opnsense-src/sys/dev/irdma/irdma_uk.c

/*-
 * SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
 *
 * Copyright (c) 2015 - 2021 Intel Corporation
 *
 * 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.
 */
/*$FreeBSD$*/

#include "osdep.h"
#include "irdma_defs.h"
#include "irdma_user.h"
#include "irdma.h"

/**
 * irdma_set_fragment - set fragment in wqe
 * @wqe: wqe for setting fragment
 * @offset: offset value
 * @sge: sge length and stag
 * @valid: The wqe valid
 */
static void
irdma_set_fragment(__le64 * wqe, u32 offset, struct irdma_sge *sge,
		   u8 valid)
{
	if (sge) {
		set_64bit_val(wqe, offset,
			      LS_64(sge->tag_off, IRDMAQPSQ_FRAG_TO));
		set_64bit_val(wqe, offset + IRDMA_BYTE_8,
			      LS_64(valid, IRDMAQPSQ_VALID) |
			      LS_64(sge->len, IRDMAQPSQ_FRAG_LEN) |
			      LS_64(sge->stag, IRDMAQPSQ_FRAG_STAG));
	} else {
		set_64bit_val(wqe, offset, 0);
		set_64bit_val(wqe, offset + IRDMA_BYTE_8,
			      LS_64(valid, IRDMAQPSQ_VALID));
	}
}

/**
 * irdma_set_fragment_gen_1 - set fragment in wqe
 * @wqe: wqe for setting fragment
 * @offset: offset value
 * @sge: sge length and stag
 * @valid: wqe valid flag
 */
static void
irdma_set_fragment_gen_1(__le64 * wqe, u32 offset,
			 struct irdma_sge *sge, u8 valid)
{
	if (sge) {
		set_64bit_val(wqe, offset,
			      LS_64(sge->tag_off, IRDMAQPSQ_FRAG_TO));
		set_64bit_val(wqe, offset + IRDMA_BYTE_8,
			      LS_64(sge->len, IRDMAQPSQ_GEN1_FRAG_LEN) |
			      LS_64(sge->stag, IRDMAQPSQ_GEN1_FRAG_STAG));
	} else {
		set_64bit_val(wqe, offset, 0);
		set_64bit_val(wqe, offset + IRDMA_BYTE_8, 0);
	}
}

/**
 * irdma_nop_1 - insert a NOP wqe
 * @qp: hw qp ptr
 */
static int
irdma_nop_1(struct irdma_qp_uk *qp)
{
	u64 hdr;
	__le64 *wqe;
	u32 wqe_idx;
	bool signaled = false;

	if (!qp->sq_ring.head)
		return -EINVAL;

	wqe_idx = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
	wqe = qp->sq_base[wqe_idx].elem;

	qp->sq_wrtrk_array[wqe_idx].quanta = IRDMA_QP_WQE_MIN_QUANTA;

	set_64bit_val(wqe, IRDMA_BYTE_0, 0);
	set_64bit_val(wqe, IRDMA_BYTE_8, 0);
	set_64bit_val(wqe, IRDMA_BYTE_16, 0);

	hdr = LS_64(IRDMAQP_OP_NOP, IRDMAQPSQ_OPCODE) |
	    LS_64(signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	/* make sure WQE is written before valid bit is set */
	irdma_wmb();

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);

	return 0;
}

/**
 * irdma_clr_wqes - clear next 128 sq entries
 * @qp: hw qp ptr
 * @qp_wqe_idx: wqe_idx
 */
void
irdma_clr_wqes(struct irdma_qp_uk *qp, u32 qp_wqe_idx)
{
	__le64 *wqe;
	u32 wqe_idx;

	if (!(qp_wqe_idx & 0x7F)) {
		wqe_idx = (qp_wqe_idx + 128) % qp->sq_ring.size;
		wqe = qp->sq_base[wqe_idx].elem;
		if (wqe_idx)
			memset(wqe, qp->swqe_polarity ? 0 : 0xFF, 0x1000);
		else
			memset(wqe, qp->swqe_polarity ? 0xFF : 0, 0x1000);
	}
}

/**
 * irdma_uk_qp_post_wr - ring doorbell
 * @qp: hw qp ptr
 */
void
irdma_uk_qp_post_wr(struct irdma_qp_uk *qp)
{
	u64 temp;
	u32 hw_sq_tail;
	u32 sw_sq_head;

	/* valid bit is written and loads completed before reading shadow */
	irdma_mb();

	/* read the doorbell shadow area */
	get_64bit_val(qp->shadow_area, IRDMA_BYTE_0, &temp);

	hw_sq_tail = (u32)RS_64(temp, IRDMA_QP_DBSA_HW_SQ_TAIL);
	sw_sq_head = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
	if (sw_sq_head != qp->initial_ring.head) {
		if (qp->push_dropped) {
			db_wr32(qp->qp_id, qp->wqe_alloc_db);
			qp->push_dropped = false;
		} else 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)
					db_wr32(qp->qp_id, qp->wqe_alloc_db);
			} else {
				if (hw_sq_tail >= qp->initial_ring.head ||
				    hw_sq_tail < sw_sq_head)
					db_wr32(qp->qp_id, qp->wqe_alloc_db);
			}
		}
	}

	qp->initial_ring.head = qp->sq_ring.head;
}

/**
 * irdma_qp_ring_push_db -  ring qp doorbell
 * @qp: hw qp ptr
 * @wqe_idx: wqe index
 */
static void
irdma_qp_ring_push_db(struct irdma_qp_uk *qp, u32 wqe_idx)
{
	set_32bit_val(qp->push_db, 0,
		      LS_32(wqe_idx >> 3, IRDMA_WQEALLOC_WQE_DESC_INDEX) | qp->qp_id);
	qp->initial_ring.head = qp->sq_ring.head;
	qp->push_mode = true;
	qp->push_dropped = false;
}

void
irdma_qp_push_wqe(struct irdma_qp_uk *qp, __le64 * wqe, u16 quanta,
		  u32 wqe_idx, bool post_sq)
{
	__le64 *push;

	if (IRDMA_RING_CURRENT_HEAD(qp->initial_ring) !=
	    IRDMA_RING_CURRENT_TAIL(qp->sq_ring) &&
	    !qp->push_mode) {
		if (post_sq)
			irdma_uk_qp_post_wr(qp);
	} else {
		push = (__le64 *) ((uintptr_t)qp->push_wqe +
				   (wqe_idx & 0x7) * 0x20);
		irdma_memcpy(push, wqe, quanta * IRDMA_QP_WQE_MIN_SIZE);
		irdma_qp_ring_push_db(qp, wqe_idx);
	}
}

/**
 * irdma_qp_get_next_send_wqe - pad with NOP if needed, return where next WR should go
 * @qp: hw qp ptr
 * @wqe_idx: return wqe index
 * @quanta: size of WR in quanta
 * @total_size: size of WR in bytes
 * @info: info on WR
 */
__le64 *
irdma_qp_get_next_send_wqe(struct irdma_qp_uk *qp, u32 *wqe_idx,
			   u16 quanta, u32 total_size,
			   struct irdma_post_sq_info *info)
{
	__le64 *wqe;
	__le64 *wqe_0 = NULL;
	u32 nop_wqe_idx;
	u16 avail_quanta;
	u16 i;

	avail_quanta = qp->uk_attrs->max_hw_sq_chunk -
	    (IRDMA_RING_CURRENT_HEAD(qp->sq_ring) %
	     qp->uk_attrs->max_hw_sq_chunk);
	if (quanta <= avail_quanta) {
		/* WR fits in current chunk */
		if (quanta > IRDMA_SQ_RING_FREE_QUANTA(qp->sq_ring))
			return NULL;
	} else {
		/* Need to pad with NOP */
		if (quanta + avail_quanta >
		    IRDMA_SQ_RING_FREE_QUANTA(qp->sq_ring))
			return NULL;

		nop_wqe_idx = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
		for (i = 0; i < avail_quanta; i++) {
			irdma_nop_1(qp);
			IRDMA_RING_MOVE_HEAD_NOCHECK(qp->sq_ring);
		}
		if (qp->push_db && info->push_wqe)
			irdma_qp_push_wqe(qp, qp->sq_base[nop_wqe_idx].elem,
					  avail_quanta, nop_wqe_idx, true);
	}

	*wqe_idx = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
	if (!*wqe_idx)
		qp->swqe_polarity = !qp->swqe_polarity;

	IRDMA_RING_MOVE_HEAD_BY_COUNT_NOCHECK(qp->sq_ring, quanta);

	wqe = qp->sq_base[*wqe_idx].elem;
	if (qp->uk_attrs->hw_rev == IRDMA_GEN_1 && quanta == 1 &&
	    (IRDMA_RING_CURRENT_HEAD(qp->sq_ring) & 1)) {
		wqe_0 = qp->sq_base[IRDMA_RING_CURRENT_HEAD(qp->sq_ring)].elem;
		wqe_0[3] = cpu_to_le64(LS_64(!qp->swqe_polarity, IRDMAQPSQ_VALID));
	}
	qp->sq_wrtrk_array[*wqe_idx].wrid = info->wr_id;
	qp->sq_wrtrk_array[*wqe_idx].wr_len = total_size;
	qp->sq_wrtrk_array[*wqe_idx].quanta = quanta;
	qp->sq_wrtrk_array[*wqe_idx].signaled = info->signaled;

	return wqe;
}

/**
 * irdma_qp_get_next_recv_wqe - get next qp's rcv wqe
 * @qp: hw qp ptr
 * @wqe_idx: return wqe index
 */
__le64 *
irdma_qp_get_next_recv_wqe(struct irdma_qp_uk *qp, u32 *wqe_idx)
{
	__le64 *wqe;
	int ret_code;

	if (IRDMA_RING_FULL_ERR(qp->rq_ring))
		return NULL;

	IRDMA_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 32 byte quanta in one rq wqe */
	wqe = qp->rq_base[*wqe_idx * qp->rq_wqe_size_multiplier].elem;

	return wqe;
}

/**
 * irdma_uk_rdma_write - rdma write operation
 * @qp: hw qp ptr
 * @info: post sq information
 * @post_sq: flag to post sq
 */
int
irdma_uk_rdma_write(struct irdma_qp_uk *qp, struct irdma_post_sq_info *info,
		    bool post_sq)
{
	u64 hdr;
	__le64 *wqe;
	struct irdma_rdma_write *op_info;
	u32 i, wqe_idx;
	u32 total_size = 0, byte_off;
	int ret_code;
	u32 frag_cnt, addl_frag_cnt;
	bool read_fence = false;
	u16 quanta;

	info->push_wqe = qp->push_db ? true : false;

	op_info = &info->op.rdma_write;
	if (op_info->num_lo_sges > qp->max_sq_frag_cnt)
		return -EINVAL;

	for (i = 0; i < op_info->num_lo_sges; i++)
		total_size += op_info->lo_sg_list[i].len;

	read_fence |= info->read_fence;

	if (info->imm_data_valid)
		frag_cnt = op_info->num_lo_sges + 1;
	else
		frag_cnt = op_info->num_lo_sges;
	addl_frag_cnt = frag_cnt > 1 ? (frag_cnt - 1) : 0;
	ret_code = irdma_fragcnt_to_quanta_sq(frag_cnt, &quanta);
	if (ret_code)
		return ret_code;

	wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, total_size,
					 info);
	if (!wqe)
		return -ENOSPC;

	irdma_clr_wqes(qp, wqe_idx);

	qp->sq_wrtrk_array[wqe_idx].signaled = info->signaled;
	set_64bit_val(wqe, IRDMA_BYTE_16,
		      LS_64(op_info->rem_addr.tag_off, IRDMAQPSQ_FRAG_TO));

	if (info->imm_data_valid) {
		set_64bit_val(wqe, IRDMA_BYTE_0,
			      LS_64(info->imm_data, IRDMAQPSQ_IMMDATA));
		i = 0;
	} else {
		qp->wqe_ops.iw_set_fragment(wqe, IRDMA_BYTE_0,
					    op_info->lo_sg_list,
					    qp->swqe_polarity);
		i = 1;
	}

	for (byte_off = IRDMA_BYTE_32; i < op_info->num_lo_sges; i++) {
		qp->wqe_ops.iw_set_fragment(wqe, byte_off,
					    &op_info->lo_sg_list[i],
					    qp->swqe_polarity);
		byte_off += 16;
	}

	/* if not an odd number set valid bit in next fragment */
	if (qp->uk_attrs->hw_rev >= IRDMA_GEN_2 && !(frag_cnt & 0x01) &&
	    frag_cnt) {
		qp->wqe_ops.iw_set_fragment(wqe, byte_off, NULL,
					    qp->swqe_polarity);
		if (qp->uk_attrs->hw_rev == IRDMA_GEN_2)
			++addl_frag_cnt;
	}

	if (!op_info->rem_addr.stag && !total_size)
		op_info->rem_addr.stag = 0x1234;
	hdr = LS_64(op_info->rem_addr.stag, IRDMAQPSQ_REMSTAG) |
	    LS_64(info->op_type, IRDMAQPSQ_OPCODE) |
	    LS_64((info->imm_data_valid ? 1 : 0), IRDMAQPSQ_IMMDATAFLAG) |
	    LS_64((info->report_rtt ? 1 : 0), IRDMAQPSQ_REPORTRTT) |
	    LS_64(addl_frag_cnt, IRDMAQPSQ_ADDFRAGCNT) |
	    LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
	    LS_64(read_fence, IRDMAQPSQ_READFENCE) |
	    LS_64(info->local_fence, IRDMAQPSQ_LOCALFENCE) |
	    LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);
	if (info->push_wqe) {
		irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
	} else {
		if (post_sq)
			irdma_uk_qp_post_wr(qp);
	}

	return 0;
}

/**
 * irdma_uk_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
 */
int
irdma_uk_rdma_read(struct irdma_qp_uk *qp, struct irdma_post_sq_info *info,
		   bool inv_stag, bool post_sq)
{
	struct irdma_rdma_read *op_info;
	int ret_code;
	u32 i, byte_off, total_size = 0;
	bool local_fence = false;
	bool ord_fence = false;
	u32 addl_frag_cnt;
	__le64 *wqe;
	u32 wqe_idx;
	u16 quanta;
	u64 hdr;

	info->push_wqe = qp->push_db ? true : false;

	op_info = &info->op.rdma_read;
	if (qp->max_sq_frag_cnt < op_info->num_lo_sges)
		return -EINVAL;

	for (i = 0; i < op_info->num_lo_sges; i++)
		total_size += op_info->lo_sg_list[i].len;

	ret_code = irdma_fragcnt_to_quanta_sq(op_info->num_lo_sges, &quanta);
	if (ret_code)
		return ret_code;

	wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, total_size,
					 info);
	if (!wqe)
		return -ENOSPC;

	if (qp->rd_fence_rate && (qp->ord_cnt++ == qp->rd_fence_rate)) {
		ord_fence = true;
		qp->ord_cnt = 0;
	}

	irdma_clr_wqes(qp, wqe_idx);

	qp->sq_wrtrk_array[wqe_idx].signaled = info->signaled;
	addl_frag_cnt = op_info->num_lo_sges > 1 ?
	    (op_info->num_lo_sges - 1) : 0;
	local_fence |= info->local_fence;

	qp->wqe_ops.iw_set_fragment(wqe, IRDMA_BYTE_0, op_info->lo_sg_list,
				    qp->swqe_polarity);
	for (i = 1, byte_off = IRDMA_BYTE_32; i < op_info->num_lo_sges; ++i) {
		qp->wqe_ops.iw_set_fragment(wqe, byte_off,
					    &op_info->lo_sg_list[i],
					    qp->swqe_polarity);
		byte_off += IRDMA_BYTE_16;
	}

	/* if not an odd number set valid bit in next fragment */
	if (qp->uk_attrs->hw_rev >= IRDMA_GEN_2 &&
	    !(op_info->num_lo_sges & 0x01) && op_info->num_lo_sges) {
		qp->wqe_ops.iw_set_fragment(wqe, byte_off, NULL,
					    qp->swqe_polarity);
		if (qp->uk_attrs->hw_rev == IRDMA_GEN_2)
			++addl_frag_cnt;
	}
	set_64bit_val(wqe, IRDMA_BYTE_16,
		      LS_64(op_info->rem_addr.tag_off, IRDMAQPSQ_FRAG_TO));
	hdr = LS_64(op_info->rem_addr.stag, IRDMAQPSQ_REMSTAG) |
	    LS_64((info->report_rtt ? 1 : 0), IRDMAQPSQ_REPORTRTT) |
	    LS_64(addl_frag_cnt, IRDMAQPSQ_ADDFRAGCNT) |
	    LS_64((inv_stag ? IRDMAQP_OP_RDMA_READ_LOC_INV : IRDMAQP_OP_RDMA_READ),
		  IRDMAQPSQ_OPCODE) |
	    LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
	    LS_64(info->read_fence || qp->force_fence || ord_fence ? 1 : 0,
		  IRDMAQPSQ_READFENCE) |
	    LS_64(local_fence, IRDMAQPSQ_LOCALFENCE) |
	    LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);
	if (info->push_wqe) {
		irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
	} else {
		if (post_sq)
			irdma_uk_qp_post_wr(qp);
	}

	return 0;
}

/**
 * irdma_uk_send - rdma send command
 * @qp: hw qp ptr
 * @info: post sq information
 * @post_sq: flag to post sq
 */
int
irdma_uk_send(struct irdma_qp_uk *qp, struct irdma_post_sq_info *info,
	      bool post_sq)
{
	__le64 *wqe;
	struct irdma_post_send *op_info;
	u64 hdr;
	u32 i, wqe_idx, total_size = 0, byte_off;
	int ret_code;
	u32 frag_cnt, addl_frag_cnt;
	bool read_fence = false;
	u16 quanta;

	info->push_wqe = qp->push_db ? true : false;

	op_info = &info->op.send;
	if (qp->max_sq_frag_cnt < op_info->num_sges)
		return -EINVAL;

	for (i = 0; i < op_info->num_sges; i++)
		total_size += op_info->sg_list[i].len;

	if (info->imm_data_valid)
		frag_cnt = op_info->num_sges + 1;
	else
		frag_cnt = op_info->num_sges;
	ret_code = irdma_fragcnt_to_quanta_sq(frag_cnt, &quanta);
	if (ret_code)
		return ret_code;

	wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, total_size,
					 info);
	if (!wqe)
		return -ENOSPC;

	irdma_clr_wqes(qp, wqe_idx);

	read_fence |= info->read_fence;
	addl_frag_cnt = frag_cnt > 1 ? (frag_cnt - 1) : 0;
	if (info->imm_data_valid) {
		set_64bit_val(wqe, IRDMA_BYTE_0,
			      LS_64(info->imm_data, IRDMAQPSQ_IMMDATA));
		i = 0;
	} else {
		qp->wqe_ops.iw_set_fragment(wqe, IRDMA_BYTE_0, op_info->sg_list,
					    qp->swqe_polarity);
		i = 1;
	}

	for (byte_off = IRDMA_BYTE_32; i < op_info->num_sges; i++) {
		qp->wqe_ops.iw_set_fragment(wqe, byte_off, &op_info->sg_list[i],
					    qp->swqe_polarity);
		byte_off += IRDMA_BYTE_16;
	}

	/* if not an odd number set valid bit in next fragment */
	if (qp->uk_attrs->hw_rev >= IRDMA_GEN_2 && !(frag_cnt & 0x01) &&
	    frag_cnt) {
		qp->wqe_ops.iw_set_fragment(wqe, byte_off, NULL,
					    qp->swqe_polarity);
		if (qp->uk_attrs->hw_rev == IRDMA_GEN_2)
			++addl_frag_cnt;
	}

	set_64bit_val(wqe, IRDMA_BYTE_16,
		      LS_64(op_info->qkey, IRDMAQPSQ_DESTQKEY) |
		      LS_64(op_info->dest_qp, IRDMAQPSQ_DESTQPN));
	hdr = LS_64(info->stag_to_inv, IRDMAQPSQ_REMSTAG) |
	    LS_64(op_info->ah_id, IRDMAQPSQ_AHID) |
	    LS_64((info->imm_data_valid ? 1 : 0), IRDMAQPSQ_IMMDATAFLAG) |
	    LS_64((info->report_rtt ? 1 : 0), IRDMAQPSQ_REPORTRTT) |
	    LS_64(info->op_type, IRDMAQPSQ_OPCODE) |
	    LS_64(addl_frag_cnt, IRDMAQPSQ_ADDFRAGCNT) |
	    LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
	    LS_64(read_fence, IRDMAQPSQ_READFENCE) |
	    LS_64(info->local_fence, IRDMAQPSQ_LOCALFENCE) |
	    LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(info->udp_hdr, IRDMAQPSQ_UDPHEADER) |
	    LS_64(info->l4len, IRDMAQPSQ_L4LEN) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);
	if (info->push_wqe) {
		irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
	} else {
		if (post_sq)
			irdma_uk_qp_post_wr(qp);
	}

	return 0;
}

/**
 * irdma_set_mw_bind_wqe_gen_1 - set mw bind wqe
 * @wqe: wqe for setting fragment
 * @op_info: info for setting bind wqe values
 */
static void
irdma_set_mw_bind_wqe_gen_1(__le64 * wqe,
			    struct irdma_bind_window *op_info)
{
	set_64bit_val(wqe, IRDMA_BYTE_0, (uintptr_t)op_info->va);
	set_64bit_val(wqe, IRDMA_BYTE_8,
		      LS_64(op_info->mw_stag, IRDMAQPSQ_PARENTMRSTAG) |
		      LS_64(op_info->mr_stag, IRDMAQPSQ_MWSTAG));
	set_64bit_val(wqe, IRDMA_BYTE_16, op_info->bind_len);
}

/**
 * irdma_copy_inline_data_gen_1 - Copy inline data to wqe
 * @dest: pointer to wqe
 * @src: pointer to inline data
 * @len: length of inline data to copy
 * @polarity: compatibility parameter
 */
static void
irdma_copy_inline_data_gen_1(u8 *dest, u8 *src, u32 len,
			     u8 polarity)
{
	if (len <= IRDMA_BYTE_16) {
		irdma_memcpy(dest, src, len);
	} else {
		irdma_memcpy(dest, src, IRDMA_BYTE_16);
		src += IRDMA_BYTE_16;
		dest = dest + IRDMA_BYTE_32;
		irdma_memcpy(dest, src, len - IRDMA_BYTE_16);
	}
}

/**
 * irdma_inline_data_size_to_quanta_gen_1 - based on inline data, quanta
 * @data_size: data size for inline
 *
 * Gets the quanta based on inline and immediate data.
 */
static inline u16 irdma_inline_data_size_to_quanta_gen_1(u32 data_size) {
	return data_size <= 16 ? IRDMA_QP_WQE_MIN_QUANTA : 2;
}

/**
 * irdma_set_mw_bind_wqe - set mw bind in wqe
 * @wqe: wqe for setting mw bind
 * @op_info: info for setting wqe values
 */
static void
irdma_set_mw_bind_wqe(__le64 * wqe,
		      struct irdma_bind_window *op_info)
{
	set_64bit_val(wqe, IRDMA_BYTE_0, (uintptr_t)op_info->va);
	set_64bit_val(wqe, IRDMA_BYTE_8,
		      LS_64(op_info->mr_stag, IRDMAQPSQ_PARENTMRSTAG) |
		      LS_64(op_info->mw_stag, IRDMAQPSQ_MWSTAG));
	set_64bit_val(wqe, IRDMA_BYTE_16, op_info->bind_len);
}

/**
 * irdma_copy_inline_data - Copy inline data to wqe
 * @dest: pointer to wqe
 * @src: pointer to inline data
 * @len: length of inline data to copy
 * @polarity: polarity of wqe valid bit
 */
static void
irdma_copy_inline_data(u8 *dest, u8 *src, u32 len, u8 polarity)
{
	u8 inline_valid = polarity << IRDMA_INLINE_VALID_S;
	u32 copy_size;

	dest += IRDMA_BYTE_8;
	if (len <= IRDMA_BYTE_8) {
		irdma_memcpy(dest, src, len);
		return;
	}

	*((u64 *)dest) = *((u64 *)src);
	len -= IRDMA_BYTE_8;
	src += IRDMA_BYTE_8;
	dest += IRDMA_BYTE_24;	/* point to additional 32 byte quanta */

	while (len) {
		copy_size = len < 31 ? len : 31;
		irdma_memcpy(dest, src, copy_size);
		*(dest + 31) = inline_valid;
		len -= copy_size;
		dest += IRDMA_BYTE_32;
		src += copy_size;
	}
}

/**
 * irdma_inline_data_size_to_quanta - based on inline data, quanta
 * @data_size: data size for inline
 *
 * Gets the quanta based on inline and immediate data.
 */
static u16 irdma_inline_data_size_to_quanta(u32 data_size) {
	if (data_size <= 8)
		return IRDMA_QP_WQE_MIN_QUANTA;
	else if (data_size <= 39)
		return 2;
	else if (data_size <= 70)
		return 3;
	else if (data_size <= 101)
		return 4;
	else if (data_size <= 132)
		return 5;
	else if (data_size <= 163)
		return 6;
	else if (data_size <= 194)
		return 7;
	else
		return 8;
}

/**
 * irdma_uk_inline_rdma_write - inline rdma write operation
 * @qp: hw qp ptr
 * @info: post sq information
 * @post_sq: flag to post sq
 */
int
irdma_uk_inline_rdma_write(struct irdma_qp_uk *qp,
			   struct irdma_post_sq_info *info, bool post_sq)
{
	__le64 *wqe;
	struct irdma_inline_rdma_write *op_info;
	u64 hdr = 0;
	u32 wqe_idx;
	bool read_fence = false;
	u16 quanta;

	info->push_wqe = qp->push_db ? true : false;
	op_info = &info->op.inline_rdma_write;

	if (op_info->len > qp->max_inline_data)
		return -EINVAL;

	quanta = qp->wqe_ops.iw_inline_data_size_to_quanta(op_info->len);
	wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, op_info->len,
					 info);
	if (!wqe)
		return -ENOSPC;

	irdma_clr_wqes(qp, wqe_idx);

	qp->sq_wrtrk_array[wqe_idx].signaled = info->signaled;
	read_fence |= info->read_fence;
	set_64bit_val(wqe, IRDMA_BYTE_16,
		      LS_64(op_info->rem_addr.tag_off, IRDMAQPSQ_FRAG_TO));

	hdr = LS_64(op_info->rem_addr.stag, IRDMAQPSQ_REMSTAG) |
	    LS_64(info->op_type, IRDMAQPSQ_OPCODE) |
	    LS_64(op_info->len, IRDMAQPSQ_INLINEDATALEN) |
	    LS_64(info->report_rtt ? 1 : 0, IRDMAQPSQ_REPORTRTT) |
	    LS_64(1, IRDMAQPSQ_INLINEDATAFLAG) |
	    LS_64(info->imm_data_valid ? 1 : 0, IRDMAQPSQ_IMMDATAFLAG) |
	    LS_64(info->push_wqe ? 1 : 0, IRDMAQPSQ_PUSHWQE) |
	    LS_64(read_fence, IRDMAQPSQ_READFENCE) |
	    LS_64(info->local_fence, IRDMAQPSQ_LOCALFENCE) |
	    LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	if (info->imm_data_valid)
		set_64bit_val(wqe, IRDMA_BYTE_0,
			      LS_64(info->imm_data, IRDMAQPSQ_IMMDATA));

	qp->wqe_ops.iw_copy_inline_data((u8 *)wqe, op_info->data, op_info->len,
					qp->swqe_polarity);
	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);

	if (info->push_wqe) {
		irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
	} else {
		if (post_sq)
			irdma_uk_qp_post_wr(qp);
	}

	return 0;
}

/**
 * irdma_uk_inline_send - inline send operation
 * @qp: hw qp ptr
 * @info: post sq information
 * @post_sq: flag to post sq
 */
int
irdma_uk_inline_send(struct irdma_qp_uk *qp,
		     struct irdma_post_sq_info *info, bool post_sq)
{
	__le64 *wqe;
	struct irdma_post_inline_send *op_info;
	u64 hdr;
	u32 wqe_idx;
	bool read_fence = false;
	u16 quanta;

	info->push_wqe = qp->push_db ? true : false;
	op_info = &info->op.inline_send;

	if (op_info->len > qp->max_inline_data)
		return -EINVAL;

	quanta = qp->wqe_ops.iw_inline_data_size_to_quanta(op_info->len);
	wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, op_info->len,
					 info);
	if (!wqe)
		return -ENOSPC;

	irdma_clr_wqes(qp, wqe_idx);

	set_64bit_val(wqe, IRDMA_BYTE_16,
		      LS_64(op_info->qkey, IRDMAQPSQ_DESTQKEY) |
		      LS_64(op_info->dest_qp, IRDMAQPSQ_DESTQPN));

	read_fence |= info->read_fence;
	hdr = LS_64(info->stag_to_inv, IRDMAQPSQ_REMSTAG) |
	    LS_64(op_info->ah_id, IRDMAQPSQ_AHID) |
	    LS_64(info->op_type, IRDMAQPSQ_OPCODE) |
	    LS_64(op_info->len, IRDMAQPSQ_INLINEDATALEN) |
	    LS_64((info->imm_data_valid ? 1 : 0), IRDMAQPSQ_IMMDATAFLAG) |
	    LS_64((info->report_rtt ? 1 : 0), IRDMAQPSQ_REPORTRTT) |
	    LS_64(1, IRDMAQPSQ_INLINEDATAFLAG) |
	    LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
	    LS_64(read_fence, IRDMAQPSQ_READFENCE) |
	    LS_64(info->local_fence, IRDMAQPSQ_LOCALFENCE) |
	    LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(info->udp_hdr, IRDMAQPSQ_UDPHEADER) |
	    LS_64(info->l4len, IRDMAQPSQ_L4LEN) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	if (info->imm_data_valid)
		set_64bit_val(wqe, IRDMA_BYTE_0,
			      LS_64(info->imm_data, IRDMAQPSQ_IMMDATA));
	qp->wqe_ops.iw_copy_inline_data((u8 *)wqe, op_info->data, op_info->len,
					qp->swqe_polarity);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);

	if (info->push_wqe) {
		irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
	} else {
		if (post_sq)
			irdma_uk_qp_post_wr(qp);
	}

	return 0;
}

/**
 * irdma_uk_stag_local_invalidate - stag invalidate operation
 * @qp: hw qp ptr
 * @info: post sq information
 * @post_sq: flag to post sq
 */
int
irdma_uk_stag_local_invalidate(struct irdma_qp_uk *qp,
			       struct irdma_post_sq_info *info,
			       bool post_sq)
{
	__le64 *wqe;
	struct irdma_inv_local_stag *op_info;
	u64 hdr;
	u32 wqe_idx;
	bool local_fence = false;
	struct irdma_sge sge = {0};

	info->push_wqe = qp->push_db ? true : false;
	op_info = &info->op.inv_local_stag;
	local_fence = info->local_fence;

	wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, IRDMA_QP_WQE_MIN_QUANTA,
					 0, info);
	if (!wqe)
		return -ENOSPC;

	irdma_clr_wqes(qp, wqe_idx);

	sge.stag = op_info->target_stag;
	qp->wqe_ops.iw_set_fragment(wqe, IRDMA_BYTE_0, &sge, 0);

	set_64bit_val(wqe, IRDMA_BYTE_16, 0);

	hdr = LS_64(IRDMA_OP_TYPE_INV_STAG, IRDMAQPSQ_OPCODE) |
	    LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
	    LS_64(info->read_fence, IRDMAQPSQ_READFENCE) |
	    LS_64(local_fence, IRDMAQPSQ_LOCALFENCE) |
	    LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);

	if (info->push_wqe) {
		irdma_qp_push_wqe(qp, wqe, IRDMA_QP_WQE_MIN_QUANTA, wqe_idx,
				  post_sq);
	} else {
		if (post_sq)
			irdma_uk_qp_post_wr(qp);
	}

	return 0;
}

/**
 * irdma_uk_mw_bind - bind Memory Window
 * @qp: hw qp ptr
 * @info: post sq information
 * @post_sq: flag to post sq
 */
int
irdma_uk_mw_bind(struct irdma_qp_uk *qp, struct irdma_post_sq_info *info,
		 bool post_sq)
{
	__le64 *wqe;
	struct irdma_bind_window *op_info;
	u64 hdr;
	u32 wqe_idx;
	bool local_fence;

	info->push_wqe = qp->push_db ? true : false;
	op_info = &info->op.bind_window;
	local_fence = info->local_fence;

	wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, IRDMA_QP_WQE_MIN_QUANTA,
					 0, info);
	if (!wqe)
		return -ENOSPC;

	irdma_clr_wqes(qp, wqe_idx);

	qp->wqe_ops.iw_set_mw_bind_wqe(wqe, op_info);

	hdr = LS_64(IRDMA_OP_TYPE_BIND_MW, IRDMAQPSQ_OPCODE) |
	    LS_64(((op_info->ena_reads << 2) | (op_info->ena_writes << 3)),
		  IRDMAQPSQ_STAGRIGHTS) |
	    LS_64((op_info->addressing_type == IRDMA_ADDR_TYPE_VA_BASED ? 1 : 0),
		  IRDMAQPSQ_VABASEDTO) |
	    LS_64((op_info->mem_window_type_1 ? 1 : 0),
		  IRDMAQPSQ_MEMWINDOWTYPE) |
	    LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
	    LS_64(info->read_fence, IRDMAQPSQ_READFENCE) |
	    LS_64(local_fence, IRDMAQPSQ_LOCALFENCE) |
	    LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);

	if (info->push_wqe) {
		irdma_qp_push_wqe(qp, wqe, IRDMA_QP_WQE_MIN_QUANTA, wqe_idx,
				  post_sq);
	} else {
		if (post_sq)
			irdma_uk_qp_post_wr(qp);
	}

	return 0;
}

/**
 * irdma_uk_post_receive - post receive wqe
 * @qp: hw qp ptr
 * @info: post rq information
 */
int
irdma_uk_post_receive(struct irdma_qp_uk *qp,
		      struct irdma_post_rq_info *info)
{
	u32 wqe_idx, i, byte_off;
	u32 addl_frag_cnt;
	__le64 *wqe;
	u64 hdr;

	if (qp->max_rq_frag_cnt < info->num_sges)
		return -EINVAL;

	wqe = irdma_qp_get_next_recv_wqe(qp, &wqe_idx);
	if (!wqe)
		return -ENOSPC;

	qp->rq_wrid_array[wqe_idx] = info->wr_id;
	addl_frag_cnt = info->num_sges > 1 ? (info->num_sges - 1) : 0;
	qp->wqe_ops.iw_set_fragment(wqe, IRDMA_BYTE_0, info->sg_list,
				    qp->rwqe_polarity);

	for (i = 1, byte_off = IRDMA_BYTE_32; i < info->num_sges; i++) {
		qp->wqe_ops.iw_set_fragment(wqe, byte_off, &info->sg_list[i],
					    qp->rwqe_polarity);
		byte_off += 16;
	}

	/* if not an odd number set valid bit in next fragment */
	if (qp->uk_attrs->hw_rev >= IRDMA_GEN_2 && !(info->num_sges & 0x01) &&
	    info->num_sges) {
		qp->wqe_ops.iw_set_fragment(wqe, byte_off, NULL,
					    qp->rwqe_polarity);
		if (qp->uk_attrs->hw_rev == IRDMA_GEN_2)
			++addl_frag_cnt;
	}

	set_64bit_val(wqe, IRDMA_BYTE_16, 0);
	hdr = LS_64(addl_frag_cnt, IRDMAQPSQ_ADDFRAGCNT) |
	    LS_64(qp->rwqe_polarity, IRDMAQPSQ_VALID);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);

	return 0;
}

/**
 * irdma_uk_cq_resize - reset the cq buffer info
 * @cq: cq to resize
 * @cq_base: new cq buffer addr
 * @cq_size: number of cqes
 */
void
irdma_uk_cq_resize(struct irdma_cq_uk *cq, void *cq_base, int cq_size)
{
	cq->cq_base = cq_base;
	cq->cq_size = cq_size;
	IRDMA_RING_INIT(cq->cq_ring, cq->cq_size);
	cq->polarity = 1;
}

/**
 * irdma_uk_cq_set_resized_cnt - record the count of the resized buffers
 * @cq: cq to resize
 * @cq_cnt: the count of the resized cq buffers
 */
void
irdma_uk_cq_set_resized_cnt(struct irdma_cq_uk *cq, u16 cq_cnt)
{
	u64 temp_val;
	u16 sw_cq_sel;
	u8 arm_next_se;
	u8 arm_next;
	u8 arm_seq_num;

	get_64bit_val(cq->shadow_area, 32, &temp_val);

	sw_cq_sel = (u16)RS_64(temp_val, IRDMA_CQ_DBSA_SW_CQ_SELECT);
	sw_cq_sel += cq_cnt;

	arm_seq_num = (u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_SEQ_NUM);
	arm_next_se = (u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_NEXT_SE);
	arm_next = (u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_NEXT);

	temp_val = LS_64(arm_seq_num, IRDMA_CQ_DBSA_ARM_SEQ_NUM) |
	    LS_64(sw_cq_sel, IRDMA_CQ_DBSA_SW_CQ_SELECT) |
	    LS_64(arm_next_se, IRDMA_CQ_DBSA_ARM_NEXT_SE) |
	    LS_64(arm_next, IRDMA_CQ_DBSA_ARM_NEXT);

	set_64bit_val(cq->shadow_area, 32, temp_val);
}

/**
 * irdma_uk_cq_request_notification - cq notification request (door bell)
 * @cq: hw cq
 * @cq_notify: notification type
 */
void
irdma_uk_cq_request_notification(struct irdma_cq_uk *cq,
				 enum irdma_cmpl_notify cq_notify)
{
	u64 temp_val;
	u16 sw_cq_sel;
	u8 arm_next_se = 0;
	u8 arm_next = 0;
	u8 arm_seq_num;

	cq->armed = true;
	get_64bit_val(cq->shadow_area, IRDMA_BYTE_32, &temp_val);
	arm_seq_num = (u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_SEQ_NUM);
	arm_seq_num++;
	sw_cq_sel = (u16)RS_64(temp_val, IRDMA_CQ_DBSA_SW_CQ_SELECT);
	arm_next_se = (u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_NEXT_SE);
	arm_next_se |= 1;
	if (cq_notify == IRDMA_CQ_COMPL_EVENT)
		arm_next = 1;
	temp_val = LS_64(arm_seq_num, IRDMA_CQ_DBSA_ARM_SEQ_NUM) |
	    LS_64(sw_cq_sel, IRDMA_CQ_DBSA_SW_CQ_SELECT) |
	    LS_64(arm_next_se, IRDMA_CQ_DBSA_ARM_NEXT_SE) |
	    LS_64(arm_next, IRDMA_CQ_DBSA_ARM_NEXT);

	set_64bit_val(cq->shadow_area, IRDMA_BYTE_32, temp_val);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	db_wr32(cq->cq_id, cq->cqe_alloc_db);
}

static int
irdma_check_rq_cqe(struct irdma_qp_uk *qp, u32 *array_idx)
{
	u32 exp_idx = (qp->last_rx_cmpl_idx + 1) % qp->rq_size;

	if (*array_idx != exp_idx) {

		*array_idx = exp_idx;
		qp->last_rx_cmpl_idx = exp_idx;

		return -1;
	}

	qp->last_rx_cmpl_idx = *array_idx;

	return 0;
}

/**
 * irdma_skip_duplicate_flush_cmpl - check last cmpl and update wqe if needed
 *
 * @ring: sq/rq ring
 * @flush_seen: information if flush for specific ring was already seen
 * @comp_status: completion status
 * @wqe_idx: new value of WQE index returned if there is more work on ring
 */
static inline int
irdma_skip_duplicate_flush_cmpl(struct irdma_ring ring, u8 flush_seen,
				enum irdma_cmpl_status comp_status,
				u32 *wqe_idx)
{
	if (flush_seen) {
		if (IRDMA_RING_MORE_WORK(ring))
			*wqe_idx = ring.tail;
		else
			return -ENOENT;
	}

	return 0;
}

/**
 * irdma_uk_cq_poll_cmpl - get cq completion info
 * @cq: hw cq
 * @info: cq poll information returned
 */
int
irdma_uk_cq_poll_cmpl(struct irdma_cq_uk *cq,
		      struct irdma_cq_poll_info *info)
{
	u64 comp_ctx, qword0, qword2, qword3;
	__le64 *cqe;
	struct irdma_qp_uk *qp;
	struct irdma_ring *pring = NULL;
	u32 wqe_idx, q_type;
	int ret_code;
	bool move_cq_head = true;
	u8 polarity;
	bool ext_valid;
	__le64 *ext_cqe;

	if (cq->avoid_mem_cflct)
		cqe = IRDMA_GET_CURRENT_EXTENDED_CQ_ELEM(cq);
	else
		cqe = IRDMA_GET_CURRENT_CQ_ELEM(cq);

	get_64bit_val(cqe, IRDMA_BYTE_24, &qword3);
	polarity = (u8)RS_64(qword3, IRDMA_CQ_VALID);
	if (polarity != cq->polarity)
		return -ENOENT;

	/* Ensure CQE contents are read after valid bit is checked */
	rmb();

	ext_valid = (bool)RS_64(qword3, IRDMA_CQ_EXTCQE);
	if (ext_valid) {
		u64 qword6, qword7;
		u32 peek_head;

		if (cq->avoid_mem_cflct) {
			ext_cqe = (__le64 *) ((u8 *)cqe + 32);
			get_64bit_val(ext_cqe, IRDMA_BYTE_24, &qword7);
			polarity = (u8)RS_64(qword7, IRDMA_CQ_VALID);
		} else {
			peek_head = (cq->cq_ring.head + 1) % cq->cq_ring.size;
			ext_cqe = cq->cq_base[peek_head].buf;
			get_64bit_val(ext_cqe, IRDMA_BYTE_24, &qword7);
			polarity = (u8)RS_64(qword7, IRDMA_CQ_VALID);
			if (!peek_head)
				polarity ^= 1;
		}
		if (polarity != cq->polarity)
			return -ENOENT;

		/* Ensure ext CQE contents are read after ext valid bit is checked */
		rmb();

		info->imm_valid = (bool)RS_64(qword7, IRDMA_CQ_IMMVALID);
		if (info->imm_valid) {
			u64 qword4;

			get_64bit_val(ext_cqe, IRDMA_BYTE_0, &qword4);
			info->imm_data = (u32)RS_64(qword4, IRDMA_CQ_IMMDATALOW32);
		}
		info->ud_smac_valid = (bool)RS_64(qword7, IRDMA_CQ_UDSMACVALID);
		info->ud_vlan_valid = (bool)RS_64(qword7, IRDMA_CQ_UDVLANVALID);
		if (info->ud_smac_valid || info->ud_vlan_valid) {
			get_64bit_val(ext_cqe, IRDMA_BYTE_16, &qword6);
			if (info->ud_vlan_valid)
				info->ud_vlan = (u16)RS_64(qword6, IRDMA_CQ_UDVLAN);
			if (info->ud_smac_valid) {
				info->ud_smac[5] = qword6 & 0xFF;
				info->ud_smac[4] = (qword6 >> 8) & 0xFF;
				info->ud_smac[3] = (qword6 >> 16) & 0xFF;
				info->ud_smac[2] = (qword6 >> 24) & 0xFF;
				info->ud_smac[1] = (qword6 >> 32) & 0xFF;
				info->ud_smac[0] = (qword6 >> 40) & 0xFF;
			}
		}
	} else {
		info->imm_valid = false;
		info->ud_smac_valid = false;
		info->ud_vlan_valid = false;
	}

	q_type = (u8)RS_64(qword3, IRDMA_CQ_SQ);
	info->error = (bool)RS_64(qword3, IRDMA_CQ_ERROR);
	info->push_dropped = (bool)RS_64(qword3, IRDMACQ_PSHDROP);
	info->ipv4 = (bool)RS_64(qword3, IRDMACQ_IPV4);
	if (info->error) {
		info->major_err = RS_64(qword3, IRDMA_CQ_MAJERR);
		info->minor_err = RS_64(qword3, IRDMA_CQ_MINERR);
		if (info->major_err == IRDMA_FLUSH_MAJOR_ERR) {
			info->comp_status = IRDMA_COMPL_STATUS_FLUSHED;
			/* Set the min error to standard flush error code for remaining cqes */
			if (info->minor_err != FLUSH_GENERAL_ERR) {
				qword3 &= ~IRDMA_CQ_MINERR_M;
				qword3 |= LS_64(FLUSH_GENERAL_ERR, IRDMA_CQ_MINERR);
				set_64bit_val(cqe, IRDMA_BYTE_24, qword3);
			}
		} else {
			info->comp_status = IRDMA_COMPL_STATUS_UNKNOWN;
		}
	} else {
		info->comp_status = IRDMA_COMPL_STATUS_SUCCESS;
	}

	get_64bit_val(cqe, IRDMA_BYTE_0, &qword0);
	get_64bit_val(cqe, IRDMA_BYTE_16, &qword2);

	info->tcp_seq_num_rtt = (u32)RS_64(qword0, IRDMACQ_TCPSEQNUMRTT);
	info->qp_id = (u32)RS_64(qword2, IRDMACQ_QPID);
	info->ud_src_qpn = (u32)RS_64(qword2, IRDMACQ_UDSRCQPN);

	get_64bit_val(cqe, IRDMA_BYTE_8, &comp_ctx);

	info->solicited_event = (bool)RS_64(qword3, IRDMACQ_SOEVENT);
	qp = (struct irdma_qp_uk *)(irdma_uintptr) comp_ctx;
	if (!qp || qp->destroy_pending) {
		ret_code = -EFAULT;
		goto exit;
	}
	wqe_idx = (u32)RS_64(qword3, IRDMA_CQ_WQEIDX);
	info->qp_handle = (irdma_qp_handle) (irdma_uintptr) qp;

	if (q_type == IRDMA_CQE_QTYPE_RQ) {
		u32 array_idx;

		ret_code = irdma_skip_duplicate_flush_cmpl(qp->rq_ring,
							   qp->rq_flush_seen,
							   info->comp_status,
							   &wqe_idx);
		if (ret_code != 0)
			goto exit;

		array_idx = wqe_idx / qp->rq_wqe_size_multiplier;

		if (info->comp_status == IRDMA_COMPL_STATUS_FLUSHED ||
		    info->comp_status == IRDMA_COMPL_STATUS_UNKNOWN) {
			if (!IRDMA_RING_MORE_WORK(qp->rq_ring)) {
				ret_code = -ENOENT;
				goto exit;
			}

			info->wr_id = qp->rq_wrid_array[qp->rq_ring.tail];
			info->signaled = 1;
			array_idx = qp->rq_ring.tail;
		} else {
			info->wr_id = qp->rq_wrid_array[array_idx];
			info->signaled = 1;
			if (irdma_check_rq_cqe(qp, &array_idx)) {
				info->wr_id = qp->rq_wrid_array[array_idx];
				info->comp_status = IRDMA_COMPL_STATUS_UNKNOWN;
				IRDMA_RING_SET_TAIL(qp->rq_ring, array_idx + 1);
				return 0;
			}
		}

		info->bytes_xfered = (u32)RS_64(qword0, IRDMACQ_PAYLDLEN);

		if (info->imm_valid)
			info->op_type = IRDMA_OP_TYPE_REC_IMM;
		else
			info->op_type = IRDMA_OP_TYPE_REC;

		if (qword3 & IRDMACQ_STAG_M) {
			info->stag_invalid_set = true;
			info->inv_stag = (u32)RS_64(qword2, IRDMACQ_INVSTAG);
		} else {
			info->stag_invalid_set = false;
		}
		IRDMA_RING_SET_TAIL(qp->rq_ring, array_idx + 1);
		if (info->comp_status == IRDMA_COMPL_STATUS_FLUSHED) {
			qp->rq_flush_seen = true;
			if (!IRDMA_RING_MORE_WORK(qp->rq_ring))
				qp->rq_flush_complete = true;
			else
				move_cq_head = false;
		}
		pring = &qp->rq_ring;
	} else {		/* q_type is IRDMA_CQE_QTYPE_SQ */
		if (qp->first_sq_wq) {
			if (wqe_idx + 1 >= qp->conn_wqes)
				qp->first_sq_wq = false;

			if (wqe_idx < qp->conn_wqes && qp->sq_ring.head == qp->sq_ring.tail) {
				IRDMA_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
				IRDMA_RING_MOVE_TAIL(cq->cq_ring);
				set_64bit_val(cq->shadow_area, IRDMA_BYTE_0,
					      IRDMA_RING_CURRENT_HEAD(cq->cq_ring));
				memset(info, 0,
				       sizeof(struct irdma_cq_poll_info));
				return irdma_uk_cq_poll_cmpl(cq, info);
			}
		}
		/* cease posting push mode on push drop */
		if (info->push_dropped) {
			qp->push_mode = false;
			qp->push_dropped = true;
		}
		ret_code = irdma_skip_duplicate_flush_cmpl(qp->sq_ring,
							   qp->sq_flush_seen,
							   info->comp_status,
							   &wqe_idx);
		if (ret_code != 0)
			goto exit;
		if (info->comp_status != IRDMA_COMPL_STATUS_FLUSHED) {
			info->wr_id = qp->sq_wrtrk_array[wqe_idx].wrid;
			info->signaled = qp->sq_wrtrk_array[wqe_idx].signaled;
			if (!info->comp_status)
				info->bytes_xfered = qp->sq_wrtrk_array[wqe_idx].wr_len;
			info->op_type = (u8)RS_64(qword3, IRDMACQ_OP);
			IRDMA_RING_SET_TAIL(qp->sq_ring,
					    wqe_idx + qp->sq_wrtrk_array[wqe_idx].quanta);
		} else {
			if (!IRDMA_RING_MORE_WORK(qp->sq_ring)) {
				ret_code = -ENOENT;
				goto exit;
			}

			do {
				__le64 *sw_wqe;
				u64 wqe_qword;
				u8 op_type;
				u32 tail;

				tail = qp->sq_ring.tail;
				sw_wqe = qp->sq_base[tail].elem;
				get_64bit_val(sw_wqe, IRDMA_BYTE_24,
					      &wqe_qword);
				op_type = (u8)RS_64(wqe_qword, IRDMAQPSQ_OPCODE);
				info->op_type = op_type;
				IRDMA_RING_SET_TAIL(qp->sq_ring,
						    tail + qp->sq_wrtrk_array[tail].quanta);
				if (op_type != IRDMAQP_OP_NOP) {
					info->wr_id = qp->sq_wrtrk_array[tail].wrid;
					info->signaled = qp->sq_wrtrk_array[tail].signaled;
					info->bytes_xfered = qp->sq_wrtrk_array[tail].wr_len;
					break;
				}
			} while (1);
			qp->sq_flush_seen = true;
			if (!IRDMA_RING_MORE_WORK(qp->sq_ring))
				qp->sq_flush_complete = true;
		}
		pring = &qp->sq_ring;
	}

	ret_code = 0;

exit:
	if (!ret_code && info->comp_status == IRDMA_COMPL_STATUS_FLUSHED)
		if (pring && IRDMA_RING_MORE_WORK(*pring))
			move_cq_head = false;

	if (move_cq_head) {
		IRDMA_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
		if (!IRDMA_RING_CURRENT_HEAD(cq->cq_ring))
			cq->polarity ^= 1;

		if (ext_valid && !cq->avoid_mem_cflct) {
			IRDMA_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
			if (!IRDMA_RING_CURRENT_HEAD(cq->cq_ring))
				cq->polarity ^= 1;
		}

		IRDMA_RING_MOVE_TAIL(cq->cq_ring);
		if (!cq->avoid_mem_cflct && ext_valid)
			IRDMA_RING_MOVE_TAIL(cq->cq_ring);
		set_64bit_val(cq->shadow_area, IRDMA_BYTE_0,
			      IRDMA_RING_CURRENT_HEAD(cq->cq_ring));
	} else {
		qword3 &= ~IRDMA_CQ_WQEIDX_M;
		qword3 |= LS_64(pring->tail, IRDMA_CQ_WQEIDX);
		set_64bit_val(cqe, IRDMA_BYTE_24, qword3);
	}

	return ret_code;
}

/**
 * irdma_qp_round_up - return round up qp wq depth
 * @wqdepth: wq depth in quanta to round up
 */
static int
irdma_qp_round_up(u32 wqdepth)
{
	int scount = 1;

	for (wqdepth--; scount <= 16; scount *= 2)
		wqdepth |= wqdepth >> scount;

	return ++wqdepth;
}

/**
 * irdma_get_wqe_shift - get shift count for maximum wqe size
 * @uk_attrs: qp HW attributes
 * @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 <= 8, shift = 0 (wqe size of 32
 * bytes). For 2 or 3 SGEs or inline data <= 39, shift = 1 (wqe
 * size of 64 bytes).
 * For 4-7 SGE's and inline <= 101 Shift of 2 otherwise (wqe
 * size of 256 bytes).
 */
void
irdma_get_wqe_shift(struct irdma_uk_attrs *uk_attrs, u32 sge,
		    u32 inline_data, u8 *shift)
{
	*shift = 0;
	if (uk_attrs->hw_rev >= IRDMA_GEN_2) {
		if (sge > 1 || inline_data > 8) {
			if (sge < 4 && inline_data <= 39)
				*shift = 1;
			else if (sge < 8 && inline_data <= 101)
				*shift = 2;
			else
				*shift = 3;
		}
	} else if (sge > 1 || inline_data > 16) {
		*shift = (sge < 4 && inline_data <= 48) ? 1 : 2;
	}
}

/*
 * irdma_get_sqdepth - get SQ depth (quanta) @max_hw_wq_quanta: HW SQ size limit @sq_size: SQ size @shift: shift which
 * determines size of WQE @sqdepth: depth of SQ
 */
int
irdma_get_sqdepth(u32 max_hw_wq_quanta, u32 sq_size, u8 shift, u32 *sqdepth)
{
	*sqdepth = irdma_qp_round_up((sq_size << shift) + IRDMA_SQ_RSVD);

	if (*sqdepth < (IRDMA_QP_SW_MIN_WQSIZE << shift))
		*sqdepth = IRDMA_QP_SW_MIN_WQSIZE << shift;
	else if (*sqdepth > max_hw_wq_quanta)
		return -EINVAL;

	return 0;
}

/*
 * irdma_get_rqdepth - get RQ/SRQ depth (quanta) @max_hw_rq_quanta: HW RQ/SRQ size limit @rq_size: RQ/SRQ size @shift:
 * shift which determines size of WQE @rqdepth: depth of RQ/SRQ
 */
int
irdma_get_rqdepth(u32 max_hw_rq_quanta, u32 rq_size, u8 shift, u32 *rqdepth)
{
	*rqdepth = irdma_qp_round_up((rq_size << shift) + IRDMA_RQ_RSVD);

	if (*rqdepth < (IRDMA_QP_SW_MIN_WQSIZE << shift))
		*rqdepth = IRDMA_QP_SW_MIN_WQSIZE << shift;
	else if (*rqdepth > max_hw_rq_quanta)
		return -EINVAL;

	return 0;
}

static const struct irdma_wqe_uk_ops iw_wqe_uk_ops = {
	.iw_copy_inline_data = irdma_copy_inline_data,
	.iw_inline_data_size_to_quanta = irdma_inline_data_size_to_quanta,
	.iw_set_fragment = irdma_set_fragment,
	.iw_set_mw_bind_wqe = irdma_set_mw_bind_wqe,
};

static const struct irdma_wqe_uk_ops iw_wqe_uk_ops_gen_1 = {
	.iw_copy_inline_data = irdma_copy_inline_data_gen_1,
	.iw_inline_data_size_to_quanta = irdma_inline_data_size_to_quanta_gen_1,
	.iw_set_fragment = irdma_set_fragment_gen_1,
	.iw_set_mw_bind_wqe = irdma_set_mw_bind_wqe_gen_1,
};

/**
 * irdma_setup_connection_wqes - setup WQEs necessary to complete
 * connection.
 * @qp: hw qp (user and kernel)
 * @info: qp initialization info
 */
static void
irdma_setup_connection_wqes(struct irdma_qp_uk *qp,
			    struct irdma_qp_uk_init_info *info)
{
	u16 move_cnt = 1;

	if (qp->uk_attrs->feature_flags & IRDMA_FEATURE_RTS_AE)
		move_cnt = 3;

	qp->conn_wqes = move_cnt;
	IRDMA_RING_MOVE_HEAD_BY_COUNT_NOCHECK(qp->sq_ring, move_cnt);
	IRDMA_RING_MOVE_TAIL_BY_COUNT(qp->sq_ring, move_cnt);
	IRDMA_RING_MOVE_HEAD_BY_COUNT_NOCHECK(qp->initial_ring, move_cnt);
}

/**
 * irdma_uk_qp_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.
 */
int
irdma_uk_qp_init(struct irdma_qp_uk *qp, struct irdma_qp_uk_init_info *info)
{
	int ret_code = 0;
	u32 sq_ring_size;
	u8 sqshift, rqshift;

	qp->uk_attrs = info->uk_attrs;
	if (info->max_sq_frag_cnt > qp->uk_attrs->max_hw_wq_frags ||
	    info->max_rq_frag_cnt > qp->uk_attrs->max_hw_wq_frags)
		return -EINVAL;

	irdma_get_wqe_shift(qp->uk_attrs, info->max_rq_frag_cnt, 0, &rqshift);
	if (qp->uk_attrs->hw_rev == IRDMA_GEN_1) {
		irdma_get_wqe_shift(qp->uk_attrs, info->max_sq_frag_cnt,
				    info->max_inline_data, &sqshift);
		if (info->abi_ver > 4)
			rqshift = IRDMA_MAX_RQ_WQE_SHIFT_GEN1;
	} else {
		irdma_get_wqe_shift(qp->uk_attrs, info->max_sq_frag_cnt + 1,
				    info->max_inline_data, &sqshift);
	}
	qp->qp_caps = info->qp_caps;
	qp->sq_base = info->sq;
	qp->rq_base = info->rq;
	qp->qp_type = info->type ? info->type : IRDMA_QP_TYPE_IWARP;
	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_db = info->wqe_alloc_db;
	qp->last_rx_cmpl_idx = 0xffffffff;
	qp->rd_fence_rate = info->rd_fence_rate;
	qp->qp_id = info->qp_id;
	qp->sq_size = info->sq_size;
	qp->push_mode = false;
	qp->max_sq_frag_cnt = info->max_sq_frag_cnt;
	sq_ring_size = qp->sq_size << sqshift;
	IRDMA_RING_INIT(qp->sq_ring, sq_ring_size);
	IRDMA_RING_INIT(qp->initial_ring, sq_ring_size);
	if (info->first_sq_wq) {
		irdma_setup_connection_wqes(qp, info);
		qp->swqe_polarity = 1;
		qp->first_sq_wq = true;
	} else {
		qp->swqe_polarity = 0;
	}
	qp->swqe_polarity_deferred = 1;
	qp->rwqe_polarity = 0;
	qp->rq_size = info->rq_size;
	qp->max_rq_frag_cnt = info->max_rq_frag_cnt;
	qp->max_inline_data = info->max_inline_data;
	qp->rq_wqe_size = rqshift;
	IRDMA_RING_INIT(qp->rq_ring, qp->rq_size);
	qp->rq_wqe_size_multiplier = 1 << rqshift;
	if (qp->uk_attrs->hw_rev == IRDMA_GEN_1)
		qp->wqe_ops = iw_wqe_uk_ops_gen_1;
	else
		qp->wqe_ops = iw_wqe_uk_ops;
	return ret_code;
}

/**
 * irdma_uk_cq_init - initialize shared cq (user and kernel)
 * @cq: hw cq
 * @info: hw cq initialization info
 */
int
irdma_uk_cq_init(struct irdma_cq_uk *cq, struct irdma_cq_uk_init_info *info)
{
	cq->cq_base = info->cq_base;
	cq->cq_id = info->cq_id;
	cq->cq_size = info->cq_size;
	cq->cqe_alloc_db = info->cqe_alloc_db;
	cq->cq_ack_db = info->cq_ack_db;
	cq->shadow_area = info->shadow_area;
	cq->avoid_mem_cflct = info->avoid_mem_cflct;
	IRDMA_RING_INIT(cq->cq_ring, cq->cq_size);
	cq->polarity = 1;

	return 0;
}

/**
 * irdma_uk_clean_cq - clean cq entries
 * @q: completion context
 * @cq: cq to clean
 */
int
irdma_uk_clean_cq(void *q, struct irdma_cq_uk *cq)
{
	__le64 *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 = ((struct irdma_extended_cqe *)(cq->cq_base))[cq_head].buf;
		else
			cqe = cq->cq_base[cq_head].buf;
		get_64bit_val(cqe, IRDMA_BYTE_24, &qword3);
		polarity = (u8)RS_64(qword3, IRDMA_CQ_VALID);

		if (polarity != temp)
			break;

		get_64bit_val(cqe, IRDMA_BYTE_8, &comp_ctx);
		if ((void *)(irdma_uintptr) comp_ctx == q)
			set_64bit_val(cqe, IRDMA_BYTE_8, 0);

		cq_head = (cq_head + 1) % cq->cq_ring.size;
		if (!cq_head)
			temp ^= 1;
	} while (true);
	return 0;
}

/**
 * irdma_nop - post a nop
 * @qp: hw qp ptr
 * @wr_id: work request id
 * @signaled: signaled for completion
 * @post_sq: ring doorbell
 */
int
irdma_nop(struct irdma_qp_uk *qp, u64 wr_id, bool signaled, bool post_sq)
{
	__le64 *wqe;
	u64 hdr;
	u32 wqe_idx;
	struct irdma_post_sq_info info = {0};

	info.push_wqe = false;
	info.wr_id = wr_id;
	wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, IRDMA_QP_WQE_MIN_QUANTA,
					 0, &info);
	if (!wqe)
		return -ENOSPC;

	irdma_clr_wqes(qp, wqe_idx);

	set_64bit_val(wqe, IRDMA_BYTE_0, 0);
	set_64bit_val(wqe, IRDMA_BYTE_8, 0);
	set_64bit_val(wqe, IRDMA_BYTE_16, 0);

	hdr = LS_64(IRDMAQP_OP_NOP, IRDMAQPSQ_OPCODE) |
	    LS_64(signaled, IRDMAQPSQ_SIGCOMPL) |
	    LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);

	irdma_wmb();		/* make sure WQE is populated before valid bit is set */

	set_64bit_val(wqe, IRDMA_BYTE_24, hdr);
	if (post_sq)
		irdma_uk_qp_post_wr(qp);

	return 0;
}

/**
 * irdma_fragcnt_to_quanta_sq - calculate quanta based on fragment count for SQ
 * @frag_cnt: number of fragments
 * @quanta: quanta for frag_cnt
 */
int
irdma_fragcnt_to_quanta_sq(u32 frag_cnt, u16 *quanta)
{
	switch (frag_cnt) {
	case 0:
	case 1:
		*quanta = IRDMA_QP_WQE_MIN_QUANTA;
		break;
	case 2:
	case 3:
		*quanta = 2;
		break;
	case 4:
	case 5:
		*quanta = 3;
		break;
	case 6:
	case 7:
		*quanta = 4;
		break;
	case 8:
	case 9:
		*quanta = 5;
		break;
	case 10:
	case 11:
		*quanta = 6;
		break;
	case 12:
	case 13:
		*quanta = 7;
		break;
	case 14:
	case 15:		/* when immediate data is present */
		*quanta = 8;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

/**
 * irdma_fragcnt_to_wqesize_rq - calculate wqe size based on fragment count for RQ
 * @frag_cnt: number of fragments
 * @wqe_size: size in bytes given frag_cnt
 */
int
irdma_fragcnt_to_wqesize_rq(u32 frag_cnt, u16 *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;
	case 8:
	case 9:
	case 10:
	case 11:
	case 12:
	case 13:
	case 14:
		*wqe_size = 256;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}