Hello,
I recently added a Hauppauge WinTV Nova-HD-S2 into a Linux system.
I experience frequent packet loss and pci_abort errors.
Each time my application detects packet loss (continuity errors
actually),
I get the following messages in dmesg:
cx88[0]: irq mpeg [0x80000] pci_abort*
cx88[0]/2-mpeg: general errors: 0x00080000
Such problems occur every few seconds.
I use firmware file dvb-fe-cx24116.fw version 1.26.90.0.
Since the IRQ was shared with the nVidia card and a Dektec modulator,
I swapped some PCI boards. The IRQ is still shared but with another
tuner
I do not use when using the S2 tuner. After swapping the PCI boards,
the errors occur less frequently but still happen.
Assuming that the pci_abort was due to an interrupted DMA transfer, I
tried to increase the PCI latency timer of the device to 248 but this
did not change anything (setpci -s 05:05 latency_timer=f8).
I use the tuner with a custom application which reads the complete
transport
stream. This application had worked for years using DVB-T and DVB-S
tuners.
I tried to reduce the application read buffer input size and it did not
change anything at all.
Note that my application still uses the V3 API, not the S2API. But,
using
DVB-S transponders, it works (except the pci_abort errors).
I disabled the serial port, the parallel port and the PS/2 ports in the
BIOS.
It did not change anything either.
Does anyone have an idea, please?
Thanks a lot in advance for any help.
-Thierry
PS: some additional information:
# lspci -v -s 05:05
05:05.0 Multimedia video controller: Conexant Systems, Inc.
CX23880/1/2/3 PCI Video and Audio Decoder (rev 05)
Subsystem: Hauppauge computer works Inc. Device 6906
Flags: bus master, medium devsel, latency 248, IRQ 17
Memory at f5000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [44] Vital Product Data
Capabilities: [4c] Power Management version 2
Kernel driver in use: cx8800
Kernel modules: cx8800
05:05.1 Multimedia controller: Conexant Systems, Inc. CX23880/1/2/3 PCI
Video and Audio Decoder [Audio Port] (rev 05)
Subsystem: Hauppauge computer works Inc. Device 6906
Flags: bus master, medium devsel, latency 248, IRQ 17
Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2
Kernel driver in use: cx88_audio
Kernel modules: cx88-alsa
05:05.2 Multimedia controller: Conexant Systems, Inc. CX23880/1/2/3 PCI
Video and Audio Decoder [MPEG Port] (rev 05)
Subsystem: Hauppauge computer works Inc. Device 6906
Flags: bus master, medium devsel, latency 248, IRQ 17
Memory at f7000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2
Kernel driver in use: cx88-mpeg driver manager
Kernel modules: cx8802
05:05.4 Multimedia controller: Conexant Systems, Inc. CX23880/1/2/3 PCI
Video and Audio Decoder [IR Port] (rev 05)
Subsystem: Hauppauge computer works Inc. Device 6906
Flags: bus master, medium devsel, latency 248, IRQ 10
Memory at f8000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2
# cat /proc/interrupts
CPU0 CPU1
0: 296 4 IO-APIC-edge timer
1: 1 2 IO-APIC-edge i8042
8: 1 0 IO-APIC-edge rtc0
9: 0 0 IO-APIC-fasteoi acpi
16: 279 122104 IO-APIC-fasteoi uhci_hcd:usb4,
uhci_hcd:usb10, HDA Intel, Dta1xx, nvidia
17: 1863 507353 IO-APIC-fasteoi uhci_hcd:usb5,
uhci_hcd:usb8, uhci_hcd:usb11, cx88[0], cx88[0], cx88[0]
18: 130224 8533 IO-APIC-fasteoi ehci_hcd:usb3,
uhci_hcd:usb9
22: 0 0 IO-APIC-fasteoi ehci_hcd:usb1,
uhci_hcd:usb6
23: 170156 246 IO-APIC-fasteoi ehci_hcd:usb2,
uhci_hcd:usb7
28: 57235 4517 PCI-MSI-edge ahci
29: 69 15965 PCI-MSI-edge eth0
NMI: 0 0 Non-maskable interrupts
LOC: 2529023 2281329 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 0 0 Performance monitoring interrupts
PND: 0 0 Performance pending work
RES: 42023 29529 Rescheduling interrupts
CAL: 123 994 Function call interrupts
TLB: 150508 136321 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 16 16 Machine check polls
ERR: 1
MIS: 0
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