pcc_parse_subspace_irq(9)

📦 version 7.3.1, in nixpkgs unstable

💅 pcc_parse_subspace_irq(9) — Kernel API Manual edition, bestie

okay so real talk, this one lives in the Kernel API Manual and it's called pcc_parse_subspace_irq — say that five times fast, i dare u 😭 it's literally the little guy whose whole job is parsing the PCC IRQ and the PCC ACK register. tiny job, iconic execution. 👑

✨ NAME ✨

pcc_parse_subspace_irq — parse the PCC IRQ and PCC ACK register 🎀

✨ SYNOPSIS ✨

int pcc_parse_subspace_irq (struct pcc_chan_info *pchan , struct
acpi_subtable_header *pcct_entry );

like yes bestie that's the whole signature, no cap, and yes the line break in the middle is real, it's giving "my IDE gave up" energy 💀

✨ ARGUMENTS ✨

  • pchan — pointer to the PCC channel info structure. it's the main character of this function fr 🫶
  • pcct_entry — pointer to the ACPI subtable header. the side character that still ate 💅

✨ RETURN ✨

0 for Success, else errno. so like, 0 = slay, anything else = something went sideways and the errno is here to tell u about it 😭

✨ DESCRIPTION ✨

okay so the vibe check here is simple: there should be one entry per PCC channel. periodt. 💖

This gets called for each entry in the PCC table. and the way it works is — it uses the PCCY Type1 structure for all applicable types (Type 1-4) to fetch irq. lowkey obsessed with how it just grabs every applicable type like that 🌸

so yeah. one entry per channel, called per table entry, Type1 structure doing the heavy lifting for Types 1-4, and the irq comes home. that's the whole plot 🦋

✨ SEE ALSO ✨

okay this list is long but we do not skip, we do not summarize, we list every single one bc that's the rule bestie 🌈

Kernel file ./drivers/mailbox/pcc.c, and then:

like, that's the whole friend group and they're all linked in the group chat 💜

ngl if u got here by accident, go read pcc_parse_subspace_db_reg(9) next, it's literally the sibling 🎀

and that's the page, bestie!! 🌸 this one ships out of ./drivers/mailbox and the date on it is October 2026 — so yeah, slightly future-dated, main character energy only 😌✨ go off, pcc_parse_subspace_irq(9), we love u 💖🫶👑

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