WebSVN – HelenOS – Diff – /branches/dd/kernel/genarch/src/drivers/via-cuda/cuda.c


/*
 * Copyright (C) 2006 Martin Decky
 * 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 ppc32  
 * @{
 */
/** @file
 */
 
#include <arch/drivers/cuda.h>
#include <ddi/irq.h>
#include <arch/asm.h>
#include <console/console.h>
#include <console/chardev.h>
#include <arch/drivers/pic.h>
#include <sysinfo/sysinfo.h>
#include <interrupt.h>
#include <stdarg.h>
 
#define CUDA_IRQ 10
#define SPECIAL     '?'
 
#define PACKET_ADB  0x00
#define PACKET_CUDA 0x01
 
#define CUDA_POWERDOWN 0x0a
 
#define RS 0x200
#define B (0 * RS)
#define A (1 * RS)
#define SR (10 * RS)
#define ACR (11 * RS)
 
#define SR_OUT 0x10
#define TACK 0x10
#define TIP 0x20
 
 
static volatile uint8_t *cuda = NULL;
static irq_t cuda_irq;      /**< Cuda's IRQ. */
 
 
 
 
static char lchars[0x80] = {
    'a',
    's',
    'd',
    'f',
    'h',
    'g',
    'z',
    'x',
    'c',
    'v',
    SPECIAL,
    'b',
    'q',
    'w',
    'e',
    'r',
    'y',
    't',
    '1',
    '2',
    '3',
    '4',
    '6',
    '5',
    '=',
    '9',
    '7',
    '-',
    '8',
    '0',
    ']',
    'o',
    'u',
    '[',
    'i',
    'p',
    '\n',    /* Enter */
    'l',
    'j',
    '\'',
    'k',
    ';',
    '\\',
    ',',
    '/',
    'n',
    'm',
    '.',
    '\t',    /* Tab */
    ' ',
    '`',
    '\b',    /* Backspace */
    SPECIAL,
    SPECIAL, /* Escape */
    SPECIAL, /* Ctrl */
    SPECIAL, /* Alt */
    SPECIAL, /* Shift */
    SPECIAL, /* Caps-Lock */
    SPECIAL, /* RAlt */
    SPECIAL, /* Left */
    SPECIAL, /* Right */
    SPECIAL, /* Down */
    SPECIAL, /* Up */
    SPECIAL,
    SPECIAL,
    '.',     /* Keypad . */
    SPECIAL,
    '*',     /* Keypad * */
    SPECIAL,
    '+',     /* Keypad + */
    SPECIAL,
    SPECIAL, /* NumLock */
    SPECIAL,
    SPECIAL,
    SPECIAL,
    '/',     /* Keypad / */
    '\n',    /* Keypad Enter */
    SPECIAL,
    '-',     /* Keypad - */
    SPECIAL,
    SPECIAL,
    SPECIAL,
    '0',     /* Keypad 0 */
    '1',     /* Keypad 1 */
    '2',     /* Keypad 2 */
    '3',     /* Keypad 3 */
    '4',     /* Keypad 4 */
    '5',     /* Keypad 5 */
    '6',     /* Keypad 6 */
    '7',     /* Keypad 7 */
    SPECIAL,
    '8',     /* Keypad 8 */
    '9',     /* Keypad 9 */
    SPECIAL,
    SPECIAL,
    SPECIAL,
    SPECIAL, /* F5 */
    SPECIAL, /* F6 */
    SPECIAL, /* F7 */
    SPECIAL, /* F3 */
    SPECIAL, /* F8 */
    SPECIAL, /* F9 */
    SPECIAL,
    SPECIAL, /* F11 */
    SPECIAL,
    SPECIAL, /* F13 */
    SPECIAL,
    SPECIAL, /* ScrollLock */
    SPECIAL,
    SPECIAL, /* F10 */
    SPECIAL,
    SPECIAL, /* F12 */
    SPECIAL,
    SPECIAL, /* Pause */
    SPECIAL, /* Insert */
    SPECIAL, /* Home */
    SPECIAL, /* PageUp */
    SPECIAL, /* Delete */
    SPECIAL, /* F4 */
    SPECIAL, /* End */
    SPECIAL, /* F2 */
    SPECIAL, /* PageDown */
    SPECIAL  /* F1 */
};
 
 
void send_packet(const uint8_t kind, index_t count, ...);
 
 
static void receive_packet(uint8_t *kind, index_t count, uint8_t data[])
{
    cuda[B] = cuda[B] & ~TIP;
    *kind = cuda[SR];
   
    index_t i;
    for (i = 0; i < count; i++)
        data[i] = cuda[SR];
   
    cuda[B] = cuda[B] | TIP;
}
 
 
/* Called from getc(). */
static void cuda_resume(chardev_t *d)
{
}
 
 
/* Called from getc(). */
static void cuda_suspend(chardev_t *d)
{
}
 
 
static char key_read(chardev_t *d)
{
    char ch;
   
    ch = 0;
    return ch;
}
 
 
static chardev_t kbrd;
static chardev_operations_t ops = {
    .suspend = cuda_suspend,
    .resume = cuda_resume,
    .read = key_read
};
 
 
int cuda_get_scancode(void)
{
    uint8_t kind;
    uint8_t data[4];
   
    receive_packet(&kind, 4, data);
   
    if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c))
        return data[2];
   
    return -1;
}
 
static void cuda_irq_handler(irq_t *irq, void *arg, ...)
{
    if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)
        ipc_irq_send_notif(irq);
    else {
        int scan_code = cuda_get_scancode();
       
        if (scan_code != -1) {
            uint8_t scancode = (uint8_t) scan_code;
            if ((scancode & 0x80) != 0x80)
                chardev_push_character(&kbrd, lchars[scancode & 0x7f]);
        }
    }
}
 
static irq_ownership_t cuda_claim(void)
{
    return IRQ_ACCEPT;
}
 
 
/** Initialize keyboard and service interrupts using kernel routine */
void cuda_grab(void)
{
 
 
 
    cuda_irq.notif_cfg.notify = false;
 
 
 
}
 
 
/** Resume the former interrupt vector */
void cuda_release(void)
{
    if (cuda_irq.notif_cfg.answerbox)
        cuda_irq.notif_cfg.notify = true;
}
 
 
void cuda_init(devno_t devno, uintptr_t base, size_t size)
{
    cuda = (uint8_t *) hw_map(base, size); 
   
    chardev_initialize("cuda_kbd", &kbrd, &ops);
    stdin = &kbrd;
   
    irq_initialize(&cuda_irq);
    cuda_irq.devno = devno;
    cuda_irq.inr = CUDA_IRQ;
    cuda_irq.claim = cuda_claim;
    cuda_irq.handler = cuda_irq_handler;
    irq_register(&cuda_irq);
   
    pic_enable_interrupt(CUDA_IRQ);
 
    sysinfo_set_item_val("kbd", NULL, true);
    sysinfo_set_item_val("kbd.devno", NULL, devno);
    sysinfo_set_item_val("kbd.inr", NULL, CUDA_IRQ);
    sysinfo_set_item_val("kbd.address.virtual", NULL, base);
 
    cuda_grab();
}
 
 
void send_packet(const uint8_t kind, index_t count, ...)
{
    index_t i;
    va_list va;
   
    cuda[B] = cuda[B] | TIP;
    cuda[ACR] = cuda[ACR] | SR_OUT;
    cuda[SR] = kind;
    cuda[B] = cuda[B] & ~TIP;
   
    va_start(va, count);
   
    for (i = 0; i < count; i++) {
        cuda[ACR] = cuda[ACR] | SR_OUT;
        cuda[SR] = va_arg(va, int);
        cuda[B] = cuda[B] | TACK;
    }
   
    va_end(va);
   
    cuda[B] = cuda[B] | TIP;
}
 
 
void cpu_halt(void) {
#ifdef CONFIG_POWEROFF
    send_packet(PACKET_CUDA, 1, CUDA_POWERDOWN);
#endif
    asm volatile (
        "b 0\n"
    );
}
 
/** @}
 */
 

Rev 1928	Rev 1932
1	/*	1	/*
2	* Copyright (C) 2006 Martin Decky	2	* Copyright (C) 2006 Martin Decky
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 ppc32	29	/** @addtogroup ppc32
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch/drivers/cuda.h>	35	#include <arch/drivers/cuda.h>
36	#include <ddi/irq.h>	36	#include <ddi/irq.h>
37	#include <arch/asm.h>	37	#include <arch/asm.h>
38	#include <console/console.h>	38	#include <console/console.h>
39	#include <console/chardev.h>	39	#include <console/chardev.h>
40	#include <arch/drivers/pic.h>	40	#include <arch/drivers/pic.h>
41	#include <sysinfo/sysinfo.h>	41	#include <sysinfo/sysinfo.h>
42	#include <interrupt.h>	42	#include <interrupt.h>
43	#include <stdarg.h>	43	#include <stdarg.h>
44		44
45	#define CUDA_IRQ 10	45	#define CUDA_IRQ 10
46	#define SPECIAL '?'	46	#define SPECIAL '?'
47		47
48	#define PACKET_ADB 0x00	48	#define PACKET_ADB 0x00
49	#define PACKET_CUDA 0x01	49	#define PACKET_CUDA 0x01
50		50
51	#define CUDA_POWERDOWN 0x0a	51	#define CUDA_POWERDOWN 0x0a
52		52
53	#define RS 0x200	53	#define RS 0x200
54	#define B (0 * RS)	54	#define B (0 * RS)
55	#define A (1 * RS)	55	#define A (1 * RS)
56	#define SR (10 * RS)	56	#define SR (10 * RS)
57	#define ACR (11 * RS)	57	#define ACR (11 * RS)
58		58
59	#define SR_OUT 0x10	59	#define SR_OUT 0x10
60	#define TACK 0x10	60	#define TACK 0x10
61	#define TIP 0x20	61	#define TIP 0x20
62		62
63		63
64	static volatile uint8_t *cuda = NULL;	64	static volatile uint8_t *cuda = NULL;
65	static irq_t cuda_irq; /*< Cuda's IRQ. /	65	static irq_t cuda_irq; /*< Cuda's IRQ. /
66		66
67	static ipc_notif_cfg_t saved_notif_cfg;	-
68		-
69		-
70	static char lchars[0x80] = {	67	static char lchars[0x80] = {
71	'a',	68	'a',
72	's',	69	's',
73	'd',	70	'd',
74	'f',	71	'f',
75	'h',	72	'h',
76	'g',	73	'g',
77	'z',	74	'z',
78	'x',	75	'x',
79	'c',	76	'c',
80	'v',	77	'v',
81	SPECIAL,	78	SPECIAL,
82	'b',	79	'b',
83	'q',	80	'q',
84	'w',	81	'w',
85	'e',	82	'e',
86	'r',	83	'r',
87	'y',	84	'y',
88	't',	85	't',
89	'1',	86	'1',
90	'2',	87	'2',
91	'3',	88	'3',
92	'4',	89	'4',
93	'6',	90	'6',
94	'5',	91	'5',
95	'=',	92	'=',
96	'9',	93	'9',
97	'7',	94	'7',
98	'-',	95	'-',
99	'8',	96	'8',
100	'0',	97	'0',
101	']',	98	']',
102	'o',	99	'o',
103	'u',	100	'u',
104	'[',	101	'[',
105	'i',	102	'i',
106	'p',	103	'p',
107	'\n', /* Enter */	104	'\n', /* Enter */
108	'l',	105	'l',
109	'j',	106	'j',
110	'\'',	107	'\'',
111	'k',	108	'k',
112	';',	109	';',
113	'\\',	110	'\\',
114	',',	111	',',
115	'/',	112	'/',
116	'n',	113	'n',
117	'm',	114	'm',
118	'.',	115	'.',
119	'\t', /* Tab */	116	'\t', /* Tab */
120	' ',	117	' ',
121	'`',	118	'`',
122	'\b', /* Backspace */	119	'\b', /* Backspace */
123	SPECIAL,	120	SPECIAL,
124	SPECIAL, /* Escape */	121	SPECIAL, /* Escape */
125	SPECIAL, /* Ctrl */	122	SPECIAL, /* Ctrl */
126	SPECIAL, /* Alt */	123	SPECIAL, /* Alt */
127	SPECIAL, /* Shift */	124	SPECIAL, /* Shift */
128	SPECIAL, /* Caps-Lock */	125	SPECIAL, /* Caps-Lock */
129	SPECIAL, /* RAlt */	126	SPECIAL, /* RAlt */
130	SPECIAL, /* Left */	127	SPECIAL, /* Left */
131	SPECIAL, /* Right */	128	SPECIAL, /* Right */
132	SPECIAL, /* Down */	129	SPECIAL, /* Down */
133	SPECIAL, /* Up */	130	SPECIAL, /* Up */
134	SPECIAL,	131	SPECIAL,
135	SPECIAL,	132	SPECIAL,
136	'.', /* Keypad . */	133	'.', /* Keypad . */
137	SPECIAL,	134	SPECIAL,
138	'', / Keypad * */	135	'', / Keypad * */
139	SPECIAL,	136	SPECIAL,
140	'+', /* Keypad + */	137	'+', /* Keypad + */
141	SPECIAL,	138	SPECIAL,
142	SPECIAL, /* NumLock */	139	SPECIAL, /* NumLock */
143	SPECIAL,	140	SPECIAL,
144	SPECIAL,	141	SPECIAL,
145	SPECIAL,	142	SPECIAL,
146	'/', /* Keypad / */	143	'/', /* Keypad / */
147	'\n', /* Keypad Enter */	144	'\n', /* Keypad Enter */
148	SPECIAL,	145	SPECIAL,
149	'-', /* Keypad - */	146	'-', /* Keypad - */
150	SPECIAL,	147	SPECIAL,
151	SPECIAL,	148	SPECIAL,
152	SPECIAL,	149	SPECIAL,
153	'0', /* Keypad 0 */	150	'0', /* Keypad 0 */
154	'1', /* Keypad 1 */	151	'1', /* Keypad 1 */
155	'2', /* Keypad 2 */	152	'2', /* Keypad 2 */
156	'3', /* Keypad 3 */	153	'3', /* Keypad 3 */
157	'4', /* Keypad 4 */	154	'4', /* Keypad 4 */
158	'5', /* Keypad 5 */	155	'5', /* Keypad 5 */
159	'6', /* Keypad 6 */	156	'6', /* Keypad 6 */
160	'7', /* Keypad 7 */	157	'7', /* Keypad 7 */
161	SPECIAL,	158	SPECIAL,
162	'8', /* Keypad 8 */	159	'8', /* Keypad 8 */
163	'9', /* Keypad 9 */	160	'9', /* Keypad 9 */
164	SPECIAL,	161	SPECIAL,
165	SPECIAL,	162	SPECIAL,
166	SPECIAL,	163	SPECIAL,
167	SPECIAL, /* F5 */	164	SPECIAL, /* F5 */
168	SPECIAL, /* F6 */	165	SPECIAL, /* F6 */
169	SPECIAL, /* F7 */	166	SPECIAL, /* F7 */
170	SPECIAL, /* F3 */	167	SPECIAL, /* F3 */
171	SPECIAL, /* F8 */	168	SPECIAL, /* F8 */
172	SPECIAL, /* F9 */	169	SPECIAL, /* F9 */
173	SPECIAL,	170	SPECIAL,
174	SPECIAL, /* F11 */	171	SPECIAL, /* F11 */
175	SPECIAL,	172	SPECIAL,
176	SPECIAL, /* F13 */	173	SPECIAL, /* F13 */
177	SPECIAL,	174	SPECIAL,
178	SPECIAL, /* ScrollLock */	175	SPECIAL, /* ScrollLock */
179	SPECIAL,	176	SPECIAL,
180	SPECIAL, /* F10 */	177	SPECIAL, /* F10 */
181	SPECIAL,	178	SPECIAL,
182	SPECIAL, /* F12 */	179	SPECIAL, /* F12 */
183	SPECIAL,	180	SPECIAL,
184	SPECIAL, /* Pause */	181	SPECIAL, /* Pause */
185	SPECIAL, /* Insert */	182	SPECIAL, /* Insert */
186	SPECIAL, /* Home */	183	SPECIAL, /* Home */
187	SPECIAL, /* PageUp */	184	SPECIAL, /* PageUp */
188	SPECIAL, /* Delete */	185	SPECIAL, /* Delete */
189	SPECIAL, /* F4 */	186	SPECIAL, /* F4 */
190	SPECIAL, /* End */	187	SPECIAL, /* End */
191	SPECIAL, /* F2 */	188	SPECIAL, /* F2 */
192	SPECIAL, /* PageDown */	189	SPECIAL, /* PageDown */
193	SPECIAL /* F1 */	190	SPECIAL /* F1 */
194	};	191	};
195		192
196		193
197	void send_packet(const uint8_t kind, index_t count, ...);	194	void send_packet(const uint8_t kind, index_t count, ...);
198		195
199		196
200	static void receive_packet(uint8_t *kind, index_t count, uint8_t data[])	197	static void receive_packet(uint8_t *kind, index_t count, uint8_t data[])
201	{	198	{
202	cuda[B] = cuda[B] & ~TIP;	199	cuda[B] = cuda[B] & ~TIP;
203	*kind = cuda[SR];	200	*kind = cuda[SR];
204		201
205	index_t i;	202	index_t i;
206	for (i = 0; i < count; i++)	203	for (i = 0; i < count; i++)
207	data[i] = cuda[SR];	204	data[i] = cuda[SR];
208		205
209	cuda[B] = cuda[B] \| TIP;	206	cuda[B] = cuda[B] \| TIP;
210	}	207	}
211		208
212		209
213	/* Called from getc(). */	210	/* Called from getc(). */
214	static void cuda_resume(chardev_t *d)	211	static void cuda_resume(chardev_t *d)
215	{	212	{
216	}	213	}
217		214
218		215
219	/* Called from getc(). */	216	/* Called from getc(). */
220	static void cuda_suspend(chardev_t *d)	217	static void cuda_suspend(chardev_t *d)
221	{	218	{
222	}	219	}
223		220
224		221
225	static char key_read(chardev_t *d)	222	static char key_read(chardev_t *d)
226	{	223	{
227	char ch;	224	char ch;
228		225
229	ch = 0;	226	ch = 0;
230	return ch;	227	return ch;
231	}	228	}
232		229
233		230
234	static chardev_t kbrd;	231	static chardev_t kbrd;
235	static chardev_operations_t ops = {	232	static chardev_operations_t ops = {
236	.suspend = cuda_suspend,	233	.suspend = cuda_suspend,
237	.resume = cuda_resume,	234	.resume = cuda_resume,
238	.read = key_read	235	.read = key_read
239	};	236	};
240		237
241		238
242	int cuda_get_scancode(void)	239	int cuda_get_scancode(void)
243	{	240	{
244	uint8_t kind;	241	uint8_t kind;
245	uint8_t data[4];	242	uint8_t data[4];
246		243
247	receive_packet(&kind, 4, data);	244	receive_packet(&kind, 4, data);
248		245
249	if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c))	246	if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c))
250	return data[2];	247	return data[2];
251		248
252	return -1;	249	return -1;
253	}	250	}
254		251
255	static void cuda_irq_handler(irq_t irq, void arg, ...)	252	static void cuda_irq_handler(irq_t irq, void arg, ...)
256	{	253	{
257	if (irq->notif_cfg.answerbox)	254	if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)
258	ipc_irq_send_notif(irq);	255	ipc_irq_send_notif(irq);
259	else {	256	else {
260	int scan_code = cuda_get_scancode();	257	int scan_code = cuda_get_scancode();
261		258
262	if (scan_code != -1) {	259	if (scan_code != -1) {
263	uint8_t scancode = (uint8_t) scan_code;	260	uint8_t scancode = (uint8_t) scan_code;
264	if ((scancode & 0x80) != 0x80)	261	if ((scancode & 0x80) != 0x80)
265	chardev_push_character(&kbrd, lchars[scancode & 0x7f]);	262	chardev_push_character(&kbrd, lchars[scancode & 0x7f]);
266	}	263	}
267	}	264	}
268	}	265	}
269		266
270	static irq_ownership_t cuda_claim(void)	267	static irq_ownership_t cuda_claim(void)
271	{	268	{
272	return IRQ_ACCEPT;	269	return IRQ_ACCEPT;
273	}	270	}
274		271
275		272
276	/** Initialize keyboard and service interrupts using kernel routine */	273	/** Initialize keyboard and service interrupts using kernel routine */
277	void cuda_grab(void)	274	void cuda_grab(void)
278	{	275	{
279	if (cuda_irq.notif_cfg.answerbox) {	-
280	saved_notif_cfg = cuda_irq.notif_cfg;	-
281	cuda_irq.notif_cfg.answerbox = NULL;	-
282	cuda_irq.notif_cfg.code = NULL;	276	cuda_irq.notif_cfg.notify = false;
283	cuda_irq.notif_cfg.method = 0;	-
284	cuda_irq.notif_cfg.counter = 0;	-
285	}	-
286	}	277	}
287		278
288		279
289	/** Resume the former interrupt vector */	280	/** Resume the former interrupt vector */
290	void cuda_release(void)	281	void cuda_release(void)
291	{	282	{
292	if (saved_notif_cfg.answerbox)	283	if (cuda_irq.notif_cfg.answerbox)
293	cuda_irq.notif_cfg = saved_notif_cfg;	284	cuda_irq.notif_cfg.notify = true;
294	}	285	}
295		286
296		287
297	void cuda_init(devno_t devno, uintptr_t base, size_t size)	288	void cuda_init(devno_t devno, uintptr_t base, size_t size)
298	{	289	{
299	cuda = (uint8_t *) hw_map(base, size);	290	cuda = (uint8_t *) hw_map(base, size);
300		291
301	chardev_initialize("cuda_kbd", &kbrd, &ops);	292	chardev_initialize("cuda_kbd", &kbrd, &ops);
302	stdin = &kbrd;	293	stdin = &kbrd;
303		294
304	irq_initialize(&cuda_irq);	295	irq_initialize(&cuda_irq);
305	cuda_irq.devno = devno;	296	cuda_irq.devno = devno;
306	cuda_irq.inr = CUDA_IRQ;	297	cuda_irq.inr = CUDA_IRQ;
307	cuda_irq.claim = cuda_claim;	298	cuda_irq.claim = cuda_claim;
308	cuda_irq.handler = cuda_irq_handler;	299	cuda_irq.handler = cuda_irq_handler;
309	irq_register(&cuda_irq);	300	irq_register(&cuda_irq);
310		301
311	pic_enable_interrupt(CUDA_IRQ);	302	pic_enable_interrupt(CUDA_IRQ);
312		303
313	sysinfo_set_item_val("kbd", NULL, true);	304	sysinfo_set_item_val("kbd", NULL, true);
314	sysinfo_set_item_val("kbd.devno", NULL, devno);	305	sysinfo_set_item_val("kbd.devno", NULL, devno);
315	sysinfo_set_item_val("kbd.inr", NULL, CUDA_IRQ);	306	sysinfo_set_item_val("kbd.inr", NULL, CUDA_IRQ);
316	sysinfo_set_item_val("kbd.address.virtual", NULL, base);	307	sysinfo_set_item_val("kbd.address.virtual", NULL, base);
317		308
318	cuda_grab();	309	cuda_grab();
319	}	310	}
320		311
321		312
322	void send_packet(const uint8_t kind, index_t count, ...)	313	void send_packet(const uint8_t kind, index_t count, ...)
323	{	314	{
324	index_t i;	315	index_t i;
325	va_list va;	316	va_list va;
326		317
327	cuda[B] = cuda[B] \| TIP;	318	cuda[B] = cuda[B] \| TIP;
328	cuda[ACR] = cuda[ACR] \| SR_OUT;	319	cuda[ACR] = cuda[ACR] \| SR_OUT;
329	cuda[SR] = kind;	320	cuda[SR] = kind;
330	cuda[B] = cuda[B] & ~TIP;	321	cuda[B] = cuda[B] & ~TIP;
331		322
332	va_start(va, count);	323	va_start(va, count);
333		324
334	for (i = 0; i < count; i++) {	325	for (i = 0; i < count; i++) {
335	cuda[ACR] = cuda[ACR] \| SR_OUT;	326	cuda[ACR] = cuda[ACR] \| SR_OUT;
336	cuda[SR] = va_arg(va, int);	327	cuda[SR] = va_arg(va, int);
337	cuda[B] = cuda[B] \| TACK;	328	cuda[B] = cuda[B] \| TACK;
338	}	329	}
339		330
340	va_end(va);	331	va_end(va);
341		332
342	cuda[B] = cuda[B] \| TIP;	333	cuda[B] = cuda[B] \| TIP;
343	}	334	}
344		335
345		336
346	void cpu_halt(void) {	337	void cpu_halt(void) {
347	#ifdef CONFIG_POWEROFF	338	#ifdef CONFIG_POWEROFF
348	send_packet(PACKET_CUDA, 1, CUDA_POWERDOWN);	339	send_packet(PACKET_CUDA, 1, CUDA_POWERDOWN);
349	#endif	340	#endif
350	asm volatile (	341	asm volatile (
351	"b 0\n"	342	"b 0\n"
352	);	343	);
353	}	344	}
354		345
355	/** @}	346	/** @}
356	*/	347	*/
357		348

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(root)/branches/dd/kernel/genarch/src/drivers/via-cuda/cuda.c @ 4754 – Rev 1928 → 1932