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 <irq.h>
#include <arch/interrupt.h>
#include <arch/drivers/kbd.h>
#include <arch/drivers/fhc.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);
        }
    }
}
 
irq_ownership_t z8530_claim(void)
{
    return (z8530_read_a(RR0) & RR0_RCA);
}
 
void z8530_irq_handler(irq_t *irq, void *arg, ...)
{
    /*
     * So far, we know we got this interrupt through the FHC.
     * Since we don't have enough information about the FHC and
     * because the interrupt looks like level sensitive,
     * we cannot handle it by scheduling one of the level
     * interrupt traps. Process the interrupt directly.
     */
    if (z8530_belongs_to_kernel)
        z8530_interrupt();
    else
        ipc_irq_send_notif(0);
    fhc_clear_interrupt(central_fhc, irq->inr);
}
 
/** @}
 */
 

Rev 1909	Rev 1919
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/z8530.h>	41	#include <arch/drivers/z8530.h>
-		42	#include <irq.h>
42	#include <arch/interrupt.h>	43	#include <arch/interrupt.h>
43	#include <arch/drivers/kbd.h>	44	#include <arch/drivers/kbd.h>
-		45	#include <arch/drivers/fhc.h>
44	#include <cpu.h>	46	#include <cpu.h>
45	#include <arch/asm.h>	47	#include <arch/asm.h>
46	#include <arch.h>	48	#include <arch.h>
47	#include <typedefs.h>	49	#include <typedefs.h>
48	#include <console/chardev.h>	50	#include <console/chardev.h>
49	#include <console/console.h>	51	#include <console/console.h>
50	#include <interrupt.h>	52	#include <interrupt.h>
51	#include <sysinfo/sysinfo.h>	53	#include <sysinfo/sysinfo.h>
52	#include <print.h>	54	#include <print.h>
53		55
54	/*	56	/*
55	* These codes read from z8530 data register are silently ignored.	57	* These codes read from z8530 data register are silently ignored.
56	*/	58	*/
57	#define IGNORE_CODE 0x7f /* all keys up */	59	#define IGNORE_CODE 0x7f /* all keys up */
58		60
59	bool z8530_belongs_to_kernel = true;	61	bool z8530_belongs_to_kernel = true;
60		62
61	static void z8530_suspend(chardev_t *);	63	static void z8530_suspend(chardev_t *);
62	static void z8530_resume(chardev_t *);	64	static void z8530_resume(chardev_t *);
63		65
64	static chardev_operations_t ops = {	66	static chardev_operations_t ops = {
65	.suspend = z8530_suspend,	67	.suspend = z8530_suspend,
66	.resume = z8530_resume,	68	.resume = z8530_resume,
67	.read = z8530_key_read	69	.read = z8530_key_read
68	};	70	};
69		71
70	void z8530_wait(void);	72	void z8530_wait(void);
71		73
72	/** Initialize keyboard and service interrupts using kernel routine */	74	/** Initialize keyboard and service interrupts using kernel routine */
73	void z8530_grab(void)	75	void z8530_grab(void)
74	{	76	{
75	z8530_belongs_to_kernel = true;	77	z8530_belongs_to_kernel = true;
76	}	78	}
77		79
78	/** Resume the former interrupt vector */	80	/** Resume the former interrupt vector */
79	void z8530_release(void)	81	void z8530_release(void)
80	{	82	{
81	z8530_belongs_to_kernel = false;	83	z8530_belongs_to_kernel = false;
82	}	84	}
83		85
84	/** Initialize z8530. */	86	/** Initialize z8530. */
85	void z8530_init(void)	87	void z8530_init(void)
86	{	88	{
87	chardev_initialize("z8530_kbd", &kbrd, &ops);	89	chardev_initialize("z8530_kbd", &kbrd, &ops);
88	stdin = &kbrd;	90	stdin = &kbrd;
89		91
90	sysinfo_set_item_val("kbd", NULL, true);	92	sysinfo_set_item_val("kbd", NULL, true);
91	sysinfo_set_item_val("kbd.irq", NULL, 0);	93	sysinfo_set_item_val("kbd.irq", NULL, 0);
92	sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address);	94	sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address);
93		95
94	(void) z8530_read_a(RR8);	96	(void) z8530_read_a(RR8);
95		97
96	/*	98	/*
97	* Clear any pending TX interrupts or we never manage	99	* Clear any pending TX interrupts or we never manage
98	* to set FHC UART interrupt state to idle.	100	* to set FHC UART interrupt state to idle.
99	*/	101	*/
100	z8530_write_a(WR0, WR0_TX_IP_RST);	102	z8530_write_a(WR0, WR0_TX_IP_RST);
101		103
102	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */	104	z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */
103		105
104	/* 8 bits per character and enable receiver */	106	/* 8 bits per character and enable receiver */
105	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);	107	z8530_write_a(WR3, WR3_RX8BITSCH \| WR3_RX_ENABLE);
106		108
107	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */	109	z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */
108	}	110	}
109		111
110	/** Process z8530 interrupt.	112	/** Process z8530 interrupt.
111	*	113	*
112	* @param n Interrupt vector.	114	* @param n Interrupt vector.
113	* @param istate Interrupted state.	115	* @param istate Interrupted state.
114	*/	116	*/
115	void z8530_interrupt(void)	117	void z8530_interrupt(void)
116	{	118	{
117	z8530_poll();	119	z8530_poll();
118	}	120	}
119		121
120	/** Wait until the controller reads its data. */	122	/** Wait until the controller reads its data. */
121	void z8530_wait(void) {	123	void z8530_wait(void) {
122	}	124	}
123		125
124	/* Called from getc(). */	126	/* Called from getc(). */
125	void z8530_resume(chardev_t *d)	127	void z8530_resume(chardev_t *d)
126	{	128	{
127	}	129	}
128		130
129	/* Called from getc(). */	131	/* Called from getc(). */
130	void z8530_suspend(chardev_t *d)	132	void z8530_suspend(chardev_t *d)
131	{	133	{
132	}	134	}
133		135
134	char z8530_key_read(chardev_t *d)	136	char z8530_key_read(chardev_t *d)
135	{	137	{
136	char ch;	138	char ch;
137		139
138	while(!(ch = active_read_buff_read())) {	140	while(!(ch = active_read_buff_read())) {
139	uint8_t x;	141	uint8_t x;
140	while (!(z8530_read_a(RR0) & RR0_RCA))	142	while (!(z8530_read_a(RR0) & RR0_RCA))
141	;	143	;
142	x = z8530_read_a(RR8);	144	x = z8530_read_a(RR8);
143	if (x != IGNORE_CODE) {	145	if (x != IGNORE_CODE) {
144	if (x & KEY_RELEASE)	146	if (x & KEY_RELEASE)
145	key_released(x ^ KEY_RELEASE);	147	key_released(x ^ KEY_RELEASE);
146	else	148	else
147	active_read_key_pressed(x);	149	active_read_key_pressed(x);
148	}	150	}
149	}	151	}
150	return ch;	152	return ch;
151	}	153	}
152		154
153	/** Poll for key press and release events.	155	/** Poll for key press and release events.
154	*	156	*
155	* This function can be used to implement keyboard polling.	157	* This function can be used to implement keyboard polling.
156	*/	158	*/
157	void z8530_poll(void)	159	void z8530_poll(void)
158	{	160	{
159	uint8_t x;	161	uint8_t x;
160		162
161	while (z8530_read_a(RR0) & RR0_RCA) {	163	while (z8530_read_a(RR0) & RR0_RCA) {
162	x = z8530_read_a(RR8);	164	x = z8530_read_a(RR8);
163	if (x != IGNORE_CODE) {	165	if (x != IGNORE_CODE) {
164	if (x & KEY_RELEASE)	166	if (x & KEY_RELEASE)
165	key_released(x ^ KEY_RELEASE);	167	key_released(x ^ KEY_RELEASE);
166	else	168	else
167	key_pressed(x);	169	key_pressed(x);
168	}	170	}
169	}	171	}
170	}	172	}
-		173
-		174	irq_ownership_t z8530_claim(void)
-		175	{
-		176	return (z8530_read_a(RR0) & RR0_RCA);
-		177	}
-		178
-		179	void z8530_irq_handler(irq_t irq, void arg, ...)
-		180	{
-		181	/*
-		182	* So far, we know we got this interrupt through the FHC.
-		183	* Since we don't have enough information about the FHC and
-		184	* because the interrupt looks like level sensitive,
-		185	* we cannot handle it by scheduling one of the level
-		186	* interrupt traps. Process the interrupt directly.
-		187	*/
-		188	if (z8530_belongs_to_kernel)
-		189	z8530_interrupt();
-		190	else
-		191	ipc_irq_send_notif(0);
-		192	fhc_clear_interrupt(central_fhc, irq->inr);
-		193	}
171		194
172	/** @}	195	/** @}
173	*/	196	*/
174		197

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(root)/trunk/kernel/genarch/src/kbd/z8530.c – Rev 1909 → 1919