pdc2027x_init_one(9)

💖 pdc2027x_init_one(9) 💖

okay so welcome to the Kernel API Manual, bestie — this one's about pdc2027x_init_one(9) and it's genuinely such a little main character moment for the PCI layer. let's get into it 🫶

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✨ NAME ✨

pdc2027x_init_one — the PCI probe function, and honestly the way it just shows up the second an instance of a PCI adapter gets inserted?? iconic.

so here's the vibe check: this function checks whether the hardware is supported, initializes the hardware, and registers an instance of ata_host to libata. that's the whole arc, start to finish 💅

and yes, she implements struct pci_driver.probe() — no cap, that's literally her job.

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🌸 SYNOPSIS 🌸

int pdc2027x_init_one (struct pci_dev *pdev , const struct pci_device_id *ent );

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🎀 ARGUMENTS 🎀

• pdev — the instance of pci_dev that got found. like, this is the device, bestie, the one we're talking about 💖
• ent — the matching entry in the id_tbl[]. she's the one that said "yes, this hardware, this one right here" ⭐

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🦋 SEE ALSO 🦋

Kernel file ./drivers/ata/pata_pdc2027x.c — go read her, she's got range:

• 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)
• 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)

like that's a whole friend group right there. one big happy ./drivers/ata family tree 🌈

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and that's the page, bestie!! 🧚 crafted with love in ./drivers/ata, dated October 2026, and filed forever under pdc2027x_init_one(9) 💜✨