55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
/* $NetBSD: siivar.h,v 1.5 2000/01/08 01:02:36 simonb Exp $ */
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#ifndef _SIIVAR_H
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#define _SIIVAR_H
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typedef struct scsi_state {
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int statusByte; /* status byte returned during STATUS_PHASE */
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int dmaDataPhase; /* which data phase to expect */
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int dmaCurPhase; /* SCSI phase if DMA is in progress */
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int dmaPrevPhase; /* SCSI phase of DMA suspended by disconnect */
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u_short *dmaAddr[2]; /* DMA buffer memory address */
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int dmaBufIndex; /* which of the above is currently in use */
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int dmalen; /* amount to transfer in this chunk */
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int cmdlen; /* total remaining amount of cmd to transfer */
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u_char *cmd; /* current pointer within scsicmd->cmd */
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int buflen; /* total remaining amount of data to transfer */
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char *buf; /* current pointer within scsicmd->buf */
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u_short flags; /* see below */
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u_short prevComm; /* command reg before disconnect */
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u_short dmaCtrl; /* DMA control register if disconnect */
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u_short dmaAddrL; /* DMA address register if disconnect */
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u_short dmaAddrH; /* DMA address register if disconnect */
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u_short dmaCnt; /* DMA count if disconnect */
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u_short dmaByte; /* DMA byte if disconnect on odd boundary */
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u_short dmaReqAck; /* DMA synchronous xfer offset or 0 if async */
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} State;
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/* state flags */
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#define FIRST_DMA 0x01 /* true if no data DMA started yet */
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#define PARITY_ERR 0x02 /* true if parity error seen */
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#define SII_NCMD 8
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struct siisoftc {
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struct device sc_dev; /* us as a device */
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void *sc_buf; /* DMA buffer (may be special mem) */
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SIIRegs *sc_regs; /* HW address of SII controller chip */
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int sc_flags;
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int sc_target; /* target SCSI ID if connected */
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ScsiCmd *sc_cmd[SII_NCMD]; /* active command indexed by ID */
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void (*sii_copytobuf) __P((u_short *src, volatile u_short *dst, int ln));
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void (*sii_copyfrombuf) __P((volatile u_short *src, char *dst, int len));
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State sc_st[SII_NCMD]; /* state info for each active command */
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#ifdef NEW_SCSI
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struct scsipi_link sc_link; /* scsipi lint struct */
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#endif
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};
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int siiintr __P((void *sc));
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/* Machine-indepedent back-end attach entry point */
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void siiattach __P((struct siisoftc *sc));
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#endif /* _SIIVAR_H */
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