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51b24e34 JK |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License, version 2, as | |
4 | * published by the Free Software Foundation. | |
5 | * | |
6 | * This program is distributed in the hope that it will be useful, | |
7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
9 | * GNU General Public License for more details. | |
10 | * | |
11 | * You should have received a copy of the GNU General Public License | |
12 | * along with this program; if not, write to the Free Software | |
13 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
14 | * | |
15 | * Copyright IBM Corp. 2008 | |
16 | * | |
17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> | |
18 | */ | |
19 | ||
d4834ff9 AG |
20 | #ifndef __POWERPC_KVM_PARA_H__ |
21 | #define __POWERPC_KVM_PARA_H__ | |
51b24e34 JK |
22 | |
23 | #include <linux/types.h> | |
24 | ||
1529ae1b AG |
25 | /* |
26 | * Additions to this struct must only occur at the end, and should be | |
27 | * accompanied by a KVM_MAGIC_FEAT flag to advertise that they are present | |
28 | * (albeit not necessarily relevant to the current target hardware platform). | |
29 | * | |
30 | * Struct fields are always 32 or 64 bit aligned, depending on them being 32 | |
31 | * or 64 bit wide respectively. | |
32 | * | |
33 | * See Documentation/virtual/kvm/ppc-pv.txt | |
34 | */ | |
51b24e34 JK |
35 | struct kvm_vcpu_arch_shared { |
36 | __u64 scratch1; | |
37 | __u64 scratch2; | |
38 | __u64 scratch3; | |
39 | __u64 critical; /* Guest may not get interrupts if == r1 */ | |
40 | __u64 sprg0; | |
41 | __u64 sprg1; | |
42 | __u64 sprg2; | |
43 | __u64 sprg3; | |
44 | __u64 srr0; | |
45 | __u64 srr1; | |
1529ae1b | 46 | __u64 dar; /* dear on BookE */ |
51b24e34 JK |
47 | __u64 msr; |
48 | __u32 dsisr; | |
49 | __u32 int_pending; /* Tells the guest if we have an interrupt */ | |
50 | __u32 sr[16]; | |
1529ae1b AG |
51 | __u32 mas0; |
52 | __u32 mas1; | |
53 | __u64 mas7_3; | |
54 | __u64 mas2; | |
55 | __u32 mas4; | |
56 | __u32 mas6; | |
57 | __u32 esr; | |
58 | __u32 pir; | |
59 | ||
60 | /* | |
61 | * SPRG4-7 are user-readable, so we can only keep these consistent | |
62 | * between the shared area and the real registers when there's an | |
63 | * intervening exit to KVM. This also applies to SPRG3 on some | |
64 | * chips. | |
65 | * | |
66 | * This suffices for access by guest userspace, since in PR-mode | |
67 | * KVM, an exit must occur when changing the guest's MSR[PR]. | |
68 | * If the guest kernel writes to SPRG3-7 via the shared area, it | |
69 | * must also use the shared area for reading while in kernel space. | |
70 | */ | |
71 | __u64 sprg4; | |
72 | __u64 sprg5; | |
73 | __u64 sprg6; | |
74 | __u64 sprg7; | |
51b24e34 JK |
75 | }; |
76 | ||
77 | #define KVM_SC_MAGIC_R0 0x4b564d21 /* "KVM!" */ | |
d4834ff9 AG |
78 | |
79 | #define KVM_HCALL_TOKEN(num) _EV_HCALL_TOKEN(EV_KVM_VENDOR_ID, num) | |
80 | ||
81 | #include <asm/epapr_hcalls.h> | |
51b24e34 JK |
82 | |
83 | #define KVM_FEATURE_MAGIC_PAGE 1 | |
84 | ||
b061808d AG |
85 | /* Magic page flags from host to guest */ |
86 | ||
1529ae1b AG |
87 | #define KVM_MAGIC_FEAT_SR (1 << 0) |
88 | ||
89 | /* MASn, ESR, PIR, and high SPRGs */ | |
90 | #define KVM_MAGIC_FEAT_MAS0_TO_SPRG7 (1 << 1) | |
51b24e34 | 91 | |
b061808d AG |
92 | /* Magic page flags from guest to host */ |
93 | ||
94 | #define MAGIC_PAGE_FLAG_NOT_MAPPED_NX (1 << 0) | |
95 | ||
51b24e34 | 96 | |
d4834ff9 | 97 | #endif /* __POWERPC_KVM_PARA_H__ */ |