Ongoing U320 AIC7902 Seagate ST318453LW issues, SCB timed out

[Don Bowman]

FWIW I've been able to reproduce this with a U160 device, a
ST318452LW:

# 
# camcontrol devlist
<SEAGATE ST318452LW 0004>          at scbus0 target 0 lun 0 (pass0,da0)

# camcontrol inq 0:0:0
pass0: <SEAGATE ST318452LW 0004> Fixed Direct Access SCSI-3 device 
pass0: Serial Number 3EV02CLF00007236P39P
pass0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled

I've not (yet) been able to reproduce this with a Fujitsu MAS3184NP.

(da0:ahd0:0:0:0): SCB 0x0 - timed out
>>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
ahd0: Dumping Card State at program address 0xf Mode 0x33
Card was paused
HS_MAILBOX[0x0] INTCTL[0xc0]:(SWTMINTEN|SWTMINTMASK)
SEQINTSTAT[0x0] SAVED_MODE[0x11]
DFFSTAT[0x31]:(CURRFIFO_1|FIFO0FREE|FIFO1FREE)
SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x10]:(FASTMODE)
SEQINTCTL[0x0] SEQ_FLAGS[0xc0]:(NO_CDB_SENT|NOT_IDENTIFIED)
SEQ_FLAGS2[0x0] SSTAT0[0x0] SSTAT1[0x8]:(BUSFREE)
SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO)
LQISTAT0[0x0] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0]
LQOSTAT1[0x0] LQOSTAT2[0x0]
  
SCB Count = 32 CMDS_PENDING = 13 LASTSCB 0xb CURRSCB 0xb NEXTSCB 0x0
qinstart = 3784 qinfifonext = 3784
QINFIFO:
WAITING_TID_QUEUES:
Pending list:
 11 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
  3 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
 15 FIFO_USE[0x0] SCB_CONTROL[0x66]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
  7 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
 28 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
  2 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
 30 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
  6 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
 25 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
 23 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
 27 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
  8 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
  0 FIFO_USE[0x0] SCB_CONTROL[0x64]:(DISCONNECTED|TAG_ENB|DISCENB)
SCB_SCSIID[0x7]
Total 13
Kernel Free SCB list: 22 9 20 10 14 31 17 16 13 18 29 26 4 5 19 1 12 21 24
Sequencer Complete DMA-inprog list:
Sequencer Complete list:
Sequencer DMA-Up and Complete list:
  
ahd0: FIFO0 Free, LONGJMP == 0x80ff, SCB 0x0
SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENS
AVEPTRS)
SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
ahd0: FIFO1 Free, LONGJMP == 0x81ec, SCB 0xb
SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENS
AVEPTRS)
SEQINTSRC[0x0] DFCNTRL[0x4]:(DIRECTION)
DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0
ahd0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x42
ahd0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
  
SIMODE0[0xc]:(ENOVERRUN|ENIOERR)
CCSCBCTL[0x4]:(CCSCBDIR)
ahd0: REG0 == 0xb, SINDEX = 0x133, DINDEX = 0xe1
ahd0: SCBPTR == 0xb, SCB_NEXT == 0xff00, SCB_NEXT2 == 0xff34
CDB a 5 b1 9f 20 0
STACK: 0x0 0x0 0x0 0x0 0x225 0x225 0x29 0x1
<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
swap_pager: indefinite wait buffer: device: #da/0x30001, blkno: 10640, size:
4096 
swap_pager: indefinite wait buffer: device: #da/0x30001, blkno: 7336, size:
4096
Aug  8 10:14:19  /kernel: <<<<<<<<<<<<<<<< Dump Card State Ends
>>>>>>>>>>>>>>>>>>
  
Message from syslogd@ at Fri Aug  8 10:14:19 2003 ...
 /kernel: <<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>