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authorSteven Whitehouse <swhiteho@redhat.com>2006-09-25 12:26:59 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2006-09-25 12:26:59 -0400
commit363e065c02b1273364d5356711a83e7f548fc0c8 (patch)
tree0df0e65da403ade33ade580c2770c97437b1b1af /include/asm-powerpc/rtas.h
parent907b9bceb41fa46beae93f79cc4a2247df502c0f (diff)
parent7c250413e5b7c3dfae89354725b70c76d7621395 (diff)
[GFS2] Fix up merge of Linus' kernel into GFS2
This fixes up a couple of conflicts when merging up with Linus' latest kernel. This will hopefully allow GFS2 to be more easily merged into forthcoming -mm and FC kernels due to the "one line per header" format now used for the kernel headers. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Conflicts: include/linux/Kbuild include/linux/kernel.h
Diffstat (limited to 'include/asm-powerpc/rtas.h')
-rw-r--r--include/asm-powerpc/rtas.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/asm-powerpc/rtas.h b/include/asm-powerpc/rtas.h
index 82a27e9a041f..d34f9e1f242c 100644
--- a/include/asm-powerpc/rtas.h
+++ b/include/asm-powerpc/rtas.h
@@ -230,5 +230,21 @@ extern unsigned long rtas_rmo_buf;
#define GLOBAL_INTERRUPT_QUEUE 9005
+/**
+ * rtas_config_addr - Format a busno, devfn and reg for RTAS.
+ * @busno: The bus number.
+ * @devfn: The device and function number as encoded by PCI_DEVFN().
+ * @reg: The register number.
+ *
+ * This function encodes the given busno, devfn and register number as
+ * required for RTAS calls that take a "config_addr" parameter.
+ * See PAPR requirement 7.3.4-1 for more info.
+ */
+static inline u32 rtas_config_addr(int busno, int devfn, int reg)
+{
+ return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) |
+ (devfn << 8) | (reg & 0xff);
+}
+
#endif /* __KERNEL__ */
#endif /* _POWERPC_RTAS_H */