projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| c8806b6c NM |
1 | /* |
| 2 | * Copyright 2014 Cisco Systems, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * This program is free software; you may redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License as published by | |
| 6 | * the Free Software Foundation; version 2 of the License. | |
| 7 | * | |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| 9 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 10 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| 11 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
| 12 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
| 13 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| 14 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
| 15 | * SOFTWARE. | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/errno.h> | |
| 19 | #include <linux/types.h> | |
| 20 | #include <linux/pci.h> | |
| 21 | #include "vnic_dev.h" | |
| 22 | #include "vnic_cq.h" | |
| 23 | ||
| 24 | void svnic_cq_free(struct vnic_cq *cq) | |
| 25 | { | |
| 26 | svnic_dev_free_desc_ring(cq->vdev, &cq->ring); | |
| 27 | ||
| 28 | cq->ctrl = NULL; | |
| 29 | } | |
| 30 | ||
| 31 | int svnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, | |
| 32 | unsigned int index, unsigned int desc_count, unsigned int desc_size) | |
| 33 | { | |
| 34 | int err; | |
| 35 | ||
| 36 | cq->index = index; | |
| 37 | cq->vdev = vdev; | |
| 38 | ||
| 39 | cq->ctrl = svnic_dev_get_res(vdev, RES_TYPE_CQ, index); | |
| 40 | if (!cq->ctrl) { | |
| 41 | pr_err("Failed to hook CQ[%d] resource\n", index); | |
| 42 | ||
| 43 | return -EINVAL; | |
| 44 | } | |
| 45 | ||
| 46 | err = svnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size); | |
| 47 | if (err) | |
| 48 | return err; | |
| 49 | ||
| 50 | return 0; | |
| 51 | } | |
| 52 | ||
| 53 | void svnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, | |
| 54 | unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, | |
| 55 | unsigned int cq_tail_color, unsigned int interrupt_enable, | |
| 56 | unsigned int cq_entry_enable, unsigned int cq_message_enable, | |
| 57 | unsigned int interrupt_offset, u64 cq_message_addr) | |
| 58 | { | |
| 59 | u64 paddr; | |
| 60 | ||
| 61 | paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET; | |
| 62 | writeq(paddr, &cq->ctrl->ring_base); | |
| 63 | iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size); | |
| 64 | iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable); | |
| 65 | iowrite32(color_enable, &cq->ctrl->color_enable); | |
| 66 | iowrite32(cq_head, &cq->ctrl->cq_head); | |
| 67 | iowrite32(cq_tail, &cq->ctrl->cq_tail); | |
| 68 | iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color); | |
| 69 | iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable); | |
| 70 | iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable); | |
| 71 | iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable); | |
| 72 | iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset); | |
| 73 | writeq(cq_message_addr, &cq->ctrl->cq_message_addr); | |
| 74 | } | |
| 75 | ||
| 76 | void svnic_cq_clean(struct vnic_cq *cq) | |
| 77 | { | |
| 78 | cq->to_clean = 0; | |
| 79 | cq->last_color = 0; | |
| 80 | ||
| 81 | iowrite32(0, &cq->ctrl->cq_head); | |
| 82 | iowrite32(0, &cq->ctrl->cq_tail); | |
| 83 | iowrite32(1, &cq->ctrl->cq_tail_color); | |
| 84 | ||
| 85 | svnic_dev_clear_desc_ring(&cq->ring); | |
| 86 | } |