How wireguard/wireguard-linux works
Linux is an operating-system kernel: its principal workflow is to start the kernel, expose services to userspace, and mediate access to hardware through architecture support and device drivers. This slice also shows distinct DMA, cryptographic acceleration, graphics, camera, USB-storage, and audio-bus subsystems. The README describes the kernel’s broad role; source excerpts and the index support only selected internal relationships, so other links are omitted rather than inferred.
Main entry points: dmaengine.c DMA engine API · f_mass_storage.c USB mass storage · ccp-dmaengine.c CCP DMA driver · ptdma-dmaengine.c PTDMA driver
Components 16
Kernel startup
- Kernel entry
init/main.c
Architecture support
- Guarded storage
arch/s390/kernel/guarded_storage.c
Device and I/O
- DMA engine API
drivers/dma/dmaengine.c - USB mass storage
drivers/usb/gadget/function/f_mass_storage.c - USB gadget core
- AMD SoundWire manager
drivers/soundwire/amd_manager.c - Platform hardware drivers
drivers/platform/x86/pcengines-apuv2.c
Accelerators and media
- CCP DMA driver
drivers/crypto/ccp/ccp-dmaengine.c - PTDMA driver
drivers/dma/amd/ptdma/ptdma-dmaengine.c - Crypto request engine
crypto/crypto_engine.c - QAT firmware engine
drivers/crypto/intel/qat/qat_common/adf_accel_engine.c - i915 GPU engine
drivers/gpu/drm/i915/gt/intel_engine_cs.c - Xe GPU engine
drivers/gpu/drm/xe/xe_hw_engine.c - Komeda pipeline
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c - AtomISP pipeline
drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c
Other components
- System and userspace
Connections 4
- System and userspace → Kernel entry: starts
- CCP DMA driver → DMA engine API: implements
drivers/crypto/ccp/ccp-dmaengine.c - PTDMA driver → DMA engine API: uses API
drivers/dma/amd/ptdma/ptdma-dmaengine.c - USB mass storage → USB gadget core: configures endpoints
drivers/usb/gadget/function/f_mass_storage.c