/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *
 * Copyright SUSE Linux Products GmbH 2009
 *
 * Authors: Alexander Graf <agraf@suse.de>
 */

#ifndef __ASM_KVM_BOOK3S_ASM_H__
#define __ASM_KVM_BOOK3S_ASM_H__

/* XICS ICP register offsets */
#define XICS_XIRR               4
#define XICS_MFRR               0xc
#define XICS_IPI                2       /* interrupt source # for IPIs */

/* Maximum number of threads per physical core */
#define MAX_SMT_THREADS         8

/* Maximum number of subcores per physical core */
#define MAX_SUBCORES            4

#ifdef __ASSEMBLER__

#ifdef CONFIG_KVM_BOOK3S_HANDLER

#include <asm/kvm_asm.h>

.macro DO_KVM intno
        .if (\intno == BOOK3S_INTERRUPT_SYSTEM_RESET) || \
            (\intno == BOOK3S_INTERRUPT_MACHINE_CHECK) || \
            (\intno == BOOK3S_INTERRUPT_DATA_STORAGE) || \
            (\intno == BOOK3S_INTERRUPT_INST_STORAGE) || \
            (\intno == BOOK3S_INTERRUPT_DATA_SEGMENT) || \
            (\intno == BOOK3S_INTERRUPT_INST_SEGMENT) || \
            (\intno == BOOK3S_INTERRUPT_EXTERNAL) || \
            (\intno == BOOK3S_INTERRUPT_EXTERNAL_HV) || \
            (\intno == BOOK3S_INTERRUPT_ALIGNMENT) || \
            (\intno == BOOK3S_INTERRUPT_PROGRAM) || \
            (\intno == BOOK3S_INTERRUPT_FP_UNAVAIL) || \
            (\intno == BOOK3S_INTERRUPT_DECREMENTER) || \
            (\intno == BOOK3S_INTERRUPT_SYSCALL) || \
            (\intno == BOOK3S_INTERRUPT_TRACE) || \
            (\intno == BOOK3S_INTERRUPT_PERFMON) || \
            (\intno == BOOK3S_INTERRUPT_ALTIVEC) || \
            (\intno == BOOK3S_INTERRUPT_VSX)

        b       kvmppc_trampoline_\intno
kvmppc_resume_\intno:

        .endif
.endm

#else

.macro DO_KVM intno
.endm

#endif /* CONFIG_KVM_BOOK3S_HANDLER */

#else  /*__ASSEMBLER__ */

struct kvmppc_vcore;

/* Struct used for coordinating micro-threading (split-core) mode changes */
struct kvm_split_mode {
        unsigned long   rpr;
        unsigned long   pmmar;
        unsigned long   ldbar;
        u8              subcore_size;
        u8              do_nap;
        u8              napped[MAX_SMT_THREADS];
        struct kvmppc_vcore *vc[MAX_SUBCORES];
};

/*
 * This struct goes in the PACA on 64-bit processors.  It is used
 * to store host state that needs to be saved when we enter a guest
 * and restored when we exit, but isn't specific to any particular
 * guest or vcpu.  It also has some scratch fields used by the guest
 * exit code.
 */
struct kvmppc_host_state {
        ulong host_r1;
        ulong host_r2;
        ulong host_msr;
        ulong vmhandler;
        ulong scratch0;
        ulong scratch1;
        ulong scratch2;
        u8 in_guest;
        u8 restore_hid5;
        u8 napping;

#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
        u8 hwthread_req;
        u8 hwthread_state;
        u8 host_ipi;
        u8 ptid;                /* thread number within subcore when split */
        u8 fake_suspend;
        struct kvm_vcpu *kvm_vcpu;
        struct kvmppc_vcore *kvm_vcore;
        void __iomem *xics_phys;
        void __iomem *xive_tima_phys;
        void __iomem *xive_tima_virt;
        u32 saved_xirr;
        u64 dabr;
        u64 host_mmcr[7];       /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER */
        u32 host_pmc[8];
        u64 host_purr;
        u64 host_spurr;
        u64 host_dscr;
        u64 dec_expires;
        struct kvm_split_mode *kvm_split_mode;
#endif
#ifdef CONFIG_PPC_BOOK3S_64
        u64 cfar;
        u64 ppr;
        u64 host_fscr;
#endif
};

struct kvmppc_book3s_shadow_vcpu {
        bool in_use;
        ulong gpr[14];
        u32 cr;
        ulong xer;
        ulong ctr;
        ulong lr;
        ulong pc;

        ulong shadow_srr1;
        ulong fault_dar;
        u32 fault_dsisr;
        u32 last_inst;

#ifdef CONFIG_PPC_BOOK3S_32
        u32     sr[16];                 /* Guest SRs */

        struct kvmppc_host_state hstate;
#endif

#ifdef CONFIG_PPC_BOOK3S_64
        u8 slb_max;                     /* highest used guest slb entry */
        struct  {
                u64     esid;
                u64     vsid;
        } slb[64];                      /* guest SLB */
        u64 shadow_fscr;
#endif
};

#endif /*__ASSEMBLER__ */

/* Values for kvm_state */
#define KVM_HWTHREAD_IN_KERNEL  0
#define KVM_HWTHREAD_IN_IDLE    1
#define KVM_HWTHREAD_IN_KVM     2

#endif /* __ASM_KVM_BOOK3S_ASM_H__ */