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| Rev | Author | Line No. | Line |
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| 3923 | svoboda | 1 | /* |
| 2 | * Copyright (c) 2001-2004 Jakub Jermar |
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| 3 | * Copyright (c) 2006 Josef Cejka |
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| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions |
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| 8 | * are met: |
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| 9 | * |
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| 10 | * - Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * - Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * - The name of the author may not be used to endorse or promote products |
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| 16 | * derived from this software without specific prior written permission. |
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| 17 | * |
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 28 | */ |
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| 29 | |||
| 3924 | svoboda | 30 | /** @addtogroup kbd_port |
| 31 | * @ingroup kbd |
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| 3923 | svoboda | 32 | * @{ |
| 33 | */ |
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| 34 | /** @file |
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| 3924 | svoboda | 35 | * @brief i8042 port driver. |
| 3923 | svoboda | 36 | */ |
| 37 | |||
| 38 | #include <ipc/ipc.h> |
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| 39 | #include <async.h> |
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| 40 | #include <unistd.h> |
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| 41 | #include <sysinfo.h> |
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| 42 | #include <kbd_port.h> |
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| 43 | #include <kbd.h> |
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| 44 | #include "i8042.h" |
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| 45 | |||
| 46 | /* Interesting bits for status register */ |
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| 47 | #define i8042_OUTPUT_FULL 0x1 |
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| 48 | #define i8042_INPUT_FULL 0x2 |
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| 49 | #define i8042_MOUSE_DATA 0x20 |
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| 50 | |||
| 51 | /* Command constants */ |
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| 52 | #define i8042_CMD_KBD 0x60 |
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| 53 | #define i8042_CMD_MOUSE 0xd4 |
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| 54 | |||
| 55 | /* Keyboard cmd byte */ |
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| 56 | #define i8042_KBD_IE 0x1 |
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| 57 | #define i8042_MOUSE_IE 0x2 |
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| 58 | #define i8042_KBD_DISABLE 0x10 |
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| 59 | #define i8042_MOUSE_DISABLE 0x20 |
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| 60 | #define i8042_KBD_TRANSLATE 0x40 |
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| 61 | |||
| 62 | /* Mouse constants */ |
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| 63 | #define MOUSE_OUT_INIT 0xf4 |
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| 64 | #define MOUSE_ACK 0xfa |
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| 65 | |||
| 4344 | svoboda | 66 | static irq_cmd_t i8042_cmds[] = { |
| 67 | { |
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| 68 | .cmd = CMD_PIO_READ_8, |
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| 69 | .addr = (void *) 0x64, |
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| 70 | .dstarg = 1 |
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| 71 | }, |
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| 72 | { |
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| 73 | .cmd = CMD_BTEST, |
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| 74 | .value = i8042_OUTPUT_FULL, |
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| 75 | .srcarg = 1, |
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| 76 | .dstarg = 3 |
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| 77 | }, |
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| 78 | { |
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| 79 | .cmd = CMD_PREDICATE, |
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| 80 | .value = 2, |
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| 81 | .srcarg = 3 |
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| 82 | }, |
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| 83 | { |
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| 84 | .cmd = CMD_PIO_READ_8, |
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| 85 | .addr = (void *) 0x60, |
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| 86 | .dstarg = 2 |
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| 87 | }, |
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| 88 | { |
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| 89 | .cmd = CMD_ACCEPT |
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| 90 | } |
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| 3923 | svoboda | 91 | }; |
| 92 | |||
| 93 | static irq_code_t i8042_kbd = { |
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| 4344 | svoboda | 94 | sizeof(i8042_cmds) / sizeof(irq_cmd_t), |
| 3923 | svoboda | 95 | i8042_cmds |
| 96 | }; |
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| 97 | |||
| 98 | static void wait_ready(void) { |
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| 99 | while (i8042_status_read() & i8042_INPUT_FULL) |
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| 100 | ; |
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| 101 | } |
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| 102 | |||
| 103 | static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call); |
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| 104 | |||
| 105 | int kbd_port_init(void) |
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| 106 | { |
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| 107 | // int i; |
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| 108 | int mouseenabled = 0; |
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| 109 | |||
| 110 | async_set_interrupt_received(i8042_irq_handler); |
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| 111 | iospace_enable(task_get_id(), (void *) i8042_DATA, 5); |
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| 112 | |||
| 113 | /* Disable kbd, enable mouse */ |
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| 114 | i8042_command_write(i8042_CMD_KBD); |
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| 115 | wait_ready(); |
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| 116 | i8042_command_write(i8042_CMD_KBD); |
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| 117 | wait_ready(); |
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| 118 | i8042_data_write(i8042_KBD_DISABLE); |
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| 119 | wait_ready(); |
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| 120 | |||
| 121 | /* Flush all current IO */ |
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| 122 | while (i8042_status_read() & i8042_OUTPUT_FULL) |
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| 123 | i8042_data_read(); |
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| 124 | |||
| 125 | /* Initialize mouse */ |
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| 126 | /* i8042_command_write(i8042_CMD_MOUSE); |
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| 127 | wait_ready(); |
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| 128 | i8042_data_write(MOUSE_OUT_INIT); |
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| 129 | wait_ready(); |
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| 130 | |||
| 131 | int mouseanswer = 0; |
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| 132 | for (i=0;i < 1000; i++) { |
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| 133 | int status = i8042_status_read(); |
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| 134 | if (status & i8042_OUTPUT_FULL) { |
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| 135 | int data = i8042_data_read(); |
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| 136 | if (status & i8042_MOUSE_DATA) { |
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| 137 | mouseanswer = data; |
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| 138 | break; |
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| 139 | } |
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| 140 | } |
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| 141 | usleep(1000); |
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| 142 | }*/ |
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| 143 | // if (mouseanswer == MOUSE_ACK) { |
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| 144 | // /* enable mouse */ |
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| 145 | // mouseenabled = 1; |
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| 146 | // |
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| 147 | // ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd); |
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| 148 | // } |
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| 149 | |||
| 150 | /* Enable kbd */ |
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| 151 | ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd); |
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| 152 | |||
| 153 | int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE; |
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| 154 | if (mouseenabled) |
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| 155 | newcontrol |= i8042_MOUSE_IE; |
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| 156 | |||
| 157 | i8042_command_write(i8042_CMD_KBD); |
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| 158 | wait_ready(); |
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| 159 | i8042_data_write(newcontrol); |
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| 160 | wait_ready(); |
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| 161 | |||
| 162 | return 0; |
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| 163 | } |
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| 164 | |||
| 165 | static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call) |
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| 166 | { |
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| 167 | int status = IPC_GET_ARG1(*call); |
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| 168 | |||
| 169 | if ((status & i8042_MOUSE_DATA)) |
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| 170 | return 0; |
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| 171 | |||
| 172 | int scan_code = IPC_GET_ARG2(*call); |
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| 173 | |||
| 174 | kbd_push_scancode(scan_code); |
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| 175 | return 1; |
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| 176 | } |
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| 177 | |||
| 178 | /** |
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| 179 | * @} |
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| 180 | */ |