eeh_pci_enable(9)

💖 eeh_pci_enable — a Kernel API Manual moment 💖

okay so bestie, welcome to the eeh_pci_enable(9) page — it lives in the Kernel API Manual and it's genuinely one of those little functions that saves your whole entire day when things go frozen. pull up a chair 🎀

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✨ NAME ✨

eeh_pci_enable — literally just: enable MMIO or DMA transfers for this slot. that's the whole vibe. 💅

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🦋 SYNOPSIS 🦋

int eeh_pci_enable (struct eeh_pe *pe , int function );

like, it takes two things and hands you back an int. no cap.

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🌸 ARGUMENTS 🌸

• pe — the EEH PE. that's your main character right there 👑
• function — the EEH option. this is the lewk you're asking for.

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💜 DESCRIPTION 💜

okay so here's the tea: this routine should be called to reenable frozen MMIO or DMA so that it would work correctly again. like, unfreeze it, bestie, let it breathe 🧚

it's useful while doing recovery or log collection on the indicated device — so when you're picking up the pieces or gathering the receipts (logs, the receipts ARE logs), this is the function you want. periodt. 🔥

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🌈 SEE ALSO 🌈

the kernel file is ./arch/powerpc/kernel/eeh.c and honestly the whole friend group is here, go say hi:

• eeh_slot_error_detail(9)
• eeh_token_to_phys(9)
• eeh_dev_check_failure(9)
• eeh_check_failure(9)
• pcibios_set_pcie_reset_state(9)
• eeh_set_dev_freset(9)
• eeh_pe_reset_full(9)
• eeh_save_bars(9)
• eeh_init(9)
• eeh_probe_device(9)
• eeh_remove_device(9)
• eeh_dev_open(9)
• eeh_dev_release(9)
• eeh_iommu_group_to_pe(9)
• eeh_pe_set_option(9)
• eeh_pe_get_state(9)
• eeh_pe_reset(9)
• eeh_pe_configure(9)
• eeh_pe_inject_err(9)

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💀 reminder babe: this page is from ./arch/powerpc/kernel, dated October 2026, and it's filed under eeh_pci_enable(9). screenshot it, cite it, slay it. 🫶

hope that helped bestie, mwah 💖✨🎀🦋🌸💅