CS461x_BUFFSIZE
if (sndbuf_alloc(ch->buffer, csa->parent_dmat, 0, CS461x_BUFFSIZE) != 0)
return CS461x_BUFFSIZE / 2;
/*alignment*/CS461x_BUFFSIZE,
/*boundary*/CS461x_BUFFSIZE,
/*maxsize*/CS461x_BUFFSIZE, /*nsegments*/1, /*maxsegz*/0x3ffff,