diff options
Diffstat (limited to 'sys/arch/vax/dec/siivar.h')
| -rw-r--r-- | sys/arch/vax/dec/siivar.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/sys/arch/vax/dec/siivar.h b/sys/arch/vax/dec/siivar.h new file mode 100644 index 00000000000..82a92518d19 --- /dev/null +++ b/sys/arch/vax/dec/siivar.h @@ -0,0 +1,71 @@ +/* $OpenBSD: siivar.h,v 1.1 2008/08/18 23:19:22 miod Exp $ */ +/* $NetBSD: siivar.h,v 1.6 2000/06/02 20:16:51 mhitch Exp $ */ + +#ifndef _SIIVAR_H +#define _SIIVAR_H + +/* + * This structure contains information that a SCSI interface controller + * needs to execute a SCSI command. + */ +typedef struct ScsiCmd { + int unit; /* unit number passed to device done routine */ + int flags; /* control flags for this command (see below) */ + int buflen; /* length of the data buffer in bytes */ + char *buf; /* pointer to data buffer for this command */ + int cmdlen; /* length of data in cmdbuf */ + u_char *cmd; /* buffer for the SCSI command */ + int error; /* compatibility hack for new scsi */ + int lun; /* LUN for MI SCSI */ +} ScsiCmd; + +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_int dmaAddr[2]; /* DMA buffer memory offsets */ + 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 8 +struct sii_softc { + struct device sc_dev; /* us as a device */ + struct scsi_link sc_link; /* scsi link struct */ + ScsiCmd sc_cmd_fake[SII_NCMD]; /* XXX - hack!!! */ + struct scsi_xfer *sc_xs[SII_NCMD]; /* XXX - hack!!! */ + SIIRegs *sc_regs; /* HW address of SII controller chip */ + int sc_flags; + int sc_target; /* target SCSI ID if connected */ + int sc_hostid; + ScsiCmd *sc_cmd[SII_NCMD]; /* active command indexed by ID */ + void (*sii_copytobuf)(void *, u_char *, u_int, int); + void (*sii_copyfrombuf)(void *, u_int, u_char *, int); + + State sc_st[SII_NCMD]; /* state info for each active command */ + + u_char sc_buf[258]; /* used for extended messages */ +}; + +/* Machine-independent back-end attach entry point */ +void sii_attach(struct sii_softc *sc); +int sii_intr(void *sc); + +#endif /* _SIIVAR_H */ |