What is the meaning of instance_id and how to use them in the 10Gbps Ethernet (10GbE) AFU design example on Intel PAC arria10gx

Hello Sir/Madam,

I am running the 10Gbps Ethernet

(10GbE) AFU design example on Intel PAC arria10gx, following the document 10Gbps

Ethernet Accelerator Functional Unit Design Example User Guide.

I am confused about several instance_id mentioned in the document.

For example ,on page 9, there is description about the instance_id as below

To configure the transceiver channel into 10G mode, write 10 to the following

sysfs entry:

$ sudo sh -c "echo 10 > /sys/class/fpga/intel-fpga-dev.<instance_id>\

/intel-fpga-fme.<instance_id>/intel-pac-hssi.<instance_id>.\

auto/hssi_mgmt/config"

<instance_id> represents the consecutive numbering of device, fme, and hssi

instances.

For example:

sudo sh -c "echo 10 > /sys/class/fpga/intel-fpga-dev.0\

/intel-fpga-fme.0/intel-pac-hssi.2.auto/hssi_mgmt/config"

For the instance_id relevant to intel-fpga-dev.<instance_id> and /intel-fpga-fme.<instance_id> , I know I can find them using below tcl

[root@fig01 bin]# fpgainfo fme

Board Management Controller, microconetroller FW version 26889

Last Power Down Cause: POK_CORE

Last Reset Cause: None

//****** FME ******//

Object Id : 0xED00001

PCIe s:b:d:f : 0000:D8:00:0

Device Id : 0x09C4

Socket Id : 0x00

Ports Num : 01

Bitstream Id : 0x123000200000185

Bitstream Version : 0x562800030201

Pr Interface Id : 69528db6-eb31-577a-8c36-68f9faa081f6

Board Management Controller, microcontroller FW version unavailable

Last Power Down Cause: unavailable

Last Reset Cause: unavailable (can't open)

//****** FME ******//

Object Id : 0xED00000

PCIe s:b:d:f : 0000:3B:00:0

Device Id : 0x09C4

Socket Id : 0x00

Ports Num : 01

Bitstream Id : 0x123000200000185

Bitstream Version : 0x562800030201

Pr Interface Id : 69528db6-eb31-577a-8c36-68f9faa081f6

root@fig01 sw]# ls /sys/class/fpga

intel-fpga-dev.0 intel-fpga-dev.1

[root@fig01 sw]# ls /sys/class/fpga/intel-fpga-dev.0/

device intel-fpga-fme.0 intel-fpga-port.0 power subsystem uevent

[root@fig01 sw]# ls /sys/class/fpga/intel-fpga-dev.0/intel-fpga-fme.0/

altr-asmip2.0.auto bitstream_id cache_size dperf emif_mgmt fpga_manager modalias power revision subsystem uevent

avmmi-bmc.2.auto bitstream_metadata dev driver errors intel-pac-hssi.1.auto ports_num pr socket_id thermal_mgmt version

[root@fig01 sw]# ls /sys/class/fpga/intel-fpga-dev.1/

device intel-fpga-fme.1 intel-fpga-port.1 power subsystem uevent

[root@fig01 sw]# ls /sys/class/fpga/intel-fpga-dev.1/intel-fpga-fme.1/

altr-asmip2.3.auto bitstream_id cache_size dperf emif_mgmt fpga_manager modalias power revision subsystem uevent

avmmi-bmc.5.auto bitstream_metadata dev driver errors intel-pac-hssi.4.auto ports_num pr socket_id thermal_mgmt version

based on above information can I understand

for the card 0000:3B:00:0 , the 4 instance_id can be copied from above printing information intel-fpga-dev.0, intel-fpga-fme.0 , intel-pac-hssi.1.auto, intel-fpga-port.0

for the card 0000:d8:00:0 , the 4 instance_id can be copied from above printing information intel-fpga-dev.1, intel-fpga-fme.1 , intel-pac-hssi.4.auto, intel-fpga-port.1

does that mean

1,above intel-fpga-dev.0, intel-fpga-fme.0 , intel-pac-hssi.1.auto, intel-fpga-port.0 are fixed and do not need to change if the target card is 0000:3B:00:0 ?

2,intel-fpga-dev.1, intel-fpga-fme.1 , intel-pac-hssi.4.auto, intel-fpga-port.1 are fixed and do not need to change if the target card is 0000:d8:00:0?

The confused part is how to choose different channel since the example has 4*10G mode and has 4 10g channel (0,1,2,3) ?

I have only found intel-pac-hssi.1.auto For card 0 , and , intel-pac-hssi.4.auto for card 1 from printing information.

Does that mean

1,intel-pac-hssi.1.auto intel-pac-hssi.2.auto , intel-pac-hssi.3.auto are not applicable for card 0?

2,intel-pac-hssi.0.auto intel-pac-hssi.2.auto , intel-pac-hssi.3.auto are not applicable for card 1?

If so, how can choose different channel(0,1,2,3) for the same card?

If those unsee parameters are applicable , for example intel-pac-hssi.1.auto intel-pac-hssi.2.auto , intel-pac-hssi.3.auto are applicable for card 0,

why I can not print them using above tcl, any other operation I can try please let me know.

Thanks

Jim