WebSVN – HelenOS – Diff – /trunk/uspace/srv/kbd/port/i8042.c


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * Copyright (c) 2006 Josef Cejka
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup kbd_port
 * @ingroup kbd
 * @{
 */
/** @file
 * @brief i8042 port driver.
 */
 
#include <ipc/ipc.h>
#include <async.h>
#include <unistd.h>
#include <sysinfo.h>
#include <kbd_port.h>
#include <kbd.h>
#include "i8042.h"
 
/* Interesting bits for status register */
#define i8042_OUTPUT_FULL  0x1
#define i8042_INPUT_FULL   0x2
#define i8042_MOUSE_DATA   0x20
 
/* Command constants */
#define i8042_CMD_KBD 0x60
#define i8042_CMD_MOUSE  0xd4
 
/* Keyboard cmd byte */
#define i8042_KBD_IE        0x1
#define i8042_MOUSE_IE      0x2
#define i8042_KBD_DISABLE   0x10
#define i8042_MOUSE_DISABLE 0x20
#define i8042_KBD_TRANSLATE 0x40
 
/* Mouse constants */
#define MOUSE_OUT_INIT  0xf4
#define MOUSE_ACK       0xfa
 
static irq_cmd_t i8042_cmds[2] = {
    { CMD_PORT_READ_1, (void *) 0x64, 0, 1 },
    { CMD_PORT_READ_1, (void *) 0x60, 0, 2 }
};
 
static irq_code_t i8042_kbd = {
    2,
    i8042_cmds
};
 
static void wait_ready(void) {
    while (i8042_status_read() & i8042_INPUT_FULL)
        ;
}
 
static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call);
 
int kbd_port_init(void)
{
//  int i;
    int mouseenabled = 0;
 
    async_set_interrupt_received(i8042_irq_handler);
    iospace_enable(task_get_id(), (void *) i8042_DATA, 5);
 
    /* Disable kbd, enable mouse */
    i8042_command_write(i8042_CMD_KBD);
    wait_ready();
    i8042_command_write(i8042_CMD_KBD);
    wait_ready();
    i8042_data_write(i8042_KBD_DISABLE);
    wait_ready();
 
    /* Flush all current IO */
    while (i8042_status_read() & i8042_OUTPUT_FULL)
        i8042_data_read();
   
    /* Initialize mouse */
/*  i8042_command_write(i8042_CMD_MOUSE);
    wait_ready();
    i8042_data_write(MOUSE_OUT_INIT);
    wait_ready();
   
    int mouseanswer = 0;
    for (i=0;i < 1000; i++) {
        int status = i8042_status_read();
        if (status & i8042_OUTPUT_FULL) {
            int data = i8042_data_read();
            if (status & i8042_MOUSE_DATA) {
                mouseanswer = data;
                break;
            }
        }
        usleep(1000);
    }*/
//  if (mouseanswer == MOUSE_ACK) {
//      /* enable mouse */
//      mouseenabled = 1;
//      
//      ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd);
//  }
 
    /* Enable kbd */
    ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd);
 
    int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE;
    if (mouseenabled)
        newcontrol |= i8042_MOUSE_IE;
   
    i8042_command_write(i8042_CMD_KBD);
    wait_ready();
    i8042_data_write(newcontrol);
    wait_ready();
   
    return 0;
}
 
static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call)
{
    int status = IPC_GET_ARG1(*call);
 
    if ((status & i8042_MOUSE_DATA))
        return 0;
 
    int scan_code = IPC_GET_ARG2(*call);
 
    kbd_push_scancode(scan_code);
    return 1;
}
 
/**
 * @}
 */
 

Rev 3923	Rev 3924
1	/*	1	/*
2	* Copyright (c) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* Copyright (c) 2006 Josef Cejka	3	* Copyright (c) 2006 Josef Cejka
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	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	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.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	/** @addtogroup kbd	30	/** @addtogroup kbd_port
-		31	* @ingroup kbd
31	* @{	32	* @{
32	*/	33	*/
33	/** @file	34	/** @file
-		35	* @brief i8042 port driver.
34	*/	36	*/
35		37
36	#include <ipc/ipc.h>	38	#include <ipc/ipc.h>
37	#include <async.h>	39	#include <async.h>
38	#include <unistd.h>	40	#include <unistd.h>
39	#include <sysinfo.h>	41	#include <sysinfo.h>
40	#include <kbd_port.h>	42	#include <kbd_port.h>
41	#include <kbd.h>	43	#include <kbd.h>
42	#include "i8042.h"	44	#include "i8042.h"
43		45
44	/* Interesting bits for status register */	46	/* Interesting bits for status register */
45	#define i8042_OUTPUT_FULL 0x1	47	#define i8042_OUTPUT_FULL 0x1
46	#define i8042_INPUT_FULL 0x2	48	#define i8042_INPUT_FULL 0x2
47	#define i8042_MOUSE_DATA 0x20	49	#define i8042_MOUSE_DATA 0x20
48		50
49	/* Command constants */	51	/* Command constants */
50	#define i8042_CMD_KBD 0x60	52	#define i8042_CMD_KBD 0x60
51	#define i8042_CMD_MOUSE 0xd4	53	#define i8042_CMD_MOUSE 0xd4
52		54
53	/* Keyboard cmd byte */	55	/* Keyboard cmd byte */
54	#define i8042_KBD_IE 0x1	56	#define i8042_KBD_IE 0x1
55	#define i8042_MOUSE_IE 0x2	57	#define i8042_MOUSE_IE 0x2
56	#define i8042_KBD_DISABLE 0x10	58	#define i8042_KBD_DISABLE 0x10
57	#define i8042_MOUSE_DISABLE 0x20	59	#define i8042_MOUSE_DISABLE 0x20
58	#define i8042_KBD_TRANSLATE 0x40	60	#define i8042_KBD_TRANSLATE 0x40
59		61
60	/* Mouse constants */	62	/* Mouse constants */
61	#define MOUSE_OUT_INIT 0xf4	63	#define MOUSE_OUT_INIT 0xf4
62	#define MOUSE_ACK 0xfa	64	#define MOUSE_ACK 0xfa
63		65
64	static irq_cmd_t i8042_cmds[2] = {	66	static irq_cmd_t i8042_cmds[2] = {
65	{ CMD_PORT_READ_1, (void *) 0x64, 0, 1 },	67	{ CMD_PORT_READ_1, (void *) 0x64, 0, 1 },
66	{ CMD_PORT_READ_1, (void *) 0x60, 0, 2 }	68	{ CMD_PORT_READ_1, (void *) 0x60, 0, 2 }
67	};	69	};
68		70
69	static irq_code_t i8042_kbd = {	71	static irq_code_t i8042_kbd = {
70	2,	72	2,
71	i8042_cmds	73	i8042_cmds
72	};	74	};
73		75
74	static void wait_ready(void) {	76	static void wait_ready(void) {
75	while (i8042_status_read() & i8042_INPUT_FULL)	77	while (i8042_status_read() & i8042_INPUT_FULL)
76	;	78	;
77	}	79	}
78		80
79	static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call);	81	static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call);
80		82
81	int kbd_port_init(void)	83	int kbd_port_init(void)
82	{	84	{
83	// int i;	85	// int i;
84	int mouseenabled = 0;	86	int mouseenabled = 0;
85		87
86	async_set_interrupt_received(i8042_irq_handler);	88	async_set_interrupt_received(i8042_irq_handler);
87	iospace_enable(task_get_id(), (void *) i8042_DATA, 5);	89	iospace_enable(task_get_id(), (void *) i8042_DATA, 5);
88		90
89	/* Disable kbd, enable mouse */	91	/* Disable kbd, enable mouse */
90	i8042_command_write(i8042_CMD_KBD);	92	i8042_command_write(i8042_CMD_KBD);
91	wait_ready();	93	wait_ready();
92	i8042_command_write(i8042_CMD_KBD);	94	i8042_command_write(i8042_CMD_KBD);
93	wait_ready();	95	wait_ready();
94	i8042_data_write(i8042_KBD_DISABLE);	96	i8042_data_write(i8042_KBD_DISABLE);
95	wait_ready();	97	wait_ready();
96		98
97	/* Flush all current IO */	99	/* Flush all current IO */
98	while (i8042_status_read() & i8042_OUTPUT_FULL)	100	while (i8042_status_read() & i8042_OUTPUT_FULL)
99	i8042_data_read();	101	i8042_data_read();
100		102
101	/* Initialize mouse */	103	/* Initialize mouse */
102	/* i8042_command_write(i8042_CMD_MOUSE);	104	/* i8042_command_write(i8042_CMD_MOUSE);
103	wait_ready();	105	wait_ready();
104	i8042_data_write(MOUSE_OUT_INIT);	106	i8042_data_write(MOUSE_OUT_INIT);
105	wait_ready();	107	wait_ready();
106		108
107	int mouseanswer = 0;	109	int mouseanswer = 0;
108	for (i=0;i < 1000; i++) {	110	for (i=0;i < 1000; i++) {
109	int status = i8042_status_read();	111	int status = i8042_status_read();
110	if (status & i8042_OUTPUT_FULL) {	112	if (status & i8042_OUTPUT_FULL) {
111	int data = i8042_data_read();	113	int data = i8042_data_read();
112	if (status & i8042_MOUSE_DATA) {	114	if (status & i8042_MOUSE_DATA) {
113	mouseanswer = data;	115	mouseanswer = data;
114	break;	116	break;
115	}	117	}
116	}	118	}
117	usleep(1000);	119	usleep(1000);
118	}*/	120	}*/
119	// if (mouseanswer == MOUSE_ACK) {	121	// if (mouseanswer == MOUSE_ACK) {
120	// /* enable mouse */	122	// /* enable mouse */
121	// mouseenabled = 1;	123	// mouseenabled = 1;
122	//	124	//
123	// ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd);	125	// ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd);
124	// }	126	// }
125		127
126	/* Enable kbd */	128	/* Enable kbd */
127	ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd);	129	ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd);
128		130
129	int newcontrol = i8042_KBD_IE \| i8042_KBD_TRANSLATE;	131	int newcontrol = i8042_KBD_IE \| i8042_KBD_TRANSLATE;
130	if (mouseenabled)	132	if (mouseenabled)
131	newcontrol \|= i8042_MOUSE_IE;	133	newcontrol \|= i8042_MOUSE_IE;
132		134
133	i8042_command_write(i8042_CMD_KBD);	135	i8042_command_write(i8042_CMD_KBD);
134	wait_ready();	136	wait_ready();
135	i8042_data_write(newcontrol);	137	i8042_data_write(newcontrol);
136	wait_ready();	138	wait_ready();
137		139
138	return 0;	140	return 0;
139	}	141	}
140		142
141	static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call)	143	static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call)
142	{	144	{
143	int status = IPC_GET_ARG1(*call);	145	int status = IPC_GET_ARG1(*call);
144		146
145	if ((status & i8042_MOUSE_DATA))	147	if ((status & i8042_MOUSE_DATA))
146	return 0;	148	return 0;
147		149
148	int scan_code = IPC_GET_ARG2(*call);	150	int scan_code = IPC_GET_ARG2(*call);
149		151
150	kbd_push_scancode(scan_code);	152	kbd_push_scancode(scan_code);
151	return 1;	153	return 1;
152	}	154	}
153		155
154	/**	156	/**
155	* @}	157	* @}
156	*/	158	*/
157		159

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/kbd/port/i8042.c – Rev 3923 → 3924