Rev 3924 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3923 | svoboda | 1 | /* |
| 2 | * Copyright (c) 2001-2004 Jakub Jermar |
||
| 3 | * Copyright (c) 2006 Josef Cejka |
||
| 4 | * All rights reserved. |
||
| 5 | * |
||
| 6 | * Redistribution and use in source and binary forms, with or without |
||
| 7 | * modification, are permitted provided that the following conditions |
||
| 8 | * are met: |
||
| 9 | * |
||
| 10 | * - Redistributions of source code must retain the above copyright |
||
| 11 | * notice, this list of conditions and the following disclaimer. |
||
| 12 | * - Redistributions in binary form must reproduce the above copyright |
||
| 13 | * notice, this list of conditions and the following disclaimer in the |
||
| 14 | * documentation and/or other materials provided with the distribution. |
||
| 15 | * - The name of the author may not be used to endorse or promote products |
||
| 16 | * derived from this software without specific prior written permission. |
||
| 17 | * |
||
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 28 | */ |
||
| 29 | |||
| 30 | /** @addtogroup kbd |
||
| 31 | * @{ |
||
| 32 | */ |
||
| 33 | /** @file |
||
| 34 | */ |
||
| 35 | |||
| 36 | #include <ipc/ipc.h> |
||
| 37 | #include <async.h> |
||
| 38 | #include <unistd.h> |
||
| 39 | #include <sysinfo.h> |
||
| 40 | #include <kbd_port.h> |
||
| 41 | #include <kbd.h> |
||
| 42 | #include "i8042.h" |
||
| 43 | |||
| 44 | /* Interesting bits for status register */ |
||
| 45 | #define i8042_OUTPUT_FULL 0x1 |
||
| 46 | #define i8042_INPUT_FULL 0x2 |
||
| 47 | #define i8042_MOUSE_DATA 0x20 |
||
| 48 | |||
| 49 | /* Command constants */ |
||
| 50 | #define i8042_CMD_KBD 0x60 |
||
| 51 | #define i8042_CMD_MOUSE 0xd4 |
||
| 52 | |||
| 53 | /* Keyboard cmd byte */ |
||
| 54 | #define i8042_KBD_IE 0x1 |
||
| 55 | #define i8042_MOUSE_IE 0x2 |
||
| 56 | #define i8042_KBD_DISABLE 0x10 |
||
| 57 | #define i8042_MOUSE_DISABLE 0x20 |
||
| 58 | #define i8042_KBD_TRANSLATE 0x40 |
||
| 59 | |||
| 60 | /* Mouse constants */ |
||
| 61 | #define MOUSE_OUT_INIT 0xf4 |
||
| 62 | #define MOUSE_ACK 0xfa |
||
| 63 | |||
| 64 | static irq_cmd_t i8042_cmds[2] = { |
||
| 65 | { CMD_PORT_READ_1, (void *) 0x64, 0, 1 }, |
||
| 66 | { CMD_PORT_READ_1, (void *) 0x60, 0, 2 } |
||
| 67 | }; |
||
| 68 | |||
| 69 | static irq_code_t i8042_kbd = { |
||
| 70 | 2, |
||
| 71 | i8042_cmds |
||
| 72 | }; |
||
| 73 | |||
| 74 | static void wait_ready(void) { |
||
| 75 | while (i8042_status_read() & i8042_INPUT_FULL) |
||
| 76 | ; |
||
| 77 | } |
||
| 78 | |||
| 79 | static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call); |
||
| 80 | |||
| 81 | int kbd_port_init(void) |
||
| 82 | { |
||
| 83 | // int i; |
||
| 84 | int mouseenabled = 0; |
||
| 85 | |||
| 86 | async_set_interrupt_received(i8042_irq_handler); |
||
| 87 | iospace_enable(task_get_id(), (void *) i8042_DATA, 5); |
||
| 88 | |||
| 89 | /* Disable kbd, enable mouse */ |
||
| 90 | i8042_command_write(i8042_CMD_KBD); |
||
| 91 | wait_ready(); |
||
| 92 | i8042_command_write(i8042_CMD_KBD); |
||
| 93 | wait_ready(); |
||
| 94 | i8042_data_write(i8042_KBD_DISABLE); |
||
| 95 | wait_ready(); |
||
| 96 | |||
| 97 | /* Flush all current IO */ |
||
| 98 | while (i8042_status_read() & i8042_OUTPUT_FULL) |
||
| 99 | i8042_data_read(); |
||
| 100 | |||
| 101 | /* Initialize mouse */ |
||
| 102 | /* i8042_command_write(i8042_CMD_MOUSE); |
||
| 103 | wait_ready(); |
||
| 104 | i8042_data_write(MOUSE_OUT_INIT); |
||
| 105 | wait_ready(); |
||
| 106 | |||
| 107 | int mouseanswer = 0; |
||
| 108 | for (i=0;i < 1000; i++) { |
||
| 109 | int status = i8042_status_read(); |
||
| 110 | if (status & i8042_OUTPUT_FULL) { |
||
| 111 | int data = i8042_data_read(); |
||
| 112 | if (status & i8042_MOUSE_DATA) { |
||
| 113 | mouseanswer = data; |
||
| 114 | break; |
||
| 115 | } |
||
| 116 | } |
||
| 117 | usleep(1000); |
||
| 118 | }*/ |
||
| 119 | // if (mouseanswer == MOUSE_ACK) { |
||
| 120 | // /* enable mouse */ |
||
| 121 | // mouseenabled = 1; |
||
| 122 | // |
||
| 123 | // ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd); |
||
| 124 | // } |
||
| 125 | |||
| 126 | /* Enable kbd */ |
||
| 127 | ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd); |
||
| 128 | |||
| 129 | int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE; |
||
| 130 | if (mouseenabled) |
||
| 131 | newcontrol |= i8042_MOUSE_IE; |
||
| 132 | |||
| 133 | i8042_command_write(i8042_CMD_KBD); |
||
| 134 | wait_ready(); |
||
| 135 | i8042_data_write(newcontrol); |
||
| 136 | wait_ready(); |
||
| 137 | |||
| 138 | return 0; |
||
| 139 | } |
||
| 140 | |||
| 141 | static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call) |
||
| 142 | { |
||
| 143 | int status = IPC_GET_ARG1(*call); |
||
| 144 | |||
| 145 | if ((status & i8042_MOUSE_DATA)) |
||
| 146 | return 0; |
||
| 147 | |||
| 148 | int scan_code = IPC_GET_ARG2(*call); |
||
| 149 | |||
| 150 | kbd_push_scancode(scan_code); |
||
| 151 | return 1; |
||
| 152 | } |
||
| 153 | |||
| 154 | /** |
||
| 155 | * @} |
||
| 156 | */ |