WebSVN – HelenOS – Diff – /trunk/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 <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>
 
#define i8042_DATA  0x60
#define i8042_STATUS    0x64
 
/* 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 = pio_read_8(i8042_STATUS)) &
            i8042_BUFFER_FULL_MASK)) {
            data = pio_read_8(i8042_DATA);
           
            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; (pio_read_8(i8042_STATUS) & i8042_BUFFER_FULL_MASK) &&
        i < 100; i++) {
        (void) pio_read_8(i8042_DATA);
    }
   
    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 (!(pio_read_8(i8042_STATUS) & i8042_BUFFER_FULL_MASK))
            ;
       
        x = pio_read_8(i8042_STATUS);
        if (x & KEY_RELEASE)
            key_released(x ^ KEY_RELEASE);
        else
            active_read_key_pressed(x);
    }
    return ch;
}
 
/** @}
 */
 

Rev 3927	Rev 3928
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>	-
45	#include <cpu.h>	44	#include <cpu.h>
46	#include <arch/asm.h>	45	#include <arch/asm.h>
47	#include <arch.h>	46	#include <arch.h>
48	#include <console/chardev.h>	47	#include <console/chardev.h>
49	#include <console/console.h>	48	#include <console/console.h>
50	#include <interrupt.h>	49	#include <interrupt.h>
51	#include <sysinfo/sysinfo.h>	50	#include <sysinfo/sysinfo.h>
52	#include <ipc/irq.h>	51	#include <ipc/irq.h>
53		52
-		53	#define i8042_DATA 0x60
-		54	#define i8042_STATUS 0x64
-		55
54	/* Keyboard commands. */	56	/* Keyboard commands. */
55	#define KBD_ENABLE 0xf4	57	#define KBD_ENABLE 0xf4
56	#define KBD_DISABLE 0xf5	58	#define KBD_DISABLE 0xf5
57	#define KBD_ACK 0xfa	59	#define KBD_ACK 0xfa
58		60
59	/*	61	/*
60	* 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
61	* placed in 8042 command register. Format:	63	* placed in 8042 command register. Format:
62	*	64	*
63	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte	65	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte
64	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt	66	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt
65	* \| \| \| \| \| \| `----- should be 0	67	* \| \| \| \| \| \| `----- should be 0
66	* \| \| \| \| \| `------ 1=set status register system, 0=clear	68	* \| \| \| \| \| `------ 1=set status register system, 0=clear
67	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit	69	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit
68	* \| \| \| `-------- disable keyboard I/O by driving clock line low	70	* \| \| \| `-------- disable keyboard I/O by driving clock line low
69	* \| \| `--------- disable auxiliary device, drives clock line low	71	* \| \| `--------- disable auxiliary device, drives clock line low
70	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT	72	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT
71	* `----------- reserved, should be 0	73	* `----------- reserved, should be 0
72	*/	74	*/
73		75
74	#define i8042_SET_COMMAND 0x60	76	#define i8042_SET_COMMAND 0x60
75	#define i8042_COMMAND 0x69	77	#define i8042_COMMAND 0x69
76		78
77	#define i8042_BUFFER_FULL_MASK 0x01	79	#define i8042_BUFFER_FULL_MASK 0x01
78	#define i8042_WAIT_MASK 0x02	80	#define i8042_WAIT_MASK 0x02
79	#define i8042_MOUSE_DATA 0x20	81	#define i8042_MOUSE_DATA 0x20
80		82
81	static void i8042_suspend(chardev_t *);	83	static void i8042_suspend(chardev_t *);
82	static void i8042_resume(chardev_t *);	84	static void i8042_resume(chardev_t *);
83		85
84	static chardev_operations_t ops = {	86	static chardev_operations_t ops = {
85	.suspend = i8042_suspend,	87	.suspend = i8042_suspend,
86	.resume = i8042_resume,	88	.resume = i8042_resume,
87	.read = i8042_key_read	89	.read = i8042_key_read
88	};	90	};
89		91
90	/** Structure for i8042's IRQ. */	92	/** Structure for i8042's IRQ. */
91	static irq_t i8042_kbd_irq;	93	static irq_t i8042_kbd_irq;
92	static irq_t i8042_mouse_irq;	94	static irq_t i8042_mouse_irq;
93		95
94	void i8042_grab(void)	96	void i8042_grab(void)
95	{	97	{
96	ipl_t ipl = interrupts_disable();	98	ipl_t ipl = interrupts_disable();
97		99
98	spinlock_lock(&i8042_kbd_irq.lock);	100	spinlock_lock(&i8042_kbd_irq.lock);
99	i8042_kbd_irq.notif_cfg.notify = false;	101	i8042_kbd_irq.notif_cfg.notify = false;
100	spinlock_unlock(&i8042_kbd_irq.lock);	102	spinlock_unlock(&i8042_kbd_irq.lock);
101		103
102	spinlock_lock(&i8042_mouse_irq.lock);	104	spinlock_lock(&i8042_mouse_irq.lock);
103	i8042_mouse_irq.notif_cfg.notify = false;	105	i8042_mouse_irq.notif_cfg.notify = false;
104	spinlock_unlock(&i8042_mouse_irq.lock);	106	spinlock_unlock(&i8042_mouse_irq.lock);
105		107
106	interrupts_restore(ipl);	108	interrupts_restore(ipl);
107	}	109	}
108		110
109	void i8042_release(void)	111	void i8042_release(void)
110	{	112	{
111	ipl_t ipl = interrupts_disable();	113	ipl_t ipl = interrupts_disable();
112		114
113	spinlock_lock(&i8042_kbd_irq.lock);	115	spinlock_lock(&i8042_kbd_irq.lock);
114	if (i8042_kbd_irq.notif_cfg.answerbox)	116	if (i8042_kbd_irq.notif_cfg.answerbox)
115	i8042_kbd_irq.notif_cfg.notify = true;	117	i8042_kbd_irq.notif_cfg.notify = true;
116	spinlock_unlock(&i8042_kbd_irq.lock);	118	spinlock_unlock(&i8042_kbd_irq.lock);
117		119
118	spinlock_lock(&i8042_mouse_irq.lock);	120	spinlock_lock(&i8042_mouse_irq.lock);
119	if (i8042_mouse_irq.notif_cfg.answerbox)	121	if (i8042_mouse_irq.notif_cfg.answerbox)
120	i8042_mouse_irq.notif_cfg.notify = true;	122	i8042_mouse_irq.notif_cfg.notify = true;
121	spinlock_unlock(&i8042_mouse_irq.lock);	123	spinlock_unlock(&i8042_mouse_irq.lock);
122		124
123	interrupts_restore(ipl);	125	interrupts_restore(ipl);
124	}	126	}
125		127
126	static irq_ownership_t i8042_claim(void *instance)	128	static irq_ownership_t i8042_claim(void *instance)
127	{	129	{
128	return IRQ_ACCEPT;	130	return IRQ_ACCEPT;
129	}	131	}
130		132
131	static void i8042_irq_handler(irq_t *irq)	133	static void i8042_irq_handler(irq_t *irq)
132	{	134	{
133	if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)	135	if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)
134	ipc_irq_send_notif(irq);	136	ipc_irq_send_notif(irq);
135	else {	137	else {
136	uint8_t data;	138	uint8_t data;
137	uint8_t status;	139	uint8_t status;
138		140
139	while (((status = i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {	141	while (((status = pio_read_8(i8042_STATUS)) &
-		142	i8042_BUFFER_FULL_MASK)) {
140	data = i8042_data_read();	143	data = pio_read_8(i8042_DATA);
141		144
142	if ((status & i8042_MOUSE_DATA))	145	if ((status & i8042_MOUSE_DATA))
143	continue;	146	continue;
144		147
145	if (data & KEY_RELEASE)	148	if (data & KEY_RELEASE)
146	key_released(data ^ KEY_RELEASE);	149	key_released(data ^ KEY_RELEASE);
147	else	150	else
148	key_pressed(data);	151	key_pressed(data);
149	}	152	}
150	}	153	}
151	}	154	}
152		155
153	/** Initialize i8042. */	156	/** Initialize i8042. */
-		157	void
154	void i8042_init(devno_t kbd_devno, inr_t kbd_inr, devno_t mouse_devno, inr_t mouse_inr)	158	i8042_init(devno_t kbd_devno, inr_t kbd_inr, devno_t mouse_devno,
-		159	inr_t mouse_inr)
155	{	160	{
156	chardev_initialize("i8042_kbd", &kbrd, &ops);	161	chardev_initialize("i8042_kbd", &kbrd, &ops);
157	stdin = &kbrd;	162	stdin = &kbrd;
158		163
159	irq_initialize(&i8042_kbd_irq);	164	irq_initialize(&i8042_kbd_irq);
160	i8042_kbd_irq.devno = kbd_devno;	165	i8042_kbd_irq.devno = kbd_devno;
161	i8042_kbd_irq.inr = kbd_inr;	166	i8042_kbd_irq.inr = kbd_inr;
162	i8042_kbd_irq.claim = i8042_claim;	167	i8042_kbd_irq.claim = i8042_claim;
163	i8042_kbd_irq.handler = i8042_irq_handler;	168	i8042_kbd_irq.handler = i8042_irq_handler;
164	irq_register(&i8042_kbd_irq);	169	irq_register(&i8042_kbd_irq);
165		170
166	irq_initialize(&i8042_mouse_irq);	171	irq_initialize(&i8042_mouse_irq);
167	i8042_mouse_irq.devno = mouse_devno;	172	i8042_mouse_irq.devno = mouse_devno;
168	i8042_mouse_irq.inr = mouse_inr;	173	i8042_mouse_irq.inr = mouse_inr;
169	i8042_mouse_irq.claim = i8042_claim;	174	i8042_mouse_irq.claim = i8042_claim;
170	i8042_mouse_irq.handler = i8042_irq_handler;	175	i8042_mouse_irq.handler = i8042_irq_handler;
171	irq_register(&i8042_mouse_irq);	176	irq_register(&i8042_mouse_irq);
172		177
173	trap_virtual_enable_irqs(1 << kbd_inr);	178	trap_virtual_enable_irqs(1 << kbd_inr);
174	trap_virtual_enable_irqs(1 << mouse_inr);	179	trap_virtual_enable_irqs(1 << mouse_inr);
175		180
176	/*	181	/*
177	* Clear input buffer.	182	* Clear input buffer.
178	* Number of iterations is limited to prevent infinite looping.	183	* Number of iterations is limited to prevent infinite looping.
179	*/	184	*/
180	int i;	185	int i;
181	for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {	186	for (i = 0; (pio_read_8(i8042_STATUS) & i8042_BUFFER_FULL_MASK) &&
-		187	i < 100; i++) {
182	i8042_data_read();	188	(void) pio_read_8(i8042_DATA);
183	}	189	}
184		190
185	sysinfo_set_item_val("kbd", NULL, true);	191	sysinfo_set_item_val("kbd", NULL, true);
186	sysinfo_set_item_val("kbd.devno", NULL, kbd_devno);	192	sysinfo_set_item_val("kbd.devno", NULL, kbd_devno);
187	sysinfo_set_item_val("kbd.inr", NULL, kbd_inr);	193	sysinfo_set_item_val("kbd.inr", NULL, kbd_inr);
188	#ifdef KBD_LEGACY	194	#ifdef KBD_LEGACY
189	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);	195	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
190	#endif	196	#endif
191	sysinfo_set_item_val("mouse", NULL, true);	197	sysinfo_set_item_val("mouse", NULL, true);
192	sysinfo_set_item_val("mouse.devno", NULL, mouse_devno);	198	sysinfo_set_item_val("mouse.devno", NULL, mouse_devno);
193	sysinfo_set_item_val("mouse.inr", NULL, mouse_inr);	199	sysinfo_set_item_val("mouse.inr", NULL, mouse_inr);
194		200
195	i8042_grab();	201	i8042_grab();
196	}	202	}
197		203
198	/* Called from getc(). */	204	/* Called from getc(). */
199	void i8042_resume(chardev_t *d)	205	void i8042_resume(chardev_t *d)
200	{	206	{
201	}	207	}
202		208
203	/* Called from getc(). */	209	/* Called from getc(). */
204	void i8042_suspend(chardev_t *d)	210	void i8042_suspend(chardev_t *d)
205	{	211	{
206	}	212	}
207		213
208	char i8042_key_read(chardev_t *d)	214	char i8042_key_read(chardev_t *d)
209	{	215	{
210	char ch;	216	char ch;
211		217
212	while (!(ch = active_read_buff_read())) {	218	while (!(ch = active_read_buff_read())) {
213	uint8_t x;	219	uint8_t x;
214		220
215	while (!(i8042_status_read() & i8042_BUFFER_FULL_MASK));	221	while (!(pio_read_8(i8042_STATUS) & i8042_BUFFER_FULL_MASK))
-		222	;
216		223
217	x = i8042_data_read();	224	x = pio_read_8(i8042_STATUS);
218	if (x & KEY_RELEASE)	225	if (x & KEY_RELEASE)
219	key_released(x ^ KEY_RELEASE);	226	key_released(x ^ KEY_RELEASE);
220	else	227	else
221	active_read_key_pressed(x);	228	active_read_key_pressed(x);
222	}	229	}
223	return ch;	230	return ch;
224	}	231	}
225		232
226	/** @}	233	/** @}
227	*/	234	*/
228		235

Subversion Repositories HelenOS

(root)/trunk/kernel/genarch/src/kbd/i8042.c @ 3930 – Rev 3927 → 3928