• David Miller's avatar
    drm: radeon: Use surface for PCI GART table. · 6abf6bb0
    David Miller authored
    This allocates a physical surface for the PCI GART table, this way no
    matter what other surface configurations exist the GART table will
    always be seen by the hardware properly.
    
    We encode the file pointer of the virtual surface allocate using a
    special cookie value, called PCIGART_FILE_PRIV.  On the last close, we
    release that surface.
    
    Just to be doubly safe, we run the pcigart table setup with the main
    surface control register clear.
    
    Based upon ideas from David Airlie and Ben Benjamin Herrenschmidt.
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    Signed-off-by: default avatarDave Airlie <airlied@linux.ie>
    6abf6bb0
radeon_drv.h 51.4 KB