uaudio_iommu_unmap(9)

💅 NAME 💅

uaudio_iommu_unmap — unmaps iommu memory for adsp. Bestie, this is from the Kernel API Manual, and the whole assignment is literally in the name: uaudio_iommu_unmap(9) unmaps iommu memory for adsp. No cap. 💖

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✨ SYNOPSIS ✨

void uaudio_iommu_unmap (enum mem_type mtype , unsigned long iova ,
       size_t iova_size , size_t mapped_iova_size );

That's the exact signature, spacing and all. She's not messy — she's committed. 🎀

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🦋 ARGUMENTS 🦋

• mtype — ring type. That's the vibe check for which kind of ring we're talking about. 💅
• iova — virtual address to unmap. This is the address bestie, the actual thing getting unmapped. 📍
• iova_size — region size. How big the region is, periodt. 📏
• mapped_iova_size — mapped region size. The size of the mapped region, iykyk. 🫶

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🔥 DESCRIPTION 🔥

Okay so the tea: uaudio_iommu_unmap() unmaps the memory region that was previously assigned to the adsp. That's it. That's the whole function. It's giving cleanup era, reverse-mapping main character energy, and honestly? Obsessed. ✨

No extra drama, no secret side quests — just: memory region was assigned to adsp, now it gets unmapped. Slay. 💅

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🌈 SEE ALSO 🌈

Kernel file: ./sound/usb/qcom/qc_audio_offload.c

• uaudio_iommu_map_pa(9)
• uaudio_dev_intf_cleanup(9)
• uaudio_event_ring_cleanup_free(9)
• disable_audio_stream(9)
• uaudio_sideband_notifier(9)
• qmi_bye_cb(9)
• qmi_svc_disconnect_cb(9)
• enable_audio_stream(9)
• uaudio_transfer_buffer_setup(9)
• uaudio_endpoint_setup(9)
• uaudio_event_ring_setup(9)
• uaudio_populate_uac_desc(9)
• prepare_qmi_response(9)
• handle_uaudio_stream_req(9)
• qc_usb_audio_offload_init_qmi_dev(9)
• qc_usb_audio_offload_probe(9)
• qc_usb_audio_cleanup_qmi_dev(9)
• qc_usb_audio_offload_disconnect(9)
• qc_usb_audio_offload_suspend(9)

Go read them. Not me being bossy — the page said it, so I'm just passing the message along. 🫡💖

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Cute little sign-off bestie: source/version is ./sound/usb/qcom, and the date is October 2026. Mwah 💋✨