Some time ago I fitted a U320 SCSI controller into Sun Enterprise 3500 64-bit PCI IO board. It had some problems in dmesg and I attached the devices to other SCSI HBA-s since they were slower anyway. Now I resurrected the machine and found the error again. Maybe harmless - the HBA is found nevertheless. But here is the dmesg excerpt convering aic79xx. In /proc/interrupts, it registers as 60: 17 0 sun4u-IVEC aic79xx [20652.378133] scsi4: Missing case in ahd_handle_scsiint. status = 0 [20652.449005] >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<< [20652.449019] scsi4: Dumping Card State at program address 0x0 Mode 0x33 [20652.606312] Card was paused [20652.639646] INTSTAT[0x8]:(SCSIINT) SELOID[0x0] [20652.693814] SELID[0x0] HS_MAILBOX[0x0] INTCTL[0x0] [20652.752157] SEQINTSTAT[0x0] SAVED_MODE[0x25] [20652.804249] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE) [20652.874057] SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] [20652.934479] SCSIBUS[0x0] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) [20653.004286] SCSISEQ0[0x0] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) [20653.074091] SEQCTL0[0x0] SEQINTCTL[0x0] SEQ_FLAGS[0x0] [20653.136607] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0] [20653.190785] KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] [20653.259546] MK_MESSAGE_SCSIID[0xff] SSTAT0[0x0] [20653.314766] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] [20653.369986] PERRDIAG[0x0] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) [20653.451252] LQISTAT0[0x0] LQISTAT1[0x0] LQISTAT2[0x0] [20653.512722] LQOSTAT0[0x0] LQOSTAT1[0x0] LQOSTAT2[0x0] [20653.574208] [20653.574214] SCB Count = 8 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0 [20653.681548] qinstart = 0 qinfifonext = 0 [20653.681558] QINFIFO: [20653.752342] WAITING_TID_QUEUES: [20653.791957] Pending list: [20653.821106] Total 0 [20653.848206] Kernel Free SCB list: 7 6 5 4 3 2 1 0 [20653.905509] Sequencer Complete DMA-inprog list: [20653.960722] Sequencer Complete list: [20654.004485] Sequencer DMA-Up and Complete list: [20654.059701] Sequencer On QFreeze and Complete list: [20654.119105] [20654.119111] [20654.119117] scsi4: FIFO0 Free, LONGJMP == 0x803b, SCB 0x0 [20654.219126] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS) [20654.325383] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL) [20654.419148] SG_CACHE_SHADOW[0x2]:(LAST_SEG) [20654.470199] SG_STATE[0x0] DFFSXFRCTL[0x0] SOFFCNT[0x0] [20654.532712] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0 [20654.611910] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL) [20654.685865] [20654.685871] scsi4: FIFO1 Free, LONGJMP == 0x80ac, SCB 0x0 [20654.770281] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS) [20654.876534] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL) [20654.970297] SG_CACHE_SHADOW[0x2]:(LAST_SEG) [20655.021354] SG_STATE[0x0] DFFSXFRCTL[0x0] SOFFCNT[0x0] [20655.083866] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0 [20655.163061] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL) [20655.237004] LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 [20655.346420] scsi4: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52 [20655.422493] scsi4: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0 [20655.483962] scsi4: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0 [20655.544387] [20655.562088] SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO) [20655.631887] CCSCBCTL[0x0] [20655.664197] scsi4: REG0 == 0x45d9, SINDEX = 0x0, DINDEX = 0x0 [20655.732978] scsi4: SCBPTR == 0x1ff, SCB_NEXT == 0xff00, SCB_NEXT2 == 0x0 [20655.813200] CDB ff 1 0 0 0 0 [20655.847563] STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 [20655.902764] <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>> [20655.982290] scsi4 : Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 3.0 [20655.982303] <Adaptec 29320ALP PCIx Ultra320 SCSI adapter> [20655.982316] aic7901: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66MHz, 512 SCBs -- Meelis Roos (mroos@xxxxxxxx) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html