dm: core: Move dev_get_addr() etc. into a separate file

Move this group of address-related functions into a new file. These use
the flat device tree. Future work will provide new versions of these which
can support the live tree.

Signed-off-by: Simon Glass <sjg@chromium.org>

6 files changed, 255 insertions, 218 deletions

diff --git a/drivers/core/Makefile b/drivers/core/Makefile
index 07adb61c28..8261f14f45 100644
--- a/drivers/core/Makefile
+++ b/drivers/core/Makefile
@@ -4,7 +4,7 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y	+= device.o lists.o root.o uclass.o util.o
+obj-y	+= device.o fdtaddr.o lists.o root.o uclass.o util.o
 obj-$(CONFIG_DEVRES) += devres.o
 obj-$(CONFIG_$(SPL_)DM_DEVICE_REMOVE)	+= device-remove.o
 obj-$(CONFIG_$(SPL_)SIMPLE_BUS)	+= simple-bus.o
diff --git a/drivers/core/device.c b/drivers/core/device.c
index 09a115f753..483f8368f7 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -655,131 +655,6 @@ const char *dev_get_uclass_name(struct udevice *dev)
 	return dev->uclass->uc_drv->name;
 }
 
-fdt_addr_t dev_get_addr_index(struct udevice *dev, int index)
-{
-#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
-	fdt_addr_t addr;
-
-	if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
-		const fdt32_t *reg;
-		int len = 0;
-		int na, ns;
-
-		na = fdt_address_cells(gd->fdt_blob,
-				       dev_of_offset(dev->parent));
-		if (na < 1) {
-			debug("bad #address-cells\n");
-			return FDT_ADDR_T_NONE;
-		}
-
-		ns = fdt_size_cells(gd->fdt_blob, dev_of_offset(dev->parent));
-		if (ns < 0) {
-			debug("bad #size-cells\n");
-			return FDT_ADDR_T_NONE;
-		}
-
-		reg = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "reg",
-				  &len);
-		if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
-			debug("Req index out of range\n");
-			return FDT_ADDR_T_NONE;
-		}
-
-		reg += index * (na + ns);
-
-		/*
-		 * Use the full-fledged translate function for complex
-		 * bus setups.
-		 */
-		addr = fdt_translate_address((void *)gd->fdt_blob,
-					     dev_of_offset(dev), reg);
-	} else {
-		/*
-		 * Use the "simple" translate function for less complex
-		 * bus setups.
-		 */
-		addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
-				dev_of_offset(dev->parent), dev_of_offset(dev),
-				"reg", index, NULL, false);
-		if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
-			if (device_get_uclass_id(dev->parent) ==
-			    UCLASS_SIMPLE_BUS)
-				addr = simple_bus_translate(dev->parent, addr);
-		}
-	}
-
-	/*
-	 * Some platforms need a special address translation. Those
-	 * platforms (e.g. mvebu in SPL) can configure a translation
-	 * offset in the DM by calling dm_set_translation_offset() that
-	 * will get added to all addresses returned by dev_get_addr().
-	 */
-	addr += dm_get_translation_offset();
-
-	return addr;
-#else
-	return FDT_ADDR_T_NONE;
-#endif
-}
-
-fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index,
-				   fdt_size_t *size)
-{
-#if CONFIG_IS_ENABLED(OF_CONTROL)
-	/*
-	 * Only get the size in this first call. We'll get the addr in the
-	 * next call to the exisiting dev_get_xxx function which handles
-	 * all config options.
-	 */
-	fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
-					   "reg", index, size, false);
-
-	/*
-	 * Get the base address via the existing function which handles
-	 * all Kconfig cases
-	 */
-	return dev_get_addr_index(dev, index);
-#else
-	return FDT_ADDR_T_NONE;
-#endif
-}
-
-fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name)
-{
-#if CONFIG_IS_ENABLED(OF_CONTROL)
-	int index;
-
-	index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
-				      "reg-names", name);
-	if (index < 0)
-		return index;
-
-	return dev_get_addr_index(dev, index);
-#else
-	return FDT_ADDR_T_NONE;
-#endif
-}
-
-fdt_addr_t dev_get_addr(struct udevice *dev)
-{
-	return dev_get_addr_index(dev, 0);
-}
-
-void *dev_get_addr_ptr(struct udevice *dev)
-{
-	return (void *)(uintptr_t)dev_get_addr_index(dev, 0);
-}
-
-void *dev_map_physmem(struct udevice *dev, unsigned long size)
-{
-	fdt_addr_t addr = dev_get_addr(dev);
-
-	if (addr == FDT_ADDR_T_NONE)
-		return NULL;
-
-	return map_physmem(addr, size, MAP_NOCACHE);
-}
-
 bool device_has_children(struct udevice *dev)
 {
 	return !list_empty(&dev->child_head);
diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c
new file mode 100644
index 0000000000..a0578feb1b
--- /dev/null
+++ b/drivers/core/fdtaddr.c
@@ -0,0 +1,143 @@
+/*
+ * Device addresses
+ *
+ * Copyright (c) 2017 Google, Inc
+ *
+ * (C) Copyright 2012
+ * Pavel Herrmann <morpheus.ibis@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdt_support.h>
+#include <asm/io.h>
+#include <dm/device-internal.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+fdt_addr_t dev_get_addr_index(struct udevice *dev, int index)
+{
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
+	fdt_addr_t addr;
+
+	if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
+		const fdt32_t *reg;
+		int len = 0;
+		int na, ns;
+
+		na = fdt_address_cells(gd->fdt_blob,
+				       dev_of_offset(dev->parent));
+		if (na < 1) {
+			debug("bad #address-cells\n");
+			return FDT_ADDR_T_NONE;
+		}
+
+		ns = fdt_size_cells(gd->fdt_blob, dev_of_offset(dev->parent));
+		if (ns < 0) {
+			debug("bad #size-cells\n");
+			return FDT_ADDR_T_NONE;
+		}
+
+		reg = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "reg",
+				  &len);
+		if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
+			debug("Req index out of range\n");
+			return FDT_ADDR_T_NONE;
+		}
+
+		reg += index * (na + ns);
+
+		/*
+		 * Use the full-fledged translate function for complex
+		 * bus setups.
+		 */
+		addr = fdt_translate_address((void *)gd->fdt_blob,
+					     dev_of_offset(dev), reg);
+	} else {
+		/*
+		 * Use the "simple" translate function for less complex
+		 * bus setups.
+		 */
+		addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
+				dev_of_offset(dev->parent), dev_of_offset(dev),
+				"reg", index, NULL, false);
+		if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
+			if (device_get_uclass_id(dev->parent) ==
+			    UCLASS_SIMPLE_BUS)
+				addr = simple_bus_translate(dev->parent, addr);
+		}
+	}
+
+	/*
+	 * Some platforms need a special address translation. Those
+	 * platforms (e.g. mvebu in SPL) can configure a translation
+	 * offset in the DM by calling dm_set_translation_offset() that
+	 * will get added to all addresses returned by dev_get_addr().
+	 */
+	addr += dm_get_translation_offset();
+
+	return addr;
+#else
+	return FDT_ADDR_T_NONE;
+#endif
+}
+
+fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index,
+				   fdt_size_t *size)
+{
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+	/*
+	 * Only get the size in this first call. We'll get the addr in the
+	 * next call to the exisiting dev_get_xxx function which handles
+	 * all config options.
+	 */
+	fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
+					   "reg", index, size, false);
+
+	/*
+	 * Get the base address via the existing function which handles
+	 * all Kconfig cases
+	 */
+	return dev_get_addr_index(dev, index);
+#else
+	return FDT_ADDR_T_NONE;
+#endif
+}
+
+fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name)
+{
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+	int index;
+
+	index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
+				      "reg-names", name);
+	if (index < 0)
+		return index;
+
+	return dev_get_addr_index(dev, index);
+#else
+	return FDT_ADDR_T_NONE;
+#endif
+}
+
+fdt_addr_t dev_get_addr(struct udevice *dev)
+{
+	return dev_get_addr_index(dev, 0);
+}
+
+void *dev_get_addr_ptr(struct udevice *dev)
+{
+	return (void *)(uintptr_t)dev_get_addr_index(dev, 0);
+}
+
+void *dev_map_physmem(struct udevice *dev, unsigned long size)
+{
+	fdt_addr_t addr = dev_get_addr(dev);
+
+	if (addr == FDT_ADDR_T_NONE)
+		return NULL;
+
+	return map_physmem(addr, size, MAP_NOCACHE);
+}
diff --git a/include/dm.h b/include/dm.h
index a179c8a6e3..84f789d807 100644
--- a/include/dm.h
+++ b/include/dm.h
@@ -8,6 +8,7 @@
 #define _DM_H_
 
 #include <dm/device.h>
+#include <dm/fdtaddr.h>
 #include <dm/platdata.h>
 #include <dm/uclass.h>
 
diff --git a/include/dm/device.h b/include/dm/device.h
index df02e41df3..361cdaee48 100644
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -499,77 +499,6 @@ int device_find_first_child(struct udevice *parent, struct udevice **devp);
 int device_find_next_child(struct udevice **devp);
 
 /**
- * dev_get_addr() - Get the reg property of a device
- *
- * @dev: Pointer to a device
- *
- * @return addr
- */
-fdt_addr_t dev_get_addr(struct udevice *dev);
-
-/**
- * dev_get_addr_ptr() - Return pointer to the address of the reg property
- *                      of a device
- *
- * @dev: Pointer to a device
- *
- * @return Pointer to addr, or NULL if there is no such property
- */
-void *dev_get_addr_ptr(struct udevice *dev);
-
-/**
- * dev_map_physmem() - Read device address from reg property of the
- *                     device node and map the address into CPU address
- *                     space.
- *
- * @dev: Pointer to device
- * @size: size of the memory to map
- *
- * @return  mapped address, or NULL if the device does not have reg
- *          property.
- */
-void *dev_map_physmem(struct udevice *dev, unsigned long size);
-
-/**
- * dev_get_addr_index() - Get the indexed reg property of a device
- *
- * @dev: Pointer to a device
- * @index: the 'reg' property can hold a list of <addr, size> pairs
- *	   and @index is used to select which one is required
- *
- * @return addr
- */
-fdt_addr_t dev_get_addr_index(struct udevice *dev, int index);
-
-/**
- * dev_get_addr_size_index() - Get the indexed reg property of a device
- *
- * Returns the address and size specified in the 'reg' property of a device.
- *
- * @dev: Pointer to a device
- * @index: the 'reg' property can hold a list of <addr, size> pairs
- *	   and @index is used to select which one is required
- * @size: Pointer to size varible - this function returns the size
- *        specified in the 'reg' property here
- *
- * @return addr
- */
-fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index,
-				   fdt_size_t *size);
-
-/**
- * dev_get_addr_name() - Get the reg property of a device, indexed by name
- *
- * @dev: Pointer to a device
- * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
- *	  'reg-names' property providing named-based identification. @index
- *	  indicates the value to search for in 'reg-names'.
- *
- * @return addr
- */
-fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name);
-
-/**
  * device_has_children() - check if a device has any children
  *
  * @dev:	Device to check
@@ -944,25 +873,4 @@ static inline void devm_kfree(struct udevice *dev, void *ptr)
 
 #endif /* ! CONFIG_DEVRES */
 
-/**
- * dm_set_translation_offset() - Set translation offset
- * @offs: Translation offset
- *
- * Some platforms need a special address translation. Those
- * platforms (e.g. mvebu in SPL) can configure a translation
- * offset in the DM by calling this function. It will be
- * added to all addresses returned in dev_get_addr().
- */
-void dm_set_translation_offset(fdt_addr_t offs);
-
-/**
- * dm_get_translation_offset() - Get translation offset
- *
- * This function returns the translation offset that can
- * be configured by calling dm_set_translation_offset().
- *
- * @return translation offset for the device address (0 as default).
- */
-fdt_addr_t dm_get_translation_offset(void);
-
 #endif
diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h
new file mode 100644
index 0000000000..fd05b6fe95
--- /dev/null
+++ b/include/dm/fdtaddr.h
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2017 Google, Inc
+ *
+ * (C) Copyright 2012
+ * Pavel Herrmann <morpheus.ibis@gmail.com>
+ * Marek Vasut <marex@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _DM_ADDR_H
+#define _DM_ADDR_H
+
+#include <fdtdec.h>
+
+struct udevice;
+
+/**
+ * dev_get_addr() - Get the reg property of a device
+ *
+ * @dev: Pointer to a device
+ *
+ * @return addr
+ */
+fdt_addr_t dev_get_addr(struct udevice *dev);
+
+/**
+ * dev_get_addr_ptr() - Return pointer to the address of the reg property
+ *                      of a device
+ *
+ * @dev: Pointer to a device
+ *
+ * @return Pointer to addr, or NULL if there is no such property
+ */
+void *dev_get_addr_ptr(struct udevice *dev);
+
+/**
+ * dev_map_physmem() - Read device address from reg property of the
+ *                     device node and map the address into CPU address
+ *                     space.
+ *
+ * @dev: Pointer to device
+ * @size: size of the memory to map
+ *
+ * @return  mapped address, or NULL if the device does not have reg
+ *          property.
+ */
+void *dev_map_physmem(struct udevice *dev, unsigned long size);
+
+/**
+ * dev_get_addr_index() - Get the indexed reg property of a device
+ *
+ * @dev: Pointer to a device
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ *	   and @index is used to select which one is required
+ *
+ * @return addr
+ */
+fdt_addr_t dev_get_addr_index(struct udevice *dev, int index);
+
+/**
+ * dev_get_addr_size_index() - Get the indexed reg property of a device
+ *
+ * Returns the address and size specified in the 'reg' property of a device.
+ *
+ * @dev: Pointer to a device
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ *	   and @index is used to select which one is required
+ * @size: Pointer to size varible - this function returns the size
+ *        specified in the 'reg' property here
+ *
+ * @return addr
+ */
+fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index,
+				   fdt_size_t *size);
+
+/**
+ * dev_get_addr_name() - Get the reg property of a device, indexed by name
+ *
+ * @dev: Pointer to a device
+ * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
+ *	  'reg-names' property providing named-based identification. @index
+ *	  indicates the value to search for in 'reg-names'.
+ *
+ * @return addr
+ */
+fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name);
+
+/**
+ * dm_set_translation_offset() - Set translation offset
+ * @offs: Translation offset
+ *
+ * Some platforms need a special address translation. Those
+ * platforms (e.g. mvebu in SPL) can configure a translation
+ * offset in the DM by calling this function. It will be
+ * added to all addresses returned in dev_get_addr().
+ */
+void dm_set_translation_offset(fdt_addr_t offs);
+
+/**
+ * dm_get_translation_offset() - Get translation offset
+ *
+ * This function returns the translation offset that can
+ * be configured by calling dm_set_translation_offset().
+ *
+ * @return translation offset for the device address (0 as default).
+ */
+fdt_addr_t dm_get_translation_offset(void);
+
+#endif