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@@ -11,6 +11,7 @@
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#ifndef __LINUX_NET_DSA_H
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#define __LINUX_NET_DSA_H
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+#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/workqueue.h>
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@@ -90,6 +91,95 @@ struct dsa_switch_tree {
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struct dsa_switch *ds[DSA_MAX_SWITCHES];
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};
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+struct dsa_switch {
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+ /*
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+ * Parent switch tree, and switch index.
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+ */
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+ struct dsa_switch_tree *dst;
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+ int index;
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+
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+ /*
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+ * Configuration data for this switch.
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+ */
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+ struct dsa_chip_data *pd;
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+
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+ /*
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+ * The used switch driver.
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+ */
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+ struct dsa_switch_driver *drv;
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+
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+ /*
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+ * Reference to mii bus to use.
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+ */
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+ struct mii_bus *master_mii_bus;
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+
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+ /*
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+ * Slave mii_bus and devices for the individual ports.
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+ */
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+ u32 dsa_port_mask;
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+ u32 phys_port_mask;
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+ struct mii_bus *slave_mii_bus;
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+ struct net_device *ports[DSA_MAX_PORTS];
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+};
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+
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+static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
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+{
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+ return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
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+}
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+
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+static inline u8 dsa_upstream_port(struct dsa_switch *ds)
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+{
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+ struct dsa_switch_tree *dst = ds->dst;
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+
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+ /*
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+ * If this is the root switch (i.e. the switch that connects
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+ * to the CPU), return the cpu port number on this switch.
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+ * Else return the (DSA) port number that connects to the
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+ * switch that is one hop closer to the cpu.
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+ */
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+ if (dst->cpu_switch == ds->index)
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+ return dst->cpu_port;
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+ else
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+ return ds->pd->rtable[dst->cpu_switch];
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+}
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+
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+struct dsa_switch_driver {
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+ struct list_head list;
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+
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+ __be16 tag_protocol;
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+ int priv_size;
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+
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+ /*
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+ * Probing and setup.
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+ */
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+ char *(*probe)(struct mii_bus *bus, int sw_addr);
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+ int (*setup)(struct dsa_switch *ds);
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+ int (*set_addr)(struct dsa_switch *ds, u8 *addr);
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+
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+ /*
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+ * Access to the switch's PHY registers.
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+ */
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+ int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
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+ int (*phy_write)(struct dsa_switch *ds, int port,
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+ int regnum, u16 val);
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+
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+ /*
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+ * Link state polling and IRQ handling.
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+ */
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+ void (*poll_link)(struct dsa_switch *ds);
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+
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+ /*
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+ * ethtool hardware statistics.
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+ */
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+ void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
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+ void (*get_ethtool_stats)(struct dsa_switch *ds,
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+ int port, uint64_t *data);
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+ int (*get_sset_count)(struct dsa_switch *ds);
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+};
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+
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+void register_switch_driver(struct dsa_switch_driver *type);
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+void unregister_switch_driver(struct dsa_switch_driver *type);
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+
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/*
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* The original DSA tag format and some other tag formats have no
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* ethertype, which means that we need to add a little hack to the
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