# m8l8th814n-eng/gs101-mainline architecture

> Architecture diagram of the GitHub repository m8l8th814n-eng/gs101-mainline, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-09). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/m8l8th814n-eng/gs101-mainline
- Repository: https://github.com/m8l8th814n-eng/gs101-mainline

## Overview

Linux is a general-purpose operating-system kernel: hardware drivers and core subsystems provide services to user processes and to other kernel code. The usual user-to-result path is a system call or device interface into a kernel service, which may coordinate memory, scheduling, filesystems, networking, or a device driver before returning a result. The graph combines documented kernel capabilities with representative sampled drivers and internal layers. The excerpts are selective, so links for broader subsystems are shown as unverified rather than asserted as specific call paths.

Main entry points: [`init/main.c`](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/init/main.c) (Kernel entry), [`drivers/dma/dmaengine.c`](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/dma/dmaengine.c) (DMA engine), [`drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c`](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c) (AtomISP pipeline), [`drivers/soundwire/amd_manager.c`](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/soundwire/amd_manager.c) (AMD SoundWire)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_core["Kernel core"]
  node_kernel["Kernel entry<br/>[main.c]"]
  node_dma["DMA engine<br/>[dmaengine.c]"]
end

subgraph group_services["Kernel services"]
  node_memory["Memory management"]
  node_scheduler["Scheduler"]
  node_filesystem["Filesystems"]
  node_networking["Networking"]
  node_power["Power management"]
end

subgraph group_media["Media and audio"]
  node_camera["AtomISP pipeline<br/>[pipeline.c]"]
  node_soundwire["AMD SoundWire<br/>[amd_manager.c]"]
end

subgraph group_devices["Device drivers"]
  node_usbhost["USB host"]
  node_massstorage["USB mass storage<br/>[f_mass_storage.c]"]
  node_i915["Intel GPU engines<br/>[intel_engine_cs.c]"]
  node_xe["Xe GPU engines<br/>[xe_hw_engine.c]"]
end

subgraph group_accelerators["Accelerators"]
  node_ptdma["AMD passthrough DMA<br/>[ptdma-dmaengine.c]"]
  node_qat["Intel QAT engine<br/>[adf_accel_engine.c]"]
  node_firmware["QAT firmware"]
end

node_process(("User process"))
node_hardware(("Hardware"))

node_process -.->|"enters"| node_kernel
node_kernel -.->|"uses"| node_memory
node_kernel -.->|"uses"| node_scheduler
node_kernel -.->|"uses"| node_filesystem
node_kernel -.->|"uses"| node_networking
node_kernel -.->|"uses"| node_power
node_kernel -.->|"dispatches"| node_usbhost
node_kernel -.->|"dispatches"| node_massstorage
node_kernel -.->|"provides"| node_dma
node_ptdma -.->|"implements interface"| node_dma
node_qat -->|"loads"| node_firmware
node_camera -.->|"controls"| node_hardware
node_soundwire -.->|"controls"| node_hardware
node_i915 -.->|"controls"| node_hardware
node_xe -.->|"controls"| node_hardware

click node_kernel "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/init/main.c"
click node_memory "https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/mm"
click node_filesystem "https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/fs"
click node_networking "https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/net"
click node_power "https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/drivers/base/power"
click node_usbhost "https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/drivers/usb"
click node_massstorage "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/usb/gadget/function/f_mass_storage.c"
click node_dma "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/dma/dmaengine.c"
click node_ptdma "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/dma/amd/ptdma/ptdma-dmaengine.c"
click node_qat "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/crypto/intel/qat/qat_common/adf_accel_engine.c"
click node_camera "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c"
click node_soundwire "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/soundwire/amd_manager.c"
click node_i915 "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/gpu/drm/i915/gt/intel_engine_cs.c"
click node_xe "https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/gpu/drm/xe/xe_hw_engine.c"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_kernel,node_dma,node_process toneBlue
class node_memory,node_scheduler,node_filesystem,node_networking,node_power toneAmber
class node_camera,node_soundwire toneMint
class node_usbhost,node_massstorage,node_i915,node_xe toneRose
class node_ptdma,node_qat,node_firmware,node_hardware toneIndigo
```

## Components

### Kernel core

- [Kernel entry](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/init/main.c): `init/main.c`
- [DMA engine](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/dma/dmaengine.c): `drivers/dma/dmaengine.c`

### Kernel services

- [Memory management](https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/mm): `mm`
- **Scheduler**
- [Filesystems](https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/fs): `fs`
- [Networking](https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/net): `net`
- [Power management](https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/drivers/base/power): `drivers/base/power`

### Media and audio

- [AtomISP pipeline](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c): `drivers/staging/media/atomisp/pci/runtime/pipeline/src/pipeline.c`
- [AMD SoundWire](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/soundwire/amd_manager.c): `drivers/soundwire/amd_manager.c`

### Device drivers

- [USB host](https://github.com/m8l8th814n-eng/gs101-mainline/tree/gs101-7.2/drivers/usb): `drivers/usb`
- [USB mass storage](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/usb/gadget/function/f_mass_storage.c): `drivers/usb/gadget/function/f_mass_storage.c`
- [Intel GPU engines](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/gpu/drm/i915/gt/intel_engine_cs.c): `drivers/gpu/drm/i915/gt/intel_engine_cs.c`
- [Xe GPU engines](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/gpu/drm/xe/xe_hw_engine.c): `drivers/gpu/drm/xe/xe_hw_engine.c`

### Accelerators

- [AMD passthrough DMA](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/dma/amd/ptdma/ptdma-dmaengine.c): `drivers/dma/amd/ptdma/ptdma-dmaengine.c`
- [Intel QAT engine](https://github.com/m8l8th814n-eng/gs101-mainline/blob/gs101-7.2/drivers/crypto/intel/qat/qat_common/adf_accel_engine.c): `drivers/crypto/intel/qat/qat_common/adf_accel_engine.c`
- **QAT firmware**

### Other components

- **User process**
- **Hardware**

## Connections

- User process → Kernel entry: enters
- Kernel entry → Memory management: uses
- Kernel entry → Scheduler: uses
- Kernel entry → Filesystems: uses
- Kernel entry → Networking: uses
- Kernel entry → Power management: uses
- Kernel entry → USB host: dispatches
- Kernel entry → USB mass storage: dispatches
- Kernel entry → DMA engine: provides
- AMD passthrough DMA → DMA engine: implements interface
- Intel QAT engine → QAT firmware: loads (evidence: `drivers/crypto/intel/qat/qat_common/adf_accel_engine.c`)
- AtomISP pipeline → Hardware: controls
- AMD SoundWire → Hardware: controls
- Intel GPU engines → Hardware: controls
- Xe GPU engines → Hardware: controls