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dfb99b050e
Based on the normalized pattern:
this program is free software you may redistribute it and/or modify it
under the terms of the gnu general public license as published by the
free software foundation version 2 of the license the software is
provided as is without warranty of any kind express or implied
including but not limited to the warranties of merchantability fitness
for a particular purpose and noninfringement in no event shall the
authors or copyright holders be liable for any claim damages or other
liability whether in an action of contract tort or otherwise arising
from out of or in connection with the software or the use or other
dealings in the software
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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// Copyright 2014 Cisco Systems, Inc. All rights reserved.
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include "vnic_dev.h"
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#include "vnic_cq.h"
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void svnic_cq_free(struct vnic_cq *cq)
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{
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svnic_dev_free_desc_ring(cq->vdev, &cq->ring);
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cq->ctrl = NULL;
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}
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int svnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq,
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unsigned int index, unsigned int desc_count, unsigned int desc_size)
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{
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cq->index = index;
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cq->vdev = vdev;
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cq->ctrl = svnic_dev_get_res(vdev, RES_TYPE_CQ, index);
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if (!cq->ctrl) {
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pr_err("Failed to hook CQ[%d] resource\n", index);
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return -EINVAL;
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}
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return svnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size);
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}
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void svnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
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unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
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unsigned int cq_tail_color, unsigned int interrupt_enable,
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unsigned int cq_entry_enable, unsigned int cq_message_enable,
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unsigned int interrupt_offset, u64 cq_message_addr)
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{
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u64 paddr;
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paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
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writeq(paddr, &cq->ctrl->ring_base);
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iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size);
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iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable);
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iowrite32(color_enable, &cq->ctrl->color_enable);
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iowrite32(cq_head, &cq->ctrl->cq_head);
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iowrite32(cq_tail, &cq->ctrl->cq_tail);
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iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color);
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iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable);
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iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable);
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iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
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iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
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writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
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}
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void svnic_cq_clean(struct vnic_cq *cq)
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{
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cq->to_clean = 0;
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cq->last_color = 0;
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iowrite32(0, &cq->ctrl->cq_head);
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iowrite32(0, &cq->ctrl->cq_tail);
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iowrite32(1, &cq->ctrl->cq_tail_color);
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svnic_dev_clear_desc_ring(&cq->ring);
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}
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