Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 136 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx5/wr.h b/drivers/infiniband/hw/mlx5/wr.h
new file mode 100644
index 000000000..2dc894380
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/wr.h
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/*
+ * Copyright (c) 2020, Mellanox Technologies inc. All rights reserved.
+ */
+
+#ifndef _MLX5_IB_WR_H
+#define _MLX5_IB_WR_H
+
+#include "mlx5_ib.h"
+
+enum {
+	MLX5_IB_SQ_UMR_INLINE_THRESHOLD = 64,
+};
+
+struct mlx5_wqe_eth_pad {
+	u8 rsvd0[16];
+};
+
+
+/* get_sq_edge - Get the next nearby edge.
+ *
+ * An 'edge' is defined as the first following address after the end
+ * of the fragment or the SQ. Accordingly, during the WQE construction
+ * which repetitively increases the pointer to write the next data, it
+ * simply should check if it gets to an edge.
+ *
+ * @sq - SQ buffer.
+ * @idx - Stride index in the SQ buffer.
+ *
+ * Return:
+ *	The new edge.
+ */
+static inline void *get_sq_edge(struct mlx5_ib_wq *sq, u32 idx)
+{
+	void *fragment_end;
+
+	fragment_end = mlx5_frag_buf_get_wqe
+		(&sq->fbc,
+		 mlx5_frag_buf_get_idx_last_contig_stride(&sq->fbc, idx));
+
+	return fragment_end + MLX5_SEND_WQE_BB;
+}
+
+/* handle_post_send_edge - Check if we get to SQ edge. If yes, update to the
+ * next nearby edge and get new address translation for current WQE position.
+ * @sq: SQ buffer.
+ * @seg: Current WQE position (16B aligned).
+ * @wqe_sz: Total current WQE size [16B].
+ * @cur_edge: Updated current edge.
+ */
+static inline void handle_post_send_edge(struct mlx5_ib_wq *sq, void **seg,
+					 u32 wqe_sz, void **cur_edge)
+{
+	u32 idx;
+
+	if (likely(*seg != *cur_edge))
+		return;
+
+	idx = (sq->cur_post + (wqe_sz >> 2)) & (sq->wqe_cnt - 1);
+	*cur_edge = get_sq_edge(sq, idx);
+
+	*seg = mlx5_frag_buf_get_wqe(&sq->fbc, idx);
+}
+
+/* mlx5r_memcpy_send_wqe - copy data from src to WQE and update the relevant
+ * WQ's pointers. At the end @seg is aligned to 16B regardless the copied size.
+ * @sq: SQ buffer.
+ * @cur_edge: Updated current edge.
+ * @seg: Current WQE position (16B aligned).
+ * @wqe_sz: Total current WQE size [16B].
+ * @src: Pointer to copy from.
+ * @n: Number of bytes to copy.
+ */
+static inline void mlx5r_memcpy_send_wqe(struct mlx5_ib_wq *sq, void **cur_edge,
+					 void **seg, u32 *wqe_sz,
+					 const void *src, size_t n)
+{
+	while (likely(n)) {
+		size_t leftlen = *cur_edge - *seg;
+		size_t copysz = min_t(size_t, leftlen, n);
+		size_t stride;
+
+		memcpy(*seg, src, copysz);
+
+		n -= copysz;
+		src += copysz;
+		stride = !n ? ALIGN(copysz, 16) : copysz;
+		*seg += stride;
+		*wqe_sz += stride >> 4;
+		handle_post_send_edge(sq, seg, *wqe_sz, cur_edge);
+	}
+}
+
+int mlx5r_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq);
+int mlx5r_begin_wqe(struct mlx5_ib_qp *qp, void **seg,
+		    struct mlx5_wqe_ctrl_seg **ctrl, unsigned int *idx,
+		    int *size, void **cur_edge, int nreq, __be32 general_id,
+		    bool send_signaled, bool solicited);
+void mlx5r_finish_wqe(struct mlx5_ib_qp *qp, struct mlx5_wqe_ctrl_seg *ctrl,
+		      void *seg, u8 size, void *cur_edge, unsigned int idx,
+		      u64 wr_id, int nreq, u8 fence, u32 mlx5_opcode);
+void mlx5r_ring_db(struct mlx5_ib_qp *qp, unsigned int nreq,
+		   struct mlx5_wqe_ctrl_seg *ctrl);
+int mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
+		      const struct ib_send_wr **bad_wr, bool drain);
+int mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
+		      const struct ib_recv_wr **bad_wr, bool drain);
+
+static inline int mlx5_ib_post_send_nodrain(struct ib_qp *ibqp,
+					    const struct ib_send_wr *wr,
+					    const struct ib_send_wr **bad_wr)
+{
+	return mlx5_ib_post_send(ibqp, wr, bad_wr, false);
+}
+
+static inline int mlx5_ib_post_send_drain(struct ib_qp *ibqp,
+					  const struct ib_send_wr *wr,
+					  const struct ib_send_wr **bad_wr)
+{
+	return mlx5_ib_post_send(ibqp, wr, bad_wr, true);
+}
+
+static inline int mlx5_ib_post_recv_nodrain(struct ib_qp *ibqp,
+					    const struct ib_recv_wr *wr,
+					    const struct ib_recv_wr **bad_wr)
+{
+	return mlx5_ib_post_recv(ibqp, wr, bad_wr, false);
+}
+
+static inline int mlx5_ib_post_recv_drain(struct ib_qp *ibqp,
+					  const struct ib_recv_wr *wr,
+					  const struct ib_recv_wr **bad_wr)
+{
+	return mlx5_ib_post_recv(ibqp, wr, bad_wr, true);
+}
+#endif /* _MLX5_IB_WR_H */