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authorScott Feldman <scofeldm@cisco.com>2008-09-15 12:17:11 -0400
committerJeff Garzik <jgarzik@redhat.com>2008-09-18 11:34:53 -0400
commit01f2e4ead2c51226ed1283ef6a8388ca6f4cff8f (patch)
treeb1cc2ef1a191a3bf00f371d5dbc2028e1fee01c5 /drivers/net/enic/vnic_intr.c
parent452c1ce218a68b5dbd626397ecfc65ca89dd3cbb (diff)
enic: add Cisco 10G Ethernet NIC driver
Signed-off-by: Scott Feldman <scofeldm@cisco.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/enic/vnic_intr.c')
-rw-r--r--drivers/net/enic/vnic_intr.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/net/enic/vnic_intr.c b/drivers/net/enic/vnic_intr.c
new file mode 100644
index 000000000000..ddc38f8f4656
--- /dev/null
+++ b/drivers/net/enic/vnic_intr.c
@@ -0,0 +1,62 @@
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
20#include <linux/kernel.h>
21#include <linux/errno.h>
22#include <linux/types.h>
23#include <linux/pci.h>
24#include <linux/delay.h>
25
26#include "vnic_dev.h"
27#include "vnic_intr.h"
28
29void vnic_intr_free(struct vnic_intr *intr)
30{
31 intr->ctrl = NULL;
32}
33
34int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
35 unsigned int index)
36{
37 intr->index = index;
38 intr->vdev = vdev;
39
40 intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
41 if (!intr->ctrl) {
42 printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource\n",
43 index);
44 return -EINVAL;
45 }
46
47 return 0;
48}
49
50void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
51 unsigned int coalescing_type, unsigned int mask_on_assertion)
52{
53 iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
54 iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
55 iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
56 iowrite32(0, &intr->ctrl->int_credits);
57}
58
59void vnic_intr_clean(struct vnic_intr *intr)
60{
61 iowrite32(0, &intr->ctrl->int_credits);
62}