On 02/26/2015 09:46 AM, Bjorn Helgaas wrote:
On Thu, Feb 26, 2015 at 12:22:42AM -0800, Alnie wrote:
I just compiled this but I'm a bit unfamiliar, sorry :( It is giving
me "mmap error". Is this the what you are looking for?
./mem -N -m -s 0xf4000000
./mem: request seek to 4093640704, but -201326592 returned
4093640704 (unsigned) = 0xf4000000, -201326592 (signed) = 0xf4000000,
so this might be OK.
F4000000:FF
That's the sort of thing I was looking for, but the mmap error concerns me,
so I'm not confident that this tells us anything. Also, we should look at
more of the space to make sure that we get 0xff when reading *anything* on
the device.
05:00.0 PCI bridge: Creative Labs [SB X-Fi Xtreme Audio] CA0110-IBG
PCI to PCIe Bridge (prog-if 00 [Normal decode])
Interesting. The description looks backwards -- this is a PCIe to PCI
bridge, not the other way around. I posted a fix for that at
https://pci-ids.ucw.cz/read/PC/1102/7006?action=list
Physical Slot: 3
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, Cache Line Size: 64 bytes
Bus: primary=05, secondary=06, subordinate=0c, sec-latency=36
Memory behind bridge: f4300000-f43fffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Bridge: PM- B3+
Capabilities: [60] MSI: Enable- Count=1/16 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [80] Subsystem: Creative Labs Device 0040
Capabilities: [90] Express (v1) PCI-Express to PCI/PCI-X Bridge, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0
ExtTag- AttnBtn- AttnInd- PwrInd- RBE-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ BrConfRtry-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr- TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit
Latency L0s <512ns, L1 <16us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq+ ACSViol-
This looks suspicious: the bridge logged an Unsupported Request error.
Let's see if we can figure out if this error is left there by BIOS or if
the PCI core or the driver or rdwrmem is doing something that causes it.
Can you try this:
- Boot without the snd_hda_intel driver at all
- Collect "lspci -vvs05:00.0" output
blacklist snd_hda_intel
05:00.0 PCI bridge: Creative Labs [SB X-Fi Xtreme Audio] CA0110-IBG PCI
to PCIe Bridge (prog-if 00 [Normal decode])
Physical Slot: 3
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, Cache Line Size: 64 bytes
Bus: primary=05, secondary=06, subordinate=0c, sec-latency=36
Memory behind bridge: f4300000-f43fffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Bridge: PM- B3+
Capabilities: [60] MSI: Enable- Count=1/16 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [80] Subsystem: Creative Labs Device 0040
Capabilities: [90] Express (v1) PCI-Express to PCI/PCI-X Bridge, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0
ExtTag- AttnBtn- AttnInd- PwrInd- RBE-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ BrConfRtry-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr- TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency
L0s <512ns, L1 <16us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq+ ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+
MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
AERCap: First Error Pointer: 14, GenCap+ CGenEn- ChkCap+ ChkEn-
- Load snd_hda_intel
- Collect "lspci -vvs05:00.0" output
sudo modprobe snd-hda-intel
05:00.0 PCI bridge: Creative Labs [SB X-Fi Xtreme Audio] CA0110-IBG PCI
to PCIe Bridge (prog-if 00 [Normal decode])
Physical Slot: 3
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, Cache Line Size: 64 bytes
Bus: primary=05, secondary=06, subordinate=0c, sec-latency=36
Memory behind bridge: f4300000-f43fffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Bridge: PM- B3+
Capabilities: [60] MSI: Enable- Count=1/16 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [80] Subsystem: Creative Labs Device 0040
Capabilities: [90] Express (v1) PCI-Express to PCI/PCI-X Bridge, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0
ExtTag- AttnBtn- AttnInd- PwrInd- RBE-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ BrConfRtry-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr- TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency
L0s <512ns, L1 <16us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq+ ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+
MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
AERCap: First Error Pointer: 14, GenCap+ CGenEn- ChkCap+ ChkEn-
(output looks identical)
- Poke around with rdwr
(I am unfamiliar with this & hex, was trying different things, please
correct me in case)
# ./mem -N -m -s 0xf4300000
./mem: request seek to 4096786432, but -198180864 returned
F4300000:00
# ./mem -N -m -s f4300000
00000000:53
# ./mem -N -m -s f4310000
00000000:53
# ./mem -N -m -s 0xf4310000
./mem: request seek to 4096851968, but -198115328 returned
F4310000:FF
- Collect "lspci -vvs05:00.0" output
05:00.0 PCI bridge: Creative Labs [SB X-Fi Xtreme Audio] CA0110-IBG PCI
to PCIe Bridge (prog-if 00 [Normal decode])
Physical Slot: 3
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, Cache Line Size: 64 bytes
Bus: primary=05, secondary=06, subordinate=0c, sec-latency=36
Memory behind bridge: f4300000-f43fffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Bridge: PM- B3+
Capabilities: [60] MSI: Enable- Count=1/16 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [80] Subsystem: Creative Labs Device 0040
Capabilities: [90] Express (v1) PCI-Express to PCI/PCI-X Bridge, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0
ExtTag- AttnBtn- AttnInd- PwrInd- RBE-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ BrConfRtry-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr- TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency
L0s <512ns, L1 <16us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq+ ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+
MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
AERCap: First Error Pointer: 14, GenCap+ CGenEn- ChkCap+ ChkEn-
(output looks identical again)
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