/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/* Copyright (c) 2019, Mellanox Technologies */

#ifndef _MLX5DR_H_
#define _MLX5DR_H_

struct mlx5dr_domain;
struct mlx5dr_table;
struct mlx5dr_matcher;
struct mlx5dr_rule;
struct mlx5dr_action;

enum mlx5dr_domain_type {
        MLX5DR_DOMAIN_TYPE_NIC_RX,
        MLX5DR_DOMAIN_TYPE_NIC_TX,
        MLX5DR_DOMAIN_TYPE_FDB,
};

enum mlx5dr_domain_sync_flags {
        MLX5DR_DOMAIN_SYNC_FLAGS_SW = 1 << 0,
        MLX5DR_DOMAIN_SYNC_FLAGS_HW = 1 << 1,
};

enum mlx5dr_action_reformat_type {
        DR_ACTION_REFORMAT_TYP_TNL_L2_TO_L2,
        DR_ACTION_REFORMAT_TYP_L2_TO_TNL_L2,
        DR_ACTION_REFORMAT_TYP_TNL_L3_TO_L2,
        DR_ACTION_REFORMAT_TYP_L2_TO_TNL_L3,
        DR_ACTION_REFORMAT_TYP_INSERT_HDR,
        DR_ACTION_REFORMAT_TYP_REMOVE_HDR,
};

struct mlx5dr_match_parameters {
        size_t match_sz;
        u64 *match_buf; /* Device spec format */
};

struct mlx5dr_action_dest {
        struct mlx5dr_action *dest;
        struct mlx5dr_action *reformat;
};

struct mlx5dr_domain *
mlx5dr_domain_create(struct mlx5_core_dev *mdev, enum mlx5dr_domain_type type);

int mlx5dr_domain_destroy(struct mlx5dr_domain *domain);

void mlx5dr_domain_set_peer(struct mlx5dr_domain *dmn,
                            struct mlx5dr_domain *peer_dmn,
                            u16 peer_vhca_id);

struct mlx5dr_table *
mlx5dr_table_create(struct mlx5dr_domain *domain, u32 level, u32 flags,
                    u16 uid);

struct mlx5dr_table *
mlx5dr_table_get_from_fs_ft(struct mlx5_flow_table *ft);

int mlx5dr_table_destroy(struct mlx5dr_table *table);

u32 mlx5dr_table_get_id(struct mlx5dr_table *table);

struct mlx5dr_matcher *
mlx5dr_matcher_create(struct mlx5dr_table *table,
                      u32 priority,
                      u8 match_criteria_enable,
                      struct mlx5dr_match_parameters *mask);

int mlx5dr_matcher_destroy(struct mlx5dr_matcher *matcher);

struct mlx5dr_rule *
mlx5dr_rule_create(struct mlx5dr_matcher *matcher,
                   struct mlx5dr_match_parameters *value,
                   size_t num_actions,
                   struct mlx5dr_action *actions[],
                   u32 flow_source);

int mlx5dr_rule_destroy(struct mlx5dr_rule *rule);

int mlx5dr_table_set_miss_action(struct mlx5dr_table *tbl,
                                 struct mlx5dr_action *action);

struct mlx5dr_action *
mlx5dr_action_create_dest_table_num(struct mlx5dr_domain *dmn, u32 table_num);

struct mlx5dr_action *
mlx5dr_action_create_dest_table(struct mlx5dr_table *table);

struct mlx5dr_action *
mlx5dr_action_create_dest_flow_fw_table(struct mlx5dr_domain *domain,
                                        struct mlx5_flow_table *ft);

struct mlx5dr_action *
mlx5dr_action_create_dest_vport(struct mlx5dr_domain *domain,
                                u16 vport, u8 vhca_id_valid,
                                u16 vhca_id);

struct mlx5dr_action *
mlx5dr_action_create_mult_dest_tbl(struct mlx5dr_domain *dmn,
                                   struct mlx5dr_action_dest *dests,
                                   u32 num_of_dests,
                                   bool ignore_flow_level,
                                   u32 flow_source);

struct mlx5dr_action *mlx5dr_action_create_drop(void);

struct mlx5dr_action *mlx5dr_action_create_tag(u32 tag_value);

struct mlx5dr_action *
mlx5dr_action_create_flow_sampler(struct mlx5dr_domain *dmn, u32 sampler_id);

struct mlx5dr_action *
mlx5dr_action_create_flow_counter(u32 counter_id);

struct mlx5dr_action *
mlx5dr_action_create_packet_reformat(struct mlx5dr_domain *dmn,
                                     enum mlx5dr_action_reformat_type reformat_type,
                                     u8 reformat_param_0,
                                     u8 reformat_param_1,
                                     size_t data_sz,
                                     void *data);

struct mlx5dr_action *
mlx5dr_action_create_modify_header(struct mlx5dr_domain *domain,
                                   u32 flags,
                                   size_t actions_sz,
                                   __be64 actions[]);

struct mlx5dr_action *mlx5dr_action_create_pop_vlan(void);

struct mlx5dr_action *
mlx5dr_action_create_push_vlan(struct mlx5dr_domain *domain, __be32 vlan_hdr);

struct mlx5dr_action *
mlx5dr_action_create_aso(struct mlx5dr_domain *dmn,
                         u32 obj_id,
                         u8 return_reg_id,
                         u8 aso_type,
                         u8 init_color,
                         u8 meter_id);

struct mlx5dr_action *
mlx5dr_action_create_dest_match_range(struct mlx5dr_domain *dmn,
                                      u32 field,
                                      struct mlx5_flow_table *hit_ft,
                                      struct mlx5_flow_table *miss_ft,
                                      u32 min,
                                      u32 max);

int mlx5dr_action_destroy(struct mlx5dr_action *action);

u32 mlx5dr_action_get_pkt_reformat_id(struct mlx5dr_action *action);

static inline bool
mlx5dr_is_supported(struct mlx5_core_dev *dev)
{
        return MLX5_CAP_GEN(dev, roce) &&
               (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner) ||
                (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner_v2) &&
                 (MLX5_CAP_GEN(dev, steering_format_version) <=
                  MLX5_STEERING_FORMAT_CONNECTX_8)));
}

/* buddy functions & structure */

struct mlx5dr_icm_mr;

struct mlx5dr_icm_buddy_mem {
        unsigned long           **bitmap;
        unsigned int            *num_free;
        u32                     max_order;
        struct list_head        list_node;
        struct mlx5dr_icm_mr    *icm_mr;
        struct mlx5dr_icm_pool  *pool;

        /* Amount of memory in used chunks - HW may be accessing this memory */
        u64                     used_memory;

        /* Memory optimisation */
        struct mlx5dr_ste       *ste_arr;
        struct list_head        *miss_list;
        u8                      *hw_ste_arr;
};

int mlx5dr_buddy_init(struct mlx5dr_icm_buddy_mem *buddy,
                      unsigned int max_order);
void mlx5dr_buddy_cleanup(struct mlx5dr_icm_buddy_mem *buddy);
int mlx5dr_buddy_alloc_mem(struct mlx5dr_icm_buddy_mem *buddy,
                           unsigned int order,
                           unsigned int *segment);
void mlx5dr_buddy_free_mem(struct mlx5dr_icm_buddy_mem *buddy,
                           unsigned int seg, unsigned int order);

#endif /* _MLX5DR_H_ */