obp/obp/dev/ide/pktdata.fth

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\ Hypervisor Software File: pktdata.fth
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id: @(#)pktdata.fth 1.2 01/05/29
purpose:
copyright: Copyright 1997-2001 Sun Microsystems, Inc.  All Rights Reserved

\ This defines the format of a packet for the ata/atapi interface

struct \ xfer-pkt
  4 field >xfer-type            \ Transfer type 0 = ATA, 1 = ATAPI
  4 field >cdb-ptr              \ pointer to cdb/reg struct
  4 field >transfer-bytes       \ number of bytes transferred
  4 field >data-ptr             \ address of data buffer.
  4 field >timeout              \ Timeout for xfer
  4 field >status               \ Status, set on errors
constant /xfer-pkt

: get-pkt-data ( pkt -- buffer cdb pkt )
   >r                                   ( -- )
   0 r@ >transfer-bytes l!              ( -- )
   0 r@ >status l!                      ( -- )
   r@ >data-ptr l@                      ( buffer )
   r@ >cdb-ptr l@                       ( buffer cdb )
   r>                                   ( buffer cdb pkt )
;

: set-pkt-data ( buffer cdb timeout pkt -- pkt )
   >r                                   ( buffer cdb timeout )
   r@ /xfer-pkt erase                   ( buffer cdb timeout )
   r@ >timeout l!                       ( buffer cdb )
   r@ >cdb-ptr l!                       ( buffer )
   r@ >data-ptr l!                      ( )
   r>                                   ( pkt )
;