1// SPDX-License-Identifier: GPL-2.0-only 2/* 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