[PATCH] handle Toshiba deskstation PCI-PCI bridge

From: Eric G. Stern
Date: Mon Mar 22 2004 - 14:08:52 EST

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I have a Toshiba Tecra 750 CDM laptop mounted in a Toshiba docking station which has PCI slots. In all recent kernels the PCI-PCI bridge is not handled correctly and the PCI cards in the docking station are inaccessable because of PCI conflicts. The enclosed patch against kernel 2.6.4 fixes this in a manner similar to the fix for a PCMCIA issue in this device discussed here about a year ago.

These are the messages I get without this patch:

PCI: PCI BIOS revision 2.10 entry at 0xfd506, last bus=21
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Probing PCI hardware (bus 00)
PCI: Cannot allocate resource region 0 of device 01:01.0
PCI: Cannot allocate resource region 0 of device 01:0d.0
PCI: Cannot allocate resource region 1 of device 01:0d.0
PCI: Failed to allocate resource 0(0-7f) for 01:01.0
PCI: Failed to allocate resource 0(0-fff) for 01:04.0
PCI: Failed to allocate resource 0(0-fff) for 01:04.1
PCI: Failed to allocate resource 0(0-ff) for 01:0d.0
PCI: Failed to allocate resource 1(0-ff) for 01:0d.0

This is my lspci -v -v -v

00:00.0 Host bridge: Toshiba America Info Systems 601 (rev 2c)
Subsystem: Toshiba America Info Systems: Unknown device 0001
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, Cache Line Size: 0x08 (32 bytes)

00:02.0 CardBus bridge: Toshiba America Info Systems ToPIC97 (rev 03)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin A routed to IRQ 0
Region 0: Memory at 10000000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=14, subordinate=14, sec-latency=0
Memory window 0: 00000000-00000000
Memory window 1: 00000000-00000000
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite-
16-bit legacy interface ports at 0001

00:02.1 CardBus bridge: Toshiba America Info Systems ToPIC97 (rev 03)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin B routed to IRQ 0
Region 0: Memory at 10001000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=15, subordinate=15, sec-latency=0
Memory window 0: 00000000-00000000
Memory window 1: 00000000-00000000
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite-
16-bit legacy interface ports at 0001

00:03.0 ISA bridge: Toshiba America Info Systems: Unknown device 060e (rev 02)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-

00:04.0 VGA compatible controller: S3 Inc. ViRGE/MX (rev 06) (prog-if 00 [VGA])
Subsystem: Toshiba America Info Systems ViRGE/MX
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 (1000ns min, 63750ns max)
Region 0: Memory at f8000000 (32-bit, non-prefetchable) [size=64M]
Expansion ROM at 000c0000 [disabled] [size=64K]

00:06.0 PCI bridge: Toshiba America Info Systems: Unknown device 0609 (rev 04) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Bus: primary=00, secondary=01, subordinate=13, sec-latency=0
I/O behind bridge: 00000000-00000fff
Memory behind bridge: 00000000-000fffff
Prefetchable memory behind bridge: 00000000-000fffff
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-

00:0a.0 Communication controller: Toshiba America Info Systems FIR Port (rev 13)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at dfe0 [size=32]

00:0b.0 USB Controller: NEC Corporation USB (rev 02) (prog-if 10 [OHCI])
Subsystem: Toshiba America Info Systems USB
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: 64 (250ns min, 5250ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f7eff000 (32-bit, non-prefetchable) [size=4K]

00:0c.0 Multimedia video controller: Toshiba America Info Systems Tecra Video Capture device (rev 04)
Subsystem: Toshiba America Info Systems: Unknown device 0001
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: 64
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f7efef00 (32-bit, non-prefetchable) [size=256]

00:0d.0 Multimedia controller: Toshiba America Info Systems DVD Decoder card (Version 2) (rev 02)
Subsystem: Toshiba America Info Systems: Unknown device 0001
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: 64 (1000ns min, 32000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at de00 [size=256]

01:01.0 SCSI storage controller: Advanced Micro Devices [AMD] 53c974 [PCscsi] (rev 10)
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: 64 (1000ns min, 10000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at <ignored> [size=128]

01:04.0 CardBus bridge: Toshiba America Info Systems ToPIC95 (rev 87)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin A routed to IRQ 0
Region 0: Memory at <unassigned> (32-bit, non-prefetchable) [size=4K]
Bus: primary=01, secondary=12, subordinate=12, sec-latency=0
Memory window 0: 00000000-00000000
Memory window 1: 00000000-00000000
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite-

01:04.1 CardBus bridge: Toshiba America Info Systems ToPIC95 (rev 87)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin B routed to IRQ 0
Region 0: Memory at <unassigned> (32-bit, non-prefetchable) [size=4K]
Bus: primary=01, secondary=13, subordinate=13, sec-latency=0
Memory window 0: 00000000-00000000
Memory window 1: 00000000-00000000
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite-

01:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
Subsystem: Realtek Semiconductor Co., Ltd. RT8139
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: 64 (8000ns min, 16000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at <ignored> [size=256]
Region 1: Memory at <ignored> (32-bit, non-prefetchable) [size=256]
Expansion ROM at f7fe0000 [disabled] [size=64K]
Capabilities: [50] 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-

The unknown device 0609 is the one responsible for the problem.

Eric Stern

diff -rup linux-2.6.4.orig/drivers/pci/quirks.c linux/drivers/pci/quirks.c
--- linux-2.6.4.orig/drivers/pci/quirks.c 2004-03-18 12:14:29.000000000 -0600
+++ linux/drivers/pci/quirks.c 2004-03-18 12:16:58.000000000 -0600
@@ -957,6 +957,11 @@ static struct pci_fixup pci_fixups[] __d
*/
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge },
+ /* The PCI-PCI bridge in the toshiba deskstation needs to
+ * be marked transparent for PCI cards to be usable. The
+ * bridge ID is 0x609.
+ */
+ { PCI_FIXUP_HEADER, PCI_VENDOR_ID_TOSHIBA, 0x609, quirk_transparent_bridge },

{ PCI_FIXUP_FINAL, PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master },

Next message: Christoffer Hall-Frederiksen: "Re: True fsync() in Linux (on IDE)"
Previous message: Hugh Dickins: "Re: VMA_MERGING_FIXUP and patch"
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