lxdream 0.9.1| filename | test/asic.c |
| changeset | 815:866c103d72cd |
| prev | 753:1fe39c3a9bbc |
| author | nkeynes |
| date | Sat Dec 27 02:59:35 2008 +0000 (15 years ago) |
| branch | lxdream-mem |
| permissions | -rw-r--r-- |
| last change | Replace fpscr_mask/fpscr flags in xlat_cache_block with a single xlat_sh4_mode, which tracks the field of the same name in sh4r - actually a little faster this way. Now depends on SR.MD, FPSCR.PR and FPSCR.SZ (although it doesn't benefit from the SR flag yet). Also fixed the failure to check the flags in the common case (code address returned by previous block) which took away the performance benefits, but oh well. |
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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 G2_FIFO (ASIC_BASE + 0x88C)
27 #define TIMEOUT 10000000
29 /**
30 * Wait for an ASIC event.
31 * @return 0 if the event occurred, otherwise -1 if the wait timed out.
32 */
33 int asic_wait( int event )
34 {
35 int n = event >> 5;
36 unsigned int mask = (1<< (event&0x1f));
37 int i;
38 for( i=0; i<TIMEOUT; i++ ) {
39 if( long_read(ASIC_PIRQ(n)) & mask ) {
40 return 0;
41 }
42 }
43 return -1; /* Timeout */
44 }
46 /**
47 * Wait for either of 2 ASIC events.
48 * @return the event id if the event occurred, otherwise -1 if the wait timed out.
49 */
50 int asic_wait2( int event1, int event2 )
51 {
52 int n1 = event1 >> 5;
53 int n2 = event2 >> 5;
54 unsigned int mask1 = (1<< (event1&0x1f));
55 unsigned int mask2 = (1<< (event2&0x1f));
56 int i;
57 for( i=0; i<TIMEOUT; i++ ) {
58 if( long_read(ASIC_PIRQ(n1)) & mask1 ) {
59 return event1;
60 }
61 if( long_read(ASIC_PIRQ(n2)) & mask2 ) {
62 return event2;
63 }
64 }
65 return -1; /* Timeout */
66 }
68 /**
69 * Clear all asic events
70 */
71 void asic_clear()
72 {
73 long_write(ASIC_PIRQ(0), 0xFFFFFFFF);
74 long_write(ASIC_PIRQ(1), 0xFFFFFFFF);
75 long_write(ASIC_PIRQ(2), 0xFFFFFFFF);
76 }
78 int asic_check( int event )
79 {
80 int n = event >> 5;
81 unsigned int mask = (1<< (event&0x1f));
82 return (long_read(ASIC_PIRQ(n)) & mask) != 0;
83 }
85 void asic_mask_all()
86 {
87 long_write(ASIC_IRQA(0), 0);
88 long_write(ASIC_IRQA(1), 0);
89 long_write(ASIC_IRQA(2), 0);
90 long_write(ASIC_IRQB(0), 0);
91 long_write(ASIC_IRQB(1), 0);
92 long_write(ASIC_IRQB(2), 0);
93 long_write(ASIC_IRQC(0), 0);
94 long_write(ASIC_IRQC(1), 0);
95 long_write(ASIC_IRQC(2), 0);
96 }
98 /**
99 * Print the contents of the ASIC event registers to the supplied FILE
100 */
101 void asic_dump( FILE *f )
102 {
103 int i,j;
104 fprintf( f, "Events: " );
105 for( i=0; i<3; i++ ) {
106 uint32_t val = long_read(ASIC_PIRQ(i));
107 for( j=0; j<32; j++ ) {
108 if( val & (1<<j) ) {
109 fprintf( f, "%d ", (i<<5)+j );
110 }
111 }
112 }
113 fprintf( f, "\n" );
114 }
116 /**
117 * Wait until the g2 fifo is clear to write more data.
118 */
119 int g2_fifo_wait()
120 {
121 int i;
122 for (i=0; i<0x1800; i++) {
123 if (!(long_read(G2_FIFO) & 0x11)) {
124 return 0;
125 }
127 }
128 return -1;
129 }
.