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authorKelly Daly <kelly@au.ibm.com>2005-11-01 23:02:47 -0500
committerKelly Daly <kelly@au.ibm.com>2005-11-01 23:02:47 -0500
commitc43a55ff4e55d1bcfdf0cadfe2f00281e156c436 (patch)
treeb6ca4cd30ab00fa3bb2a6de16b6c76066b0d6ddd /include/asm-powerpc/iseries
parent59ce20bb341282d5ecf17fd8b0ac093dd6350e5e (diff)
merge filename and modify references to iseries/lpar_map.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
Diffstat (limited to 'include/asm-powerpc/iseries')
-rw-r--r--include/asm-powerpc/iseries/lpar_map.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/include/asm-powerpc/iseries/lpar_map.h b/include/asm-powerpc/iseries/lpar_map.h
new file mode 100644
index 000000000000..a6840b186d03
--- /dev/null
+++ b/include/asm-powerpc/iseries/lpar_map.h
@@ -0,0 +1,83 @@
1/*
2 * LparMap.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 _LPARMAP_H
20#define _LPARMAP_H
21
22#ifndef __ASSEMBLY__
23
24#include <asm/types.h>
25
26/*
27 * The iSeries hypervisor will set up mapping for one or more
28 * ESID/VSID pairs (in SLB/segment registers) and will set up
29 * mappings of one or more ranges of pages to VAs.
30 * We will have the hypervisor set up the ESID->VSID mapping
31 * for the four kernel segments (C-F). With shared processors,
32 * the hypervisor will clear all segment registers and reload
33 * these four whenever the processor is switched from one
34 * partition to another.
35 */
36
37/* The Vsid and Esid identified below will be used by the hypervisor
38 * to set up a memory mapping for part of the load area before giving
39 * control to the Linux kernel. The load area is 64 MB, but this must
40 * not attempt to map the whole load area. The Hashed Page Table may
41 * need to be located within the load area (if the total partition size
42 * is 64 MB), but cannot be mapped. Typically, this should specify
43 * to map half (32 MB) of the load area.
44 *
45 * The hypervisor will set up page table entries for the number of
46 * pages specified.
47 *
48 * In 32-bit mode, the hypervisor will load all four of the
49 * segment registers (identified by the low-order four bits of the
50 * Esid field. In 64-bit mode, the hypervisor will load one SLB
51 * entry to map the Esid to the Vsid.
52*/
53
54#define HvEsidsToMap 2
55#define HvRangesToMap 1
56
57/* Hypervisor initially maps 32MB of the load area */
58#define HvPagesToMap 8192
59
60struct LparMap {
61 u64 xNumberEsids; // Number of ESID/VSID pairs
62 u64 xNumberRanges; // Number of VA ranges to map
63 u64 xSegmentTableOffs; // Page number within load area of seg table
64 u64 xRsvd[5];
65 struct {
66 u64 xKernelEsid; // Esid used to map kernel load
67 u64 xKernelVsid; // Vsid used to map kernel load
68 } xEsids[HvEsidsToMap];
69 struct {
70 u64 xPages; // Number of pages to be mapped
71 u64 xOffset; // Offset from start of load area
72 u64 xVPN; // Virtual Page Number
73 } xRanges[HvRangesToMap];
74};
75
76extern const struct LparMap xLparMap;
77
78#endif /* __ASSEMBLY__ */
79
80/* the fixed address where the LparMap exists */
81#define LPARMAP_PHYS 0x7000
82
83#endif /* _LPARMAP_H */