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| Rev | Author | Line No. | Line |
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| 426 | jermar | 1 | /* |
| 2 | * Copyright (C) 2005 Jakub Jermar |
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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 | |||
| 586 | jermar | 29 | #include <arch/console.h> |
| 493 | jermar | 30 | #include <genarch/ofw/ofw.h> |
| 586 | jermar | 31 | #include <console/chardev.h> |
| 32 | #include <console/console.h> |
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| 664 | jermar | 33 | #include <arch/asm.h> |
| 34 | #include <arch/register.h> |
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| 669 | jermar | 35 | #include <arch/types.h> |
| 36 | #include <typedefs.h> |
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| 37 | #include <proc/thread.h> |
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| 38 | #include <synch/mutex.h> |
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| 426 | jermar | 39 | |
| 586 | jermar | 40 | static void ofw_sparc64_putchar(chardev_t *d, const char ch); |
| 669 | jermar | 41 | static char ofw_sparc64_getchar(chardev_t *d); |
| 42 | static void ofw_sparc64_suspend(chardev_t *d); |
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| 43 | static void ofw_sparc64_resume(chardev_t *d); |
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| 586 | jermar | 44 | |
| 669 | jermar | 45 | mutex_t canwork; |
| 46 | |||
| 586 | jermar | 47 | static chardev_t ofw_sparc64_console; |
| 48 | static chardev_operations_t ofw_sparc64_console_ops = { |
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| 669 | jermar | 49 | .write = ofw_sparc64_putchar, |
| 50 | .read = ofw_sparc64_getchar, |
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| 51 | .resume = ofw_sparc64_resume, |
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| 52 | .suspend = ofw_sparc64_suspend |
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| 586 | jermar | 53 | }; |
| 54 | |||
| 55 | void ofw_sparc64_console_init(void) |
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| 56 | { |
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| 57 | chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops); |
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| 669 | jermar | 58 | stdin = &ofw_sparc64_console; |
| 586 | jermar | 59 | stdout = &ofw_sparc64_console; |
| 669 | jermar | 60 | mutex_initialize(&canwork); |
| 586 | jermar | 61 | } |
| 62 | |||
| 669 | jermar | 63 | /** Write one character. |
| 426 | jermar | 64 | * |
| 669 | jermar | 65 | * @param d Character device (ignored). |
| 66 | * @param ch Character to be written. |
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| 426 | jermar | 67 | */ |
| 586 | jermar | 68 | void ofw_sparc64_putchar(chardev_t *d, const char ch) |
| 426 | jermar | 69 | { |
| 664 | jermar | 70 | pstate_reg_t pstate; |
| 71 | |||
| 72 | /* |
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| 73 | * 32-bit OpenFirmware depends on PSTATE.AM bit set. |
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| 74 | */ |
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| 75 | pstate.value = pstate_read(); |
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| 76 | pstate.am = true; |
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| 77 | pstate_write(pstate.value); |
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| 78 | |||
| 426 | jermar | 79 | if (ch == '\n') |
| 80 | ofw_putchar('\r'); |
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| 81 | ofw_putchar(ch); |
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| 664 | jermar | 82 | |
| 83 | pstate.am = false; |
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| 84 | pstate_write(pstate.value); |
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| 426 | jermar | 85 | } |
| 669 | jermar | 86 | |
| 87 | /** Read one character. |
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| 88 | * |
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| 89 | * The call is non-blocking. |
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| 90 | * |
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| 91 | * @param d Character device (ignored). |
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| 92 | * @return Character read or zero if no character was read. |
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| 93 | */ |
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| 94 | char ofw_sparc64_getchar(chardev_t *d) |
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| 95 | { |
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| 96 | char ch; |
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| 97 | pstate_reg_t pstate; |
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| 98 | |||
| 99 | /* |
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| 100 | * 32-bit OpenFirmware depends on PSTATE.AM bit set. |
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| 101 | */ |
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| 102 | pstate.value = pstate_read(); |
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| 103 | pstate.am = true; |
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| 104 | pstate_write(pstate.value); |
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| 105 | |||
| 106 | ch = ofw_getchar(); |
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| 107 | |||
| 108 | pstate.am = false; |
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| 109 | pstate_write(pstate.value); |
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| 110 | |||
| 111 | return ch; |
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| 112 | } |
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| 113 | |||
| 114 | void ofw_sparc64_suspend(chardev_t *d) |
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| 115 | { |
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| 116 | mutex_lock(&canwork); |
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| 117 | } |
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| 118 | |||
| 119 | void ofw_sparc64_resume(chardev_t *d) |
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| 120 | { |
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| 121 | mutex_unlock(&canwork); |
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| 122 | } |
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| 123 | |||
| 124 | /** Kernel thread for pushing characters read from OFW to input buffer. |
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| 125 | * |
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| 126 | * @param arg Ignored. |
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| 127 | */ |
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| 128 | void kofwinput(void *arg) |
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| 129 | { |
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| 130 | |||
| 131 | while (1) { |
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| 132 | char ch = 0; |
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| 133 | |||
| 134 | mutex_lock(&canwork); |
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| 135 | mutex_unlock(&canwork); |
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| 136 | |||
| 137 | ch = ofw_sparc64_getchar(NULL); |
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| 138 | if (ch) { |
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| 139 | if (ch == '\r') |
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| 140 | ch = '\n'; |
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| 141 | chardev_push_character(&ofw_sparc64_console, ch); |
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| 142 | } |
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| 143 | thread_usleep(25000); |
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| 144 | } |
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| 145 | } |