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scsiconf.h revision 1.1 
      1 /*
      2  * Written by Julian Elischer (julian (at) tfs.com)
      3  * for TRW Financial Systems for use under the MACH(2.5) operating system.
      4  *
      5  * TRW Financial Systems, in accordance with their agreement with Carnegie
      6  * Mellon University, makes this software available to CMU to distribute
      7  * or use in any manner that they see fit as long as this message is kept with
      8  * the software. For this reason TFS also grants any other persons or
      9  * organisations permission to use or modify this software.
     10  *
     11  * TFS supplies this software to be publicly redistributed
     12  * on the understanding that TFS is not responsible for the correct
     13  * functioning of this software in any circumstances.
     14  *
     15  * PATCHES MAGIC                LEVEL   PATCH THAT GOT US HERE
     16  * --------------------         -----   ----------------------
     17  * CURRENT PATCH LEVEL:         1       00098
     18  * --------------------         -----   ----------------------
     19  *
     20  * 16 Feb 93	Julian Elischer		ADDED for SCSI system
     21  *
     22  */
     23 
     24 /*
     25  * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992
     26  */
     27 
     28 /***********************************************\
     29 * these calls are called by the high-end	*
     30 * drivers to get services from whatever low-end	*
     31 * drivers they are attached to			*
     32 \***********************************************/
     33 struct scsi_switch
     34 {
     35 	int		(*scsi_cmd)();
     36 	void		(*scsi_minphys)();
     37 	int		(*open_target_lu)();
     38 	int		(*close_target_lu)();
     39 	long	int	(*adapter_info)(); /* see definitions below */
     40 	u_long	spare[3];
     41 };
     42 #define	AD_INF_MAX_CMDS		0x000000FF /* maximum number of entries
     43 						queuable to a device by
     44 						the adapter */
     45 /* 24 bits of other adapter charcteristics go here */
     46 
     47 /***********************************************\
     48 * The scsi debug control bits			*
     49 \***********************************************/
     50 extern	int	scsi_debug;
     51 #define PRINTROUTINES	0x01
     52 #define	TRACEOPENS	0x02
     53 #define	TRACEINTERRUPTS	0x04
     54 #define	SHOWREQUESTS	0x08
     55 #define	SHOWSCATGATH	0x10
     56 #define	SHOWINQUIRY	0x20
     57 #define	SHOWCOMMANDS	0x40
     58 
     59 
     60 /********************************/
     61 /* return values for scsi_cmd() */
     62 /********************************/
     63 #define SUCCESSFULLY_QUEUED	0
     64 #define TRY_AGAIN_LATER		1
     65 #define	COMPLETE		2
     66 #define	HAD_ERROR		3
     67 
     68 struct scsi_xfer
     69 {
     70 	struct	scsi_xfer *next;	/* when free */
     71 	int	flags;
     72 	u_char	adapter;
     73 	u_char	targ;
     74 	u_char	lu;
     75 	u_char	retries;	/* the number of times to retry */
     76 	long	int	timeout;	/* in miliseconds */
     77 	struct	scsi_generic *cmd;
     78 	int	cmdlen;
     79 	u_char	*data;		/* either the dma address OR a uio address */
     80 	int	datalen;	/* data len (blank if uio)    */
     81 	int	resid;
     82 	int	(*when_done)();
     83 	int	done_arg;
     84 	int	done_arg2;
     85 	int	error;
     86 	struct	buf *bp;
     87 	struct	scsi_sense_data	sense;
     88 };
     89 /********************************/
     90 /* Flag values			*/
     91 /********************************/
     92 #define	SCSI_NOSLEEP	0x01	/* Not a user... don't sleep		*/
     93 #define	SCSI_NOMASK	0x02	/* dont allow interrupts.. booting	*/
     94 #define	SCSI_NOSTART	0x04	/* left over from ancient history	*/
     95 #define	ITSDONE		0x10	/* the transfer is as done as it gets	*/
     96 #define	INUSE		0x20	/* The scsi_xfer block is in use	*/
     97 #define	SCSI_SILENT	0x40	/* Don't report errors to console	*/
     98 #define SCSI_ERR_OK	0x80	/* An error on this operation is OK.	*/
     99 #define	SCSI_RESET	0x100	/* Reset the device in question		*/
    100 #define	SCSI_DATA_UIO	0x200	/* The data address refers to a UIO	*/
    101 #define	SCSI_DATA_IN	0x400	/* expect data to come INTO memory	*/
    102 #define	SCSI_DATA_OUT	0x800	/* expect data to flow OUT of memory	*/
    103 #define	SCSI_TARGET	0x1000	/* This defines a TARGET mode op.	*/
    104 /********************************/
    105 /* Error values			*/
    106 /********************************/
    107 #define XS_NOERROR	0x0	/* there is no error, (sense is invalid)  */
    108 #define XS_SENSE	0x1	/* Check the returned sense for the error */
    109 #define	XS_DRIVER_STUFFUP 0x2	/* Driver failed to perform operation	  */
    110 #define XS_TIMEOUT	0x03	/* The device timed out.. turned off?	  */
    111 #define XS_SWTIMEOUT	0x04	/* The Timeout reported was caught by SW  */
    112 #define XS_BUSY		0x08	/* The device busy, try again later?	  */
    113 
    114