1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
2 /* Copyright(c) 2015 - 2020 Intel Corporation */
3 #include "adf_accel_devices.h"
4 #include "adf_common_drv.h"
5 #include "adf_pf2vf_msg.h"
6 
7 /**
8  * adf_vf2pf_notify_init() - send init msg to PF
9  * @accel_dev:  Pointer to acceleration VF device.
10  *
11  * Function sends an init message from the VF to a PF
12  *
13  * Return: 0 on success, error code otherwise.
14  */
adf_vf2pf_notify_init(struct adf_accel_dev * accel_dev)15 int adf_vf2pf_notify_init(struct adf_accel_dev *accel_dev)
16 {
17 	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
18 		(ADF_VF2PF_MSGTYPE_INIT << ADF_VF2PF_MSGTYPE_SHIFT));
19 
20 	if (adf_send_vf2pf_msg(accel_dev, msg)) {
21 		dev_err(&GET_DEV(accel_dev),
22 			"Failed to send Init event to PF\n");
23 		return -EFAULT;
24 	}
25 	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
26 	return 0;
27 }
28 EXPORT_SYMBOL_GPL(adf_vf2pf_notify_init);
29 
30 /**
31  * adf_vf2pf_notify_shutdown() - send shutdown msg to PF
32  * @accel_dev:  Pointer to acceleration VF device.
33  *
34  * Function sends a shutdown message from the VF to a PF
35  *
36  * Return: void
37  */
adf_vf2pf_notify_shutdown(struct adf_accel_dev * accel_dev)38 void adf_vf2pf_notify_shutdown(struct adf_accel_dev *accel_dev)
39 {
40 	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
41 	    (ADF_VF2PF_MSGTYPE_SHUTDOWN << ADF_VF2PF_MSGTYPE_SHIFT));
42 
43 	if (test_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status))
44 		if (adf_send_vf2pf_msg(accel_dev, msg))
45 			dev_err(&GET_DEV(accel_dev),
46 				"Failed to send Shutdown event to PF\n");
47 }
48 EXPORT_SYMBOL_GPL(adf_vf2pf_notify_shutdown);
49