/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) Meta Platforms, Inc. and affiliates. */

#ifndef _FBNIC_NETDEV_H_
#define _FBNIC_NETDEV_H_

#include <linux/phylink.h>
#include <linux/types.h>

#include "fbnic_csr.h"
#include "fbnic_rpc.h"
#include "fbnic_txrx.h"

#define FBNIC_MAX_NAPI_VECTORS          128u
#define FBNIC_MIN_RXD_PER_FRAME         2

/* Natively supported tunnel GSO features (not thru GSO_PARTIAL) */
#define FBNIC_TUN_GSO_FEATURES          NETIF_F_GSO_IPXIP6

struct fbnic_net {
        struct bpf_prog *xdp_prog;

        struct fbnic_ring *tx[FBNIC_MAX_TXQS + FBNIC_MAX_XDPQS];
        struct fbnic_ring *rx[FBNIC_MAX_RXQS];

        struct fbnic_napi_vector *napi[FBNIC_MAX_NAPI_VECTORS];

        struct net_device *netdev;
        struct fbnic_dev *fbd;

        u32 txq_size;
        u32 hpq_size;
        u32 ppq_size;
        u32 rcq_size;

        u32 hds_thresh;

        u16 rx_usecs;
        u16 tx_usecs;

        u32 rx_max_frames;

        u16 num_napi;

        struct phylink *phylink;
        struct phylink_config phylink_config;
        struct phylink_pcs *pcs;

        u8 aui;
        u8 fec;

        /* Cached top bits of the HW time counter for 40b -> 64b conversion */
        u32 time_high;
        /* Protect readers of @time_offset, writers take @time_lock. */
        struct u64_stats_sync time_seq;
        /* Offset in ns between free running NIC PHC and time set via PTP
         * clock callbacks
         */
        s64 time_offset;

        u16 num_tx_queues;
        u16 num_rx_queues;

        u8 indir_tbl[FBNIC_RPC_RSS_TBL_COUNT][FBNIC_RPC_RSS_TBL_SIZE];
        u32 rss_key[FBNIC_RPC_RSS_KEY_DWORD_LEN];
        u32 rss_flow_hash[FBNIC_NUM_HASH_OPT];

        /* Storage for stats after ring destruction */
        struct fbnic_queue_stats tx_stats;
        struct fbnic_queue_stats rx_stats;
        struct fbnic_queue_stats bdq_stats;
        u64 link_down_events;

        /* Time stamping filter config */
        struct kernel_hwtstamp_config hwtstamp_config;

        bool tx_pause;
};

int __fbnic_open(struct fbnic_net *fbn);
void fbnic_up(struct fbnic_net *fbn);
void fbnic_down(struct fbnic_net *fbn);
void fbnic_down_noidle(struct fbnic_net *fbn);

struct net_device *fbnic_netdev_alloc(struct fbnic_dev *fbd);
void fbnic_netdev_free(struct fbnic_dev *fbd);
int fbnic_netdev_register(struct net_device *netdev);
void fbnic_netdev_unregister(struct net_device *netdev);
void fbnic_reset_queues(struct fbnic_net *fbn,
                        unsigned int tx, unsigned int rx);

void fbnic_set_ethtool_ops(struct net_device *dev);

int fbnic_ptp_setup(struct fbnic_dev *fbd);
void fbnic_ptp_destroy(struct fbnic_dev *fbd);
void fbnic_time_init(struct fbnic_net *fbn);
int fbnic_time_start(struct fbnic_net *fbn);
void fbnic_time_stop(struct fbnic_net *fbn);

void __fbnic_set_rx_mode(struct fbnic_dev *fbd,
                         struct netdev_hw_addr_list *uc,
                         struct netdev_hw_addr_list *mc);
void fbnic_clear_rx_mode(struct fbnic_dev *fbd);

void fbnic_phylink_get_pauseparam(struct net_device *netdev,
                                  struct ethtool_pauseparam *pause);
int fbnic_phylink_set_pauseparam(struct net_device *netdev,
                                 struct ethtool_pauseparam *pause);
int fbnic_phylink_ethtool_ksettings_get(struct net_device *netdev,
                                        struct ethtool_link_ksettings *cmd);
int fbnic_phylink_get_fecparam(struct net_device *netdev,
                               struct ethtool_fecparam *fecparam);
int fbnic_phylink_create(struct net_device *netdev);
void fbnic_phylink_destroy(struct net_device *netdev);
int fbnic_phylink_init(struct net_device *netdev);
void fbnic_phylink_pmd_training_complete_notify(struct net_device *netdev);
bool fbnic_check_split_frames(struct bpf_prog *prog,
                              unsigned int mtu, u32 hds_threshold);
#endif /* _FBNIC_NETDEV_H_ */