Merge tag 'ntb-5.1' of git://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:

 - fixes for switchtec debugability and mapping table entries

 - NTB transport improvements

 - a reworking of the peer_db_addr for better abstraction

* tag 'ntb-5.1' of git://github.com/jonmason/ntb:
  NTB: add new parameter to peer_db_addr() db_bit and db_data
  NTB: ntb_transport: Ensure the destination buffer is mapped for TX DMA
  NTB: ntb_transport: Free MWs in ntb_transport_link_cleanup()
  ntb_hw_switchtec: Added support of >=4G memory windows
  ntb_hw_switchtec: NT req id mapping table register entry number should be 512
  ntb_hw_switchtec: debug print 64bit aligned crosslink BAR Numbers

2 files changed, 14 insertions, 6 deletions

diff --git a/include/linux/ntb.h b/include/linux/ntb.h
index 181d16601dd9c..56a92e3ae3ae5 100644
--- a/include/linux/ntb.h
+++ b/include/linux/ntb.h
@@ -296,7 +296,8 @@ struct ntb_dev_ops {
 	int (*db_clear_mask)(struct ntb_dev *ntb, u64 db_bits);
 
 	int (*peer_db_addr)(struct ntb_dev *ntb,
-			    phys_addr_t *db_addr, resource_size_t *db_size);
+			    phys_addr_t *db_addr, resource_size_t *db_size,
+				u64 *db_data, int db_bit);
 	u64 (*peer_db_read)(struct ntb_dev *ntb);
 	int (*peer_db_set)(struct ntb_dev *ntb, u64 db_bits);
 	int (*peer_db_clear)(struct ntb_dev *ntb, u64 db_bits);
@@ -1078,6 +1079,8 @@ static inline int ntb_db_clear_mask(struct ntb_dev *ntb, u64 db_bits)
  * @ntb:	NTB device context.
  * @db_addr:	OUT - The address of the peer doorbell register.
  * @db_size:	OUT - The number of bytes to write the peer doorbell register.
+ * @db_data:	OUT - The data of peer doorbell register
+ * @db_bit:		door bell bit number
  *
  * Return the address of the peer doorbell register.  This may be used, for
  * example, by drivers that offload memory copy operations to a dma engine.
@@ -1091,12 +1094,13 @@ static inline int ntb_db_clear_mask(struct ntb_dev *ntb, u64 db_bits)
  */
 static inline int ntb_peer_db_addr(struct ntb_dev *ntb,
 				   phys_addr_t *db_addr,
-				   resource_size_t *db_size)
+				   resource_size_t *db_size,
+				   u64 *db_data, int db_bit)
 {
 	if (!ntb->ops->peer_db_addr)
 		return -EINVAL;
 
-	return ntb->ops->peer_db_addr(ntb, db_addr, db_size);
+	return ntb->ops->peer_db_addr(ntb, db_addr, db_size, db_data, db_bit);
 }
 
 /**
diff --git a/include/linux/switchtec.h b/include/linux/switchtec.h
index eee0412bdf4b8..52a079b3a9a6d 100644
--- a/include/linux/switchtec.h
+++ b/include/linux/switchtec.h
@@ -248,9 +248,13 @@ struct ntb_ctrl_regs {
 		u32 win_size;
 		u64 xlate_addr;
 	} bar_entry[6];
-	u32 reserved2[216];
-	u32 req_id_table[256];
-	u32 reserved3[512];
+	struct {
+		u32 win_size;
+		u32 reserved[3];
+	} bar_ext_entry[6];
+	u32 reserved2[192];
+	u32 req_id_table[512];
+	u32 reserved3[256];
 	u64 lut_entry[512];
 } __packed;