]>
Commit | Line | Data |
---|---|---|
f1259bba AP |
1 | /** @file\r |
2 | Event Channel function implementation.\r | |
3 | \r | |
4 | Event channel are use to notify of an event that happend in a shared\r | |
5 | structure for example.\r | |
6 | \r | |
7 | Copyright (C) 2014, Citrix Ltd.\r | |
8 | \r | |
9 | This program and the accompanying materials\r | |
10 | are licensed and made available under the terms and conditions of the BSD License\r | |
11 | which accompanies this distribution. The full text of the license may be found at\r | |
12 | http://opensource.org/licenses/bsd-license.php\r | |
13 | \r | |
14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
16 | \r | |
17 | **/\r | |
18 | #include "EventChannel.h"\r | |
19 | #include "XenHypercall.h"\r | |
20 | \r | |
21 | UINT32\r | |
22 | XenEventChannelNotify (\r | |
23 | IN XENBUS_DEVICE *Dev,\r | |
24 | IN evtchn_port_t Port\r | |
25 | )\r | |
26 | {\r | |
27 | INTN ReturnCode;\r | |
28 | evtchn_send_t Send;\r | |
29 | \r | |
30 | Send.port = Port;\r | |
31 | ReturnCode = XenHypercallEventChannelOp (Dev, EVTCHNOP_send, &Send);\r | |
32 | return ReturnCode;\r | |
33 | }\r | |
e86895d9 AP |
34 | \r |
35 | UINT32\r | |
36 | EFIAPI\r | |
37 | XenBusEventChannelAllocate (\r | |
38 | IN XENBUS_PROTOCOL *This,\r | |
39 | IN domid_t DomainId,\r | |
40 | OUT evtchn_port_t *Port\r | |
41 | )\r | |
42 | {\r | |
43 | XENBUS_PRIVATE_DATA *Private;\r | |
44 | evtchn_alloc_unbound_t Parameter;\r | |
45 | UINT32 ReturnCode;\r | |
46 | \r | |
47 | Private = XENBUS_PRIVATE_DATA_FROM_THIS (This);\r | |
48 | \r | |
49 | Parameter.dom = DOMID_SELF;\r | |
50 | Parameter.remote_dom = DomainId;\r | |
51 | ReturnCode = XenHypercallEventChannelOp (Private->Dev,\r | |
52 | EVTCHNOP_alloc_unbound,\r | |
53 | &Parameter);\r | |
54 | if (ReturnCode != 0) {\r | |
55 | DEBUG ((EFI_D_ERROR, "ERROR: alloc_unbound failed with rc=%d", ReturnCode));\r | |
56 | return ReturnCode;\r | |
57 | }\r | |
58 | *Port = Parameter.port;\r | |
59 | return ReturnCode;\r | |
60 | }\r | |
61 | \r | |
62 | UINT32\r | |
63 | EFIAPI\r | |
64 | XenBusEventChannelNotify (\r | |
65 | IN XENBUS_PROTOCOL *This,\r | |
66 | IN evtchn_port_t Port\r | |
67 | )\r | |
68 | {\r | |
69 | XENBUS_PRIVATE_DATA *Private;\r | |
70 | \r | |
71 | Private = XENBUS_PRIVATE_DATA_FROM_THIS(This);\r | |
72 | return XenEventChannelNotify (Private->Dev, Port);\r | |
73 | }\r | |
74 | \r | |
75 | UINT32\r | |
76 | EFIAPI\r | |
77 | XenBusEventChannelClose (\r | |
78 | IN XENBUS_PROTOCOL *This,\r | |
79 | IN evtchn_port_t Port\r | |
80 | )\r | |
81 | {\r | |
82 | XENBUS_PRIVATE_DATA *Private;\r | |
83 | evtchn_close_t Close;\r | |
84 | \r | |
85 | Private = XENBUS_PRIVATE_DATA_FROM_THIS (This);\r | |
86 | Close.port = Port;\r | |
87 | return XenHypercallEventChannelOp (Private->Dev, EVTCHNOP_close, &Close);\r | |
88 | }\r |