/* $NetBSD: secreg.h,v 1.1 2006/10/01 12:39:35 bjh21 Exp $ */
/*
* Ben Harris 2006
*
* This file is in the public domain.
*/
/*
* Register definitions for Acorn SCSI expansion cards (AKA30, AKA31, AKA32)
*/
/*
* Offsets are in bus_space units (words)
*/
/* Podule "fast" space */
#define SEC_ROM 0x000
#define SEC_ISR 0x800 /* Interrupt status (read-only) */
#define SEC_ISR_SBIC 0x08 /* Interrupt from WD33C93A SBIC */
#define SEC_ISR_DMAC 0x02 /* TC uPD71071 DMAC */
#define SEC_ISR_IRQ 0x01 /* OR of the above */
#define SEC_CLRINT 0x800 /* Clear TC interrupt (write-only) */
#define SEC_MPR 0xc00 /* Memory page register */
#define SEC_MPR_UR 0x80 /* User reset */
#define SEC_MPR_IE 0x40 /* Interrupts enabled */
#define SEC_MPR_PAGE 0x3f /* EPROM/SRAM page address */
/* Module space */
#define SEC_SRAM 0x000
#define SEC_SBIC 0x800
#define SEC_DMAC 0xc00
/* The address lines of the DMAC are permuted. */
#define DMAC(addr) ((addr) >> 1 | ((addr) & 1) << 7)
#define SEC_CLKFREQ 80 /* Clock speed in 100 kHz */
#define SEC_NPAGES 16
#define SEC_PAGESIZE 4096
#define SEC_MEMSIZE (SEC_PAGESIZE * SEC_NPAGES)
