ipc_pcie_addr_unmap(9)

💅 ipc_pcie_addr_unmap(9) — your fave kernel API manual bestie

okay so like, welcome to the Kernel API Manual entry for ipc_pcie_addr_unmap, and honestly? she's a cleanup queen and we stan 🧚✨

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🎀 NAME 🎀

ipc_pcie_addr_unmap — literally unmaps that skb memory region from the IOVA address space, no cap 🫶

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✨ SYNOPSIS ✨

void ipc_pcie_addr_unmap (struct iosm_pcie *ipc_pcie , size_t size ,
       dma_addr_t mapping , int direction );

that's it, that's the whole signature, she's giving "short and iconic" 💅 and yes the return type is void — she doesn't return anything, she just does the thing and leaves 🌸

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🌈 ARGUMENTS 🌈

so bestie, here's what you're passing in, every single one:

• ipc_pcie — Pointer to struct iosm_pcie. like, the main character struct itself 👑
• size — Data size, aka how much data we're talking about 🍓
• mapping — Dma mapping address. yes, the address you mapped, this is where she goes to un-map it 😭
• direction — Data direction. gotta know which way the data's flowing, iykyk 🔥

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🦋 SEE ALSO 🦋

Kernel file ./drivers/net/wwan/iosm/iosm_ipc_pcie.h — and like, a whole friend group of related entries, all here for you:

• enum ipc_pcie_sleep_state(9)
• struct iosm_pcie(9)
• struct ipc_skb_cb(9)
• enum ipc_ul_usr_op(9)
• ipc_pcie_addr_map(9)
• ipc_pcie_alloc_skb(9)
• ipc_pcie_alloc_local_skb(9)
• ipc_pcie_kfree_skb(9)
• ipc_pcie_check_data_link_active(9)
• ipc_pcie_suspend(9)
• ipc_pcie_resume(9)
• ipc_pcie_check_aspm_enabled(9)
• ipc_pcie_config_aspm(9)

ngl, ipc_pcie_addr_map(9) and ipc_pcie_addr_unmap(9) are lowkey the same person doing and undoing, they're a matched set, obsessed 💖

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⭐ and that's the whole page! this one lives under ./drivers/net/wwan/iosm, dated October 2026, and it's called ipc_pcie_addr_unmap(9) — periodt 💜🎀