1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2025 Broadcom */ 3 4 #ifndef _BNGE_DB_H_ 5 #define _BNGE_DB_H_ 6 7 /* 64-bit doorbell */ 8 #define DBR_EPOCH_SFT 24 9 #define DBR_TOGGLE_SFT 25 10 #define DBR_XID_SFT 32 11 #define DBR_PATH_L2 (0x1ULL << 56) 12 #define DBR_VALID (0x1ULL << 58) 13 #define DBR_TYPE_SQ (0x0ULL << 60) 14 #define DBR_TYPE_SRQ (0x2ULL << 60) 15 #define DBR_TYPE_CQ (0x4ULL << 60) 16 #define DBR_TYPE_CQ_ARMALL (0x6ULL << 60) 17 #define DBR_TYPE_NQ (0xaULL << 60) 18 #define DBR_TYPE_NQ_ARM (0xbULL << 60) 19 #define DBR_TYPE_NQ_MASK (0xeULL << 60) 20 21 struct bnge_db_info { 22 void __iomem *doorbell; 23 u64 db_key64; 24 u32 db_ring_mask; 25 u32 db_epoch_mask; 26 u8 db_epoch_shift; 27 }; 28 29 #define DB_EPOCH(db, idx) (((idx) & (db)->db_epoch_mask) << \ 30 ((db)->db_epoch_shift)) 31 #define DB_RING_IDX(db, idx) (((idx) & (db)->db_ring_mask) | \ 32 DB_EPOCH(db, idx)) 33 34 #endif /* _BNGE_DB_H_ */ 35