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 *);
 
 
static chardev_operations_t ops = {
    .suspend = z8530_suspend,
    .resume = z8530_resume,
    .read = z8530_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 z8530_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 1875	Rev 1896
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 <arch/drivers/kbd.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 <typedefs.h>	48	#include <typedefs.h>
49	#include <console/chardev.h>	49	#include <console/chardev.h>
50	#include <console/console.h>	50	#include <console/console.h>
51	#include <interrupt.h>	51	#include <interrupt.h>
52	#include <sysinfo/sysinfo.h>	52	#include <sysinfo/sysinfo.h>
53	#include <print.h>	53	#include <print.h>
54		54
55	/*	55	/*
56	* These codes read from z8530 data register are silently ignored.	56	* These codes read from z8530 data register are silently ignored.
57	*/	57	*/
58	#define IGNORE_CODE 0x7f /* all keys up */	58	#define IGNORE_CODE 0x7f /* all keys up */
59		59
60	bool z8530_belongs_to_kernel = true;	60	bool z8530_belongs_to_kernel = true;
61		61
62	static void z8530_suspend(chardev_t *);	62	static void z8530_suspend(chardev_t *);
63	static void z8530_resume(chardev_t *);	63	static void z8530_resume(chardev_t *);
64		64
65	chardev_t kbrd;	-
66	static chardev_operations_t ops = {	65	static chardev_operations_t ops = {
67	.suspend = z8530_suspend,	66	.suspend = z8530_suspend,
68	.resume = z8530_resume,	67	.resume = z8530_resume,
69	.read = key_read	68	.read = z8530_key_read
70	};	69	};
71		70
72	void z8530_wait(void);	71	void z8530_wait(void);
73		72
74	/** Initialize keyboard and service interrupts using kernel routine */	73	/** Initialize keyboard and service interrupts using kernel routine */
75	void z8530_grab(void)	74	void z8530_grab(void)
76	{	75	{
77	z8530_belongs_to_kernel = true;	76	z8530_belongs_to_kernel = true;
78	}	77	}
79		78
80	/** Resume the former interrupt vector */	79	/** Resume the former interrupt vector */
81	void z8530_release(void)	80	void z8530_release(void)
82	{	81	{
83	z8530_belongs_to_kernel = false;	82	z8530_belongs_to_kernel = false;
84	}	83	}
85		84
86	/** Initialize z8530. */	85	/** Initialize z8530. */
87	void z8530_init(void)	86	void z8530_init(void)
88	{	87	{
89	chardev_initialize("z8530_kbd", &kbrd, &ops);	88	chardev_initialize("z8530_kbd", &kbrd, &ops);
90	stdin = &kbrd;	89	stdin = &kbrd;
91		90
92	sysinfo_set_item_val("kbd", NULL, true);	91	sysinfo_set_item_val("kbd", NULL, true);
93	sysinfo_set_item_val("kbd.irq", NULL, 0);	92	sysinfo_set_item_val("kbd.irq", NULL, 0);
94	sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address);	93	sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address);
95		94
96	(void) z8530_read_a(RR8);	95	(void) z8530_read_a(RR8);
97		96
98	/*	97	/*
99	* Clear any pending TX interrupts or we never manage	98	* Clear any pending TX interrupts or we never manage
100	* to set FHC UART interrupt state to idle.	99	* to set FHC UART interrupt state to idle.
101	*/	100	*/
102	z8530_write_a(WR0, WR0_TX_IP_RST);	101	z8530_write_a(WR0, WR0_TX_IP_RST);
103		102
104	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */	103	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */
105		104
106	/* 8 bits per character and enable receiver */	105	/* 8 bits per character and enable receiver */
107	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);	106	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);
108		107
109	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */	108	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */
110		109
111	/*	110	/*
112	* We need to initialize the FireHose Controller,	111	* We need to initialize the FireHose Controller,
113	* to which is this z8530 attached. Otherwise	112	* to which is this z8530 attached. Otherwise
114	* interrupts generated by the z8530 would not	113	* interrupts generated by the z8530 would not
115	* be forwarded to the CPU.	114	* be forwarded to the CPU.
116	*/	115	*/
117	fhc_init();	116	fhc_init();
118	}	117	}
119		118
120	/** Process z8530 interrupt.	119	/** Process z8530 interrupt.
121	*	120	*
122	* @param n Interrupt vector.	121	* @param n Interrupt vector.
123	* @param istate Interrupted state.	122	* @param istate Interrupted state.
124	*/	123	*/
125	void z8530_interrupt(void)	124	void z8530_interrupt(void)
126	{	125	{
127	z8530_poll();	126	z8530_poll();
128	}	127	}
129		128
130	/** Wait until the controller reads its data. */	129	/** Wait until the controller reads its data. */
131	void z8530_wait(void) {	130	void z8530_wait(void) {
132	}	131	}
133		132
134	/* Called from getc(). */	133	/* Called from getc(). */
135	void z8530_resume(chardev_t *d)	134	void z8530_resume(chardev_t *d)
136	{	135	{
137	}	136	}
138		137
139	/* Called from getc(). */	138	/* Called from getc(). */
140	void z8530_suspend(chardev_t *d)	139	void z8530_suspend(chardev_t *d)
141	{	140	{
142	}	141	}
143		142
144	char key_read(chardev_t *d)	143	char z8530_key_read(chardev_t *d)
145	{	144	{
146	char ch;	145	char ch;
147		146
148	while(!(ch = active_read_buff_read())) {	147	while(!(ch = active_read_buff_read())) {
149	uint8_t x;	148	uint8_t x;
150	while (!(z8530_read_a(RR0) & RR0_RCA))	149	while (!(z8530_read_a(RR0) & RR0_RCA))
151	;	150	;
152	x = z8530_read_a(RR8);	151	x = z8530_read_a(RR8);
153	if (x != IGNORE_CODE) {	152	if (x != IGNORE_CODE) {
154	if (x & KEY_RELEASE)	153	if (x & KEY_RELEASE)
155	key_released(x ^ KEY_RELEASE);	154	key_released(x ^ KEY_RELEASE);
156	else	155	else
157	active_read_key_pressed(x);	156	active_read_key_pressed(x);
158	}	157	}
159	}	158	}
160	return ch;	159	return ch;
161	}	160	}
162		161
163	/** Poll for key press and release events.	162	/** Poll for key press and release events.
164	*	163	*
165	* This function can be used to implement keyboard polling.	164	* This function can be used to implement keyboard polling.
166	*/	165	*/
167	void z8530_poll(void)	166	void z8530_poll(void)
168	{	167	{
169	uint8_t x;	168	uint8_t x;
170		169
171	while (z8530_read_a(RR0) & RR0_RCA) {	170	while (z8530_read_a(RR0) & RR0_RCA) {
172	x = z8530_read_a(RR8);	171	x = z8530_read_a(RR8);
173	if (x != IGNORE_CODE) {	172	if (x != IGNORE_CODE) {
174	if (x & KEY_RELEASE)	173	if (x & KEY_RELEASE)
175	key_released(x ^ KEY_RELEASE);	174	key_released(x ^ KEY_RELEASE);
176	else	175	else
177	key_pressed(x);	176	key_pressed(x);
178	}	177	}
179	}	178	}
180	}	179	}
181		180
182	/** @}	181	/** @}
183	*/	182	*/
184		183

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(root)/trunk/kernel/genarch/src/kbd/z8530.c – Rev 1875 → 1896