T4_ULPTX_MIN_IO
roundup((len), T4_ULPTX_MIN_IO), 16)
if (remain & ~T4_ULPTX_MIN_IO)
dmalen = remain & ~(T4_ULPTX_MIN_IO-1);
DIV_ROUND_UP(len, T4_ULPTX_MIN_IO)));
DIV_ROUND_UP(len, T4_ULPTX_MIN_IO)));
ulpsc->len = htobe32(roundup(len, T4_ULPTX_MIN_IO));