commit d7a88c7eb46acb486922822eec3224c0bcab29dc
author Benjamin Herrenschmidt <benh@kernel.crashing.org> Thu Oct 10 19:18:02 2013 +1100
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> Wed Nov 06 14:13:49 2013 +1100
tree 8f52d8786168579b156cf982a61c7e51e4799405
parent 44790a0b93d8481a8dc5bf6aa600941627b56d56

powerpc/scom: Enable 64-bit addresses

On P8, XSCOM addresses has a special "indirect" form that
requires more than 32-bits, so let's use u64 everywhere in
the code instead of u32.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/scom.h

diff --git a/arch/powerpc/include/asm/scom.h b/arch/powerpc/include/asm/scom.h
index 07dcdcf..f5cde45 100644
--- a/arch/powerpc/include/asm/scom.h
+++ b/arch/powerpc/include/asm/scom.h
@@ -54,8 +54,8 @@
 	scom_map_t (*map)(struct device_node *ctrl_dev, u64 reg, u64 count);
 	void (*unmap)(scom_map_t map);
 
-	int (*read)(scom_map_t map, u32 reg, u64 *value);
-	int (*write)(scom_map_t map, u32 reg, u64 value);
+	int (*read)(scom_map_t map, u64 reg, u64 *value);
+	int (*write)(scom_map_t map, u64 reg, u64 value);
 };
 
 extern const struct scom_controller *scom_controller;
@@ -137,7 +137,7 @@
  *
  * Returns 0 (success) or a negative error code
  */
-static inline int scom_read(scom_map_t map, u32 reg, u64 *value)
+static inline int scom_read(scom_map_t map, u64 reg, u64 *value)
 {
 	int rc;
 
@@ -155,7 +155,7 @@
  *
  * Returns 0 (success) or a negative error code
  */
-static inline int scom_write(scom_map_t map, u32 reg, u64 value)
+static inline int scom_write(scom_map_t map, u64 reg, u64 value)
 {
 	return scom_controller->write(map, reg, value);
 }

arch/powerpc/platforms/powernv/opal-xscom.c

diff --git a/arch/powerpc/platforms/powernv/opal-xscom.c b/arch/powerpc/platforms/powernv/opal-xscom.c
index 3ed5c64..09a90d8 100644
--- a/arch/powerpc/platforms/powernv/opal-xscom.c
+++ b/arch/powerpc/platforms/powernv/opal-xscom.c
@@ -27,7 +27,7 @@
  */
 struct opal_scom_map {
 	uint32_t chip;
-	uint32_t addr;
+	uint64_t addr;
 };
 
 static scom_map_t opal_scom_map(struct device_node *dev, u64 reg, u64 count)
@@ -71,7 +71,7 @@
 	}
 }
 
-static int opal_scom_read(scom_map_t map, u32 reg, u64 *value)
+static int opal_scom_read(scom_map_t map, u64 reg, u64 *value)
 {
 	struct opal_scom_map *m = map;
 	int64_t rc;
@@ -80,7 +80,7 @@
 	return opal_xscom_err_xlate(rc);
 }
 
-static int opal_scom_write(scom_map_t map, u32 reg, u64 value)
+static int opal_scom_write(scom_map_t map, u64 reg, u64 value)
 {
 	struct opal_scom_map *m = map;
 	int64_t rc;

arch/powerpc/platforms/wsp/scom_wsp.c

diff --git a/arch/powerpc/platforms/wsp/scom_wsp.c b/arch/powerpc/platforms/wsp/scom_wsp.c
index 54172c4..8928507 100644
--- a/arch/powerpc/platforms/wsp/scom_wsp.c
+++ b/arch/powerpc/platforms/wsp/scom_wsp.c
@@ -50,7 +50,7 @@
 	iounmap((void *)map);
 }
 
-static int wsp_scom_read(scom_map_t map, u32 reg, u64 *value)
+static int wsp_scom_read(scom_map_t map, u64 reg, u64 *value)
 {
 	u64 __iomem *addr = (u64 __iomem *)map;
 
@@ -59,7 +59,7 @@
 	return 0;
 }
 
-static int wsp_scom_write(scom_map_t map, u32 reg, u64 value)
+static int wsp_scom_write(scom_map_t map, u64 reg, u64 value)
 {
 	u64 __iomem *addr = (u64 __iomem *)map;