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| Rev | Author | Line No. | Line |
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| 2215 | kebrt | 1 | /* |
| 2 | * Copyright (c) 2005-2007 Ondrej Palkovsky, Michal Kebrt |
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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 | |||
| 29 | /** @addtogroup arm32 |
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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 | |||
| 35 | #include <interrupt.h> |
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| 36 | #include <ipc/irq.h> |
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| 37 | #include <console/chardev.h> |
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| 38 | #include <arch/drivers/gxemul.h> |
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| 39 | #include <console/console.h> |
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| 40 | #include <sysinfo/sysinfo.h> |
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| 41 | #include <print.h> |
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| 42 | |||
| 43 | /** Address of devices. */ |
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| 44 | #define GXEMUL_VIDEORAM 0x10000000 |
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| 45 | #define GXEMUL_KBD_ADDRESS 0x10000000 |
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| 46 | #define GXEMUL_KBD_IRQ 0 |
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| 47 | |||
| 48 | static chardev_t console; |
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| 49 | static irq_t gxemul_irq; |
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| 50 | |||
| 51 | static void gxemul_write(chardev_t *dev, const char ch); |
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| 52 | static void gxemul_enable(chardev_t *dev); |
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| 53 | static void gxemul_disable(chardev_t *dev); |
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| 54 | static char gxemul_do_read(chardev_t *dev); |
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| 55 | |||
| 56 | static chardev_operations_t gxemul_ops = { |
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| 57 | .resume = gxemul_enable, |
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| 58 | .suspend = gxemul_disable, |
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| 59 | .write = gxemul_write, |
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| 60 | .read = gxemul_do_read, |
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| 61 | }; |
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| 62 | |||
| 63 | /** Putchar that works with gxemul */ |
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| 64 | void gxemul_write(chardev_t *dev, const char ch) |
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| 65 | { |
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| 66 | *((char *) GXEMUL_VIDEORAM) = ch; |
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| 67 | } |
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| 68 | |||
| 69 | /* Called from getc(). */ |
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| 70 | void gxemul_enable(chardev_t *dev) |
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| 71 | { |
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| 72 | // cp0_unmask_int(GXEMUL_KBD_IRQ); |
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| 73 | } |
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| 74 | |||
| 75 | /* Called from getc(). */ |
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| 76 | void gxemul_disable(chardev_t *dev) |
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| 77 | { |
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| 78 | // cp0_mask_int(GXEMUL_KBD_IRQ); |
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| 79 | } |
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| 80 | |||
| 81 | /** Read character using polling, assume interrupts disabled */ |
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| 82 | static char gxemul_do_read(chardev_t *dev) |
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| 83 | { |
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| 84 | char ch; |
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| 85 | |||
| 86 | while (1) { |
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| 87 | ch = *((volatile char *) GXEMUL_KBD_ADDRESS); |
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| 88 | if (ch) { |
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| 89 | if (ch == '\r') |
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| 90 | return '\n'; |
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| 91 | if (ch == 0x7f) |
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| 92 | return '\b'; |
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| 93 | return ch; |
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| 94 | } |
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| 95 | } |
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| 96 | } |
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| 97 | |||
| 98 | /** Process keyboard interrupt. */ |
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| 99 | static void gxemul_irq_handler(irq_t *irq, void *arg, ...) |
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| 100 | { |
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| 101 | if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox)) |
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| 102 | ipc_irq_send_notif(irq); |
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| 103 | else { |
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| 104 | char ch = 0; |
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| 105 | |||
| 106 | ch = *((char *) GXEMUL_KBD_ADDRESS); |
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| 107 | if (ch =='\r') |
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| 108 | ch = '\n'; |
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| 109 | if (ch == 0x7f) |
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| 110 | ch = '\b'; |
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| 111 | chardev_push_character(&console, ch); |
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| 112 | } |
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| 113 | } |
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| 114 | |||
| 115 | static irq_ownership_t gxemul_claim(void) |
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| 116 | { |
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| 117 | return IRQ_ACCEPT; |
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| 118 | } |
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| 119 | |||
| 120 | void gxemul_kbd_grab(void) |
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| 121 | { |
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| 122 | ipl_t ipl = interrupts_disable(); |
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| 123 | spinlock_lock(&msim_irq.lock); |
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| 124 | gxemul_irq.notif_cfg.notify = false; |
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| 125 | spinlock_unlock(&gxemul_irq.lock); |
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| 126 | interrupts_restore(ipl); |
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| 127 | } |
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| 128 | |||
| 129 | void gxemul_kbd_release(void) |
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| 130 | { |
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| 131 | ipl_t ipl = interrupts_disable(); |
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| 132 | spinlock_lock(&gxemul_irq.lock); |
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| 133 | if (gxemul_irq.notif_cfg.answerbox) |
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| 134 | gxemul_irq.notif_cfg.notify = true; |
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| 135 | spinlock_unlock(&gxemul_irq.lock); |
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| 136 | interrupts_restore(ipl); |
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| 137 | } |
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| 138 | |||
| 139 | |||
| 140 | /* Return console object representing msim console */ |
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| 141 | void gxemul_console(devno_t devno) |
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| 142 | { |
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| 143 | chardev_initialize("msim_console", &console, &gxemul_ops); |
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| 144 | stdin = &console; |
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| 145 | stdout = &console; |
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| 146 | |||
| 147 | irq_initialize(&gxemul_irq); |
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| 148 | gxemul_irq.devno = devno; |
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| 149 | gxemul_irq.inr = GXEMUL_KBD_IRQ; |
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| 150 | gxemul_irq.claim = gxemul_claim; |
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| 151 | gxemul_irq.handler = gxemul_irq_handler; |
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| 152 | irq_register(&gxemul_irq); |
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| 153 | |||
| 154 | // cp0_unmask_int(GXEMUL_KBD_IRQ); |
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| 155 | |||
| 156 | sysinfo_set_item_val("kbd", NULL, true); |
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| 157 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
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| 158 | sysinfo_set_item_val("kbd.inr", NULL, GXEMUL_KBD_IRQ); |
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| 159 | sysinfo_set_item_val("kbd.address.virtual", NULL, GXEMUL_KBD_ADDRESS); |
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| 160 | } |
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| 161 | |||
| 162 | /** @} |
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| 163 | */ |