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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* Copyright (c) 2014, Cisco Systems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ident "$Id: vnic_intr.c 171146 2014-05-02 07:08:20Z ssujith $"
#include "vnic_dev.h"
#include "vnic_intr.h"
void vnic_intr_free(struct vnic_intr *intr)
{
intr->ctrl = NULL;
}
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
unsigned int index)
{
intr->index = index;
intr->vdev = vdev;
intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
if (!intr->ctrl) {
pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
return -EINVAL;
}
return 0;
}
void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
unsigned int coalescing_type, unsigned int mask_on_assertion)
{
vnic_intr_coalescing_timer_set(intr, coalescing_timer);
iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
iowrite32(0, &intr->ctrl->int_credits);
}
void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
u32 coalescing_timer)
{
iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev,
coalescing_timer), &intr->ctrl->coalescing_timer);
}
void vnic_intr_clean(struct vnic_intr *intr)
{
iowrite32(0, &intr->ctrl->int_credits);
}
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