ISP_QUEUE_SIZE
nw = min(wl, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)) / 4);
MEMORYBARRIER(isp, SYNC_REQUEST, 0, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)), -1);
dlen = min(risc_size, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)) / 4);
len = ISP_QUEUE_SIZE(ATIO_QUEUE_LEN(isp));
len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));