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authorThierry Reding <treding@nvidia.com>2014-08-26 17:33:54 +0200
committerSimon Glass <sjg@chromium.org>2014-10-22 16:56:41 -0600
commit9f85eee72a2a3918b2d5cd7b1bf88da69232dede (patch)
tree18ad49344920b3e9721550b4172f623f126412f9 /include/fdtdec.h
parent56f42242f020254ea1c383694edb072e3a5ca6d6 (diff)
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fdt: Add a function to return PCI BDF triplet
The fdtdec_pci_get_bdf() function returns the bus, device, function triplet of a PCI device by parsing the "reg" property according to the PCI device tree binding. Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include/fdtdec.h')
-rw-r--r--include/fdtdec.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/fdtdec.h b/include/fdtdec.h
index 8b24deb..99cb353 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -649,4 +649,15 @@ int fdt_get_named_resource(const void *fdt, int node, const char *property,
const char *prop_names, const char *name,
struct fdt_resource *res);
+/**
+ * Look at the reg property of a device node that represents a PCI device
+ * and parse the bus, device and function number from it.
+ *
+ * @param fdt FDT blob
+ * @param node node to examine
+ * @param bdf returns bus, device, function triplet
+ * @return 0 if ok, negative on error
+ */
+int fdtdec_pci_get_bdf(const void *fdt, int node, int *bdf);
+
#endif