1 What: /sys/bus/dfl/devices/dfl_dev.X 1 What: /sys/bus/dfl/devices/dfl_dev.X/fec_mode
2 Date: Oct 2020 2 Date: Oct 2020
3 KernelVersion: 5.12 3 KernelVersion: 5.12
4 Contact: Xu Yilun <yilun.xu@intel.com> 4 Contact: Xu Yilun <yilun.xu@intel.com>
5 Description: Read-only. Returns the FEC mod 5 Description: Read-only. Returns the FEC mode of the 25G links of the
6 ethernet retimers configured b 6 ethernet retimers configured by Nios firmware. "rs" for Reed
7 Solomon FEC, "kr" for Fire Cod 7 Solomon FEC, "kr" for Fire Code FEC, "no" for NO FEC.
8 "not supported" if the FEC mod 8 "not supported" if the FEC mode setting is not supported, this
9 happens when the Nios firmware 9 happens when the Nios firmware version major < 3, or no link is
10 configured to 25G. 10 configured to 25G.
11 Format: string 11 Format: string
12 12
13 What: /sys/bus/dfl/devices/dfl_dev.X 13 What: /sys/bus/dfl/devices/dfl_dev.X/retimer_A_mode
14 Date: Oct 2020 14 Date: Oct 2020
15 KernelVersion: 5.12 15 KernelVersion: 5.12
16 Contact: Xu Yilun <yilun.xu@intel.com> 16 Contact: Xu Yilun <yilun.xu@intel.com>
17 Description: Read-only. Returns the enumera 17 Description: Read-only. Returns the enumeration value of the working mode of
18 the retimer A configured by th 18 the retimer A configured by the Nios firmware. The value is
19 read out from shared registers 19 read out from shared registers filled by the Nios firmware. Now
20 the values could be: 20 the values could be:
21 21
22 - "0": Reset 22 - "0": Reset
23 - "1": 4x10G 23 - "1": 4x10G
24 - "2": 4x25G 24 - "2": 4x25G
25 - "3": 2x25G 25 - "3": 2x25G
26 - "4": 2x25G+2x10G 26 - "4": 2x25G+2x10G
27 - "5": 1x25G 27 - "5": 1x25G
28 28
29 If the Nios firmware is update 29 If the Nios firmware is updated in future to support more
30 retimer modes, more enumeratio 30 retimer modes, more enumeration value is expected.
31 Format: 0x%x 31 Format: 0x%x
32 32
33 What: /sys/bus/dfl/devices/dfl_dev.X 33 What: /sys/bus/dfl/devices/dfl_dev.X/retimer_B_mode
34 Date: Oct 2020 34 Date: Oct 2020
35 KernelVersion: 5.12 35 KernelVersion: 5.12
36 Contact: Xu Yilun <yilun.xu@intel.com> 36 Contact: Xu Yilun <yilun.xu@intel.com>
37 Description: Read-only. Returns the enumera 37 Description: Read-only. Returns the enumeration value of the working mode of
38 the retimer B configured by th 38 the retimer B configured by the Nios firmware. The value format
39 is the same as retimer_A_mode. 39 is the same as retimer_A_mode.
40 40
41 What: /sys/bus/dfl/devices/dfl_dev.X 41 What: /sys/bus/dfl/devices/dfl_dev.X/nios_fw_version
42 Date: Oct 2020 42 Date: Oct 2020
43 KernelVersion: 5.12 43 KernelVersion: 5.12
44 Contact: Xu Yilun <yilun.xu@intel.com> 44 Contact: Xu Yilun <yilun.xu@intel.com>
45 Description: Read-only. Returns the version 45 Description: Read-only. Returns the version of the Nios firmware in the
46 FPGA. Its format is "major.min 46 FPGA. Its format is "major.minor.patch".
47 Format: %x.%x.%x 47 Format: %x.%x.%x
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