Bug Report 2.4.20: Interrupt sharing bogus

Stephan von Krawczynski
2002-12-11T18:47:39Z

Hello all,

It took me several days to find out this pretty simple sounding problem:
I have a stock 2.4.20 on a PIII-box with SIS chipset (lspci below), adaptec
U160-type controller and tulip-based 4-port ethernet card.
_If_ I use an ethernet port with same irq like adaptec controller, the system
goes instable and both components go crazy. Ethernet connections break down,
reading and writing from/to hd gives errors. The problem is reproducable with
another hardware with same components and even with a different (sundance)
4-port ethernet card. For tests I simply copy a lot of files via NFS to the
local hd. It always freezes the machine, not always ad-hoc, but within short.
I checked with 2.4.19 - same problem.
I can test patches on this, no production machine involved. Any hints appreciated.

lspci -vv:

00:00.0 Host bridge: Silicon Integrated Systems [SiS] 630 Host (rev 30)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
Latency: 32
Region 0: Memory at d8000000 (32-bit, non-prefetchable) [size=64M]
Capabilities: [c0] AGP version 2.0
Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2,x4
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=x4

00:00.1 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev d0) (prog-if 8a [Master SecP PriP])
Subsystem: Silicon Integrated Systems [SiS] SiS5513 EIDE Controller (A,B step)
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 0
Region 0: I/O ports at <ignored> [disabled]
Region 1: I/O ports at <ignored> [disabled]
Region 2: I/O ports at <ignored> [disabled]
Region 3: I/O ports at <ignored> [disabled]
Region 4: I/O ports at 4000 [disabled] [size=16]

00:01.0 ISA bridge: Silicon Integrated Systems [SiS] 85C503/5513
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0

00:01.1 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 10/100 Ethernet (rev 84)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (13000ns min, 2750ns max)
Interrupt: pin C routed to IRQ 14
Region 0: I/O ports at c000 [size=256]
Region 1: Memory at e1102000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=160mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable+ DSel=0 DScale=0 PME-

00:02.0 PCI bridge: Silicon Integrated Systems [SiS] 5591/5592 AGP (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00009000-00009fff
Memory behind bridge: e1000000-e10fffff
Prefetchable memory behind bridge: d0000000-d7ffffff
BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-

00:12.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32, cache line size 08
Bus: primary=00, secondary=02, subordinate=02, sec-latency=32
I/O behind bridge: 0000a000-0000afff
Memory behind bridge: dd000000-deffffff
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=220mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Bridge: PM- B3+

00:13.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32, cache line size 08
Bus: primary=00, secondary=03, subordinate=03, sec-latency=32
I/O behind bridge: 0000b000-0000bfff
Memory behind bridge: df000000-e0ffffff
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=220mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Bridge: PM- B3+

01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] SiS630 GUI Accelerator+3D (rev 21) (prog-if 00 [VGA])
Subsystem: Silicon Integrated Systems [SiS] SiS630 GUI Accelerator+3D
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
BIST result: 00
Region 0: Memory at d0000000 (32-bit, prefetchable) [size=128M]
Region 1: Memory at e1000000 (32-bit, non-prefetchable) [size=128K]
Region 2: I/O ports at 9000 [size=128]
Capabilities: [40] Power Management version 1
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] AGP version 2.0
Status: RQ=15 SBA+ 64bit- FW- Rate=x1,x2,x4
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>

02:04.0 SCSI storage controller: Adaptec AIC-7892A U160/m (rev 02)
Subsystem: Adaptec 29160 Ultra160 SCSI Controller
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (10000ns min, 6250ns max), cache line size 08
Interrupt: pin A routed to IRQ 15
BIST result: 00
Region 0: I/O ports at a000 [disabled] [size=256]
Region 1: Memory at de011000 (64-bit, non-prefetchable) [size=4K]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

02:06.0 Network controller: Siemens Nixdorf AG DSCC4 WAN adapter (rev 21)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (750ns min, 2500ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at de010000 (32-bit, non-prefetchable) [size=2K]
Region 1: Memory at de000000 (32-bit, non-prefetchable) [size=64K]

02:07.0 Network controller: AVM Audiovisuelles MKTG & Computer System GmbH Fritz!PCI v2.0 ISDN (rev 01)
Subsystem: AVM Audiovisuelles MKTG & Computer System GmbH Fritz!PCI v2.0 ISDN
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 14
Region 0: Memory at de012000 (32-bit, non-prefetchable) [size=32]
Region 1: I/O ports at a400 [size=32]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI- D1- D2+ AuxCurrent=0mA PME(D0-,D1-,D2+,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

03:04.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41)
Subsystem: D-Link System Inc: Unknown device 1132
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (5000ns min, 10000ns max), cache line size 08
Interrupt: pin A routed to IRQ 14
Region 0: I/O ports at b000 [size=128]
Region 1: Memory at e0000000 (32-bit, non-prefetchable) [size=1K]
Expansion ROM at <unassigned> [disabled] [size=256K]

03:05.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41)
Subsystem: D-Link System Inc: Unknown device 1132
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (5000ns min, 10000ns max), cache line size 08
Interrupt: pin A routed to IRQ 15
Region 0: I/O ports at b400 [size=128]
Region 1: Memory at e0001000 (32-bit, non-prefetchable) [size=1K]
Expansion ROM at <unassigned> [disabled] [size=256K]

03:06.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41)
Subsystem: D-Link System Inc: Unknown device 1132
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (5000ns min, 10000ns max), cache line size 08
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at b800 [size=128]
Region 1: Memory at e0002000 (32-bit, non-prefetchable) [size=1K]
Expansion ROM at <unassigned> [disabled] [size=256K]

03:07.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41)
Subsystem: D-Link System Inc: Unknown device 1132
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (5000ns min, 10000ns max), cache line size 08
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at bc00 [size=128]
Region 1: Memory at e0003000 (32-bit, non-prefetchable) [size=1K]
Expansion ROM at <unassigned> [disabled] [size=256K]

--
Regards,
Stephan