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Commit 6df8d3fc authored by Bharat Bhushan's avatar Bharat Bhushan Committed by Alexander Graf
Browse files

booke: Added ONE_REG interface for IAC/DAC debug registers 



IAC/DAC are defined as 32 bit while they are 64 bit wide. So ONE_REG
interface is added to set/get them.

Signed-off-by: default avatarBharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent f61c94bb

arch/powerpc/include/asm/kvm.h

+12 −0
Original line number Diff line number Diff line
@@ -221,6 +221,12 @@ struct kvm_sregs { 


			__u32 dbsr;	/* KVM_SREGS_E_UPDATE_DBSR */

			__u32 dbcr[3];

			/*

			 * iac/dac registers are 64bit wide, while this API

			 * interface provides only lower 32 bits on 64 bit

			 * processors. ONE_REG interface is added for 64bit

			 * iac/dac registers.

			 */

			__u32 iac[4];

			__u32 dac[2];

			__u32 dvc[2];
@@ -326,5 +332,11 @@ struct kvm_book3e_206_tlb_params { 
};



#define KVM_REG_PPC_HIOR	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x1)

#define KVM_REG_PPC_IAC1	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x2)

#define KVM_REG_PPC_IAC2	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x3)

#define KVM_REG_PPC_IAC3	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x4)

#define KVM_REG_PPC_IAC4	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x5)

#define KVM_REG_PPC_DAC1	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x6)

#define KVM_REG_PPC_DAC2	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x7)



#endif /* __LINUX_KVM_POWERPC_H */

arch/powerpc/include/asm/kvm_host.h

+22 −2
Original line number Diff line number Diff line
@@ -346,6 +346,27 @@ struct kvmppc_slb { 
	bool class	: 1;

};



# ifdef CONFIG_PPC_FSL_BOOK3E

#define KVMPPC_BOOKE_IAC_NUM	2

#define KVMPPC_BOOKE_DAC_NUM	2

# else

#define KVMPPC_BOOKE_IAC_NUM	4

#define KVMPPC_BOOKE_DAC_NUM	2

# endif

#define KVMPPC_BOOKE_MAX_IAC	4

#define KVMPPC_BOOKE_MAX_DAC	2



struct kvmppc_booke_debug_reg {

	u32 dbcr0;

	u32 dbcr1;

	u32 dbcr2;

#ifdef CONFIG_KVM_E500MC

	u32 dbcr4;

#endif

	u64 iac[KVMPPC_BOOKE_MAX_IAC];

	u64 dac[KVMPPC_BOOKE_MAX_DAC];

};



struct kvm_vcpu_arch {

	ulong host_stack;

	u32 host_pid;
@@ -440,8 +461,6 @@ struct kvm_vcpu_arch { 


	u32 ccr0;

	u32 ccr1;

	u32 dbcr0;

	u32 dbcr1;

	u32 dbsr;



	u64 mmcr[3];
@@ -476,6 +495,7 @@ struct kvm_vcpu_arch { 
	u32 tlbcfg[4];

	u32 mmucfg;

	u32 epr;

	struct kvmppc_booke_debug_reg dbg_reg;

#endif

	gpa_t paddr_accessed;

	gva_t vaddr_accessed;

arch/powerpc/kvm/booke.c

+46 −2
Original line number Diff line number Diff line
@@ -1351,12 +1351,56 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 


int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)

{

	return -EINVAL;

	int r = -EINVAL;



	switch (reg->id) {

	case KVM_REG_PPC_IAC1:

	case KVM_REG_PPC_IAC2:

	case KVM_REG_PPC_IAC3:

	case KVM_REG_PPC_IAC4: {

		int iac = reg->id - KVM_REG_PPC_IAC1;

		r = copy_to_user((u64 __user *)(long)reg->addr,

				 &vcpu->arch.dbg_reg.iac[iac], sizeof(u64));

		break;

	}

	case KVM_REG_PPC_DAC1:

	case KVM_REG_PPC_DAC2: {

		int dac = reg->id - KVM_REG_PPC_DAC1;

		r = copy_to_user((u64 __user *)(long)reg->addr,

				 &vcpu->arch.dbg_reg.dac[dac], sizeof(u64));

		break;

	}

	default:

		break;

	}

	return r;

}



int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)

{

	return -EINVAL;

	int r = -EINVAL;



	switch (reg->id) {

	case KVM_REG_PPC_IAC1:

	case KVM_REG_PPC_IAC2:

	case KVM_REG_PPC_IAC3:

	case KVM_REG_PPC_IAC4: {

		int iac = reg->id - KVM_REG_PPC_IAC1;

		r = copy_from_user(&vcpu->arch.dbg_reg.iac[iac],

			     (u64 __user *)(long)reg->addr, sizeof(u64));

		break;

	}

	case KVM_REG_PPC_DAC1:

	case KVM_REG_PPC_DAC2: {

		int dac = reg->id - KVM_REG_PPC_DAC1;

		r = copy_from_user(&vcpu->arch.dbg_reg.dac[dac],

			     (u64 __user *)(long)reg->addr, sizeof(u64));

		break;

	}

	default:

		break;

	}

	return r;

}



int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)

arch/powerpc/kvm/booke_emulate.c

+4 −4
Original line number Diff line number Diff line
@@ -133,10 +133,10 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) 
		vcpu->arch.csrr1 = spr_val;

		break;

	case SPRN_DBCR0:

		vcpu->arch.dbcr0 = spr_val;

		vcpu->arch.dbg_reg.dbcr0 = spr_val;

		break;

	case SPRN_DBCR1:

		vcpu->arch.dbcr1 = spr_val;

		vcpu->arch.dbg_reg.dbcr1 = spr_val;

		break;

	case SPRN_DBSR:

		vcpu->arch.dbsr &= ~spr_val;
@@ -266,10 +266,10 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val) 
		*spr_val = vcpu->arch.csrr1;

		break;

	case SPRN_DBCR0:

		*spr_val = vcpu->arch.dbcr0;

		*spr_val = vcpu->arch.dbg_reg.dbcr0;

		break;

	case SPRN_DBCR1:

		*spr_val = vcpu->arch.dbcr1;

		*spr_val = vcpu->arch.dbg_reg.dbcr1;

		break;

	case SPRN_DBSR:

		*spr_val = vcpu->arch.dbsr;