1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright 2013 Cisco Systems, Inc. All rights reserved.
3
4 #include <linux/netdevice.h>
5 #include <linux/spinlock.h>
6
7 #include "vnic_dev.h"
8 #include "vnic_devcmd.h"
9
10 #include "enic_res.h"
11 #include "enic.h"
12 #include "enic_api.h"
13
enic_api_devcmd_proxy_by_index(struct net_device * netdev,int vf,enum vnic_devcmd_cmd cmd,u64 * a0,u64 * a1,int wait)14 int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf,
15 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
16 {
17 int err;
18 struct enic *enic = netdev_priv(netdev);
19 struct vnic_dev *vdev = enic->vdev;
20
21 spin_lock(&enic->enic_api_lock);
22 while (enic->enic_api_busy) {
23 spin_unlock(&enic->enic_api_lock);
24 cpu_relax();
25 spin_lock(&enic->enic_api_lock);
26 }
27
28 spin_lock_bh(&enic->devcmd_lock);
29
30 vnic_dev_cmd_proxy_by_index_start(vdev, vf);
31 err = vnic_dev_cmd(vdev, cmd, a0, a1, wait);
32 vnic_dev_cmd_proxy_end(vdev);
33
34 spin_unlock_bh(&enic->devcmd_lock);
35 spin_unlock(&enic->enic_api_lock);
36
37 return err;
38 }
39 EXPORT_SYMBOL(enic_api_devcmd_proxy_by_index);
40