T1024 PCIe Configuration read error

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T1024 PCIe Configuration read error

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abineshselvaraj
Contributor III

Hi,

We try to connect T1024 RDB and Marvell Switch Reference Board in PCIe interface (PCIe controller 2). The  switch is enumerated in T1024 and the vendor/device id of switch is listed in "lspci" command. While we try to access the config space in /sys/bus/pci/devices/0002:05:00.0/config from linux prompt, the following error message is shown,

#cat /sys/bus/pci/devices/0002\:05\:00.0/config
PCIe error(s) detected
PCIe ERR_DR register: 0x00400000
PCIe ERR_CAP_STAT register: 0x80000001
PCIe ERR_CAP_R0 register: 0x00000800
PCIe ERR_CAP_R1 register: 0x00000000
PCIe ERR_CAP_R2 register: 0x00000000
PCIe ERR_CAP_R3 register: 0x00000000

It is understood from the T1024 RM that, the 0x00400000 in ERR_DR register is due to OAC (Outbound ATMU crossing). Please mention the possible reasons for this error.

Thanks,

S.Abinesh.

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tachyon11
Contributor I

I have the same error on T2080.

(T2080 : Question for PCIE errors )

Can you share the possible reasons for this error ?

Is there any other update ?

Regards

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