1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *
4 * Copyright SUSE Linux Products GmbH 2009
5 *
6 * Authors: Alexander Graf <agraf@suse.de>
7 */
8
9#ifndef __ASM_KVM_BOOK3S_ASM_H__
10#define __ASM_KVM_BOOK3S_ASM_H__
11
12/* XICS ICP register offsets */
13#define XICS_XIRR		4
14#define XICS_MFRR		0xc
15#define XICS_IPI		2	/* interrupt source # for IPIs */
16
17/* LPIDs we support with this build -- runtime limit may be lower */
18#define KVMPPC_NR_LPIDS			(LPID_RSVD + 1)
19
20/* Maximum number of threads per physical core */
21#define MAX_SMT_THREADS		8
22
23/* Maximum number of subcores per physical core */
24#define MAX_SUBCORES		4
25
26#ifdef __ASSEMBLY__
27
28#ifdef CONFIG_KVM_BOOK3S_HANDLER
29
30#include <asm/kvm_asm.h>
31
32.macro DO_KVM intno
33	.if (\intno == BOOK3S_INTERRUPT_SYSTEM_RESET) || \
34	    (\intno == BOOK3S_INTERRUPT_MACHINE_CHECK) || \
35	    (\intno == BOOK3S_INTERRUPT_DATA_STORAGE) || \
36	    (\intno == BOOK3S_INTERRUPT_INST_STORAGE) || \
37	    (\intno == BOOK3S_INTERRUPT_DATA_SEGMENT) || \
38	    (\intno == BOOK3S_INTERRUPT_INST_SEGMENT) || \
39	    (\intno == BOOK3S_INTERRUPT_EXTERNAL) || \
40	    (\intno == BOOK3S_INTERRUPT_EXTERNAL_HV) || \
41	    (\intno == BOOK3S_INTERRUPT_ALIGNMENT) || \
42	    (\intno == BOOK3S_INTERRUPT_PROGRAM) || \
43	    (\intno == BOOK3S_INTERRUPT_FP_UNAVAIL) || \
44	    (\intno == BOOK3S_INTERRUPT_DECREMENTER) || \
45	    (\intno == BOOK3S_INTERRUPT_SYSCALL) || \
46	    (\intno == BOOK3S_INTERRUPT_TRACE) || \
47	    (\intno == BOOK3S_INTERRUPT_PERFMON) || \
48	    (\intno == BOOK3S_INTERRUPT_ALTIVEC) || \
49	    (\intno == BOOK3S_INTERRUPT_VSX)
50
51	b	kvmppc_trampoline_\intno
52kvmppc_resume_\intno:
53
54	.endif
55.endm
56
57#else
58
59.macro DO_KVM intno
60.endm
61
62#endif /* CONFIG_KVM_BOOK3S_HANDLER */
63
64#else  /*__ASSEMBLY__ */
65
66struct kvmppc_vcore;
67
68/* Struct used for coordinating micro-threading (split-core) mode changes */
69struct kvm_split_mode {
70	unsigned long	rpr;
71	unsigned long	pmmar;
72	unsigned long	ldbar;
73	u8		subcore_size;
74	u8		do_nap;
75	u8		napped[MAX_SMT_THREADS];
76	struct kvmppc_vcore *vc[MAX_SUBCORES];
77	/* Bits for changing lpcr on P9 */
78	unsigned long	lpcr_req;
79	unsigned long	lpidr_req;
80	unsigned long	host_lpcr;
81	u32		do_set;
82	u32		do_restore;
83	union {
84		u32	allphases;
85		u8	phase[4];
86	} lpcr_sync;
87};
88
89/*
90 * This struct goes in the PACA on 64-bit processors.  It is used
91 * to store host state that needs to be saved when we enter a guest
92 * and restored when we exit, but isn't specific to any particular
93 * guest or vcpu.  It also has some scratch fields used by the guest
94 * exit code.
95 */
96struct kvmppc_host_state {
97	ulong host_r1;
98	ulong host_r2;
99	ulong host_msr;
100	ulong vmhandler;
101	ulong scratch0;
102	ulong scratch1;
103	ulong scratch2;
104	u8 in_guest;
105	u8 restore_hid5;
106	u8 napping;
107
108#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
109	u8 hwthread_req;
110	u8 hwthread_state;
111	u8 host_ipi;
112	u8 ptid;		/* thread number within subcore when split */
113	u8 tid;			/* thread number within whole core */
114	u8 fake_suspend;
115	struct kvm_vcpu *kvm_vcpu;
116	struct kvmppc_vcore *kvm_vcore;
117	void __iomem *xics_phys;
118	void __iomem *xive_tima_phys;
119	void __iomem *xive_tima_virt;
120	u32 saved_xirr;
121	u64 dabr;
122	u64 host_mmcr[10];	/* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER, MMCR3, SIER2/3 */
123	u32 host_pmc[8];
124	u64 host_purr;
125	u64 host_spurr;
126	u64 host_dscr;
127	u64 dec_expires;
128	struct kvm_split_mode *kvm_split_mode;
129#endif
130#ifdef CONFIG_PPC_BOOK3S_64
131	u64 cfar;
132	u64 ppr;
133	u64 host_fscr;
134#endif
135};
136
137struct kvmppc_book3s_shadow_vcpu {
138	bool in_use;
139	ulong gpr[14];
140	u32 cr;
141	ulong xer;
142	ulong ctr;
143	ulong lr;
144	ulong pc;
145
146	ulong shadow_srr1;
147	ulong fault_dar;
148	u32 fault_dsisr;
149	u32 last_inst;
150
151#ifdef CONFIG_PPC_BOOK3S_32
152	u32     sr[16];			/* Guest SRs */
153
154	struct kvmppc_host_state hstate;
155#endif
156
157#ifdef CONFIG_PPC_BOOK3S_64
158	u8 slb_max;			/* highest used guest slb entry */
159	struct  {
160		u64     esid;
161		u64     vsid;
162	} slb[64];			/* guest SLB */
163	u64 shadow_fscr;
164#endif
165};
166
167#endif /*__ASSEMBLY__ */
168
169/* Values for kvm_state */
170#define KVM_HWTHREAD_IN_KERNEL	0
171#define KVM_HWTHREAD_IN_IDLE	1
172#define KVM_HWTHREAD_IN_KVM	2
173
174#endif /* __ASM_KVM_BOOK3S_ASM_H__ */
175