peci_pci_local_read(9)

💅 peci_pci_local_read 💅

okay so bestie, welcome to the Kernel API Manual entry for peci_pci_local_read — yes it's a mouthful, yes you'll be saying it in your sleep, and yes it's actually iconic once you get it. grab a lil snack 🍓, this one's short and sweet.

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✨ NAME ✨

peci_pci_local_read — literally reads a 32-bit memory location using a raw address. that's the whole vibe. no cap. 🎀

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✨ SYNOPSIS ✨

int peci_pci_local_read (struct peci_device *device , u8 bus , u8 dev ,
u8 func , u16 reg , u32 *data );

look at her. six arguments. main character energy fr fr 👑

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✨ ARGUMENTS ✨

• device — the PECI device that this request is gonna be sent to 🫶 like, who's receiving the message bestie
• bus — bus 💫
• dev — device
• func — function
• reg — register
• data — where you stash the read data. that's the lil drop-off spot for whatever comes back 📦

ngl the middle four are giving "just labels" but they're doing their job and we respect them 💅

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✨ DESCRIPTION ✨

so what's the tea? it uses the RdPCIConfigLocal PECI command. that's it. that's the whole description. short king behavior 😭🔥

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✨ RETURN ✨

• 0 — slayed. succeeded. we love to see it ✨
• other values — in case of errors 🙈 you know the drill, anything that isn't 0 means something went sideways

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✨ SEE ALSO ✨

go check these out, they're all in the same friend group 🦋:

• the kernel file ./drivers/peci/cpu.c
• peci_temp_read(9)
• peci_pcs_read(9)
• peci_ep_pci_local_read(9)
• peci_mmio_read(9)

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💀 quick vibe check before you go: this one's from the ./drivers/peci directory, tagged October 2026, and it's filed under peci_pci_local_read(9) in the Kernel API Manual. now go forth and read those 32 bits, bestie 🌈💖🧚