AM69: Enabling multi message signal interrupt

Walter Chow

Part Number: AM69

Tool/software:

Hi,

Can you provide ifnormation how to migrate a PCIe driver with multi message signal interrupt enabled from
linux 4.9.299 to to linux 6.12 for AM69? API like pci_enable_msi_exact and pci_enable_msi_range are used on linux 4.9.299
but are deprecated for linux 6.12. In addition, is there any device tree update involved?

Thanks.

Walter

4 months ago

0 Takuma Fujiwara 4 months ago

TI__Guru 56113 points

Hi Walter,

Please reference Linux kernel documentation for MSI for the deprecated legacy API and recommendations: https://docs.kernel.org/PCI/msi-howto.html#legacy-apis

You may also reference the SDK EP/RC example: https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-am69a/11_00_00/exports/docs/linux/Foundational_Components/Kernel/Kernel_Drivers/PCIe/PCIe_End_Point.html. The EP example that is upstreamed can configure multiple msi_interrupts

Regards,

Takuma

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AM69: Enabling multi message signal interrupt