GPU Firmware

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VCE feature version: 0, firmware version: 0x00000000
UVD feature version: 0, firmware version: 0x40000d00
MC feature version: 0, firmware version: 0x00a777d0
ME feature version: 29, firmware version: 0x00000091
PFP feature version: 29, firmware version: 0x00000054
CE feature version: 29, firmware version: 0x0000003d
RLC feature version: 1, firmware version: 0x00000001
RLC SRLC feature version: 0, firmware version: 0x00000000
RLC SRLG feature version: 0, firmware version: 0x00000000
RLC SRLS feature version: 0, firmware version: 0x00000000
RLCP feature version: 0, firmware version: 0x00000000
RLCV feature version: 0, firmware version: 0x00000000
MEC feature version: 0, firmware version: 0x00000000
IMU feature version: 0, firmware version: 0x00000000
SOS feature version: 0, firmware version: 0x00000000
ASD feature version: 0, firmware version: 0x00000000
TA XGMI feature version: 0x00000000, firmware version: 0x00000000
TA RAS feature version: 0x00000000, firmware version: 0x00000000
TA HDCP feature version: 0x00000000, firmware version: 0x00000000
TA DTM feature version: 0x00000000, firmware version: 0x00000000
TA RAP feature version: 0x00000000, firmware version: 0x00000000
TA SECUREDISPLAY feature version: 0x00000000, firmware version: 0x00000000
SMC feature version: 0, program: 16, firmware version: 0x10020000 (2.0.0)
SDMA0 feature version: 0, firmware version: 0x00000000
SDMA1 feature version: 0, firmware version: 0x00000000
VCN feature version: 0, firmware version: 0x00000000
DMCU feature version: 0, firmware version: 0x00000000
DMCUB feature version: 0, firmware version: 0x00000000
TOC feature version: 0, firmware version: 0x00000000
MES_KIQ feature version: 0, firmware version: 0x00000000
MES feature version: 0, firmware version: 0x00000000
VBIOS version: 113-xxx-xxx

现代 GPU/NPU 芯片里一般都会搭载多个微处理器(或微控制器)， 像 Intel GuC (uC 指 µC, micro controller), AMD MEC(MicroEngine Compute), NVIDIA GSP (GPU System Processor)。跑在这些微控制器上的代码一般以**固件 (Firmware)**的形式存在，即使是在 Linux 内核里也是二进制格式，源代码一般是不公开的，Linux 社区有一个专门的 git tree linux-firmware 来维护各种硬件的 firmware/blob。

上面的 firmware 信息是从 AMD R7340 显卡机器上输出的 (under root privilege)

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cat /sys/kernel/debug/dri/0/amdgpu_firmware_info