HMA_MAX_ADDR_IN_CMD
ncmds = DIV_ROUND_UP(sgt->nents, HMA_MAX_ADDR_IN_CMD);
for (i = 0, k = 0; i < ncmds; i++, k += HMA_MAX_ADDR_IN_CMD) {
u8 naddr = HMA_MAX_ADDR_IN_CMD;
naddr = sgt->nents % HMA_MAX_ADDR_IN_CMD;
naddr = naddr ? naddr : HMA_MAX_ADDR_IN_CMD;