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/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. */
 
 
 
 
 
 
 
 
}
 
/** 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 1896	Rev 1909
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>	-
42	#include <arch/drivers/z8530.h>	41	#include <arch/drivers/z8530.h>
43	#include <arch/interrupt.h>	42	#include <arch/interrupt.h>
44	#include <arch/drivers/kbd.h>	43	#include <arch/drivers/kbd.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 <typedefs.h>	47	#include <typedefs.h>
49	#include <console/chardev.h>	48	#include <console/chardev.h>
50	#include <console/console.h>	49	#include <console/console.h>
51	#include <interrupt.h>	50	#include <interrupt.h>
52	#include <sysinfo/sysinfo.h>	51	#include <sysinfo/sysinfo.h>
53	#include <print.h>	52	#include <print.h>
54		53
55	/*	54	/*
56	* These codes read from z8530 data register are silently ignored.	55	* These codes read from z8530 data register are silently ignored.
57	*/	56	*/
58	#define IGNORE_CODE 0x7f /* all keys up */	57	#define IGNORE_CODE 0x7f /* all keys up */
59		58
60	bool z8530_belongs_to_kernel = true;	59	bool z8530_belongs_to_kernel = true;
61		60
62	static void z8530_suspend(chardev_t *);	61	static void z8530_suspend(chardev_t *);
63	static void z8530_resume(chardev_t *);	62	static void z8530_resume(chardev_t *);
64		63
65	static chardev_operations_t ops = {	64	static chardev_operations_t ops = {
66	.suspend = z8530_suspend,	65	.suspend = z8530_suspend,
67	.resume = z8530_resume,	66	.resume = z8530_resume,
68	.read = z8530_key_read	67	.read = z8530_key_read
69	};	68	};
70		69
71	void z8530_wait(void);	70	void z8530_wait(void);
72		71
73	/** Initialize keyboard and service interrupts using kernel routine */	72	/** Initialize keyboard and service interrupts using kernel routine */
74	void z8530_grab(void)	73	void z8530_grab(void)
75	{	74	{
76	z8530_belongs_to_kernel = true;	75	z8530_belongs_to_kernel = true;
77	}	76	}
78		77
79	/** Resume the former interrupt vector */	78	/** Resume the former interrupt vector */
80	void z8530_release(void)	79	void z8530_release(void)
81	{	80	{
82	z8530_belongs_to_kernel = false;	81	z8530_belongs_to_kernel = false;
83	}	82	}
84		83
85	/** Initialize z8530. */	84	/** Initialize z8530. */
86	void z8530_init(void)	85	void z8530_init(void)
87	{	86	{
88	chardev_initialize("z8530_kbd", &kbrd, &ops);	87	chardev_initialize("z8530_kbd", &kbrd, &ops);
89	stdin = &kbrd;	88	stdin = &kbrd;
90		89
91	sysinfo_set_item_val("kbd", NULL, true);	90	sysinfo_set_item_val("kbd", NULL, true);
92	sysinfo_set_item_val("kbd.irq", NULL, 0);	91	sysinfo_set_item_val("kbd.irq", NULL, 0);
93	sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address);	92	sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address);
94		93
95	(void) z8530_read_a(RR8);	94	(void) z8530_read_a(RR8);
96		95
97	/*	96	/*
98	* Clear any pending TX interrupts or we never manage	97	* Clear any pending TX interrupts or we never manage
99	* to set FHC UART interrupt state to idle.	98	* to set FHC UART interrupt state to idle.
100	*/	99	*/
101	z8530_write_a(WR0, WR0_TX_IP_RST);	100	z8530_write_a(WR0, WR0_TX_IP_RST);
102		101
103	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */	102	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */
104		103
105	/* 8 bits per character and enable receiver */	104	/* 8 bits per character and enable receiver */
106	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);	105	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);
107		106
108	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */	107	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */
109		-
110	/*	-
111	* We need to initialize the FireHose Controller,	-
112	* to which is this z8530 attached. Otherwise	-
113	* interrupts generated by the z8530 would not	-
114	* be forwarded to the CPU.	-
115	*/	-
116	fhc_init();	-
117	}	108	}
118		109
119	/** Process z8530 interrupt.	110	/** Process z8530 interrupt.
120	*	111	*
121	* @param n Interrupt vector.	112	* @param n Interrupt vector.
122	* @param istate Interrupted state.	113	* @param istate Interrupted state.
123	*/	114	*/
124	void z8530_interrupt(void)	115	void z8530_interrupt(void)
125	{	116	{
126	z8530_poll();	117	z8530_poll();
127	}	118	}
128		119
129	/** Wait until the controller reads its data. */	120	/** Wait until the controller reads its data. */
130	void z8530_wait(void) {	121	void z8530_wait(void) {
131	}	122	}
132		123
133	/* Called from getc(). */	124	/* Called from getc(). */
134	void z8530_resume(chardev_t *d)	125	void z8530_resume(chardev_t *d)
135	{	126	{
136	}	127	}
137		128
138	/* Called from getc(). */	129	/* Called from getc(). */
139	void z8530_suspend(chardev_t *d)	130	void z8530_suspend(chardev_t *d)
140	{	131	{
141	}	132	}
142		133
143	char z8530_key_read(chardev_t *d)	134	char z8530_key_read(chardev_t *d)
144	{	135	{
145	char ch;	136	char ch;
146		137
147	while(!(ch = active_read_buff_read())) {	138	while(!(ch = active_read_buff_read())) {
148	uint8_t x;	139	uint8_t x;
149	while (!(z8530_read_a(RR0) & RR0_RCA))	140	while (!(z8530_read_a(RR0) & RR0_RCA))
150	;	141	;
151	x = z8530_read_a(RR8);	142	x = z8530_read_a(RR8);
152	if (x != IGNORE_CODE) {	143	if (x != IGNORE_CODE) {
153	if (x & KEY_RELEASE)	144	if (x & KEY_RELEASE)
154	key_released(x ^ KEY_RELEASE);	145	key_released(x ^ KEY_RELEASE);
155	else	146	else
156	active_read_key_pressed(x);	147	active_read_key_pressed(x);
157	}	148	}
158	}	149	}
159	return ch;	150	return ch;
160	}	151	}
161		152
162	/** Poll for key press and release events.	153	/** Poll for key press and release events.
163	*	154	*
164	* This function can be used to implement keyboard polling.	155	* This function can be used to implement keyboard polling.
165	*/	156	*/
166	void z8530_poll(void)	157	void z8530_poll(void)
167	{	158	{
168	uint8_t x;	159	uint8_t x;
169		160
170	while (z8530_read_a(RR0) & RR0_RCA) {	161	while (z8530_read_a(RR0) & RR0_RCA) {
171	x = z8530_read_a(RR8);	162	x = z8530_read_a(RR8);
172	if (x != IGNORE_CODE) {	163	if (x != IGNORE_CODE) {
173	if (x & KEY_RELEASE)	164	if (x & KEY_RELEASE)
174	key_released(x ^ KEY_RELEASE);	165	key_released(x ^ KEY_RELEASE);
175	else	166	else
176	key_pressed(x);	167	key_pressed(x);
177	}	168	}
178	}	169	}
179	}	170	}
180		171
181	/** @}	172	/** @}
182	*/	173	*/
183		174

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(root)/trunk/kernel/genarch/src/kbd/z8530.c – Rev 1896 → 1909