1 /* $NetBSD: secreg.h,v 1.1 2006/10/01 12:39:35 bjh21 Exp $ */ 2 3 /* 4 * Ben Harris 2006 5 * 6 * This file is in the public domain. 7 */ 8 9 /* 10 * Register definitions for Acorn SCSI expansion cards (AKA30, AKA31, AKA32) 11 */ 12 13 /* 14 * Offsets are in bus_space units (words) 15 */ 16 17 /* Podule "fast" space */ 18 #define SEC_ROM 0x000 19 #define SEC_ISR 0x800 /* Interrupt status (read-only) */ 20 #define SEC_ISR_SBIC 0x08 /* Interrupt from WD33C93A SBIC */ 21 #define SEC_ISR_DMAC 0x02 /* TC uPD71071 DMAC */ 22 #define SEC_ISR_IRQ 0x01 /* OR of the above */ 23 #define SEC_CLRINT 0x800 /* Clear TC interrupt (write-only) */ 24 #define SEC_MPR 0xc00 /* Memory page register */ 25 #define SEC_MPR_UR 0x80 /* User reset */ 26 #define SEC_MPR_IE 0x40 /* Interrupts enabled */ 27 #define SEC_MPR_PAGE 0x3f /* EPROM/SRAM page address */ 28 29 /* Module space */ 30 #define SEC_SRAM 0x000 31 #define SEC_SBIC 0x800 32 #define SEC_DMAC 0xc00 33 34 /* The address lines of the DMAC are permuted. */ 35 #define DMAC(addr) ((addr) >> 1 | ((addr) & 1) << 7) 36 37 #define SEC_CLKFREQ 80 /* Clock speed in 100 kHz */ 38 #define SEC_NPAGES 16 39 #define SEC_PAGESIZE 4096 40 #define SEC_MEMSIZE (SEC_PAGESIZE * SEC_NPAGES) 41