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 "vnic_dev.h"
7 #include "vnic_intr.h"
8
vnic_intr_free(struct vnic_intr * intr)9 void vnic_intr_free(struct vnic_intr *intr)
10 {
11 intr->ctrl = NULL;
12 }
13
vnic_intr_alloc(struct vnic_dev * vdev,struct vnic_intr * intr,unsigned int index)14 int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
15 unsigned int index)
16 {
17 intr->index = index;
18 intr->vdev = vdev;
19
20 intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
21 if (!intr->ctrl) {
22 pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
23 return -EINVAL;
24 }
25
26 return 0;
27 }
28
vnic_intr_init(struct vnic_intr * intr,uint32_t coalescing_timer,unsigned int coalescing_type,unsigned int mask_on_assertion)29 void vnic_intr_init(struct vnic_intr *intr, uint32_t coalescing_timer,
30 unsigned int coalescing_type, unsigned int mask_on_assertion)
31 {
32 vnic_intr_coalescing_timer_set(intr, coalescing_timer);
33 iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
34 iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
35 iowrite32(0, &intr->ctrl->int_credits);
36 }
37
vnic_intr_coalescing_timer_set(struct vnic_intr * intr,uint32_t coalescing_timer)38 void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
39 uint32_t coalescing_timer)
40 {
41 iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev,
42 coalescing_timer), &intr->ctrl->coalescing_timer);
43 }
44
vnic_intr_clean(struct vnic_intr * intr)45 void vnic_intr_clean(struct vnic_intr *intr)
46 {
47 iowrite32(0, &intr->ctrl->int_credits);
48 }
49