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Diffstat (limited to 'include/linux/platform_data/dsa.h')
-rw-r--r--include/linux/platform_data/dsa.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/include/linux/platform_data/dsa.h b/include/linux/platform_data/dsa.h
new file mode 100644
index 000000000000..d4d9bf2060a6
--- /dev/null
+++ b/include/linux/platform_data/dsa.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DSA_PDATA_H
+#define __DSA_PDATA_H
+
+struct device;
+struct net_device;
+
+#define DSA_MAX_SWITCHES 4
+#define DSA_MAX_PORTS 12
+#define DSA_RTABLE_NONE -1
+
+struct dsa_chip_data {
+ /*
+ * How to access the switch configuration registers.
+ */
+ struct device *host_dev;
+ int sw_addr;
+
+ /*
+ * Reference to network devices
+ */
+ struct device *netdev[DSA_MAX_PORTS];
+
+ /* set to size of eeprom if supported by the switch */
+ int eeprom_len;
+
+ /* Device tree node pointer for this specific switch chip
+ * used during switch setup in case additional properties
+ * and resources needs to be used
+ */
+ struct device_node *of_node;
+
+ /*
+ * The names of the switch's ports. Use "cpu" to
+ * designate the switch port that the cpu is connected to,
+ * "dsa" to indicate that this port is a DSA link to
+ * another switch, NULL to indicate the port is unused,
+ * or any other string to indicate this is a physical port.
+ */
+ char *port_names[DSA_MAX_PORTS];
+ struct device_node *port_dn[DSA_MAX_PORTS];
+
+ /*
+ * An array of which element [a] indicates which port on this
+ * switch should be used to send packets to that are destined
+ * for switch a. Can be NULL if there is only one switch chip.
+ */
+ s8 rtable[DSA_MAX_SWITCHES];
+};
+
+struct dsa_platform_data {
+ /*
+ * Reference to a Linux network interface that connects
+ * to the root switch chip of the tree.
+ */
+ struct device *netdev;
+ struct net_device *of_netdev;
+
+ /*
+ * Info structs describing each of the switch chips
+ * connected via this network interface.
+ */
+ int nr_chips;
+ struct dsa_chip_data *chip;
+};
+
+
+#endif /* __DSA_PDATA_H */