2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 * Copyright IBM Corp. 2007
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
20 #ifndef __KVM_POWERPC_TLB_H__
21 #define __KVM_POWERPC_TLB_H__
23 #include <linux/kvm_host.h>
24 #include <asm/mmu-44x.h>
26 extern int kvmppc_44x_tlb_index(struct kvm_vcpu *vcpu, gva_t eaddr,
27 unsigned int pid, unsigned int as);
28 extern struct kvmppc_44x_tlbe *kvmppc_44x_dtlb_search(struct kvm_vcpu *vcpu,
30 extern struct kvmppc_44x_tlbe *kvmppc_44x_itlb_search(struct kvm_vcpu *vcpu,
32 extern void kvmppc_tlbe_set_modified(struct kvm_vcpu *vcpu, unsigned int i);
34 extern int kvmppc_44x_emul_tlbsx(struct kvm_vcpu *vcpu, u8 rt, u8 ra, u8 rb,
36 extern int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws);
38 /* TLB helper functions */
39 static inline unsigned int get_tlb_size(const struct kvmppc_44x_tlbe *tlbe)
41 return (tlbe->word0 >> 4) & 0xf;
44 static inline gva_t get_tlb_eaddr(const struct kvmppc_44x_tlbe *tlbe)
46 return tlbe->word0 & 0xfffffc00;
49 static inline gva_t get_tlb_bytes(const struct kvmppc_44x_tlbe *tlbe)
51 unsigned int pgsize = get_tlb_size(tlbe);
52 return 1 << 10 << (pgsize << 1);
55 static inline gva_t get_tlb_end(const struct kvmppc_44x_tlbe *tlbe)
57 return get_tlb_eaddr(tlbe) + get_tlb_bytes(tlbe) - 1;
60 static inline u64 get_tlb_raddr(const struct kvmppc_44x_tlbe *tlbe)
62 u64 word1 = tlbe->word1;
63 return ((word1 & 0xf) << 32) | (word1 & 0xfffffc00);
66 static inline unsigned int get_tlb_tid(const struct kvmppc_44x_tlbe *tlbe)
68 return tlbe->tid & 0xff;
71 static inline unsigned int get_tlb_ts(const struct kvmppc_44x_tlbe *tlbe)
73 return (tlbe->word0 >> 8) & 0x1;
76 static inline unsigned int get_tlb_v(const struct kvmppc_44x_tlbe *tlbe)
78 return (tlbe->word0 >> 9) & 0x1;
81 static inline unsigned int get_mmucr_stid(const struct kvm_vcpu *vcpu)
83 return vcpu->arch.mmucr & 0xff;
86 static inline unsigned int get_mmucr_sts(const struct kvm_vcpu *vcpu)
88 return (vcpu->arch.mmucr >> 16) & 0x1;
91 static inline gpa_t tlb_xlate(struct kvmppc_44x_tlbe *tlbe, gva_t eaddr)
93 unsigned int pgmask = get_tlb_bytes(tlbe) - 1;
95 return get_tlb_raddr(tlbe) | (eaddr & pgmask);
98 #endif /* __KVM_POWERPC_TLB_H__ */