On Fri, 2008-08-29 at 15:01 -0400, Andy Walls wrote:
> Hi all,
>
> I have a question.
>
> For users of HVR-1600 and other CX23418 based cards that basically work:
> is your card behind a PCI-PCI bridge chip that is set for "subtractive
> decode"?
Hope this is what you are after:
# lspci -tvv
-[0000:00]-+-00.0 nVidia Corporation nForce3 250Gb Host Bridge
+-01.0 nVidia Corporation nForce3 250Gb LPC Bridge
+-01.1 nVidia Corporation nForce 250Gb PCI System Management
+-02.0 nVidia Corporation CK8S USB Controller
+-02.1 nVidia Corporation CK8S USB Controller
+-02.2 nVidia Corporation nForce3 EHCI USB 2.0 Controller
+-05.0 nVidia Corporation CK8S Ethernet Controller
+-06.0 nVidia Corporation nForce3 250Gb AC'97 Audio Controller
+-08.0 nVidia Corporation CK8S Parallel ATA Controller (v2.5)
+-0a.0 nVidia Corporation CK8S Serial ATA Controller (v2.5)
+-0b.0-[0000:01]----00.0 nVidia Corporation G70 [GeForce 7800 GS]
+-0e.0-[0000:02]--+-07.0 Internext Compression Inc iTVC16 (CX23416)
MPEG-2 Encoder
| +-08.0 Creative Labs SB Live! EMU10k1
| +-08.1 Creative Labs SB Live! Game Port
| +-0a.0 Conexant CX23418 Single-Chip MPEG-2
Encoder with Integrated Analog Video/Broadcast Audio Decoder
| +-0b.0 Marvell Technology Group Ltd. 88E8001
Gigabit Ethernet Controller
| +-0d.0 Silicon Image, Inc. SiI 3512
[SATALink/SATARaid] Serial ATA Controller
| \-0e.0 Texas Instruments TSB82AA2 IEEE-1394b Link
Layer Controller
+-18.0 Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
HyperTransport Technology Configuration
+-18.1 Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address
Map
+-18.2 Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM
Controller
\-18.3 Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Miscellaneous Control
# lspci -s 0:0e.0 -vv -x
00:0e.0 PCI bridge: nVidia Corporation nForce3 250Gb PCI-to-PCI Bridge (rev a2)
(prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=128
I/O behind bridge: 00009000-0000afff
Memory behind bridge: d8000000-dfffffff
Prefetchable memory behind bridge: e0000000-e3ffffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR+
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Kernel modules: shpchp
00: de 10 ed 00 07 01 a0 00 a2 00 04 06 00 00 01 00
10: 00 00 00 00 00 00 00 00 00 02 02 80 90 a0 80 a2
20: 00 d8 f0 df 00 e0 f0 e3 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06 00
>
> For users of HVR-1600 and other CX23418 based cards that basically don't
> work: Is your card behind a not behind a PCI-PCI bridge chip that is set
> for "subtractive decode" (i.e. directly behind a host bridge, or behind
> a PCI-PCI bridge set for positive decode)?
>
>
> Here's an example, run as root, showing how to see if you have the
> CX23418 behind a PCI-PCI bridge set for subtractive decode:
>
> # lspci -tvv
> -[0000:00]-+-00.0 ATI Technologies Inc Unknown device 7911
> +-01.0-[0000:01]----05.0 ATI Technologies Inc Radeon 2100
> [...]
> +-14.4-[0000:03]--+-02.0 Internext Compression Inc iTVC16
> (CX23416) MPEG-2 Encoder
> | \-03.0 Conexant CX23418 Single-Chip MPEG-2
> Encoder with Integrated Analog Video/Broadcast Audio Decoder
> [...]
>
> >From the tree view above, we see the CX23418 is behind the bridge at
> 00:14.4.
>
> # lspci -s 0:14.4 -vv -x
> 00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge (prog-if 01
> [Subtractive decode])
>
> ^^^^^^^^^^^^^^^^^^^^^^^
> [...]
> 00: 02 10 84 43 07 01 a0 02 00 01 04 06 00 40 81 00
> ^^^^^^^^
> ||
> Subtractive Decode PCI-PCI ----++
> [...]
>
> Here we see in the first text line for the bridge, lspci has shown us
> its a PCI-PCI bridge in subtractive decode. This could also be read off
> of bytes 09x-0xb of the configuration space. The byte at 0x9 being 1
> indicate subtractive decode vs positive decode.
>
>
>
> Thanks in advance for your responses.
>
> Regards,
> Andy
>
>
>
>
>
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