1 /* $NetBSD: siivar.h,v 1.5 2021/12/26 16:08:20 andvar 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 device_t 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-independent 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 */ 75