| Abhijeet Joglekar | 5df6d73 | 2009-04-17 18:33:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008 Cisco Systems, Inc. All rights reserved. |
| 3 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. |
| 4 | * |
| 5 | * This program is free software; you may redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; version 2 of the License. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 10 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 11 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 12 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 13 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 15 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 16 | * SOFTWARE. |
| 17 | */ |
| 18 | |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/errno.h> |
| 21 | #include <linux/types.h> |
| 22 | #include <linux/pci.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include "vnic_dev.h" |
| 25 | #include "vnic_intr.h" |
| 26 | |
| 27 | void vnic_intr_free(struct vnic_intr *intr) |
| 28 | { |
| 29 | intr->ctrl = NULL; |
| 30 | } |
| 31 | |
| 32 | int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, |
| 33 | unsigned int index) |
| 34 | { |
| 35 | intr->index = index; |
| 36 | intr->vdev = vdev; |
| 37 | |
| 38 | intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index); |
| 39 | if (!intr->ctrl) { |
| 40 | printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource\n", |
| 41 | index); |
| 42 | return -EINVAL; |
| 43 | } |
| 44 | |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer, |
| 49 | unsigned int coalescing_type, unsigned int mask_on_assertion) |
| 50 | { |
| 51 | iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer); |
| 52 | iowrite32(coalescing_type, &intr->ctrl->coalescing_type); |
| 53 | iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion); |
| 54 | iowrite32(0, &intr->ctrl->int_credits); |
| 55 | } |
| 56 | |
| 57 | void vnic_intr_clean(struct vnic_intr *intr) |
| 58 | { |
| 59 | iowrite32(0, &intr->ctrl->int_credits); |
| 60 | } |