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1da177e4 LT |
1 | /* |
2 | * HvLpEvent.h | |
3 | * Copyright (C) 2001 Mike Corrigan IBM Corporation | |
45dc76aa | 4 | * |
1da177e4 LT |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
45dc76aa | 9 | * |
1da177e4 LT |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
45dc76aa | 14 | * |
1da177e4 LT |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | ||
45dc76aa SR |
20 | /* This file contains the class for HV events in the system. */ |
21 | ||
1da177e4 LT |
22 | #ifndef _HVLPEVENT_H |
23 | #define _HVLPEVENT_H | |
24 | ||
25 | #include <asm/types.h> | |
26 | #include <asm/ptrace.h> | |
1ec65d76 | 27 | #include <asm/iseries/hv_types.h> |
c0a8d05c | 28 | #include <asm/iseries/hv_call_event.h> |
1da177e4 | 29 | |
45dc76aa SR |
30 | /* |
31 | * HvLpEvent is the structure for Lp Event messages passed between | |
32 | * partitions through PLIC. | |
33 | */ | |
34 | ||
35 | struct HvEventFlags { | |
36 | u8 xValid:1; /* Indicates a valid request x00-x00 */ | |
37 | u8 xRsvd1:4; /* Reserved ... */ | |
38 | u8 xAckType:1; /* Immediate or deferred ... */ | |
39 | u8 xAckInd:1; /* Indicates if ACK required ... */ | |
40 | u8 xFunction:1; /* Interrupt or Acknowledge ... */ | |
1da177e4 LT |
41 | }; |
42 | ||
43 | ||
45dc76aa SR |
44 | struct HvLpEvent { |
45 | struct HvEventFlags xFlags; /* Event flags x00-x00 */ | |
46 | u8 xType; /* Type of message x01-x01 */ | |
47 | u16 xSubtype; /* Subtype for event x02-x03 */ | |
48 | u8 xSourceLp; /* Source LP x04-x04 */ | |
49 | u8 xTargetLp; /* Target LP x05-x05 */ | |
50 | u8 xSizeMinus1; /* Size of Derived class - 1 x06-x06 */ | |
51 | u8 xRc; /* RC for Ack flows x07-x07 */ | |
52 | u16 xSourceInstanceId; /* Source sides instance id x08-x09 */ | |
53 | u16 xTargetInstanceId; /* Target sides instance id x0A-x0B */ | |
1da177e4 | 54 | union { |
45dc76aa SR |
55 | u32 xSubtypeData; /* Data usable by the subtype x0C-x0F */ |
56 | u16 xSubtypeDataShort[2]; /* Data as 2 shorts */ | |
57 | u8 xSubtypeDataChar[4]; /* Data as 4 chars */ | |
1da177e4 LT |
58 | } x; |
59 | ||
45dc76aa | 60 | u64 xCorrelationToken; /* Unique value for source/type x10-x17 */ |
1da177e4 LT |
61 | }; |
62 | ||
1da177e4 LT |
63 | typedef void (*LpEventHandler)(struct HvLpEvent *, struct pt_regs *); |
64 | ||
45dc76aa SR |
65 | /* Register a handler for an event type - returns 0 on success */ |
66 | extern int HvLpEvent_registerHandler(HvLpEvent_Type eventType, | |
67 | LpEventHandler hdlr); | |
1da177e4 | 68 | |
45dc76aa SR |
69 | /* |
70 | * Unregister a handler for an event type | |
71 | * | |
72 | * This call will sleep until the handler being removed is guaranteed to | |
73 | * be no longer executing on any CPU. Do not call with locks held. | |
74 | * | |
75 | * returns 0 on success | |
76 | * Unregister will fail if there are any paths open for the type | |
77 | */ | |
78 | extern int HvLpEvent_unregisterHandler(HvLpEvent_Type eventType); | |
1da177e4 | 79 | |
45dc76aa SR |
80 | /* |
81 | * Open an Lp Event Path for an event type | |
82 | * returns 0 on success | |
83 | * openPath will fail if there is no handler registered for the event type. | |
84 | * The lpIndex specified is the partition index for the target partition | |
85 | * (for VirtualIo, VirtualLan and SessionMgr) other types specify zero) | |
86 | */ | |
87 | extern int HvLpEvent_openPath(HvLpEvent_Type eventType, HvLpIndex lpIndex); | |
1da177e4 | 88 | |
45dc76aa SR |
89 | /* |
90 | * Close an Lp Event Path for a type and partition | |
91 | * returns 0 on sucess | |
92 | */ | |
93 | extern int HvLpEvent_closePath(HvLpEvent_Type eventType, HvLpIndex lpIndex); | |
1da177e4 LT |
94 | |
95 | #define HvLpEvent_Type_Hypervisor 0 | |
96 | #define HvLpEvent_Type_MachineFac 1 | |
97 | #define HvLpEvent_Type_SessionMgr 2 | |
98 | #define HvLpEvent_Type_SpdIo 3 | |
99 | #define HvLpEvent_Type_VirtualBus 4 | |
100 | #define HvLpEvent_Type_PciIo 5 | |
101 | #define HvLpEvent_Type_RioIo 6 | |
102 | #define HvLpEvent_Type_VirtualLan 7 | |
103 | #define HvLpEvent_Type_VirtualIo 8 | |
104 | #define HvLpEvent_Type_NumTypes 9 | |
105 | ||
106 | #define HvLpEvent_Rc_Good 0 | |
107 | #define HvLpEvent_Rc_BufferNotAvailable 1 | |
108 | #define HvLpEvent_Rc_Cancelled 2 | |
109 | #define HvLpEvent_Rc_GenericError 3 | |
110 | #define HvLpEvent_Rc_InvalidAddress 4 | |
111 | #define HvLpEvent_Rc_InvalidPartition 5 | |
112 | #define HvLpEvent_Rc_InvalidSize 6 | |
113 | #define HvLpEvent_Rc_InvalidSubtype 7 | |
114 | #define HvLpEvent_Rc_InvalidSubtypeData 8 | |
115 | #define HvLpEvent_Rc_InvalidType 9 | |
116 | #define HvLpEvent_Rc_PartitionDead 10 | |
117 | #define HvLpEvent_Rc_PathClosed 11 | |
118 | #define HvLpEvent_Rc_SubtypeError 12 | |
119 | ||
120 | #define HvLpEvent_Function_Ack 0 | |
121 | #define HvLpEvent_Function_Int 1 | |
122 | ||
123 | #define HvLpEvent_AckInd_NoAck 0 | |
124 | #define HvLpEvent_AckInd_DoAck 1 | |
125 | ||
126 | #define HvLpEvent_AckType_ImmediateAck 0 | |
127 | #define HvLpEvent_AckType_DeferredAck 1 | |
128 | ||
129 | #define HvLpDma_Direction_LocalToRemote 0 | |
130 | #define HvLpDma_Direction_RemoteToLocal 1 | |
131 | ||
132 | #define HvLpDma_AddressType_TceIndex 0 | |
133 | #define HvLpDma_AddressType_RealAddress 1 | |
134 | ||
135 | #define HvLpDma_Rc_Good 0 | |
136 | #define HvLpDma_Rc_Error 1 | |
137 | #define HvLpDma_Rc_PartitionDead 2 | |
138 | #define HvLpDma_Rc_PathClosed 3 | |
139 | #define HvLpDma_Rc_InvalidAddress 4 | |
140 | #define HvLpDma_Rc_InvalidLength 5 | |
141 | ||
45dc76aa | 142 | #endif /* _HVLPEVENT_H */ |