1 /*
2 * Copyright 2013 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
19 #include <linux/netdevice.h>
20 #include <linux/spinlock.h>
21
22 #include "vnic_dev.h"
23 #include "vnic_devcmd.h"
24
25 #include "enic_res.h"
26 #include "enic.h"
27 #include "enic_api.h"
28
enic_api_devcmd_proxy_by_index(struct net_device * netdev,int vf,enum vnic_devcmd_cmd cmd,u64 * a0,u64 * a1,int wait)29 int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf,
30 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
31 {
32 int err;
33 struct enic *enic = netdev_priv(netdev);
34 struct vnic_dev *vdev = enic->vdev;
35
36 spin_lock(&enic->enic_api_lock);
37 while (enic->enic_api_busy) {
38 spin_unlock(&enic->enic_api_lock);
39 cpu_relax();
40 spin_lock(&enic->enic_api_lock);
41 }
42
43 spin_lock_bh(&enic->devcmd_lock);
44
45 vnic_dev_cmd_proxy_by_index_start(vdev, vf);
46 err = vnic_dev_cmd(vdev, cmd, a0, a1, wait);
47 vnic_dev_cmd_proxy_end(vdev);
48
49 spin_unlock_bh(&enic->devcmd_lock);
50 spin_unlock(&enic->enic_api_lock);
51
52 return err;
53 }
54 EXPORT_SYMBOL(enic_api_devcmd_proxy_by_index);
55