WebSVN – HelenOS – Diff – /branches/dynload/uspace/srv/kbd/port/ski.c


/*
 * Copyright (c) 2005 Jakub Jermar
 * Copyright (c) 2009 Jiri Svoboda
 * 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 kbd_port
 * @ingroup  kbd
 * @{
 */
/** @file
 * @brief   Ski console keyboard port driver.
 */
 
 
#include <stdlib.h>
#include <unistd.h>
#include <kbd.h>
#include <kbd_port.h>
#include <sys/types.h>
#include <thread.h>
#include <bool.h>
 
#define SKI_GETCHAR     21
 
#define POLL_INTERVAL       10000
 
static void *ski_thread_impl(void *arg);
static int32_t ski_getchar(void);
 
static volatile bool polling_disabled = false;
 
/** Initialize Ski port driver. */
int kbd_port_init(void)
{
    thread_id_t tid;
    int rc;
 
    rc = thread_create(ski_thread_impl, NULL, "kbd_poll", &tid);
    if (rc != 0) {
        return rc;
    }
 
    return 0;
}
 
void kbd_port_yield(void)
{
    polling_disabled = true;
}
 
void kbd_port_reclaim(void)
{
    polling_disabled = false;
}
 
/** Thread to poll Ski for keypresses. */
static void *ski_thread_impl(void *arg)
{
    int32_t c;
    (void) arg;
 
    while (1) {
        while (polling_disabled == false) {
            c = ski_getchar();
            if (c == 0)
                break;
            kbd_push_scancode(c);
        }
 
        usleep(POLL_INTERVAL);
    }
}
 
/** Ask Ski if a key was pressed.
 *
 * Use SSC (Simulator System Call) to get character from the debug console.
 * This call is non-blocking.
 *
 * @return ASCII code of pressed key or 0 if no key pressed.
 */
static int32_t ski_getchar(void)
{
    uint64_t ch;
   
    asm volatile (
        "mov r15 = %1\n"
        "break 0x80000;;\n" /* modifies r8 */
        "mov %0 = r8;;\n"      
 
        : "=r" (ch)
        : "i" (SKI_GETCHAR)
        : "r15", "r8"
    );
 
    return (int32_t) ch;
}
 
/** @}
 */
 

Rev 4346	Rev 4348
1	/*	1	/*
2	* Copyright (c) 2005 Jakub Jermar	2	* Copyright (c) 2005 Jakub Jermar
3	* Copyright (c) 2009 Jiri Svoboda	3	* Copyright (c) 2009 Jiri Svoboda
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	14	* documentation and/or other materials provided with the distribution.
15	* - The name of the author may not be used to endorse or promote products	15	* - The name of the author may not be used to endorse or promote products
16	* derived from this software without specific prior written permission.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	/** @addtogroup kbd_port	30	/** @addtogroup kbd_port
31	* @ingroup kbd	31	* @ingroup kbd
32	* @{	32	* @{
33	*/	33	*/
34	/** @file	34	/** @file
35	* @brief Ski console keyboard port driver.	35	* @brief Ski console keyboard port driver.
36	*/	36	*/
37		37
38		38
39	#include <stdlib.h>	39	#include <stdlib.h>
40	#include <unistd.h>	40	#include <unistd.h>
41	#include <kbd.h>	41	#include <kbd.h>
42	#include <kbd_port.h>	42	#include <kbd_port.h>
43	#include <sys/types.h>	43	#include <sys/types.h>
44	#include <thread.h>	44	#include <thread.h>
-		45	#include <bool.h>
45		46
46	#define SKI_GETCHAR 21	47	#define SKI_GETCHAR 21
47		48
48	#define POLL_INTERVAL 10000	49	#define POLL_INTERVAL 10000
49		50
50	static void ski_thread_impl(void arg);	51	static void ski_thread_impl(void arg);
51	static int32_t ski_getchar(void);	52	static int32_t ski_getchar(void);
52		53
-		54	static volatile bool polling_disabled = false;
-		55
53	/** Initialize Ski port driver. */	56	/** Initialize Ski port driver. */
54	int kbd_port_init(void)	57	int kbd_port_init(void)
55	{	58	{
56	thread_id_t tid;	59	thread_id_t tid;
57	int rc;	60	int rc;
58		61
59	rc = thread_create(ski_thread_impl, NULL, "kbd_poll", &tid);	62	rc = thread_create(ski_thread_impl, NULL, "kbd_poll", &tid);
60	if (rc != 0) {	63	if (rc != 0) {
61	return rc;	64	return rc;
62	}	65	}
63		66
64	return 0;	67	return 0;
65	}	68	}
66		69
-		70	void kbd_port_yield(void)
-		71	{
-		72	polling_disabled = true;
-		73	}
-		74
-		75	void kbd_port_reclaim(void)
-		76	{
-		77	polling_disabled = false;
-		78	}
-		79
67	/** Thread to poll Ski for keypresses. */	80	/** Thread to poll Ski for keypresses. */
68	static void ski_thread_impl(void arg)	81	static void ski_thread_impl(void arg)
69	{	82	{
70	int32_t c;	83	int32_t c;
71	(void) arg;	84	(void) arg;
72		85
73	while (1) {	86	while (1) {
74	while (1) {	87	while (polling_disabled == false) {
75	c = ski_getchar();	88	c = ski_getchar();
76	if (c == 0)	89	if (c == 0)
77	break;	90	break;
78	kbd_push_scancode(c);	91	kbd_push_scancode(c);
79	}	92	}
80		93
81	usleep(POLL_INTERVAL);	94	usleep(POLL_INTERVAL);
82	}	95	}
83	}	96	}
84		97
85	/** Ask Ski if a key was pressed.	98	/** Ask Ski if a key was pressed.
86	*	99	*
87	* Use SSC (Simulator System Call) to get character from the debug console.	100	* Use SSC (Simulator System Call) to get character from the debug console.
88	* This call is non-blocking.	101	* This call is non-blocking.
89	*	102	*
90	* @return ASCII code of pressed key or 0 if no key pressed.	103	* @return ASCII code of pressed key or 0 if no key pressed.
91	*/	104	*/
92	static int32_t ski_getchar(void)	105	static int32_t ski_getchar(void)
93	{	106	{
94	uint64_t ch;	107	uint64_t ch;
95		108
96	asm volatile (	109	asm volatile (
97	"mov r15 = %1\n"	110	"mov r15 = %1\n"
98	"break 0x80000;;\n" /* modifies r8 */	111	"break 0x80000;;\n" /* modifies r8 */
99	"mov %0 = r8;;\n"	112	"mov %0 = r8;;\n"
100		113
101	: "=r" (ch)	114	: "=r" (ch)
102	: "i" (SKI_GETCHAR)	115	: "i" (SKI_GETCHAR)
103	: "r15", "r8"	116	: "r15", "r8"
104	);	117	);
105		118
106	return (int32_t) ch;	119	return (int32_t) ch;
107	}	120	}
108		121
109	/** @}	122	/** @}
110	*/	123	*/
111		124

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/srv/kbd/port/ski.c @ 4346 – Rev 4346 → 4348