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* A few changes to support the new softint mechanism.

This commit is contained in:
matthias 1996-11-24 13:34:44 +00:00
parent 9f82b6d4d1
commit 591a6794e2
1 changed files with 13 additions and 2 deletions
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15
sys/arch/pc532/include/icu.h
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@ -1,4 +1,4 @@
/* $NetBSD: icu.h,v 1.8 1996/10/09 07:28:47 matthias Exp $ */
/* $NetBSD: icu.h,v 1.9 1996/11/24 13:34:44 matthias Exp $ */
/*
* Copyright (c) 1993 Philip A. Nelson.
@ -76,6 +76,16 @@
#define ICUB(n) *((unsigned char *)(ICU_ADR + n))
#define ICUW(n) *((unsigned short *)(ICU_ADR + n))
/*
* ICU IPND register;
* induce h/w interrupt condition atomicly by poking magic value
* into IPND (Interrupt pending register).
*/
#define IPND_SET 0x80
#define IPND_CLR 0x00
#define setsofticu(ir) (ICUB(IPND + (((ir) < 8) ? 0 : 1)) = (IPND_SET + (ir)))
#define clrsofticu(ir) (ICUB(IPND + (((ir) < 8) ? 0 : 1)) = (IPND_CLR + (ir)))
#ifndef _LOCORE
/* Interrupt trigger modes
*/
@ -95,6 +105,7 @@ enum {HIGH_LEVEL, LOW_LEVEL, RISING_EDGE, FALLING_EDGE} int_modes;
#define IR_TTY2RDY 8
#define IR_TTY3 7
#define IR_TTY3RDY 6
#define IR_SOFT 14
/* edge polarity
* 0 0 falling edge
@ -125,7 +136,7 @@ scsi_select_ctlr(int ctlr)
old = (ICUB(PDAT) & ICU_SCSI_BIT) == 0;
if (ctlr == DP8490)
ICUB(PDAT) &= ~ICU_SCSI_BIT; /* select = 0 for 8490 */
ICUB(PDAT) &= ~ICU_SCSI_BIT; /* select = 0 for dp8490 */
else
ICUB(PDAT) |= ICU_SCSI_BIT; /* select = 1 for AIC6250 */
return(old);