| David Howells | c3617f7 | 2012-10-09 09:47:26 +0100 | [diff] [blame^] | 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 | |
| 20 | #ifndef _UAPI__POWERPC_KVM_PARA_H__ |
| 21 | #define _UAPI__POWERPC_KVM_PARA_H__ |
| 22 | |
| 23 | #include <linux/types.h> |
| 24 | |
| 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 | */ |
| 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; |
| 46 | __u64 dar; /* dear on BookE */ |
| 47 | __u64 msr; |
| 48 | __u32 dsisr; |
| 49 | __u32 int_pending; /* Tells the guest if we have an interrupt */ |
| 50 | __u32 sr[16]; |
| 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; |
| 75 | }; |
| 76 | |
| 77 | #define KVM_SC_MAGIC_R0 0x4b564d21 /* "KVM!" */ |
| 78 | #define HC_VENDOR_KVM (42 << 16) |
| 79 | #define HC_EV_SUCCESS 0 |
| 80 | #define HC_EV_UNIMPLEMENTED 12 |
| 81 | |
| 82 | #define KVM_FEATURE_MAGIC_PAGE 1 |
| 83 | |
| 84 | #define KVM_MAGIC_FEAT_SR (1 << 0) |
| 85 | |
| 86 | /* MASn, ESR, PIR, and high SPRGs */ |
| 87 | #define KVM_MAGIC_FEAT_MAS0_TO_SPRG7 (1 << 1) |
| 88 | |
| 89 | |
| 90 | #endif /* _UAPI__POWERPC_KVM_PARA_H__ */ |