filename | test/asic.c |
changeset | 753:1fe39c3a9bbc |
prev | 561:533f6b478071 |
next | 815:866c103d72cd |
author | nkeynes |
date | Thu Aug 07 23:53:17 2008 +0000 (15 years ago) |
permissions | -rw-r--r-- |
last change | Add ability to bind a render buffer to a texture, with output going to the texture. (RTT work in progress) |
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1 /**
2 * $Id$
3 *
4 * General ASIC support code
5 *
6 * Copyright (c) 2006 Nathan Keynes.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
19 #include "lib.h"
21 #define ASIC_BASE 0xA05F6000
22 #define ASIC_PIRQ(n) (ASIC_BASE + 0x900 + (n<<2))
23 #define ASIC_IRQA(n) (ASIC_BASE + 0x910 + (n<<2))
24 #define ASIC_IRQB(n) (ASIC_BASE + 0x920 + (n<<2))
25 #define ASIC_IRQC(n) (ASIC_BASE + 0x930 + (n<<2))
26 #define TIMEOUT 10000000
28 /**
29 * Wait for an ASIC event.
30 * @return 0 if the event occurred, otherwise -1 if the wait timed out.
31 */
32 int asic_wait( int event )
33 {
34 int n = event >> 5;
35 unsigned int mask = (1<< (event&0x1f));
36 int i;
37 for( i=0; i<TIMEOUT; i++ ) {
38 if( long_read(ASIC_PIRQ(n)) & mask ) {
39 return 0;
40 }
41 }
42 return -1; /* Timeout */
43 }
45 /**
46 * Wait for either of 2 ASIC events.
47 * @return the event id if the event occurred, otherwise -1 if the wait timed out.
48 */
49 int asic_wait2( int event1, int event2 )
50 {
51 int n1 = event1 >> 5;
52 int n2 = event2 >> 5;
53 unsigned int mask1 = (1<< (event1&0x1f));
54 unsigned int mask2 = (1<< (event2&0x1f));
55 int i;
56 for( i=0; i<TIMEOUT; i++ ) {
57 if( long_read(ASIC_PIRQ(n1)) & mask1 ) {
58 return event1;
59 }
60 if( long_read(ASIC_PIRQ(n2)) & mask2 ) {
61 return event2;
62 }
63 }
64 return -1; /* Timeout */
65 }
67 /**
68 * Clear all asic events
69 */
70 void asic_clear()
71 {
72 long_write(ASIC_PIRQ(0), 0xFFFFFFFF);
73 long_write(ASIC_PIRQ(1), 0xFFFFFFFF);
74 long_write(ASIC_PIRQ(2), 0xFFFFFFFF);
75 }
77 int asic_check( int event )
78 {
79 int n = event >> 5;
80 unsigned int mask = (1<< (event&0x1f));
81 return (long_read(ASIC_PIRQ(n)) & mask) != 0;
82 }
84 void asic_mask_all()
85 {
86 long_write(ASIC_IRQA(0), 0);
87 long_write(ASIC_IRQA(1), 0);
88 long_write(ASIC_IRQA(2), 0);
89 long_write(ASIC_IRQB(0), 0);
90 long_write(ASIC_IRQB(1), 0);
91 long_write(ASIC_IRQB(2), 0);
92 long_write(ASIC_IRQC(0), 0);
93 long_write(ASIC_IRQC(1), 0);
94 long_write(ASIC_IRQC(2), 0);
95 }
97 /**
98 * Print the contents of the ASIC event registers to the supplied FILE
99 */
100 void asic_dump( FILE *f )
101 {
102 int i,j;
103 fprintf( f, "Events: " );
104 for( i=0; i<3; i++ ) {
105 uint32_t val = long_read(ASIC_PIRQ(i));
106 for( j=0; j<32; j++ ) {
107 if( val & (1<<j) ) {
108 fprintf( f, "%d ", (i<<5)+j );
109 }
110 }
111 }
112 fprintf( f, "\n" );
113 }
.