124 lines
2.7 KiB
ReStructuredText
124 lines
2.7 KiB
ReStructuredText
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===============
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AMDGPU Glossary
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===============
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Here you can find some generic acronyms used in the amdgpu driver. Notice that
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we have a dedicated glossary for Display Core at
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'Documentation/gpu/amdgpu/display/dc-glossary.rst'.
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.. glossary::
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active_cu_number
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The number of CUs that are active on the system. The number of active
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CUs may be less than SE * SH * CU depending on the board configuration.
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CP
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Command Processor
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CPLIB
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Content Protection Library
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CU
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Compute Unit
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DFS
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Digital Frequency Synthesizer
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ECP
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Enhanced Content Protection
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EOP
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End Of Pipe/Pipeline
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GART
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Graphics Address Remapping Table. This is the name we use for the GPUVM
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page table used by the GPU kernel driver. It remaps system resources
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(memory or MMIO space) into the GPU's address space so the GPU can access
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them. The name GART harkens back to the days of AGP when the platform
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provided an MMU that the GPU could use to get a contiguous view of
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scattered pages for DMA. The MMU has since moved on to the GPU, but the
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name stuck.
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GC
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Graphics and Compute
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GMC
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Graphic Memory Controller
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GPUVM
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GPU Virtual Memory. This is the GPU's MMU. The GPU supports multiple
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virtual address spaces that can be in flight at any given time. These
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allow the GPU to remap VRAM and system resources into GPU virtual address
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spaces for use by the GPU kernel driver and applications using the GPU.
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These provide memory protection for different applications using the GPU.
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GTT
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Graphics Translation Tables. This is a memory pool managed through TTM
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which provides access to system resources (memory or MMIO space) for
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use by the GPU. These addresses can be mapped into the "GART" GPUVM page
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table for use by the kernel driver or into per process GPUVM page tables
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for application usage.
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IH
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Interrupt Handler
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HQD
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Hardware Queue Descriptor
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IB
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Indirect Buffer
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IP
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Intellectual Property blocks
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KCQ
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Kernel Compute Queue
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KGQ
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Kernel Graphics Queue
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KIQ
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Kernel Interface Queue
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MEC
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MicroEngine Compute
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MES
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MicroEngine Scheduler
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MMHUB
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Multi-Media HUB
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MQD
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Memory Queue Descriptor
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PPLib
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PowerPlay Library - PowerPlay is the power management component.
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PSP
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Platform Security Processor
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RLC
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RunList Controller
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SDMA
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System DMA
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SE
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Shader Engine
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SH
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SHader array
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SMU
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System Management Unit
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SS
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Spread Spectrum
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VCE
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Video Compression Engine
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VCN
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Video Codec Next
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