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https://github.com/freebsd/freebsd-src
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9c067b844f
This driver is based of the enic (Cisco VIC) DPDK driver. It provides basic ethernet functionality. Has been run with various VIC cards to do UEFI PXE boot with NFS root.
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*/
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#include "enic.h"
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#include "vnic_dev.h"
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#include "vnic_intr.h"
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void vnic_intr_free(struct vnic_intr *intr)
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{
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intr->ctrl = NULL;
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}
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int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
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unsigned int index)
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{
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intr->index = index;
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intr->vdev = vdev;
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intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
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if (!intr->ctrl) {
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pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
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return -EINVAL;
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}
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return 0;
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}
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void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
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unsigned int coalescing_type, unsigned int mask_on_assertion)
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{
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vnic_intr_coalescing_timer_set(intr, coalescing_timer);
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ENIC_BUS_WRITE_4(intr->ctrl, INTR_COALESCING_TYPE, coalescing_type);
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ENIC_BUS_WRITE_4(intr->ctrl, INTR_MASK_ON_ASSERTION, mask_on_assertion);
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ENIC_BUS_WRITE_4(intr->ctrl, INTR_CREDITS, 0);
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}
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void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
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u32 coalescing_timer)
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{
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ENIC_BUS_WRITE_4(intr->ctrl, INTR_COALESCING_TIMER,
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vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev, coalescing_timer));
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}
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void vnic_intr_clean(struct vnic_intr *intr)
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{
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ENIC_BUS_WRITE_4(intr->ctrl, INTR_CREDITS, 0);
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}
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