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85 lines
2.7 KiB
85 lines
2.7 KiB
/* |
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* Copyright 2008 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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* This program is free software; you may redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; version 2 of the License. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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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 vnic_cq_free(struct vnic_cq *cq) |
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{ |
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vnic_dev_free_desc_ring(cq->vdev, &cq->ring); |
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cq->ctrl = NULL; |
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} |
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int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index, |
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unsigned int desc_count, unsigned int desc_size) |
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{ |
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int err; |
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cq->index = index; |
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cq->vdev = vdev; |
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cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index); |
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if (!cq->ctrl) { |
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printk(KERN_ERR "Failed to hook CQ[%d] resource\n", index); |
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return -EINVAL; |
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} |
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err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size); |
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if (err) |
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return err; |
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return 0; |
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} |
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void vnic_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 vnic_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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vnic_dev_clear_desc_ring(&cq->ring); |
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}
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