mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 17:01:14 +00:00
62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
118 lines
3.3 KiB
Diff
118 lines
3.3 KiB
Diff
From 839aeedc908eb729b9014e7d1d38e109778a52d2 Mon Sep 17 00:00:00 2001
|
|
From: Robin Murphy <robin.murphy@arm.com>
|
|
Date: Tue, 2 Jul 2019 18:42:39 +0100
|
|
Subject: [PATCH] of: Factor out #{addr,size}-cells parsing
|
|
|
|
In some cases such as PCI host controllers, we may have a "parent bus"
|
|
which is an OF leaf node, but still need to correctly parse ranges from
|
|
the point of view of that bus. For that, factor out variants of the
|
|
"#addr-cells" and "#size-cells" parsers which do not assume they have a
|
|
device node and thus immediately traverse upwards before reading the
|
|
relevant property.
|
|
|
|
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
|
|
[robh: don't make of_bus_n_{addr,size}_cells() public]
|
|
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
|
|
Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
|
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
|
Signed-off-by: Rob Herring <robh@kernel.org>
|
|
|
|
(cherry picked from commit b68ac8dc22ebbf003e26e44bf4dd3030c076df5a)
|
|
---
|
|
drivers/of/address.c | 2 ++
|
|
drivers/of/base.c | 32 ++++++++++++++++++++++----------
|
|
drivers/of/of_private.h | 14 ++++++++++++++
|
|
3 files changed, 38 insertions(+), 10 deletions(-)
|
|
|
|
--- a/drivers/of/address.c
|
|
+++ b/drivers/of/address.c
|
|
@@ -14,6 +14,8 @@
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
|
|
+#include "of_private.h"
|
|
+
|
|
/* Max address size we deal with */
|
|
#define OF_MAX_ADDR_CELLS 4
|
|
#define OF_CHECK_ADDR_COUNT(na) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS)
|
|
--- a/drivers/of/base.c
|
|
+++ b/drivers/of/base.c
|
|
@@ -86,34 +86,46 @@ static bool __of_node_is_type(const stru
|
|
return np && match && type && !strcmp(match, type);
|
|
}
|
|
|
|
-int of_n_addr_cells(struct device_node *np)
|
|
+int of_bus_n_addr_cells(struct device_node *np)
|
|
{
|
|
u32 cells;
|
|
|
|
- do {
|
|
- if (np->parent)
|
|
- np = np->parent;
|
|
+ for (; np; np = np->parent)
|
|
if (!of_property_read_u32(np, "#address-cells", &cells))
|
|
return cells;
|
|
- } while (np->parent);
|
|
+
|
|
/* No #address-cells property for the root node */
|
|
return OF_ROOT_NODE_ADDR_CELLS_DEFAULT;
|
|
}
|
|
+
|
|
+int of_n_addr_cells(struct device_node *np)
|
|
+{
|
|
+ if (np->parent)
|
|
+ np = np->parent;
|
|
+
|
|
+ return of_bus_n_addr_cells(np);
|
|
+}
|
|
EXPORT_SYMBOL(of_n_addr_cells);
|
|
|
|
-int of_n_size_cells(struct device_node *np)
|
|
+int of_bus_n_size_cells(struct device_node *np)
|
|
{
|
|
u32 cells;
|
|
|
|
- do {
|
|
- if (np->parent)
|
|
- np = np->parent;
|
|
+ for (; np; np = np->parent)
|
|
if (!of_property_read_u32(np, "#size-cells", &cells))
|
|
return cells;
|
|
- } while (np->parent);
|
|
+
|
|
/* No #size-cells property for the root node */
|
|
return OF_ROOT_NODE_SIZE_CELLS_DEFAULT;
|
|
}
|
|
+
|
|
+int of_n_size_cells(struct device_node *np)
|
|
+{
|
|
+ if (np->parent)
|
|
+ np = np->parent;
|
|
+
|
|
+ return of_bus_n_size_cells(np);
|
|
+}
|
|
EXPORT_SYMBOL(of_n_size_cells);
|
|
|
|
#ifdef CONFIG_NUMA
|
|
--- a/drivers/of/of_private.h
|
|
+++ b/drivers/of/of_private.h
|
|
@@ -158,4 +158,18 @@ extern void __of_sysfs_remove_bin_file(s
|
|
#define for_each_transaction_entry_reverse(_oft, _te) \
|
|
list_for_each_entry_reverse(_te, &(_oft)->te_list, node)
|
|
|
|
+extern int of_bus_n_addr_cells(struct device_node *np);
|
|
+extern int of_bus_n_size_cells(struct device_node *np);
|
|
+
|
|
+#ifdef CONFIG_OF_ADDRESS
|
|
+extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
|
|
+ u64 *paddr, u64 *size);
|
|
+#else
|
|
+static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr,
|
|
+ u64 *paddr, u64 *size)
|
|
+{
|
|
+ return -ENODEV;
|
|
+}
|
|
+#endif
|
|
+
|
|
#endif /* _LINUX_OF_PRIVATE_H */
|