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