scsi_obsolete.h
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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 */