From 30a90f56c3a20da0456e09e6e665b648719b8935 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sun, 29 Apr 2018 21:56:54 +0200
Subject: [PATCH] dm: core: add functions to get memory-mapped I/O addresses
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Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
drivers/core/fdtaddr.c | 15 +++++++++++++++
drivers/core/read.c | 17 +++++++++++++++++
include/dm/fdtaddr.h | 22 ++++++++++++++++++++++
include/dm/read.h | 32 ++++++++++++++++++++++++++++++++
test/dm/test-fdt.c | 42 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 128 insertions(+)
diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c
index 528cf47296..f8cdbd6688 100644
--- a/drivers/core/fdtaddr.c
+++ b/drivers/core/fdtaddr.c
@@ -136,6 +136,21 @@ void *devfdt_get_addr_ptr(struct udevice *dev)
return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
}
+void *devfdt_remap_addr_index(struct udevice *dev, int index)
+{
+ fdt_addr_t addr = devfdt_get_addr(dev);
+
+ if (addr == FDT_ADDR_T_NONE)
+ return NULL;
+
+ return map_physmem(addr, 0, MAP_NOCACHE);
+}
+
+void *devfdt_remap_addr(struct udevice *dev)
+{
+ return devfdt_remap_addr_index(dev, 0);
+}
+
void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
{
fdt_addr_t addr = devfdt_get_addr(dev);
diff --git a/drivers/core/read.c b/drivers/core/read.c
index 0322cbf330..96766c7876 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -4,6 +4,8 @@
* Written by Simon Glass <sjg@chromium.org>
*/
+#include <asm/types.h>
+#include <asm/io.h>
#include <common.h>
#include <dm.h>
#include <mapmem.h>
@@ -57,6 +59,16 @@ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index)
return devfdt_get_addr_index(dev, index);
}
+void *dev_remap_addr_index(struct udevice *dev, int index)
+{
+ fdt_addr_t addr = dev_read_addr_index(dev, index);
+
+ if (addr == FDT_ADDR_T_NONE)
+ return NULL;
+
+ return map_physmem(addr, 0, MAP_NOCACHE);
+}
+
fdt_addr_t dev_read_addr(struct udevice *dev)
{
return dev_read_addr_index(dev, 0);
@@ -69,6 +81,11 @@ void *dev_read_addr_ptr(struct udevice *dev)
return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0);
}
+void *dev_remap_addr(struct udevice *dev)
+{
+ return dev_remap_addr_index(dev, 0);
+}
+
fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
fdt_size_t *sizep)
{
diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h
index db4c11e083..49a6ffd5f8 100644
--- a/include/dm/fdtaddr.h
+++ b/include/dm/fdtaddr.h
@@ -33,6 +33,28 @@ fdt_addr_t devfdt_get_addr(struct udevice *dev);
*/
void *devfdt_get_addr_ptr(struct udevice *dev);
+/**
+ * devfdt_remap_addr() - Return pointer to the memory-mapped I/O 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 *devfdt_remap_addr(struct udevice *dev);
+
+/**
+ * devfdt_remap_addr_index() - Return indexed pointer to the memory-mapped
+ * I/O address of the reg property of a device
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ * and @index is used to select which one is required
+ *
+ * @dev: Pointer to a device
+ *
+ * @return Pointer to addr, or NULL if there is no such property
+ */
+void *devfdt_remap_addr_index(struct udevice *dev, int index);
+
/**
* devfdt_map_physmem() - Read device address from reg property of the
* device node and map the address into CPU address
diff --git a/include/dm/read.h b/include/dm/read.h
index 4a725bc923..a27b8554fb 100644
--- a/include/dm/read.h
+++ b/include/dm/read.h
@@ -112,6 +112,18 @@ int dev_read_size(struct udevice *dev, const char *propname);
*/
fdt_addr_t dev_read_addr_index(struct udevice *dev, int index);
+/**
+ * dev_remap_addr_index() - Get the indexed reg property of a device
+ * as a memory-mapped I/O pointer
+ *
+ * @dev: Device to read from
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ * and @index is used to select which one is required
+ *
+ * @return pointer or NULL if not found
+ */
+void *dev_remap_addr_index(struct udevice *dev, int index);
+
/**
* dev_read_addr() - Get the reg property of a device
*
@@ -131,6 +143,16 @@ fdt_addr_t dev_read_addr(struct udevice *dev);
*/
void *dev_read_addr_ptr(struct udevice *dev);
+/**
+ * dev_remap_addr() - Get the reg property of a device as a
+ * memory-mapped I/O pointer
+ *
+ * @dev: Device to read from
+ *
+ * @return pointer or NULL if not found
+ */
+void *dev_remap_addr(struct udevice *dev);
+
/**
* dev_read_addr_size() - get address and size from a device property
*
@@ -482,6 +504,16 @@ static inline void *dev_read_addr_ptr(struct udevice *dev)
return devfdt_get_addr_ptr(dev);
}
+static inline void *dev_remap_addr(struct udevice *dev)
+{
+ return devfdt_remap_addr(dev);
+}
+
+static inline void *dev_remap_addr_index(struct udevice *dev, int index)
+{
+ return devfdt_remap_addr_index(dev, index);
+}
+
static inline fdt_addr_t dev_read_addr_size(struct udevice *dev,
const char *propname,
fdt_size_t *sizep)
diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c
index 8196844e89..552d700935 100644
--- a/test/dm/test-fdt.c
+++ b/test/dm/test-fdt.c
@@ -461,3 +461,45 @@ static int dm_test_fdt_translation(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_fdt_translation, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test devfdt_remap_addr_index() */
+static int dm_test_fdt_remap_addr_flat(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+ fdt_addr_t addr;
+ void *paddr;
+
+ ut_assertok(uclass_find_device_by_seq(UCLASS_TEST_DUMMY, 0, true, &dev));
+
+ addr = devfdt_get_addr(dev);
+ ut_asserteq(0x8000, addr);
+
+ paddr = map_physmem(addr, 0, MAP_NOCACHE);
+ ut_assertnonnull(paddr);
+ ut_asserteq_ptr(paddr, devfdt_remap_addr(dev));
+
+ return 0;
+}
+DM_TEST(dm_test_fdt_remap_addr_flat,
+ DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT | DM_TESTF_FLAT_TREE);
+
+/* Test dev_remap_addr_index() */
+static int dm_test_fdt_remap_addr_live(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+ fdt_addr_t addr;
+ void *paddr;
+
+ ut_assertok(uclass_find_device_by_seq(UCLASS_TEST_DUMMY, 0, true, &dev));
+
+ addr = dev_read_addr(dev);
+ ut_asserteq(0x8000, addr);
+
+ paddr = map_physmem(addr, 0, MAP_NOCACHE);
+ ut_assertnonnull(paddr);
+ ut_asserteq_ptr(paddr, dev_remap_addr(dev));
+
+ return 0;
+}
+DM_TEST(dm_test_fdt_remap_addr_live,
+ DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);