+++ /dev/null
-From 6f8e5369ae054ec6c9265581d5a7e39738a5cd84 Mon Sep 17 00:00:00 2001
-From: Ansuel Smith <ansuelsmth@gmail.com>
-Date: Tue, 30 Mar 2021 13:16:38 +0200
-Subject: [PATCH 1/2] NET: add mtd-mac-address support to of_get_mac_address()
-
-Many embedded devices have information such as mac addresses stored inside mtd
-devices. This patch allows us to add a property inside a node describing a
-network interface. The new property points at a mtd partition with an offset
-where the mac address can be found.
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
----
- drivers/of/of_net.c | 75 ++++++++++++++++++++++++++++++++++++++++++++-
- 1 file changed, 74 insertions(+), 1 deletion(-)
-
---- a/drivers/of/of_net.c
-+++ b/drivers/of/of_net.c
-@@ -12,6 +12,7 @@
- #include <linux/export.h>
- #include <linux/device.h>
- #include <linux/nvmem-consumer.h>
-+#include <linux/mtd/mtd.h>
-
- /**
- * of_get_phy_mode - Get phy mode for given device_node
-@@ -95,6 +96,52 @@ static int of_get_mac_addr_nvmem(struct
- return 0;
- }
-
-+static int of_get_mac_address_mtd(struct device_node *np, u8 *addr)
-+{
-+#ifdef CONFIG_MTD
-+ struct platform_device *pdev = of_find_device_by_node(np);
-+ struct device_node *mtd_np = NULL;
-+ size_t retlen;
-+ int size, ret;
-+ struct mtd_info *mtd;
-+ const char *part;
-+ const __be32 *list;
-+ phandle phandle;
-+ u8 mac[ETH_ALEN];
-+
-+ list = of_get_property(np, "mtd-mac-address", &size);
-+ if (!list || (size != (2 * sizeof(*list))))
-+ return -ENODEV;
-+
-+ phandle = be32_to_cpup(list++);
-+ if (phandle)
-+ mtd_np = of_find_node_by_phandle(phandle);
-+
-+ if (!mtd_np)
-+ return -ENODEV;
-+
-+ part = of_get_property(mtd_np, "label", NULL);
-+ if (!part)
-+ part = mtd_np->name;
-+
-+ mtd = get_mtd_device_nm(part);
-+ if (IS_ERR(mtd))
-+ return -ENODEV;
-+
-+ ret = mtd_read(mtd, be32_to_cpup(list), 6, &retlen, mac);
-+ put_mtd_device(mtd);
-+
-+ if (!is_valid_ether_addr(mac))
-+ return -EINVAL;
-+
-+ memcpy(addr, mac, ETH_ALEN);
-+
-+ return 0;
-+#endif
-+ return -EINVAL;
-+}
-+
-+
- /**
- * Search the device tree for the best MAC address to use. 'mac-address' is
- * checked first, because that is supposed to contain to "most recent" MAC
-@@ -115,6 +162,10 @@ static int of_get_mac_addr_nvmem(struct
- * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
- * but is all zeros.
- *
-+ *
-+ * If a mtd-mac-address property exists, try to fetch the MAC address from the
-+ * specified mtd device.
-+ *
- * Return: 0 on success and errno in case of error.
- */
- int of_get_mac_address(struct device_node *np, u8 *addr)
-@@ -136,6 +187,10 @@ int of_get_mac_address(struct device_nod
- if (!ret)
- return 0;
-
-+ ret = of_get_mac_address_mtd(np, addr);
-+ if (!ret)
-+ return 0;
-+
- return of_get_mac_addr_nvmem(np, addr);
- }
- EXPORT_SYMBOL(of_get_mac_address);
--- a/drivers/of/of_net.c
+++ b/drivers/of/of_net.c
-@@ -166,31 +166,56 @@ static int of_get_mac_address_mtd(struct
- * If a mtd-mac-address property exists, try to fetch the MAC address from the
- * specified mtd device.
+@@ -115,27 +115,52 @@ static int of_get_mac_addr_nvmem(struct
+ * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
+ * but is all zeros.
*
+ * DT can tell the system to increment the mac-address after is extracted by
+ * using:
ret = of_get_mac_addr(np, "address", addr);
if (!ret)
- return 0;
-+ goto found;
-
- ret = of_get_mac_address_mtd(np, addr);
- if (!ret)
-- return 0;
+ goto found;
+
+ ret = of_get_mac_addr_nvmem(np, addr);
--- a/drivers/of/of_net.c
+++ b/drivers/of/of_net.c
-@@ -141,6 +141,26 @@ static int of_get_mac_address_mtd(struct
- return -EINVAL;
+@@ -95,6 +95,27 @@ static int of_get_mac_addr_nvmem(struct
+ return 0;
}
+static int of_add_mac_address(struct device_node *np, u8* addr)
+ kfree(prop);
+ return -ENOMEM;
+}
-
++
/**
* Search the device tree for the best MAC address to use. 'mac-address' is
-@@ -216,6 +236,7 @@ found:
+ * checked first, because that is supposed to contain to "most recent" MAC
+@@ -161,6 +182,7 @@ found:
if (!of_property_read_u32(np, "mac-address-increment", &mac_inc))
addr[inc_idx] += mac_inc;
+++ /dev/null
-From 6f8e5369ae054ec6c9265581d5a7e39738a5cd84 Mon Sep 17 00:00:00 2001
-From: Ansuel Smith <ansuelsmth@gmail.com>
-Date: Tue, 30 Mar 2021 13:16:38 +0200
-Subject: [PATCH 1/2] NET: add mtd-mac-address support to of_get_mac_address()
-
-Many embedded devices have information such as mac addresses stored inside mtd
-devices. This patch allows us to add a property inside a node describing a
-network interface. The new property points at a mtd partition with an offset
-where the mac address can be found.
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
----
- drivers/of/of_net.c | 75 ++++++++++++++++++++++++++++++++++++++++++++-
- 1 file changed, 74 insertions(+), 1 deletion(-)
-
---- a/drivers/of/of_net.c
-+++ b/drivers/of/of_net.c
-@@ -12,6 +12,7 @@
- #include <linux/export.h>
- #include <linux/device.h>
- #include <linux/nvmem-consumer.h>
-+#include <linux/mtd/mtd.h>
-
- /**
- * of_get_phy_mode - Get phy mode for given device_node
-@@ -89,6 +90,52 @@ static int of_get_mac_addr_nvmem(struct
- return 0;
- }
-
-+static int of_get_mac_address_mtd(struct device_node *np, u8 *addr)
-+{
-+#ifdef CONFIG_MTD
-+ struct platform_device *pdev = of_find_device_by_node(np);
-+ struct device_node *mtd_np = NULL;
-+ size_t retlen;
-+ int size, ret;
-+ struct mtd_info *mtd;
-+ const char *part;
-+ const __be32 *list;
-+ phandle phandle;
-+ u8 mac[ETH_ALEN];
-+
-+ list = of_get_property(np, "mtd-mac-address", &size);
-+ if (!list || (size != (2 * sizeof(*list))))
-+ return -ENODEV;
-+
-+ phandle = be32_to_cpup(list++);
-+ if (phandle)
-+ mtd_np = of_find_node_by_phandle(phandle);
-+
-+ if (!mtd_np)
-+ return -ENODEV;
-+
-+ part = of_get_property(mtd_np, "label", NULL);
-+ if (!part)
-+ part = mtd_np->name;
-+
-+ mtd = get_mtd_device_nm(part);
-+ if (IS_ERR(mtd))
-+ return -ENODEV;
-+
-+ ret = mtd_read(mtd, be32_to_cpup(list), 6, &retlen, mac);
-+ put_mtd_device(mtd);
-+
-+ if (!is_valid_ether_addr(mac))
-+ return -EINVAL;
-+
-+ memcpy(addr, mac, ETH_ALEN);
-+
-+ return 0;
-+#endif
-+ return -EINVAL;
-+}
-+
-+
- /**
- * Search the device tree for the best MAC address to use. 'mac-address' is
- * checked first, because that is supposed to contain to "most recent" MAC
-@@ -109,6 +156,10 @@ static int of_get_mac_addr_nvmem(struct
- * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
- * but is all zeros.
- *
-+ *
-+ * If a mtd-mac-address property exists, try to fetch the MAC address from the
-+ * specified mtd device.
-+ *
- * Return: 0 on success and errno in case of error.
- */
- int of_get_mac_address(struct device_node *np, u8 *addr)
-@@ -130,6 +181,10 @@ int of_get_mac_address(struct device_nod
- if (!ret)
- return 0;
-
-+ ret = of_get_mac_address_mtd(np, addr);
-+ if (!ret)
-+ return 0;
-+
- return of_get_mac_addr_nvmem(np, addr);
- }
- EXPORT_SYMBOL(of_get_mac_address);
--- a/drivers/of/of_net.c
+++ b/drivers/of/of_net.c
-@@ -160,31 +160,56 @@ static int of_get_mac_address_mtd(struct
- * If a mtd-mac-address property exists, try to fetch the MAC address from the
- * specified mtd device.
+@@ -109,27 +109,52 @@ static int of_get_mac_addr_nvmem(struct
+ * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
+ * but is all zeros.
*
+ * DT can tell the system to increment the mac-address after is extracted by
+ * using:
ret = of_get_mac_addr(np, "address", addr);
if (!ret)
- return 0;
-+ goto found;
-
- ret = of_get_mac_address_mtd(np, addr);
- if (!ret)
-- return 0;
+ goto found;
+
+ ret = of_get_mac_addr_nvmem(np, addr);
--- a/drivers/of/of_net.c
+++ b/drivers/of/of_net.c
-@@ -135,6 +135,26 @@ static int of_get_mac_address_mtd(struct
- return -EINVAL;
+@@ -89,6 +89,27 @@ static int of_get_mac_addr_nvmem(struct
+ return 0;
}
+static int of_add_mac_address(struct device_node *np, u8* addr)
+ kfree(prop);
+ return -ENOMEM;
+}
-
++
/**
* Search the device tree for the best MAC address to use. 'mac-address' is
-@@ -210,6 +230,7 @@ found:
+ * checked first, because that is supposed to contain to "most recent" MAC
+@@ -155,6 +176,7 @@ found:
if (!of_property_read_u32(np, "mac-address-increment", &mac_inc))
addr[inc_idx] += mac_inc;
projects / openwrt / openwrt.git / commitdiff