C++ (Cpp) hw_unit_nr_size_cellsの例

コード例 #1

void
hw_add_reg_array_property (struct hw *me,
			   const char *property,
			   const reg_property_spec *regs,
			   unsigned nr_regs)
{
  unsigned sizeof_cells = (nr_reg_property_cells (me, nr_regs)
			   * sizeof (unsigned_cell));
  unsigned_cell *cells = hw_zalloc (me, sizeof_cells);
  unsigned_cell *cell;
  int i;
  
  /* copy the property elements over */
  cell = cells;
  for (i = 0; i < nr_regs; i++)
    {
      const reg_property_spec *reg = &regs[i];
      /* copy the address */
      cell = unit_address_to_cells (&reg->address, cell,
				    hw_unit_nr_address_cells (hw_parent (me)));
      /* copy the size */
      cell = unit_address_to_cells (&reg->size, cell,
				    hw_unit_nr_size_cells (hw_parent (me)));
    }
  ASSERT (cell == &cells[nr_reg_property_cells (me, nr_regs)]);
  
  /* add it */
  hw_add_property (me, property, reg_array_property,
		   cells, sizeof_cells,
		   cells, sizeof_cells,
		   NULL, permenant_object);
  
  hw_free (me, cells);
}

コード例 #2

static unsigned
nr_reg_property_cells (struct hw *me,
		       int nr_regs)
{
  return (hw_unit_nr_address_cells (hw_parent(me))
	  + hw_unit_nr_size_cells (hw_parent(me))
	  ) * nr_regs;
}

コード例 #3

int
hw_find_range_array_property (struct hw *me,
			      const char *property,
			      unsigned index,
			      range_property_spec *range)
{
  const struct hw_property *node;
  unsigned sizeof_entry = (nr_range_property_cells (me, 1)
			   * sizeof (unsigned_cell));
  const unsigned_cell *cells;
  
  /* locate the property */
  node = hw_find_property (me, property);
  if (node == NULL)
    hw_abort (me, "property \"%s\" not found", property);
  if (node->type != range_array_property)
    hw_abort (me, "property \"%s\" of wrong type (range array)", property);
  
  /* aligned ? */
  if ((node->sizeof_array % sizeof_entry) != 0)
    hw_abort (me, "property \"%s\" contains an incomplete number of entries",
	      property);
  
  /* within bounds? */
  if (node->sizeof_array < sizeof_entry * (index + 1))
    return 0;
  
  /* find the range of interest */
  cells = (unsigned_cell*)((char*)node->array + sizeof_entry * index);
  
  /* copy the child address out - converting as we go */
  cells = cells_to_unit_address (cells, &range->child_address,
				 hw_unit_nr_address_cells (me));
  
  /* copy the parent address out - converting as we go */
  cells = cells_to_unit_address (cells, &range->parent_address,
				 hw_unit_nr_address_cells (hw_parent (me)));
  
  /* copy the size - converting as we go */
  cells = cells_to_unit_address (cells, &range->size,
				 hw_unit_nr_size_cells (me));
  
  return node->sizeof_array / sizeof_entry;
}

コード例 #4

ファイル: hw-tree.c プロジェクト: Claruarius/stblinux-2.6.37

static const char *
parse_size (struct hw *current,
	    struct hw *bus,
	    const char *chp,
	    hw_unit *size)
{
  int i;
  int nr;
  const char *curr = chp;
  memset(size, 0, sizeof(*size));
  /* parse the numeric list */
  size->nr_cells = hw_unit_nr_size_cells (bus);
  nr = 0;
  while (1)
    {
      char *next;
      size->cells[nr] = strtoul (curr, &next, 0);
      if (curr == next)
	hw_abort (current, "Problem parsing <size> %s", chp);
      nr += 1;
      if (next[0] != ',')
	break;
      if (nr == size->nr_cells)
	hw_abort (current, "Too many values in <size> %s", chp);
      curr = next + 1;
    }
  ASSERT (nr > 0 && nr <= size->nr_cells);
  /* right align the numbers */
  for (i = 1; i <= size->nr_cells; i++)
    {
      if (i <= nr)
	size->cells[size->nr_cells - i] = size->cells[nr - i];
      else
	size->cells[size->nr_cells - i] = 0;
    }
  return skip_token (chp);
}