sys/arch/pmax/ibus/siivar.h

   1 /*      $NetBSD: siivar.h,v 1.2 2006/07/29 19:10:57 ad Exp $    */
   2
   3 #ifndef _SIIVAR_H
   4 #define _SIIVAR_H
   5
   6 /*
   7  * This structure contains information that a SCSI interface controller
   8  * needs to execute a SCSI command.
   9  */
  10 typedef struct ScsiCmd {
  11         int     unit;           /* unit number passed to device done routine */
  12         int     flags;          /* control flags for this command (see below) */
  13         int     buflen;         /* length of the data buffer in bytes */
  14         char    *buf;           /* pointer to data buffer for this command */
  15         int     cmdlen;         /* length of data in cmdbuf */
  16         u_char  *cmd;           /* buffer for the SCSI command */
  17         int     error;          /* compatibility hack for new scsi */
  18         int     lun;            /* LUN for MI SCSI */
  19         struct callout timo_ch; /* timeout callout handle */
  20 } ScsiCmd;
  21
  22 typedef struct scsi_state {
  23         int     statusByte;     /* status byte returned during STATUS_PHASE */
  24         int     dmaDataPhase;   /* which data phase to expect */
  25         int     dmaCurPhase;    /* SCSI phase if DMA is in progress */
  26         int     dmaPrevPhase;   /* SCSI phase of DMA suspended by disconnect */
  27         u_short *dmaAddr[2];    /* DMA buffer memory address */
  28         int     dmaBufIndex;    /* which of the above is currently in use */
  29         int     dmalen;         /* amount to transfer in this chunk */
  30         int     cmdlen;         /* total remaining amount of cmd to transfer */
  31         u_char  *cmd;           /* current pointer within scsicmd->cmd */
  32         int     buflen;         /* total remaining amount of data to transfer */
  33         char    *buf;           /* current pointer within scsicmd->buf */
  34         u_short flags;          /* see below */
  35         u_short prevComm;       /* command reg before disconnect */
  36         u_short dmaCtrl;        /* DMA control register if disconnect */
  37         u_short dmaAddrL;       /* DMA address register if disconnect */
  38         u_short dmaAddrH;       /* DMA address register if disconnect */
  39         u_short dmaCnt;         /* DMA count if disconnect */
  40         u_short dmaByte;        /* DMA byte if disconnect on odd boundary */
  41         u_short dmaReqAck;      /* DMA synchronous xfer offset or 0 if async */
  42 } State;
  43
  44 /* state flags */
  45 #define FIRST_DMA       0x01    /* true if no data DMA started yet */
  46 #define PARITY_ERR      0x02    /* true if parity error seen */
  47
  48 #define SII_NCMD        8
  49 struct siisoftc {
  50         struct device sc_dev;           /* us as a device */
  51         struct scsipi_channel sc_channel;
  52         struct scsipi_adapter sc_adapter;       /* scsipi adapter glue */
  53         ScsiCmd sc_cmd_fake[SII_NCMD];          /* XXX - hack!!! */
  54         struct scsipi_xfer *sc_xs[SII_NCMD];    /* XXX - hack!!! */
  55         void *sc_buf;                   /* DMA buffer (may be special mem) */
  56         SIIRegs *sc_regs;               /* HW address of SII controller chip */
  57         int     sc_flags;
  58         int     sc_target;              /* target SCSI ID if connected */
  59         ScsiCmd *sc_cmd[SII_NCMD];      /* active command indexed by ID */
  60         void  (*sii_copytobuf)(u_short *src, volatile u_short *dst, int ln);
  61         void (*sii_copyfrombuf)(volatile u_short *src, char *dst, int len);
  62
  63         State   sc_st[SII_NCMD];        /* state info for each active command */
  64 };
  65
  66 int     siiintr(void *sc);
  67
  68 /* Machine-indepedent back-end attach entry point */
  69
  70 void    sii_scsi_request(struct scsipi_channel *,
  71                                 scsipi_adapter_req_t, void *);
  72 void    siiattach(struct siisoftc *);
  73
  74 #endif  /* _SIIVAR_H */