/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright 2008-2017 Cisco Systems, Inc.  All rights reserved.
 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 */

#include "enic.h"
#include "vnic_dev.h"
#include "vnic_cq.h"

void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
        unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
        unsigned int cq_tail_color, unsigned int interrupt_enable,
        unsigned int cq_entry_enable, unsigned int cq_message_enable,
        unsigned int interrupt_offset, u64 cq_message_addr)
{
        u64 paddr;

        paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
        ENIC_BUS_WRITE_8(cq->ctrl, CQ_RING_BASE, paddr);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_RING_SIZE, cq->ring.desc_count);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_FLOW_CONTROL_ENABLE, flow_control_enable);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_COLOR_ENABLE, color_enable);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_HEAD, cq_head);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_TAIL, cq_tail);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_TAIL_COLOR, cq_tail_color);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_INTR_ENABLE, interrupt_enable);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_ENTRY_ENABLE, cq_entry_enable);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_MESSAGE_ENABLE, cq_message_enable);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_INTR_OFFSET, interrupt_offset);
        ENIC_BUS_WRITE_8(cq->ctrl, CQ_MESSAGE_ADDR, cq_message_addr);

        cq->interrupt_offset = interrupt_offset;
}

void vnic_cq_clean(struct vnic_cq *cq)
{
        cq->to_clean = 0;
        cq->last_color = 0;

        ENIC_BUS_WRITE_4(cq->ctrl, CQ_HEAD, 0);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_TAIL, 0);
        ENIC_BUS_WRITE_4(cq->ctrl, CQ_TAIL_COLOR, 1);
}