| /* 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_ */ |
