/*
* 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 */
struct callout timo_ch; /* timeout callout handle */
} 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_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 8
struct siisoftc {
device_t sc_dev; /* us as a device */
struct scsipi_channel sc_channel;
struct scsipi_adapter sc_adapter; /* scsipi adapter glue */
ScsiCmd sc_cmd_fake[SII_NCMD]; /* XXX - hack!!! */
struct scsipi_xfer *sc_xs[SII_NCMD]; /* XXX - hack!!! */
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 */
void (*sii_copytobuf)(u_short *src, volatile u_short *dst, int ln);
void (*sii_copyfrombuf)(volatile u_short *src, char *dst, int len);
State sc_st[SII_NCMD]; /* state info for each active command */
};
int siiintr(void *sc);
/* Machine-independent back-end attach entry point */
