HOST_CMDS_BUF_LEN
pcr->host_sg_tbl_ptr = pcr->rtsx_resv_buf + HOST_CMDS_BUF_LEN;
pcr->host_sg_tbl_addr = pcr->rtsx_resv_buf_addr + HOST_CMDS_BUF_LEN;
if (pcr->ci < (HOST_CMDS_BUF_LEN / 4)) {
#define HOST_SG_TBL_BUF_LEN (RTSX_RESV_BUF_LEN - HOST_CMDS_BUF_LEN)