pdc2027x_check_atapi_dma(9)

okay so bestie, welcome to the pdc2027x_check_atapi_dma(9) page from the Kernel API Manual — it’s giving kernel-debugging main character energy 🔥

💖 NAME 💖

pdc2027x_check_atapi_dma — check whether ATAPI DMA can be supported for this command. That’s the whole vibe check, no cap 💅

🌸 SYNOPSIS 🌸

int pdc2027x_check_atapi_dma (struct ata_queued_cmd *qc );

🎀 ARGUMENTS 🎀

• qc — the metadata associated with the taskfile to check, lowkey essential 🫶

✨ DESCRIPTION ✨

LOCKING: None (inherited from caller). Yup, it literally inherits the locking from the caller — not me adding extra rules, that’s just the facts, bestie 😌

💫 RETURN 💫

• 0 — when ATAPI DMA can be used ✨
• 1 — otherwise 💀

🦋 SEE ALSO 🦋

Kernel file ./drivers/ata/pata_pdc2027x.c — go look at it if you’re feeling nosy 👀

• port_mmio(9)
• dev_mmio(9)
• pdc2027x_cable_detect(9)
• pdc2027x_port_enabled(9)
• pdc2027x_prereset(9)
• pdc2027x_mode_filter(9)
• pdc2027x_set_piomode(9)
• pdc2027x_set_dmamode(9)
• pdc2027x_set_mode(9)
• pdc_read_counter(9)
• pdc_adjust_pll(9)
• pdc_detect_pll_input_clock(9)
• pdc_hardware_init(9)
• pdc_ata_setup_port(9)
• pdc2027x_init_one(9)

okay that’s the whole page, bestie — source/version is ./drivers/ata, date is October 2026, and this is pdc2027x_check_atapi_dma(9). bye, slay, mwah 💋