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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright 2008-2010 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 12#include "vnic_dev.h"13#include "vnic_cq.h"14#include "enic.h"15 16void vnic_cq_free(struct vnic_cq *cq)17{18 vnic_dev_free_desc_ring(cq->vdev, &cq->ring);19 20 cq->ctrl = NULL;21}22 23int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,24 unsigned int desc_count, unsigned int desc_size)25{26 cq->index = index;27 cq->vdev = vdev;28 29 cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index);30 if (!cq->ctrl) {31 vdev_err(vdev, "Failed to hook CQ[%d] resource\n", index);32 return -EINVAL;33 }34 35 return vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size);36}37 38void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,39 unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,40 unsigned int cq_tail_color, unsigned int interrupt_enable,41 unsigned int cq_entry_enable, unsigned int cq_message_enable,42 unsigned int interrupt_offset, u64 cq_message_addr)43{44 u64 paddr;45 46 paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;47 writeq(paddr, &cq->ctrl->ring_base);48 iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size);49 iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable);50 iowrite32(color_enable, &cq->ctrl->color_enable);51 iowrite32(cq_head, &cq->ctrl->cq_head);52 iowrite32(cq_tail, &cq->ctrl->cq_tail);53 iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color);54 iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable);55 iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable);56 iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);57 iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);58 writeq(cq_message_addr, &cq->ctrl->cq_message_addr);59 60 cq->interrupt_offset = interrupt_offset;61}62 63void vnic_cq_clean(struct vnic_cq *cq)64{65 cq->to_clean = 0;66 cq->last_color = 0;67 68 iowrite32(0, &cq->ctrl->cq_head);69 iowrite32(0, &cq->ctrl->cq_tail);70 iowrite32(1, &cq->ctrl->cq_tail_color);71 72 vnic_dev_clear_desc_ring(&cq->ring);73}74