Subversion Repositories HelenOS

Rev

Rev 1939 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1339 cejka 1 
/*
2071 jermar 2 
 * Copyright (c) 2001-2004 Jakub Jermar
3 
 * Copyright (c) 2006 Josef Cejka
1339 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>
1939 decky 45 
#include <sysinfo.h>
1339 cejka 46 
 
1694 palkovsky 47 
/* Interesting bits for status register */
48 
#define i8042_OUTPUT_FULL  0x1
49 
#define i8042_INPUT_FULL   0x2
50 
#define i8042_MOUSE_DATA   0x20
51 
 
52 
/* Command constants */
53 
#define i8042_CMD_KBD 0x60
54 
#define i8042_CMD_MOUSE  0xd4
55 
 
56 
/* Keyboard cmd byte */
57 
#define i8042_KBD_IE        0x1
58 
#define i8042_MOUSE_IE      0x2
59 
#define i8042_KBD_DISABLE   0x10
60 
#define i8042_MOUSE_DISABLE 0x20
61 
#define i8042_KBD_TRANSLATE 0x40
62 
 
63 
/* Mouse constants */
64 
#define MOUSE_OUT_INIT  0xf4
65 
#define MOUSE_ACK       0xfa
66 
 
1339 cejka 67 
#define KEY_RELEASE 0x80
68 
 
69 
static volatile int keyflags;       /**< Tracking of multiple keypresses. */
70 
static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
71 
 
1694 palkovsky 72 
irq_cmd_t i8042_cmds[2] = {
1939 decky 73 
    { CMD_PORT_READ_1, (void *) 0x64, 0, 1 },
74 
    { CMD_PORT_READ_1, (void *) 0x60, 0, 2 }
1339 cejka 75 
};
76 
 
77 
irq_code_t i8042_kbd = {
1694 palkovsky 78 
    2,
1339 cejka 79 
    i8042_cmds
80 
};
81 
 
1694 palkovsky 82 
static void wait_ready(void) {
83 
    while (i8042_status_read() & i8042_INPUT_FULL)
84 
        ;
85 
}
86 
 
1339 cejka 87 
/** Register uspace irq handler
88 
 * @return
89 
 */
90 
int kbd_arch_init(void)
91 
{
1720 palkovsky 92 
    int i;
1694 palkovsky 93 
    int mouseenabled = 0;
94 
 
1939 decky 95 
    iospace_enable(task_get_id(), (void *) i8042_DATA, 5);
1694 palkovsky 96 
    /* Disable kbd, enable mouse */
97 
    i8042_command_write(i8042_CMD_KBD);
98 
    wait_ready();
99 
    i8042_command_write(i8042_CMD_KBD);
100 
    wait_ready();
101 
    i8042_data_write(i8042_KBD_DISABLE);
102 
    wait_ready();
103 
 
104 
    /* Flush all current IO */
105 
    while (i8042_status_read() & i8042_OUTPUT_FULL)
106 
        i8042_data_read();
107 
    /* Initialize mouse */
108 
    i8042_command_write(i8042_CMD_MOUSE);
109 
    wait_ready();
110 
    i8042_data_write(MOUSE_OUT_INIT);
111 
    wait_ready();
112 
 
113 
    int mouseanswer = 0;
114 
    for (i=0;i < 1000; i++) {
115 
        int status = i8042_status_read();
116 
        if (status & i8042_OUTPUT_FULL) {
117 
            int data = i8042_data_read();
118 
            if (status & i8042_MOUSE_DATA) {
119 
                mouseanswer = data;
120 
                break;
121 
            }
122 
        }
123 
        usleep(1000);
124 
    }
125 
    if (mouseanswer == MOUSE_ACK) {
126 
        /* enable mouse */
127 
        mouseenabled = 1;
1939 decky 128 
 
129 
        ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd);
1694 palkovsky 130 
    }
131 
    /* Enable kbd */
1939 decky 132 
    ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd);
1694 palkovsky 133 
 
134 
    int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE;
135 
    if (mouseenabled)
136 
        newcontrol |= i8042_MOUSE_IE;
137 
 
138 
    i8042_command_write(i8042_CMD_KBD);
139 
    wait_ready();
140 
    i8042_data_write(newcontrol);
141 
    wait_ready();
142 
 
143 
    return 0;
1339 cejka 144 
}
145 
 
1694 palkovsky 146 
/** Process keyboard & mouse events */
147 
int kbd_arch_process(keybuffer_t *keybuffer, ipc_call_t *call)
1339 cejka 148 
{
1694 palkovsky 149 
    int status = IPC_GET_ARG1(*call);
150 
 
1707 palkovsky 151 
    if ((status & i8042_MOUSE_DATA))
152 
        return 0;
153 
 
154 
    int scan_code = IPC_GET_ARG2(*call);
155 
 
1874 jermar 156 
    if (scan_code & KEY_RELEASE)
157 
        key_released(keybuffer, scan_code ^ KEY_RELEASE);
158 
    else
159 
        key_pressed(keybuffer, scan_code);
1339 cejka 160 
    return  1;
161 
}
1649 cejka 162 
 
163 
/**
164 
 * @}
165 
 */