WebSVN – HelenOS – Diff – /trunk/kernel/genarch/src/kbd/z8530.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   Zilog 8530 serial port / keyboard driver.
 */
 
#include <genarch/kbd/z8530.h>
#include <genarch/kbd/key.h>
#include <genarch/kbd/scanc.h>
#include <genarch/kbd/scanc_sun.h>
#include <arch/drivers/fhc.h>
#include <arch/drivers/z8530.h>
 
#include <arch/interrupt.h>
#include <cpu.h>
#include <arch/asm.h>
#include <arch.h>
#include <typedefs.h>
#include <console/chardev.h>
#include <console/console.h>
#include <interrupt.h>
 
/*
 * These codes read from z8530 data register are silently ignored.
 */
#define IGNORE_CODE 0x7f        /* all keys up */
 
static void z8530_suspend(chardev_t *);
static void z8530_resume(chardev_t *);
 
chardev_t kbrd;
static chardev_operations_t ops = {
    .suspend = z8530_suspend,
    .resume = z8530_resume,
    .read = key_read
};
 
 
void z8530_wait(void);
 
/** Initialize keyboard and service interrupts using kernel routine */
void z8530_grab(void)
{
}
 
/** Resume the former interrupt vector */
void z8530_release(void)
{
}
 
 
 
/** Initialize z8530. */
void z8530_init(void)
{
    chardev_initialize("z8530_kbd", &kbrd, &ops);
    stdin = &kbrd;
 
    (void) z8530_read_a(RR8);
 
    z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */
 
 
    /* 8 bits per character and enable receiver */
    z8530_write_a(WR3, WR3_RX8BITSCH | WR3_RX_ENABLE);
   
    z8530_write_a(WR9, WR9_MIE);    /* Master Interrupt Enable. */
   
    /*
     * We need to initialize the FireHose Controller,
     * to which is this z8530 attached. Otherwise
     * interrupts generated by the z8530 would not
     * be forwarded to the CPU.
     */
    fhc_init();
}
 
/** Process z8530 interrupt.
 *
 * @param n Interrupt vector.
 * @param istate Interrupted state.
 */
void z8530_interrupt(void)
{
    z8530_poll();
}
 
/** Wait until the controller reads its data. */
void z8530_wait(void) {
}
 
/* Called from getc(). */
void z8530_resume(chardev_t *d)
{
}
 
/* Called from getc(). */
void z8530_suspend(chardev_t *d)
{
}
 
char key_read(chardev_t *d)
{
    char ch;   
 
    while(!(ch = active_read_buff_read())) {
        uint8_t x;
        while (!(z8530_read_a(RR0) & RR0_RCA))
            ;
        x = z8530_read_a(RR8);
        if (x != IGNORE_CODE) {
            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 z8530_poll(void)
{
    uint8_t x;
 
    while (z8530_read_a(RR0) & RR0_RCA) {
        x = z8530_read_a(RR8);
        if (x != IGNORE_CODE) {
            if (x & KEY_RELEASE)
                key_released(x ^ KEY_RELEASE);
            else
                key_pressed(x);
        }
    }
}
 
/** @}
 */
 

Rev 1848	Rev 1849
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 Zilog 8530 serial port / keyboard driver.	34	* @brief Zilog 8530 serial port / keyboard driver.
35	*/	35	*/
36		36
37	#include <genarch/kbd/z8530.h>	37	#include <genarch/kbd/z8530.h>
38	#include <genarch/kbd/key.h>	38	#include <genarch/kbd/key.h>
39	#include <genarch/kbd/scanc.h>	39	#include <genarch/kbd/scanc.h>
40	#include <genarch/kbd/scanc_sun.h>	40	#include <genarch/kbd/scanc_sun.h>
-		41	#include <arch/drivers/fhc.h>
41	#include <arch/drivers/z8530.h>	42	#include <arch/drivers/z8530.h>
42	#include <arch/drivers/kbd.h>	-
43	#include <arch/interrupt.h>	43	#include <arch/interrupt.h>
44	#include <cpu.h>	44	#include <cpu.h>
45	#include <arch/asm.h>	45	#include <arch/asm.h>
46	#include <arch.h>	46	#include <arch.h>
47	#include <typedefs.h>	47	#include <typedefs.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		51
52	/*	52	/*
53	* These codes read from z8530 data register are silently ignored.	53	* These codes read from z8530 data register are silently ignored.
54	*/	54	*/
55	#define IGNORE_CODE 0x7f /* all keys up */	55	#define IGNORE_CODE 0x7f /* all keys up */
56		56
57	static void z8530_suspend(chardev_t *);	57	static void z8530_suspend(chardev_t *);
58	static void z8530_resume(chardev_t *);	58	static void z8530_resume(chardev_t *);
59		59
60	chardev_t kbrd;	60	chardev_t kbrd;
61	static chardev_operations_t ops = {	61	static chardev_operations_t ops = {
62	.suspend = z8530_suspend,	62	.suspend = z8530_suspend,
63	.resume = z8530_resume,	63	.resume = z8530_resume,
64	.read = key_read	64	.read = key_read
65	};	65	};
66		66
67	void z8530_interrupt(int n, istate_t *istate);	-
68	void z8530_wait(void);	67	void z8530_wait(void);
69		68
70	/** Initialize keyboard and service interrupts using kernel routine */	69	/** Initialize keyboard and service interrupts using kernel routine */
71	void z8530_grab(void)	70	void z8530_grab(void)
72	{	71	{
73	}	72	}
-		73
74	/** Resume the former interrupt vector */	74	/** Resume the former interrupt vector */
75	void z8530_release(void)	75	void z8530_release(void)
76	{	76	{
77	}	77	}
78		78
79	#include <print.h>	-
80		-
81	/** Initialize z8530. */	79	/** Initialize z8530. */
82	void z8530_init(void)	80	void z8530_init(void)
83	{	81	{
84	chardev_initialize("z8530_kbd", &kbrd, &ops);	82	chardev_initialize("z8530_kbd", &kbrd, &ops);
85	stdin = &kbrd;	83	stdin = &kbrd;
86		84
-		85	(void) z8530_read_a(RR8);
-		86
87	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */	87	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */
88	z8530_write_a(WR2, 12); /* FIXME: IRQ12 ??? */	-
89		88
90	/* 8 bits per character and enable receiver */	89	/* 8 bits per character and enable receiver */
91	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);	90	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);
92		91
93	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */	92	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */
-		93
-		94	/*
-		95	* We need to initialize the FireHose Controller,
-		96	* to which is this z8530 attached. Otherwise
-		97	* interrupts generated by the z8530 would not
-		98	* be forwarded to the CPU.
-		99	*/
-		100	fhc_init();
94	}	101	}
95		102
96	/** Process z8530 interrupt.	103	/** Process z8530 interrupt.
97	*	104	*
98	* @param n Interrupt vector.	105	* @param n Interrupt vector.
99	* @param istate Interrupted state.	106	* @param istate Interrupted state.
100	*/	107	*/
101	void z8530_interrupt(int n, istate_t *istate)	108	void z8530_interrupt(void)
102	{	109	{
-		110	z8530_poll();
103	}	111	}
104		112
105	/** Wait until the controller reads its data. */	113	/** Wait until the controller reads its data. */
106	void z8530_wait(void) {	114	void z8530_wait(void) {
107	}	115	}
108		116
109	/* Called from getc(). */	117	/* Called from getc(). */
110	void z8530_resume(chardev_t *d)	118	void z8530_resume(chardev_t *d)
111	{	119	{
112	}	120	}
113		121
114	/* Called from getc(). */	122	/* Called from getc(). */
115	void z8530_suspend(chardev_t *d)	123	void z8530_suspend(chardev_t *d)
116	{	124	{
117	}	125	}
118		126
119	char key_read(chardev_t *d)	127	char key_read(chardev_t *d)
120	{	128	{
121	char ch;	129	char ch;
122		130
123	while(!(ch = active_read_buff_read())) {	131	while(!(ch = active_read_buff_read())) {
124	uint8_t x;	132	uint8_t x;
125	while (!(z8530_read_a(RR0) & RR0_RCA))	133	while (!(z8530_read_a(RR0) & RR0_RCA))
126	;	134	;
127	x = z8530_read_a(RR8);	135	x = z8530_read_a(RR8);
128	if (x != IGNORE_CODE) {	136	if (x != IGNORE_CODE) {
129	if (x & KEY_RELEASE)	137	if (x & KEY_RELEASE)
130	key_released(x ^ KEY_RELEASE);	138	key_released(x ^ KEY_RELEASE);
131	else	139	else
132	active_read_key_pressed(x);	140	active_read_key_pressed(x);
133	}	141	}
134	}	142	}
135	return ch;	143	return ch;
136	}	144	}
137		145
138	/** Poll for key press and release events.	146	/** Poll for key press and release events.
139	*	147	*
140	* This function can be used to implement keyboard polling.	148	* This function can be used to implement keyboard polling.
141	*/	149	*/
142	void z8530_poll(void)	150	void z8530_poll(void)
143	{	151	{
144	uint8_t x;	152	uint8_t x;
145		153
146	while (z8530_read_a(RR0) & RR0_RCA) {	154	while (z8530_read_a(RR0) & RR0_RCA) {
147	x = z8530_read_a(RR8);	155	x = z8530_read_a(RR8);
148	if (x != IGNORE_CODE) {	156	if (x != IGNORE_CODE) {
149	if (x & KEY_RELEASE)	157	if (x & KEY_RELEASE)
150	key_released(x ^ KEY_RELEASE);	158	key_released(x ^ KEY_RELEASE);
151	else	159	else
152	key_pressed(x);	160	key_pressed(x);
153	}	161	}
154	}	162	}
155	}	163	}
156		164
157	/** @}	165	/** @}
158	*/	166	*/
159		167

Subversion Repositories HelenOS

(root)/trunk/kernel/genarch/src/kbd/z8530.c – Rev 1848 → 1849