WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ppc32/src/drivers/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 <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 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 __u8 *cuda = NULL;
 
 
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 __u8 kind, index_t count, ...);
 
 
static void receive_packet(__u8 *kind, index_t count, __u8 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)
{
    __u8 kind;
    __u8 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(int n, istate_t *istate)
{
    int scan_code = cuda_get_scancode();
   
    if (scan_code != -1) {
        __u8 scancode = (__u8) scan_code;
        if ((scancode & 0x80) != 0x80)
            chardev_push_character(&kbrd, lchars[scancode & 0x7f]);
    }
}
 
 
void cuda_init(__address base, size_t size)
{
    cuda = (__u8 *) hw_map(base, size);
   
    int_register(CUDA_IRQ, "cuda", cuda_irq);
    pic_enable_interrupt(CUDA_IRQ);
   
    chardev_initialize("cuda_kbd", &kbrd, &ops);
    stdin = &kbrd;
   
    sysinfo_set_item_val("cuda", NULL, true);
    sysinfo_set_item_val("cuda.irq", NULL, CUDA_IRQ);
}
 
 
void send_packet(const __u8 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 1633	Rev 1702
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
-		30	* @{
-		31	*/
-		32	/** @file
-		33	*/
-		34
29	#include <arch/drivers/cuda.h>	35	#include <arch/drivers/cuda.h>
30	#include <arch/asm.h>	36	#include <arch/asm.h>
31	#include <console/console.h>	37	#include <console/console.h>
32	#include <console/chardev.h>	38	#include <console/chardev.h>
33	#include <arch/drivers/pic.h>	39	#include <arch/drivers/pic.h>
34	#include <sysinfo/sysinfo.h>	40	#include <sysinfo/sysinfo.h>
35	#include <interrupt.h>	41	#include <interrupt.h>
36	#include <stdarg.h>	42	#include <stdarg.h>
37		43
38	#define SPECIAL '?'	44	#define SPECIAL '?'
39		45
40	#define PACKET_ADB 0x00	46	#define PACKET_ADB 0x00
41	#define PACKET_CUDA 0x01	47	#define PACKET_CUDA 0x01
42		48
43	#define CUDA_POWERDOWN 0x0a	49	#define CUDA_POWERDOWN 0x0a
44		50
45	#define RS 0x200	51	#define RS 0x200
46	#define B (0 * RS)	52	#define B (0 * RS)
47	#define A (1 * RS)	53	#define A (1 * RS)
48	#define SR (10 * RS)	54	#define SR (10 * RS)
49	#define ACR (11 * RS)	55	#define ACR (11 * RS)
50		56
51	#define SR_OUT 0x10	57	#define SR_OUT 0x10
52	#define TACK 0x10	58	#define TACK 0x10
53	#define TIP 0x20	59	#define TIP 0x20
54		60
55		61
56	static volatile __u8 *cuda = NULL;	62	static volatile __u8 *cuda = NULL;
57		63
58		64
59	static char lchars[0x80] = {	65	static char lchars[0x80] = {
60	'a',	66	'a',
61	's',	67	's',
62	'd',	68	'd',
63	'f',	69	'f',
64	'h',	70	'h',
65	'g',	71	'g',
66	'z',	72	'z',
67	'x',	73	'x',
68	'c',	74	'c',
69	'v',	75	'v',
70	SPECIAL,	76	SPECIAL,
71	'b',	77	'b',
72	'q',	78	'q',
73	'w',	79	'w',
74	'e',	80	'e',
75	'r',	81	'r',
76	'y',	82	'y',
77	't',	83	't',
78	'1',	84	'1',
79	'2',	85	'2',
80	'3',	86	'3',
81	'4',	87	'4',
82	'6',	88	'6',
83	'5',	89	'5',
84	'=',	90	'=',
85	'9',	91	'9',
86	'7',	92	'7',
87	'-',	93	'-',
88	'8',	94	'8',
89	'0',	95	'0',
90	']',	96	']',
91	'o',	97	'o',
92	'u',	98	'u',
93	'[',	99	'[',
94	'i',	100	'i',
95	'p',	101	'p',
96	'\n', /* Enter */	102	'\n', /* Enter */
97	'l',	103	'l',
98	'j',	104	'j',
99	'\'',	105	'\'',
100	'k',	106	'k',
101	';',	107	';',
102	'\\',	108	'\\',
103	',',	109	',',
104	'/',	110	'/',
105	'n',	111	'n',
106	'm',	112	'm',
107	'.',	113	'.',
108	'\t', /* Tab */	114	'\t', /* Tab */
109	' ',	115	' ',
110	'`',	116	'`',
111	'\b', /* Backspace */	117	'\b', /* Backspace */
112	SPECIAL,	118	SPECIAL,
113	SPECIAL, /* Escape */	119	SPECIAL, /* Escape */
114	SPECIAL, /* Ctrl */	120	SPECIAL, /* Ctrl */
115	SPECIAL, /* Alt */	121	SPECIAL, /* Alt */
116	SPECIAL, /* Shift */	122	SPECIAL, /* Shift */
117	SPECIAL, /* Caps-Lock */	123	SPECIAL, /* Caps-Lock */
118	SPECIAL, /* RAlt */	124	SPECIAL, /* RAlt */
119	SPECIAL, /* Left */	125	SPECIAL, /* Left */
120	SPECIAL, /* Right */	126	SPECIAL, /* Right */
121	SPECIAL, /* Down */	127	SPECIAL, /* Down */
122	SPECIAL, /* Up */	128	SPECIAL, /* Up */
123	SPECIAL,	129	SPECIAL,
124	SPECIAL,	130	SPECIAL,
125	'.', /* Keypad . */	131	'.', /* Keypad . */
126	SPECIAL,	132	SPECIAL,
127	'', / Keypad * */	133	'', / Keypad * */
128	SPECIAL,	134	SPECIAL,
129	'+', /* Keypad + */	135	'+', /* Keypad + */
130	SPECIAL,	136	SPECIAL,
131	SPECIAL, /* NumLock */	137	SPECIAL, /* NumLock */
132	SPECIAL,	138	SPECIAL,
133	SPECIAL,	139	SPECIAL,
134	SPECIAL,	140	SPECIAL,
135	'/', /* Keypad / */	141	'/', /* Keypad / */
136	'\n', /* Keypad Enter */	142	'\n', /* Keypad Enter */
137	SPECIAL,	143	SPECIAL,
138	'-', /* Keypad - */	144	'-', /* Keypad - */
139	SPECIAL,	145	SPECIAL,
140	SPECIAL,	146	SPECIAL,
141	SPECIAL,	147	SPECIAL,
142	'0', /* Keypad 0 */	148	'0', /* Keypad 0 */
143	'1', /* Keypad 1 */	149	'1', /* Keypad 1 */
144	'2', /* Keypad 2 */	150	'2', /* Keypad 2 */
145	'3', /* Keypad 3 */	151	'3', /* Keypad 3 */
146	'4', /* Keypad 4 */	152	'4', /* Keypad 4 */
147	'5', /* Keypad 5 */	153	'5', /* Keypad 5 */
148	'6', /* Keypad 6 */	154	'6', /* Keypad 6 */
149	'7', /* Keypad 7 */	155	'7', /* Keypad 7 */
150	SPECIAL,	156	SPECIAL,
151	'8', /* Keypad 8 */	157	'8', /* Keypad 8 */
152	'9', /* Keypad 9 */	158	'9', /* Keypad 9 */
153	SPECIAL,	159	SPECIAL,
154	SPECIAL,	160	SPECIAL,
155	SPECIAL,	161	SPECIAL,
156	SPECIAL, /* F5 */	162	SPECIAL, /* F5 */
157	SPECIAL, /* F6 */	163	SPECIAL, /* F6 */
158	SPECIAL, /* F7 */	164	SPECIAL, /* F7 */
159	SPECIAL, /* F3 */	165	SPECIAL, /* F3 */
160	SPECIAL, /* F8 */	166	SPECIAL, /* F8 */
161	SPECIAL, /* F9 */	167	SPECIAL, /* F9 */
162	SPECIAL,	168	SPECIAL,
163	SPECIAL, /* F11 */	169	SPECIAL, /* F11 */
164	SPECIAL,	170	SPECIAL,
165	SPECIAL, /* F13 */	171	SPECIAL, /* F13 */
166	SPECIAL,	172	SPECIAL,
167	SPECIAL, /* ScrollLock */	173	SPECIAL, /* ScrollLock */
168	SPECIAL,	174	SPECIAL,
169	SPECIAL, /* F10 */	175	SPECIAL, /* F10 */
170	SPECIAL,	176	SPECIAL,
171	SPECIAL, /* F12 */	177	SPECIAL, /* F12 */
172	SPECIAL,	178	SPECIAL,
173	SPECIAL, /* Pause */	179	SPECIAL, /* Pause */
174	SPECIAL, /* Insert */	180	SPECIAL, /* Insert */
175	SPECIAL, /* Home */	181	SPECIAL, /* Home */
176	SPECIAL, /* PageUp */	182	SPECIAL, /* PageUp */
177	SPECIAL, /* Delete */	183	SPECIAL, /* Delete */
178	SPECIAL, /* F4 */	184	SPECIAL, /* F4 */
179	SPECIAL, /* End */	185	SPECIAL, /* End */
180	SPECIAL, /* F2 */	186	SPECIAL, /* F2 */
181	SPECIAL, /* PageDown */	187	SPECIAL, /* PageDown */
182	SPECIAL /* F1 */	188	SPECIAL /* F1 */
183	};	189	};
184		190
185		191
186	void send_packet(const __u8 kind, index_t count, ...);	192	void send_packet(const __u8 kind, index_t count, ...);
187		193
188		194
189	static void receive_packet(__u8 *kind, index_t count, __u8 data[])	195	static void receive_packet(__u8 *kind, index_t count, __u8 data[])
190	{	196	{
191	cuda[B] = cuda[B] & ~TIP;	197	cuda[B] = cuda[B] & ~TIP;
192	*kind = cuda[SR];	198	*kind = cuda[SR];
193		199
194	index_t i;	200	index_t i;
195	for (i = 0; i < count; i++)	201	for (i = 0; i < count; i++)
196	data[i] = cuda[SR];	202	data[i] = cuda[SR];
197		203
198	cuda[B] = cuda[B] \| TIP;	204	cuda[B] = cuda[B] \| TIP;
199	}	205	}
200		206
201		207
202	/* Called from getc(). */	208	/* Called from getc(). */
203	static void cuda_resume(chardev_t *d)	209	static void cuda_resume(chardev_t *d)
204	{	210	{
205	}	211	}
206		212
207		213
208	/* Called from getc(). */	214	/* Called from getc(). */
209	static void cuda_suspend(chardev_t *d)	215	static void cuda_suspend(chardev_t *d)
210	{	216	{
211	}	217	}
212		218
213		219
214	static char key_read(chardev_t *d)	220	static char key_read(chardev_t *d)
215	{	221	{
216	char ch;	222	char ch;
217		223
218	ch = 0;	224	ch = 0;
219	return ch;	225	return ch;
220	}	226	}
221		227
222		228
223	static chardev_t kbrd;	229	static chardev_t kbrd;
224	static chardev_operations_t ops = {	230	static chardev_operations_t ops = {
225	.suspend = cuda_suspend,	231	.suspend = cuda_suspend,
226	.resume = cuda_resume,	232	.resume = cuda_resume,
227	.read = key_read	233	.read = key_read
228	};	234	};
229		235
230		236
231	int cuda_get_scancode(void)	237	int cuda_get_scancode(void)
232	{	238	{
233	__u8 kind;	239	__u8 kind;
234	__u8 data[4];	240	__u8 data[4];
235		241
236	receive_packet(&kind, 4, data);	242	receive_packet(&kind, 4, data);
237		243
238	if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c))	244	if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c))
239	return data[2];	245	return data[2];
240		246
241	return -1;	247	return -1;
242	}	248	}
243		249
244	static void cuda_irq(int n, istate_t *istate)	250	static void cuda_irq(int n, istate_t *istate)
245	{	251	{
246	int scan_code = cuda_get_scancode();	252	int scan_code = cuda_get_scancode();
247		253
248	if (scan_code != -1) {	254	if (scan_code != -1) {
249	__u8 scancode = (__u8) scan_code;	255	__u8 scancode = (__u8) scan_code;
250	if ((scancode & 0x80) != 0x80)	256	if ((scancode & 0x80) != 0x80)
251	chardev_push_character(&kbrd, lchars[scancode & 0x7f]);	257	chardev_push_character(&kbrd, lchars[scancode & 0x7f]);
252	}	258	}
253	}	259	}
254		260
255		261
256	void cuda_init(__address base, size_t size)	262	void cuda_init(__address base, size_t size)
257	{	263	{
258	cuda = (__u8 *) hw_map(base, size);	264	cuda = (__u8 *) hw_map(base, size);
259		265
260	int_register(CUDA_IRQ, "cuda", cuda_irq);	266	int_register(CUDA_IRQ, "cuda", cuda_irq);
261	pic_enable_interrupt(CUDA_IRQ);	267	pic_enable_interrupt(CUDA_IRQ);
262		268
263	chardev_initialize("cuda_kbd", &kbrd, &ops);	269	chardev_initialize("cuda_kbd", &kbrd, &ops);
264	stdin = &kbrd;	270	stdin = &kbrd;
265		271
266	sysinfo_set_item_val("cuda", NULL, true);	272	sysinfo_set_item_val("cuda", NULL, true);
267	sysinfo_set_item_val("cuda.irq", NULL, CUDA_IRQ);	273	sysinfo_set_item_val("cuda.irq", NULL, CUDA_IRQ);
268	}	274	}
269		275
270		276
271	void send_packet(const __u8 kind, index_t count, ...)	277	void send_packet(const __u8 kind, index_t count, ...)
272	{	278	{
273	index_t i;	279	index_t i;
274	va_list va;	280	va_list va;
275		281
276	cuda[B] = cuda[B] \| TIP;	282	cuda[B] = cuda[B] \| TIP;
277	cuda[ACR] = cuda[ACR] \| SR_OUT;	283	cuda[ACR] = cuda[ACR] \| SR_OUT;
278	cuda[SR] = kind;	284	cuda[SR] = kind;
279	cuda[B] = cuda[B] & ~TIP;	285	cuda[B] = cuda[B] & ~TIP;
280		286
281	va_start(va, count);	287	va_start(va, count);
282		288
283	for (i = 0; i < count; i++) {	289	for (i = 0; i < count; i++) {
284	cuda[ACR] = cuda[ACR] \| SR_OUT;	290	cuda[ACR] = cuda[ACR] \| SR_OUT;
285	cuda[SR] = va_arg(va, int);	291	cuda[SR] = va_arg(va, int);
286	cuda[B] = cuda[B] \| TACK;	292	cuda[B] = cuda[B] \| TACK;
287	}	293	}
288		294
289	va_end(va);	295	va_end(va);
290		296
291	cuda[B] = cuda[B] \| TIP;	297	cuda[B] = cuda[B] \| TIP;
292	}	298	}
293		299
294		300
295	void cpu_halt(void) {	301	void cpu_halt(void) {
296	#ifdef CONFIG_POWEROFF	302	#ifdef CONFIG_POWEROFF
297	send_packet(PACKET_CUDA, 1, CUDA_POWERDOWN);	303	send_packet(PACKET_CUDA, 1, CUDA_POWERDOWN);
298	#endif	304	#endif
299	asm volatile (	305	asm volatile (
300	"b 0\n"	306	"b 0\n"
301	);	307	);
302	}	308	}
-		309
-		310	/** @}
-		311	*/
-		312
303		313

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ppc32/src/drivers/cuda.c – Rev 1633 → 1702