TMDS243EVM: PCIE: RC read EP Bar info stuck. 243EVM+Intel FPGA

chunyang fu

Part Number: TMDS243EVM

Tool/software:

Hi Ti Expert,

I'm trying to use 243EVM as RC and Intel FPGA as EP.

I can successfully read the Device ID and Vendor ID of the EP. Following the example C:\ti\mcu_plus_sdk_am243x_09_00_00_35\examples\drivers\pcie\pcie_buf_transfer\pcie_buf_transfer_rc

And I add the following Bar Configure function. Following the post: PCIe link up c6678 - Processors forum - Processors - TI E2E support forums

int32_t pcie_fpga_ep_bar1_cfg(Pcie_Handle handle)
{
int32_t status = SystemP_SUCCESS;
Pcie_BarCfg barCfg;

barCfg.location = PCIE_LOCATION_REMOTE;
barCfg.mode = PCIE_EP_MODE;
barCfg.base = 0x70000000;
barCfg.prefetch = PCIE_BAR_NON_PREF;
barCfg.type = PCIE_BAR_TYPE32;
barCfg.memSpace = PCIE_BAR_MEM_MEM;
barCfg.idx = 0;//1;

status = Pcie_cfgBar (handle, &barCfg);

//DebugP_assert(SystemP_SUCCESS == status);

if (SystemP_SUCCESS != status)
{
DebugP_log("FPGA Bar1 configure fail\r\n");
}
else
{
DebugP_log("FPGA Bar1 configure done\r\n");
}

return status;
}

This picture is the configure of FPGA and my Outbound.

My program always stuck here in Pcie_readRegs():

please help me about it.

Thanks

Chunyang

4 months ago

0 Ashwani Goel 4 months ago

TI__Mastermind 22660 points

Hi Chunyang ,

Thanks for your query.

which cable are you using to connect RC and EP?
what is RefClk connection in the setup ?

Regards

Ashwani

0 chunyang fu 4 months ago in reply to Ashwani Goel

Prodigy 150 points

Hi Ashwani,

The Fpga borad:

https://www.digikey.com/en/products/detail/intel/DK-DEV-10CX220-A/7917037?s=N4IgTCBcDaICIGkC0cCiA1JBGADAYQA0wwckBBEAXQF8g

Actually, I plug this FPGA kit directly onto the 234EVM.

I have not modified 234EVM anyting except that I removed the Jumper on J34.

After removed the Jumper on J34, I can read Vendor&Device ID of the FPGA.

According to the schematic of 234EVM, now the REFCLK of MCU and FPGA are both supplied by U105 on 234EVM, separately. They are CLKGEN_REFCLK1 and CLKGEN_REFCLK4.

Thanks

Chunyang

0 Ashwani Goel 4 months ago in reply to chunyang fu

TI__Mastermind 22660 points

Hi chunyang fu,

Thanks for details.

I will check and get back toy ou.

Regards

Ashwani

0 Ashwani Goel 3 months ago in reply to Ashwani Goel

TI__Mastermind 22660 points

Hi Chunyang,

Looks like similar discussion is going on another thread. If yes, can we close this thread?

(+) TMDS243EVM: PCIE: RC read EP Bar info stuck. 243EVM+Intel FPGA - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

Regards

Ashwani

0 Ashwani Goel 3 months ago in reply to Ashwani Goel

TI__Mastermind 22660 points

Hi Chunyang,

Looks like similar discussion is going on another thread. If yes, can we close this thread?

(+) TMDS243EVM: PCIE: RC read EP Bar info stuck. 243EVM+Intel FPGA - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

Regards

Ashwani

0 chunyang fu 3 months ago in reply to Ashwani Goel

Prodigy 150 points

Hi Ashwani,

I also want to continue this one beside that one, then I can ask more question a day.

Here is my question.

Why I cannot read and write the OB_Size using the following code?

Whether I need to modify this OB_size before use it to match EP's BAR?

int32_t Pcie_setObSize(Pcie_Handle handle)
{
int32_t status = SystemP_SUCCESS;
Pcie_Registers setRegs;
Pcie_ObSizeReg obSize;

memset (&setRegs, 0, sizeof(setRegs));
memset (&obSize, 0, sizeof(obSize));
obSize.size = 3;//pcie_OB_SIZE_8MB; // 2M

setRegs.obSize = &obSize;

status = Pcie_writeRegs(handle, PCIE_LOCATION_LOCAL, &setRegs);

return status;
}

int32_t Pcie_getObSize(Pcie_Handle handle)
{
int32_t status = SystemP_SUCCESS;
Pcie_Registers getRegs;
Pcie_ObSizeReg obSize;

memset (&getRegs, 0, sizeof(getRegs));
memset (&obSize, 0, sizeof(obSize));

getRegs.obSize = &obSize;

status = Pcie_readRegs(handle, PCIE_LOCATION_LOCAL, &getRegs);

return status;
}

Thanks

Chunyang

0 Ashwani Goel 3 months ago in reply to chunyang fu

TI__Mastermind 22660 points

chunyang fu said:
I also want to continue this one beside that one, then I can ask more question a day.

Then, can you please update the title of thread?

We encourage to have one thread per question for better understanding of wider audience.

It will help us in housekeeping and follow up internally for issue/bug fixes and closure.

chunyang fu said:
Why I cannot read and write the OB_Size using the following code?

Whether I need to modify this OB_size before use it to match EP's BAR?

Will get back to you on this by next week.

Regards

Ashwani

0 chunyang fu 3 months ago in reply to Ashwani Goel

Prodigy 150 points

Hi Ashwani,

I agree with you, let's turn to my other thread. If your get any update please post the following linke.

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1398510/tmds243evm-pcie-rc-read-ep-bar-info-stuck-243evm-intel-fpga/5362659#5362659

Thanks

Chunyang