chai/src

Chai code

This folder contains (most of the) code developed for chai.

• re.c: Prototype sample to drive the GPU. Links with shim, synthesise, memory, etc.
• synthesise.c: Core of the prototype driver. Generates GPU memory data structures for job submission, uploading shaders, vertices, etc.
• shim.c: Interface with the kernel. Primarily generates ioctls. If the kernel ABI changes, only shim.c changes.
• memory.c: Memory management stub. Allocates a chunk of memory through shim.c and implements a simple waterfall allocator. In the future, a proper allocator will be used instead.
• ktrace.c: GPU tracer. Optionally linked with the kernel to debug chai and trace the blob.
• chai-notes.h: Assortment of data structures, constants, and macros for interfacing with the GPU. Some parts were found in the kernel code dump. Others are the product of reverse-engineering. Some are a mix of the two.
• jobs.h: Data structure from kernelspace needed in userland.
• black-output-trace.c: Autogenerated file needed by ktrace. Run black to generate this.