mv_port_init(9)

✨ mv_port_init(9) — Kernel API Manual ✨

okay so bestie, welcome to mv_port_init 💅 this is a kernel API manual page, and yes we're gonna read the whole thing together, no skipping, no scrolling past the "boring" bits, because every single line here is load-bearing 🫶

---

🌸 NAME 🌸

mv_port_init — do some early initialization on a single port ✨

🎀 SYNOPSIS 🎀

void mv_port_init (struct ata_ioports *port , void __iomem *port_mmio );

like, that's the whole signature, she's compact, she's iconic 👑

🦋 ARGUMENTS 🦋

• port — the libata data structure that stores the shadow register addresses 🗂️
• port_mmio — the base address of the port 📍

💖 DESCRIPTION 💖

So here's the vibe check 🔍 — this function does three things, and it does them early, before the port is even up and running:

1. initializes the shadow register mmio addresses 🧚
2. clears any outstanding interrupts on the port 🧹
3. unmasks interrupts, so they're ready for when the port actually starts later ✨

LOCKING: inherited from the caller 🔒 — meaning this function does not grab its own locks, bestie. Whoever called it is holding the lock, and that's the whole arrangement. No cap.

🌈 SEE ALSO 🌈

Kernel file ./drivers/ata/sata_mv.c, plus this absolutely stacked friend group of functions 👯‍♀️:

• 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_qc_issue(9)
• mv_err_intr(9)
• mv_host_intr(9)
• mv_interrupt(9)
• mv_init_host(9)
• mv_platform_probe(9)
• mv_print_info(9)
• mv_pci_init_one(9)

---

and that's the page, bestie, you ate that 🍓 source is ./drivers/ata, dated October 2026 — mwah, go forth and initialize your ports 💜🎀