TCI6638K2K PCIE Legacy Interrupt

Charis Lee

Intellectual 340 points

Other Parts Discussed in Thread: TMS320C6670

Experts advise the following questions:

1.if the TCI6638K2K supports Legacy PCIE Interrupt Generation in EP Mode?

2. Set the following steps

disable MSI Interrupt

*(volatile unsigned int*)(0x21801050) = 0x807005;

enable Legacy Interrupt INTA、B、C、D
    *(volatile unsigned int*)(0x21800188) |= 0x1;
    *(volatile unsigned int*)(0x21800198) |= 0x1;
    *(volatile unsigned int*)(0x218001a8) |= 0x1;
    *(volatile unsigned int*)(0x218001b8) |= 0x1;

Generate an interrupt
(*(unsigned int*)0x21800064)=0x1;

PC (win7): Windriver can not receive interrupts

over 9 years ago

0 Ganapathi Dhandapani95 over 9 years ago

TI__Mastermind 28085 points

PCIe express legacy interrupts are not support in EP mode. It support RC mode only.

TI does not have generic Windows PCIe drivers for the EVM. Please check with board manufacture for windows PCIe driver support.

Thanks,

0 Charis Lee over 9 years ago in reply to Ganapathi Dhandapani95

Intellectual 340 points

Thanks for your reply.
I set my TMS320C6670 as EP mode(PCIe boot mode) and enable legay interrupt,the PC can receive interrupts.So I try in TCI6638K2K.
Thanks,
Regards.

0 Ganapathi Dhandapani95 over 9 years ago in reply to Charis Lee

TI__Mastermind 28085 points

Hi,

When the PCIESS is operating as an EP, either the legacy interrupts or the MSI interrupts can be triggered to the upstream ports (eventually leading to an interrupt in RC device). As per PCIe specifications, each PCIe function may generate only one of the legacy or MSI interrupt types as decided during configuration period.

PCIe Interrupt generation in EP mode is clearly explained in PCIe user guide document. Please take a look at section 2.14.2.1 Legacy Interrupt Generation in EP Mode" in PCIe user guide(SPRUGS6D).

Take a look at below links:

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/223849/789685.aspx#789685

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/247333/865855.aspx#865855

Thanks,

0 Charis Lee over 9 years ago in reply to Ganapathi Dhandapani95

Intellectual 340 points

Hi,

I saw the links.

The 6638 is set to PCIe boot mode

Lendian : 0x0

Boot Devices : 0x0110

SYS PLL Setting : 0x011

Boot Master : 0x1

eserved/ARM PLL Setting : 0x000

Bar Config : 0x0000

and I set the 6638 follow the procedure at section 2.14.2.1 Legacy Interrupt Generation in EP Mode.

I check the memory the EP_IRQ_STATUS (0x2180006C) register on EP shows 0x1 after the EP sends interrupt to host ((PCIE_EP_IRQ_SET) = 0x1).

The MSI Capabilities Register (MSI_CAP) is shows 0x00817005,This means that the MSI_EN bit is set to 1,there is no interrupt be triggered in RC device .But on the 6670 the MSI Capabilities Register (MSI_CAP) is shows 0x00807005 and

I really need your help to solve this issue!

0 Charis Lee over 9 years ago in reply to Ganapathi Dhandapani95

Intellectual 340 points

Hi, I saw the links. The 6638 is set to PCIe boot mode
Lendian : 0x0 Boot Devices : 0x0110 SYS PLL Setting : 0x011
Boot Master : 0x1 eserved/ARM PLL Setting : 0x000
Bar Config : 0x0000
and I set the 6638 follow the procedure at section 2.14.2.1 Legacy Interrupt Generation in EP Mode.
I check the memory the EP_IRQ_STATUS (0x2180006C) register on EP shows 0x1 after the EP sends interrupt to host ((PCIE_EP_IRQ_SET) = 0x1).
The MSI Capabilities Register (MSI_CAP) is shows 0x00817005,This means that the MSI_EN bit is set to 1,there is no interrupt be triggered in RC device .But on the 6670 the MSI Capabilities Register (MSI_CAP) is shows 0x00807005 and it can trigger an interrupt in RC device.
I really need your help to solve this issue!

0 Charis Lee over 9 years ago in reply to Ganapathi Dhandapani95

Intellectual 340 points

Hi, Thank you for you reply!
Whether there are similar to the IBL file to configure 6638?

0 Ganapathi Dhandapani95 over 9 years ago in reply to Charis Lee

TI__Mastermind 28085 points

IBL is only for keystone I devices(C6678, c6670, C6657, ..). Better to connect the JTAG on your board and change the register values.

Thanks,

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TCI6638K2K PCIE Legacy Interrupt