Ongoing U320 AIC7902 Seagate ST318453LW issues, SCB timed out

[Don Bowman]

So i still get the below card state dump CB time out messages
with tags forced to 32. I'm pursuing this with Seagate, but
I'll ask again... is this a bug with either the AIC7902, or
the driver for it, or the cam layer, or something?

The AIC7902 is: card=0x005f9005 chip=0x801f9005

# camcontrol devlist
<SEAGATE ST318453LW 0005>          at scbus0 target 0 lun 0 (pass0,da0)
# camcontrol tags 0:0:0
(pass0:ahd0:0:0:0): device openings: 32
# camcontrol inq 0:0:0
pass0: <SEAGATE ST318453LW 0005> Fixed Direct Access SCSI-3 device 
pass0: Serial Number 3JY0FVNT00007343D27D
pass0: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged Queueing
Enabled

(da0:ahd0:0:0:0): SCB 0x1a - timed out
>>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
ahd0: Dumping Card State at program address 0x27 Mode 0x22
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[0x0] SEQ_FLAGS2[0x0] SSTAT0[0x0]
SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x8]:(AIPERR)
SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) LQISTAT0[0x0]
LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0] LQOSTAT1[0x0]
LQOSTAT2[0x1]:(LQOSTOP0)

SCB Count = 32 CMDS_PENDING = 14 LASTSCB 0x7 CURRSCB 0x7 NEXTSCB 0xff80
qinstart = 29946 qinfifonext = 29946
QINFIFO:
WAITING_TID_QUEUES:
Pending list:
  7 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
  1 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 24 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 27 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 18 FIFO_USE[0x0] SCB_CONTROL[0x62]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 31 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 10 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 20 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 28 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
  4 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 17 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 21 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 25 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
 26 FIFO_USE[0x0] SCB_CONTROL[0x60]:(TAG_ENB|DISCENB) SCB_SCSIID[0x7]
Total 14
Kernel Free SCB list: 16 30 19 15 13 11 8 9 5 2 23 29 0 14 6 3 22 12
Sequencer Complete DMA-inprog list:
Sequencer Complete list:
Sequencer DMA-Up and Complete list:

ahd0: FIFO0 Free, LONGJMP == 0x80ff, SCB 0x4
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 == 0x8257, SCB 0x1a
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)
LQIN: 0x55 0x0 0x0 0x1a 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x80 0x0 0x0
0x0 0x2 0x0
ahd0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x42
ahd0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x1
  
SIMODE0[0xc]:(ENOVERRUN|ENIOERR)
CCSCBCTL[0x4]:(CCSCBDIR)
ahd0: REG0 == 0x7, SINDEX = 0x122, DINDEX = 0x102
ahd0: SCBPTR == 0x1, SCB_NEXT == 0x7, SCB_NEXT2 == 0xff34
CDB a 5 b1 9f 20 0
STACK: 0x15 0x125 0x0 0x0 0x257 0x257 0x240 0x29
<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
swap_pager: indefinite wait buffer: device: #da/0x30001, blkno: 8536, size:
4096
Copied 18 bytes of sense data offset 12: 0x70 0x0 0x6 0x0 0x0 0x0 0x0 0xa
0x0 0x0 0x0 0x0 0x29 0x2 0x2 0x0 0x0 0x0
Aug  6 16:53:22  /kernel: <<<<<<<<<<<<<<<< Dump Card State Ends
>>>>>>>>>>>>>>>>>>
  
Message from syslogd@ at Wed Aug  6 16:53:22 2003 ...
 /kernel: <<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>