rom/usb/pciusbhc/ohci/buffer.c

   1 /*
   2    Copyright © 2002-2009, Chris Hodges. All rights reserved.
   3    Copyright © 2009-2012, The AROS Development Team. All rights reserved.
   4    $Id$
   5  */
   6
   7 #include <devices/usbhardware.h>
   8 #include <exec/memory.h>
   9
  10 #include <proto/exec.h>
  11
  12 #if __WORDSIZE == 64
  13
  14 APTR usbGetBuffer(APTR data, ULONG len, UWORD dir)
  15 {
  16     APTR ret = data;
  17
  18     if (((IPTR) data + len - 1) >> 32)
  19     {
  20         ret = AllocVec(len, MEMF_31BIT | MEMF_PUBLIC);
  21
  22         if (ret && (dir == UHDIR_OUT))
  23             CopyMem(data, ret, len);
  24     }
  25
  26     return ret;
  27 }
  28
  29 void usbReleaseBuffer(APTR buffer, APTR data, ULONG len, UWORD dir)
  30 {
  31     if (buffer && (buffer != data))
  32     {
  33         if (len && (dir == UHDIR_IN))
  34             CopyMem(buffer, data, len);
  35
  36         FreeVec(buffer);
  37     }
  38 }
  39
  40 #endif