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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | /* * 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 */ |