port_mmio(9)

okay bestie, welcome to port_mmio(9) from the Kernel API Manual — tiny page, huge main character energy 💅✨

🌸 NAME 🌸

So port_mmio is the little helper whose whole job is getting the MMIO address of the PDC2027x extended registers. That's it. That's the assignment. No cap, she ate and left no crumbs 🔥

✨ SYNOPSIS ✨

void __iomem * port_mmio (struct ata_port *ap , unsigned int offset );

Like, literally that's the signature. Hand over an ap and an offset, get back a void __iomem *. Signature stays exactly as written, because we do not mess with code in this group chat 🫶

🎀 ARGUMENTS 🎀

• ap — Port. Yep, that's the official description, and honestly she's serving main character energy with zero extra words 👑
• offset — offset from mmio base. That's the coordinate, bestie — keep it exact 🦋

🦋 SEE ALSO 🦋

the whole friend group is linked here, so go say hi 💖

• Kernel file: ./drivers/ata/pata_pdc2027x.c
• 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)
• pdc2027x_check_atapi_dma(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)

signing off from ./drivers/ata, dated October 2026, still your girl port_mmio(9) — byeee 🫶💋