WebSVN – HelenOS – Diff – /trunk/uspace/kbd/arch/ia32/src/mouse.c


/*
 * Copyright (c) 2006 Ondrej Palkovsky
 * 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.
 */
 
#include <ipc/ipc.h>
#include <async.h>
#include <kbd.h>
#include <keys.h>
 
#define i8042_MOUSE_DATA   0x20
 
#define BUFSIZE 3
 
typedef struct {
    union {
        unsigned char data[BUFSIZE];
        struct {
            unsigned leftbtn : 1;
            unsigned rightbtn : 1;
            unsigned middlebtn : 1;
            unsigned isone : 1; /* Always one */
            unsigned xsign : 1;
            unsigned ysign : 1;
            unsigned xovfl : 1;
            unsigned yovfl : 1;
            unsigned char x;
            unsigned char y;
        } val;
    }u;
}ps2packet_t;
 
static ps2packet_t buf;
static int bufpos = 0;
static int leftbtn = 0;
static int rightbtn = 0;
static int middlebtn = 0;
 
/** Convert 9-bit 2-complement signed number to integer */
static int bit9toint(int sign, unsigned char data)
{
    int tmp;
 
    if (!sign)
        return data;
 
    tmp = ((unsigned char)~data) + 1;
    return -tmp;
}
 
/** Process mouse data
 *
 * @return True if mouse command was recognized and processed
 */
int mouse_arch_process(int phoneid, ipc_call_t *call)
{
    int status = IPC_GET_ARG1(*call);
    int data = IPC_GET_ARG2(*call);
    int x,y;
 
    if (!(status & i8042_MOUSE_DATA))
        return 0;
 
    /* Check that we have not lost synchronization */
    if (bufpos == 0 && !(data & 0x8))
        return 1; /* Synchro lost, ignore byte */
 
    buf.u.data[bufpos++] = data;
    if (bufpos == BUFSIZE) {
        bufpos = 0;
        if (phoneid != -1) {
            if (buf.u.val.leftbtn ^ leftbtn) {
                leftbtn = buf.u.val.leftbtn;
                async_msg(phoneid, KBD_MS_LEFT, leftbtn);
            }
            if (buf.u.val.rightbtn & rightbtn) {
                rightbtn = buf.u.val.middlebtn;
                async_msg(phoneid, KBD_MS_RIGHT, rightbtn);
            }
            if (buf.u.val.rightbtn & rightbtn) {
                middlebtn = buf.u.val.middlebtn;
                async_msg(phoneid, KBD_MS_MIDDLE, middlebtn);
            }
            x = bit9toint(buf.u.val.xsign, buf.u.val.x);
            y = bit9toint(buf.u.val.ysign, buf.u.val.y);
            if (x || y)
                async_msg_2(phoneid, KBD_MS_MOVE, (ipcarg_t)x, (ipcarg_t)(-y));
        }
    }
 
   
    return 1;
}
 

Rev 1787	Rev 2071
1	/*	1	/*
2	* Copyright (C) 2006 Ondrej Palkovsky	2	* Copyright (c) 2006 Ondrej Palkovsky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <ipc/ipc.h>	29	#include <ipc/ipc.h>
30	#include <async.h>	30	#include <async.h>
31	#include <kbd.h>	31	#include <kbd.h>
32	#include <keys.h>	32	#include <keys.h>
33		33
34	#define i8042_MOUSE_DATA 0x20	34	#define i8042_MOUSE_DATA 0x20
35		35
36	#define BUFSIZE 3	36	#define BUFSIZE 3
37		37
38	typedef struct {	38	typedef struct {
39	union {	39	union {
40	unsigned char data[BUFSIZE];	40	unsigned char data[BUFSIZE];
41	struct {	41	struct {
42	unsigned leftbtn : 1;	42	unsigned leftbtn : 1;
43	unsigned rightbtn : 1;	43	unsigned rightbtn : 1;
44	unsigned middlebtn : 1;	44	unsigned middlebtn : 1;
45	unsigned isone : 1; /* Always one */	45	unsigned isone : 1; /* Always one */
46	unsigned xsign : 1;	46	unsigned xsign : 1;
47	unsigned ysign : 1;	47	unsigned ysign : 1;
48	unsigned xovfl : 1;	48	unsigned xovfl : 1;
49	unsigned yovfl : 1;	49	unsigned yovfl : 1;
50	unsigned char x;	50	unsigned char x;
51	unsigned char y;	51	unsigned char y;
52	} val;	52	} val;
53	}u;	53	}u;
54	}ps2packet_t;	54	}ps2packet_t;
55		55
56	static ps2packet_t buf;	56	static ps2packet_t buf;
57	static int bufpos = 0;	57	static int bufpos = 0;
58	static int leftbtn = 0;	58	static int leftbtn = 0;
59	static int rightbtn = 0;	59	static int rightbtn = 0;
60	static int middlebtn = 0;	60	static int middlebtn = 0;
61		61
62	/** Convert 9-bit 2-complement signed number to integer */	62	/** Convert 9-bit 2-complement signed number to integer */
63	static int bit9toint(int sign, unsigned char data)	63	static int bit9toint(int sign, unsigned char data)
64	{	64	{
65	int tmp;	65	int tmp;
66		66
67	if (!sign)	67	if (!sign)
68	return data;	68	return data;
69		69
70	tmp = ((unsigned char)~data) + 1;	70	tmp = ((unsigned char)~data) + 1;
71	return -tmp;	71	return -tmp;
72	}	72	}
73		73
74	/** Process mouse data	74	/** Process mouse data
75	*	75	*
76	* @return True if mouse command was recognized and processed	76	* @return True if mouse command was recognized and processed
77	*/	77	*/
78	int mouse_arch_process(int phoneid, ipc_call_t *call)	78	int mouse_arch_process(int phoneid, ipc_call_t *call)
79	{	79	{
80	int status = IPC_GET_ARG1(*call);	80	int status = IPC_GET_ARG1(*call);
81	int data = IPC_GET_ARG2(*call);	81	int data = IPC_GET_ARG2(*call);
82	int x,y;	82	int x,y;
83		83
84	if (!(status & i8042_MOUSE_DATA))	84	if (!(status & i8042_MOUSE_DATA))
85	return 0;	85	return 0;
86		86
87	/* Check that we have not lost synchronization */	87	/* Check that we have not lost synchronization */
88	if (bufpos == 0 && !(data & 0x8))	88	if (bufpos == 0 && !(data & 0x8))
89	return 1; /* Synchro lost, ignore byte */	89	return 1; /* Synchro lost, ignore byte */
90		90
91	buf.u.data[bufpos++] = data;	91	buf.u.data[bufpos++] = data;
92	if (bufpos == BUFSIZE) {	92	if (bufpos == BUFSIZE) {
93	bufpos = 0;	93	bufpos = 0;
94	if (phoneid != -1) {	94	if (phoneid != -1) {
95	if (buf.u.val.leftbtn ^ leftbtn) {	95	if (buf.u.val.leftbtn ^ leftbtn) {
96	leftbtn = buf.u.val.leftbtn;	96	leftbtn = buf.u.val.leftbtn;
97	async_msg(phoneid, KBD_MS_LEFT, leftbtn);	97	async_msg(phoneid, KBD_MS_LEFT, leftbtn);
98	}	98	}
99	if (buf.u.val.rightbtn & rightbtn) {	99	if (buf.u.val.rightbtn & rightbtn) {
100	rightbtn = buf.u.val.middlebtn;	100	rightbtn = buf.u.val.middlebtn;
101	async_msg(phoneid, KBD_MS_RIGHT, rightbtn);	101	async_msg(phoneid, KBD_MS_RIGHT, rightbtn);
102	}	102	}
103	if (buf.u.val.rightbtn & rightbtn) {	103	if (buf.u.val.rightbtn & rightbtn) {
104	middlebtn = buf.u.val.middlebtn;	104	middlebtn = buf.u.val.middlebtn;
105	async_msg(phoneid, KBD_MS_MIDDLE, middlebtn);	105	async_msg(phoneid, KBD_MS_MIDDLE, middlebtn);
106	}	106	}
107	x = bit9toint(buf.u.val.xsign, buf.u.val.x);	107	x = bit9toint(buf.u.val.xsign, buf.u.val.x);
108	y = bit9toint(buf.u.val.ysign, buf.u.val.y);	108	y = bit9toint(buf.u.val.ysign, buf.u.val.y);
109	if (x \|\| y)	109	if (x \|\| y)
110	async_msg_2(phoneid, KBD_MS_MOVE, (ipcarg_t)x, (ipcarg_t)(-y));	110	async_msg_2(phoneid, KBD_MS_MOVE, (ipcarg_t)x, (ipcarg_t)(-y));
111	}	111	}
112	}	112	}
113		113
114		114
115	return 1;	115	return 1;
116	}	116	}
117		117

Subversion Repositories HelenOS

(root)/trunk/uspace/kbd/arch/ia32/src/mouse.c – Rev 1787 → 2071