arch/powerpc/include/asm/kvm_book3s.h - kernel/skids - Git at Google

 /*
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License, version 2, as
  * published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
  * Copyright SUSE Linux Products GmbH 2009
  *
  * Authors: Alexander Graf <agraf@suse.de>
  */

 #ifndef __ASM_KVM_BOOK3S_H__
 #define __ASM_KVM_BOOK3S_H__

 #include <linux/types.h>
 #include <linux/kvm_host.h>
 #include <asm/kvm_book3s_asm.h>

 struct kvmppc_slb {
 	u64 esid;
 	u64 vsid;
 	u64 orige;
 	u64 origv;
 	bool valid	: 1;
 	bool Ks		: 1;
 	bool Kp		: 1;
 	bool nx		: 1;
 	bool large	: 1;	/* PTEs are 16MB */
 	bool tb		: 1;	/* 1TB segment */
 	bool class	: 1;
 };

 struct kvmppc_sr {
 	u32 raw;
 	u32 vsid;
 	bool Ks		: 1;
 	bool Kp		: 1;
 	bool nx		: 1;
 	bool valid	: 1;
 };

 struct kvmppc_bat {
 	u64 raw;
 	u32 bepi;
 	u32 bepi_mask;
 	u32 brpn;
 	u8 wimg;
 	u8 pp;
 	bool vs		: 1;
 	bool vp		: 1;
 };

 struct kvmppc_sid_map {
 	u64 guest_vsid;
 	u64 guest_esid;
 	u64 host_vsid;
 	bool valid	: 1;
 };

 #define SID_MAP_BITS    9
 #define SID_MAP_NUM     (1 << SID_MAP_BITS)
 #define SID_MAP_MASK    (SID_MAP_NUM - 1)

 struct kvmppc_vcpu_book3s {
 	struct kvm_vcpu vcpu;
 	struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
 	struct kvmppc_sid_map sid_map[SID_MAP_NUM];
 	struct kvmppc_slb slb[64];
 	struct {
 		u64 esid;
 		u64 vsid;
 	} slb_shadow[64];
 	u8 slb_shadow_max;
 	struct kvmppc_sr sr[16];
 	struct kvmppc_bat ibat[8];
 	struct kvmppc_bat dbat[8];
 	u64 hid[6];
 	u64 gqr[8];
 	int slb_nr;
 	u32 dsisr;
 	u64 sdr1;
 	u64 hior;
 	u64 msr_mask;
 	u64 vsid_first;
 	u64 vsid_next;
 	u64 vsid_max;
 	int context_id;
 	ulong prog_flags; /* flags to inject when giving a 700 trap */
 };

 #define CONTEXT_HOST		0
 #define CONTEXT_GUEST		1
 #define CONTEXT_GUEST_END	2

 #define VSID_REAL	0x1fffffffffc00000ULL
 #define VSID_BAT	0x1fffffffffb00000ULL
 #define VSID_REAL_DR	0x2000000000000000ULL
 #define VSID_REAL_IR	0x4000000000000000ULL
 #define VSID_PR		0x8000000000000000ULL

 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
 extern struct kvmppc_pte *kvmppc_mmu_find_pte(struct kvm_vcpu *vcpu, u64 ea, bool data);
 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
 			   bool upper, u32 val);
 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);

 extern u32 kvmppc_trampoline_lowmem;
 extern u32 kvmppc_trampoline_enter;
 extern void kvmppc_rmcall(ulong srr0, ulong srr1);
 extern void kvmppc_load_up_fpu(void);
 extern void kvmppc_load_up_altivec(void);
 extern void kvmppc_load_up_vsx(void);
 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);

 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
 {
 	return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
 }

 static inline ulong dsisr(void)
 {
 	ulong r;
 	asm ( "mfdsisr %0 " : "=r" (r) );
 	return r;
 }

 extern void kvm_return_point(void);
 static inline struct kvmppc_book3s_shadow_vcpu *to_svcpu(struct kvm_vcpu *vcpu);

 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
 {
 	if ( num < 14 ) {
 		to_svcpu(vcpu)->gpr[num] = val;
 		to_book3s(vcpu)->shadow_vcpu->gpr[num] = val;
 	} else
 		vcpu->arch.gpr[num] = val;
 }

 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
 {
 	if ( num < 14 )
 		return to_svcpu(vcpu)->gpr[num];
 	else
 		return vcpu->arch.gpr[num];
 }

 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
 {
 	to_svcpu(vcpu)->cr = val;
 	to_book3s(vcpu)->shadow_vcpu->cr = val;
 }

 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
 {
 	return to_svcpu(vcpu)->cr;
 }

 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
 {
 	to_svcpu(vcpu)->xer = val;
 	to_book3s(vcpu)->shadow_vcpu->xer = val;
 }

 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
 {
 	return to_svcpu(vcpu)->xer;
 }

 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
 {
 	to_svcpu(vcpu)->ctr = val;
 }

 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
 {
 	return to_svcpu(vcpu)->ctr;
 }

 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
 {
 	to_svcpu(vcpu)->lr = val;
 }

 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
 {
 	return to_svcpu(vcpu)->lr;
 }

 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
 {
 	to_svcpu(vcpu)->pc = val;
 }

 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
 {
 	return to_svcpu(vcpu)->pc;
 }

 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
 {
 	ulong pc = kvmppc_get_pc(vcpu);
 	struct kvmppc_book3s_shadow_vcpu *svcpu = to_svcpu(vcpu);

 	/* Load the instruction manually if it failed to do so in the
 	 * exit path */
 	if (svcpu->last_inst == KVM_INST_FETCH_FAILED)
 		kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false);

 	return svcpu->last_inst;
 }

 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
 {
 	return to_svcpu(vcpu)->fault_dar;
 }

 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
  * instruction for the OSI hypercalls */
 #define OSI_SC_MAGIC_R3			0x113724FA
 #define OSI_SC_MAGIC_R4			0x77810F9B

 #define INS_DCBZ			0x7c0007ec

 /* Also add subarch specific defines */

 #ifdef CONFIG_PPC_BOOK3S_32
 #include <asm/kvm_book3s_32.h>
 #else
 #include <asm/kvm_book3s_64.h>
 #endif

 #endif /* __ASM_KVM_BOOK3S_H__ */
	/*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License, version 2, as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	*
	* Copyright SUSE Linux Products GmbH 2009
	*
	* Authors: Alexander Graf <agraf@suse.de>
	*/

	#ifndef __ASM_KVM_BOOK3S_H__
	#define __ASM_KVM_BOOK3S_H__

	#include <linux/types.h>
	#include <linux/kvm_host.h>
	#include <asm/kvm_book3s_asm.h>

	struct kvmppc_slb {
	u64 esid;
	u64 vsid;
	u64 orige;
	u64 origv;
	bool valid : 1;
	bool Ks : 1;
	bool Kp : 1;
	bool nx : 1;
	bool large : 1; /* PTEs are 16MB */
	bool tb : 1; /* 1TB segment */
	bool class : 1;
	};

	struct kvmppc_sr {
	u32 raw;
	u32 vsid;
	bool Ks : 1;
	bool Kp : 1;
	bool nx : 1;
	bool valid : 1;
	};

	struct kvmppc_bat {
	u64 raw;
	u32 bepi;
	u32 bepi_mask;
	u32 brpn;
	u8 wimg;
	u8 pp;
	bool vs : 1;
	bool vp : 1;
	};

	struct kvmppc_sid_map {
	u64 guest_vsid;
	u64 guest_esid;
	u64 host_vsid;
	bool valid : 1;
	};

	#define SID_MAP_BITS 9
	#define SID_MAP_NUM (1 << SID_MAP_BITS)
	#define SID_MAP_MASK (SID_MAP_NUM - 1)

	struct kvmppc_vcpu_book3s {
	struct kvm_vcpu vcpu;
	struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
	struct kvmppc_sid_map sid_map[SID_MAP_NUM];
	struct kvmppc_slb slb[64];
	struct {
	u64 esid;
	u64 vsid;
	} slb_shadow[64];
	u8 slb_shadow_max;
	struct kvmppc_sr sr[16];
	struct kvmppc_bat ibat[8];
	struct kvmppc_bat dbat[8];
	u64 hid[6];
	u64 gqr[8];
	int slb_nr;
	u32 dsisr;
	u64 sdr1;
	u64 hior;
	u64 msr_mask;
	u64 vsid_first;
	u64 vsid_next;
	u64 vsid_max;
	int context_id;
	ulong prog_flags; /* flags to inject when giving a 700 trap */
	};

	#define CONTEXT_HOST 0
	#define CONTEXT_GUEST 1
	#define CONTEXT_GUEST_END 2

	#define VSID_REAL 0x1fffffffffc00000ULL
	#define VSID_BAT 0x1fffffffffb00000ULL
	#define VSID_REAL_DR 0x2000000000000000ULL
	#define VSID_REAL_IR 0x4000000000000000ULL
	#define VSID_PR 0x8000000000000000ULL

	extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
	extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
	extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
	extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
	extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
	extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
	extern int kvmppc_mmu_map_page(struct kvm_vcpu vcpu, struct kvmppc_pte pte);
	extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
	extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
	extern struct kvmppc_pte kvmppc_mmu_find_pte(struct kvm_vcpu vcpu, u64 ea, bool data);
	extern int kvmppc_ld(struct kvm_vcpu vcpu, ulong eaddr, int size, void *ptr, bool data);
	extern int kvmppc_st(struct kvm_vcpu vcpu, ulong eaddr, int size, void *ptr, bool data);
	extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
	extern void kvmppc_set_bat(struct kvm_vcpu vcpu, struct kvmppc_bat bat,
	bool upper, u32 val);
	extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
	extern int kvmppc_emulate_paired_single(struct kvm_run run, struct kvm_vcpu vcpu);

	extern u32 kvmppc_trampoline_lowmem;
	extern u32 kvmppc_trampoline_enter;
	extern void kvmppc_rmcall(ulong srr0, ulong srr1);
	extern void kvmppc_load_up_fpu(void);
	extern void kvmppc_load_up_altivec(void);
	extern void kvmppc_load_up_vsx(void);
	extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
	extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);

	static inline struct kvmppc_vcpu_book3s to_book3s(struct kvm_vcpu vcpu)
	{
	return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
	}

	static inline ulong dsisr(void)
	{
	ulong r;
	asm ( "mfdsisr %0 " : "=r" (r) );
	return r;
	}

	extern void kvm_return_point(void);
	static inline struct kvmppc_book3s_shadow_vcpu to_svcpu(struct kvm_vcpu vcpu);

	static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
	{
	if ( num < 14 ) {
	to_svcpu(vcpu)->gpr[num] = val;
	to_book3s(vcpu)->shadow_vcpu->gpr[num] = val;
	} else
	vcpu->arch.gpr[num] = val;
	}

	static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
	{
	if ( num < 14 )
	return to_svcpu(vcpu)->gpr[num];
	else
	return vcpu->arch.gpr[num];
	}

	static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
	{
	to_svcpu(vcpu)->cr = val;
	to_book3s(vcpu)->shadow_vcpu->cr = val;
	}

	static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
	{
	return to_svcpu(vcpu)->cr;
	}

	static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
	{
	to_svcpu(vcpu)->xer = val;
	to_book3s(vcpu)->shadow_vcpu->xer = val;
	}

	static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
	{
	return to_svcpu(vcpu)->xer;
	}

	static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
	{
	to_svcpu(vcpu)->ctr = val;
	}

	static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
	{
	return to_svcpu(vcpu)->ctr;
	}

	static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
	{
	to_svcpu(vcpu)->lr = val;
	}

	static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
	{
	return to_svcpu(vcpu)->lr;
	}

	static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
	{
	to_svcpu(vcpu)->pc = val;
	}

	static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
	{
	return to_svcpu(vcpu)->pc;
	}

	static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
	{
	ulong pc = kvmppc_get_pc(vcpu);
	struct kvmppc_book3s_shadow_vcpu *svcpu = to_svcpu(vcpu);

	/* Load the instruction manually if it failed to do so in the
	* exit path */
	if (svcpu->last_inst == KVM_INST_FETCH_FAILED)
	kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false);

	return svcpu->last_inst;
	}

	static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
	{
	return to_svcpu(vcpu)->fault_dar;
	}

	/* Magic register values loaded into r3 and r4 before the 'sc' assembly
	* instruction for the OSI hypercalls */
	#define OSI_SC_MAGIC_R3 0x113724FA
	#define OSI_SC_MAGIC_R4 0x77810F9B

	#define INS_DCBZ 0x7c0007ec

	/* Also add subarch specific defines */

	#ifdef CONFIG_PPC_BOOK3S_32
	#include <asm/kvm_book3s_32.h>
	#else
	#include <asm/kvm_book3s_64.h>
	#endif

	#endif /* __ASM_KVM_BOOK3S_H__ */