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
54kvmppc_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 */
75struct 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	ulong scratch2;
83	u8 in_guest;
84	u8 restore_hid5;
85	u8 napping;
86
87#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
88	u8 hwthread_req;
89	u8 hwthread_state;
90	u8 host_ipi;
91	u8 ptid;
92	struct kvm_vcpu *kvm_vcpu;
93	struct kvmppc_vcore *kvm_vcore;
94	unsigned long xics_phys;
95	u32 saved_xirr;
96	u64 dabr;
97	u64 host_mmcr[7];	/* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER */
98	u32 host_pmc[8];
99	u64 host_purr;
100	u64 host_spurr;
101	u64 host_dscr;
102	u64 dec_expires;
103#endif
104#ifdef CONFIG_PPC_BOOK3S_64
105	u64 cfar;
106	u64 ppr;
107	u64 host_fscr;
108#endif
109};
110
111struct kvmppc_book3s_shadow_vcpu {
112	bool in_use;
113	ulong gpr[14];
114	u32 cr;
115	u32 xer;
116	ulong ctr;
117	ulong lr;
118	ulong pc;
119
120	ulong shadow_srr1;
121	ulong fault_dar;
122	u32 fault_dsisr;
123	u32 last_inst;
124
125#ifdef CONFIG_PPC_BOOK3S_32
126	u32     sr[16];			/* Guest SRs */
127
128	struct kvmppc_host_state hstate;
129#endif
130
131#ifdef CONFIG_PPC_BOOK3S_64
132	u8 slb_max;			/* highest used guest slb entry */
133	struct  {
134		u64     esid;
135		u64     vsid;
136	} slb[64];			/* guest SLB */
137	u64 shadow_fscr;
138#endif
139};
140
141#endif /*__ASSEMBLY__ */
142
143/* Values for kvm_state */
144#define KVM_HWTHREAD_IN_KERNEL	0
145#define KVM_HWTHREAD_IN_NAP	1
146#define KVM_HWTHREAD_IN_KVM	2
147
148#endif /* __ASM_KVM_BOOK3S_ASM_H__ */
149