46 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2// 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