/* SPDX-License-Identifier: BSD-3-Clause */
/*  Copyright (c) 2024, Intel Corporation
 *  All rights reserved.
 *
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 *  modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright notice,
 *      this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 *   3. Neither the name of the Intel Corporation nor the names of its
 *      contributors may be used to endorse or promote products derived from
 *      this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _ICE_FLEX_TYPE_H_
#define _ICE_FLEX_TYPE_H_

#define ICE_FV_OFFSET_INVAL     0x1FF

#pragma pack(1)
/* Extraction Sequence (Field Vector) Table */
struct ice_fv_word {
        u8 prot_id;
        u16 off;                /* Offset within the protocol header */
        u8 resvrd;
};

#pragma pack()

#define ICE_MAX_NUM_PROFILES 256

#define ICE_MAX_FV_WORDS 48
struct ice_fv {
        struct ice_fv_word ew[ICE_MAX_FV_WORDS];
};

/* Packet Type (PTYPE) values */
#define ICE_PTYPE_MAC_PAY               1
#define ICE_PTYPE_IPV4FRAG_PAY          22
#define ICE_PTYPE_IPV4_PAY              23
#define ICE_PTYPE_IPV4_UDP_PAY          24
#define ICE_PTYPE_IPV4_TCP_PAY          26
#define ICE_PTYPE_IPV4_SCTP_PAY         27
#define ICE_PTYPE_IPV4_ICMP_PAY         28
#define ICE_PTYPE_IPV6FRAG_PAY          88
#define ICE_PTYPE_IPV6_PAY              89
#define ICE_PTYPE_IPV6_UDP_PAY          90
#define ICE_PTYPE_IPV6_TCP_PAY          92
#define ICE_PTYPE_IPV6_SCTP_PAY         93
#define ICE_PTYPE_IPV6_ICMP_PAY         94

struct ice_meta_sect {
        struct ice_pkg_ver ver;
#define ICE_META_SECT_NAME_SIZE 28
        char name[ICE_META_SECT_NAME_SIZE];
        __le32 track_id;
};

/* Packet Type Groups (PTG) - Inner Most fields (IM) */
#define ICE_PTG_IM_IPV4_TCP             16
#define ICE_PTG_IM_IPV4_UDP             17
#define ICE_PTG_IM_IPV4_SCTP            18
#define ICE_PTG_IM_IPV4_PAY             20
#define ICE_PTG_IM_IPV4_OTHER           21
#define ICE_PTG_IM_IPV6_TCP             32
#define ICE_PTG_IM_IPV6_UDP             33
#define ICE_PTG_IM_IPV6_SCTP            34
#define ICE_PTG_IM_IPV6_OTHER           37
#define ICE_PTG_IM_L2_OTHER             67

struct ice_flex_fields {
        union {
                struct {
                        u8 src_ip;
                        u8 dst_ip;
                        u8 flow_label;  /* valid for IPv6 only */
                } ip_fields;

                struct {
                        u8 src_prt;
                        u8 dst_prt;
                } tcp_udp_fields;

                struct {
                        u8 src_ip;
                        u8 dst_ip;
                        u8 src_prt;
                        u8 dst_prt;
                } ip_tcp_udp_fields;

                struct {
                        u8 src_prt;
                        u8 dst_prt;
                        u8 flow_label;  /* valid for IPv6 only */
                        u8 spi;
                } ip_esp_fields;

                struct {
                        u32 offset;
                        u32 length;
                } off_len;
        } fields;
};

#define ICE_XLT1_DFLT_GRP       0
#define ICE_XLT1_TABLE_SIZE     1024

/* package labels */
struct ice_label {
        __le16 value;
#define ICE_PKG_LABEL_SIZE      64
        char name[ICE_PKG_LABEL_SIZE];
};

struct ice_label_section {
        __le16 count;
        struct ice_label label[STRUCT_HACK_VAR_LEN];
};

#define ICE_MAX_LABELS_IN_BUF ICE_MAX_ENTRIES_IN_BUF( \
        ice_struct_size((struct ice_label_section *)0, label, 1) - \
        sizeof(struct ice_label), sizeof(struct ice_label))

struct ice_sw_fv_section {
        __le16 count;
        __le16 base_offset;
        struct ice_fv fv[STRUCT_HACK_VAR_LEN];
};

struct ice_sw_fv_list_entry {
        struct LIST_ENTRY_TYPE list_entry;
        u32 profile_id;
        struct ice_fv *fv_ptr;
};

#pragma pack(1)
/* The BOOST TCAM stores the match packet header in reverse order, meaning
 * the fields are reversed; in addition, this means that the normally big endian
 * fields of the packet are now little endian.
 */
struct ice_boost_key_value {
#define ICE_BOOST_REMAINING_HV_KEY     15
        u8 remaining_hv_key[ICE_BOOST_REMAINING_HV_KEY];
        union {
                struct {
                        __le16 hv_dst_port_key;
                        __le16 hv_src_port_key;
                } /* udp_tunnel */;
                struct {
                        __le16 hv_vlan_id_key;
                        __le16 hv_etype_key;
                } vlan;
        };
        u8 tcam_search_key;
};
#pragma pack()

struct ice_boost_key {
        struct ice_boost_key_value key;
        struct ice_boost_key_value key2;
};

/* package Boost TCAM entry */
struct ice_boost_tcam_entry {
        __le16 addr;
        __le16 reserved;
        /* break up the 40 bytes of key into different fields */
        struct ice_boost_key key;
        u8 boost_hit_index_group;
        /* The following contains bitfields which are not on byte boundaries.
         * These fields are currently unused by driver software.
         */
#define ICE_BOOST_BIT_FIELDS            43
        u8 bit_fields[ICE_BOOST_BIT_FIELDS];
};

struct ice_boost_tcam_section {
        __le16 count;
        __le16 reserved;
        struct ice_boost_tcam_entry tcam[STRUCT_HACK_VAR_LEN];
};

#define ICE_MAX_BST_TCAMS_IN_BUF ICE_MAX_ENTRIES_IN_BUF( \
        ice_struct_size((struct ice_boost_tcam_section *)0, tcam, 1) - \
        sizeof(struct ice_boost_tcam_entry), \
        sizeof(struct ice_boost_tcam_entry))

struct ice_xlt1_section {
        __le16 count;
        __le16 offset;
        u8 value[STRUCT_HACK_VAR_LEN];
};

struct ice_xlt2_section {
        __le16 count;
        __le16 offset;
        __le16 value[STRUCT_HACK_VAR_LEN];
};

struct ice_prof_redir_section {
        __le16 count;
        __le16 offset;
        u8 redir_value[STRUCT_HACK_VAR_LEN];
};

/* Tunnel enabling */

enum ice_tunnel_type {
        TNL_VXLAN = 0,
        TNL_GENEVE,
        TNL_GRETAP,
        TNL_GTP,
        TNL_GTPC,
        TNL_GTPU,
        TNL_LAST = 0xFF,
        TNL_ALL = 0xFF,
};

struct ice_tunnel_type_scan {
        enum ice_tunnel_type type;
        const char *label_prefix;
};

struct ice_tunnel_entry {
        enum ice_tunnel_type type;
        u16 boost_addr;
        u16 port;
        u16 ref;
        struct ice_boost_tcam_entry *boost_entry;
        u8 valid;
        u8 in_use;
        u8 marked;
};

#define ICE_TUNNEL_MAX_ENTRIES  16

struct ice_tunnel_table {
        struct ice_tunnel_entry tbl[ICE_TUNNEL_MAX_ENTRIES];
        u16 count;
};

struct ice_pkg_es {
        __le16 count;
        __le16 offset;
        struct ice_fv_word es[STRUCT_HACK_VAR_LEN];
};

struct ice_es {
        u32 sid;
        u16 count;
        u16 fvw;
        u16 *ref_count;
        struct LIST_HEAD_TYPE prof_map;
        struct ice_fv_word *t;
        struct ice_lock prof_map_lock;  /* protect access to profiles list */
        u8 *written;
        u8 reverse; /* set to true to reverse FV order */
};

/* PTYPE Group management */

/* Note: XLT1 table takes 13-bit as input, and results in an 8-bit packet type
 * group (PTG) ID as output.
 *
 * Note: PTG 0 is the default packet type group and it is assumed that all PTYPE
 * are a part of this group until moved to a new PTG.
 */
#define ICE_DEFAULT_PTG 0

struct ice_ptg_entry {
        struct ice_ptg_ptype *first_ptype;
        u8 in_use;
};

struct ice_ptg_ptype {
        struct ice_ptg_ptype *next_ptype;
        u8 ptg;
};

#define ICE_MAX_TCAM_PER_PROFILE        32
#define ICE_MAX_PTG_PER_PROFILE         32

struct ice_prof_map {
        struct LIST_ENTRY_TYPE list;
        u64 profile_cookie;
        u64 context;
        u8 prof_id;
        u8 ptg_cnt;
        u8 ptg[ICE_MAX_PTG_PER_PROFILE];
};

#define ICE_INVALID_TCAM        0xFFFF

struct ice_tcam_inf {
        u16 tcam_idx;
        u8 ptg;
        u8 prof_id;
        u8 in_use;
};

struct ice_vsig_prof {
        struct LIST_ENTRY_TYPE list;
        u64 profile_cookie;
        u8 prof_id;
        u8 tcam_count;
        struct ice_tcam_inf tcam[ICE_MAX_TCAM_PER_PROFILE];
};

struct ice_vsig_entry {
        struct LIST_HEAD_TYPE prop_lst;
        struct ice_vsig_vsi *first_vsi;
        u8 in_use;
};

struct ice_vsig_vsi {
        struct ice_vsig_vsi *next_vsi;
        u32 prop_mask;
        u16 changed;
        u16 vsig;
};

#define ICE_XLT1_CNT    1024
#define ICE_MAX_PTGS    256

/* XLT1 Table */
struct ice_xlt1 {
        struct ice_ptg_entry *ptg_tbl;
        struct ice_ptg_ptype *ptypes;
        u8 *t;
        u32 sid;
        u16 count;
};

#define ICE_XLT2_CNT    768
#define ICE_MAX_VSIGS   768

/* VSIG bit layout:
 * [0:12]: incremental VSIG index 1 to ICE_MAX_VSIGS
 * [13:15]: PF number of device
 */
#define ICE_VSIG_IDX_M  (0x1FFF)
#define ICE_PF_NUM_S    13
#define ICE_PF_NUM_M    (0x07 << ICE_PF_NUM_S)
#define ICE_VSIG_VALUE(vsig, pf_id) \
        ((u16)((((u16)(vsig)) & ICE_VSIG_IDX_M) | \
               (((u16)(pf_id) << ICE_PF_NUM_S) & ICE_PF_NUM_M)))
#define ICE_DEFAULT_VSIG        0

/* XLT2 Table */
struct ice_xlt2 {
        struct ice_vsig_entry *vsig_tbl;
        struct ice_vsig_vsi *vsis;
        u16 *t;
        u32 sid;
        u16 count;
};

/* Extraction sequence - list of match fields:
 * protocol ID, offset, profile length
 */
union ice_match_fld {
        struct {
                u8 prot_id;
                u8 offset;
                u8 length;
                u8 reserved; /* must be zero */
        } fld;
        u32 val;
};

#define ICE_MATCH_LIST_SZ       20
#pragma pack(1)
struct ice_match {
        u8 count;
        union ice_match_fld list[ICE_MATCH_LIST_SZ];
};

/* Profile ID Management */
struct ice_prof_id_key {
        __le16 flags;
        u8 xlt1;
        __le16 xlt2_cdid;
};

/* Keys are made up of two values, each one-half the size of the key.
 * For TCAM, the entire key is 80 bits wide (or 2, 40-bit wide values)
 */
#define ICE_TCAM_KEY_VAL_SZ     5
#define ICE_TCAM_KEY_SZ         (2 * ICE_TCAM_KEY_VAL_SZ)

struct ice_prof_tcam_entry {
        __le16 addr;
        u8 key[ICE_TCAM_KEY_SZ];
        u8 prof_id;
};
#pragma pack()

struct ice_prof_id_section {
        __le16 count;
        struct ice_prof_tcam_entry entry[STRUCT_HACK_VAR_LEN];
};

struct ice_prof_tcam {
        u32 sid;
        u16 count;
        u16 max_prof_id;
        struct ice_prof_tcam_entry *t;
        u8 cdid_bits; /* # CDID bits to use in key, 0, 2, 4, or 8 */
};

struct ice_prof_redir {
        u8 *t;
        u32 sid;
        u16 count;
};

/* Tables per block */
struct ice_blk_info {
        struct ice_xlt1 xlt1;
        struct ice_xlt2 xlt2;
        struct ice_prof_tcam prof;
        struct ice_prof_redir prof_redir;
        struct ice_es es;
        u8 overwrite; /* set to true to allow overwrite of table entries */
        u8 is_list_init;
};

enum ice_chg_type {
        ICE_TCAM_NONE = 0,
        ICE_PTG_ES_ADD,
        ICE_TCAM_ADD,
        ICE_VSIG_ADD,
        ICE_VSIG_REM,
        ICE_VSI_MOVE,
};

struct ice_chs_chg {
        struct LIST_ENTRY_TYPE list_entry;
        enum ice_chg_type type;

        u8 add_ptg;
        u8 add_vsig;
        u8 add_tcam_idx;
        u8 add_prof;
        u16 ptype;
        u8 ptg;
        u8 prof_id;
        u16 vsi;
        u16 vsig;
        u16 orig_vsig;
        u16 tcam_idx;
};

#define ICE_FLOW_PTYPE_MAX              ICE_XLT1_CNT

enum ice_prof_type {
        ICE_PROF_INVALID = 0x0,
        ICE_PROF_NON_TUN = 0x1,
        ICE_PROF_TUN_UDP = 0x2,
        ICE_PROF_TUN_GRE = 0x4,
        ICE_PROF_TUN_GTPU = 0x8,
        ICE_PROF_TUN_GTPC = 0x10,
        ICE_PROF_TUN_ALL = 0x1E,
        ICE_PROF_ALL = 0xFF,
};

/* Number of bits/bytes contained in meta init entry. Note, this should be a
 * multiple of 32 bits.
 */
#define ICE_META_INIT_BITS      192
#define ICE_META_INIT_DW_CNT    (ICE_META_INIT_BITS / (sizeof(__le32) * \
                                 BITS_PER_BYTE))

/* The meta init Flag field starts at this bit */
#define ICE_META_FLAGS_ST               123

/* The entry and bit to check for Double VLAN Mode (DVM) support */
#define ICE_META_VLAN_MODE_ENTRY        0
#define ICE_META_FLAG_VLAN_MODE         60
#define ICE_META_VLAN_MODE_BIT          (ICE_META_FLAGS_ST + \
                                         ICE_META_FLAG_VLAN_MODE)

struct ice_meta_init_entry {
        __le32 bm[ICE_META_INIT_DW_CNT];
};

struct ice_meta_init_section {
        __le16 count;
        __le16 offset;
        struct ice_meta_init_entry entry[1];
};
#endif /* _ICE_FLEX_TYPE_H_ */