/* * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. * Copyright 2007 Nuova Systems, Inc. All rights reserved. * * 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. * */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/types.h> #include <linux/pci.h> #include "vnic_dev.h" #include "vnic_cq.h" void vnic_cq_free(struct vnic_cq *cq) { vnic_dev_free_desc_ring(cq->vdev, &cq->ring); cq->ctrl = NULL; } int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index, unsigned int desc_count, unsigned int desc_size) { int err; cq->index = index; cq->vdev = vdev; cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index); if (!cq->ctrl) { pr_err("Failed to hook CQ[%d] resource\n", index); return -EINVAL; } err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size); if (err) return err; return 0; } void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, unsigned int cq_tail_color, unsigned int interrupt_enable, unsigned int cq_entry_enable, unsigned int cq_message_enable, unsigned int interrupt_offset, u64 cq_message_addr) { u64 paddr; paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET; writeq(paddr, &cq->ctrl->ring_base); iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size); iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable); iowrite32(color_enable, &cq->ctrl->color_enable); iowrite32(cq_head, &cq->ctrl->cq_head); iowrite32(cq_tail, &cq->ctrl->cq_tail); iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color); iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable); iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable); iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable); iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset); writeq(cq_message_addr, &cq->ctrl->cq_message_addr); } void vnic_cq_clean(struct vnic_cq *cq) { cq->to_clean = 0; cq->last_color = 0; iowrite32(0, &cq->ctrl->cq_head); iowrite32(0, &cq->ctrl->cq_tail); iowrite32(1, &cq->ctrl->cq_tail_color); vnic_dev_clear_desc_ring(&cq->ring); }