STRUCT PMC(9)

✨ struct pmc(9) — like, the whole Kernel API Manual tea 💅

okay so bestie, buckle up 🎀 we're diving into struct pmc, which is literally the private info structure for a pmc. it's not scary, i promise — it's giving "small struct, big main character energy" 🌟

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🌸 SYNOPSIS

here's the whole vibe, verbatim, no cap:

struct pmc {
    u64 base_addr;
    void __iomem *regbase;
    const struct pmc_reg_map *map;
    u32 *lpm_req_regs;
    u32 ltr_ign;
    u8 num_lpm_modes;
    u8 lpm_en_modes[LPM_MAX_NUM_MODES];
    u16 devid;
 };

look at her. iconic. 💖

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🦋 Members

• base_addr — holds the pmc base address. that's it, that's the address. 📍
• regbase — pointer to the io-remapped memory location. yes, remapped. she's been places. 🗺️
• map — pointer to a pmc_reg_map struct that contains the platform-specific attributes. every platform's got its own little personality, and this is where it lives 🫶
• lpm_req_regs — the list of substate requirements. lowkey a whole checklist. 📝
• ltr_ign — holds LTR ignore data while suspended. she's holding onto it for later, respectfully 😴
• num_lpm_modes — count of enabled modes. just a number, but make it fashion 🔢
• lpm_en_modes — array of enabled modes, from lowest to highest priority. ordered. organized. obsessed. 👑
• devid — Device ID of the SSRAM device. say hi to the SSRAM device for me 🍓

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💜 Description

pmc contains info about one power management controller device. that's the whole thing! one device, one struct, one little home for all her data 🏠✨ fr fr.

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🌈 SEE ALSO

• Kernel file ./drivers/platform/x86/intel/pmc/core.h struct pmc_reg_map(9), struct pmc_info(9), struct pmc_dev(9), struct pmc_dev_info(9)

go read the whole friend group, they're all linked 💅🔗

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and that's the page, bestie 🧚 this little manual moment came from ./drivers/platform/x86/intel/pmc, dated October 2026 — struct pmc(9), slay 💖✨