acpi_dma_parse_csrt(9)

💖 NAME 💖

okay so this is the acpi_dma_parse_csrt(9) page from the Kernel API Manual, and bestie, it does exactly what it says on the tin: it parses CSRT to extract additional DMA resources 💅✨

🦋 SYNOPSIS 🦋

void acpi_dma_parse_csrt (struct acpi_device *adev , struct acpi_dma *adma );

🎀 ARGUMENTS 🎀

• adev — the ACPI device to match with 🫶
• adma — the struct acpi_dma of the given DMA controller ✨

🌸 DESCRIPTION 🌸

CSRT — aka the Core System Resources Table — is a proprietary ACPI table introduced by Microsoft. not me learning ACPI lore on a Tuesday 😭 This table can contain devices that are not in the system DSDT table. In particular, DMA controllers might be described here 👑

We are using this table to get the request line range of the specific DMA controller, to be used later. lowkey iconic, highkey necessary 💀✨

👑 SEE ALSO 👑

Kernel file ./drivers/dma/acpi-dma.c — and the whole reference squad, fr fr:

• acpi_dma_parse_resource_group(9)
• acpi_dma_controller_register(9)
• acpi_dma_controller_free(9)
• devm_acpi_dma_controller_register(9)
• acpi_dma_update_dma_spec(9)
• acpi_dma_parse_fixed_dma(9)
• acpi_dma_request_slave_chan_by_index(9)
• acpi_dma_request_slave_chan_by_name(9)
• acpi_dma_simple_xlate(9)

mwah 💋 okay sign-off time: source/version line says ./drivers/dma, dated October 2026, and the page is acpi_dma_parse_csrt(9) — periodt, bye bestie! 🫶🌈