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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 | |||
| 1888 | jermar | 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> |
| 2089 | decky | 36 | #include <ipc/irq.h> |
| 575 | palkovsky | 37 | #include <console/chardev.h> |
| 38 | #include <arch/drivers/msim.h> |
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| 39 | #include <arch/cp0.h> |
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| 606 | palkovsky | 40 | #include <console/console.h> |
| 1936 | decky | 41 | #include <sysinfo/sysinfo.h> |
| 575 | palkovsky | 42 | |
| 1936 | decky | 43 | /** Address of devices. */ |
| 44 | #define MSIM_VIDEORAM 0xB0000000 |
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| 45 | #define MSIM_KBD_ADDRESS 0xB0000000 |
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| 46 | #define MSIM_KBD_IRQ 2 |
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| 47 | |||
| 575 | palkovsky | 48 | static chardev_t console; |
| 1936 | decky | 49 | static irq_t msim_irq; |
| 575 | palkovsky | 50 | |
| 51 | static void msim_write(chardev_t *dev, const char ch); |
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| 52 | static void msim_enable(chardev_t *dev); |
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| 53 | static void msim_disable(chardev_t *dev); |
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| 607 | palkovsky | 54 | static char msim_do_read(chardev_t *dev); |
| 575 | palkovsky | 55 | |
| 56 | static chardev_operations_t msim_ops = { |
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| 57 | .resume = msim_enable, |
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| 58 | .suspend = msim_disable, |
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| 607 | palkovsky | 59 | .write = msim_write, |
| 60 | .read = msim_do_read, |
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| 575 | palkovsky | 61 | }; |
| 62 | |||
| 63 | /** Putchar that works with MSIM & gxemul */ |
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| 64 | void msim_write(chardev_t *dev, const char ch) |
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| 65 | { |
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| 66 | *((char *) MSIM_VIDEORAM) = ch; |
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| 67 | } |
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| 68 | |||
| 69 | /* Called from getc(). */ |
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| 70 | void msim_enable(chardev_t *dev) |
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| 71 | { |
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| 72 | cp0_unmask_int(MSIM_KBD_IRQ); |
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| 73 | } |
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| 74 | |||
| 75 | /* Called from getc(). */ |
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| 76 | void msim_disable(chardev_t *dev) |
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| 77 | { |
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| 78 | cp0_mask_int(MSIM_KBD_IRQ); |
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| 79 | } |
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| 80 | |||
| 588 | palkovsky | 81 | #include <print.h> |
| 607 | palkovsky | 82 | /** Read character using polling, assume interrupts disabled */ |
| 83 | static char msim_do_read(chardev_t *dev) |
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| 84 | { |
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| 85 | char ch; |
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| 86 | |||
| 87 | while (1) { |
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| 88 | ch = *((volatile char *) MSIM_KBD_ADDRESS); |
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| 89 | if (ch) { |
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| 90 | if (ch == '\r') |
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| 91 | return '\n'; |
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| 92 | if (ch == 0x7f) |
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| 93 | return '\b'; |
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| 94 | return ch; |
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| 95 | } |
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| 96 | } |
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| 97 | } |
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| 98 | |||
| 575 | palkovsky | 99 | /** Process keyboard interrupt. */ |
| 1936 | decky | 100 | static void msim_irq_handler(irq_t *irq, void *arg, ...) |
| 575 | palkovsky | 101 | { |
| 1936 | decky | 102 | if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox)) |
| 103 | ipc_irq_send_notif(irq); |
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| 104 | else { |
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| 105 | char ch = 0; |
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| 106 | |||
| 107 | ch = *((char *) MSIM_KBD_ADDRESS); |
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| 108 | if (ch =='\r') |
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| 109 | ch = '\n'; |
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| 110 | if (ch == 0x7f) |
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| 111 | ch = '\b'; |
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| 112 | chardev_push_character(&console, ch); |
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| 113 | } |
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| 575 | palkovsky | 114 | } |
| 115 | |||
| 1936 | decky | 116 | static irq_ownership_t msim_claim(void) |
| 575 | palkovsky | 117 | { |
| 1936 | decky | 118 | return IRQ_ACCEPT; |
| 575 | palkovsky | 119 | } |
| 1474 | palkovsky | 120 | |
| 121 | void msim_kbd_grab(void) |
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| 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 | msim_irq.notif_cfg.notify = false; |
| 1944 | jermar | 126 | spinlock_unlock(&msim_irq.lock); |
| 127 | interrupts_restore(ipl); |
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| 1474 | palkovsky | 128 | } |
| 1936 | decky | 129 | |
| 1474 | palkovsky | 130 | void msim_kbd_release(void) |
| 131 | { |
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| 1944 | jermar | 132 | ipl_t ipl = interrupts_disable(); |
| 133 | spinlock_lock(&msim_irq.lock); |
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| 1936 | decky | 134 | if (msim_irq.notif_cfg.answerbox) |
| 135 | msim_irq.notif_cfg.notify = true; |
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| 1944 | jermar | 136 | spinlock_unlock(&msim_irq.lock); |
| 137 | interrupts_restore(ipl); |
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| 1474 | palkovsky | 138 | } |
| 1702 | cejka | 139 | |
| 1936 | decky | 140 | |
| 141 | /* Return console object representing msim console */ |
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| 142 | void msim_console(devno_t devno) |
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| 143 | { |
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| 144 | chardev_initialize("msim_console", &console, &msim_ops); |
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| 145 | stdin = &console; |
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| 146 | stdout = &console; |
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| 147 | |||
| 148 | irq_initialize(&msim_irq); |
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| 149 | msim_irq.devno = devno; |
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| 150 | msim_irq.inr = MSIM_KBD_IRQ; |
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| 151 | msim_irq.claim = msim_claim; |
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| 152 | msim_irq.handler = msim_irq_handler; |
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| 153 | irq_register(&msim_irq); |
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| 154 | |||
| 155 | cp0_unmask_int(MSIM_KBD_IRQ); |
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| 156 | |||
| 157 | sysinfo_set_item_val("kbd", NULL, true); |
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| 158 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
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| 159 | sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ); |
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| 160 | sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS); |
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| 161 | } |
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| 162 | |||
| 1888 | jermar | 163 | /** @} |
| 1702 | cejka | 164 | */ |