| /* |
| * 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 */ |
