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 SUSE Linux Products GmbH 2009
16  *
17  * Authors: Alexander Graf <agraf@suse.de>
18  */
19 
20 #ifndef __ASM_KVM_BOOK3S_ASM_H__
21 #define __ASM_KVM_BOOK3S_ASM_H__
22 
23 /* XICS ICP register offsets */
24 #define XICS_XIRR		4
25 #define XICS_MFRR		0xc
26 #define XICS_IPI		2	/* interrupt source # for IPIs */
27 
28 #ifdef __ASSEMBLY__
29 
30 #ifdef CONFIG_KVM_BOOK3S_HANDLER
31 
32 #include <asm/kvm_asm.h>
33 
34 .macro DO_KVM intno
35 	.if (\intno == BOOK3S_INTERRUPT_SYSTEM_RESET) || \
36 	    (\intno == BOOK3S_INTERRUPT_MACHINE_CHECK) || \
37 	    (\intno == BOOK3S_INTERRUPT_DATA_STORAGE) || \
38 	    (\intno == BOOK3S_INTERRUPT_INST_STORAGE) || \
39 	    (\intno == BOOK3S_INTERRUPT_DATA_SEGMENT) || \
40 	    (\intno == BOOK3S_INTERRUPT_INST_SEGMENT) || \
41 	    (\intno == BOOK3S_INTERRUPT_EXTERNAL) || \
42 	    (\intno == BOOK3S_INTERRUPT_EXTERNAL_HV) || \
43 	    (\intno == BOOK3S_INTERRUPT_ALIGNMENT) || \
44 	    (\intno == BOOK3S_INTERRUPT_PROGRAM) || \
45 	    (\intno == BOOK3S_INTERRUPT_FP_UNAVAIL) || \
46 	    (\intno == BOOK3S_INTERRUPT_DECREMENTER) || \
47 	    (\intno == BOOK3S_INTERRUPT_SYSCALL) || \
48 	    (\intno == BOOK3S_INTERRUPT_TRACE) || \
49 	    (\intno == BOOK3S_INTERRUPT_PERFMON) || \
50 	    (\intno == BOOK3S_INTERRUPT_ALTIVEC) || \
51 	    (\intno == BOOK3S_INTERRUPT_VSX)
52 
53 	b	kvmppc_trampoline_\intno
54 kvmppc_resume_\intno:
55 
56 	.endif
57 .endm
58 
59 #else
60 
61 .macro DO_KVM intno
62 .endm
63 
64 #endif /* CONFIG_KVM_BOOK3S_HANDLER */
65 
66 #else  /*__ASSEMBLY__ */
67 
68 /*
69  * This struct goes in the PACA on 64-bit processors.  It is used
70  * to store host state that needs to be saved when we enter a guest
71  * and restored when we exit, but isn't specific to any particular
72  * guest or vcpu.  It also has some scratch fields used by the guest
73  * exit code.
74  */
75 struct kvmppc_host_state {
76 	ulong host_r1;
77 	ulong host_r2;
78 	ulong host_msr;
79 	ulong vmhandler;
80 	ulong scratch0;
81 	ulong scratch1;
82 	u8 in_guest;
83 	u8 restore_hid5;
84 	u8 napping;
85 
86 #ifdef CONFIG_KVM_BOOK3S_64_HV
87 	u8 hwthread_req;
88 	u8 hwthread_state;
89 	u8 host_ipi;
90 	struct kvm_vcpu *kvm_vcpu;
91 	struct kvmppc_vcore *kvm_vcore;
92 	unsigned long xics_phys;
93 	u32 saved_xirr;
94 	u64 dabr;
95 	u64 host_mmcr[3];
96 	u32 host_pmc[8];
97 	u64 host_purr;
98 	u64 host_spurr;
99 	u64 host_dscr;
100 	u64 dec_expires;
101 #endif
102 #ifdef CONFIG_PPC_BOOK3S_64
103 	u64 cfar;
104 #endif
105 };
106 
107 struct kvmppc_book3s_shadow_vcpu {
108 	ulong gpr[14];
109 	u32 cr;
110 	u32 xer;
111 
112 	u32 fault_dsisr;
113 	u32 last_inst;
114 	ulong ctr;
115 	ulong lr;
116 	ulong pc;
117 	ulong shadow_srr1;
118 	ulong fault_dar;
119 
120 #ifdef CONFIG_PPC_BOOK3S_32
121 	u32     sr[16];			/* Guest SRs */
122 
123 	struct kvmppc_host_state hstate;
124 #endif
125 
126 #ifdef CONFIG_PPC_BOOK3S_64
127 	u8 slb_max;			/* highest used guest slb entry */
128 	struct  {
129 		u64     esid;
130 		u64     vsid;
131 	} slb[64];			/* guest SLB */
132 #endif
133 };
134 
135 #endif /*__ASSEMBLY__ */
136 
137 /* Values for kvm_state */
138 #define KVM_HWTHREAD_IN_KERNEL	0
139 #define KVM_HWTHREAD_IN_NAP	1
140 #define KVM_HWTHREAD_IN_KVM	2
141 
142 #endif /* __ASM_KVM_BOOK3S_ASM_H__ */
143