sys/dev/podulebus/secreg.h

   1 /* $NetBSD$ */
   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)