1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
4 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
5 */
6
7#include <linux/kernel.h>
8#include <linux/errno.h>
9#include <linux/types.h>
10#include <linux/pci.h>
11#include <linux/delay.h>
12#include "vnic_dev.h"
13#include "vnic_intr.h"
14
15void vnic_intr_free(struct vnic_intr *intr)
16{
17	intr->ctrl = NULL;
18}
19
20int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
21	unsigned int index)
22{
23	intr->index = index;
24	intr->vdev = vdev;
25
26	intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
27	if (!intr->ctrl) {
28		printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource\n",
29			index);
30		return -EINVAL;
31	}
32
33	return 0;
34}
35
36void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
37	unsigned int coalescing_type, unsigned int mask_on_assertion)
38{
39	iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
40	iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
41	iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
42	iowrite32(0, &intr->ctrl->int_credits);
43}
44
45void vnic_intr_clean(struct vnic_intr *intr)
46{
47	iowrite32(0, &intr->ctrl->int_credits);
48}
49