/* * 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 IBM Corp. 2007 * * Authors: Hollis Blanchard <hollisb@us.ibm.com> */ #ifndef __KVM_POWERPC_TLB_H__ #define __KVM_POWERPC_TLB_H__ #include <linux/kvm_host.h> #include <asm/mmu-44x.h> extern int kvmppc_44x_tlb_index(struct kvm_vcpu *vcpu, gva_t eaddr, unsigned int pid, unsigned int as); extern struct tlbe *kvmppc_44x_dtlb_search(struct kvm_vcpu *vcpu, gva_t eaddr); extern struct tlbe *kvmppc_44x_itlb_search(struct kvm_vcpu *vcpu, gva_t eaddr); /* TLB helper functions */ static inline unsigned int get_tlb_size(const struct tlbe *tlbe) { return (tlbe->word0 >> 4) & 0xf; } static inline gva_t get_tlb_eaddr(const struct tlbe *tlbe) { return tlbe->word0 & 0xfffffc00; } static inline gva_t get_tlb_bytes(const struct tlbe *tlbe) { unsigned int pgsize = get_tlb_size(tlbe); return 1 << 10 << (pgsize << 1); } static inline gva_t get_tlb_end(const struct tlbe *tlbe) { return get_tlb_eaddr(tlbe) + get_tlb_bytes(tlbe) - 1; } static inline u64 get_tlb_raddr(const struct tlbe *tlbe) { u64 word1 = tlbe->word1; return ((word1 & 0xf) << 32) | (word1 & 0xfffffc00); } static inline unsigned int get_tlb_tid(const struct tlbe *tlbe) { return tlbe->tid & 0xff; } static inline unsigned int get_tlb_ts(const struct tlbe *tlbe) { return (tlbe->word0 >> 8) & 0x1; } static inline unsigned int get_tlb_v(const struct tlbe *tlbe) { return (tlbe->word0 >> 9) & 0x1; } static inline unsigned int get_mmucr_stid(const struct kvm_vcpu *vcpu) { return vcpu->arch.mmucr & 0xff; } static inline unsigned int get_mmucr_sts(const struct kvm_vcpu *vcpu) { return (vcpu->arch.mmucr >> 16) & 0x1; } static inline gpa_t tlb_xlate(struct tlbe *tlbe, gva_t eaddr) { unsigned int pgmask = get_tlb_bytes(tlbe) - 1; return get_tlb_raddr(tlbe) | (eaddr & pgmask); } #endif /* __KVM_POWERPC_TLB_H__ */