diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnge/bnge_db.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnge/bnge_db.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_db.h b/drivers/net/ethernet/broadcom/bnge/bnge_db.h new file mode 100644 index 000000000000..950ed582f1d8 --- /dev/null +++ b/drivers/net/ethernet/broadcom/bnge/bnge_db.h @@ -0,0 +1,34 @@ +/* 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_ */ |