/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2025 Broadcom */

#ifndef _BNGE_DB_H_
#define _BNGE_DB_H_

/* 64-bit doorbell */
#define DBR_EPOCH_SFT                                   24
#define DBR_TOGGLE_SFT                                  25
#define DBR_XID_SFT                                     32
#define DBR_PATH_L2                                     (0x1ULL << 56)
#define DBR_VALID                                       (0x1ULL << 58)
#define DBR_TYPE_SQ                                     (0x0ULL << 60)
#define DBR_TYPE_SRQ                                    (0x2ULL << 60)
#define DBR_TYPE_CQ                                     (0x4ULL << 60)
#define DBR_TYPE_CQ_ARMALL                              (0x6ULL << 60)
#define DBR_TYPE_NQ                                     (0xaULL << 60)
#define DBR_TYPE_NQ_ARM                                 (0xbULL << 60)
#define DBR_TYPE_NQ_MASK                                (0xeULL << 60)

struct bnge_db_info {
        void __iomem            *doorbell;
        u64                     db_key64;
        u32                     db_ring_mask;
        u32                     db_epoch_mask;
        u8                      db_epoch_shift;
};

#define DB_EPOCH(db, idx)       (((idx) & (db)->db_epoch_mask) <<       \
                                 ((db)->db_epoch_shift))
#define DB_RING_IDX(db, idx)    (((idx) & (db)->db_ring_mask) |         \
                                 DB_EPOCH(db, idx))

#endif /* _BNGE_DB_H_ */