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 15 void vnic_intr_free(struct vnic_intr *intr) 16 { 17 intr->ctrl = NULL; 18 } 19 20 int 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 36 void 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 45 void vnic_intr_clean(struct vnic_intr *intr) 46 { 47 iowrite32(0, &intr->ctrl->int_credits); 48 } 49