mei_me_d0i3_enter(9)

💅 mei_me_d0i3_enter(9) — Kernel API Manual, bestie edition ✨

okay so picture this: we're deep in the mei driver, the kernel's little messenger buddy, and this page is literally the whole mei_me_d0i3_enter(9) moment. yes it's a real function, yes it's in the Kernel API Manual, and yes i'm about to explain it to you like we're on facetime 🫶

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🌸 NAME 🌸

mei_me_d0i3_enter — bestie this one performs the d0i3 entry procedure. that's it, that's the vibe. and listen, there are receipts on what it does not do:

• no hbm PG handshake 💀
• no waiting for confirmation 😭

and the big one: it runs with interrupts disabled. so like, everybody hold still while this happens, mkay? interrupts disabled, no cap 🔥

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✨ SYNOPSIS ✨

int mei_me_d0i3_enter (struct mei_device *dev );

look at her go 😌 iconic signature, no notes.

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🎀 ARGUMENTS 🎀

• dev — the device structure 💖. like, the actual device we're doing the d0i3 entry thing on. give her the struct and she'll handle it.

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⭐ RETURN ⭐

• 0 on success 🌈 (slay, we love a clean zero)
• an error code otherwise 💀 (not slay, but at least you know)

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🦋 SEE ALSO 🦋

okay so this is the part where i list every single friend in the group chat, and there are a LOT of them, so buckle up bestie 🧚

first, the home: Kernel file ./drivers/misc/mei/hw-me.c 👑

then the whole crew, in order:

mei_me_reg_read(9), mei_me_reg_write(9), mei_me_mecbrw_read(9), mei_me_hcbww_write(9), mei_me_mecsr_read(9), mei_hcsr_read(9), mei_hcsr_write(9), mei_hcsr_set(9), mei_hcsr_set_hig(9), mei_me_d0i3c_read(9), mei_me_d0i3c_write(9), mei_me_trc_status(9), mei_me_fw_status(9), mei_me_hw_config(9), mei_me_pg_state(9), me_intr_disable(9), me_intr_clear(9), mei_me_intr_clear(9), mei_me_intr_enable(9), mei_me_intr_disable(9), mei_me_synchronize_irq(9), mei_me_hw_reset_release(9), mei_me_host_set_ready(9), mei_me_host_is_ready(9), mei_me_hw_is_ready(9), mei_me_hw_is_resetting(9), mei_gsc_pxp_check(9), mei_me_hw_ready_wait(9), mei_me_hw_start(9), mei_hbuf_filled_slots(9), mei_me_hbuf_is_empty(9), mei_me_hbuf_empty_slots(9), mei_me_hbuf_depth(9), mei_me_hbuf_write(9), mei_me_count_full_read_slots(9), mei_me_read_slots(9), mei_me_pg_set(9), mei_me_pg_unset(9), mei_me_pg_legacy_enter_sync(9), mei_me_pg_legacy_exit_sync(9), mei_me_pg_in_transition(9), mei_me_pg_is_enabled(9), mei_me_d0i3_set(9), mei_me_d0i3_unset(9), mei_me_d0i3_enter_sync(9), mei_me_d0i3_exit_sync(9), mei_me_pg_legacy_intr(9), mei_me_d0i3_intr(9), mei_me_pg_intr(9), mei_me_pg_enter_sync(9), mei_me_pg_exit_sync(9), mei_me_hw_reset(9), mei_me_irq_quick_handler(9), mei_me_irq_thread_handler(9), mei_me_polling_thread(9), mei_me_fw_type_nm(9), mei_me_fw_type_sps_4(9), mei_me_fw_type_sps_ign(9), mei_me_dev_init(9)

that's the whole roster 💅 iykyk.

also psst — a little reminder from the top: this entry procedure runs with interrupts disabled, does no hbm PG handshake, and does not wait for confirmation. don't forget, bestie 🫶

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and that's the page!! source/version: ./drivers/misc/mei, dated October 2026 🌸 go forth and d0i3-enter responsibly, ily, bye 💜🎀