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Add amdgpu tests to benchmark SDMA, read wavefront states and Trap registers. #1

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Add amdgpu tests to benchmark SDMA, read wavefront states and Trap registers. #1

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samikhawaja
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Add following new amdgpu tests,

  • Benchmarking SDMA memcpy from System RAM to VRAM.
  • Benchmarking SDMA memcpy from VRAM to System RAM.
  • Read wavefront states.
  • Read TBA/TMA registers visible from the shader code.

@samikhawaja
Add test to benchmark memcopy System RAM to VRAM using SDMA
278b4f9 
Use the 'SDMA_OPCODE_COPY' to copy a 512MB buffer from System RAM to a
buffer of same size in VRAM. Measure time it takes to complete this
operation and calculate the transfer speed.
@samikhawaja
Add test to benchmark memcopy VRAM to System RAM using SDMA
088e7b6 
Carve out a 'SDMA copy' helper function from 'System RAM to VRAM copy
test' and use it to add a test to benchmark the memory copy from VRAM to
System RAM using SDMA.
@samikhawaja
Add support to read wavefront states.
cd4b224 
Use the amdgpu kernel debugfs to read the wave states. Only support of
AI Family AMD gpus is available.
@samikhawaja
Add support to read sgpr/vgrp registers.
3f1aed5 
Use the 'gpr' file in amdgpu kernel debugfs to read the sgpr and vgpr
registers when a compute unit is active.
@samikhawaja
Add a test to read wavefront states.
cd0213a 
Dispatch a shader program with a long loop and read wavefront states.
@samikhawaja
Add a test to read shader visible TBA and TMA registers
cfd9ca9 
Read the TBA and TMA registers in a shader and write the values into a
buffer. Verify that the values are as set in the kernel mode driver.
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@samikhawaja