/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */

#ifndef __QPLIB_TLV_H__
#define __QPLIB_TLV_H__

struct roce_tlv {
        struct tlv tlv;
        u8 total_size; // in units of 16 byte chunks
        u8 unused[7];  // for 16 byte alignment
};

#define CHUNK_SIZE 16
#define CHUNKS(x) (((x) + CHUNK_SIZE - 1) / CHUNK_SIZE)

static inline  void __roce_1st_tlv_prep(struct roce_tlv *rtlv, u8 tot_chunks,
                                        u16 content_bytes, u8 flags)
{
        rtlv->tlv.cmd_discr = cpu_to_le16(CMD_DISCR_TLV_ENCAP);
        rtlv->tlv.tlv_type = cpu_to_le16(TLV_TYPE_ROCE_SP_COMMAND);
        rtlv->tlv.length = cpu_to_le16(content_bytes);
        rtlv->tlv.flags = TLV_FLAGS_REQUIRED;
        rtlv->tlv.flags |= flags ? TLV_FLAGS_MORE : 0;
        rtlv->total_size = (tot_chunks);
}

static inline void __roce_ext_tlv_prep(struct roce_tlv *rtlv, u16 tlv_type,
                                       u16 content_bytes, u8 more, u8 flags)
{
        rtlv->tlv.cmd_discr = cpu_to_le16(CMD_DISCR_TLV_ENCAP);
        rtlv->tlv.tlv_type = cpu_to_le16(tlv_type);
        rtlv->tlv.length = cpu_to_le16(content_bytes);
        rtlv->tlv.flags |= more ? TLV_FLAGS_MORE : 0;
        rtlv->tlv.flags |= flags ? TLV_FLAGS_REQUIRED : 0;
}

/*
 * TLV size in units of 16 byte chunks
 */
#define TLV_SIZE ((sizeof(struct roce_tlv) + 15) / 16)
/*
 * TLV length in bytes
 */
#define TLV_BYTES (TLV_SIZE * 16)

#define HAS_TLV_HEADER(msg) (le16_to_cpu(((struct tlv *)(msg))->cmd_discr) == CMD_DISCR_TLV_ENCAP)
#define GET_TLV_DATA(tlv)   ((void *)&((uint8_t *)(tlv))[TLV_BYTES])

static inline u8 __get_cmdq_base_opcode(struct cmdq_base *req, u32 size)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                return ((struct cmdq_base *)GET_TLV_DATA(req))->opcode;
        else
                return req->opcode;
}

static inline void __set_cmdq_base_opcode(struct cmdq_base *req,
                                          u32 size, u8 val)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                ((struct cmdq_base *)GET_TLV_DATA(req))->opcode = val;
        else
                req->opcode = val;
}

static inline __le16 __get_cmdq_base_cookie(struct cmdq_base *req, u32 size)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                return ((struct cmdq_base *)GET_TLV_DATA(req))->cookie;
        else
                return req->cookie;
}

static inline void __set_cmdq_base_cookie(struct cmdq_base *req,
                                          u32 size, __le16 val)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                ((struct cmdq_base *)GET_TLV_DATA(req))->cookie = val;
        else
                req->cookie = val;
}

static inline __le64 __get_cmdq_base_resp_addr(struct cmdq_base *req, u32 size)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                return ((struct cmdq_base *)GET_TLV_DATA(req))->resp_addr;
        else
                return req->resp_addr;
}

static inline void __set_cmdq_base_resp_addr(struct cmdq_base *req,
                                             u32 size, __le64 val)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                ((struct cmdq_base *)GET_TLV_DATA(req))->resp_addr = val;
        else
                req->resp_addr = val;
}

static inline u8 __get_cmdq_base_resp_size(struct cmdq_base *req, u32 size)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                return ((struct cmdq_base *)GET_TLV_DATA(req))->resp_size;
        else
                return req->resp_size;
}

static inline void __set_cmdq_base_resp_size(struct cmdq_base *req,
                                             u32 size, u8 val)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                ((struct cmdq_base *)GET_TLV_DATA(req))->resp_size = val;
        else
                req->resp_size = val;
}

static inline u8 __get_cmdq_base_cmd_size(struct cmdq_base *req, u32 size)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                return ((struct roce_tlv *)(req))->total_size;
        else
                return req->cmd_size;
}

static inline void __set_cmdq_base_cmd_size(struct cmdq_base *req,
                                            u32 size, u8 val)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                ((struct cmdq_base *)GET_TLV_DATA(req))->cmd_size = val;
        else
                req->cmd_size = val;
}

static inline __le16 __get_cmdq_base_flags(struct cmdq_base *req, u32 size)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                return ((struct cmdq_base *)GET_TLV_DATA(req))->flags;
        else
                return req->flags;
}

static inline void __set_cmdq_base_flags(struct cmdq_base *req,
                                         u32 size, __le16 val)
{
        if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
                ((struct cmdq_base *)GET_TLV_DATA(req))->flags = val;
        else
                req->flags = val;
}

struct bnxt_qplib_tlv_modify_cc_req {
        struct roce_tlv                         tlv_hdr;
        struct cmdq_modify_roce_cc              base_req;
        __le64                                  tlvpad;
        struct cmdq_modify_roce_cc_gen1_tlv     ext_req;
};

struct bnxt_qplib_tlv_query_rcc_sb {
        struct roce_tlv                                 tlv_hdr;
        struct creq_query_roce_cc_resp_sb               base_sb;
        struct creq_query_roce_cc_gen1_resp_sb_tlv      gen1_sb;
};
#endif /* __QPLIB_TLV_H__ */