| 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 | |
|---|
| 12 | void svnic_intr_free(struct vnic_intr *intr) |
|---|
| 13 | { |
|---|
| 14 | intr->ctrl = NULL; |
|---|
| 15 | } |
|---|
| 16 | |
|---|
| 17 | int 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, type: 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 | |
|---|
| 33 | void 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 | |
|---|
| 42 | void svnic_intr_clean(struct vnic_intr *intr) |
|---|
| 43 | { |
|---|
| 44 | iowrite32(0, &intr->ctrl->int_credits); |
|---|
| 45 | } |
|---|
| 46 | |
|---|
