/* 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 */