diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-08-26 17:33:54 +0200 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2014-10-11 01:07:06 +0200 |
| commit | 6cdbbe34d7e3a76048cfe06f6578ed2b6ea30376 (patch) | |
| tree | 840e06feb96fe4bc30bc25cb6a22d4831f5ff875 /lib | |
| parent | 40f1a5cf09b715af8dca1fa99419014ae44b8b2d (diff) | |
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 'lib')
| -rw-r--r-- | lib/fdtdec.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/fdtdec.c b/lib/fdtdec.c index b3c43be89d5..4f66ae172fe 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -765,4 +765,18 @@ int fdt_get_named_resource(const void *fdt, int node, const char *property, return fdt_get_resource(fdt, node, property, index, res); } + +int fdtdec_pci_get_bdf(const void *fdt, int node, int *bdf) +{ + const fdt32_t *prop; + int len; + + prop = fdt_getprop(fdt, node, "reg", &len); + if (!prop) + return len; + + *bdf = fdt32_to_cpu(*prop) & 0xffffff; + + return 0; +} #endif |