mv_qc_issue(9)

💅 mv_qc_issue(9) — a vibe check on the Kernel API Manual ✨

okay so bestie, buckle up, because we're about to talk about kicking off a command to the host and honestly? it's giving lowkey iconic 🎀

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🌸 NAME 🌸

mv_qc_issue — no cap, this is the one that initiates a command to the host ✨

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🦋 SYNOPSIS 🦋

unsigned int mv_qc_issue (struct ata_queued_cmd *qc );

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🎀 ARGUMENTS 🎀

• qc — the queued command you wanna start, periodt. that's the whole vibe. hand her over and she goes 🫶

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💜 DESCRIPTION 💜

okay so here's the tea ☕ — this routine is literally just a redirect queen 👑. if the command is not DMA</>, she simply forwards it along to the general purpose routine</> and minds her own business. no drama, no fuss, slay.

but if it is DMA? then she actually gets to work 🌈. she does a lil sanity check on our local caches of the request producer/consumer indices</> (yes, the vibes must be verified before we proceed, iykyk), then she enables DMA</> and bumps the request producer index</>. main character energy fr fr 💅.

LOCKING: inherited from caller. that means the lock situation is not hers to figure out — she got it from whoever called her. not me dealing with that 🙈

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👑 SEE ALSO 👑

the kernel file ./drivers/ata/sata_mv.c and honestly her whole friend group 🫶:

• 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(9)
• mv_qc_prep_iie(9)
• mv_sff_check_status(9)
• mv_send_fis(9)
• mv_qc_issue_fis(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)

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and that's the whole page bestie, we ate and left zero crumbs 🍓✨ this lil transmission came to you from ./drivers/ata, dated October 2026 — mwah, catch you in the next one 💖🧚