Adding upstream version 4.19.249.upstream/4.19.249upstream

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

1 files changed, 1232 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/i40iw/i40iw_uk.c b/drivers/infiniband/hw/i40iw/i40iw_uk.c
new file mode 100644
index 000000000..8afa5a67a
--- /dev/null
+++ b/drivers/infiniband/hw/i40iw/i40iw_uk.c
@@ -0,0 +1,1232 @@
+/*******************************************************************************
+*
+* Copyright (c) 2015-2016 Intel Corporation.  All rights reserved.
+*
+* This software is available to you under a choice of one of two
+* licenses.  You may choose to be licensed under the terms of the GNU
+* General Public License (GPL) Version 2, available from the file
+* COPYING in the main directory of this source tree, or the
+* OpenFabrics.org BSD license below:
+*
+*   Redistribution and use in source and binary forms, with or
+*   without modification, are permitted provided that the following
+*   conditions are met:
+*
+*    - Redistributions of source code must retain the above
+*	copyright notice, this list of conditions and the following
+*	disclaimer.
+*
+*    - Redistributions in binary form must reproduce the above
+*	copyright notice, this list of conditions and the following
+*	disclaimer in the documentation and/or other materials
+*	provided with the distribution.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE.
+*
+*******************************************************************************/
+
+#include "i40iw_osdep.h"
+#include "i40iw_status.h"
+#include "i40iw_d.h"
+#include "i40iw_user.h"
+#include "i40iw_register.h"
+
+static u32 nop_signature = 0x55550000;
+
+/**
+ * i40iw_nop_1 - insert a nop wqe and move head. no post work
+ * @qp: hw qp ptr
+ */
+static enum i40iw_status_code i40iw_nop_1(struct i40iw_qp_uk *qp)
+{
+	u64 header, *wqe;
+	u64 *wqe_0 = NULL;
+	u32 wqe_idx, peek_head;
+	bool signaled = false;
+
+	if (!qp->sq_ring.head)
+		return I40IW_ERR_PARAM;
+
+	wqe_idx = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+	wqe = qp->sq_base[wqe_idx].elem;
+
+	qp->sq_wrtrk_array[wqe_idx].wqe_size = I40IW_QP_WQE_MIN_SIZE;
+
+	peek_head = (qp->sq_ring.head + 1) % qp->sq_ring.size;
+	wqe_0 = qp->sq_base[peek_head].elem;
+	if (peek_head)
+		wqe_0[3] = LS_64(!qp->swqe_polarity, I40IWQPSQ_VALID);
+	else
+		wqe_0[3] = LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	set_64bit_val(wqe, 0, 0);
+	set_64bit_val(wqe, 8, 0);
+	set_64bit_val(wqe, 16, 0);
+
+	header = LS_64(I40IWQP_OP_NOP, I40IWQPSQ_OPCODE) |
+	    LS_64(signaled, I40IWQPSQ_SIGCOMPL) |
+	    LS_64(qp->swqe_polarity, I40IWQPSQ_VALID) | nop_signature++;
+
+	wmb();	/* Memory barrier to ensure data is written before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+	return 0;
+}
+
+/**
+ * i40iw_qp_post_wr - post wr to hrdware
+ * @qp: hw qp ptr
+ */
+void i40iw_qp_post_wr(struct i40iw_qp_uk *qp)
+{
+	u64 temp;
+	u32 hw_sq_tail;
+	u32 sw_sq_head;
+
+	mb(); /* valid bit is written and loads completed before reading shadow */
+
+	/* read the doorbell shadow area */
+	get_64bit_val(qp->shadow_area, 0, &temp);
+
+	hw_sq_tail = (u32)RS_64(temp, I40IW_QP_DBSA_HW_SQ_TAIL);
+	sw_sq_head = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+	if (sw_sq_head != hw_sq_tail) {
+		if (sw_sq_head > qp->initial_ring.head) {
+			if ((hw_sq_tail >= qp->initial_ring.head) &&
+			    (hw_sq_tail < sw_sq_head)) {
+				writel(qp->qp_id, qp->wqe_alloc_reg);
+			}
+		} else if (sw_sq_head != qp->initial_ring.head) {
+			if ((hw_sq_tail >= qp->initial_ring.head) ||
+			    (hw_sq_tail < sw_sq_head)) {
+				writel(qp->qp_id, qp->wqe_alloc_reg);
+			}
+		}
+	}
+
+	qp->initial_ring.head = qp->sq_ring.head;
+}
+
+/**
+ * i40iw_qp_ring_push_db -  ring qp doorbell
+ * @qp: hw qp ptr
+ * @wqe_idx: wqe index
+ */
+static void i40iw_qp_ring_push_db(struct i40iw_qp_uk *qp, u32 wqe_idx)
+{
+	set_32bit_val(qp->push_db, 0, LS_32((wqe_idx >> 2), I40E_PFPE_WQEALLOC_WQE_DESC_INDEX) | qp->qp_id);
+	qp->initial_ring.head = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+}
+
+/**
+ * i40iw_qp_get_next_send_wqe - return next wqe ptr
+ * @qp: hw qp ptr
+ * @wqe_idx: return wqe index
+ * @wqe_size: size of sq wqe
+ */
+u64 *i40iw_qp_get_next_send_wqe(struct i40iw_qp_uk *qp,
+				u32 *wqe_idx,
+				u8 wqe_size,
+				u32 total_size,
+				u64 wr_id
+				)
+{
+	u64 *wqe = NULL;
+	u64 wqe_ptr;
+	u32 peek_head = 0;
+	u16 offset;
+	enum i40iw_status_code ret_code = 0;
+	u8 nop_wqe_cnt = 0, i;
+	u64 *wqe_0 = NULL;
+
+	*wqe_idx = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+
+	if (!*wqe_idx)
+		qp->swqe_polarity = !qp->swqe_polarity;
+	wqe_ptr = (uintptr_t)qp->sq_base[*wqe_idx].elem;
+	offset = (u16)(wqe_ptr) & 0x7F;
+	if ((offset + wqe_size) > I40IW_QP_WQE_MAX_SIZE) {
+		nop_wqe_cnt = (u8)(I40IW_QP_WQE_MAX_SIZE - offset) / I40IW_QP_WQE_MIN_SIZE;
+		for (i = 0; i < nop_wqe_cnt; i++) {
+			i40iw_nop_1(qp);
+			I40IW_RING_MOVE_HEAD(qp->sq_ring, ret_code);
+			if (ret_code)
+				return NULL;
+		}
+
+		*wqe_idx = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+		if (!*wqe_idx)
+			qp->swqe_polarity = !qp->swqe_polarity;
+	}
+
+	if (((*wqe_idx & 3) == 1) && (wqe_size == I40IW_WQE_SIZE_64)) {
+		i40iw_nop_1(qp);
+		I40IW_RING_MOVE_HEAD(qp->sq_ring, ret_code);
+		if (ret_code)
+			return NULL;
+		*wqe_idx = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+		if (!*wqe_idx)
+			qp->swqe_polarity = !qp->swqe_polarity;
+	}
+	I40IW_RING_MOVE_HEAD_BY_COUNT(qp->sq_ring,
+				      wqe_size / I40IW_QP_WQE_MIN_SIZE, ret_code);
+	if (ret_code)
+		return NULL;
+
+	wqe = qp->sq_base[*wqe_idx].elem;
+
+	peek_head = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+	wqe_0 = qp->sq_base[peek_head].elem;
+
+	if (((peek_head & 3) == 1) || ((peek_head & 3) == 3)) {
+		if (RS_64(wqe_0[3], I40IWQPSQ_VALID) != !qp->swqe_polarity)
+			wqe_0[3] = LS_64(!qp->swqe_polarity, I40IWQPSQ_VALID);
+	}
+
+	qp->sq_wrtrk_array[*wqe_idx].wrid = wr_id;
+	qp->sq_wrtrk_array[*wqe_idx].wr_len = total_size;
+	qp->sq_wrtrk_array[*wqe_idx].wqe_size = wqe_size;
+	return wqe;
+}
+
+/**
+ * i40iw_set_fragment - set fragment in wqe
+ * @wqe: wqe for setting fragment
+ * @offset: offset value
+ * @sge: sge length and stag
+ */
+static void i40iw_set_fragment(u64 *wqe, u32 offset, struct i40iw_sge *sge)
+{
+	if (sge) {
+		set_64bit_val(wqe, offset, LS_64(sge->tag_off, I40IWQPSQ_FRAG_TO));
+		set_64bit_val(wqe, (offset + 8),
+			      (LS_64(sge->len, I40IWQPSQ_FRAG_LEN) |
+			       LS_64(sge->stag, I40IWQPSQ_FRAG_STAG)));
+	}
+}
+
+/**
+ * i40iw_qp_get_next_recv_wqe - get next qp's rcv wqe
+ * @qp: hw qp ptr
+ * @wqe_idx: return wqe index
+ */
+u64 *i40iw_qp_get_next_recv_wqe(struct i40iw_qp_uk *qp, u32 *wqe_idx)
+{
+	u64 *wqe = NULL;
+	enum i40iw_status_code ret_code;
+
+	if (I40IW_RING_FULL_ERR(qp->rq_ring))
+		return NULL;
+
+	I40IW_ATOMIC_RING_MOVE_HEAD(qp->rq_ring, *wqe_idx, ret_code);
+	if (ret_code)
+		return NULL;
+	if (!*wqe_idx)
+		qp->rwqe_polarity = !qp->rwqe_polarity;
+	/* rq_wqe_size_multiplier is no of qwords in one rq wqe */
+	wqe = qp->rq_base[*wqe_idx * (qp->rq_wqe_size_multiplier >> 2)].elem;
+
+	return wqe;
+}
+
+/**
+ * i40iw_rdma_write - rdma write operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_rdma_write(struct i40iw_qp_uk *qp,
+					       struct i40iw_post_sq_info *info,
+					       bool post_sq)
+{
+	u64 header;
+	u64 *wqe;
+	struct i40iw_rdma_write *op_info;
+	u32 i, wqe_idx;
+	u32 total_size = 0, byte_off;
+	enum i40iw_status_code ret_code;
+	bool read_fence = false;
+	u8 wqe_size;
+
+	op_info = &info->op.rdma_write;
+	if (op_info->num_lo_sges > qp->max_sq_frag_cnt)
+		return I40IW_ERR_INVALID_FRAG_COUNT;
+
+	for (i = 0; i < op_info->num_lo_sges; i++)
+		total_size += op_info->lo_sg_list[i].len;
+
+	if (total_size > I40IW_MAX_OUTBOUND_MESSAGE_SIZE)
+		return I40IW_ERR_QP_INVALID_MSG_SIZE;
+
+	read_fence |= info->read_fence;
+
+	ret_code = i40iw_fragcnt_to_wqesize_sq(op_info->num_lo_sges, &wqe_size);
+	if (ret_code)
+		return ret_code;
+
+	wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size, total_size, info->wr_id);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+	set_64bit_val(wqe, 16,
+		      LS_64(op_info->rem_addr.tag_off, I40IWQPSQ_FRAG_TO));
+	if (!op_info->rem_addr.stag)
+		return I40IW_ERR_BAD_STAG;
+
+	header = LS_64(op_info->rem_addr.stag, I40IWQPSQ_REMSTAG) |
+		 LS_64(I40IWQP_OP_RDMA_WRITE, I40IWQPSQ_OPCODE) |
+		 LS_64((op_info->num_lo_sges > 1 ?  (op_info->num_lo_sges - 1) : 0), I40IWQPSQ_ADDFRAGCNT) |
+		 LS_64(read_fence, I40IWQPSQ_READFENCE) |
+		 LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
+		 LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+		 LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	i40iw_set_fragment(wqe, 0, op_info->lo_sg_list);
+
+	for (i = 1, byte_off = 32; i < op_info->num_lo_sges; i++) {
+		i40iw_set_fragment(wqe, byte_off, &op_info->lo_sg_list[i]);
+		byte_off += 16;
+	}
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+
+	if (post_sq)
+		i40iw_qp_post_wr(qp);
+
+	return 0;
+}
+
+/**
+ * i40iw_rdma_read - rdma read command
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @inv_stag: flag for inv_stag
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_rdma_read(struct i40iw_qp_uk *qp,
+					      struct i40iw_post_sq_info *info,
+					      bool inv_stag,
+					      bool post_sq)
+{
+	u64 *wqe;
+	struct i40iw_rdma_read *op_info;
+	u64 header;
+	u32 wqe_idx;
+	enum i40iw_status_code ret_code;
+	u8 wqe_size;
+	bool local_fence = false;
+
+	op_info = &info->op.rdma_read;
+	ret_code = i40iw_fragcnt_to_wqesize_sq(1, &wqe_size);
+	if (ret_code)
+		return ret_code;
+	wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size, op_info->lo_addr.len, info->wr_id);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+	local_fence |= info->local_fence;
+
+	set_64bit_val(wqe, 16, LS_64(op_info->rem_addr.tag_off, I40IWQPSQ_FRAG_TO));
+	header = LS_64(op_info->rem_addr.stag, I40IWQPSQ_REMSTAG) |
+		 LS_64((inv_stag ? I40IWQP_OP_RDMA_READ_LOC_INV : I40IWQP_OP_RDMA_READ), I40IWQPSQ_OPCODE) |
+		 LS_64(info->read_fence, I40IWQPSQ_READFENCE) |
+		 LS_64(local_fence, I40IWQPSQ_LOCALFENCE) |
+		 LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+		 LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	i40iw_set_fragment(wqe, 0, &op_info->lo_addr);
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+	if (post_sq)
+		i40iw_qp_post_wr(qp);
+
+	return 0;
+}
+
+/**
+ * i40iw_send - rdma send command
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @stag_to_inv: stag_to_inv value
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_send(struct i40iw_qp_uk *qp,
+					 struct i40iw_post_sq_info *info,
+					 u32 stag_to_inv,
+					 bool post_sq)
+{
+	u64 *wqe;
+	struct i40iw_post_send *op_info;
+	u64 header;
+	u32 i, wqe_idx, total_size = 0, byte_off;
+	enum i40iw_status_code ret_code;
+	bool read_fence = false;
+	u8 wqe_size;
+
+	op_info = &info->op.send;
+	if (qp->max_sq_frag_cnt < op_info->num_sges)
+		return I40IW_ERR_INVALID_FRAG_COUNT;
+
+	for (i = 0; i < op_info->num_sges; i++)
+		total_size += op_info->sg_list[i].len;
+	ret_code = i40iw_fragcnt_to_wqesize_sq(op_info->num_sges, &wqe_size);
+	if (ret_code)
+		return ret_code;
+
+	wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size, total_size, info->wr_id);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+	read_fence |= info->read_fence;
+	set_64bit_val(wqe, 16, 0);
+	header = LS_64(stag_to_inv, I40IWQPSQ_REMSTAG) |
+		 LS_64(info->op_type, I40IWQPSQ_OPCODE) |
+		 LS_64((op_info->num_sges > 1 ? (op_info->num_sges - 1) : 0),
+		       I40IWQPSQ_ADDFRAGCNT) |
+		 LS_64(read_fence, I40IWQPSQ_READFENCE) |
+		 LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
+		 LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+		 LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	i40iw_set_fragment(wqe, 0, op_info->sg_list);
+
+	for (i = 1, byte_off = 32; i < op_info->num_sges; i++) {
+		i40iw_set_fragment(wqe, byte_off, &op_info->sg_list[i]);
+		byte_off += 16;
+	}
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+	if (post_sq)
+		i40iw_qp_post_wr(qp);
+
+	return 0;
+}
+
+/**
+ * i40iw_inline_rdma_write - inline rdma write operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_inline_rdma_write(struct i40iw_qp_uk *qp,
+						      struct i40iw_post_sq_info *info,
+						      bool post_sq)
+{
+	u64 *wqe;
+	u8 *dest, *src;
+	struct i40iw_inline_rdma_write *op_info;
+	u64 *push;
+	u64 header = 0;
+	u32 wqe_idx;
+	enum i40iw_status_code ret_code;
+	bool read_fence = false;
+	u8 wqe_size;
+
+	op_info = &info->op.inline_rdma_write;
+	if (op_info->len > I40IW_MAX_INLINE_DATA_SIZE)
+		return I40IW_ERR_INVALID_INLINE_DATA_SIZE;
+
+	ret_code = i40iw_inline_data_size_to_wqesize(op_info->len, &wqe_size);
+	if (ret_code)
+		return ret_code;
+
+	wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size, op_info->len, info->wr_id);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+	read_fence |= info->read_fence;
+	set_64bit_val(wqe, 16,
+		      LS_64(op_info->rem_addr.tag_off, I40IWQPSQ_FRAG_TO));
+
+	header = LS_64(op_info->rem_addr.stag, I40IWQPSQ_REMSTAG) |
+		 LS_64(I40IWQP_OP_RDMA_WRITE, I40IWQPSQ_OPCODE) |
+		 LS_64(op_info->len, I40IWQPSQ_INLINEDATALEN) |
+		 LS_64(1, I40IWQPSQ_INLINEDATAFLAG) |
+		 LS_64((qp->push_db ? 1 : 0), I40IWQPSQ_PUSHWQE) |
+		 LS_64(read_fence, I40IWQPSQ_READFENCE) |
+		 LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
+		 LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+		 LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	dest = (u8 *)wqe;
+	src = (u8 *)(op_info->data);
+
+	if (op_info->len <= 16) {
+		memcpy(dest, src, op_info->len);
+	} else {
+		memcpy(dest, src, 16);
+		src += 16;
+		dest = (u8 *)wqe + 32;
+		memcpy(dest, src, op_info->len - 16);
+	}
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+
+	if (qp->push_db) {
+		push = (u64 *)((uintptr_t)qp->push_wqe + (wqe_idx & 0x3) * 0x20);
+		memcpy(push, wqe, (op_info->len > 16) ? op_info->len + 16 : 32);
+		i40iw_qp_ring_push_db(qp, wqe_idx);
+	} else {
+		if (post_sq)
+			i40iw_qp_post_wr(qp);
+	}
+
+	return 0;
+}
+
+/**
+ * i40iw_inline_send - inline send operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @stag_to_inv: remote stag
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_inline_send(struct i40iw_qp_uk *qp,
+						struct i40iw_post_sq_info *info,
+						u32 stag_to_inv,
+						bool post_sq)
+{
+	u64 *wqe;
+	u8 *dest, *src;
+	struct i40iw_post_inline_send *op_info;
+	u64 header;
+	u32 wqe_idx;
+	enum i40iw_status_code ret_code;
+	bool read_fence = false;
+	u8 wqe_size;
+	u64 *push;
+
+	op_info = &info->op.inline_send;
+	if (op_info->len > I40IW_MAX_INLINE_DATA_SIZE)
+		return I40IW_ERR_INVALID_INLINE_DATA_SIZE;
+
+	ret_code = i40iw_inline_data_size_to_wqesize(op_info->len, &wqe_size);
+	if (ret_code)
+		return ret_code;
+
+	wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size, op_info->len, info->wr_id);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+	read_fence |= info->read_fence;
+	header = LS_64(stag_to_inv, I40IWQPSQ_REMSTAG) |
+	    LS_64(info->op_type, I40IWQPSQ_OPCODE) |
+	    LS_64(op_info->len, I40IWQPSQ_INLINEDATALEN) |
+	    LS_64(1, I40IWQPSQ_INLINEDATAFLAG) |
+	    LS_64((qp->push_db ? 1 : 0), I40IWQPSQ_PUSHWQE) |
+	    LS_64(read_fence, I40IWQPSQ_READFENCE) |
+	    LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
+	    LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+	    LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	dest = (u8 *)wqe;
+	src = (u8 *)(op_info->data);
+
+	if (op_info->len <= 16) {
+		memcpy(dest, src, op_info->len);
+	} else {
+		memcpy(dest, src, 16);
+		src += 16;
+		dest = (u8 *)wqe + 32;
+		memcpy(dest, src, op_info->len - 16);
+	}
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+
+	if (qp->push_db) {
+		push = (u64 *)((uintptr_t)qp->push_wqe + (wqe_idx & 0x3) * 0x20);
+		memcpy(push, wqe, (op_info->len > 16) ? op_info->len + 16 : 32);
+		i40iw_qp_ring_push_db(qp, wqe_idx);
+	} else {
+		if (post_sq)
+			i40iw_qp_post_wr(qp);
+	}
+
+	return 0;
+}
+
+/**
+ * i40iw_stag_local_invalidate - stag invalidate operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_stag_local_invalidate(struct i40iw_qp_uk *qp,
+							  struct i40iw_post_sq_info *info,
+							  bool post_sq)
+{
+	u64 *wqe;
+	struct i40iw_inv_local_stag *op_info;
+	u64 header;
+	u32 wqe_idx;
+	bool local_fence = false;
+
+	op_info = &info->op.inv_local_stag;
+	local_fence = info->local_fence;
+
+	wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, I40IW_QP_WQE_MIN_SIZE, 0, info->wr_id);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+	set_64bit_val(wqe, 0, 0);
+	set_64bit_val(wqe, 8,
+		      LS_64(op_info->target_stag, I40IWQPSQ_LOCSTAG));
+	set_64bit_val(wqe, 16, 0);
+	header = LS_64(I40IW_OP_TYPE_INV_STAG, I40IWQPSQ_OPCODE) |
+	    LS_64(info->read_fence, I40IWQPSQ_READFENCE) |
+	    LS_64(local_fence, I40IWQPSQ_LOCALFENCE) |
+	    LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+	    LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+
+	if (post_sq)
+		i40iw_qp_post_wr(qp);
+
+	return 0;
+}
+
+/**
+ * i40iw_mw_bind - Memory Window bind operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_mw_bind(struct i40iw_qp_uk *qp,
+					    struct i40iw_post_sq_info *info,
+					    bool post_sq)
+{
+	u64 *wqe;
+	struct i40iw_bind_window *op_info;
+	u64 header;
+	u32 wqe_idx;
+	bool local_fence = false;
+
+	op_info = &info->op.bind_window;
+
+	local_fence |= info->local_fence;
+	wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, I40IW_QP_WQE_MIN_SIZE, 0, info->wr_id);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+	set_64bit_val(wqe, 0, (uintptr_t)op_info->va);
+	set_64bit_val(wqe, 8,
+		      LS_64(op_info->mr_stag, I40IWQPSQ_PARENTMRSTAG) |
+		      LS_64(op_info->mw_stag, I40IWQPSQ_MWSTAG));
+	set_64bit_val(wqe, 16, op_info->bind_length);
+	header = LS_64(I40IW_OP_TYPE_BIND_MW, I40IWQPSQ_OPCODE) |
+	    LS_64(((op_info->enable_reads << 2) |
+		   (op_info->enable_writes << 3)),
+		  I40IWQPSQ_STAGRIGHTS) |
+	    LS_64((op_info->addressing_type == I40IW_ADDR_TYPE_VA_BASED ?  1 : 0),
+		  I40IWQPSQ_VABASEDTO) |
+	    LS_64(info->read_fence, I40IWQPSQ_READFENCE) |
+	    LS_64(local_fence, I40IWQPSQ_LOCALFENCE) |
+	    LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+	    LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+
+	if (post_sq)
+		i40iw_qp_post_wr(qp);
+
+	return 0;
+}
+
+/**
+ * i40iw_post_receive - post receive wqe
+ * @qp: hw qp ptr
+ * @info: post rq information
+ */
+static enum i40iw_status_code i40iw_post_receive(struct i40iw_qp_uk *qp,
+						 struct i40iw_post_rq_info *info)
+{
+	u64 *wqe;
+	u64 header;
+	u32 total_size = 0, wqe_idx, i, byte_off;
+
+	if (qp->max_rq_frag_cnt < info->num_sges)
+		return I40IW_ERR_INVALID_FRAG_COUNT;
+	for (i = 0; i < info->num_sges; i++)
+		total_size += info->sg_list[i].len;
+	wqe = i40iw_qp_get_next_recv_wqe(qp, &wqe_idx);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+	qp->rq_wrid_array[wqe_idx] = info->wr_id;
+	set_64bit_val(wqe, 16, 0);
+
+	header = LS_64((info->num_sges > 1 ? (info->num_sges - 1) : 0),
+		       I40IWQPSQ_ADDFRAGCNT) |
+	    LS_64(qp->rwqe_polarity, I40IWQPSQ_VALID);
+
+	i40iw_set_fragment(wqe, 0, info->sg_list);
+
+	for (i = 1, byte_off = 32; i < info->num_sges; i++) {
+		i40iw_set_fragment(wqe, byte_off, &info->sg_list[i]);
+		byte_off += 16;
+	}
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+
+	return 0;
+}
+
+/**
+ * i40iw_cq_request_notification - cq notification request (door bell)
+ * @cq: hw cq
+ * @cq_notify: notification type
+ */
+static void i40iw_cq_request_notification(struct i40iw_cq_uk *cq,
+					  enum i40iw_completion_notify cq_notify)
+{
+	u64 temp_val;
+	u16 sw_cq_sel;
+	u8 arm_next_se = 0;
+	u8 arm_next = 0;
+	u8 arm_seq_num;
+
+	get_64bit_val(cq->shadow_area, 32, &temp_val);
+	arm_seq_num = (u8)RS_64(temp_val, I40IW_CQ_DBSA_ARM_SEQ_NUM);
+	arm_seq_num++;
+
+	sw_cq_sel = (u16)RS_64(temp_val, I40IW_CQ_DBSA_SW_CQ_SELECT);
+	arm_next_se = (u8)RS_64(temp_val, I40IW_CQ_DBSA_ARM_NEXT_SE);
+	arm_next_se |= 1;
+	if (cq_notify == IW_CQ_COMPL_EVENT)
+		arm_next = 1;
+	temp_val = LS_64(arm_seq_num, I40IW_CQ_DBSA_ARM_SEQ_NUM) |
+	    LS_64(sw_cq_sel, I40IW_CQ_DBSA_SW_CQ_SELECT) |
+	    LS_64(arm_next_se, I40IW_CQ_DBSA_ARM_NEXT_SE) |
+	    LS_64(arm_next, I40IW_CQ_DBSA_ARM_NEXT);
+
+	set_64bit_val(cq->shadow_area, 32, temp_val);
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	writel(cq->cq_id, cq->cqe_alloc_reg);
+}
+
+/**
+ * i40iw_cq_post_entries - update tail in shadow memory
+ * @cq: hw cq
+ * @count: # of entries processed
+ */
+static enum i40iw_status_code i40iw_cq_post_entries(struct i40iw_cq_uk *cq,
+						    u8 count)
+{
+	I40IW_RING_MOVE_TAIL_BY_COUNT(cq->cq_ring, count);
+	set_64bit_val(cq->shadow_area, 0,
+		      I40IW_RING_GETCURRENT_HEAD(cq->cq_ring));
+	return 0;
+}
+
+/**
+ * i40iw_cq_poll_completion - get cq completion info
+ * @cq: hw cq
+ * @info: cq poll information returned
+ * @post_cq: update cq tail
+ */
+static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq,
+						       struct i40iw_cq_poll_info *info)
+{
+	u64 comp_ctx, qword0, qword2, qword3, wqe_qword;
+	u64 *cqe, *sw_wqe;
+	struct i40iw_qp_uk *qp;
+	struct i40iw_ring *pring = NULL;
+	u32 wqe_idx, q_type, array_idx = 0;
+	enum i40iw_status_code ret_code = 0;
+	bool move_cq_head = true;
+	u8 polarity;
+	u8 addl_wqes = 0;
+
+	if (cq->avoid_mem_cflct)
+		cqe = (u64 *)I40IW_GET_CURRENT_EXTENDED_CQ_ELEMENT(cq);
+	else
+		cqe = (u64 *)I40IW_GET_CURRENT_CQ_ELEMENT(cq);
+
+	get_64bit_val(cqe, 24, &qword3);
+	polarity = (u8)RS_64(qword3, I40IW_CQ_VALID);
+
+	if (polarity != cq->polarity)
+		return I40IW_ERR_QUEUE_EMPTY;
+
+	q_type = (u8)RS_64(qword3, I40IW_CQ_SQ);
+	info->error = (bool)RS_64(qword3, I40IW_CQ_ERROR);
+	info->push_dropped = (bool)RS_64(qword3, I40IWCQ_PSHDROP);
+	if (info->error) {
+		info->comp_status = I40IW_COMPL_STATUS_FLUSHED;
+		info->major_err = (bool)RS_64(qword3, I40IW_CQ_MAJERR);
+		info->minor_err = (bool)RS_64(qword3, I40IW_CQ_MINERR);
+	} else {
+		info->comp_status = I40IW_COMPL_STATUS_SUCCESS;
+	}
+
+	get_64bit_val(cqe, 0, &qword0);
+	get_64bit_val(cqe, 16, &qword2);
+
+	info->tcp_seq_num = (u32)RS_64(qword0, I40IWCQ_TCPSEQNUM);
+
+	info->qp_id = (u32)RS_64(qword2, I40IWCQ_QPID);
+
+	get_64bit_val(cqe, 8, &comp_ctx);
+
+	info->solicited_event = (bool)RS_64(qword3, I40IWCQ_SOEVENT);
+	info->is_srq = (bool)RS_64(qword3, I40IWCQ_SRQ);
+
+	qp = (struct i40iw_qp_uk *)(unsigned long)comp_ctx;
+	if (!qp) {
+		ret_code = I40IW_ERR_QUEUE_DESTROYED;
+		goto exit;
+	}
+	wqe_idx = (u32)RS_64(qword3, I40IW_CQ_WQEIDX);
+	info->qp_handle = (i40iw_qp_handle)(unsigned long)qp;
+
+	if (q_type == I40IW_CQE_QTYPE_RQ) {
+		array_idx = (wqe_idx * 4) / qp->rq_wqe_size_multiplier;
+		if (info->comp_status == I40IW_COMPL_STATUS_FLUSHED) {
+			info->wr_id = qp->rq_wrid_array[qp->rq_ring.tail];
+			array_idx = qp->rq_ring.tail;
+		} else {
+			info->wr_id = qp->rq_wrid_array[array_idx];
+		}
+
+		info->op_type = I40IW_OP_TYPE_REC;
+		if (qword3 & I40IWCQ_STAG_MASK) {
+			info->stag_invalid_set = true;
+			info->inv_stag = (u32)RS_64(qword2, I40IWCQ_INVSTAG);
+		} else {
+			info->stag_invalid_set = false;
+		}
+		info->bytes_xfered = (u32)RS_64(qword0, I40IWCQ_PAYLDLEN);
+		I40IW_RING_SET_TAIL(qp->rq_ring, array_idx + 1);
+		pring = &qp->rq_ring;
+	} else {
+		if (qp->first_sq_wq) {
+			qp->first_sq_wq = false;
+			if (!wqe_idx && (qp->sq_ring.head == qp->sq_ring.tail)) {
+				I40IW_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
+				I40IW_RING_MOVE_TAIL(cq->cq_ring);
+				set_64bit_val(cq->shadow_area, 0,
+					      I40IW_RING_GETCURRENT_HEAD(cq->cq_ring));
+				memset(info, 0, sizeof(struct i40iw_cq_poll_info));
+				return i40iw_cq_poll_completion(cq, info);
+			}
+		}
+
+		if (info->comp_status != I40IW_COMPL_STATUS_FLUSHED) {
+			info->wr_id = qp->sq_wrtrk_array[wqe_idx].wrid;
+			info->bytes_xfered = qp->sq_wrtrk_array[wqe_idx].wr_len;
+
+			info->op_type = (u8)RS_64(qword3, I40IWCQ_OP);
+			sw_wqe = qp->sq_base[wqe_idx].elem;
+			get_64bit_val(sw_wqe, 24, &wqe_qword);
+
+			addl_wqes = qp->sq_wrtrk_array[wqe_idx].wqe_size / I40IW_QP_WQE_MIN_SIZE;
+			I40IW_RING_SET_TAIL(qp->sq_ring, (wqe_idx + addl_wqes));
+		} else {
+			do {
+				u8 op_type;
+				u32 tail;
+
+				tail = qp->sq_ring.tail;
+				sw_wqe = qp->sq_base[tail].elem;
+				get_64bit_val(sw_wqe, 24, &wqe_qword);
+				op_type = (u8)RS_64(wqe_qword, I40IWQPSQ_OPCODE);
+				info->op_type = op_type;
+				addl_wqes = qp->sq_wrtrk_array[tail].wqe_size / I40IW_QP_WQE_MIN_SIZE;
+				I40IW_RING_SET_TAIL(qp->sq_ring, (tail + addl_wqes));
+				if (op_type != I40IWQP_OP_NOP) {
+					info->wr_id = qp->sq_wrtrk_array[tail].wrid;
+					info->bytes_xfered = qp->sq_wrtrk_array[tail].wr_len;
+					break;
+				}
+			} while (1);
+		}
+		pring = &qp->sq_ring;
+	}
+
+	ret_code = 0;
+
+exit:
+	if (!ret_code &&
+	    (info->comp_status == I40IW_COMPL_STATUS_FLUSHED))
+		if (pring && (I40IW_RING_MORE_WORK(*pring)))
+			move_cq_head = false;
+
+	if (move_cq_head) {
+		I40IW_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
+
+		if (I40IW_RING_GETCURRENT_HEAD(cq->cq_ring) == 0)
+			cq->polarity ^= 1;
+
+		I40IW_RING_MOVE_TAIL(cq->cq_ring);
+		set_64bit_val(cq->shadow_area, 0,
+			      I40IW_RING_GETCURRENT_HEAD(cq->cq_ring));
+	} else {
+		if (info->is_srq)
+			return ret_code;
+		qword3 &= ~I40IW_CQ_WQEIDX_MASK;
+		qword3 |= LS_64(pring->tail, I40IW_CQ_WQEIDX);
+		set_64bit_val(cqe, 24, qword3);
+	}
+
+	return ret_code;
+}
+
+/**
+ * i40iw_get_wqe_shift - get shift count for maximum wqe size
+ * @sge: Maximum Scatter Gather Elements wqe
+ * @inline_data: Maximum inline data size
+ * @shift: Returns the shift needed based on sge
+ *
+ * Shift can be used to left shift the wqe size based on number of SGEs and inlind data size.
+ * For 1 SGE or inline data <= 16, shift = 0 (wqe size of 32 bytes).
+ * For 2 or 3 SGEs or inline data <= 48, shift = 1 (wqe size of 64 bytes).
+ * Shift of 2 otherwise (wqe size of 128 bytes).
+ */
+void i40iw_get_wqe_shift(u32 sge, u32 inline_data, u8 *shift)
+{
+	*shift = 0;
+	if (sge > 1 || inline_data > 16)
+		*shift = (sge < 4 && inline_data <= 48) ? 1 : 2;
+}
+
+/*
+ * i40iw_get_sqdepth - get SQ depth (quantas)
+ * @sq_size: SQ size
+ * @shift: shift which determines size of WQE
+ * @sqdepth: depth of SQ
+ *
+ */
+enum i40iw_status_code i40iw_get_sqdepth(u32 sq_size, u8 shift, u32 *sqdepth)
+{
+	*sqdepth = roundup_pow_of_two((sq_size << shift) + I40IW_SQ_RSVD);
+
+	if (*sqdepth < (I40IW_QP_SW_MIN_WQSIZE << shift))
+		*sqdepth = I40IW_QP_SW_MIN_WQSIZE << shift;
+	else if (*sqdepth > I40IW_QP_SW_MAX_SQ_QUANTAS)
+		return I40IW_ERR_INVALID_SIZE;
+
+	return 0;
+}
+
+/*
+ * i40iw_get_rq_depth - get RQ depth (quantas)
+ * @rq_size: RQ size
+ * @shift: shift which determines size of WQE
+ * @rqdepth: depth of RQ
+ *
+ */
+enum i40iw_status_code i40iw_get_rqdepth(u32 rq_size, u8 shift, u32 *rqdepth)
+{
+	*rqdepth = roundup_pow_of_two((rq_size << shift) + I40IW_RQ_RSVD);
+
+	if (*rqdepth < (I40IW_QP_SW_MIN_WQSIZE << shift))
+		*rqdepth = I40IW_QP_SW_MIN_WQSIZE << shift;
+	else if (*rqdepth > I40IW_QP_SW_MAX_RQ_QUANTAS)
+		return I40IW_ERR_INVALID_SIZE;
+
+	return 0;
+}
+
+static const struct i40iw_qp_uk_ops iw_qp_uk_ops = {
+	.iw_qp_post_wr = i40iw_qp_post_wr,
+	.iw_qp_ring_push_db = i40iw_qp_ring_push_db,
+	.iw_rdma_write = i40iw_rdma_write,
+	.iw_rdma_read = i40iw_rdma_read,
+	.iw_send = i40iw_send,
+	.iw_inline_rdma_write = i40iw_inline_rdma_write,
+	.iw_inline_send = i40iw_inline_send,
+	.iw_stag_local_invalidate = i40iw_stag_local_invalidate,
+	.iw_mw_bind = i40iw_mw_bind,
+	.iw_post_receive = i40iw_post_receive,
+	.iw_post_nop = i40iw_nop
+};
+
+static const struct i40iw_cq_ops iw_cq_ops = {
+	.iw_cq_request_notification = i40iw_cq_request_notification,
+	.iw_cq_poll_completion = i40iw_cq_poll_completion,
+	.iw_cq_post_entries = i40iw_cq_post_entries,
+	.iw_cq_clean = i40iw_clean_cq
+};
+
+static const struct i40iw_device_uk_ops iw_device_uk_ops = {
+	.iwarp_cq_uk_init = i40iw_cq_uk_init,
+	.iwarp_qp_uk_init = i40iw_qp_uk_init,
+};
+
+/**
+ * i40iw_qp_uk_init - initialize shared qp
+ * @qp: hw qp (user and kernel)
+ * @info: qp initialization info
+ *
+ * initializes the vars used in both user and kernel mode.
+ * size of the wqe depends on numbers of max. fragements
+ * allowed. Then size of wqe * the number of wqes should be the
+ * amount of memory allocated for sq and rq. If srq is used,
+ * then rq_base will point to one rq wqe only (not the whole
+ * array of wqes)
+ */
+enum i40iw_status_code i40iw_qp_uk_init(struct i40iw_qp_uk *qp,
+					struct i40iw_qp_uk_init_info *info)
+{
+	enum i40iw_status_code ret_code = 0;
+	u32 sq_ring_size;
+	u8 sqshift, rqshift;
+
+	if (info->max_sq_frag_cnt > I40IW_MAX_WQ_FRAGMENT_COUNT)
+		return I40IW_ERR_INVALID_FRAG_COUNT;
+
+	if (info->max_rq_frag_cnt > I40IW_MAX_WQ_FRAGMENT_COUNT)
+		return I40IW_ERR_INVALID_FRAG_COUNT;
+	i40iw_get_wqe_shift(info->max_sq_frag_cnt, info->max_inline_data, &sqshift);
+
+	qp->sq_base = info->sq;
+	qp->rq_base = info->rq;
+	qp->shadow_area = info->shadow_area;
+	qp->sq_wrtrk_array = info->sq_wrtrk_array;
+	qp->rq_wrid_array = info->rq_wrid_array;
+
+	qp->wqe_alloc_reg = info->wqe_alloc_reg;
+	qp->qp_id = info->qp_id;
+
+	qp->sq_size = info->sq_size;
+	qp->push_db = info->push_db;
+	qp->push_wqe = info->push_wqe;
+
+	qp->max_sq_frag_cnt = info->max_sq_frag_cnt;
+	sq_ring_size = qp->sq_size << sqshift;
+
+	I40IW_RING_INIT(qp->sq_ring, sq_ring_size);
+	I40IW_RING_INIT(qp->initial_ring, sq_ring_size);
+	I40IW_RING_MOVE_HEAD(qp->sq_ring, ret_code);
+	I40IW_RING_MOVE_TAIL(qp->sq_ring);
+	I40IW_RING_MOVE_HEAD(qp->initial_ring, ret_code);
+	qp->swqe_polarity = 1;
+	qp->first_sq_wq = true;
+	qp->swqe_polarity_deferred = 1;
+	qp->rwqe_polarity = 0;
+
+	if (!qp->use_srq) {
+		qp->rq_size = info->rq_size;
+		qp->max_rq_frag_cnt = info->max_rq_frag_cnt;
+		I40IW_RING_INIT(qp->rq_ring, qp->rq_size);
+		switch (info->abi_ver) {
+		case 4:
+			i40iw_get_wqe_shift(info->max_rq_frag_cnt, 0, &rqshift);
+			break;
+		case 5: /* fallthrough until next ABI version */
+		default:
+			rqshift = I40IW_MAX_RQ_WQE_SHIFT;
+			break;
+		}
+		qp->rq_wqe_size = rqshift;
+		qp->rq_wqe_size_multiplier = 4 << rqshift;
+	}
+	qp->ops = iw_qp_uk_ops;
+
+	return ret_code;
+}
+
+/**
+ * i40iw_cq_uk_init - initialize shared cq (user and kernel)
+ * @cq: hw cq
+ * @info: hw cq initialization info
+ */
+enum i40iw_status_code i40iw_cq_uk_init(struct i40iw_cq_uk *cq,
+					struct i40iw_cq_uk_init_info *info)
+{
+	if ((info->cq_size < I40IW_MIN_CQ_SIZE) ||
+	    (info->cq_size > I40IW_MAX_CQ_SIZE))
+		return I40IW_ERR_INVALID_SIZE;
+	cq->cq_base = (struct i40iw_cqe *)info->cq_base;
+	cq->cq_id = info->cq_id;
+	cq->cq_size = info->cq_size;
+	cq->cqe_alloc_reg = info->cqe_alloc_reg;
+	cq->shadow_area = info->shadow_area;
+	cq->avoid_mem_cflct = info->avoid_mem_cflct;
+
+	I40IW_RING_INIT(cq->cq_ring, cq->cq_size);
+	cq->polarity = 1;
+	cq->ops = iw_cq_ops;
+
+	return 0;
+}
+
+/**
+ * i40iw_device_init_uk - setup routines for iwarp shared device
+ * @dev: iwarp shared (user and kernel)
+ */
+void i40iw_device_init_uk(struct i40iw_dev_uk *dev)
+{
+	dev->ops_uk = iw_device_uk_ops;
+}
+
+/**
+ * i40iw_clean_cq - clean cq entries
+ * @ queue completion context
+ * @cq: cq to clean
+ */
+void i40iw_clean_cq(void *queue, struct i40iw_cq_uk *cq)
+{
+	u64 *cqe;
+	u64 qword3, comp_ctx;
+	u32 cq_head;
+	u8 polarity, temp;
+
+	cq_head = cq->cq_ring.head;
+	temp = cq->polarity;
+	do {
+		if (cq->avoid_mem_cflct)
+			cqe = (u64 *)&(((struct i40iw_extended_cqe *)cq->cq_base)[cq_head]);
+		else
+			cqe = (u64 *)&cq->cq_base[cq_head];
+		get_64bit_val(cqe, 24, &qword3);
+		polarity = (u8)RS_64(qword3, I40IW_CQ_VALID);
+
+		if (polarity != temp)
+			break;
+
+		get_64bit_val(cqe, 8, &comp_ctx);
+		if ((void *)(unsigned long)comp_ctx == queue)
+			set_64bit_val(cqe, 8, 0);
+
+		cq_head = (cq_head + 1) % cq->cq_ring.size;
+		if (!cq_head)
+			temp ^= 1;
+	} while (true);
+}
+
+/**
+ * i40iw_nop - send a nop
+ * @qp: hw qp ptr
+ * @wr_id: work request id
+ * @signaled: flag if signaled for completion
+ * @post_sq: flag to post sq
+ */
+enum i40iw_status_code i40iw_nop(struct i40iw_qp_uk *qp,
+				 u64 wr_id,
+				 bool signaled,
+				 bool post_sq)
+{
+	u64 header, *wqe;
+	u32 wqe_idx;
+
+	wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, I40IW_QP_WQE_MIN_SIZE, 0, wr_id);
+	if (!wqe)
+		return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+	set_64bit_val(wqe, 0, 0);
+	set_64bit_val(wqe, 8, 0);
+	set_64bit_val(wqe, 16, 0);
+
+	header = LS_64(I40IWQP_OP_NOP, I40IWQPSQ_OPCODE) |
+	    LS_64(signaled, I40IWQPSQ_SIGCOMPL) |
+	    LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+	wmb(); /* make sure WQE is populated before valid bit is set */
+
+	set_64bit_val(wqe, 24, header);
+	if (post_sq)
+		i40iw_qp_post_wr(qp);
+
+	return 0;
+}
+
+/**
+ * i40iw_fragcnt_to_wqesize_sq - calculate wqe size based on fragment count for SQ
+ * @frag_cnt: number of fragments
+ * @wqe_size: size of sq wqe returned
+ */
+enum i40iw_status_code i40iw_fragcnt_to_wqesize_sq(u32 frag_cnt, u8 *wqe_size)
+{
+	switch (frag_cnt) {
+	case 0:
+	case 1:
+		*wqe_size = I40IW_QP_WQE_MIN_SIZE;
+		break;
+	case 2:
+	case 3:
+		*wqe_size = 64;
+		break;
+	case 4:
+	case 5:
+		*wqe_size = 96;
+		break;
+	case 6:
+	case 7:
+		*wqe_size = 128;
+		break;
+	default:
+		return I40IW_ERR_INVALID_FRAG_COUNT;
+	}
+
+	return 0;
+}
+
+/**
+ * i40iw_fragcnt_to_wqesize_rq - calculate wqe size based on fragment count for RQ
+ * @frag_cnt: number of fragments
+ * @wqe_size: size of rq wqe returned
+ */
+enum i40iw_status_code i40iw_fragcnt_to_wqesize_rq(u32 frag_cnt, u8 *wqe_size)
+{
+	switch (frag_cnt) {
+	case 0:
+	case 1:
+		*wqe_size = 32;
+		break;
+	case 2:
+	case 3:
+		*wqe_size = 64;
+		break;
+	case 4:
+	case 5:
+	case 6:
+	case 7:
+		*wqe_size = 128;
+		break;
+	default:
+		return I40IW_ERR_INVALID_FRAG_COUNT;
+	}
+
+	return 0;
+}
+
+/**
+ * i40iw_inline_data_size_to_wqesize - based on inline data, wqe size
+ * @data_size: data size for inline
+ * @wqe_size: size of sq wqe returned
+ */
+enum i40iw_status_code i40iw_inline_data_size_to_wqesize(u32 data_size,
+							 u8 *wqe_size)
+{
+	if (data_size > I40IW_MAX_INLINE_DATA_SIZE)
+		return I40IW_ERR_INVALID_INLINE_DATA_SIZE;
+
+	if (data_size <= 16)
+		*wqe_size = I40IW_QP_WQE_MIN_SIZE;
+	else
+		*wqe_size = 64;
+
+	return 0;
+}