lxdream.org :: lxdream/test/asic.c r185:6755a04c447f

tree revision 192:580d6c4d7802

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     1 /**

     2  * $Id: asic.c,v 1.1 2006-07-11 01:35:23 nkeynes Exp $

     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  * Clear all asic events

    47  */

    48 void asic_clear()

    49 {

    50     long_write(ASIC_PIRQ(0), 0xFFFFFFFF);

    51     long_write(ASIC_PIRQ(1), 0xFFFFFFFF);

    52     long_write(ASIC_PIRQ(2), 0xFFFFFFFF);

    53 }

    55 void asic_mask_all()

    56 {

    57     long_write(ASIC_IRQA(0), 0);

    58     long_write(ASIC_IRQA(1), 0);

    59     long_write(ASIC_IRQA(2), 0);

    60     long_write(ASIC_IRQB(0), 0);

    61     long_write(ASIC_IRQB(1), 0);

    62     long_write(ASIC_IRQB(2), 0);

    63     long_write(ASIC_IRQC(0), 0);

    64     long_write(ASIC_IRQC(1), 0);

    65     long_write(ASIC_IRQC(2), 0);

    66 }

    68 /**

    69  * Print the contents of the ASIC event registers to the supplied FILE

    70  */

    71 void asic_dump( FILE *f )

    72 {

    73     int i,j;

    74     fprintf( f, "Events: " );

    75     for( i=0; i<3; i++ ) {

    76 	uint32_t val = long_read(ASIC_PIRQ(i));

    77 	for( j=0; j<32; j++ ) {

    78 	    if( val & (1<<j) ) {

    79 		fprintf( f, "%d ", (i<<5)+j );

    80 	    }

    81 	}

    82     }

    83     fprintf( f, "\n" );

    84 }