Subversion Repositories HelenOS

Rev

Rev 1787 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1339 cejka 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 
 
1649 cejka 30 
/** @addtogroup kbdia32 ia32
1657 cejka 31 
 * @brief   HelenOS ia32 / amd64 arch dependent parts of uspace keyboard handler.
1649 cejka 32 
 * @ingroup  kbd
33 
 * @{
34 
 */
35 
/** @file
1657 cejka 36 
 * @ingroup kbdamd64
1649 cejka 37 
 */
38 
 
1339 cejka 39 
#include <arch/kbd.h>
1353 jermar 40 
#include <ipc/ipc.h>
1694 palkovsky 41 
#include <unistd.h>
42 
#include <kbd.h>
43 
#include <keys.h>
1874 jermar 44 
#include <genarch/kbd.h>
1339 cejka 45 
 
1694 palkovsky 46 
/* Interesting bits for status register */
47 
#define i8042_OUTPUT_FULL  0x1
48 
#define i8042_INPUT_FULL   0x2
49 
#define i8042_MOUSE_DATA   0x20
50 
 
51 
/* Command constants */
52 
#define i8042_CMD_KBD 0x60
53 
#define i8042_CMD_MOUSE  0xd4
54 
 
55 
/* Keyboard cmd byte */
56 
#define i8042_KBD_IE        0x1
57 
#define i8042_MOUSE_IE      0x2
58 
#define i8042_KBD_DISABLE   0x10
59 
#define i8042_MOUSE_DISABLE 0x20
60 
#define i8042_KBD_TRANSLATE 0x40
61 
 
62 
/* Mouse constants */
63 
#define MOUSE_OUT_INIT  0xf4
64 
#define MOUSE_ACK       0xfa
65 
 
1339 cejka 66 
#define KEY_RELEASE 0x80
67 
 
68 
static volatile int keyflags;       /**< Tracking of multiple keypresses. */
69 
static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
70 
 
1694 palkovsky 71 
irq_cmd_t i8042_cmds[2] = {
72 
    { CMD_PORT_READ_1, (void *)0x64, 0, 1 },
73 
    { CMD_PORT_READ_1, (void *)0x60, 0, 2 }
1339 cejka 74 
};
75 
 
76 
irq_code_t i8042_kbd = {
1694 palkovsky 77 
    2,
1339 cejka 78 
    i8042_cmds
79 
};
80 
 
1694 palkovsky 81 
static void wait_ready(void) {
82 
    while (i8042_status_read() & i8042_INPUT_FULL)
83 
        ;
84 
}
85 
 
1339 cejka 86 
/** Register uspace irq handler
87 
 * @return
88 
 */
89 
int kbd_arch_init(void)
90 
{
1720 palkovsky 91 
    int i;
1694 palkovsky 92 
    int mouseenabled = 0;
93 
 
94 
    iospace_enable(task_get_id(),(void *)i8042_DATA, 5);
95 
    /* Disable kbd, enable mouse */
96 
    i8042_command_write(i8042_CMD_KBD);
97 
    wait_ready();
98 
    i8042_command_write(i8042_CMD_KBD);
99 
    wait_ready();
100 
    i8042_data_write(i8042_KBD_DISABLE);
101 
    wait_ready();
102 
 
103 
    /* Flush all current IO */
104 
    while (i8042_status_read() & i8042_OUTPUT_FULL)
105 
        i8042_data_read();
106 
    /* Initialize mouse */
107 
    i8042_command_write(i8042_CMD_MOUSE);
108 
    wait_ready();
109 
    i8042_data_write(MOUSE_OUT_INIT);
110 
    wait_ready();
111 
 
112 
    int mouseanswer = 0;
113 
    for (i=0;i < 1000; i++) {
114 
        int status = i8042_status_read();
115 
        if (status & i8042_OUTPUT_FULL) {
116 
            int data = i8042_data_read();
117 
            if (status & i8042_MOUSE_DATA) {
118 
                mouseanswer = data;
119 
                break;
120 
            }
121 
        }
122 
        usleep(1000);
123 
    }
124 
    if (mouseanswer == MOUSE_ACK) {
125 
        /* enable mouse */
126 
        mouseenabled = 1;
127 
 
128 
        ipc_register_irq(MOUSE_IRQ, &i8042_kbd);
129 
    }
130 
    /* Enable kbd */
131 
    ipc_register_irq(KBD_IRQ, &i8042_kbd);
1713 palkovsky 132 
    /* Register for irq restart */
133 
    ipc_register_irq(IPC_IRQ_KBDRESTART, NULL);
1694 palkovsky 134 
 
135 
    int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE;
136 
    if (mouseenabled)
137 
        newcontrol |= i8042_MOUSE_IE;
138 
 
139 
    i8042_command_write(i8042_CMD_KBD);
140 
    wait_ready();
141 
    i8042_data_write(newcontrol);
142 
    wait_ready();
143 
 
144 
    return 0;
1339 cejka 145 
}
146 
 
1694 palkovsky 147 
/** Process keyboard & mouse events */
148 
int kbd_arch_process(keybuffer_t *keybuffer, ipc_call_t *call)
1339 cejka 149 
{
1694 palkovsky 150 
    int status = IPC_GET_ARG1(*call);
151 
 
1713 palkovsky 152 
    if (IPC_GET_METHOD(*call) == IPC_IRQ_KBDRESTART) {
153 
        kbd_arch_init();
154 
        return 1;
155 
    }
156 
 
1707 palkovsky 157 
    if ((status & i8042_MOUSE_DATA))
158 
        return 0;
159 
 
160 
    int scan_code = IPC_GET_ARG2(*call);
161 
 
1874 jermar 162 
    if (scan_code & KEY_RELEASE)
163 
        key_released(keybuffer, scan_code ^ KEY_RELEASE);
164 
    else
165 
        key_pressed(keybuffer, scan_code);
1339 cejka 166 
    return  1;
167 
}
1649 cejka 168 
 
169 
/**
170 
 * @}
171 
 */