61                 bp = in_bp;
  62 
  63                 /* we are establishing a new buffer memory association */
  64                 bp->b_flags &= ~(B_PAGEIO | B_PHYS | B_REMAPPED | B_SHADOW);
  65                 bp->b_proc = NULL;
  66                 bp->b_pages = NULL;
  67                 bp->b_shadow = NULL;
  68         }
  69 
  70         /* limit bits that can be set by bflags argument */
  71         ASSERT(!(bflags & ~(B_READ | B_WRITE)));
  72         bflags &= (B_READ | B_WRITE);
  73         bp->b_un.b_addr = 0;
  74 
  75         if (datalen) {
  76                 pdip = (A_TO_TRAN(ap))->tran_hba_dip;
  77 
  78                 /*
  79                  * use i_ddi_mem_alloc() for now until we have an interface to
  80                  * allocate memory for DMA which doesn't require a DMA handle.
  81                  * ddi_iopb_alloc() is obsolete and we want more flexibility in
  82                  * controlling the DMA address constraints.
  83                  */
  84                 while (i_ddi_mem_alloc(pdip, &scsi_alloc_attr, datalen,
  85                     ((callback == SLEEP_FUNC) ? 1 : 0), 0, NULL,
  86                     &bp->b_un.b_addr, &rlen, NULL) != DDI_SUCCESS) {
  87                         if (callback == SLEEP_FUNC) {
  88                                 delay(drv_usectohz(10000));
  89                         } else {
  90                                 if (!in_bp)
  91                                         freerbuf(bp);
  92                                 goto no_resource;
  93                         }
  94                 }
  95                 bp->b_flags |= bflags;
  96         }
  97         bp->b_bcount = datalen;
  98         bp->b_resid = 0;
  99 
 100         TRACE_0(TR_FAC_SCSI_RES, TR_SCSI_ALLOC_CONSISTENT_BUF_END,
 101             "scsi_alloc_consistent_buf_end");
 102         return (bp);

  61                 bp = in_bp;
  62 
  63                 /* we are establishing a new buffer memory association */
  64                 bp->b_flags &= ~(B_PAGEIO | B_PHYS | B_REMAPPED | B_SHADOW);
  65                 bp->b_proc = NULL;
  66                 bp->b_pages = NULL;
  67                 bp->b_shadow = NULL;
  68         }
  69 
  70         /* limit bits that can be set by bflags argument */
  71         ASSERT(!(bflags & ~(B_READ | B_WRITE)));
  72         bflags &= (B_READ | B_WRITE);
  73         bp->b_un.b_addr = 0;
  74 
  75         if (datalen) {
  76                 pdip = (A_TO_TRAN(ap))->tran_hba_dip;
  77 
  78                 /*
  79                  * use i_ddi_mem_alloc() for now until we have an interface to
  80                  * allocate memory for DMA which doesn't require a DMA handle.


  81                  */
  82                 while (i_ddi_mem_alloc(pdip, &scsi_alloc_attr, datalen,
  83                     ((callback == SLEEP_FUNC) ? 1 : 0), 0, NULL,
  84                     &bp->b_un.b_addr, &rlen, NULL) != DDI_SUCCESS) {
  85                         if (callback == SLEEP_FUNC) {
  86                                 delay(drv_usectohz(10000));
  87                         } else {
  88                                 if (!in_bp)
  89                                         freerbuf(bp);
  90                                 goto no_resource;
  91                         }
  92                 }
  93                 bp->b_flags |= bflags;
  94         }
  95         bp->b_bcount = datalen;
  96         bp->b_resid = 0;
  97 
  98         TRACE_0(TR_FAC_SCSI_RES, TR_SCSI_ALLOC_CONSISTENT_BUF_END,
  99             "scsi_alloc_consistent_buf_end");
 100         return (bp);