diff options
Diffstat (limited to 'sys/arch/amiga')
| -rw-r--r-- | sys/arch/amiga/isa/isa_machdep.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/sys/arch/amiga/isa/isa_machdep.c b/sys/arch/amiga/isa/isa_machdep.c new file mode 100644 index 00000000000..bc6e485e2be --- /dev/null +++ b/sys/arch/amiga/isa/isa_machdep.c @@ -0,0 +1,73 @@ +/* $OpenBSD: isa_machdep.c,v 1.4 1999/03/05 19:17:44 niklas Exp $ */ + +/* + * Copyright (c) 1999 Niklas Hallqvist + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Niklas Hallqvist. + * 4. 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. + */ + +#include <sys/types.h> +#include <sys/systm.h> +#include <sys/device.h> + +#include <machine/intr.h> + +#include <dev/isa/isareg.h> +#include <dev/isa/isavar.h> + +/* + * Just check to see if an IRQ is available/can be shared. + * 0 = interrupt not available + * 1 = interrupt shareable + * 2 = interrupt all to ourself + */ +int +__isa_intr_check(irq, type, intrtype) + int irq; + int type; + int *intrtype; +{ + if (type == IST_NONE) + return (0); + + switch (intrtype[irq]) { + case IST_NONE: + return (2); + break; + case IST_LEVEL: + if (type != intrtype[irq]) + return (0); + return (1); + break; + case IST_EDGE: + case IST_PULSE: + if (type != IST_NONE) + return (0); + } + return (1); +} + |