1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright 2008 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#include "vnic_dev.h" 13#include "vnic_intr.h" 14 15void vnic_intr_free(struct vnic_intr *intr) 16{ 17 intr->ctrl = NULL; 18} 19 20int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, 21 unsigned int index) 22{ 23 intr->index = index; 24 intr->vdev = vdev; 25 26 intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index); 27 if (!intr->ctrl) { 28 printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource\n", 29 index); 30 return -EINVAL; 31 } 32 33 return 0; 34} 35 36void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer, 37 unsigned int coalescing_type, unsigned int mask_on_assertion) 38{ 39 iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer); 40 iowrite32(coalescing_type, &intr->ctrl->coalescing_type); 41 iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion); 42 iowrite32(0, &intr->ctrl->int_credits); 43} 44 45void vnic_intr_clean(struct vnic_intr *intr) 46{ 47 iowrite32(0, &intr->ctrl->int_credits); 48} 49