[PATCH for-next 5/6] RDMA/bnxt_re: Doorbell changes

[Selvin Xavier <selvin.xavier@xxxxxxxxxxxx>]

Update the Doorbell routines to support the latest HW
definitions. Use common routine to prepare the Doorbell
key.

Signed-off-by: Selvin Xavier <selvin.xavier@xxxxxxxxxxxx>
---
 drivers/infiniband/hw/bnxt_re/qplib_res.h | 46 +++++++++++++++++++++++--------
 1 file changed, 35 insertions(+), 11 deletions(-)

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h
index 7e6d907..c228870 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h
@@ -47,6 +47,9 @@ extern const struct bnxt_qplib_gid bnxt_qplib_gid_zero;
 #define CHIP_NUM_58818          0xd818
 #define CHIP_NUM_57608          0x1760
 
+#define BNXT_QPLIB_DBR_VALID		(0x1UL << 26)
+#define BNXT_QPLIB_DBR_EPOCH_SHIFT	24
+#define BNXT_QPLIB_DBR_TOGGLE_SHIFT	25
 
 struct bnxt_qplib_drv_modes {
 	u8	wqe_mode;
@@ -200,6 +203,11 @@ enum bnxt_qplib_db_info_flags_mask {
 	BNXT_QPLIB_FLAG_EPOCH_PROD_MASK         = 0x2UL,
 };
 
+enum bnxt_qplib_db_epoch_flag_shift {
+	BNXT_QPLIB_DB_EPOCH_CONS_SHIFT  = BNXT_QPLIB_DBR_EPOCH_SHIFT,
+	BNXT_QPLIB_DB_EPOCH_PROD_SHIFT  = (BNXT_QPLIB_DBR_EPOCH_SHIFT - 1),
+};
+
 /* Tables */
 struct bnxt_qplib_pd_tbl {
 	unsigned long			*tbl;
@@ -453,14 +461,27 @@ static inline void bnxt_qplib_ring_db32(struct bnxt_qplib_db_info *info,
 	writel(key, info->db);
 }
 
+#define BNXT_QPLIB_INIT_DBHDR(xid, type, indx, toggle) \
+	(((u64)(((xid) & DBC_DBC_XID_MASK) | DBC_DBC_PATH_ROCE |  \
+		(type) | BNXT_QPLIB_DBR_VALID) << 32) | (indx) |  \
+	 (((u32)(toggle)) << (BNXT_QPLIB_DBR_TOGGLE_SHIFT)))
+
 static inline void bnxt_qplib_ring_db(struct bnxt_qplib_db_info *info,
 				      u32 type)
 {
 	u64 key = 0;
+	u32 indx;
+	u8 toggle = 0;
+
+	if (type == DBC_DBC_TYPE_CQ_ARMALL ||
+	    type == DBC_DBC_TYPE_CQ_ARMSE)
+		toggle = info->toggle;
+
+	indx = (info->hwq->cons & DBC_DBC_INDEX_MASK) |
+	       ((info->flags & BNXT_QPLIB_FLAG_EPOCH_CONS_MASK) <<
+		 BNXT_QPLIB_DB_EPOCH_CONS_SHIFT);
 
-	key = (info->xid & DBC_DBC_XID_MASK) | DBC_DBC_PATH_ROCE | type;
-	key <<= 32;
-	key |= (info->hwq->cons & DBC_DBC_INDEX_MASK);
+	key =  BNXT_QPLIB_INIT_DBHDR(info->xid, type, indx, toggle);
 	writeq(key, info->db);
 }
 
@@ -468,10 +489,12 @@ static inline void bnxt_qplib_ring_prod_db(struct bnxt_qplib_db_info *info,
 					   u32 type)
 {
 	u64 key = 0;
+	u32 indx;
 
-	key = (info->xid & DBC_DBC_XID_MASK) | DBC_DBC_PATH_ROCE | type;
-	key <<= 32;
-	key |= ((info->hwq->prod / info->max_slot)) & DBC_DBC_INDEX_MASK;
+	indx = (((info->hwq->prod / info->max_slot) & DBC_DBC_INDEX_MASK) |
+		((info->flags & BNXT_QPLIB_FLAG_EPOCH_PROD_MASK) <<
+		 BNXT_QPLIB_DB_EPOCH_PROD_SHIFT));
+	key = BNXT_QPLIB_INIT_DBHDR(info->xid, type, indx, 0);
 	writeq(key, info->db);
 }
 
@@ -479,9 +502,12 @@ static inline void bnxt_qplib_armen_db(struct bnxt_qplib_db_info *info,
 				       u32 type)
 {
 	u64 key = 0;
+	u8 toggle = 0;
 
-	key = (info->xid & DBC_DBC_XID_MASK) | DBC_DBC_PATH_ROCE | type;
-	key <<= 32;
+	if (type == DBC_DBC_TYPE_CQ_ARMENA || type == DBC_DBC_TYPE_SRQ_ARMENA)
+		toggle = info->toggle;
+	/* Index always at 0 */
+	key = BNXT_QPLIB_INIT_DBHDR(info->xid, type, 0, toggle);
 	writeq(key, info->priv_db);
 }
 
@@ -490,9 +516,7 @@ static inline void bnxt_qplib_srq_arm_db(struct bnxt_qplib_db_info *info,
 {
 	u64 key = 0;
 
-	key = (info->xid & DBC_DBC_XID_MASK) | DBC_DBC_PATH_ROCE | th;
-	key <<= 32;
-	key |=  th & DBC_DBC_INDEX_MASK;
+	key = BNXT_QPLIB_INIT_DBHDR(info->xid, DBC_DBC_TYPE_SRQ_ARM, th, info->toggle);
 	writeq(key, info->priv_db);
 }
 
-- 
2.5.5

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