133 lines
4.6 KiB
C
133 lines
4.6 KiB
C
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/*
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* Written by Julian Elischer (julian@tfs.com)
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* PATCHES MAGIC LEVEL PATCH THAT GOT US HERE
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* -------------------- ----- ----------------------
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* CURRENT PATCH LEVEL: 1 00098
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* -------------------- ----- ----------------------
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*
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* 16 Feb 93 Julian Elischer ADDED for SCSI system
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*
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*/
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/*
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* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
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*/
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/***********************************************\
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* these calls are called by the high-end *
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* drivers to get services from whatever low-end *
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* drivers they are attached to *
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\***********************************************/
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struct scsi_switch
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{
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int (*scsi_cmd)();
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void (*scsi_minphys)();
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int (*open_target_lu)();
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int (*close_target_lu)();
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long int (*adapter_info)(); /* see definitions below */
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u_long spare[3];
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};
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#define AD_INF_MAX_CMDS 0x000000FF /* maximum number of entries
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queuable to a device by
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the adapter */
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/* 24 bits of other adapter characteristics go here */
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/***********************************************\
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* The scsi debug control bits *
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\***********************************************/
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extern int scsi_debug;
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#define PRINTROUTINES 0x01
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#define TRACEOPENS 0x02
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#define TRACEINTERRUPTS 0x04
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#define SHOWREQUESTS 0x08
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#define SHOWSCATGATH 0x10
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#define SHOWINQUIRY 0x20
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#define SHOWCOMMANDS 0x40
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/********************************/
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/* return values for scsi_cmd() */
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/********************************/
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#define SUCCESSFULLY_QUEUED 0
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#define TRY_AGAIN_LATER 1
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#define COMPLETE 2
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#define HAD_ERROR 3
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#define ESCAPE_NOT_SUPPORTED 4
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struct scsi_xfer
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{
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struct scsi_xfer *next; /* when free */
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int flags;
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u_char adapter;
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u_char targ;
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u_char lu;
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u_char retries; /* the number of times to retry */
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long int timeout; /* in miliseconds */
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struct scsi_generic *cmd;
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int cmdlen;
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u_char *data; /* either the dma address OR a uio address */
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int datalen; /* data len (blank if uio) */
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int resid;
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int (*when_done)();
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int done_arg;
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int done_arg2;
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int error;
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struct buf *bp;
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struct scsi_sense_data sense;
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/* Believe it or not, Some targets fall on the ground with
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* anything but a certain sense length.
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*/
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int req_sense_length; /* Explicit request sense length */
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int status; /* SCSI status */
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};
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/********************************/
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/* Flag values */
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/********************************/
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#define SCSI_NOSLEEP 0x01 /* Not a user... don't sleep */
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#define SCSI_NOMASK 0x02 /* dont allow interrupts.. booting */
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#define SCSI_NOSTART 0x04 /* left over from ancient history */
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#define ITSDONE 0x10 /* the transfer is as done as it gets */
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#define INUSE 0x20 /* The scsi_xfer block is in use */
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#define SCSI_SILENT 0x40 /* Don't report errors to console */
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#define SCSI_ERR_OK 0x80 /* An error on this operation is OK. */
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#define SCSI_RESET 0x100 /* Reset the device in question */
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#define SCSI_DATA_UIO 0x200 /* The data address refers to a UIO */
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#define SCSI_DATA_IN 0x400 /* expect data to come INTO memory */
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#define SCSI_DATA_OUT 0x800 /* expect data to flow OUT of memory */
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#define SCSI_TARGET 0x1000 /* This defines a TARGET mode op. */
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#define SCSI_ESCAPE 0x2000 /* Escape operation */
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/*************************************************************************/
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/* Escape op codes. This provides an extensible setup for operations */
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/* that are not scsi commands. They are intended for modal operations. */
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/*************************************************************************/
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#define SCSI_OP_TARGET 0x0001
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#define SCSI_OP_RESET 0x0002
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#define SCSI_OP_BDINFO 0x0003
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/********************************/
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/* Error values */
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/********************************/
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#define XS_NOERROR 0x0 /* there is no error, (sense is invalid) */
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#define XS_SENSE 0x1 /* Check the returned sense for the error */
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#define XS_DRIVER_STUFFUP 0x2 /* Driver failed to perform operation */
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#define XS_TIMEOUT 0x03 /* The device timed out.. turned off? */
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#define XS_SWTIMEOUT 0x04 /* The Timeout reported was caught by SW */
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#define XS_BUSY 0x08 /* The device busy, try again later? */
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