1// SPDX-License-Identifier: GPL-2.0-only
2// Copyright 2014 Cisco Systems, Inc.  All rights reserved.
3
4#include <linux/kernel.h>
5#include <linux/errno.h>
6#include <linux/types.h>
7#include <linux/pci.h>
8#include <linux/delay.h>
9#include "vnic_dev.h"
10#include "vnic_intr.h"
11
12void svnic_intr_free(struct vnic_intr *intr)
13{
14	intr->ctrl = NULL;
15}
16
17int svnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
18	unsigned int index)
19{
20	intr->index = index;
21	intr->vdev = vdev;
22
23	intr->ctrl = svnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
24	if (!intr->ctrl) {
25		pr_err("Failed to hook INTR[%d].ctrl resource\n",
26			index);
27		return -EINVAL;
28	}
29
30	return 0;
31}
32
33void svnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
34	unsigned int coalescing_type, unsigned int mask_on_assertion)
35{
36	iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
37	iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
38	iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
39	iowrite32(0, &intr->ctrl->int_credits);
40}
41
42void svnic_intr_clean(struct vnic_intr *intr)
43{
44	iowrite32(0, &intr->ctrl->int_credits);
45}
46