WebSVN – HelenOS – Diff – /branches/dd/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 <ddi.h>
#include <libarch/ddi.h>
#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[] = {
    {
        .cmd = CMD_PIO_READ_8,
        .addr = NULL,   /* will be patched in run-time */
        .dstarg = 1
    },
    {
        .cmd = CMD_BTEST,
        .value = i8042_OUTPUT_FULL,
        .srcarg = 1,
        .dstarg = 3
    },
    {
        .cmd = CMD_PREDICATE,
        .value = 2,
        .srcarg = 3
    },
    {
        .cmd = CMD_PIO_READ_8,
        .addr = NULL,   /* will be patched in run-time */
        .dstarg = 2
    },
    {
        .cmd = CMD_ACCEPT
    }
};
 
static irq_code_t i8042_kbd = {
    sizeof(i8042_cmds) / sizeof(irq_cmd_t),
    i8042_cmds
};
 
static uintptr_t i8042_physical;
static uintptr_t i8042_kernel;
static i8042_t * i8042;
 
static void wait_ready(void) {
    while (pio_read_8(&i8042->status) & i8042_INPUT_FULL)
        ;
}
 
static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call);
 
int kbd_port_init(void)
{
    int mouseenabled = 0;
    void *vaddr;
 
    i8042_physical = sysinfo_value("kbd.address.physical");
    i8042_kernel = sysinfo_value("kbd.address.kernel");
    if (pio_enable((void *) i8042_physical, sizeof(i8042_t), &vaddr) != 0)
        return -1;
    i8042 = vaddr;
 
    async_set_interrupt_received(i8042_irq_handler);
 
    /* Disable kbd, enable mouse */
    pio_write_8(&i8042->status, i8042_CMD_KBD);
    wait_ready();
    pio_write_8(&i8042->status, i8042_CMD_KBD);
    wait_ready();
    pio_write_8(&i8042->data, i8042_KBD_DISABLE);
    wait_ready();
 
    /* Flush all current IO */
    while (pio_read_8(&i8042->status) & i8042_OUTPUT_FULL)
        (void) pio_read_8(&i8042->data);
   
    /* Enable kbd */
    i8042_kbd.cmds[0].addr = &((i8042_t *) i8042_kernel)->status;
    i8042_kbd.cmds[3].addr = &((i8042_t *) i8042_kernel)->data;
    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;
   
    pio_write_8(&i8042->status, i8042_CMD_KBD);
    wait_ready();
    pio_write_8(&i8042->data, 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;
 
    int scan_code = IPC_GET_ARG2(*call);
 
    kbd_push_scancode(scan_code);
    return;
}
 
/**
 * @}
 */
 

Rev 4026	Rev 4055
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_port	30	/** @addtogroup kbd_port
31	* @ingroup kbd	31	* @ingroup kbd
32	* @{	32	* @{
33	*/	33	*/
34	/** @file	34	/** @file
35	* @brief i8042 port driver.	35	* @brief i8042 port driver.
36	*/	36	*/
37		37
38	#include <ddi.h>	38	#include <ddi.h>
39	#include <libarch/ddi.h>	39	#include <libarch/ddi.h>
40	#include <ipc/ipc.h>	40	#include <ipc/ipc.h>
41	#include <async.h>	41	#include <async.h>
42	#include <unistd.h>	42	#include <unistd.h>
43	#include <sysinfo.h>	43	#include <sysinfo.h>
44	#include <kbd_port.h>	44	#include <kbd_port.h>
45	#include <kbd.h>	45	#include <kbd.h>
46	#include "i8042.h"	46	#include "i8042.h"
47		47
48	/* Interesting bits for status register */	48	/* Interesting bits for status register */
49	#define i8042_OUTPUT_FULL 0x1	49	#define i8042_OUTPUT_FULL 0x1
50	#define i8042_INPUT_FULL 0x2	50	#define i8042_INPUT_FULL 0x2
51	#define i8042_MOUSE_DATA 0x20	51	#define i8042_MOUSE_DATA 0x20
52		52
53	/* Command constants */	53	/* Command constants */
54	#define i8042_CMD_KBD 0x60	54	#define i8042_CMD_KBD 0x60
55	#define i8042_CMD_MOUSE 0xd4	55	#define i8042_CMD_MOUSE 0xd4
56		56
57	/* Keyboard cmd byte */	57	/* Keyboard cmd byte */
58	#define i8042_KBD_IE 0x1	58	#define i8042_KBD_IE 0x1
59	#define i8042_MOUSE_IE 0x2	59	#define i8042_MOUSE_IE 0x2
60	#define i8042_KBD_DISABLE 0x10	60	#define i8042_KBD_DISABLE 0x10
61	#define i8042_MOUSE_DISABLE 0x20	61	#define i8042_MOUSE_DISABLE 0x20
62	#define i8042_KBD_TRANSLATE 0x40	62	#define i8042_KBD_TRANSLATE 0x40
63		63
64	/* Mouse constants */	64	/* Mouse constants */
65	#define MOUSE_OUT_INIT 0xf4	65	#define MOUSE_OUT_INIT 0xf4
66	#define MOUSE_ACK 0xfa	66	#define MOUSE_ACK 0xfa
67		67
68	static irq_cmd_t i8042_cmds[] = {	68	static irq_cmd_t i8042_cmds[] = {
69	{	69	{
70	.cmd = CMD_PIO_READ_8,	70	.cmd = CMD_PIO_READ_8,
71	.addr = NULL, /* will be patched in run-time */	71	.addr = NULL, /* will be patched in run-time */
72	.dstarg = 1	72	.dstarg = 1
73	},	73	},
74	{	74	{
75	.cmd = CMD_BTEST,	75	.cmd = CMD_BTEST,
76	.value = i8042_OUTPUT_FULL,	76	.value = i8042_OUTPUT_FULL,
77	.srcarg = 1,	77	.srcarg = 1,
78	.dstarg = 3	78	.dstarg = 3
79	},	79	},
80	{	80	{
81	.cmd = CMD_PREDICATE,	81	.cmd = CMD_PREDICATE,
82	.value = 2,	82	.value = 2,
83	.srcarg = 3	83	.srcarg = 3
84	},	84	},
85	{	85	{
86	.cmd = CMD_PIO_READ_8,	86	.cmd = CMD_PIO_READ_8,
87	.addr = NULL, /* will be patched in run-time */	87	.addr = NULL, /* will be patched in run-time */
88	.dstarg = 2	88	.dstarg = 2
89	},	89	},
90	{	90	{
91	.cmd = CMD_ACCEPT	91	.cmd = CMD_ACCEPT
92	}	92	}
93	};	93	};
94		94
95	static irq_code_t i8042_kbd = {	95	static irq_code_t i8042_kbd = {
96	sizeof(i8042_cmds) / sizeof(irq_cmd_t),	96	sizeof(i8042_cmds) / sizeof(irq_cmd_t),
97	i8042_cmds	97	i8042_cmds
98	};	98	};
99		99
100	static uintptr_t i8042_physical;	100	static uintptr_t i8042_physical;
101	static uintptr_t i8042_kernel;	101	static uintptr_t i8042_kernel;
102	static i8042_t * i8042;	102	static i8042_t * i8042;
103		103
104	static void wait_ready(void) {	104	static void wait_ready(void) {
105	while (pio_read_8(&i8042->status) & i8042_INPUT_FULL)	105	while (pio_read_8(&i8042->status) & i8042_INPUT_FULL)
106	;	106	;
107	}	107	}
108		108
109	static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call);	109	static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call);
110		110
111	int kbd_port_init(void)	111	int kbd_port_init(void)
112	{	112	{
113	int mouseenabled = 0;	113	int mouseenabled = 0;
114	void *vaddr;	114	void *vaddr;
115		115
116	i8042_physical = sysinfo_value("kbd.address.physical");	116	i8042_physical = sysinfo_value("kbd.address.physical");
117	i8042_kernel = sysinfo_value("kbd.address.kernel");	117	i8042_kernel = sysinfo_value("kbd.address.kernel");
118	if (pio_enable((void *) i8042_physical, sizeof(i8042_t), &vaddr) != 0)	118	if (pio_enable((void *) i8042_physical, sizeof(i8042_t), &vaddr) != 0)
119	return -1;	119	return -1;
120	i8042 = vaddr;	120	i8042 = vaddr;
121		121
122	async_set_interrupt_received(i8042_irq_handler);	122	async_set_interrupt_received(i8042_irq_handler);
123		123
124	/* Disable kbd, enable mouse */	124	/* Disable kbd, enable mouse */
125	pio_write_8(&i8042->status, i8042_CMD_KBD);	125	pio_write_8(&i8042->status, i8042_CMD_KBD);
126	wait_ready();	126	wait_ready();
127	pio_write_8(&i8042->status, i8042_CMD_KBD);	127	pio_write_8(&i8042->status, i8042_CMD_KBD);
128	wait_ready();	128	wait_ready();
129	pio_write_8(&i8042->data, i8042_KBD_DISABLE);	129	pio_write_8(&i8042->data, i8042_KBD_DISABLE);
130	wait_ready();	130	wait_ready();
131		131
132	/* Flush all current IO */	132	/* Flush all current IO */
133	while (pio_read_8(&i8042->status) & i8042_OUTPUT_FULL)	133	while (pio_read_8(&i8042->status) & i8042_OUTPUT_FULL)
134	(void) pio_read_8(&i8042->data);	134	(void) pio_read_8(&i8042->data);
135		135
136	/* Enable kbd */	136	/* Enable kbd */
137	i8042_kbd.cmds[0].addr = &((i8042_t *) i8042_kernel)->status;	137	i8042_kbd.cmds[0].addr = &((i8042_t *) i8042_kernel)->status;
138	i8042_kbd.cmds[3].addr = &((i8042_t *) i8042_kernel)->data;	138	i8042_kbd.cmds[3].addr = &((i8042_t *) i8042_kernel)->data;
139	ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd);	139	ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd);
140		140
141	int newcontrol = i8042_KBD_IE \| i8042_KBD_TRANSLATE;	141	int newcontrol = i8042_KBD_IE \| i8042_KBD_TRANSLATE;
142	if (mouseenabled)	142	if (mouseenabled)
143	newcontrol \|= i8042_MOUSE_IE;	143	newcontrol \|= i8042_MOUSE_IE;
144		144
145	pio_write_8(&i8042->status, i8042_CMD_KBD);	145	pio_write_8(&i8042->status, i8042_CMD_KBD);
146	wait_ready();	146	wait_ready();
147	pio_write_8(&i8042->data, newcontrol);	147	pio_write_8(&i8042->data, newcontrol);
148	wait_ready();	148	wait_ready();
149		149
150	return 0;	150	return 0;
151	}	151	}
152		152
153	static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call)	153	static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call)
154	{	154	{
155	int status = IPC_GET_ARG1(*call);	155	int status = IPC_GET_ARG1(*call);
156		156
157	if ((status & i8042_MOUSE_DATA))	157	if ((status & i8042_MOUSE_DATA))
158	return;	158	return;
159		159
160	int scan_code = IPC_GET_ARG2(*call);	160	int scan_code = IPC_GET_ARG2(*call);
161		161
162	kbd_push_scancode(scan_code);	162	kbd_push_scancode(scan_code);
163	return;	163	return;
164	}	164	}
165		165
166	/**	166	/**
167	* @}	167	* @}
168	*/	168	*/
169		169

Subversion Repositories HelenOS

(root)/branches/dd/uspace/srv/kbd/port/i8042.c @ 4201 – Rev 4026 → 4055