1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2008-2017 Cisco Systems, Inc. All rights reserved. 3 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4 */ 5 6 #include "enic.h" 7 #include "vnic_dev.h" 8 #include "vnic_intr.h" 9 10 void vnic_intr_free(struct vnic_intr *intr) 11 { 12 intr->ctrl = NULL; 13 } 14 15 int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, 16 unsigned int index) 17 { 18 intr->index = index; 19 intr->vdev = vdev; 20 21 intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index); 22 if (!intr->ctrl) { 23 pr_err("Failed to hook INTR[%d].ctrl resource\n", index); 24 return -EINVAL; 25 } 26 27 return 0; 28 } 29 30 void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer, 31 unsigned int coalescing_type, unsigned int mask_on_assertion) 32 { 33 vnic_intr_coalescing_timer_set(intr, coalescing_timer); 34 ENIC_BUS_WRITE_4(intr->ctrl, INTR_COALESCING_TYPE, coalescing_type); 35 ENIC_BUS_WRITE_4(intr->ctrl, INTR_MASK_ON_ASSERTION, mask_on_assertion); 36 ENIC_BUS_WRITE_4(intr->ctrl, INTR_CREDITS, 0); 37 } 38 39 void vnic_intr_coalescing_timer_set(struct vnic_intr *intr, 40 u32 coalescing_timer) 41 { 42 ENIC_BUS_WRITE_4(intr->ctrl, INTR_COALESCING_TIMER, 43 vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev, coalescing_timer)); 44 } 45 46 void vnic_intr_clean(struct vnic_intr *intr) 47 { 48 ENIC_BUS_WRITE_4(intr->ctrl, INTR_CREDITS, 0); 49 } 50