Commit 8893a188 authored by Mihai Caraman's avatar Mihai Caraman Committed by Alexander Graf
Browse files

KVM: PPC: e500: Move vcpu's MMU configuration to dedicated functions



Vcpu's MMU default configuration and geometry update logic was buried in
a chunk of code. Move them to dedicated functions to add more clarity.
Signed-off-by: default avatarMihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent a85d2aa2
......@@ -690,6 +690,20 @@ int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
return r;
}
static int vcpu_mmu_geometry_update(struct kvm_vcpu *vcpu,
struct kvm_book3e_206_tlb_params *params)
{
vcpu->arch.tlbcfg[0] &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
if (params->tlb_sizes[0] <= 2048)
vcpu->arch.tlbcfg[0] |= params->tlb_sizes[0];
vcpu->arch.tlbcfg[0] |= params->tlb_ways[0] << TLBnCFG_ASSOC_SHIFT;
vcpu->arch.tlbcfg[1] &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
vcpu->arch.tlbcfg[1] |= params->tlb_sizes[1];
vcpu->arch.tlbcfg[1] |= params->tlb_ways[1] << TLBnCFG_ASSOC_SHIFT;
return 0;
}
int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
struct kvm_config_tlb *cfg)
{
......@@ -786,16 +800,8 @@ int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
vcpu_e500->gtlb_offset[0] = 0;
vcpu_e500->gtlb_offset[1] = params.tlb_sizes[0];
vcpu->arch.mmucfg = mfspr(SPRN_MMUCFG) & ~MMUCFG_LPIDSIZE;
vcpu->arch.tlbcfg[0] &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
if (params.tlb_sizes[0] <= 2048)
vcpu->arch.tlbcfg[0] |= params.tlb_sizes[0];
vcpu->arch.tlbcfg[0] |= params.tlb_ways[0] << TLBnCFG_ASSOC_SHIFT;
vcpu->arch.tlbcfg[1] &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
vcpu->arch.tlbcfg[1] |= params.tlb_sizes[1];
vcpu->arch.tlbcfg[1] |= params.tlb_ways[1] << TLBnCFG_ASSOC_SHIFT;
/* Update vcpu's MMU geometry based on SW_TLB input */
vcpu_mmu_geometry_update(vcpu, &params);
vcpu_e500->shared_tlb_pages = pages;
vcpu_e500->num_shared_tlb_pages = num_pages;
......@@ -831,6 +837,27 @@ int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
return 0;
}
/* Vcpu's MMU default configuration */
static int vcpu_mmu_init(struct kvm_vcpu *vcpu,
struct kvmppc_e500_tlb_params *params)
{
/* Initialize RASIZE, PIDSIZE, NTLBS and MAVN fields with host values*/
vcpu->arch.mmucfg = mfspr(SPRN_MMUCFG) & ~MMUCFG_LPIDSIZE;
/* Initialize TLBnCFG fields with host values and SW_TLB geometry*/
vcpu->arch.tlbcfg[0] = mfspr(SPRN_TLB0CFG) &
~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
vcpu->arch.tlbcfg[0] |= params[0].entries;
vcpu->arch.tlbcfg[0] |= params[0].ways << TLBnCFG_ASSOC_SHIFT;
vcpu->arch.tlbcfg[1] = mfspr(SPRN_TLB1CFG) &
~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
vcpu->arch.tlbcfg[1] |= params[1].entries;
vcpu->arch.tlbcfg[1] |= params[1].ways << TLBnCFG_ASSOC_SHIFT;
return 0;
}
int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
{
struct kvm_vcpu *vcpu = &vcpu_e500->vcpu;
......@@ -875,18 +902,7 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
if (!vcpu_e500->g2h_tlb1_map)
goto err;
/* Init TLB configuration register */
vcpu->arch.tlbcfg[0] = mfspr(SPRN_TLB0CFG) &
~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
vcpu->arch.tlbcfg[0] |= vcpu_e500->gtlb_params[0].entries;
vcpu->arch.tlbcfg[0] |=
vcpu_e500->gtlb_params[0].ways << TLBnCFG_ASSOC_SHIFT;
vcpu->arch.tlbcfg[1] = mfspr(SPRN_TLB1CFG) &
~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
vcpu->arch.tlbcfg[1] |= vcpu_e500->gtlb_params[1].entries;
vcpu->arch.tlbcfg[1] |=
vcpu_e500->gtlb_params[1].ways << TLBnCFG_ASSOC_SHIFT;
vcpu_mmu_init(vcpu, vcpu_e500->gtlb_params);
kvmppc_recalc_tlb1map_range(vcpu_e500);
return 0;
......
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