1 /*
2 This file is provided under a dual BSD/GPLv2 license. When using or
3 redistributing this file, you may do so under either license.
4
5 GPL LICENSE SUMMARY
6 Copyright(c) 2015 Intel Corporation.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of version 2 of the GNU General Public License as
9 published by the Free Software Foundation.
10
11 This program is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15
16 Contact Information:
17 qat-linux@intel.com
18
19 BSD LICENSE
20 Copyright(c) 2015 Intel Corporation.
21 Redistribution and use in source and binary forms, with or without
22 modification, are permitted provided that the following conditions
23 are met:
24
25 * Redistributions of source code must retain the above copyright
26 notice, this list of conditions and the following disclaimer.
27 * Redistributions in binary form must reproduce the above copyright
28 notice, this list of conditions and the following disclaimer in
29 the documentation and/or other materials provided with the
30 distribution.
31 * Neither the name of Intel Corporation nor the names of its
32 contributors may be used to endorse or promote products derived
33 from this software without specific prior written permission.
34
35 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46 */
47 #include "adf_accel_devices.h"
48 #include "adf_common_drv.h"
49 #include "adf_pf2vf_msg.h"
50
51 /**
52 * adf_vf2pf_init() - send init msg to PF
53 * @accel_dev: Pointer to acceleration VF device.
54 *
55 * Function sends an init messge from the VF to a PF
56 *
57 * Return: 0 on success, error code otherwise.
58 */
59 int adf_vf2pf_init(struct adf_accel_dev *accel_dev)
60 {
61 u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
62 (ADF_VF2PF_MSGTYPE_INIT << ADF_VF2PF_MSGTYPE_SHIFT));
63
64 if (adf_iov_putmsg(accel_dev, msg, 0)) {
65 dev_err(&GET_DEV(accel_dev),
66 "Failed to send Init event to PF\n");
67 return -EFAULT;
68 }
69 set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
70 return 0;
71 }
72 EXPORT_SYMBOL_GPL(adf_vf2pf_init);
73
74 /**
75 * adf_vf2pf_shutdown() - send shutdown msg to PF
76 * @accel_dev: Pointer to acceleration VF device.
77 *
78 * Function sends a shutdown messge from the VF to a PF
79 *
80 * Return: void
81 */
82 void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev)
83 {
84 u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
85 (ADF_VF2PF_MSGTYPE_SHUTDOWN << ADF_VF2PF_MSGTYPE_SHIFT));
86
87 if (test_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status))
88 if (adf_iov_putmsg(accel_dev, msg, 0))
89 dev_err(&GET_DEV(accel_dev),
90 "Failed to send Shutdown event to PF\n");
91 }
92 EXPORT_SYMBOL_GPL(adf_vf2pf_shutdown);