Merge branch 'tid-read' into hfi1-tid

This is the series for adding TID RDMA read. Kaike put in a lot of
effort into making this more consumable for review so special thanks to
him.

Allocating resources and tracing are separated out followed by patches
which build up the read request. Then we have the patches to receive
incoming TID RDMA read requests and handle integration with the RC
protocol.

See the cover letter of the original posting for more of a detailed
overview of TID.

https://www.spinics.net/lists/linux-rdma/msg66611.html

* tid-read:
  IB/hfi1: Add static trace for TID RDMA READ protocol
  IB/hfi1: Enable TID RDMA READ protocol
  IB/hfi1: Add interlock between a TID RDMA request and other requests
  IB/hfi1: Integrate TID RDMA READ protocol into RC protocol
  IB/hfi1: Increment the retry timeout value for TID RDMA READ request
  IB/hfi1: Add functions for restarting TID RDMA READ request
  IB/hfi1: Add TID RDMA handlers
  IB/hfi1: Add functions to receive TID RDMA READ response
  IB/hfi1: Add a function to build TID RDMA READ response
  IB/hfi1: Add functions to receive TID RDMA READ request
  IB/hfi1: Set PbcInsertHcrc for TID RDMA packets
  IB/hfi1: Add functions to build TID RDMA READ request
  IB/hfi1: Add static trace for flow and TID management functions
  IB/hfi1: Add the counter n_tidwait
  IB/hfi1: TID RDMA RcvArray programming and TID allocation
  IB/hfi1: TID RDMA flow allocation
  IB/hfi: Move RC functions into a header file

Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/include/rdma/tid_rdma_defs.h b/include/rdma/tid_rdma_defs.h
new file mode 100644
index 000000000000..1c431ea32b52
--- /dev/null
+++ b/include/rdma/tid_rdma_defs.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/*
+ * Copyright(c) 2018 Intel Corporation.
+ *
+ */
+
+#ifndef TID_RDMA_DEFS_H
+#define TID_RDMA_DEFS_H
+
+#include <rdma/ib_pack.h>
+
+struct tid_rdma_read_req {
+	__le32 kdeth0;
+	__le32 kdeth1;
+	struct ib_reth reth;
+	__be32 tid_flow_psn;
+	__be32 tid_flow_qp;
+	__be32 verbs_qp;
+};
+
+struct tid_rdma_read_resp {
+	__le32 kdeth0;
+	__le32 kdeth1;
+	__be32 aeth;
+	__be32 reserved[4];
+	__be32 verbs_psn;
+	__be32 verbs_qp;
+};
+
+/*
+ * TID RDMA Opcodes
+ */
+#define IB_OPCODE_TID_RDMA 0xe0
+enum {
+	IB_OPCODE_READ_REQ        = 0x4,
+	IB_OPCODE_READ_RESP       = 0x5,
+
+	IB_OPCODE(TID_RDMA, READ_REQ),
+	IB_OPCODE(TID_RDMA, READ_RESP),
+};
+
+#define TID_OP(x) IB_OPCODE_TID_RDMA_##x
+
+/*
+ * Define TID RDMA specific WR opcodes. The ib_wr_opcode
+ * enum already provides some reserved values for use by
+ * low level drivers. Two of those are used but renamed
+ * to be more descriptive.
+ */
+#define IB_WR_TID_RDMA_READ  IB_WR_RESERVED2
+
+#endif /* TID_RDMA_DEFS_H */