1/* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2008-2017 Cisco Systems, Inc.  All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
4 */
5
6#include "enic.h"
7#include "vnic_dev.h"
8#include "vnic_intr.h"
9
10void vnic_intr_free(struct vnic_intr *intr)
11{
12	intr->ctrl = NULL;
13}
14
15int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
16	unsigned int index)
17{
18	intr->index = index;
19	intr->vdev = vdev;
20
21	intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
22	if (!intr->ctrl) {
23		pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
24		return -EINVAL;
25	}
26
27	return 0;
28}
29
30void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
31	unsigned int coalescing_type, unsigned int mask_on_assertion)
32{
33	vnic_intr_coalescing_timer_set(intr, coalescing_timer);
34	ENIC_BUS_WRITE_4(intr->ctrl, INTR_COALESCING_TYPE, coalescing_type);
35	ENIC_BUS_WRITE_4(intr->ctrl, INTR_MASK_ON_ASSERTION, mask_on_assertion);
36	ENIC_BUS_WRITE_4(intr->ctrl, INTR_CREDITS, 0);
37}
38
39void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
40	u32 coalescing_timer)
41{
42	ENIC_BUS_WRITE_4(intr->ctrl, INTR_COALESCING_TIMER,
43	    vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev, coalescing_timer));
44}
45
46void vnic_intr_clean(struct vnic_intr *intr)
47{
48	ENIC_BUS_WRITE_4(intr->ctrl, INTR_CREDITS, 0);
49}
50