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/* $NetBSD: siivar.h,v 1.1 1996/10/13 03:02:41 jonathan Exp $ */
#ifndef _SIIVAR_H
#define _SIIVAR_H
typedef struct scsi_state {
int statusByte; /* status byte returned during STATUS_PHASE */
int dmaDataPhase; /* which data phase to expect */
int dmaCurPhase; /* SCSI phase if DMA is in progress */
int dmaPrevPhase; /* SCSI phase of DMA suspended by disconnect */
u_short *dmaAddr[2]; /* DMA buffer memory address */
int dmaBufIndex; /* which of the above is currently in use */
int dmalen; /* amount to transfer in this chunk */
int cmdlen; /* total remaining amount of cmd to transfer */
u_char *cmd; /* current pointer within scsicmd->cmd */
int buflen; /* total remaining amount of data to transfer */
char *buf; /* current pointer within scsicmd->buf */
u_short flags; /* see below */
u_short prevComm; /* command reg before disconnect */
u_short dmaCtrl; /* DMA control register if disconnect */
u_short dmaAddrL; /* DMA address register if disconnect */
u_short dmaAddrH; /* DMA address register if disconnect */
u_short dmaCnt; /* DMA count if disconnect */
u_short dmaByte; /* DMA byte if disconnect on odd boundary */
u_short dmaReqAck; /* DMA synchronous xfer offset or 0 if async */
} State;
/* state flags */
#define FIRST_DMA 0x01 /* true if no data DMA started yet */
#define PARITY_ERR 0x02 /* true if parity error seen */
#define SII_NCMD 7
struct siisoftc {
struct device sc_dev; /* us as a device */
void *sc_buf; /* DMA buffer (may be special mem) */
SIIRegs *sc_regs; /* HW address of SII controller chip */
int sc_flags;
int sc_target; /* target SCSI ID if connected */
ScsiCmd *sc_cmd[SII_NCMD]; /* active command indexed by ID */
State sc_st[SII_NCMD]; /* state info for each active command */
#ifdef NEW_SCSI
struct scsi_link sc_link; /* scsi lint struct */
#endif
};
int siiintr __P((void *sc));
/* Machine-indepedent back-end attach entry point */
void siiattach __P((struct siisoftc *sc));
#endif /* _SIIVAR_H */
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