WebSVN – HelenOS – Diff – /branches/dynload/kernel/genarch/src/kbd/i8042.c


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * 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 genarch
 * @{
 */
/**
 * @file
 * @brief   i8042 processor driver.
 *
 * It takes care of low-level keyboard functions.
 */
 
#include <genarch/kbd/i8042.h>
#ifdef ia64
#include <arch/drivers/kbd.h>
#endif
#include <genarch/kbd/key.h>
#include <genarch/kbd/scanc.h>
#include <genarch/kbd/scanc_pc.h>
#include <arch/drivers/i8042.h>
#include <cpu.h>
#include <arch/asm.h>
#include <arch.h>
#include <console/chardev.h>
#include <console/console.h>
#include <interrupt.h>
#include <sysinfo/sysinfo.h>
#include <ipc/irq.h>
 
/* Keyboard commands. */
#define KBD_ENABLE  0xf4
#define KBD_DISABLE 0xf5
#define KBD_ACK     0xfa
 
/*
 * 60  Write 8042 Command Byte: next data byte written to port 60h is
 *     placed in 8042 command register. Format:
 *
 *    |7|6|5|4|3|2|1|0|8042 Command Byte
 *     | | | | | | | `---- 1=enable output register full interrupt
 *     | | | | | | `----- should be 0
 *     | | | | | `------ 1=set status register system, 0=clear
 *     | | | | `------- 1=override keyboard inhibit, 0=allow inhibit
 *     | | | `-------- disable keyboard I/O by driving clock line low
 *     | | `--------- disable auxiliary device, drives clock line low
 *     | `---------- IBM scancode translation 0=AT, 1=PC/XT
 *     `----------- reserved, should be 0
 */
 
#define i8042_SET_COMMAND   0x60
#define i8042_COMMAND       0x69
 
#define i8042_BUFFER_FULL_MASK  0x01
#define i8042_WAIT_MASK         0x02
#define i8042_MOUSE_DATA        0x20
 
static void i8042_suspend(chardev_t *);
static void i8042_resume(chardev_t *);
 
static chardev_operations_t ops = {
    .suspend = i8042_suspend,
    .resume = i8042_resume,
    .read = i8042_key_read
};
 
/** Structure for i8042's IRQ. */
static irq_t i8042_kbd_irq;
static irq_t i8042_mouse_irq;
 
void i8042_grab(void)
{
    ipl_t ipl = interrupts_disable();
   
    spinlock_lock(&i8042_kbd_irq.lock);
    i8042_kbd_irq.notif_cfg.notify = false;
    spinlock_unlock(&i8042_kbd_irq.lock);
   
    spinlock_lock(&i8042_mouse_irq.lock);
    i8042_mouse_irq.notif_cfg.notify = false;
    spinlock_unlock(&i8042_mouse_irq.lock);
   
    interrupts_restore(ipl);
}
 
void i8042_release(void)
{
    ipl_t ipl = interrupts_disable();
   
    spinlock_lock(&i8042_kbd_irq.lock);
    if (i8042_kbd_irq.notif_cfg.answerbox)
        i8042_kbd_irq.notif_cfg.notify = true;
    spinlock_unlock(&i8042_kbd_irq.lock);
   
    spinlock_lock(&i8042_mouse_irq.lock);
    if (i8042_mouse_irq.notif_cfg.answerbox)
        i8042_mouse_irq.notif_cfg.notify = true;
    spinlock_unlock(&i8042_mouse_irq.lock);
   
    interrupts_restore(ipl);
}
 
static irq_ownership_t i8042_claim(void)
{
    return IRQ_ACCEPT;
}
 
static void i8042_irq_handler(irq_t *irq, void *arg, ...)
{
    if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)
        ipc_irq_send_notif(irq);
    else {
        uint8_t data;
        uint8_t status;
       
        while (((status = i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {
            data = i8042_data_read();
           
            if ((status & i8042_MOUSE_DATA))
                continue;
 
            if (data & KEY_RELEASE)
                key_released(data ^ KEY_RELEASE);
            else
                key_pressed(data);
        }
    }
}
 
/** Initialize i8042. */
void i8042_init(devno_t kbd_devno, inr_t kbd_inr, devno_t mouse_devno, inr_t mouse_inr)
{
    chardev_initialize("i8042_kbd", &kbrd, &ops);
    stdin = &kbrd;
   
    irq_initialize(&i8042_kbd_irq);
    i8042_kbd_irq.devno = kbd_devno;
    i8042_kbd_irq.inr = kbd_inr;
    i8042_kbd_irq.claim = i8042_claim;
    i8042_kbd_irq.handler = i8042_irq_handler;
    irq_register(&i8042_kbd_irq);
   
    irq_initialize(&i8042_mouse_irq);
    i8042_mouse_irq.devno = mouse_devno;
    i8042_mouse_irq.inr = mouse_inr;
    i8042_mouse_irq.claim = i8042_claim;
    i8042_mouse_irq.handler = i8042_irq_handler;
    irq_register(&i8042_mouse_irq);
#ifndef ia64    
    trap_virtual_enable_irqs(1 << kbd_inr);
    trap_virtual_enable_irqs(1 << mouse_inr);
#endif  
    /*
     * Clear input buffer.
     * Number of iterations is limited to prevent infinite looping.
     */
    int i;
    for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {
        i8042_data_read();
    }
   
    sysinfo_set_item_val("kbd", NULL, true);
    sysinfo_set_item_val("kbd.devno", NULL, kbd_devno);
    sysinfo_set_item_val("kbd.inr", NULL, kbd_inr);
#ifdef KBD_LEGACY
    sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
#endif  
    sysinfo_set_item_val("mouse", NULL, true);
    sysinfo_set_item_val("mouse.devno", NULL, mouse_devno);
    sysinfo_set_item_val("mouse.inr", NULL, mouse_inr);
   
    i8042_grab();
}
 
/* Called from getc(). */
void i8042_resume(chardev_t *d)
{
}
 
/* Called from getc(). */
void i8042_suspend(chardev_t *d)
{
}
 
char i8042_key_read(chardev_t *d)
{
    char ch;   
 
    while(!(ch = active_read_buff_read())) {
        uint8_t x;
        while (!(i8042_status_read() & i8042_BUFFER_FULL_MASK))
            ;
        x = i8042_data_read();
        if (x & KEY_RELEASE)
            key_released(x ^ KEY_RELEASE);
        else
            active_read_key_pressed(x);
    }
    return ch;
}
 
/** Poll for key press and release events.
 *
 * This function can be used to implement keyboard polling.
 */
void i8042_poll(void)
{
    uint8_t x;
 
    while (((x = i8042_status_read() & i8042_BUFFER_FULL_MASK))) {
        x = i8042_data_read();
        if (x & KEY_RELEASE)
            key_released(x ^ KEY_RELEASE);
        else
            key_pressed(x);
    }
}
 
/** @}
 */
 

Rev 2927	Rev 3674
1	/*	1	/*
2	* Copyright (c) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
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	/** @addtogroup genarch	29	/** @addtogroup genarch
30	* @{	30	* @{
31	*/	31	*/
32	/**	32	/**
33	* @file	33	* @file
34	* @brief i8042 processor driver.	34	* @brief i8042 processor driver.
35	*	35	*
36	* It takes care of low-level keyboard functions.	36	* It takes care of low-level keyboard functions.
37	*/	37	*/
38		38
39	#include <genarch/kbd/i8042.h>	39	#include <genarch/kbd/i8042.h>
-		40	#ifdef ia64
-		41	#include <arch/drivers/kbd.h>
-		42	#endif
40	#include <genarch/kbd/key.h>	43	#include <genarch/kbd/key.h>
41	#include <genarch/kbd/scanc.h>	44	#include <genarch/kbd/scanc.h>
42	#include <genarch/kbd/scanc_pc.h>	45	#include <genarch/kbd/scanc_pc.h>
43	#include <arch/drivers/i8042.h>	46	#include <arch/drivers/i8042.h>
44	#include <cpu.h>	47	#include <cpu.h>
45	#include <arch/asm.h>	48	#include <arch/asm.h>
46	#include <arch.h>	49	#include <arch.h>
47	#include <console/chardev.h>	50	#include <console/chardev.h>
48	#include <console/console.h>	51	#include <console/console.h>
49	#include <interrupt.h>	52	#include <interrupt.h>
50	#include <sysinfo/sysinfo.h>	53	#include <sysinfo/sysinfo.h>
51	#include <ipc/irq.h>	54	#include <ipc/irq.h>
52		55
53	/* Keyboard commands. */	56	/* Keyboard commands. */
54	#define KBD_ENABLE 0xf4	57	#define KBD_ENABLE 0xf4
55	#define KBD_DISABLE 0xf5	58	#define KBD_DISABLE 0xf5
56	#define KBD_ACK 0xfa	59	#define KBD_ACK 0xfa
57		60
58	/*	61	/*
59	* 60 Write 8042 Command Byte: next data byte written to port 60h is	62	* 60 Write 8042 Command Byte: next data byte written to port 60h is
60	* placed in 8042 command register. Format:	63	* placed in 8042 command register. Format:
61	*	64	*
62	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte	65	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte
63	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt	66	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt
64	* \| \| \| \| \| \| `----- should be 0	67	* \| \| \| \| \| \| `----- should be 0
65	* \| \| \| \| \| `------ 1=set status register system, 0=clear	68	* \| \| \| \| \| `------ 1=set status register system, 0=clear
66	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit	69	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit
67	* \| \| \| `-------- disable keyboard I/O by driving clock line low	70	* \| \| \| `-------- disable keyboard I/O by driving clock line low
68	* \| \| `--------- disable auxiliary device, drives clock line low	71	* \| \| `--------- disable auxiliary device, drives clock line low
69	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT	72	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT
70	* `----------- reserved, should be 0	73	* `----------- reserved, should be 0
71	*/	74	*/
72		75
73	#define i8042_SET_COMMAND 0x60	76	#define i8042_SET_COMMAND 0x60
74	#define i8042_COMMAND 0x69	77	#define i8042_COMMAND 0x69
75		78
76	#define i8042_BUFFER_FULL_MASK 0x01	79	#define i8042_BUFFER_FULL_MASK 0x01
77	#define i8042_WAIT_MASK 0x02	80	#define i8042_WAIT_MASK 0x02
78	#define i8042_MOUSE_DATA 0x20	81	#define i8042_MOUSE_DATA 0x20
79		82
80	static void i8042_suspend(chardev_t *);	83	static void i8042_suspend(chardev_t *);
81	static void i8042_resume(chardev_t *);	84	static void i8042_resume(chardev_t *);
82		85
83	static chardev_operations_t ops = {	86	static chardev_operations_t ops = {
84	.suspend = i8042_suspend,	87	.suspend = i8042_suspend,
85	.resume = i8042_resume,	88	.resume = i8042_resume,
86	.read = i8042_key_read	89	.read = i8042_key_read
87	};	90	};
88		91
89	/** Structure for i8042's IRQ. */	92	/** Structure for i8042's IRQ. */
90	static irq_t i8042_kbd_irq;	93	static irq_t i8042_kbd_irq;
91	static irq_t i8042_mouse_irq;	94	static irq_t i8042_mouse_irq;
92		95
93	void i8042_grab(void)	96	void i8042_grab(void)
94	{	97	{
95	ipl_t ipl = interrupts_disable();	98	ipl_t ipl = interrupts_disable();
96		99
97	spinlock_lock(&i8042_kbd_irq.lock);	100	spinlock_lock(&i8042_kbd_irq.lock);
98	i8042_kbd_irq.notif_cfg.notify = false;	101	i8042_kbd_irq.notif_cfg.notify = false;
99	spinlock_unlock(&i8042_kbd_irq.lock);	102	spinlock_unlock(&i8042_kbd_irq.lock);
100		103
101	spinlock_lock(&i8042_mouse_irq.lock);	104	spinlock_lock(&i8042_mouse_irq.lock);
102	i8042_mouse_irq.notif_cfg.notify = false;	105	i8042_mouse_irq.notif_cfg.notify = false;
103	spinlock_unlock(&i8042_mouse_irq.lock);	106	spinlock_unlock(&i8042_mouse_irq.lock);
104		107
105	interrupts_restore(ipl);	108	interrupts_restore(ipl);
106	}	109	}
107		110
108	void i8042_release(void)	111	void i8042_release(void)
109	{	112	{
110	ipl_t ipl = interrupts_disable();	113	ipl_t ipl = interrupts_disable();
111		114
112	spinlock_lock(&i8042_kbd_irq.lock);	115	spinlock_lock(&i8042_kbd_irq.lock);
113	if (i8042_kbd_irq.notif_cfg.answerbox)	116	if (i8042_kbd_irq.notif_cfg.answerbox)
114	i8042_kbd_irq.notif_cfg.notify = true;	117	i8042_kbd_irq.notif_cfg.notify = true;
115	spinlock_unlock(&i8042_kbd_irq.lock);	118	spinlock_unlock(&i8042_kbd_irq.lock);
116		119
117	spinlock_lock(&i8042_mouse_irq.lock);	120	spinlock_lock(&i8042_mouse_irq.lock);
118	if (i8042_mouse_irq.notif_cfg.answerbox)	121	if (i8042_mouse_irq.notif_cfg.answerbox)
119	i8042_mouse_irq.notif_cfg.notify = true;	122	i8042_mouse_irq.notif_cfg.notify = true;
120	spinlock_unlock(&i8042_mouse_irq.lock);	123	spinlock_unlock(&i8042_mouse_irq.lock);
121		124
122	interrupts_restore(ipl);	125	interrupts_restore(ipl);
123	}	126	}
124		127
125	static irq_ownership_t i8042_claim(void)	128	static irq_ownership_t i8042_claim(void)
126	{	129	{
127	return IRQ_ACCEPT;	130	return IRQ_ACCEPT;
128	}	131	}
129		132
130	static void i8042_irq_handler(irq_t irq, void arg, ...)	133	static void i8042_irq_handler(irq_t irq, void arg, ...)
131	{	134	{
132	if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)	135	if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)
133	ipc_irq_send_notif(irq);	136	ipc_irq_send_notif(irq);
134	else {	137	else {
135	uint8_t data;	138	uint8_t data;
136	uint8_t status;	139	uint8_t status;
137		140
138	while (((status = i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {	141	while (((status = i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {
139	data = i8042_data_read();	142	data = i8042_data_read();
140		143
141	if ((status & i8042_MOUSE_DATA))	144	if ((status & i8042_MOUSE_DATA))
142	continue;	145	continue;
143		146
144	if (data & KEY_RELEASE)	147	if (data & KEY_RELEASE)
145	key_released(data ^ KEY_RELEASE);	148	key_released(data ^ KEY_RELEASE);
146	else	149	else
147	key_pressed(data);	150	key_pressed(data);
148	}	151	}
149	}	152	}
150	}	153	}
151		154
152	/** Initialize i8042. */	155	/** Initialize i8042. */
153	void i8042_init(devno_t kbd_devno, inr_t kbd_inr, devno_t mouse_devno, inr_t mouse_inr)	156	void i8042_init(devno_t kbd_devno, inr_t kbd_inr, devno_t mouse_devno, inr_t mouse_inr)
154	{	157	{
155	chardev_initialize("i8042_kbd", &kbrd, &ops);	158	chardev_initialize("i8042_kbd", &kbrd, &ops);
156	stdin = &kbrd;	159	stdin = &kbrd;
157		160
158	irq_initialize(&i8042_kbd_irq);	161	irq_initialize(&i8042_kbd_irq);
159	i8042_kbd_irq.devno = kbd_devno;	162	i8042_kbd_irq.devno = kbd_devno;
160	i8042_kbd_irq.inr = kbd_inr;	163	i8042_kbd_irq.inr = kbd_inr;
161	i8042_kbd_irq.claim = i8042_claim;	164	i8042_kbd_irq.claim = i8042_claim;
162	i8042_kbd_irq.handler = i8042_irq_handler;	165	i8042_kbd_irq.handler = i8042_irq_handler;
163	irq_register(&i8042_kbd_irq);	166	irq_register(&i8042_kbd_irq);
164		167
165	irq_initialize(&i8042_mouse_irq);	168	irq_initialize(&i8042_mouse_irq);
166	i8042_mouse_irq.devno = mouse_devno;	169	i8042_mouse_irq.devno = mouse_devno;
167	i8042_mouse_irq.inr = mouse_inr;	170	i8042_mouse_irq.inr = mouse_inr;
168	i8042_mouse_irq.claim = i8042_claim;	171	i8042_mouse_irq.claim = i8042_claim;
169	i8042_mouse_irq.handler = i8042_irq_handler;	172	i8042_mouse_irq.handler = i8042_irq_handler;
170	irq_register(&i8042_mouse_irq);	173	irq_register(&i8042_mouse_irq);
171	#ifndef ia64	174	#ifndef ia64
172	trap_virtual_enable_irqs(1 << kbd_inr);	175	trap_virtual_enable_irqs(1 << kbd_inr);
173	trap_virtual_enable_irqs(1 << mouse_inr);	176	trap_virtual_enable_irqs(1 << mouse_inr);
174	#endif	177	#endif
175	/*	178	/*
176	* Clear input buffer.	179	* Clear input buffer.
177	* Number of iterations is limited to prevent infinite looping.	180	* Number of iterations is limited to prevent infinite looping.
178	*/	181	*/
179	int i;	182	int i;
180	for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {	183	for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {
181	i8042_data_read();	184	i8042_data_read();
182	}	185	}
183		186
184	sysinfo_set_item_val("kbd", NULL, true);	187	sysinfo_set_item_val("kbd", NULL, true);
185	sysinfo_set_item_val("kbd.devno", NULL, kbd_devno);	188	sysinfo_set_item_val("kbd.devno", NULL, kbd_devno);
186	sysinfo_set_item_val("kbd.inr", NULL, kbd_inr);	189	sysinfo_set_item_val("kbd.inr", NULL, kbd_inr);
-		190	#ifdef KBD_LEGACY
-		191	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
187		192	#endif
188	sysinfo_set_item_val("mouse", NULL, true);	193	sysinfo_set_item_val("mouse", NULL, true);
189	sysinfo_set_item_val("mouse.devno", NULL, mouse_devno);	194	sysinfo_set_item_val("mouse.devno", NULL, mouse_devno);
190	sysinfo_set_item_val("mouse.inr", NULL, mouse_inr);	195	sysinfo_set_item_val("mouse.inr", NULL, mouse_inr);
191		196
192	i8042_grab();	197	i8042_grab();
193	}	198	}
194		199
195	/* Called from getc(). */	200	/* Called from getc(). */
196	void i8042_resume(chardev_t *d)	201	void i8042_resume(chardev_t *d)
197	{	202	{
198	}	203	}
199		204
200	/* Called from getc(). */	205	/* Called from getc(). */
201	void i8042_suspend(chardev_t *d)	206	void i8042_suspend(chardev_t *d)
202	{	207	{
203	}	208	}
204		209
205	char i8042_key_read(chardev_t *d)	210	char i8042_key_read(chardev_t *d)
206	{	211	{
207	char ch;	212	char ch;
208		213
209	while(!(ch = active_read_buff_read())) {	214	while(!(ch = active_read_buff_read())) {
210	uint8_t x;	215	uint8_t x;
211	while (!(i8042_status_read() & i8042_BUFFER_FULL_MASK))	216	while (!(i8042_status_read() & i8042_BUFFER_FULL_MASK))
212	;	217	;
213	x = i8042_data_read();	218	x = i8042_data_read();
214	if (x & KEY_RELEASE)	219	if (x & KEY_RELEASE)
215	key_released(x ^ KEY_RELEASE);	220	key_released(x ^ KEY_RELEASE);
216	else	221	else
217	active_read_key_pressed(x);	222	active_read_key_pressed(x);
218	}	223	}
219	return ch;	224	return ch;
220	}	225	}
221		226
222	/** Poll for key press and release events.	227	/** Poll for key press and release events.
223	*	228	*
224	* This function can be used to implement keyboard polling.	229	* This function can be used to implement keyboard polling.
225	*/	230	*/
226	void i8042_poll(void)	231	void i8042_poll(void)
227	{	232	{
228	uint8_t x;	233	uint8_t x;
229		234
230	while (((x = i8042_status_read() & i8042_BUFFER_FULL_MASK))) {	235	while (((x = i8042_status_read() & i8042_BUFFER_FULL_MASK))) {
231	x = i8042_data_read();	236	x = i8042_data_read();
232	if (x & KEY_RELEASE)	237	if (x & KEY_RELEASE)
233	key_released(x ^ KEY_RELEASE);	238	key_released(x ^ KEY_RELEASE);
234	else	239	else
235	key_pressed(x);	240	key_pressed(x);
236	}	241	}
237	}	242	}
238		243
239	/** @}	244	/** @}
240	*/	245	*/
241		246

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(root)/branches/dynload/kernel/genarch/src/kbd/i8042.c – Rev 2927 → 3674