mv_qc_prep(9)

🎀 mv_qc_prep(9) — the Kernel API Manual glow-up 🎀

bestie, this page is all about host-specific command prep, and it’s lowkey iconic. let’s get into the details without losing a single one. 💖

🌸 NAME 🌸

mv_qc_prep — Host specific command preparation.

✨ SYNOPSIS ✨

enum ata_completion_errors mv_qc_prep (struct ata_queued_cmd *qc );

🫶 ARGUMENTS 🫶

• qc — queued command to prepare. that’s the queued command you’re getting ready, bestie 🎀

💅 DESCRIPTION 💅

okay so picture this: if the command is not DMA, this routine simply redirects to the general purpose routine. no cap, that’s the move. 🦋

else — DMA mode, bestie — it handles prep of the CRQB (command request block), does some sanity checking, and calls the SG load routine. it’s giving responsible little prep gremlin and we love that for it 🔥

LOCKING: Inherited from caller. so whatever locking vibe you showed up with? that’s the locking vibe this function is working with 🫶

👑 SEE ALSO 👑

Kernel file: ./drivers/ata/sata_mv.c

• mv_save_cached_regs(9)
• mv_write_cached_reg(9)
• mv_stop_edma_engine(9)
• mv_port_start(9)
• mv_port_stop(9)
• mv_fill_sg(9)
• mv_sff_irq_clear(9)
• mv_check_atapi_dma(9)
• mv_bmdma_setup(9)
• mv_bmdma_start(9)
• mv_bmdma_stop_ap(9)
• mv_bmdma_status(9)
• mv_qc_prep_iie(9)
• mv_sff_check_status(9)
• mv_send_fis(9)
• mv_qc_issue_fis(9)
• mv_qc_issue(9)
• mv_err_intr(9)
• mv_host_intr(9)
• mv_interrupt(9)
• mv_port_init(9)
• mv_init_host(9)
• mv_platform_probe(9)
• mv_print_info(9)
• mv_pci_init_one(9)

xoxo, from ./drivers/ata — October 2026, mv_qc_prep(9) signing off 💖✨