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scsiconf.h revision 1.2 
      1 /*
      2  * Written by Julian Elischer (julian (at) tfs.com)
      3  * Hacked by Theo de Raadt <deraadt (at) fsa.ca>
      4  * for TRW Financial Systems for use under the MACH(2.5) operating system.
      5  *
      6  * TRW Financial Systems, in accordance with their agreement with Carnegie
      7  * Mellon University, makes this software available to CMU to distribute
      8  * or use in any manner that they see fit as long as this message is kept with
      9  * the software. For this reason TFS also grants any other persons or
     10  * organisations permission to use or modify this software.
     11  *
     12  * TFS supplies this software to be publicly redistributed
     13  * on the understanding that TFS is not responsible for the correct
     14  * functioning of this software in any circumstances.
     15  */
     16 
     17 /*
     18  * these calls are called by the high-end
     19  * drivers to get services from whatever low-end
     20  * drivers they are attached to
     21  */
     22 struct scsi_switch {
     23 	char *name;
     24 	int (*scsi_cmd)();
     25 	void (*scsi_minphys)();
     26 	int (*open_target_lu)();
     27 	int (*close_target_lu)();
     28 	long int (*adapter_info)(); /* see definitions below */
     29 	u_long	spare[3];
     30 	u_char	empty[8], used[8], printed[8];
     31 };
     32 #define	AD_INF_MAX_CMDS		0x000000FF /* maximum number of entries
     33 						queuable to a device by
     34 						the adapter */
     35 /* 24 bits of other adapter charcteristics go here */
     36 
     37 /***********************************************\
     38 * The scsi debug control bits			*
     39 \***********************************************/
     40 extern	int	scsi_debug;
     41 #define PRINTROUTINES	0x01
     42 #define	TRACEOPENS	0x02
     43 #define	TRACEINTERRUPTS	0x04
     44 #define	SHOWREQUESTS	0x08
     45 #define	SHOWSCATGATH	0x10
     46 #define	SHOWINQUIRY	0x20
     47 #define	SHOWCOMMANDS	0x40
     48 
     49 
     50 /********************************/
     51 /* return values for scsi_cmd() */
     52 /********************************/
     53 #define SUCCESSFULLY_QUEUED	0
     54 #define TRY_AGAIN_LATER		1
     55 #define	COMPLETE		2
     56 #define	HAD_ERROR		3
     57 
     58 struct scsi_xfer
     59 {
     60 	struct	scsi_xfer *next;	/* when free */
     61 	int	flags;
     62 	u_char	adapter;
     63 	u_char	targ;
     64 	u_char	lu;
     65 	u_char	retries;	/* the number of times to retry */
     66 	long	int	timeout;	/* in miliseconds */
     67 	struct	scsi_generic *cmd;
     68 	int	cmdlen;
     69 	u_char	*data;		/* either the dma address OR a uio address */
     70 	int	datalen;	/* data len (blank if uio)    */
     71 	int	resid;
     72 	int	(*when_done)();
     73 	int	done_arg;
     74 	int	done_arg2;
     75 	int	error;
     76 	struct	buf *bp;
     77 	struct	scsi_sense_data	sense;
     78 };
     79 /********************************/
     80 /* Flag values			*/
     81 /********************************/
     82 #define	SCSI_NOSLEEP	0x01	/* Not a user... don't sleep		*/
     83 #define	SCSI_NOMASK	0x02	/* dont allow interrupts.. booting	*/
     84 #define	SCSI_NOSTART	0x04	/* left over from ancient history	*/
     85 #define	ITSDONE		0x10	/* the transfer is as done as it gets	*/
     86 #define	INUSE		0x20	/* The scsi_xfer block is in use	*/
     87 #define	SCSI_SILENT	0x40	/* Don't report errors to console	*/
     88 #define SCSI_ERR_OK	0x80	/* An error on this operation is OK.	*/
     89 #define	SCSI_RESET	0x100	/* Reset the device in question		*/
     90 #define	SCSI_DATA_UIO	0x200	/* The data address refers to a UIO	*/
     91 #define	SCSI_DATA_IN	0x400	/* expect data to come INTO memory	*/
     92 #define	SCSI_DATA_OUT	0x800	/* expect data to flow OUT of memory	*/
     93 #define	SCSI_TARGET	0x1000	/* This defines a TARGET mode op.	*/
     94 /********************************/
     95 /* Error values			*/
     96 /********************************/
     97 #define XS_NOERROR	0x0	/* there is no error, (sense is invalid)  */
     98 #define XS_SENSE	0x1	/* Check the returned sense for the error */
     99 #define	XS_DRIVER_STUFFUP 0x2	/* Driver failed to perform operation	  */
    100 #define XS_TIMEOUT	0x03	/* The device timed out.. turned off?	  */
    101 #define XS_SWTIMEOUT	0x04	/* The Timeout reported was caught by SW  */
    102 #define XS_BUSY		0x08	/* The device busy, try again later?	  */
    103 
    104 /*
    105  * The structure of known drivers for autoconfiguration
    106  */
    107 #define SC_TSD	0
    108 #define SC_TST	1
    109 #define SC_TCD	2
    110 
    111 #define SC_SHOWME	0x01
    112 #define	SC_ONE_LU	0x00
    113 #define	SC_MORE_LUS	0x02
    114 struct scsidevs {
    115 	int type, dtype, removable;
    116 	char *manufacturer, *model, *version;
    117 	int (*attach_rtn)();
    118 	char *devname, flags;
    119 };
    120 
    121 int scsi_inquire(int, int, int,	struct scsi_switch *, u_char *, int);
    122 int scsi_ready(int, int, int, struct scsi_switch *, int);
    123 int scsi_attach(int, int, struct scsi_switch *, int *, int *, int);
    124 void scsi_warn(int, int, struct scsi_switch *);
    125 struct scsidevs *scsi_probe(int, struct scsi_switch *, int, int, int);
    126 struct scsidevs *selectdev(int, int, int, struct scsi_switch *,
    127 	int, int, int, char *, char *, char *, int);
    128 u_long _3btol(u_char *);
    129 void lto3b(u_long, u_char *);
    130 
    131