WebSVN – HelenOS – Diff – /branches/sparc/kernel/genarch/src/kbd/ns16550.c


/*
 * Copyright (c) 2001-2006 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   NS 16550 serial port / keyboard driver.
 */
 
#include <genarch/kbd/ns16550.h>
#include <genarch/kbd/key.h>
#include <genarch/kbd/scanc.h>
#include <genarch/kbd/scanc_sun.h>
#ifndef ia64
#include <arch/drivers/kbd.h>
#include <arch/drivers/ns16550.h>
#endif
#include <ddi/irq.h>
#include <ipc/irq.h>
#include <cpu.h>
#include <arch/asm.h>
#include <arch.h>
#include <console/chardev.h>
#include <console/console.h>
#include <interrupt.h>
#include <arch/interrupt.h>
#include <sysinfo/sysinfo.h>
#include <synch/spinlock.h>
 
#define LSR_DATA_READY  0x01
 
/** Structure representing the ns16550. */
static ns16550_t ns16550;
 
/** Structure for ns16550's IRQ. */
static irq_t ns16550_irq;
 
/*
 * These codes read from ns16550 data register are silently ignored.
 */
#define IGNORE_CODE 0x7f        /* all keys up */
 
static void ns16550_suspend(chardev_t *);
static void ns16550_resume(chardev_t *);
 
static chardev_operations_t ops = {
    .suspend = ns16550_suspend,
    .resume = ns16550_resume,
    .read = ns16550_key_read
};
 
void ns16550_interrupt(void);
 
/** Initialize keyboard and service interrupts using kernel routine */
void ns16550_grab(void)
{
    ipl_t ipl = interrupts_disable();
 
    ns16550_ier_write(&ns16550, IER_ERBFI);     /* enable receiver interrupt */
   
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY)
        (void) ns16550_rbr_read(&ns16550);
 
    spinlock_lock(&ns16550_irq.lock);
    ns16550_irq.notif_cfg.notify = false;
    spinlock_unlock(&ns16550_irq.lock);
    interrupts_restore(ipl);
}
 
/** Resume the former interrupt vector */
void ns16550_release(void)
{
    ipl_t ipl = interrupts_disable();
    spinlock_lock(&ns16550_irq.lock);
    if (ns16550_irq.notif_cfg.answerbox)
        ns16550_irq.notif_cfg.notify = true;
    spinlock_unlock(&ns16550_irq.lock);
    interrupts_restore(ipl);
}
 
/** Initialize ns16550.
 *
 * @param devno Device number.
 * @param inr Interrupt number.
 * @param vaddr Virtual address of device's registers.
 */
void ns16550_init(devno_t devno, inr_t inr, ioport_t port)
{
    chardev_initialize("ns16550_kbd", &kbrd, &ops);
    stdin = &kbrd;
   
    ns16550.devno = devno;
    ns16550.io_port = port;
   
    irq_initialize(&ns16550_irq);
    ns16550_irq.devno = devno;
    ns16550_irq.inr = inr;
    ns16550_irq.claim = ns16550_claim;
    ns16550_irq.handler = ns16550_irq_handler;
    irq_register(&ns16550_irq);
   
    sysinfo_set_item_val("kbd", NULL, true);
#ifndef ia64
    sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
#endif
    sysinfo_set_item_val("kbd.devno", NULL, devno);
    sysinfo_set_item_val("kbd.inr", NULL, inr);
    sysinfo_set_item_val("kbd.address.virtual", NULL, port);
 
#ifdef ia64
        uint8_t c;
        c = ns16550_lcr_read(&ns16550);
        ns16550_lcr_write(&ns16550, 0x80 | c);
        ns16550_rbr_write(&ns16550, 0x0c);
        ns16550_ier_write(&ns16550, 0x00);
        ns16550_lcr_write(&ns16550, c);
#endif
   
    ns16550_grab();
}
 
/** Process ns16550 interrupt. */
void ns16550_interrupt(void)
{
    /* TODO
     *
     * ns16550 works in the polled mode so far.
     */
}
 
/* Called from getc(). */
void ns16550_resume(chardev_t *d)
{
}
 
/* Called from getc(). */
void ns16550_suspend(chardev_t *d)
{
}
 
 
char ns16550_key_read(chardev_t *d)
{
    char ch;   
 
    while(!(ch = active_read_buff_read())) {
        uint8_t x;
        while (!(ns16550_lsr_read(&ns16550) & LSR_DATA_READY))
            ;
        x = ns16550_rbr_read(&ns16550);
#ifndef ia64
        if (x != IGNORE_CODE) {
            if (x & KEY_RELEASE)
                key_released(x ^ KEY_RELEASE);
            else
                active_read_key_pressed(x);
        }
#else
        extern chardev_t kbrd;
        if(x != 0x0d) {
            if(x == 0x7f)
                x = '\b';
             chardev_push_character(&kbrd, x);
        }    
#endif      
 
    }
    return ch;
}
 
/** Poll for key press and release events.
 *
 * This function can be used to implement keyboard polling.
 */
void ns16550_poll(void)
{
    ipl_t ipl;
 
    ipl = interrupts_disable();
    spinlock_lock(&ns16550_irq.lock);
 
    if (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
        if (ns16550_irq.notif_cfg.notify && ns16550_irq.notif_cfg.answerbox) {
            /*
             * Send IPC notification.
             */
            ipc_irq_send_notif(&ns16550_irq);
            spinlock_unlock(&ns16550_irq.lock);
            interrupts_restore(ipl);
            return;
        }
    }
 
    spinlock_unlock(&ns16550_irq.lock);
    interrupts_restore(ipl);
 
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
        uint8_t x;
       
        x = ns16550_rbr_read(&ns16550);
#ifndef ia64
        if (x != IGNORE_CODE) {
            if (x & KEY_RELEASE)
                key_released(x ^ KEY_RELEASE);
            else
                key_pressed(x);
        }
#else
        extern chardev_t kbrd;
        if(x != 0x0d) {
            if (x == 0x7f)
                x = '\b';
            chardev_push_character(&kbrd, x);
        }    
#endif      
 
    }
}
 
irq_ownership_t ns16550_claim(void)
{
    return (ns16550_lsr_read(&ns16550) & LSR_DATA_READY);
}
 
void ns16550_irq_handler(irq_t *irq, void *arg, ...)
{
    panic("Not yet implemented, ns16550 works in polled mode.\n");
}
 
/** @}
 */
 

Rev 3343	Rev 3593
1	/*	1	/*
2	* Copyright (c) 2001-2006 Jakub Jermar	2	* Copyright (c) 2001-2006 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 NS 16550 serial port / keyboard driver.	34	* @brief NS 16550 serial port / keyboard driver.
35	*/	35	*/
36		36
37	#include <genarch/kbd/ns16550.h>	37	#include <genarch/kbd/ns16550.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	#ifndef ia64
41	#include <arch/drivers/kbd.h>	42	#include <arch/drivers/kbd.h>
42	#include <arch/drivers/ns16550.h>	43	#include <arch/drivers/ns16550.h>
-		44	#endif
43	#include <ddi/irq.h>	45	#include <ddi/irq.h>
44	#include <ipc/irq.h>	46	#include <ipc/irq.h>
45	#include <cpu.h>	47	#include <cpu.h>
46	#include <arch/asm.h>	48	#include <arch/asm.h>
47	#include <arch.h>	49	#include <arch.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 <arch/interrupt.h>	53	#include <arch/interrupt.h>
52	#include <sysinfo/sysinfo.h>	54	#include <sysinfo/sysinfo.h>
53	#include <synch/spinlock.h>	55	#include <synch/spinlock.h>
54		56
55	#define LSR_DATA_READY 0x01	57	#define LSR_DATA_READY 0x01
56		58
57	/** Structure representing the ns16550. */	59	/** Structure representing the ns16550. */
58	static ns16550_t ns16550;	60	static ns16550_t ns16550;
59		61
60	/** Structure for ns16550's IRQ. */	62	/** Structure for ns16550's IRQ. */
61	static irq_t ns16550_irq;	63	static irq_t ns16550_irq;
62		64
63	/*	65	/*
64	* These codes read from ns16550 data register are silently ignored.	66	* These codes read from ns16550 data register are silently ignored.
65	*/	67	*/
66	#define IGNORE_CODE 0x7f /* all keys up */	68	#define IGNORE_CODE 0x7f /* all keys up */
67		69
68	static void ns16550_suspend(chardev_t *);	70	static void ns16550_suspend(chardev_t *);
69	static void ns16550_resume(chardev_t *);	71	static void ns16550_resume(chardev_t *);
70		72
71	static chardev_operations_t ops = {	73	static chardev_operations_t ops = {
72	.suspend = ns16550_suspend,	74	.suspend = ns16550_suspend,
73	.resume = ns16550_resume,	75	.resume = ns16550_resume,
74	.read = ns16550_key_read	76	.read = ns16550_key_read
75	};	77	};
76		78
77	void ns16550_interrupt(void);	79	void ns16550_interrupt(void);
78		80
79	/** Initialize keyboard and service interrupts using kernel routine */	81	/** Initialize keyboard and service interrupts using kernel routine */
80	void ns16550_grab(void)	82	void ns16550_grab(void)
81	{	83	{
82	ipl_t ipl = interrupts_disable();	84	ipl_t ipl = interrupts_disable();
83		85
84	ns16550_ier_write(&ns16550, IER_ERBFI); /* enable receiver interrupt */	86	ns16550_ier_write(&ns16550, IER_ERBFI); /* enable receiver interrupt */
85		87
86	while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY)	88	while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY)
87	(void) ns16550_rbr_read(&ns16550);	89	(void) ns16550_rbr_read(&ns16550);
88		90
89	spinlock_lock(&ns16550_irq.lock);	91	spinlock_lock(&ns16550_irq.lock);
90	ns16550_irq.notif_cfg.notify = false;	92	ns16550_irq.notif_cfg.notify = false;
91	spinlock_unlock(&ns16550_irq.lock);	93	spinlock_unlock(&ns16550_irq.lock);
92	interrupts_restore(ipl);	94	interrupts_restore(ipl);
93	}	95	}
94		96
95	/** Resume the former interrupt vector */	97	/** Resume the former interrupt vector */
96	void ns16550_release(void)	98	void ns16550_release(void)
97	{	99	{
98	ipl_t ipl = interrupts_disable();	100	ipl_t ipl = interrupts_disable();
99	spinlock_lock(&ns16550_irq.lock);	101	spinlock_lock(&ns16550_irq.lock);
100	if (ns16550_irq.notif_cfg.answerbox)	102	if (ns16550_irq.notif_cfg.answerbox)
101	ns16550_irq.notif_cfg.notify = true;	103	ns16550_irq.notif_cfg.notify = true;
102	spinlock_unlock(&ns16550_irq.lock);	104	spinlock_unlock(&ns16550_irq.lock);
103	interrupts_restore(ipl);	105	interrupts_restore(ipl);
104	}	106	}
105		107
106	/** Initialize ns16550.	108	/** Initialize ns16550.
107	*	109	*
108	* @param devno Device number.	110	* @param devno Device number.
109	* @param inr Interrupt number.	111	* @param inr Interrupt number.
110	* @param vaddr Virtual address of device's registers.	112	* @param vaddr Virtual address of device's registers.
111	*/	113	*/
112	void ns16550_init(devno_t devno, inr_t inr, uintptr_t vaddr)	114	void ns16550_init(devno_t devno, inr_t inr, ioport_t port)
113	{	115	{
114	chardev_initialize("ns16550_kbd", &kbrd, &ops);	116	chardev_initialize("ns16550_kbd", &kbrd, &ops);
115	stdin = &kbrd;	117	stdin = &kbrd;
116		118
117	ns16550.devno = devno;	119	ns16550.devno = devno;
118	ns16550.reg = (uint8_t *) vaddr;	120	ns16550.io_port = port;
119		121
120	irq_initialize(&ns16550_irq);	122	irq_initialize(&ns16550_irq);
121	ns16550_irq.devno = devno;	123	ns16550_irq.devno = devno;
122	ns16550_irq.inr = inr;	124	ns16550_irq.inr = inr;
123	ns16550_irq.claim = ns16550_claim;	125	ns16550_irq.claim = ns16550_claim;
124	ns16550_irq.handler = ns16550_irq_handler;	126	ns16550_irq.handler = ns16550_irq_handler;
125	irq_register(&ns16550_irq);	127	irq_register(&ns16550_irq);
126		128
127	sysinfo_set_item_val("kbd", NULL, true);	129	sysinfo_set_item_val("kbd", NULL, true);
-		130	#ifndef ia64
128	sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);	131	sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
-		132	#endif
129	sysinfo_set_item_val("kbd.devno", NULL, devno);	133	sysinfo_set_item_val("kbd.devno", NULL, devno);
130	sysinfo_set_item_val("kbd.inr", NULL, inr);	134	sysinfo_set_item_val("kbd.inr", NULL, inr);
131	sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr);	135	sysinfo_set_item_val("kbd.address.virtual", NULL, port);
-		136
-		137	#ifdef ia64
-		138	uint8_t c;
-		139	c = ns16550_lcr_read(&ns16550);
-		140	ns16550_lcr_write(&ns16550, 0x80 \| c);
-		141	ns16550_rbr_write(&ns16550, 0x0c);
-		142	ns16550_ier_write(&ns16550, 0x00);
-		143	ns16550_lcr_write(&ns16550, c);
-		144	#endif
132		145
133	ns16550_grab();	146	ns16550_grab();
134	}	147	}
135		148
136	/** Process ns16550 interrupt. */	149	/** Process ns16550 interrupt. */
137	void ns16550_interrupt(void)	150	void ns16550_interrupt(void)
138	{	151	{
139	/* TODO	152	/* TODO
140	*	153	*
141	* ns16550 works in the polled mode so far.	154	* ns16550 works in the polled mode so far.
142	*/	155	*/
143	}	156	}
144		157
145	/* Called from getc(). */	158	/* Called from getc(). */
146	void ns16550_resume(chardev_t *d)	159	void ns16550_resume(chardev_t *d)
147	{	160	{
148	}	161	}
149		162
150	/* Called from getc(). */	163	/* Called from getc(). */
151	void ns16550_suspend(chardev_t *d)	164	void ns16550_suspend(chardev_t *d)
152	{	165	{
153	}	166	}
154		167
-		168
155	char ns16550_key_read(chardev_t *d)	169	char ns16550_key_read(chardev_t *d)
156	{	170	{
157	char ch;	171	char ch;
158		172
159	while(!(ch = active_read_buff_read())) {	173	while(!(ch = active_read_buff_read())) {
160	uint8_t x;	174	uint8_t x;
161	while (!(ns16550_lsr_read(&ns16550) & LSR_DATA_READY))	175	while (!(ns16550_lsr_read(&ns16550) & LSR_DATA_READY))
162	;	176	;
163	x = ns16550_rbr_read(&ns16550);	177	x = ns16550_rbr_read(&ns16550);
-		178	#ifndef ia64
164	if (x != IGNORE_CODE) {	179	if (x != IGNORE_CODE) {
165	if (x & KEY_RELEASE)	180	if (x & KEY_RELEASE)
166	key_released(x ^ KEY_RELEASE);	181	key_released(x ^ KEY_RELEASE);
167	else	182	else
168	active_read_key_pressed(x);	183	active_read_key_pressed(x);
169	}	184	}
-		185	#else
-		186	extern chardev_t kbrd;
-		187	if(x != 0x0d) {
-		188	if(x == 0x7f)
-		189	x = '\b';
-		190	chardev_push_character(&kbrd, x);
-		191	}
-		192	#endif
-		193
170	}	194	}
171	return ch;	195	return ch;
172	}	196	}
173		197
174	/** Poll for key press and release events.	198	/** Poll for key press and release events.
175	*	199	*
176	* This function can be used to implement keyboard polling.	200	* This function can be used to implement keyboard polling.
177	*/	201	*/
178	void ns16550_poll(void)	202	void ns16550_poll(void)
179	{	203	{
180	ipl_t ipl;	204	ipl_t ipl;
181		205
182	ipl = interrupts_disable();	206	ipl = interrupts_disable();
183	spinlock_lock(&ns16550_irq.lock);	207	spinlock_lock(&ns16550_irq.lock);
184		208
185	if (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {	209	if (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
186	if (ns16550_irq.notif_cfg.notify && ns16550_irq.notif_cfg.answerbox) {	210	if (ns16550_irq.notif_cfg.notify && ns16550_irq.notif_cfg.answerbox) {
187	/*	211	/*
188	* Send IPC notification.	212	* Send IPC notification.
189	*/	213	*/
190	ipc_irq_send_notif(&ns16550_irq);	214	ipc_irq_send_notif(&ns16550_irq);
191	spinlock_unlock(&ns16550_irq.lock);	215	spinlock_unlock(&ns16550_irq.lock);
192	interrupts_restore(ipl);	216	interrupts_restore(ipl);
193	return;	217	return;
194	}	218	}
195	}	219	}
196		220
197	spinlock_unlock(&ns16550_irq.lock);	221	spinlock_unlock(&ns16550_irq.lock);
198	interrupts_restore(ipl);	222	interrupts_restore(ipl);
199		223
200	while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {	224	while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
201	uint8_t x;	225	uint8_t x;
202		226
203	x = ns16550_rbr_read(&ns16550);	227	x = ns16550_rbr_read(&ns16550);
-		228	#ifndef ia64
204	if (x != IGNORE_CODE) {	229	if (x != IGNORE_CODE) {
205	if (x & KEY_RELEASE)	230	if (x & KEY_RELEASE)
206	key_released(x ^ KEY_RELEASE);	231	key_released(x ^ KEY_RELEASE);
207	else	232	else
208	key_pressed(x);	233	key_pressed(x);
209	}	234	}
-		235	#else
-		236	extern chardev_t kbrd;
-		237	if(x != 0x0d) {
-		238	if (x == 0x7f)
-		239	x = '\b';
-		240	chardev_push_character(&kbrd, x);
-		241	}
-		242	#endif
-		243
210	}	244	}
211	}	245	}
212		246
213	irq_ownership_t ns16550_claim(void)	247	irq_ownership_t ns16550_claim(void)
214	{	248	{
215	return (ns16550_lsr_read(&ns16550) & LSR_DATA_READY);	249	return (ns16550_lsr_read(&ns16550) & LSR_DATA_READY);
216	}	250	}
217		251
218	void ns16550_irq_handler(irq_t irq, void arg, ...)	252	void ns16550_irq_handler(irq_t irq, void arg, ...)
219	{	253	{
220	panic("Not yet implemented, ns16550 works in polled mode.\n");	254	panic("Not yet implemented, ns16550 works in polled mode.\n");
221	}	255	}
222		256
223	/** @}	257	/** @}
224	*/	258	*/
225		259

Subversion Repositories HelenOS

(root)/branches/sparc/kernel/genarch/src/kbd/ns16550.c – Rev 3343 → 3593