On Pld | How To Disable Dma

This requires an internal TLP filter in your PLD logic:

April 17, 2026 Category: Security & Firmware how to disable dma on pld

If you are using a Programmable Logic Device (PLD)—such as an FPGA or CPLD—as a PCIe endpoint, disabling DMA isn't always as simple as flipping a driver switch. You have to kill it at the hardware configuration level. This requires an internal TLP filter in your

Direct Memory Access (DMA) is a powerful feature. It allows hardware devices to read/write system RAM without bothering the CPU. However, from a security perspective, an unrestricted DMA channel is a gaping hole—it’s the primary vector for DMA attacks like Thunderclap and FireWire DMA . from a security perspective