palkovsky | 96 | { |
3955 | jermar | 97 | char ch = 0; |
1936 | decky | 98 | |
3955 | jermar | 99 | ch = *((char *) MSIM_KBD_ADDRESS); |
100 | if (ch =='\r') |
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101 | ch = '\n'; |
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102 | if (ch == 0x7f) |
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103 | ch = '\b'; |
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104 | chardev_push_character(&console, ch); |
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575 | palkovsky | 105 | } |
106 | |||
3941 | jermar | 107 | static irq_ownership_t msim_claim(irq_t *irq) |
575 | palkovsky | 108 | { |
1936 | decky | 109 | return IRQ_ACCEPT; |
575 | palkovsky | 110 | } |
1474 | palkovsky | 111 | |
112 | void msim_kbd_grab(void) |
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113 | { |
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1944 | jermar | 114 | ipl_t ipl = interrupts_disable(); |
115 | spinlock_lock(&msim_irq.lock); |
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1936 | decky | 116 | msim_irq.notif_cfg.notify = false; |
1944 | jermar | 117 | spinlock_unlock(&msim_irq.lock); |
118 | interrupts_restore(ipl); |
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1474 | palkovsky | 119 | } |
1936 | decky | 120 | |
1474 | palkovsky | 121 | void msim_kbd_release(void) |
122 | { |
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1944 | jermar | 123 | ipl_t ipl = interrupts_disable(); |
124 | spinlock_lock(&msim_irq.lock); |
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1936 | decky | 125 | if (msim_irq.notif_cfg.answerbox) |
126 | msim_irq.notif_cfg.notify = true; |
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1944 | jermar | 127 | spinlock_unlock(&msim_irq.lock); |
128 | interrupts_restore(ipl); |
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1474 | palkovsky | 129 | } |
1702 | cejka | 130 | |
1936 | decky | 131 | |
132 | /* Return console object representing msim console */ |
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133 | void msim_console(devno_t devno) |
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134 | { |
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135 | chardev_initialize("msim_console", &console, &msim_ops); |
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136 | stdin = &console; |
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137 | stdout = &console; |
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138 | |||
139 | irq_initialize(&msim_irq); |
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140 | msim_irq.devno = devno; |
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141 | msim_irq.inr = MSIM_KBD_IRQ; |
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142 | msim_irq.claim = msim_claim; |
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143 | msim_irq.handler = msim_irq_handler; |
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144 | irq_register(&msim_irq); |
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145 | |||
146 | cp0_unmask_int(MSIM_KBD_IRQ); |
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147 | |||
148 | sysinfo_set_item_val("kbd", NULL, true); |
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149 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
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150 | sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ); |
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151 | sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS); |
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3234 | decky | 152 | |
153 | sysinfo_set_item_val("fb", NULL, true); |
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154 | sysinfo_set_item_val("fb.kind", NULL, 3); |
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155 | sysinfo_set_item_val("fb.address.physical", NULL, KA2PA(MSIM_VIDEORAM)); |
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1936 | decky | 156 | } |
157 | |||
1888 | jermar | 158 | /** @} |
1702 | cejka | 159 | */ |