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 <arch/drivers/kbd.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>
#include <sysinfo/sysinfo.h>
#include <print.h>
 
/*
 * These codes read from z8530 data register are silently ignored.
 */
#define IGNORE_CODE 0x7f        /* all keys up */
 
bool z8530_belongs_to_kernel = true;
 
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)
{
    z8530_belongs_to_kernel = true;
}
 
/** Resume the former interrupt vector */
void z8530_release(void)
{
    z8530_belongs_to_kernel = false;
}
 
/** Initialize z8530. */
void z8530_init(void)
{
    chardev_initialize("z8530_kbd", &kbrd, &ops);
    stdin = &kbrd;
 
    sysinfo_set_item_val("kbd", NULL, true);
    sysinfo_set_item_val("kbd.irq", NULL, 0);
    sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address);
 
    (void) z8530_read_a(RR8);
 
    /*
     * Clear any pending TX interrupts or we never manage
     * to set FHC UART interrupt state to idle.
     */
    z8530_write_a(WR0, WR0_TX_IP_RST);
 
    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 1849	Rev 1875
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/fhc.h>
42	#include <arch/drivers/z8530.h>	42	#include <arch/drivers/z8530.h>
43	#include <arch/interrupt.h>	43	#include <arch/interrupt.h>
-		44	#include <arch/drivers/kbd.h>
44	#include <cpu.h>	45	#include <cpu.h>
45	#include <arch/asm.h>	46	#include <arch/asm.h>
46	#include <arch.h>	47	#include <arch.h>
47	#include <typedefs.h>	48	#include <typedefs.h>
48	#include <console/chardev.h>	49	#include <console/chardev.h>
49	#include <console/console.h>	50	#include <console/console.h>
50	#include <interrupt.h>	51	#include <interrupt.h>
-		52	#include <sysinfo/sysinfo.h>
-		53	#include <print.h>
51		54
52	/*	55	/*
53	* These codes read from z8530 data register are silently ignored.	56	* These codes read from z8530 data register are silently ignored.
54	*/	57	*/
55	#define IGNORE_CODE 0x7f /* all keys up */	58	#define IGNORE_CODE 0x7f /* all keys up */
56		59
-		60	bool z8530_belongs_to_kernel = true;
-		61
57	static void z8530_suspend(chardev_t *);	62	static void z8530_suspend(chardev_t *);
58	static void z8530_resume(chardev_t *);	63	static void z8530_resume(chardev_t *);
59		64
60	chardev_t kbrd;	65	chardev_t kbrd;
61	static chardev_operations_t ops = {	66	static chardev_operations_t ops = {
62	.suspend = z8530_suspend,	67	.suspend = z8530_suspend,
63	.resume = z8530_resume,	68	.resume = z8530_resume,
64	.read = key_read	69	.read = key_read
65	};	70	};
66		71
67	void z8530_wait(void);	72	void z8530_wait(void);
68		73
69	/** Initialize keyboard and service interrupts using kernel routine */	74	/** Initialize keyboard and service interrupts using kernel routine */
70	void z8530_grab(void)	75	void z8530_grab(void)
71	{	76	{
-		77	z8530_belongs_to_kernel = true;
72	}	78	}
73		79
74	/** Resume the former interrupt vector */	80	/** Resume the former interrupt vector */
75	void z8530_release(void)	81	void z8530_release(void)
76	{	82	{
-		83	z8530_belongs_to_kernel = false;
77	}	84	}
78		85
79	/** Initialize z8530. */	86	/** Initialize z8530. */
80	void z8530_init(void)	87	void z8530_init(void)
81	{	88	{
82	chardev_initialize("z8530_kbd", &kbrd, &ops);	89	chardev_initialize("z8530_kbd", &kbrd, &ops);
83	stdin = &kbrd;	90	stdin = &kbrd;
84		91
-		92	sysinfo_set_item_val("kbd", NULL, true);
-		93	sysinfo_set_item_val("kbd.irq", NULL, 0);
-		94	sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address);
-		95
85	(void) z8530_read_a(RR8);	96	(void) z8530_read_a(RR8);
86		97
-		98	/*
-		99	* Clear any pending TX interrupts or we never manage
-		100	* to set FHC UART interrupt state to idle.
-		101	*/
-		102	z8530_write_a(WR0, WR0_TX_IP_RST);
-		103
87	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */	104	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */
88		105
89	/* 8 bits per character and enable receiver */	106	/* 8 bits per character and enable receiver */
90	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);	107	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);
91		108
92	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */	109	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */
93		110
94	/*	111	/*
95	* We need to initialize the FireHose Controller,	112	* We need to initialize the FireHose Controller,
96	* to which is this z8530 attached. Otherwise	113	* to which is this z8530 attached. Otherwise
97	* interrupts generated by the z8530 would not	114	* interrupts generated by the z8530 would not
98	* be forwarded to the CPU.	115	* be forwarded to the CPU.
99	*/	116	*/
100	fhc_init();	117	fhc_init();
101	}	118	}
102		119
103	/** Process z8530 interrupt.	120	/** Process z8530 interrupt.
104	*	121	*
105	* @param n Interrupt vector.	122	* @param n Interrupt vector.
106	* @param istate Interrupted state.	123	* @param istate Interrupted state.
107	*/	124	*/
108	void z8530_interrupt(void)	125	void z8530_interrupt(void)
109	{	126	{
110	z8530_poll();	127	z8530_poll();
111	}	128	}
112		129
113	/** Wait until the controller reads its data. */	130	/** Wait until the controller reads its data. */
114	void z8530_wait(void) {	131	void z8530_wait(void) {
115	}	132	}
116		133
117	/* Called from getc(). */	134	/* Called from getc(). */
118	void z8530_resume(chardev_t *d)	135	void z8530_resume(chardev_t *d)
119	{	136	{
120	}	137	}
121		138
122	/* Called from getc(). */	139	/* Called from getc(). */
123	void z8530_suspend(chardev_t *d)	140	void z8530_suspend(chardev_t *d)
124	{	141	{
125	}	142	}
126		143
127	char key_read(chardev_t *d)	144	char key_read(chardev_t *d)
128	{	145	{
129	char ch;	146	char ch;
130		147
131	while(!(ch = active_read_buff_read())) {	148	while(!(ch = active_read_buff_read())) {
132	uint8_t x;	149	uint8_t x;
133	while (!(z8530_read_a(RR0) & RR0_RCA))	150	while (!(z8530_read_a(RR0) & RR0_RCA))
134	;	151	;
135	x = z8530_read_a(RR8);	152	x = z8530_read_a(RR8);
136	if (x != IGNORE_CODE) {	153	if (x != IGNORE_CODE) {
137	if (x & KEY_RELEASE)	154	if (x & KEY_RELEASE)
138	key_released(x ^ KEY_RELEASE);	155	key_released(x ^ KEY_RELEASE);
139	else	156	else
140	active_read_key_pressed(x);	157	active_read_key_pressed(x);
141	}	158	}
142	}	159	}
143	return ch;	160	return ch;
144	}	161	}
145		162
146	/** Poll for key press and release events.	163	/** Poll for key press and release events.
147	*	164	*
148	* This function can be used to implement keyboard polling.	165	* This function can be used to implement keyboard polling.
149	*/	166	*/
150	void z8530_poll(void)	167	void z8530_poll(void)
151	{	168	{
152	uint8_t x;	169	uint8_t x;
153		170
154	while (z8530_read_a(RR0) & RR0_RCA) {	171	while (z8530_read_a(RR0) & RR0_RCA) {
155	x = z8530_read_a(RR8);	172	x = z8530_read_a(RR8);
156	if (x != IGNORE_CODE) {	173	if (x != IGNORE_CODE) {
157	if (x & KEY_RELEASE)	174	if (x & KEY_RELEASE)
158	key_released(x ^ KEY_RELEASE);	175	key_released(x ^ KEY_RELEASE);
159	else	176	else
160	key_pressed(x);	177	key_pressed(x);
161	}	178	}
162	}	179	}
163	}	180	}
164		181
165	/** @}	182	/** @}
166	*/	183	*/
167		184

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(root)/trunk/kernel/genarch/src/kbd/z8530.c – Rev 1849 → 1875