• Eric Anholt's avatar
    drm/v3d: Add support for submitting jobs to the TFU. · 1584f16c
    Eric Anholt authored
    The TFU can copy from raster, UIF, and SAND input images to UIF output
    images, with optional mipmap generation.  This will certainly be
    useful for media EGL image input, but is also useful immediately for
    mipmap generation without bogging the V3D core down.
    
    For now we only run the queue 1 job deep, and don't have any hang
    recovery (though I don't think we should need it, with TFU).  Queuing
    multiple jobs in the HW will require synchronizing the YUV coefficient
    regs updates since they don't get FIFOed with the job.
    
    v2: Change the ioctl to IOW instead of IOWR, always set COEF0, explain
        why TFU is AUTH, clarify the syncing docs, drop the unused TFU
        interrupt regs (you're expected to use the hub's), don't take
        &bo->base for NULL bos.
    v3: Fix a little whitespace alignment (noticed by checkpatch), rebase
        on drm_sched_job_cleanup() changes.
    Signed-off-by: default avatarEric Anholt <eric@anholt.net>
    Reviewed-by: Dave Emett <david.emett@broadcom.com> (v2)
    Link: https://patchwork.freedesktop.org/patch/264607/
    1584f16c
v3d_drv.c 9.13 KB