NetBSD/sys/dev/qbus/dlreg.h

64 lines
1.7 KiB
C

/* $NetBSD: dlreg.h,v 1.4 2000/05/14 09:46:17 bjh21 Exp $ */
/*
* Ben Harris, 1997
*
* This file is in the Public Domain.
*/
/*
* dlreg.h -- Definitions for the DL11 and DLV11 serial cards.
*
* Style in imitation of dzreg.h.
*/
#ifdef notdef
union w_b
{
u_short word;
struct {
u_char byte_lo;
u_char byte_hi;
} bytes;
};
struct DLregs
{
volatile u_short dl_rcsr; /* Receive Control/Status Register (R/W) */
volatile u_short dl_rbuf; /* Receive Buffer (R) */
volatile u_short dl_xcsr; /* Transmit Control/Status Register (R/W) */
volatile union w_b u_xbuf; /* Transmit Buffer (W) */
#define dl_xbuf u_xbuf.bytes.byte_lo
};
typedef struct DLregs dlregs;
#endif
#define DL_UBA_RCSR 0
#define DL_UBA_RBUF 2
#define DL_UBA_XCSR 4
#define DL_UBA_XBUFL 6
/* RCSR bits */
#define DL_RCSR_RX_DONE 0x0080 /* Receiver Done (R) */
#define DL_RCSR_RXIE 0x0040 /* Receiver Interrupt Enable (R/W) */
#define DL_RCSR_READER_ENABLE 0x0001 /* [paper-tape] Reader Enable (W) */
#define DL_RCSR_BITS "\20\1READER_ENABLE\7RXIE\10RX_DONE\n"
/* RBUF bits */
#define DL_RBUF_ERR 0x8000 /* Error (R) */
#define DL_RBUF_OVERRUN_ERR 0x4000 /* Overrun Error (R) */
#define DL_RBUF_FRAMING_ERR 0x2000 /* Framing Error (R) */
#define DL_RBUF_PARITY_ERR 0x1000 /* Parity Error (R) */
#define DL_RBUF_DATA_MASK 0x00FF /* Receive Data (R) */
#define DL_RBUF_BITS "\20\15PARITY_ERR\16FRAMING_ERR\17OVERRUN_ERR\20ERR\n"
/* XCSR bits */
#define DL_XCSR_TX_READY 0x0080 /* Transmitter Ready (R) */
#define DL_XCSR_TXIE 0x0040 /* Transmit Interrupt Enable (R/W) */
#define DL_XCSR_TX_BREAK 0x0001 /* Transmit Break (R/W) */
#define DL_XCSR_BITS "\20\1TX_BREAK\7TXIE\10TX_READY\n"
/* XBUF is just data byte right justified. */