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Diffstat (limited to 'include/asm-ppc64/iSeries/ItLpQueue.h')
-rw-r--r-- | include/asm-ppc64/iSeries/ItLpQueue.h | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/include/asm-ppc64/iSeries/ItLpQueue.h b/include/asm-ppc64/iSeries/ItLpQueue.h deleted file mode 100644 index 69b26ad74135..000000000000 --- a/include/asm-ppc64/iSeries/ItLpQueue.h +++ /dev/null | |||
@@ -1,81 +0,0 @@ | |||
1 | /* | ||
2 | * ItLpQueue.h | ||
3 | * Copyright (C) 2001 Mike Corrigan IBM Corporation | ||
4 | * | ||
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. | ||
9 | * | ||
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. | ||
14 | * | ||
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 | #ifndef _ITLPQUEUE_H | ||
20 | #define _ITLPQUEUE_H | ||
21 | |||
22 | /* | ||
23 | * This control block defines the simple LP queue structure that is | ||
24 | * shared between the hypervisor (PLIC) and the OS in order to send | ||
25 | * events to an LP. | ||
26 | */ | ||
27 | |||
28 | #include <asm/types.h> | ||
29 | #include <asm/ptrace.h> | ||
30 | |||
31 | struct HvLpEvent; | ||
32 | |||
33 | #define ITMaxLpQueues 8 | ||
34 | |||
35 | #define NotUsed 0 // Queue will not be used by PLIC | ||
36 | #define DedicatedIo 1 // Queue dedicated to IO processor specified | ||
37 | #define DedicatedLp 2 // Queue dedicated to LP specified | ||
38 | #define Shared 3 // Queue shared for both IO and LP | ||
39 | |||
40 | #define LpEventStackSize 4096 | ||
41 | #define LpEventMaxSize 256 | ||
42 | #define LpEventAlign 64 | ||
43 | |||
44 | struct hvlpevent_queue { | ||
45 | /* | ||
46 | * The xSlicCurEventPtr is the pointer to the next event stack entry | ||
47 | * that will become valid. The OS must peek at this entry to determine | ||
48 | * if it is valid. PLIC will set the valid indicator as the very last | ||
49 | * store into that entry. | ||
50 | * | ||
51 | * When the OS has completed processing of the event then it will mark | ||
52 | * the event as invalid so that PLIC knows it can store into that event | ||
53 | * location again. | ||
54 | * | ||
55 | * If the event stack fills and there are overflow events, then PLIC | ||
56 | * will set the xPlicOverflowIntPending flag in which case the OS will | ||
57 | * have to fetch the additional LP events once they have drained the | ||
58 | * event stack. | ||
59 | * | ||
60 | * The first 16-bytes are known by both the OS and PLIC. The remainder | ||
61 | * of the cache line is for use by the OS. | ||
62 | */ | ||
63 | u8 xPlicOverflowIntPending;// 0x00 Overflow events are pending | ||
64 | u8 xPlicStatus; // 0x01 DedicatedIo or DedicatedLp or NotUsed | ||
65 | u16 xSlicLogicalProcIndex; // 0x02 Logical Proc Index for correlation | ||
66 | u8 xPlicRsvd[12]; // 0x04 | ||
67 | char *xSlicCurEventPtr; // 0x10 | ||
68 | char *xSlicLastValidEventPtr; // 0x18 | ||
69 | char *xSlicEventStackPtr; // 0x20 | ||
70 | u8 xIndex; // 0x28 unique sequential index. | ||
71 | u8 xSlicRsvd[3]; // 0x29-2b | ||
72 | spinlock_t lock; | ||
73 | }; | ||
74 | |||
75 | extern struct hvlpevent_queue hvlpevent_queue; | ||
76 | |||
77 | extern int hvlpevent_is_pending(void); | ||
78 | extern void process_hvlpevents(struct pt_regs *); | ||
79 | extern void setup_hvlpevent_queue(void); | ||
80 | |||
81 | #endif /* _ITLPQUEUE_H */ | ||