• Rob Clark's avatar
    drm/msm: add a3xx gpu support · 7198e6b0
    Rob Clark authored
    Add initial support for a3xx 3d core.
    
    So far, with hardware that I've seen to date, we can have:
     + zero, one, or two z180 2d cores
     + a3xx or a2xx 3d core, which share a common CP (the firmware
       for the CP seems to implement some different PM4 packet types
       but the basics of cmdstream submission are the same)
    
    Which means that the eventual complete "class" hierarchy, once
    support for all past and present hw is in place, becomes:
     + msm_gpu
       + adreno_gpu
         + a3xx_gpu
         + a2xx_gpu
       + z180_gpu
    
    This commit splits out the parts that will eventually be common
    between a2xx/a3xx into adreno_gpu, and the parts that are even
    common to z180 into msm_gpu.
    
    Note that there is no cmdstream validation required.  All memory access
    from the GPU is via IOMMU/MMU.  So as long as you don't map silly things
    to the GPU, there isn't much damage that the GPU can do.
    Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
    7198e6b0
msm_ringbuffer.h 1.23 KB