* relative to that node.
*/
static u64 __of_translate_address(struct device_node *dev,
+ struct device_node *(*get_parent)(const struct device_node *),
const __be32 *in_addr, const char *rprop,
struct device_node **host)
{
*host = NULL;
/* Get parent & match bus type */
- parent = of_get_parent(dev);
+ parent = get_parent(dev);
if (parent == NULL)
goto bail;
bus = of_match_bus(parent);
/* Switch to parent bus */
of_node_put(dev);
dev = parent;
- parent = of_get_parent(dev);
+ parent = get_parent(dev);
/* If root, we have finished */
if (parent == NULL) {
struct device_node *host;
u64 ret;
- ret = __of_translate_address(dev, in_addr, "ranges", &host);
+ ret = __of_translate_address(dev, of_get_parent,
+ in_addr, "ranges", &host);
if (host) {
of_node_put(host);
return OF_BAD_ADDR;
}
EXPORT_SYMBOL(of_translate_address);
+static struct device_node *__of_get_dma_parent(const struct device_node *np)
+{
+ struct of_phandle_args args;
+ int ret, index;
+
+ index = of_property_match_string(np, "interconnect-names", "dma-mem");
+ if (index < 0)
+ return of_get_parent(np);
+
+ ret = of_parse_phandle_with_args(np, "interconnects",
+ "#interconnect-cells",
+ index, &args);
+ if (ret < 0)
+ return of_get_parent(np);
+
+ return of_node_get(args.np);
+}
+
u64 of_translate_dma_address(struct device_node *dev, const __be32 *in_addr)
{
struct device_node *host;
u64 ret;
- ret = __of_translate_address(dev, in_addr, "dma-ranges", &host);
+ ret = __of_translate_address(dev, __of_get_dma_parent,
+ in_addr, "dma-ranges", &host);
if (host) {
of_node_put(host);
unsigned long port;
struct device_node *host;
- taddr = __of_translate_address(dev, in_addr, "ranges", &host);
+ taddr = __of_translate_address(dev, of_get_parent,
+ in_addr, "ranges", &host);
if (host) {
/* host-specific port access */
port = logic_pio_trans_hwaddr(&host->fwnode, taddr, size);
return -EINVAL;
while (1) {
+ struct device_node *parent;
+
naddr = of_n_addr_cells(node);
nsize = of_n_size_cells(node);
- node = of_get_next_parent(node);
+
+ parent = __of_get_dma_parent(node);
+ of_node_put(node);
+
+ node = parent;
if (!node)
break;