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>
#include <arch/drivers/kbd.h>
#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 *instance)
{
    return IRQ_ACCEPT;
}
 
static void i8042_irq_handler(irq_t *irq)
{
    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);
   
    trap_virtual_enable_irqs(1 << kbd_inr);
    trap_virtual_enable_irqs(1 << mouse_inr);
   
    /*
     * 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 4342	Rev 4343
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	#include <arch/drivers/kbd.h>	40	#include <arch/drivers/kbd.h>
41	#include <genarch/kbd/key.h>	41	#include <genarch/kbd/key.h>
42	#include <genarch/kbd/scanc.h>	42	#include <genarch/kbd/scanc.h>
43	#include <genarch/kbd/scanc_pc.h>	43	#include <genarch/kbd/scanc_pc.h>
44	#include <arch/drivers/i8042.h>	44	#include <arch/drivers/i8042.h>
45	#include <cpu.h>	45	#include <cpu.h>
46	#include <arch/asm.h>	46	#include <arch/asm.h>
47	#include <arch.h>	47	#include <arch.h>
48	#include <console/chardev.h>	48	#include <console/chardev.h>
49	#include <console/console.h>	49	#include <console/console.h>
50	#include <interrupt.h>	50	#include <interrupt.h>
51	#include <sysinfo/sysinfo.h>	51	#include <sysinfo/sysinfo.h>
52	#include <ipc/irq.h>	52	#include <ipc/irq.h>
53		53
54	/* Keyboard commands. */	54	/* Keyboard commands. */
55	#define KBD_ENABLE 0xf4	55	#define KBD_ENABLE 0xf4
56	#define KBD_DISABLE 0xf5	56	#define KBD_DISABLE 0xf5
57	#define KBD_ACK 0xfa	57	#define KBD_ACK 0xfa
58		58
59	/*	59	/*
60	* 60 Write 8042 Command Byte: next data byte written to port 60h is	60	* 60 Write 8042 Command Byte: next data byte written to port 60h is
61	* placed in 8042 command register. Format:	61	* placed in 8042 command register. Format:
62	*	62	*
63	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte	63	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte
64	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt	64	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt
65	* \| \| \| \| \| \| `----- should be 0	65	* \| \| \| \| \| \| `----- should be 0
66	* \| \| \| \| \| `------ 1=set status register system, 0=clear	66	* \| \| \| \| \| `------ 1=set status register system, 0=clear
67	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit	67	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit
68	* \| \| \| `-------- disable keyboard I/O by driving clock line low	68	* \| \| \| `-------- disable keyboard I/O by driving clock line low
69	* \| \| `--------- disable auxiliary device, drives clock line low	69	* \| \| `--------- disable auxiliary device, drives clock line low
70	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT	70	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT
71	* `----------- reserved, should be 0	71	* `----------- reserved, should be 0
72	*/	72	*/
73		73
74	#define i8042_SET_COMMAND 0x60	74	#define i8042_SET_COMMAND 0x60
75	#define i8042_COMMAND 0x69	75	#define i8042_COMMAND 0x69
76		76
77	#define i8042_BUFFER_FULL_MASK 0x01	77	#define i8042_BUFFER_FULL_MASK 0x01
78	#define i8042_WAIT_MASK 0x02	78	#define i8042_WAIT_MASK 0x02
79	#define i8042_MOUSE_DATA 0x20	79	#define i8042_MOUSE_DATA 0x20
80		80
81	static void i8042_suspend(chardev_t *);	81	static void i8042_suspend(chardev_t *);
82	static void i8042_resume(chardev_t *);	82	static void i8042_resume(chardev_t *);
83		83
84	static chardev_operations_t ops = {	84	static chardev_operations_t ops = {
85	.suspend = i8042_suspend,	85	.suspend = i8042_suspend,
86	.resume = i8042_resume,	86	.resume = i8042_resume,
87	.read = i8042_key_read	87	.read = i8042_key_read
88	};	88	};
89		89
90	/** Structure for i8042's IRQ. */	90	/** Structure for i8042's IRQ. */
91	static irq_t i8042_kbd_irq;	91	static irq_t i8042_kbd_irq;
92	static irq_t i8042_mouse_irq;	92	static irq_t i8042_mouse_irq;
93		93
94	void i8042_grab(void)	94	void i8042_grab(void)
95	{	95	{
96	ipl_t ipl = interrupts_disable();	96	ipl_t ipl = interrupts_disable();
97		97
98	spinlock_lock(&i8042_kbd_irq.lock);	98	spinlock_lock(&i8042_kbd_irq.lock);
99	i8042_kbd_irq.notif_cfg.notify = false;	99	i8042_kbd_irq.notif_cfg.notify = false;
100	spinlock_unlock(&i8042_kbd_irq.lock);	100	spinlock_unlock(&i8042_kbd_irq.lock);
101		101
102	spinlock_lock(&i8042_mouse_irq.lock);	102	spinlock_lock(&i8042_mouse_irq.lock);
103	i8042_mouse_irq.notif_cfg.notify = false;	103	i8042_mouse_irq.notif_cfg.notify = false;
104	spinlock_unlock(&i8042_mouse_irq.lock);	104	spinlock_unlock(&i8042_mouse_irq.lock);
105		105
106	interrupts_restore(ipl);	106	interrupts_restore(ipl);
107	}	107	}
108		108
109	void i8042_release(void)	109	void i8042_release(void)
110	{	110	{
111	ipl_t ipl = interrupts_disable();	111	ipl_t ipl = interrupts_disable();
112		112
113	spinlock_lock(&i8042_kbd_irq.lock);	113	spinlock_lock(&i8042_kbd_irq.lock);
114	if (i8042_kbd_irq.notif_cfg.answerbox)	114	if (i8042_kbd_irq.notif_cfg.answerbox)
115	i8042_kbd_irq.notif_cfg.notify = true;	115	i8042_kbd_irq.notif_cfg.notify = true;
116	spinlock_unlock(&i8042_kbd_irq.lock);	116	spinlock_unlock(&i8042_kbd_irq.lock);
117		117
118	spinlock_lock(&i8042_mouse_irq.lock);	118	spinlock_lock(&i8042_mouse_irq.lock);
119	if (i8042_mouse_irq.notif_cfg.answerbox)	119	if (i8042_mouse_irq.notif_cfg.answerbox)
120	i8042_mouse_irq.notif_cfg.notify = true;	120	i8042_mouse_irq.notif_cfg.notify = true;
121	spinlock_unlock(&i8042_mouse_irq.lock);	121	spinlock_unlock(&i8042_mouse_irq.lock);
122		122
123	interrupts_restore(ipl);	123	interrupts_restore(ipl);
124	}	124	}
125		125
126	static irq_ownership_t i8042_claim(void)	126	static irq_ownership_t i8042_claim(void *instance)
127	{	127	{
128	return IRQ_ACCEPT;	128	return IRQ_ACCEPT;
129	}	129	}
130		130
131	static void i8042_irq_handler(irq_t irq, void arg, ...)	131	static void i8042_irq_handler(irq_t *irq)
132	{	132	{
133	if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)	133	if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)
134	ipc_irq_send_notif(irq);	134	ipc_irq_send_notif(irq);
135	else {	135	else {
136	uint8_t data;	136	uint8_t data;
137	uint8_t status;	137	uint8_t status;
138		138
139	while (((status = i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {	139	while (((status = i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {
140	data = i8042_data_read();	140	data = i8042_data_read();
141		141
142	if ((status & i8042_MOUSE_DATA))	142	if ((status & i8042_MOUSE_DATA))
143	continue;	143	continue;
144		144
145	if (data & KEY_RELEASE)	145	if (data & KEY_RELEASE)
146	key_released(data ^ KEY_RELEASE);	146	key_released(data ^ KEY_RELEASE);
147	else	147	else
148	key_pressed(data);	148	key_pressed(data);
149	}	149	}
150	}	150	}
151	}	151	}
152		152
153	/** Initialize i8042. */	153	/** Initialize i8042. */
154	void i8042_init(devno_t kbd_devno, inr_t kbd_inr, devno_t mouse_devno, inr_t mouse_inr)	154	void i8042_init(devno_t kbd_devno, inr_t kbd_inr, devno_t mouse_devno, inr_t mouse_inr)
155	{	155	{
156	chardev_initialize("i8042_kbd", &kbrd, &ops);	156	chardev_initialize("i8042_kbd", &kbrd, &ops);
157	stdin = &kbrd;	157	stdin = &kbrd;
158		158
159	irq_initialize(&i8042_kbd_irq);	159	irq_initialize(&i8042_kbd_irq);
160	i8042_kbd_irq.devno = kbd_devno;	160	i8042_kbd_irq.devno = kbd_devno;
161	i8042_kbd_irq.inr = kbd_inr;	161	i8042_kbd_irq.inr = kbd_inr;
162	i8042_kbd_irq.claim = i8042_claim;	162	i8042_kbd_irq.claim = i8042_claim;
163	i8042_kbd_irq.handler = i8042_irq_handler;	163	i8042_kbd_irq.handler = i8042_irq_handler;
164	irq_register(&i8042_kbd_irq);	164	irq_register(&i8042_kbd_irq);
165		165
166	irq_initialize(&i8042_mouse_irq);	166	irq_initialize(&i8042_mouse_irq);
167	i8042_mouse_irq.devno = mouse_devno;	167	i8042_mouse_irq.devno = mouse_devno;
168	i8042_mouse_irq.inr = mouse_inr;	168	i8042_mouse_irq.inr = mouse_inr;
169	i8042_mouse_irq.claim = i8042_claim;	169	i8042_mouse_irq.claim = i8042_claim;
170	i8042_mouse_irq.handler = i8042_irq_handler;	170	i8042_mouse_irq.handler = i8042_irq_handler;
171	irq_register(&i8042_mouse_irq);	171	irq_register(&i8042_mouse_irq);
172		172
173	trap_virtual_enable_irqs(1 << kbd_inr);	173	trap_virtual_enable_irqs(1 << kbd_inr);
174	trap_virtual_enable_irqs(1 << mouse_inr);	174	trap_virtual_enable_irqs(1 << mouse_inr);
175		175
176	/*	176	/*
177	* Clear input buffer.	177	* Clear input buffer.
178	* Number of iterations is limited to prevent infinite looping.	178	* Number of iterations is limited to prevent infinite looping.
179	*/	179	*/
180	int i;	180	int i;
181	for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {	181	for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {
182	i8042_data_read();	182	i8042_data_read();
183	}	183	}
184		184
185	sysinfo_set_item_val("kbd", NULL, true);	185	sysinfo_set_item_val("kbd", NULL, true);
186	sysinfo_set_item_val("kbd.devno", NULL, kbd_devno);	186	sysinfo_set_item_val("kbd.devno", NULL, kbd_devno);
187	sysinfo_set_item_val("kbd.inr", NULL, kbd_inr);	187	sysinfo_set_item_val("kbd.inr", NULL, kbd_inr);
188	#ifdef KBD_LEGACY	188	#ifdef KBD_LEGACY
189	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);	189	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
190	#endif	190	#endif
191	sysinfo_set_item_val("mouse", NULL, true);	191	sysinfo_set_item_val("mouse", NULL, true);
192	sysinfo_set_item_val("mouse.devno", NULL, mouse_devno);	192	sysinfo_set_item_val("mouse.devno", NULL, mouse_devno);
193	sysinfo_set_item_val("mouse.inr", NULL, mouse_inr);	193	sysinfo_set_item_val("mouse.inr", NULL, mouse_inr);
194		194
195	i8042_grab();	195	i8042_grab();
196	}	196	}
197		197
198	/* Called from getc(). */	198	/* Called from getc(). */
199	void i8042_resume(chardev_t *d)	199	void i8042_resume(chardev_t *d)
200	{	200	{
201	}	201	}
202		202
203	/* Called from getc(). */	203	/* Called from getc(). */
204	void i8042_suspend(chardev_t *d)	204	void i8042_suspend(chardev_t *d)
205	{	205	{
206	}	206	}
207		207
208	char i8042_key_read(chardev_t *d)	208	char i8042_key_read(chardev_t *d)
209	{	209	{
210	char ch;	210	char ch;
211		211
212	while (!(ch = active_read_buff_read())) {	212	while (!(ch = active_read_buff_read())) {
213	uint8_t x;	213	uint8_t x;
214		214
215	while (!(i8042_status_read() & i8042_BUFFER_FULL_MASK));	215	while (!(i8042_status_read() & i8042_BUFFER_FULL_MASK));
216		216
217	x = i8042_data_read();	217	x = i8042_data_read();
218	if (x & KEY_RELEASE)	218	if (x & KEY_RELEASE)
219	key_released(x ^ KEY_RELEASE);	219	key_released(x ^ KEY_RELEASE);
220	else	220	else
221	active_read_key_pressed(x);	221	active_read_key_pressed(x);
222	}	222	}
223	return ch;	223	return ch;
224	}	224	}
225		225
226	/** Poll for key press and release events.	226	/** Poll for key press and release events.
227	*	227	*
228	* This function can be used to implement keyboard polling.	228	* This function can be used to implement keyboard polling.
229	*/	229	*/
230	void i8042_poll(void)	230	void i8042_poll(void)
231	{	231	{
232	uint8_t x;	232	uint8_t x;
233		233
234	while (((x = i8042_status_read() & i8042_BUFFER_FULL_MASK))) {	234	while (((x = i8042_status_read() & i8042_BUFFER_FULL_MASK))) {
235	x = i8042_data_read();	235	x = i8042_data_read();
236	if (x & KEY_RELEASE)	236	if (x & KEY_RELEASE)
237	key_released(x ^ KEY_RELEASE);	237	key_released(x ^ KEY_RELEASE);
238	else	238	else
239	key_pressed(x);	239	key_pressed(x);
240	}	240	}
241	}	241	}
242		242
243	/** @}	243	/** @}
244	*/	244	*/
245		245

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(root)/branches/dynload/kernel/genarch/src/kbd/i8042.c @ 4343 – Rev 4342 → 4343