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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright 2008-2010 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 13#include "vnic_dev.h"14#include "vnic_intr.h"15#include "enic.h"16 17void vnic_intr_free(struct vnic_intr *intr)18{19 intr->ctrl = NULL;20}21 22int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,23 unsigned int index)24{25 intr->index = index;26 intr->vdev = vdev;27 28 intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);29 if (!intr->ctrl) {30 vdev_err(vdev, "Failed to hook INTR[%d].ctrl resource\n",31 index);32 return -EINVAL;33 }34 35 return 0;36}37 38void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,39 unsigned int coalescing_type, unsigned int mask_on_assertion)40{41 vnic_intr_coalescing_timer_set(intr, coalescing_timer);42 iowrite32(coalescing_type, &intr->ctrl->coalescing_type);43 iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);44 iowrite32(0, &intr->ctrl->int_credits);45}46 47void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,48 u32 coalescing_timer)49{50 iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev,51 coalescing_timer), &intr->ctrl->coalescing_timer);52}53 54void vnic_intr_clean(struct vnic_intr *intr)55{56 iowrite32(0, &intr->ctrl->int_credits);57}58