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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-07-15 13:03:11 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-08-14 14:58:08 +1000
commit3fafe9c202321a3edc47386d2071af89555c9f45 (patch)
tree7a809f8ab83049c69468e4c0a64f1ef977934d6a /arch/powerpc/kernel/io.c
parentb37193b71846858d816e152d3a5db010d7b73f5e (diff)
powerpc/powernv: Add PIO accessors for Power8 LPC bus
This uses the hooks provided by CONFIG_PPC_INDIRECT_PIO to implement a set of hooks for IO port access to use the LPC bus via OPAL calls for the first 64K of IO space Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/io.c')
-rw-r--r--arch/powerpc/kernel/io.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/io.c b/arch/powerpc/kernel/io.c
index 886381f32c3..2a2b4aeab80 100644
--- a/arch/powerpc/kernel/io.c
+++ b/arch/powerpc/kernel/io.c
@@ -25,6 +25,9 @@
#include <asm/firmware.h>
#include <asm/bug.h>
+/* See definition in io.h */
+bool isa_io_special;
+
void _insb(const volatile u8 __iomem *port, void *buf, long count)
{
u8 *tbuf = buf;