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
vnic_intr_free(struct vnic_intr * intr)10 void vnic_intr_free(struct vnic_intr *intr)
11 {
12 intr->ctrl = NULL;
13 }
14
vnic_intr_alloc(struct vnic_dev * vdev,struct vnic_intr * intr,unsigned int index)15 int 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
vnic_intr_init(struct vnic_intr * intr,u32 coalescing_timer,unsigned int coalescing_type,unsigned int mask_on_assertion)30 void 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
vnic_intr_coalescing_timer_set(struct vnic_intr * intr,u32 coalescing_timer)39 void 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
vnic_intr_clean(struct vnic_intr * intr)46 void vnic_intr_clean(struct vnic_intr *intr)
47 {
48 ENIC_BUS_WRITE_4(intr->ctrl, INTR_CREDITS, 0);
49 }
50