pvscsi_sg_list
struct pvscsi_sg_list *sg_list;
sizeof(struct pvscsi_sg_list) * sc->hcb_cnt, 1);
(struct pvscsi_sg_list *)((char *)sc->sg_list_dma.vaddr +
sizeof(struct pvscsi_sg_list) * i);
sc->sg_list_dma.paddr + sizeof(struct pvscsi_sg_list) * i;
hcb->sg_list_offset = sizeof(struct pvscsi_sg_list) * i;