On 01/07/2008 09:30, Keir Fraser wrote:
What does lspci say the resource areas are for this device?
Are you asking for anything more than "lspci -vvv" output?
When the card is loaded in dom0 (before I unload the drivers and assign
the slot to pciback) I see this
08:01.0 Multimedia controller: Philips Semiconductors SAA7130 Video
Broadcast Decoder (rev 01)
Subsystem: Compro Technology, Inc. Videomate DVB-T200
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium
>TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (21000ns min, 8000ns max)
Interrupt: pin A routed to IRQ 17
Region 0: Memory at febffc00 (32-bit, non-prefetchable) [size=1K]
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=1 PME-
Kernel modules: saa7134
When assigned to pciback/pcifront, from within the domU I see this
00:00.0 Multimedia controller: Philips Semiconductors SAA7130 Video
Broadcast Decoder (rev 01)
Subsystem: Compro Technology, Inc. Videomate DVB-T200
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 (21000ns min, 8000ns max)
Interrupt: pin A routed to IRQ 17
Region 0: Memory at febffc00 (32-bit, non-prefetchable) [size=1K]
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=1 PME-
It looks like fec00000 is past the end of the device's mmio region.
Well 0xFEBFFC00 + 1K = 0xFEC00000, is this some sort of off-by-one
error, where it should only extend to 0xFEBFFFFF?
Is it worth me attempting a change in the driver code from
dev->lmmio = ioremap(pci_resource_start(pci_dev,0), 0x1000);
to
dev->lmmio = ioremap(pci_resource_start(pci_dev,0), 0xFFF);
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