WebSVN – HelenOS – Diff – /trunk/kernel/arch/mips32/src/drivers/msim.c


/*
 * Copyright (c) 2005 Ondrej Palkovsky
 * 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 mips32 
 * @{
 */
/** @file
 */
 
#include <interrupt.h>
#include <console/chardev.h>
#include <arch/drivers/msim.h>
#include <arch/cp0.h>
#include <console/console.h>
#include <ddi/irq.h>
#include <sysinfo/sysinfo.h>
 
/** Address of devices. */
#define MSIM_VIDEORAM       0xB0000000
#define MSIM_KBD_ADDRESS    0xB0000000
#define MSIM_KBD_IRQ        2
 
static chardev_t console;
static irq_t msim_irq;
 
static void msim_write(chardev_t *dev, const char ch);
static void msim_enable(chardev_t *dev);
static void msim_disable(chardev_t *dev);
static char msim_do_read(chardev_t *dev);
 
static chardev_operations_t msim_ops = {
    .resume = msim_enable,
    .suspend = msim_disable,
    .write = msim_write,
    .read = msim_do_read,
};
 
/** Putchar that works with MSIM & gxemul */
void msim_write(chardev_t *dev, const char ch)
{
    *((char *) MSIM_VIDEORAM) = ch;
}
 
/* Called from getc(). */
void msim_enable(chardev_t *dev)
{
    cp0_unmask_int(MSIM_KBD_IRQ);
}
 
/* Called from getc(). */
void msim_disable(chardev_t *dev)
{
    cp0_mask_int(MSIM_KBD_IRQ);
}
 
#include <print.h>
/** Read character using polling, assume interrupts disabled */
static char msim_do_read(chardev_t *dev)
{
    char ch;
 
    while (1) {
        ch = *((volatile char *) MSIM_KBD_ADDRESS);
        if (ch) {
            if (ch == '\r')
                return '\n';
            if (ch == 0x7f)
                return '\b';
            return ch;
        }
    }
}
 
/** Process keyboard interrupt. */
static void msim_irq_handler(irq_t *irq, void *arg, ...)
{
    if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox))
        ipc_irq_send_notif(irq);
    else {
        char ch = 0;
       
            ch = *((char *) MSIM_KBD_ADDRESS);
            if (ch =='\r')
                ch = '\n';
            if (ch == 0x7f)
                ch = '\b';
            chardev_push_character(&console, ch);
    }
}
 
static irq_ownership_t msim_claim(void)
{
    return IRQ_ACCEPT;
}
 
void msim_kbd_grab(void)
{
    ipl_t ipl = interrupts_disable();
    spinlock_lock(&msim_irq.lock);
    msim_irq.notif_cfg.notify = false;
    spinlock_unlock(&msim_irq.lock);
    interrupts_restore(ipl);
}
 
void msim_kbd_release(void)
{
    ipl_t ipl = interrupts_disable();
    spinlock_lock(&msim_irq.lock);
    if (msim_irq.notif_cfg.answerbox)
        msim_irq.notif_cfg.notify = true;
    spinlock_unlock(&msim_irq.lock);
    interrupts_restore(ipl);
}
 
 
/* Return console object representing msim console */
void msim_console(devno_t devno)
{
    chardev_initialize("msim_console", &console, &msim_ops);
    stdin = &console;
    stdout = &console;
   
    irq_initialize(&msim_irq);
    msim_irq.devno = devno;
    msim_irq.inr = MSIM_KBD_IRQ;
    msim_irq.claim = msim_claim;
    msim_irq.handler = msim_irq_handler;
    irq_register(&msim_irq);
   
    cp0_unmask_int(MSIM_KBD_IRQ);
   
    sysinfo_set_item_val("kbd", NULL, true);
    sysinfo_set_item_val("kbd.devno", NULL, devno);
    sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ);
    sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS);
}
 
/** @}
 */
 

Rev 1944	Rev 2071
1	/*	1	/*
2	* Copyright (C) 2005 Ondrej Palkovsky	2	* Copyright (c) 2005 Ondrej Palkovsky
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 mips32	29	/** @addtogroup mips32
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <interrupt.h>	35	#include <interrupt.h>
36	#include <console/chardev.h>	36	#include <console/chardev.h>
37	#include <arch/drivers/msim.h>	37	#include <arch/drivers/msim.h>
38	#include <arch/cp0.h>	38	#include <arch/cp0.h>
39	#include <console/console.h>	39	#include <console/console.h>
40	#include <ddi/irq.h>	40	#include <ddi/irq.h>
41	#include <sysinfo/sysinfo.h>	41	#include <sysinfo/sysinfo.h>
42		42
43	/** Address of devices. */	43	/** Address of devices. */
44	#define MSIM_VIDEORAM 0xB0000000	44	#define MSIM_VIDEORAM 0xB0000000
45	#define MSIM_KBD_ADDRESS 0xB0000000	45	#define MSIM_KBD_ADDRESS 0xB0000000
46	#define MSIM_KBD_IRQ 2	46	#define MSIM_KBD_IRQ 2
47		47
48	static chardev_t console;	48	static chardev_t console;
49	static irq_t msim_irq;	49	static irq_t msim_irq;
50		50
51	static void msim_write(chardev_t *dev, const char ch);	51	static void msim_write(chardev_t *dev, const char ch);
52	static void msim_enable(chardev_t *dev);	52	static void msim_enable(chardev_t *dev);
53	static void msim_disable(chardev_t *dev);	53	static void msim_disable(chardev_t *dev);
54	static char msim_do_read(chardev_t *dev);	54	static char msim_do_read(chardev_t *dev);
55		55
56	static chardev_operations_t msim_ops = {	56	static chardev_operations_t msim_ops = {
57	.resume = msim_enable,	57	.resume = msim_enable,
58	.suspend = msim_disable,	58	.suspend = msim_disable,
59	.write = msim_write,	59	.write = msim_write,
60	.read = msim_do_read,	60	.read = msim_do_read,
61	};	61	};
62		62
63	/** Putchar that works with MSIM & gxemul */	63	/** Putchar that works with MSIM & gxemul */
64	void msim_write(chardev_t *dev, const char ch)	64	void msim_write(chardev_t *dev, const char ch)
65	{	65	{
66	((char ) MSIM_VIDEORAM) = ch;	66	((char ) MSIM_VIDEORAM) = ch;
67	}	67	}
68		68
69	/* Called from getc(). */	69	/* Called from getc(). */
70	void msim_enable(chardev_t *dev)	70	void msim_enable(chardev_t *dev)
71	{	71	{
72	cp0_unmask_int(MSIM_KBD_IRQ);	72	cp0_unmask_int(MSIM_KBD_IRQ);
73	}	73	}
74		74
75	/* Called from getc(). */	75	/* Called from getc(). */
76	void msim_disable(chardev_t *dev)	76	void msim_disable(chardev_t *dev)
77	{	77	{
78	cp0_mask_int(MSIM_KBD_IRQ);	78	cp0_mask_int(MSIM_KBD_IRQ);
79	}	79	}
80		80
81	#include <print.h>	81	#include <print.h>
82	/** Read character using polling, assume interrupts disabled */	82	/** Read character using polling, assume interrupts disabled */
83	static char msim_do_read(chardev_t *dev)	83	static char msim_do_read(chardev_t *dev)
84	{	84	{
85	char ch;	85	char ch;
86		86
87	while (1) {	87	while (1) {
88	ch = ((volatile char ) MSIM_KBD_ADDRESS);	88	ch = ((volatile char ) MSIM_KBD_ADDRESS);
89	if (ch) {	89	if (ch) {
90	if (ch == '\r')	90	if (ch == '\r')
91	return '\n';	91	return '\n';
92	if (ch == 0x7f)	92	if (ch == 0x7f)
93	return '\b';	93	return '\b';
94	return ch;	94	return ch;
95	}	95	}
96	}	96	}
97	}	97	}
98		98
99	/** Process keyboard interrupt. */	99	/** Process keyboard interrupt. */
100	static void msim_irq_handler(irq_t irq, void arg, ...)	100	static void msim_irq_handler(irq_t irq, void arg, ...)
101	{	101	{
102	if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox))	102	if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox))
103	ipc_irq_send_notif(irq);	103	ipc_irq_send_notif(irq);
104	else {	104	else {
105	char ch = 0;	105	char ch = 0;
106		106
107	ch = ((char ) MSIM_KBD_ADDRESS);	107	ch = ((char ) MSIM_KBD_ADDRESS);
108	if (ch =='\r')	108	if (ch =='\r')
109	ch = '\n';	109	ch = '\n';
110	if (ch == 0x7f)	110	if (ch == 0x7f)
111	ch = '\b';	111	ch = '\b';
112	chardev_push_character(&console, ch);	112	chardev_push_character(&console, ch);
113	}	113	}
114	}	114	}
115		115
116	static irq_ownership_t msim_claim(void)	116	static irq_ownership_t msim_claim(void)
117	{	117	{
118	return IRQ_ACCEPT;	118	return IRQ_ACCEPT;
119	}	119	}
120		120
121	void msim_kbd_grab(void)	121	void msim_kbd_grab(void)
122	{	122	{
123	ipl_t ipl = interrupts_disable();	123	ipl_t ipl = interrupts_disable();
124	spinlock_lock(&msim_irq.lock);	124	spinlock_lock(&msim_irq.lock);
125	msim_irq.notif_cfg.notify = false;	125	msim_irq.notif_cfg.notify = false;
126	spinlock_unlock(&msim_irq.lock);	126	spinlock_unlock(&msim_irq.lock);
127	interrupts_restore(ipl);	127	interrupts_restore(ipl);
128	}	128	}
129		129
130	void msim_kbd_release(void)	130	void msim_kbd_release(void)
131	{	131	{
132	ipl_t ipl = interrupts_disable();	132	ipl_t ipl = interrupts_disable();
133	spinlock_lock(&msim_irq.lock);	133	spinlock_lock(&msim_irq.lock);
134	if (msim_irq.notif_cfg.answerbox)	134	if (msim_irq.notif_cfg.answerbox)
135	msim_irq.notif_cfg.notify = true;	135	msim_irq.notif_cfg.notify = true;
136	spinlock_unlock(&msim_irq.lock);	136	spinlock_unlock(&msim_irq.lock);
137	interrupts_restore(ipl);	137	interrupts_restore(ipl);
138	}	138	}
139		139
140		140
141	/* Return console object representing msim console */	141	/* Return console object representing msim console */
142	void msim_console(devno_t devno)	142	void msim_console(devno_t devno)
143	{	143	{
144	chardev_initialize("msim_console", &console, &msim_ops);	144	chardev_initialize("msim_console", &console, &msim_ops);
145	stdin = &console;	145	stdin = &console;
146	stdout = &console;	146	stdout = &console;
147		147
148	irq_initialize(&msim_irq);	148	irq_initialize(&msim_irq);
149	msim_irq.devno = devno;	149	msim_irq.devno = devno;
150	msim_irq.inr = MSIM_KBD_IRQ;	150	msim_irq.inr = MSIM_KBD_IRQ;
151	msim_irq.claim = msim_claim;	151	msim_irq.claim = msim_claim;
152	msim_irq.handler = msim_irq_handler;	152	msim_irq.handler = msim_irq_handler;
153	irq_register(&msim_irq);	153	irq_register(&msim_irq);
154		154
155	cp0_unmask_int(MSIM_KBD_IRQ);	155	cp0_unmask_int(MSIM_KBD_IRQ);
156		156
157	sysinfo_set_item_val("kbd", NULL, true);	157	sysinfo_set_item_val("kbd", NULL, true);
158	sysinfo_set_item_val("kbd.devno", NULL, devno);	158	sysinfo_set_item_val("kbd.devno", NULL, devno);
159	sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ);	159	sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ);
160	sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS);	160	sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS);
161	}	161	}
162		162
163	/** @}	163	/** @}
164	*/	164	*/
165		165

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(root)/trunk/kernel/arch/mips32/src/drivers/msim.c – Rev 1944 → 2071