4630 clean stale references to ddi_iopb_alloc and ddi_iopb_free
4634 undocument scsi_hba_attach() and ddi_dma_lim(9s)

*** 341,353 ****
          *datap = (caddr_t)0;
          bzero((caddr_t)&local, sizeof (struct buf));
  
          /*
           * use i_ddi_mem_alloc() for now until we have an interface to allocate
!          * memory for DMA which doesn't require a DMA handle. ddi_iopb_alloc()
!          * is obsolete and we want more flexibility in controlling the DMA
!          * address constraints.
           */
          if (i_ddi_mem_alloc(pdip, &scsi_alloc_attr, datalen,
              ((func == SLEEP_FUNC) ? 1 : 0), 0, NULL, &local.b_un.b_addr, &rlen,
              NULL) != DDI_SUCCESS) {
                  return (pkt);
--- 341,351 ----
          *datap = (caddr_t)0;
          bzero((caddr_t)&local, sizeof (struct buf));
  
          /*
           * use i_ddi_mem_alloc() for now until we have an interface to allocate
!          * memory for DMA which doesn't require a DMA handle.
           */
          if (i_ddi_mem_alloc(pdip, &scsi_alloc_attr, datalen,
              ((func == SLEEP_FUNC) ? 1 : 0), 0, NULL, &local.b_un.b_addr, &rlen,
              NULL) != DDI_SUCCESS) {
                  return (pkt);