From: Mihai Caraman Date: Thu, 11 Apr 2013 00:03:08 +0000 (+0000) Subject: KVM: PPC: e500: Expose MMU registers via ONE_REG X-Git-Tag: v3.10-rc1~87^2~13^2~35 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a85d2aa23e51a9460e034e283da2513930b4f183;p=platform%2Fkernel%2Flinux-exynos.git KVM: PPC: e500: Expose MMU registers via ONE_REG MMU registers were exposed to user-space using sregs interface. Add them to ONE_REG interface using kvmppc_get_one_reg/kvmppc_set_one_reg delegation mechanism. Signed-off-by: Mihai Caraman Signed-off-by: Alexander Graf --- diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 976eb65..1a76663 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -1792,6 +1792,17 @@ registers, find a list below: PPC | KVM_REG_PPC_TSR | 32 PPC | KVM_REG_PPC_OR_TSR | 32 PPC | KVM_REG_PPC_CLEAR_TSR | 32 + PPC | KVM_REG_PPC_MAS0 | 32 + PPC | KVM_REG_PPC_MAS1 | 32 + PPC | KVM_REG_PPC_MAS2 | 64 + PPC | KVM_REG_PPC_MAS7_3 | 64 + PPC | KVM_REG_PPC_MAS4 | 32 + PPC | KVM_REG_PPC_MAS6 | 32 + PPC | KVM_REG_PPC_MMUCFG | 32 + PPC | KVM_REG_PPC_TLB0CFG | 32 + PPC | KVM_REG_PPC_TLB1CFG | 32 + PPC | KVM_REG_PPC_TLB2CFG | 32 + PPC | KVM_REG_PPC_TLB3CFG | 32 ARM registers are mapped using the lower 32 bits. The upper 16 of that is the register group type, or coprocessor number: diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index c0c38ed..0c5cffb 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -449,4 +449,21 @@ struct kvm_get_htab_header { /* Debugging: Special instruction for software breakpoint */ #define KVM_REG_PPC_DEBUG_INST (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x8b) +/* MMU registers */ +#define KVM_REG_PPC_MAS0 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x8c) +#define KVM_REG_PPC_MAS1 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x8d) +#define KVM_REG_PPC_MAS2 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x8e) +#define KVM_REG_PPC_MAS7_3 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x8f) +#define KVM_REG_PPC_MAS4 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x90) +#define KVM_REG_PPC_MAS6 (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x91) +#define KVM_REG_PPC_MMUCFG (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x92) +/* + * TLBnCFG fields TLBnCFG_N_ENTRY and TLBnCFG_ASSOC can be changed only using + * KVM_CAP_SW_TLB ioctl + */ +#define KVM_REG_PPC_TLB0CFG (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x93) +#define KVM_REG_PPC_TLB1CFG (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x94) +#define KVM_REG_PPC_TLB2CFG (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x95) +#define KVM_REG_PPC_TLB3CFG (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x96) + #endif /* __LINUX_KVM_POWERPC_H */ diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c index 576010f..ce6b73c 100644 --- a/arch/powerpc/kvm/e500.c +++ b/arch/powerpc/kvm/e500.c @@ -428,13 +428,15 @@ int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *val) { - return -EINVAL; + int r = kvmppc_get_one_reg_e500_tlb(vcpu, id, val); + return r; } int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *val) { - return -EINVAL; + int r = kvmppc_get_one_reg_e500_tlb(vcpu, id, val); + return r; } struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h index 33db48a..b73ca7a 100644 --- a/arch/powerpc/kvm/e500.h +++ b/arch/powerpc/kvm/e500.h @@ -131,6 +131,10 @@ void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500); void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); +int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, + union kvmppc_one_reg *val); +int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, + union kvmppc_one_reg *val); #ifdef CONFIG_KVM_E500V2 unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500, diff --git a/arch/powerpc/kvm/e500_mmu.c b/arch/powerpc/kvm/e500_mmu.c index 5c44759..44f7762 100644 --- a/arch/powerpc/kvm/e500_mmu.c +++ b/arch/powerpc/kvm/e500_mmu.c @@ -596,6 +596,100 @@ int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) return 0; } +int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, + union kvmppc_one_reg *val) +{ + int r = 0; + long int i; + + switch (id) { + case KVM_REG_PPC_MAS0: + *val = get_reg_val(id, vcpu->arch.shared->mas0); + break; + case KVM_REG_PPC_MAS1: + *val = get_reg_val(id, vcpu->arch.shared->mas1); + break; + case KVM_REG_PPC_MAS2: + *val = get_reg_val(id, vcpu->arch.shared->mas2); + break; + case KVM_REG_PPC_MAS7_3: + *val = get_reg_val(id, vcpu->arch.shared->mas7_3); + break; + case KVM_REG_PPC_MAS4: + *val = get_reg_val(id, vcpu->arch.shared->mas4); + break; + case KVM_REG_PPC_MAS6: + *val = get_reg_val(id, vcpu->arch.shared->mas6); + break; + case KVM_REG_PPC_MMUCFG: + *val = get_reg_val(id, vcpu->arch.mmucfg); + break; + case KVM_REG_PPC_TLB0CFG: + case KVM_REG_PPC_TLB1CFG: + case KVM_REG_PPC_TLB2CFG: + case KVM_REG_PPC_TLB3CFG: + i = id - KVM_REG_PPC_TLB0CFG; + *val = get_reg_val(id, vcpu->arch.tlbcfg[i]); + break; + default: + r = -EINVAL; + break; + } + + return r; +} + +int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, + union kvmppc_one_reg *val) +{ + int r = 0; + long int i; + + switch (id) { + case KVM_REG_PPC_MAS0: + vcpu->arch.shared->mas0 = set_reg_val(id, *val); + break; + case KVM_REG_PPC_MAS1: + vcpu->arch.shared->mas1 = set_reg_val(id, *val); + break; + case KVM_REG_PPC_MAS2: + vcpu->arch.shared->mas2 = set_reg_val(id, *val); + break; + case KVM_REG_PPC_MAS7_3: + vcpu->arch.shared->mas7_3 = set_reg_val(id, *val); + break; + case KVM_REG_PPC_MAS4: + vcpu->arch.shared->mas4 = set_reg_val(id, *val); + break; + case KVM_REG_PPC_MAS6: + vcpu->arch.shared->mas6 = set_reg_val(id, *val); + break; + /* Only allow MMU registers to be set to the config supported by KVM */ + case KVM_REG_PPC_MMUCFG: { + u32 reg = set_reg_val(id, *val); + if (reg != vcpu->arch.mmucfg) + r = -EINVAL; + break; + } + case KVM_REG_PPC_TLB0CFG: + case KVM_REG_PPC_TLB1CFG: + case KVM_REG_PPC_TLB2CFG: + case KVM_REG_PPC_TLB3CFG: { + /* MMU geometry (N_ENTRY/ASSOC) can be set only using SW_TLB */ + u32 reg = set_reg_val(id, *val); + i = id - KVM_REG_PPC_TLB0CFG; + if (reg != vcpu->arch.tlbcfg[i]) + r = -EINVAL; + break; + } + default: + r = -EINVAL; + break; + } + + return r; +} + int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, struct kvm_config_tlb *cfg) { diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c index b071bdc..ab073a8 100644 --- a/arch/powerpc/kvm/e500mc.c +++ b/arch/powerpc/kvm/e500mc.c @@ -258,13 +258,15 @@ int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *val) { - return -EINVAL; + int r = kvmppc_get_one_reg_e500_tlb(vcpu, id, val); + return r; } int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *val) { - return -EINVAL; + int r = kvmppc_set_one_reg_e500_tlb(vcpu, id, val); + return r; } struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)