sl82c105_bmdma_start(9)

✨ NAME ✨

okay bestie, welcome to the Kernel API Manual page for sl82c105_bmdma_start(9) 💖 — this is literally the DMA engine begin function. Periodt.

sl82c105_bmdma_start — DMA engine begin

💅 SYNOPSIS 💅

void sl82c105_bmdma_start (struct ata_queued_cmd *qc );

🎀 ARGUMENTS 🎀

• qc — ATA command. That's the whole argument, bestie 🫶

🦋 DESCRIPTION 🦋

okay so the vibe here is: reset the DMA engine each use, as recommended by the errata document. Not me being dramatic — that's literally the recommendation ✨.

FIXME: if we switch clock at BMDMA start/end we might get better PIO performance on DMA capable devices.

That FIXME is straight from the original, bestie — I'm not making it up 💀

🌸 SEE ALSO 🌸

• Kernel file ./drivers/ata/pata_sl82c105.c
• sl82c105_pre_reset(9)
• sl82c105_configure_piomode(9)
• sl82c105_set_piomode(9)
• sl82c105_configure_dmamode(9)
• sl82c105_reset_engine(9)
• sl82c105_bmdma_stop(9)
• sl82c105_qc_defer(9)
• sl82c105_bridge_revision(9)

and that's the whole page, bestie 💜 the source/version is ./drivers/ata, dated October 2026 — mwah, bye 👑.