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/*
* scsi_obsolete.h Copyright (C) 1997 Eric Youngdale
*
*/
#ifndef _SCSI_OBSOLETE_H
#define _SCSI_OBSOLETE_H
/*
* These are the return codes for the abort and reset functions. The mid-level
* code uses these to decide what to do next. Each of the low level abort
* and reset functions must correctly indicate what it has done.
* The descriptions are written from the point of view of the mid-level code,
* so that the return code is telling the mid-level drivers exactly what
* the low level driver has already done, and what remains to be done.
*/
/* We did not do anything.
* Wait some more for this command to complete, and if this does not work,
* try something more serious. */
#define SCSI_ABORT_SNOOZE 0
/* This means that we were able to abort the command. We have already
* called the mid-level done function, and do not expect an interrupt that
* will lead to another call to the mid-level done function for this command */
#define SCSI_ABORT_SUCCESS 1
/* We called for an abort of this command, and we should get an interrupt
* when this succeeds. Thus we should not restore the timer for this
* command in the mid-level abort function. */
#define SCSI_ABORT_PENDING 2
/* Unable to abort - command is currently on the bus. Grin and bear it. */
#define SCSI_ABORT_BUSY 3
/* The command is not active in the low level code. Command probably
* finished. */
#define SCSI_ABORT_NOT_RUNNING 4
/* Something went wrong. The low level driver will indicate the correct
* error condition when it calls scsi_done, so the mid-level abort function
* can simply wait until this comes through */
#define SCSI_ABORT_ERROR 5
/* We do not know how to reset the bus, or we do not want to. Bummer.
* Anyway, just wait a little more for the command in question, and hope that
* it eventually finishes. If it never finishes, the SCSI device could
* hang, so use this with caution. */
#define SCSI_RESET_SNOOZE 0
/* We do not know how to reset the bus, or we do not want to. Bummer.
* We have given up on this ever completing. The mid-level code will
* request sense information to decide how to proceed from here. */
#define SCSI_RESET_PUNT 1
/* This means that we were able to reset the bus. We have restarted all of
* the commands that should be restarted, and we should be able to continue
* on normally from here. We do not expect any interrupts that will return
* DID_RESET to any of the other commands in the host_queue, and the mid-level
* code does not need to do anything special to keep the commands alive.
* If a hard reset was performed then all outstanding commands on the
* bus have been restarted. */
#define SCSI_RESET_SUCCESS 2
/* We called for a reset of this bus, and we should get an interrupt
* when this succeeds. Each command should get its own status
* passed up to scsi_done, but this has not happened yet.
* If a hard reset was performed, then we expect an interrupt
* for *each* of the outstanding commands that will have the
* effect of restarting the commands.
*/
#define SCSI_RESET_PENDING 3
/* We did a reset, but do not expect an interrupt to signal DID_RESET.
* This tells the upper level code to request the sense info, and this
* should keep the command alive. */
#define SCSI_RESET_WAKEUP 4
/* The command is not active in the low level code. Command probably
finished. */
#define SCSI_RESET_NOT_RUNNING 5
/* Something went wrong, and we do not know how to fix it. */
#define SCSI_RESET_ERROR 6
#define SCSI_RESET_SYNCHRONOUS 0x01
#define SCSI_RESET_ASYNCHRONOUS 0x02
#define SCSI_RESET_SUGGEST_BUS_RESET 0x04
#define SCSI_RESET_SUGGEST_HOST_RESET 0x08
/*
* This is a bitmask that is ored with one of the above codes.
* It tells the mid-level code that we did a hard reset.
*/
#define SCSI_RESET_BUS_RESET 0x100
/*
* This is a bitmask that is ored with one of the above codes.
* It tells the mid-level code that we did a host adapter reset.
*/
#define SCSI_RESET_HOST_RESET 0x200
/*
* Used to mask off bits and to obtain the basic action that was
* performed.
*/
#define SCSI_RESET_ACTION 0xff
#endif /* SCSI_OBSOLETE_H */
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